| 1 | /* Parser for linespec for the GNU debugger, GDB. |
| 2 | |
| 3 | Copyright (C) 1986-2020 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 | #include "location.h" |
| 47 | #include "gdbsupport/function-view.h" |
| 48 | #include "gdbsupport/def-vector.h" |
| 49 | #include <algorithm> |
| 50 | |
| 51 | /* An enumeration of the various things a user might attempt to |
| 52 | complete for a linespec location. */ |
| 53 | |
| 54 | enum class linespec_complete_what |
| 55 | { |
| 56 | /* Nothing, no possible completion. */ |
| 57 | NOTHING, |
| 58 | |
| 59 | /* A function/method name. Due to ambiguity between |
| 60 | |
| 61 | (gdb) b source[TAB] |
| 62 | source_file.c |
| 63 | source_function |
| 64 | |
| 65 | this can also indicate a source filename, iff we haven't seen a |
| 66 | separate source filename component, as in "b source.c:function". */ |
| 67 | FUNCTION, |
| 68 | |
| 69 | /* A label symbol. E.g., break file.c:function:LABEL. */ |
| 70 | LABEL, |
| 71 | |
| 72 | /* An expression. E.g., "break foo if EXPR", or "break *EXPR". */ |
| 73 | EXPRESSION, |
| 74 | |
| 75 | /* A linespec keyword ("if"/"thread"/"task"/"-force-condition"). |
| 76 | E.g., "break func threa<tab>". */ |
| 77 | KEYWORD, |
| 78 | }; |
| 79 | |
| 80 | /* An address entry is used to ensure that any given location is only |
| 81 | added to the result a single time. It holds an address and the |
| 82 | program space from which the address came. */ |
| 83 | |
| 84 | struct address_entry |
| 85 | { |
| 86 | struct program_space *pspace; |
| 87 | CORE_ADDR addr; |
| 88 | }; |
| 89 | |
| 90 | /* A linespec. Elements of this structure are filled in by a parser |
| 91 | (either parse_linespec or some other function). The structure is |
| 92 | then converted into SALs by convert_linespec_to_sals. */ |
| 93 | |
| 94 | struct linespec |
| 95 | { |
| 96 | /* An explicit location describing the SaLs. */ |
| 97 | struct explicit_location explicit_loc; |
| 98 | |
| 99 | /* The list of symtabs to search to which to limit the search. May not |
| 100 | be NULL. If explicit.SOURCE_FILENAME is NULL (no user-specified |
| 101 | filename), FILE_SYMTABS should contain one single NULL member. This |
| 102 | will cause the code to use the default symtab. */ |
| 103 | std::vector<symtab *> *file_symtabs; |
| 104 | |
| 105 | /* A list of matching function symbols and minimal symbols. Both lists |
| 106 | may be NULL (or empty) if no matching symbols were found. */ |
| 107 | std::vector<block_symbol> *function_symbols; |
| 108 | std::vector<bound_minimal_symbol> *minimal_symbols; |
| 109 | |
| 110 | /* A structure of matching label symbols and the corresponding |
| 111 | function symbol in which the label was found. Both may be NULL |
| 112 | or both must be non-NULL. */ |
| 113 | struct |
| 114 | { |
| 115 | std::vector<block_symbol> *label_symbols; |
| 116 | std::vector<block_symbol> *function_symbols; |
| 117 | } labels; |
| 118 | }; |
| 119 | typedef struct linespec *linespec_p; |
| 120 | |
| 121 | /* A canonical linespec represented as a symtab-related string. |
| 122 | |
| 123 | Each entry represents the "SYMTAB:SUFFIX" linespec string. |
| 124 | SYMTAB can be converted for example by symtab_to_fullname or |
| 125 | symtab_to_filename_for_display as needed. */ |
| 126 | |
| 127 | struct linespec_canonical_name |
| 128 | { |
| 129 | /* Remaining text part of the linespec string. */ |
| 130 | char *suffix; |
| 131 | |
| 132 | /* If NULL then SUFFIX is the whole linespec string. */ |
| 133 | struct symtab *symtab; |
| 134 | }; |
| 135 | |
| 136 | /* An instance of this is used to keep all state while linespec |
| 137 | operates. This instance is passed around as a 'this' pointer to |
| 138 | the various implementation methods. */ |
| 139 | |
| 140 | struct linespec_state |
| 141 | { |
| 142 | /* The language in use during linespec processing. */ |
| 143 | const struct language_defn *language; |
| 144 | |
| 145 | /* The program space as seen when the module was entered. */ |
| 146 | struct program_space *program_space; |
| 147 | |
| 148 | /* If not NULL, the search is restricted to just this program |
| 149 | space. */ |
| 150 | struct program_space *search_pspace; |
| 151 | |
| 152 | /* The default symtab to use, if no other symtab is specified. */ |
| 153 | struct symtab *default_symtab; |
| 154 | |
| 155 | /* The default line to use. */ |
| 156 | int default_line; |
| 157 | |
| 158 | /* The 'funfirstline' value that was passed in to decode_line_1 or |
| 159 | decode_line_full. */ |
| 160 | int funfirstline; |
| 161 | |
| 162 | /* Nonzero if we are running in 'list' mode; see decode_line_list. */ |
| 163 | int list_mode; |
| 164 | |
| 165 | /* The 'canonical' value passed to decode_line_full, or NULL. */ |
| 166 | struct linespec_result *canonical; |
| 167 | |
| 168 | /* Canonical strings that mirror the std::vector<symtab_and_line> result. */ |
| 169 | struct linespec_canonical_name *canonical_names; |
| 170 | |
| 171 | /* This is a set of address_entry objects which is used to prevent |
| 172 | duplicate symbols from being entered into the result. */ |
| 173 | htab_t addr_set; |
| 174 | |
| 175 | /* Are we building a linespec? */ |
| 176 | int is_linespec; |
| 177 | }; |
| 178 | |
| 179 | /* This is a helper object that is used when collecting symbols into a |
| 180 | result. */ |
| 181 | |
| 182 | struct collect_info |
| 183 | { |
| 184 | /* The linespec object in use. */ |
| 185 | struct linespec_state *state; |
| 186 | |
| 187 | /* A list of symtabs to which to restrict matches. */ |
| 188 | std::vector<symtab *> *file_symtabs; |
| 189 | |
| 190 | /* The result being accumulated. */ |
| 191 | struct |
| 192 | { |
| 193 | std::vector<block_symbol> *symbols; |
| 194 | std::vector<bound_minimal_symbol> *minimal_symbols; |
| 195 | } result; |
| 196 | |
| 197 | /* Possibly add a symbol to the results. */ |
| 198 | virtual bool add_symbol (block_symbol *bsym); |
| 199 | }; |
| 200 | |
| 201 | bool |
| 202 | collect_info::add_symbol (block_symbol *bsym) |
| 203 | { |
| 204 | /* In list mode, add all matching symbols, regardless of class. |
| 205 | This allows the user to type "list a_global_variable". */ |
| 206 | if (SYMBOL_CLASS (bsym->symbol) == LOC_BLOCK || this->state->list_mode) |
| 207 | this->result.symbols->push_back (*bsym); |
| 208 | |
| 209 | /* Continue iterating. */ |
| 210 | return true; |
| 211 | } |
| 212 | |
| 213 | /* Custom collect_info for symbol_searcher. */ |
| 214 | |
| 215 | struct symbol_searcher_collect_info |
| 216 | : collect_info |
| 217 | { |
| 218 | bool add_symbol (block_symbol *bsym) override |
| 219 | { |
| 220 | /* Add everything. */ |
| 221 | this->result.symbols->push_back (*bsym); |
| 222 | |
| 223 | /* Continue iterating. */ |
| 224 | return true; |
| 225 | } |
| 226 | }; |
| 227 | |
| 228 | /* Token types */ |
| 229 | |
| 230 | enum ls_token_type |
| 231 | { |
| 232 | /* A keyword */ |
| 233 | LSTOKEN_KEYWORD = 0, |
| 234 | |
| 235 | /* A colon "separator" */ |
| 236 | LSTOKEN_COLON, |
| 237 | |
| 238 | /* A string */ |
| 239 | LSTOKEN_STRING, |
| 240 | |
| 241 | /* A number */ |
| 242 | LSTOKEN_NUMBER, |
| 243 | |
| 244 | /* A comma */ |
| 245 | LSTOKEN_COMMA, |
| 246 | |
| 247 | /* EOI (end of input) */ |
| 248 | LSTOKEN_EOI, |
| 249 | |
| 250 | /* Consumed token */ |
| 251 | LSTOKEN_CONSUMED |
| 252 | }; |
| 253 | typedef enum ls_token_type linespec_token_type; |
| 254 | |
| 255 | /* List of keywords. This is NULL-terminated so that it can be used |
| 256 | as enum completer. */ |
| 257 | const char * const linespec_keywords[] = { "if", "thread", "task", "-force-condition", NULL }; |
| 258 | #define IF_KEYWORD_INDEX 0 |
| 259 | #define FORCE_KEYWORD_INDEX 3 |
| 260 | |
| 261 | /* A token of the linespec lexer */ |
| 262 | |
| 263 | struct linespec_token |
| 264 | { |
| 265 | /* The type of the token */ |
| 266 | linespec_token_type type; |
| 267 | |
| 268 | /* Data for the token */ |
| 269 | union |
| 270 | { |
| 271 | /* A string, given as a stoken */ |
| 272 | struct stoken string; |
| 273 | |
| 274 | /* A keyword */ |
| 275 | const char *keyword; |
| 276 | } data; |
| 277 | }; |
| 278 | |
| 279 | #define LS_TOKEN_STOKEN(TOK) (TOK).data.string |
| 280 | #define LS_TOKEN_KEYWORD(TOK) (TOK).data.keyword |
| 281 | |
| 282 | /* An instance of the linespec parser. */ |
| 283 | |
| 284 | struct linespec_parser |
| 285 | { |
| 286 | linespec_parser (int flags, const struct language_defn *language, |
| 287 | struct program_space *search_pspace, |
| 288 | struct symtab *default_symtab, |
| 289 | int default_line, |
| 290 | struct linespec_result *canonical); |
| 291 | |
| 292 | ~linespec_parser (); |
| 293 | |
| 294 | DISABLE_COPY_AND_ASSIGN (linespec_parser); |
| 295 | |
| 296 | /* Lexer internal data */ |
| 297 | struct |
| 298 | { |
| 299 | /* Save head of input stream. */ |
| 300 | const char *saved_arg; |
| 301 | |
| 302 | /* Head of the input stream. */ |
| 303 | const char *stream; |
| 304 | #define PARSER_STREAM(P) ((P)->lexer.stream) |
| 305 | |
| 306 | /* The current token. */ |
| 307 | linespec_token current; |
| 308 | } lexer {}; |
| 309 | |
| 310 | /* Is the entire linespec quote-enclosed? */ |
| 311 | int is_quote_enclosed = 0; |
| 312 | |
| 313 | /* The state of the parse. */ |
| 314 | struct linespec_state state {}; |
| 315 | #define PARSER_STATE(PPTR) (&(PPTR)->state) |
| 316 | |
| 317 | /* The result of the parse. */ |
| 318 | struct linespec result {}; |
| 319 | #define PARSER_RESULT(PPTR) (&(PPTR)->result) |
| 320 | |
| 321 | /* What the parser believes the current word point should complete |
| 322 | to. */ |
| 323 | linespec_complete_what complete_what = linespec_complete_what::NOTHING; |
| 324 | |
| 325 | /* The completion word point. The parser advances this as it skips |
| 326 | tokens. At some point the input string will end or parsing will |
| 327 | fail, and then we attempt completion at the captured completion |
| 328 | word point, interpreting the string at completion_word as |
| 329 | COMPLETE_WHAT. */ |
| 330 | const char *completion_word = nullptr; |
| 331 | |
| 332 | /* If the current token was a quoted string, then this is the |
| 333 | quoting character (either " or '). */ |
| 334 | int completion_quote_char = 0; |
| 335 | |
| 336 | /* If the current token was a quoted string, then this points at the |
| 337 | end of the quoted string. */ |
| 338 | const char *completion_quote_end = nullptr; |
| 339 | |
| 340 | /* If parsing for completion, then this points at the completion |
| 341 | tracker. Otherwise, this is NULL. */ |
| 342 | struct completion_tracker *completion_tracker = nullptr; |
| 343 | }; |
| 344 | |
| 345 | /* A convenience macro for accessing the explicit location result of |
| 346 | the parser. */ |
| 347 | #define PARSER_EXPLICIT(PPTR) (&PARSER_RESULT ((PPTR))->explicit_loc) |
| 348 | |
| 349 | /* Prototypes for local functions. */ |
| 350 | |
| 351 | static void iterate_over_file_blocks |
| 352 | (struct symtab *symtab, const lookup_name_info &name, |
| 353 | domain_enum domain, |
| 354 | gdb::function_view<symbol_found_callback_ftype> callback); |
| 355 | |
| 356 | static void initialize_defaults (struct symtab **default_symtab, |
| 357 | int *default_line); |
| 358 | |
| 359 | CORE_ADDR linespec_expression_to_pc (const char **exp_ptr); |
| 360 | |
| 361 | static std::vector<symtab_and_line> decode_objc (struct linespec_state *self, |
| 362 | linespec_p ls, |
| 363 | const char *arg); |
| 364 | |
| 365 | static std::vector<symtab *> symtabs_from_filename |
| 366 | (const char *, struct program_space *pspace); |
| 367 | |
| 368 | static std::vector<block_symbol> *find_label_symbols |
| 369 | (struct linespec_state *self, std::vector<block_symbol> *function_symbols, |
| 370 | std::vector<block_symbol> *label_funcs_ret, const char *name, |
| 371 | bool completion_mode = false); |
| 372 | |
| 373 | static void find_linespec_symbols (struct linespec_state *self, |
| 374 | std::vector<symtab *> *file_symtabs, |
| 375 | const char *name, |
| 376 | symbol_name_match_type name_match_type, |
| 377 | std::vector<block_symbol> *symbols, |
| 378 | std::vector<bound_minimal_symbol> *minsyms); |
| 379 | |
| 380 | static struct line_offset |
| 381 | linespec_parse_variable (struct linespec_state *self, |
| 382 | const char *variable); |
| 383 | |
| 384 | static int symbol_to_sal (struct symtab_and_line *result, |
| 385 | int funfirstline, struct symbol *sym); |
| 386 | |
| 387 | static void add_matching_symbols_to_info (const char *name, |
| 388 | symbol_name_match_type name_match_type, |
| 389 | enum search_domain search_domain, |
| 390 | struct collect_info *info, |
| 391 | struct program_space *pspace); |
| 392 | |
| 393 | static void add_all_symbol_names_from_pspace |
| 394 | (struct collect_info *info, struct program_space *pspace, |
| 395 | const std::vector<const char *> &names, enum search_domain search_domain); |
| 396 | |
| 397 | static std::vector<symtab *> |
| 398 | collect_symtabs_from_filename (const char *file, |
| 399 | struct program_space *pspace); |
| 400 | |
| 401 | static std::vector<symtab_and_line> decode_digits_ordinary |
| 402 | (struct linespec_state *self, |
| 403 | linespec_p ls, |
| 404 | int line, |
| 405 | linetable_entry **best_entry); |
| 406 | |
| 407 | static std::vector<symtab_and_line> decode_digits_list_mode |
| 408 | (struct linespec_state *self, |
| 409 | linespec_p ls, |
| 410 | struct symtab_and_line val); |
| 411 | |
| 412 | static void minsym_found (struct linespec_state *self, struct objfile *objfile, |
| 413 | struct minimal_symbol *msymbol, |
| 414 | std::vector<symtab_and_line> *result); |
| 415 | |
| 416 | static bool compare_symbols (const block_symbol &a, const block_symbol &b); |
| 417 | |
| 418 | static bool compare_msymbols (const bound_minimal_symbol &a, |
| 419 | const bound_minimal_symbol &b); |
| 420 | |
| 421 | /* Permitted quote characters for the parser. This is different from the |
| 422 | completer's quote characters to allow backward compatibility with the |
| 423 | previous parser. */ |
| 424 | static const char linespec_quote_characters[] = "\"\'"; |
| 425 | |
| 426 | /* Lexer functions. */ |
| 427 | |
| 428 | /* Lex a number from the input in PARSER. This only supports |
| 429 | decimal numbers. |
| 430 | |
| 431 | Return true if input is decimal numbers. Return false if not. */ |
| 432 | |
| 433 | static int |
| 434 | linespec_lexer_lex_number (linespec_parser *parser, linespec_token *tokenp) |
| 435 | { |
| 436 | tokenp->type = LSTOKEN_NUMBER; |
| 437 | LS_TOKEN_STOKEN (*tokenp).length = 0; |
| 438 | LS_TOKEN_STOKEN (*tokenp).ptr = PARSER_STREAM (parser); |
| 439 | |
| 440 | /* Keep any sign at the start of the stream. */ |
| 441 | if (*PARSER_STREAM (parser) == '+' || *PARSER_STREAM (parser) == '-') |
| 442 | { |
| 443 | ++LS_TOKEN_STOKEN (*tokenp).length; |
| 444 | ++(PARSER_STREAM (parser)); |
| 445 | } |
| 446 | |
| 447 | while (isdigit (*PARSER_STREAM (parser))) |
| 448 | { |
| 449 | ++LS_TOKEN_STOKEN (*tokenp).length; |
| 450 | ++(PARSER_STREAM (parser)); |
| 451 | } |
| 452 | |
| 453 | /* If the next character in the input buffer is not a space, comma, |
| 454 | quote, or colon, this input does not represent a number. */ |
| 455 | if (*PARSER_STREAM (parser) != '\0' |
| 456 | && !isspace (*PARSER_STREAM (parser)) && *PARSER_STREAM (parser) != ',' |
| 457 | && *PARSER_STREAM (parser) != ':' |
| 458 | && !strchr (linespec_quote_characters, *PARSER_STREAM (parser))) |
| 459 | { |
| 460 | PARSER_STREAM (parser) = LS_TOKEN_STOKEN (*tokenp).ptr; |
| 461 | return 0; |
| 462 | } |
| 463 | |
| 464 | return 1; |
| 465 | } |
| 466 | |
| 467 | /* See linespec.h. */ |
| 468 | |
| 469 | const char * |
| 470 | linespec_lexer_lex_keyword (const char *p) |
| 471 | { |
| 472 | int i; |
| 473 | |
| 474 | if (p != NULL) |
| 475 | { |
| 476 | for (i = 0; linespec_keywords[i] != NULL; ++i) |
| 477 | { |
| 478 | int len = strlen (linespec_keywords[i]); |
| 479 | |
| 480 | /* If P begins with |
| 481 | |
| 482 | - "thread" or "task" and the next character is |
| 483 | whitespace, we may have found a keyword. It is only a |
| 484 | keyword if it is not followed by another keyword. |
| 485 | |
| 486 | - "-force-condition", the next character may be EOF |
| 487 | since this keyword does not take any arguments. Otherwise, |
| 488 | it should be followed by a keyword. |
| 489 | |
| 490 | - "if", ALWAYS stop the lexer, since it is not possible to |
| 491 | predict what is going to appear in the condition, which can |
| 492 | only be parsed after SaLs have been found. */ |
| 493 | if (strncmp (p, linespec_keywords[i], len) == 0) |
| 494 | { |
| 495 | int j; |
| 496 | |
| 497 | if (i == FORCE_KEYWORD_INDEX && p[len] == '\0') |
| 498 | return linespec_keywords[i]; |
| 499 | |
| 500 | if (!isspace (p[len])) |
| 501 | continue; |
| 502 | |
| 503 | if (i == FORCE_KEYWORD_INDEX) |
| 504 | { |
| 505 | p += len; |
| 506 | p = skip_spaces (p); |
| 507 | for (j = 0; linespec_keywords[j] != NULL; ++j) |
| 508 | { |
| 509 | int nextlen = strlen (linespec_keywords[j]); |
| 510 | |
| 511 | if (strncmp (p, linespec_keywords[j], nextlen) == 0 |
| 512 | && isspace (p[nextlen])) |
| 513 | return linespec_keywords[i]; |
| 514 | } |
| 515 | } |
| 516 | else if (i != IF_KEYWORD_INDEX) |
| 517 | { |
| 518 | /* We matched a "thread" or "task". */ |
| 519 | p += len; |
| 520 | p = skip_spaces (p); |
| 521 | for (j = 0; linespec_keywords[j] != NULL; ++j) |
| 522 | { |
| 523 | int nextlen = strlen (linespec_keywords[j]); |
| 524 | |
| 525 | if (strncmp (p, linespec_keywords[j], nextlen) == 0 |
| 526 | && isspace (p[nextlen])) |
| 527 | return NULL; |
| 528 | } |
| 529 | } |
| 530 | |
| 531 | return linespec_keywords[i]; |
| 532 | } |
| 533 | } |
| 534 | } |
| 535 | |
| 536 | return NULL; |
| 537 | } |
| 538 | |
| 539 | /* See description in linespec.h. */ |
| 540 | |
| 541 | int |
| 542 | is_ada_operator (const char *string) |
| 543 | { |
| 544 | const struct ada_opname_map *mapping; |
| 545 | |
| 546 | for (mapping = ada_opname_table; |
| 547 | mapping->encoded != NULL |
| 548 | && !startswith (string, mapping->decoded); ++mapping) |
| 549 | ; |
| 550 | |
| 551 | return mapping->decoded == NULL ? 0 : strlen (mapping->decoded); |
| 552 | } |
| 553 | |
| 554 | /* Find QUOTE_CHAR in STRING, accounting for the ':' terminal. Return |
| 555 | the location of QUOTE_CHAR, or NULL if not found. */ |
| 556 | |
| 557 | static const char * |
| 558 | skip_quote_char (const char *string, char quote_char) |
| 559 | { |
| 560 | const char *p, *last; |
| 561 | |
| 562 | p = last = find_toplevel_char (string, quote_char); |
| 563 | while (p && *p != '\0' && *p != ':') |
| 564 | { |
| 565 | p = find_toplevel_char (p, quote_char); |
| 566 | if (p != NULL) |
| 567 | last = p++; |
| 568 | } |
| 569 | |
| 570 | return last; |
| 571 | } |
| 572 | |
| 573 | /* Make a writable copy of the string given in TOKEN, trimming |
| 574 | any trailing whitespace. */ |
| 575 | |
| 576 | static gdb::unique_xmalloc_ptr<char> |
| 577 | copy_token_string (linespec_token token) |
| 578 | { |
| 579 | const char *str, *s; |
| 580 | |
| 581 | if (token.type == LSTOKEN_KEYWORD) |
| 582 | return make_unique_xstrdup (LS_TOKEN_KEYWORD (token)); |
| 583 | |
| 584 | str = LS_TOKEN_STOKEN (token).ptr; |
| 585 | s = remove_trailing_whitespace (str, str + LS_TOKEN_STOKEN (token).length); |
| 586 | |
| 587 | return gdb::unique_xmalloc_ptr<char> (savestring (str, s - str)); |
| 588 | } |
| 589 | |
| 590 | /* Does P represent the end of a quote-enclosed linespec? */ |
| 591 | |
| 592 | static int |
| 593 | is_closing_quote_enclosed (const char *p) |
| 594 | { |
| 595 | if (strchr (linespec_quote_characters, *p)) |
| 596 | ++p; |
| 597 | p = skip_spaces ((char *) p); |
| 598 | return (*p == '\0' || linespec_lexer_lex_keyword (p)); |
| 599 | } |
| 600 | |
| 601 | /* Find the end of the parameter list that starts with *INPUT. |
| 602 | This helper function assists with lexing string segments |
| 603 | which might contain valid (non-terminating) commas. */ |
| 604 | |
| 605 | static const char * |
| 606 | find_parameter_list_end (const char *input) |
| 607 | { |
| 608 | char end_char, start_char; |
| 609 | int depth; |
| 610 | const char *p; |
| 611 | |
| 612 | start_char = *input; |
| 613 | if (start_char == '(') |
| 614 | end_char = ')'; |
| 615 | else if (start_char == '<') |
| 616 | end_char = '>'; |
| 617 | else |
| 618 | return NULL; |
| 619 | |
| 620 | p = input; |
| 621 | depth = 0; |
| 622 | while (*p) |
| 623 | { |
| 624 | if (*p == start_char) |
| 625 | ++depth; |
| 626 | else if (*p == end_char) |
| 627 | { |
| 628 | if (--depth == 0) |
| 629 | { |
| 630 | ++p; |
| 631 | break; |
| 632 | } |
| 633 | } |
| 634 | ++p; |
| 635 | } |
| 636 | |
| 637 | return p; |
| 638 | } |
| 639 | |
| 640 | /* If the [STRING, STRING_LEN) string ends with what looks like a |
| 641 | keyword, return the keyword start offset in STRING. Return -1 |
| 642 | otherwise. */ |
| 643 | |
| 644 | static size_t |
| 645 | string_find_incomplete_keyword_at_end (const char * const *keywords, |
| 646 | const char *string, size_t string_len) |
| 647 | { |
| 648 | const char *end = string + string_len; |
| 649 | const char *p = end; |
| 650 | |
| 651 | while (p > string && *p != ' ') |
| 652 | --p; |
| 653 | if (p > string) |
| 654 | { |
| 655 | p++; |
| 656 | size_t len = end - p; |
| 657 | for (size_t i = 0; keywords[i] != NULL; ++i) |
| 658 | if (strncmp (keywords[i], p, len) == 0) |
| 659 | return p - string; |
| 660 | } |
| 661 | |
| 662 | return -1; |
| 663 | } |
| 664 | |
| 665 | /* Lex a string from the input in PARSER. */ |
| 666 | |
| 667 | static linespec_token |
| 668 | linespec_lexer_lex_string (linespec_parser *parser) |
| 669 | { |
| 670 | linespec_token token; |
| 671 | const char *start = PARSER_STREAM (parser); |
| 672 | |
| 673 | token.type = LSTOKEN_STRING; |
| 674 | |
| 675 | /* If the input stream starts with a quote character, skip to the next |
| 676 | quote character, regardless of the content. */ |
| 677 | if (strchr (linespec_quote_characters, *PARSER_STREAM (parser))) |
| 678 | { |
| 679 | const char *end; |
| 680 | char quote_char = *PARSER_STREAM (parser); |
| 681 | |
| 682 | /* Special case: Ada operators. */ |
| 683 | if (PARSER_STATE (parser)->language->la_language == language_ada |
| 684 | && quote_char == '\"') |
| 685 | { |
| 686 | int len = is_ada_operator (PARSER_STREAM (parser)); |
| 687 | |
| 688 | if (len != 0) |
| 689 | { |
| 690 | /* The input is an Ada operator. Return the quoted string |
| 691 | as-is. */ |
| 692 | LS_TOKEN_STOKEN (token).ptr = PARSER_STREAM (parser); |
| 693 | LS_TOKEN_STOKEN (token).length = len; |
| 694 | PARSER_STREAM (parser) += len; |
| 695 | return token; |
| 696 | } |
| 697 | |
| 698 | /* The input does not represent an Ada operator -- fall through |
| 699 | to normal quoted string handling. */ |
| 700 | } |
| 701 | |
| 702 | /* Skip past the beginning quote. */ |
| 703 | ++(PARSER_STREAM (parser)); |
| 704 | |
| 705 | /* Mark the start of the string. */ |
| 706 | LS_TOKEN_STOKEN (token).ptr = PARSER_STREAM (parser); |
| 707 | |
| 708 | /* Skip to the ending quote. */ |
| 709 | end = skip_quote_char (PARSER_STREAM (parser), quote_char); |
| 710 | |
| 711 | /* This helps the completer mode decide whether we have a |
| 712 | complete string. */ |
| 713 | parser->completion_quote_char = quote_char; |
| 714 | parser->completion_quote_end = end; |
| 715 | |
| 716 | /* Error if the input did not terminate properly, unless in |
| 717 | completion mode. */ |
| 718 | if (end == NULL) |
| 719 | { |
| 720 | if (parser->completion_tracker == NULL) |
| 721 | error (_("unmatched quote")); |
| 722 | |
| 723 | /* In completion mode, we'll try to complete the incomplete |
| 724 | token. */ |
| 725 | token.type = LSTOKEN_STRING; |
| 726 | while (*PARSER_STREAM (parser) != '\0') |
| 727 | PARSER_STREAM (parser)++; |
| 728 | LS_TOKEN_STOKEN (token).length = PARSER_STREAM (parser) - 1 - start; |
| 729 | } |
| 730 | else |
| 731 | { |
| 732 | /* Skip over the ending quote and mark the length of the string. */ |
| 733 | PARSER_STREAM (parser) = (char *) ++end; |
| 734 | LS_TOKEN_STOKEN (token).length = PARSER_STREAM (parser) - 2 - start; |
| 735 | } |
| 736 | } |
| 737 | else |
| 738 | { |
| 739 | const char *p; |
| 740 | |
| 741 | /* Otherwise, only identifier characters are permitted. |
| 742 | Spaces are the exception. In general, we keep spaces, |
| 743 | but only if the next characters in the input do not resolve |
| 744 | to one of the keywords. |
| 745 | |
| 746 | This allows users to forgo quoting CV-qualifiers, template arguments, |
| 747 | and similar common language constructs. */ |
| 748 | |
| 749 | while (1) |
| 750 | { |
| 751 | if (isspace (*PARSER_STREAM (parser))) |
| 752 | { |
| 753 | p = skip_spaces (PARSER_STREAM (parser)); |
| 754 | /* When we get here we know we've found something followed by |
| 755 | a space (we skip over parens and templates below). |
| 756 | So if we find a keyword now, we know it is a keyword and not, |
| 757 | say, a function name. */ |
| 758 | if (linespec_lexer_lex_keyword (p) != NULL) |
| 759 | { |
| 760 | LS_TOKEN_STOKEN (token).ptr = start; |
| 761 | LS_TOKEN_STOKEN (token).length |
| 762 | = PARSER_STREAM (parser) - start; |
| 763 | return token; |
| 764 | } |
| 765 | |
| 766 | /* Advance past the whitespace. */ |
| 767 | PARSER_STREAM (parser) = p; |
| 768 | } |
| 769 | |
| 770 | /* If the next character is EOI or (single) ':', the |
| 771 | string is complete; return the token. */ |
| 772 | if (*PARSER_STREAM (parser) == 0) |
| 773 | { |
| 774 | LS_TOKEN_STOKEN (token).ptr = start; |
| 775 | LS_TOKEN_STOKEN (token).length = PARSER_STREAM (parser) - start; |
| 776 | return token; |
| 777 | } |
| 778 | else if (PARSER_STREAM (parser)[0] == ':') |
| 779 | { |
| 780 | /* Do not tokenize the C++ scope operator. */ |
| 781 | if (PARSER_STREAM (parser)[1] == ':') |
| 782 | ++(PARSER_STREAM (parser)); |
| 783 | |
| 784 | /* Do not tokenize ABI tags such as "[abi:cxx11]". */ |
| 785 | else if (PARSER_STREAM (parser) - start > 4 |
| 786 | && startswith (PARSER_STREAM (parser) - 4, "[abi")) |
| 787 | { |
| 788 | /* Nothing. */ |
| 789 | } |
| 790 | |
| 791 | /* Do not tokenify if the input length so far is one |
| 792 | (i.e, a single-letter drive name) and the next character |
| 793 | is a directory separator. This allows Windows-style |
| 794 | paths to be recognized as filenames without quoting it. */ |
| 795 | else if ((PARSER_STREAM (parser) - start) != 1 |
| 796 | || !IS_DIR_SEPARATOR (PARSER_STREAM (parser)[1])) |
| 797 | { |
| 798 | LS_TOKEN_STOKEN (token).ptr = start; |
| 799 | LS_TOKEN_STOKEN (token).length |
| 800 | = PARSER_STREAM (parser) - start; |
| 801 | return token; |
| 802 | } |
| 803 | } |
| 804 | /* Special case: permit quote-enclosed linespecs. */ |
| 805 | else if (parser->is_quote_enclosed |
| 806 | && strchr (linespec_quote_characters, |
| 807 | *PARSER_STREAM (parser)) |
| 808 | && is_closing_quote_enclosed (PARSER_STREAM (parser))) |
| 809 | { |
| 810 | LS_TOKEN_STOKEN (token).ptr = start; |
| 811 | LS_TOKEN_STOKEN (token).length = PARSER_STREAM (parser) - start; |
| 812 | return token; |
| 813 | } |
| 814 | /* Because commas may terminate a linespec and appear in |
| 815 | the middle of valid string input, special cases for |
| 816 | '<' and '(' are necessary. */ |
| 817 | else if (*PARSER_STREAM (parser) == '<' |
| 818 | || *PARSER_STREAM (parser) == '(') |
| 819 | { |
| 820 | /* Don't interpret 'operator<' / 'operator<<' as a |
| 821 | template parameter list though. */ |
| 822 | if (*PARSER_STREAM (parser) == '<' |
| 823 | && (PARSER_STATE (parser)->language->la_language |
| 824 | == language_cplus) |
| 825 | && (PARSER_STREAM (parser) - start) >= CP_OPERATOR_LEN) |
| 826 | { |
| 827 | const char *op = PARSER_STREAM (parser); |
| 828 | |
| 829 | while (op > start && isspace (op[-1])) |
| 830 | op--; |
| 831 | if (op - start >= CP_OPERATOR_LEN) |
| 832 | { |
| 833 | op -= CP_OPERATOR_LEN; |
| 834 | if (strncmp (op, CP_OPERATOR_STR, CP_OPERATOR_LEN) == 0 |
| 835 | && (op == start |
| 836 | || !(isalnum (op[-1]) || op[-1] == '_'))) |
| 837 | { |
| 838 | /* This is an operator name. Keep going. */ |
| 839 | ++(PARSER_STREAM (parser)); |
| 840 | if (*PARSER_STREAM (parser) == '<') |
| 841 | ++(PARSER_STREAM (parser)); |
| 842 | continue; |
| 843 | } |
| 844 | } |
| 845 | } |
| 846 | |
| 847 | const char *end = find_parameter_list_end (PARSER_STREAM (parser)); |
| 848 | PARSER_STREAM (parser) = end; |
| 849 | |
| 850 | /* Don't loop around to the normal \0 case above because |
| 851 | we don't want to misinterpret a potential keyword at |
| 852 | the end of the token when the string isn't |
| 853 | "()<>"-balanced. This handles "b |
| 854 | function(thread<tab>" in completion mode. */ |
| 855 | if (*end == '\0') |
| 856 | { |
| 857 | LS_TOKEN_STOKEN (token).ptr = start; |
| 858 | LS_TOKEN_STOKEN (token).length |
| 859 | = PARSER_STREAM (parser) - start; |
| 860 | return token; |
| 861 | } |
| 862 | else |
| 863 | continue; |
| 864 | } |
| 865 | /* Commas are terminators, but not if they are part of an |
| 866 | operator name. */ |
| 867 | else if (*PARSER_STREAM (parser) == ',') |
| 868 | { |
| 869 | if ((PARSER_STATE (parser)->language->la_language |
| 870 | == language_cplus) |
| 871 | && (PARSER_STREAM (parser) - start) > CP_OPERATOR_LEN) |
| 872 | { |
| 873 | const char *op = strstr (start, CP_OPERATOR_STR); |
| 874 | |
| 875 | if (op != NULL && is_operator_name (op)) |
| 876 | { |
| 877 | /* This is an operator name. Keep going. */ |
| 878 | ++(PARSER_STREAM (parser)); |
| 879 | continue; |
| 880 | } |
| 881 | } |
| 882 | |
| 883 | /* Comma terminates the string. */ |
| 884 | LS_TOKEN_STOKEN (token).ptr = start; |
| 885 | LS_TOKEN_STOKEN (token).length = PARSER_STREAM (parser) - start; |
| 886 | return token; |
| 887 | } |
| 888 | |
| 889 | /* Advance the stream. */ |
| 890 | gdb_assert (*(PARSER_STREAM (parser)) != '\0'); |
| 891 | ++(PARSER_STREAM (parser)); |
| 892 | } |
| 893 | } |
| 894 | |
| 895 | return token; |
| 896 | } |
| 897 | |
| 898 | /* Lex a single linespec token from PARSER. */ |
| 899 | |
| 900 | static linespec_token |
| 901 | linespec_lexer_lex_one (linespec_parser *parser) |
| 902 | { |
| 903 | const char *keyword; |
| 904 | |
| 905 | if (parser->lexer.current.type == LSTOKEN_CONSUMED) |
| 906 | { |
| 907 | /* Skip any whitespace. */ |
| 908 | PARSER_STREAM (parser) = skip_spaces (PARSER_STREAM (parser)); |
| 909 | |
| 910 | /* Check for a keyword, they end the linespec. */ |
| 911 | keyword = linespec_lexer_lex_keyword (PARSER_STREAM (parser)); |
| 912 | if (keyword != NULL) |
| 913 | { |
| 914 | parser->lexer.current.type = LSTOKEN_KEYWORD; |
| 915 | LS_TOKEN_KEYWORD (parser->lexer.current) = keyword; |
| 916 | /* We do not advance the stream here intentionally: |
| 917 | we would like lexing to stop when a keyword is seen. |
| 918 | |
| 919 | PARSER_STREAM (parser) += strlen (keyword); */ |
| 920 | |
| 921 | return parser->lexer.current; |
| 922 | } |
| 923 | |
| 924 | /* Handle other tokens. */ |
| 925 | switch (*PARSER_STREAM (parser)) |
| 926 | { |
| 927 | case 0: |
| 928 | parser->lexer.current.type = LSTOKEN_EOI; |
| 929 | break; |
| 930 | |
| 931 | case '+': case '-': |
| 932 | case '0': case '1': case '2': case '3': case '4': |
| 933 | case '5': case '6': case '7': case '8': case '9': |
| 934 | if (!linespec_lexer_lex_number (parser, &(parser->lexer.current))) |
| 935 | parser->lexer.current = linespec_lexer_lex_string (parser); |
| 936 | break; |
| 937 | |
| 938 | case ':': |
| 939 | /* If we have a scope operator, lex the input as a string. |
| 940 | Otherwise, return LSTOKEN_COLON. */ |
| 941 | if (PARSER_STREAM (parser)[1] == ':') |
| 942 | parser->lexer.current = linespec_lexer_lex_string (parser); |
| 943 | else |
| 944 | { |
| 945 | parser->lexer.current.type = LSTOKEN_COLON; |
| 946 | ++(PARSER_STREAM (parser)); |
| 947 | } |
| 948 | break; |
| 949 | |
| 950 | case '\'': case '\"': |
| 951 | /* Special case: permit quote-enclosed linespecs. */ |
| 952 | if (parser->is_quote_enclosed |
| 953 | && is_closing_quote_enclosed (PARSER_STREAM (parser))) |
| 954 | { |
| 955 | ++(PARSER_STREAM (parser)); |
| 956 | parser->lexer.current.type = LSTOKEN_EOI; |
| 957 | } |
| 958 | else |
| 959 | parser->lexer.current = linespec_lexer_lex_string (parser); |
| 960 | break; |
| 961 | |
| 962 | case ',': |
| 963 | parser->lexer.current.type = LSTOKEN_COMMA; |
| 964 | LS_TOKEN_STOKEN (parser->lexer.current).ptr |
| 965 | = PARSER_STREAM (parser); |
| 966 | LS_TOKEN_STOKEN (parser->lexer.current).length = 1; |
| 967 | ++(PARSER_STREAM (parser)); |
| 968 | break; |
| 969 | |
| 970 | default: |
| 971 | /* If the input is not a number, it must be a string. |
| 972 | [Keywords were already considered above.] */ |
| 973 | parser->lexer.current = linespec_lexer_lex_string (parser); |
| 974 | break; |
| 975 | } |
| 976 | } |
| 977 | |
| 978 | return parser->lexer.current; |
| 979 | } |
| 980 | |
| 981 | /* Consume the current token and return the next token in PARSER's |
| 982 | input stream. Also advance the completion word for completion |
| 983 | mode. */ |
| 984 | |
| 985 | static linespec_token |
| 986 | linespec_lexer_consume_token (linespec_parser *parser) |
| 987 | { |
| 988 | gdb_assert (parser->lexer.current.type != LSTOKEN_EOI); |
| 989 | |
| 990 | bool advance_word = (parser->lexer.current.type != LSTOKEN_STRING |
| 991 | || *PARSER_STREAM (parser) != '\0'); |
| 992 | |
| 993 | /* If we're moving past a string to some other token, it must be the |
| 994 | quote was terminated. */ |
| 995 | if (parser->completion_quote_char) |
| 996 | { |
| 997 | gdb_assert (parser->lexer.current.type == LSTOKEN_STRING); |
| 998 | |
| 999 | /* If the string was the last (non-EOI) token, we're past the |
| 1000 | quote, but remember that for later. */ |
| 1001 | if (*PARSER_STREAM (parser) != '\0') |
| 1002 | { |
| 1003 | parser->completion_quote_char = '\0'; |
| 1004 | parser->completion_quote_end = NULL;; |
| 1005 | } |
| 1006 | } |
| 1007 | |
| 1008 | parser->lexer.current.type = LSTOKEN_CONSUMED; |
| 1009 | linespec_lexer_lex_one (parser); |
| 1010 | |
| 1011 | if (parser->lexer.current.type == LSTOKEN_STRING) |
| 1012 | { |
| 1013 | /* Advance the completion word past a potential initial |
| 1014 | quote-char. */ |
| 1015 | parser->completion_word = LS_TOKEN_STOKEN (parser->lexer.current).ptr; |
| 1016 | } |
| 1017 | else if (advance_word) |
| 1018 | { |
| 1019 | /* Advance the completion word past any whitespace. */ |
| 1020 | parser->completion_word = PARSER_STREAM (parser); |
| 1021 | } |
| 1022 | |
| 1023 | return parser->lexer.current; |
| 1024 | } |
| 1025 | |
| 1026 | /* Return the next token without consuming the current token. */ |
| 1027 | |
| 1028 | static linespec_token |
| 1029 | linespec_lexer_peek_token (linespec_parser *parser) |
| 1030 | { |
| 1031 | linespec_token next; |
| 1032 | const char *saved_stream = PARSER_STREAM (parser); |
| 1033 | linespec_token saved_token = parser->lexer.current; |
| 1034 | int saved_completion_quote_char = parser->completion_quote_char; |
| 1035 | const char *saved_completion_quote_end = parser->completion_quote_end; |
| 1036 | const char *saved_completion_word = parser->completion_word; |
| 1037 | |
| 1038 | next = linespec_lexer_consume_token (parser); |
| 1039 | PARSER_STREAM (parser) = saved_stream; |
| 1040 | parser->lexer.current = saved_token; |
| 1041 | parser->completion_quote_char = saved_completion_quote_char; |
| 1042 | parser->completion_quote_end = saved_completion_quote_end; |
| 1043 | parser->completion_word = saved_completion_word; |
| 1044 | return next; |
| 1045 | } |
| 1046 | |
| 1047 | /* Helper functions. */ |
| 1048 | |
| 1049 | /* Add SAL to SALS, and also update SELF->CANONICAL_NAMES to reflect |
| 1050 | the new sal, if needed. If not NULL, SYMNAME is the name of the |
| 1051 | symbol to use when constructing the new canonical name. |
| 1052 | |
| 1053 | If LITERAL_CANONICAL is non-zero, SYMNAME will be used as the |
| 1054 | canonical name for the SAL. */ |
| 1055 | |
| 1056 | static void |
| 1057 | add_sal_to_sals (struct linespec_state *self, |
| 1058 | std::vector<symtab_and_line> *sals, |
| 1059 | struct symtab_and_line *sal, |
| 1060 | const char *symname, int literal_canonical) |
| 1061 | { |
| 1062 | sals->push_back (*sal); |
| 1063 | |
| 1064 | if (self->canonical) |
| 1065 | { |
| 1066 | struct linespec_canonical_name *canonical; |
| 1067 | |
| 1068 | self->canonical_names = XRESIZEVEC (struct linespec_canonical_name, |
| 1069 | self->canonical_names, |
| 1070 | sals->size ()); |
| 1071 | canonical = &self->canonical_names[sals->size () - 1]; |
| 1072 | if (!literal_canonical && sal->symtab) |
| 1073 | { |
| 1074 | symtab_to_fullname (sal->symtab); |
| 1075 | |
| 1076 | /* Note that the filter doesn't have to be a valid linespec |
| 1077 | input. We only apply the ":LINE" treatment to Ada for |
| 1078 | the time being. */ |
| 1079 | if (symname != NULL && sal->line != 0 |
| 1080 | && self->language->la_language == language_ada) |
| 1081 | canonical->suffix = xstrprintf ("%s:%d", symname, sal->line); |
| 1082 | else if (symname != NULL) |
| 1083 | canonical->suffix = xstrdup (symname); |
| 1084 | else |
| 1085 | canonical->suffix = xstrprintf ("%d", sal->line); |
| 1086 | canonical->symtab = sal->symtab; |
| 1087 | } |
| 1088 | else |
| 1089 | { |
| 1090 | if (symname != NULL) |
| 1091 | canonical->suffix = xstrdup (symname); |
| 1092 | else |
| 1093 | canonical->suffix = xstrdup ("<unknown>"); |
| 1094 | canonical->symtab = NULL; |
| 1095 | } |
| 1096 | } |
| 1097 | } |
| 1098 | |
| 1099 | /* A hash function for address_entry. */ |
| 1100 | |
| 1101 | static hashval_t |
| 1102 | hash_address_entry (const void *p) |
| 1103 | { |
| 1104 | const struct address_entry *aep = (const struct address_entry *) p; |
| 1105 | hashval_t hash; |
| 1106 | |
| 1107 | hash = iterative_hash_object (aep->pspace, 0); |
| 1108 | return iterative_hash_object (aep->addr, hash); |
| 1109 | } |
| 1110 | |
| 1111 | /* An equality function for address_entry. */ |
| 1112 | |
| 1113 | static int |
| 1114 | eq_address_entry (const void *a, const void *b) |
| 1115 | { |
| 1116 | const struct address_entry *aea = (const struct address_entry *) a; |
| 1117 | const struct address_entry *aeb = (const struct address_entry *) b; |
| 1118 | |
| 1119 | return aea->pspace == aeb->pspace && aea->addr == aeb->addr; |
| 1120 | } |
| 1121 | |
| 1122 | /* Check whether the address, represented by PSPACE and ADDR, is |
| 1123 | already in the set. If so, return 0. Otherwise, add it and return |
| 1124 | 1. */ |
| 1125 | |
| 1126 | static int |
| 1127 | maybe_add_address (htab_t set, struct program_space *pspace, CORE_ADDR addr) |
| 1128 | { |
| 1129 | struct address_entry e, *p; |
| 1130 | void **slot; |
| 1131 | |
| 1132 | e.pspace = pspace; |
| 1133 | e.addr = addr; |
| 1134 | slot = htab_find_slot (set, &e, INSERT); |
| 1135 | if (*slot) |
| 1136 | return 0; |
| 1137 | |
| 1138 | p = XNEW (struct address_entry); |
| 1139 | memcpy (p, &e, sizeof (struct address_entry)); |
| 1140 | *slot = p; |
| 1141 | |
| 1142 | return 1; |
| 1143 | } |
| 1144 | |
| 1145 | /* A helper that walks over all matching symtabs in all objfiles and |
| 1146 | calls CALLBACK for each symbol matching NAME. If SEARCH_PSPACE is |
| 1147 | not NULL, then the search is restricted to just that program |
| 1148 | space. If INCLUDE_INLINE is true then symbols representing |
| 1149 | inlined instances of functions will be included in the result. */ |
| 1150 | |
| 1151 | static void |
| 1152 | iterate_over_all_matching_symtabs |
| 1153 | (struct linespec_state *state, |
| 1154 | const lookup_name_info &lookup_name, |
| 1155 | const domain_enum name_domain, |
| 1156 | enum search_domain search_domain, |
| 1157 | struct program_space *search_pspace, bool include_inline, |
| 1158 | gdb::function_view<symbol_found_callback_ftype> callback) |
| 1159 | { |
| 1160 | for (struct program_space *pspace : program_spaces) |
| 1161 | { |
| 1162 | if (search_pspace != NULL && search_pspace != pspace) |
| 1163 | continue; |
| 1164 | if (pspace->executing_startup) |
| 1165 | continue; |
| 1166 | |
| 1167 | set_current_program_space (pspace); |
| 1168 | |
| 1169 | for (objfile *objfile : current_program_space->objfiles ()) |
| 1170 | { |
| 1171 | if (objfile->sf) |
| 1172 | objfile->sf->qf->expand_symtabs_matching (objfile, |
| 1173 | NULL, |
| 1174 | &lookup_name, |
| 1175 | NULL, NULL, |
| 1176 | search_domain); |
| 1177 | |
| 1178 | for (compunit_symtab *cu : objfile->compunits ()) |
| 1179 | { |
| 1180 | struct symtab *symtab = COMPUNIT_FILETABS (cu); |
| 1181 | |
| 1182 | iterate_over_file_blocks (symtab, lookup_name, name_domain, |
| 1183 | callback); |
| 1184 | |
| 1185 | if (include_inline) |
| 1186 | { |
| 1187 | const struct block *block; |
| 1188 | int i; |
| 1189 | |
| 1190 | for (i = FIRST_LOCAL_BLOCK; |
| 1191 | i < BLOCKVECTOR_NBLOCKS (SYMTAB_BLOCKVECTOR (symtab)); |
| 1192 | i++) |
| 1193 | { |
| 1194 | block = BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (symtab), i); |
| 1195 | state->language->iterate_over_symbols |
| 1196 | (block, lookup_name, name_domain, |
| 1197 | [&] (block_symbol *bsym) |
| 1198 | { |
| 1199 | /* Restrict calls to CALLBACK to symbols |
| 1200 | representing inline symbols only. */ |
| 1201 | if (SYMBOL_INLINED (bsym->symbol)) |
| 1202 | return callback (bsym); |
| 1203 | return true; |
| 1204 | }); |
| 1205 | } |
| 1206 | } |
| 1207 | } |
| 1208 | } |
| 1209 | } |
| 1210 | } |
| 1211 | |
| 1212 | /* Returns the block to be used for symbol searches from |
| 1213 | the current location. */ |
| 1214 | |
| 1215 | static const struct block * |
| 1216 | get_current_search_block (void) |
| 1217 | { |
| 1218 | /* get_selected_block can change the current language when there is |
| 1219 | no selected frame yet. */ |
| 1220 | scoped_restore_current_language save_language; |
| 1221 | return get_selected_block (0); |
| 1222 | } |
| 1223 | |
| 1224 | /* Iterate over static and global blocks. */ |
| 1225 | |
| 1226 | static void |
| 1227 | iterate_over_file_blocks |
| 1228 | (struct symtab *symtab, const lookup_name_info &name, |
| 1229 | domain_enum domain, gdb::function_view<symbol_found_callback_ftype> callback) |
| 1230 | { |
| 1231 | const struct block *block; |
| 1232 | |
| 1233 | for (block = BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (symtab), STATIC_BLOCK); |
| 1234 | block != NULL; |
| 1235 | block = BLOCK_SUPERBLOCK (block)) |
| 1236 | current_language->iterate_over_symbols (block, name, domain, callback); |
| 1237 | } |
| 1238 | |
| 1239 | /* A helper for find_method. This finds all methods in type T of |
| 1240 | language T_LANG which match NAME. It adds matching symbol names to |
| 1241 | RESULT_NAMES, and adds T's direct superclasses to SUPERCLASSES. */ |
| 1242 | |
| 1243 | static void |
| 1244 | find_methods (struct type *t, enum language t_lang, const char *name, |
| 1245 | std::vector<const char *> *result_names, |
| 1246 | std::vector<struct type *> *superclasses) |
| 1247 | { |
| 1248 | int ibase; |
| 1249 | const char *class_name = t->name (); |
| 1250 | |
| 1251 | /* Ignore this class if it doesn't have a name. This is ugly, but |
| 1252 | unless we figure out how to get the physname without the name of |
| 1253 | the class, then the loop can't do any good. */ |
| 1254 | if (class_name) |
| 1255 | { |
| 1256 | int method_counter; |
| 1257 | lookup_name_info lookup_name (name, symbol_name_match_type::FULL); |
| 1258 | symbol_name_matcher_ftype *symbol_name_compare |
| 1259 | = language_def (t_lang)->get_symbol_name_matcher (lookup_name); |
| 1260 | |
| 1261 | t = check_typedef (t); |
| 1262 | |
| 1263 | /* Loop over each method name. At this level, all overloads of a name |
| 1264 | are counted as a single name. There is an inner loop which loops over |
| 1265 | each overload. */ |
| 1266 | |
| 1267 | for (method_counter = TYPE_NFN_FIELDS (t) - 1; |
| 1268 | method_counter >= 0; |
| 1269 | --method_counter) |
| 1270 | { |
| 1271 | const char *method_name = TYPE_FN_FIELDLIST_NAME (t, method_counter); |
| 1272 | |
| 1273 | if (symbol_name_compare (method_name, lookup_name, NULL)) |
| 1274 | { |
| 1275 | int field_counter; |
| 1276 | |
| 1277 | for (field_counter = (TYPE_FN_FIELDLIST_LENGTH (t, method_counter) |
| 1278 | - 1); |
| 1279 | field_counter >= 0; |
| 1280 | --field_counter) |
| 1281 | { |
| 1282 | struct fn_field *f; |
| 1283 | const char *phys_name; |
| 1284 | |
| 1285 | f = TYPE_FN_FIELDLIST1 (t, method_counter); |
| 1286 | if (TYPE_FN_FIELD_STUB (f, field_counter)) |
| 1287 | continue; |
| 1288 | phys_name = TYPE_FN_FIELD_PHYSNAME (f, field_counter); |
| 1289 | result_names->push_back (phys_name); |
| 1290 | } |
| 1291 | } |
| 1292 | } |
| 1293 | } |
| 1294 | |
| 1295 | for (ibase = 0; ibase < TYPE_N_BASECLASSES (t); ibase++) |
| 1296 | superclasses->push_back (TYPE_BASECLASS (t, ibase)); |
| 1297 | } |
| 1298 | |
| 1299 | /* Find an instance of the character C in the string S that is outside |
| 1300 | of all parenthesis pairs, single-quoted strings, and double-quoted |
| 1301 | strings. Also, ignore the char within a template name, like a ',' |
| 1302 | within foo<int, int>, while considering C++ operator</operator<<. */ |
| 1303 | |
| 1304 | const char * |
| 1305 | find_toplevel_char (const char *s, char c) |
| 1306 | { |
| 1307 | int quoted = 0; /* zero if we're not in quotes; |
| 1308 | '"' if we're in a double-quoted string; |
| 1309 | '\'' if we're in a single-quoted string. */ |
| 1310 | int depth = 0; /* Number of unclosed parens we've seen. */ |
| 1311 | const char *scan; |
| 1312 | |
| 1313 | for (scan = s; *scan; scan++) |
| 1314 | { |
| 1315 | if (quoted) |
| 1316 | { |
| 1317 | if (*scan == quoted) |
| 1318 | quoted = 0; |
| 1319 | else if (*scan == '\\' && *(scan + 1)) |
| 1320 | scan++; |
| 1321 | } |
| 1322 | else if (*scan == c && ! quoted && depth == 0) |
| 1323 | return scan; |
| 1324 | else if (*scan == '"' || *scan == '\'') |
| 1325 | quoted = *scan; |
| 1326 | else if (*scan == '(' || *scan == '<') |
| 1327 | depth++; |
| 1328 | else if ((*scan == ')' || *scan == '>') && depth > 0) |
| 1329 | depth--; |
| 1330 | else if (*scan == 'o' && !quoted && depth == 0) |
| 1331 | { |
| 1332 | /* Handle C++ operator names. */ |
| 1333 | if (strncmp (scan, CP_OPERATOR_STR, CP_OPERATOR_LEN) == 0) |
| 1334 | { |
| 1335 | scan += CP_OPERATOR_LEN; |
| 1336 | if (*scan == c) |
| 1337 | return scan; |
| 1338 | while (isspace (*scan)) |
| 1339 | { |
| 1340 | ++scan; |
| 1341 | if (*scan == c) |
| 1342 | return scan; |
| 1343 | } |
| 1344 | if (*scan == '\0') |
| 1345 | break; |
| 1346 | |
| 1347 | switch (*scan) |
| 1348 | { |
| 1349 | /* Skip over one less than the appropriate number of |
| 1350 | characters: the for loop will skip over the last |
| 1351 | one. */ |
| 1352 | case '<': |
| 1353 | if (scan[1] == '<') |
| 1354 | { |
| 1355 | scan++; |
| 1356 | if (*scan == c) |
| 1357 | return scan; |
| 1358 | } |
| 1359 | break; |
| 1360 | case '>': |
| 1361 | if (scan[1] == '>') |
| 1362 | { |
| 1363 | scan++; |
| 1364 | if (*scan == c) |
| 1365 | return scan; |
| 1366 | } |
| 1367 | break; |
| 1368 | } |
| 1369 | } |
| 1370 | } |
| 1371 | } |
| 1372 | |
| 1373 | return 0; |
| 1374 | } |
| 1375 | |
| 1376 | /* The string equivalent of find_toplevel_char. Returns a pointer |
| 1377 | to the location of NEEDLE in HAYSTACK, ignoring any occurrences |
| 1378 | inside "()" and "<>". Returns NULL if NEEDLE was not found. */ |
| 1379 | |
| 1380 | static const char * |
| 1381 | find_toplevel_string (const char *haystack, const char *needle) |
| 1382 | { |
| 1383 | const char *s = haystack; |
| 1384 | |
| 1385 | do |
| 1386 | { |
| 1387 | s = find_toplevel_char (s, *needle); |
| 1388 | |
| 1389 | if (s != NULL) |
| 1390 | { |
| 1391 | /* Found first char in HAYSTACK; check rest of string. */ |
| 1392 | if (startswith (s, needle)) |
| 1393 | return s; |
| 1394 | |
| 1395 | /* Didn't find it; loop over HAYSTACK, looking for the next |
| 1396 | instance of the first character of NEEDLE. */ |
| 1397 | ++s; |
| 1398 | } |
| 1399 | } |
| 1400 | while (s != NULL && *s != '\0'); |
| 1401 | |
| 1402 | /* NEEDLE was not found in HAYSTACK. */ |
| 1403 | return NULL; |
| 1404 | } |
| 1405 | |
| 1406 | /* Convert CANONICAL to its string representation using |
| 1407 | symtab_to_fullname for SYMTAB. */ |
| 1408 | |
| 1409 | static std::string |
| 1410 | canonical_to_fullform (const struct linespec_canonical_name *canonical) |
| 1411 | { |
| 1412 | if (canonical->symtab == NULL) |
| 1413 | return canonical->suffix; |
| 1414 | else |
| 1415 | return string_printf ("%s:%s", symtab_to_fullname (canonical->symtab), |
| 1416 | canonical->suffix); |
| 1417 | } |
| 1418 | |
| 1419 | /* Given FILTERS, a list of canonical names, filter the sals in RESULT |
| 1420 | and store the result in SELF->CANONICAL. */ |
| 1421 | |
| 1422 | static void |
| 1423 | filter_results (struct linespec_state *self, |
| 1424 | std::vector<symtab_and_line> *result, |
| 1425 | const std::vector<const char *> &filters) |
| 1426 | { |
| 1427 | for (const char *name : filters) |
| 1428 | { |
| 1429 | linespec_sals lsal; |
| 1430 | |
| 1431 | for (size_t j = 0; j < result->size (); ++j) |
| 1432 | { |
| 1433 | const struct linespec_canonical_name *canonical; |
| 1434 | |
| 1435 | canonical = &self->canonical_names[j]; |
| 1436 | std::string fullform = canonical_to_fullform (canonical); |
| 1437 | |
| 1438 | if (name == fullform) |
| 1439 | lsal.sals.push_back ((*result)[j]); |
| 1440 | } |
| 1441 | |
| 1442 | if (!lsal.sals.empty ()) |
| 1443 | { |
| 1444 | lsal.canonical = xstrdup (name); |
| 1445 | self->canonical->lsals.push_back (std::move (lsal)); |
| 1446 | } |
| 1447 | } |
| 1448 | |
| 1449 | self->canonical->pre_expanded = 0; |
| 1450 | } |
| 1451 | |
| 1452 | /* Store RESULT into SELF->CANONICAL. */ |
| 1453 | |
| 1454 | static void |
| 1455 | convert_results_to_lsals (struct linespec_state *self, |
| 1456 | std::vector<symtab_and_line> *result) |
| 1457 | { |
| 1458 | struct linespec_sals lsal; |
| 1459 | |
| 1460 | lsal.canonical = NULL; |
| 1461 | lsal.sals = std::move (*result); |
| 1462 | self->canonical->lsals.push_back (std::move (lsal)); |
| 1463 | } |
| 1464 | |
| 1465 | /* A structure that contains two string representations of a struct |
| 1466 | linespec_canonical_name: |
| 1467 | - one where the symtab's fullname is used; |
| 1468 | - one where the filename followed the "set filename-display" |
| 1469 | setting. */ |
| 1470 | |
| 1471 | struct decode_line_2_item |
| 1472 | { |
| 1473 | decode_line_2_item (std::string &&fullform_, std::string &&displayform_, |
| 1474 | bool selected_) |
| 1475 | : fullform (std::move (fullform_)), |
| 1476 | displayform (std::move (displayform_)), |
| 1477 | selected (selected_) |
| 1478 | { |
| 1479 | } |
| 1480 | |
| 1481 | /* The form using symtab_to_fullname. */ |
| 1482 | std::string fullform; |
| 1483 | |
| 1484 | /* The form using symtab_to_filename_for_display. */ |
| 1485 | std::string displayform; |
| 1486 | |
| 1487 | /* Field is initialized to zero and it is set to one if the user |
| 1488 | requested breakpoint for this entry. */ |
| 1489 | unsigned int selected : 1; |
| 1490 | }; |
| 1491 | |
| 1492 | /* Helper for std::sort to sort decode_line_2_item entries by |
| 1493 | DISPLAYFORM and secondarily by FULLFORM. */ |
| 1494 | |
| 1495 | static bool |
| 1496 | decode_line_2_compare_items (const decode_line_2_item &a, |
| 1497 | const decode_line_2_item &b) |
| 1498 | { |
| 1499 | if (a.displayform != b.displayform) |
| 1500 | return a.displayform < b.displayform; |
| 1501 | return a.fullform < b.fullform; |
| 1502 | } |
| 1503 | |
| 1504 | /* Handle multiple results in RESULT depending on SELECT_MODE. This |
| 1505 | will either return normally, throw an exception on multiple |
| 1506 | results, or present a menu to the user. On return, the SALS vector |
| 1507 | in SELF->CANONICAL is set up properly. */ |
| 1508 | |
| 1509 | static void |
| 1510 | decode_line_2 (struct linespec_state *self, |
| 1511 | std::vector<symtab_and_line> *result, |
| 1512 | const char *select_mode) |
| 1513 | { |
| 1514 | const char *args; |
| 1515 | const char *prompt; |
| 1516 | int i; |
| 1517 | std::vector<const char *> filters; |
| 1518 | std::vector<struct decode_line_2_item> items; |
| 1519 | |
| 1520 | gdb_assert (select_mode != multiple_symbols_all); |
| 1521 | gdb_assert (self->canonical != NULL); |
| 1522 | gdb_assert (!result->empty ()); |
| 1523 | |
| 1524 | /* Prepare ITEMS array. */ |
| 1525 | for (i = 0; i < result->size (); ++i) |
| 1526 | { |
| 1527 | const struct linespec_canonical_name *canonical; |
| 1528 | std::string displayform; |
| 1529 | |
| 1530 | canonical = &self->canonical_names[i]; |
| 1531 | gdb_assert (canonical->suffix != NULL); |
| 1532 | |
| 1533 | std::string fullform = canonical_to_fullform (canonical); |
| 1534 | |
| 1535 | if (canonical->symtab == NULL) |
| 1536 | displayform = canonical->suffix; |
| 1537 | else |
| 1538 | { |
| 1539 | const char *fn_for_display; |
| 1540 | |
| 1541 | fn_for_display = symtab_to_filename_for_display (canonical->symtab); |
| 1542 | displayform = string_printf ("%s:%s", fn_for_display, |
| 1543 | canonical->suffix); |
| 1544 | } |
| 1545 | |
| 1546 | items.emplace_back (std::move (fullform), std::move (displayform), |
| 1547 | false); |
| 1548 | } |
| 1549 | |
| 1550 | /* Sort the list of method names. */ |
| 1551 | std::sort (items.begin (), items.end (), decode_line_2_compare_items); |
| 1552 | |
| 1553 | /* Remove entries with the same FULLFORM. */ |
| 1554 | items.erase (std::unique (items.begin (), items.end (), |
| 1555 | [] (const struct decode_line_2_item &a, |
| 1556 | const struct decode_line_2_item &b) |
| 1557 | { |
| 1558 | return a.fullform == b.fullform; |
| 1559 | }), |
| 1560 | items.end ()); |
| 1561 | |
| 1562 | if (select_mode == multiple_symbols_cancel && items.size () > 1) |
| 1563 | error (_("canceled because the command is ambiguous\n" |
| 1564 | "See set/show multiple-symbol.")); |
| 1565 | |
| 1566 | if (select_mode == multiple_symbols_all || items.size () == 1) |
| 1567 | { |
| 1568 | convert_results_to_lsals (self, result); |
| 1569 | return; |
| 1570 | } |
| 1571 | |
| 1572 | printf_unfiltered (_("[0] cancel\n[1] all\n")); |
| 1573 | for (i = 0; i < items.size (); i++) |
| 1574 | printf_unfiltered ("[%d] %s\n", i + 2, items[i].displayform.c_str ()); |
| 1575 | |
| 1576 | prompt = getenv ("PS2"); |
| 1577 | if (prompt == NULL) |
| 1578 | { |
| 1579 | prompt = "> "; |
| 1580 | } |
| 1581 | args = command_line_input (prompt, "overload-choice"); |
| 1582 | |
| 1583 | if (args == 0 || *args == 0) |
| 1584 | error_no_arg (_("one or more choice numbers")); |
| 1585 | |
| 1586 | number_or_range_parser parser (args); |
| 1587 | while (!parser.finished ()) |
| 1588 | { |
| 1589 | int num = parser.get_number (); |
| 1590 | |
| 1591 | if (num == 0) |
| 1592 | error (_("canceled")); |
| 1593 | else if (num == 1) |
| 1594 | { |
| 1595 | /* We intentionally make this result in a single breakpoint, |
| 1596 | contrary to what older versions of gdb did. The |
| 1597 | rationale is that this lets a user get the |
| 1598 | multiple_symbols_all behavior even with the 'ask' |
| 1599 | setting; and he can get separate breakpoints by entering |
| 1600 | "2-57" at the query. */ |
| 1601 | convert_results_to_lsals (self, result); |
| 1602 | return; |
| 1603 | } |
| 1604 | |
| 1605 | num -= 2; |
| 1606 | if (num >= items.size ()) |
| 1607 | printf_unfiltered (_("No choice number %d.\n"), num); |
| 1608 | else |
| 1609 | { |
| 1610 | struct decode_line_2_item *item = &items[num]; |
| 1611 | |
| 1612 | if (!item->selected) |
| 1613 | { |
| 1614 | filters.push_back (item->fullform.c_str ()); |
| 1615 | item->selected = 1; |
| 1616 | } |
| 1617 | else |
| 1618 | { |
| 1619 | printf_unfiltered (_("duplicate request for %d ignored.\n"), |
| 1620 | num + 2); |
| 1621 | } |
| 1622 | } |
| 1623 | } |
| 1624 | |
| 1625 | filter_results (self, result, filters); |
| 1626 | } |
| 1627 | |
| 1628 | \f |
| 1629 | |
| 1630 | /* The parser of linespec itself. */ |
| 1631 | |
| 1632 | /* Throw an appropriate error when SYMBOL is not found (optionally in |
| 1633 | FILENAME). */ |
| 1634 | |
| 1635 | static void ATTRIBUTE_NORETURN |
| 1636 | symbol_not_found_error (const char *symbol, const char *filename) |
| 1637 | { |
| 1638 | if (symbol == NULL) |
| 1639 | symbol = ""; |
| 1640 | |
| 1641 | if (!have_full_symbols () |
| 1642 | && !have_partial_symbols () |
| 1643 | && !have_minimal_symbols ()) |
| 1644 | throw_error (NOT_FOUND_ERROR, |
| 1645 | _("No symbol table is loaded. Use the \"file\" command.")); |
| 1646 | |
| 1647 | /* If SYMBOL starts with '$', the user attempted to either lookup |
| 1648 | a function/variable in his code starting with '$' or an internal |
| 1649 | variable of that name. Since we do not know which, be concise and |
| 1650 | explain both possibilities. */ |
| 1651 | if (*symbol == '$') |
| 1652 | { |
| 1653 | if (filename) |
| 1654 | throw_error (NOT_FOUND_ERROR, |
| 1655 | _("Undefined convenience variable or function \"%s\" " |
| 1656 | "not defined in \"%s\"."), symbol, filename); |
| 1657 | else |
| 1658 | throw_error (NOT_FOUND_ERROR, |
| 1659 | _("Undefined convenience variable or function \"%s\" " |
| 1660 | "not defined."), symbol); |
| 1661 | } |
| 1662 | else |
| 1663 | { |
| 1664 | if (filename) |
| 1665 | throw_error (NOT_FOUND_ERROR, |
| 1666 | _("Function \"%s\" not defined in \"%s\"."), |
| 1667 | symbol, filename); |
| 1668 | else |
| 1669 | throw_error (NOT_FOUND_ERROR, |
| 1670 | _("Function \"%s\" not defined."), symbol); |
| 1671 | } |
| 1672 | } |
| 1673 | |
| 1674 | /* Throw an appropriate error when an unexpected token is encountered |
| 1675 | in the input. */ |
| 1676 | |
| 1677 | static void ATTRIBUTE_NORETURN |
| 1678 | unexpected_linespec_error (linespec_parser *parser) |
| 1679 | { |
| 1680 | linespec_token token; |
| 1681 | static const char * token_type_strings[] |
| 1682 | = {"keyword", "colon", "string", "number", "comma", "end of input"}; |
| 1683 | |
| 1684 | /* Get the token that generated the error. */ |
| 1685 | token = linespec_lexer_lex_one (parser); |
| 1686 | |
| 1687 | /* Finally, throw the error. */ |
| 1688 | if (token.type == LSTOKEN_STRING || token.type == LSTOKEN_NUMBER |
| 1689 | || token.type == LSTOKEN_KEYWORD) |
| 1690 | { |
| 1691 | gdb::unique_xmalloc_ptr<char> string = copy_token_string (token); |
| 1692 | throw_error (GENERIC_ERROR, |
| 1693 | _("malformed linespec error: unexpected %s, \"%s\""), |
| 1694 | token_type_strings[token.type], string.get ()); |
| 1695 | } |
| 1696 | else |
| 1697 | throw_error (GENERIC_ERROR, |
| 1698 | _("malformed linespec error: unexpected %s"), |
| 1699 | token_type_strings[token.type]); |
| 1700 | } |
| 1701 | |
| 1702 | /* Throw an undefined label error. */ |
| 1703 | |
| 1704 | static void ATTRIBUTE_NORETURN |
| 1705 | undefined_label_error (const char *function, const char *label) |
| 1706 | { |
| 1707 | if (function != NULL) |
| 1708 | throw_error (NOT_FOUND_ERROR, |
| 1709 | _("No label \"%s\" defined in function \"%s\"."), |
| 1710 | label, function); |
| 1711 | else |
| 1712 | throw_error (NOT_FOUND_ERROR, |
| 1713 | _("No label \"%s\" defined in current function."), |
| 1714 | label); |
| 1715 | } |
| 1716 | |
| 1717 | /* Throw a source file not found error. */ |
| 1718 | |
| 1719 | static void ATTRIBUTE_NORETURN |
| 1720 | source_file_not_found_error (const char *name) |
| 1721 | { |
| 1722 | throw_error (NOT_FOUND_ERROR, _("No source file named %s."), name); |
| 1723 | } |
| 1724 | |
| 1725 | /* Unless at EIO, save the current stream position as completion word |
| 1726 | point, and consume the next token. */ |
| 1727 | |
| 1728 | static linespec_token |
| 1729 | save_stream_and_consume_token (linespec_parser *parser) |
| 1730 | { |
| 1731 | if (linespec_lexer_peek_token (parser).type != LSTOKEN_EOI) |
| 1732 | parser->completion_word = PARSER_STREAM (parser); |
| 1733 | return linespec_lexer_consume_token (parser); |
| 1734 | } |
| 1735 | |
| 1736 | /* See description in linespec.h. */ |
| 1737 | |
| 1738 | struct line_offset |
| 1739 | linespec_parse_line_offset (const char *string) |
| 1740 | { |
| 1741 | const char *start = string; |
| 1742 | struct line_offset line_offset = {0, LINE_OFFSET_NONE}; |
| 1743 | |
| 1744 | if (*string == '+') |
| 1745 | { |
| 1746 | line_offset.sign = LINE_OFFSET_PLUS; |
| 1747 | ++string; |
| 1748 | } |
| 1749 | else if (*string == '-') |
| 1750 | { |
| 1751 | line_offset.sign = LINE_OFFSET_MINUS; |
| 1752 | ++string; |
| 1753 | } |
| 1754 | |
| 1755 | if (*string != '\0' && !isdigit (*string)) |
| 1756 | error (_("malformed line offset: \"%s\""), start); |
| 1757 | |
| 1758 | /* Right now, we only allow base 10 for offsets. */ |
| 1759 | line_offset.offset = atoi (string); |
| 1760 | return line_offset; |
| 1761 | } |
| 1762 | |
| 1763 | /* In completion mode, if the user is still typing the number, there's |
| 1764 | no possible completion to offer. But if there's already input past |
| 1765 | the number, setup to expect NEXT. */ |
| 1766 | |
| 1767 | static void |
| 1768 | set_completion_after_number (linespec_parser *parser, |
| 1769 | linespec_complete_what next) |
| 1770 | { |
| 1771 | if (*PARSER_STREAM (parser) == ' ') |
| 1772 | { |
| 1773 | parser->completion_word = skip_spaces (PARSER_STREAM (parser) + 1); |
| 1774 | parser->complete_what = next; |
| 1775 | } |
| 1776 | else |
| 1777 | { |
| 1778 | parser->completion_word = PARSER_STREAM (parser); |
| 1779 | parser->complete_what = linespec_complete_what::NOTHING; |
| 1780 | } |
| 1781 | } |
| 1782 | |
| 1783 | /* Parse the basic_spec in PARSER's input. */ |
| 1784 | |
| 1785 | static void |
| 1786 | linespec_parse_basic (linespec_parser *parser) |
| 1787 | { |
| 1788 | gdb::unique_xmalloc_ptr<char> name; |
| 1789 | linespec_token token; |
| 1790 | std::vector<block_symbol> symbols; |
| 1791 | std::vector<block_symbol> *labels; |
| 1792 | std::vector<bound_minimal_symbol> minimal_symbols; |
| 1793 | |
| 1794 | /* Get the next token. */ |
| 1795 | token = linespec_lexer_lex_one (parser); |
| 1796 | |
| 1797 | /* If it is EOI or KEYWORD, issue an error. */ |
| 1798 | if (token.type == LSTOKEN_KEYWORD) |
| 1799 | { |
| 1800 | parser->complete_what = linespec_complete_what::NOTHING; |
| 1801 | unexpected_linespec_error (parser); |
| 1802 | } |
| 1803 | else if (token.type == LSTOKEN_EOI) |
| 1804 | { |
| 1805 | unexpected_linespec_error (parser); |
| 1806 | } |
| 1807 | /* If it is a LSTOKEN_NUMBER, we have an offset. */ |
| 1808 | else if (token.type == LSTOKEN_NUMBER) |
| 1809 | { |
| 1810 | set_completion_after_number (parser, linespec_complete_what::KEYWORD); |
| 1811 | |
| 1812 | /* Record the line offset and get the next token. */ |
| 1813 | name = copy_token_string (token); |
| 1814 | PARSER_EXPLICIT (parser)->line_offset |
| 1815 | = linespec_parse_line_offset (name.get ()); |
| 1816 | |
| 1817 | /* Get the next token. */ |
| 1818 | token = linespec_lexer_consume_token (parser); |
| 1819 | |
| 1820 | /* If the next token is a comma, stop parsing and return. */ |
| 1821 | if (token.type == LSTOKEN_COMMA) |
| 1822 | { |
| 1823 | parser->complete_what = linespec_complete_what::NOTHING; |
| 1824 | return; |
| 1825 | } |
| 1826 | |
| 1827 | /* If the next token is anything but EOI or KEYWORD, issue |
| 1828 | an error. */ |
| 1829 | if (token.type != LSTOKEN_KEYWORD && token.type != LSTOKEN_EOI) |
| 1830 | unexpected_linespec_error (parser); |
| 1831 | } |
| 1832 | |
| 1833 | if (token.type == LSTOKEN_KEYWORD || token.type == LSTOKEN_EOI) |
| 1834 | return; |
| 1835 | |
| 1836 | /* Next token must be LSTOKEN_STRING. */ |
| 1837 | if (token.type != LSTOKEN_STRING) |
| 1838 | { |
| 1839 | parser->complete_what = linespec_complete_what::NOTHING; |
| 1840 | unexpected_linespec_error (parser); |
| 1841 | } |
| 1842 | |
| 1843 | /* The current token will contain the name of a function, method, |
| 1844 | or label. */ |
| 1845 | name = copy_token_string (token); |
| 1846 | |
| 1847 | if (parser->completion_tracker != NULL) |
| 1848 | { |
| 1849 | /* If the function name ends with a ":", then this may be an |
| 1850 | incomplete "::" scope operator instead of a label separator. |
| 1851 | E.g., |
| 1852 | "b klass:<tab>" |
| 1853 | which should expand to: |
| 1854 | "b klass::method()" |
| 1855 | |
| 1856 | Do a tentative completion assuming the later. If we find |
| 1857 | completions, advance the stream past the colon token and make |
| 1858 | it part of the function name/token. */ |
| 1859 | |
| 1860 | if (!parser->completion_quote_char |
| 1861 | && strcmp (PARSER_STREAM (parser), ":") == 0) |
| 1862 | { |
| 1863 | completion_tracker tmp_tracker; |
| 1864 | const char *source_filename |
| 1865 | = PARSER_EXPLICIT (parser)->source_filename; |
| 1866 | symbol_name_match_type match_type |
| 1867 | = PARSER_EXPLICIT (parser)->func_name_match_type; |
| 1868 | |
| 1869 | linespec_complete_function (tmp_tracker, |
| 1870 | parser->completion_word, |
| 1871 | match_type, |
| 1872 | source_filename); |
| 1873 | |
| 1874 | if (tmp_tracker.have_completions ()) |
| 1875 | { |
| 1876 | PARSER_STREAM (parser)++; |
| 1877 | LS_TOKEN_STOKEN (token).length++; |
| 1878 | |
| 1879 | name.reset (savestring (parser->completion_word, |
| 1880 | (PARSER_STREAM (parser) |
| 1881 | - parser->completion_word))); |
| 1882 | } |
| 1883 | } |
| 1884 | |
| 1885 | PARSER_EXPLICIT (parser)->function_name = name.release (); |
| 1886 | } |
| 1887 | else |
| 1888 | { |
| 1889 | /* Try looking it up as a function/method. */ |
| 1890 | find_linespec_symbols (PARSER_STATE (parser), |
| 1891 | PARSER_RESULT (parser)->file_symtabs, name.get (), |
| 1892 | PARSER_EXPLICIT (parser)->func_name_match_type, |
| 1893 | &symbols, &minimal_symbols); |
| 1894 | |
| 1895 | if (!symbols.empty () || !minimal_symbols.empty ()) |
| 1896 | { |
| 1897 | PARSER_RESULT (parser)->function_symbols |
| 1898 | = new std::vector<block_symbol> (std::move (symbols)); |
| 1899 | PARSER_RESULT (parser)->minimal_symbols |
| 1900 | = new std::vector<bound_minimal_symbol> |
| 1901 | (std::move (minimal_symbols)); |
| 1902 | PARSER_EXPLICIT (parser)->function_name = name.release (); |
| 1903 | } |
| 1904 | else |
| 1905 | { |
| 1906 | /* NAME was not a function or a method. So it must be a label |
| 1907 | name or user specified variable like "break foo.c:$zippo". */ |
| 1908 | labels = find_label_symbols (PARSER_STATE (parser), NULL, |
| 1909 | &symbols, name.get ()); |
| 1910 | if (labels != NULL) |
| 1911 | { |
| 1912 | PARSER_RESULT (parser)->labels.label_symbols = labels; |
| 1913 | PARSER_RESULT (parser)->labels.function_symbols |
| 1914 | = new std::vector<block_symbol> (std::move (symbols)); |
| 1915 | PARSER_EXPLICIT (parser)->label_name = name.release (); |
| 1916 | } |
| 1917 | else if (token.type == LSTOKEN_STRING |
| 1918 | && *LS_TOKEN_STOKEN (token).ptr == '$') |
| 1919 | { |
| 1920 | /* User specified a convenience variable or history value. */ |
| 1921 | PARSER_EXPLICIT (parser)->line_offset |
| 1922 | = linespec_parse_variable (PARSER_STATE (parser), name.get ()); |
| 1923 | |
| 1924 | if (PARSER_EXPLICIT (parser)->line_offset.sign == LINE_OFFSET_UNKNOWN) |
| 1925 | { |
| 1926 | /* The user-specified variable was not valid. Do not |
| 1927 | throw an error here. parse_linespec will do it for us. */ |
| 1928 | PARSER_EXPLICIT (parser)->function_name = name.release (); |
| 1929 | return; |
| 1930 | } |
| 1931 | } |
| 1932 | else |
| 1933 | { |
| 1934 | /* The name is also not a label. Abort parsing. Do not throw |
| 1935 | an error here. parse_linespec will do it for us. */ |
| 1936 | |
| 1937 | /* Save a copy of the name we were trying to lookup. */ |
| 1938 | PARSER_EXPLICIT (parser)->function_name = name.release (); |
| 1939 | return; |
| 1940 | } |
| 1941 | } |
| 1942 | } |
| 1943 | |
| 1944 | int previous_qc = parser->completion_quote_char; |
| 1945 | |
| 1946 | /* Get the next token. */ |
| 1947 | token = linespec_lexer_consume_token (parser); |
| 1948 | |
| 1949 | if (token.type == LSTOKEN_EOI) |
| 1950 | { |
| 1951 | if (previous_qc && !parser->completion_quote_char) |
| 1952 | parser->complete_what = linespec_complete_what::KEYWORD; |
| 1953 | } |
| 1954 | else if (token.type == LSTOKEN_COLON) |
| 1955 | { |
| 1956 | /* User specified a label or a lineno. */ |
| 1957 | token = linespec_lexer_consume_token (parser); |
| 1958 | |
| 1959 | if (token.type == LSTOKEN_NUMBER) |
| 1960 | { |
| 1961 | /* User specified an offset. Record the line offset and |
| 1962 | get the next token. */ |
| 1963 | set_completion_after_number (parser, linespec_complete_what::KEYWORD); |
| 1964 | |
| 1965 | name = copy_token_string (token); |
| 1966 | PARSER_EXPLICIT (parser)->line_offset |
| 1967 | = linespec_parse_line_offset (name.get ()); |
| 1968 | |
| 1969 | /* Get the next token. */ |
| 1970 | token = linespec_lexer_consume_token (parser); |
| 1971 | } |
| 1972 | else if (token.type == LSTOKEN_EOI && parser->completion_tracker != NULL) |
| 1973 | { |
| 1974 | parser->complete_what = linespec_complete_what::LABEL; |
| 1975 | } |
| 1976 | else if (token.type == LSTOKEN_STRING) |
| 1977 | { |
| 1978 | parser->complete_what = linespec_complete_what::LABEL; |
| 1979 | |
| 1980 | /* If we have text after the label separated by whitespace |
| 1981 | (e.g., "b func():lab i<tab>"), don't consider it part of |
| 1982 | the label. In completion mode that should complete to |
| 1983 | "if", in normal mode, the 'i' should be treated as |
| 1984 | garbage. */ |
| 1985 | if (parser->completion_quote_char == '\0') |
| 1986 | { |
| 1987 | const char *ptr = LS_TOKEN_STOKEN (token).ptr; |
| 1988 | for (size_t i = 0; i < LS_TOKEN_STOKEN (token).length; i++) |
| 1989 | { |
| 1990 | if (ptr[i] == ' ') |
| 1991 | { |
| 1992 | LS_TOKEN_STOKEN (token).length = i; |
| 1993 | PARSER_STREAM (parser) = skip_spaces (ptr + i + 1); |
| 1994 | break; |
| 1995 | } |
| 1996 | } |
| 1997 | } |
| 1998 | |
| 1999 | if (parser->completion_tracker != NULL) |
| 2000 | { |
| 2001 | if (PARSER_STREAM (parser)[-1] == ' ') |
| 2002 | { |
| 2003 | parser->completion_word = PARSER_STREAM (parser); |
| 2004 | parser->complete_what = linespec_complete_what::KEYWORD; |
| 2005 | } |
| 2006 | } |
| 2007 | else |
| 2008 | { |
| 2009 | /* Grab a copy of the label's name and look it up. */ |
| 2010 | name = copy_token_string (token); |
| 2011 | labels |
| 2012 | = find_label_symbols (PARSER_STATE (parser), |
| 2013 | PARSER_RESULT (parser)->function_symbols, |
| 2014 | &symbols, name.get ()); |
| 2015 | |
| 2016 | if (labels != NULL) |
| 2017 | { |
| 2018 | PARSER_RESULT (parser)->labels.label_symbols = labels; |
| 2019 | PARSER_RESULT (parser)->labels.function_symbols |
| 2020 | = new std::vector<block_symbol> (std::move (symbols)); |
| 2021 | PARSER_EXPLICIT (parser)->label_name = name.release (); |
| 2022 | } |
| 2023 | else |
| 2024 | { |
| 2025 | /* We don't know what it was, but it isn't a label. */ |
| 2026 | undefined_label_error |
| 2027 | (PARSER_EXPLICIT (parser)->function_name, name.get ()); |
| 2028 | } |
| 2029 | |
| 2030 | } |
| 2031 | |
| 2032 | /* Check for a line offset. */ |
| 2033 | token = save_stream_and_consume_token (parser); |
| 2034 | if (token.type == LSTOKEN_COLON) |
| 2035 | { |
| 2036 | /* Get the next token. */ |
| 2037 | token = linespec_lexer_consume_token (parser); |
| 2038 | |
| 2039 | /* It must be a line offset. */ |
| 2040 | if (token.type != LSTOKEN_NUMBER) |
| 2041 | unexpected_linespec_error (parser); |
| 2042 | |
| 2043 | /* Record the line offset and get the next token. */ |
| 2044 | name = copy_token_string (token); |
| 2045 | |
| 2046 | PARSER_EXPLICIT (parser)->line_offset |
| 2047 | = linespec_parse_line_offset (name.get ()); |
| 2048 | |
| 2049 | /* Get the next token. */ |
| 2050 | token = linespec_lexer_consume_token (parser); |
| 2051 | } |
| 2052 | } |
| 2053 | else |
| 2054 | { |
| 2055 | /* Trailing ':' in the input. Issue an error. */ |
| 2056 | unexpected_linespec_error (parser); |
| 2057 | } |
| 2058 | } |
| 2059 | } |
| 2060 | |
| 2061 | /* Canonicalize the linespec contained in LS. The result is saved into |
| 2062 | STATE->canonical. This function handles both linespec and explicit |
| 2063 | locations. */ |
| 2064 | |
| 2065 | static void |
| 2066 | canonicalize_linespec (struct linespec_state *state, const linespec_p ls) |
| 2067 | { |
| 2068 | struct event_location *canon; |
| 2069 | struct explicit_location *explicit_loc; |
| 2070 | |
| 2071 | /* If canonicalization was not requested, no need to do anything. */ |
| 2072 | if (!state->canonical) |
| 2073 | return; |
| 2074 | |
| 2075 | /* Save everything as an explicit location. */ |
| 2076 | state->canonical->location |
| 2077 | = new_explicit_location (&ls->explicit_loc); |
| 2078 | canon = state->canonical->location.get (); |
| 2079 | explicit_loc = get_explicit_location (canon); |
| 2080 | |
| 2081 | if (explicit_loc->label_name != NULL) |
| 2082 | { |
| 2083 | state->canonical->special_display = 1; |
| 2084 | |
| 2085 | if (explicit_loc->function_name == NULL) |
| 2086 | { |
| 2087 | /* No function was specified, so add the symbol name. */ |
| 2088 | gdb_assert (!ls->labels.function_symbols->empty () |
| 2089 | && (ls->labels.function_symbols->size () == 1)); |
| 2090 | block_symbol s = ls->labels.function_symbols->front (); |
| 2091 | explicit_loc->function_name = xstrdup (s.symbol->natural_name ()); |
| 2092 | } |
| 2093 | } |
| 2094 | |
| 2095 | /* If this location originally came from a linespec, save a string |
| 2096 | representation of it for display and saving to file. */ |
| 2097 | if (state->is_linespec) |
| 2098 | { |
| 2099 | char *linespec = explicit_location_to_linespec (explicit_loc); |
| 2100 | |
| 2101 | set_event_location_string (canon, linespec); |
| 2102 | xfree (linespec); |
| 2103 | } |
| 2104 | } |
| 2105 | |
| 2106 | /* Given a line offset in LS, construct the relevant SALs. */ |
| 2107 | |
| 2108 | static std::vector<symtab_and_line> |
| 2109 | create_sals_line_offset (struct linespec_state *self, |
| 2110 | linespec_p ls) |
| 2111 | { |
| 2112 | int use_default = 0; |
| 2113 | |
| 2114 | /* This is where we need to make sure we have good defaults. |
| 2115 | We must guarantee that this section of code is never executed |
| 2116 | when we are called with just a function name, since |
| 2117 | set_default_source_symtab_and_line uses |
| 2118 | select_source_symtab that calls us with such an argument. */ |
| 2119 | |
| 2120 | if (ls->file_symtabs->size () == 1 |
| 2121 | && ls->file_symtabs->front () == nullptr) |
| 2122 | { |
| 2123 | set_current_program_space (self->program_space); |
| 2124 | |
| 2125 | /* Make sure we have at least a default source line. */ |
| 2126 | set_default_source_symtab_and_line (); |
| 2127 | initialize_defaults (&self->default_symtab, &self->default_line); |
| 2128 | *ls->file_symtabs |
| 2129 | = collect_symtabs_from_filename (self->default_symtab->filename, |
| 2130 | self->search_pspace); |
| 2131 | use_default = 1; |
| 2132 | } |
| 2133 | |
| 2134 | symtab_and_line val; |
| 2135 | val.line = ls->explicit_loc.line_offset.offset; |
| 2136 | switch (ls->explicit_loc.line_offset.sign) |
| 2137 | { |
| 2138 | case LINE_OFFSET_PLUS: |
| 2139 | if (ls->explicit_loc.line_offset.offset == 0) |
| 2140 | val.line = 5; |
| 2141 | if (use_default) |
| 2142 | val.line = self->default_line + val.line; |
| 2143 | break; |
| 2144 | |
| 2145 | case LINE_OFFSET_MINUS: |
| 2146 | if (ls->explicit_loc.line_offset.offset == 0) |
| 2147 | val.line = 15; |
| 2148 | if (use_default) |
| 2149 | val.line = self->default_line - val.line; |
| 2150 | else |
| 2151 | val.line = -val.line; |
| 2152 | break; |
| 2153 | |
| 2154 | case LINE_OFFSET_NONE: |
| 2155 | break; /* No need to adjust val.line. */ |
| 2156 | } |
| 2157 | |
| 2158 | std::vector<symtab_and_line> values; |
| 2159 | if (self->list_mode) |
| 2160 | values = decode_digits_list_mode (self, ls, val); |
| 2161 | else |
| 2162 | { |
| 2163 | struct linetable_entry *best_entry = NULL; |
| 2164 | int i, j; |
| 2165 | |
| 2166 | std::vector<symtab_and_line> intermediate_results |
| 2167 | = decode_digits_ordinary (self, ls, val.line, &best_entry); |
| 2168 | if (intermediate_results.empty () && best_entry != NULL) |
| 2169 | intermediate_results = decode_digits_ordinary (self, ls, |
| 2170 | best_entry->line, |
| 2171 | &best_entry); |
| 2172 | |
| 2173 | /* For optimized code, the compiler can scatter one source line |
| 2174 | across disjoint ranges of PC values, even when no duplicate |
| 2175 | functions or inline functions are involved. For example, |
| 2176 | 'for (;;)' inside a non-template, non-inline, and non-ctor-or-dtor |
| 2177 | function can result in two PC ranges. In this case, we don't |
| 2178 | want to set a breakpoint on the first PC of each range. To filter |
| 2179 | such cases, we use containing blocks -- for each PC found |
| 2180 | above, we see if there are other PCs that are in the same |
| 2181 | block. If yes, the other PCs are filtered out. */ |
| 2182 | |
| 2183 | gdb::def_vector<int> filter (intermediate_results.size ()); |
| 2184 | gdb::def_vector<const block *> blocks (intermediate_results.size ()); |
| 2185 | |
| 2186 | for (i = 0; i < intermediate_results.size (); ++i) |
| 2187 | { |
| 2188 | set_current_program_space (intermediate_results[i].pspace); |
| 2189 | |
| 2190 | filter[i] = 1; |
| 2191 | blocks[i] = block_for_pc_sect (intermediate_results[i].pc, |
| 2192 | intermediate_results[i].section); |
| 2193 | } |
| 2194 | |
| 2195 | for (i = 0; i < intermediate_results.size (); ++i) |
| 2196 | { |
| 2197 | if (blocks[i] != NULL) |
| 2198 | for (j = i + 1; j < intermediate_results.size (); ++j) |
| 2199 | { |
| 2200 | if (blocks[j] == blocks[i]) |
| 2201 | { |
| 2202 | filter[j] = 0; |
| 2203 | break; |
| 2204 | } |
| 2205 | } |
| 2206 | } |
| 2207 | |
| 2208 | for (i = 0; i < intermediate_results.size (); ++i) |
| 2209 | if (filter[i]) |
| 2210 | { |
| 2211 | struct symbol *sym = (blocks[i] |
| 2212 | ? block_containing_function (blocks[i]) |
| 2213 | : NULL); |
| 2214 | |
| 2215 | if (self->funfirstline) |
| 2216 | skip_prologue_sal (&intermediate_results[i]); |
| 2217 | intermediate_results[i].symbol = sym; |
| 2218 | add_sal_to_sals (self, &values, &intermediate_results[i], |
| 2219 | sym ? sym->natural_name () : NULL, 0); |
| 2220 | } |
| 2221 | } |
| 2222 | |
| 2223 | if (values.empty ()) |
| 2224 | { |
| 2225 | if (ls->explicit_loc.source_filename) |
| 2226 | throw_error (NOT_FOUND_ERROR, _("No line %d in file \"%s\"."), |
| 2227 | val.line, ls->explicit_loc.source_filename); |
| 2228 | else |
| 2229 | throw_error (NOT_FOUND_ERROR, _("No line %d in the current file."), |
| 2230 | val.line); |
| 2231 | } |
| 2232 | |
| 2233 | return values; |
| 2234 | } |
| 2235 | |
| 2236 | /* Convert the given ADDRESS into SaLs. */ |
| 2237 | |
| 2238 | static std::vector<symtab_and_line> |
| 2239 | convert_address_location_to_sals (struct linespec_state *self, |
| 2240 | CORE_ADDR address) |
| 2241 | { |
| 2242 | symtab_and_line sal = find_pc_line (address, 0); |
| 2243 | sal.pc = address; |
| 2244 | sal.section = find_pc_overlay (address); |
| 2245 | sal.explicit_pc = 1; |
| 2246 | sal.symbol = find_pc_sect_containing_function (sal.pc, sal.section); |
| 2247 | |
| 2248 | std::vector<symtab_and_line> sals; |
| 2249 | add_sal_to_sals (self, &sals, &sal, core_addr_to_string (address), 1); |
| 2250 | |
| 2251 | return sals; |
| 2252 | } |
| 2253 | |
| 2254 | /* Create and return SALs from the linespec LS. */ |
| 2255 | |
| 2256 | static std::vector<symtab_and_line> |
| 2257 | convert_linespec_to_sals (struct linespec_state *state, linespec_p ls) |
| 2258 | { |
| 2259 | std::vector<symtab_and_line> sals; |
| 2260 | |
| 2261 | if (ls->labels.label_symbols != NULL) |
| 2262 | { |
| 2263 | /* We have just a bunch of functions/methods or labels. */ |
| 2264 | struct symtab_and_line sal; |
| 2265 | |
| 2266 | for (const auto &sym : *ls->labels.label_symbols) |
| 2267 | { |
| 2268 | struct program_space *pspace |
| 2269 | = SYMTAB_PSPACE (symbol_symtab (sym.symbol)); |
| 2270 | |
| 2271 | if (symbol_to_sal (&sal, state->funfirstline, sym.symbol) |
| 2272 | && maybe_add_address (state->addr_set, pspace, sal.pc)) |
| 2273 | add_sal_to_sals (state, &sals, &sal, |
| 2274 | sym.symbol->natural_name (), 0); |
| 2275 | } |
| 2276 | } |
| 2277 | else if (ls->function_symbols != NULL || ls->minimal_symbols != NULL) |
| 2278 | { |
| 2279 | /* We have just a bunch of functions and/or methods. */ |
| 2280 | if (ls->function_symbols != NULL) |
| 2281 | { |
| 2282 | /* Sort symbols so that symbols with the same program space are next |
| 2283 | to each other. */ |
| 2284 | std::sort (ls->function_symbols->begin (), |
| 2285 | ls->function_symbols->end (), |
| 2286 | compare_symbols); |
| 2287 | |
| 2288 | for (const auto &sym : *ls->function_symbols) |
| 2289 | { |
| 2290 | program_space *pspace |
| 2291 | = SYMTAB_PSPACE (symbol_symtab (sym.symbol)); |
| 2292 | set_current_program_space (pspace); |
| 2293 | |
| 2294 | /* Don't skip to the first line of the function if we |
| 2295 | had found an ifunc minimal symbol for this function, |
| 2296 | because that means that this function is an ifunc |
| 2297 | resolver with the same name as the ifunc itself. */ |
| 2298 | bool found_ifunc = false; |
| 2299 | |
| 2300 | if (state->funfirstline |
| 2301 | && ls->minimal_symbols != NULL |
| 2302 | && SYMBOL_CLASS (sym.symbol) == LOC_BLOCK) |
| 2303 | { |
| 2304 | const CORE_ADDR addr |
| 2305 | = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym.symbol)); |
| 2306 | |
| 2307 | for (const auto &elem : *ls->minimal_symbols) |
| 2308 | { |
| 2309 | if (MSYMBOL_TYPE (elem.minsym) == mst_text_gnu_ifunc |
| 2310 | || MSYMBOL_TYPE (elem.minsym) == mst_data_gnu_ifunc) |
| 2311 | { |
| 2312 | CORE_ADDR msym_addr = BMSYMBOL_VALUE_ADDRESS (elem); |
| 2313 | if (MSYMBOL_TYPE (elem.minsym) == mst_data_gnu_ifunc) |
| 2314 | { |
| 2315 | struct gdbarch *gdbarch |
| 2316 | = elem.objfile->arch (); |
| 2317 | msym_addr |
| 2318 | = (gdbarch_convert_from_func_ptr_addr |
| 2319 | (gdbarch, |
| 2320 | msym_addr, |
| 2321 | current_top_target ())); |
| 2322 | } |
| 2323 | |
| 2324 | if (msym_addr == addr) |
| 2325 | { |
| 2326 | found_ifunc = true; |
| 2327 | break; |
| 2328 | } |
| 2329 | } |
| 2330 | } |
| 2331 | } |
| 2332 | |
| 2333 | if (!found_ifunc) |
| 2334 | { |
| 2335 | symtab_and_line sal; |
| 2336 | if (symbol_to_sal (&sal, state->funfirstline, sym.symbol) |
| 2337 | && maybe_add_address (state->addr_set, pspace, sal.pc)) |
| 2338 | add_sal_to_sals (state, &sals, &sal, |
| 2339 | sym.symbol->natural_name (), 0); |
| 2340 | } |
| 2341 | } |
| 2342 | } |
| 2343 | |
| 2344 | if (ls->minimal_symbols != NULL) |
| 2345 | { |
| 2346 | /* Sort minimal symbols by program space, too */ |
| 2347 | std::sort (ls->minimal_symbols->begin (), |
| 2348 | ls->minimal_symbols->end (), |
| 2349 | compare_msymbols); |
| 2350 | |
| 2351 | for (const auto &elem : *ls->minimal_symbols) |
| 2352 | { |
| 2353 | program_space *pspace = elem.objfile->pspace; |
| 2354 | set_current_program_space (pspace); |
| 2355 | minsym_found (state, elem.objfile, elem.minsym, &sals); |
| 2356 | } |
| 2357 | } |
| 2358 | } |
| 2359 | else if (ls->explicit_loc.line_offset.sign != LINE_OFFSET_UNKNOWN) |
| 2360 | { |
| 2361 | /* Only an offset was specified. */ |
| 2362 | sals = create_sals_line_offset (state, ls); |
| 2363 | |
| 2364 | /* Make sure we have a filename for canonicalization. */ |
| 2365 | if (ls->explicit_loc.source_filename == NULL) |
| 2366 | { |
| 2367 | const char *fullname = symtab_to_fullname (state->default_symtab); |
| 2368 | |
| 2369 | /* It may be more appropriate to keep DEFAULT_SYMTAB in its symtab |
| 2370 | form so that displaying SOURCE_FILENAME can follow the current |
| 2371 | FILENAME_DISPLAY_STRING setting. But as it is used only rarely |
| 2372 | it has been kept for code simplicity only in absolute form. */ |
| 2373 | ls->explicit_loc.source_filename = xstrdup (fullname); |
| 2374 | } |
| 2375 | } |
| 2376 | else |
| 2377 | { |
| 2378 | /* We haven't found any results... */ |
| 2379 | return sals; |
| 2380 | } |
| 2381 | |
| 2382 | canonicalize_linespec (state, ls); |
| 2383 | |
| 2384 | if (!sals.empty () && state->canonical != NULL) |
| 2385 | state->canonical->pre_expanded = 1; |
| 2386 | |
| 2387 | return sals; |
| 2388 | } |
| 2389 | |
| 2390 | /* Build RESULT from the explicit location components SOURCE_FILENAME, |
| 2391 | FUNCTION_NAME, LABEL_NAME and LINE_OFFSET. */ |
| 2392 | |
| 2393 | static void |
| 2394 | convert_explicit_location_to_linespec (struct linespec_state *self, |
| 2395 | linespec_p result, |
| 2396 | const char *source_filename, |
| 2397 | const char *function_name, |
| 2398 | symbol_name_match_type fname_match_type, |
| 2399 | const char *label_name, |
| 2400 | struct line_offset line_offset) |
| 2401 | { |
| 2402 | std::vector<block_symbol> symbols; |
| 2403 | std::vector<block_symbol> *labels; |
| 2404 | std::vector<bound_minimal_symbol> minimal_symbols; |
| 2405 | |
| 2406 | result->explicit_loc.func_name_match_type = fname_match_type; |
| 2407 | |
| 2408 | if (source_filename != NULL) |
| 2409 | { |
| 2410 | try |
| 2411 | { |
| 2412 | *result->file_symtabs |
| 2413 | = symtabs_from_filename (source_filename, self->search_pspace); |
| 2414 | } |
| 2415 | catch (const gdb_exception_error &except) |
| 2416 | { |
| 2417 | source_file_not_found_error (source_filename); |
| 2418 | } |
| 2419 | result->explicit_loc.source_filename = xstrdup (source_filename); |
| 2420 | } |
| 2421 | else |
| 2422 | { |
| 2423 | /* A NULL entry means to use the default symtab. */ |
| 2424 | result->file_symtabs->push_back (nullptr); |
| 2425 | } |
| 2426 | |
| 2427 | if (function_name != NULL) |
| 2428 | { |
| 2429 | find_linespec_symbols (self, result->file_symtabs, |
| 2430 | function_name, fname_match_type, |
| 2431 | &symbols, &minimal_symbols); |
| 2432 | |
| 2433 | if (symbols.empty () && minimal_symbols.empty ()) |
| 2434 | symbol_not_found_error (function_name, |
| 2435 | result->explicit_loc.source_filename); |
| 2436 | |
| 2437 | result->explicit_loc.function_name = xstrdup (function_name); |
| 2438 | result->function_symbols |
| 2439 | = new std::vector<block_symbol> (std::move (symbols)); |
| 2440 | result->minimal_symbols |
| 2441 | = new std::vector<bound_minimal_symbol> (std::move (minimal_symbols)); |
| 2442 | } |
| 2443 | |
| 2444 | if (label_name != NULL) |
| 2445 | { |
| 2446 | labels = find_label_symbols (self, result->function_symbols, |
| 2447 | &symbols, label_name); |
| 2448 | |
| 2449 | if (labels == NULL) |
| 2450 | undefined_label_error (result->explicit_loc.function_name, |
| 2451 | label_name); |
| 2452 | |
| 2453 | result->explicit_loc.label_name = xstrdup (label_name); |
| 2454 | result->labels.label_symbols = labels; |
| 2455 | result->labels.function_symbols |
| 2456 | = new std::vector<block_symbol> (std::move (symbols)); |
| 2457 | } |
| 2458 | |
| 2459 | if (line_offset.sign != LINE_OFFSET_UNKNOWN) |
| 2460 | result->explicit_loc.line_offset = line_offset; |
| 2461 | } |
| 2462 | |
| 2463 | /* Convert the explicit location EXPLICIT_LOC into SaLs. */ |
| 2464 | |
| 2465 | static std::vector<symtab_and_line> |
| 2466 | convert_explicit_location_to_sals (struct linespec_state *self, |
| 2467 | linespec_p result, |
| 2468 | const struct explicit_location *explicit_loc) |
| 2469 | { |
| 2470 | convert_explicit_location_to_linespec (self, result, |
| 2471 | explicit_loc->source_filename, |
| 2472 | explicit_loc->function_name, |
| 2473 | explicit_loc->func_name_match_type, |
| 2474 | explicit_loc->label_name, |
| 2475 | explicit_loc->line_offset); |
| 2476 | return convert_linespec_to_sals (self, result); |
| 2477 | } |
| 2478 | |
| 2479 | /* Parse a string that specifies a linespec. |
| 2480 | |
| 2481 | The basic grammar of linespecs: |
| 2482 | |
| 2483 | linespec -> var_spec | basic_spec |
| 2484 | var_spec -> '$' (STRING | NUMBER) |
| 2485 | |
| 2486 | basic_spec -> file_offset_spec | function_spec | label_spec |
| 2487 | file_offset_spec -> opt_file_spec offset_spec |
| 2488 | function_spec -> opt_file_spec function_name_spec opt_label_spec |
| 2489 | label_spec -> label_name_spec |
| 2490 | |
| 2491 | opt_file_spec -> "" | file_name_spec ':' |
| 2492 | opt_label_spec -> "" | ':' label_name_spec |
| 2493 | |
| 2494 | file_name_spec -> STRING |
| 2495 | function_name_spec -> STRING |
| 2496 | label_name_spec -> STRING |
| 2497 | function_name_spec -> STRING |
| 2498 | offset_spec -> NUMBER |
| 2499 | -> '+' NUMBER |
| 2500 | -> '-' NUMBER |
| 2501 | |
| 2502 | This may all be followed by several keywords such as "if EXPR", |
| 2503 | which we ignore. |
| 2504 | |
| 2505 | A comma will terminate parsing. |
| 2506 | |
| 2507 | The function may be an undebuggable function found in minimal symbol table. |
| 2508 | |
| 2509 | If the argument FUNFIRSTLINE is nonzero, we want the first line |
| 2510 | of real code inside a function when a function is specified, and it is |
| 2511 | not OK to specify a variable or type to get its line number. |
| 2512 | |
| 2513 | DEFAULT_SYMTAB specifies the file to use if none is specified. |
| 2514 | It defaults to current_source_symtab. |
| 2515 | DEFAULT_LINE specifies the line number to use for relative |
| 2516 | line numbers (that start with signs). Defaults to current_source_line. |
| 2517 | If CANONICAL is non-NULL, store an array of strings containing the canonical |
| 2518 | line specs there if necessary. Currently overloaded member functions and |
| 2519 | line numbers or static functions without a filename yield a canonical |
| 2520 | line spec. The array and the line spec strings are allocated on the heap, |
| 2521 | it is the callers responsibility to free them. |
| 2522 | |
| 2523 | Note that it is possible to return zero for the symtab |
| 2524 | if no file is validly specified. Callers must check that. |
| 2525 | Also, the line number returned may be invalid. */ |
| 2526 | |
| 2527 | /* Parse the linespec in ARG. MATCH_TYPE indicates how function names |
| 2528 | should be matched. */ |
| 2529 | |
| 2530 | static std::vector<symtab_and_line> |
| 2531 | parse_linespec (linespec_parser *parser, const char *arg, |
| 2532 | symbol_name_match_type match_type) |
| 2533 | { |
| 2534 | linespec_token token; |
| 2535 | struct gdb_exception file_exception; |
| 2536 | |
| 2537 | /* A special case to start. It has become quite popular for |
| 2538 | IDEs to work around bugs in the previous parser by quoting |
| 2539 | the entire linespec, so we attempt to deal with this nicely. */ |
| 2540 | parser->is_quote_enclosed = 0; |
| 2541 | if (parser->completion_tracker == NULL |
| 2542 | && !is_ada_operator (arg) |
| 2543 | && strchr (linespec_quote_characters, *arg) != NULL) |
| 2544 | { |
| 2545 | const char *end; |
| 2546 | |
| 2547 | end = skip_quote_char (arg + 1, *arg); |
| 2548 | if (end != NULL && is_closing_quote_enclosed (end)) |
| 2549 | { |
| 2550 | /* Here's the special case. Skip ARG past the initial |
| 2551 | quote. */ |
| 2552 | ++arg; |
| 2553 | parser->is_quote_enclosed = 1; |
| 2554 | } |
| 2555 | } |
| 2556 | |
| 2557 | parser->lexer.saved_arg = arg; |
| 2558 | parser->lexer.stream = arg; |
| 2559 | parser->completion_word = arg; |
| 2560 | parser->complete_what = linespec_complete_what::FUNCTION; |
| 2561 | PARSER_EXPLICIT (parser)->func_name_match_type = match_type; |
| 2562 | |
| 2563 | /* Initialize the default symtab and line offset. */ |
| 2564 | initialize_defaults (&PARSER_STATE (parser)->default_symtab, |
| 2565 | &PARSER_STATE (parser)->default_line); |
| 2566 | |
| 2567 | /* Objective-C shortcut. */ |
| 2568 | if (parser->completion_tracker == NULL) |
| 2569 | { |
| 2570 | std::vector<symtab_and_line> values |
| 2571 | = decode_objc (PARSER_STATE (parser), PARSER_RESULT (parser), arg); |
| 2572 | if (!values.empty ()) |
| 2573 | return values; |
| 2574 | } |
| 2575 | else |
| 2576 | { |
| 2577 | /* "-"/"+" is either an objc selector, or a number. There's |
| 2578 | nothing to complete the latter to, so just let the caller |
| 2579 | complete on functions, which finds objc selectors, if there's |
| 2580 | any. */ |
| 2581 | if ((arg[0] == '-' || arg[0] == '+') && arg[1] == '\0') |
| 2582 | return {}; |
| 2583 | } |
| 2584 | |
| 2585 | /* Start parsing. */ |
| 2586 | |
| 2587 | /* Get the first token. */ |
| 2588 | token = linespec_lexer_consume_token (parser); |
| 2589 | |
| 2590 | /* It must be either LSTOKEN_STRING or LSTOKEN_NUMBER. */ |
| 2591 | if (token.type == LSTOKEN_STRING && *LS_TOKEN_STOKEN (token).ptr == '$') |
| 2592 | { |
| 2593 | /* A NULL entry means to use GLOBAL_DEFAULT_SYMTAB. */ |
| 2594 | if (parser->completion_tracker == NULL) |
| 2595 | PARSER_RESULT (parser)->file_symtabs->push_back (nullptr); |
| 2596 | |
| 2597 | /* User specified a convenience variable or history value. */ |
| 2598 | gdb::unique_xmalloc_ptr<char> var = copy_token_string (token); |
| 2599 | PARSER_EXPLICIT (parser)->line_offset |
| 2600 | = linespec_parse_variable (PARSER_STATE (parser), var.get ()); |
| 2601 | |
| 2602 | /* If a line_offset wasn't found (VAR is the name of a user |
| 2603 | variable/function), then skip to normal symbol processing. */ |
| 2604 | if (PARSER_EXPLICIT (parser)->line_offset.sign != LINE_OFFSET_UNKNOWN) |
| 2605 | { |
| 2606 | /* Consume this token. */ |
| 2607 | linespec_lexer_consume_token (parser); |
| 2608 | |
| 2609 | goto convert_to_sals; |
| 2610 | } |
| 2611 | } |
| 2612 | else if (token.type == LSTOKEN_EOI && parser->completion_tracker != NULL) |
| 2613 | { |
| 2614 | /* Let the default linespec_complete_what::FUNCTION kick in. */ |
| 2615 | unexpected_linespec_error (parser); |
| 2616 | } |
| 2617 | else if (token.type != LSTOKEN_STRING && token.type != LSTOKEN_NUMBER) |
| 2618 | { |
| 2619 | parser->complete_what = linespec_complete_what::NOTHING; |
| 2620 | unexpected_linespec_error (parser); |
| 2621 | } |
| 2622 | |
| 2623 | /* Shortcut: If the next token is not LSTOKEN_COLON, we know that |
| 2624 | this token cannot represent a filename. */ |
| 2625 | token = linespec_lexer_peek_token (parser); |
| 2626 | |
| 2627 | if (token.type == LSTOKEN_COLON) |
| 2628 | { |
| 2629 | /* Get the current token again and extract the filename. */ |
| 2630 | token = linespec_lexer_lex_one (parser); |
| 2631 | gdb::unique_xmalloc_ptr<char> user_filename = copy_token_string (token); |
| 2632 | |
| 2633 | /* Check if the input is a filename. */ |
| 2634 | try |
| 2635 | { |
| 2636 | *PARSER_RESULT (parser)->file_symtabs |
| 2637 | = symtabs_from_filename (user_filename.get (), |
| 2638 | PARSER_STATE (parser)->search_pspace); |
| 2639 | } |
| 2640 | catch (gdb_exception_error &ex) |
| 2641 | { |
| 2642 | file_exception = std::move (ex); |
| 2643 | } |
| 2644 | |
| 2645 | if (file_exception.reason >= 0) |
| 2646 | { |
| 2647 | /* Symtabs were found for the file. Record the filename. */ |
| 2648 | PARSER_EXPLICIT (parser)->source_filename = user_filename.release (); |
| 2649 | |
| 2650 | /* Get the next token. */ |
| 2651 | token = linespec_lexer_consume_token (parser); |
| 2652 | |
| 2653 | /* This is LSTOKEN_COLON; consume it. */ |
| 2654 | linespec_lexer_consume_token (parser); |
| 2655 | } |
| 2656 | else |
| 2657 | { |
| 2658 | /* A NULL entry means to use GLOBAL_DEFAULT_SYMTAB. */ |
| 2659 | PARSER_RESULT (parser)->file_symtabs->push_back (nullptr); |
| 2660 | } |
| 2661 | } |
| 2662 | /* If the next token is not EOI, KEYWORD, or COMMA, issue an error. */ |
| 2663 | else if (parser->completion_tracker == NULL |
| 2664 | && (token.type != LSTOKEN_EOI && token.type != LSTOKEN_KEYWORD |
| 2665 | && token.type != LSTOKEN_COMMA)) |
| 2666 | { |
| 2667 | /* TOKEN is the _next_ token, not the one currently in the parser. |
| 2668 | Consuming the token will give the correct error message. */ |
| 2669 | linespec_lexer_consume_token (parser); |
| 2670 | unexpected_linespec_error (parser); |
| 2671 | } |
| 2672 | else |
| 2673 | { |
| 2674 | /* A NULL entry means to use GLOBAL_DEFAULT_SYMTAB. */ |
| 2675 | PARSER_RESULT (parser)->file_symtabs->push_back (nullptr); |
| 2676 | } |
| 2677 | |
| 2678 | /* Parse the rest of the linespec. */ |
| 2679 | linespec_parse_basic (parser); |
| 2680 | |
| 2681 | if (parser->completion_tracker == NULL |
| 2682 | && PARSER_RESULT (parser)->function_symbols == NULL |
| 2683 | && PARSER_RESULT (parser)->labels.label_symbols == NULL |
| 2684 | && PARSER_EXPLICIT (parser)->line_offset.sign == LINE_OFFSET_UNKNOWN |
| 2685 | && PARSER_RESULT (parser)->minimal_symbols == NULL) |
| 2686 | { |
| 2687 | /* The linespec didn't parse. Re-throw the file exception if |
| 2688 | there was one. */ |
| 2689 | if (file_exception.reason < 0) |
| 2690 | throw_exception (std::move (file_exception)); |
| 2691 | |
| 2692 | /* Otherwise, the symbol is not found. */ |
| 2693 | symbol_not_found_error (PARSER_EXPLICIT (parser)->function_name, |
| 2694 | PARSER_EXPLICIT (parser)->source_filename); |
| 2695 | } |
| 2696 | |
| 2697 | convert_to_sals: |
| 2698 | |
| 2699 | /* Get the last token and record how much of the input was parsed, |
| 2700 | if necessary. */ |
| 2701 | token = linespec_lexer_lex_one (parser); |
| 2702 | if (token.type != LSTOKEN_EOI && token.type != LSTOKEN_KEYWORD) |
| 2703 | unexpected_linespec_error (parser); |
| 2704 | else if (token.type == LSTOKEN_KEYWORD) |
| 2705 | { |
| 2706 | /* Setup the completion word past the keyword. Lexing never |
| 2707 | advances past a keyword automatically, so skip it |
| 2708 | manually. */ |
| 2709 | parser->completion_word |
| 2710 | = skip_spaces (skip_to_space (PARSER_STREAM (parser))); |
| 2711 | parser->complete_what = linespec_complete_what::EXPRESSION; |
| 2712 | } |
| 2713 | |
| 2714 | /* Convert the data in PARSER_RESULT to SALs. */ |
| 2715 | if (parser->completion_tracker == NULL) |
| 2716 | return convert_linespec_to_sals (PARSER_STATE (parser), |
| 2717 | PARSER_RESULT (parser)); |
| 2718 | |
| 2719 | return {}; |
| 2720 | } |
| 2721 | |
| 2722 | |
| 2723 | /* A constructor for linespec_state. */ |
| 2724 | |
| 2725 | static void |
| 2726 | linespec_state_constructor (struct linespec_state *self, |
| 2727 | int flags, const struct language_defn *language, |
| 2728 | struct program_space *search_pspace, |
| 2729 | struct symtab *default_symtab, |
| 2730 | int default_line, |
| 2731 | struct linespec_result *canonical) |
| 2732 | { |
| 2733 | memset (self, 0, sizeof (*self)); |
| 2734 | self->language = language; |
| 2735 | self->funfirstline = (flags & DECODE_LINE_FUNFIRSTLINE) ? 1 : 0; |
| 2736 | self->list_mode = (flags & DECODE_LINE_LIST_MODE) ? 1 : 0; |
| 2737 | self->search_pspace = search_pspace; |
| 2738 | self->default_symtab = default_symtab; |
| 2739 | self->default_line = default_line; |
| 2740 | self->canonical = canonical; |
| 2741 | self->program_space = current_program_space; |
| 2742 | self->addr_set = htab_create_alloc (10, hash_address_entry, eq_address_entry, |
| 2743 | xfree, xcalloc, xfree); |
| 2744 | self->is_linespec = 0; |
| 2745 | } |
| 2746 | |
| 2747 | /* Initialize a new linespec parser. */ |
| 2748 | |
| 2749 | linespec_parser::linespec_parser (int flags, |
| 2750 | const struct language_defn *language, |
| 2751 | struct program_space *search_pspace, |
| 2752 | struct symtab *default_symtab, |
| 2753 | int default_line, |
| 2754 | struct linespec_result *canonical) |
| 2755 | { |
| 2756 | lexer.current.type = LSTOKEN_CONSUMED; |
| 2757 | PARSER_RESULT (this)->file_symtabs = new std::vector<symtab *> (); |
| 2758 | PARSER_EXPLICIT (this)->func_name_match_type |
| 2759 | = symbol_name_match_type::WILD; |
| 2760 | PARSER_EXPLICIT (this)->line_offset.sign = LINE_OFFSET_UNKNOWN; |
| 2761 | linespec_state_constructor (PARSER_STATE (this), flags, language, |
| 2762 | search_pspace, |
| 2763 | default_symtab, default_line, canonical); |
| 2764 | } |
| 2765 | |
| 2766 | /* A destructor for linespec_state. */ |
| 2767 | |
| 2768 | static void |
| 2769 | linespec_state_destructor (struct linespec_state *self) |
| 2770 | { |
| 2771 | htab_delete (self->addr_set); |
| 2772 | xfree (self->canonical_names); |
| 2773 | } |
| 2774 | |
| 2775 | /* Delete a linespec parser. */ |
| 2776 | |
| 2777 | linespec_parser::~linespec_parser () |
| 2778 | { |
| 2779 | xfree (PARSER_EXPLICIT (this)->source_filename); |
| 2780 | xfree (PARSER_EXPLICIT (this)->label_name); |
| 2781 | xfree (PARSER_EXPLICIT (this)->function_name); |
| 2782 | |
| 2783 | delete PARSER_RESULT (this)->file_symtabs; |
| 2784 | delete PARSER_RESULT (this)->function_symbols; |
| 2785 | delete PARSER_RESULT (this)->minimal_symbols; |
| 2786 | delete PARSER_RESULT (this)->labels.label_symbols; |
| 2787 | delete PARSER_RESULT (this)->labels.function_symbols; |
| 2788 | |
| 2789 | linespec_state_destructor (PARSER_STATE (this)); |
| 2790 | } |
| 2791 | |
| 2792 | /* See description in linespec.h. */ |
| 2793 | |
| 2794 | void |
| 2795 | linespec_lex_to_end (const char **stringp) |
| 2796 | { |
| 2797 | linespec_token token; |
| 2798 | const char *orig; |
| 2799 | |
| 2800 | if (stringp == NULL || *stringp == NULL) |
| 2801 | return; |
| 2802 | |
| 2803 | linespec_parser parser (0, current_language, NULL, NULL, 0, NULL); |
| 2804 | parser.lexer.saved_arg = *stringp; |
| 2805 | PARSER_STREAM (&parser) = orig = *stringp; |
| 2806 | |
| 2807 | do |
| 2808 | { |
| 2809 | /* Stop before any comma tokens; we need it to keep it |
| 2810 | as the next token in the string. */ |
| 2811 | token = linespec_lexer_peek_token (&parser); |
| 2812 | if (token.type == LSTOKEN_COMMA) |
| 2813 | break; |
| 2814 | token = linespec_lexer_consume_token (&parser); |
| 2815 | } |
| 2816 | while (token.type != LSTOKEN_EOI && token.type != LSTOKEN_KEYWORD); |
| 2817 | |
| 2818 | *stringp += PARSER_STREAM (&parser) - orig; |
| 2819 | } |
| 2820 | |
| 2821 | /* See linespec.h. */ |
| 2822 | |
| 2823 | void |
| 2824 | linespec_complete_function (completion_tracker &tracker, |
| 2825 | const char *function, |
| 2826 | symbol_name_match_type func_match_type, |
| 2827 | const char *source_filename) |
| 2828 | { |
| 2829 | complete_symbol_mode mode = complete_symbol_mode::LINESPEC; |
| 2830 | |
| 2831 | if (source_filename != NULL) |
| 2832 | { |
| 2833 | collect_file_symbol_completion_matches (tracker, mode, func_match_type, |
| 2834 | function, function, source_filename); |
| 2835 | } |
| 2836 | else |
| 2837 | { |
| 2838 | collect_symbol_completion_matches (tracker, mode, func_match_type, |
| 2839 | function, function); |
| 2840 | |
| 2841 | } |
| 2842 | } |
| 2843 | |
| 2844 | /* Helper for complete_linespec to simplify it. SOURCE_FILENAME is |
| 2845 | only meaningful if COMPONENT is FUNCTION. */ |
| 2846 | |
| 2847 | static void |
| 2848 | complete_linespec_component (linespec_parser *parser, |
| 2849 | completion_tracker &tracker, |
| 2850 | const char *text, |
| 2851 | linespec_complete_what component, |
| 2852 | const char *source_filename) |
| 2853 | { |
| 2854 | if (component == linespec_complete_what::KEYWORD) |
| 2855 | { |
| 2856 | complete_on_enum (tracker, linespec_keywords, text, text); |
| 2857 | } |
| 2858 | else if (component == linespec_complete_what::EXPRESSION) |
| 2859 | { |
| 2860 | const char *word |
| 2861 | = advance_to_expression_complete_word_point (tracker, text); |
| 2862 | complete_expression (tracker, text, word); |
| 2863 | } |
| 2864 | else if (component == linespec_complete_what::FUNCTION) |
| 2865 | { |
| 2866 | completion_list fn_list; |
| 2867 | |
| 2868 | symbol_name_match_type match_type |
| 2869 | = PARSER_EXPLICIT (parser)->func_name_match_type; |
| 2870 | linespec_complete_function (tracker, text, match_type, source_filename); |
| 2871 | if (source_filename == NULL) |
| 2872 | { |
| 2873 | /* Haven't seen a source component, like in "b |
| 2874 | file.c:function[TAB]". Maybe this wasn't a function, but |
| 2875 | a filename instead, like "b file.[TAB]". */ |
| 2876 | fn_list = complete_source_filenames (text); |
| 2877 | } |
| 2878 | |
| 2879 | /* If we only have a single filename completion, append a ':' for |
| 2880 | the user, since that's the only thing that can usefully follow |
| 2881 | the filename. */ |
| 2882 | if (fn_list.size () == 1 && !tracker.have_completions ()) |
| 2883 | { |
| 2884 | char *fn = fn_list[0].release (); |
| 2885 | |
| 2886 | /* If we also need to append a quote char, it needs to be |
| 2887 | appended before the ':'. Append it now, and make ':' the |
| 2888 | new "quote" char. */ |
| 2889 | if (tracker.quote_char ()) |
| 2890 | { |
| 2891 | char quote_char_str[2] = { (char) tracker.quote_char () }; |
| 2892 | |
| 2893 | fn = reconcat (fn, fn, quote_char_str, (char *) NULL); |
| 2894 | tracker.set_quote_char (':'); |
| 2895 | } |
| 2896 | else |
| 2897 | fn = reconcat (fn, fn, ":", (char *) NULL); |
| 2898 | fn_list[0].reset (fn); |
| 2899 | |
| 2900 | /* Tell readline to skip appending a space. */ |
| 2901 | tracker.set_suppress_append_ws (true); |
| 2902 | } |
| 2903 | tracker.add_completions (std::move (fn_list)); |
| 2904 | } |
| 2905 | } |
| 2906 | |
| 2907 | /* Helper for linespec_complete_label. Find labels that match |
| 2908 | LABEL_NAME in the function symbols listed in the PARSER, and add |
| 2909 | them to the tracker. */ |
| 2910 | |
| 2911 | static void |
| 2912 | complete_label (completion_tracker &tracker, |
| 2913 | linespec_parser *parser, |
| 2914 | const char *label_name) |
| 2915 | { |
| 2916 | std::vector<block_symbol> label_function_symbols; |
| 2917 | std::vector<block_symbol> *labels |
| 2918 | = find_label_symbols (PARSER_STATE (parser), |
| 2919 | PARSER_RESULT (parser)->function_symbols, |
| 2920 | &label_function_symbols, |
| 2921 | label_name, true); |
| 2922 | |
| 2923 | if (labels != nullptr) |
| 2924 | { |
| 2925 | for (const auto &label : *labels) |
| 2926 | { |
| 2927 | char *match = xstrdup (label.symbol->search_name ()); |
| 2928 | tracker.add_completion (gdb::unique_xmalloc_ptr<char> (match)); |
| 2929 | } |
| 2930 | delete labels; |
| 2931 | } |
| 2932 | } |
| 2933 | |
| 2934 | /* See linespec.h. */ |
| 2935 | |
| 2936 | void |
| 2937 | linespec_complete_label (completion_tracker &tracker, |
| 2938 | const struct language_defn *language, |
| 2939 | const char *source_filename, |
| 2940 | const char *function_name, |
| 2941 | symbol_name_match_type func_name_match_type, |
| 2942 | const char *label_name) |
| 2943 | { |
| 2944 | linespec_parser parser (0, language, NULL, NULL, 0, NULL); |
| 2945 | |
| 2946 | line_offset unknown_offset = { 0, LINE_OFFSET_UNKNOWN }; |
| 2947 | |
| 2948 | try |
| 2949 | { |
| 2950 | convert_explicit_location_to_linespec (PARSER_STATE (&parser), |
| 2951 | PARSER_RESULT (&parser), |
| 2952 | source_filename, |
| 2953 | function_name, |
| 2954 | func_name_match_type, |
| 2955 | NULL, unknown_offset); |
| 2956 | } |
| 2957 | catch (const gdb_exception_error &ex) |
| 2958 | { |
| 2959 | return; |
| 2960 | } |
| 2961 | |
| 2962 | complete_label (tracker, &parser, label_name); |
| 2963 | } |
| 2964 | |
| 2965 | /* See description in linespec.h. */ |
| 2966 | |
| 2967 | void |
| 2968 | linespec_complete (completion_tracker &tracker, const char *text, |
| 2969 | symbol_name_match_type match_type) |
| 2970 | { |
| 2971 | const char *orig = text; |
| 2972 | |
| 2973 | linespec_parser parser (0, current_language, NULL, NULL, 0, NULL); |
| 2974 | parser.lexer.saved_arg = text; |
| 2975 | PARSER_EXPLICIT (&parser)->func_name_match_type = match_type; |
| 2976 | PARSER_STREAM (&parser) = text; |
| 2977 | |
| 2978 | parser.completion_tracker = &tracker; |
| 2979 | PARSER_STATE (&parser)->is_linespec = 1; |
| 2980 | |
| 2981 | /* Parse as much as possible. parser.completion_word will hold |
| 2982 | furthest completion point we managed to parse to. */ |
| 2983 | try |
| 2984 | { |
| 2985 | parse_linespec (&parser, text, match_type); |
| 2986 | } |
| 2987 | catch (const gdb_exception_error &except) |
| 2988 | { |
| 2989 | } |
| 2990 | |
| 2991 | if (parser.completion_quote_char != '\0' |
| 2992 | && parser.completion_quote_end != NULL |
| 2993 | && parser.completion_quote_end[1] == '\0') |
| 2994 | { |
| 2995 | /* If completing a quoted string with the cursor right at |
| 2996 | terminating quote char, complete the completion word without |
| 2997 | interpretation, so that readline advances the cursor one |
| 2998 | whitespace past the quote, even if there's no match. This |
| 2999 | makes these cases behave the same: |
| 3000 | |
| 3001 | before: "b function()" |
| 3002 | after: "b function() " |
| 3003 | |
| 3004 | before: "b 'function()'" |
| 3005 | after: "b 'function()' " |
| 3006 | |
| 3007 | and trusts the user in this case: |
| 3008 | |
| 3009 | before: "b 'not_loaded_function_yet()'" |
| 3010 | after: "b 'not_loaded_function_yet()' " |
| 3011 | */ |
| 3012 | parser.complete_what = linespec_complete_what::NOTHING; |
| 3013 | parser.completion_quote_char = '\0'; |
| 3014 | |
| 3015 | gdb::unique_xmalloc_ptr<char> text_copy |
| 3016 | (xstrdup (parser.completion_word)); |
| 3017 | tracker.add_completion (std::move (text_copy)); |
| 3018 | } |
| 3019 | |
| 3020 | tracker.set_quote_char (parser.completion_quote_char); |
| 3021 | |
| 3022 | if (parser.complete_what == linespec_complete_what::LABEL) |
| 3023 | { |
| 3024 | parser.complete_what = linespec_complete_what::NOTHING; |
| 3025 | |
| 3026 | const char *func_name = PARSER_EXPLICIT (&parser)->function_name; |
| 3027 | |
| 3028 | std::vector<block_symbol> function_symbols; |
| 3029 | std::vector<bound_minimal_symbol> minimal_symbols; |
| 3030 | find_linespec_symbols (PARSER_STATE (&parser), |
| 3031 | PARSER_RESULT (&parser)->file_symtabs, |
| 3032 | func_name, match_type, |
| 3033 | &function_symbols, &minimal_symbols); |
| 3034 | |
| 3035 | PARSER_RESULT (&parser)->function_symbols |
| 3036 | = new std::vector<block_symbol> (std::move (function_symbols)); |
| 3037 | PARSER_RESULT (&parser)->minimal_symbols |
| 3038 | = new std::vector<bound_minimal_symbol> (std::move (minimal_symbols)); |
| 3039 | |
| 3040 | complete_label (tracker, &parser, parser.completion_word); |
| 3041 | } |
| 3042 | else if (parser.complete_what == linespec_complete_what::FUNCTION) |
| 3043 | { |
| 3044 | /* While parsing/lexing, we didn't know whether the completion |
| 3045 | word completes to a unique function/source name already or |
| 3046 | not. |
| 3047 | |
| 3048 | E.g.: |
| 3049 | "b function() <tab>" |
| 3050 | may need to complete either to: |
| 3051 | "b function() const" |
| 3052 | or to: |
| 3053 | "b function() if/thread/task" |
| 3054 | |
| 3055 | Or, this: |
| 3056 | "b foo t" |
| 3057 | may need to complete either to: |
| 3058 | "b foo template_fun<T>()" |
| 3059 | with "foo" being the template function's return type, or to: |
| 3060 | "b foo thread/task" |
| 3061 | |
| 3062 | Or, this: |
| 3063 | "b file<TAB>" |
| 3064 | may need to complete either to a source file name: |
| 3065 | "b file.c" |
| 3066 | or this, also a filename, but a unique completion: |
| 3067 | "b file.c:" |
| 3068 | or to a function name: |
| 3069 | "b file_function" |
| 3070 | |
| 3071 | Address that by completing assuming source or function, and |
| 3072 | seeing if we find a completion that matches exactly the |
| 3073 | completion word. If so, then it must be a function (see note |
| 3074 | below) and we advance the completion word to the end of input |
| 3075 | and switch to KEYWORD completion mode. |
| 3076 | |
| 3077 | Note: if we find a unique completion for a source filename, |
| 3078 | then it won't match the completion word, because the LCD will |
| 3079 | contain a trailing ':'. And if we're completing at or after |
| 3080 | the ':', then complete_linespec_component won't try to |
| 3081 | complete on source filenames. */ |
| 3082 | |
| 3083 | const char *word = parser.completion_word; |
| 3084 | |
| 3085 | complete_linespec_component (&parser, tracker, |
| 3086 | parser.completion_word, |
| 3087 | linespec_complete_what::FUNCTION, |
| 3088 | PARSER_EXPLICIT (&parser)->source_filename); |
| 3089 | |
| 3090 | parser.complete_what = linespec_complete_what::NOTHING; |
| 3091 | |
| 3092 | if (tracker.quote_char ()) |
| 3093 | { |
| 3094 | /* The function/file name was not close-quoted, so this |
| 3095 | can't be a keyword. Note: complete_linespec_component |
| 3096 | may have swapped the original quote char for ':' when we |
| 3097 | get here, but that still indicates the same. */ |
| 3098 | } |
| 3099 | else if (!tracker.have_completions ()) |
| 3100 | { |
| 3101 | size_t key_start; |
| 3102 | size_t wordlen = strlen (parser.completion_word); |
| 3103 | |
| 3104 | key_start |
| 3105 | = string_find_incomplete_keyword_at_end (linespec_keywords, |
| 3106 | parser.completion_word, |
| 3107 | wordlen); |
| 3108 | |
| 3109 | if (key_start != -1 |
| 3110 | || (wordlen > 0 |
| 3111 | && parser.completion_word[wordlen - 1] == ' ')) |
| 3112 | { |
| 3113 | parser.completion_word += key_start; |
| 3114 | parser.complete_what = linespec_complete_what::KEYWORD; |
| 3115 | } |
| 3116 | } |
| 3117 | else if (tracker.completes_to_completion_word (word)) |
| 3118 | { |
| 3119 | /* Skip the function and complete on keywords. */ |
| 3120 | parser.completion_word += strlen (word); |
| 3121 | parser.complete_what = linespec_complete_what::KEYWORD; |
| 3122 | tracker.discard_completions (); |
| 3123 | } |
| 3124 | } |
| 3125 | |
| 3126 | tracker.advance_custom_word_point_by (parser.completion_word - orig); |
| 3127 | |
| 3128 | complete_linespec_component (&parser, tracker, |
| 3129 | parser.completion_word, |
| 3130 | parser.complete_what, |
| 3131 | PARSER_EXPLICIT (&parser)->source_filename); |
| 3132 | |
| 3133 | /* If we're past the "filename:function:label:offset" linespec, and |
| 3134 | didn't find any match, then assume the user might want to create |
| 3135 | a pending breakpoint anyway and offer the keyword |
| 3136 | completions. */ |
| 3137 | if (!parser.completion_quote_char |
| 3138 | && (parser.complete_what == linespec_complete_what::FUNCTION |
| 3139 | || parser.complete_what == linespec_complete_what::LABEL |
| 3140 | || parser.complete_what == linespec_complete_what::NOTHING) |
| 3141 | && !tracker.have_completions ()) |
| 3142 | { |
| 3143 | const char *end |
| 3144 | = parser.completion_word + strlen (parser.completion_word); |
| 3145 | |
| 3146 | if (end > orig && end[-1] == ' ') |
| 3147 | { |
| 3148 | tracker.advance_custom_word_point_by (end - parser.completion_word); |
| 3149 | |
| 3150 | complete_linespec_component (&parser, tracker, end, |
| 3151 | linespec_complete_what::KEYWORD, |
| 3152 | NULL); |
| 3153 | } |
| 3154 | } |
| 3155 | } |
| 3156 | |
| 3157 | /* A helper function for decode_line_full and decode_line_1 to |
| 3158 | turn LOCATION into std::vector<symtab_and_line>. */ |
| 3159 | |
| 3160 | static std::vector<symtab_and_line> |
| 3161 | event_location_to_sals (linespec_parser *parser, |
| 3162 | const struct event_location *location) |
| 3163 | { |
| 3164 | std::vector<symtab_and_line> result; |
| 3165 | |
| 3166 | switch (event_location_type (location)) |
| 3167 | { |
| 3168 | case LINESPEC_LOCATION: |
| 3169 | { |
| 3170 | PARSER_STATE (parser)->is_linespec = 1; |
| 3171 | try |
| 3172 | { |
| 3173 | const linespec_location *ls = get_linespec_location (location); |
| 3174 | result = parse_linespec (parser, |
| 3175 | ls->spec_string, ls->match_type); |
| 3176 | } |
| 3177 | catch (const gdb_exception_error &except) |
| 3178 | { |
| 3179 | throw; |
| 3180 | } |
| 3181 | } |
| 3182 | break; |
| 3183 | |
| 3184 | case ADDRESS_LOCATION: |
| 3185 | { |
| 3186 | const char *addr_string = get_address_string_location (location); |
| 3187 | CORE_ADDR addr = get_address_location (location); |
| 3188 | |
| 3189 | if (addr_string != NULL) |
| 3190 | { |
| 3191 | addr = linespec_expression_to_pc (&addr_string); |
| 3192 | if (PARSER_STATE (parser)->canonical != NULL) |
| 3193 | PARSER_STATE (parser)->canonical->location |
| 3194 | = copy_event_location (location); |
| 3195 | } |
| 3196 | |
| 3197 | result = convert_address_location_to_sals (PARSER_STATE (parser), |
| 3198 | addr); |
| 3199 | } |
| 3200 | break; |
| 3201 | |
| 3202 | case EXPLICIT_LOCATION: |
| 3203 | { |
| 3204 | const struct explicit_location *explicit_loc; |
| 3205 | |
| 3206 | explicit_loc = get_explicit_location_const (location); |
| 3207 | result = convert_explicit_location_to_sals (PARSER_STATE (parser), |
| 3208 | PARSER_RESULT (parser), |
| 3209 | explicit_loc); |
| 3210 | } |
| 3211 | break; |
| 3212 | |
| 3213 | case PROBE_LOCATION: |
| 3214 | /* Probes are handled by their own decoders. */ |
| 3215 | gdb_assert_not_reached ("attempt to decode probe location"); |
| 3216 | break; |
| 3217 | |
| 3218 | default: |
| 3219 | gdb_assert_not_reached ("unhandled event location type"); |
| 3220 | } |
| 3221 | |
| 3222 | return result; |
| 3223 | } |
| 3224 | |
| 3225 | /* See linespec.h. */ |
| 3226 | |
| 3227 | void |
| 3228 | decode_line_full (struct event_location *location, int flags, |
| 3229 | struct program_space *search_pspace, |
| 3230 | struct symtab *default_symtab, |
| 3231 | int default_line, struct linespec_result *canonical, |
| 3232 | const char *select_mode, |
| 3233 | const char *filter) |
| 3234 | { |
| 3235 | std::vector<const char *> filters; |
| 3236 | struct linespec_state *state; |
| 3237 | |
| 3238 | gdb_assert (canonical != NULL); |
| 3239 | /* The filter only makes sense for 'all'. */ |
| 3240 | gdb_assert (filter == NULL || select_mode == multiple_symbols_all); |
| 3241 | gdb_assert (select_mode == NULL |
| 3242 | || select_mode == multiple_symbols_all |
| 3243 | || select_mode == multiple_symbols_ask |
| 3244 | || select_mode == multiple_symbols_cancel); |
| 3245 | gdb_assert ((flags & DECODE_LINE_LIST_MODE) == 0); |
| 3246 | |
| 3247 | linespec_parser parser (flags, current_language, |
| 3248 | search_pspace, default_symtab, |
| 3249 | default_line, canonical); |
| 3250 | |
| 3251 | scoped_restore_current_program_space restore_pspace; |
| 3252 | |
| 3253 | std::vector<symtab_and_line> result = event_location_to_sals (&parser, |
| 3254 | location); |
| 3255 | state = PARSER_STATE (&parser); |
| 3256 | |
| 3257 | if (result.size () == 0) |
| 3258 | throw_error (NOT_SUPPORTED_ERROR, _("Location %s not available"), |
| 3259 | event_location_to_string (location)); |
| 3260 | |
| 3261 | gdb_assert (result.size () == 1 || canonical->pre_expanded); |
| 3262 | canonical->pre_expanded = 1; |
| 3263 | |
| 3264 | /* Arrange for allocated canonical names to be freed. */ |
| 3265 | std::vector<gdb::unique_xmalloc_ptr<char>> hold_names; |
| 3266 | for (int i = 0; i < result.size (); ++i) |
| 3267 | { |
| 3268 | gdb_assert (state->canonical_names[i].suffix != NULL); |
| 3269 | hold_names.emplace_back (state->canonical_names[i].suffix); |
| 3270 | } |
| 3271 | |
| 3272 | if (select_mode == NULL) |
| 3273 | { |
| 3274 | if (top_level_interpreter ()->interp_ui_out ()->is_mi_like_p ()) |
| 3275 | select_mode = multiple_symbols_all; |
| 3276 | else |
| 3277 | select_mode = multiple_symbols_select_mode (); |
| 3278 | } |
| 3279 | |
| 3280 | if (select_mode == multiple_symbols_all) |
| 3281 | { |
| 3282 | if (filter != NULL) |
| 3283 | { |
| 3284 | filters.push_back (filter); |
| 3285 | filter_results (state, &result, filters); |
| 3286 | } |
| 3287 | else |
| 3288 | convert_results_to_lsals (state, &result); |
| 3289 | } |
| 3290 | else |
| 3291 | decode_line_2 (state, &result, select_mode); |
| 3292 | } |
| 3293 | |
| 3294 | /* See linespec.h. */ |
| 3295 | |
| 3296 | std::vector<symtab_and_line> |
| 3297 | decode_line_1 (const struct event_location *location, int flags, |
| 3298 | struct program_space *search_pspace, |
| 3299 | struct symtab *default_symtab, |
| 3300 | int default_line) |
| 3301 | { |
| 3302 | linespec_parser parser (flags, current_language, |
| 3303 | search_pspace, default_symtab, |
| 3304 | default_line, NULL); |
| 3305 | |
| 3306 | scoped_restore_current_program_space restore_pspace; |
| 3307 | |
| 3308 | return event_location_to_sals (&parser, location); |
| 3309 | } |
| 3310 | |
| 3311 | /* See linespec.h. */ |
| 3312 | |
| 3313 | std::vector<symtab_and_line> |
| 3314 | decode_line_with_current_source (const char *string, int flags) |
| 3315 | { |
| 3316 | if (string == 0) |
| 3317 | error (_("Empty line specification.")); |
| 3318 | |
| 3319 | /* We use whatever is set as the current source line. We do not try |
| 3320 | and get a default source symtab+line or it will recursively call us! */ |
| 3321 | symtab_and_line cursal = get_current_source_symtab_and_line (); |
| 3322 | |
| 3323 | event_location_up location = string_to_event_location (&string, |
| 3324 | current_language); |
| 3325 | std::vector<symtab_and_line> sals |
| 3326 | = decode_line_1 (location.get (), flags, NULL, cursal.symtab, cursal.line); |
| 3327 | |
| 3328 | if (*string) |
| 3329 | error (_("Junk at end of line specification: %s"), string); |
| 3330 | |
| 3331 | return sals; |
| 3332 | } |
| 3333 | |
| 3334 | /* See linespec.h. */ |
| 3335 | |
| 3336 | std::vector<symtab_and_line> |
| 3337 | decode_line_with_last_displayed (const char *string, int flags) |
| 3338 | { |
| 3339 | if (string == 0) |
| 3340 | error (_("Empty line specification.")); |
| 3341 | |
| 3342 | event_location_up location = string_to_event_location (&string, |
| 3343 | current_language); |
| 3344 | std::vector<symtab_and_line> sals |
| 3345 | = (last_displayed_sal_is_valid () |
| 3346 | ? decode_line_1 (location.get (), flags, NULL, |
| 3347 | get_last_displayed_symtab (), |
| 3348 | get_last_displayed_line ()) |
| 3349 | : decode_line_1 (location.get (), flags, NULL, NULL, 0)); |
| 3350 | |
| 3351 | if (*string) |
| 3352 | error (_("Junk at end of line specification: %s"), string); |
| 3353 | |
| 3354 | return sals; |
| 3355 | } |
| 3356 | |
| 3357 | \f |
| 3358 | |
| 3359 | /* First, some functions to initialize stuff at the beginning of the |
| 3360 | function. */ |
| 3361 | |
| 3362 | static void |
| 3363 | initialize_defaults (struct symtab **default_symtab, int *default_line) |
| 3364 | { |
| 3365 | if (*default_symtab == 0) |
| 3366 | { |
| 3367 | /* Use whatever we have for the default source line. We don't use |
| 3368 | get_current_or_default_symtab_and_line as it can recurse and call |
| 3369 | us back! */ |
| 3370 | struct symtab_and_line cursal = |
| 3371 | get_current_source_symtab_and_line (); |
| 3372 | |
| 3373 | *default_symtab = cursal.symtab; |
| 3374 | *default_line = cursal.line; |
| 3375 | } |
| 3376 | } |
| 3377 | |
| 3378 | \f |
| 3379 | |
| 3380 | /* Evaluate the expression pointed to by EXP_PTR into a CORE_ADDR, |
| 3381 | advancing EXP_PTR past any parsed text. */ |
| 3382 | |
| 3383 | CORE_ADDR |
| 3384 | linespec_expression_to_pc (const char **exp_ptr) |
| 3385 | { |
| 3386 | if (current_program_space->executing_startup) |
| 3387 | /* The error message doesn't really matter, because this case |
| 3388 | should only hit during breakpoint reset. */ |
| 3389 | throw_error (NOT_FOUND_ERROR, _("cannot evaluate expressions while " |
| 3390 | "program space is in startup")); |
| 3391 | |
| 3392 | (*exp_ptr)++; |
| 3393 | return value_as_address (parse_to_comma_and_eval (exp_ptr)); |
| 3394 | } |
| 3395 | |
| 3396 | \f |
| 3397 | |
| 3398 | /* Here's where we recognise an Objective-C Selector. An Objective C |
| 3399 | selector may be implemented by more than one class, therefore it |
| 3400 | may represent more than one method/function. This gives us a |
| 3401 | situation somewhat analogous to C++ overloading. If there's more |
| 3402 | than one method that could represent the selector, then use some of |
| 3403 | the existing C++ code to let the user choose one. */ |
| 3404 | |
| 3405 | static std::vector<symtab_and_line> |
| 3406 | decode_objc (struct linespec_state *self, linespec_p ls, const char *arg) |
| 3407 | { |
| 3408 | struct collect_info info; |
| 3409 | std::vector<const char *> symbol_names; |
| 3410 | const char *new_argptr; |
| 3411 | |
| 3412 | info.state = self; |
| 3413 | std::vector<symtab *> symtabs; |
| 3414 | symtabs.push_back (nullptr); |
| 3415 | |
| 3416 | info.file_symtabs = &symtabs; |
| 3417 | |
| 3418 | std::vector<block_symbol> symbols; |
| 3419 | info.result.symbols = &symbols; |
| 3420 | std::vector<bound_minimal_symbol> minimal_symbols; |
| 3421 | info.result.minimal_symbols = &minimal_symbols; |
| 3422 | |
| 3423 | new_argptr = find_imps (arg, &symbol_names); |
| 3424 | if (symbol_names.empty ()) |
| 3425 | return {}; |
| 3426 | |
| 3427 | add_all_symbol_names_from_pspace (&info, NULL, symbol_names, |
| 3428 | FUNCTIONS_DOMAIN); |
| 3429 | |
| 3430 | std::vector<symtab_and_line> values; |
| 3431 | if (!symbols.empty () || !minimal_symbols.empty ()) |
| 3432 | { |
| 3433 | char *saved_arg; |
| 3434 | |
| 3435 | saved_arg = (char *) alloca (new_argptr - arg + 1); |
| 3436 | memcpy (saved_arg, arg, new_argptr - arg); |
| 3437 | saved_arg[new_argptr - arg] = '\0'; |
| 3438 | |
| 3439 | ls->explicit_loc.function_name = xstrdup (saved_arg); |
| 3440 | ls->function_symbols |
| 3441 | = new std::vector<block_symbol> (std::move (symbols)); |
| 3442 | ls->minimal_symbols |
| 3443 | = new std::vector<bound_minimal_symbol> (std::move (minimal_symbols)); |
| 3444 | values = convert_linespec_to_sals (self, ls); |
| 3445 | |
| 3446 | if (self->canonical) |
| 3447 | { |
| 3448 | std::string holder; |
| 3449 | const char *str; |
| 3450 | |
| 3451 | self->canonical->pre_expanded = 1; |
| 3452 | |
| 3453 | if (ls->explicit_loc.source_filename) |
| 3454 | { |
| 3455 | holder = string_printf ("%s:%s", |
| 3456 | ls->explicit_loc.source_filename, |
| 3457 | saved_arg); |
| 3458 | str = holder.c_str (); |
| 3459 | } |
| 3460 | else |
| 3461 | str = saved_arg; |
| 3462 | |
| 3463 | self->canonical->location |
| 3464 | = new_linespec_location (&str, symbol_name_match_type::FULL); |
| 3465 | } |
| 3466 | } |
| 3467 | |
| 3468 | return values; |
| 3469 | } |
| 3470 | |
| 3471 | namespace { |
| 3472 | |
| 3473 | /* A function object that serves as symbol_found_callback_ftype |
| 3474 | callback for iterate_over_symbols. This is used by |
| 3475 | lookup_prefix_sym to collect type symbols. */ |
| 3476 | class decode_compound_collector |
| 3477 | { |
| 3478 | public: |
| 3479 | decode_compound_collector () |
| 3480 | : m_unique_syms (htab_create_alloc (1, htab_hash_pointer, |
| 3481 | htab_eq_pointer, NULL, |
| 3482 | xcalloc, xfree)) |
| 3483 | { |
| 3484 | } |
| 3485 | |
| 3486 | /* Return all symbols collected. */ |
| 3487 | std::vector<block_symbol> release_symbols () |
| 3488 | { |
| 3489 | return std::move (m_symbols); |
| 3490 | } |
| 3491 | |
| 3492 | /* Callable as a symbol_found_callback_ftype callback. */ |
| 3493 | bool operator () (block_symbol *bsym); |
| 3494 | |
| 3495 | private: |
| 3496 | /* A hash table of all symbols we found. We use this to avoid |
| 3497 | adding any symbol more than once. */ |
| 3498 | htab_up m_unique_syms; |
| 3499 | |
| 3500 | /* The result vector. */ |
| 3501 | std::vector<block_symbol> m_symbols; |
| 3502 | }; |
| 3503 | |
| 3504 | bool |
| 3505 | decode_compound_collector::operator () (block_symbol *bsym) |
| 3506 | { |
| 3507 | void **slot; |
| 3508 | struct type *t; |
| 3509 | struct symbol *sym = bsym->symbol; |
| 3510 | |
| 3511 | if (SYMBOL_CLASS (sym) != LOC_TYPEDEF) |
| 3512 | return true; /* Continue iterating. */ |
| 3513 | |
| 3514 | t = SYMBOL_TYPE (sym); |
| 3515 | t = check_typedef (t); |
| 3516 | if (t->code () != TYPE_CODE_STRUCT |
| 3517 | && t->code () != TYPE_CODE_UNION |
| 3518 | && t->code () != TYPE_CODE_NAMESPACE) |
| 3519 | return true; /* Continue iterating. */ |
| 3520 | |
| 3521 | slot = htab_find_slot (m_unique_syms.get (), sym, INSERT); |
| 3522 | if (!*slot) |
| 3523 | { |
| 3524 | *slot = sym; |
| 3525 | m_symbols.push_back (*bsym); |
| 3526 | } |
| 3527 | |
| 3528 | return true; /* Continue iterating. */ |
| 3529 | } |
| 3530 | |
| 3531 | } // namespace |
| 3532 | |
| 3533 | /* Return any symbols corresponding to CLASS_NAME in FILE_SYMTABS. */ |
| 3534 | |
| 3535 | static std::vector<block_symbol> |
| 3536 | lookup_prefix_sym (struct linespec_state *state, |
| 3537 | std::vector<symtab *> *file_symtabs, |
| 3538 | const char *class_name) |
| 3539 | { |
| 3540 | decode_compound_collector collector; |
| 3541 | |
| 3542 | lookup_name_info lookup_name (class_name, symbol_name_match_type::FULL); |
| 3543 | |
| 3544 | for (const auto &elt : *file_symtabs) |
| 3545 | { |
| 3546 | if (elt == nullptr) |
| 3547 | { |
| 3548 | iterate_over_all_matching_symtabs (state, lookup_name, |
| 3549 | STRUCT_DOMAIN, ALL_DOMAIN, |
| 3550 | NULL, false, collector); |
| 3551 | iterate_over_all_matching_symtabs (state, lookup_name, |
| 3552 | VAR_DOMAIN, ALL_DOMAIN, |
| 3553 | NULL, false, collector); |
| 3554 | } |
| 3555 | else |
| 3556 | { |
| 3557 | /* Program spaces that are executing startup should have |
| 3558 | been filtered out earlier. */ |
| 3559 | gdb_assert (!SYMTAB_PSPACE (elt)->executing_startup); |
| 3560 | set_current_program_space (SYMTAB_PSPACE (elt)); |
| 3561 | iterate_over_file_blocks (elt, lookup_name, STRUCT_DOMAIN, collector); |
| 3562 | iterate_over_file_blocks (elt, lookup_name, VAR_DOMAIN, collector); |
| 3563 | } |
| 3564 | } |
| 3565 | |
| 3566 | return collector.release_symbols (); |
| 3567 | } |
| 3568 | |
| 3569 | /* A std::sort comparison function for symbols. The resulting order does |
| 3570 | not actually matter; we just need to be able to sort them so that |
| 3571 | symbols with the same program space end up next to each other. */ |
| 3572 | |
| 3573 | static bool |
| 3574 | compare_symbols (const block_symbol &a, const block_symbol &b) |
| 3575 | { |
| 3576 | uintptr_t uia, uib; |
| 3577 | |
| 3578 | uia = (uintptr_t) SYMTAB_PSPACE (symbol_symtab (a.symbol)); |
| 3579 | uib = (uintptr_t) SYMTAB_PSPACE (symbol_symtab (b.symbol)); |
| 3580 | |
| 3581 | if (uia < uib) |
| 3582 | return true; |
| 3583 | if (uia > uib) |
| 3584 | return false; |
| 3585 | |
| 3586 | uia = (uintptr_t) a.symbol; |
| 3587 | uib = (uintptr_t) b.symbol; |
| 3588 | |
| 3589 | if (uia < uib) |
| 3590 | return true; |
| 3591 | |
| 3592 | return false; |
| 3593 | } |
| 3594 | |
| 3595 | /* Like compare_symbols but for minimal symbols. */ |
| 3596 | |
| 3597 | static bool |
| 3598 | compare_msymbols (const bound_minimal_symbol &a, const bound_minimal_symbol &b) |
| 3599 | { |
| 3600 | uintptr_t uia, uib; |
| 3601 | |
| 3602 | uia = (uintptr_t) a.objfile->pspace; |
| 3603 | uib = (uintptr_t) a.objfile->pspace; |
| 3604 | |
| 3605 | if (uia < uib) |
| 3606 | return true; |
| 3607 | if (uia > uib) |
| 3608 | return false; |
| 3609 | |
| 3610 | uia = (uintptr_t) a.minsym; |
| 3611 | uib = (uintptr_t) b.minsym; |
| 3612 | |
| 3613 | if (uia < uib) |
| 3614 | return true; |
| 3615 | |
| 3616 | return false; |
| 3617 | } |
| 3618 | |
| 3619 | /* Look for all the matching instances of each symbol in NAMES. Only |
| 3620 | instances from PSPACE are considered; other program spaces are |
| 3621 | handled by our caller. If PSPACE is NULL, then all program spaces |
| 3622 | are considered. Results are stored into INFO. */ |
| 3623 | |
| 3624 | static void |
| 3625 | add_all_symbol_names_from_pspace (struct collect_info *info, |
| 3626 | struct program_space *pspace, |
| 3627 | const std::vector<const char *> &names, |
| 3628 | enum search_domain search_domain) |
| 3629 | { |
| 3630 | for (const char *iter : names) |
| 3631 | add_matching_symbols_to_info (iter, |
| 3632 | symbol_name_match_type::FULL, |
| 3633 | search_domain, info, pspace); |
| 3634 | } |
| 3635 | |
| 3636 | static void |
| 3637 | find_superclass_methods (std::vector<struct type *> &&superclasses, |
| 3638 | const char *name, enum language name_lang, |
| 3639 | std::vector<const char *> *result_names) |
| 3640 | { |
| 3641 | size_t old_len = result_names->size (); |
| 3642 | |
| 3643 | while (1) |
| 3644 | { |
| 3645 | std::vector<struct type *> new_supers; |
| 3646 | |
| 3647 | for (type *t : superclasses) |
| 3648 | find_methods (t, name_lang, name, result_names, &new_supers); |
| 3649 | |
| 3650 | if (result_names->size () != old_len || new_supers.empty ()) |
| 3651 | break; |
| 3652 | |
| 3653 | superclasses = std::move (new_supers); |
| 3654 | } |
| 3655 | } |
| 3656 | |
| 3657 | /* This finds the method METHOD_NAME in the class CLASS_NAME whose type is |
| 3658 | given by one of the symbols in SYM_CLASSES. Matches are returned |
| 3659 | in SYMBOLS (for debug symbols) and MINSYMS (for minimal symbols). */ |
| 3660 | |
| 3661 | static void |
| 3662 | find_method (struct linespec_state *self, std::vector<symtab *> *file_symtabs, |
| 3663 | const char *class_name, const char *method_name, |
| 3664 | std::vector<block_symbol> *sym_classes, |
| 3665 | std::vector<block_symbol> *symbols, |
| 3666 | std::vector<bound_minimal_symbol> *minsyms) |
| 3667 | { |
| 3668 | size_t last_result_len; |
| 3669 | std::vector<struct type *> superclass_vec; |
| 3670 | std::vector<const char *> result_names; |
| 3671 | struct collect_info info; |
| 3672 | |
| 3673 | /* Sort symbols so that symbols with the same program space are next |
| 3674 | to each other. */ |
| 3675 | std::sort (sym_classes->begin (), sym_classes->end (), |
| 3676 | compare_symbols); |
| 3677 | |
| 3678 | info.state = self; |
| 3679 | info.file_symtabs = file_symtabs; |
| 3680 | info.result.symbols = symbols; |
| 3681 | info.result.minimal_symbols = minsyms; |
| 3682 | |
| 3683 | /* Iterate over all the types, looking for the names of existing |
| 3684 | methods matching METHOD_NAME. If we cannot find a direct method in a |
| 3685 | given program space, then we consider inherited methods; this is |
| 3686 | not ideal (ideal would be to respect C++ hiding rules), but it |
| 3687 | seems good enough and is what GDB has historically done. We only |
| 3688 | need to collect the names because later we find all symbols with |
| 3689 | those names. This loop is written in a somewhat funny way |
| 3690 | because we collect data across the program space before deciding |
| 3691 | what to do. */ |
| 3692 | last_result_len = 0; |
| 3693 | for (const auto &elt : *sym_classes) |
| 3694 | { |
| 3695 | struct type *t; |
| 3696 | struct program_space *pspace; |
| 3697 | struct symbol *sym = elt.symbol; |
| 3698 | unsigned int ix = &elt - &*sym_classes->begin (); |
| 3699 | |
| 3700 | /* Program spaces that are executing startup should have |
| 3701 | been filtered out earlier. */ |
| 3702 | pspace = SYMTAB_PSPACE (symbol_symtab (sym)); |
| 3703 | gdb_assert (!pspace->executing_startup); |
| 3704 | set_current_program_space (pspace); |
| 3705 | t = check_typedef (SYMBOL_TYPE (sym)); |
| 3706 | find_methods (t, sym->language (), |
| 3707 | method_name, &result_names, &superclass_vec); |
| 3708 | |
| 3709 | /* Handle all items from a single program space at once; and be |
| 3710 | sure not to miss the last batch. */ |
| 3711 | if (ix == sym_classes->size () - 1 |
| 3712 | || (pspace |
| 3713 | != SYMTAB_PSPACE (symbol_symtab (sym_classes->at (ix + 1).symbol)))) |
| 3714 | { |
| 3715 | /* If we did not find a direct implementation anywhere in |
| 3716 | this program space, consider superclasses. */ |
| 3717 | if (result_names.size () == last_result_len) |
| 3718 | find_superclass_methods (std::move (superclass_vec), method_name, |
| 3719 | sym->language (), &result_names); |
| 3720 | |
| 3721 | /* We have a list of candidate symbol names, so now we |
| 3722 | iterate over the symbol tables looking for all |
| 3723 | matches in this pspace. */ |
| 3724 | add_all_symbol_names_from_pspace (&info, pspace, result_names, |
| 3725 | FUNCTIONS_DOMAIN); |
| 3726 | |
| 3727 | superclass_vec.clear (); |
| 3728 | last_result_len = result_names.size (); |
| 3729 | } |
| 3730 | } |
| 3731 | |
| 3732 | if (!symbols->empty () || !minsyms->empty ()) |
| 3733 | return; |
| 3734 | |
| 3735 | /* Throw an NOT_FOUND_ERROR. This will be caught by the caller |
| 3736 | and other attempts to locate the symbol will be made. */ |
| 3737 | throw_error (NOT_FOUND_ERROR, _("see caller, this text doesn't matter")); |
| 3738 | } |
| 3739 | |
| 3740 | \f |
| 3741 | |
| 3742 | namespace { |
| 3743 | |
| 3744 | /* This function object is a callback for iterate_over_symtabs, used |
| 3745 | when collecting all matching symtabs. */ |
| 3746 | |
| 3747 | class symtab_collector |
| 3748 | { |
| 3749 | public: |
| 3750 | symtab_collector () |
| 3751 | : m_symtab_table (htab_create (1, htab_hash_pointer, htab_eq_pointer, |
| 3752 | NULL)) |
| 3753 | { |
| 3754 | } |
| 3755 | |
| 3756 | /* Callable as a symbol_found_callback_ftype callback. */ |
| 3757 | bool operator () (symtab *sym); |
| 3758 | |
| 3759 | /* Return an rvalue reference to the collected symtabs. */ |
| 3760 | std::vector<symtab *> &&release_symtabs () |
| 3761 | { |
| 3762 | return std::move (m_symtabs); |
| 3763 | } |
| 3764 | |
| 3765 | private: |
| 3766 | /* The result vector of symtabs. */ |
| 3767 | std::vector<symtab *> m_symtabs; |
| 3768 | |
| 3769 | /* This is used to ensure the symtabs are unique. */ |
| 3770 | htab_up m_symtab_table; |
| 3771 | }; |
| 3772 | |
| 3773 | bool |
| 3774 | symtab_collector::operator () (struct symtab *symtab) |
| 3775 | { |
| 3776 | void **slot; |
| 3777 | |
| 3778 | slot = htab_find_slot (m_symtab_table.get (), symtab, INSERT); |
| 3779 | if (!*slot) |
| 3780 | { |
| 3781 | *slot = symtab; |
| 3782 | m_symtabs.push_back (symtab); |
| 3783 | } |
| 3784 | |
| 3785 | return false; |
| 3786 | } |
| 3787 | |
| 3788 | } // namespace |
| 3789 | |
| 3790 | /* Given a file name, return a list of all matching symtabs. If |
| 3791 | SEARCH_PSPACE is not NULL, the search is restricted to just that |
| 3792 | program space. */ |
| 3793 | |
| 3794 | static std::vector<symtab *> |
| 3795 | collect_symtabs_from_filename (const char *file, |
| 3796 | struct program_space *search_pspace) |
| 3797 | { |
| 3798 | symtab_collector collector; |
| 3799 | |
| 3800 | /* Find that file's data. */ |
| 3801 | if (search_pspace == NULL) |
| 3802 | { |
| 3803 | for (struct program_space *pspace : program_spaces) |
| 3804 | { |
| 3805 | if (pspace->executing_startup) |
| 3806 | continue; |
| 3807 | |
| 3808 | set_current_program_space (pspace); |
| 3809 | iterate_over_symtabs (file, collector); |
| 3810 | } |
| 3811 | } |
| 3812 | else |
| 3813 | { |
| 3814 | set_current_program_space (search_pspace); |
| 3815 | iterate_over_symtabs (file, collector); |
| 3816 | } |
| 3817 | |
| 3818 | return collector.release_symtabs (); |
| 3819 | } |
| 3820 | |
| 3821 | /* Return all the symtabs associated to the FILENAME. If SEARCH_PSPACE is |
| 3822 | not NULL, the search is restricted to just that program space. */ |
| 3823 | |
| 3824 | static std::vector<symtab *> |
| 3825 | symtabs_from_filename (const char *filename, |
| 3826 | struct program_space *search_pspace) |
| 3827 | { |
| 3828 | std::vector<symtab *> result |
| 3829 | = collect_symtabs_from_filename (filename, search_pspace); |
| 3830 | |
| 3831 | if (result.empty ()) |
| 3832 | { |
| 3833 | if (!have_full_symbols () && !have_partial_symbols ()) |
| 3834 | throw_error (NOT_FOUND_ERROR, |
| 3835 | _("No symbol table is loaded. " |
| 3836 | "Use the \"file\" command.")); |
| 3837 | source_file_not_found_error (filename); |
| 3838 | } |
| 3839 | |
| 3840 | return result; |
| 3841 | } |
| 3842 | |
| 3843 | /* See symtab.h. */ |
| 3844 | |
| 3845 | void |
| 3846 | symbol_searcher::find_all_symbols (const std::string &name, |
| 3847 | const struct language_defn *language, |
| 3848 | enum search_domain search_domain, |
| 3849 | std::vector<symtab *> *search_symtabs, |
| 3850 | struct program_space *search_pspace) |
| 3851 | { |
| 3852 | symbol_searcher_collect_info info; |
| 3853 | struct linespec_state state; |
| 3854 | |
| 3855 | memset (&state, 0, sizeof (state)); |
| 3856 | state.language = language; |
| 3857 | info.state = &state; |
| 3858 | |
| 3859 | info.result.symbols = &m_symbols; |
| 3860 | info.result.minimal_symbols = &m_minimal_symbols; |
| 3861 | std::vector<symtab *> all_symtabs; |
| 3862 | if (search_symtabs == nullptr) |
| 3863 | { |
| 3864 | all_symtabs.push_back (nullptr); |
| 3865 | search_symtabs = &all_symtabs; |
| 3866 | } |
| 3867 | info.file_symtabs = search_symtabs; |
| 3868 | |
| 3869 | add_matching_symbols_to_info (name.c_str (), symbol_name_match_type::WILD, |
| 3870 | search_domain, &info, search_pspace); |
| 3871 | } |
| 3872 | |
| 3873 | /* Look up a function symbol named NAME in symtabs FILE_SYMTABS. Matching |
| 3874 | debug symbols are returned in SYMBOLS. Matching minimal symbols are |
| 3875 | returned in MINSYMS. */ |
| 3876 | |
| 3877 | static void |
| 3878 | find_function_symbols (struct linespec_state *state, |
| 3879 | std::vector<symtab *> *file_symtabs, const char *name, |
| 3880 | symbol_name_match_type name_match_type, |
| 3881 | std::vector<block_symbol> *symbols, |
| 3882 | std::vector<bound_minimal_symbol> *minsyms) |
| 3883 | { |
| 3884 | struct collect_info info; |
| 3885 | std::vector<const char *> symbol_names; |
| 3886 | |
| 3887 | info.state = state; |
| 3888 | info.result.symbols = symbols; |
| 3889 | info.result.minimal_symbols = minsyms; |
| 3890 | info.file_symtabs = file_symtabs; |
| 3891 | |
| 3892 | /* Try NAME as an Objective-C selector. */ |
| 3893 | find_imps (name, &symbol_names); |
| 3894 | if (!symbol_names.empty ()) |
| 3895 | add_all_symbol_names_from_pspace (&info, state->search_pspace, |
| 3896 | symbol_names, FUNCTIONS_DOMAIN); |
| 3897 | else |
| 3898 | add_matching_symbols_to_info (name, name_match_type, FUNCTIONS_DOMAIN, |
| 3899 | &info, state->search_pspace); |
| 3900 | } |
| 3901 | |
| 3902 | /* Find all symbols named NAME in FILE_SYMTABS, returning debug symbols |
| 3903 | in SYMBOLS and minimal symbols in MINSYMS. */ |
| 3904 | |
| 3905 | static void |
| 3906 | find_linespec_symbols (struct linespec_state *state, |
| 3907 | std::vector<symtab *> *file_symtabs, |
| 3908 | const char *lookup_name, |
| 3909 | symbol_name_match_type name_match_type, |
| 3910 | std::vector <block_symbol> *symbols, |
| 3911 | std::vector<bound_minimal_symbol> *minsyms) |
| 3912 | { |
| 3913 | gdb::unique_xmalloc_ptr<char> canon |
| 3914 | = cp_canonicalize_string_no_typedefs (lookup_name); |
| 3915 | if (canon != nullptr) |
| 3916 | lookup_name = canon.get (); |
| 3917 | |
| 3918 | /* It's important to not call expand_symtabs_matching unnecessarily |
| 3919 | as it can really slow things down (by unnecessarily expanding |
| 3920 | potentially 1000s of symtabs, which when debugging some apps can |
| 3921 | cost 100s of seconds). Avoid this to some extent by *first* calling |
| 3922 | find_function_symbols, and only if that doesn't find anything |
| 3923 | *then* call find_method. This handles two important cases: |
| 3924 | 1) break (anonymous namespace)::foo |
| 3925 | 2) break class::method where method is in class (and not a baseclass) */ |
| 3926 | |
| 3927 | find_function_symbols (state, file_symtabs, lookup_name, |
| 3928 | name_match_type, symbols, minsyms); |
| 3929 | |
| 3930 | /* If we were unable to locate a symbol of the same name, try dividing |
| 3931 | the name into class and method names and searching the class and its |
| 3932 | baseclasses. */ |
| 3933 | if (symbols->empty () && minsyms->empty ()) |
| 3934 | { |
| 3935 | std::string klass, method; |
| 3936 | const char *last, *p, *scope_op; |
| 3937 | |
| 3938 | /* See if we can find a scope operator and break this symbol |
| 3939 | name into namespaces${SCOPE_OPERATOR}class_name and method_name. */ |
| 3940 | scope_op = "::"; |
| 3941 | p = find_toplevel_string (lookup_name, scope_op); |
| 3942 | |
| 3943 | last = NULL; |
| 3944 | while (p != NULL) |
| 3945 | { |
| 3946 | last = p; |
| 3947 | p = find_toplevel_string (p + strlen (scope_op), scope_op); |
| 3948 | } |
| 3949 | |
| 3950 | /* If no scope operator was found, there is nothing more we can do; |
| 3951 | we already attempted to lookup the entire name as a symbol |
| 3952 | and failed. */ |
| 3953 | if (last == NULL) |
| 3954 | return; |
| 3955 | |
| 3956 | /* LOOKUP_NAME points to the class name. |
| 3957 | LAST points to the method name. */ |
| 3958 | klass = std::string (lookup_name, last - lookup_name); |
| 3959 | |
| 3960 | /* Skip past the scope operator. */ |
| 3961 | last += strlen (scope_op); |
| 3962 | method = last; |
| 3963 | |
| 3964 | /* Find a list of classes named KLASS. */ |
| 3965 | std::vector<block_symbol> classes |
| 3966 | = lookup_prefix_sym (state, file_symtabs, klass.c_str ()); |
| 3967 | if (!classes.empty ()) |
| 3968 | { |
| 3969 | /* Now locate a list of suitable methods named METHOD. */ |
| 3970 | try |
| 3971 | { |
| 3972 | find_method (state, file_symtabs, |
| 3973 | klass.c_str (), method.c_str (), |
| 3974 | &classes, symbols, minsyms); |
| 3975 | } |
| 3976 | |
| 3977 | /* If successful, we're done. If NOT_FOUND_ERROR |
| 3978 | was not thrown, rethrow the exception that we did get. */ |
| 3979 | catch (const gdb_exception_error &except) |
| 3980 | { |
| 3981 | if (except.error != NOT_FOUND_ERROR) |
| 3982 | throw; |
| 3983 | } |
| 3984 | } |
| 3985 | } |
| 3986 | } |
| 3987 | |
| 3988 | /* Helper for find_label_symbols. Find all labels that match name |
| 3989 | NAME in BLOCK. Return all labels that match in FUNCTION_SYMBOLS. |
| 3990 | Return the actual function symbol in which the label was found in |
| 3991 | LABEL_FUNC_RET. If COMPLETION_MODE is true, then NAME is |
| 3992 | interpreted as a label name prefix. Otherwise, only a label named |
| 3993 | exactly NAME match. */ |
| 3994 | |
| 3995 | static void |
| 3996 | find_label_symbols_in_block (const struct block *block, |
| 3997 | const char *name, struct symbol *fn_sym, |
| 3998 | bool completion_mode, |
| 3999 | std::vector<block_symbol> *result, |
| 4000 | std::vector<block_symbol> *label_funcs_ret) |
| 4001 | { |
| 4002 | if (completion_mode) |
| 4003 | { |
| 4004 | struct block_iterator iter; |
| 4005 | struct symbol *sym; |
| 4006 | size_t name_len = strlen (name); |
| 4007 | |
| 4008 | int (*cmp) (const char *, const char *, size_t); |
| 4009 | cmp = case_sensitivity == case_sensitive_on ? strncmp : strncasecmp; |
| 4010 | |
| 4011 | ALL_BLOCK_SYMBOLS (block, iter, sym) |
| 4012 | { |
| 4013 | if (symbol_matches_domain (sym->language (), |
| 4014 | SYMBOL_DOMAIN (sym), LABEL_DOMAIN) |
| 4015 | && cmp (sym->search_name (), name, name_len) == 0) |
| 4016 | { |
| 4017 | result->push_back ({sym, block}); |
| 4018 | label_funcs_ret->push_back ({fn_sym, block}); |
| 4019 | } |
| 4020 | } |
| 4021 | } |
| 4022 | else |
| 4023 | { |
| 4024 | struct block_symbol label_sym |
| 4025 | = lookup_symbol (name, block, LABEL_DOMAIN, 0); |
| 4026 | |
| 4027 | if (label_sym.symbol != NULL) |
| 4028 | { |
| 4029 | result->push_back (label_sym); |
| 4030 | label_funcs_ret->push_back ({fn_sym, block}); |
| 4031 | } |
| 4032 | } |
| 4033 | } |
| 4034 | |
| 4035 | /* Return all labels that match name NAME in FUNCTION_SYMBOLS or NULL |
| 4036 | if no matches were found. |
| 4037 | |
| 4038 | Return the actual function symbol in which the label was found in |
| 4039 | LABEL_FUNC_RET. If COMPLETION_MODE is true, then NAME is |
| 4040 | interpreted as a label name prefix. Otherwise, only labels named |
| 4041 | exactly NAME match. */ |
| 4042 | |
| 4043 | |
| 4044 | static std::vector<block_symbol> * |
| 4045 | find_label_symbols (struct linespec_state *self, |
| 4046 | std::vector<block_symbol> *function_symbols, |
| 4047 | std::vector<block_symbol> *label_funcs_ret, |
| 4048 | const char *name, |
| 4049 | bool completion_mode) |
| 4050 | { |
| 4051 | const struct block *block; |
| 4052 | struct symbol *fn_sym; |
| 4053 | std::vector<block_symbol> result; |
| 4054 | |
| 4055 | if (function_symbols == NULL) |
| 4056 | { |
| 4057 | set_current_program_space (self->program_space); |
| 4058 | block = get_current_search_block (); |
| 4059 | |
| 4060 | for (; |
| 4061 | block && !BLOCK_FUNCTION (block); |
| 4062 | block = BLOCK_SUPERBLOCK (block)) |
| 4063 | ; |
| 4064 | if (!block) |
| 4065 | return NULL; |
| 4066 | fn_sym = BLOCK_FUNCTION (block); |
| 4067 | |
| 4068 | find_label_symbols_in_block (block, name, fn_sym, completion_mode, |
| 4069 | &result, label_funcs_ret); |
| 4070 | } |
| 4071 | else |
| 4072 | { |
| 4073 | for (const auto &elt : *function_symbols) |
| 4074 | { |
| 4075 | fn_sym = elt.symbol; |
| 4076 | set_current_program_space (SYMTAB_PSPACE (symbol_symtab (fn_sym))); |
| 4077 | block = SYMBOL_BLOCK_VALUE (fn_sym); |
| 4078 | |
| 4079 | find_label_symbols_in_block (block, name, fn_sym, completion_mode, |
| 4080 | &result, label_funcs_ret); |
| 4081 | } |
| 4082 | } |
| 4083 | |
| 4084 | if (!result.empty ()) |
| 4085 | return new std::vector<block_symbol> (std::move (result)); |
| 4086 | return nullptr; |
| 4087 | } |
| 4088 | |
| 4089 | \f |
| 4090 | |
| 4091 | /* A helper for create_sals_line_offset that handles the 'list_mode' case. */ |
| 4092 | |
| 4093 | static std::vector<symtab_and_line> |
| 4094 | decode_digits_list_mode (struct linespec_state *self, |
| 4095 | linespec_p ls, |
| 4096 | struct symtab_and_line val) |
| 4097 | { |
| 4098 | gdb_assert (self->list_mode); |
| 4099 | |
| 4100 | std::vector<symtab_and_line> values; |
| 4101 | |
| 4102 | for (const auto &elt : *ls->file_symtabs) |
| 4103 | { |
| 4104 | /* The logic above should ensure this. */ |
| 4105 | gdb_assert (elt != NULL); |
| 4106 | |
| 4107 | set_current_program_space (SYMTAB_PSPACE (elt)); |
| 4108 | |
| 4109 | /* Simplistic search just for the list command. */ |
| 4110 | val.symtab = find_line_symtab (elt, val.line, NULL, NULL); |
| 4111 | if (val.symtab == NULL) |
| 4112 | val.symtab = elt; |
| 4113 | val.pspace = SYMTAB_PSPACE (elt); |
| 4114 | val.pc = 0; |
| 4115 | val.explicit_line = true; |
| 4116 | |
| 4117 | add_sal_to_sals (self, &values, &val, NULL, 0); |
| 4118 | } |
| 4119 | |
| 4120 | return values; |
| 4121 | } |
| 4122 | |
| 4123 | /* A helper for create_sals_line_offset that iterates over the symtabs |
| 4124 | associated with LS and returns a vector of corresponding symtab_and_line |
| 4125 | structures. */ |
| 4126 | |
| 4127 | static std::vector<symtab_and_line> |
| 4128 | decode_digits_ordinary (struct linespec_state *self, |
| 4129 | linespec_p ls, |
| 4130 | int line, |
| 4131 | struct linetable_entry **best_entry) |
| 4132 | { |
| 4133 | std::vector<symtab_and_line> sals; |
| 4134 | for (const auto &elt : *ls->file_symtabs) |
| 4135 | { |
| 4136 | std::vector<CORE_ADDR> pcs; |
| 4137 | |
| 4138 | /* The logic above should ensure this. */ |
| 4139 | gdb_assert (elt != NULL); |
| 4140 | |
| 4141 | set_current_program_space (SYMTAB_PSPACE (elt)); |
| 4142 | |
| 4143 | pcs = find_pcs_for_symtab_line (elt, line, best_entry); |
| 4144 | for (CORE_ADDR pc : pcs) |
| 4145 | { |
| 4146 | symtab_and_line sal; |
| 4147 | sal.pspace = SYMTAB_PSPACE (elt); |
| 4148 | sal.symtab = elt; |
| 4149 | sal.line = line; |
| 4150 | sal.explicit_line = true; |
| 4151 | sal.pc = pc; |
| 4152 | sals.push_back (std::move (sal)); |
| 4153 | } |
| 4154 | } |
| 4155 | |
| 4156 | return sals; |
| 4157 | } |
| 4158 | |
| 4159 | \f |
| 4160 | |
| 4161 | /* Return the line offset represented by VARIABLE. */ |
| 4162 | |
| 4163 | static struct line_offset |
| 4164 | linespec_parse_variable (struct linespec_state *self, const char *variable) |
| 4165 | { |
| 4166 | int index = 0; |
| 4167 | const char *p; |
| 4168 | struct line_offset offset = {0, LINE_OFFSET_NONE}; |
| 4169 | |
| 4170 | p = (variable[1] == '$') ? variable + 2 : variable + 1; |
| 4171 | if (*p == '$') |
| 4172 | ++p; |
| 4173 | while (*p >= '0' && *p <= '9') |
| 4174 | ++p; |
| 4175 | if (!*p) /* Reached end of token without hitting non-digit. */ |
| 4176 | { |
| 4177 | /* We have a value history reference. */ |
| 4178 | struct value *val_history; |
| 4179 | |
| 4180 | sscanf ((variable[1] == '$') ? variable + 2 : variable + 1, "%d", &index); |
| 4181 | val_history |
| 4182 | = access_value_history ((variable[1] == '$') ? -index : index); |
| 4183 | if (value_type (val_history)->code () != TYPE_CODE_INT) |
| 4184 | error (_("History values used in line " |
| 4185 | "specs must have integer values.")); |
| 4186 | offset.offset = value_as_long (val_history); |
| 4187 | } |
| 4188 | else |
| 4189 | { |
| 4190 | /* Not all digits -- may be user variable/function or a |
| 4191 | convenience variable. */ |
| 4192 | LONGEST valx; |
| 4193 | struct internalvar *ivar; |
| 4194 | |
| 4195 | /* Try it as a convenience variable. If it is not a convenience |
| 4196 | variable, return and allow normal symbol lookup to occur. */ |
| 4197 | ivar = lookup_only_internalvar (variable + 1); |
| 4198 | if (ivar == NULL) |
| 4199 | /* No internal variable with that name. Mark the offset |
| 4200 | as unknown to allow the name to be looked up as a symbol. */ |
| 4201 | offset.sign = LINE_OFFSET_UNKNOWN; |
| 4202 | else |
| 4203 | { |
| 4204 | /* We found a valid variable name. If it is not an integer, |
| 4205 | throw an error. */ |
| 4206 | if (!get_internalvar_integer (ivar, &valx)) |
| 4207 | error (_("Convenience variables used in line " |
| 4208 | "specs must have integer values.")); |
| 4209 | else |
| 4210 | offset.offset = valx; |
| 4211 | } |
| 4212 | } |
| 4213 | |
| 4214 | return offset; |
| 4215 | } |
| 4216 | \f |
| 4217 | |
| 4218 | /* We've found a minimal symbol MSYMBOL in OBJFILE to associate with our |
| 4219 | linespec; return the SAL in RESULT. This function should return SALs |
| 4220 | matching those from find_function_start_sal, otherwise false |
| 4221 | multiple-locations breakpoints could be placed. */ |
| 4222 | |
| 4223 | static void |
| 4224 | minsym_found (struct linespec_state *self, struct objfile *objfile, |
| 4225 | struct minimal_symbol *msymbol, |
| 4226 | std::vector<symtab_and_line> *result) |
| 4227 | { |
| 4228 | bool want_start_sal; |
| 4229 | |
| 4230 | CORE_ADDR func_addr; |
| 4231 | bool is_function = msymbol_is_function (objfile, msymbol, &func_addr); |
| 4232 | |
| 4233 | if (is_function) |
| 4234 | { |
| 4235 | const char *msym_name = msymbol->linkage_name (); |
| 4236 | |
| 4237 | if (MSYMBOL_TYPE (msymbol) == mst_text_gnu_ifunc |
| 4238 | || MSYMBOL_TYPE (msymbol) == mst_data_gnu_ifunc) |
| 4239 | want_start_sal = gnu_ifunc_resolve_name (msym_name, &func_addr); |
| 4240 | else |
| 4241 | want_start_sal = true; |
| 4242 | } |
| 4243 | |
| 4244 | symtab_and_line sal; |
| 4245 | |
| 4246 | if (is_function && want_start_sal) |
| 4247 | sal = find_function_start_sal (func_addr, NULL, self->funfirstline); |
| 4248 | else |
| 4249 | { |
| 4250 | sal.objfile = objfile; |
| 4251 | sal.msymbol = msymbol; |
| 4252 | /* Store func_addr, not the minsym's address in case this was an |
| 4253 | ifunc that hasn't been resolved yet. */ |
| 4254 | if (is_function) |
| 4255 | sal.pc = func_addr; |
| 4256 | else |
| 4257 | sal.pc = MSYMBOL_VALUE_ADDRESS (objfile, msymbol); |
| 4258 | sal.pspace = current_program_space; |
| 4259 | } |
| 4260 | |
| 4261 | sal.section = MSYMBOL_OBJ_SECTION (objfile, msymbol); |
| 4262 | |
| 4263 | if (maybe_add_address (self->addr_set, objfile->pspace, sal.pc)) |
| 4264 | add_sal_to_sals (self, result, &sal, msymbol->natural_name (), 0); |
| 4265 | } |
| 4266 | |
| 4267 | /* Helper for search_minsyms_for_name that adds the symbol to the |
| 4268 | result. */ |
| 4269 | |
| 4270 | static void |
| 4271 | add_minsym (struct minimal_symbol *minsym, struct objfile *objfile, |
| 4272 | struct symtab *symtab, int list_mode, |
| 4273 | std::vector<struct bound_minimal_symbol> *msyms) |
| 4274 | { |
| 4275 | if (symtab != NULL) |
| 4276 | { |
| 4277 | /* We're looking for a label for which we don't have debug |
| 4278 | info. */ |
| 4279 | CORE_ADDR func_addr; |
| 4280 | if (msymbol_is_function (objfile, minsym, &func_addr)) |
| 4281 | { |
| 4282 | symtab_and_line sal = find_pc_sect_line (func_addr, NULL, 0); |
| 4283 | |
| 4284 | if (symtab != sal.symtab) |
| 4285 | return; |
| 4286 | } |
| 4287 | } |
| 4288 | |
| 4289 | /* Exclude data symbols when looking for breakpoint locations. */ |
| 4290 | if (!list_mode && !msymbol_is_function (objfile, minsym)) |
| 4291 | return; |
| 4292 | |
| 4293 | struct bound_minimal_symbol mo = {minsym, objfile}; |
| 4294 | msyms->push_back (mo); |
| 4295 | return; |
| 4296 | } |
| 4297 | |
| 4298 | /* Search for minimal symbols called NAME. If SEARCH_PSPACE |
| 4299 | is not NULL, the search is restricted to just that program |
| 4300 | space. |
| 4301 | |
| 4302 | If SYMTAB is NULL, search all objfiles, otherwise |
| 4303 | restrict results to the given SYMTAB. */ |
| 4304 | |
| 4305 | static void |
| 4306 | search_minsyms_for_name (struct collect_info *info, |
| 4307 | const lookup_name_info &name, |
| 4308 | struct program_space *search_pspace, |
| 4309 | struct symtab *symtab) |
| 4310 | { |
| 4311 | std::vector<struct bound_minimal_symbol> minsyms; |
| 4312 | |
| 4313 | if (symtab == NULL) |
| 4314 | { |
| 4315 | for (struct program_space *pspace : program_spaces) |
| 4316 | { |
| 4317 | if (search_pspace != NULL && search_pspace != pspace) |
| 4318 | continue; |
| 4319 | if (pspace->executing_startup) |
| 4320 | continue; |
| 4321 | |
| 4322 | set_current_program_space (pspace); |
| 4323 | |
| 4324 | for (objfile *objfile : current_program_space->objfiles ()) |
| 4325 | { |
| 4326 | iterate_over_minimal_symbols (objfile, name, |
| 4327 | [&] (struct minimal_symbol *msym) |
| 4328 | { |
| 4329 | add_minsym (msym, objfile, nullptr, |
| 4330 | info->state->list_mode, |
| 4331 | &minsyms); |
| 4332 | return false; |
| 4333 | }); |
| 4334 | } |
| 4335 | } |
| 4336 | } |
| 4337 | else |
| 4338 | { |
| 4339 | if (search_pspace == NULL || SYMTAB_PSPACE (symtab) == search_pspace) |
| 4340 | { |
| 4341 | set_current_program_space (SYMTAB_PSPACE (symtab)); |
| 4342 | iterate_over_minimal_symbols |
| 4343 | (SYMTAB_OBJFILE (symtab), name, |
| 4344 | [&] (struct minimal_symbol *msym) |
| 4345 | { |
| 4346 | add_minsym (msym, SYMTAB_OBJFILE (symtab), symtab, |
| 4347 | info->state->list_mode, &minsyms); |
| 4348 | return false; |
| 4349 | }); |
| 4350 | } |
| 4351 | } |
| 4352 | |
| 4353 | /* Return true if TYPE is a static symbol. */ |
| 4354 | auto msymbol_type_is_static = [] (enum minimal_symbol_type type) |
| 4355 | { |
| 4356 | switch (type) |
| 4357 | { |
| 4358 | case mst_file_text: |
| 4359 | case mst_file_data: |
| 4360 | case mst_file_bss: |
| 4361 | return true; |
| 4362 | default: |
| 4363 | return false; |
| 4364 | } |
| 4365 | }; |
| 4366 | |
| 4367 | /* Add minsyms to the result set, but filter out trampoline symbols |
| 4368 | if we also found extern symbols with the same name. I.e., don't |
| 4369 | set a breakpoint on both '<foo@plt>' and 'foo', assuming that |
| 4370 | 'foo' is the symbol that the plt resolves to. */ |
| 4371 | for (const bound_minimal_symbol &item : minsyms) |
| 4372 | { |
| 4373 | bool skip = false; |
| 4374 | if (MSYMBOL_TYPE (item.minsym) == mst_solib_trampoline) |
| 4375 | { |
| 4376 | for (const bound_minimal_symbol &item2 : minsyms) |
| 4377 | { |
| 4378 | if (&item2 == &item) |
| 4379 | continue; |
| 4380 | |
| 4381 | /* Trampoline symbols can only jump to exported |
| 4382 | symbols. */ |
| 4383 | if (msymbol_type_is_static (MSYMBOL_TYPE (item2.minsym))) |
| 4384 | continue; |
| 4385 | |
| 4386 | if (strcmp (item.minsym->linkage_name (), |
| 4387 | item2.minsym->linkage_name ()) != 0) |
| 4388 | continue; |
| 4389 | |
| 4390 | /* Found a global minsym with the same name as the |
| 4391 | trampoline. Don't create a location for this |
| 4392 | trampoline. */ |
| 4393 | skip = true; |
| 4394 | break; |
| 4395 | } |
| 4396 | } |
| 4397 | |
| 4398 | if (!skip) |
| 4399 | info->result.minimal_symbols->push_back (item); |
| 4400 | } |
| 4401 | } |
| 4402 | |
| 4403 | /* A helper function to add all symbols matching NAME to INFO. If |
| 4404 | PSPACE is not NULL, the search is restricted to just that program |
| 4405 | space. */ |
| 4406 | |
| 4407 | static void |
| 4408 | add_matching_symbols_to_info (const char *name, |
| 4409 | symbol_name_match_type name_match_type, |
| 4410 | enum search_domain search_domain, |
| 4411 | struct collect_info *info, |
| 4412 | struct program_space *pspace) |
| 4413 | { |
| 4414 | lookup_name_info lookup_name (name, name_match_type); |
| 4415 | |
| 4416 | for (const auto &elt : *info->file_symtabs) |
| 4417 | { |
| 4418 | if (elt == nullptr) |
| 4419 | { |
| 4420 | iterate_over_all_matching_symtabs (info->state, lookup_name, |
| 4421 | VAR_DOMAIN, search_domain, |
| 4422 | pspace, true, |
| 4423 | [&] (block_symbol *bsym) |
| 4424 | { return info->add_symbol (bsym); }); |
| 4425 | search_minsyms_for_name (info, lookup_name, pspace, NULL); |
| 4426 | } |
| 4427 | else if (pspace == NULL || pspace == SYMTAB_PSPACE (elt)) |
| 4428 | { |
| 4429 | int prev_len = info->result.symbols->size (); |
| 4430 | |
| 4431 | /* Program spaces that are executing startup should have |
| 4432 | been filtered out earlier. */ |
| 4433 | gdb_assert (!SYMTAB_PSPACE (elt)->executing_startup); |
| 4434 | set_current_program_space (SYMTAB_PSPACE (elt)); |
| 4435 | iterate_over_file_blocks (elt, lookup_name, VAR_DOMAIN, |
| 4436 | [&] (block_symbol *bsym) |
| 4437 | { return info->add_symbol (bsym); }); |
| 4438 | |
| 4439 | /* If no new symbols were found in this iteration and this symtab |
| 4440 | is in assembler, we might actually be looking for a label for |
| 4441 | which we don't have debug info. Check for a minimal symbol in |
| 4442 | this case. */ |
| 4443 | if (prev_len == info->result.symbols->size () |
| 4444 | && elt->language == language_asm) |
| 4445 | search_minsyms_for_name (info, lookup_name, pspace, elt); |
| 4446 | } |
| 4447 | } |
| 4448 | } |
| 4449 | |
| 4450 | \f |
| 4451 | |
| 4452 | /* Now come some functions that are called from multiple places within |
| 4453 | decode_line_1. */ |
| 4454 | |
| 4455 | static int |
| 4456 | symbol_to_sal (struct symtab_and_line *result, |
| 4457 | int funfirstline, struct symbol *sym) |
| 4458 | { |
| 4459 | if (SYMBOL_CLASS (sym) == LOC_BLOCK) |
| 4460 | { |
| 4461 | *result = find_function_start_sal (sym, funfirstline); |
| 4462 | return 1; |
| 4463 | } |
| 4464 | else |
| 4465 | { |
| 4466 | if (SYMBOL_CLASS (sym) == LOC_LABEL && SYMBOL_VALUE_ADDRESS (sym) != 0) |
| 4467 | { |
| 4468 | *result = {}; |
| 4469 | result->symtab = symbol_symtab (sym); |
| 4470 | result->symbol = sym; |
| 4471 | result->line = SYMBOL_LINE (sym); |
| 4472 | result->pc = SYMBOL_VALUE_ADDRESS (sym); |
| 4473 | result->pspace = SYMTAB_PSPACE (result->symtab); |
| 4474 | result->explicit_pc = 1; |
| 4475 | return 1; |
| 4476 | } |
| 4477 | else if (funfirstline) |
| 4478 | { |
| 4479 | /* Nothing. */ |
| 4480 | } |
| 4481 | else if (SYMBOL_LINE (sym) != 0) |
| 4482 | { |
| 4483 | /* We know its line number. */ |
| 4484 | *result = {}; |
| 4485 | result->symtab = symbol_symtab (sym); |
| 4486 | result->symbol = sym; |
| 4487 | result->line = SYMBOL_LINE (sym); |
| 4488 | result->pc = SYMBOL_VALUE_ADDRESS (sym); |
| 4489 | result->pspace = SYMTAB_PSPACE (result->symtab); |
| 4490 | return 1; |
| 4491 | } |
| 4492 | } |
| 4493 | |
| 4494 | return 0; |
| 4495 | } |
| 4496 | |
| 4497 | linespec_result::~linespec_result () |
| 4498 | { |
| 4499 | for (linespec_sals &lsal : lsals) |
| 4500 | xfree (lsal.canonical); |
| 4501 | } |
| 4502 | |
| 4503 | /* Return the quote characters permitted by the linespec parser. */ |
| 4504 | |
| 4505 | const char * |
| 4506 | get_gdb_linespec_parser_quote_characters (void) |
| 4507 | { |
| 4508 | return linespec_quote_characters; |
| 4509 | } |