1 /* Parser for linespec for the GNU debugger, GDB.
3 Copyright (C) 1986-2013 Free Software Foundation, Inc.
5 This file is part of GDB.
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.
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.
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/>. */
29 #include "completer.h"
31 #include "cp-support.h"
32 #include "parser-defs.h"
34 #include "objc-lang.h"
36 #include "exceptions.h"
39 #include "mi/mi-cmds.h"
41 #include "arch-utils.h"
43 #include "cli/cli-utils.h"
44 #include "filenames.h"
48 typedef struct symbol
*symbolp
;
51 typedef struct type
*typep
;
54 /* An address entry is used to ensure that any given location is only
55 added to the result a single time. It holds an address and the
56 program space from which the address came. */
60 struct program_space
*pspace
;
64 typedef struct bound_minimal_symbol bound_minimal_symbol_d
;
66 DEF_VEC_O (bound_minimal_symbol_d
);
68 /* An enumeration of possible signs for a line offset. */
69 enum offset_relative_sign
74 /* A plus sign ("+") */
77 /* A minus sign ("-") */
80 /* A special "sign" for unspecified offset. */
84 /* A line offset in a linespec. */
88 /* Line offset and any specified sign. */
90 enum offset_relative_sign sign
;
93 /* A linespec. Elements of this structure are filled in by a parser
94 (either parse_linespec or some other function). The structure is
95 then converted into SALs by convert_linespec_to_sals. */
99 /* An expression and the resulting PC. Specifying an expression
100 currently precludes the use of other members. */
102 /* The expression entered by the user. */
103 const char *expression
;
105 /* The resulting PC expression derived from evaluating EXPRESSION. */
108 /* Any specified file symtabs. */
110 /* The user-supplied source filename or NULL if none was specified. */
111 const char *source_filename
;
113 /* The list of symtabs to search to which to limit the search. May not
114 be NULL. If SOURCE_FILENAME is NULL (no user-specified filename),
115 FILE_SYMTABS should contain one single NULL member. This will
116 cause the code to use the default symtab. */
117 VEC (symtab_ptr
) *file_symtabs
;
119 /* The name of a function or method and any matching symbols. */
121 /* The user-specified function name. If no function name was
122 supplied, this may be NULL. */
123 const char *function_name
;
125 /* A list of matching function symbols and minimal symbols. Both lists
126 may be NULL if no matching symbols were found. */
127 VEC (symbolp
) *function_symbols
;
128 VEC (bound_minimal_symbol_d
) *minimal_symbols
;
130 /* The name of a label and matching symbols. */
132 /* The user-specified label name. */
133 const char *label_name
;
135 /* A structure of matching label symbols and the corresponding
136 function symbol in which the label was found. Both may be NULL
137 or both must be non-NULL. */
140 VEC (symbolp
) *label_symbols
;
141 VEC (symbolp
) *function_symbols
;
144 /* Line offset. It may be LINE_OFFSET_UNKNOWN, meaning that no
145 offset was specified. */
146 struct line_offset line_offset
;
148 typedef struct linespec
*linespec_p
;
150 /* A canonical linespec represented as a symtab-related string.
152 Each entry represents the "SYMTAB:SUFFIX" linespec string.
153 SYMTAB can be converted for example by symtab_to_fullname or
154 symtab_to_filename_for_display as needed. */
156 struct linespec_canonical_name
158 /* Remaining text part of the linespec string. */
161 /* If NULL then SUFFIX is the whole linespec string. */
162 struct symtab
*symtab
;
165 /* An instance of this is used to keep all state while linespec
166 operates. This instance is passed around as a 'this' pointer to
167 the various implementation methods. */
169 struct linespec_state
171 /* The language in use during linespec processing. */
172 const struct language_defn
*language
;
174 /* The program space as seen when the module was entered. */
175 struct program_space
*program_space
;
177 /* The default symtab to use, if no other symtab is specified. */
178 struct symtab
*default_symtab
;
180 /* The default line to use. */
183 /* The 'funfirstline' value that was passed in to decode_line_1 or
187 /* Nonzero if we are running in 'list' mode; see decode_line_list. */
190 /* The 'canonical' value passed to decode_line_full, or NULL. */
191 struct linespec_result
*canonical
;
193 /* Canonical strings that mirror the symtabs_and_lines result. */
194 struct linespec_canonical_name
*canonical_names
;
196 /* This is a set of address_entry objects which is used to prevent
197 duplicate symbols from being entered into the result. */
201 /* This is a helper object that is used when collecting symbols into a
206 /* The linespec object in use. */
207 struct linespec_state
*state
;
209 /* A list of symtabs to which to restrict matches. */
210 VEC (symtab_ptr
) *file_symtabs
;
212 /* The result being accumulated. */
215 VEC (symbolp
) *symbols
;
216 VEC (bound_minimal_symbol_d
) *minimal_symbols
;
227 /* A colon "separator" */
239 /* EOI (end of input) */
245 typedef enum ls_token_type linespec_token_type
;
247 /* List of keywords */
249 static const char * const linespec_keywords
[] = { "if", "thread", "task" };
251 /* A token of the linespec lexer */
255 /* The type of the token */
256 linespec_token_type type
;
258 /* Data for the token */
261 /* A string, given as a stoken */
262 struct stoken string
;
268 typedef struct ls_token linespec_token
;
270 #define LS_TOKEN_STOKEN(TOK) (TOK).data.string
271 #define LS_TOKEN_KEYWORD(TOK) (TOK).data.keyword
273 /* An instance of the linespec parser. */
277 /* Lexer internal data */
280 /* Save head of input stream. */
281 const char *saved_arg
;
283 /* Head of the input stream. */
285 #define PARSER_STREAM(P) (*(P)->lexer.stream)
287 /* The current token. */
288 linespec_token current
;
291 /* Is the entire linespec quote-enclosed? */
292 int is_quote_enclosed
;
294 /* Is a keyword syntactically valid at this point?
295 In, e.g., "break thread thread 1", the leading "keyword" must not
296 be interpreted as such. */
299 /* The state of the parse. */
300 struct linespec_state state
;
301 #define PARSER_STATE(PPTR) (&(PPTR)->state)
303 /* The result of the parse. */
304 struct linespec result
;
305 #define PARSER_RESULT(PPTR) (&(PPTR)->result)
307 typedef struct ls_parser linespec_parser
;
309 /* Prototypes for local functions. */
311 static void iterate_over_file_blocks (struct symtab
*symtab
,
312 const char *name
, domain_enum domain
,
313 symbol_found_callback_ftype
*callback
,
316 static void initialize_defaults (struct symtab
**default_symtab
,
319 static CORE_ADDR
linespec_expression_to_pc (const char **exp_ptr
);
321 static struct symtabs_and_lines
decode_objc (struct linespec_state
*self
,
323 const char **argptr
);
325 static VEC (symtab_ptr
) *symtabs_from_filename (const char *);
327 static VEC (symbolp
) *find_label_symbols (struct linespec_state
*self
,
328 VEC (symbolp
) *function_symbols
,
329 VEC (symbolp
) **label_funcs_ret
,
332 static void find_linespec_symbols (struct linespec_state
*self
,
333 VEC (symtab_ptr
) *file_symtabs
,
335 VEC (symbolp
) **symbols
,
336 VEC (bound_minimal_symbol_d
) **minsyms
);
338 static struct line_offset
339 linespec_parse_variable (struct linespec_state
*self
,
340 const char *variable
);
342 static int symbol_to_sal (struct symtab_and_line
*result
,
343 int funfirstline
, struct symbol
*sym
);
345 static void add_matching_symbols_to_info (const char *name
,
346 struct collect_info
*info
,
347 struct program_space
*pspace
);
349 static void add_all_symbol_names_from_pspace (struct collect_info
*info
,
350 struct program_space
*pspace
,
351 VEC (const_char_ptr
) *names
);
353 static VEC (symtab_ptr
) *collect_symtabs_from_filename (const char *file
);
355 static void decode_digits_ordinary (struct linespec_state
*self
,
358 struct symtabs_and_lines
*sals
,
359 struct linetable_entry
**best_entry
);
361 static void decode_digits_list_mode (struct linespec_state
*self
,
363 struct symtabs_and_lines
*values
,
364 struct symtab_and_line val
);
366 static void minsym_found (struct linespec_state
*self
, struct objfile
*objfile
,
367 struct minimal_symbol
*msymbol
,
368 struct symtabs_and_lines
*result
);
370 static int compare_symbols (const void *a
, const void *b
);
372 static int compare_msymbols (const void *a
, const void *b
);
374 static const char *find_toplevel_char (const char *s
, char c
);
376 /* Permitted quote characters for the parser. This is different from the
377 completer's quote characters to allow backward compatibility with the
379 static const char *const linespec_quote_characters
= "\"\'";
381 /* Lexer functions. */
383 /* Lex a number from the input in PARSER. This only supports
386 Return true if input is decimal numbers. Return false if not. */
389 linespec_lexer_lex_number (linespec_parser
*parser
, linespec_token
*tokenp
)
391 tokenp
->type
= LSTOKEN_NUMBER
;
392 LS_TOKEN_STOKEN (*tokenp
).length
= 0;
393 LS_TOKEN_STOKEN (*tokenp
).ptr
= PARSER_STREAM (parser
);
395 /* Keep any sign at the start of the stream. */
396 if (*PARSER_STREAM (parser
) == '+' || *PARSER_STREAM (parser
) == '-')
398 ++LS_TOKEN_STOKEN (*tokenp
).length
;
399 ++(PARSER_STREAM (parser
));
402 while (isdigit (*PARSER_STREAM (parser
)))
404 ++LS_TOKEN_STOKEN (*tokenp
).length
;
405 ++(PARSER_STREAM (parser
));
408 /* If the next character in the input buffer is not a space, comma,
409 quote, or colon, this input does not represent a number. */
410 if (*PARSER_STREAM (parser
) != '\0'
411 && !isspace (*PARSER_STREAM (parser
)) && *PARSER_STREAM (parser
) != ','
412 && *PARSER_STREAM (parser
) != ':'
413 && !strchr (linespec_quote_characters
, *PARSER_STREAM (parser
)))
415 PARSER_STREAM (parser
) = LS_TOKEN_STOKEN (*tokenp
).ptr
;
422 /* Does P represent one of the keywords? If so, return
423 the keyword. If not, return NULL. */
426 linespec_lexer_lex_keyword (const char *p
)
432 for (i
= 0; i
< ARRAY_SIZE (linespec_keywords
); ++i
)
434 int len
= strlen (linespec_keywords
[i
]);
436 /* If P begins with one of the keywords and the next
437 character is not a valid identifier character,
438 we have found a keyword. */
439 if (strncmp (p
, linespec_keywords
[i
], len
) == 0
440 && !(isalnum (p
[len
]) || p
[len
] == '_'))
441 return linespec_keywords
[i
];
448 /* Does STRING represent an Ada operator? If so, return the length
449 of the decoded operator name. If not, return 0. */
452 is_ada_operator (const char *string
)
454 const struct ada_opname_map
*mapping
;
456 for (mapping
= ada_opname_table
;
457 mapping
->encoded
!= NULL
458 && strncmp (mapping
->decoded
, string
,
459 strlen (mapping
->decoded
)) != 0; ++mapping
)
462 return mapping
->decoded
== NULL
? 0 : strlen (mapping
->decoded
);
465 /* Find QUOTE_CHAR in STRING, accounting for the ':' terminal. Return
466 the location of QUOTE_CHAR, or NULL if not found. */
469 skip_quote_char (const char *string
, char quote_char
)
471 const char *p
, *last
;
473 p
= last
= find_toplevel_char (string
, quote_char
);
474 while (p
&& *p
!= '\0' && *p
!= ':')
476 p
= find_toplevel_char (p
, quote_char
);
484 /* Make a writable copy of the string given in TOKEN, trimming
485 any trailing whitespace. */
488 copy_token_string (linespec_token token
)
492 if (token
.type
== LSTOKEN_KEYWORD
)
493 return xstrdup (LS_TOKEN_KEYWORD (token
));
495 str
= savestring (LS_TOKEN_STOKEN (token
).ptr
,
496 LS_TOKEN_STOKEN (token
).length
);
497 s
= remove_trailing_whitespace (str
, str
+ LS_TOKEN_STOKEN (token
).length
);
503 /* Does P represent the end of a quote-enclosed linespec? */
506 is_closing_quote_enclosed (const char *p
)
508 if (strchr (linespec_quote_characters
, *p
))
510 p
= skip_spaces ((char *) p
);
511 return (*p
== '\0' || linespec_lexer_lex_keyword (p
));
514 /* Find the end of the parameter list that starts with *INPUT.
515 This helper function assists with lexing string segments
516 which might contain valid (non-terminating) commas. */
519 find_parameter_list_end (const char *input
)
521 char end_char
, start_char
;
526 if (start_char
== '(')
528 else if (start_char
== '<')
537 if (*p
== start_char
)
539 else if (*p
== end_char
)
554 /* Lex a string from the input in PARSER. */
556 static linespec_token
557 linespec_lexer_lex_string (linespec_parser
*parser
)
559 linespec_token token
;
560 const char *start
= PARSER_STREAM (parser
);
562 token
.type
= LSTOKEN_STRING
;
564 /* If the input stream starts with a quote character, skip to the next
565 quote character, regardless of the content. */
566 if (strchr (linespec_quote_characters
, *PARSER_STREAM (parser
)))
569 char quote_char
= *PARSER_STREAM (parser
);
571 /* Special case: Ada operators. */
572 if (PARSER_STATE (parser
)->language
->la_language
== language_ada
573 && quote_char
== '\"')
575 int len
= is_ada_operator (PARSER_STREAM (parser
));
579 /* The input is an Ada operator. Return the quoted string
581 LS_TOKEN_STOKEN (token
).ptr
= PARSER_STREAM (parser
);
582 LS_TOKEN_STOKEN (token
).length
= len
;
583 PARSER_STREAM (parser
) += len
;
587 /* The input does not represent an Ada operator -- fall through
588 to normal quoted string handling. */
591 /* Skip past the beginning quote. */
592 ++(PARSER_STREAM (parser
));
594 /* Mark the start of the string. */
595 LS_TOKEN_STOKEN (token
).ptr
= PARSER_STREAM (parser
);
597 /* Skip to the ending quote. */
598 end
= skip_quote_char (PARSER_STREAM (parser
), quote_char
);
600 /* Error if the input did not terminate properly. */
602 error (_("unmatched quote"));
604 /* Skip over the ending quote and mark the length of the string. */
605 PARSER_STREAM (parser
) = (char *) ++end
;
606 LS_TOKEN_STOKEN (token
).length
= PARSER_STREAM (parser
) - 2 - start
;
612 /* Otherwise, only identifier characters are permitted.
613 Spaces are the exception. In general, we keep spaces,
614 but only if the next characters in the input do not resolve
615 to one of the keywords.
617 This allows users to forgo quoting CV-qualifiers, template arguments,
618 and similar common language constructs. */
622 if (isspace (*PARSER_STREAM (parser
)))
624 p
= skip_spaces_const (PARSER_STREAM (parser
));
625 /* When we get here we know we've found something followed by
626 a space (we skip over parens and templates below).
627 So if we find a keyword now, we know it is a keyword and not,
628 say, a function name. */
629 if (linespec_lexer_lex_keyword (p
) != NULL
)
631 LS_TOKEN_STOKEN (token
).ptr
= start
;
632 LS_TOKEN_STOKEN (token
).length
633 = PARSER_STREAM (parser
) - start
;
637 /* Advance past the whitespace. */
638 PARSER_STREAM (parser
) = p
;
641 /* If the next character is EOI or (single) ':', the
642 string is complete; return the token. */
643 if (*PARSER_STREAM (parser
) == 0)
645 LS_TOKEN_STOKEN (token
).ptr
= start
;
646 LS_TOKEN_STOKEN (token
).length
= PARSER_STREAM (parser
) - start
;
649 else if (PARSER_STREAM (parser
)[0] == ':')
651 /* Do not tokenize the C++ scope operator. */
652 if (PARSER_STREAM (parser
)[1] == ':')
653 ++(PARSER_STREAM (parser
));
655 /* Do not tokenify if the input length so far is one
656 (i.e, a single-letter drive name) and the next character
657 is a directory separator. This allows Windows-style
658 paths to be recognized as filenames without quoting it. */
659 else if ((PARSER_STREAM (parser
) - start
) != 1
660 || !IS_DIR_SEPARATOR (PARSER_STREAM (parser
)[1]))
662 LS_TOKEN_STOKEN (token
).ptr
= start
;
663 LS_TOKEN_STOKEN (token
).length
664 = PARSER_STREAM (parser
) - start
;
668 /* Special case: permit quote-enclosed linespecs. */
669 else if (parser
->is_quote_enclosed
670 && strchr (linespec_quote_characters
,
671 *PARSER_STREAM (parser
))
672 && is_closing_quote_enclosed (PARSER_STREAM (parser
)))
674 LS_TOKEN_STOKEN (token
).ptr
= start
;
675 LS_TOKEN_STOKEN (token
).length
= PARSER_STREAM (parser
) - start
;
678 /* Because commas may terminate a linespec and appear in
679 the middle of valid string input, special cases for
680 '<' and '(' are necessary. */
681 else if (*PARSER_STREAM (parser
) == '<'
682 || *PARSER_STREAM (parser
) == '(')
686 p
= find_parameter_list_end (PARSER_STREAM (parser
));
689 PARSER_STREAM (parser
) = p
;
693 /* Commas are terminators, but not if they are part of an
695 else if (*PARSER_STREAM (parser
) == ',')
697 if ((PARSER_STATE (parser
)->language
->la_language
699 && (PARSER_STREAM (parser
) - start
) > 8
700 /* strlen ("operator") */)
702 char *p
= strstr (start
, "operator");
704 if (p
!= NULL
&& is_operator_name (p
))
706 /* This is an operator name. Keep going. */
707 ++(PARSER_STREAM (parser
));
712 /* Comma terminates the string. */
713 LS_TOKEN_STOKEN (token
).ptr
= start
;
714 LS_TOKEN_STOKEN (token
).length
= PARSER_STREAM (parser
) - start
;
718 /* Advance the stream. */
719 ++(PARSER_STREAM (parser
));
726 /* Lex a single linespec token from PARSER. */
728 static linespec_token
729 linespec_lexer_lex_one (linespec_parser
*parser
)
733 if (parser
->lexer
.current
.type
== LSTOKEN_CONSUMED
)
735 /* Skip any whitespace. */
736 PARSER_STREAM (parser
) = skip_spaces_const (PARSER_STREAM (parser
));
738 /* Check for a keyword, they end the linespec. */
740 if (parser
->keyword_ok
)
741 keyword
= linespec_lexer_lex_keyword (PARSER_STREAM (parser
));
744 parser
->lexer
.current
.type
= LSTOKEN_KEYWORD
;
745 LS_TOKEN_KEYWORD (parser
->lexer
.current
) = keyword
;
746 return parser
->lexer
.current
;
749 /* Handle other tokens. */
750 switch (*PARSER_STREAM (parser
))
753 parser
->lexer
.current
.type
= LSTOKEN_EOI
;
757 case '0': case '1': case '2': case '3': case '4':
758 case '5': case '6': case '7': case '8': case '9':
759 if (!linespec_lexer_lex_number (parser
, &(parser
->lexer
.current
)))
760 parser
->lexer
.current
= linespec_lexer_lex_string (parser
);
764 /* If we have a scope operator, lex the input as a string.
765 Otherwise, return LSTOKEN_COLON. */
766 if (PARSER_STREAM (parser
)[1] == ':')
767 parser
->lexer
.current
= linespec_lexer_lex_string (parser
);
770 parser
->lexer
.current
.type
= LSTOKEN_COLON
;
771 ++(PARSER_STREAM (parser
));
775 case '\'': case '\"':
776 /* Special case: permit quote-enclosed linespecs. */
777 if (parser
->is_quote_enclosed
778 && is_closing_quote_enclosed (PARSER_STREAM (parser
)))
780 ++(PARSER_STREAM (parser
));
781 parser
->lexer
.current
.type
= LSTOKEN_EOI
;
784 parser
->lexer
.current
= linespec_lexer_lex_string (parser
);
788 parser
->lexer
.current
.type
= LSTOKEN_COMMA
;
789 LS_TOKEN_STOKEN (parser
->lexer
.current
).ptr
790 = PARSER_STREAM (parser
);
791 LS_TOKEN_STOKEN (parser
->lexer
.current
).length
= 1;
792 ++(PARSER_STREAM (parser
));
796 /* If the input is not a number, it must be a string.
797 [Keywords were already considered above.] */
798 parser
->lexer
.current
= linespec_lexer_lex_string (parser
);
803 return parser
->lexer
.current
;
806 /* Consume the current token and return the next token in PARSER's
809 static linespec_token
810 linespec_lexer_consume_token (linespec_parser
*parser
)
812 parser
->lexer
.current
.type
= LSTOKEN_CONSUMED
;
813 return linespec_lexer_lex_one (parser
);
816 /* Return the next token without consuming the current token. */
818 static linespec_token
819 linespec_lexer_peek_token (linespec_parser
*parser
)
822 const char *saved_stream
= PARSER_STREAM (parser
);
823 linespec_token saved_token
= parser
->lexer
.current
;
825 next
= linespec_lexer_consume_token (parser
);
826 PARSER_STREAM (parser
) = saved_stream
;
827 parser
->lexer
.current
= saved_token
;
831 /* Helper functions. */
833 /* Add SAL to SALS. */
836 add_sal_to_sals_basic (struct symtabs_and_lines
*sals
,
837 struct symtab_and_line
*sal
)
840 sals
->sals
= xrealloc (sals
->sals
, sals
->nelts
* sizeof (sals
->sals
[0]));
841 sals
->sals
[sals
->nelts
- 1] = *sal
;
844 /* Add SAL to SALS, and also update SELF->CANONICAL_NAMES to reflect
845 the new sal, if needed. If not NULL, SYMNAME is the name of the
846 symbol to use when constructing the new canonical name.
848 If LITERAL_CANONICAL is non-zero, SYMNAME will be used as the
849 canonical name for the SAL. */
852 add_sal_to_sals (struct linespec_state
*self
,
853 struct symtabs_and_lines
*sals
,
854 struct symtab_and_line
*sal
,
855 const char *symname
, int literal_canonical
)
857 add_sal_to_sals_basic (sals
, sal
);
861 struct linespec_canonical_name
*canonical
;
863 self
->canonical_names
= xrealloc (self
->canonical_names
,
865 * sizeof (*self
->canonical_names
)));
866 canonical
= &self
->canonical_names
[sals
->nelts
- 1];
867 if (!literal_canonical
&& sal
->symtab
)
869 const char *fullname
= symtab_to_fullname (sal
->symtab
);
871 /* Note that the filter doesn't have to be a valid linespec
872 input. We only apply the ":LINE" treatment to Ada for
874 if (symname
!= NULL
&& sal
->line
!= 0
875 && self
->language
->la_language
== language_ada
)
876 canonical
->suffix
= xstrprintf ("%s:%d", symname
, sal
->line
);
877 else if (symname
!= NULL
)
878 canonical
->suffix
= xstrdup (symname
);
880 canonical
->suffix
= xstrprintf ("%d", sal
->line
);
881 canonical
->symtab
= sal
->symtab
;
886 canonical
->suffix
= xstrdup (symname
);
888 canonical
->suffix
= xstrdup ("<unknown>");
889 canonical
->symtab
= NULL
;
894 /* A hash function for address_entry. */
897 hash_address_entry (const void *p
)
899 const struct address_entry
*aep
= p
;
902 hash
= iterative_hash_object (aep
->pspace
, 0);
903 return iterative_hash_object (aep
->addr
, hash
);
906 /* An equality function for address_entry. */
909 eq_address_entry (const void *a
, const void *b
)
911 const struct address_entry
*aea
= a
;
912 const struct address_entry
*aeb
= b
;
914 return aea
->pspace
== aeb
->pspace
&& aea
->addr
== aeb
->addr
;
917 /* Check whether the address, represented by PSPACE and ADDR, is
918 already in the set. If so, return 0. Otherwise, add it and return
922 maybe_add_address (htab_t set
, struct program_space
*pspace
, CORE_ADDR addr
)
924 struct address_entry e
, *p
;
929 slot
= htab_find_slot (set
, &e
, INSERT
);
933 p
= XNEW (struct address_entry
);
934 memcpy (p
, &e
, sizeof (struct address_entry
));
940 /* A callback function and the additional data to call it with. */
942 struct symbol_and_data_callback
944 /* The callback to use. */
945 symbol_found_callback_ftype
*callback
;
947 /* Data to be passed to the callback. */
951 /* A helper for iterate_over_all_matching_symtabs that is used to
952 restrict calls to another callback to symbols representing inline
956 iterate_inline_only (struct symbol
*sym
, void *d
)
958 if (SYMBOL_INLINED (sym
))
960 struct symbol_and_data_callback
*cad
= d
;
962 return cad
->callback (sym
, cad
->data
);
964 return 1; /* Continue iterating. */
967 /* Some data for the expand_symtabs_matching callback. */
969 struct symbol_matcher_data
971 /* The lookup name against which symbol name should be compared. */
972 const char *lookup_name
;
974 /* The routine to be used for comparison. */
975 symbol_name_cmp_ftype symbol_name_cmp
;
978 /* A helper for iterate_over_all_matching_symtabs that is passed as a
979 callback to the expand_symtabs_matching method. */
982 iterate_name_matcher (const char *name
, void *d
)
984 const struct symbol_matcher_data
*data
= d
;
986 if (data
->symbol_name_cmp (name
, data
->lookup_name
) == 0)
987 return 1; /* Expand this symbol's symbol table. */
988 return 0; /* Skip this symbol. */
991 /* A helper that walks over all matching symtabs in all objfiles and
992 calls CALLBACK for each symbol matching NAME. If SEARCH_PSPACE is
993 not NULL, then the search is restricted to just that program
994 space. If INCLUDE_INLINE is nonzero then symbols representing
995 inlined instances of functions will be included in the result. */
998 iterate_over_all_matching_symtabs (struct linespec_state
*state
,
1000 const domain_enum domain
,
1001 symbol_found_callback_ftype
*callback
,
1003 struct program_space
*search_pspace
,
1006 struct objfile
*objfile
;
1007 struct program_space
*pspace
;
1008 struct symbol_matcher_data matcher_data
;
1010 matcher_data
.lookup_name
= name
;
1011 matcher_data
.symbol_name_cmp
=
1012 state
->language
->la_get_symbol_name_cmp
!= NULL
1013 ? state
->language
->la_get_symbol_name_cmp (name
)
1016 ALL_PSPACES (pspace
)
1018 if (search_pspace
!= NULL
&& search_pspace
!= pspace
)
1020 if (pspace
->executing_startup
)
1023 set_current_program_space (pspace
);
1025 ALL_OBJFILES (objfile
)
1027 struct symtab
*symtab
;
1030 objfile
->sf
->qf
->expand_symtabs_matching (objfile
, NULL
,
1031 iterate_name_matcher
,
1035 ALL_OBJFILE_PRIMARY_SYMTABS (objfile
, symtab
)
1037 iterate_over_file_blocks (symtab
, name
, domain
, callback
, data
);
1041 struct symbol_and_data_callback cad
= { callback
, data
};
1042 struct block
*block
;
1045 for (i
= FIRST_LOCAL_BLOCK
;
1046 i
< BLOCKVECTOR_NBLOCKS (BLOCKVECTOR (symtab
)); i
++)
1048 block
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (symtab
), i
);
1049 state
->language
->la_iterate_over_symbols
1050 (block
, name
, domain
, iterate_inline_only
, &cad
);
1058 /* Returns the block to be used for symbol searches from
1059 the current location. */
1061 static struct block
*
1062 get_current_search_block (void)
1064 struct block
*block
;
1065 enum language save_language
;
1067 /* get_selected_block can change the current language when there is
1068 no selected frame yet. */
1069 save_language
= current_language
->la_language
;
1070 block
= get_selected_block (0);
1071 set_language (save_language
);
1076 /* Iterate over static and global blocks. */
1079 iterate_over_file_blocks (struct symtab
*symtab
,
1080 const char *name
, domain_enum domain
,
1081 symbol_found_callback_ftype
*callback
, void *data
)
1083 struct block
*block
;
1085 for (block
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (symtab
), STATIC_BLOCK
);
1087 block
= BLOCK_SUPERBLOCK (block
))
1088 LA_ITERATE_OVER_SYMBOLS (block
, name
, domain
, callback
, data
);
1091 /* A helper for find_method. This finds all methods in type T which
1092 match NAME. It adds matching symbol names to RESULT_NAMES, and
1093 adds T's direct superclasses to SUPERCLASSES. */
1096 find_methods (struct type
*t
, const char *name
,
1097 VEC (const_char_ptr
) **result_names
,
1098 VEC (typep
) **superclasses
)
1101 const char *class_name
= type_name_no_tag (t
);
1103 /* Ignore this class if it doesn't have a name. This is ugly, but
1104 unless we figure out how to get the physname without the name of
1105 the class, then the loop can't do any good. */
1112 /* Loop over each method name. At this level, all overloads of a name
1113 are counted as a single name. There is an inner loop which loops over
1116 for (method_counter
= TYPE_NFN_FIELDS (t
) - 1;
1117 method_counter
>= 0;
1120 const char *method_name
= TYPE_FN_FIELDLIST_NAME (t
, method_counter
);
1121 char dem_opname
[64];
1123 if (strncmp (method_name
, "__", 2) == 0 ||
1124 strncmp (method_name
, "op", 2) == 0 ||
1125 strncmp (method_name
, "type", 4) == 0)
1127 if (cplus_demangle_opname (method_name
, dem_opname
, DMGL_ANSI
))
1128 method_name
= dem_opname
;
1129 else if (cplus_demangle_opname (method_name
, dem_opname
, 0))
1130 method_name
= dem_opname
;
1133 if (strcmp_iw (method_name
, name
) == 0)
1137 for (field_counter
= (TYPE_FN_FIELDLIST_LENGTH (t
, method_counter
)
1143 const char *phys_name
;
1145 f
= TYPE_FN_FIELDLIST1 (t
, method_counter
);
1146 if (TYPE_FN_FIELD_STUB (f
, field_counter
))
1148 phys_name
= TYPE_FN_FIELD_PHYSNAME (f
, field_counter
);
1149 VEC_safe_push (const_char_ptr
, *result_names
, phys_name
);
1155 for (ibase
= 0; ibase
< TYPE_N_BASECLASSES (t
); ibase
++)
1156 VEC_safe_push (typep
, *superclasses
, TYPE_BASECLASS (t
, ibase
));
1159 /* Find an instance of the character C in the string S that is outside
1160 of all parenthesis pairs, single-quoted strings, and double-quoted
1161 strings. Also, ignore the char within a template name, like a ','
1162 within foo<int, int>. */
1165 find_toplevel_char (const char *s
, char c
)
1167 int quoted
= 0; /* zero if we're not in quotes;
1168 '"' if we're in a double-quoted string;
1169 '\'' if we're in a single-quoted string. */
1170 int depth
= 0; /* Number of unclosed parens we've seen. */
1173 for (scan
= s
; *scan
; scan
++)
1177 if (*scan
== quoted
)
1179 else if (*scan
== '\\' && *(scan
+ 1))
1182 else if (*scan
== c
&& ! quoted
&& depth
== 0)
1184 else if (*scan
== '"' || *scan
== '\'')
1186 else if (*scan
== '(' || *scan
== '<')
1188 else if ((*scan
== ')' || *scan
== '>') && depth
> 0)
1195 /* The string equivalent of find_toplevel_char. Returns a pointer
1196 to the location of NEEDLE in HAYSTACK, ignoring any occurrences
1197 inside "()" and "<>". Returns NULL if NEEDLE was not found. */
1200 find_toplevel_string (const char *haystack
, const char *needle
)
1202 const char *s
= haystack
;
1206 s
= find_toplevel_char (s
, *needle
);
1210 /* Found first char in HAYSTACK; check rest of string. */
1211 if (strncmp (s
, needle
, strlen (needle
)) == 0)
1214 /* Didn't find it; loop over HAYSTACK, looking for the next
1215 instance of the first character of NEEDLE. */
1219 while (s
!= NULL
&& *s
!= '\0');
1221 /* NEEDLE was not found in HAYSTACK. */
1225 /* Convert CANONICAL to its string representation using
1226 symtab_to_fullname for SYMTAB. The caller must xfree the result. */
1229 canonical_to_fullform (const struct linespec_canonical_name
*canonical
)
1231 if (canonical
->symtab
== NULL
)
1232 return xstrdup (canonical
->suffix
);
1234 return xstrprintf ("%s:%s", symtab_to_fullname (canonical
->symtab
),
1238 /* Given FILTERS, a list of canonical names, filter the sals in RESULT
1239 and store the result in SELF->CANONICAL. */
1242 filter_results (struct linespec_state
*self
,
1243 struct symtabs_and_lines
*result
,
1244 VEC (const_char_ptr
) *filters
)
1249 for (i
= 0; VEC_iterate (const_char_ptr
, filters
, i
, name
); ++i
)
1251 struct linespec_sals lsal
;
1254 memset (&lsal
, 0, sizeof (lsal
));
1256 for (j
= 0; j
< result
->nelts
; ++j
)
1258 const struct linespec_canonical_name
*canonical
;
1260 struct cleanup
*cleanup
;
1262 canonical
= &self
->canonical_names
[j
];
1263 fullform
= canonical_to_fullform (canonical
);
1264 cleanup
= make_cleanup (xfree
, fullform
);
1266 if (strcmp (name
, fullform
) == 0)
1267 add_sal_to_sals_basic (&lsal
.sals
, &result
->sals
[j
]);
1269 do_cleanups (cleanup
);
1272 if (lsal
.sals
.nelts
> 0)
1274 lsal
.canonical
= xstrdup (name
);
1275 VEC_safe_push (linespec_sals
, self
->canonical
->sals
, &lsal
);
1279 self
->canonical
->pre_expanded
= 0;
1282 /* Store RESULT into SELF->CANONICAL. */
1285 convert_results_to_lsals (struct linespec_state
*self
,
1286 struct symtabs_and_lines
*result
)
1288 struct linespec_sals lsal
;
1290 lsal
.canonical
= NULL
;
1291 lsal
.sals
= *result
;
1292 VEC_safe_push (linespec_sals
, self
->canonical
->sals
, &lsal
);
1295 /* A structure that contains two string representations of a struct
1296 linespec_canonical_name:
1297 - one where the the symtab's fullname is used;
1298 - one where the filename followed the "set filename-display"
1301 struct decode_line_2_item
1303 /* The form using symtab_to_fullname.
1304 It must be xfree'ed after use. */
1307 /* The form using symtab_to_filename_for_display.
1308 It must be xfree'ed after use. */
1311 /* Field is initialized to zero and it is set to one if the user
1312 requested breakpoint for this entry. */
1313 unsigned int selected
: 1;
1316 /* Helper for qsort to sort decode_line_2_item entries by DISPLAYFORM and
1317 secondarily by FULLFORM. */
1320 decode_line_2_compare_items (const void *ap
, const void *bp
)
1322 const struct decode_line_2_item
*a
= ap
;
1323 const struct decode_line_2_item
*b
= bp
;
1326 retval
= strcmp (a
->displayform
, b
->displayform
);
1330 return strcmp (a
->fullform
, b
->fullform
);
1333 /* Handle multiple results in RESULT depending on SELECT_MODE. This
1334 will either return normally, throw an exception on multiple
1335 results, or present a menu to the user. On return, the SALS vector
1336 in SELF->CANONICAL is set up properly. */
1339 decode_line_2 (struct linespec_state
*self
,
1340 struct symtabs_and_lines
*result
,
1341 const char *select_mode
)
1343 char *args
, *prompt
;
1345 struct cleanup
*old_chain
;
1346 VEC (const_char_ptr
) *filters
= NULL
;
1347 struct get_number_or_range_state state
;
1348 struct decode_line_2_item
*items
;
1351 gdb_assert (select_mode
!= multiple_symbols_all
);
1352 gdb_assert (self
->canonical
!= NULL
);
1353 gdb_assert (result
->nelts
>= 1);
1355 old_chain
= make_cleanup (VEC_cleanup (const_char_ptr
), &filters
);
1357 /* Prepare ITEMS array. */
1358 items_count
= result
->nelts
;
1359 items
= xmalloc (sizeof (*items
) * items_count
);
1360 make_cleanup (xfree
, items
);
1361 for (i
= 0; i
< items_count
; ++i
)
1363 const struct linespec_canonical_name
*canonical
;
1364 struct decode_line_2_item
*item
;
1366 canonical
= &self
->canonical_names
[i
];
1367 gdb_assert (canonical
->suffix
!= NULL
);
1370 item
->fullform
= canonical_to_fullform (canonical
);
1371 make_cleanup (xfree
, item
->fullform
);
1373 if (canonical
->symtab
== NULL
)
1374 item
->displayform
= canonical
->suffix
;
1377 const char *fn_for_display
;
1379 fn_for_display
= symtab_to_filename_for_display (canonical
->symtab
);
1380 item
->displayform
= xstrprintf ("%s:%s", fn_for_display
,
1382 make_cleanup (xfree
, item
->displayform
);
1388 /* Sort the list of method names. */
1389 qsort (items
, items_count
, sizeof (*items
), decode_line_2_compare_items
);
1391 /* Remove entries with the same FULLFORM. */
1392 if (items_count
>= 2)
1394 struct decode_line_2_item
*dst
, *src
;
1397 for (src
= &items
[1]; src
< &items
[items_count
]; src
++)
1398 if (strcmp (src
->fullform
, dst
->fullform
) != 0)
1400 items_count
= dst
+ 1 - items
;
1403 if (select_mode
== multiple_symbols_cancel
&& items_count
> 1)
1404 error (_("canceled because the command is ambiguous\n"
1405 "See set/show multiple-symbol."));
1407 if (select_mode
== multiple_symbols_all
|| items_count
== 1)
1409 do_cleanups (old_chain
);
1410 convert_results_to_lsals (self
, result
);
1414 printf_unfiltered (_("[0] cancel\n[1] all\n"));
1415 for (i
= 0; i
< items_count
; i
++)
1416 printf_unfiltered ("[%d] %s\n", i
+ 2, items
[i
].displayform
);
1418 prompt
= getenv ("PS2");
1423 args
= command_line_input (prompt
, 0, "overload-choice");
1425 if (args
== 0 || *args
== 0)
1426 error_no_arg (_("one or more choice numbers"));
1428 init_number_or_range (&state
, args
);
1429 while (!state
.finished
)
1433 num
= get_number_or_range (&state
);
1436 error (_("canceled"));
1439 /* We intentionally make this result in a single breakpoint,
1440 contrary to what older versions of gdb did. The
1441 rationale is that this lets a user get the
1442 multiple_symbols_all behavior even with the 'ask'
1443 setting; and he can get separate breakpoints by entering
1444 "2-57" at the query. */
1445 do_cleanups (old_chain
);
1446 convert_results_to_lsals (self
, result
);
1451 if (num
>= items_count
)
1452 printf_unfiltered (_("No choice number %d.\n"), num
);
1455 struct decode_line_2_item
*item
= &items
[num
];
1457 if (!item
->selected
)
1459 VEC_safe_push (const_char_ptr
, filters
, item
->fullform
);
1464 printf_unfiltered (_("duplicate request for %d ignored.\n"),
1470 filter_results (self
, result
, filters
);
1471 do_cleanups (old_chain
);
1476 /* The parser of linespec itself. */
1478 /* Throw an appropriate error when SYMBOL is not found (optionally in
1481 static void ATTRIBUTE_NORETURN
1482 symbol_not_found_error (const char *symbol
, const char *filename
)
1487 if (!have_full_symbols ()
1488 && !have_partial_symbols ()
1489 && !have_minimal_symbols ())
1490 throw_error (NOT_FOUND_ERROR
,
1491 _("No symbol table is loaded. Use the \"file\" command."));
1493 /* If SYMBOL starts with '$', the user attempted to either lookup
1494 a function/variable in his code starting with '$' or an internal
1495 variable of that name. Since we do not know which, be concise and
1496 explain both possibilities. */
1500 throw_error (NOT_FOUND_ERROR
,
1501 _("Undefined convenience variable or function \"%s\" "
1502 "not defined in \"%s\"."), symbol
, filename
);
1504 throw_error (NOT_FOUND_ERROR
,
1505 _("Undefined convenience variable or function \"%s\" "
1506 "not defined."), symbol
);
1511 throw_error (NOT_FOUND_ERROR
,
1512 _("Function \"%s\" not defined in \"%s\"."),
1515 throw_error (NOT_FOUND_ERROR
,
1516 _("Function \"%s\" not defined."), symbol
);
1520 /* Throw an appropriate error when an unexpected token is encountered
1523 static void ATTRIBUTE_NORETURN
1524 unexpected_linespec_error (linespec_parser
*parser
)
1526 linespec_token token
;
1527 static const char * token_type_strings
[]
1528 = {"keyword", "colon", "string", "number", "comma", "end of input"};
1530 /* Get the token that generated the error. */
1531 token
= linespec_lexer_lex_one (parser
);
1533 /* Finally, throw the error. */
1534 if (token
.type
== LSTOKEN_STRING
|| token
.type
== LSTOKEN_NUMBER
1535 || token
.type
== LSTOKEN_KEYWORD
)
1538 struct cleanup
*cleanup
;
1540 string
= copy_token_string (token
);
1541 cleanup
= make_cleanup (xfree
, string
);
1542 throw_error (GENERIC_ERROR
,
1543 _("malformed linespec error: unexpected %s, \"%s\""),
1544 token_type_strings
[token
.type
], string
);
1547 throw_error (GENERIC_ERROR
,
1548 _("malformed linespec error: unexpected %s"),
1549 token_type_strings
[token
.type
]);
1552 /* Parse and return a line offset in STRING. */
1554 static struct line_offset
1555 linespec_parse_line_offset (const char *string
)
1557 struct line_offset line_offset
= {0, LINE_OFFSET_NONE
};
1561 line_offset
.sign
= LINE_OFFSET_PLUS
;
1564 else if (*string
== '-')
1566 line_offset
.sign
= LINE_OFFSET_MINUS
;
1570 /* Right now, we only allow base 10 for offsets. */
1571 line_offset
.offset
= atoi (string
);
1575 /* Parse the basic_spec in PARSER's input. */
1578 linespec_parse_basic (linespec_parser
*parser
)
1581 linespec_token token
;
1582 VEC (symbolp
) *symbols
, *labels
;
1583 VEC (bound_minimal_symbol_d
) *minimal_symbols
;
1584 struct cleanup
*cleanup
;
1586 /* Get the next token. */
1587 token
= linespec_lexer_lex_one (parser
);
1589 /* If it is EOI or KEYWORD, issue an error. */
1590 if (token
.type
== LSTOKEN_KEYWORD
|| token
.type
== LSTOKEN_EOI
)
1591 unexpected_linespec_error (parser
);
1592 /* If it is a LSTOKEN_NUMBER, we have an offset. */
1593 else if (token
.type
== LSTOKEN_NUMBER
)
1595 /* Record the line offset and get the next token. */
1596 name
= copy_token_string (token
);
1597 cleanup
= make_cleanup (xfree
, name
);
1598 PARSER_RESULT (parser
)->line_offset
= linespec_parse_line_offset (name
);
1599 do_cleanups (cleanup
);
1601 /* Get the next token. */
1602 token
= linespec_lexer_consume_token (parser
);
1604 /* If the next token is a comma, stop parsing and return. */
1605 if (token
.type
== LSTOKEN_COMMA
)
1608 /* If the next token is anything but EOI or KEYWORD, issue
1610 if (token
.type
!= LSTOKEN_KEYWORD
&& token
.type
!= LSTOKEN_EOI
)
1611 unexpected_linespec_error (parser
);
1614 if (token
.type
== LSTOKEN_KEYWORD
|| token
.type
== LSTOKEN_EOI
)
1617 /* Next token must be LSTOKEN_STRING. */
1618 if (token
.type
!= LSTOKEN_STRING
)
1619 unexpected_linespec_error (parser
);
1621 /* The current token will contain the name of a function, method,
1623 name
= copy_token_string (token
);
1624 cleanup
= make_cleanup (xfree
, name
);
1626 /* Try looking it up as a function/method. */
1627 find_linespec_symbols (PARSER_STATE (parser
),
1628 PARSER_RESULT (parser
)->file_symtabs
, name
,
1629 &symbols
, &minimal_symbols
);
1631 if (symbols
!= NULL
|| minimal_symbols
!= NULL
)
1633 PARSER_RESULT (parser
)->function_symbols
= symbols
;
1634 PARSER_RESULT (parser
)->minimal_symbols
= minimal_symbols
;
1635 PARSER_RESULT (parser
)->function_name
= name
;
1637 discard_cleanups (cleanup
);
1641 /* NAME was not a function or a method. So it must be a label
1642 name or user specified variable like "break foo.c:$zippo". */
1643 labels
= find_label_symbols (PARSER_STATE (parser
), NULL
,
1647 PARSER_RESULT (parser
)->labels
.label_symbols
= labels
;
1648 PARSER_RESULT (parser
)->labels
.function_symbols
= symbols
;
1649 PARSER_RESULT (parser
)->label_name
= name
;
1651 discard_cleanups (cleanup
);
1653 else if (token
.type
== LSTOKEN_STRING
1654 && *LS_TOKEN_STOKEN (token
).ptr
== '$')
1656 /* User specified a convenience variable or history value. */
1657 PARSER_RESULT (parser
)->line_offset
1658 = linespec_parse_variable (PARSER_STATE (parser
), name
);
1660 if (PARSER_RESULT (parser
)->line_offset
.sign
== LINE_OFFSET_UNKNOWN
)
1662 /* The user-specified variable was not valid. Do not
1663 throw an error here. parse_linespec will do it for us. */
1664 PARSER_RESULT (parser
)->function_name
= name
;
1665 discard_cleanups (cleanup
);
1671 /* The name is also not a label. Abort parsing. Do not throw
1672 an error here. parse_linespec will do it for us. */
1674 /* Save a copy of the name we were trying to lookup. */
1675 PARSER_RESULT (parser
)->function_name
= name
;
1676 discard_cleanups (cleanup
);
1681 /* Get the next token. */
1682 token
= linespec_lexer_consume_token (parser
);
1684 if (token
.type
== LSTOKEN_COLON
)
1686 /* User specified a label or a lineno. */
1687 token
= linespec_lexer_consume_token (parser
);
1689 if (token
.type
== LSTOKEN_NUMBER
)
1691 /* User specified an offset. Record the line offset and
1692 get the next token. */
1693 name
= copy_token_string (token
);
1694 cleanup
= make_cleanup (xfree
, name
);
1695 PARSER_RESULT (parser
)->line_offset
1696 = linespec_parse_line_offset (name
);
1697 do_cleanups (cleanup
);
1699 /* Ge the next token. */
1700 token
= linespec_lexer_consume_token (parser
);
1702 else if (token
.type
== LSTOKEN_STRING
)
1704 /* Grab a copy of the label's name and look it up. */
1705 name
= copy_token_string (token
);
1706 cleanup
= make_cleanup (xfree
, name
);
1707 labels
= find_label_symbols (PARSER_STATE (parser
),
1708 PARSER_RESULT (parser
)->function_symbols
,
1713 PARSER_RESULT (parser
)->labels
.label_symbols
= labels
;
1714 PARSER_RESULT (parser
)->labels
.function_symbols
= symbols
;
1715 PARSER_RESULT (parser
)->label_name
= name
;
1717 discard_cleanups (cleanup
);
1721 /* We don't know what it was, but it isn't a label. */
1722 throw_error (NOT_FOUND_ERROR
,
1723 _("No label \"%s\" defined in function \"%s\"."),
1724 name
, PARSER_RESULT (parser
)->function_name
);
1727 /* Check for a line offset. */
1728 token
= linespec_lexer_consume_token (parser
);
1729 if (token
.type
== LSTOKEN_COLON
)
1731 /* Get the next token. */
1732 token
= linespec_lexer_consume_token (parser
);
1734 /* It must be a line offset. */
1735 if (token
.type
!= LSTOKEN_NUMBER
)
1736 unexpected_linespec_error (parser
);
1738 /* Record the lione offset and get the next token. */
1739 name
= copy_token_string (token
);
1740 cleanup
= make_cleanup (xfree
, name
);
1742 PARSER_RESULT (parser
)->line_offset
1743 = linespec_parse_line_offset (name
);
1744 do_cleanups (cleanup
);
1746 /* Get the next token. */
1747 token
= linespec_lexer_consume_token (parser
);
1752 /* Trailing ':' in the input. Issue an error. */
1753 unexpected_linespec_error (parser
);
1758 /* Canonicalize the linespec contained in LS. The result is saved into
1759 STATE->canonical. */
1762 canonicalize_linespec (struct linespec_state
*state
, linespec_p ls
)
1764 /* If canonicalization was not requested, no need to do anything. */
1765 if (!state
->canonical
)
1768 /* Shortcut expressions, which can only appear by themselves. */
1769 if (ls
->expression
!= NULL
)
1770 state
->canonical
->addr_string
= xstrdup (ls
->expression
);
1773 struct ui_file
*buf
;
1776 buf
= mem_fileopen ();
1777 if (ls
->source_filename
)
1779 fputs_unfiltered (ls
->source_filename
, buf
);
1783 if (ls
->function_name
)
1786 fputc_unfiltered (':', buf
);
1787 fputs_unfiltered (ls
->function_name
, buf
);
1794 fputc_unfiltered (':', buf
);
1796 if (ls
->function_name
== NULL
)
1800 /* No function was specified, so add the symbol name. */
1801 gdb_assert (ls
->labels
.function_symbols
!= NULL
1802 && (VEC_length (symbolp
, ls
->labels
.function_symbols
)
1804 s
= VEC_index (symbolp
, ls
->labels
.function_symbols
, 0);
1805 fputs_unfiltered (SYMBOL_NATURAL_NAME (s
), buf
);
1806 fputc_unfiltered (':', buf
);
1809 fputs_unfiltered (ls
->label_name
, buf
);
1811 state
->canonical
->special_display
= 1;
1814 if (ls
->line_offset
.sign
!= LINE_OFFSET_UNKNOWN
)
1817 fputc_unfiltered (':', buf
);
1818 fprintf_filtered (buf
, "%s%d",
1819 (ls
->line_offset
.sign
== LINE_OFFSET_NONE
? ""
1820 : (ls
->line_offset
.sign
1821 == LINE_OFFSET_PLUS
? "+" : "-")),
1822 ls
->line_offset
.offset
);
1825 state
->canonical
->addr_string
= ui_file_xstrdup (buf
, NULL
);
1826 ui_file_delete (buf
);
1830 /* Given a line offset in LS, construct the relevant SALs. */
1832 static struct symtabs_and_lines
1833 create_sals_line_offset (struct linespec_state
*self
,
1836 struct symtabs_and_lines values
;
1837 struct symtab_and_line val
;
1838 int use_default
= 0;
1844 /* This is where we need to make sure we have good defaults.
1845 We must guarantee that this section of code is never executed
1846 when we are called with just a function name, since
1847 set_default_source_symtab_and_line uses
1848 select_source_symtab that calls us with such an argument. */
1850 if (VEC_length (symtab_ptr
, ls
->file_symtabs
) == 1
1851 && VEC_index (symtab_ptr
, ls
->file_symtabs
, 0) == NULL
)
1853 const char *fullname
;
1855 set_current_program_space (self
->program_space
);
1857 /* Make sure we have at least a default source line. */
1858 set_default_source_symtab_and_line ();
1859 initialize_defaults (&self
->default_symtab
, &self
->default_line
);
1860 fullname
= symtab_to_fullname (self
->default_symtab
);
1861 VEC_pop (symtab_ptr
, ls
->file_symtabs
);
1862 VEC_free (symtab_ptr
, ls
->file_symtabs
);
1863 ls
->file_symtabs
= collect_symtabs_from_filename (fullname
);
1867 val
.line
= ls
->line_offset
.offset
;
1868 switch (ls
->line_offset
.sign
)
1870 case LINE_OFFSET_PLUS
:
1871 if (ls
->line_offset
.offset
== 0)
1874 val
.line
= self
->default_line
+ val
.line
;
1877 case LINE_OFFSET_MINUS
:
1878 if (ls
->line_offset
.offset
== 0)
1881 val
.line
= self
->default_line
- val
.line
;
1883 val
.line
= -val
.line
;
1886 case LINE_OFFSET_NONE
:
1887 break; /* No need to adjust val.line. */
1890 if (self
->list_mode
)
1891 decode_digits_list_mode (self
, ls
, &values
, val
);
1894 struct linetable_entry
*best_entry
= NULL
;
1896 struct block
**blocks
;
1897 struct cleanup
*cleanup
;
1898 struct symtabs_and_lines intermediate_results
;
1901 intermediate_results
.sals
= NULL
;
1902 intermediate_results
.nelts
= 0;
1904 decode_digits_ordinary (self
, ls
, val
.line
, &intermediate_results
,
1906 if (intermediate_results
.nelts
== 0 && best_entry
!= NULL
)
1907 decode_digits_ordinary (self
, ls
, best_entry
->line
,
1908 &intermediate_results
, &best_entry
);
1910 cleanup
= make_cleanup (xfree
, intermediate_results
.sals
);
1912 /* For optimized code, the compiler can scatter one source line
1913 across disjoint ranges of PC values, even when no duplicate
1914 functions or inline functions are involved. For example,
1915 'for (;;)' inside a non-template, non-inline, and non-ctor-or-dtor
1916 function can result in two PC ranges. In this case, we don't
1917 want to set a breakpoint on the first PC of each range. To filter
1918 such cases, we use containing blocks -- for each PC found
1919 above, we see if there are other PCs that are in the same
1920 block. If yes, the other PCs are filtered out. */
1922 filter
= XNEWVEC (int, intermediate_results
.nelts
);
1923 make_cleanup (xfree
, filter
);
1924 blocks
= XNEWVEC (struct block
*, intermediate_results
.nelts
);
1925 make_cleanup (xfree
, blocks
);
1927 for (i
= 0; i
< intermediate_results
.nelts
; ++i
)
1929 set_current_program_space (intermediate_results
.sals
[i
].pspace
);
1932 blocks
[i
] = block_for_pc_sect (intermediate_results
.sals
[i
].pc
,
1933 intermediate_results
.sals
[i
].section
);
1936 for (i
= 0; i
< intermediate_results
.nelts
; ++i
)
1938 if (blocks
[i
] != NULL
)
1939 for (j
= i
+ 1; j
< intermediate_results
.nelts
; ++j
)
1941 if (blocks
[j
] == blocks
[i
])
1949 for (i
= 0; i
< intermediate_results
.nelts
; ++i
)
1952 struct symbol
*sym
= (blocks
[i
]
1953 ? block_containing_function (blocks
[i
])
1956 if (self
->funfirstline
)
1957 skip_prologue_sal (&intermediate_results
.sals
[i
]);
1958 /* Make sure the line matches the request, not what was
1960 intermediate_results
.sals
[i
].line
= val
.line
;
1961 add_sal_to_sals (self
, &values
, &intermediate_results
.sals
[i
],
1962 sym
? SYMBOL_NATURAL_NAME (sym
) : NULL
, 0);
1965 do_cleanups (cleanup
);
1968 if (values
.nelts
== 0)
1970 if (ls
->source_filename
)
1971 throw_error (NOT_FOUND_ERROR
, _("No line %d in file \"%s\"."),
1972 val
.line
, ls
->source_filename
);
1974 throw_error (NOT_FOUND_ERROR
, _("No line %d in the current file."),
1981 /* Create and return SALs from the linespec LS. */
1983 static struct symtabs_and_lines
1984 convert_linespec_to_sals (struct linespec_state
*state
, linespec_p ls
)
1986 struct symtabs_and_lines sals
= {NULL
, 0};
1988 if (ls
->expression
!= NULL
)
1990 struct symtab_and_line sal
;
1992 /* We have an expression. No other attribute is allowed. */
1993 sal
= find_pc_line (ls
->expr_pc
, 0);
1994 sal
.pc
= ls
->expr_pc
;
1995 sal
.section
= find_pc_overlay (ls
->expr_pc
);
1996 sal
.explicit_pc
= 1;
1997 add_sal_to_sals (state
, &sals
, &sal
, ls
->expression
, 1);
1999 else if (ls
->labels
.label_symbols
!= NULL
)
2001 /* We have just a bunch of functions/methods or labels. */
2003 struct symtab_and_line sal
;
2006 for (i
= 0; VEC_iterate (symbolp
, ls
->labels
.label_symbols
, i
, sym
); ++i
)
2008 struct program_space
*pspace
= SYMTAB_PSPACE (SYMBOL_SYMTAB (sym
));
2010 if (symbol_to_sal (&sal
, state
->funfirstline
, sym
)
2011 && maybe_add_address (state
->addr_set
, pspace
, sal
.pc
))
2012 add_sal_to_sals (state
, &sals
, &sal
,
2013 SYMBOL_NATURAL_NAME (sym
), 0);
2016 else if (ls
->function_symbols
!= NULL
|| ls
->minimal_symbols
!= NULL
)
2018 /* We have just a bunch of functions and/or methods. */
2020 struct symtab_and_line sal
;
2022 bound_minimal_symbol_d
*elem
;
2023 struct program_space
*pspace
;
2025 if (ls
->function_symbols
!= NULL
)
2027 /* Sort symbols so that symbols with the same program space are next
2029 qsort (VEC_address (symbolp
, ls
->function_symbols
),
2030 VEC_length (symbolp
, ls
->function_symbols
),
2031 sizeof (symbolp
), compare_symbols
);
2033 for (i
= 0; VEC_iterate (symbolp
, ls
->function_symbols
, i
, sym
); ++i
)
2035 pspace
= SYMTAB_PSPACE (SYMBOL_SYMTAB (sym
));
2036 set_current_program_space (pspace
);
2037 if (symbol_to_sal (&sal
, state
->funfirstline
, sym
)
2038 && maybe_add_address (state
->addr_set
, pspace
, sal
.pc
))
2039 add_sal_to_sals (state
, &sals
, &sal
,
2040 SYMBOL_NATURAL_NAME (sym
), 0);
2044 if (ls
->minimal_symbols
!= NULL
)
2046 /* Sort minimal symbols by program space, too. */
2047 qsort (VEC_address (bound_minimal_symbol_d
, ls
->minimal_symbols
),
2048 VEC_length (bound_minimal_symbol_d
, ls
->minimal_symbols
),
2049 sizeof (bound_minimal_symbol_d
), compare_msymbols
);
2052 VEC_iterate (bound_minimal_symbol_d
, ls
->minimal_symbols
,
2056 pspace
= elem
->objfile
->pspace
;
2057 set_current_program_space (pspace
);
2058 minsym_found (state
, elem
->objfile
, elem
->minsym
, &sals
);
2062 else if (ls
->line_offset
.sign
!= LINE_OFFSET_UNKNOWN
)
2064 /* Only an offset was specified. */
2065 sals
= create_sals_line_offset (state
, ls
);
2067 /* Make sure we have a filename for canonicalization. */
2068 if (ls
->source_filename
== NULL
)
2070 const char *fullname
= symtab_to_fullname (state
->default_symtab
);
2072 /* It may be more appropriate to keep DEFAULT_SYMTAB in its symtab
2073 form so that displaying SOURCE_FILENAME can follow the current
2074 FILENAME_DISPLAY_STRING setting. But as it is used only rarely
2075 it has been kept for code simplicity only in absolute form. */
2076 ls
->source_filename
= xstrdup (fullname
);
2081 /* We haven't found any results... */
2085 canonicalize_linespec (state
, ls
);
2087 if (sals
.nelts
> 0 && state
->canonical
!= NULL
)
2088 state
->canonical
->pre_expanded
= 1;
2093 /* Parse a string that specifies a linespec.
2094 Pass the address of a char * variable; that variable will be
2095 advanced over the characters actually parsed.
2097 The basic grammar of linespecs:
2099 linespec -> expr_spec | var_spec | basic_spec
2100 expr_spec -> '*' STRING
2101 var_spec -> '$' (STRING | NUMBER)
2103 basic_spec -> file_offset_spec | function_spec | label_spec
2104 file_offset_spec -> opt_file_spec offset_spec
2105 function_spec -> opt_file_spec function_name_spec opt_label_spec
2106 label_spec -> label_name_spec
2108 opt_file_spec -> "" | file_name_spec ':'
2109 opt_label_spec -> "" | ':' label_name_spec
2111 file_name_spec -> STRING
2112 function_name_spec -> STRING
2113 label_name_spec -> STRING
2114 function_name_spec -> STRING
2115 offset_spec -> NUMBER
2119 This may all be followed by several keywords such as "if EXPR",
2122 A comma will terminate parsing.
2124 The function may be an undebuggable function found in minimal symbol table.
2126 If the argument FUNFIRSTLINE is nonzero, we want the first line
2127 of real code inside a function when a function is specified, and it is
2128 not OK to specify a variable or type to get its line number.
2130 DEFAULT_SYMTAB specifies the file to use if none is specified.
2131 It defaults to current_source_symtab.
2132 DEFAULT_LINE specifies the line number to use for relative
2133 line numbers (that start with signs). Defaults to current_source_line.
2134 If CANONICAL is non-NULL, store an array of strings containing the canonical
2135 line specs there if necessary. Currently overloaded member functions and
2136 line numbers or static functions without a filename yield a canonical
2137 line spec. The array and the line spec strings are allocated on the heap,
2138 it is the callers responsibility to free them.
2140 Note that it is possible to return zero for the symtab
2141 if no file is validly specified. Callers must check that.
2142 Also, the line number returned may be invalid. */
2144 /* Parse the linespec in ARGPTR. */
2146 static struct symtabs_and_lines
2147 parse_linespec (linespec_parser
*parser
, const char **argptr
)
2149 linespec_token token
;
2150 struct symtabs_and_lines values
;
2151 volatile struct gdb_exception file_exception
;
2152 struct cleanup
*cleanup
;
2154 /* A special case to start. It has become quite popular for
2155 IDEs to work around bugs in the previous parser by quoting
2156 the entire linespec, so we attempt to deal with this nicely. */
2157 parser
->is_quote_enclosed
= 0;
2158 if (!is_ada_operator (*argptr
)
2159 && strchr (linespec_quote_characters
, **argptr
) != NULL
)
2163 end
= skip_quote_char (*argptr
+ 1, **argptr
);
2164 if (end
!= NULL
&& is_closing_quote_enclosed (end
))
2166 /* Here's the special case. Skip ARGPTR past the initial
2169 parser
->is_quote_enclosed
= 1;
2173 /* A keyword at the start cannot be interpreted as such.
2174 Consider "b thread thread 42". */
2175 parser
->keyword_ok
= 0;
2177 parser
->lexer
.saved_arg
= *argptr
;
2178 parser
->lexer
.stream
= argptr
;
2179 file_exception
.reason
= 0;
2181 /* Initialize the default symtab and line offset. */
2182 initialize_defaults (&PARSER_STATE (parser
)->default_symtab
,
2183 &PARSER_STATE (parser
)->default_line
);
2185 /* Objective-C shortcut. */
2186 values
= decode_objc (PARSER_STATE (parser
), PARSER_RESULT (parser
), argptr
);
2187 if (values
.sals
!= NULL
)
2190 /* Start parsing. */
2192 /* Get the first token. */
2193 token
= linespec_lexer_lex_one (parser
);
2195 /* It must be either LSTOKEN_STRING or LSTOKEN_NUMBER. */
2196 if (token
.type
== LSTOKEN_STRING
&& *LS_TOKEN_STOKEN (token
).ptr
== '*')
2201 /* User specified an expression, *EXPR. */
2202 copy
= expr
= copy_token_string (token
);
2203 cleanup
= make_cleanup (xfree
, expr
);
2204 PARSER_RESULT (parser
)->expr_pc
= linespec_expression_to_pc (©
);
2205 discard_cleanups (cleanup
);
2206 PARSER_RESULT (parser
)->expression
= expr
;
2208 /* This is a little hacky/tricky. If linespec_expression_to_pc
2209 did not evaluate the entire token, then we must find the
2210 string COPY inside the original token buffer. */
2213 PARSER_STREAM (parser
) = strstr (parser
->lexer
.saved_arg
, copy
);
2214 gdb_assert (PARSER_STREAM (parser
) != NULL
);
2217 /* Consume the token. */
2218 linespec_lexer_consume_token (parser
);
2220 goto convert_to_sals
;
2222 else if (token
.type
== LSTOKEN_STRING
&& *LS_TOKEN_STOKEN (token
).ptr
== '$')
2226 /* A NULL entry means to use GLOBAL_DEFAULT_SYMTAB. */
2227 VEC_safe_push (symtab_ptr
, PARSER_RESULT (parser
)->file_symtabs
, NULL
);
2229 /* User specified a convenience variable or history value. */
2230 var
= copy_token_string (token
);
2231 cleanup
= make_cleanup (xfree
, var
);
2232 PARSER_RESULT (parser
)->line_offset
2233 = linespec_parse_variable (PARSER_STATE (parser
), var
);
2234 do_cleanups (cleanup
);
2236 /* If a line_offset wasn't found (VAR is the name of a user
2237 variable/function), then skip to normal symbol processing. */
2238 if (PARSER_RESULT (parser
)->line_offset
.sign
!= LINE_OFFSET_UNKNOWN
)
2240 /* Consume this token. */
2241 linespec_lexer_consume_token (parser
);
2243 goto convert_to_sals
;
2246 else if (token
.type
!= LSTOKEN_STRING
&& token
.type
!= LSTOKEN_NUMBER
)
2247 unexpected_linespec_error (parser
);
2249 /* Now we can recognize keywords. */
2250 parser
->keyword_ok
= 1;
2252 /* Shortcut: If the next token is not LSTOKEN_COLON, we know that
2253 this token cannot represent a filename. */
2254 token
= linespec_lexer_peek_token (parser
);
2256 if (token
.type
== LSTOKEN_COLON
)
2258 char *user_filename
;
2260 /* Get the current token again and extract the filename. */
2261 token
= linespec_lexer_lex_one (parser
);
2262 user_filename
= copy_token_string (token
);
2264 /* Check if the input is a filename. */
2265 TRY_CATCH (file_exception
, RETURN_MASK_ERROR
)
2267 PARSER_RESULT (parser
)->file_symtabs
2268 = symtabs_from_filename (user_filename
);
2271 if (file_exception
.reason
>= 0)
2273 /* Symtabs were found for the file. Record the filename. */
2274 PARSER_RESULT (parser
)->source_filename
= user_filename
;
2276 /* Get the next token. */
2277 token
= linespec_lexer_consume_token (parser
);
2279 /* This is LSTOKEN_COLON; consume it. */
2280 linespec_lexer_consume_token (parser
);
2284 /* No symtabs found -- discard user_filename. */
2285 xfree (user_filename
);
2287 /* A NULL entry means to use GLOBAL_DEFAULT_SYMTAB. */
2288 VEC_safe_push (symtab_ptr
, PARSER_RESULT (parser
)->file_symtabs
, NULL
);
2291 /* If the next token is not EOI, KEYWORD, or COMMA, issue an error. */
2292 else if (token
.type
!= LSTOKEN_EOI
&& token
.type
!= LSTOKEN_KEYWORD
2293 && token
.type
!= LSTOKEN_COMMA
)
2295 /* TOKEN is the _next_ token, not the one currently in the parser.
2296 Consuming the token will give the correct error message. */
2297 linespec_lexer_consume_token (parser
);
2298 unexpected_linespec_error (parser
);
2302 /* A NULL entry means to use GLOBAL_DEFAULT_SYMTAB. */
2303 VEC_safe_push (symtab_ptr
, PARSER_RESULT (parser
)->file_symtabs
, NULL
);
2306 /* Parse the rest of the linespec. */
2307 linespec_parse_basic (parser
);
2309 if (PARSER_RESULT (parser
)->function_symbols
== NULL
2310 && PARSER_RESULT (parser
)->labels
.label_symbols
== NULL
2311 && PARSER_RESULT (parser
)->line_offset
.sign
== LINE_OFFSET_UNKNOWN
2312 && PARSER_RESULT (parser
)->minimal_symbols
== NULL
)
2314 /* The linespec didn't parse. Re-throw the file exception if
2316 if (file_exception
.reason
< 0)
2317 throw_exception (file_exception
);
2319 /* Otherwise, the symbol is not found. */
2320 symbol_not_found_error (PARSER_RESULT (parser
)->function_name
,
2321 PARSER_RESULT (parser
)->source_filename
);
2326 /* Get the last token and record how much of the input was parsed,
2328 token
= linespec_lexer_lex_one (parser
);
2329 if (token
.type
!= LSTOKEN_EOI
&& token
.type
!= LSTOKEN_KEYWORD
)
2330 PARSER_STREAM (parser
) = LS_TOKEN_STOKEN (token
).ptr
;
2332 /* Convert the data in PARSER_RESULT to SALs. */
2333 values
= convert_linespec_to_sals (PARSER_STATE (parser
),
2334 PARSER_RESULT (parser
));
2340 /* A constructor for linespec_state. */
2343 linespec_state_constructor (struct linespec_state
*self
,
2344 int flags
, const struct language_defn
*language
,
2345 struct symtab
*default_symtab
,
2347 struct linespec_result
*canonical
)
2349 memset (self
, 0, sizeof (*self
));
2350 self
->language
= language
;
2351 self
->funfirstline
= (flags
& DECODE_LINE_FUNFIRSTLINE
) ? 1 : 0;
2352 self
->list_mode
= (flags
& DECODE_LINE_LIST_MODE
) ? 1 : 0;
2353 self
->default_symtab
= default_symtab
;
2354 self
->default_line
= default_line
;
2355 self
->canonical
= canonical
;
2356 self
->program_space
= current_program_space
;
2357 self
->addr_set
= htab_create_alloc (10, hash_address_entry
, eq_address_entry
,
2358 xfree
, xcalloc
, xfree
);
2361 /* Initialize a new linespec parser. */
2364 linespec_parser_new (linespec_parser
*parser
,
2365 int flags
, const struct language_defn
*language
,
2366 struct symtab
*default_symtab
,
2368 struct linespec_result
*canonical
)
2370 parser
->lexer
.current
.type
= LSTOKEN_CONSUMED
;
2371 memset (PARSER_RESULT (parser
), 0, sizeof (struct linespec
));
2372 PARSER_RESULT (parser
)->line_offset
.sign
= LINE_OFFSET_UNKNOWN
;
2373 linespec_state_constructor (PARSER_STATE (parser
), flags
, language
,
2374 default_symtab
, default_line
, canonical
);
2377 /* A destructor for linespec_state. */
2380 linespec_state_destructor (struct linespec_state
*self
)
2382 htab_delete (self
->addr_set
);
2385 /* Delete a linespec parser. */
2388 linespec_parser_delete (void *arg
)
2390 linespec_parser
*parser
= (linespec_parser
*) arg
;
2392 xfree ((char *) PARSER_RESULT (parser
)->expression
);
2393 xfree ((char *) PARSER_RESULT (parser
)->source_filename
);
2394 xfree ((char *) PARSER_RESULT (parser
)->label_name
);
2395 xfree ((char *) PARSER_RESULT (parser
)->function_name
);
2397 if (PARSER_RESULT (parser
)->file_symtabs
!= NULL
)
2398 VEC_free (symtab_ptr
, PARSER_RESULT (parser
)->file_symtabs
);
2400 if (PARSER_RESULT (parser
)->function_symbols
!= NULL
)
2401 VEC_free (symbolp
, PARSER_RESULT (parser
)->function_symbols
);
2403 if (PARSER_RESULT (parser
)->minimal_symbols
!= NULL
)
2404 VEC_free (bound_minimal_symbol_d
, PARSER_RESULT (parser
)->minimal_symbols
);
2406 if (PARSER_RESULT (parser
)->labels
.label_symbols
!= NULL
)
2407 VEC_free (symbolp
, PARSER_RESULT (parser
)->labels
.label_symbols
);
2409 if (PARSER_RESULT (parser
)->labels
.function_symbols
!= NULL
)
2410 VEC_free (symbolp
, PARSER_RESULT (parser
)->labels
.function_symbols
);
2412 linespec_state_destructor (PARSER_STATE (parser
));
2415 /* See linespec.h. */
2418 decode_line_full (char **argptr
, int flags
,
2419 struct symtab
*default_symtab
,
2420 int default_line
, struct linespec_result
*canonical
,
2421 const char *select_mode
,
2424 struct symtabs_and_lines result
;
2425 struct cleanup
*cleanups
;
2426 VEC (const_char_ptr
) *filters
= NULL
;
2427 linespec_parser parser
;
2428 struct linespec_state
*state
;
2429 const char *copy
, *orig
;
2431 gdb_assert (canonical
!= NULL
);
2432 /* The filter only makes sense for 'all'. */
2433 gdb_assert (filter
== NULL
|| select_mode
== multiple_symbols_all
);
2434 gdb_assert (select_mode
== NULL
2435 || select_mode
== multiple_symbols_all
2436 || select_mode
== multiple_symbols_ask
2437 || select_mode
== multiple_symbols_cancel
);
2438 gdb_assert ((flags
& DECODE_LINE_LIST_MODE
) == 0);
2440 linespec_parser_new (&parser
, flags
, current_language
, default_symtab
,
2441 default_line
, canonical
);
2442 cleanups
= make_cleanup (linespec_parser_delete
, &parser
);
2443 save_current_program_space ();
2445 orig
= copy
= *argptr
;
2446 result
= parse_linespec (&parser
, ©
);
2447 *argptr
+= copy
- orig
;
2448 state
= PARSER_STATE (&parser
);
2450 gdb_assert (result
.nelts
== 1 || canonical
->pre_expanded
);
2451 gdb_assert (canonical
->addr_string
!= NULL
);
2452 canonical
->pre_expanded
= 1;
2454 /* Arrange for allocated canonical names to be freed. */
2455 if (result
.nelts
> 0)
2459 make_cleanup (xfree
, state
->canonical_names
);
2460 for (i
= 0; i
< result
.nelts
; ++i
)
2462 gdb_assert (state
->canonical_names
[i
].suffix
!= NULL
);
2463 make_cleanup (xfree
, state
->canonical_names
[i
].suffix
);
2467 if (select_mode
== NULL
)
2469 if (ui_out_is_mi_like_p (interp_ui_out (top_level_interpreter ())))
2470 select_mode
= multiple_symbols_all
;
2472 select_mode
= multiple_symbols_select_mode ();
2475 if (select_mode
== multiple_symbols_all
)
2479 make_cleanup (VEC_cleanup (const_char_ptr
), &filters
);
2480 VEC_safe_push (const_char_ptr
, filters
, filter
);
2481 filter_results (state
, &result
, filters
);
2484 convert_results_to_lsals (state
, &result
);
2487 decode_line_2 (state
, &result
, select_mode
);
2489 do_cleanups (cleanups
);
2492 /* See linespec.h. */
2494 struct symtabs_and_lines
2495 decode_line_1 (char **argptr
, int flags
,
2496 struct symtab
*default_symtab
,
2499 struct symtabs_and_lines result
;
2500 linespec_parser parser
;
2501 struct cleanup
*cleanups
;
2502 const char *copy
, *orig
;
2504 linespec_parser_new (&parser
, flags
, current_language
, default_symtab
,
2505 default_line
, NULL
);
2506 cleanups
= make_cleanup (linespec_parser_delete
, &parser
);
2507 save_current_program_space ();
2509 orig
= copy
= *argptr
;
2510 result
= parse_linespec (&parser
, ©
);
2511 *argptr
+= copy
- orig
;
2513 do_cleanups (cleanups
);
2517 /* See linespec.h. */
2519 struct symtabs_and_lines
2520 decode_line_with_current_source (char *string
, int flags
)
2522 struct symtabs_and_lines sals
;
2523 struct symtab_and_line cursal
;
2526 error (_("Empty line specification."));
2528 /* We use whatever is set as the current source line. We do not try
2529 and get a default source symtab+line or it will recursively call us! */
2530 cursal
= get_current_source_symtab_and_line ();
2532 sals
= decode_line_1 (&string
, flags
,
2533 cursal
.symtab
, cursal
.line
);
2536 error (_("Junk at end of line specification: %s"), string
);
2540 /* See linespec.h. */
2542 struct symtabs_and_lines
2543 decode_line_with_last_displayed (char *string
, int flags
)
2545 struct symtabs_and_lines sals
;
2548 error (_("Empty line specification."));
2550 if (last_displayed_sal_is_valid ())
2551 sals
= decode_line_1 (&string
, flags
,
2552 get_last_displayed_symtab (),
2553 get_last_displayed_line ());
2555 sals
= decode_line_1 (&string
, flags
, (struct symtab
*) NULL
, 0);
2558 error (_("Junk at end of line specification: %s"), string
);
2564 /* First, some functions to initialize stuff at the beggining of the
2568 initialize_defaults (struct symtab
**default_symtab
, int *default_line
)
2570 if (*default_symtab
== 0)
2572 /* Use whatever we have for the default source line. We don't use
2573 get_current_or_default_symtab_and_line as it can recurse and call
2575 struct symtab_and_line cursal
=
2576 get_current_source_symtab_and_line ();
2578 *default_symtab
= cursal
.symtab
;
2579 *default_line
= cursal
.line
;
2585 /* Evaluate the expression pointed to by EXP_PTR into a CORE_ADDR,
2586 advancing EXP_PTR past any parsed text. */
2589 linespec_expression_to_pc (const char **exp_ptr
)
2591 if (current_program_space
->executing_startup
)
2592 /* The error message doesn't really matter, because this case
2593 should only hit during breakpoint reset. */
2594 throw_error (NOT_FOUND_ERROR
, _("cannot evaluate expressions while "
2595 "program space is in startup"));
2598 return value_as_address (parse_to_comma_and_eval (exp_ptr
));
2603 /* Here's where we recognise an Objective-C Selector. An Objective C
2604 selector may be implemented by more than one class, therefore it
2605 may represent more than one method/function. This gives us a
2606 situation somewhat analogous to C++ overloading. If there's more
2607 than one method that could represent the selector, then use some of
2608 the existing C++ code to let the user choose one. */
2610 static struct symtabs_and_lines
2611 decode_objc (struct linespec_state
*self
, linespec_p ls
, const char **argptr
)
2613 struct collect_info info
;
2614 VEC (const_char_ptr
) *symbol_names
= NULL
;
2615 struct symtabs_and_lines values
;
2616 const char *new_argptr
;
2617 struct cleanup
*cleanup
= make_cleanup (VEC_cleanup (const_char_ptr
),
2621 info
.file_symtabs
= NULL
;
2622 VEC_safe_push (symtab_ptr
, info
.file_symtabs
, NULL
);
2623 make_cleanup (VEC_cleanup (symtab_ptr
), &info
.file_symtabs
);
2624 info
.result
.symbols
= NULL
;
2625 info
.result
.minimal_symbols
= NULL
;
2629 new_argptr
= find_imps (*argptr
, &symbol_names
);
2630 if (VEC_empty (const_char_ptr
, symbol_names
))
2632 do_cleanups (cleanup
);
2636 add_all_symbol_names_from_pspace (&info
, NULL
, symbol_names
);
2638 if (!VEC_empty (symbolp
, info
.result
.symbols
)
2639 || !VEC_empty (bound_minimal_symbol_d
, info
.result
.minimal_symbols
))
2643 saved_arg
= alloca (new_argptr
- *argptr
+ 1);
2644 memcpy (saved_arg
, *argptr
, new_argptr
- *argptr
);
2645 saved_arg
[new_argptr
- *argptr
] = '\0';
2647 ls
->function_name
= xstrdup (saved_arg
);
2648 ls
->function_symbols
= info
.result
.symbols
;
2649 ls
->minimal_symbols
= info
.result
.minimal_symbols
;
2650 values
= convert_linespec_to_sals (self
, ls
);
2652 if (self
->canonical
)
2654 self
->canonical
->pre_expanded
= 1;
2655 if (ls
->source_filename
)
2656 self
->canonical
->addr_string
2657 = xstrprintf ("%s:%s", ls
->source_filename
, saved_arg
);
2659 self
->canonical
->addr_string
= xstrdup (saved_arg
);
2663 *argptr
= new_argptr
;
2665 do_cleanups (cleanup
);
2670 /* An instance of this type is used when collecting prefix symbols for
2673 struct decode_compound_collector
2675 /* The result vector. */
2676 VEC (symbolp
) *symbols
;
2678 /* A hash table of all symbols we found. We use this to avoid
2679 adding any symbol more than once. */
2683 /* A callback for iterate_over_symbols that is used by
2684 lookup_prefix_sym to collect type symbols. */
2687 collect_one_symbol (struct symbol
*sym
, void *d
)
2689 struct decode_compound_collector
*collector
= d
;
2693 if (SYMBOL_CLASS (sym
) != LOC_TYPEDEF
)
2694 return 1; /* Continue iterating. */
2696 t
= SYMBOL_TYPE (sym
);
2698 if (TYPE_CODE (t
) != TYPE_CODE_STRUCT
2699 && TYPE_CODE (t
) != TYPE_CODE_UNION
2700 && TYPE_CODE (t
) != TYPE_CODE_NAMESPACE
)
2701 return 1; /* Continue iterating. */
2703 slot
= htab_find_slot (collector
->unique_syms
, sym
, INSERT
);
2707 VEC_safe_push (symbolp
, collector
->symbols
, sym
);
2710 return 1; /* Continue iterating. */
2713 /* Return any symbols corresponding to CLASS_NAME in FILE_SYMTABS. */
2715 static VEC (symbolp
) *
2716 lookup_prefix_sym (struct linespec_state
*state
, VEC (symtab_ptr
) *file_symtabs
,
2717 const char *class_name
)
2721 struct decode_compound_collector collector
;
2722 struct cleanup
*outer
;
2723 struct cleanup
*cleanup
;
2725 collector
.symbols
= NULL
;
2726 outer
= make_cleanup (VEC_cleanup (symbolp
), &collector
.symbols
);
2728 collector
.unique_syms
= htab_create_alloc (1, htab_hash_pointer
,
2729 htab_eq_pointer
, NULL
,
2731 cleanup
= make_cleanup_htab_delete (collector
.unique_syms
);
2733 for (ix
= 0; VEC_iterate (symtab_ptr
, file_symtabs
, ix
, elt
); ++ix
)
2737 iterate_over_all_matching_symtabs (state
, class_name
, STRUCT_DOMAIN
,
2738 collect_one_symbol
, &collector
,
2740 iterate_over_all_matching_symtabs (state
, class_name
, VAR_DOMAIN
,
2741 collect_one_symbol
, &collector
,
2746 /* Program spaces that are executing startup should have
2747 been filtered out earlier. */
2748 gdb_assert (!SYMTAB_PSPACE (elt
)->executing_startup
);
2749 set_current_program_space (SYMTAB_PSPACE (elt
));
2750 iterate_over_file_blocks (elt
, class_name
, STRUCT_DOMAIN
,
2751 collect_one_symbol
, &collector
);
2752 iterate_over_file_blocks (elt
, class_name
, VAR_DOMAIN
,
2753 collect_one_symbol
, &collector
);
2757 do_cleanups (cleanup
);
2758 discard_cleanups (outer
);
2759 return collector
.symbols
;
2762 /* A qsort comparison function for symbols. The resulting order does
2763 not actually matter; we just need to be able to sort them so that
2764 symbols with the same program space end up next to each other. */
2767 compare_symbols (const void *a
, const void *b
)
2769 struct symbol
* const *sa
= a
;
2770 struct symbol
* const *sb
= b
;
2773 uia
= (uintptr_t) SYMTAB_PSPACE (SYMBOL_SYMTAB (*sa
));
2774 uib
= (uintptr_t) SYMTAB_PSPACE (SYMBOL_SYMTAB (*sb
));
2781 uia
= (uintptr_t) *sa
;
2782 uib
= (uintptr_t) *sb
;
2792 /* Like compare_symbols but for minimal symbols. */
2795 compare_msymbols (const void *a
, const void *b
)
2797 const struct bound_minimal_symbol
*sa
= a
;
2798 const struct bound_minimal_symbol
*sb
= b
;
2801 uia
= (uintptr_t) sa
->objfile
->pspace
;
2802 uib
= (uintptr_t) sa
->objfile
->pspace
;
2809 uia
= (uintptr_t) sa
->minsym
;
2810 uib
= (uintptr_t) sb
->minsym
;
2820 /* Look for all the matching instances of each symbol in NAMES. Only
2821 instances from PSPACE are considered; other program spaces are
2822 handled by our caller. If PSPACE is NULL, then all program spaces
2823 are considered. Results are stored into INFO. */
2826 add_all_symbol_names_from_pspace (struct collect_info
*info
,
2827 struct program_space
*pspace
,
2828 VEC (const_char_ptr
) *names
)
2833 for (ix
= 0; VEC_iterate (const_char_ptr
, names
, ix
, iter
); ++ix
)
2834 add_matching_symbols_to_info (iter
, info
, pspace
);
2838 find_superclass_methods (VEC (typep
) *superclasses
,
2840 VEC (const_char_ptr
) **result_names
)
2842 int old_len
= VEC_length (const_char_ptr
, *result_names
);
2843 VEC (typep
) *iter_classes
;
2844 struct cleanup
*cleanup
= make_cleanup (null_cleanup
, NULL
);
2846 iter_classes
= superclasses
;
2849 VEC (typep
) *new_supers
= NULL
;
2853 make_cleanup (VEC_cleanup (typep
), &new_supers
);
2854 for (ix
= 0; VEC_iterate (typep
, iter_classes
, ix
, t
); ++ix
)
2855 find_methods (t
, name
, result_names
, &new_supers
);
2857 if (VEC_length (const_char_ptr
, *result_names
) != old_len
2858 || VEC_empty (typep
, new_supers
))
2861 iter_classes
= new_supers
;
2864 do_cleanups (cleanup
);
2867 /* This finds the method METHOD_NAME in the class CLASS_NAME whose type is
2868 given by one of the symbols in SYM_CLASSES. Matches are returned
2869 in SYMBOLS (for debug symbols) and MINSYMS (for minimal symbols). */
2872 find_method (struct linespec_state
*self
, VEC (symtab_ptr
) *file_symtabs
,
2873 const char *class_name
, const char *method_name
,
2874 VEC (symbolp
) *sym_classes
, VEC (symbolp
) **symbols
,
2875 VEC (bound_minimal_symbol_d
) **minsyms
)
2878 struct cleanup
*cleanup
= make_cleanup (null_cleanup
, NULL
);
2880 int last_result_len
;
2881 VEC (typep
) *superclass_vec
;
2882 VEC (const_char_ptr
) *result_names
;
2883 struct collect_info info
;
2885 /* Sort symbols so that symbols with the same program space are next
2887 qsort (VEC_address (symbolp
, sym_classes
),
2888 VEC_length (symbolp
, sym_classes
),
2893 info
.file_symtabs
= file_symtabs
;
2894 info
.result
.symbols
= NULL
;
2895 info
.result
.minimal_symbols
= NULL
;
2897 /* Iterate over all the types, looking for the names of existing
2898 methods matching METHOD_NAME. If we cannot find a direct method in a
2899 given program space, then we consider inherited methods; this is
2900 not ideal (ideal would be to respect C++ hiding rules), but it
2901 seems good enough and is what GDB has historically done. We only
2902 need to collect the names because later we find all symbols with
2903 those names. This loop is written in a somewhat funny way
2904 because we collect data across the program space before deciding
2906 superclass_vec
= NULL
;
2907 make_cleanup (VEC_cleanup (typep
), &superclass_vec
);
2908 result_names
= NULL
;
2909 make_cleanup (VEC_cleanup (const_char_ptr
), &result_names
);
2910 last_result_len
= 0;
2911 for (ix
= 0; VEC_iterate (symbolp
, sym_classes
, ix
, sym
); ++ix
)
2914 struct program_space
*pspace
;
2916 /* Program spaces that are executing startup should have
2917 been filtered out earlier. */
2918 gdb_assert (!SYMTAB_PSPACE (SYMBOL_SYMTAB (sym
))->executing_startup
);
2919 pspace
= SYMTAB_PSPACE (SYMBOL_SYMTAB (sym
));
2920 set_current_program_space (pspace
);
2921 t
= check_typedef (SYMBOL_TYPE (sym
));
2922 find_methods (t
, method_name
, &result_names
, &superclass_vec
);
2924 /* Handle all items from a single program space at once; and be
2925 sure not to miss the last batch. */
2926 if (ix
== VEC_length (symbolp
, sym_classes
) - 1
2928 != SYMTAB_PSPACE (SYMBOL_SYMTAB (VEC_index (symbolp
, sym_classes
,
2931 /* If we did not find a direct implementation anywhere in
2932 this program space, consider superclasses. */
2933 if (VEC_length (const_char_ptr
, result_names
) == last_result_len
)
2934 find_superclass_methods (superclass_vec
, method_name
,
2937 /* We have a list of candidate symbol names, so now we
2938 iterate over the symbol tables looking for all
2939 matches in this pspace. */
2940 add_all_symbol_names_from_pspace (&info
, pspace
, result_names
);
2942 VEC_truncate (typep
, superclass_vec
, 0);
2943 last_result_len
= VEC_length (const_char_ptr
, result_names
);
2947 if (!VEC_empty (symbolp
, info
.result
.symbols
)
2948 || !VEC_empty (bound_minimal_symbol_d
, info
.result
.minimal_symbols
))
2950 *symbols
= info
.result
.symbols
;
2951 *minsyms
= info
.result
.minimal_symbols
;
2952 do_cleanups (cleanup
);
2956 /* Throw an NOT_FOUND_ERROR. This will be caught by the caller
2957 and other attempts to locate the symbol will be made. */
2958 throw_error (NOT_FOUND_ERROR
, _("see caller, this text doesn't matter"));
2963 /* This object is used when collecting all matching symtabs. */
2965 struct symtab_collector
2967 /* The result vector of symtabs. */
2968 VEC (symtab_ptr
) *symtabs
;
2970 /* This is used to ensure the symtabs are unique. */
2971 htab_t symtab_table
;
2974 /* Callback for iterate_over_symtabs. */
2977 add_symtabs_to_list (struct symtab
*symtab
, void *d
)
2979 struct symtab_collector
*data
= d
;
2982 slot
= htab_find_slot (data
->symtab_table
, symtab
, INSERT
);
2986 VEC_safe_push (symtab_ptr
, data
->symtabs
, symtab
);
2992 /* Given a file name, return a VEC of all matching symtabs. */
2994 static VEC (symtab_ptr
) *
2995 collect_symtabs_from_filename (const char *file
)
2997 struct symtab_collector collector
;
2998 struct cleanup
*cleanups
;
2999 struct program_space
*pspace
;
3001 collector
.symtabs
= NULL
;
3002 collector
.symtab_table
= htab_create (1, htab_hash_pointer
, htab_eq_pointer
,
3004 cleanups
= make_cleanup_htab_delete (collector
.symtab_table
);
3006 /* Find that file's data. */
3007 ALL_PSPACES (pspace
)
3009 if (pspace
->executing_startup
)
3012 set_current_program_space (pspace
);
3013 iterate_over_symtabs (file
, add_symtabs_to_list
, &collector
);
3016 do_cleanups (cleanups
);
3017 return collector
.symtabs
;
3020 /* Return all the symtabs associated to the FILENAME. */
3022 static VEC (symtab_ptr
) *
3023 symtabs_from_filename (const char *filename
)
3025 VEC (symtab_ptr
) *result
;
3027 result
= collect_symtabs_from_filename (filename
);
3029 if (VEC_empty (symtab_ptr
, result
))
3031 if (!have_full_symbols () && !have_partial_symbols ())
3032 throw_error (NOT_FOUND_ERROR
,
3033 _("No symbol table is loaded. "
3034 "Use the \"file\" command."));
3035 throw_error (NOT_FOUND_ERROR
, _("No source file named %s."), filename
);
3041 /* Look up a function symbol named NAME in symtabs FILE_SYMTABS. Matching
3042 debug symbols are returned in SYMBOLS. Matching minimal symbols are
3043 returned in MINSYMS. */
3046 find_function_symbols (struct linespec_state
*state
,
3047 VEC (symtab_ptr
) *file_symtabs
, const char *name
,
3048 VEC (symbolp
) **symbols
,
3049 VEC (bound_minimal_symbol_d
) **minsyms
)
3051 struct collect_info info
;
3052 VEC (const_char_ptr
) *symbol_names
= NULL
;
3053 struct cleanup
*cleanup
= make_cleanup (VEC_cleanup (const_char_ptr
),
3057 info
.result
.symbols
= NULL
;
3058 info
.result
.minimal_symbols
= NULL
;
3059 info
.file_symtabs
= file_symtabs
;
3061 /* Try NAME as an Objective-C selector. */
3062 find_imps (name
, &symbol_names
);
3063 if (!VEC_empty (const_char_ptr
, symbol_names
))
3064 add_all_symbol_names_from_pspace (&info
, NULL
, symbol_names
);
3066 add_matching_symbols_to_info (name
, &info
, NULL
);
3068 do_cleanups (cleanup
);
3070 if (VEC_empty (symbolp
, info
.result
.symbols
))
3072 VEC_free (symbolp
, info
.result
.symbols
);
3076 *symbols
= info
.result
.symbols
;
3078 if (VEC_empty (bound_minimal_symbol_d
, info
.result
.minimal_symbols
))
3080 VEC_free (bound_minimal_symbol_d
, info
.result
.minimal_symbols
);
3084 *minsyms
= info
.result
.minimal_symbols
;
3087 /* Find all symbols named NAME in FILE_SYMTABS, returning debug symbols
3088 in SYMBOLS and minimal symbols in MINSYMS. */
3091 find_linespec_symbols (struct linespec_state
*state
,
3092 VEC (symtab_ptr
) *file_symtabs
,
3094 VEC (symbolp
) **symbols
,
3095 VEC (bound_minimal_symbol_d
) **minsyms
)
3097 struct cleanup
*cleanup
;
3099 const char *lookup_name
;
3100 volatile struct gdb_exception except
;
3102 cleanup
= demangle_for_lookup (name
, state
->language
->la_language
,
3104 if (state
->language
->la_language
== language_ada
)
3106 /* In Ada, the symbol lookups are performed using the encoded
3107 name rather than the demangled name. */
3108 lookup_name
= ada_name_for_lookup (name
);
3109 make_cleanup (xfree
, (void *) lookup_name
);
3112 canon
= cp_canonicalize_string_no_typedefs (lookup_name
);
3115 lookup_name
= canon
;
3116 make_cleanup (xfree
, canon
);
3119 /* It's important to not call expand_symtabs_matching unnecessarily
3120 as it can really slow things down (by unnecessarily expanding
3121 potentially 1000s of symtabs, which when debugging some apps can
3122 cost 100s of seconds). Avoid this to some extent by *first* calling
3123 find_function_symbols, and only if that doesn't find anything
3124 *then* call find_method. This handles two important cases:
3125 1) break (anonymous namespace)::foo
3126 2) break class::method where method is in class (and not a baseclass) */
3128 find_function_symbols (state
, file_symtabs
, lookup_name
,
3131 /* If we were unable to locate a symbol of the same name, try dividing
3132 the name into class and method names and searching the class and its
3134 if (VEC_empty (symbolp
, *symbols
)
3135 && VEC_empty (bound_minimal_symbol_d
, *minsyms
))
3137 char *klass
, *method
;
3138 const char *last
, *p
, *scope_op
;
3139 VEC (symbolp
) *classes
;
3141 /* See if we can find a scope operator and break this symbol
3142 name into namespaces${SCOPE_OPERATOR}class_name and method_name. */
3144 p
= find_toplevel_string (lookup_name
, scope_op
);
3147 /* No C++ scope operator. Try Java. */
3149 p
= find_toplevel_string (lookup_name
, scope_op
);
3156 p
= find_toplevel_string (p
+ strlen (scope_op
), scope_op
);
3159 /* If no scope operator was found, there is nothing more we can do;
3160 we already attempted to lookup the entire name as a symbol
3164 do_cleanups (cleanup
);
3168 /* LOOKUP_NAME points to the class name.
3169 LAST points to the method name. */
3170 klass
= xmalloc ((last
- lookup_name
+ 1) * sizeof (char));
3171 make_cleanup (xfree
, klass
);
3172 strncpy (klass
, lookup_name
, last
- lookup_name
);
3173 klass
[last
- lookup_name
] = '\0';
3175 /* Skip past the scope operator. */
3176 last
+= strlen (scope_op
);
3177 method
= xmalloc ((strlen (last
) + 1) * sizeof (char));
3178 make_cleanup (xfree
, method
);
3179 strcpy (method
, last
);
3181 /* Find a list of classes named KLASS. */
3182 classes
= lookup_prefix_sym (state
, file_symtabs
, klass
);
3183 make_cleanup (VEC_cleanup (symbolp
), &classes
);
3185 if (!VEC_empty (symbolp
, classes
))
3187 /* Now locate a list of suitable methods named METHOD. */
3188 TRY_CATCH (except
, RETURN_MASK_ERROR
)
3190 find_method (state
, file_symtabs
, klass
, method
, classes
,
3194 /* If successful, we're done. If NOT_FOUND_ERROR
3195 was not thrown, rethrow the exception that we did get. */
3196 if (except
.reason
< 0 && except
.error
!= NOT_FOUND_ERROR
)
3197 throw_exception (except
);
3201 do_cleanups (cleanup
);
3204 /* Return all labels named NAME in FUNCTION_SYMBOLS. Return the
3205 actual function symbol in which the label was found in LABEL_FUNC_RET. */
3207 static VEC (symbolp
) *
3208 find_label_symbols (struct linespec_state
*self
,
3209 VEC (symbolp
) *function_symbols
,
3210 VEC (symbolp
) **label_funcs_ret
, const char *name
)
3213 struct block
*block
;
3215 struct symbol
*fn_sym
;
3216 VEC (symbolp
) *result
= NULL
;
3218 if (function_symbols
== NULL
)
3220 set_current_program_space (self
->program_space
);
3221 block
= get_current_search_block ();
3224 block
&& !BLOCK_FUNCTION (block
);
3225 block
= BLOCK_SUPERBLOCK (block
))
3229 fn_sym
= BLOCK_FUNCTION (block
);
3231 sym
= lookup_symbol (name
, block
, LABEL_DOMAIN
, 0);
3235 VEC_safe_push (symbolp
, result
, sym
);
3236 VEC_safe_push (symbolp
, *label_funcs_ret
, fn_sym
);
3242 VEC_iterate (symbolp
, function_symbols
, ix
, fn_sym
); ++ix
)
3244 set_current_program_space (SYMTAB_PSPACE (SYMBOL_SYMTAB (fn_sym
)));
3245 block
= SYMBOL_BLOCK_VALUE (fn_sym
);
3246 sym
= lookup_symbol (name
, block
, LABEL_DOMAIN
, 0);
3250 VEC_safe_push (symbolp
, result
, sym
);
3251 VEC_safe_push (symbolp
, *label_funcs_ret
, fn_sym
);
3261 /* A helper for create_sals_line_offset that handles the 'list_mode' case. */
3264 decode_digits_list_mode (struct linespec_state
*self
,
3266 struct symtabs_and_lines
*values
,
3267 struct symtab_and_line val
)
3272 gdb_assert (self
->list_mode
);
3274 for (ix
= 0; VEC_iterate (symtab_ptr
, ls
->file_symtabs
, ix
, elt
);
3277 /* The logic above should ensure this. */
3278 gdb_assert (elt
!= NULL
);
3280 set_current_program_space (SYMTAB_PSPACE (elt
));
3282 /* Simplistic search just for the list command. */
3283 val
.symtab
= find_line_symtab (elt
, val
.line
, NULL
, NULL
);
3284 if (val
.symtab
== NULL
)
3286 val
.pspace
= SYMTAB_PSPACE (elt
);
3288 val
.explicit_line
= 1;
3290 add_sal_to_sals (self
, values
, &val
, NULL
, 0);
3294 /* A helper for create_sals_line_offset that iterates over the symtabs,
3295 adding lines to the VEC. */
3298 decode_digits_ordinary (struct linespec_state
*self
,
3301 struct symtabs_and_lines
*sals
,
3302 struct linetable_entry
**best_entry
)
3307 for (ix
= 0; VEC_iterate (symtab_ptr
, ls
->file_symtabs
, ix
, elt
); ++ix
)
3310 VEC (CORE_ADDR
) *pcs
;
3313 /* The logic above should ensure this. */
3314 gdb_assert (elt
!= NULL
);
3316 set_current_program_space (SYMTAB_PSPACE (elt
));
3318 pcs
= find_pcs_for_symtab_line (elt
, line
, best_entry
);
3319 for (i
= 0; VEC_iterate (CORE_ADDR
, pcs
, i
, pc
); ++i
)
3321 struct symtab_and_line sal
;
3324 sal
.pspace
= SYMTAB_PSPACE (elt
);
3328 add_sal_to_sals_basic (sals
, &sal
);
3331 VEC_free (CORE_ADDR
, pcs
);
3337 /* Return the line offset represented by VARIABLE. */
3339 static struct line_offset
3340 linespec_parse_variable (struct linespec_state
*self
, const char *variable
)
3344 struct line_offset offset
= {0, LINE_OFFSET_NONE
};
3346 p
= (variable
[1] == '$') ? variable
+ 2 : variable
+ 1;
3349 while (*p
>= '0' && *p
<= '9')
3351 if (!*p
) /* Reached end of token without hitting non-digit. */
3353 /* We have a value history reference. */
3354 struct value
*val_history
;
3356 sscanf ((variable
[1] == '$') ? variable
+ 2 : variable
+ 1, "%d", &index
);
3358 = access_value_history ((variable
[1] == '$') ? -index
: index
);
3359 if (TYPE_CODE (value_type (val_history
)) != TYPE_CODE_INT
)
3360 error (_("History values used in line "
3361 "specs must have integer values."));
3362 offset
.offset
= value_as_long (val_history
);
3366 /* Not all digits -- may be user variable/function or a
3367 convenience variable. */
3369 struct internalvar
*ivar
;
3371 /* Try it as a convenience variable. If it is not a convenience
3372 variable, return and allow normal symbol lookup to occur. */
3373 ivar
= lookup_only_internalvar (variable
+ 1);
3375 /* No internal variable with that name. Mark the offset
3376 as unknown to allow the name to be looked up as a symbol. */
3377 offset
.sign
= LINE_OFFSET_UNKNOWN
;
3380 /* We found a valid variable name. If it is not an integer,
3382 if (!get_internalvar_integer (ivar
, &valx
))
3383 error (_("Convenience variables used in line "
3384 "specs must have integer values."));
3386 offset
.offset
= valx
;
3394 /* A callback used to possibly add a symbol to the results. */
3397 collect_symbols (struct symbol
*sym
, void *data
)
3399 struct collect_info
*info
= data
;
3401 /* In list mode, add all matching symbols, regardless of class.
3402 This allows the user to type "list a_global_variable". */
3403 if (SYMBOL_CLASS (sym
) == LOC_BLOCK
|| info
->state
->list_mode
)
3404 VEC_safe_push (symbolp
, info
->result
.symbols
, sym
);
3405 return 1; /* Continue iterating. */
3408 /* We've found a minimal symbol MSYMBOL in OBJFILE to associate with our
3409 linespec; return the SAL in RESULT. */
3412 minsym_found (struct linespec_state
*self
, struct objfile
*objfile
,
3413 struct minimal_symbol
*msymbol
,
3414 struct symtabs_and_lines
*result
)
3416 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
3418 struct symtab_and_line sal
;
3420 sal
= find_pc_sect_line (SYMBOL_VALUE_ADDRESS (msymbol
),
3421 (struct obj_section
*) 0, 0);
3422 sal
.section
= SYMBOL_OBJ_SECTION (objfile
, msymbol
);
3424 /* The minimal symbol might point to a function descriptor;
3425 resolve it to the actual code address instead. */
3426 pc
= gdbarch_convert_from_func_ptr_addr (gdbarch
, sal
.pc
, ¤t_target
);
3428 sal
= find_pc_sect_line (pc
, NULL
, 0);
3430 if (self
->funfirstline
)
3431 skip_prologue_sal (&sal
);
3433 if (maybe_add_address (self
->addr_set
, objfile
->pspace
, sal
.pc
))
3434 add_sal_to_sals (self
, result
, &sal
, SYMBOL_NATURAL_NAME (msymbol
), 0);
3437 /* A helper struct to pass some data through
3438 iterate_over_minimal_symbols. */
3440 struct collect_minsyms
3442 /* The objfile we're examining. */
3443 struct objfile
*objfile
;
3445 /* The funfirstline setting from the initial call. */
3448 /* The list_mode setting from the initial call. */
3451 /* The resulting symbols. */
3452 VEC (bound_minimal_symbol_d
) *msyms
;
3455 /* A helper function to classify a minimal_symbol_type according to
3459 classify_mtype (enum minimal_symbol_type t
)
3466 /* Intermediate priority. */
3469 case mst_solib_trampoline
:
3470 /* Lowest priority. */
3474 /* Highest priority. */
3479 /* Callback for qsort that sorts symbols by priority. */
3482 compare_msyms (const void *a
, const void *b
)
3484 const bound_minimal_symbol_d
*moa
= a
;
3485 const bound_minimal_symbol_d
*mob
= b
;
3486 enum minimal_symbol_type ta
= MSYMBOL_TYPE (moa
->minsym
);
3487 enum minimal_symbol_type tb
= MSYMBOL_TYPE (mob
->minsym
);
3489 return classify_mtype (ta
) - classify_mtype (tb
);
3492 /* Callback for iterate_over_minimal_symbols that adds the symbol to
3496 add_minsym (struct minimal_symbol
*minsym
, void *d
)
3498 struct collect_minsyms
*info
= d
;
3499 bound_minimal_symbol_d mo
;
3501 /* Exclude data symbols when looking for breakpoint locations. */
3502 if (!info
->list_mode
)
3503 switch (minsym
->type
)
3505 case mst_slot_got_plt
:
3512 /* Make sure this minsym is not a function descriptor
3513 before we decide to discard it. */
3514 struct gdbarch
*gdbarch
= get_objfile_arch (info
->objfile
);
3515 CORE_ADDR addr
= gdbarch_convert_from_func_ptr_addr
3516 (gdbarch
, SYMBOL_VALUE_ADDRESS (minsym
),
3519 if (addr
== SYMBOL_VALUE_ADDRESS (minsym
))
3525 mo
.objfile
= info
->objfile
;
3526 VEC_safe_push (bound_minimal_symbol_d
, info
->msyms
, &mo
);
3529 /* Search minimal symbols in all objfiles for NAME. If SEARCH_PSPACE
3530 is not NULL, the search is restricted to just that program
3534 search_minsyms_for_name (struct collect_info
*info
, const char *name
,
3535 struct program_space
*search_pspace
)
3537 struct objfile
*objfile
;
3538 struct program_space
*pspace
;
3540 ALL_PSPACES (pspace
)
3542 struct collect_minsyms local
;
3543 struct cleanup
*cleanup
;
3545 if (search_pspace
!= NULL
&& search_pspace
!= pspace
)
3547 if (pspace
->executing_startup
)
3550 set_current_program_space (pspace
);
3552 memset (&local
, 0, sizeof (local
));
3553 local
.funfirstline
= info
->state
->funfirstline
;
3554 local
.list_mode
= info
->state
->list_mode
;
3556 cleanup
= make_cleanup (VEC_cleanup (bound_minimal_symbol_d
),
3559 ALL_OBJFILES (objfile
)
3561 local
.objfile
= objfile
;
3562 iterate_over_minimal_symbols (objfile
, name
, add_minsym
, &local
);
3565 if (!VEC_empty (bound_minimal_symbol_d
, local
.msyms
))
3569 bound_minimal_symbol_d
*item
;
3571 qsort (VEC_address (bound_minimal_symbol_d
, local
.msyms
),
3572 VEC_length (bound_minimal_symbol_d
, local
.msyms
),
3573 sizeof (bound_minimal_symbol_d
),
3576 /* Now the minsyms are in classification order. So, we walk
3577 over them and process just the minsyms with the same
3578 classification as the very first minsym in the list. */
3579 item
= VEC_index (bound_minimal_symbol_d
, local
.msyms
, 0);
3580 classification
= classify_mtype (MSYMBOL_TYPE (item
->minsym
));
3583 VEC_iterate (bound_minimal_symbol_d
, local
.msyms
, ix
, item
);
3586 if (classify_mtype (MSYMBOL_TYPE (item
->minsym
)) != classification
)
3589 VEC_safe_push (bound_minimal_symbol_d
,
3590 info
->result
.minimal_symbols
, item
);
3594 do_cleanups (cleanup
);
3598 /* A helper function to add all symbols matching NAME to INFO. If
3599 PSPACE is not NULL, the search is restricted to just that program
3603 add_matching_symbols_to_info (const char *name
,
3604 struct collect_info
*info
,
3605 struct program_space
*pspace
)
3610 for (ix
= 0; VEC_iterate (symtab_ptr
, info
->file_symtabs
, ix
, elt
); ++ix
)
3614 iterate_over_all_matching_symtabs (info
->state
, name
, VAR_DOMAIN
,
3615 collect_symbols
, info
,
3617 search_minsyms_for_name (info
, name
, pspace
);
3619 else if (pspace
== NULL
|| pspace
== SYMTAB_PSPACE (elt
))
3621 /* Program spaces that are executing startup should have
3622 been filtered out earlier. */
3623 gdb_assert (!SYMTAB_PSPACE (elt
)->executing_startup
);
3624 set_current_program_space (SYMTAB_PSPACE (elt
));
3625 iterate_over_file_blocks (elt
, name
, VAR_DOMAIN
,
3626 collect_symbols
, info
);
3633 /* Now come some functions that are called from multiple places within
3637 symbol_to_sal (struct symtab_and_line
*result
,
3638 int funfirstline
, struct symbol
*sym
)
3640 if (SYMBOL_CLASS (sym
) == LOC_BLOCK
)
3642 *result
= find_function_start_sal (sym
, funfirstline
);
3647 if (SYMBOL_CLASS (sym
) == LOC_LABEL
&& SYMBOL_VALUE_ADDRESS (sym
) != 0)
3650 result
->symtab
= SYMBOL_SYMTAB (sym
);
3651 result
->line
= SYMBOL_LINE (sym
);
3652 result
->pc
= SYMBOL_VALUE_ADDRESS (sym
);
3653 result
->pspace
= SYMTAB_PSPACE (SYMBOL_SYMTAB (sym
));
3654 result
->explicit_pc
= 1;
3657 else if (funfirstline
)
3661 else if (SYMBOL_LINE (sym
) != 0)
3663 /* We know its line number. */
3665 result
->symtab
= SYMBOL_SYMTAB (sym
);
3666 result
->line
= SYMBOL_LINE (sym
);
3667 result
->pspace
= SYMTAB_PSPACE (SYMBOL_SYMTAB (sym
));
3675 /* See the comment in linespec.h. */
3678 init_linespec_result (struct linespec_result
*lr
)
3680 memset (lr
, 0, sizeof (*lr
));
3683 /* See the comment in linespec.h. */
3686 destroy_linespec_result (struct linespec_result
*ls
)
3689 struct linespec_sals
*lsal
;
3691 xfree (ls
->addr_string
);
3692 for (i
= 0; VEC_iterate (linespec_sals
, ls
->sals
, i
, lsal
); ++i
)
3694 xfree (lsal
->canonical
);
3695 xfree (lsal
->sals
.sals
);
3697 VEC_free (linespec_sals
, ls
->sals
);
3700 /* Cleanup function for a linespec_result. */
3703 cleanup_linespec_result (void *a
)
3705 destroy_linespec_result (a
);
3708 /* See the comment in linespec.h. */
3711 make_cleanup_destroy_linespec_result (struct linespec_result
*ls
)
3713 return make_cleanup (cleanup_linespec_result
, ls
);