1 /* Parser for linespec for the GNU debugger, GDB.
2 Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
3 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
4 Free Software Foundation, Inc.
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place - Suite 330,
21 Boston, MA 02111-1307, USA. */
32 #include "completer.h"
34 #include "parser-defs.h"
36 #include "objc-lang.h"
39 /* We share this one with symtab.c, but it is not exported widely. */
41 extern char *operator_chars (char *, char **);
43 /* Prototypes for local functions */
45 static void initialize_defaults (struct symtab
**default_symtab
,
48 static void set_flags (char *arg
, int *is_quoted
, char **paren_pointer
);
50 static struct symtabs_and_lines
decode_indirect (char **argptr
);
52 static char *locate_first_half (char **argptr
, int *is_quote_enclosed
);
54 static struct symtabs_and_lines
decode_objc (char **argptr
,
56 struct symtab
*file_symtab
,
60 static struct symtabs_and_lines
decode_compound (char **argptr
,
66 static struct symbol
*lookup_prefix_sym (char **argptr
, char *p
);
68 static struct symtabs_and_lines
find_method (int funfirstline
,
73 struct symbol
*sym_class
);
75 static int collect_methods (char *copy
, struct type
*t
,
76 struct symbol
**sym_arr
);
78 static NORETURN
void cplusplus_error (const char *name
,
80 ATTR_NORETURN
ATTR_FORMAT (printf
, 2, 3);
82 static int total_number_of_methods (struct type
*type
);
84 static int find_methods (struct type
*, char *, struct symbol
**);
86 static int add_matching_methods (int method_counter
, struct type
*t
,
87 struct symbol
**sym_arr
);
89 static int add_constructors (int method_counter
, struct type
*t
,
90 struct symbol
**sym_arr
);
92 static void build_canonical_line_spec (struct symtab_and_line
*,
95 static char *find_toplevel_char (char *s
, char c
);
97 static int is_objc_method_format (const char *s
);
99 static struct symtabs_and_lines
decode_line_2 (struct symbol
*[],
102 static struct symtab
*symtab_from_filename (char **argptr
,
103 char *p
, int is_quote_enclosed
,
107 symtabs_and_lines
decode_all_digits (char **argptr
,
108 struct symtab
*default_symtab
,
111 struct symtab
*file_symtab
,
114 static struct symtabs_and_lines
decode_dollar (char *copy
,
116 struct symtab
*default_symtab
,
118 struct symtab
*file_symtab
);
120 static struct symtabs_and_lines
decode_variable (char *copy
,
123 struct symtab
*file_symtab
,
127 symtabs_and_lines
symbol_found (int funfirstline
,
131 struct symtab
*file_symtab
,
132 struct symtab
*sym_symtab
);
135 symtabs_and_lines
minsym_found (int funfirstline
,
136 struct minimal_symbol
*msymbol
);
138 /* Helper functions. */
140 /* Issue a helpful hint on using the command completion feature on
141 single quoted demangled C++ symbols as part of the completion
145 cplusplus_error (const char *name
, const char *fmt
, ...)
147 struct ui_file
*tmp_stream
;
148 tmp_stream
= mem_fileopen ();
149 make_cleanup_ui_file_delete (tmp_stream
);
153 va_start (args
, fmt
);
154 vfprintf_unfiltered (tmp_stream
, fmt
, args
);
158 while (*name
== '\'')
160 fprintf_unfiltered (tmp_stream
,
161 ("Hint: try '%s<TAB> or '%s<ESC-?>\n"
162 "(Note leading single quote.)"),
164 error_stream (tmp_stream
);
167 /* Return the number of methods described for TYPE, including the
168 methods from types it derives from. This can't be done in the symbol
169 reader because the type of the baseclass might still be stubbed
170 when the definition of the derived class is parsed. */
173 total_number_of_methods (struct type
*type
)
178 CHECK_TYPEDEF (type
);
179 if (TYPE_CPLUS_SPECIFIC (type
) == NULL
)
181 count
= TYPE_NFN_FIELDS_TOTAL (type
);
183 for (n
= 0; n
< TYPE_N_BASECLASSES (type
); n
++)
184 count
+= total_number_of_methods (TYPE_BASECLASS (type
, n
));
189 /* Recursive helper function for decode_line_1.
190 Look for methods named NAME in type T.
191 Return number of matches.
192 Put matches in SYM_ARR, which should have been allocated with
193 a size of total_number_of_methods (T) * sizeof (struct symbol *).
194 Note that this function is g++ specific. */
197 find_methods (struct type
*t
, char *name
, struct symbol
**sym_arr
)
201 char *class_name
= type_name_no_tag (t
);
203 /* Ignore this class if it doesn't have a name. This is ugly, but
204 unless we figure out how to get the physname without the name of
205 the class, then the loop can't do any good. */
207 && (lookup_symbol (class_name
, (struct block
*) NULL
,
208 STRUCT_DOMAIN
, (int *) NULL
,
209 (struct symtab
**) NULL
)))
212 int name_len
= strlen (name
);
216 /* Loop over each method name. At this level, all overloads of a name
217 are counted as a single name. There is an inner loop which loops over
220 for (method_counter
= TYPE_NFN_FIELDS (t
) - 1;
224 char *method_name
= TYPE_FN_FIELDLIST_NAME (t
, method_counter
);
227 if (strncmp (method_name
, "__", 2) == 0 ||
228 strncmp (method_name
, "op", 2) == 0 ||
229 strncmp (method_name
, "type", 4) == 0)
231 if (cplus_demangle_opname (method_name
, dem_opname
, DMGL_ANSI
))
232 method_name
= dem_opname
;
233 else if (cplus_demangle_opname (method_name
, dem_opname
, 0))
234 method_name
= dem_opname
;
237 if (strcmp_iw (name
, method_name
) == 0)
238 /* Find all the overloaded methods with that name. */
239 i1
+= add_matching_methods (method_counter
, t
,
241 else if (strncmp (class_name
, name
, name_len
) == 0
242 && (class_name
[name_len
] == '\0'
243 || class_name
[name_len
] == '<'))
244 i1
+= add_constructors (method_counter
, t
,
249 /* Only search baseclasses if there is no match yet, since names in
250 derived classes override those in baseclasses.
252 FIXME: The above is not true; it is only true of member functions
253 if they have the same number of arguments (??? - section 13.1 of the
254 ARM says the function members are not in the same scope but doesn't
255 really spell out the rules in a way I understand. In any case, if
256 the number of arguments differ this is a case in which we can overload
257 rather than hiding without any problem, and gcc 2.4.5 does overload
258 rather than hiding in this case). */
261 for (ibase
= 0; ibase
< TYPE_N_BASECLASSES (t
); ibase
++)
262 i1
+= find_methods (TYPE_BASECLASS (t
, ibase
), name
, sym_arr
+ i1
);
267 /* Add the symbols associated to methods of the class whose type is T
268 and whose name matches the method indexed by METHOD_COUNTER in the
269 array SYM_ARR. Return the number of methods added. */
272 add_matching_methods (int method_counter
, struct type
*t
,
273 struct symbol
**sym_arr
)
278 for (field_counter
= TYPE_FN_FIELDLIST_LENGTH (t
, method_counter
) - 1;
285 f
= TYPE_FN_FIELDLIST1 (t
, method_counter
);
287 if (TYPE_FN_FIELD_STUB (f
, field_counter
))
291 tmp_name
= gdb_mangle_name (t
,
294 phys_name
= alloca (strlen (tmp_name
) + 1);
295 strcpy (phys_name
, tmp_name
);
299 phys_name
= TYPE_FN_FIELD_PHYSNAME (f
, field_counter
);
301 /* Destructor is handled by caller, don't add it to
303 if (is_destructor_name (phys_name
) != 0)
306 sym_arr
[i1
] = lookup_symbol (phys_name
,
309 (struct symtab
**) NULL
);
314 /* This error message gets printed, but the method
315 still seems to be found
316 fputs_filtered("(Cannot find method ", gdb_stdout);
317 fprintf_symbol_filtered (gdb_stdout, phys_name,
319 DMGL_PARAMS | DMGL_ANSI);
320 fputs_filtered(" - possibly inlined.)\n", gdb_stdout);
328 /* Add the symbols associated to constructors of the class whose type
329 is CLASS_TYPE and which are indexed by by METHOD_COUNTER to the
330 array SYM_ARR. Return the number of methods added. */
333 add_constructors (int method_counter
, struct type
*t
,
334 struct symbol
**sym_arr
)
339 /* For GCC 3.x and stabs, constructors and destructors
340 have names like __base_ctor and __complete_dtor.
341 Check the physname for now if we're looking for a
344 = TYPE_FN_FIELDLIST_LENGTH (t
, method_counter
) - 1;
351 f
= TYPE_FN_FIELDLIST1 (t
, method_counter
);
353 /* GCC 3.x will never produce stabs stub methods, so
354 we don't need to handle this case. */
355 if (TYPE_FN_FIELD_STUB (f
, field_counter
))
357 phys_name
= TYPE_FN_FIELD_PHYSNAME (f
, field_counter
);
358 if (! is_constructor_name (phys_name
))
361 /* If this method is actually defined, include it in the
363 sym_arr
[i1
] = lookup_symbol (phys_name
,
366 (struct symtab
**) NULL
);
374 /* Helper function for decode_line_1.
375 Build a canonical line spec in CANONICAL if it is non-NULL and if
376 the SAL has a symtab.
377 If SYMNAME is non-NULL the canonical line spec is `filename:symname'.
378 If SYMNAME is NULL the line number from SAL is used and the canonical
379 line spec is `filename:linenum'. */
382 build_canonical_line_spec (struct symtab_and_line
*sal
, char *symname
,
385 char **canonical_arr
;
386 char *canonical_name
;
388 struct symtab
*s
= sal
->symtab
;
390 if (s
== (struct symtab
*) NULL
391 || s
->filename
== (char *) NULL
392 || canonical
== (char ***) NULL
)
395 canonical_arr
= (char **) xmalloc (sizeof (char *));
396 *canonical
= canonical_arr
;
398 filename
= s
->filename
;
401 canonical_name
= xmalloc (strlen (filename
) + strlen (symname
) + 2);
402 sprintf (canonical_name
, "%s:%s", filename
, symname
);
406 canonical_name
= xmalloc (strlen (filename
) + 30);
407 sprintf (canonical_name
, "%s:%d", filename
, sal
->line
);
409 canonical_arr
[0] = canonical_name
;
414 /* Find an instance of the character C in the string S that is outside
415 of all parenthesis pairs, single-quoted strings, and double-quoted
416 strings. Also, ignore the char within a template name, like a ','
417 within foo<int, int>. */
420 find_toplevel_char (char *s
, char c
)
422 int quoted
= 0; /* zero if we're not in quotes;
423 '"' if we're in a double-quoted string;
424 '\'' if we're in a single-quoted string. */
425 int depth
= 0; /* Number of unclosed parens we've seen. */
428 for (scan
= s
; *scan
; scan
++)
434 else if (*scan
== '\\' && *(scan
+ 1))
437 else if (*scan
== c
&& ! quoted
&& depth
== 0)
439 else if (*scan
== '"' || *scan
== '\'')
441 else if (*scan
== '(' || *scan
== '<')
443 else if ((*scan
== ')' || *scan
== '>') && depth
> 0)
450 /* Determines if the gives string corresponds to an Objective-C method
451 representation, such as -[Foo bar:] or +[Foo bar]. Objective-C symbols
452 are allowed to have spaces and parentheses in them. */
455 is_objc_method_format (const char *s
)
457 if (s
== NULL
|| *s
== '\0')
459 /* Handle arguments with the format FILENAME:SYMBOL. */
460 if ((s
[0] == ':') && (strchr ("+-", s
[1]) != NULL
)
461 && (s
[2] == '[') && strchr(s
, ']'))
463 /* Handle arguments that are just SYMBOL. */
464 else if ((strchr ("+-", s
[0]) != NULL
) && (s
[1] == '[') && strchr(s
, ']'))
469 /* Given a list of NELTS symbols in SYM_ARR, return a list of lines to
470 operate on (ask user if necessary).
471 If CANONICAL is non-NULL return a corresponding array of mangled names
472 as canonical line specs there. */
474 static struct symtabs_and_lines
475 decode_line_2 (struct symbol
*sym_arr
[], int nelts
, int funfirstline
,
478 struct symtabs_and_lines values
, return_values
;
483 struct cleanup
*old_chain
;
484 char **canonical_arr
= (char **) NULL
;
486 values
.sals
= (struct symtab_and_line
*)
487 alloca (nelts
* sizeof (struct symtab_and_line
));
488 return_values
.sals
= (struct symtab_and_line
*)
489 xmalloc (nelts
* sizeof (struct symtab_and_line
));
490 old_chain
= make_cleanup (xfree
, return_values
.sals
);
494 canonical_arr
= (char **) xmalloc (nelts
* sizeof (char *));
495 make_cleanup (xfree
, canonical_arr
);
496 memset (canonical_arr
, 0, nelts
* sizeof (char *));
497 *canonical
= canonical_arr
;
501 printf_unfiltered ("[0] cancel\n[1] all\n");
504 init_sal (&return_values
.sals
[i
]); /* Initialize to zeroes. */
505 init_sal (&values
.sals
[i
]);
506 if (sym_arr
[i
] && SYMBOL_CLASS (sym_arr
[i
]) == LOC_BLOCK
)
508 values
.sals
[i
] = find_function_start_sal (sym_arr
[i
], funfirstline
);
509 if (values
.sals
[i
].symtab
)
510 printf_unfiltered ("[%d] %s at %s:%d\n",
512 SYMBOL_PRINT_NAME (sym_arr
[i
]),
513 values
.sals
[i
].symtab
->filename
,
514 values
.sals
[i
].line
);
516 printf_unfiltered ("[%d] %s at ?FILE:%d [No symtab? Probably broken debug info...]\n",
518 SYMBOL_PRINT_NAME (sym_arr
[i
]),
519 values
.sals
[i
].line
);
523 printf_unfiltered ("?HERE\n");
527 prompt
= getenv ("PS2");
532 args
= command_line_input (prompt
, 0, "overload-choice");
534 if (args
== 0 || *args
== 0)
535 error_no_arg ("one or more choice numbers");
543 while (*arg1
>= '0' && *arg1
<= '9')
545 if (*arg1
&& *arg1
!= ' ' && *arg1
!= '\t')
546 error ("Arguments must be choice numbers.");
556 for (i
= 0; i
< nelts
; i
++)
558 if (canonical_arr
[i
] == NULL
)
560 symname
= DEPRECATED_SYMBOL_NAME (sym_arr
[i
]);
561 canonical_arr
[i
] = savestring (symname
, strlen (symname
));
565 memcpy (return_values
.sals
, values
.sals
,
566 (nelts
* sizeof (struct symtab_and_line
)));
567 return_values
.nelts
= nelts
;
568 discard_cleanups (old_chain
);
569 return return_values
;
572 if (num
>= nelts
+ 2)
574 printf_unfiltered ("No choice number %d.\n", num
);
579 if (values
.sals
[num
].pc
)
583 symname
= DEPRECATED_SYMBOL_NAME (sym_arr
[num
]);
584 make_cleanup (xfree
, symname
);
585 canonical_arr
[i
] = savestring (symname
, strlen (symname
));
587 return_values
.sals
[i
++] = values
.sals
[num
];
588 values
.sals
[num
].pc
= 0;
592 printf_unfiltered ("duplicate request for %d ignored.\n", num
);
597 while (*args
== ' ' || *args
== '\t')
600 return_values
.nelts
= i
;
601 discard_cleanups (old_chain
);
602 return return_values
;
605 /* The parser of linespec itself. */
607 /* Parse a string that specifies a line number.
608 Pass the address of a char * variable; that variable will be
609 advanced over the characters actually parsed.
613 LINENUM -- that line number in current file. PC returned is 0.
614 FILE:LINENUM -- that line in that file. PC returned is 0.
615 FUNCTION -- line number of openbrace of that function.
616 PC returned is the start of the function.
617 VARIABLE -- line number of definition of that variable.
619 FILE:FUNCTION -- likewise, but prefer functions in that file.
620 *EXPR -- line in which address EXPR appears.
622 This may all be followed by an "if EXPR", which we ignore.
624 FUNCTION may be an undebuggable function found in minimal symbol table.
626 If the argument FUNFIRSTLINE is nonzero, we want the first line
627 of real code inside a function when a function is specified, and it is
628 not OK to specify a variable or type to get its line number.
630 DEFAULT_SYMTAB specifies the file to use if none is specified.
631 It defaults to current_source_symtab.
632 DEFAULT_LINE specifies the line number to use for relative
633 line numbers (that start with signs). Defaults to current_source_line.
634 If CANONICAL is non-NULL, store an array of strings containing the canonical
635 line specs there if necessary. Currently overloaded member functions and
636 line numbers or static functions without a filename yield a canonical
637 line spec. The array and the line spec strings are allocated on the heap,
638 it is the callers responsibility to free them.
640 Note that it is possible to return zero for the symtab
641 if no file is validly specified. Callers must check that.
642 Also, the line number returned may be invalid.
644 If NOT_FOUND_PTR is not null, store a boolean true/false value at the location, based
645 on whether or not failure occurs due to an unknown function or file. In the case
646 where failure does occur due to an unknown function or file, do not issue an error
649 /* We allow single quotes in various places. This is a hideous
650 kludge, which exists because the completer can't yet deal with the
651 lack of single quotes. FIXME: write a linespec_completer which we
652 can use as appropriate instead of make_symbol_completion_list. */
654 struct symtabs_and_lines
655 decode_line_1 (char **argptr
, int funfirstline
, struct symtab
*default_symtab
,
656 int default_line
, char ***canonical
, int *not_found_ptr
)
660 /* If a file name is specified, this is its symtab. */
661 struct symtab
*file_symtab
= NULL
;
664 /* This is NULL if there are no parens in *ARGPTR, or a pointer to
665 the closing parenthesis if there are parens. */
667 /* This says whether or not something in *ARGPTR is quoted with
668 completer_quotes (i.e. with single quotes). */
670 /* Is part of *ARGPTR is enclosed in double quotes? */
671 int is_quote_enclosed
;
672 int is_objc_method
= 0;
673 char *saved_arg
= *argptr
;
678 /* Defaults have defaults. */
680 initialize_defaults (&default_symtab
, &default_line
);
682 /* See if arg is *PC. */
685 return decode_indirect (argptr
);
687 /* Set various flags. 'paren_pointer' is important for overload
688 checking, where we allow things like:
689 (gdb) break c::f(int)
692 set_flags (*argptr
, &is_quoted
, &paren_pointer
);
694 /* Check to see if it's a multipart linespec (with colons or
697 /* Locate the end of the first half of the linespec. */
699 p
= locate_first_half (argptr
, &is_quote_enclosed
);
701 /* Check if this is an Objective-C method (anything that starts with
702 a '+' or '-' and a '['). */
703 if (is_objc_method_format (p
))
706 paren_pointer
= NULL
; /* Just a category name. Ignore it. */
709 /* Check if the symbol could be an Objective-C selector. */
712 struct symtabs_and_lines values
;
713 values
= decode_objc (argptr
, funfirstline
, NULL
,
714 canonical
, saved_arg
);
715 if (values
.sals
!= NULL
)
719 /* Does it look like there actually were two parts? */
721 if ((p
[0] == ':' || p
[0] == '.') && paren_pointer
== NULL
)
724 *argptr
= *argptr
+ 1;
726 /* Is it a C++ or Java compound data structure? */
728 if (p
[0] == '.' || p
[1] == ':')
729 return decode_compound (argptr
, funfirstline
, canonical
,
732 /* No, the first part is a filename; set s to be that file's
733 symtab. Also, move argptr past the filename. */
735 file_symtab
= symtab_from_filename (argptr
, p
, is_quote_enclosed
,
739 /* No one really seems to know why this was added. It certainly
740 breaks the command line, though, whenever the passed
741 name is of the form ClassName::Method. This bit of code
742 singles out the class name, and if funfirstline is set (for
743 example, you are setting a breakpoint at this function),
744 you get an error. This did not occur with earlier
745 verions, so I am ifdef'ing this out. 3/29/99 */
748 /* Check if what we have till now is a symbol name */
750 /* We may be looking at a template instantiation such
751 as "foo<int>". Check here whether we know about it,
752 instead of falling through to the code below which
753 handles ordinary function names, because that code
754 doesn't like seeing '<' and '>' in a name -- the
755 skip_quoted call doesn't go past them. So see if we
756 can figure it out right now. */
758 copy
= (char *) alloca (p
- *argptr
+ 1);
759 memcpy (copy
, *argptr
, p
- *argptr
);
760 copy
[p
- *argptr
] = '\000';
761 sym
= lookup_symbol (copy
, 0, VAR_DOMAIN
, 0, &sym_symtab
);
764 *argptr
= (*p
== '\'') ? p
+ 1 : p
;
765 return symbol_found (funfirstline
, canonical
, copy
, sym
,
768 /* Otherwise fall out from here and go to file/line spec
773 /* S is specified file's symtab, or 0 if no file specified.
774 arg no longer contains the file name. */
776 /* Check whether arg is all digits (and sign). */
779 if (*q
== '-' || *q
== '+')
781 while (*q
>= '0' && *q
<= '9')
784 if (q
!= *argptr
&& (*q
== 0 || *q
== ' ' || *q
== '\t' || *q
== ','))
785 /* We found a token consisting of all digits -- at least one digit. */
786 return decode_all_digits (argptr
, default_symtab
, default_line
,
787 canonical
, file_symtab
, q
);
789 /* Arg token is not digits => try it as a variable name
790 Find the next token (everything up to end or next whitespace). */
792 if (**argptr
== '$') /* May be a convenience variable. */
793 /* One or two $ chars possible. */
794 p
= skip_quoted (*argptr
+ (((*argptr
)[1] == '$') ? 2 : 1));
797 p
= skip_quoted (*argptr
);
799 error ("Unmatched single quote.");
801 else if (is_objc_method
)
803 /* allow word separators in method names for Obj-C */
804 p
= skip_quoted_chars (*argptr
, NULL
, "");
806 else if (paren_pointer
!= NULL
)
808 p
= paren_pointer
+ 1;
812 p
= skip_quoted (*argptr
);
815 copy
= (char *) alloca (p
- *argptr
+ 1);
816 memcpy (copy
, *argptr
, p
- *argptr
);
817 copy
[p
- *argptr
] = '\0';
820 && copy
[0] == copy
[p
- *argptr
- 1]
821 && strchr (get_gdb_completer_quote_characters (), copy
[0]) != NULL
)
823 copy
[p
- *argptr
- 1] = '\0';
826 while (*p
== ' ' || *p
== '\t')
830 /* If it starts with $: may be a legitimate variable or routine name
831 (e.g. HP-UX millicode routines such as $$dyncall), or it may
832 be history value, or it may be a convenience variable. */
835 return decode_dollar (copy
, funfirstline
, default_symtab
,
836 canonical
, file_symtab
);
838 /* Look up that token as a variable.
839 If file specified, use that file's per-file block to start with. */
841 return decode_variable (copy
, funfirstline
, canonical
,
842 file_symtab
, not_found_ptr
);
847 /* Now, more helper functions for decode_line_1. Some conventions
848 that these functions follow:
850 Decode_line_1 typically passes along some of its arguments or local
851 variables to the subfunctions. It passes the variables by
852 reference if they are modified by the subfunction, and by value
855 Some of the functions have side effects that don't arise from
856 variables that are passed by reference. In particular, if a
857 function is passed ARGPTR as an argument, it modifies what ARGPTR
858 points to; typically, it advances *ARGPTR past whatever substring
859 it has just looked at. (If it doesn't modify *ARGPTR, then the
860 function gets passed *ARGPTR instead, which is then called ARG: see
861 set_flags, for example.) Also, functions that return a struct
862 symtabs_and_lines may modify CANONICAL, as in the description of
865 If a function returns a struct symtabs_and_lines, then that struct
866 will immediately make its way up the call chain to be returned by
867 decode_line_1. In particular, all of the functions decode_XXX
868 calculate the appropriate struct symtabs_and_lines, under the
869 assumption that their argument is of the form XXX. */
871 /* First, some functions to initialize stuff at the beggining of the
875 initialize_defaults (struct symtab
**default_symtab
, int *default_line
)
877 if (*default_symtab
== 0)
879 /* Use whatever we have for the default source line. We don't use
880 get_current_or_default_symtab_and_line as it can recurse and call
882 struct symtab_and_line cursal
=
883 get_current_source_symtab_and_line ();
885 *default_symtab
= cursal
.symtab
;
886 *default_line
= cursal
.line
;
891 set_flags (char *arg
, int *is_quoted
, char **paren_pointer
)
896 /* 'has_if' is for the syntax:
897 (gdb) break foo if (a==b)
899 if ((ii
= strstr (arg
, " if ")) != NULL
||
900 (ii
= strstr (arg
, "\tif ")) != NULL
||
901 (ii
= strstr (arg
, " if\t")) != NULL
||
902 (ii
= strstr (arg
, "\tif\t")) != NULL
||
903 (ii
= strstr (arg
, " if(")) != NULL
||
904 (ii
= strstr (arg
, "\tif( ")) != NULL
)
906 /* Temporarily zap out "if (condition)" to not confuse the
907 parenthesis-checking code below. This is undone below. Do not
915 && strchr (get_gdb_completer_quote_characters (),
918 *paren_pointer
= strchr (arg
, '(');
919 if (*paren_pointer
!= NULL
)
920 *paren_pointer
= strrchr (*paren_pointer
, ')');
922 /* Now that we're safely past the paren_pointer check, put back " if
923 (condition)" so outer layers can see it. */
930 /* Decode arg of the form *PC. */
932 static struct symtabs_and_lines
933 decode_indirect (char **argptr
)
935 struct symtabs_and_lines values
;
939 pc
= parse_and_eval_address_1 (argptr
);
941 values
.sals
= (struct symtab_and_line
*)
942 xmalloc (sizeof (struct symtab_and_line
));
945 values
.sals
[0] = find_pc_line (pc
, 0);
946 values
.sals
[0].pc
= pc
;
947 values
.sals
[0].section
= find_pc_overlay (pc
);
954 /* Locate the first half of the linespec, ending in a colon, period,
955 or whitespace. (More or less.) Also, check to see if *ARGPTR is
956 enclosed in double quotes; if so, set is_quote_enclosed, advance
957 ARGPTR past that and zero out the trailing double quote. */
960 locate_first_half (char **argptr
, int *is_quote_enclosed
)
966 /* Maybe we were called with a line range FILENAME:LINENUM,FILENAME:LINENUM
967 and we must isolate the first half. Outer layers will call again later
970 Don't count commas that appear in argument lists of overloaded
971 functions, or in quoted strings. It's stupid to go to this much
972 trouble when the rest of the function is such an obvious roach hotel. */
973 ii
= find_toplevel_char (*argptr
, ',');
974 has_comma
= (ii
!= 0);
976 /* Temporarily zap out second half to not confuse the code below.
977 This is undone below. Do not change ii!! */
983 /* Maybe arg is FILE : LINENUM or FILE : FUNCTION. May also be
984 CLASS::MEMBER, or NAMESPACE::NAME. Look for ':', but ignore
990 *is_quote_enclosed
= 1;
995 *is_quote_enclosed
= 0;
1000 char *temp_end
= find_template_name_end (p
);
1002 error ("malformed template specification in command");
1005 /* Check for a colon and a plus or minus and a [ (which
1006 indicates an Objective-C method) */
1007 if (is_objc_method_format (p
))
1011 /* Check for the end of the first half of the linespec. End of
1012 line, a tab, a double colon or the last single colon, or a
1013 space. But if enclosed in double quotes we do not break on
1018 && ((p
[1] == ':') || (strchr (p
+ 1, ':') == NULL
)))
1019 || ((p
[0] == ' ') && !*is_quote_enclosed
))
1021 if (p
[0] == '.' && strchr (p
, ':') == NULL
)
1023 /* Java qualified method. Find the *last* '.', since the
1024 others are package qualifiers. */
1025 for (p1
= p
; *p1
; p1
++)
1033 while (p
[0] == ' ' || p
[0] == '\t')
1036 /* If the closing double quote was left at the end, remove it. */
1037 if (*is_quote_enclosed
)
1039 char *closing_quote
= strchr (p
- 1, '"');
1040 if (closing_quote
&& closing_quote
[1] == '\0')
1041 *closing_quote
= '\0';
1044 /* Now that we've safely parsed the first half, put back ',' so
1045 outer layers can see it. */
1054 /* Here's where we recognise an Objective-C Selector. An Objective C
1055 selector may be implemented by more than one class, therefore it
1056 may represent more than one method/function. This gives us a
1057 situation somewhat analogous to C++ overloading. If there's more
1058 than one method that could represent the selector, then use some of
1059 the existing C++ code to let the user choose one. */
1061 struct symtabs_and_lines
1062 decode_objc (char **argptr
, int funfirstline
, struct symtab
*file_symtab
,
1063 char ***canonical
, char *saved_arg
)
1065 struct symtabs_and_lines values
;
1066 struct symbol
**sym_arr
= NULL
;
1067 struct symbol
*sym
= NULL
;
1069 struct block
*block
= NULL
;
1076 if (file_symtab
!= NULL
)
1077 block
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (file_symtab
), STATIC_BLOCK
);
1079 block
= get_selected_block (0);
1081 copy
= find_imps (file_symtab
, block
, *argptr
, NULL
, &i1
, &i2
);
1085 sym_arr
= (struct symbol
**) alloca ((i1
+ 1) * sizeof (struct symbol
*));
1088 copy
= find_imps (file_symtab
, block
, *argptr
, sym_arr
, &i1
, &i2
);
1092 /* i1 now represents the TOTAL number of matches found.
1093 i2 represents how many HIGH-LEVEL (struct symbol) matches,
1094 which will come first in the sym_arr array. Any low-level
1095 (minimal_symbol) matches will follow those. */
1101 /* Already a struct symbol. */
1106 sym
= find_pc_function (SYMBOL_VALUE_ADDRESS (sym_arr
[0]));
1107 if ((sym
!= NULL
) && strcmp (SYMBOL_LINKAGE_NAME (sym_arr
[0]), SYMBOL_LINKAGE_NAME (sym
)) != 0)
1109 warning ("debugging symbol \"%s\" does not match selector; ignoring", SYMBOL_LINKAGE_NAME (sym
));
1114 values
.sals
= (struct symtab_and_line
*) xmalloc (sizeof (struct symtab_and_line
));
1117 if (sym
&& SYMBOL_CLASS (sym
) == LOC_BLOCK
)
1119 /* Canonicalize this, so it remains resolved for dylib loads. */
1120 values
.sals
[0] = find_function_start_sal (sym
, funfirstline
);
1121 build_canonical_line_spec (values
.sals
, SYMBOL_NATURAL_NAME (sym
), canonical
);
1125 /* The only match was a non-debuggable symbol. */
1126 values
.sals
[0].symtab
= 0;
1127 values
.sals
[0].line
= 0;
1128 values
.sals
[0].end
= 0;
1129 values
.sals
[0].pc
= SYMBOL_VALUE_ADDRESS (sym_arr
[0]);
1136 /* More than one match. The user must choose one or more. */
1137 return decode_line_2 (sym_arr
, i2
, funfirstline
, canonical
);
1143 /* This handles C++ and Java compound data structures. P should point
1144 at the first component separator, i.e. double-colon or period. */
1146 static struct symtabs_and_lines
1147 decode_compound (char **argptr
, int funfirstline
, char ***canonical
,
1148 char *saved_arg
, char *p
)
1150 struct symtabs_and_lines values
;
1155 char *saved_arg2
= *argptr
;
1158 /* The symtab that SYM was found in. */
1159 struct symtab
*sym_symtab
;
1161 struct symbol
*sym_class
;
1162 struct symbol
**sym_arr
;
1165 /* First check for "global" namespace specification,
1166 of the form "::foo". If found, skip over the colons
1167 and jump to normal symbol processing. */
1169 && ((*argptr
== p
) || (p
[-1] == ' ') || (p
[-1] == '\t')))
1172 /* We have what looks like a class or namespace
1173 scope specification (A::B), possibly with many
1174 levels of namespaces or classes (A::B::C::D).
1176 Some versions of the HP ANSI C++ compiler (as also possibly
1177 other compilers) generate class/function/member names with
1178 embedded double-colons if they are inside namespaces. To
1179 handle this, we loop a few times, considering larger and
1180 larger prefixes of the string as though they were single
1181 symbols. So, if the initially supplied string is
1182 A::B::C::D::foo, we have to look up "A", then "A::B",
1183 then "A::B::C", then "A::B::C::D", and finally
1184 "A::B::C::D::foo" as single, monolithic symbols, because
1185 A, B, C or D may be namespaces.
1187 Note that namespaces can nest only inside other
1188 namespaces, and not inside classes. So we need only
1189 consider *prefixes* of the string; there is no need to look up
1190 "B::C" separately as a symbol in the previous example. */
1192 p2
= p
; /* Save for restart. */
1195 sym_class
= lookup_prefix_sym (argptr
, p
);
1198 (t
= check_typedef (SYMBOL_TYPE (sym_class
)),
1199 (TYPE_CODE (t
) == TYPE_CODE_STRUCT
1200 || TYPE_CODE (t
) == TYPE_CODE_UNION
)))
1202 /* Arg token is not digits => try it as a function name.
1203 Find the next token (everything up to end or next
1206 && strchr (get_gdb_completer_quote_characters (),
1209 p
= skip_quoted (*argptr
);
1210 *argptr
= *argptr
+ 1;
1215 while (*p
&& *p
!= ' ' && *p
!= '\t' && *p
!= ',' && *p
!= ':')
1219 q = operator_chars (*argptr, &q1);
1223 char *tmp = alloca (q1 - q + 1);
1224 memcpy (tmp, q, q1 - q);
1226 opname = cplus_mangle_opname (tmp, DMGL_ANSI);
1229 cplusplus_error (saved_arg, "no mangling for \"%s\"\n", tmp);
1231 copy = (char*) alloca (3 + strlen(opname));
1232 sprintf (copy, "__%s", opname);
1238 copy
= (char *) alloca (p
- *argptr
+ 1);
1239 memcpy (copy
, *argptr
, p
- *argptr
);
1240 copy
[p
- *argptr
] = '\0';
1242 && copy
[p
- *argptr
- 1]
1243 && strchr (get_gdb_completer_quote_characters (),
1244 copy
[p
- *argptr
- 1]) != NULL
)
1245 copy
[p
- *argptr
- 1] = '\0';
1248 /* No line number may be specified. */
1249 while (*p
== ' ' || *p
== '\t')
1253 return find_method (funfirstline
, canonical
, saved_arg
,
1254 copy
, t
, sym_class
);
1257 /* Move pointer up to next possible class/namespace token. */
1258 p
= p2
+ 1; /* Restart with old value +1. */
1259 /* Move pointer ahead to next double-colon. */
1260 while (*p
&& (p
[0] != ' ') && (p
[0] != '\t') && (p
[0] != '\''))
1264 temp_end
= find_template_name_end (p
);
1266 error ("malformed template specification in command");
1269 else if ((p
[0] == ':') && (p
[1] == ':'))
1270 break; /* Found double-colon. */
1276 break; /* Out of the while (1). */
1278 p2
= p
; /* Save restart for next time around. */
1279 *argptr
= saved_arg2
; /* Restore argptr. */
1282 /* Last chance attempt -- check entire name as a symbol. Use "copy"
1283 in preparation for jumping out of this block, to be consistent
1284 with usage following the jump target. */
1285 copy
= (char *) alloca (p
- saved_arg2
+ 1);
1286 memcpy (copy
, saved_arg2
, p
- saved_arg2
);
1287 /* Note: if is_quoted should be true, we snuff out quote here
1289 copy
[p
- saved_arg2
] = '\000';
1290 /* Set argptr to skip over the name. */
1291 *argptr
= (*p
== '\'') ? p
+ 1 : p
;
1292 /* Look up entire name */
1293 sym
= lookup_symbol (copy
, 0, VAR_DOMAIN
, 0, &sym_symtab
);
1295 return symbol_found (funfirstline
, canonical
, copy
, sym
,
1298 /* Couldn't find any interpretation as classes/namespaces, so give
1299 up. The quotes are important if copy is empty. */
1300 cplusplus_error (saved_arg
,
1301 "Can't find member of namespace, class, struct, or union named \"%s\"\n",
1305 /* Next come some helper functions for decode_compound. */
1307 /* Return the symbol corresponding to the substring of *ARGPTR ending
1308 at P, allowing whitespace. Also, advance *ARGPTR past the symbol
1309 name in question, the compound object separator ("::" or "."), and
1312 static struct symbol
*
1313 lookup_prefix_sym (char **argptr
, char *p
)
1318 /* Extract the class name. */
1320 while (p
!= *argptr
&& p
[-1] == ' ')
1322 copy
= (char *) alloca (p
- *argptr
+ 1);
1323 memcpy (copy
, *argptr
, p
- *argptr
);
1324 copy
[p
- *argptr
] = 0;
1326 /* Discard the class name from the arg. */
1327 p
= p1
+ (p1
[0] == ':' ? 2 : 1);
1328 while (*p
== ' ' || *p
== '\t')
1332 return lookup_symbol (copy
, 0, STRUCT_DOMAIN
, 0,
1333 (struct symtab
**) NULL
);
1336 /* This finds the method COPY in the class whose type is T and whose
1337 symbol is SYM_CLASS. */
1339 static struct symtabs_and_lines
1340 find_method (int funfirstline
, char ***canonical
, char *saved_arg
,
1341 char *copy
, struct type
*t
, struct symbol
*sym_class
)
1343 struct symtabs_and_lines values
;
1344 struct symbol
*sym
= 0;
1345 int i1
; /* Counter for the symbol array. */
1346 struct symbol
**sym_arr
= alloca (total_number_of_methods (t
)
1347 * sizeof (struct symbol
*));
1349 /* Find all methods with a matching name, and put them in
1352 i1
= collect_methods (copy
, t
, sym_arr
);
1356 /* There is exactly one field with that name. */
1359 if (sym
&& SYMBOL_CLASS (sym
) == LOC_BLOCK
)
1361 values
.sals
= (struct symtab_and_line
*)
1362 xmalloc (sizeof (struct symtab_and_line
));
1364 values
.sals
[0] = find_function_start_sal (sym
,
1375 /* There is more than one field with that name
1376 (overloaded). Ask the user which one to use. */
1377 return decode_line_2 (sym_arr
, i1
, funfirstline
, canonical
);
1383 if (is_operator_name (copy
))
1385 tmp
= (char *) alloca (strlen (copy
+ 3) + 9);
1386 strcpy (tmp
, "operator ");
1387 strcat (tmp
, copy
+ 3);
1392 cplusplus_error (saved_arg
,
1393 "the class `%s' does not have destructor defined\n",
1394 SYMBOL_PRINT_NAME (sym_class
));
1396 cplusplus_error (saved_arg
,
1397 "the class %s does not have any method named %s\n",
1398 SYMBOL_PRINT_NAME (sym_class
), tmp
);
1402 /* Find all methods named COPY in the class whose type is T, and put
1403 them in SYM_ARR. Return the number of methods found. */
1406 collect_methods (char *copy
, struct type
*t
,
1407 struct symbol
**sym_arr
)
1409 int i1
= 0; /* Counter for the symbol array. */
1411 if (destructor_name_p (copy
, t
))
1413 /* Destructors are a special case. */
1414 int m_index
, f_index
;
1416 if (get_destructor_fn_field (t
, &m_index
, &f_index
))
1418 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (t
, m_index
);
1421 lookup_symbol (TYPE_FN_FIELD_PHYSNAME (f
, f_index
),
1422 NULL
, VAR_DOMAIN
, (int *) NULL
,
1423 (struct symtab
**) NULL
);
1429 i1
= find_methods (t
, copy
, sym_arr
);
1436 /* Return the symtab associated to the filename given by the substring
1437 of *ARGPTR ending at P, and advance ARGPTR past that filename. If
1438 NOT_FOUND_PTR is not null and the source file is not found, store
1439 boolean true at the location pointed to and do not issue an
1442 static struct symtab
*
1443 symtab_from_filename (char **argptr
, char *p
, int is_quote_enclosed
,
1448 struct symtab
*file_symtab
;
1451 while (p
!= *argptr
&& p
[-1] == ' ')
1453 if ((*p
== '"') && is_quote_enclosed
)
1455 copy
= (char *) alloca (p
- *argptr
+ 1);
1456 memcpy (copy
, *argptr
, p
- *argptr
);
1457 /* It may have the ending quote right after the file name. */
1458 if (is_quote_enclosed
&& copy
[p
- *argptr
- 1] == '"')
1459 copy
[p
- *argptr
- 1] = 0;
1461 copy
[p
- *argptr
] = 0;
1463 /* Find that file's data. */
1464 file_symtab
= lookup_symtab (copy
);
1465 if (file_symtab
== 0)
1467 if (!have_full_symbols () && !have_partial_symbols ())
1468 error ("No symbol table is loaded. Use the \"file\" command.");
1472 throw_exception (RETURN_ERROR
);
1474 error ("No source file named %s.", copy
);
1477 /* Discard the file name from the arg. */
1479 while (*p
== ' ' || *p
== '\t')
1488 /* This decodes a line where the argument is all digits (possibly
1489 preceded by a sign). Q should point to the end of those digits;
1490 the other arguments are as usual. */
1492 static struct symtabs_and_lines
1493 decode_all_digits (char **argptr
, struct symtab
*default_symtab
,
1494 int default_line
, char ***canonical
,
1495 struct symtab
*file_symtab
, char *q
)
1498 struct symtabs_and_lines values
;
1499 struct symtab_and_line val
;
1507 /* We might need a canonical line spec if no file was specified. */
1508 int need_canonical
= (file_symtab
== 0) ? 1 : 0;
1512 /* This is where we need to make sure that we have good defaults.
1513 We must guarantee that this section of code is never executed
1514 when we are called with just a function name, since
1515 set_default_source_symtab_and_line uses
1516 select_source_symtab that calls us with such an argument. */
1518 if (file_symtab
== 0 && default_symtab
== 0)
1520 /* Make sure we have at least a default source file. */
1521 set_default_source_symtab_and_line ();
1522 initialize_defaults (&default_symtab
, &default_line
);
1525 if (**argptr
== '+')
1526 sign
= plus
, (*argptr
)++;
1527 else if (**argptr
== '-')
1528 sign
= minus
, (*argptr
)++;
1529 val
.line
= atoi (*argptr
);
1535 if (file_symtab
== 0)
1536 val
.line
= default_line
+ val
.line
;
1541 if (file_symtab
== 0)
1542 val
.line
= default_line
- val
.line
;
1547 break; /* No need to adjust val.line. */
1550 while (*q
== ' ' || *q
== '\t')
1553 if (file_symtab
== 0)
1554 file_symtab
= default_symtab
;
1556 /* It is possible that this source file has more than one symtab,
1557 and that the new line number specification has moved us from the
1558 default (in file_symtab) to a new one. */
1559 val
.symtab
= find_line_symtab (file_symtab
, val
.line
, NULL
, NULL
);
1560 if (val
.symtab
== 0)
1561 val
.symtab
= file_symtab
;
1564 values
.sals
= (struct symtab_and_line
*)
1565 xmalloc (sizeof (struct symtab_and_line
));
1566 values
.sals
[0] = val
;
1569 build_canonical_line_spec (values
.sals
, NULL
, canonical
);
1575 /* Decode a linespec starting with a dollar sign. */
1577 static struct symtabs_and_lines
1578 decode_dollar (char *copy
, int funfirstline
, struct symtab
*default_symtab
,
1579 char ***canonical
, struct symtab
*file_symtab
)
1583 int need_canonical
= 0;
1584 struct symtabs_and_lines values
;
1585 struct symtab_and_line val
;
1588 /* The symtab that SYM was found in. */
1589 struct symtab
*sym_symtab
;
1590 struct minimal_symbol
*msymbol
;
1592 p
= (copy
[1] == '$') ? copy
+ 2 : copy
+ 1;
1593 while (*p
>= '0' && *p
<= '9')
1595 if (!*p
) /* Reached end of token without hitting non-digit. */
1597 /* We have a value history reference. */
1598 sscanf ((copy
[1] == '$') ? copy
+ 2 : copy
+ 1, "%d", &index
);
1599 valx
= access_value_history ((copy
[1] == '$') ? -index
: index
);
1600 if (TYPE_CODE (VALUE_TYPE (valx
)) != TYPE_CODE_INT
)
1601 error ("History values used in line specs must have integer values.");
1605 /* Not all digits -- may be user variable/function or a
1606 convenience variable. */
1608 /* Look up entire name as a symbol first. */
1609 sym
= lookup_symbol (copy
, 0, VAR_DOMAIN
, 0, &sym_symtab
);
1610 file_symtab
= (struct symtab
*) 0;
1612 /* Symbol was found --> jump to normal symbol processing. */
1614 return symbol_found (funfirstline
, canonical
, copy
, sym
,
1617 /* If symbol was not found, look in minimal symbol tables. */
1618 msymbol
= lookup_minimal_symbol (copy
, NULL
, NULL
);
1619 /* Min symbol was found --> jump to minsym processing. */
1621 return minsym_found (funfirstline
, msymbol
);
1623 /* Not a user variable or function -- must be convenience variable. */
1624 need_canonical
= (file_symtab
== 0) ? 1 : 0;
1625 valx
= value_of_internalvar (lookup_internalvar (copy
+ 1));
1626 if (TYPE_CODE (VALUE_TYPE (valx
)) != TYPE_CODE_INT
)
1627 error ("Convenience variables used in line specs must have integer values.");
1632 /* Either history value or convenience value from above, in valx. */
1633 val
.symtab
= file_symtab
? file_symtab
: default_symtab
;
1634 val
.line
= value_as_long (valx
);
1637 values
.sals
= (struct symtab_and_line
*) xmalloc (sizeof val
);
1638 values
.sals
[0] = val
;
1642 build_canonical_line_spec (values
.sals
, NULL
, canonical
);
1649 /* Decode a linespec that's a variable. If FILE_SYMTAB is non-NULL,
1650 look in that symtab's static variables first. If NOT_FOUND_PTR is not NULL and
1651 the function cannot be found, store boolean true in the location pointed to
1652 and do not issue an error message. */
1654 static struct symtabs_and_lines
1655 decode_variable (char *copy
, int funfirstline
, char ***canonical
,
1656 struct symtab
*file_symtab
, int *not_found_ptr
)
1659 /* The symtab that SYM was found in. */
1660 struct symtab
*sym_symtab
;
1662 struct minimal_symbol
*msymbol
;
1664 sym
= lookup_symbol (copy
,
1666 ? BLOCKVECTOR_BLOCK (BLOCKVECTOR (file_symtab
),
1668 : get_selected_block (0)),
1669 VAR_DOMAIN
, 0, &sym_symtab
);
1672 return symbol_found (funfirstline
, canonical
, copy
, sym
,
1673 file_symtab
, sym_symtab
);
1675 msymbol
= lookup_minimal_symbol (copy
, NULL
, NULL
);
1677 if (msymbol
!= NULL
)
1678 return minsym_found (funfirstline
, msymbol
);
1680 if (!have_full_symbols () &&
1681 !have_partial_symbols () && !have_minimal_symbols ())
1682 error ("No symbol table is loaded. Use the \"file\" command.");
1687 throw_exception (RETURN_ERROR
);
1690 error ("Function \"%s\" not defined.", copy
);
1696 /* Now come some functions that are called from multiple places within
1699 /* We've found a symbol SYM to associate with our linespec; build a
1700 corresponding struct symtabs_and_lines. */
1702 static struct symtabs_and_lines
1703 symbol_found (int funfirstline
, char ***canonical
, char *copy
,
1704 struct symbol
*sym
, struct symtab
*file_symtab
,
1705 struct symtab
*sym_symtab
)
1707 struct symtabs_and_lines values
;
1709 if (SYMBOL_CLASS (sym
) == LOC_BLOCK
)
1711 /* Arg is the name of a function */
1712 values
.sals
= (struct symtab_and_line
*)
1713 xmalloc (sizeof (struct symtab_and_line
));
1714 values
.sals
[0] = find_function_start_sal (sym
, funfirstline
);
1717 /* Don't use the SYMBOL_LINE; if used at all it points to
1718 the line containing the parameters or thereabouts, not
1719 the first line of code. */
1721 /* We might need a canonical line spec if it is a static
1723 if (file_symtab
== 0)
1725 struct blockvector
*bv
= BLOCKVECTOR (sym_symtab
);
1726 struct block
*b
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1727 if (lookup_block_symbol (b
, copy
, NULL
, VAR_DOMAIN
) != NULL
)
1728 build_canonical_line_spec (values
.sals
, copy
, canonical
);
1735 error ("\"%s\" is not a function", copy
);
1736 else if (SYMBOL_LINE (sym
) != 0)
1738 /* We know its line number. */
1739 values
.sals
= (struct symtab_and_line
*)
1740 xmalloc (sizeof (struct symtab_and_line
));
1742 memset (&values
.sals
[0], 0, sizeof (values
.sals
[0]));
1743 values
.sals
[0].symtab
= sym_symtab
;
1744 values
.sals
[0].line
= SYMBOL_LINE (sym
);
1748 /* This can happen if it is compiled with a compiler which doesn't
1749 put out line numbers for variables. */
1750 /* FIXME: Shouldn't we just set .line and .symtab to zero
1751 and return? For example, "info line foo" could print
1753 error ("Line number not known for symbol \"%s\"", copy
);
1757 /* We've found a minimal symbol MSYMBOL to associate with our
1758 linespec; build a corresponding struct symtabs_and_lines. */
1760 static struct symtabs_and_lines
1761 minsym_found (int funfirstline
, struct minimal_symbol
*msymbol
)
1763 struct symtabs_and_lines values
;
1765 values
.sals
= (struct symtab_and_line
*)
1766 xmalloc (sizeof (struct symtab_and_line
));
1767 values
.sals
[0] = find_pc_sect_line (SYMBOL_VALUE_ADDRESS (msymbol
),
1768 (struct bfd_section
*) 0, 0);
1769 values
.sals
[0].section
= SYMBOL_BFD_SECTION (msymbol
);
1772 values
.sals
[0].pc
+= FUNCTION_START_OFFSET
;
1773 values
.sals
[0].pc
= SKIP_PROLOGUE (values
.sals
[0].pc
);
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