1 /* Symbol table lookup for the GNU debugger, GDB.
2 Copyright 1986, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 1998
3 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 2 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, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
32 #include "call-cmds.h"
33 #include "gdb_regex.h"
34 #include "expression.h"
41 #include <sys/types.h>
43 #include "gdb_string.h"
47 /* Prototype for one function in parser-defs.h,
48 instead of including that entire file. */
50 extern char *find_template_name_end (char *);
52 /* Prototypes for local functions */
54 static int find_methods (struct type
*, char *, struct symbol
**);
56 static void completion_list_add_name (char *, char *, int, char *, char *);
58 static void build_canonical_line_spec (struct symtab_and_line
*,
61 static struct symtabs_and_lines
decode_line_2 (struct symbol
*[],
64 static void rbreak_command (char *, int);
66 static void types_info (char *, int);
68 static void functions_info (char *, int);
70 static void variables_info (char *, int);
72 static void sources_info (char *, int);
74 static void output_source_filename (char *, int *);
76 char *operator_chars (char *, char **);
78 static int find_line_common (struct linetable
*, int, int *);
80 static struct partial_symbol
*lookup_partial_symbol (struct partial_symtab
*,
84 static struct symtab
*lookup_symtab_1 (char *);
86 static void cplusplus_hint (char *);
88 static struct symbol
*find_active_alias (struct symbol
*sym
, CORE_ADDR addr
);
90 /* This flag is used in hppa-tdep.c, and set in hp-symtab-read.c */
91 /* Signals the presence of objects compiled by HP compilers */
92 int hp_som_som_object_present
= 0;
94 static void fixup_section (struct general_symbol_info
*, struct objfile
*);
96 static int file_matches (char *, char **, int);
98 static void print_symbol_info (namespace_enum
,
99 struct symtab
*, struct symbol
*, int, char *);
101 static void print_msymbol_info (struct minimal_symbol
*);
103 static void symtab_symbol_info (char *, namespace_enum
, int);
105 static void overload_list_add_symbol (struct symbol
*sym
, char *oload_name
);
107 void _initialize_symtab (void);
111 /* The single non-language-specific builtin type */
112 struct type
*builtin_type_error
;
114 /* Block in which the most recently searched-for symbol was found.
115 Might be better to make this a parameter to lookup_symbol and
118 const struct block
*block_found
;
120 char no_symtab_msg
[] = "No symbol table is loaded. Use the \"file\" command.";
122 /* While the C++ support is still in flux, issue a possibly helpful hint on
123 using the new command completion feature on single quoted demangled C++
124 symbols. Remove when loose ends are cleaned up. FIXME -fnf */
127 cplusplus_hint (char *name
)
129 while (*name
== '\'')
131 printf_filtered ("Hint: try '%s<TAB> or '%s<ESC-?>\n", name
, name
);
132 printf_filtered ("(Note leading single quote.)\n");
135 /* Check for a symtab of a specific name; first in symtabs, then in
136 psymtabs. *If* there is no '/' in the name, a match after a '/'
137 in the symtab filename will also work. */
139 static struct symtab
*
140 lookup_symtab_1 (char *name
)
142 register struct symtab
*s
;
143 register struct partial_symtab
*ps
;
144 register char *slash
;
145 register struct objfile
*objfile
;
149 /* First, search for an exact match */
151 ALL_SYMTABS (objfile
, s
)
152 if (STREQ (name
, s
->filename
))
155 slash
= strchr (name
, '/');
157 /* Now, search for a matching tail (only if name doesn't have any dirs) */
160 ALL_SYMTABS (objfile
, s
)
162 char *p
= s
->filename
;
163 char *tail
= strrchr (p
, '/');
172 /* Same search rules as above apply here, but now we look thru the
175 ps
= lookup_partial_symtab (name
);
180 error ("Internal: readin %s pst for `%s' found when no symtab found.",
183 s
= PSYMTAB_TO_SYMTAB (ps
);
188 /* At this point, we have located the psymtab for this file, but
189 the conversion to a symtab has failed. This usually happens
190 when we are looking up an include file. In this case,
191 PSYMTAB_TO_SYMTAB doesn't return a symtab, even though one has
192 been created. So, we need to run through the symtabs again in
193 order to find the file.
194 XXX - This is a crock, and should be fixed inside of the the
195 symbol parsing routines. */
199 /* Lookup the symbol table of a source file named NAME. Try a couple
200 of variations if the first lookup doesn't work. */
203 lookup_symtab (char *name
)
205 register struct symtab
*s
;
210 s
= lookup_symtab_1 (name
);
215 /* This screws c-exp.y:yylex if there is both a type "tree" and a symtab
218 /* If name not found as specified, see if adding ".c" helps. */
219 /* Why is this? Is it just a user convenience? (If so, it's pretty
220 questionable in the presence of C++, FORTRAN, etc.). It's not in
223 copy
= (char *) alloca (strlen (name
) + 3);
226 s
= lookup_symtab_1 (copy
);
231 /* We didn't find anything; die. */
235 /* Lookup the partial symbol table of a source file named NAME.
236 *If* there is no '/' in the name, a match after a '/'
237 in the psymtab filename will also work. */
239 struct partial_symtab
*
240 lookup_partial_symtab (char *name
)
242 register struct partial_symtab
*pst
;
243 register struct objfile
*objfile
;
245 ALL_PSYMTABS (objfile
, pst
)
247 if (STREQ (name
, pst
->filename
))
253 /* Now, search for a matching tail (only if name doesn't have any dirs) */
255 if (!strchr (name
, '/'))
256 ALL_PSYMTABS (objfile
, pst
)
258 char *p
= pst
->filename
;
259 char *tail
= strrchr (p
, '/');
271 /* Mangle a GDB method stub type. This actually reassembles the pieces of the
272 full method name, which consist of the class name (from T), the unadorned
273 method name from METHOD_ID, and the signature for the specific overload,
274 specified by SIGNATURE_ID. Note that this function is g++ specific. */
277 gdb_mangle_name (struct type
*type
, int method_id
, int signature_id
)
279 int mangled_name_len
;
281 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
282 struct fn_field
*method
= &f
[signature_id
];
283 char *field_name
= TYPE_FN_FIELDLIST_NAME (type
, method_id
);
284 char *physname
= TYPE_FN_FIELD_PHYSNAME (f
, signature_id
);
285 char *newname
= type_name_no_tag (type
);
287 /* Does the form of physname indicate that it is the full mangled name
288 of a constructor (not just the args)? */
289 int is_full_physname_constructor
;
292 int is_destructor
= DESTRUCTOR_PREFIX_P (physname
);
293 /* Need a new type prefix. */
294 char *const_prefix
= method
->is_const
? "C" : "";
295 char *volatile_prefix
= method
->is_volatile
? "V" : "";
297 int len
= (newname
== NULL
? 0 : strlen (newname
));
299 is_full_physname_constructor
=
300 ((physname
[0] == '_' && physname
[1] == '_' &&
301 (isdigit (physname
[2]) || physname
[2] == 'Q' || physname
[2] == 't'))
302 || (strncmp (physname
, "__ct", 4) == 0));
305 is_full_physname_constructor
|| (newname
&& STREQ (field_name
, newname
));
308 is_destructor
= (strncmp (physname
, "__dt", 4) == 0);
310 if (is_destructor
|| is_full_physname_constructor
)
312 mangled_name
= (char *) xmalloc (strlen (physname
) + 1);
313 strcpy (mangled_name
, physname
);
319 sprintf (buf
, "__%s%s", const_prefix
, volatile_prefix
);
321 else if (physname
[0] == 't' || physname
[0] == 'Q')
323 /* The physname for template and qualified methods already includes
325 sprintf (buf
, "__%s%s", const_prefix
, volatile_prefix
);
331 sprintf (buf
, "__%s%s%d", const_prefix
, volatile_prefix
, len
);
333 mangled_name_len
= ((is_constructor
? 0 : strlen (field_name
))
338 /* Only needed for GNU-mangled names. ANSI-mangled names
339 work with the normal mechanisms. */
340 if (OPNAME_PREFIX_P (field_name
))
342 const char *opname
= cplus_mangle_opname (field_name
+ 3, 0);
344 error ("No mangling for \"%s\"", field_name
);
345 mangled_name_len
+= strlen (opname
);
346 mangled_name
= (char *) xmalloc (mangled_name_len
);
348 strncpy (mangled_name
, field_name
, 3);
349 mangled_name
[3] = '\0';
350 strcat (mangled_name
, opname
);
354 mangled_name
= (char *) xmalloc (mangled_name_len
);
356 mangled_name
[0] = '\0';
358 strcpy (mangled_name
, field_name
);
360 strcat (mangled_name
, buf
);
361 /* If the class doesn't have a name, i.e. newname NULL, then we just
362 mangle it using 0 for the length of the class. Thus it gets mangled
363 as something starting with `::' rather than `classname::'. */
365 strcat (mangled_name
, newname
);
367 strcat (mangled_name
, physname
);
368 return (mangled_name
);
373 /* Find which partial symtab on contains PC and SECTION. Return 0 if none. */
375 struct partial_symtab
*
376 find_pc_sect_psymtab (CORE_ADDR pc
, asection
*section
)
378 register struct partial_symtab
*pst
;
379 register struct objfile
*objfile
;
381 ALL_PSYMTABS (objfile
, pst
)
383 if (pc
>= pst
->textlow
&& pc
< pst
->texthigh
)
385 struct minimal_symbol
*msymbol
;
386 struct partial_symtab
*tpst
;
388 /* An objfile that has its functions reordered might have
389 many partial symbol tables containing the PC, but
390 we want the partial symbol table that contains the
391 function containing the PC. */
392 if (!(objfile
->flags
& OBJF_REORDERED
) &&
393 section
== 0) /* can't validate section this way */
396 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
400 for (tpst
= pst
; tpst
!= NULL
; tpst
= tpst
->next
)
402 if (pc
>= tpst
->textlow
&& pc
< tpst
->texthigh
)
404 struct partial_symbol
*p
;
406 p
= find_pc_sect_psymbol (tpst
, pc
, section
);
408 && SYMBOL_VALUE_ADDRESS (p
)
409 == SYMBOL_VALUE_ADDRESS (msymbol
))
419 /* Find which partial symtab contains PC. Return 0 if none.
420 Backward compatibility, no section */
422 struct partial_symtab
*
423 find_pc_psymtab (CORE_ADDR pc
)
425 return find_pc_sect_psymtab (pc
, find_pc_mapped_section (pc
));
428 /* Find which partial symbol within a psymtab matches PC and SECTION.
429 Return 0 if none. Check all psymtabs if PSYMTAB is 0. */
431 struct partial_symbol
*
432 find_pc_sect_psymbol (struct partial_symtab
*psymtab
, CORE_ADDR pc
,
435 struct partial_symbol
*best
= NULL
, *p
, **pp
;
439 psymtab
= find_pc_sect_psymtab (pc
, section
);
443 /* Cope with programs that start at address 0 */
444 best_pc
= (psymtab
->textlow
!= 0) ? psymtab
->textlow
- 1 : 0;
446 /* Search the global symbols as well as the static symbols, so that
447 find_pc_partial_function doesn't use a minimal symbol and thus
448 cache a bad endaddr. */
449 for (pp
= psymtab
->objfile
->global_psymbols
.list
+ psymtab
->globals_offset
;
450 (pp
- (psymtab
->objfile
->global_psymbols
.list
+ psymtab
->globals_offset
)
451 < psymtab
->n_global_syms
);
455 if (SYMBOL_NAMESPACE (p
) == VAR_NAMESPACE
456 && SYMBOL_CLASS (p
) == LOC_BLOCK
457 && pc
>= SYMBOL_VALUE_ADDRESS (p
)
458 && (SYMBOL_VALUE_ADDRESS (p
) > best_pc
459 || (psymtab
->textlow
== 0
460 && best_pc
== 0 && SYMBOL_VALUE_ADDRESS (p
) == 0)))
462 if (section
) /* match on a specific section */
464 fixup_psymbol_section (p
, psymtab
->objfile
);
465 if (SYMBOL_BFD_SECTION (p
) != section
)
468 best_pc
= SYMBOL_VALUE_ADDRESS (p
);
473 for (pp
= psymtab
->objfile
->static_psymbols
.list
+ psymtab
->statics_offset
;
474 (pp
- (psymtab
->objfile
->static_psymbols
.list
+ psymtab
->statics_offset
)
475 < psymtab
->n_static_syms
);
479 if (SYMBOL_NAMESPACE (p
) == VAR_NAMESPACE
480 && SYMBOL_CLASS (p
) == LOC_BLOCK
481 && pc
>= SYMBOL_VALUE_ADDRESS (p
)
482 && (SYMBOL_VALUE_ADDRESS (p
) > best_pc
483 || (psymtab
->textlow
== 0
484 && best_pc
== 0 && SYMBOL_VALUE_ADDRESS (p
) == 0)))
486 if (section
) /* match on a specific section */
488 fixup_psymbol_section (p
, psymtab
->objfile
);
489 if (SYMBOL_BFD_SECTION (p
) != section
)
492 best_pc
= SYMBOL_VALUE_ADDRESS (p
);
500 /* Find which partial symbol within a psymtab matches PC. Return 0 if none.
501 Check all psymtabs if PSYMTAB is 0. Backwards compatibility, no section. */
503 struct partial_symbol
*
504 find_pc_psymbol (struct partial_symtab
*psymtab
, CORE_ADDR pc
)
506 return find_pc_sect_psymbol (psymtab
, pc
, find_pc_mapped_section (pc
));
509 /* Debug symbols usually don't have section information. We need to dig that
510 out of the minimal symbols and stash that in the debug symbol. */
513 fixup_section (struct general_symbol_info
*ginfo
, struct objfile
*objfile
)
515 struct minimal_symbol
*msym
;
516 msym
= lookup_minimal_symbol (ginfo
->name
, NULL
, objfile
);
520 ginfo
->bfd_section
= SYMBOL_BFD_SECTION (msym
);
521 ginfo
->section
= SYMBOL_SECTION (msym
);
526 fixup_symbol_section (struct symbol
*sym
, struct objfile
*objfile
)
531 if (SYMBOL_BFD_SECTION (sym
))
534 fixup_section (&sym
->ginfo
, objfile
);
539 struct partial_symbol
*
540 fixup_psymbol_section (struct partial_symbol
*psym
, struct objfile
*objfile
)
545 if (SYMBOL_BFD_SECTION (psym
))
548 fixup_section (&psym
->ginfo
, objfile
);
553 /* Find the definition for a specified symbol name NAME
554 in namespace NAMESPACE, visible from lexical block BLOCK.
555 Returns the struct symbol pointer, or zero if no symbol is found.
556 If SYMTAB is non-NULL, store the symbol table in which the
557 symbol was found there, or NULL if not found.
558 C++: if IS_A_FIELD_OF_THIS is nonzero on entry, check to see if
559 NAME is a field of the current implied argument `this'. If so set
560 *IS_A_FIELD_OF_THIS to 1, otherwise set it to zero.
561 BLOCK_FOUND is set to the block in which NAME is found (in the case of
562 a field of `this', value_of_this sets BLOCK_FOUND to the proper value.) */
564 /* This function has a bunch of loops in it and it would seem to be
565 attractive to put in some QUIT's (though I'm not really sure
566 whether it can run long enough to be really important). But there
567 are a few calls for which it would appear to be bad news to quit
568 out of here: find_proc_desc in alpha-tdep.c and mips-tdep.c, and
569 nindy_frame_chain_valid in nindy-tdep.c. (Note that there is C++
570 code below which can error(), but that probably doesn't affect
571 these calls since they are looking for a known variable and thus
572 can probably assume it will never hit the C++ code). */
575 lookup_symbol (const char *name
, register const struct block
*block
,
576 const namespace_enum
namespace, int *is_a_field_of_this
,
577 struct symtab
**symtab
)
579 register struct symbol
*sym
;
580 register struct symtab
*s
= NULL
;
581 register struct partial_symtab
*ps
;
582 struct blockvector
*bv
;
583 register struct objfile
*objfile
= NULL
;
584 register struct block
*b
;
585 register struct minimal_symbol
*msymbol
;
587 if (case_sensitivity
== case_sensitive_off
)
593 copy
= (char *) alloca (len
+ 1);
594 for (i
= 0; i
< len
; i
++)
595 copy
[i
] = tolower (name
[i
]);
600 /* Search specified block and its superiors. */
604 sym
= lookup_block_symbol (block
, name
, namespace);
610 /* Search the list of symtabs for one which contains the
611 address of the start of this block. */
612 ALL_SYMTABS (objfile
, s
)
614 bv
= BLOCKVECTOR (s
);
615 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
616 if (BLOCK_START (b
) <= BLOCK_START (block
)
617 && BLOCK_END (b
) > BLOCK_START (block
))
624 return fixup_symbol_section (sym
, objfile
);
626 block
= BLOCK_SUPERBLOCK (block
);
629 /* FIXME: this code is never executed--block is always NULL at this
630 point. What is it trying to do, anyway? We already should have
631 checked the STATIC_BLOCK above (it is the superblock of top-level
632 blocks). Why is VAR_NAMESPACE special-cased? */
633 /* Don't need to mess with the psymtabs; if we have a block,
634 that file is read in. If we don't, then we deal later with
635 all the psymtab stuff that needs checking. */
636 /* Note (RT): The following never-executed code looks unnecessary to me also.
637 * If we change the code to use the original (passed-in)
638 * value of 'block', we could cause it to execute, but then what
639 * would it do? The STATIC_BLOCK of the symtab containing the passed-in
640 * 'block' was already searched by the above code. And the STATIC_BLOCK's
641 * of *other* symtabs (those files not containing 'block' lexically)
642 * should not contain 'block' address-wise. So we wouldn't expect this
643 * code to find any 'sym''s that were not found above. I vote for
644 * deleting the following paragraph of code.
646 if (namespace == VAR_NAMESPACE
&& block
!= NULL
)
649 /* Find the right symtab. */
650 ALL_SYMTABS (objfile
, s
)
652 bv
= BLOCKVECTOR (s
);
653 b
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
654 if (BLOCK_START (b
) <= BLOCK_START (block
)
655 && BLOCK_END (b
) > BLOCK_START (block
))
657 sym
= lookup_block_symbol (b
, name
, VAR_NAMESPACE
);
663 return fixup_symbol_section (sym
, objfile
);
670 /* C++: If requested to do so by the caller,
671 check to see if NAME is a field of `this'. */
672 if (is_a_field_of_this
)
674 struct value
*v
= value_of_this (0);
676 *is_a_field_of_this
= 0;
677 if (v
&& check_field (v
, name
))
679 *is_a_field_of_this
= 1;
686 /* Now search all global blocks. Do the symtab's first, then
687 check the psymtab's. If a psymtab indicates the existence
688 of the desired name as a global, then do psymtab-to-symtab
689 conversion on the fly and return the found symbol. */
691 ALL_SYMTABS (objfile
, s
)
693 bv
= BLOCKVECTOR (s
);
694 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
695 sym
= lookup_block_symbol (block
, name
, namespace);
701 return fixup_symbol_section (sym
, objfile
);
707 /* Check for the possibility of the symbol being a function or
708 a mangled variable that is stored in one of the minimal symbol tables.
709 Eventually, all global symbols might be resolved in this way. */
711 if (namespace == VAR_NAMESPACE
)
713 msymbol
= lookup_minimal_symbol (name
, NULL
, NULL
);
716 s
= find_pc_sect_symtab (SYMBOL_VALUE_ADDRESS (msymbol
),
717 SYMBOL_BFD_SECTION (msymbol
));
720 /* This is a function which has a symtab for its address. */
721 bv
= BLOCKVECTOR (s
);
722 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
723 sym
= lookup_block_symbol (block
, SYMBOL_NAME (msymbol
),
725 /* We kept static functions in minimal symbol table as well as
726 in static scope. We want to find them in the symbol table. */
729 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
730 sym
= lookup_block_symbol (block
, SYMBOL_NAME (msymbol
),
734 /* sym == 0 if symbol was found in the minimal symbol table
735 but not in the symtab.
736 Return 0 to use the msymbol definition of "foo_".
738 This happens for Fortran "foo_" symbols,
739 which are "foo" in the symtab.
741 This can also happen if "asm" is used to make a
742 regular symbol but not a debugging symbol, e.g.
749 return fixup_symbol_section (sym
, objfile
);
751 else if (MSYMBOL_TYPE (msymbol
) != mst_text
752 && MSYMBOL_TYPE (msymbol
) != mst_file_text
753 && !STREQ (name
, SYMBOL_NAME (msymbol
)))
755 /* This is a mangled variable, look it up by its
757 return lookup_symbol (SYMBOL_NAME (msymbol
), block
,
758 namespace, is_a_field_of_this
, symtab
);
760 /* There are no debug symbols for this file, or we are looking
761 for an unmangled variable.
762 Try to find a matching static symbol below. */
768 ALL_PSYMTABS (objfile
, ps
)
770 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, 1, namespace))
772 s
= PSYMTAB_TO_SYMTAB (ps
);
773 bv
= BLOCKVECTOR (s
);
774 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
775 sym
= lookup_block_symbol (block
, name
, namespace);
778 /* This shouldn't be necessary, but as a last resort
779 * try looking in the statics even though the psymtab
780 * claimed the symbol was global. It's possible that
781 * the psymtab gets it wrong in some cases.
783 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
784 sym
= lookup_block_symbol (block
, name
, namespace);
786 error ("Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\
787 %s may be an inlined function, or may be a template function\n\
788 (if a template, try specifying an instantiation: %s<type>).",
789 name
, ps
->filename
, name
, name
);
793 return fixup_symbol_section (sym
, objfile
);
797 /* Now search all static file-level symbols.
798 Not strictly correct, but more useful than an error.
799 Do the symtabs first, then check the psymtabs.
800 If a psymtab indicates the existence
801 of the desired name as a file-level static, then do psymtab-to-symtab
802 conversion on the fly and return the found symbol. */
804 ALL_SYMTABS (objfile
, s
)
806 bv
= BLOCKVECTOR (s
);
807 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
808 sym
= lookup_block_symbol (block
, name
, namespace);
814 return fixup_symbol_section (sym
, objfile
);
818 ALL_PSYMTABS (objfile
, ps
)
820 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, 0, namespace))
822 s
= PSYMTAB_TO_SYMTAB (ps
);
823 bv
= BLOCKVECTOR (s
);
824 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
825 sym
= lookup_block_symbol (block
, name
, namespace);
828 /* This shouldn't be necessary, but as a last resort
829 * try looking in the globals even though the psymtab
830 * claimed the symbol was static. It's possible that
831 * the psymtab gets it wrong in some cases.
833 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
834 sym
= lookup_block_symbol (block
, name
, namespace);
836 error ("Internal: static symbol `%s' found in %s psymtab but not in symtab.\n\
837 %s may be an inlined function, or may be a template function\n\
838 (if a template, try specifying an instantiation: %s<type>).",
839 name
, ps
->filename
, name
, name
);
843 return fixup_symbol_section (sym
, objfile
);
849 /* Check for the possibility of the symbol being a function or
850 a global variable that is stored in one of the minimal symbol tables.
851 The "minimal symbol table" is built from linker-supplied info.
853 RT: I moved this check to last, after the complete search of
854 the global (p)symtab's and static (p)symtab's. For HP-generated
855 symbol tables, this check was causing a premature exit from
856 lookup_symbol with NULL return, and thus messing up symbol lookups
857 of things like "c::f". It seems to me a check of the minimal
858 symbol table ought to be a last resort in any case. I'm vaguely
859 worried about the comment below which talks about FORTRAN routines "foo_"
860 though... is it saying we need to do the "minsym" check before
861 the static check in this case?
864 if (namespace == VAR_NAMESPACE
)
866 msymbol
= lookup_minimal_symbol (name
, NULL
, NULL
);
869 /* OK, we found a minimal symbol in spite of not
870 * finding any symbol. There are various possible
871 * explanations for this. One possibility is the symbol
872 * exists in code not compiled -g. Another possibility
873 * is that the 'psymtab' isn't doing its job.
874 * A third possibility, related to #2, is that we were confused
875 * by name-mangling. For instance, maybe the psymtab isn't
876 * doing its job because it only know about demangled
877 * names, but we were given a mangled name...
880 /* We first use the address in the msymbol to try to
881 * locate the appropriate symtab. Note that find_pc_symtab()
882 * has a side-effect of doing psymtab-to-symtab expansion,
883 * for the found symtab.
885 s
= find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
));
888 bv
= BLOCKVECTOR (s
);
889 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
890 sym
= lookup_block_symbol (block
, SYMBOL_NAME (msymbol
),
892 /* We kept static functions in minimal symbol table as well as
893 in static scope. We want to find them in the symbol table. */
896 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
897 sym
= lookup_block_symbol (block
, SYMBOL_NAME (msymbol
),
900 /* If we found one, return it */
908 /* If we get here with sym == 0, the symbol was
909 found in the minimal symbol table
910 but not in the symtab.
911 Fall through and return 0 to use the msymbol
912 definition of "foo_".
913 (Note that outer code generally follows up a call
914 to this routine with a call to lookup_minimal_symbol(),
915 so a 0 return means we'll just flow into that other routine).
917 This happens for Fortran "foo_" symbols,
918 which are "foo" in the symtab.
920 This can also happen if "asm" is used to make a
921 regular symbol but not a debugging symbol, e.g.
927 /* If the lookup-by-address fails, try repeating the
928 * entire lookup process with the symbol name from
929 * the msymbol (if different from the original symbol name).
931 else if (MSYMBOL_TYPE (msymbol
) != mst_text
932 && MSYMBOL_TYPE (msymbol
) != mst_file_text
933 && !STREQ (name
, SYMBOL_NAME (msymbol
)))
935 return lookup_symbol (SYMBOL_NAME (msymbol
), block
,
936 namespace, is_a_field_of_this
, symtab
);
948 /* Look, in partial_symtab PST, for symbol NAME. Check the global
949 symbols if GLOBAL, the static symbols if not */
951 static struct partial_symbol
*
952 lookup_partial_symbol (struct partial_symtab
*pst
, const char *name
, int global
,
953 namespace_enum
namespace)
955 struct partial_symbol
*temp
;
956 struct partial_symbol
**start
, **psym
;
957 struct partial_symbol
**top
, **bottom
, **center
;
958 int length
= (global
? pst
->n_global_syms
: pst
->n_static_syms
);
959 int do_linear_search
= 1;
966 pst
->objfile
->global_psymbols
.list
+ pst
->globals_offset
:
967 pst
->objfile
->static_psymbols
.list
+ pst
->statics_offset
);
969 if (global
) /* This means we can use a binary search. */
971 do_linear_search
= 0;
973 /* Binary search. This search is guaranteed to end with center
974 pointing at the earliest partial symbol with the correct
975 name. At that point *all* partial symbols with that name
976 will be checked against the correct namespace. */
979 top
= start
+ length
- 1;
982 center
= bottom
+ (top
- bottom
) / 2;
985 if (!do_linear_search
986 && (SYMBOL_LANGUAGE (*center
) == language_java
))
988 do_linear_search
= 1;
990 if (STRCMP (SYMBOL_NAME (*center
), name
) >= 0)
999 if (!(top
== bottom
))
1002 /* djb - 2000-06-03 - Use SYMBOL_MATCHES_NAME, not a strcmp, so
1003 we don't have to force a linear search on C++. Probably holds true
1004 for JAVA as well, no way to check.*/
1005 while (SYMBOL_MATCHES_NAME (*top
,name
))
1007 if (SYMBOL_NAMESPACE (*top
) == namespace)
1015 /* Can't use a binary search or else we found during the binary search that
1016 we should also do a linear search. */
1018 if (do_linear_search
)
1020 for (psym
= start
; psym
< start
+ length
; psym
++)
1022 if (namespace == SYMBOL_NAMESPACE (*psym
))
1024 if (SYMBOL_MATCHES_NAME (*psym
, name
))
1035 /* Look up a type named NAME in the struct_namespace. The type returned
1036 must not be opaque -- i.e., must have at least one field defined
1038 This code was modelled on lookup_symbol -- the parts not relevant to looking
1039 up types were just left out. In particular it's assumed here that types
1040 are available in struct_namespace and only at file-static or global blocks. */
1044 lookup_transparent_type (const char *name
)
1046 register struct symbol
*sym
;
1047 register struct symtab
*s
= NULL
;
1048 register struct partial_symtab
*ps
;
1049 struct blockvector
*bv
;
1050 register struct objfile
*objfile
;
1051 register struct block
*block
;
1053 /* Now search all the global symbols. Do the symtab's first, then
1054 check the psymtab's. If a psymtab indicates the existence
1055 of the desired name as a global, then do psymtab-to-symtab
1056 conversion on the fly and return the found symbol. */
1058 ALL_SYMTABS (objfile
, s
)
1060 bv
= BLOCKVECTOR (s
);
1061 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1062 sym
= lookup_block_symbol (block
, name
, STRUCT_NAMESPACE
);
1063 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1065 return SYMBOL_TYPE (sym
);
1069 ALL_PSYMTABS (objfile
, ps
)
1071 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, 1, STRUCT_NAMESPACE
))
1073 s
= PSYMTAB_TO_SYMTAB (ps
);
1074 bv
= BLOCKVECTOR (s
);
1075 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1076 sym
= lookup_block_symbol (block
, name
, STRUCT_NAMESPACE
);
1079 /* This shouldn't be necessary, but as a last resort
1080 * try looking in the statics even though the psymtab
1081 * claimed the symbol was global. It's possible that
1082 * the psymtab gets it wrong in some cases.
1084 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1085 sym
= lookup_block_symbol (block
, name
, STRUCT_NAMESPACE
);
1087 error ("Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\
1088 %s may be an inlined function, or may be a template function\n\
1089 (if a template, try specifying an instantiation: %s<type>).",
1090 name
, ps
->filename
, name
, name
);
1092 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1093 return SYMBOL_TYPE (sym
);
1097 /* Now search the static file-level symbols.
1098 Not strictly correct, but more useful than an error.
1099 Do the symtab's first, then
1100 check the psymtab's. If a psymtab indicates the existence
1101 of the desired name as a file-level static, then do psymtab-to-symtab
1102 conversion on the fly and return the found symbol.
1105 ALL_SYMTABS (objfile
, s
)
1107 bv
= BLOCKVECTOR (s
);
1108 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1109 sym
= lookup_block_symbol (block
, name
, STRUCT_NAMESPACE
);
1110 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1112 return SYMBOL_TYPE (sym
);
1116 ALL_PSYMTABS (objfile
, ps
)
1118 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, 0, STRUCT_NAMESPACE
))
1120 s
= PSYMTAB_TO_SYMTAB (ps
);
1121 bv
= BLOCKVECTOR (s
);
1122 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1123 sym
= lookup_block_symbol (block
, name
, STRUCT_NAMESPACE
);
1126 /* This shouldn't be necessary, but as a last resort
1127 * try looking in the globals even though the psymtab
1128 * claimed the symbol was static. It's possible that
1129 * the psymtab gets it wrong in some cases.
1131 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1132 sym
= lookup_block_symbol (block
, name
, STRUCT_NAMESPACE
);
1134 error ("Internal: static symbol `%s' found in %s psymtab but not in symtab.\n\
1135 %s may be an inlined function, or may be a template function\n\
1136 (if a template, try specifying an instantiation: %s<type>).",
1137 name
, ps
->filename
, name
, name
);
1139 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1140 return SYMBOL_TYPE (sym
);
1143 return (struct type
*) 0;
1147 /* Find the psymtab containing main(). */
1148 /* FIXME: What about languages without main() or specially linked
1149 executables that have no main() ? */
1151 struct partial_symtab
*
1152 find_main_psymtab (void)
1154 register struct partial_symtab
*pst
;
1155 register struct objfile
*objfile
;
1157 ALL_PSYMTABS (objfile
, pst
)
1159 if (lookup_partial_symbol (pst
, "main", 1, VAR_NAMESPACE
))
1167 /* Search BLOCK for symbol NAME in NAMESPACE.
1169 Note that if NAME is the demangled form of a C++ symbol, we will fail
1170 to find a match during the binary search of the non-encoded names, but
1171 for now we don't worry about the slight inefficiency of looking for
1172 a match we'll never find, since it will go pretty quick. Once the
1173 binary search terminates, we drop through and do a straight linear
1174 search on the symbols. Each symbol which is marked as being a C++
1175 symbol (language_cplus set) has both the encoded and non-encoded names
1176 tested for a match. */
1179 lookup_block_symbol (register const struct block
*block
, const char *name
,
1180 const namespace_enum
namespace)
1182 register int bot
, top
, inc
;
1183 register struct symbol
*sym
;
1184 register struct symbol
*sym_found
= NULL
;
1185 register int do_linear_search
= 1;
1187 /* If the blocks's symbols were sorted, start with a binary search. */
1189 if (BLOCK_SHOULD_SORT (block
))
1191 /* Reset the linear search flag so if the binary search fails, we
1192 won't do the linear search once unless we find some reason to
1193 do so, such as finding a C++ symbol during the binary search.
1194 Note that for C++ modules, ALL the symbols in a block should
1195 end up marked as C++ symbols. */
1197 do_linear_search
= 0;
1198 top
= BLOCK_NSYMS (block
);
1201 /* Advance BOT to not far before the first symbol whose name is NAME. */
1205 inc
= (top
- bot
+ 1);
1206 /* No need to keep binary searching for the last few bits worth. */
1211 inc
= (inc
>> 1) + bot
;
1212 sym
= BLOCK_SYM (block
, inc
);
1213 if (!do_linear_search
1214 && (SYMBOL_LANGUAGE (sym
) == language_cplus
1215 || SYMBOL_LANGUAGE (sym
) == language_java
1218 do_linear_search
= 1;
1220 if (SYMBOL_NAME (sym
)[0] < name
[0])
1224 else if (SYMBOL_NAME (sym
)[0] > name
[0])
1228 else if (STRCMP (SYMBOL_NAME (sym
), name
) < 0)
1238 /* Now scan forward until we run out of symbols, find one whose
1239 name is greater than NAME, or find one we want. If there is
1240 more than one symbol with the right name and namespace, we
1241 return the first one; I believe it is now impossible for us
1242 to encounter two symbols with the same name and namespace
1243 here, because blocks containing argument symbols are no
1246 top
= BLOCK_NSYMS (block
);
1249 sym
= BLOCK_SYM (block
, bot
);
1250 inc
= SYMBOL_NAME (sym
)[0] - name
[0];
1253 inc
= STRCMP (SYMBOL_NAME (sym
), name
);
1255 if (inc
== 0 && SYMBOL_NAMESPACE (sym
) == namespace)
1267 /* Here if block isn't sorted, or we fail to find a match during the
1268 binary search above. If during the binary search above, we find a
1269 symbol which is a C++ symbol, then we have re-enabled the linear
1270 search flag which was reset when starting the binary search.
1272 This loop is equivalent to the loop above, but hacked greatly for speed.
1274 Note that parameter symbols do not always show up last in the
1275 list; this loop makes sure to take anything else other than
1276 parameter symbols first; it only uses parameter symbols as a
1277 last resort. Note that this only takes up extra computation
1280 if (do_linear_search
)
1282 top
= BLOCK_NSYMS (block
);
1286 sym
= BLOCK_SYM (block
, bot
);
1287 if (SYMBOL_NAMESPACE (sym
) == namespace &&
1288 SYMBOL_MATCHES_NAME (sym
, name
))
1290 /* If SYM has aliases, then use any alias that is active
1291 at the current PC. If no alias is active at the current
1292 PC, then use the main symbol.
1294 ?!? Is checking the current pc correct? Is this routine
1295 ever called to look up a symbol from another context?
1297 FIXME: No, it's not correct. If someone sets a
1298 conditional breakpoint at an address, then the
1299 breakpoint's `struct expression' should refer to the
1300 `struct symbol' appropriate for the breakpoint's
1301 address, which may not be the PC.
1303 Even if it were never called from another context,
1304 it's totally bizarre for lookup_symbol's behavior to
1305 depend on the value of the inferior's current PC. We
1306 should pass in the appropriate PC as well as the
1307 block. The interface to lookup_symbol should change
1308 to require the caller to provide a PC. */
1310 if (SYMBOL_ALIASES (sym
))
1311 sym
= find_active_alias (sym
, read_pc ());
1314 if (SYMBOL_CLASS (sym
) != LOC_ARG
&&
1315 SYMBOL_CLASS (sym
) != LOC_LOCAL_ARG
&&
1316 SYMBOL_CLASS (sym
) != LOC_REF_ARG
&&
1317 SYMBOL_CLASS (sym
) != LOC_REGPARM
&&
1318 SYMBOL_CLASS (sym
) != LOC_REGPARM_ADDR
&&
1319 SYMBOL_CLASS (sym
) != LOC_BASEREG_ARG
)
1327 return (sym_found
); /* Will be NULL if not found. */
1330 /* Given a main symbol SYM and ADDR, search through the alias
1331 list to determine if an alias is active at ADDR and return
1334 If no alias is active, then return SYM. */
1336 static struct symbol
*
1337 find_active_alias (struct symbol
*sym
, CORE_ADDR addr
)
1339 struct range_list
*r
;
1340 struct alias_list
*aliases
;
1342 /* If we have aliases, check them first. */
1343 aliases
= SYMBOL_ALIASES (sym
);
1347 if (!SYMBOL_RANGES (aliases
->sym
))
1348 return aliases
->sym
;
1349 for (r
= SYMBOL_RANGES (aliases
->sym
); r
; r
= r
->next
)
1351 if (r
->start
<= addr
&& r
->end
> addr
)
1352 return aliases
->sym
;
1354 aliases
= aliases
->next
;
1357 /* Nothing found, return the main symbol. */
1362 /* Return the symbol for the function which contains a specified
1363 lexical block, described by a struct block BL. */
1366 block_function (struct block
*bl
)
1368 while (BLOCK_FUNCTION (bl
) == 0 && BLOCK_SUPERBLOCK (bl
) != 0)
1369 bl
= BLOCK_SUPERBLOCK (bl
);
1371 return BLOCK_FUNCTION (bl
);
1374 /* Find the symtab associated with PC and SECTION. Look through the
1375 psymtabs and read in another symtab if necessary. */
1378 find_pc_sect_symtab (CORE_ADDR pc
, asection
*section
)
1380 register struct block
*b
;
1381 struct blockvector
*bv
;
1382 register struct symtab
*s
= NULL
;
1383 register struct symtab
*best_s
= NULL
;
1384 register struct partial_symtab
*ps
;
1385 register struct objfile
*objfile
;
1386 CORE_ADDR distance
= 0;
1388 /* Search all symtabs for the one whose file contains our address, and which
1389 is the smallest of all the ones containing the address. This is designed
1390 to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000
1391 and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from
1392 0x1000-0x4000, but for address 0x2345 we want to return symtab b.
1394 This happens for native ecoff format, where code from included files
1395 gets its own symtab. The symtab for the included file should have
1396 been read in already via the dependency mechanism.
1397 It might be swifter to create several symtabs with the same name
1398 like xcoff does (I'm not sure).
1400 It also happens for objfiles that have their functions reordered.
1401 For these, the symtab we are looking for is not necessarily read in. */
1403 ALL_SYMTABS (objfile
, s
)
1405 bv
= BLOCKVECTOR (s
);
1406 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1408 if (BLOCK_START (b
) <= pc
1409 && BLOCK_END (b
) > pc
1411 || BLOCK_END (b
) - BLOCK_START (b
) < distance
))
1413 /* For an objfile that has its functions reordered,
1414 find_pc_psymtab will find the proper partial symbol table
1415 and we simply return its corresponding symtab. */
1416 /* In order to better support objfiles that contain both
1417 stabs and coff debugging info, we continue on if a psymtab
1419 if ((objfile
->flags
& OBJF_REORDERED
) && objfile
->psymtabs
)
1421 ps
= find_pc_sect_psymtab (pc
, section
);
1423 return PSYMTAB_TO_SYMTAB (ps
);
1429 for (i
= 0; i
< b
->nsyms
; i
++)
1431 fixup_symbol_section (b
->sym
[i
], objfile
);
1432 if (section
== SYMBOL_BFD_SECTION (b
->sym
[i
]))
1436 continue; /* no symbol in this symtab matches section */
1438 distance
= BLOCK_END (b
) - BLOCK_START (b
);
1447 ps
= find_pc_sect_psymtab (pc
, section
);
1451 /* Might want to error() here (in case symtab is corrupt and
1452 will cause a core dump), but maybe we can successfully
1453 continue, so let's not. */
1455 (Internal error: pc 0x%s in read in psymtab, but not in symtab.)\n",
1457 s
= PSYMTAB_TO_SYMTAB (ps
);
1462 /* Find the symtab associated with PC. Look through the psymtabs and
1463 read in another symtab if necessary. Backward compatibility, no section */
1466 find_pc_symtab (CORE_ADDR pc
)
1468 return find_pc_sect_symtab (pc
, find_pc_mapped_section (pc
));
1474 /* Find the closest symbol value (of any sort -- function or variable)
1475 for a given address value. Slow but complete. (currently unused,
1476 mainly because it is too slow. We could fix it if each symtab and
1477 psymtab had contained in it the addresses ranges of each of its
1478 sections, which also would be required to make things like "info
1479 line *0x2345" cause psymtabs to be converted to symtabs). */
1482 find_addr_symbol (CORE_ADDR addr
, struct symtab
**symtabp
, CORE_ADDR
*symaddrp
)
1484 struct symtab
*symtab
, *best_symtab
;
1485 struct objfile
*objfile
;
1486 register int bot
, top
;
1487 register struct symbol
*sym
;
1488 register CORE_ADDR sym_addr
;
1489 struct block
*block
;
1492 /* Info on best symbol seen so far */
1494 register CORE_ADDR best_sym_addr
= 0;
1495 struct symbol
*best_sym
= 0;
1497 /* FIXME -- we should pull in all the psymtabs, too! */
1498 ALL_SYMTABS (objfile
, symtab
)
1500 /* Search the global and static blocks in this symtab for
1501 the closest symbol-address to the desired address. */
1503 for (blocknum
= GLOBAL_BLOCK
; blocknum
<= STATIC_BLOCK
; blocknum
++)
1506 block
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (symtab
), blocknum
);
1507 top
= BLOCK_NSYMS (block
);
1508 for (bot
= 0; bot
< top
; bot
++)
1510 sym
= BLOCK_SYM (block
, bot
);
1511 switch (SYMBOL_CLASS (sym
))
1515 sym_addr
= SYMBOL_VALUE_ADDRESS (sym
);
1519 sym_addr
= SYMBOL_VALUE_ADDRESS (sym
);
1520 /* An indirect symbol really lives at *sym_addr,
1521 * so an indirection needs to be done.
1522 * However, I am leaving this commented out because it's
1523 * expensive, and it's possible that symbolization
1524 * could be done without an active process (in
1525 * case this read_memory will fail). RT
1526 sym_addr = read_memory_unsigned_integer
1527 (sym_addr, TARGET_PTR_BIT / TARGET_CHAR_BIT);
1532 sym_addr
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
1539 if (sym_addr
<= addr
)
1540 if (sym_addr
> best_sym_addr
)
1542 /* Quit if we found an exact match. */
1544 best_sym_addr
= sym_addr
;
1545 best_symtab
= symtab
;
1546 if (sym_addr
== addr
)
1555 *symtabp
= best_symtab
;
1557 *symaddrp
= best_sym_addr
;
1562 /* Find the source file and line number for a given PC value and section.
1563 Return a structure containing a symtab pointer, a line number,
1564 and a pc range for the entire source line.
1565 The value's .pc field is NOT the specified pc.
1566 NOTCURRENT nonzero means, if specified pc is on a line boundary,
1567 use the line that ends there. Otherwise, in that case, the line
1568 that begins there is used. */
1570 /* The big complication here is that a line may start in one file, and end just
1571 before the start of another file. This usually occurs when you #include
1572 code in the middle of a subroutine. To properly find the end of a line's PC
1573 range, we must search all symtabs associated with this compilation unit, and
1574 find the one whose first PC is closer than that of the next line in this
1577 /* If it's worth the effort, we could be using a binary search. */
1579 struct symtab_and_line
1580 find_pc_sect_line (CORE_ADDR pc
, struct sec
*section
, int notcurrent
)
1583 register struct linetable
*l
;
1586 register struct linetable_entry
*item
;
1587 struct symtab_and_line val
;
1588 struct blockvector
*bv
;
1589 struct minimal_symbol
*msymbol
;
1590 struct minimal_symbol
*mfunsym
;
1592 /* Info on best line seen so far, and where it starts, and its file. */
1594 struct linetable_entry
*best
= NULL
;
1595 CORE_ADDR best_end
= 0;
1596 struct symtab
*best_symtab
= 0;
1598 /* Store here the first line number
1599 of a file which contains the line at the smallest pc after PC.
1600 If we don't find a line whose range contains PC,
1601 we will use a line one less than this,
1602 with a range from the start of that file to the first line's pc. */
1603 struct linetable_entry
*alt
= NULL
;
1604 struct symtab
*alt_symtab
= 0;
1606 /* Info on best line seen in this file. */
1608 struct linetable_entry
*prev
;
1610 /* If this pc is not from the current frame,
1611 it is the address of the end of a call instruction.
1612 Quite likely that is the start of the following statement.
1613 But what we want is the statement containing the instruction.
1614 Fudge the pc to make sure we get that. */
1616 INIT_SAL (&val
); /* initialize to zeroes */
1621 /* elz: added this because this function returned the wrong
1622 information if the pc belongs to a stub (import/export)
1623 to call a shlib function. This stub would be anywhere between
1624 two functions in the target, and the line info was erroneously
1625 taken to be the one of the line before the pc.
1627 /* RT: Further explanation:
1629 * We have stubs (trampolines) inserted between procedures.
1631 * Example: "shr1" exists in a shared library, and a "shr1" stub also
1632 * exists in the main image.
1634 * In the minimal symbol table, we have a bunch of symbols
1635 * sorted by start address. The stubs are marked as "trampoline",
1636 * the others appear as text. E.g.:
1638 * Minimal symbol table for main image
1639 * main: code for main (text symbol)
1640 * shr1: stub (trampoline symbol)
1641 * foo: code for foo (text symbol)
1643 * Minimal symbol table for "shr1" image:
1645 * shr1: code for shr1 (text symbol)
1648 * So the code below is trying to detect if we are in the stub
1649 * ("shr1" stub), and if so, find the real code ("shr1" trampoline),
1650 * and if found, do the symbolization from the real-code address
1651 * rather than the stub address.
1653 * Assumptions being made about the minimal symbol table:
1654 * 1. lookup_minimal_symbol_by_pc() will return a trampoline only
1655 * if we're really in the trampoline. If we're beyond it (say
1656 * we're in "foo" in the above example), it'll have a closer
1657 * symbol (the "foo" text symbol for example) and will not
1658 * return the trampoline.
1659 * 2. lookup_minimal_symbol_text() will find a real text symbol
1660 * corresponding to the trampoline, and whose address will
1661 * be different than the trampoline address. I put in a sanity
1662 * check for the address being the same, to avoid an
1663 * infinite recursion.
1665 msymbol
= lookup_minimal_symbol_by_pc (pc
);
1666 if (msymbol
!= NULL
)
1667 if (MSYMBOL_TYPE (msymbol
) == mst_solib_trampoline
)
1669 mfunsym
= lookup_minimal_symbol_text (SYMBOL_NAME (msymbol
), NULL
, NULL
);
1670 if (mfunsym
== NULL
)
1671 /* I eliminated this warning since it is coming out
1672 * in the following situation:
1673 * gdb shmain // test program with shared libraries
1674 * (gdb) break shr1 // function in shared lib
1675 * Warning: In stub for ...
1676 * In the above situation, the shared lib is not loaded yet,
1677 * so of course we can't find the real func/line info,
1678 * but the "break" still works, and the warning is annoying.
1679 * So I commented out the warning. RT */
1680 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_NAME(msymbol)) */ ;
1682 else if (SYMBOL_VALUE (mfunsym
) == SYMBOL_VALUE (msymbol
))
1683 /* Avoid infinite recursion */
1684 /* See above comment about why warning is commented out */
1685 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_NAME(msymbol)) */ ;
1688 return find_pc_line (SYMBOL_VALUE (mfunsym
), 0);
1692 s
= find_pc_sect_symtab (pc
, section
);
1695 /* if no symbol information, return previous pc */
1702 bv
= BLOCKVECTOR (s
);
1704 /* Look at all the symtabs that share this blockvector.
1705 They all have the same apriori range, that we found was right;
1706 but they have different line tables. */
1708 for (; s
&& BLOCKVECTOR (s
) == bv
; s
= s
->next
)
1710 /* Find the best line in this symtab. */
1717 /* I think len can be zero if the symtab lacks line numbers
1718 (e.g. gcc -g1). (Either that or the LINETABLE is NULL;
1719 I'm not sure which, and maybe it depends on the symbol
1725 item
= l
->item
; /* Get first line info */
1727 /* Is this file's first line closer than the first lines of other files?
1728 If so, record this file, and its first line, as best alternate. */
1729 if (item
->pc
> pc
&& (!alt
|| item
->pc
< alt
->pc
))
1735 for (i
= 0; i
< len
; i
++, item
++)
1737 /* Leave prev pointing to the linetable entry for the last line
1738 that started at or before PC. */
1745 /* At this point, prev points at the line whose start addr is <= pc, and
1746 item points at the next line. If we ran off the end of the linetable
1747 (pc >= start of the last line), then prev == item. If pc < start of
1748 the first line, prev will not be set. */
1750 /* Is this file's best line closer than the best in the other files?
1751 If so, record this file, and its best line, as best so far. */
1753 if (prev
&& (!best
|| prev
->pc
> best
->pc
))
1757 /* If another line is in the linetable, and its PC is closer
1758 than the best_end we currently have, take it as best_end. */
1759 if (i
< len
&& (best_end
== 0 || best_end
> item
->pc
))
1760 best_end
= item
->pc
;
1767 { /* If we didn't find any line # info, just
1773 val
.symtab
= alt_symtab
;
1774 val
.line
= alt
->line
- 1;
1776 /* Don't return line 0, that means that we didn't find the line. */
1780 val
.pc
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
1786 val
.symtab
= best_symtab
;
1787 val
.line
= best
->line
;
1789 if (best_end
&& (!alt
|| best_end
< alt
->pc
))
1794 val
.end
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
1796 val
.section
= section
;
1800 /* Backward compatibility (no section) */
1802 struct symtab_and_line
1803 find_pc_line (CORE_ADDR pc
, int notcurrent
)
1807 section
= find_pc_overlay (pc
);
1808 if (pc_in_unmapped_range (pc
, section
))
1809 pc
= overlay_mapped_address (pc
, section
);
1810 return find_pc_sect_line (pc
, section
, notcurrent
);
1814 static struct symtab
*find_line_symtab (struct symtab
*, int, int *, int *);
1816 /* Find line number LINE in any symtab whose name is the same as
1819 If found, return the symtab that contains the linetable in which it was
1820 found, set *INDEX to the index in the linetable of the best entry
1821 found, and set *EXACT_MATCH nonzero if the value returned is an
1824 If not found, return NULL. */
1826 static struct symtab
*
1827 find_line_symtab (struct symtab
*symtab
, int line
, int *index
, int *exact_match
)
1831 /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE
1835 struct linetable
*best_linetable
;
1836 struct symtab
*best_symtab
;
1838 /* First try looking it up in the given symtab. */
1839 best_linetable
= LINETABLE (symtab
);
1840 best_symtab
= symtab
;
1841 best_index
= find_line_common (best_linetable
, line
, &exact
);
1842 if (best_index
< 0 || !exact
)
1844 /* Didn't find an exact match. So we better keep looking for
1845 another symtab with the same name. In the case of xcoff,
1846 multiple csects for one source file (produced by IBM's FORTRAN
1847 compiler) produce multiple symtabs (this is unavoidable
1848 assuming csects can be at arbitrary places in memory and that
1849 the GLOBAL_BLOCK of a symtab has a begin and end address). */
1851 /* BEST is the smallest linenumber > LINE so far seen,
1852 or 0 if none has been seen so far.
1853 BEST_INDEX and BEST_LINETABLE identify the item for it. */
1856 struct objfile
*objfile
;
1859 if (best_index
>= 0)
1860 best
= best_linetable
->item
[best_index
].line
;
1864 ALL_SYMTABS (objfile
, s
)
1866 struct linetable
*l
;
1869 if (!STREQ (symtab
->filename
, s
->filename
))
1872 ind
= find_line_common (l
, line
, &exact
);
1882 if (best
== 0 || l
->item
[ind
].line
< best
)
1884 best
= l
->item
[ind
].line
;
1897 *index
= best_index
;
1899 *exact_match
= exact
;
1904 /* Set the PC value for a given source file and line number and return true.
1905 Returns zero for invalid line number (and sets the PC to 0).
1906 The source file is specified with a struct symtab. */
1909 find_line_pc (struct symtab
*symtab
, int line
, CORE_ADDR
*pc
)
1911 struct linetable
*l
;
1918 symtab
= find_line_symtab (symtab
, line
, &ind
, NULL
);
1921 l
= LINETABLE (symtab
);
1922 *pc
= l
->item
[ind
].pc
;
1929 /* Find the range of pc values in a line.
1930 Store the starting pc of the line into *STARTPTR
1931 and the ending pc (start of next line) into *ENDPTR.
1932 Returns 1 to indicate success.
1933 Returns 0 if could not find the specified line. */
1936 find_line_pc_range (struct symtab_and_line sal
, CORE_ADDR
*startptr
,
1939 CORE_ADDR startaddr
;
1940 struct symtab_and_line found_sal
;
1943 if (startaddr
== 0 && !find_line_pc (sal
.symtab
, sal
.line
, &startaddr
))
1946 /* This whole function is based on address. For example, if line 10 has
1947 two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then
1948 "info line *0x123" should say the line goes from 0x100 to 0x200
1949 and "info line *0x355" should say the line goes from 0x300 to 0x400.
1950 This also insures that we never give a range like "starts at 0x134
1951 and ends at 0x12c". */
1953 found_sal
= find_pc_sect_line (startaddr
, sal
.section
, 0);
1954 if (found_sal
.line
!= sal
.line
)
1956 /* The specified line (sal) has zero bytes. */
1957 *startptr
= found_sal
.pc
;
1958 *endptr
= found_sal
.pc
;
1962 *startptr
= found_sal
.pc
;
1963 *endptr
= found_sal
.end
;
1968 /* Given a line table and a line number, return the index into the line
1969 table for the pc of the nearest line whose number is >= the specified one.
1970 Return -1 if none is found. The value is >= 0 if it is an index.
1972 Set *EXACT_MATCH nonzero if the value returned is an exact match. */
1975 find_line_common (register struct linetable
*l
, register int lineno
,
1981 /* BEST is the smallest linenumber > LINENO so far seen,
1982 or 0 if none has been seen so far.
1983 BEST_INDEX identifies the item for it. */
1985 int best_index
= -1;
1994 for (i
= 0; i
< len
; i
++)
1996 register struct linetable_entry
*item
= &(l
->item
[i
]);
1998 if (item
->line
== lineno
)
2000 /* Return the first (lowest address) entry which matches. */
2005 if (item
->line
> lineno
&& (best
== 0 || item
->line
< best
))
2012 /* If we got here, we didn't get an exact match. */
2019 find_pc_line_pc_range (CORE_ADDR pc
, CORE_ADDR
*startptr
, CORE_ADDR
*endptr
)
2021 struct symtab_and_line sal
;
2022 sal
= find_pc_line (pc
, 0);
2025 return sal
.symtab
!= 0;
2028 /* Given a function symbol SYM, find the symtab and line for the start
2030 If the argument FUNFIRSTLINE is nonzero, we want the first line
2031 of real code inside the function. */
2033 static struct symtab_and_line
2034 find_function_start_sal (struct symbol
*sym
, int);
2036 static struct symtab_and_line
2037 find_function_start_sal (struct symbol
*sym
, int funfirstline
)
2040 struct symtab_and_line sal
;
2042 pc
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
2043 fixup_symbol_section (sym
, NULL
);
2045 { /* skip "first line" of function (which is actually its prologue) */
2046 asection
*section
= SYMBOL_BFD_SECTION (sym
);
2047 /* If function is in an unmapped overlay, use its unmapped LMA
2048 address, so that SKIP_PROLOGUE has something unique to work on */
2049 if (section_is_overlay (section
) &&
2050 !section_is_mapped (section
))
2051 pc
= overlay_unmapped_address (pc
, section
);
2053 pc
+= FUNCTION_START_OFFSET
;
2054 pc
= SKIP_PROLOGUE (pc
);
2056 /* For overlays, map pc back into its mapped VMA range */
2057 pc
= overlay_mapped_address (pc
, section
);
2059 sal
= find_pc_sect_line (pc
, SYMBOL_BFD_SECTION (sym
), 0);
2061 #ifdef PROLOGUE_FIRSTLINE_OVERLAP
2062 /* Convex: no need to suppress code on first line, if any */
2065 /* Check if SKIP_PROLOGUE left us in mid-line, and the next
2066 line is still part of the same function. */
2068 && BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)) <= sal
.end
2069 && sal
.end
< BLOCK_END (SYMBOL_BLOCK_VALUE (sym
)))
2071 /* First pc of next line */
2073 /* Recalculate the line number (might not be N+1). */
2074 sal
= find_pc_sect_line (pc
, SYMBOL_BFD_SECTION (sym
), 0);
2082 /* If P is of the form "operator[ \t]+..." where `...' is
2083 some legitimate operator text, return a pointer to the
2084 beginning of the substring of the operator text.
2085 Otherwise, return "". */
2087 operator_chars (char *p
, char **end
)
2090 if (strncmp (p
, "operator", 8))
2094 /* Don't get faked out by `operator' being part of a longer
2096 if (isalpha (*p
) || *p
== '_' || *p
== '$' || *p
== '\0')
2099 /* Allow some whitespace between `operator' and the operator symbol. */
2100 while (*p
== ' ' || *p
== '\t')
2103 /* Recognize 'operator TYPENAME'. */
2105 if (isalpha (*p
) || *p
== '_' || *p
== '$')
2107 register char *q
= p
+ 1;
2108 while (isalnum (*q
) || *q
== '_' || *q
== '$')
2133 if (p
[1] == '=' || p
[1] == p
[0])
2144 error ("`operator ()' must be specified without whitespace in `()'");
2149 error ("`operator ?:' must be specified without whitespace in `?:'");
2154 error ("`operator []' must be specified without whitespace in `[]'");
2158 error ("`operator %s' not supported", p
);
2165 /* Return the number of methods described for TYPE, including the
2166 methods from types it derives from. This can't be done in the symbol
2167 reader because the type of the baseclass might still be stubbed
2168 when the definition of the derived class is parsed. */
2170 static int total_number_of_methods (struct type
*type
);
2173 total_number_of_methods (struct type
*type
)
2178 CHECK_TYPEDEF (type
);
2179 if (TYPE_CPLUS_SPECIFIC (type
) == NULL
)
2181 count
= TYPE_NFN_FIELDS_TOTAL (type
);
2183 for (n
= 0; n
< TYPE_N_BASECLASSES (type
); n
++)
2184 count
+= total_number_of_methods (TYPE_BASECLASS (type
, n
));
2189 /* Recursive helper function for decode_line_1.
2190 Look for methods named NAME in type T.
2191 Return number of matches.
2192 Put matches in SYM_ARR, which should have been allocated with
2193 a size of total_number_of_methods (T) * sizeof (struct symbol *).
2194 Note that this function is g++ specific. */
2197 find_methods (struct type
*t
, char *name
, struct symbol
**sym_arr
)
2201 struct symbol
*sym_class
;
2202 char *class_name
= type_name_no_tag (t
);
2204 /* Ignore this class if it doesn't have a name. This is ugly, but
2205 unless we figure out how to get the physname without the name of
2206 the class, then the loop can't do any good. */
2208 && (sym_class
= lookup_symbol (class_name
,
2209 (struct block
*) NULL
,
2212 (struct symtab
**) NULL
)))
2216 /* FIXME: Shouldn't this just be CHECK_TYPEDEF (t)? */
2217 t
= SYMBOL_TYPE (sym_class
);
2219 /* Loop over each method name. At this level, all overloads of a name
2220 are counted as a single name. There is an inner loop which loops over
2223 for (method_counter
= TYPE_NFN_FIELDS (t
) - 1;
2224 method_counter
>= 0;
2228 char *method_name
= TYPE_FN_FIELDLIST_NAME (t
, method_counter
);
2229 char dem_opname
[64];
2231 if (strncmp (method_name
, "__", 2) == 0 ||
2232 strncmp (method_name
, "op", 2) == 0 ||
2233 strncmp (method_name
, "type", 4) == 0)
2235 if (cplus_demangle_opname (method_name
, dem_opname
, DMGL_ANSI
))
2236 method_name
= dem_opname
;
2237 else if (cplus_demangle_opname (method_name
, dem_opname
, 0))
2238 method_name
= dem_opname
;
2241 if (STREQ (name
, method_name
))
2242 /* Find all the overloaded methods with that name. */
2243 for (field_counter
= TYPE_FN_FIELDLIST_LENGTH (t
, method_counter
) - 1;
2250 f
= TYPE_FN_FIELDLIST1 (t
, method_counter
);
2252 if (TYPE_FN_FIELD_STUB (f
, field_counter
))
2256 tmp_name
= gdb_mangle_name (t
,
2259 phys_name
= alloca (strlen (tmp_name
) + 1);
2260 strcpy (phys_name
, tmp_name
);
2264 phys_name
= TYPE_FN_FIELD_PHYSNAME (f
, field_counter
);
2266 /* Destructor is handled by caller, dont add it to the list */
2267 if (DESTRUCTOR_PREFIX_P (phys_name
))
2270 sym_arr
[i1
] = lookup_symbol (phys_name
,
2271 NULL
, VAR_NAMESPACE
,
2273 (struct symtab
**) NULL
);
2278 /* This error message gets printed, but the method
2279 still seems to be found
2280 fputs_filtered("(Cannot find method ", gdb_stdout);
2281 fprintf_symbol_filtered (gdb_stdout, phys_name,
2283 DMGL_PARAMS | DMGL_ANSI);
2284 fputs_filtered(" - possibly inlined.)\n", gdb_stdout);
2291 /* Only search baseclasses if there is no match yet, since names in
2292 derived classes override those in baseclasses.
2294 FIXME: The above is not true; it is only true of member functions
2295 if they have the same number of arguments (??? - section 13.1 of the
2296 ARM says the function members are not in the same scope but doesn't
2297 really spell out the rules in a way I understand. In any case, if
2298 the number of arguments differ this is a case in which we can overload
2299 rather than hiding without any problem, and gcc 2.4.5 does overload
2300 rather than hiding in this case). */
2303 for (ibase
= 0; ibase
< TYPE_N_BASECLASSES (t
); ibase
++)
2304 i1
+= find_methods (TYPE_BASECLASS (t
, ibase
), name
, sym_arr
+ i1
);
2309 /* Helper function for decode_line_1.
2310 Build a canonical line spec in CANONICAL if it is non-NULL and if
2311 the SAL has a symtab.
2312 If SYMNAME is non-NULL the canonical line spec is `filename:symname'.
2313 If SYMNAME is NULL the line number from SAL is used and the canonical
2314 line spec is `filename:linenum'. */
2317 build_canonical_line_spec (struct symtab_and_line
*sal
, char *symname
,
2320 char **canonical_arr
;
2321 char *canonical_name
;
2323 struct symtab
*s
= sal
->symtab
;
2325 if (s
== (struct symtab
*) NULL
2326 || s
->filename
== (char *) NULL
2327 || canonical
== (char ***) NULL
)
2330 canonical_arr
= (char **) xmalloc (sizeof (char *));
2331 *canonical
= canonical_arr
;
2333 filename
= s
->filename
;
2334 if (symname
!= NULL
)
2336 canonical_name
= xmalloc (strlen (filename
) + strlen (symname
) + 2);
2337 sprintf (canonical_name
, "%s:%s", filename
, symname
);
2341 canonical_name
= xmalloc (strlen (filename
) + 30);
2342 sprintf (canonical_name
, "%s:%d", filename
, sal
->line
);
2344 canonical_arr
[0] = canonical_name
;
2349 /* Find an instance of the character C in the string S that is outside
2350 of all parenthesis pairs, single-quoted strings, and double-quoted
2353 find_toplevel_char (char *s
, char c
)
2355 int quoted
= 0; /* zero if we're not in quotes;
2356 '"' if we're in a double-quoted string;
2357 '\'' if we're in a single-quoted string. */
2358 int depth
= 0; /* number of unclosed parens we've seen */
2361 for (scan
= s
; *scan
; scan
++)
2365 if (*scan
== quoted
)
2367 else if (*scan
== '\\' && *(scan
+ 1))
2370 else if (*scan
== c
&& ! quoted
&& depth
== 0)
2372 else if (*scan
== '"' || *scan
== '\'')
2374 else if (*scan
== '(')
2376 else if (*scan
== ')' && depth
> 0)
2384 /* Parse a string that specifies a line number.
2385 Pass the address of a char * variable; that variable will be
2386 advanced over the characters actually parsed.
2390 LINENUM -- that line number in current file. PC returned is 0.
2391 FILE:LINENUM -- that line in that file. PC returned is 0.
2392 FUNCTION -- line number of openbrace of that function.
2393 PC returned is the start of the function.
2394 VARIABLE -- line number of definition of that variable.
2396 FILE:FUNCTION -- likewise, but prefer functions in that file.
2397 *EXPR -- line in which address EXPR appears.
2399 This may all be followed by an "if EXPR", which we ignore.
2401 FUNCTION may be an undebuggable function found in minimal symbol table.
2403 If the argument FUNFIRSTLINE is nonzero, we want the first line
2404 of real code inside a function when a function is specified, and it is
2405 not OK to specify a variable or type to get its line number.
2407 DEFAULT_SYMTAB specifies the file to use if none is specified.
2408 It defaults to current_source_symtab.
2409 DEFAULT_LINE specifies the line number to use for relative
2410 line numbers (that start with signs). Defaults to current_source_line.
2411 If CANONICAL is non-NULL, store an array of strings containing the canonical
2412 line specs there if necessary. Currently overloaded member functions and
2413 line numbers or static functions without a filename yield a canonical
2414 line spec. The array and the line spec strings are allocated on the heap,
2415 it is the callers responsibility to free them.
2417 Note that it is possible to return zero for the symtab
2418 if no file is validly specified. Callers must check that.
2419 Also, the line number returned may be invalid. */
2421 /* We allow single quotes in various places. This is a hideous
2422 kludge, which exists because the completer can't yet deal with the
2423 lack of single quotes. FIXME: write a linespec_completer which we
2424 can use as appropriate instead of make_symbol_completion_list. */
2426 struct symtabs_and_lines
2427 decode_line_1 (char **argptr
, int funfirstline
, struct symtab
*default_symtab
,
2428 int default_line
, char ***canonical
)
2430 struct symtabs_and_lines values
;
2431 #ifdef HPPA_COMPILER_BUG
2432 /* FIXME: The native HP 9000/700 compiler has a bug which appears
2433 when optimizing this file with target i960-vxworks. I haven't
2434 been able to construct a simple test case. The problem is that
2435 in the second call to SKIP_PROLOGUE below, the compiler somehow
2436 does not realize that the statement val = find_pc_line (...) will
2437 change the values of the fields of val. It extracts the elements
2438 into registers at the top of the block, and does not update the
2439 registers after the call to find_pc_line. You can check this by
2440 inserting a printf at the end of find_pc_line to show what values
2441 it is returning for val.pc and val.end and another printf after
2442 the call to see what values the function actually got (remember,
2443 this is compiling with cc -O, with this patch removed). You can
2444 also examine the assembly listing: search for the second call to
2445 skip_prologue; the LDO statement before the next call to
2446 find_pc_line loads the address of the structure which
2447 find_pc_line will return; if there is a LDW just before the LDO,
2448 which fetches an element of the structure, then the compiler
2451 Setting val to volatile avoids the problem. We must undef
2452 volatile, because the HPPA native compiler does not define
2453 __STDC__, although it does understand volatile, and so volatile
2454 will have been defined away in defs.h. */
2456 volatile struct symtab_and_line val
;
2457 #define volatile /*nothing */
2459 struct symtab_and_line val
;
2461 register char *p
, *p1
;
2462 char *q
, *pp
, *ii
, *p2
;
2466 register struct symtab
*s
;
2468 register struct symbol
*sym
;
2469 /* The symtab that SYM was found in. */
2470 struct symtab
*sym_symtab
;
2472 register CORE_ADDR pc
;
2473 register struct minimal_symbol
*msymbol
;
2475 struct symbol
*sym_class
;
2478 int is_quote_enclosed
;
2482 struct symbol
**sym_arr
;
2484 char *saved_arg
= *argptr
;
2485 extern char *gdb_completer_quote_characters
;
2487 INIT_SAL (&val
); /* initialize to zeroes */
2489 /* Defaults have defaults. */
2491 if (default_symtab
== 0)
2493 default_symtab
= current_source_symtab
;
2494 default_line
= current_source_line
;
2497 /* See if arg is *PC */
2499 if (**argptr
== '*')
2502 pc
= parse_and_eval_address_1 (argptr
);
2504 values
.sals
= (struct symtab_and_line
*)
2505 xmalloc (sizeof (struct symtab_and_line
));
2508 values
.sals
[0] = find_pc_line (pc
, 0);
2509 values
.sals
[0].pc
= pc
;
2510 values
.sals
[0].section
= find_pc_overlay (pc
);
2515 /* 'has_if' is for the syntax:
2516 * (gdb) break foo if (a==b)
2518 if ((ii
= strstr (*argptr
, " if ")) != NULL
||
2519 (ii
= strstr (*argptr
, "\tif ")) != NULL
||
2520 (ii
= strstr (*argptr
, " if\t")) != NULL
||
2521 (ii
= strstr (*argptr
, "\tif\t")) != NULL
||
2522 (ii
= strstr (*argptr
, " if(")) != NULL
||
2523 (ii
= strstr (*argptr
, "\tif( ")) != NULL
)
2525 /* Temporarily zap out "if (condition)" to not
2526 * confuse the parenthesis-checking code below.
2527 * This is undone below. Do not change ii!!
2534 /* Set various flags.
2535 * 'has_parens' is important for overload checking, where
2536 * we allow things like:
2537 * (gdb) break c::f(int)
2540 /* Maybe arg is FILE : LINENUM or FILE : FUNCTION */
2542 is_quoted
= (**argptr
2543 && strchr (gdb_completer_quote_characters
, **argptr
) != NULL
);
2545 has_parens
= ((pp
= strchr (*argptr
, '(')) != NULL
2546 && (pp
= strrchr (pp
, ')')) != NULL
);
2548 /* Now that we're safely past the has_parens check,
2549 * put back " if (condition)" so outer layers can see it
2554 /* Maybe we were called with a line range FILENAME:LINENUM,FILENAME:LINENUM
2555 and we must isolate the first half. Outer layers will call again later
2556 for the second half.
2558 Don't count commas that appear in argument lists of overloaded
2559 functions, or in quoted strings. It's stupid to go to this much
2560 trouble when the rest of the function is such an obvious roach hotel. */
2561 ii
= find_toplevel_char (*argptr
, ',');
2562 has_comma
= (ii
!= 0);
2564 /* Temporarily zap out second half to not
2565 * confuse the code below.
2566 * This is undone below. Do not change ii!!
2573 /* Maybe arg is FILE : LINENUM or FILE : FUNCTION */
2574 /* May also be CLASS::MEMBER, or NAMESPACE::NAME */
2575 /* Look for ':', but ignore inside of <> */
2581 is_quote_enclosed
= 1;
2585 is_quote_enclosed
= 0;
2590 char *temp_end
= find_template_name_end (p
);
2592 error ("malformed template specification in command");
2595 /* Check for the end of the first half of the linespec. End of line,
2596 a tab, a double colon or the last single colon, or a space. But
2597 if enclosed in double quotes we do not break on enclosed spaces */
2601 && ((p
[1] == ':') || (strchr (p
+ 1, ':') == NULL
)))
2602 || ((p
[0] == ' ') && !is_quote_enclosed
))
2604 if (p
[0] == '.' && strchr (p
, ':') == NULL
) /* Java qualified method. */
2606 /* Find the *last* '.', since the others are package qualifiers. */
2607 for (p1
= p
; *p1
; p1
++)
2615 while (p
[0] == ' ' || p
[0] == '\t')
2618 /* if the closing double quote was left at the end, remove it */
2619 if (is_quote_enclosed
)
2621 char *closing_quote
= strchr (p
, '"');
2622 if (closing_quote
&& closing_quote
[1] == '\0')
2623 *closing_quote
= '\0';
2626 /* Now that we've safely parsed the first half,
2627 * put back ',' so outer layers can see it
2632 if ((p
[0] == ':' || p
[0] == '.') && !has_parens
)
2637 *argptr
= *argptr
+ 1;
2638 if (p
[0] == '.' || p
[1] == ':')
2640 char *saved_arg2
= *argptr
;
2642 /* First check for "global" namespace specification,
2643 of the form "::foo". If found, skip over the colons
2644 and jump to normal symbol processing */
2646 && ((*argptr
== p
) || (p
[-1] == ' ') || (p
[-1] == '\t')))
2649 /* We have what looks like a class or namespace
2650 scope specification (A::B), possibly with many
2651 levels of namespaces or classes (A::B::C::D).
2653 Some versions of the HP ANSI C++ compiler (as also possibly
2654 other compilers) generate class/function/member names with
2655 embedded double-colons if they are inside namespaces. To
2656 handle this, we loop a few times, considering larger and
2657 larger prefixes of the string as though they were single
2658 symbols. So, if the initially supplied string is
2659 A::B::C::D::foo, we have to look up "A", then "A::B",
2660 then "A::B::C", then "A::B::C::D", and finally
2661 "A::B::C::D::foo" as single, monolithic symbols, because
2662 A, B, C or D may be namespaces.
2664 Note that namespaces can nest only inside other
2665 namespaces, and not inside classes. So we need only
2666 consider *prefixes* of the string; there is no need to look up
2667 "B::C" separately as a symbol in the previous example. */
2669 p2
= p
; /* save for restart */
2672 /* Extract the class name. */
2674 while (p
!= *argptr
&& p
[-1] == ' ')
2676 copy
= (char *) alloca (p
- *argptr
+ 1);
2677 memcpy (copy
, *argptr
, p
- *argptr
);
2678 copy
[p
- *argptr
] = 0;
2680 /* Discard the class name from the arg. */
2681 p
= p1
+ (p1
[0] == ':' ? 2 : 1);
2682 while (*p
== ' ' || *p
== '\t')
2686 sym_class
= lookup_symbol (copy
, 0, STRUCT_NAMESPACE
, 0,
2687 (struct symtab
**) NULL
);
2690 (t
= check_typedef (SYMBOL_TYPE (sym_class
)),
2691 (TYPE_CODE (t
) == TYPE_CODE_STRUCT
2692 || TYPE_CODE (t
) == TYPE_CODE_UNION
)))
2694 /* Arg token is not digits => try it as a function name
2695 Find the next token(everything up to end or next blank). */
2697 && strchr (gdb_completer_quote_characters
, **argptr
) != NULL
)
2699 p
= skip_quoted (*argptr
);
2700 *argptr
= *argptr
+ 1;
2705 while (*p
&& *p
!= ' ' && *p
!= '\t' && *p
!= ',' && *p
!= ':')
2709 q = operator_chars (*argptr, &q1);
2713 char *tmp = alloca (q1 - q + 1);
2714 memcpy (tmp, q, q1 - q);
2716 opname = cplus_mangle_opname (tmp, DMGL_ANSI);
2720 printf_filtered ("no mangling for \"%s\"\n", tmp);
2721 cplusplus_hint (saved_arg);
2722 return_to_top_level (RETURN_ERROR);
2724 copy = (char*) alloca (3 + strlen(opname));
2725 sprintf (copy, "__%s", opname);
2731 copy
= (char *) alloca (p
- *argptr
+ 1);
2732 memcpy (copy
, *argptr
, p
- *argptr
);
2733 copy
[p
- *argptr
] = '\0';
2735 && copy
[p
- *argptr
- 1]
2736 && strchr (gdb_completer_quote_characters
,
2737 copy
[p
- *argptr
- 1]) != NULL
)
2738 copy
[p
- *argptr
- 1] = '\0';
2741 /* no line number may be specified */
2742 while (*p
== ' ' || *p
== '\t')
2747 i1
= 0; /* counter for the symbol array */
2748 sym_arr
= (struct symbol
**) alloca (total_number_of_methods (t
)
2749 * sizeof (struct symbol
*));
2751 if (destructor_name_p (copy
, t
))
2753 /* Destructors are a special case. */
2754 int m_index
, f_index
;
2756 if (get_destructor_fn_field (t
, &m_index
, &f_index
))
2758 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (t
, m_index
);
2761 lookup_symbol (TYPE_FN_FIELD_PHYSNAME (f
, f_index
),
2762 NULL
, VAR_NAMESPACE
, (int *) NULL
,
2763 (struct symtab
**) NULL
);
2769 i1
= find_methods (t
, copy
, sym_arr
);
2772 /* There is exactly one field with that name. */
2775 if (sym
&& SYMBOL_CLASS (sym
) == LOC_BLOCK
)
2777 values
.sals
= (struct symtab_and_line
*)
2778 xmalloc (sizeof (struct symtab_and_line
));
2780 values
.sals
[0] = find_function_start_sal (sym
,
2791 /* There is more than one field with that name
2792 (overloaded). Ask the user which one to use. */
2793 return decode_line_2 (sym_arr
, i1
, funfirstline
, canonical
);
2799 if (OPNAME_PREFIX_P (copy
))
2801 tmp
= (char *) alloca (strlen (copy
+ 3) + 9);
2802 strcpy (tmp
, "operator ");
2803 strcat (tmp
, copy
+ 3);
2810 ("the class `%s' does not have destructor defined\n",
2811 SYMBOL_SOURCE_NAME (sym_class
));
2814 ("the class %s does not have any method named %s\n",
2815 SYMBOL_SOURCE_NAME (sym_class
), tmp
);
2816 cplusplus_hint (saved_arg
);
2817 return_to_top_level (RETURN_ERROR
);
2821 /* Move pointer up to next possible class/namespace token */
2822 p
= p2
+ 1; /* restart with old value +1 */
2823 /* Move pointer ahead to next double-colon */
2824 while (*p
&& (p
[0] != ' ') && (p
[0] != '\t') && (p
[0] != '\''))
2828 temp_end
= find_template_name_end (p
);
2830 error ("malformed template specification in command");
2833 else if ((p
[0] == ':') && (p
[1] == ':'))
2834 break; /* found double-colon */
2840 break; /* out of the while (1) */
2842 p2
= p
; /* save restart for next time around */
2843 *argptr
= saved_arg2
; /* restore argptr */
2846 /* Last chance attempt -- check entire name as a symbol */
2847 /* Use "copy" in preparation for jumping out of this block,
2848 to be consistent with usage following the jump target */
2849 copy
= (char *) alloca (p
- saved_arg2
+ 1);
2850 memcpy (copy
, saved_arg2
, p
- saved_arg2
);
2851 /* Note: if is_quoted should be true, we snuff out quote here anyway */
2852 copy
[p
- saved_arg2
] = '\000';
2853 /* Set argptr to skip over the name */
2854 *argptr
= (*p
== '\'') ? p
+ 1 : p
;
2855 /* Look up entire name */
2856 sym
= lookup_symbol (copy
, 0, VAR_NAMESPACE
, 0, &sym_symtab
);
2857 s
= (struct symtab
*) 0;
2858 /* Prepare to jump: restore the " if (condition)" so outer layers see it */
2859 /* Symbol was found --> jump to normal symbol processing.
2860 Code following "symbol_found" expects "copy" to have the
2861 symbol name, "sym" to have the symbol pointer, "s" to be
2862 a specified file's symtab, and sym_symtab to be the symbol's
2864 /* By jumping there we avoid falling through the FILE:LINE and
2865 FILE:FUNC processing stuff below */
2869 /* Couldn't find any interpretation as classes/namespaces, so give up */
2871 /* The quotes are important if copy is empty. */
2873 ("Can't find member of namespace, class, struct, or union named \"%s\"\n", copy
);
2874 cplusplus_hint (saved_arg
);
2875 return_to_top_level (RETURN_ERROR
);
2880 /* Extract the file name. */
2882 while (p
!= *argptr
&& p
[-1] == ' ')
2884 if ((*p
== '"') && is_quote_enclosed
)
2886 copy
= (char *) alloca (p
- *argptr
+ 1);
2887 if ((**argptr
== '"') && is_quote_enclosed
)
2889 memcpy (copy
, *argptr
+ 1, p
- *argptr
- 1);
2890 /* It may have the ending quote right after the file name */
2891 if (copy
[p
- *argptr
- 2] == '"')
2892 copy
[p
- *argptr
- 2] = 0;
2894 copy
[p
- *argptr
- 1] = 0;
2898 memcpy (copy
, *argptr
, p
- *argptr
);
2899 copy
[p
- *argptr
] = 0;
2902 /* Find that file's data. */
2903 s
= lookup_symtab (copy
);
2906 if (!have_full_symbols () && !have_partial_symbols ())
2907 error (no_symtab_msg
);
2908 error ("No source file named %s.", copy
);
2911 /* Discard the file name from the arg. */
2913 while (*p
== ' ' || *p
== '\t')
2918 /* No one really seems to know why this was added. It certainly
2919 breaks the command line, though, whenever the passed
2920 name is of the form ClassName::Method. This bit of code
2921 singles out the class name, and if funfirstline is set (for
2922 example, you are setting a breakpoint at this function),
2923 you get an error. This did not occur with earlier
2924 verions, so I am ifdef'ing this out. 3/29/99 */
2927 /* Check if what we have till now is a symbol name */
2929 /* We may be looking at a template instantiation such
2930 as "foo<int>". Check here whether we know about it,
2931 instead of falling through to the code below which
2932 handles ordinary function names, because that code
2933 doesn't like seeing '<' and '>' in a name -- the
2934 skip_quoted call doesn't go past them. So see if we
2935 can figure it out right now. */
2937 copy
= (char *) alloca (p
- *argptr
+ 1);
2938 memcpy (copy
, *argptr
, p
- *argptr
);
2939 copy
[p
- *argptr
] = '\000';
2940 sym
= lookup_symbol (copy
, 0, VAR_NAMESPACE
, 0, &sym_symtab
);
2943 /* Yes, we have a symbol; jump to symbol processing */
2944 /* Code after symbol_found expects S, SYM_SYMTAB, SYM,
2945 and COPY to be set correctly */
2946 *argptr
= (*p
== '\'') ? p
+ 1 : p
;
2947 s
= (struct symtab
*) 0;
2950 /* Otherwise fall out from here and go to file/line spec
2955 /* S is specified file's symtab, or 0 if no file specified.
2956 arg no longer contains the file name. */
2958 /* Check whether arg is all digits (and sign) */
2961 if (*q
== '-' || *q
== '+')
2963 while (*q
>= '0' && *q
<= '9')
2966 if (q
!= *argptr
&& (*q
== 0 || *q
== ' ' || *q
== '\t' || *q
== ','))
2968 /* We found a token consisting of all digits -- at least one digit. */
2975 /* We might need a canonical line spec if no file was specified. */
2976 int need_canonical
= (s
== 0) ? 1 : 0;
2978 /* This is where we need to make sure that we have good defaults.
2979 We must guarantee that this section of code is never executed
2980 when we are called with just a function name, since
2981 select_source_symtab calls us with such an argument */
2983 if (s
== 0 && default_symtab
== 0)
2985 select_source_symtab (0);
2986 default_symtab
= current_source_symtab
;
2987 default_line
= current_source_line
;
2990 if (**argptr
== '+')
2991 sign
= plus
, (*argptr
)++;
2992 else if (**argptr
== '-')
2993 sign
= minus
, (*argptr
)++;
2994 val
.line
= atoi (*argptr
);
3001 val
.line
= default_line
+ val
.line
;
3007 val
.line
= default_line
- val
.line
;
3012 break; /* No need to adjust val.line. */
3015 while (*q
== ' ' || *q
== '\t')
3021 /* It is possible that this source file has more than one symtab,
3022 and that the new line number specification has moved us from the
3023 default (in s) to a new one. */
3024 val
.symtab
= find_line_symtab (s
, val
.line
, NULL
, NULL
);
3025 if (val
.symtab
== 0)
3029 values
.sals
= (struct symtab_and_line
*)
3030 xmalloc (sizeof (struct symtab_and_line
));
3031 values
.sals
[0] = val
;
3034 build_canonical_line_spec (values
.sals
, NULL
, canonical
);
3038 /* Arg token is not digits => try it as a variable name
3039 Find the next token (everything up to end or next whitespace). */
3041 if (**argptr
== '$') /* May be a convenience variable */
3042 p
= skip_quoted (*argptr
+ (((*argptr
)[1] == '$') ? 2 : 1)); /* One or two $ chars possible */
3045 p
= skip_quoted (*argptr
);
3047 error ("Unmatched single quote.");
3049 else if (has_parens
)
3055 p
= skip_quoted (*argptr
);
3058 if (is_quote_enclosed
&& **argptr
== '"')
3061 copy
= (char *) alloca (p
- *argptr
+ 1);
3062 memcpy (copy
, *argptr
, p
- *argptr
);
3063 copy
[p
- *argptr
] = '\0';
3066 && copy
[0] == copy
[p
- *argptr
- 1]
3067 && strchr (gdb_completer_quote_characters
, copy
[0]) != NULL
)
3069 copy
[p
- *argptr
- 1] = '\0';
3072 while (*p
== ' ' || *p
== '\t')
3076 /* If it starts with $: may be a legitimate variable or routine name
3077 (e.g. HP-UX millicode routines such as $$dyncall), or it may
3078 be history value, or it may be a convenience variable */
3084 int need_canonical
= 0;
3086 p
= (copy
[1] == '$') ? copy
+ 2 : copy
+ 1;
3087 while (*p
>= '0' && *p
<= '9')
3089 if (!*p
) /* reached end of token without hitting non-digit */
3091 /* We have a value history reference */
3092 sscanf ((copy
[1] == '$') ? copy
+ 2 : copy
+ 1, "%d", &index
);
3093 valx
= access_value_history ((copy
[1] == '$') ? -index
: index
);
3094 if (TYPE_CODE (VALUE_TYPE (valx
)) != TYPE_CODE_INT
)
3095 error ("History values used in line specs must have integer values.");
3099 /* Not all digits -- may be user variable/function or a
3100 convenience variable */
3102 /* Look up entire name as a symbol first */
3103 sym
= lookup_symbol (copy
, 0, VAR_NAMESPACE
, 0, &sym_symtab
);
3104 s
= (struct symtab
*) 0;
3106 /* Symbol was found --> jump to normal symbol processing.
3107 Code following "symbol_found" expects "copy" to have the
3108 symbol name, "sym" to have the symbol pointer, "s" to be
3109 a specified file's symtab, and sym_symtab to be the symbol's
3114 /* If symbol was not found, look in minimal symbol tables */
3115 msymbol
= lookup_minimal_symbol (copy
, 0, 0);
3116 /* Min symbol was found --> jump to minsym processing. */
3118 goto minimal_symbol_found
;
3120 /* Not a user variable or function -- must be convenience variable */
3121 need_canonical
= (s
== 0) ? 1 : 0;
3122 valx
= value_of_internalvar (lookup_internalvar (copy
+ 1));
3123 if (TYPE_CODE (VALUE_TYPE (valx
)) != TYPE_CODE_INT
)
3124 error ("Convenience variables used in line specs must have integer values.");
3127 /* Either history value or convenience value from above, in valx */
3128 val
.symtab
= s
? s
: default_symtab
;
3129 val
.line
= value_as_long (valx
);
3132 values
.sals
= (struct symtab_and_line
*) xmalloc (sizeof val
);
3133 values
.sals
[0] = val
;
3137 build_canonical_line_spec (values
.sals
, NULL
, canonical
);
3143 /* Look up that token as a variable.
3144 If file specified, use that file's per-file block to start with. */
3146 sym
= lookup_symbol (copy
,
3147 (s
? BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
)
3148 : get_selected_block ()),
3149 VAR_NAMESPACE
, 0, &sym_symtab
);
3151 symbol_found
: /* We also jump here from inside the C++ class/namespace
3152 code on finding a symbol of the form "A::B::C" */
3156 if (SYMBOL_CLASS (sym
) == LOC_BLOCK
)
3158 /* Arg is the name of a function */
3159 values
.sals
= (struct symtab_and_line
*)
3160 xmalloc (sizeof (struct symtab_and_line
));
3161 values
.sals
[0] = find_function_start_sal (sym
, funfirstline
);
3164 /* Don't use the SYMBOL_LINE; if used at all it points to
3165 the line containing the parameters or thereabouts, not
3166 the first line of code. */
3168 /* We might need a canonical line spec if it is a static
3172 struct blockvector
*bv
= BLOCKVECTOR (sym_symtab
);
3173 struct block
*b
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
3174 if (lookup_block_symbol (b
, copy
, VAR_NAMESPACE
) != NULL
)
3175 build_canonical_line_spec (values
.sals
, copy
, canonical
);
3182 error ("\"%s\" is not a function", copy
);
3183 else if (SYMBOL_LINE (sym
) != 0)
3185 /* We know its line number. */
3186 values
.sals
= (struct symtab_and_line
*)
3187 xmalloc (sizeof (struct symtab_and_line
));
3189 memset (&values
.sals
[0], 0, sizeof (values
.sals
[0]));
3190 values
.sals
[0].symtab
= sym_symtab
;
3191 values
.sals
[0].line
= SYMBOL_LINE (sym
);
3195 /* This can happen if it is compiled with a compiler which doesn't
3196 put out line numbers for variables. */
3197 /* FIXME: Shouldn't we just set .line and .symtab to zero
3198 and return? For example, "info line foo" could print
3200 error ("Line number not known for symbol \"%s\"", copy
);
3204 msymbol
= lookup_minimal_symbol (copy
, NULL
, NULL
);
3206 minimal_symbol_found
: /* We also jump here from the case for variables
3207 that begin with '$' */
3209 if (msymbol
!= NULL
)
3211 values
.sals
= (struct symtab_and_line
*)
3212 xmalloc (sizeof (struct symtab_and_line
));
3213 values
.sals
[0] = find_pc_sect_line (SYMBOL_VALUE_ADDRESS (msymbol
),
3214 (struct sec
*) 0, 0);
3215 values
.sals
[0].section
= SYMBOL_BFD_SECTION (msymbol
);
3218 values
.sals
[0].pc
+= FUNCTION_START_OFFSET
;
3219 values
.sals
[0].pc
= SKIP_PROLOGUE (values
.sals
[0].pc
);
3225 if (!have_full_symbols () &&
3226 !have_partial_symbols () && !have_minimal_symbols ())
3227 error (no_symtab_msg
);
3229 error ("Function \"%s\" not defined.", copy
);
3230 return values
; /* for lint */
3233 struct symtabs_and_lines
3234 decode_line_spec (char *string
, int funfirstline
)
3236 struct symtabs_and_lines sals
;
3238 error ("Empty line specification.");
3239 sals
= decode_line_1 (&string
, funfirstline
,
3240 current_source_symtab
, current_source_line
,
3243 error ("Junk at end of line specification: %s", string
);
3247 /* Given a list of NELTS symbols in SYM_ARR, return a list of lines to
3248 operate on (ask user if necessary).
3249 If CANONICAL is non-NULL return a corresponding array of mangled names
3250 as canonical line specs there. */
3252 static struct symtabs_and_lines
3253 decode_line_2 (sym_arr
, nelts
, funfirstline
, canonical
)
3254 struct symbol
*sym_arr
[];
3259 struct symtabs_and_lines values
, return_values
;
3264 struct cleanup
*old_chain
;
3265 char **canonical_arr
= (char **) NULL
;
3267 values
.sals
= (struct symtab_and_line
*)
3268 alloca (nelts
* sizeof (struct symtab_and_line
));
3269 return_values
.sals
= (struct symtab_and_line
*)
3270 xmalloc (nelts
* sizeof (struct symtab_and_line
));
3271 old_chain
= make_cleanup (free
, return_values
.sals
);
3275 canonical_arr
= (char **) xmalloc (nelts
* sizeof (char *));
3276 make_cleanup (free
, canonical_arr
);
3277 memset (canonical_arr
, 0, nelts
* sizeof (char *));
3278 *canonical
= canonical_arr
;
3282 printf_unfiltered ("[0] cancel\n[1] all\n");
3285 INIT_SAL (&return_values
.sals
[i
]); /* initialize to zeroes */
3286 INIT_SAL (&values
.sals
[i
]);
3287 if (sym_arr
[i
] && SYMBOL_CLASS (sym_arr
[i
]) == LOC_BLOCK
)
3289 values
.sals
[i
] = find_function_start_sal (sym_arr
[i
], funfirstline
);
3290 printf_unfiltered ("[%d] %s at %s:%d\n",
3292 SYMBOL_SOURCE_NAME (sym_arr
[i
]),
3293 values
.sals
[i
].symtab
->filename
,
3294 values
.sals
[i
].line
);
3297 printf_unfiltered ("?HERE\n");
3301 if ((prompt
= getenv ("PS2")) == NULL
)
3305 args
= command_line_input (prompt
, 0, "overload-choice");
3307 if (args
== 0 || *args
== 0)
3308 error_no_arg ("one or more choice numbers");
3316 while (*arg1
>= '0' && *arg1
<= '9')
3318 if (*arg1
&& *arg1
!= ' ' && *arg1
!= '\t')
3319 error ("Arguments must be choice numbers.");
3324 error ("cancelled");
3329 for (i
= 0; i
< nelts
; i
++)
3331 if (canonical_arr
[i
] == NULL
)
3333 symname
= SYMBOL_NAME (sym_arr
[i
]);
3334 canonical_arr
[i
] = savestring (symname
, strlen (symname
));
3338 memcpy (return_values
.sals
, values
.sals
,
3339 (nelts
* sizeof (struct symtab_and_line
)));
3340 return_values
.nelts
= nelts
;
3341 discard_cleanups (old_chain
);
3342 return return_values
;
3345 if (num
>= nelts
+ 2)
3347 printf_unfiltered ("No choice number %d.\n", num
);
3352 if (values
.sals
[num
].pc
)
3356 symname
= SYMBOL_NAME (sym_arr
[num
]);
3357 make_cleanup (free
, symname
);
3358 canonical_arr
[i
] = savestring (symname
, strlen (symname
));
3360 return_values
.sals
[i
++] = values
.sals
[num
];
3361 values
.sals
[num
].pc
= 0;
3365 printf_unfiltered ("duplicate request for %d ignored.\n", num
);
3370 while (*args
== ' ' || *args
== '\t')
3373 return_values
.nelts
= i
;
3374 discard_cleanups (old_chain
);
3375 return return_values
;
3379 /* Slave routine for sources_info. Force line breaks at ,'s.
3380 NAME is the name to print and *FIRST is nonzero if this is the first
3381 name printed. Set *FIRST to zero. */
3383 output_source_filename (char *name
, int *first
)
3385 /* Table of files printed so far. Since a single source file can
3386 result in several partial symbol tables, we need to avoid printing
3387 it more than once. Note: if some of the psymtabs are read in and
3388 some are not, it gets printed both under "Source files for which
3389 symbols have been read" and "Source files for which symbols will
3390 be read in on demand". I consider this a reasonable way to deal
3391 with the situation. I'm not sure whether this can also happen for
3392 symtabs; it doesn't hurt to check. */
3393 static char **tab
= NULL
;
3394 /* Allocated size of tab in elements.
3395 Start with one 256-byte block (when using GNU malloc.c).
3396 24 is the malloc overhead when range checking is in effect. */
3397 static int tab_alloc_size
= (256 - 24) / sizeof (char *);
3398 /* Current size of tab in elements. */
3399 static int tab_cur_size
;
3406 tab
= (char **) xmalloc (tab_alloc_size
* sizeof (*tab
));
3410 /* Is NAME in tab? */
3411 for (p
= tab
; p
< tab
+ tab_cur_size
; p
++)
3412 if (STREQ (*p
, name
))
3413 /* Yes; don't print it again. */
3415 /* No; add it to tab. */
3416 if (tab_cur_size
== tab_alloc_size
)
3418 tab_alloc_size
*= 2;
3419 tab
= (char **) xrealloc ((char *) tab
, tab_alloc_size
* sizeof (*tab
));
3421 tab
[tab_cur_size
++] = name
;
3429 printf_filtered (", ");
3433 fputs_filtered (name
, gdb_stdout
);
3437 sources_info (char *ignore
, int from_tty
)
3439 register struct symtab
*s
;
3440 register struct partial_symtab
*ps
;
3441 register struct objfile
*objfile
;
3444 if (!have_full_symbols () && !have_partial_symbols ())
3446 error (no_symtab_msg
);
3449 printf_filtered ("Source files for which symbols have been read in:\n\n");
3452 ALL_SYMTABS (objfile
, s
)
3454 output_source_filename (s
->filename
, &first
);
3456 printf_filtered ("\n\n");
3458 printf_filtered ("Source files for which symbols will be read in on demand:\n\n");
3461 ALL_PSYMTABS (objfile
, ps
)
3465 output_source_filename (ps
->filename
, &first
);
3468 printf_filtered ("\n");
3472 file_matches (file
, files
, nfiles
)
3479 if (file
!= NULL
&& nfiles
!= 0)
3481 for (i
= 0; i
< nfiles
; i
++)
3483 if (strcmp (files
[i
], basename (file
)) == 0)
3487 else if (nfiles
== 0)
3492 /* Free any memory associated with a search. */
3494 free_search_symbols (struct symbol_search
*symbols
)
3496 struct symbol_search
*p
;
3497 struct symbol_search
*next
;
3499 for (p
= symbols
; p
!= NULL
; p
= next
)
3507 do_free_search_symbols_cleanup (void *symbols
)
3509 free_search_symbols (symbols
);
3513 make_cleanup_free_search_symbols (struct symbol_search
*symbols
)
3515 return make_cleanup (do_free_search_symbols_cleanup
, symbols
);
3519 /* Search the symbol table for matches to the regular expression REGEXP,
3520 returning the results in *MATCHES.
3522 Only symbols of KIND are searched:
3523 FUNCTIONS_NAMESPACE - search all functions
3524 TYPES_NAMESPACE - search all type names
3525 METHODS_NAMESPACE - search all methods NOT IMPLEMENTED
3526 VARIABLES_NAMESPACE - search all symbols, excluding functions, type names,
3527 and constants (enums)
3529 free_search_symbols should be called when *MATCHES is no longer needed.
3532 search_symbols (regexp
, kind
, nfiles
, files
, matches
)
3534 namespace_enum kind
;
3537 struct symbol_search
**matches
;
3540 register struct symtab
*s
;
3541 register struct partial_symtab
*ps
;
3542 register struct blockvector
*bv
;
3543 struct blockvector
*prev_bv
= 0;
3544 register struct block
*b
;
3547 register struct symbol
*sym
;
3548 struct partial_symbol
**psym
;
3549 struct objfile
*objfile
;
3550 struct minimal_symbol
*msymbol
;
3553 static enum minimal_symbol_type types
[]
3555 {mst_data
, mst_text
, mst_abs
, mst_unknown
};
3556 static enum minimal_symbol_type types2
[]
3558 {mst_bss
, mst_file_text
, mst_abs
, mst_unknown
};
3559 static enum minimal_symbol_type types3
[]
3561 {mst_file_data
, mst_solib_trampoline
, mst_abs
, mst_unknown
};
3562 static enum minimal_symbol_type types4
[]
3564 {mst_file_bss
, mst_text
, mst_abs
, mst_unknown
};
3565 enum minimal_symbol_type ourtype
;
3566 enum minimal_symbol_type ourtype2
;
3567 enum minimal_symbol_type ourtype3
;
3568 enum minimal_symbol_type ourtype4
;
3569 struct symbol_search
*sr
;
3570 struct symbol_search
*psr
;
3571 struct symbol_search
*tail
;
3572 struct cleanup
*old_chain
= NULL
;
3574 if (kind
< LABEL_NAMESPACE
)
3575 error ("must search on specific namespace");
3577 ourtype
= types
[(int) (kind
- VARIABLES_NAMESPACE
)];
3578 ourtype2
= types2
[(int) (kind
- VARIABLES_NAMESPACE
)];
3579 ourtype3
= types3
[(int) (kind
- VARIABLES_NAMESPACE
)];
3580 ourtype4
= types4
[(int) (kind
- VARIABLES_NAMESPACE
)];
3582 sr
= *matches
= NULL
;
3587 /* Make sure spacing is right for C++ operators.
3588 This is just a courtesy to make the matching less sensitive
3589 to how many spaces the user leaves between 'operator'
3590 and <TYPENAME> or <OPERATOR>. */
3592 char *opname
= operator_chars (regexp
, &opend
);
3595 int fix
= -1; /* -1 means ok; otherwise number of spaces needed. */
3596 if (isalpha (*opname
) || *opname
== '_' || *opname
== '$')
3598 /* There should 1 space between 'operator' and 'TYPENAME'. */
3599 if (opname
[-1] != ' ' || opname
[-2] == ' ')
3604 /* There should 0 spaces between 'operator' and 'OPERATOR'. */
3605 if (opname
[-1] == ' ')
3608 /* If wrong number of spaces, fix it. */
3611 char *tmp
= (char *) alloca (opend
- opname
+ 10);
3612 sprintf (tmp
, "operator%.*s%s", fix
, " ", opname
);
3617 if (0 != (val
= re_comp (regexp
)))
3618 error ("Invalid regexp (%s): %s", val
, regexp
);
3621 /* Search through the partial symtabs *first* for all symbols
3622 matching the regexp. That way we don't have to reproduce all of
3623 the machinery below. */
3625 ALL_PSYMTABS (objfile
, ps
)
3627 struct partial_symbol
**bound
, **gbound
, **sbound
;
3633 gbound
= objfile
->global_psymbols
.list
+ ps
->globals_offset
+ ps
->n_global_syms
;
3634 sbound
= objfile
->static_psymbols
.list
+ ps
->statics_offset
+ ps
->n_static_syms
;
3637 /* Go through all of the symbols stored in a partial
3638 symtab in one loop. */
3639 psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
3644 if (bound
== gbound
&& ps
->n_static_syms
!= 0)
3646 psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
3657 /* If it would match (logic taken from loop below)
3658 load the file and go on to the next one */
3659 if (file_matches (ps
->filename
, files
, nfiles
)
3660 && ((regexp
== NULL
|| SYMBOL_MATCHES_REGEXP (*psym
))
3661 && ((kind
== VARIABLES_NAMESPACE
&& SYMBOL_CLASS (*psym
) != LOC_TYPEDEF
3662 && SYMBOL_CLASS (*psym
) != LOC_BLOCK
)
3663 || (kind
== FUNCTIONS_NAMESPACE
&& SYMBOL_CLASS (*psym
) == LOC_BLOCK
)
3664 || (kind
== TYPES_NAMESPACE
&& SYMBOL_CLASS (*psym
) == LOC_TYPEDEF
)
3665 || (kind
== METHODS_NAMESPACE
&& SYMBOL_CLASS (*psym
) == LOC_BLOCK
))))
3667 PSYMTAB_TO_SYMTAB (ps
);
3675 /* Here, we search through the minimal symbol tables for functions
3676 and variables that match, and force their symbols to be read.
3677 This is in particular necessary for demangled variable names,
3678 which are no longer put into the partial symbol tables.
3679 The symbol will then be found during the scan of symtabs below.
3681 For functions, find_pc_symtab should succeed if we have debug info
3682 for the function, for variables we have to call lookup_symbol
3683 to determine if the variable has debug info.
3684 If the lookup fails, set found_misc so that we will rescan to print
3685 any matching symbols without debug info.
3688 if (nfiles
== 0 && (kind
== VARIABLES_NAMESPACE
|| kind
== FUNCTIONS_NAMESPACE
))
3690 ALL_MSYMBOLS (objfile
, msymbol
)
3692 if (MSYMBOL_TYPE (msymbol
) == ourtype
||
3693 MSYMBOL_TYPE (msymbol
) == ourtype2
||
3694 MSYMBOL_TYPE (msymbol
) == ourtype3
||
3695 MSYMBOL_TYPE (msymbol
) == ourtype4
)
3697 if (regexp
== NULL
|| SYMBOL_MATCHES_REGEXP (msymbol
))
3699 if (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
)))
3701 if (kind
== FUNCTIONS_NAMESPACE
3702 || lookup_symbol (SYMBOL_NAME (msymbol
),
3703 (struct block
*) NULL
,
3705 0, (struct symtab
**) NULL
) == NULL
)
3713 ALL_SYMTABS (objfile
, s
)
3715 bv
= BLOCKVECTOR (s
);
3716 /* Often many files share a blockvector.
3717 Scan each blockvector only once so that
3718 we don't get every symbol many times.
3719 It happens that the first symtab in the list
3720 for any given blockvector is the main file. */
3722 for (i
= GLOBAL_BLOCK
; i
<= STATIC_BLOCK
; i
++)
3724 b
= BLOCKVECTOR_BLOCK (bv
, i
);
3725 /* Skip the sort if this block is always sorted. */
3726 if (!BLOCK_SHOULD_SORT (b
))
3727 sort_block_syms (b
);
3728 for (j
= 0; j
< BLOCK_NSYMS (b
); j
++)
3731 sym
= BLOCK_SYM (b
, j
);
3732 if (file_matches (s
->filename
, files
, nfiles
)
3733 && ((regexp
== NULL
|| SYMBOL_MATCHES_REGEXP (sym
))
3734 && ((kind
== VARIABLES_NAMESPACE
&& SYMBOL_CLASS (sym
) != LOC_TYPEDEF
3735 && SYMBOL_CLASS (sym
) != LOC_BLOCK
3736 && SYMBOL_CLASS (sym
) != LOC_CONST
)
3737 || (kind
== FUNCTIONS_NAMESPACE
&& SYMBOL_CLASS (sym
) == LOC_BLOCK
)
3738 || (kind
== TYPES_NAMESPACE
&& SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
3739 || (kind
== METHODS_NAMESPACE
&& SYMBOL_CLASS (sym
) == LOC_BLOCK
))))
3742 psr
= (struct symbol_search
*) xmalloc (sizeof (struct symbol_search
));
3746 psr
->msymbol
= NULL
;
3751 old_chain
= make_cleanup_free_search_symbols (sr
);
3762 /* If there are no eyes, avoid all contact. I mean, if there are
3763 no debug symbols, then print directly from the msymbol_vector. */
3765 if (found_misc
|| kind
!= FUNCTIONS_NAMESPACE
)
3767 ALL_MSYMBOLS (objfile
, msymbol
)
3769 if (MSYMBOL_TYPE (msymbol
) == ourtype
||
3770 MSYMBOL_TYPE (msymbol
) == ourtype2
||
3771 MSYMBOL_TYPE (msymbol
) == ourtype3
||
3772 MSYMBOL_TYPE (msymbol
) == ourtype4
)
3774 if (regexp
== NULL
|| SYMBOL_MATCHES_REGEXP (msymbol
))
3776 /* Functions: Look up by address. */
3777 if (kind
!= FUNCTIONS_NAMESPACE
||
3778 (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
))))
3780 /* Variables/Absolutes: Look up by name */
3781 if (lookup_symbol (SYMBOL_NAME (msymbol
),
3782 (struct block
*) NULL
, VAR_NAMESPACE
,
3783 0, (struct symtab
**) NULL
) == NULL
)
3786 psr
= (struct symbol_search
*) xmalloc (sizeof (struct symbol_search
));
3788 psr
->msymbol
= msymbol
;
3795 old_chain
= make_cleanup_free_search_symbols (sr
);
3809 discard_cleanups (old_chain
);
3812 /* Helper function for symtab_symbol_info, this function uses
3813 the data returned from search_symbols() to print information
3814 regarding the match to gdb_stdout.
3817 print_symbol_info (namespace_enum kind
, struct symtab
*s
, struct symbol
*sym
,
3818 int block
, char *last
)
3820 if (last
== NULL
|| strcmp (last
, s
->filename
) != 0)
3822 fputs_filtered ("\nFile ", gdb_stdout
);
3823 fputs_filtered (s
->filename
, gdb_stdout
);
3824 fputs_filtered (":\n", gdb_stdout
);
3827 if (kind
!= TYPES_NAMESPACE
&& block
== STATIC_BLOCK
)
3828 printf_filtered ("static ");
3830 /* Typedef that is not a C++ class */
3831 if (kind
== TYPES_NAMESPACE
3832 && SYMBOL_NAMESPACE (sym
) != STRUCT_NAMESPACE
)
3833 typedef_print (SYMBOL_TYPE (sym
), sym
, gdb_stdout
);
3834 /* variable, func, or typedef-that-is-c++-class */
3835 else if (kind
< TYPES_NAMESPACE
||
3836 (kind
== TYPES_NAMESPACE
&&
3837 SYMBOL_NAMESPACE (sym
) == STRUCT_NAMESPACE
))
3839 type_print (SYMBOL_TYPE (sym
),
3840 (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
3841 ? "" : SYMBOL_SOURCE_NAME (sym
)),
3844 printf_filtered (";\n");
3849 /* Tiemann says: "info methods was never implemented." */
3850 char *demangled_name
;
3851 c_type_print_base (TYPE_FN_FIELD_TYPE (t
, block
),
3853 c_type_print_varspec_prefix (TYPE_FN_FIELD_TYPE (t
, block
),
3855 if (TYPE_FN_FIELD_STUB (t
, block
))
3856 check_stub_method (TYPE_DOMAIN_TYPE (type
), j
, block
);
3858 cplus_demangle (TYPE_FN_FIELD_PHYSNAME (t
, block
),
3859 DMGL_ANSI
| DMGL_PARAMS
);
3860 if (demangled_name
== NULL
)
3861 fprintf_filtered (stream
, "<badly mangled name %s>",
3862 TYPE_FN_FIELD_PHYSNAME (t
, block
));
3865 fputs_filtered (demangled_name
, stream
);
3866 free (demangled_name
);
3872 /* This help function for symtab_symbol_info() prints information
3873 for non-debugging symbols to gdb_stdout.
3876 print_msymbol_info (struct minimal_symbol
*msymbol
)
3878 printf_filtered (" %08lx %s\n",
3879 (unsigned long) SYMBOL_VALUE_ADDRESS (msymbol
),
3880 SYMBOL_SOURCE_NAME (msymbol
));
3883 /* This is the guts of the commands "info functions", "info types", and
3884 "info variables". It calls search_symbols to find all matches and then
3885 print_[m]symbol_info to print out some useful information about the
3889 symtab_symbol_info (char *regexp
, namespace_enum kind
, int from_tty
)
3891 static char *classnames
[]
3893 {"variable", "function", "type", "method"};
3894 struct symbol_search
*symbols
;
3895 struct symbol_search
*p
;
3896 struct cleanup
*old_chain
;
3897 char *last_filename
= NULL
;
3900 /* must make sure that if we're interrupted, symbols gets freed */
3901 search_symbols (regexp
, kind
, 0, (char **) NULL
, &symbols
);
3902 old_chain
= make_cleanup_free_search_symbols (symbols
);
3904 printf_filtered (regexp
3905 ? "All %ss matching regular expression \"%s\":\n"
3906 : "All defined %ss:\n",
3907 classnames
[(int) (kind
- VARIABLES_NAMESPACE
)], regexp
);
3909 for (p
= symbols
; p
!= NULL
; p
= p
->next
)
3913 if (p
->msymbol
!= NULL
)
3917 printf_filtered ("\nNon-debugging symbols:\n");
3920 print_msymbol_info (p
->msymbol
);
3924 print_symbol_info (kind
,
3929 last_filename
= p
->symtab
->filename
;
3933 do_cleanups (old_chain
);
3937 variables_info (char *regexp
, int from_tty
)
3939 symtab_symbol_info (regexp
, VARIABLES_NAMESPACE
, from_tty
);
3943 functions_info (char *regexp
, int from_tty
)
3945 symtab_symbol_info (regexp
, FUNCTIONS_NAMESPACE
, from_tty
);
3950 types_info (char *regexp
, int from_tty
)
3952 symtab_symbol_info (regexp
, TYPES_NAMESPACE
, from_tty
);
3956 /* Tiemann says: "info methods was never implemented." */
3958 methods_info (char *regexp
)
3960 symtab_symbol_info (regexp
, METHODS_NAMESPACE
, 0, from_tty
);
3964 /* Breakpoint all functions matching regular expression. */
3967 rbreak_command_wrapper (char *regexp
, int from_tty
)
3969 rbreak_command (regexp
, from_tty
);
3973 rbreak_command (char *regexp
, int from_tty
)
3975 struct symbol_search
*ss
;
3976 struct symbol_search
*p
;
3977 struct cleanup
*old_chain
;
3979 search_symbols (regexp
, FUNCTIONS_NAMESPACE
, 0, (char **) NULL
, &ss
);
3980 old_chain
= make_cleanup_free_search_symbols (ss
);
3982 for (p
= ss
; p
!= NULL
; p
= p
->next
)
3984 if (p
->msymbol
== NULL
)
3986 char *string
= (char *) alloca (strlen (p
->symtab
->filename
)
3987 + strlen (SYMBOL_NAME (p
->symbol
))
3989 strcpy (string
, p
->symtab
->filename
);
3990 strcat (string
, ":'");
3991 strcat (string
, SYMBOL_NAME (p
->symbol
));
3992 strcat (string
, "'");
3993 break_command (string
, from_tty
);
3994 print_symbol_info (FUNCTIONS_NAMESPACE
,
3998 p
->symtab
->filename
);
4002 break_command (SYMBOL_NAME (p
->msymbol
), from_tty
);
4003 printf_filtered ("<function, no debug info> %s;\n",
4004 SYMBOL_SOURCE_NAME (p
->msymbol
));
4008 do_cleanups (old_chain
);
4012 /* Return Nonzero if block a is lexically nested within block b,
4013 or if a and b have the same pc range.
4014 Return zero otherwise. */
4016 contained_in (struct block
*a
, struct block
*b
)
4020 return BLOCK_START (a
) >= BLOCK_START (b
)
4021 && BLOCK_END (a
) <= BLOCK_END (b
);
4025 /* Helper routine for make_symbol_completion_list. */
4027 static int return_val_size
;
4028 static int return_val_index
;
4029 static char **return_val
;
4031 #define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \
4033 if (SYMBOL_DEMANGLED_NAME (symbol) != NULL) \
4034 /* Put only the mangled name on the list. */ \
4035 /* Advantage: "b foo<TAB>" completes to "b foo(int, int)" */ \
4036 /* Disadvantage: "b foo__i<TAB>" doesn't complete. */ \
4037 completion_list_add_name \
4038 (SYMBOL_DEMANGLED_NAME (symbol), (sym_text), (len), (text), (word)); \
4040 completion_list_add_name \
4041 (SYMBOL_NAME (symbol), (sym_text), (len), (text), (word)); \
4044 /* Test to see if the symbol specified by SYMNAME (which is already
4045 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
4046 characters. If so, add it to the current completion list. */
4049 completion_list_add_name (char *symname
, char *sym_text
, int sym_text_len
,
4050 char *text
, char *word
)
4055 /* clip symbols that cannot match */
4057 if (strncmp (symname
, sym_text
, sym_text_len
) != 0)
4062 /* Clip any symbol names that we've already considered. (This is a
4063 time optimization) */
4065 for (i
= 0; i
< return_val_index
; ++i
)
4067 if (STREQ (symname
, return_val
[i
]))
4073 /* We have a match for a completion, so add SYMNAME to the current list
4074 of matches. Note that the name is moved to freshly malloc'd space. */
4078 if (word
== sym_text
)
4080 new = xmalloc (strlen (symname
) + 5);
4081 strcpy (new, symname
);
4083 else if (word
> sym_text
)
4085 /* Return some portion of symname. */
4086 new = xmalloc (strlen (symname
) + 5);
4087 strcpy (new, symname
+ (word
- sym_text
));
4091 /* Return some of SYM_TEXT plus symname. */
4092 new = xmalloc (strlen (symname
) + (sym_text
- word
) + 5);
4093 strncpy (new, word
, sym_text
- word
);
4094 new[sym_text
- word
] = '\0';
4095 strcat (new, symname
);
4098 /* Recheck for duplicates if we intend to add a modified symbol. */
4099 if (word
!= sym_text
)
4101 for (i
= 0; i
< return_val_index
; ++i
)
4103 if (STREQ (new, return_val
[i
]))
4111 if (return_val_index
+ 3 > return_val_size
)
4113 newsize
= (return_val_size
*= 2) * sizeof (char *);
4114 return_val
= (char **) xrealloc ((char *) return_val
, newsize
);
4116 return_val
[return_val_index
++] = new;
4117 return_val
[return_val_index
] = NULL
;
4121 /* Return a NULL terminated array of all symbols (regardless of class) which
4122 begin by matching TEXT. If the answer is no symbols, then the return value
4123 is an array which contains only a NULL pointer.
4125 Problem: All of the symbols have to be copied because readline frees them.
4126 I'm not going to worry about this; hopefully there won't be that many. */
4129 make_symbol_completion_list (char *text
, char *word
)
4131 register struct symbol
*sym
;
4132 register struct symtab
*s
;
4133 register struct partial_symtab
*ps
;
4134 register struct minimal_symbol
*msymbol
;
4135 register struct objfile
*objfile
;
4136 register struct block
*b
, *surrounding_static_block
= 0;
4138 struct partial_symbol
**psym
;
4139 /* The symbol we are completing on. Points in same buffer as text. */
4141 /* Length of sym_text. */
4144 /* Now look for the symbol we are supposed to complete on.
4145 FIXME: This should be language-specific. */
4149 char *quote_pos
= NULL
;
4151 /* First see if this is a quoted string. */
4153 for (p
= text
; *p
!= '\0'; ++p
)
4155 if (quote_found
!= '\0')
4157 if (*p
== quote_found
)
4158 /* Found close quote. */
4160 else if (*p
== '\\' && p
[1] == quote_found
)
4161 /* A backslash followed by the quote character
4162 doesn't end the string. */
4165 else if (*p
== '\'' || *p
== '"')
4171 if (quote_found
== '\'')
4172 /* A string within single quotes can be a symbol, so complete on it. */
4173 sym_text
= quote_pos
+ 1;
4174 else if (quote_found
== '"')
4175 /* A double-quoted string is never a symbol, nor does it make sense
4176 to complete it any other way. */
4180 /* It is not a quoted string. Break it based on the characters
4181 which are in symbols. */
4184 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
4193 sym_text_len
= strlen (sym_text
);
4195 return_val_size
= 100;
4196 return_val_index
= 0;
4197 return_val
= (char **) xmalloc ((return_val_size
+ 1) * sizeof (char *));
4198 return_val
[0] = NULL
;
4200 /* Look through the partial symtabs for all symbols which begin
4201 by matching SYM_TEXT. Add each one that you find to the list. */
4203 ALL_PSYMTABS (objfile
, ps
)
4205 /* If the psymtab's been read in we'll get it when we search
4206 through the blockvector. */
4210 for (psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
4211 psym
< (objfile
->global_psymbols
.list
+ ps
->globals_offset
4212 + ps
->n_global_syms
);
4215 /* If interrupted, then quit. */
4217 COMPLETION_LIST_ADD_SYMBOL (*psym
, sym_text
, sym_text_len
, text
, word
);
4220 for (psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
4221 psym
< (objfile
->static_psymbols
.list
+ ps
->statics_offset
4222 + ps
->n_static_syms
);
4226 COMPLETION_LIST_ADD_SYMBOL (*psym
, sym_text
, sym_text_len
, text
, word
);
4230 /* At this point scan through the misc symbol vectors and add each
4231 symbol you find to the list. Eventually we want to ignore
4232 anything that isn't a text symbol (everything else will be
4233 handled by the psymtab code above). */
4235 ALL_MSYMBOLS (objfile
, msymbol
)
4238 COMPLETION_LIST_ADD_SYMBOL (msymbol
, sym_text
, sym_text_len
, text
, word
);
4241 /* Search upwards from currently selected frame (so that we can
4242 complete on local vars. */
4244 for (b
= get_selected_block (); b
!= NULL
; b
= BLOCK_SUPERBLOCK (b
))
4246 if (!BLOCK_SUPERBLOCK (b
))
4248 surrounding_static_block
= b
; /* For elmin of dups */
4251 /* Also catch fields of types defined in this places which match our
4252 text string. Only complete on types visible from current context. */
4254 for (i
= 0; i
< BLOCK_NSYMS (b
); i
++)
4256 sym
= BLOCK_SYM (b
, i
);
4257 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4258 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
4260 struct type
*t
= SYMBOL_TYPE (sym
);
4261 enum type_code c
= TYPE_CODE (t
);
4263 if (c
== TYPE_CODE_UNION
|| c
== TYPE_CODE_STRUCT
)
4265 for (j
= TYPE_N_BASECLASSES (t
); j
< TYPE_NFIELDS (t
); j
++)
4267 if (TYPE_FIELD_NAME (t
, j
))
4269 completion_list_add_name (TYPE_FIELD_NAME (t
, j
),
4270 sym_text
, sym_text_len
, text
, word
);
4278 /* Go through the symtabs and check the externs and statics for
4279 symbols which match. */
4281 ALL_SYMTABS (objfile
, s
)
4284 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
4285 for (i
= 0; i
< BLOCK_NSYMS (b
); i
++)
4287 sym
= BLOCK_SYM (b
, i
);
4288 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4292 ALL_SYMTABS (objfile
, s
)
4295 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
4296 /* Don't do this block twice. */
4297 if (b
== surrounding_static_block
)
4299 for (i
= 0; i
< BLOCK_NSYMS (b
); i
++)
4301 sym
= BLOCK_SYM (b
, i
);
4302 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4306 return (return_val
);
4309 /* Determine if PC is in the prologue of a function. The prologue is the area
4310 between the first instruction of a function, and the first executable line.
4311 Returns 1 if PC *might* be in prologue, 0 if definately *not* in prologue.
4313 If non-zero, func_start is where we think the prologue starts, possibly
4314 by previous examination of symbol table information.
4318 in_prologue (CORE_ADDR pc
, CORE_ADDR func_start
)
4320 struct symtab_and_line sal
;
4321 CORE_ADDR func_addr
, func_end
;
4323 /* We have several sources of information we can consult to figure
4325 - Compilers usually emit line number info that marks the prologue
4326 as its own "source line". So the ending address of that "line"
4327 is the end of the prologue. If available, this is the most
4329 - The minimal symbols and partial symbols, which can usually tell
4330 us the starting and ending addresses of a function.
4331 - If we know the function's start address, we can call the
4332 architecture-defined SKIP_PROLOGUE function to analyze the
4333 instruction stream and guess where the prologue ends.
4334 - Our `func_start' argument; if non-zero, this is the caller's
4335 best guess as to the function's entry point. At the time of
4336 this writing, handle_inferior_event doesn't get this right, so
4337 it should be our last resort. */
4339 /* Consult the partial symbol table, to find which function
4341 if (! find_pc_partial_function (pc
, NULL
, &func_addr
, &func_end
))
4343 CORE_ADDR prologue_end
;
4345 /* We don't even have minsym information, so fall back to using
4346 func_start, if given. */
4348 return 1; /* We *might* be in a prologue. */
4350 prologue_end
= SKIP_PROLOGUE (func_start
);
4352 return func_start
<= pc
&& pc
< prologue_end
;
4355 /* If we have line number information for the function, that's
4356 usually pretty reliable. */
4357 sal
= find_pc_line (func_addr
, 0);
4359 /* Now sal describes the source line at the function's entry point,
4360 which (by convention) is the prologue. The end of that "line",
4361 sal.end, is the end of the prologue.
4363 Note that, for functions whose source code is all on a single
4364 line, the line number information doesn't always end up this way.
4365 So we must verify that our purported end-of-prologue address is
4366 *within* the function, not at its start or end. */
4368 || sal
.end
<= func_addr
4369 || func_end
<= sal
.end
)
4371 /* We don't have any good line number info, so use the minsym
4372 information, together with the architecture-specific prologue
4374 CORE_ADDR prologue_end
= SKIP_PROLOGUE (func_addr
);
4376 return func_addr
<= pc
&& pc
< prologue_end
;
4379 /* We have line number info, and it looks good. */
4380 return func_addr
<= pc
&& pc
< sal
.end
;
4384 /* Begin overload resolution functions */
4385 /* Helper routine for make_symbol_completion_list. */
4387 static int sym_return_val_size
;
4388 static int sym_return_val_index
;
4389 static struct symbol
**sym_return_val
;
4391 /* Test to see if the symbol specified by SYMNAME (which is already
4392 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
4393 characters. If so, add it to the current completion list. */
4396 overload_list_add_symbol (struct symbol
*sym
, char *oload_name
)
4401 /* Get the demangled name without parameters */
4402 char *sym_name
= cplus_demangle (SYMBOL_NAME (sym
), DMGL_ARM
| DMGL_ANSI
);
4405 sym_name
= (char *) xmalloc (strlen (SYMBOL_NAME (sym
)) + 1);
4406 strcpy (sym_name
, SYMBOL_NAME (sym
));
4409 /* skip symbols that cannot match */
4410 if (strcmp (sym_name
, oload_name
) != 0)
4416 /* If there is no type information, we can't do anything, so skip */
4417 if (SYMBOL_TYPE (sym
) == NULL
)
4420 /* skip any symbols that we've already considered. */
4421 for (i
= 0; i
< sym_return_val_index
; ++i
)
4422 if (!strcmp (SYMBOL_NAME (sym
), SYMBOL_NAME (sym_return_val
[i
])))
4425 /* We have a match for an overload instance, so add SYM to the current list
4426 * of overload instances */
4427 if (sym_return_val_index
+ 3 > sym_return_val_size
)
4429 newsize
= (sym_return_val_size
*= 2) * sizeof (struct symbol
*);
4430 sym_return_val
= (struct symbol
**) xrealloc ((char *) sym_return_val
, newsize
);
4432 sym_return_val
[sym_return_val_index
++] = sym
;
4433 sym_return_val
[sym_return_val_index
] = NULL
;
4438 /* Return a null-terminated list of pointers to function symbols that
4439 * match name of the supplied symbol FSYM.
4440 * This is used in finding all overloaded instances of a function name.
4441 * This has been modified from make_symbol_completion_list. */
4445 make_symbol_overload_list (struct symbol
*fsym
)
4447 register struct symbol
*sym
;
4448 register struct symtab
*s
;
4449 register struct partial_symtab
*ps
;
4450 register struct objfile
*objfile
;
4451 register struct block
*b
, *surrounding_static_block
= 0;
4453 /* The name we are completing on. */
4454 char *oload_name
= NULL
;
4455 /* Length of name. */
4456 int oload_name_len
= 0;
4458 /* Look for the symbol we are supposed to complete on.
4459 * FIXME: This should be language-specific. */
4461 oload_name
= cplus_demangle (SYMBOL_NAME (fsym
), DMGL_ARM
| DMGL_ANSI
);
4464 oload_name
= (char *) xmalloc (strlen (SYMBOL_NAME (fsym
)) + 1);
4465 strcpy (oload_name
, SYMBOL_NAME (fsym
));
4467 oload_name_len
= strlen (oload_name
);
4469 sym_return_val_size
= 100;
4470 sym_return_val_index
= 0;
4471 sym_return_val
= (struct symbol
**) xmalloc ((sym_return_val_size
+ 1) * sizeof (struct symbol
*));
4472 sym_return_val
[0] = NULL
;
4474 /* Look through the partial symtabs for all symbols which begin
4475 by matching OLOAD_NAME. Make sure we read that symbol table in. */
4477 ALL_PSYMTABS (objfile
, ps
)
4479 struct partial_symbol
**psym
;
4481 /* If the psymtab's been read in we'll get it when we search
4482 through the blockvector. */
4486 for (psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
4487 psym
< (objfile
->global_psymbols
.list
+ ps
->globals_offset
4488 + ps
->n_global_syms
);
4491 /* If interrupted, then quit. */
4493 /* This will cause the symbol table to be read if it has not yet been */
4494 s
= PSYMTAB_TO_SYMTAB (ps
);
4497 for (psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
4498 psym
< (objfile
->static_psymbols
.list
+ ps
->statics_offset
4499 + ps
->n_static_syms
);
4503 /* This will cause the symbol table to be read if it has not yet been */
4504 s
= PSYMTAB_TO_SYMTAB (ps
);
4508 /* Search upwards from currently selected frame (so that we can
4509 complete on local vars. */
4511 for (b
= get_selected_block (); b
!= NULL
; b
= BLOCK_SUPERBLOCK (b
))
4513 if (!BLOCK_SUPERBLOCK (b
))
4515 surrounding_static_block
= b
; /* For elimination of dups */
4518 /* Also catch fields of types defined in this places which match our
4519 text string. Only complete on types visible from current context. */
4521 for (i
= 0; i
< BLOCK_NSYMS (b
); i
++)
4523 sym
= BLOCK_SYM (b
, i
);
4524 overload_list_add_symbol (sym
, oload_name
);
4528 /* Go through the symtabs and check the externs and statics for
4529 symbols which match. */
4531 ALL_SYMTABS (objfile
, s
)
4534 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
4535 for (i
= 0; i
< BLOCK_NSYMS (b
); i
++)
4537 sym
= BLOCK_SYM (b
, i
);
4538 overload_list_add_symbol (sym
, oload_name
);
4542 ALL_SYMTABS (objfile
, s
)
4545 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
4546 /* Don't do this block twice. */
4547 if (b
== surrounding_static_block
)
4549 for (i
= 0; i
< BLOCK_NSYMS (b
); i
++)
4551 sym
= BLOCK_SYM (b
, i
);
4552 overload_list_add_symbol (sym
, oload_name
);
4558 return (sym_return_val
);
4561 /* End of overload resolution functions */
4565 _initialize_symtab (void)
4567 add_info ("variables", variables_info
,
4568 "All global and static variable names, or those matching REGEXP.");
4570 add_com ("whereis", class_info
, variables_info
,
4571 "All global and static variable names, or those matching REGEXP.");
4573 add_info ("functions", functions_info
,
4574 "All function names, or those matching REGEXP.");
4577 /* FIXME: This command has at least the following problems:
4578 1. It prints builtin types (in a very strange and confusing fashion).
4579 2. It doesn't print right, e.g. with
4580 typedef struct foo *FOO
4581 type_print prints "FOO" when we want to make it (in this situation)
4582 print "struct foo *".
4583 I also think "ptype" or "whatis" is more likely to be useful (but if
4584 there is much disagreement "info types" can be fixed). */
4585 add_info ("types", types_info
,
4586 "All type names, or those matching REGEXP.");
4589 add_info ("methods", methods_info
,
4590 "All method names, or those matching REGEXP::REGEXP.\n\
4591 If the class qualifier is omitted, it is assumed to be the current scope.\n\
4592 If the first REGEXP is omitted, then all methods matching the second REGEXP\n\
4595 add_info ("sources", sources_info
,
4596 "Source files in the program.");
4598 add_com ("rbreak", class_breakpoint
, rbreak_command
,
4599 "Set a breakpoint for all functions matching REGEXP.");
4603 add_com ("lf", class_info
, sources_info
, "Source files in the program");
4604 add_com ("lg", class_info
, variables_info
,
4605 "All global and static variable names, or those matching REGEXP.");
4608 /* Initialize the one built-in type that isn't language dependent... */
4609 builtin_type_error
= init_type (TYPE_CODE_ERROR
, 0, 0,
4610 "<unknown type>", (struct objfile
*) NULL
);