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 /* Search specified block and its superiors. */
591 sym
= lookup_block_symbol (block
, name
, namespace);
597 /* Search the list of symtabs for one which contains the
598 address of the start of this block. */
599 ALL_SYMTABS (objfile
, s
)
601 bv
= BLOCKVECTOR (s
);
602 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
603 if (BLOCK_START (b
) <= BLOCK_START (block
)
604 && BLOCK_END (b
) > BLOCK_START (block
))
611 return fixup_symbol_section (sym
, objfile
);
613 block
= BLOCK_SUPERBLOCK (block
);
616 /* FIXME: this code is never executed--block is always NULL at this
617 point. What is it trying to do, anyway? We already should have
618 checked the STATIC_BLOCK above (it is the superblock of top-level
619 blocks). Why is VAR_NAMESPACE special-cased? */
620 /* Don't need to mess with the psymtabs; if we have a block,
621 that file is read in. If we don't, then we deal later with
622 all the psymtab stuff that needs checking. */
623 /* Note (RT): The following never-executed code looks unnecessary to me also.
624 * If we change the code to use the original (passed-in)
625 * value of 'block', we could cause it to execute, but then what
626 * would it do? The STATIC_BLOCK of the symtab containing the passed-in
627 * 'block' was already searched by the above code. And the STATIC_BLOCK's
628 * of *other* symtabs (those files not containing 'block' lexically)
629 * should not contain 'block' address-wise. So we wouldn't expect this
630 * code to find any 'sym''s that were not found above. I vote for
631 * deleting the following paragraph of code.
633 if (namespace == VAR_NAMESPACE
&& block
!= NULL
)
636 /* Find the right symtab. */
637 ALL_SYMTABS (objfile
, s
)
639 bv
= BLOCKVECTOR (s
);
640 b
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
641 if (BLOCK_START (b
) <= BLOCK_START (block
)
642 && BLOCK_END (b
) > BLOCK_START (block
))
644 sym
= lookup_block_symbol (b
, name
, VAR_NAMESPACE
);
650 return fixup_symbol_section (sym
, objfile
);
657 /* C++: If requested to do so by the caller,
658 check to see if NAME is a field of `this'. */
659 if (is_a_field_of_this
)
661 struct value
*v
= value_of_this (0);
663 *is_a_field_of_this
= 0;
664 if (v
&& check_field (v
, name
))
666 *is_a_field_of_this
= 1;
673 /* Now search all global blocks. Do the symtab's first, then
674 check the psymtab's. If a psymtab indicates the existence
675 of the desired name as a global, then do psymtab-to-symtab
676 conversion on the fly and return the found symbol. */
678 ALL_SYMTABS (objfile
, s
)
680 bv
= BLOCKVECTOR (s
);
681 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
682 sym
= lookup_block_symbol (block
, name
, namespace);
688 return fixup_symbol_section (sym
, objfile
);
694 /* Check for the possibility of the symbol being a function or
695 a mangled variable that is stored in one of the minimal symbol tables.
696 Eventually, all global symbols might be resolved in this way. */
698 if (namespace == VAR_NAMESPACE
)
700 msymbol
= lookup_minimal_symbol (name
, NULL
, NULL
);
703 s
= find_pc_sect_symtab (SYMBOL_VALUE_ADDRESS (msymbol
),
704 SYMBOL_BFD_SECTION (msymbol
));
707 /* This is a function which has a symtab for its address. */
708 bv
= BLOCKVECTOR (s
);
709 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
710 sym
= lookup_block_symbol (block
, SYMBOL_NAME (msymbol
),
712 /* We kept static functions in minimal symbol table as well as
713 in static scope. We want to find them in the symbol table. */
716 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
717 sym
= lookup_block_symbol (block
, SYMBOL_NAME (msymbol
),
721 /* sym == 0 if symbol was found in the minimal symbol table
722 but not in the symtab.
723 Return 0 to use the msymbol definition of "foo_".
725 This happens for Fortran "foo_" symbols,
726 which are "foo" in the symtab.
728 This can also happen if "asm" is used to make a
729 regular symbol but not a debugging symbol, e.g.
736 return fixup_symbol_section (sym
, objfile
);
738 else if (MSYMBOL_TYPE (msymbol
) != mst_text
739 && MSYMBOL_TYPE (msymbol
) != mst_file_text
740 && !STREQ (name
, SYMBOL_NAME (msymbol
)))
742 /* This is a mangled variable, look it up by its
744 return lookup_symbol (SYMBOL_NAME (msymbol
), block
,
745 namespace, is_a_field_of_this
, symtab
);
747 /* There are no debug symbols for this file, or we are looking
748 for an unmangled variable.
749 Try to find a matching static symbol below. */
755 ALL_PSYMTABS (objfile
, ps
)
757 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, 1, namespace))
759 s
= PSYMTAB_TO_SYMTAB (ps
);
760 bv
= BLOCKVECTOR (s
);
761 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
762 sym
= lookup_block_symbol (block
, name
, namespace);
765 /* This shouldn't be necessary, but as a last resort
766 * try looking in the statics even though the psymtab
767 * claimed the symbol was global. It's possible that
768 * the psymtab gets it wrong in some cases.
770 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
771 sym
= lookup_block_symbol (block
, name
, namespace);
773 error ("Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\
774 %s may be an inlined function, or may be a template function\n\
775 (if a template, try specifying an instantiation: %s<type>).",
776 name
, ps
->filename
, name
, name
);
780 return fixup_symbol_section (sym
, objfile
);
784 /* Now search all static file-level symbols.
785 Not strictly correct, but more useful than an error.
786 Do the symtabs first, then check the psymtabs.
787 If a psymtab indicates the existence
788 of the desired name as a file-level static, then do psymtab-to-symtab
789 conversion on the fly and return the found symbol. */
791 ALL_SYMTABS (objfile
, s
)
793 bv
= BLOCKVECTOR (s
);
794 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
795 sym
= lookup_block_symbol (block
, name
, namespace);
801 return fixup_symbol_section (sym
, objfile
);
805 ALL_PSYMTABS (objfile
, ps
)
807 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, 0, namespace))
809 s
= PSYMTAB_TO_SYMTAB (ps
);
810 bv
= BLOCKVECTOR (s
);
811 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
812 sym
= lookup_block_symbol (block
, name
, namespace);
815 /* This shouldn't be necessary, but as a last resort
816 * try looking in the globals even though the psymtab
817 * claimed the symbol was static. It's possible that
818 * the psymtab gets it wrong in some cases.
820 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
821 sym
= lookup_block_symbol (block
, name
, namespace);
823 error ("Internal: static symbol `%s' found in %s psymtab but not in symtab.\n\
824 %s may be an inlined function, or may be a template function\n\
825 (if a template, try specifying an instantiation: %s<type>).",
826 name
, ps
->filename
, name
, name
);
830 return fixup_symbol_section (sym
, objfile
);
836 /* Check for the possibility of the symbol being a function or
837 a global variable that is stored in one of the minimal symbol tables.
838 The "minimal symbol table" is built from linker-supplied info.
840 RT: I moved this check to last, after the complete search of
841 the global (p)symtab's and static (p)symtab's. For HP-generated
842 symbol tables, this check was causing a premature exit from
843 lookup_symbol with NULL return, and thus messing up symbol lookups
844 of things like "c::f". It seems to me a check of the minimal
845 symbol table ought to be a last resort in any case. I'm vaguely
846 worried about the comment below which talks about FORTRAN routines "foo_"
847 though... is it saying we need to do the "minsym" check before
848 the static check in this case?
851 if (namespace == VAR_NAMESPACE
)
853 msymbol
= lookup_minimal_symbol (name
, NULL
, NULL
);
856 /* OK, we found a minimal symbol in spite of not
857 * finding any symbol. There are various possible
858 * explanations for this. One possibility is the symbol
859 * exists in code not compiled -g. Another possibility
860 * is that the 'psymtab' isn't doing its job.
861 * A third possibility, related to #2, is that we were confused
862 * by name-mangling. For instance, maybe the psymtab isn't
863 * doing its job because it only know about demangled
864 * names, but we were given a mangled name...
867 /* We first use the address in the msymbol to try to
868 * locate the appropriate symtab. Note that find_pc_symtab()
869 * has a side-effect of doing psymtab-to-symtab expansion,
870 * for the found symtab.
872 s
= find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
));
875 bv
= BLOCKVECTOR (s
);
876 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
877 sym
= lookup_block_symbol (block
, SYMBOL_NAME (msymbol
),
879 /* We kept static functions in minimal symbol table as well as
880 in static scope. We want to find them in the symbol table. */
883 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
884 sym
= lookup_block_symbol (block
, SYMBOL_NAME (msymbol
),
887 /* If we found one, return it */
895 /* If we get here with sym == 0, the symbol was
896 found in the minimal symbol table
897 but not in the symtab.
898 Fall through and return 0 to use the msymbol
899 definition of "foo_".
900 (Note that outer code generally follows up a call
901 to this routine with a call to lookup_minimal_symbol(),
902 so a 0 return means we'll just flow into that other routine).
904 This happens for Fortran "foo_" symbols,
905 which are "foo" in the symtab.
907 This can also happen if "asm" is used to make a
908 regular symbol but not a debugging symbol, e.g.
914 /* If the lookup-by-address fails, try repeating the
915 * entire lookup process with the symbol name from
916 * the msymbol (if different from the original symbol name).
918 else if (MSYMBOL_TYPE (msymbol
) != mst_text
919 && MSYMBOL_TYPE (msymbol
) != mst_file_text
920 && !STREQ (name
, SYMBOL_NAME (msymbol
)))
922 return lookup_symbol (SYMBOL_NAME (msymbol
), block
,
923 namespace, is_a_field_of_this
, symtab
);
935 /* Look, in partial_symtab PST, for symbol NAME. Check the global
936 symbols if GLOBAL, the static symbols if not */
938 static struct partial_symbol
*
939 lookup_partial_symbol (struct partial_symtab
*pst
, const char *name
, int global
,
940 namespace_enum
namespace)
942 struct partial_symbol
*temp
;
943 struct partial_symbol
**start
, **psym
;
944 struct partial_symbol
**top
, **bottom
, **center
;
945 int length
= (global
? pst
->n_global_syms
: pst
->n_static_syms
);
946 int do_linear_search
= 1;
953 pst
->objfile
->global_psymbols
.list
+ pst
->globals_offset
:
954 pst
->objfile
->static_psymbols
.list
+ pst
->statics_offset
);
956 if (global
) /* This means we can use a binary search. */
958 do_linear_search
= 0;
960 /* Binary search. This search is guaranteed to end with center
961 pointing at the earliest partial symbol with the correct
962 name. At that point *all* partial symbols with that name
963 will be checked against the correct namespace. */
966 top
= start
+ length
- 1;
969 center
= bottom
+ (top
- bottom
) / 2;
972 if (!do_linear_search
973 && (SYMBOL_LANGUAGE (*center
) == language_java
))
975 do_linear_search
= 1;
977 if (STRCMP (SYMBOL_NAME (*center
), name
) >= 0)
986 if (!(top
== bottom
))
989 /* djb - 2000-06-03 - Use SYMBOL_MATCHES_NAME, not a strcmp, so
990 we don't have to force a linear search on C++. Probably holds true
991 for JAVA as well, no way to check.*/
992 while (SYMBOL_MATCHES_NAME (*top
,name
))
994 if (SYMBOL_NAMESPACE (*top
) == namespace)
1002 /* Can't use a binary search or else we found during the binary search that
1003 we should also do a linear search. */
1005 if (do_linear_search
)
1007 for (psym
= start
; psym
< start
+ length
; psym
++)
1009 if (namespace == SYMBOL_NAMESPACE (*psym
))
1011 if (SYMBOL_MATCHES_NAME (*psym
, name
))
1022 /* Look up a type named NAME in the struct_namespace. The type returned
1023 must not be opaque -- i.e., must have at least one field defined
1025 This code was modelled on lookup_symbol -- the parts not relevant to looking
1026 up types were just left out. In particular it's assumed here that types
1027 are available in struct_namespace and only at file-static or global blocks. */
1031 lookup_transparent_type (const char *name
)
1033 register struct symbol
*sym
;
1034 register struct symtab
*s
= NULL
;
1035 register struct partial_symtab
*ps
;
1036 struct blockvector
*bv
;
1037 register struct objfile
*objfile
;
1038 register struct block
*block
;
1040 /* Now search all the global symbols. Do the symtab's first, then
1041 check the psymtab's. If a psymtab indicates the existence
1042 of the desired name as a global, then do psymtab-to-symtab
1043 conversion on the fly and return the found symbol. */
1045 ALL_SYMTABS (objfile
, s
)
1047 bv
= BLOCKVECTOR (s
);
1048 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1049 sym
= lookup_block_symbol (block
, name
, STRUCT_NAMESPACE
);
1050 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1052 return SYMBOL_TYPE (sym
);
1056 ALL_PSYMTABS (objfile
, ps
)
1058 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, 1, STRUCT_NAMESPACE
))
1060 s
= PSYMTAB_TO_SYMTAB (ps
);
1061 bv
= BLOCKVECTOR (s
);
1062 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1063 sym
= lookup_block_symbol (block
, name
, STRUCT_NAMESPACE
);
1066 /* This shouldn't be necessary, but as a last resort
1067 * try looking in the statics even though the psymtab
1068 * claimed the symbol was global. It's possible that
1069 * the psymtab gets it wrong in some cases.
1071 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1072 sym
= lookup_block_symbol (block
, name
, STRUCT_NAMESPACE
);
1074 error ("Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\
1075 %s may be an inlined function, or may be a template function\n\
1076 (if a template, try specifying an instantiation: %s<type>).",
1077 name
, ps
->filename
, name
, name
);
1079 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1080 return SYMBOL_TYPE (sym
);
1084 /* Now search the static file-level symbols.
1085 Not strictly correct, but more useful than an error.
1086 Do the symtab's first, then
1087 check the psymtab's. If a psymtab indicates the existence
1088 of the desired name as a file-level static, then do psymtab-to-symtab
1089 conversion on the fly and return the found symbol.
1092 ALL_SYMTABS (objfile
, s
)
1094 bv
= BLOCKVECTOR (s
);
1095 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1096 sym
= lookup_block_symbol (block
, name
, STRUCT_NAMESPACE
);
1097 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1099 return SYMBOL_TYPE (sym
);
1103 ALL_PSYMTABS (objfile
, ps
)
1105 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, 0, STRUCT_NAMESPACE
))
1107 s
= PSYMTAB_TO_SYMTAB (ps
);
1108 bv
= BLOCKVECTOR (s
);
1109 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1110 sym
= lookup_block_symbol (block
, name
, STRUCT_NAMESPACE
);
1113 /* This shouldn't be necessary, but as a last resort
1114 * try looking in the globals even though the psymtab
1115 * claimed the symbol was static. It's possible that
1116 * the psymtab gets it wrong in some cases.
1118 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1119 sym
= lookup_block_symbol (block
, name
, STRUCT_NAMESPACE
);
1121 error ("Internal: static symbol `%s' found in %s psymtab but not in symtab.\n\
1122 %s may be an inlined function, or may be a template function\n\
1123 (if a template, try specifying an instantiation: %s<type>).",
1124 name
, ps
->filename
, name
, name
);
1126 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1127 return SYMBOL_TYPE (sym
);
1130 return (struct type
*) 0;
1134 /* Find the psymtab containing main(). */
1135 /* FIXME: What about languages without main() or specially linked
1136 executables that have no main() ? */
1138 struct partial_symtab
*
1139 find_main_psymtab (void)
1141 register struct partial_symtab
*pst
;
1142 register struct objfile
*objfile
;
1144 ALL_PSYMTABS (objfile
, pst
)
1146 if (lookup_partial_symbol (pst
, "main", 1, VAR_NAMESPACE
))
1154 /* Search BLOCK for symbol NAME in NAMESPACE.
1156 Note that if NAME is the demangled form of a C++ symbol, we will fail
1157 to find a match during the binary search of the non-encoded names, but
1158 for now we don't worry about the slight inefficiency of looking for
1159 a match we'll never find, since it will go pretty quick. Once the
1160 binary search terminates, we drop through and do a straight linear
1161 search on the symbols. Each symbol which is marked as being a C++
1162 symbol (language_cplus set) has both the encoded and non-encoded names
1163 tested for a match. */
1166 lookup_block_symbol (register const struct block
*block
, const char *name
,
1167 const namespace_enum
namespace)
1169 register int bot
, top
, inc
;
1170 register struct symbol
*sym
;
1171 register struct symbol
*sym_found
= NULL
;
1172 register int do_linear_search
= 1;
1174 /* If the blocks's symbols were sorted, start with a binary search. */
1176 if (BLOCK_SHOULD_SORT (block
))
1178 /* Reset the linear search flag so if the binary search fails, we
1179 won't do the linear search once unless we find some reason to
1180 do so, such as finding a C++ symbol during the binary search.
1181 Note that for C++ modules, ALL the symbols in a block should
1182 end up marked as C++ symbols. */
1184 do_linear_search
= 0;
1185 top
= BLOCK_NSYMS (block
);
1188 /* Advance BOT to not far before the first symbol whose name is NAME. */
1192 inc
= (top
- bot
+ 1);
1193 /* No need to keep binary searching for the last few bits worth. */
1198 inc
= (inc
>> 1) + bot
;
1199 sym
= BLOCK_SYM (block
, inc
);
1200 if (!do_linear_search
1201 && (SYMBOL_LANGUAGE (sym
) == language_cplus
1202 || SYMBOL_LANGUAGE (sym
) == language_java
1205 do_linear_search
= 1;
1207 if (SYMBOL_NAME (sym
)[0] < name
[0])
1211 else if (SYMBOL_NAME (sym
)[0] > name
[0])
1215 else if (STRCMP (SYMBOL_NAME (sym
), name
) < 0)
1225 /* Now scan forward until we run out of symbols, find one whose
1226 name is greater than NAME, or find one we want. If there is
1227 more than one symbol with the right name and namespace, we
1228 return the first one; I believe it is now impossible for us
1229 to encounter two symbols with the same name and namespace
1230 here, because blocks containing argument symbols are no
1233 top
= BLOCK_NSYMS (block
);
1236 sym
= BLOCK_SYM (block
, bot
);
1237 inc
= SYMBOL_NAME (sym
)[0] - name
[0];
1240 inc
= STRCMP (SYMBOL_NAME (sym
), name
);
1242 if (inc
== 0 && SYMBOL_NAMESPACE (sym
) == namespace)
1254 /* Here if block isn't sorted, or we fail to find a match during the
1255 binary search above. If during the binary search above, we find a
1256 symbol which is a C++ symbol, then we have re-enabled the linear
1257 search flag which was reset when starting the binary search.
1259 This loop is equivalent to the loop above, but hacked greatly for speed.
1261 Note that parameter symbols do not always show up last in the
1262 list; this loop makes sure to take anything else other than
1263 parameter symbols first; it only uses parameter symbols as a
1264 last resort. Note that this only takes up extra computation
1267 if (do_linear_search
)
1269 top
= BLOCK_NSYMS (block
);
1273 sym
= BLOCK_SYM (block
, bot
);
1274 if (SYMBOL_NAMESPACE (sym
) == namespace &&
1275 SYMBOL_MATCHES_NAME (sym
, name
))
1277 /* If SYM has aliases, then use any alias that is active
1278 at the current PC. If no alias is active at the current
1279 PC, then use the main symbol.
1281 ?!? Is checking the current pc correct? Is this routine
1282 ever called to look up a symbol from another context?
1284 FIXME: No, it's not correct. If someone sets a
1285 conditional breakpoint at an address, then the
1286 breakpoint's `struct expression' should refer to the
1287 `struct symbol' appropriate for the breakpoint's
1288 address, which may not be the PC.
1290 Even if it were never called from another context,
1291 it's totally bizarre for lookup_symbol's behavior to
1292 depend on the value of the inferior's current PC. We
1293 should pass in the appropriate PC as well as the
1294 block. The interface to lookup_symbol should change
1295 to require the caller to provide a PC. */
1297 if (SYMBOL_ALIASES (sym
))
1298 sym
= find_active_alias (sym
, read_pc ());
1301 if (SYMBOL_CLASS (sym
) != LOC_ARG
&&
1302 SYMBOL_CLASS (sym
) != LOC_LOCAL_ARG
&&
1303 SYMBOL_CLASS (sym
) != LOC_REF_ARG
&&
1304 SYMBOL_CLASS (sym
) != LOC_REGPARM
&&
1305 SYMBOL_CLASS (sym
) != LOC_REGPARM_ADDR
&&
1306 SYMBOL_CLASS (sym
) != LOC_BASEREG_ARG
)
1314 return (sym_found
); /* Will be NULL if not found. */
1317 /* Given a main symbol SYM and ADDR, search through the alias
1318 list to determine if an alias is active at ADDR and return
1321 If no alias is active, then return SYM. */
1323 static struct symbol
*
1324 find_active_alias (struct symbol
*sym
, CORE_ADDR addr
)
1326 struct range_list
*r
;
1327 struct alias_list
*aliases
;
1329 /* If we have aliases, check them first. */
1330 aliases
= SYMBOL_ALIASES (sym
);
1334 if (!SYMBOL_RANGES (aliases
->sym
))
1335 return aliases
->sym
;
1336 for (r
= SYMBOL_RANGES (aliases
->sym
); r
; r
= r
->next
)
1338 if (r
->start
<= addr
&& r
->end
> addr
)
1339 return aliases
->sym
;
1341 aliases
= aliases
->next
;
1344 /* Nothing found, return the main symbol. */
1349 /* Return the symbol for the function which contains a specified
1350 lexical block, described by a struct block BL. */
1353 block_function (struct block
*bl
)
1355 while (BLOCK_FUNCTION (bl
) == 0 && BLOCK_SUPERBLOCK (bl
) != 0)
1356 bl
= BLOCK_SUPERBLOCK (bl
);
1358 return BLOCK_FUNCTION (bl
);
1361 /* Find the symtab associated with PC and SECTION. Look through the
1362 psymtabs and read in another symtab if necessary. */
1365 find_pc_sect_symtab (CORE_ADDR pc
, asection
*section
)
1367 register struct block
*b
;
1368 struct blockvector
*bv
;
1369 register struct symtab
*s
= NULL
;
1370 register struct symtab
*best_s
= NULL
;
1371 register struct partial_symtab
*ps
;
1372 register struct objfile
*objfile
;
1373 CORE_ADDR distance
= 0;
1375 /* Search all symtabs for the one whose file contains our address, and which
1376 is the smallest of all the ones containing the address. This is designed
1377 to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000
1378 and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from
1379 0x1000-0x4000, but for address 0x2345 we want to return symtab b.
1381 This happens for native ecoff format, where code from included files
1382 gets its own symtab. The symtab for the included file should have
1383 been read in already via the dependency mechanism.
1384 It might be swifter to create several symtabs with the same name
1385 like xcoff does (I'm not sure).
1387 It also happens for objfiles that have their functions reordered.
1388 For these, the symtab we are looking for is not necessarily read in. */
1390 ALL_SYMTABS (objfile
, s
)
1392 bv
= BLOCKVECTOR (s
);
1393 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1395 if (BLOCK_START (b
) <= pc
1396 && BLOCK_END (b
) > pc
1398 || BLOCK_END (b
) - BLOCK_START (b
) < distance
))
1400 /* For an objfile that has its functions reordered,
1401 find_pc_psymtab will find the proper partial symbol table
1402 and we simply return its corresponding symtab. */
1403 /* In order to better support objfiles that contain both
1404 stabs and coff debugging info, we continue on if a psymtab
1406 if ((objfile
->flags
& OBJF_REORDERED
) && objfile
->psymtabs
)
1408 ps
= find_pc_sect_psymtab (pc
, section
);
1410 return PSYMTAB_TO_SYMTAB (ps
);
1416 for (i
= 0; i
< b
->nsyms
; i
++)
1418 fixup_symbol_section (b
->sym
[i
], objfile
);
1419 if (section
== SYMBOL_BFD_SECTION (b
->sym
[i
]))
1423 continue; /* no symbol in this symtab matches section */
1425 distance
= BLOCK_END (b
) - BLOCK_START (b
);
1434 ps
= find_pc_sect_psymtab (pc
, section
);
1438 /* Might want to error() here (in case symtab is corrupt and
1439 will cause a core dump), but maybe we can successfully
1440 continue, so let's not. */
1442 (Internal error: pc 0x%s in read in psymtab, but not in symtab.)\n",
1444 s
= PSYMTAB_TO_SYMTAB (ps
);
1449 /* Find the symtab associated with PC. Look through the psymtabs and
1450 read in another symtab if necessary. Backward compatibility, no section */
1453 find_pc_symtab (CORE_ADDR pc
)
1455 return find_pc_sect_symtab (pc
, find_pc_mapped_section (pc
));
1461 /* Find the closest symbol value (of any sort -- function or variable)
1462 for a given address value. Slow but complete. (currently unused,
1463 mainly because it is too slow. We could fix it if each symtab and
1464 psymtab had contained in it the addresses ranges of each of its
1465 sections, which also would be required to make things like "info
1466 line *0x2345" cause psymtabs to be converted to symtabs). */
1469 find_addr_symbol (CORE_ADDR addr
, struct symtab
**symtabp
, CORE_ADDR
*symaddrp
)
1471 struct symtab
*symtab
, *best_symtab
;
1472 struct objfile
*objfile
;
1473 register int bot
, top
;
1474 register struct symbol
*sym
;
1475 register CORE_ADDR sym_addr
;
1476 struct block
*block
;
1479 /* Info on best symbol seen so far */
1481 register CORE_ADDR best_sym_addr
= 0;
1482 struct symbol
*best_sym
= 0;
1484 /* FIXME -- we should pull in all the psymtabs, too! */
1485 ALL_SYMTABS (objfile
, symtab
)
1487 /* Search the global and static blocks in this symtab for
1488 the closest symbol-address to the desired address. */
1490 for (blocknum
= GLOBAL_BLOCK
; blocknum
<= STATIC_BLOCK
; blocknum
++)
1493 block
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (symtab
), blocknum
);
1494 top
= BLOCK_NSYMS (block
);
1495 for (bot
= 0; bot
< top
; bot
++)
1497 sym
= BLOCK_SYM (block
, bot
);
1498 switch (SYMBOL_CLASS (sym
))
1502 sym_addr
= SYMBOL_VALUE_ADDRESS (sym
);
1506 sym_addr
= SYMBOL_VALUE_ADDRESS (sym
);
1507 /* An indirect symbol really lives at *sym_addr,
1508 * so an indirection needs to be done.
1509 * However, I am leaving this commented out because it's
1510 * expensive, and it's possible that symbolization
1511 * could be done without an active process (in
1512 * case this read_memory will fail). RT
1513 sym_addr = read_memory_unsigned_integer
1514 (sym_addr, TARGET_PTR_BIT / TARGET_CHAR_BIT);
1519 sym_addr
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
1526 if (sym_addr
<= addr
)
1527 if (sym_addr
> best_sym_addr
)
1529 /* Quit if we found an exact match. */
1531 best_sym_addr
= sym_addr
;
1532 best_symtab
= symtab
;
1533 if (sym_addr
== addr
)
1542 *symtabp
= best_symtab
;
1544 *symaddrp
= best_sym_addr
;
1549 /* Find the source file and line number for a given PC value and section.
1550 Return a structure containing a symtab pointer, a line number,
1551 and a pc range for the entire source line.
1552 The value's .pc field is NOT the specified pc.
1553 NOTCURRENT nonzero means, if specified pc is on a line boundary,
1554 use the line that ends there. Otherwise, in that case, the line
1555 that begins there is used. */
1557 /* The big complication here is that a line may start in one file, and end just
1558 before the start of another file. This usually occurs when you #include
1559 code in the middle of a subroutine. To properly find the end of a line's PC
1560 range, we must search all symtabs associated with this compilation unit, and
1561 find the one whose first PC is closer than that of the next line in this
1564 /* If it's worth the effort, we could be using a binary search. */
1566 struct symtab_and_line
1567 find_pc_sect_line (CORE_ADDR pc
, struct sec
*section
, int notcurrent
)
1570 register struct linetable
*l
;
1573 register struct linetable_entry
*item
;
1574 struct symtab_and_line val
;
1575 struct blockvector
*bv
;
1576 struct minimal_symbol
*msymbol
;
1577 struct minimal_symbol
*mfunsym
;
1579 /* Info on best line seen so far, and where it starts, and its file. */
1581 struct linetable_entry
*best
= NULL
;
1582 CORE_ADDR best_end
= 0;
1583 struct symtab
*best_symtab
= 0;
1585 /* Store here the first line number
1586 of a file which contains the line at the smallest pc after PC.
1587 If we don't find a line whose range contains PC,
1588 we will use a line one less than this,
1589 with a range from the start of that file to the first line's pc. */
1590 struct linetable_entry
*alt
= NULL
;
1591 struct symtab
*alt_symtab
= 0;
1593 /* Info on best line seen in this file. */
1595 struct linetable_entry
*prev
;
1597 /* If this pc is not from the current frame,
1598 it is the address of the end of a call instruction.
1599 Quite likely that is the start of the following statement.
1600 But what we want is the statement containing the instruction.
1601 Fudge the pc to make sure we get that. */
1603 INIT_SAL (&val
); /* initialize to zeroes */
1608 /* elz: added this because this function returned the wrong
1609 information if the pc belongs to a stub (import/export)
1610 to call a shlib function. This stub would be anywhere between
1611 two functions in the target, and the line info was erroneously
1612 taken to be the one of the line before the pc.
1614 /* RT: Further explanation:
1616 * We have stubs (trampolines) inserted between procedures.
1618 * Example: "shr1" exists in a shared library, and a "shr1" stub also
1619 * exists in the main image.
1621 * In the minimal symbol table, we have a bunch of symbols
1622 * sorted by start address. The stubs are marked as "trampoline",
1623 * the others appear as text. E.g.:
1625 * Minimal symbol table for main image
1626 * main: code for main (text symbol)
1627 * shr1: stub (trampoline symbol)
1628 * foo: code for foo (text symbol)
1630 * Minimal symbol table for "shr1" image:
1632 * shr1: code for shr1 (text symbol)
1635 * So the code below is trying to detect if we are in the stub
1636 * ("shr1" stub), and if so, find the real code ("shr1" trampoline),
1637 * and if found, do the symbolization from the real-code address
1638 * rather than the stub address.
1640 * Assumptions being made about the minimal symbol table:
1641 * 1. lookup_minimal_symbol_by_pc() will return a trampoline only
1642 * if we're really in the trampoline. If we're beyond it (say
1643 * we're in "foo" in the above example), it'll have a closer
1644 * symbol (the "foo" text symbol for example) and will not
1645 * return the trampoline.
1646 * 2. lookup_minimal_symbol_text() will find a real text symbol
1647 * corresponding to the trampoline, and whose address will
1648 * be different than the trampoline address. I put in a sanity
1649 * check for the address being the same, to avoid an
1650 * infinite recursion.
1652 msymbol
= lookup_minimal_symbol_by_pc (pc
);
1653 if (msymbol
!= NULL
)
1654 if (MSYMBOL_TYPE (msymbol
) == mst_solib_trampoline
)
1656 mfunsym
= lookup_minimal_symbol_text (SYMBOL_NAME (msymbol
), NULL
, NULL
);
1657 if (mfunsym
== NULL
)
1658 /* I eliminated this warning since it is coming out
1659 * in the following situation:
1660 * gdb shmain // test program with shared libraries
1661 * (gdb) break shr1 // function in shared lib
1662 * Warning: In stub for ...
1663 * In the above situation, the shared lib is not loaded yet,
1664 * so of course we can't find the real func/line info,
1665 * but the "break" still works, and the warning is annoying.
1666 * So I commented out the warning. RT */
1667 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_NAME(msymbol)) */ ;
1669 else if (SYMBOL_VALUE (mfunsym
) == SYMBOL_VALUE (msymbol
))
1670 /* Avoid infinite recursion */
1671 /* See above comment about why warning is commented out */
1672 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_NAME(msymbol)) */ ;
1675 return find_pc_line (SYMBOL_VALUE (mfunsym
), 0);
1679 s
= find_pc_sect_symtab (pc
, section
);
1682 /* if no symbol information, return previous pc */
1689 bv
= BLOCKVECTOR (s
);
1691 /* Look at all the symtabs that share this blockvector.
1692 They all have the same apriori range, that we found was right;
1693 but they have different line tables. */
1695 for (; s
&& BLOCKVECTOR (s
) == bv
; s
= s
->next
)
1697 /* Find the best line in this symtab. */
1704 /* I think len can be zero if the symtab lacks line numbers
1705 (e.g. gcc -g1). (Either that or the LINETABLE is NULL;
1706 I'm not sure which, and maybe it depends on the symbol
1712 item
= l
->item
; /* Get first line info */
1714 /* Is this file's first line closer than the first lines of other files?
1715 If so, record this file, and its first line, as best alternate. */
1716 if (item
->pc
> pc
&& (!alt
|| item
->pc
< alt
->pc
))
1722 for (i
= 0; i
< len
; i
++, item
++)
1724 /* Leave prev pointing to the linetable entry for the last line
1725 that started at or before PC. */
1732 /* At this point, prev points at the line whose start addr is <= pc, and
1733 item points at the next line. If we ran off the end of the linetable
1734 (pc >= start of the last line), then prev == item. If pc < start of
1735 the first line, prev will not be set. */
1737 /* Is this file's best line closer than the best in the other files?
1738 If so, record this file, and its best line, as best so far. */
1740 if (prev
&& (!best
|| prev
->pc
> best
->pc
))
1744 /* If another line is in the linetable, and its PC is closer
1745 than the best_end we currently have, take it as best_end. */
1746 if (i
< len
&& (best_end
== 0 || best_end
> item
->pc
))
1747 best_end
= item
->pc
;
1754 { /* If we didn't find any line # info, just
1760 val
.symtab
= alt_symtab
;
1761 val
.line
= alt
->line
- 1;
1763 /* Don't return line 0, that means that we didn't find the line. */
1767 val
.pc
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
1773 val
.symtab
= best_symtab
;
1774 val
.line
= best
->line
;
1776 if (best_end
&& (!alt
|| best_end
< alt
->pc
))
1781 val
.end
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
1783 val
.section
= section
;
1787 /* Backward compatibility (no section) */
1789 struct symtab_and_line
1790 find_pc_line (CORE_ADDR pc
, int notcurrent
)
1794 section
= find_pc_overlay (pc
);
1795 if (pc_in_unmapped_range (pc
, section
))
1796 pc
= overlay_mapped_address (pc
, section
);
1797 return find_pc_sect_line (pc
, section
, notcurrent
);
1801 static struct symtab
*find_line_symtab (struct symtab
*, int, int *, int *);
1803 /* Find line number LINE in any symtab whose name is the same as
1806 If found, return the symtab that contains the linetable in which it was
1807 found, set *INDEX to the index in the linetable of the best entry
1808 found, and set *EXACT_MATCH nonzero if the value returned is an
1811 If not found, return NULL. */
1813 static struct symtab
*
1814 find_line_symtab (struct symtab
*symtab
, int line
, int *index
, int *exact_match
)
1818 /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE
1822 struct linetable
*best_linetable
;
1823 struct symtab
*best_symtab
;
1825 /* First try looking it up in the given symtab. */
1826 best_linetable
= LINETABLE (symtab
);
1827 best_symtab
= symtab
;
1828 best_index
= find_line_common (best_linetable
, line
, &exact
);
1829 if (best_index
< 0 || !exact
)
1831 /* Didn't find an exact match. So we better keep looking for
1832 another symtab with the same name. In the case of xcoff,
1833 multiple csects for one source file (produced by IBM's FORTRAN
1834 compiler) produce multiple symtabs (this is unavoidable
1835 assuming csects can be at arbitrary places in memory and that
1836 the GLOBAL_BLOCK of a symtab has a begin and end address). */
1838 /* BEST is the smallest linenumber > LINE so far seen,
1839 or 0 if none has been seen so far.
1840 BEST_INDEX and BEST_LINETABLE identify the item for it. */
1843 struct objfile
*objfile
;
1846 if (best_index
>= 0)
1847 best
= best_linetable
->item
[best_index
].line
;
1851 ALL_SYMTABS (objfile
, s
)
1853 struct linetable
*l
;
1856 if (!STREQ (symtab
->filename
, s
->filename
))
1859 ind
= find_line_common (l
, line
, &exact
);
1869 if (best
== 0 || l
->item
[ind
].line
< best
)
1871 best
= l
->item
[ind
].line
;
1884 *index
= best_index
;
1886 *exact_match
= exact
;
1891 /* Set the PC value for a given source file and line number and return true.
1892 Returns zero for invalid line number (and sets the PC to 0).
1893 The source file is specified with a struct symtab. */
1896 find_line_pc (struct symtab
*symtab
, int line
, CORE_ADDR
*pc
)
1898 struct linetable
*l
;
1905 symtab
= find_line_symtab (symtab
, line
, &ind
, NULL
);
1908 l
= LINETABLE (symtab
);
1909 *pc
= l
->item
[ind
].pc
;
1916 /* Find the range of pc values in a line.
1917 Store the starting pc of the line into *STARTPTR
1918 and the ending pc (start of next line) into *ENDPTR.
1919 Returns 1 to indicate success.
1920 Returns 0 if could not find the specified line. */
1923 find_line_pc_range (struct symtab_and_line sal
, CORE_ADDR
*startptr
,
1926 CORE_ADDR startaddr
;
1927 struct symtab_and_line found_sal
;
1930 if (startaddr
== 0 && !find_line_pc (sal
.symtab
, sal
.line
, &startaddr
))
1933 /* This whole function is based on address. For example, if line 10 has
1934 two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then
1935 "info line *0x123" should say the line goes from 0x100 to 0x200
1936 and "info line *0x355" should say the line goes from 0x300 to 0x400.
1937 This also insures that we never give a range like "starts at 0x134
1938 and ends at 0x12c". */
1940 found_sal
= find_pc_sect_line (startaddr
, sal
.section
, 0);
1941 if (found_sal
.line
!= sal
.line
)
1943 /* The specified line (sal) has zero bytes. */
1944 *startptr
= found_sal
.pc
;
1945 *endptr
= found_sal
.pc
;
1949 *startptr
= found_sal
.pc
;
1950 *endptr
= found_sal
.end
;
1955 /* Given a line table and a line number, return the index into the line
1956 table for the pc of the nearest line whose number is >= the specified one.
1957 Return -1 if none is found. The value is >= 0 if it is an index.
1959 Set *EXACT_MATCH nonzero if the value returned is an exact match. */
1962 find_line_common (register struct linetable
*l
, register int lineno
,
1968 /* BEST is the smallest linenumber > LINENO so far seen,
1969 or 0 if none has been seen so far.
1970 BEST_INDEX identifies the item for it. */
1972 int best_index
= -1;
1981 for (i
= 0; i
< len
; i
++)
1983 register struct linetable_entry
*item
= &(l
->item
[i
]);
1985 if (item
->line
== lineno
)
1987 /* Return the first (lowest address) entry which matches. */
1992 if (item
->line
> lineno
&& (best
== 0 || item
->line
< best
))
1999 /* If we got here, we didn't get an exact match. */
2006 find_pc_line_pc_range (CORE_ADDR pc
, CORE_ADDR
*startptr
, CORE_ADDR
*endptr
)
2008 struct symtab_and_line sal
;
2009 sal
= find_pc_line (pc
, 0);
2012 return sal
.symtab
!= 0;
2015 /* Given a function symbol SYM, find the symtab and line for the start
2017 If the argument FUNFIRSTLINE is nonzero, we want the first line
2018 of real code inside the function. */
2020 static struct symtab_and_line
2021 find_function_start_sal (struct symbol
*sym
, int);
2023 static struct symtab_and_line
2024 find_function_start_sal (struct symbol
*sym
, int funfirstline
)
2027 struct symtab_and_line sal
;
2029 pc
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
2030 fixup_symbol_section (sym
, NULL
);
2032 { /* skip "first line" of function (which is actually its prologue) */
2033 asection
*section
= SYMBOL_BFD_SECTION (sym
);
2034 /* If function is in an unmapped overlay, use its unmapped LMA
2035 address, so that SKIP_PROLOGUE has something unique to work on */
2036 if (section_is_overlay (section
) &&
2037 !section_is_mapped (section
))
2038 pc
= overlay_unmapped_address (pc
, section
);
2040 pc
+= FUNCTION_START_OFFSET
;
2041 pc
= SKIP_PROLOGUE (pc
);
2043 /* For overlays, map pc back into its mapped VMA range */
2044 pc
= overlay_mapped_address (pc
, section
);
2046 sal
= find_pc_sect_line (pc
, SYMBOL_BFD_SECTION (sym
), 0);
2048 #ifdef PROLOGUE_FIRSTLINE_OVERLAP
2049 /* Convex: no need to suppress code on first line, if any */
2052 /* Check if SKIP_PROLOGUE left us in mid-line, and the next
2053 line is still part of the same function. */
2055 && BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)) <= sal
.end
2056 && sal
.end
< BLOCK_END (SYMBOL_BLOCK_VALUE (sym
)))
2058 /* First pc of next line */
2060 /* Recalculate the line number (might not be N+1). */
2061 sal
= find_pc_sect_line (pc
, SYMBOL_BFD_SECTION (sym
), 0);
2069 /* If P is of the form "operator[ \t]+..." where `...' is
2070 some legitimate operator text, return a pointer to the
2071 beginning of the substring of the operator text.
2072 Otherwise, return "". */
2074 operator_chars (char *p
, char **end
)
2077 if (strncmp (p
, "operator", 8))
2081 /* Don't get faked out by `operator' being part of a longer
2083 if (isalpha (*p
) || *p
== '_' || *p
== '$' || *p
== '\0')
2086 /* Allow some whitespace between `operator' and the operator symbol. */
2087 while (*p
== ' ' || *p
== '\t')
2090 /* Recognize 'operator TYPENAME'. */
2092 if (isalpha (*p
) || *p
== '_' || *p
== '$')
2094 register char *q
= p
+ 1;
2095 while (isalnum (*q
) || *q
== '_' || *q
== '$')
2120 if (p
[1] == '=' || p
[1] == p
[0])
2131 error ("`operator ()' must be specified without whitespace in `()'");
2136 error ("`operator ?:' must be specified without whitespace in `?:'");
2141 error ("`operator []' must be specified without whitespace in `[]'");
2145 error ("`operator %s' not supported", p
);
2152 /* Return the number of methods described for TYPE, including the
2153 methods from types it derives from. This can't be done in the symbol
2154 reader because the type of the baseclass might still be stubbed
2155 when the definition of the derived class is parsed. */
2157 static int total_number_of_methods (struct type
*type
);
2160 total_number_of_methods (struct type
*type
)
2165 CHECK_TYPEDEF (type
);
2166 if (TYPE_CPLUS_SPECIFIC (type
) == NULL
)
2168 count
= TYPE_NFN_FIELDS_TOTAL (type
);
2170 for (n
= 0; n
< TYPE_N_BASECLASSES (type
); n
++)
2171 count
+= total_number_of_methods (TYPE_BASECLASS (type
, n
));
2176 /* Recursive helper function for decode_line_1.
2177 Look for methods named NAME in type T.
2178 Return number of matches.
2179 Put matches in SYM_ARR, which should have been allocated with
2180 a size of total_number_of_methods (T) * sizeof (struct symbol *).
2181 Note that this function is g++ specific. */
2184 find_methods (struct type
*t
, char *name
, struct symbol
**sym_arr
)
2188 struct symbol
*sym_class
;
2189 char *class_name
= type_name_no_tag (t
);
2191 /* Ignore this class if it doesn't have a name. This is ugly, but
2192 unless we figure out how to get the physname without the name of
2193 the class, then the loop can't do any good. */
2195 && (sym_class
= lookup_symbol (class_name
,
2196 (struct block
*) NULL
,
2199 (struct symtab
**) NULL
)))
2203 /* FIXME: Shouldn't this just be CHECK_TYPEDEF (t)? */
2204 t
= SYMBOL_TYPE (sym_class
);
2206 /* Loop over each method name. At this level, all overloads of a name
2207 are counted as a single name. There is an inner loop which loops over
2210 for (method_counter
= TYPE_NFN_FIELDS (t
) - 1;
2211 method_counter
>= 0;
2215 char *method_name
= TYPE_FN_FIELDLIST_NAME (t
, method_counter
);
2216 char dem_opname
[64];
2218 if (strncmp (method_name
, "__", 2) == 0 ||
2219 strncmp (method_name
, "op", 2) == 0 ||
2220 strncmp (method_name
, "type", 4) == 0)
2222 if (cplus_demangle_opname (method_name
, dem_opname
, DMGL_ANSI
))
2223 method_name
= dem_opname
;
2224 else if (cplus_demangle_opname (method_name
, dem_opname
, 0))
2225 method_name
= dem_opname
;
2228 if (STREQ (name
, method_name
))
2229 /* Find all the overloaded methods with that name. */
2230 for (field_counter
= TYPE_FN_FIELDLIST_LENGTH (t
, method_counter
) - 1;
2237 f
= TYPE_FN_FIELDLIST1 (t
, method_counter
);
2239 if (TYPE_FN_FIELD_STUB (f
, field_counter
))
2243 tmp_name
= gdb_mangle_name (t
,
2246 phys_name
= alloca (strlen (tmp_name
) + 1);
2247 strcpy (phys_name
, tmp_name
);
2251 phys_name
= TYPE_FN_FIELD_PHYSNAME (f
, field_counter
);
2253 /* Destructor is handled by caller, dont add it to the list */
2254 if (DESTRUCTOR_PREFIX_P (phys_name
))
2257 sym_arr
[i1
] = lookup_symbol (phys_name
,
2258 NULL
, VAR_NAMESPACE
,
2260 (struct symtab
**) NULL
);
2265 /* This error message gets printed, but the method
2266 still seems to be found
2267 fputs_filtered("(Cannot find method ", gdb_stdout);
2268 fprintf_symbol_filtered (gdb_stdout, phys_name,
2270 DMGL_PARAMS | DMGL_ANSI);
2271 fputs_filtered(" - possibly inlined.)\n", gdb_stdout);
2278 /* Only search baseclasses if there is no match yet, since names in
2279 derived classes override those in baseclasses.
2281 FIXME: The above is not true; it is only true of member functions
2282 if they have the same number of arguments (??? - section 13.1 of the
2283 ARM says the function members are not in the same scope but doesn't
2284 really spell out the rules in a way I understand. In any case, if
2285 the number of arguments differ this is a case in which we can overload
2286 rather than hiding without any problem, and gcc 2.4.5 does overload
2287 rather than hiding in this case). */
2290 for (ibase
= 0; ibase
< TYPE_N_BASECLASSES (t
); ibase
++)
2291 i1
+= find_methods (TYPE_BASECLASS (t
, ibase
), name
, sym_arr
+ i1
);
2296 /* Helper function for decode_line_1.
2297 Build a canonical line spec in CANONICAL if it is non-NULL and if
2298 the SAL has a symtab.
2299 If SYMNAME is non-NULL the canonical line spec is `filename:symname'.
2300 If SYMNAME is NULL the line number from SAL is used and the canonical
2301 line spec is `filename:linenum'. */
2304 build_canonical_line_spec (struct symtab_and_line
*sal
, char *symname
,
2307 char **canonical_arr
;
2308 char *canonical_name
;
2310 struct symtab
*s
= sal
->symtab
;
2312 if (s
== (struct symtab
*) NULL
2313 || s
->filename
== (char *) NULL
2314 || canonical
== (char ***) NULL
)
2317 canonical_arr
= (char **) xmalloc (sizeof (char *));
2318 *canonical
= canonical_arr
;
2320 filename
= s
->filename
;
2321 if (symname
!= NULL
)
2323 canonical_name
= xmalloc (strlen (filename
) + strlen (symname
) + 2);
2324 sprintf (canonical_name
, "%s:%s", filename
, symname
);
2328 canonical_name
= xmalloc (strlen (filename
) + 30);
2329 sprintf (canonical_name
, "%s:%d", filename
, sal
->line
);
2331 canonical_arr
[0] = canonical_name
;
2336 /* Find an instance of the character C in the string S that is outside
2337 of all parenthesis pairs, single-quoted strings, and double-quoted
2340 find_toplevel_char (char *s
, char c
)
2342 int quoted
= 0; /* zero if we're not in quotes;
2343 '"' if we're in a double-quoted string;
2344 '\'' if we're in a single-quoted string. */
2345 int depth
= 0; /* number of unclosed parens we've seen */
2348 for (scan
= s
; *scan
; scan
++)
2352 if (*scan
== quoted
)
2354 else if (*scan
== '\\' && *(scan
+ 1))
2357 else if (*scan
== c
&& ! quoted
&& depth
== 0)
2359 else if (*scan
== '"' || *scan
== '\'')
2361 else if (*scan
== '(')
2363 else if (*scan
== ')' && depth
> 0)
2371 /* Parse a string that specifies a line number.
2372 Pass the address of a char * variable; that variable will be
2373 advanced over the characters actually parsed.
2377 LINENUM -- that line number in current file. PC returned is 0.
2378 FILE:LINENUM -- that line in that file. PC returned is 0.
2379 FUNCTION -- line number of openbrace of that function.
2380 PC returned is the start of the function.
2381 VARIABLE -- line number of definition of that variable.
2383 FILE:FUNCTION -- likewise, but prefer functions in that file.
2384 *EXPR -- line in which address EXPR appears.
2386 This may all be followed by an "if EXPR", which we ignore.
2388 FUNCTION may be an undebuggable function found in minimal symbol table.
2390 If the argument FUNFIRSTLINE is nonzero, we want the first line
2391 of real code inside a function when a function is specified, and it is
2392 not OK to specify a variable or type to get its line number.
2394 DEFAULT_SYMTAB specifies the file to use if none is specified.
2395 It defaults to current_source_symtab.
2396 DEFAULT_LINE specifies the line number to use for relative
2397 line numbers (that start with signs). Defaults to current_source_line.
2398 If CANONICAL is non-NULL, store an array of strings containing the canonical
2399 line specs there if necessary. Currently overloaded member functions and
2400 line numbers or static functions without a filename yield a canonical
2401 line spec. The array and the line spec strings are allocated on the heap,
2402 it is the callers responsibility to free them.
2404 Note that it is possible to return zero for the symtab
2405 if no file is validly specified. Callers must check that.
2406 Also, the line number returned may be invalid. */
2408 /* We allow single quotes in various places. This is a hideous
2409 kludge, which exists because the completer can't yet deal with the
2410 lack of single quotes. FIXME: write a linespec_completer which we
2411 can use as appropriate instead of make_symbol_completion_list. */
2413 struct symtabs_and_lines
2414 decode_line_1 (char **argptr
, int funfirstline
, struct symtab
*default_symtab
,
2415 int default_line
, char ***canonical
)
2417 struct symtabs_and_lines values
;
2418 #ifdef HPPA_COMPILER_BUG
2419 /* FIXME: The native HP 9000/700 compiler has a bug which appears
2420 when optimizing this file with target i960-vxworks. I haven't
2421 been able to construct a simple test case. The problem is that
2422 in the second call to SKIP_PROLOGUE below, the compiler somehow
2423 does not realize that the statement val = find_pc_line (...) will
2424 change the values of the fields of val. It extracts the elements
2425 into registers at the top of the block, and does not update the
2426 registers after the call to find_pc_line. You can check this by
2427 inserting a printf at the end of find_pc_line to show what values
2428 it is returning for val.pc and val.end and another printf after
2429 the call to see what values the function actually got (remember,
2430 this is compiling with cc -O, with this patch removed). You can
2431 also examine the assembly listing: search for the second call to
2432 skip_prologue; the LDO statement before the next call to
2433 find_pc_line loads the address of the structure which
2434 find_pc_line will return; if there is a LDW just before the LDO,
2435 which fetches an element of the structure, then the compiler
2438 Setting val to volatile avoids the problem. We must undef
2439 volatile, because the HPPA native compiler does not define
2440 __STDC__, although it does understand volatile, and so volatile
2441 will have been defined away in defs.h. */
2443 volatile struct symtab_and_line val
;
2444 #define volatile /*nothing */
2446 struct symtab_and_line val
;
2448 register char *p
, *p1
;
2449 char *q
, *pp
, *ii
, *p2
;
2453 register struct symtab
*s
;
2455 register struct symbol
*sym
;
2456 /* The symtab that SYM was found in. */
2457 struct symtab
*sym_symtab
;
2459 register CORE_ADDR pc
;
2460 register struct minimal_symbol
*msymbol
;
2462 struct symbol
*sym_class
;
2465 int is_quote_enclosed
;
2469 struct symbol
**sym_arr
;
2471 char *saved_arg
= *argptr
;
2472 extern char *gdb_completer_quote_characters
;
2474 INIT_SAL (&val
); /* initialize to zeroes */
2476 /* Defaults have defaults. */
2478 if (default_symtab
== 0)
2480 default_symtab
= current_source_symtab
;
2481 default_line
= current_source_line
;
2484 /* See if arg is *PC */
2486 if (**argptr
== '*')
2489 pc
= parse_and_eval_address_1 (argptr
);
2491 values
.sals
= (struct symtab_and_line
*)
2492 xmalloc (sizeof (struct symtab_and_line
));
2495 values
.sals
[0] = find_pc_line (pc
, 0);
2496 values
.sals
[0].pc
= pc
;
2497 values
.sals
[0].section
= find_pc_overlay (pc
);
2502 /* 'has_if' is for the syntax:
2503 * (gdb) break foo if (a==b)
2505 if ((ii
= strstr (*argptr
, " if ")) != NULL
||
2506 (ii
= strstr (*argptr
, "\tif ")) != NULL
||
2507 (ii
= strstr (*argptr
, " if\t")) != NULL
||
2508 (ii
= strstr (*argptr
, "\tif\t")) != NULL
||
2509 (ii
= strstr (*argptr
, " if(")) != NULL
||
2510 (ii
= strstr (*argptr
, "\tif( ")) != NULL
)
2512 /* Temporarily zap out "if (condition)" to not
2513 * confuse the parenthesis-checking code below.
2514 * This is undone below. Do not change ii!!
2521 /* Set various flags.
2522 * 'has_parens' is important for overload checking, where
2523 * we allow things like:
2524 * (gdb) break c::f(int)
2527 /* Maybe arg is FILE : LINENUM or FILE : FUNCTION */
2529 is_quoted
= (**argptr
2530 && strchr (gdb_completer_quote_characters
, **argptr
) != NULL
);
2532 has_parens
= ((pp
= strchr (*argptr
, '(')) != NULL
2533 && (pp
= strrchr (pp
, ')')) != NULL
);
2535 /* Now that we're safely past the has_parens check,
2536 * put back " if (condition)" so outer layers can see it
2541 /* Maybe we were called with a line range FILENAME:LINENUM,FILENAME:LINENUM
2542 and we must isolate the first half. Outer layers will call again later
2543 for the second half.
2545 Don't count commas that appear in argument lists of overloaded
2546 functions, or in quoted strings. It's stupid to go to this much
2547 trouble when the rest of the function is such an obvious roach hotel. */
2548 ii
= find_toplevel_char (*argptr
, ',');
2549 has_comma
= (ii
!= 0);
2551 /* Temporarily zap out second half to not
2552 * confuse the code below.
2553 * This is undone below. Do not change ii!!
2560 /* Maybe arg is FILE : LINENUM or FILE : FUNCTION */
2561 /* May also be CLASS::MEMBER, or NAMESPACE::NAME */
2562 /* Look for ':', but ignore inside of <> */
2568 is_quote_enclosed
= 1;
2572 is_quote_enclosed
= 0;
2577 char *temp_end
= find_template_name_end (p
);
2579 error ("malformed template specification in command");
2582 /* Check for the end of the first half of the linespec. End of line,
2583 a tab, a double colon or the last single colon, or a space. But
2584 if enclosed in double quotes we do not break on enclosed spaces */
2588 && ((p
[1] == ':') || (strchr (p
+ 1, ':') == NULL
)))
2589 || ((p
[0] == ' ') && !is_quote_enclosed
))
2591 if (p
[0] == '.' && strchr (p
, ':') == NULL
) /* Java qualified method. */
2593 /* Find the *last* '.', since the others are package qualifiers. */
2594 for (p1
= p
; *p1
; p1
++)
2602 while (p
[0] == ' ' || p
[0] == '\t')
2605 /* if the closing double quote was left at the end, remove it */
2606 if (is_quote_enclosed
)
2608 char *closing_quote
= strchr (p
, '"');
2609 if (closing_quote
&& closing_quote
[1] == '\0')
2610 *closing_quote
= '\0';
2613 /* Now that we've safely parsed the first half,
2614 * put back ',' so outer layers can see it
2619 if ((p
[0] == ':' || p
[0] == '.') && !has_parens
)
2624 *argptr
= *argptr
+ 1;
2625 if (p
[0] == '.' || p
[1] == ':')
2627 char *saved_arg2
= *argptr
;
2629 /* First check for "global" namespace specification,
2630 of the form "::foo". If found, skip over the colons
2631 and jump to normal symbol processing */
2632 if ((*argptr
== p
) || (p
[-1] == ' ') || (p
[-1] == '\t'))
2635 /* We have what looks like a class or namespace
2636 scope specification (A::B), possibly with many
2637 levels of namespaces or classes (A::B::C::D).
2639 Some versions of the HP ANSI C++ compiler (as also possibly
2640 other compilers) generate class/function/member names with
2641 embedded double-colons if they are inside namespaces. To
2642 handle this, we loop a few times, considering larger and
2643 larger prefixes of the string as though they were single
2644 symbols. So, if the initially supplied string is
2645 A::B::C::D::foo, we have to look up "A", then "A::B",
2646 then "A::B::C", then "A::B::C::D", and finally
2647 "A::B::C::D::foo" as single, monolithic symbols, because
2648 A, B, C or D may be namespaces.
2650 Note that namespaces can nest only inside other
2651 namespaces, and not inside classes. So we need only
2652 consider *prefixes* of the string; there is no need to look up
2653 "B::C" separately as a symbol in the previous example. */
2655 p2
= p
; /* save for restart */
2658 /* Extract the class name. */
2660 while (p
!= *argptr
&& p
[-1] == ' ')
2662 copy
= (char *) alloca (p
- *argptr
+ 1);
2663 memcpy (copy
, *argptr
, p
- *argptr
);
2664 copy
[p
- *argptr
] = 0;
2666 /* Discard the class name from the arg. */
2667 p
= p1
+ (p1
[0] == ':' ? 2 : 1);
2668 while (*p
== ' ' || *p
== '\t')
2672 sym_class
= lookup_symbol (copy
, 0, STRUCT_NAMESPACE
, 0,
2673 (struct symtab
**) NULL
);
2676 (t
= check_typedef (SYMBOL_TYPE (sym_class
)),
2677 (TYPE_CODE (t
) == TYPE_CODE_STRUCT
2678 || TYPE_CODE (t
) == TYPE_CODE_UNION
)))
2680 /* Arg token is not digits => try it as a function name
2681 Find the next token(everything up to end or next blank). */
2683 && strchr (gdb_completer_quote_characters
, **argptr
) != NULL
)
2685 p
= skip_quoted (*argptr
);
2686 *argptr
= *argptr
+ 1;
2691 while (*p
&& *p
!= ' ' && *p
!= '\t' && *p
!= ',' && *p
!= ':')
2695 q = operator_chars (*argptr, &q1);
2699 char *tmp = alloca (q1 - q + 1);
2700 memcpy (tmp, q, q1 - q);
2702 opname = cplus_mangle_opname (tmp, DMGL_ANSI);
2706 printf_filtered ("no mangling for \"%s\"\n", tmp);
2707 cplusplus_hint (saved_arg);
2708 return_to_top_level (RETURN_ERROR);
2710 copy = (char*) alloca (3 + strlen(opname));
2711 sprintf (copy, "__%s", opname);
2717 copy
= (char *) alloca (p
- *argptr
+ 1);
2718 memcpy (copy
, *argptr
, p
- *argptr
);
2719 copy
[p
- *argptr
] = '\0';
2721 && copy
[p
- *argptr
- 1]
2722 && strchr (gdb_completer_quote_characters
,
2723 copy
[p
- *argptr
- 1]) != NULL
)
2724 copy
[p
- *argptr
- 1] = '\0';
2727 /* no line number may be specified */
2728 while (*p
== ' ' || *p
== '\t')
2733 i1
= 0; /* counter for the symbol array */
2734 sym_arr
= (struct symbol
**) alloca (total_number_of_methods (t
)
2735 * sizeof (struct symbol
*));
2737 if (destructor_name_p (copy
, t
))
2739 /* Destructors are a special case. */
2740 int m_index
, f_index
;
2742 if (get_destructor_fn_field (t
, &m_index
, &f_index
))
2744 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (t
, m_index
);
2747 lookup_symbol (TYPE_FN_FIELD_PHYSNAME (f
, f_index
),
2748 NULL
, VAR_NAMESPACE
, (int *) NULL
,
2749 (struct symtab
**) NULL
);
2755 i1
= find_methods (t
, copy
, sym_arr
);
2758 /* There is exactly one field with that name. */
2761 if (sym
&& SYMBOL_CLASS (sym
) == LOC_BLOCK
)
2763 values
.sals
= (struct symtab_and_line
*)
2764 xmalloc (sizeof (struct symtab_and_line
));
2766 values
.sals
[0] = find_function_start_sal (sym
,
2777 /* There is more than one field with that name
2778 (overloaded). Ask the user which one to use. */
2779 return decode_line_2 (sym_arr
, i1
, funfirstline
, canonical
);
2785 if (OPNAME_PREFIX_P (copy
))
2787 tmp
= (char *) alloca (strlen (copy
+ 3) + 9);
2788 strcpy (tmp
, "operator ");
2789 strcat (tmp
, copy
+ 3);
2796 ("the class `%s' does not have destructor defined\n",
2797 SYMBOL_SOURCE_NAME (sym_class
));
2800 ("the class %s does not have any method named %s\n",
2801 SYMBOL_SOURCE_NAME (sym_class
), tmp
);
2802 cplusplus_hint (saved_arg
);
2803 return_to_top_level (RETURN_ERROR
);
2807 /* Move pointer up to next possible class/namespace token */
2808 p
= p2
+ 1; /* restart with old value +1 */
2809 /* Move pointer ahead to next double-colon */
2810 while (*p
&& (p
[0] != ' ') && (p
[0] != '\t') && (p
[0] != '\''))
2814 temp_end
= find_template_name_end (p
);
2816 error ("malformed template specification in command");
2819 else if ((p
[0] == ':') && (p
[1] == ':'))
2820 break; /* found double-colon */
2826 break; /* out of the while (1) */
2828 p2
= p
; /* save restart for next time around */
2829 *argptr
= saved_arg2
; /* restore argptr */
2832 /* Last chance attempt -- check entire name as a symbol */
2833 /* Use "copy" in preparation for jumping out of this block,
2834 to be consistent with usage following the jump target */
2835 copy
= (char *) alloca (p
- saved_arg2
+ 1);
2836 memcpy (copy
, saved_arg2
, p
- saved_arg2
);
2837 /* Note: if is_quoted should be true, we snuff out quote here anyway */
2838 copy
[p
- saved_arg2
] = '\000';
2839 /* Set argptr to skip over the name */
2840 *argptr
= (*p
== '\'') ? p
+ 1 : p
;
2841 /* Look up entire name */
2842 sym
= lookup_symbol (copy
, 0, VAR_NAMESPACE
, 0, &sym_symtab
);
2843 s
= (struct symtab
*) 0;
2844 /* Prepare to jump: restore the " if (condition)" so outer layers see it */
2845 /* Symbol was found --> jump to normal symbol processing.
2846 Code following "symbol_found" expects "copy" to have the
2847 symbol name, "sym" to have the symbol pointer, "s" to be
2848 a specified file's symtab, and sym_symtab to be the symbol's
2850 /* By jumping there we avoid falling through the FILE:LINE and
2851 FILE:FUNC processing stuff below */
2855 /* Couldn't find any interpretation as classes/namespaces, so give up */
2857 /* The quotes are important if copy is empty. */
2859 ("Can't find member of namespace, class, struct, or union named \"%s\"\n", copy
);
2860 cplusplus_hint (saved_arg
);
2861 return_to_top_level (RETURN_ERROR
);
2866 /* Extract the file name. */
2868 while (p
!= *argptr
&& p
[-1] == ' ')
2870 if ((*p
== '"') && is_quote_enclosed
)
2872 copy
= (char *) alloca (p
- *argptr
+ 1);
2873 if ((**argptr
== '"') && is_quote_enclosed
)
2875 memcpy (copy
, *argptr
+ 1, p
- *argptr
- 1);
2876 /* It may have the ending quote right after the file name */
2877 if (copy
[p
- *argptr
- 2] == '"')
2878 copy
[p
- *argptr
- 2] = 0;
2880 copy
[p
- *argptr
- 1] = 0;
2884 memcpy (copy
, *argptr
, p
- *argptr
);
2885 copy
[p
- *argptr
] = 0;
2888 /* Find that file's data. */
2889 s
= lookup_symtab (copy
);
2892 if (!have_full_symbols () && !have_partial_symbols ())
2893 error (no_symtab_msg
);
2894 error ("No source file named %s.", copy
);
2897 /* Discard the file name from the arg. */
2899 while (*p
== ' ' || *p
== '\t')
2904 /* No one really seems to know why this was added. It certainly
2905 breaks the command line, though, whenever the passed
2906 name is of the form ClassName::Method. This bit of code
2907 singles out the class name, and if funfirstline is set (for
2908 example, you are setting a breakpoint at this function),
2909 you get an error. This did not occur with earlier
2910 verions, so I am ifdef'ing this out. 3/29/99 */
2913 /* Check if what we have till now is a symbol name */
2915 /* We may be looking at a template instantiation such
2916 as "foo<int>". Check here whether we know about it,
2917 instead of falling through to the code below which
2918 handles ordinary function names, because that code
2919 doesn't like seeing '<' and '>' in a name -- the
2920 skip_quoted call doesn't go past them. So see if we
2921 can figure it out right now. */
2923 copy
= (char *) alloca (p
- *argptr
+ 1);
2924 memcpy (copy
, *argptr
, p
- *argptr
);
2925 copy
[p
- *argptr
] = '\000';
2926 sym
= lookup_symbol (copy
, 0, VAR_NAMESPACE
, 0, &sym_symtab
);
2929 /* Yes, we have a symbol; jump to symbol processing */
2930 /* Code after symbol_found expects S, SYM_SYMTAB, SYM,
2931 and COPY to be set correctly */
2932 *argptr
= (*p
== '\'') ? p
+ 1 : p
;
2933 s
= (struct symtab
*) 0;
2936 /* Otherwise fall out from here and go to file/line spec
2941 /* S is specified file's symtab, or 0 if no file specified.
2942 arg no longer contains the file name. */
2944 /* Check whether arg is all digits (and sign) */
2947 if (*q
== '-' || *q
== '+')
2949 while (*q
>= '0' && *q
<= '9')
2952 if (q
!= *argptr
&& (*q
== 0 || *q
== ' ' || *q
== '\t' || *q
== ','))
2954 /* We found a token consisting of all digits -- at least one digit. */
2961 /* We might need a canonical line spec if no file was specified. */
2962 int need_canonical
= (s
== 0) ? 1 : 0;
2964 /* This is where we need to make sure that we have good defaults.
2965 We must guarantee that this section of code is never executed
2966 when we are called with just a function name, since
2967 select_source_symtab calls us with such an argument */
2969 if (s
== 0 && default_symtab
== 0)
2971 select_source_symtab (0);
2972 default_symtab
= current_source_symtab
;
2973 default_line
= current_source_line
;
2976 if (**argptr
== '+')
2977 sign
= plus
, (*argptr
)++;
2978 else if (**argptr
== '-')
2979 sign
= minus
, (*argptr
)++;
2980 val
.line
= atoi (*argptr
);
2987 val
.line
= default_line
+ val
.line
;
2993 val
.line
= default_line
- val
.line
;
2998 break; /* No need to adjust val.line. */
3001 while (*q
== ' ' || *q
== '\t')
3007 /* It is possible that this source file has more than one symtab,
3008 and that the new line number specification has moved us from the
3009 default (in s) to a new one. */
3010 val
.symtab
= find_line_symtab (s
, val
.line
, NULL
, NULL
);
3011 if (val
.symtab
== 0)
3015 values
.sals
= (struct symtab_and_line
*)
3016 xmalloc (sizeof (struct symtab_and_line
));
3017 values
.sals
[0] = val
;
3020 build_canonical_line_spec (values
.sals
, NULL
, canonical
);
3024 /* Arg token is not digits => try it as a variable name
3025 Find the next token (everything up to end or next whitespace). */
3027 if (**argptr
== '$') /* May be a convenience variable */
3028 p
= skip_quoted (*argptr
+ (((*argptr
)[1] == '$') ? 2 : 1)); /* One or two $ chars possible */
3031 p
= skip_quoted (*argptr
);
3033 error ("Unmatched single quote.");
3035 else if (has_parens
)
3041 p
= skip_quoted (*argptr
);
3044 if (is_quote_enclosed
&& **argptr
== '"')
3047 copy
= (char *) alloca (p
- *argptr
+ 1);
3048 memcpy (copy
, *argptr
, p
- *argptr
);
3049 copy
[p
- *argptr
] = '\0';
3052 && copy
[0] == copy
[p
- *argptr
- 1]
3053 && strchr (gdb_completer_quote_characters
, copy
[0]) != NULL
)
3055 copy
[p
- *argptr
- 1] = '\0';
3058 while (*p
== ' ' || *p
== '\t')
3062 /* If it starts with $: may be a legitimate variable or routine name
3063 (e.g. HP-UX millicode routines such as $$dyncall), or it may
3064 be history value, or it may be a convenience variable */
3070 int need_canonical
= 0;
3072 p
= (copy
[1] == '$') ? copy
+ 2 : copy
+ 1;
3073 while (*p
>= '0' && *p
<= '9')
3075 if (!*p
) /* reached end of token without hitting non-digit */
3077 /* We have a value history reference */
3078 sscanf ((copy
[1] == '$') ? copy
+ 2 : copy
+ 1, "%d", &index
);
3079 valx
= access_value_history ((copy
[1] == '$') ? -index
: index
);
3080 if (TYPE_CODE (VALUE_TYPE (valx
)) != TYPE_CODE_INT
)
3081 error ("History values used in line specs must have integer values.");
3085 /* Not all digits -- may be user variable/function or a
3086 convenience variable */
3088 /* Look up entire name as a symbol first */
3089 sym
= lookup_symbol (copy
, 0, VAR_NAMESPACE
, 0, &sym_symtab
);
3090 s
= (struct symtab
*) 0;
3092 /* Symbol was found --> jump to normal symbol processing.
3093 Code following "symbol_found" expects "copy" to have the
3094 symbol name, "sym" to have the symbol pointer, "s" to be
3095 a specified file's symtab, and sym_symtab to be the symbol's
3100 /* If symbol was not found, look in minimal symbol tables */
3101 msymbol
= lookup_minimal_symbol (copy
, 0, 0);
3102 /* Min symbol was found --> jump to minsym processing. */
3104 goto minimal_symbol_found
;
3106 /* Not a user variable or function -- must be convenience variable */
3107 need_canonical
= (s
== 0) ? 1 : 0;
3108 valx
= value_of_internalvar (lookup_internalvar (copy
+ 1));
3109 if (TYPE_CODE (VALUE_TYPE (valx
)) != TYPE_CODE_INT
)
3110 error ("Convenience variables used in line specs must have integer values.");
3113 /* Either history value or convenience value from above, in valx */
3114 val
.symtab
= s
? s
: default_symtab
;
3115 val
.line
= value_as_long (valx
);
3118 values
.sals
= (struct symtab_and_line
*) xmalloc (sizeof val
);
3119 values
.sals
[0] = val
;
3123 build_canonical_line_spec (values
.sals
, NULL
, canonical
);
3129 /* Look up that token as a variable.
3130 If file specified, use that file's per-file block to start with. */
3132 sym
= lookup_symbol (copy
,
3133 (s
? BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
)
3134 : get_selected_block ()),
3135 VAR_NAMESPACE
, 0, &sym_symtab
);
3137 symbol_found
: /* We also jump here from inside the C++ class/namespace
3138 code on finding a symbol of the form "A::B::C" */
3142 if (SYMBOL_CLASS (sym
) == LOC_BLOCK
)
3144 /* Arg is the name of a function */
3145 values
.sals
= (struct symtab_and_line
*)
3146 xmalloc (sizeof (struct symtab_and_line
));
3147 values
.sals
[0] = find_function_start_sal (sym
, funfirstline
);
3150 /* Don't use the SYMBOL_LINE; if used at all it points to
3151 the line containing the parameters or thereabouts, not
3152 the first line of code. */
3154 /* We might need a canonical line spec if it is a static
3158 struct blockvector
*bv
= BLOCKVECTOR (sym_symtab
);
3159 struct block
*b
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
3160 if (lookup_block_symbol (b
, copy
, VAR_NAMESPACE
) != NULL
)
3161 build_canonical_line_spec (values
.sals
, copy
, canonical
);
3168 error ("\"%s\" is not a function", copy
);
3169 else if (SYMBOL_LINE (sym
) != 0)
3171 /* We know its line number. */
3172 values
.sals
= (struct symtab_and_line
*)
3173 xmalloc (sizeof (struct symtab_and_line
));
3175 memset (&values
.sals
[0], 0, sizeof (values
.sals
[0]));
3176 values
.sals
[0].symtab
= sym_symtab
;
3177 values
.sals
[0].line
= SYMBOL_LINE (sym
);
3181 /* This can happen if it is compiled with a compiler which doesn't
3182 put out line numbers for variables. */
3183 /* FIXME: Shouldn't we just set .line and .symtab to zero
3184 and return? For example, "info line foo" could print
3186 error ("Line number not known for symbol \"%s\"", copy
);
3190 msymbol
= lookup_minimal_symbol (copy
, NULL
, NULL
);
3192 minimal_symbol_found
: /* We also jump here from the case for variables
3193 that begin with '$' */
3195 if (msymbol
!= NULL
)
3197 values
.sals
= (struct symtab_and_line
*)
3198 xmalloc (sizeof (struct symtab_and_line
));
3199 values
.sals
[0] = find_pc_sect_line (SYMBOL_VALUE_ADDRESS (msymbol
),
3200 (struct sec
*) 0, 0);
3201 values
.sals
[0].section
= SYMBOL_BFD_SECTION (msymbol
);
3204 values
.sals
[0].pc
+= FUNCTION_START_OFFSET
;
3205 values
.sals
[0].pc
= SKIP_PROLOGUE (values
.sals
[0].pc
);
3211 if (!have_full_symbols () &&
3212 !have_partial_symbols () && !have_minimal_symbols ())
3213 error (no_symtab_msg
);
3215 error ("Function \"%s\" not defined.", copy
);
3216 return values
; /* for lint */
3219 struct symtabs_and_lines
3220 decode_line_spec (char *string
, int funfirstline
)
3222 struct symtabs_and_lines sals
;
3224 error ("Empty line specification.");
3225 sals
= decode_line_1 (&string
, funfirstline
,
3226 current_source_symtab
, current_source_line
,
3229 error ("Junk at end of line specification: %s", string
);
3233 /* Given a list of NELTS symbols in SYM_ARR, return a list of lines to
3234 operate on (ask user if necessary).
3235 If CANONICAL is non-NULL return a corresponding array of mangled names
3236 as canonical line specs there. */
3238 static struct symtabs_and_lines
3239 decode_line_2 (sym_arr
, nelts
, funfirstline
, canonical
)
3240 struct symbol
*sym_arr
[];
3245 struct symtabs_and_lines values
, return_values
;
3250 struct cleanup
*old_chain
;
3251 char **canonical_arr
= (char **) NULL
;
3253 values
.sals
= (struct symtab_and_line
*)
3254 alloca (nelts
* sizeof (struct symtab_and_line
));
3255 return_values
.sals
= (struct symtab_and_line
*)
3256 xmalloc (nelts
* sizeof (struct symtab_and_line
));
3257 old_chain
= make_cleanup (free
, return_values
.sals
);
3261 canonical_arr
= (char **) xmalloc (nelts
* sizeof (char *));
3262 make_cleanup (free
, canonical_arr
);
3263 memset (canonical_arr
, 0, nelts
* sizeof (char *));
3264 *canonical
= canonical_arr
;
3268 printf_unfiltered ("[0] cancel\n[1] all\n");
3271 INIT_SAL (&return_values
.sals
[i
]); /* initialize to zeroes */
3272 INIT_SAL (&values
.sals
[i
]);
3273 if (sym_arr
[i
] && SYMBOL_CLASS (sym_arr
[i
]) == LOC_BLOCK
)
3275 values
.sals
[i
] = find_function_start_sal (sym_arr
[i
], funfirstline
);
3276 printf_unfiltered ("[%d] %s at %s:%d\n",
3278 SYMBOL_SOURCE_NAME (sym_arr
[i
]),
3279 values
.sals
[i
].symtab
->filename
,
3280 values
.sals
[i
].line
);
3283 printf_unfiltered ("?HERE\n");
3287 if ((prompt
= getenv ("PS2")) == NULL
)
3291 args
= command_line_input (prompt
, 0, "overload-choice");
3293 if (args
== 0 || *args
== 0)
3294 error_no_arg ("one or more choice numbers");
3302 while (*arg1
>= '0' && *arg1
<= '9')
3304 if (*arg1
&& *arg1
!= ' ' && *arg1
!= '\t')
3305 error ("Arguments must be choice numbers.");
3310 error ("cancelled");
3315 for (i
= 0; i
< nelts
; i
++)
3317 if (canonical_arr
[i
] == NULL
)
3319 symname
= SYMBOL_NAME (sym_arr
[i
]);
3320 canonical_arr
[i
] = savestring (symname
, strlen (symname
));
3324 memcpy (return_values
.sals
, values
.sals
,
3325 (nelts
* sizeof (struct symtab_and_line
)));
3326 return_values
.nelts
= nelts
;
3327 discard_cleanups (old_chain
);
3328 return return_values
;
3331 if (num
>= nelts
+ 2)
3333 printf_unfiltered ("No choice number %d.\n", num
);
3338 if (values
.sals
[num
].pc
)
3342 symname
= SYMBOL_NAME (sym_arr
[num
]);
3343 make_cleanup (free
, symname
);
3344 canonical_arr
[i
] = savestring (symname
, strlen (symname
));
3346 return_values
.sals
[i
++] = values
.sals
[num
];
3347 values
.sals
[num
].pc
= 0;
3351 printf_unfiltered ("duplicate request for %d ignored.\n", num
);
3356 while (*args
== ' ' || *args
== '\t')
3359 return_values
.nelts
= i
;
3360 discard_cleanups (old_chain
);
3361 return return_values
;
3365 /* Slave routine for sources_info. Force line breaks at ,'s.
3366 NAME is the name to print and *FIRST is nonzero if this is the first
3367 name printed. Set *FIRST to zero. */
3369 output_source_filename (char *name
, int *first
)
3371 /* Table of files printed so far. Since a single source file can
3372 result in several partial symbol tables, we need to avoid printing
3373 it more than once. Note: if some of the psymtabs are read in and
3374 some are not, it gets printed both under "Source files for which
3375 symbols have been read" and "Source files for which symbols will
3376 be read in on demand". I consider this a reasonable way to deal
3377 with the situation. I'm not sure whether this can also happen for
3378 symtabs; it doesn't hurt to check. */
3379 static char **tab
= NULL
;
3380 /* Allocated size of tab in elements.
3381 Start with one 256-byte block (when using GNU malloc.c).
3382 24 is the malloc overhead when range checking is in effect. */
3383 static int tab_alloc_size
= (256 - 24) / sizeof (char *);
3384 /* Current size of tab in elements. */
3385 static int tab_cur_size
;
3392 tab
= (char **) xmalloc (tab_alloc_size
* sizeof (*tab
));
3396 /* Is NAME in tab? */
3397 for (p
= tab
; p
< tab
+ tab_cur_size
; p
++)
3398 if (STREQ (*p
, name
))
3399 /* Yes; don't print it again. */
3401 /* No; add it to tab. */
3402 if (tab_cur_size
== tab_alloc_size
)
3404 tab_alloc_size
*= 2;
3405 tab
= (char **) xrealloc ((char *) tab
, tab_alloc_size
* sizeof (*tab
));
3407 tab
[tab_cur_size
++] = name
;
3415 printf_filtered (", ");
3419 fputs_filtered (name
, gdb_stdout
);
3423 sources_info (char *ignore
, int from_tty
)
3425 register struct symtab
*s
;
3426 register struct partial_symtab
*ps
;
3427 register struct objfile
*objfile
;
3430 if (!have_full_symbols () && !have_partial_symbols ())
3432 error (no_symtab_msg
);
3435 printf_filtered ("Source files for which symbols have been read in:\n\n");
3438 ALL_SYMTABS (objfile
, s
)
3440 output_source_filename (s
->filename
, &first
);
3442 printf_filtered ("\n\n");
3444 printf_filtered ("Source files for which symbols will be read in on demand:\n\n");
3447 ALL_PSYMTABS (objfile
, ps
)
3451 output_source_filename (ps
->filename
, &first
);
3454 printf_filtered ("\n");
3458 file_matches (file
, files
, nfiles
)
3465 if (file
!= NULL
&& nfiles
!= 0)
3467 for (i
= 0; i
< nfiles
; i
++)
3469 if (strcmp (files
[i
], basename (file
)) == 0)
3473 else if (nfiles
== 0)
3478 /* Free any memory associated with a search. */
3480 free_search_symbols (struct symbol_search
*symbols
)
3482 struct symbol_search
*p
;
3483 struct symbol_search
*next
;
3485 for (p
= symbols
; p
!= NULL
; p
= next
)
3493 do_free_search_symbols_cleanup (void *symbols
)
3495 free_search_symbols (symbols
);
3499 make_cleanup_free_search_symbols (struct symbol_search
*symbols
)
3501 return make_cleanup (do_free_search_symbols_cleanup
, symbols
);
3505 /* Search the symbol table for matches to the regular expression REGEXP,
3506 returning the results in *MATCHES.
3508 Only symbols of KIND are searched:
3509 FUNCTIONS_NAMESPACE - search all functions
3510 TYPES_NAMESPACE - search all type names
3511 METHODS_NAMESPACE - search all methods NOT IMPLEMENTED
3512 VARIABLES_NAMESPACE - search all symbols, excluding functions, type names,
3513 and constants (enums)
3515 free_search_symbols should be called when *MATCHES is no longer needed.
3518 search_symbols (regexp
, kind
, nfiles
, files
, matches
)
3520 namespace_enum kind
;
3523 struct symbol_search
**matches
;
3526 register struct symtab
*s
;
3527 register struct partial_symtab
*ps
;
3528 register struct blockvector
*bv
;
3529 struct blockvector
*prev_bv
= 0;
3530 register struct block
*b
;
3533 register struct symbol
*sym
;
3534 struct partial_symbol
**psym
;
3535 struct objfile
*objfile
;
3536 struct minimal_symbol
*msymbol
;
3539 static enum minimal_symbol_type types
[]
3541 {mst_data
, mst_text
, mst_abs
, mst_unknown
};
3542 static enum minimal_symbol_type types2
[]
3544 {mst_bss
, mst_file_text
, mst_abs
, mst_unknown
};
3545 static enum minimal_symbol_type types3
[]
3547 {mst_file_data
, mst_solib_trampoline
, mst_abs
, mst_unknown
};
3548 static enum minimal_symbol_type types4
[]
3550 {mst_file_bss
, mst_text
, mst_abs
, mst_unknown
};
3551 enum minimal_symbol_type ourtype
;
3552 enum minimal_symbol_type ourtype2
;
3553 enum minimal_symbol_type ourtype3
;
3554 enum minimal_symbol_type ourtype4
;
3555 struct symbol_search
*sr
;
3556 struct symbol_search
*psr
;
3557 struct symbol_search
*tail
;
3558 struct cleanup
*old_chain
= NULL
;
3560 if (kind
< LABEL_NAMESPACE
)
3561 error ("must search on specific namespace");
3563 ourtype
= types
[(int) (kind
- LABEL_NAMESPACE
)];
3564 ourtype2
= types2
[(int) (kind
- LABEL_NAMESPACE
)];
3565 ourtype3
= types3
[(int) (kind
- LABEL_NAMESPACE
)];
3566 ourtype4
= types4
[(int) (kind
- LABEL_NAMESPACE
)];
3568 sr
= *matches
= NULL
;
3573 /* Make sure spacing is right for C++ operators.
3574 This is just a courtesy to make the matching less sensitive
3575 to how many spaces the user leaves between 'operator'
3576 and <TYPENAME> or <OPERATOR>. */
3578 char *opname
= operator_chars (regexp
, &opend
);
3581 int fix
= -1; /* -1 means ok; otherwise number of spaces needed. */
3582 if (isalpha (*opname
) || *opname
== '_' || *opname
== '$')
3584 /* There should 1 space between 'operator' and 'TYPENAME'. */
3585 if (opname
[-1] != ' ' || opname
[-2] == ' ')
3590 /* There should 0 spaces between 'operator' and 'OPERATOR'. */
3591 if (opname
[-1] == ' ')
3594 /* If wrong number of spaces, fix it. */
3597 char *tmp
= (char *) alloca (opend
- opname
+ 10);
3598 sprintf (tmp
, "operator%.*s%s", fix
, " ", opname
);
3603 if (0 != (val
= re_comp (regexp
)))
3604 error ("Invalid regexp (%s): %s", val
, regexp
);
3607 /* Search through the partial symtabs *first* for all symbols
3608 matching the regexp. That way we don't have to reproduce all of
3609 the machinery below. */
3611 ALL_PSYMTABS (objfile
, ps
)
3613 struct partial_symbol
**bound
, **gbound
, **sbound
;
3619 gbound
= objfile
->global_psymbols
.list
+ ps
->globals_offset
+ ps
->n_global_syms
;
3620 sbound
= objfile
->static_psymbols
.list
+ ps
->statics_offset
+ ps
->n_static_syms
;
3623 /* Go through all of the symbols stored in a partial
3624 symtab in one loop. */
3625 psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
3630 if (bound
== gbound
&& ps
->n_static_syms
!= 0)
3632 psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
3643 /* If it would match (logic taken from loop below)
3644 load the file and go on to the next one */
3645 if (file_matches (ps
->filename
, files
, nfiles
)
3646 && ((regexp
== NULL
|| SYMBOL_MATCHES_REGEXP (*psym
))
3647 && ((kind
== VARIABLES_NAMESPACE
&& SYMBOL_CLASS (*psym
) != LOC_TYPEDEF
3648 && SYMBOL_CLASS (*psym
) != LOC_BLOCK
)
3649 || (kind
== FUNCTIONS_NAMESPACE
&& SYMBOL_CLASS (*psym
) == LOC_BLOCK
)
3650 || (kind
== TYPES_NAMESPACE
&& SYMBOL_CLASS (*psym
) == LOC_TYPEDEF
)
3651 || (kind
== METHODS_NAMESPACE
&& SYMBOL_CLASS (*psym
) == LOC_BLOCK
))))
3653 PSYMTAB_TO_SYMTAB (ps
);
3661 /* Here, we search through the minimal symbol tables for functions
3662 and variables that match, and force their symbols to be read.
3663 This is in particular necessary for demangled variable names,
3664 which are no longer put into the partial symbol tables.
3665 The symbol will then be found during the scan of symtabs below.
3667 For functions, find_pc_symtab should succeed if we have debug info
3668 for the function, for variables we have to call lookup_symbol
3669 to determine if the variable has debug info.
3670 If the lookup fails, set found_misc so that we will rescan to print
3671 any matching symbols without debug info.
3674 if (nfiles
== 0 && (kind
== VARIABLES_NAMESPACE
|| kind
== FUNCTIONS_NAMESPACE
))
3676 ALL_MSYMBOLS (objfile
, msymbol
)
3678 if (MSYMBOL_TYPE (msymbol
) == ourtype
||
3679 MSYMBOL_TYPE (msymbol
) == ourtype2
||
3680 MSYMBOL_TYPE (msymbol
) == ourtype3
||
3681 MSYMBOL_TYPE (msymbol
) == ourtype4
)
3683 if (regexp
== NULL
|| SYMBOL_MATCHES_REGEXP (msymbol
))
3685 if (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
)))
3687 if (kind
== FUNCTIONS_NAMESPACE
3688 || lookup_symbol (SYMBOL_NAME (msymbol
),
3689 (struct block
*) NULL
,
3691 0, (struct symtab
**) NULL
) == NULL
)
3699 ALL_SYMTABS (objfile
, s
)
3701 bv
= BLOCKVECTOR (s
);
3702 /* Often many files share a blockvector.
3703 Scan each blockvector only once so that
3704 we don't get every symbol many times.
3705 It happens that the first symtab in the list
3706 for any given blockvector is the main file. */
3708 for (i
= GLOBAL_BLOCK
; i
<= STATIC_BLOCK
; i
++)
3710 b
= BLOCKVECTOR_BLOCK (bv
, i
);
3711 /* Skip the sort if this block is always sorted. */
3712 if (!BLOCK_SHOULD_SORT (b
))
3713 sort_block_syms (b
);
3714 for (j
= 0; j
< BLOCK_NSYMS (b
); j
++)
3717 sym
= BLOCK_SYM (b
, j
);
3718 if (file_matches (s
->filename
, files
, nfiles
)
3719 && ((regexp
== NULL
|| SYMBOL_MATCHES_REGEXP (sym
))
3720 && ((kind
== VARIABLES_NAMESPACE
&& SYMBOL_CLASS (sym
) != LOC_TYPEDEF
3721 && SYMBOL_CLASS (sym
) != LOC_BLOCK
3722 && SYMBOL_CLASS (sym
) != LOC_CONST
)
3723 || (kind
== FUNCTIONS_NAMESPACE
&& SYMBOL_CLASS (sym
) == LOC_BLOCK
)
3724 || (kind
== TYPES_NAMESPACE
&& SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
3725 || (kind
== METHODS_NAMESPACE
&& SYMBOL_CLASS (sym
) == LOC_BLOCK
))))
3728 psr
= (struct symbol_search
*) xmalloc (sizeof (struct symbol_search
));
3732 psr
->msymbol
= NULL
;
3737 old_chain
= make_cleanup_free_search_symbols (sr
);
3748 /* If there are no eyes, avoid all contact. I mean, if there are
3749 no debug symbols, then print directly from the msymbol_vector. */
3751 if (found_misc
|| kind
!= FUNCTIONS_NAMESPACE
)
3753 ALL_MSYMBOLS (objfile
, msymbol
)
3755 if (MSYMBOL_TYPE (msymbol
) == ourtype
||
3756 MSYMBOL_TYPE (msymbol
) == ourtype2
||
3757 MSYMBOL_TYPE (msymbol
) == ourtype3
||
3758 MSYMBOL_TYPE (msymbol
) == ourtype4
)
3760 if (regexp
== NULL
|| SYMBOL_MATCHES_REGEXP (msymbol
))
3762 /* Functions: Look up by address. */
3763 if (kind
!= FUNCTIONS_NAMESPACE
||
3764 (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
))))
3766 /* Variables/Absolutes: Look up by name */
3767 if (lookup_symbol (SYMBOL_NAME (msymbol
),
3768 (struct block
*) NULL
, VAR_NAMESPACE
,
3769 0, (struct symtab
**) NULL
) == NULL
)
3772 psr
= (struct symbol_search
*) xmalloc (sizeof (struct symbol_search
));
3774 psr
->msymbol
= msymbol
;
3781 old_chain
= make_cleanup_free_search_symbols (sr
);
3795 discard_cleanups (old_chain
);
3798 /* Helper function for symtab_symbol_info, this function uses
3799 the data returned from search_symbols() to print information
3800 regarding the match to gdb_stdout.
3803 print_symbol_info (namespace_enum kind
, struct symtab
*s
, struct symbol
*sym
,
3804 int block
, char *last
)
3806 if (last
== NULL
|| strcmp (last
, s
->filename
) != 0)
3808 fputs_filtered ("\nFile ", gdb_stdout
);
3809 fputs_filtered (s
->filename
, gdb_stdout
);
3810 fputs_filtered (":\n", gdb_stdout
);
3813 if (kind
!= TYPES_NAMESPACE
&& block
== STATIC_BLOCK
)
3814 printf_filtered ("static ");
3816 /* Typedef that is not a C++ class */
3817 if (kind
== TYPES_NAMESPACE
3818 && SYMBOL_NAMESPACE (sym
) != STRUCT_NAMESPACE
)
3819 c_typedef_print (SYMBOL_TYPE (sym
), sym
, gdb_stdout
);
3820 /* variable, func, or typedef-that-is-c++-class */
3821 else if (kind
< TYPES_NAMESPACE
||
3822 (kind
== TYPES_NAMESPACE
&&
3823 SYMBOL_NAMESPACE (sym
) == STRUCT_NAMESPACE
))
3825 type_print (SYMBOL_TYPE (sym
),
3826 (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
3827 ? "" : SYMBOL_SOURCE_NAME (sym
)),
3830 printf_filtered (";\n");
3835 /* Tiemann says: "info methods was never implemented." */
3836 char *demangled_name
;
3837 c_type_print_base (TYPE_FN_FIELD_TYPE (t
, block
),
3839 c_type_print_varspec_prefix (TYPE_FN_FIELD_TYPE (t
, block
),
3841 if (TYPE_FN_FIELD_STUB (t
, block
))
3842 check_stub_method (TYPE_DOMAIN_TYPE (type
), j
, block
);
3844 cplus_demangle (TYPE_FN_FIELD_PHYSNAME (t
, block
),
3845 DMGL_ANSI
| DMGL_PARAMS
);
3846 if (demangled_name
== NULL
)
3847 fprintf_filtered (stream
, "<badly mangled name %s>",
3848 TYPE_FN_FIELD_PHYSNAME (t
, block
));
3851 fputs_filtered (demangled_name
, stream
);
3852 free (demangled_name
);
3858 /* This help function for symtab_symbol_info() prints information
3859 for non-debugging symbols to gdb_stdout.
3862 print_msymbol_info (struct minimal_symbol
*msymbol
)
3864 printf_filtered (" %08lx %s\n",
3865 (unsigned long) SYMBOL_VALUE_ADDRESS (msymbol
),
3866 SYMBOL_SOURCE_NAME (msymbol
));
3869 /* This is the guts of the commands "info functions", "info types", and
3870 "info variables". It calls search_symbols to find all matches and then
3871 print_[m]symbol_info to print out some useful information about the
3875 symtab_symbol_info (char *regexp
, namespace_enum kind
, int from_tty
)
3877 static char *classnames
[]
3879 {"variable", "function", "type", "method"};
3880 struct symbol_search
*symbols
;
3881 struct symbol_search
*p
;
3882 struct cleanup
*old_chain
;
3883 char *last_filename
= NULL
;
3886 /* must make sure that if we're interrupted, symbols gets freed */
3887 search_symbols (regexp
, kind
, 0, (char **) NULL
, &symbols
);
3888 old_chain
= make_cleanup_free_search_symbols (symbols
);
3890 printf_filtered (regexp
3891 ? "All %ss matching regular expression \"%s\":\n"
3892 : "All defined %ss:\n",
3893 classnames
[(int) (kind
- LABEL_NAMESPACE
- 1)], regexp
);
3895 for (p
= symbols
; p
!= NULL
; p
= p
->next
)
3899 if (p
->msymbol
!= NULL
)
3903 printf_filtered ("\nNon-debugging symbols:\n");
3906 print_msymbol_info (p
->msymbol
);
3910 print_symbol_info (kind
,
3915 last_filename
= p
->symtab
->filename
;
3919 do_cleanups (old_chain
);
3923 variables_info (char *regexp
, int from_tty
)
3925 symtab_symbol_info (regexp
, VARIABLES_NAMESPACE
, from_tty
);
3929 functions_info (char *regexp
, int from_tty
)
3931 symtab_symbol_info (regexp
, FUNCTIONS_NAMESPACE
, from_tty
);
3936 types_info (char *regexp
, int from_tty
)
3938 symtab_symbol_info (regexp
, TYPES_NAMESPACE
, from_tty
);
3942 /* Tiemann says: "info methods was never implemented." */
3944 methods_info (char *regexp
)
3946 symtab_symbol_info (regexp
, METHODS_NAMESPACE
, 0, from_tty
);
3950 /* Breakpoint all functions matching regular expression. */
3953 rbreak_command_wrapper (char *regexp
, int from_tty
)
3955 rbreak_command (regexp
, from_tty
);
3959 rbreak_command (char *regexp
, int from_tty
)
3961 struct symbol_search
*ss
;
3962 struct symbol_search
*p
;
3963 struct cleanup
*old_chain
;
3965 search_symbols (regexp
, FUNCTIONS_NAMESPACE
, 0, (char **) NULL
, &ss
);
3966 old_chain
= make_cleanup_free_search_symbols (ss
);
3968 for (p
= ss
; p
!= NULL
; p
= p
->next
)
3970 if (p
->msymbol
== NULL
)
3972 char *string
= (char *) alloca (strlen (p
->symtab
->filename
)
3973 + strlen (SYMBOL_NAME (p
->symbol
))
3975 strcpy (string
, p
->symtab
->filename
);
3976 strcat (string
, ":'");
3977 strcat (string
, SYMBOL_NAME (p
->symbol
));
3978 strcat (string
, "'");
3979 break_command (string
, from_tty
);
3980 print_symbol_info (FUNCTIONS_NAMESPACE
,
3984 p
->symtab
->filename
);
3988 break_command (SYMBOL_NAME (p
->msymbol
), from_tty
);
3989 printf_filtered ("<function, no debug info> %s;\n",
3990 SYMBOL_SOURCE_NAME (p
->msymbol
));
3994 do_cleanups (old_chain
);
3998 /* Return Nonzero if block a is lexically nested within block b,
3999 or if a and b have the same pc range.
4000 Return zero otherwise. */
4002 contained_in (struct block
*a
, struct block
*b
)
4006 return BLOCK_START (a
) >= BLOCK_START (b
)
4007 && BLOCK_END (a
) <= BLOCK_END (b
);
4011 /* Helper routine for make_symbol_completion_list. */
4013 static int return_val_size
;
4014 static int return_val_index
;
4015 static char **return_val
;
4017 #define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \
4019 if (SYMBOL_DEMANGLED_NAME (symbol) != NULL) \
4020 /* Put only the mangled name on the list. */ \
4021 /* Advantage: "b foo<TAB>" completes to "b foo(int, int)" */ \
4022 /* Disadvantage: "b foo__i<TAB>" doesn't complete. */ \
4023 completion_list_add_name \
4024 (SYMBOL_DEMANGLED_NAME (symbol), (sym_text), (len), (text), (word)); \
4026 completion_list_add_name \
4027 (SYMBOL_NAME (symbol), (sym_text), (len), (text), (word)); \
4030 /* Test to see if the symbol specified by SYMNAME (which is already
4031 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
4032 characters. If so, add it to the current completion list. */
4035 completion_list_add_name (char *symname
, char *sym_text
, int sym_text_len
,
4036 char *text
, char *word
)
4041 /* clip symbols that cannot match */
4043 if (strncmp (symname
, sym_text
, sym_text_len
) != 0)
4048 /* Clip any symbol names that we've already considered. (This is a
4049 time optimization) */
4051 for (i
= 0; i
< return_val_index
; ++i
)
4053 if (STREQ (symname
, return_val
[i
]))
4059 /* We have a match for a completion, so add SYMNAME to the current list
4060 of matches. Note that the name is moved to freshly malloc'd space. */
4064 if (word
== sym_text
)
4066 new = xmalloc (strlen (symname
) + 5);
4067 strcpy (new, symname
);
4069 else if (word
> sym_text
)
4071 /* Return some portion of symname. */
4072 new = xmalloc (strlen (symname
) + 5);
4073 strcpy (new, symname
+ (word
- sym_text
));
4077 /* Return some of SYM_TEXT plus symname. */
4078 new = xmalloc (strlen (symname
) + (sym_text
- word
) + 5);
4079 strncpy (new, word
, sym_text
- word
);
4080 new[sym_text
- word
] = '\0';
4081 strcat (new, symname
);
4084 /* Recheck for duplicates if we intend to add a modified symbol. */
4085 if (word
!= sym_text
)
4087 for (i
= 0; i
< return_val_index
; ++i
)
4089 if (STREQ (new, return_val
[i
]))
4097 if (return_val_index
+ 3 > return_val_size
)
4099 newsize
= (return_val_size
*= 2) * sizeof (char *);
4100 return_val
= (char **) xrealloc ((char *) return_val
, newsize
);
4102 return_val
[return_val_index
++] = new;
4103 return_val
[return_val_index
] = NULL
;
4107 /* Return a NULL terminated array of all symbols (regardless of class) which
4108 begin by matching TEXT. If the answer is no symbols, then the return value
4109 is an array which contains only a NULL pointer.
4111 Problem: All of the symbols have to be copied because readline frees them.
4112 I'm not going to worry about this; hopefully there won't be that many. */
4115 make_symbol_completion_list (char *text
, char *word
)
4117 register struct symbol
*sym
;
4118 register struct symtab
*s
;
4119 register struct partial_symtab
*ps
;
4120 register struct minimal_symbol
*msymbol
;
4121 register struct objfile
*objfile
;
4122 register struct block
*b
, *surrounding_static_block
= 0;
4124 struct partial_symbol
**psym
;
4125 /* The symbol we are completing on. Points in same buffer as text. */
4127 /* Length of sym_text. */
4130 /* Now look for the symbol we are supposed to complete on.
4131 FIXME: This should be language-specific. */
4135 char *quote_pos
= NULL
;
4137 /* First see if this is a quoted string. */
4139 for (p
= text
; *p
!= '\0'; ++p
)
4141 if (quote_found
!= '\0')
4143 if (*p
== quote_found
)
4144 /* Found close quote. */
4146 else if (*p
== '\\' && p
[1] == quote_found
)
4147 /* A backslash followed by the quote character
4148 doesn't end the string. */
4151 else if (*p
== '\'' || *p
== '"')
4157 if (quote_found
== '\'')
4158 /* A string within single quotes can be a symbol, so complete on it. */
4159 sym_text
= quote_pos
+ 1;
4160 else if (quote_found
== '"')
4161 /* A double-quoted string is never a symbol, nor does it make sense
4162 to complete it any other way. */
4166 /* It is not a quoted string. Break it based on the characters
4167 which are in symbols. */
4170 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
4179 sym_text_len
= strlen (sym_text
);
4181 return_val_size
= 100;
4182 return_val_index
= 0;
4183 return_val
= (char **) xmalloc ((return_val_size
+ 1) * sizeof (char *));
4184 return_val
[0] = NULL
;
4186 /* Look through the partial symtabs for all symbols which begin
4187 by matching SYM_TEXT. Add each one that you find to the list. */
4189 ALL_PSYMTABS (objfile
, ps
)
4191 /* If the psymtab's been read in we'll get it when we search
4192 through the blockvector. */
4196 for (psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
4197 psym
< (objfile
->global_psymbols
.list
+ ps
->globals_offset
4198 + ps
->n_global_syms
);
4201 /* If interrupted, then quit. */
4203 COMPLETION_LIST_ADD_SYMBOL (*psym
, sym_text
, sym_text_len
, text
, word
);
4206 for (psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
4207 psym
< (objfile
->static_psymbols
.list
+ ps
->statics_offset
4208 + ps
->n_static_syms
);
4212 COMPLETION_LIST_ADD_SYMBOL (*psym
, sym_text
, sym_text_len
, text
, word
);
4216 /* At this point scan through the misc symbol vectors and add each
4217 symbol you find to the list. Eventually we want to ignore
4218 anything that isn't a text symbol (everything else will be
4219 handled by the psymtab code above). */
4221 ALL_MSYMBOLS (objfile
, msymbol
)
4224 COMPLETION_LIST_ADD_SYMBOL (msymbol
, sym_text
, sym_text_len
, text
, word
);
4227 /* Search upwards from currently selected frame (so that we can
4228 complete on local vars. */
4230 for (b
= get_selected_block (); b
!= NULL
; b
= BLOCK_SUPERBLOCK (b
))
4232 if (!BLOCK_SUPERBLOCK (b
))
4234 surrounding_static_block
= b
; /* For elmin of dups */
4237 /* Also catch fields of types defined in this places which match our
4238 text string. Only complete on types visible from current context. */
4240 for (i
= 0; i
< BLOCK_NSYMS (b
); i
++)
4242 sym
= BLOCK_SYM (b
, i
);
4243 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4244 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
4246 struct type
*t
= SYMBOL_TYPE (sym
);
4247 enum type_code c
= TYPE_CODE (t
);
4249 if (c
== TYPE_CODE_UNION
|| c
== TYPE_CODE_STRUCT
)
4251 for (j
= TYPE_N_BASECLASSES (t
); j
< TYPE_NFIELDS (t
); j
++)
4253 if (TYPE_FIELD_NAME (t
, j
))
4255 completion_list_add_name (TYPE_FIELD_NAME (t
, j
),
4256 sym_text
, sym_text_len
, text
, word
);
4264 /* Go through the symtabs and check the externs and statics for
4265 symbols which match. */
4267 ALL_SYMTABS (objfile
, s
)
4270 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
4271 for (i
= 0; i
< BLOCK_NSYMS (b
); i
++)
4273 sym
= BLOCK_SYM (b
, i
);
4274 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4278 ALL_SYMTABS (objfile
, s
)
4281 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
4282 /* Don't do this block twice. */
4283 if (b
== surrounding_static_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 return (return_val
);
4295 /* Determine if PC is in the prologue of a function. The prologue is the area
4296 between the first instruction of a function, and the first executable line.
4297 Returns 1 if PC *might* be in prologue, 0 if definately *not* in prologue.
4299 If non-zero, func_start is where we think the prologue starts, possibly
4300 by previous examination of symbol table information.
4304 in_prologue (CORE_ADDR pc
, CORE_ADDR func_start
)
4306 struct symtab_and_line sal
;
4307 CORE_ADDR func_addr
, func_end
;
4309 /* We have several sources of information we can consult to figure
4311 - Compilers usually emit line number info that marks the prologue
4312 as its own "source line". So the ending address of that "line"
4313 is the end of the prologue. If available, this is the most
4315 - The minimal symbols and partial symbols, which can usually tell
4316 us the starting and ending addresses of a function.
4317 - If we know the function's start address, we can call the
4318 architecture-defined SKIP_PROLOGUE function to analyze the
4319 instruction stream and guess where the prologue ends.
4320 - Our `func_start' argument; if non-zero, this is the caller's
4321 best guess as to the function's entry point. At the time of
4322 this writing, handle_inferior_event doesn't get this right, so
4323 it should be our last resort. */
4325 /* Consult the partial symbol table, to find which function
4327 if (! find_pc_partial_function (pc
, NULL
, &func_addr
, &func_end
))
4329 CORE_ADDR prologue_end
;
4331 /* We don't even have minsym information, so fall back to using
4332 func_start, if given. */
4334 return 1; /* We *might* be in a prologue. */
4336 prologue_end
= SKIP_PROLOGUE (func_start
);
4338 return func_start
<= pc
&& pc
< prologue_end
;
4341 /* If we have line number information for the function, that's
4342 usually pretty reliable. */
4343 sal
= find_pc_line (func_addr
, 0);
4345 /* Now sal describes the source line at the function's entry point,
4346 which (by convention) is the prologue. The end of that "line",
4347 sal.end, is the end of the prologue.
4349 Note that, for functions whose source code is all on a single
4350 line, the line number information doesn't always end up this way.
4351 So we must verify that our purported end-of-prologue address is
4352 *within* the function, not at its start or end. */
4354 || sal
.end
<= func_addr
4355 || func_end
<= sal
.end
)
4357 /* We don't have any good line number info, so use the minsym
4358 information, together with the architecture-specific prologue
4360 CORE_ADDR prologue_end
= SKIP_PROLOGUE (func_addr
);
4362 return func_addr
<= pc
&& pc
< prologue_end
;
4365 /* We have line number info, and it looks good. */
4366 return func_addr
<= pc
&& pc
< sal
.end
;
4370 /* Begin overload resolution functions */
4371 /* Helper routine for make_symbol_completion_list. */
4373 static int sym_return_val_size
;
4374 static int sym_return_val_index
;
4375 static struct symbol
**sym_return_val
;
4377 /* Test to see if the symbol specified by SYMNAME (which is already
4378 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
4379 characters. If so, add it to the current completion list. */
4382 overload_list_add_symbol (struct symbol
*sym
, char *oload_name
)
4387 /* Get the demangled name without parameters */
4388 char *sym_name
= cplus_demangle (SYMBOL_NAME (sym
), DMGL_ARM
| DMGL_ANSI
);
4391 sym_name
= (char *) xmalloc (strlen (SYMBOL_NAME (sym
)) + 1);
4392 strcpy (sym_name
, SYMBOL_NAME (sym
));
4395 /* skip symbols that cannot match */
4396 if (strcmp (sym_name
, oload_name
) != 0)
4402 /* If there is no type information, we can't do anything, so skip */
4403 if (SYMBOL_TYPE (sym
) == NULL
)
4406 /* skip any symbols that we've already considered. */
4407 for (i
= 0; i
< sym_return_val_index
; ++i
)
4408 if (!strcmp (SYMBOL_NAME (sym
), SYMBOL_NAME (sym_return_val
[i
])))
4411 /* We have a match for an overload instance, so add SYM to the current list
4412 * of overload instances */
4413 if (sym_return_val_index
+ 3 > sym_return_val_size
)
4415 newsize
= (sym_return_val_size
*= 2) * sizeof (struct symbol
*);
4416 sym_return_val
= (struct symbol
**) xrealloc ((char *) sym_return_val
, newsize
);
4418 sym_return_val
[sym_return_val_index
++] = sym
;
4419 sym_return_val
[sym_return_val_index
] = NULL
;
4424 /* Return a null-terminated list of pointers to function symbols that
4425 * match name of the supplied symbol FSYM.
4426 * This is used in finding all overloaded instances of a function name.
4427 * This has been modified from make_symbol_completion_list. */
4431 make_symbol_overload_list (struct symbol
*fsym
)
4433 register struct symbol
*sym
;
4434 register struct symtab
*s
;
4435 register struct partial_symtab
*ps
;
4436 register struct objfile
*objfile
;
4437 register struct block
*b
, *surrounding_static_block
= 0;
4439 /* The name we are completing on. */
4440 char *oload_name
= NULL
;
4441 /* Length of name. */
4442 int oload_name_len
= 0;
4444 /* Look for the symbol we are supposed to complete on.
4445 * FIXME: This should be language-specific. */
4447 oload_name
= cplus_demangle (SYMBOL_NAME (fsym
), DMGL_ARM
| DMGL_ANSI
);
4450 oload_name
= (char *) xmalloc (strlen (SYMBOL_NAME (fsym
)) + 1);
4451 strcpy (oload_name
, SYMBOL_NAME (fsym
));
4453 oload_name_len
= strlen (oload_name
);
4455 sym_return_val_size
= 100;
4456 sym_return_val_index
= 0;
4457 sym_return_val
= (struct symbol
**) xmalloc ((sym_return_val_size
+ 1) * sizeof (struct symbol
*));
4458 sym_return_val
[0] = NULL
;
4460 /* Look through the partial symtabs for all symbols which begin
4461 by matching OLOAD_NAME. Make sure we read that symbol table in. */
4463 ALL_PSYMTABS (objfile
, ps
)
4465 struct partial_symbol
**psym
;
4467 /* If the psymtab's been read in we'll get it when we search
4468 through the blockvector. */
4472 for (psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
4473 psym
< (objfile
->global_psymbols
.list
+ ps
->globals_offset
4474 + ps
->n_global_syms
);
4477 /* If interrupted, then quit. */
4479 /* This will cause the symbol table to be read if it has not yet been */
4480 s
= PSYMTAB_TO_SYMTAB (ps
);
4483 for (psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
4484 psym
< (objfile
->static_psymbols
.list
+ ps
->statics_offset
4485 + ps
->n_static_syms
);
4489 /* This will cause the symbol table to be read if it has not yet been */
4490 s
= PSYMTAB_TO_SYMTAB (ps
);
4494 /* Search upwards from currently selected frame (so that we can
4495 complete on local vars. */
4497 for (b
= get_selected_block (); b
!= NULL
; b
= BLOCK_SUPERBLOCK (b
))
4499 if (!BLOCK_SUPERBLOCK (b
))
4501 surrounding_static_block
= b
; /* For elimination of dups */
4504 /* Also catch fields of types defined in this places which match our
4505 text string. Only complete on types visible from current context. */
4507 for (i
= 0; i
< BLOCK_NSYMS (b
); i
++)
4509 sym
= BLOCK_SYM (b
, i
);
4510 overload_list_add_symbol (sym
, oload_name
);
4514 /* Go through the symtabs and check the externs and statics for
4515 symbols which match. */
4517 ALL_SYMTABS (objfile
, s
)
4520 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
4521 for (i
= 0; i
< BLOCK_NSYMS (b
); i
++)
4523 sym
= BLOCK_SYM (b
, i
);
4524 overload_list_add_symbol (sym
, oload_name
);
4528 ALL_SYMTABS (objfile
, s
)
4531 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
4532 /* Don't do this block twice. */
4533 if (b
== surrounding_static_block
)
4535 for (i
= 0; i
< BLOCK_NSYMS (b
); i
++)
4537 sym
= BLOCK_SYM (b
, i
);
4538 overload_list_add_symbol (sym
, oload_name
);
4544 return (sym_return_val
);
4547 /* End of overload resolution functions */
4551 _initialize_symtab (void)
4553 add_info ("variables", variables_info
,
4554 "All global and static variable names, or those matching REGEXP.");
4556 add_com ("whereis", class_info
, variables_info
,
4557 "All global and static variable names, or those matching REGEXP.");
4559 add_info ("functions", functions_info
,
4560 "All function names, or those matching REGEXP.");
4563 /* FIXME: This command has at least the following problems:
4564 1. It prints builtin types (in a very strange and confusing fashion).
4565 2. It doesn't print right, e.g. with
4566 typedef struct foo *FOO
4567 type_print prints "FOO" when we want to make it (in this situation)
4568 print "struct foo *".
4569 I also think "ptype" or "whatis" is more likely to be useful (but if
4570 there is much disagreement "info types" can be fixed). */
4571 add_info ("types", types_info
,
4572 "All type names, or those matching REGEXP.");
4575 add_info ("methods", methods_info
,
4576 "All method names, or those matching REGEXP::REGEXP.\n\
4577 If the class qualifier is omitted, it is assumed to be the current scope.\n\
4578 If the first REGEXP is omitted, then all methods matching the second REGEXP\n\
4581 add_info ("sources", sources_info
,
4582 "Source files in the program.");
4584 add_com ("rbreak", class_breakpoint
, rbreak_command
,
4585 "Set a breakpoint for all functions matching REGEXP.");
4589 add_com ("lf", class_info
, sources_info
, "Source files in the program");
4590 add_com ("lg", class_info
, variables_info
,
4591 "All global and static variable names, or those matching REGEXP.");
4594 /* Initialize the one built-in type that isn't language dependent... */
4595 builtin_type_error
= init_type (TYPE_CODE_ERROR
, 0, 0,
4596 "<unknown type>", (struct objfile
*) NULL
);