1 /* Symbol table lookup for the GNU debugger, GDB.
3 Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994,
4 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 Free Software
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 59 Temple Place - Suite 330,
22 Boston, MA 02111-1307, USA. */
34 #include "call-cmds.h"
35 #include "gdb_regex.h"
36 #include "expression.h"
41 #include "filenames.h" /* for FILENAME_CMP */
45 #include <sys/types.h>
47 #include "gdb_string.h"
52 /* Prototype for one function in parser-defs.h,
53 instead of including that entire file. */
55 extern char *find_template_name_end (char *);
57 /* Prototypes for local functions */
59 static void completion_list_add_name (char *, char *, int, char *, char *);
61 static void rbreak_command (char *, int);
63 static void types_info (char *, int);
65 static void functions_info (char *, int);
67 static void variables_info (char *, int);
69 static void sources_info (char *, int);
71 static void output_source_filename (char *, int *);
73 static int find_line_common (struct linetable
*, int, int *);
75 /* This one is used by linespec.c */
77 char *operator_chars (char *p
, char **end
);
79 static struct partial_symbol
*lookup_partial_symbol (struct partial_symtab
*,
83 static struct symbol
*lookup_symbol_aux (const char *name
, const
84 struct block
*block
, const
85 namespace_enum
namespace, int
86 *is_a_field_of_this
, struct
90 static struct symbol
*find_active_alias (struct symbol
*sym
, CORE_ADDR addr
);
92 /* This flag is used in hppa-tdep.c, and set in hp-symtab-read.c */
93 /* Signals the presence of objects compiled by HP compilers */
94 int hp_som_som_object_present
= 0;
96 static void fixup_section (struct general_symbol_info
*, struct objfile
*);
98 static int file_matches (char *, char **, int);
100 static void print_symbol_info (namespace_enum
,
101 struct symtab
*, struct symbol
*, int, char *);
103 static void print_msymbol_info (struct minimal_symbol
*);
105 static void symtab_symbol_info (char *, namespace_enum
, int);
107 static void overload_list_add_symbol (struct symbol
*sym
, char *oload_name
);
109 void _initialize_symtab (void);
113 /* The single non-language-specific builtin type */
114 struct type
*builtin_type_error
;
116 /* Block in which the most recently searched-for symbol was found.
117 Might be better to make this a parameter to lookup_symbol and
120 const struct block
*block_found
;
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. */
140 lookup_symtab (const char *name
)
142 register struct symtab
*s
;
143 register struct partial_symtab
*ps
;
144 register struct objfile
*objfile
;
145 char *real_path
= NULL
;
147 /* Here we are interested in canonicalizing an absolute path, not
148 absolutizing a relative path. */
149 if (IS_ABSOLUTE_PATH (name
))
150 real_path
= gdb_realpath (name
);
154 /* First, search for an exact match */
156 ALL_SYMTABS (objfile
, s
)
158 if (FILENAME_CMP (name
, s
->filename
) == 0)
163 /* If the user gave us an absolute path, try to find the file in
164 this symtab and use its absolute path. */
165 if (real_path
!= NULL
)
167 char *rp
= symtab_to_filename (s
);
168 if (FILENAME_CMP (real_path
, rp
) == 0)
178 /* Now, search for a matching tail (only if name doesn't have any dirs) */
180 if (lbasename (name
) == name
)
181 ALL_SYMTABS (objfile
, s
)
183 if (FILENAME_CMP (lbasename (s
->filename
), name
) == 0)
187 /* Same search rules as above apply here, but now we look thru the
190 ps
= lookup_partial_symtab (name
);
195 error ("Internal: readin %s pst for `%s' found when no symtab found.",
198 s
= PSYMTAB_TO_SYMTAB (ps
);
203 /* At this point, we have located the psymtab for this file, but
204 the conversion to a symtab has failed. This usually happens
205 when we are looking up an include file. In this case,
206 PSYMTAB_TO_SYMTAB doesn't return a symtab, even though one has
207 been created. So, we need to run through the symtabs again in
208 order to find the file.
209 XXX - This is a crock, and should be fixed inside of the the
210 symbol parsing routines. */
214 /* Lookup the partial symbol table of a source file named NAME.
215 *If* there is no '/' in the name, a match after a '/'
216 in the psymtab filename will also work. */
218 struct partial_symtab
*
219 lookup_partial_symtab (const char *name
)
221 register struct partial_symtab
*pst
;
222 register struct objfile
*objfile
;
223 char *real_path
= NULL
;
225 /* Here we are interested in canonicalizing an absolute path, not
226 absolutizing a relative path. */
227 if (IS_ABSOLUTE_PATH (name
))
228 real_path
= gdb_realpath (name
);
230 ALL_PSYMTABS (objfile
, pst
)
232 if (FILENAME_CMP (name
, pst
->filename
) == 0)
237 /* If the user gave us an absolute path, try to find the file in
238 this symtab and use its absolute path. */
239 if (real_path
!= NULL
)
241 if (pst
->fullname
== NULL
)
242 source_full_path_of (pst
->filename
, &pst
->fullname
);
243 if (pst
->fullname
!= NULL
244 && FILENAME_CMP (real_path
, pst
->fullname
) == 0)
254 /* Now, search for a matching tail (only if name doesn't have any dirs) */
256 if (lbasename (name
) == name
)
257 ALL_PSYMTABS (objfile
, pst
)
259 if (FILENAME_CMP (lbasename (pst
->filename
), name
) == 0)
266 /* Mangle a GDB method stub type. This actually reassembles the pieces of the
267 full method name, which consist of the class name (from T), the unadorned
268 method name from METHOD_ID, and the signature for the specific overload,
269 specified by SIGNATURE_ID. Note that this function is g++ specific. */
272 gdb_mangle_name (struct type
*type
, int method_id
, int signature_id
)
274 int mangled_name_len
;
276 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
277 struct fn_field
*method
= &f
[signature_id
];
278 char *field_name
= TYPE_FN_FIELDLIST_NAME (type
, method_id
);
279 char *physname
= TYPE_FN_FIELD_PHYSNAME (f
, signature_id
);
280 char *newname
= type_name_no_tag (type
);
282 /* Does the form of physname indicate that it is the full mangled name
283 of a constructor (not just the args)? */
284 int is_full_physname_constructor
;
287 int is_destructor
= is_destructor_name (physname
);
288 /* Need a new type prefix. */
289 char *const_prefix
= method
->is_const
? "C" : "";
290 char *volatile_prefix
= method
->is_volatile
? "V" : "";
292 int len
= (newname
== NULL
? 0 : strlen (newname
));
294 /* Nothing to do if physname already contains a fully mangled v3 abi name
295 or an operator name. */
296 if ((physname
[0] == '_' && physname
[1] == 'Z')
297 || is_operator_name (field_name
))
298 return xstrdup (physname
);
300 is_full_physname_constructor
= is_constructor_name (physname
);
303 is_full_physname_constructor
|| (newname
&& STREQ (field_name
, newname
));
306 is_destructor
= (strncmp (physname
, "__dt", 4) == 0);
308 if (is_destructor
|| is_full_physname_constructor
)
310 mangled_name
= (char *) xmalloc (strlen (physname
) + 1);
311 strcpy (mangled_name
, physname
);
317 sprintf (buf
, "__%s%s", const_prefix
, volatile_prefix
);
319 else if (physname
[0] == 't' || physname
[0] == 'Q')
321 /* The physname for template and qualified methods already includes
323 sprintf (buf
, "__%s%s", const_prefix
, volatile_prefix
);
329 sprintf (buf
, "__%s%s%d", const_prefix
, volatile_prefix
, len
);
331 mangled_name_len
= ((is_constructor
? 0 : strlen (field_name
))
332 + strlen (buf
) + len
+ strlen (physname
) + 1);
335 mangled_name
= (char *) xmalloc (mangled_name_len
);
337 mangled_name
[0] = '\0';
339 strcpy (mangled_name
, field_name
);
341 strcat (mangled_name
, buf
);
342 /* If the class doesn't have a name, i.e. newname NULL, then we just
343 mangle it using 0 for the length of the class. Thus it gets mangled
344 as something starting with `::' rather than `classname::'. */
346 strcat (mangled_name
, newname
);
348 strcat (mangled_name
, physname
);
349 return (mangled_name
);
354 /* Find which partial symtab on contains PC and SECTION. Return 0 if none. */
356 struct partial_symtab
*
357 find_pc_sect_psymtab (CORE_ADDR pc
, asection
*section
)
359 register struct partial_symtab
*pst
;
360 register struct objfile
*objfile
;
361 struct minimal_symbol
*msymbol
;
363 /* If we know that this is not a text address, return failure. This is
364 necessary because we loop based on texthigh and textlow, which do
365 not include the data ranges. */
366 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
368 && (msymbol
->type
== mst_data
369 || msymbol
->type
== mst_bss
370 || msymbol
->type
== mst_abs
371 || msymbol
->type
== mst_file_data
372 || msymbol
->type
== mst_file_bss
))
375 ALL_PSYMTABS (objfile
, pst
)
377 if (pc
>= pst
->textlow
&& pc
< pst
->texthigh
)
379 struct partial_symtab
*tpst
;
381 /* An objfile that has its functions reordered might have
382 many partial symbol tables containing the PC, but
383 we want the partial symbol table that contains the
384 function containing the PC. */
385 if (!(objfile
->flags
& OBJF_REORDERED
) &&
386 section
== 0) /* can't validate section this way */
392 for (tpst
= pst
; tpst
!= NULL
; tpst
= tpst
->next
)
394 if (pc
>= tpst
->textlow
&& pc
< tpst
->texthigh
)
396 struct partial_symbol
*p
;
398 p
= find_pc_sect_psymbol (tpst
, pc
, section
);
400 && SYMBOL_VALUE_ADDRESS (p
)
401 == SYMBOL_VALUE_ADDRESS (msymbol
))
411 /* Find which partial symtab contains PC. Return 0 if none.
412 Backward compatibility, no section */
414 struct partial_symtab
*
415 find_pc_psymtab (CORE_ADDR pc
)
417 return find_pc_sect_psymtab (pc
, find_pc_mapped_section (pc
));
420 /* Find which partial symbol within a psymtab matches PC and SECTION.
421 Return 0 if none. Check all psymtabs if PSYMTAB is 0. */
423 struct partial_symbol
*
424 find_pc_sect_psymbol (struct partial_symtab
*psymtab
, CORE_ADDR pc
,
427 struct partial_symbol
*best
= NULL
, *p
, **pp
;
431 psymtab
= find_pc_sect_psymtab (pc
, section
);
435 /* Cope with programs that start at address 0 */
436 best_pc
= (psymtab
->textlow
!= 0) ? psymtab
->textlow
- 1 : 0;
438 /* Search the global symbols as well as the static symbols, so that
439 find_pc_partial_function doesn't use a minimal symbol and thus
440 cache a bad endaddr. */
441 for (pp
= psymtab
->objfile
->global_psymbols
.list
+ psymtab
->globals_offset
;
442 (pp
- (psymtab
->objfile
->global_psymbols
.list
+ psymtab
->globals_offset
)
443 < psymtab
->n_global_syms
);
447 if (SYMBOL_NAMESPACE (p
) == VAR_NAMESPACE
448 && SYMBOL_CLASS (p
) == LOC_BLOCK
449 && pc
>= SYMBOL_VALUE_ADDRESS (p
)
450 && (SYMBOL_VALUE_ADDRESS (p
) > best_pc
451 || (psymtab
->textlow
== 0
452 && best_pc
== 0 && SYMBOL_VALUE_ADDRESS (p
) == 0)))
454 if (section
) /* match on a specific section */
456 fixup_psymbol_section (p
, psymtab
->objfile
);
457 if (SYMBOL_BFD_SECTION (p
) != section
)
460 best_pc
= SYMBOL_VALUE_ADDRESS (p
);
465 for (pp
= psymtab
->objfile
->static_psymbols
.list
+ psymtab
->statics_offset
;
466 (pp
- (psymtab
->objfile
->static_psymbols
.list
+ psymtab
->statics_offset
)
467 < psymtab
->n_static_syms
);
471 if (SYMBOL_NAMESPACE (p
) == VAR_NAMESPACE
472 && SYMBOL_CLASS (p
) == LOC_BLOCK
473 && pc
>= SYMBOL_VALUE_ADDRESS (p
)
474 && (SYMBOL_VALUE_ADDRESS (p
) > best_pc
475 || (psymtab
->textlow
== 0
476 && best_pc
== 0 && SYMBOL_VALUE_ADDRESS (p
) == 0)))
478 if (section
) /* match on a specific section */
480 fixup_psymbol_section (p
, psymtab
->objfile
);
481 if (SYMBOL_BFD_SECTION (p
) != section
)
484 best_pc
= SYMBOL_VALUE_ADDRESS (p
);
492 /* Find which partial symbol within a psymtab matches PC. Return 0 if none.
493 Check all psymtabs if PSYMTAB is 0. Backwards compatibility, no section. */
495 struct partial_symbol
*
496 find_pc_psymbol (struct partial_symtab
*psymtab
, CORE_ADDR pc
)
498 return find_pc_sect_psymbol (psymtab
, pc
, find_pc_mapped_section (pc
));
501 /* Debug symbols usually don't have section information. We need to dig that
502 out of the minimal symbols and stash that in the debug symbol. */
505 fixup_section (struct general_symbol_info
*ginfo
, struct objfile
*objfile
)
507 struct minimal_symbol
*msym
;
508 msym
= lookup_minimal_symbol (ginfo
->name
, NULL
, objfile
);
512 ginfo
->bfd_section
= SYMBOL_BFD_SECTION (msym
);
513 ginfo
->section
= SYMBOL_SECTION (msym
);
518 fixup_symbol_section (struct symbol
*sym
, struct objfile
*objfile
)
523 if (SYMBOL_BFD_SECTION (sym
))
526 fixup_section (&sym
->ginfo
, objfile
);
531 struct partial_symbol
*
532 fixup_psymbol_section (struct partial_symbol
*psym
, struct objfile
*objfile
)
537 if (SYMBOL_BFD_SECTION (psym
))
540 fixup_section (&psym
->ginfo
, objfile
);
545 /* Find the definition for a specified symbol name NAME
546 in namespace NAMESPACE, visible from lexical block BLOCK.
547 Returns the struct symbol pointer, or zero if no symbol is found.
548 If SYMTAB is non-NULL, store the symbol table in which the
549 symbol was found there, or NULL if not found.
550 C++: if IS_A_FIELD_OF_THIS is nonzero on entry, check to see if
551 NAME is a field of the current implied argument `this'. If so set
552 *IS_A_FIELD_OF_THIS to 1, otherwise set it to zero.
553 BLOCK_FOUND is set to the block in which NAME is found (in the case of
554 a field of `this', value_of_this sets BLOCK_FOUND to the proper value.) */
556 /* This function has a bunch of loops in it and it would seem to be
557 attractive to put in some QUIT's (though I'm not really sure
558 whether it can run long enough to be really important). But there
559 are a few calls for which it would appear to be bad news to quit
560 out of here: find_proc_desc in alpha-tdep.c and mips-tdep.c, and
561 nindy_frame_chain_valid in nindy-tdep.c. (Note that there is C++
562 code below which can error(), but that probably doesn't affect
563 these calls since they are looking for a known variable and thus
564 can probably assume it will never hit the C++ code). */
567 lookup_symbol (const char *name
, const struct block
*block
,
568 const namespace_enum
namespace, int *is_a_field_of_this
,
569 struct symtab
**symtab
)
571 char *modified_name
= NULL
;
572 char *modified_name2
= NULL
;
573 int needtofreename
= 0;
574 struct symbol
*returnval
;
576 if (case_sensitivity
== case_sensitive_off
)
582 copy
= (char *) alloca (len
+ 1);
583 for (i
= 0; i
< len
; i
++)
584 copy
[i
] = tolower (name
[i
]);
586 modified_name
= copy
;
589 modified_name
= (char *) name
;
591 /* If we are using C++ language, demangle the name before doing a lookup, so
592 we can always binary search. */
593 if (current_language
->la_language
== language_cplus
)
595 modified_name2
= cplus_demangle (modified_name
, DMGL_ANSI
| DMGL_PARAMS
);
598 modified_name
= modified_name2
;
603 returnval
= lookup_symbol_aux (modified_name
, block
, namespace,
604 is_a_field_of_this
, symtab
);
606 xfree (modified_name2
);
611 static struct symbol
*
612 lookup_symbol_aux (const char *name
, const struct block
*block
,
613 const namespace_enum
namespace, int *is_a_field_of_this
,
614 struct symtab
**symtab
)
616 register struct symbol
*sym
;
617 register struct symtab
*s
= NULL
;
618 register struct partial_symtab
*ps
;
619 register struct blockvector
*bv
;
620 register struct objfile
*objfile
= NULL
;
621 register struct block
*b
;
622 register struct minimal_symbol
*msymbol
;
625 /* Search specified block and its superiors. */
629 sym
= lookup_block_symbol (block
, name
, namespace);
635 /* Search the list of symtabs for one which contains the
636 address of the start of this block. */
637 ALL_SYMTABS (objfile
, s
)
639 bv
= BLOCKVECTOR (s
);
640 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
641 if (BLOCK_START (b
) <= BLOCK_START (block
)
642 && BLOCK_END (b
) > BLOCK_START (block
))
649 return fixup_symbol_section (sym
, objfile
);
651 block
= BLOCK_SUPERBLOCK (block
);
654 /* FIXME: this code is never executed--block is always NULL at this
655 point. What is it trying to do, anyway? We already should have
656 checked the STATIC_BLOCK above (it is the superblock of top-level
657 blocks). Why is VAR_NAMESPACE special-cased? */
658 /* Don't need to mess with the psymtabs; if we have a block,
659 that file is read in. If we don't, then we deal later with
660 all the psymtab stuff that needs checking. */
661 /* Note (RT): The following never-executed code looks unnecessary to me also.
662 * If we change the code to use the original (passed-in)
663 * value of 'block', we could cause it to execute, but then what
664 * would it do? The STATIC_BLOCK of the symtab containing the passed-in
665 * 'block' was already searched by the above code. And the STATIC_BLOCK's
666 * of *other* symtabs (those files not containing 'block' lexically)
667 * should not contain 'block' address-wise. So we wouldn't expect this
668 * code to find any 'sym''s that were not found above. I vote for
669 * deleting the following paragraph of code.
671 if (namespace == VAR_NAMESPACE
&& block
!= NULL
)
674 /* Find the right symtab. */
675 ALL_SYMTABS (objfile
, s
)
677 bv
= BLOCKVECTOR (s
);
678 b
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
679 if (BLOCK_START (b
) <= BLOCK_START (block
)
680 && BLOCK_END (b
) > BLOCK_START (block
))
682 sym
= lookup_block_symbol (b
, name
, VAR_NAMESPACE
);
688 return fixup_symbol_section (sym
, objfile
);
695 /* C++: If requested to do so by the caller,
696 check to see if NAME is a field of `this'. */
697 if (is_a_field_of_this
)
699 struct value
*v
= value_of_this (0);
701 *is_a_field_of_this
= 0;
702 if (v
&& check_field (v
, name
))
704 *is_a_field_of_this
= 1;
711 /* Now search all global blocks. Do the symtab's first, then
712 check the psymtab's. If a psymtab indicates the existence
713 of the desired name as a global, then do psymtab-to-symtab
714 conversion on the fly and return the found symbol. */
716 ALL_SYMTABS (objfile
, s
)
718 bv
= BLOCKVECTOR (s
);
719 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
720 sym
= lookup_block_symbol (block
, name
, namespace);
726 return fixup_symbol_section (sym
, objfile
);
732 /* Check for the possibility of the symbol being a function or
733 a mangled variable that is stored in one of the minimal symbol tables.
734 Eventually, all global symbols might be resolved in this way. */
736 if (namespace == VAR_NAMESPACE
)
738 msymbol
= lookup_minimal_symbol (name
, NULL
, NULL
);
741 s
= find_pc_sect_symtab (SYMBOL_VALUE_ADDRESS (msymbol
),
742 SYMBOL_BFD_SECTION (msymbol
));
745 /* This is a function which has a symtab for its address. */
746 bv
= BLOCKVECTOR (s
);
747 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
748 sym
= lookup_block_symbol (block
, SYMBOL_NAME (msymbol
),
750 /* We kept static functions in minimal symbol table as well as
751 in static scope. We want to find them in the symbol table. */
754 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
755 sym
= lookup_block_symbol (block
, SYMBOL_NAME (msymbol
),
759 /* sym == 0 if symbol was found in the minimal symbol table
760 but not in the symtab.
761 Return 0 to use the msymbol definition of "foo_".
763 This happens for Fortran "foo_" symbols,
764 which are "foo" in the symtab.
766 This can also happen if "asm" is used to make a
767 regular symbol but not a debugging symbol, e.g.
774 return fixup_symbol_section (sym
, objfile
);
776 else if (MSYMBOL_TYPE (msymbol
) != mst_text
777 && MSYMBOL_TYPE (msymbol
) != mst_file_text
778 && !STREQ (name
, SYMBOL_NAME (msymbol
)))
780 /* This is a mangled variable, look it up by its
782 return lookup_symbol_aux (SYMBOL_NAME (msymbol
), block
,
783 namespace, is_a_field_of_this
, symtab
);
785 /* There are no debug symbols for this file, or we are looking
786 for an unmangled variable.
787 Try to find a matching static symbol below. */
793 ALL_PSYMTABS (objfile
, ps
)
795 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, 1, namespace))
797 s
= PSYMTAB_TO_SYMTAB (ps
);
798 bv
= BLOCKVECTOR (s
);
799 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
800 sym
= lookup_block_symbol (block
, name
, namespace);
803 /* This shouldn't be necessary, but as a last resort
804 * try looking in the statics even though the psymtab
805 * claimed the symbol was global. It's possible that
806 * the psymtab gets it wrong in some cases.
808 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
809 sym
= lookup_block_symbol (block
, name
, namespace);
811 error ("Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\
812 %s may be an inlined function, or may be a template function\n\
813 (if a template, try specifying an instantiation: %s<type>).",
814 name
, ps
->filename
, name
, name
);
818 return fixup_symbol_section (sym
, objfile
);
822 /* Now search all static file-level symbols.
823 Not strictly correct, but more useful than an error.
824 Do the symtabs first, then check the psymtabs.
825 If a psymtab indicates the existence
826 of the desired name as a file-level static, then do psymtab-to-symtab
827 conversion on the fly and return the found symbol. */
829 ALL_SYMTABS (objfile
, s
)
831 bv
= BLOCKVECTOR (s
);
832 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
833 sym
= lookup_block_symbol (block
, name
, namespace);
839 return fixup_symbol_section (sym
, objfile
);
843 ALL_PSYMTABS (objfile
, ps
)
845 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, 0, namespace))
847 s
= PSYMTAB_TO_SYMTAB (ps
);
848 bv
= BLOCKVECTOR (s
);
849 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
850 sym
= lookup_block_symbol (block
, name
, namespace);
853 /* This shouldn't be necessary, but as a last resort
854 * try looking in the globals even though the psymtab
855 * claimed the symbol was static. It's possible that
856 * the psymtab gets it wrong in some cases.
858 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
859 sym
= lookup_block_symbol (block
, name
, namespace);
861 error ("Internal: static symbol `%s' found in %s psymtab but not in symtab.\n\
862 %s may be an inlined function, or may be a template function\n\
863 (if a template, try specifying an instantiation: %s<type>).",
864 name
, ps
->filename
, name
, name
);
868 return fixup_symbol_section (sym
, objfile
);
874 /* Check for the possibility of the symbol being a function or
875 a global variable that is stored in one of the minimal symbol tables.
876 The "minimal symbol table" is built from linker-supplied info.
878 RT: I moved this check to last, after the complete search of
879 the global (p)symtab's and static (p)symtab's. For HP-generated
880 symbol tables, this check was causing a premature exit from
881 lookup_symbol with NULL return, and thus messing up symbol lookups
882 of things like "c::f". It seems to me a check of the minimal
883 symbol table ought to be a last resort in any case. I'm vaguely
884 worried about the comment below which talks about FORTRAN routines "foo_"
885 though... is it saying we need to do the "minsym" check before
886 the static check in this case?
889 if (namespace == VAR_NAMESPACE
)
891 msymbol
= lookup_minimal_symbol (name
, NULL
, NULL
);
894 /* OK, we found a minimal symbol in spite of not
895 * finding any symbol. There are various possible
896 * explanations for this. One possibility is the symbol
897 * exists in code not compiled -g. Another possibility
898 * is that the 'psymtab' isn't doing its job.
899 * A third possibility, related to #2, is that we were confused
900 * by name-mangling. For instance, maybe the psymtab isn't
901 * doing its job because it only know about demangled
902 * names, but we were given a mangled name...
905 /* We first use the address in the msymbol to try to
906 * locate the appropriate symtab. Note that find_pc_symtab()
907 * has a side-effect of doing psymtab-to-symtab expansion,
908 * for the found symtab.
910 s
= find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
));
913 bv
= BLOCKVECTOR (s
);
914 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
915 sym
= lookup_block_symbol (block
, SYMBOL_NAME (msymbol
),
917 /* We kept static functions in minimal symbol table as well as
918 in static scope. We want to find them in the symbol table. */
921 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
922 sym
= lookup_block_symbol (block
, SYMBOL_NAME (msymbol
),
925 /* If we found one, return it */
933 /* If we get here with sym == 0, the symbol was
934 found in the minimal symbol table
935 but not in the symtab.
936 Fall through and return 0 to use the msymbol
937 definition of "foo_".
938 (Note that outer code generally follows up a call
939 to this routine with a call to lookup_minimal_symbol(),
940 so a 0 return means we'll just flow into that other routine).
942 This happens for Fortran "foo_" symbols,
943 which are "foo" in the symtab.
945 This can also happen if "asm" is used to make a
946 regular symbol but not a debugging symbol, e.g.
952 /* If the lookup-by-address fails, try repeating the
953 * entire lookup process with the symbol name from
954 * the msymbol (if different from the original symbol name).
956 else if (MSYMBOL_TYPE (msymbol
) != mst_text
957 && MSYMBOL_TYPE (msymbol
) != mst_file_text
958 && !STREQ (name
, SYMBOL_NAME (msymbol
)))
960 return lookup_symbol_aux (SYMBOL_NAME (msymbol
), block
,
961 namespace, is_a_field_of_this
, symtab
);
973 /* Look, in partial_symtab PST, for symbol NAME. Check the global
974 symbols if GLOBAL, the static symbols if not */
976 static struct partial_symbol
*
977 lookup_partial_symbol (struct partial_symtab
*pst
, const char *name
, int global
,
978 namespace_enum
namespace)
980 struct partial_symbol
*temp
;
981 struct partial_symbol
**start
, **psym
;
982 struct partial_symbol
**top
, **bottom
, **center
;
983 int length
= (global
? pst
->n_global_syms
: pst
->n_static_syms
);
984 int do_linear_search
= 1;
991 pst
->objfile
->global_psymbols
.list
+ pst
->globals_offset
:
992 pst
->objfile
->static_psymbols
.list
+ pst
->statics_offset
);
994 if (global
) /* This means we can use a binary search. */
996 do_linear_search
= 0;
998 /* Binary search. This search is guaranteed to end with center
999 pointing at the earliest partial symbol with the correct
1000 name. At that point *all* partial symbols with that name
1001 will be checked against the correct namespace. */
1004 top
= start
+ length
- 1;
1005 while (top
> bottom
)
1007 center
= bottom
+ (top
- bottom
) / 2;
1008 if (!(center
< top
))
1009 internal_error (__FILE__
, __LINE__
, "failed internal consistency check");
1010 if (!do_linear_search
1011 && (SYMBOL_LANGUAGE (*center
) == language_java
))
1013 do_linear_search
= 1;
1015 if (strcmp (SYMBOL_SOURCE_NAME (*center
), name
) >= 0)
1021 bottom
= center
+ 1;
1024 if (!(top
== bottom
))
1025 internal_error (__FILE__
, __LINE__
, "failed internal consistency check");
1027 /* djb - 2000-06-03 - Use SYMBOL_MATCHES_NAME, not a strcmp, so
1028 we don't have to force a linear search on C++. Probably holds true
1029 for JAVA as well, no way to check.*/
1030 while (SYMBOL_MATCHES_NAME (*top
,name
))
1032 if (SYMBOL_NAMESPACE (*top
) == namespace)
1040 /* Can't use a binary search or else we found during the binary search that
1041 we should also do a linear search. */
1043 if (do_linear_search
)
1045 for (psym
= start
; psym
< start
+ length
; psym
++)
1047 if (namespace == SYMBOL_NAMESPACE (*psym
))
1049 if (SYMBOL_MATCHES_NAME (*psym
, name
))
1060 /* Look up a type named NAME in the struct_namespace. The type returned
1061 must not be opaque -- i.e., must have at least one field defined
1063 This code was modelled on lookup_symbol -- the parts not relevant to looking
1064 up types were just left out. In particular it's assumed here that types
1065 are available in struct_namespace and only at file-static or global blocks. */
1069 lookup_transparent_type (const char *name
)
1071 register struct symbol
*sym
;
1072 register struct symtab
*s
= NULL
;
1073 register struct partial_symtab
*ps
;
1074 struct blockvector
*bv
;
1075 register struct objfile
*objfile
;
1076 register struct block
*block
;
1078 /* Now search all the global symbols. Do the symtab's first, then
1079 check the psymtab's. If a psymtab indicates the existence
1080 of the desired name as a global, then do psymtab-to-symtab
1081 conversion on the fly and return the found symbol. */
1083 ALL_SYMTABS (objfile
, s
)
1085 bv
= BLOCKVECTOR (s
);
1086 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1087 sym
= lookup_block_symbol (block
, name
, STRUCT_NAMESPACE
);
1088 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1090 return SYMBOL_TYPE (sym
);
1094 ALL_PSYMTABS (objfile
, ps
)
1096 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, 1, STRUCT_NAMESPACE
))
1098 s
= PSYMTAB_TO_SYMTAB (ps
);
1099 bv
= BLOCKVECTOR (s
);
1100 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1101 sym
= lookup_block_symbol (block
, name
, STRUCT_NAMESPACE
);
1104 /* This shouldn't be necessary, but as a last resort
1105 * try looking in the statics even though the psymtab
1106 * claimed the symbol was global. It's possible that
1107 * the psymtab gets it wrong in some cases.
1109 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1110 sym
= lookup_block_symbol (block
, name
, STRUCT_NAMESPACE
);
1112 error ("Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\
1113 %s may be an inlined function, or may be a template function\n\
1114 (if a template, try specifying an instantiation: %s<type>).",
1115 name
, ps
->filename
, name
, name
);
1117 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1118 return SYMBOL_TYPE (sym
);
1122 /* Now search the static file-level symbols.
1123 Not strictly correct, but more useful than an error.
1124 Do the symtab's first, then
1125 check the psymtab's. If a psymtab indicates the existence
1126 of the desired name as a file-level static, then do psymtab-to-symtab
1127 conversion on the fly and return the found symbol.
1130 ALL_SYMTABS (objfile
, s
)
1132 bv
= BLOCKVECTOR (s
);
1133 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1134 sym
= lookup_block_symbol (block
, name
, STRUCT_NAMESPACE
);
1135 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1137 return SYMBOL_TYPE (sym
);
1141 ALL_PSYMTABS (objfile
, ps
)
1143 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, 0, STRUCT_NAMESPACE
))
1145 s
= PSYMTAB_TO_SYMTAB (ps
);
1146 bv
= BLOCKVECTOR (s
);
1147 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1148 sym
= lookup_block_symbol (block
, name
, STRUCT_NAMESPACE
);
1151 /* This shouldn't be necessary, but as a last resort
1152 * try looking in the globals even though the psymtab
1153 * claimed the symbol was static. It's possible that
1154 * the psymtab gets it wrong in some cases.
1156 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1157 sym
= lookup_block_symbol (block
, name
, STRUCT_NAMESPACE
);
1159 error ("Internal: static symbol `%s' found in %s psymtab but not in symtab.\n\
1160 %s may be an inlined function, or may be a template function\n\
1161 (if a template, try specifying an instantiation: %s<type>).",
1162 name
, ps
->filename
, name
, name
);
1164 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1165 return SYMBOL_TYPE (sym
);
1168 return (struct type
*) 0;
1172 /* Find the psymtab containing main(). */
1173 /* FIXME: What about languages without main() or specially linked
1174 executables that have no main() ? */
1176 struct partial_symtab
*
1177 find_main_psymtab (void)
1179 register struct partial_symtab
*pst
;
1180 register struct objfile
*objfile
;
1182 ALL_PSYMTABS (objfile
, pst
)
1184 if (lookup_partial_symbol (pst
, main_name (), 1, VAR_NAMESPACE
))
1192 /* Search BLOCK for symbol NAME in NAMESPACE.
1194 Note that if NAME is the demangled form of a C++ symbol, we will fail
1195 to find a match during the binary search of the non-encoded names, but
1196 for now we don't worry about the slight inefficiency of looking for
1197 a match we'll never find, since it will go pretty quick. Once the
1198 binary search terminates, we drop through and do a straight linear
1199 search on the symbols. Each symbol which is marked as being a C++
1200 symbol (language_cplus set) has both the encoded and non-encoded names
1201 tested for a match. */
1204 lookup_block_symbol (register const struct block
*block
, const char *name
,
1205 const namespace_enum
namespace)
1207 register int bot
, top
, inc
;
1208 register struct symbol
*sym
;
1209 register struct symbol
*sym_found
= NULL
;
1210 register int do_linear_search
= 1;
1212 /* If the blocks's symbols were sorted, start with a binary search. */
1214 if (BLOCK_SHOULD_SORT (block
))
1216 /* Reset the linear search flag so if the binary search fails, we
1217 won't do the linear search once unless we find some reason to
1220 do_linear_search
= 0;
1221 top
= BLOCK_NSYMS (block
);
1224 /* Advance BOT to not far before the first symbol whose name is NAME. */
1228 inc
= (top
- bot
+ 1);
1229 /* No need to keep binary searching for the last few bits worth. */
1234 inc
= (inc
>> 1) + bot
;
1235 sym
= BLOCK_SYM (block
, inc
);
1236 if (!do_linear_search
&& (SYMBOL_LANGUAGE (sym
) == language_java
))
1238 do_linear_search
= 1;
1240 if (SYMBOL_SOURCE_NAME (sym
)[0] < name
[0])
1244 else if (SYMBOL_SOURCE_NAME (sym
)[0] > name
[0])
1248 else if (strcmp (SYMBOL_SOURCE_NAME (sym
), name
) < 0)
1258 /* Now scan forward until we run out of symbols, find one whose
1259 name is greater than NAME, or find one we want. If there is
1260 more than one symbol with the right name and namespace, we
1261 return the first one; I believe it is now impossible for us
1262 to encounter two symbols with the same name and namespace
1263 here, because blocks containing argument symbols are no
1266 top
= BLOCK_NSYMS (block
);
1269 sym
= BLOCK_SYM (block
, bot
);
1270 if (SYMBOL_NAMESPACE (sym
) == namespace &&
1271 SYMBOL_MATCHES_NAME (sym
, name
))
1275 if (SYMBOL_SOURCE_NAME (sym
)[0] > name
[0])
1283 /* Here if block isn't sorted, or we fail to find a match during the
1284 binary search above. If during the binary search above, we find a
1285 symbol which is a Java symbol, then we have re-enabled the linear
1286 search flag which was reset when starting the binary search.
1288 This loop is equivalent to the loop above, but hacked greatly for speed.
1290 Note that parameter symbols do not always show up last in the
1291 list; this loop makes sure to take anything else other than
1292 parameter symbols first; it only uses parameter symbols as a
1293 last resort. Note that this only takes up extra computation
1296 if (do_linear_search
)
1298 top
= BLOCK_NSYMS (block
);
1302 sym
= BLOCK_SYM (block
, bot
);
1303 if (SYMBOL_NAMESPACE (sym
) == namespace &&
1304 SYMBOL_MATCHES_NAME (sym
, name
))
1306 /* If SYM has aliases, then use any alias that is active
1307 at the current PC. If no alias is active at the current
1308 PC, then use the main symbol.
1310 ?!? Is checking the current pc correct? Is this routine
1311 ever called to look up a symbol from another context?
1313 FIXME: No, it's not correct. If someone sets a
1314 conditional breakpoint at an address, then the
1315 breakpoint's `struct expression' should refer to the
1316 `struct symbol' appropriate for the breakpoint's
1317 address, which may not be the PC.
1319 Even if it were never called from another context,
1320 it's totally bizarre for lookup_symbol's behavior to
1321 depend on the value of the inferior's current PC. We
1322 should pass in the appropriate PC as well as the
1323 block. The interface to lookup_symbol should change
1324 to require the caller to provide a PC. */
1326 if (SYMBOL_ALIASES (sym
))
1327 sym
= find_active_alias (sym
, read_pc ());
1330 if (SYMBOL_CLASS (sym
) != LOC_ARG
&&
1331 SYMBOL_CLASS (sym
) != LOC_LOCAL_ARG
&&
1332 SYMBOL_CLASS (sym
) != LOC_REF_ARG
&&
1333 SYMBOL_CLASS (sym
) != LOC_REGPARM
&&
1334 SYMBOL_CLASS (sym
) != LOC_REGPARM_ADDR
&&
1335 SYMBOL_CLASS (sym
) != LOC_BASEREG_ARG
)
1343 return (sym_found
); /* Will be NULL if not found. */
1346 /* Given a main symbol SYM and ADDR, search through the alias
1347 list to determine if an alias is active at ADDR and return
1350 If no alias is active, then return SYM. */
1352 static struct symbol
*
1353 find_active_alias (struct symbol
*sym
, CORE_ADDR addr
)
1355 struct range_list
*r
;
1356 struct alias_list
*aliases
;
1358 /* If we have aliases, check them first. */
1359 aliases
= SYMBOL_ALIASES (sym
);
1363 if (!SYMBOL_RANGES (aliases
->sym
))
1364 return aliases
->sym
;
1365 for (r
= SYMBOL_RANGES (aliases
->sym
); r
; r
= r
->next
)
1367 if (r
->start
<= addr
&& r
->end
> addr
)
1368 return aliases
->sym
;
1370 aliases
= aliases
->next
;
1373 /* Nothing found, return the main symbol. */
1378 /* Return the symbol for the function which contains a specified
1379 lexical block, described by a struct block BL. */
1382 block_function (struct block
*bl
)
1384 while (BLOCK_FUNCTION (bl
) == 0 && BLOCK_SUPERBLOCK (bl
) != 0)
1385 bl
= BLOCK_SUPERBLOCK (bl
);
1387 return BLOCK_FUNCTION (bl
);
1390 /* Find the symtab associated with PC and SECTION. Look through the
1391 psymtabs and read in another symtab if necessary. */
1394 find_pc_sect_symtab (CORE_ADDR pc
, asection
*section
)
1396 register struct block
*b
;
1397 struct blockvector
*bv
;
1398 register struct symtab
*s
= NULL
;
1399 register struct symtab
*best_s
= NULL
;
1400 register struct partial_symtab
*ps
;
1401 register struct objfile
*objfile
;
1402 CORE_ADDR distance
= 0;
1403 struct minimal_symbol
*msymbol
;
1405 /* If we know that this is not a text address, return failure. This is
1406 necessary because we loop based on the block's high and low code
1407 addresses, which do not include the data ranges, and because
1408 we call find_pc_sect_psymtab which has a similar restriction based
1409 on the partial_symtab's texthigh and textlow. */
1410 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
1412 && (msymbol
->type
== mst_data
1413 || msymbol
->type
== mst_bss
1414 || msymbol
->type
== mst_abs
1415 || msymbol
->type
== mst_file_data
1416 || msymbol
->type
== mst_file_bss
))
1419 /* Search all symtabs for the one whose file contains our address, and which
1420 is the smallest of all the ones containing the address. This is designed
1421 to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000
1422 and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from
1423 0x1000-0x4000, but for address 0x2345 we want to return symtab b.
1425 This happens for native ecoff format, where code from included files
1426 gets its own symtab. The symtab for the included file should have
1427 been read in already via the dependency mechanism.
1428 It might be swifter to create several symtabs with the same name
1429 like xcoff does (I'm not sure).
1431 It also happens for objfiles that have their functions reordered.
1432 For these, the symtab we are looking for is not necessarily read in. */
1434 ALL_SYMTABS (objfile
, s
)
1436 bv
= BLOCKVECTOR (s
);
1437 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1439 if (BLOCK_START (b
) <= pc
1440 && BLOCK_END (b
) > pc
1442 || BLOCK_END (b
) - BLOCK_START (b
) < distance
))
1444 /* For an objfile that has its functions reordered,
1445 find_pc_psymtab will find the proper partial symbol table
1446 and we simply return its corresponding symtab. */
1447 /* In order to better support objfiles that contain both
1448 stabs and coff debugging info, we continue on if a psymtab
1450 if ((objfile
->flags
& OBJF_REORDERED
) && objfile
->psymtabs
)
1452 ps
= find_pc_sect_psymtab (pc
, section
);
1454 return PSYMTAB_TO_SYMTAB (ps
);
1460 for (i
= 0; i
< b
->nsyms
; i
++)
1462 fixup_symbol_section (b
->sym
[i
], objfile
);
1463 if (section
== SYMBOL_BFD_SECTION (b
->sym
[i
]))
1467 continue; /* no symbol in this symtab matches section */
1469 distance
= BLOCK_END (b
) - BLOCK_START (b
);
1478 ps
= find_pc_sect_psymtab (pc
, section
);
1482 /* Might want to error() here (in case symtab is corrupt and
1483 will cause a core dump), but maybe we can successfully
1484 continue, so let's not. */
1486 (Internal error: pc 0x%s in read in psymtab, but not in symtab.)\n",
1488 s
= PSYMTAB_TO_SYMTAB (ps
);
1493 /* Find the symtab associated with PC. Look through the psymtabs and
1494 read in another symtab if necessary. Backward compatibility, no section */
1497 find_pc_symtab (CORE_ADDR pc
)
1499 return find_pc_sect_symtab (pc
, find_pc_mapped_section (pc
));
1505 /* Find the closest symbol value (of any sort -- function or variable)
1506 for a given address value. Slow but complete. (currently unused,
1507 mainly because it is too slow. We could fix it if each symtab and
1508 psymtab had contained in it the addresses ranges of each of its
1509 sections, which also would be required to make things like "info
1510 line *0x2345" cause psymtabs to be converted to symtabs). */
1513 find_addr_symbol (CORE_ADDR addr
, struct symtab
**symtabp
, CORE_ADDR
*symaddrp
)
1515 struct symtab
*symtab
, *best_symtab
;
1516 struct objfile
*objfile
;
1517 register int bot
, top
;
1518 register struct symbol
*sym
;
1519 register CORE_ADDR sym_addr
;
1520 struct block
*block
;
1523 /* Info on best symbol seen so far */
1525 register CORE_ADDR best_sym_addr
= 0;
1526 struct symbol
*best_sym
= 0;
1528 /* FIXME -- we should pull in all the psymtabs, too! */
1529 ALL_SYMTABS (objfile
, symtab
)
1531 /* Search the global and static blocks in this symtab for
1532 the closest symbol-address to the desired address. */
1534 for (blocknum
= GLOBAL_BLOCK
; blocknum
<= STATIC_BLOCK
; blocknum
++)
1537 block
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (symtab
), blocknum
);
1538 top
= BLOCK_NSYMS (block
);
1539 for (bot
= 0; bot
< top
; bot
++)
1541 sym
= BLOCK_SYM (block
, bot
);
1542 switch (SYMBOL_CLASS (sym
))
1546 sym_addr
= SYMBOL_VALUE_ADDRESS (sym
);
1550 sym_addr
= SYMBOL_VALUE_ADDRESS (sym
);
1551 /* An indirect symbol really lives at *sym_addr,
1552 * so an indirection needs to be done.
1553 * However, I am leaving this commented out because it's
1554 * expensive, and it's possible that symbolization
1555 * could be done without an active process (in
1556 * case this read_memory will fail). RT
1557 sym_addr = read_memory_unsigned_integer
1558 (sym_addr, TARGET_PTR_BIT / TARGET_CHAR_BIT);
1563 sym_addr
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
1570 if (sym_addr
<= addr
)
1571 if (sym_addr
> best_sym_addr
)
1573 /* Quit if we found an exact match. */
1575 best_sym_addr
= sym_addr
;
1576 best_symtab
= symtab
;
1577 if (sym_addr
== addr
)
1586 *symtabp
= best_symtab
;
1588 *symaddrp
= best_sym_addr
;
1593 /* Find the source file and line number for a given PC value and SECTION.
1594 Return a structure containing a symtab pointer, a line number,
1595 and a pc range for the entire source line.
1596 The value's .pc field is NOT the specified pc.
1597 NOTCURRENT nonzero means, if specified pc is on a line boundary,
1598 use the line that ends there. Otherwise, in that case, the line
1599 that begins there is used. */
1601 /* The big complication here is that a line may start in one file, and end just
1602 before the start of another file. This usually occurs when you #include
1603 code in the middle of a subroutine. To properly find the end of a line's PC
1604 range, we must search all symtabs associated with this compilation unit, and
1605 find the one whose first PC is closer than that of the next line in this
1608 /* If it's worth the effort, we could be using a binary search. */
1610 struct symtab_and_line
1611 find_pc_sect_line (CORE_ADDR pc
, struct sec
*section
, int notcurrent
)
1614 register struct linetable
*l
;
1617 register struct linetable_entry
*item
;
1618 struct symtab_and_line val
;
1619 struct blockvector
*bv
;
1620 struct minimal_symbol
*msymbol
;
1621 struct minimal_symbol
*mfunsym
;
1623 /* Info on best line seen so far, and where it starts, and its file. */
1625 struct linetable_entry
*best
= NULL
;
1626 CORE_ADDR best_end
= 0;
1627 struct symtab
*best_symtab
= 0;
1629 /* Store here the first line number
1630 of a file which contains the line at the smallest pc after PC.
1631 If we don't find a line whose range contains PC,
1632 we will use a line one less than this,
1633 with a range from the start of that file to the first line's pc. */
1634 struct linetable_entry
*alt
= NULL
;
1635 struct symtab
*alt_symtab
= 0;
1637 /* Info on best line seen in this file. */
1639 struct linetable_entry
*prev
;
1641 /* If this pc is not from the current frame,
1642 it is the address of the end of a call instruction.
1643 Quite likely that is the start of the following statement.
1644 But what we want is the statement containing the instruction.
1645 Fudge the pc to make sure we get that. */
1647 INIT_SAL (&val
); /* initialize to zeroes */
1649 /* It's tempting to assume that, if we can't find debugging info for
1650 any function enclosing PC, that we shouldn't search for line
1651 number info, either. However, GAS can emit line number info for
1652 assembly files --- very helpful when debugging hand-written
1653 assembly code. In such a case, we'd have no debug info for the
1654 function, but we would have line info. */
1659 /* elz: added this because this function returned the wrong
1660 information if the pc belongs to a stub (import/export)
1661 to call a shlib function. This stub would be anywhere between
1662 two functions in the target, and the line info was erroneously
1663 taken to be the one of the line before the pc.
1665 /* RT: Further explanation:
1667 * We have stubs (trampolines) inserted between procedures.
1669 * Example: "shr1" exists in a shared library, and a "shr1" stub also
1670 * exists in the main image.
1672 * In the minimal symbol table, we have a bunch of symbols
1673 * sorted by start address. The stubs are marked as "trampoline",
1674 * the others appear as text. E.g.:
1676 * Minimal symbol table for main image
1677 * main: code for main (text symbol)
1678 * shr1: stub (trampoline symbol)
1679 * foo: code for foo (text symbol)
1681 * Minimal symbol table for "shr1" image:
1683 * shr1: code for shr1 (text symbol)
1686 * So the code below is trying to detect if we are in the stub
1687 * ("shr1" stub), and if so, find the real code ("shr1" trampoline),
1688 * and if found, do the symbolization from the real-code address
1689 * rather than the stub address.
1691 * Assumptions being made about the minimal symbol table:
1692 * 1. lookup_minimal_symbol_by_pc() will return a trampoline only
1693 * if we're really in the trampoline. If we're beyond it (say
1694 * we're in "foo" in the above example), it'll have a closer
1695 * symbol (the "foo" text symbol for example) and will not
1696 * return the trampoline.
1697 * 2. lookup_minimal_symbol_text() will find a real text symbol
1698 * corresponding to the trampoline, and whose address will
1699 * be different than the trampoline address. I put in a sanity
1700 * check for the address being the same, to avoid an
1701 * infinite recursion.
1703 msymbol
= lookup_minimal_symbol_by_pc (pc
);
1704 if (msymbol
!= NULL
)
1705 if (MSYMBOL_TYPE (msymbol
) == mst_solib_trampoline
)
1707 mfunsym
= lookup_minimal_symbol_text (SYMBOL_NAME (msymbol
), NULL
, NULL
);
1708 if (mfunsym
== NULL
)
1709 /* I eliminated this warning since it is coming out
1710 * in the following situation:
1711 * gdb shmain // test program with shared libraries
1712 * (gdb) break shr1 // function in shared lib
1713 * Warning: In stub for ...
1714 * In the above situation, the shared lib is not loaded yet,
1715 * so of course we can't find the real func/line info,
1716 * but the "break" still works, and the warning is annoying.
1717 * So I commented out the warning. RT */
1718 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_NAME(msymbol)) */ ;
1720 else if (SYMBOL_VALUE (mfunsym
) == SYMBOL_VALUE (msymbol
))
1721 /* Avoid infinite recursion */
1722 /* See above comment about why warning is commented out */
1723 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_NAME(msymbol)) */ ;
1726 return find_pc_line (SYMBOL_VALUE (mfunsym
), 0);
1730 s
= find_pc_sect_symtab (pc
, section
);
1733 /* if no symbol information, return previous pc */
1740 bv
= BLOCKVECTOR (s
);
1742 /* Look at all the symtabs that share this blockvector.
1743 They all have the same apriori range, that we found was right;
1744 but they have different line tables. */
1746 for (; s
&& BLOCKVECTOR (s
) == bv
; s
= s
->next
)
1748 /* Find the best line in this symtab. */
1755 /* I think len can be zero if the symtab lacks line numbers
1756 (e.g. gcc -g1). (Either that or the LINETABLE is NULL;
1757 I'm not sure which, and maybe it depends on the symbol
1763 item
= l
->item
; /* Get first line info */
1765 /* Is this file's first line closer than the first lines of other files?
1766 If so, record this file, and its first line, as best alternate. */
1767 if (item
->pc
> pc
&& (!alt
|| item
->pc
< alt
->pc
))
1773 for (i
= 0; i
< len
; i
++, item
++)
1775 /* Leave prev pointing to the linetable entry for the last line
1776 that started at or before PC. */
1783 /* At this point, prev points at the line whose start addr is <= pc, and
1784 item points at the next line. If we ran off the end of the linetable
1785 (pc >= start of the last line), then prev == item. If pc < start of
1786 the first line, prev will not be set. */
1788 /* Is this file's best line closer than the best in the other files?
1789 If so, record this file, and its best line, as best so far. */
1791 if (prev
&& (!best
|| prev
->pc
> best
->pc
))
1796 /* Discard BEST_END if it's before the PC of the current BEST. */
1797 if (best_end
<= best
->pc
)
1801 /* If another line (denoted by ITEM) is in the linetable and its
1802 PC is after BEST's PC, but before the current BEST_END, then
1803 use ITEM's PC as the new best_end. */
1804 if (best
&& i
< len
&& item
->pc
> best
->pc
1805 && (best_end
== 0 || best_end
> item
->pc
))
1806 best_end
= item
->pc
;
1812 { /* If we didn't find any line # info, just
1818 val
.symtab
= alt_symtab
;
1819 val
.line
= alt
->line
- 1;
1821 /* Don't return line 0, that means that we didn't find the line. */
1825 val
.pc
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
1829 else if (best
->line
== 0)
1831 /* If our best fit is in a range of PC's for which no line
1832 number info is available (line number is zero) then we didn't
1833 find any valid line information. */
1838 val
.symtab
= best_symtab
;
1839 val
.line
= best
->line
;
1841 if (best_end
&& (!alt
|| best_end
< alt
->pc
))
1846 val
.end
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
1848 val
.section
= section
;
1852 /* Backward compatibility (no section) */
1854 struct symtab_and_line
1855 find_pc_line (CORE_ADDR pc
, int notcurrent
)
1859 section
= find_pc_overlay (pc
);
1860 if (pc_in_unmapped_range (pc
, section
))
1861 pc
= overlay_mapped_address (pc
, section
);
1862 return find_pc_sect_line (pc
, section
, notcurrent
);
1865 /* Find line number LINE in any symtab whose name is the same as
1868 If found, return the symtab that contains the linetable in which it was
1869 found, set *INDEX to the index in the linetable of the best entry
1870 found, and set *EXACT_MATCH nonzero if the value returned is an
1873 If not found, return NULL. */
1876 find_line_symtab (struct symtab
*symtab
, int line
, int *index
, int *exact_match
)
1880 /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE
1884 struct linetable
*best_linetable
;
1885 struct symtab
*best_symtab
;
1887 /* First try looking it up in the given symtab. */
1888 best_linetable
= LINETABLE (symtab
);
1889 best_symtab
= symtab
;
1890 best_index
= find_line_common (best_linetable
, line
, &exact
);
1891 if (best_index
< 0 || !exact
)
1893 /* Didn't find an exact match. So we better keep looking for
1894 another symtab with the same name. In the case of xcoff,
1895 multiple csects for one source file (produced by IBM's FORTRAN
1896 compiler) produce multiple symtabs (this is unavoidable
1897 assuming csects can be at arbitrary places in memory and that
1898 the GLOBAL_BLOCK of a symtab has a begin and end address). */
1900 /* BEST is the smallest linenumber > LINE so far seen,
1901 or 0 if none has been seen so far.
1902 BEST_INDEX and BEST_LINETABLE identify the item for it. */
1905 struct objfile
*objfile
;
1908 if (best_index
>= 0)
1909 best
= best_linetable
->item
[best_index
].line
;
1913 ALL_SYMTABS (objfile
, s
)
1915 struct linetable
*l
;
1918 if (!STREQ (symtab
->filename
, s
->filename
))
1921 ind
= find_line_common (l
, line
, &exact
);
1931 if (best
== 0 || l
->item
[ind
].line
< best
)
1933 best
= l
->item
[ind
].line
;
1946 *index
= best_index
;
1948 *exact_match
= exact
;
1953 /* Set the PC value for a given source file and line number and return true.
1954 Returns zero for invalid line number (and sets the PC to 0).
1955 The source file is specified with a struct symtab. */
1958 find_line_pc (struct symtab
*symtab
, int line
, CORE_ADDR
*pc
)
1960 struct linetable
*l
;
1967 symtab
= find_line_symtab (symtab
, line
, &ind
, NULL
);
1970 l
= LINETABLE (symtab
);
1971 *pc
= l
->item
[ind
].pc
;
1978 /* Find the range of pc values in a line.
1979 Store the starting pc of the line into *STARTPTR
1980 and the ending pc (start of next line) into *ENDPTR.
1981 Returns 1 to indicate success.
1982 Returns 0 if could not find the specified line. */
1985 find_line_pc_range (struct symtab_and_line sal
, CORE_ADDR
*startptr
,
1988 CORE_ADDR startaddr
;
1989 struct symtab_and_line found_sal
;
1992 if (startaddr
== 0 && !find_line_pc (sal
.symtab
, sal
.line
, &startaddr
))
1995 /* This whole function is based on address. For example, if line 10 has
1996 two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then
1997 "info line *0x123" should say the line goes from 0x100 to 0x200
1998 and "info line *0x355" should say the line goes from 0x300 to 0x400.
1999 This also insures that we never give a range like "starts at 0x134
2000 and ends at 0x12c". */
2002 found_sal
= find_pc_sect_line (startaddr
, sal
.section
, 0);
2003 if (found_sal
.line
!= sal
.line
)
2005 /* The specified line (sal) has zero bytes. */
2006 *startptr
= found_sal
.pc
;
2007 *endptr
= found_sal
.pc
;
2011 *startptr
= found_sal
.pc
;
2012 *endptr
= found_sal
.end
;
2017 /* Given a line table and a line number, return the index into the line
2018 table for the pc of the nearest line whose number is >= the specified one.
2019 Return -1 if none is found. The value is >= 0 if it is an index.
2021 Set *EXACT_MATCH nonzero if the value returned is an exact match. */
2024 find_line_common (register struct linetable
*l
, register int lineno
,
2030 /* BEST is the smallest linenumber > LINENO so far seen,
2031 or 0 if none has been seen so far.
2032 BEST_INDEX identifies the item for it. */
2034 int best_index
= -1;
2043 for (i
= 0; i
< len
; i
++)
2045 register struct linetable_entry
*item
= &(l
->item
[i
]);
2047 if (item
->line
== lineno
)
2049 /* Return the first (lowest address) entry which matches. */
2054 if (item
->line
> lineno
&& (best
== 0 || item
->line
< best
))
2061 /* If we got here, we didn't get an exact match. */
2068 find_pc_line_pc_range (CORE_ADDR pc
, CORE_ADDR
*startptr
, CORE_ADDR
*endptr
)
2070 struct symtab_and_line sal
;
2071 sal
= find_pc_line (pc
, 0);
2074 return sal
.symtab
!= 0;
2077 /* Given a function symbol SYM, find the symtab and line for the start
2079 If the argument FUNFIRSTLINE is nonzero, we want the first line
2080 of real code inside the function. */
2082 struct symtab_and_line
2083 find_function_start_sal (struct symbol
*sym
, int funfirstline
)
2086 struct symtab_and_line sal
;
2088 pc
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
2089 fixup_symbol_section (sym
, NULL
);
2091 { /* skip "first line" of function (which is actually its prologue) */
2092 asection
*section
= SYMBOL_BFD_SECTION (sym
);
2093 /* If function is in an unmapped overlay, use its unmapped LMA
2094 address, so that SKIP_PROLOGUE has something unique to work on */
2095 if (section_is_overlay (section
) &&
2096 !section_is_mapped (section
))
2097 pc
= overlay_unmapped_address (pc
, section
);
2099 pc
+= FUNCTION_START_OFFSET
;
2100 pc
= SKIP_PROLOGUE (pc
);
2102 /* For overlays, map pc back into its mapped VMA range */
2103 pc
= overlay_mapped_address (pc
, section
);
2105 sal
= find_pc_sect_line (pc
, SYMBOL_BFD_SECTION (sym
), 0);
2107 #ifdef PROLOGUE_FIRSTLINE_OVERLAP
2108 /* Convex: no need to suppress code on first line, if any */
2111 /* Check if SKIP_PROLOGUE left us in mid-line, and the next
2112 line is still part of the same function. */
2114 && BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)) <= sal
.end
2115 && sal
.end
< BLOCK_END (SYMBOL_BLOCK_VALUE (sym
)))
2117 /* First pc of next line */
2119 /* Recalculate the line number (might not be N+1). */
2120 sal
= find_pc_sect_line (pc
, SYMBOL_BFD_SECTION (sym
), 0);
2128 /* If P is of the form "operator[ \t]+..." where `...' is
2129 some legitimate operator text, return a pointer to the
2130 beginning of the substring of the operator text.
2131 Otherwise, return "". */
2133 operator_chars (char *p
, char **end
)
2136 if (strncmp (p
, "operator", 8))
2140 /* Don't get faked out by `operator' being part of a longer
2142 if (isalpha (*p
) || *p
== '_' || *p
== '$' || *p
== '\0')
2145 /* Allow some whitespace between `operator' and the operator symbol. */
2146 while (*p
== ' ' || *p
== '\t')
2149 /* Recognize 'operator TYPENAME'. */
2151 if (isalpha (*p
) || *p
== '_' || *p
== '$')
2153 register char *q
= p
+ 1;
2154 while (isalnum (*q
) || *q
== '_' || *q
== '$')
2163 case '\\': /* regexp quoting */
2166 if (p
[2] == '=') /* 'operator\*=' */
2168 else /* 'operator\*' */
2172 else if (p
[1] == '[')
2175 error ("mismatched quoting on brackets, try 'operator\\[\\]'");
2176 else if (p
[2] == '\\' && p
[3] == ']')
2178 *end
= p
+ 4; /* 'operator\[\]' */
2182 error ("nothing is allowed between '[' and ']'");
2186 /* Gratuitous qoute: skip it and move on. */
2208 if (p
[0] == '-' && p
[1] == '>')
2210 /* Struct pointer member operator 'operator->'. */
2213 *end
= p
+ 3; /* 'operator->*' */
2216 else if (p
[2] == '\\')
2218 *end
= p
+ 4; /* Hopefully 'operator->\*' */
2223 *end
= p
+ 2; /* 'operator->' */
2227 if (p
[1] == '=' || p
[1] == p
[0])
2238 error ("`operator ()' must be specified without whitespace in `()'");
2243 error ("`operator ?:' must be specified without whitespace in `?:'");
2248 error ("`operator []' must be specified without whitespace in `[]'");
2252 error ("`operator %s' not supported", p
);
2261 /* If FILE is not already in the table of files, return zero;
2262 otherwise return non-zero. Optionally add FILE to the table if ADD
2263 is non-zero. If *FIRST is non-zero, forget the old table
2266 filename_seen (const char *file
, int add
, int *first
)
2268 /* Table of files seen so far. */
2269 static const char **tab
= NULL
;
2270 /* Allocated size of tab in elements.
2271 Start with one 256-byte block (when using GNU malloc.c).
2272 24 is the malloc overhead when range checking is in effect. */
2273 static int tab_alloc_size
= (256 - 24) / sizeof (char *);
2274 /* Current size of tab in elements. */
2275 static int tab_cur_size
;
2281 tab
= (const char **) xmalloc (tab_alloc_size
* sizeof (*tab
));
2285 /* Is FILE in tab? */
2286 for (p
= tab
; p
< tab
+ tab_cur_size
; p
++)
2287 if (strcmp (*p
, file
) == 0)
2290 /* No; maybe add it to tab. */
2293 if (tab_cur_size
== tab_alloc_size
)
2295 tab_alloc_size
*= 2;
2296 tab
= (const char **) xrealloc ((char *) tab
,
2297 tab_alloc_size
* sizeof (*tab
));
2299 tab
[tab_cur_size
++] = file
;
2305 /* Slave routine for sources_info. Force line breaks at ,'s.
2306 NAME is the name to print and *FIRST is nonzero if this is the first
2307 name printed. Set *FIRST to zero. */
2309 output_source_filename (char *name
, int *first
)
2311 /* Since a single source file can result in several partial symbol
2312 tables, we need to avoid printing it more than once. Note: if
2313 some of the psymtabs are read in and some are not, it gets
2314 printed both under "Source files for which symbols have been
2315 read" and "Source files for which symbols will be read in on
2316 demand". I consider this a reasonable way to deal with the
2317 situation. I'm not sure whether this can also happen for
2318 symtabs; it doesn't hurt to check. */
2320 /* Was NAME already seen? */
2321 if (filename_seen (name
, 1, first
))
2323 /* Yes; don't print it again. */
2326 /* No; print it and reset *FIRST. */
2333 printf_filtered (", ");
2337 fputs_filtered (name
, gdb_stdout
);
2341 sources_info (char *ignore
, int from_tty
)
2343 register struct symtab
*s
;
2344 register struct partial_symtab
*ps
;
2345 register struct objfile
*objfile
;
2348 if (!have_full_symbols () && !have_partial_symbols ())
2350 error ("No symbol table is loaded. Use the \"file\" command.");
2353 printf_filtered ("Source files for which symbols have been read in:\n\n");
2356 ALL_SYMTABS (objfile
, s
)
2358 output_source_filename (s
->filename
, &first
);
2360 printf_filtered ("\n\n");
2362 printf_filtered ("Source files for which symbols will be read in on demand:\n\n");
2365 ALL_PSYMTABS (objfile
, ps
)
2369 output_source_filename (ps
->filename
, &first
);
2372 printf_filtered ("\n");
2376 file_matches (char *file
, char *files
[], int nfiles
)
2380 if (file
!= NULL
&& nfiles
!= 0)
2382 for (i
= 0; i
< nfiles
; i
++)
2384 if (strcmp (files
[i
], lbasename (file
)) == 0)
2388 else if (nfiles
== 0)
2393 /* Free any memory associated with a search. */
2395 free_search_symbols (struct symbol_search
*symbols
)
2397 struct symbol_search
*p
;
2398 struct symbol_search
*next
;
2400 for (p
= symbols
; p
!= NULL
; p
= next
)
2408 do_free_search_symbols_cleanup (void *symbols
)
2410 free_search_symbols (symbols
);
2414 make_cleanup_free_search_symbols (struct symbol_search
*symbols
)
2416 return make_cleanup (do_free_search_symbols_cleanup
, symbols
);
2419 /* Helper function for sort_search_symbols and qsort. Can only
2420 sort symbols, not minimal symbols. */
2422 compare_search_syms (const void *sa
, const void *sb
)
2424 struct symbol_search
**sym_a
= (struct symbol_search
**) sa
;
2425 struct symbol_search
**sym_b
= (struct symbol_search
**) sb
;
2427 return strcmp (SYMBOL_SOURCE_NAME ((*sym_a
)->symbol
),
2428 SYMBOL_SOURCE_NAME ((*sym_b
)->symbol
));
2431 /* Sort the ``nfound'' symbols in the list after prevtail. Leave
2432 prevtail where it is, but update its next pointer to point to
2433 the first of the sorted symbols. */
2434 static struct symbol_search
*
2435 sort_search_symbols (struct symbol_search
*prevtail
, int nfound
)
2437 struct symbol_search
**symbols
, *symp
, *old_next
;
2440 symbols
= (struct symbol_search
**) xmalloc (sizeof (struct symbol_search
*)
2442 symp
= prevtail
->next
;
2443 for (i
= 0; i
< nfound
; i
++)
2448 /* Generally NULL. */
2451 qsort (symbols
, nfound
, sizeof (struct symbol_search
*),
2452 compare_search_syms
);
2455 for (i
= 0; i
< nfound
; i
++)
2457 symp
->next
= symbols
[i
];
2460 symp
->next
= old_next
;
2466 /* Search the symbol table for matches to the regular expression REGEXP,
2467 returning the results in *MATCHES.
2469 Only symbols of KIND are searched:
2470 FUNCTIONS_NAMESPACE - search all functions
2471 TYPES_NAMESPACE - search all type names
2472 METHODS_NAMESPACE - search all methods NOT IMPLEMENTED
2473 VARIABLES_NAMESPACE - search all symbols, excluding functions, type names,
2474 and constants (enums)
2476 free_search_symbols should be called when *MATCHES is no longer needed.
2478 The results are sorted locally; each symtab's global and static blocks are
2479 separately alphabetized.
2482 search_symbols (char *regexp
, namespace_enum kind
, int nfiles
, char *files
[],
2483 struct symbol_search
**matches
)
2485 register struct symtab
*s
;
2486 register struct partial_symtab
*ps
;
2487 register struct blockvector
*bv
;
2488 struct blockvector
*prev_bv
= 0;
2489 register struct block
*b
;
2492 register struct symbol
*sym
;
2493 struct partial_symbol
**psym
;
2494 struct objfile
*objfile
;
2495 struct minimal_symbol
*msymbol
;
2498 static enum minimal_symbol_type types
[]
2500 {mst_data
, mst_text
, mst_abs
, mst_unknown
};
2501 static enum minimal_symbol_type types2
[]
2503 {mst_bss
, mst_file_text
, mst_abs
, mst_unknown
};
2504 static enum minimal_symbol_type types3
[]
2506 {mst_file_data
, mst_solib_trampoline
, mst_abs
, mst_unknown
};
2507 static enum minimal_symbol_type types4
[]
2509 {mst_file_bss
, mst_text
, mst_abs
, mst_unknown
};
2510 enum minimal_symbol_type ourtype
;
2511 enum minimal_symbol_type ourtype2
;
2512 enum minimal_symbol_type ourtype3
;
2513 enum minimal_symbol_type ourtype4
;
2514 struct symbol_search
*sr
;
2515 struct symbol_search
*psr
;
2516 struct symbol_search
*tail
;
2517 struct cleanup
*old_chain
= NULL
;
2519 if (kind
< VARIABLES_NAMESPACE
)
2520 error ("must search on specific namespace");
2522 ourtype
= types
[(int) (kind
- VARIABLES_NAMESPACE
)];
2523 ourtype2
= types2
[(int) (kind
- VARIABLES_NAMESPACE
)];
2524 ourtype3
= types3
[(int) (kind
- VARIABLES_NAMESPACE
)];
2525 ourtype4
= types4
[(int) (kind
- VARIABLES_NAMESPACE
)];
2527 sr
= *matches
= NULL
;
2532 /* Make sure spacing is right for C++ operators.
2533 This is just a courtesy to make the matching less sensitive
2534 to how many spaces the user leaves between 'operator'
2535 and <TYPENAME> or <OPERATOR>. */
2537 char *opname
= operator_chars (regexp
, &opend
);
2540 int fix
= -1; /* -1 means ok; otherwise number of spaces needed. */
2541 if (isalpha (*opname
) || *opname
== '_' || *opname
== '$')
2543 /* There should 1 space between 'operator' and 'TYPENAME'. */
2544 if (opname
[-1] != ' ' || opname
[-2] == ' ')
2549 /* There should 0 spaces between 'operator' and 'OPERATOR'. */
2550 if (opname
[-1] == ' ')
2553 /* If wrong number of spaces, fix it. */
2556 char *tmp
= (char *) alloca (8 + fix
+ strlen (opname
) + 1);
2557 sprintf (tmp
, "operator%.*s%s", fix
, " ", opname
);
2562 if (0 != (val
= re_comp (regexp
)))
2563 error ("Invalid regexp (%s): %s", val
, regexp
);
2566 /* Search through the partial symtabs *first* for all symbols
2567 matching the regexp. That way we don't have to reproduce all of
2568 the machinery below. */
2570 ALL_PSYMTABS (objfile
, ps
)
2572 struct partial_symbol
**bound
, **gbound
, **sbound
;
2578 gbound
= objfile
->global_psymbols
.list
+ ps
->globals_offset
+ ps
->n_global_syms
;
2579 sbound
= objfile
->static_psymbols
.list
+ ps
->statics_offset
+ ps
->n_static_syms
;
2582 /* Go through all of the symbols stored in a partial
2583 symtab in one loop. */
2584 psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
2589 if (bound
== gbound
&& ps
->n_static_syms
!= 0)
2591 psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
2602 /* If it would match (logic taken from loop below)
2603 load the file and go on to the next one */
2604 if (file_matches (ps
->filename
, files
, nfiles
)
2605 && ((regexp
== NULL
|| SYMBOL_MATCHES_REGEXP (*psym
))
2606 && ((kind
== VARIABLES_NAMESPACE
&& SYMBOL_CLASS (*psym
) != LOC_TYPEDEF
2607 && SYMBOL_CLASS (*psym
) != LOC_BLOCK
)
2608 || (kind
== FUNCTIONS_NAMESPACE
&& SYMBOL_CLASS (*psym
) == LOC_BLOCK
)
2609 || (kind
== TYPES_NAMESPACE
&& SYMBOL_CLASS (*psym
) == LOC_TYPEDEF
)
2610 || (kind
== METHODS_NAMESPACE
&& SYMBOL_CLASS (*psym
) == LOC_BLOCK
))))
2612 PSYMTAB_TO_SYMTAB (ps
);
2620 /* Here, we search through the minimal symbol tables for functions
2621 and variables that match, and force their symbols to be read.
2622 This is in particular necessary for demangled variable names,
2623 which are no longer put into the partial symbol tables.
2624 The symbol will then be found during the scan of symtabs below.
2626 For functions, find_pc_symtab should succeed if we have debug info
2627 for the function, for variables we have to call lookup_symbol
2628 to determine if the variable has debug info.
2629 If the lookup fails, set found_misc so that we will rescan to print
2630 any matching symbols without debug info.
2633 if (nfiles
== 0 && (kind
== VARIABLES_NAMESPACE
|| kind
== FUNCTIONS_NAMESPACE
))
2635 ALL_MSYMBOLS (objfile
, msymbol
)
2637 if (MSYMBOL_TYPE (msymbol
) == ourtype
||
2638 MSYMBOL_TYPE (msymbol
) == ourtype2
||
2639 MSYMBOL_TYPE (msymbol
) == ourtype3
||
2640 MSYMBOL_TYPE (msymbol
) == ourtype4
)
2642 if (regexp
== NULL
|| SYMBOL_MATCHES_REGEXP (msymbol
))
2644 if (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
)))
2646 if (kind
== FUNCTIONS_NAMESPACE
2647 || lookup_symbol (SYMBOL_NAME (msymbol
),
2648 (struct block
*) NULL
,
2650 0, (struct symtab
**) NULL
) == NULL
)
2658 ALL_SYMTABS (objfile
, s
)
2660 bv
= BLOCKVECTOR (s
);
2661 /* Often many files share a blockvector.
2662 Scan each blockvector only once so that
2663 we don't get every symbol many times.
2664 It happens that the first symtab in the list
2665 for any given blockvector is the main file. */
2667 for (i
= GLOBAL_BLOCK
; i
<= STATIC_BLOCK
; i
++)
2669 struct symbol_search
*prevtail
= tail
;
2671 b
= BLOCKVECTOR_BLOCK (bv
, i
);
2672 for (j
= 0; j
< BLOCK_NSYMS (b
); j
++)
2675 sym
= BLOCK_SYM (b
, j
);
2676 if (file_matches (s
->filename
, files
, nfiles
)
2677 && ((regexp
== NULL
|| SYMBOL_MATCHES_REGEXP (sym
))
2678 && ((kind
== VARIABLES_NAMESPACE
&& SYMBOL_CLASS (sym
) != LOC_TYPEDEF
2679 && SYMBOL_CLASS (sym
) != LOC_BLOCK
2680 && SYMBOL_CLASS (sym
) != LOC_CONST
)
2681 || (kind
== FUNCTIONS_NAMESPACE
&& SYMBOL_CLASS (sym
) == LOC_BLOCK
)
2682 || (kind
== TYPES_NAMESPACE
&& SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
2683 || (kind
== METHODS_NAMESPACE
&& SYMBOL_CLASS (sym
) == LOC_BLOCK
))))
2686 psr
= (struct symbol_search
*) xmalloc (sizeof (struct symbol_search
));
2690 psr
->msymbol
= NULL
;
2702 if (prevtail
== NULL
)
2704 struct symbol_search dummy
;
2707 tail
= sort_search_symbols (&dummy
, nfound
);
2710 old_chain
= make_cleanup_free_search_symbols (sr
);
2713 tail
= sort_search_symbols (prevtail
, nfound
);
2719 /* If there are no eyes, avoid all contact. I mean, if there are
2720 no debug symbols, then print directly from the msymbol_vector. */
2722 if (found_misc
|| kind
!= FUNCTIONS_NAMESPACE
)
2724 ALL_MSYMBOLS (objfile
, msymbol
)
2726 if (MSYMBOL_TYPE (msymbol
) == ourtype
||
2727 MSYMBOL_TYPE (msymbol
) == ourtype2
||
2728 MSYMBOL_TYPE (msymbol
) == ourtype3
||
2729 MSYMBOL_TYPE (msymbol
) == ourtype4
)
2731 if (regexp
== NULL
|| SYMBOL_MATCHES_REGEXP (msymbol
))
2733 /* Functions: Look up by address. */
2734 if (kind
!= FUNCTIONS_NAMESPACE
||
2735 (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
))))
2737 /* Variables/Absolutes: Look up by name */
2738 if (lookup_symbol (SYMBOL_NAME (msymbol
),
2739 (struct block
*) NULL
, VAR_NAMESPACE
,
2740 0, (struct symtab
**) NULL
) == NULL
)
2743 psr
= (struct symbol_search
*) xmalloc (sizeof (struct symbol_search
));
2745 psr
->msymbol
= msymbol
;
2752 old_chain
= make_cleanup_free_search_symbols (sr
);
2766 discard_cleanups (old_chain
);
2769 /* Helper function for symtab_symbol_info, this function uses
2770 the data returned from search_symbols() to print information
2771 regarding the match to gdb_stdout.
2774 print_symbol_info (namespace_enum kind
, struct symtab
*s
, struct symbol
*sym
,
2775 int block
, char *last
)
2777 if (last
== NULL
|| strcmp (last
, s
->filename
) != 0)
2779 fputs_filtered ("\nFile ", gdb_stdout
);
2780 fputs_filtered (s
->filename
, gdb_stdout
);
2781 fputs_filtered (":\n", gdb_stdout
);
2784 if (kind
!= TYPES_NAMESPACE
&& block
== STATIC_BLOCK
)
2785 printf_filtered ("static ");
2787 /* Typedef that is not a C++ class */
2788 if (kind
== TYPES_NAMESPACE
2789 && SYMBOL_NAMESPACE (sym
) != STRUCT_NAMESPACE
)
2790 typedef_print (SYMBOL_TYPE (sym
), sym
, gdb_stdout
);
2791 /* variable, func, or typedef-that-is-c++-class */
2792 else if (kind
< TYPES_NAMESPACE
||
2793 (kind
== TYPES_NAMESPACE
&&
2794 SYMBOL_NAMESPACE (sym
) == STRUCT_NAMESPACE
))
2796 type_print (SYMBOL_TYPE (sym
),
2797 (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
2798 ? "" : SYMBOL_SOURCE_NAME (sym
)),
2801 printf_filtered (";\n");
2806 /* Tiemann says: "info methods was never implemented." */
2807 char *demangled_name
;
2808 c_type_print_base (TYPE_FN_FIELD_TYPE (t
, block
),
2810 c_type_print_varspec_prefix (TYPE_FN_FIELD_TYPE (t
, block
),
2812 if (TYPE_FN_FIELD_STUB (t
, block
))
2813 check_stub_method (TYPE_DOMAIN_TYPE (type
), j
, block
);
2815 cplus_demangle (TYPE_FN_FIELD_PHYSNAME (t
, block
),
2816 DMGL_ANSI
| DMGL_PARAMS
);
2817 if (demangled_name
== NULL
)
2818 fprintf_filtered (stream
, "<badly mangled name %s>",
2819 TYPE_FN_FIELD_PHYSNAME (t
, block
));
2822 fputs_filtered (demangled_name
, stream
);
2823 xfree (demangled_name
);
2829 /* This help function for symtab_symbol_info() prints information
2830 for non-debugging symbols to gdb_stdout.
2833 print_msymbol_info (struct minimal_symbol
*msymbol
)
2837 if (TARGET_ADDR_BIT
<= 32)
2838 tmp
= longest_local_hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol
)
2839 & (CORE_ADDR
) 0xffffffff,
2842 tmp
= longest_local_hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol
),
2844 printf_filtered ("%s %s\n",
2845 tmp
, SYMBOL_SOURCE_NAME (msymbol
));
2848 /* This is the guts of the commands "info functions", "info types", and
2849 "info variables". It calls search_symbols to find all matches and then
2850 print_[m]symbol_info to print out some useful information about the
2854 symtab_symbol_info (char *regexp
, namespace_enum kind
, int from_tty
)
2856 static char *classnames
[]
2858 {"variable", "function", "type", "method"};
2859 struct symbol_search
*symbols
;
2860 struct symbol_search
*p
;
2861 struct cleanup
*old_chain
;
2862 char *last_filename
= NULL
;
2865 /* must make sure that if we're interrupted, symbols gets freed */
2866 search_symbols (regexp
, kind
, 0, (char **) NULL
, &symbols
);
2867 old_chain
= make_cleanup_free_search_symbols (symbols
);
2869 printf_filtered (regexp
2870 ? "All %ss matching regular expression \"%s\":\n"
2871 : "All defined %ss:\n",
2872 classnames
[(int) (kind
- VARIABLES_NAMESPACE
)], regexp
);
2874 for (p
= symbols
; p
!= NULL
; p
= p
->next
)
2878 if (p
->msymbol
!= NULL
)
2882 printf_filtered ("\nNon-debugging symbols:\n");
2885 print_msymbol_info (p
->msymbol
);
2889 print_symbol_info (kind
,
2894 last_filename
= p
->symtab
->filename
;
2898 do_cleanups (old_chain
);
2902 variables_info (char *regexp
, int from_tty
)
2904 symtab_symbol_info (regexp
, VARIABLES_NAMESPACE
, from_tty
);
2908 functions_info (char *regexp
, int from_tty
)
2910 symtab_symbol_info (regexp
, FUNCTIONS_NAMESPACE
, from_tty
);
2915 types_info (char *regexp
, int from_tty
)
2917 symtab_symbol_info (regexp
, TYPES_NAMESPACE
, from_tty
);
2921 /* Tiemann says: "info methods was never implemented." */
2923 methods_info (char *regexp
)
2925 symtab_symbol_info (regexp
, METHODS_NAMESPACE
, 0, from_tty
);
2929 /* Breakpoint all functions matching regular expression. */
2932 rbreak_command_wrapper (char *regexp
, int from_tty
)
2934 rbreak_command (regexp
, from_tty
);
2938 rbreak_command (char *regexp
, int from_tty
)
2940 struct symbol_search
*ss
;
2941 struct symbol_search
*p
;
2942 struct cleanup
*old_chain
;
2944 search_symbols (regexp
, FUNCTIONS_NAMESPACE
, 0, (char **) NULL
, &ss
);
2945 old_chain
= make_cleanup_free_search_symbols (ss
);
2947 for (p
= ss
; p
!= NULL
; p
= p
->next
)
2949 if (p
->msymbol
== NULL
)
2951 char *string
= (char *) alloca (strlen (p
->symtab
->filename
)
2952 + strlen (SYMBOL_NAME (p
->symbol
))
2954 strcpy (string
, p
->symtab
->filename
);
2955 strcat (string
, ":'");
2956 strcat (string
, SYMBOL_NAME (p
->symbol
));
2957 strcat (string
, "'");
2958 break_command (string
, from_tty
);
2959 print_symbol_info (FUNCTIONS_NAMESPACE
,
2963 p
->symtab
->filename
);
2967 break_command (SYMBOL_NAME (p
->msymbol
), from_tty
);
2968 printf_filtered ("<function, no debug info> %s;\n",
2969 SYMBOL_SOURCE_NAME (p
->msymbol
));
2973 do_cleanups (old_chain
);
2977 /* Return Nonzero if block a is lexically nested within block b,
2978 or if a and b have the same pc range.
2979 Return zero otherwise. */
2981 contained_in (struct block
*a
, struct block
*b
)
2985 return BLOCK_START (a
) >= BLOCK_START (b
)
2986 && BLOCK_END (a
) <= BLOCK_END (b
);
2990 /* Helper routine for make_symbol_completion_list. */
2992 static int return_val_size
;
2993 static int return_val_index
;
2994 static char **return_val
;
2996 #define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \
2998 if (SYMBOL_DEMANGLED_NAME (symbol) != NULL) \
2999 /* Put only the mangled name on the list. */ \
3000 /* Advantage: "b foo<TAB>" completes to "b foo(int, int)" */ \
3001 /* Disadvantage: "b foo__i<TAB>" doesn't complete. */ \
3002 completion_list_add_name \
3003 (SYMBOL_DEMANGLED_NAME (symbol), (sym_text), (len), (text), (word)); \
3005 completion_list_add_name \
3006 (SYMBOL_NAME (symbol), (sym_text), (len), (text), (word)); \
3009 /* Test to see if the symbol specified by SYMNAME (which is already
3010 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
3011 characters. If so, add it to the current completion list. */
3014 completion_list_add_name (char *symname
, char *sym_text
, int sym_text_len
,
3015 char *text
, char *word
)
3020 /* clip symbols that cannot match */
3022 if (strncmp (symname
, sym_text
, sym_text_len
) != 0)
3027 /* We have a match for a completion, so add SYMNAME to the current list
3028 of matches. Note that the name is moved to freshly malloc'd space. */
3032 if (word
== sym_text
)
3034 new = xmalloc (strlen (symname
) + 5);
3035 strcpy (new, symname
);
3037 else if (word
> sym_text
)
3039 /* Return some portion of symname. */
3040 new = xmalloc (strlen (symname
) + 5);
3041 strcpy (new, symname
+ (word
- sym_text
));
3045 /* Return some of SYM_TEXT plus symname. */
3046 new = xmalloc (strlen (symname
) + (sym_text
- word
) + 5);
3047 strncpy (new, word
, sym_text
- word
);
3048 new[sym_text
- word
] = '\0';
3049 strcat (new, symname
);
3052 if (return_val_index
+ 3 > return_val_size
)
3054 newsize
= (return_val_size
*= 2) * sizeof (char *);
3055 return_val
= (char **) xrealloc ((char *) return_val
, newsize
);
3057 return_val
[return_val_index
++] = new;
3058 return_val
[return_val_index
] = NULL
;
3062 /* Return a NULL terminated array of all symbols (regardless of class)
3063 which begin by matching TEXT. If the answer is no symbols, then
3064 the return value is an array which contains only a NULL pointer.
3066 Problem: All of the symbols have to be copied because readline frees them.
3067 I'm not going to worry about this; hopefully there won't be that many. */
3070 make_symbol_completion_list (char *text
, char *word
)
3072 register struct symbol
*sym
;
3073 register struct symtab
*s
;
3074 register struct partial_symtab
*ps
;
3075 register struct minimal_symbol
*msymbol
;
3076 register struct objfile
*objfile
;
3077 register struct block
*b
, *surrounding_static_block
= 0;
3079 struct partial_symbol
**psym
;
3080 /* The symbol we are completing on. Points in same buffer as text. */
3082 /* Length of sym_text. */
3085 /* Now look for the symbol we are supposed to complete on.
3086 FIXME: This should be language-specific. */
3090 char *quote_pos
= NULL
;
3092 /* First see if this is a quoted string. */
3094 for (p
= text
; *p
!= '\0'; ++p
)
3096 if (quote_found
!= '\0')
3098 if (*p
== quote_found
)
3099 /* Found close quote. */
3101 else if (*p
== '\\' && p
[1] == quote_found
)
3102 /* A backslash followed by the quote character
3103 doesn't end the string. */
3106 else if (*p
== '\'' || *p
== '"')
3112 if (quote_found
== '\'')
3113 /* A string within single quotes can be a symbol, so complete on it. */
3114 sym_text
= quote_pos
+ 1;
3115 else if (quote_found
== '"')
3116 /* A double-quoted string is never a symbol, nor does it make sense
3117 to complete it any other way. */
3119 return_val
= (char **) xmalloc (sizeof (char *));
3120 return_val
[0] = NULL
;
3125 /* It is not a quoted string. Break it based on the characters
3126 which are in symbols. */
3129 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
3138 sym_text_len
= strlen (sym_text
);
3140 return_val_size
= 100;
3141 return_val_index
= 0;
3142 return_val
= (char **) xmalloc ((return_val_size
+ 1) * sizeof (char *));
3143 return_val
[0] = NULL
;
3145 /* Look through the partial symtabs for all symbols which begin
3146 by matching SYM_TEXT. Add each one that you find to the list. */
3148 ALL_PSYMTABS (objfile
, ps
)
3150 /* If the psymtab's been read in we'll get it when we search
3151 through the blockvector. */
3155 for (psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
3156 psym
< (objfile
->global_psymbols
.list
+ ps
->globals_offset
3157 + ps
->n_global_syms
);
3160 /* If interrupted, then quit. */
3162 COMPLETION_LIST_ADD_SYMBOL (*psym
, sym_text
, sym_text_len
, text
, word
);
3165 for (psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
3166 psym
< (objfile
->static_psymbols
.list
+ ps
->statics_offset
3167 + ps
->n_static_syms
);
3171 COMPLETION_LIST_ADD_SYMBOL (*psym
, sym_text
, sym_text_len
, text
, word
);
3175 /* At this point scan through the misc symbol vectors and add each
3176 symbol you find to the list. Eventually we want to ignore
3177 anything that isn't a text symbol (everything else will be
3178 handled by the psymtab code above). */
3180 ALL_MSYMBOLS (objfile
, msymbol
)
3183 COMPLETION_LIST_ADD_SYMBOL (msymbol
, sym_text
, sym_text_len
, text
, word
);
3186 /* Search upwards from currently selected frame (so that we can
3187 complete on local vars. */
3189 for (b
= get_selected_block (); b
!= NULL
; b
= BLOCK_SUPERBLOCK (b
))
3191 if (!BLOCK_SUPERBLOCK (b
))
3193 surrounding_static_block
= b
; /* For elmin of dups */
3196 /* Also catch fields of types defined in this places which match our
3197 text string. Only complete on types visible from current context. */
3199 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
3201 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3202 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
3204 struct type
*t
= SYMBOL_TYPE (sym
);
3205 enum type_code c
= TYPE_CODE (t
);
3207 if (c
== TYPE_CODE_UNION
|| c
== TYPE_CODE_STRUCT
)
3209 for (j
= TYPE_N_BASECLASSES (t
); j
< TYPE_NFIELDS (t
); j
++)
3211 if (TYPE_FIELD_NAME (t
, j
))
3213 completion_list_add_name (TYPE_FIELD_NAME (t
, j
),
3214 sym_text
, sym_text_len
, text
, word
);
3222 /* Go through the symtabs and check the externs and statics for
3223 symbols which match. */
3225 ALL_SYMTABS (objfile
, s
)
3228 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
3229 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
3231 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3235 ALL_SYMTABS (objfile
, s
)
3238 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
3239 /* Don't do this block twice. */
3240 if (b
== surrounding_static_block
)
3242 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
3244 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3248 return (return_val
);
3251 /* Like make_symbol_completion_list, but returns a list of symbols
3252 defined in a source file FILE. */
3255 make_file_symbol_completion_list (char *text
, char *word
, char *srcfile
)
3257 register struct symbol
*sym
;
3258 register struct symtab
*s
;
3259 register struct block
*b
;
3261 /* The symbol we are completing on. Points in same buffer as text. */
3263 /* Length of sym_text. */
3266 /* Now look for the symbol we are supposed to complete on.
3267 FIXME: This should be language-specific. */
3271 char *quote_pos
= NULL
;
3273 /* First see if this is a quoted string. */
3275 for (p
= text
; *p
!= '\0'; ++p
)
3277 if (quote_found
!= '\0')
3279 if (*p
== quote_found
)
3280 /* Found close quote. */
3282 else if (*p
== '\\' && p
[1] == quote_found
)
3283 /* A backslash followed by the quote character
3284 doesn't end the string. */
3287 else if (*p
== '\'' || *p
== '"')
3293 if (quote_found
== '\'')
3294 /* A string within single quotes can be a symbol, so complete on it. */
3295 sym_text
= quote_pos
+ 1;
3296 else if (quote_found
== '"')
3297 /* A double-quoted string is never a symbol, nor does it make sense
3298 to complete it any other way. */
3300 return_val
= (char **) xmalloc (sizeof (char *));
3301 return_val
[0] = NULL
;
3306 /* It is not a quoted string. Break it based on the characters
3307 which are in symbols. */
3310 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
3319 sym_text_len
= strlen (sym_text
);
3321 return_val_size
= 10;
3322 return_val_index
= 0;
3323 return_val
= (char **) xmalloc ((return_val_size
+ 1) * sizeof (char *));
3324 return_val
[0] = NULL
;
3326 /* Find the symtab for SRCFILE (this loads it if it was not yet read
3328 s
= lookup_symtab (srcfile
);
3331 /* Maybe they typed the file with leading directories, while the
3332 symbol tables record only its basename. */
3333 const char *tail
= lbasename (srcfile
);
3336 s
= lookup_symtab (tail
);
3339 /* If we have no symtab for that file, return an empty list. */
3341 return (return_val
);
3343 /* Go through this symtab and check the externs and statics for
3344 symbols which match. */
3346 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
3347 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
3349 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3352 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
3353 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
3355 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3358 return (return_val
);
3361 /* A helper function for make_source_files_completion_list. It adds
3362 another file name to a list of possible completions, growing the
3363 list as necessary. */
3366 add_filename_to_list (const char *fname
, char *text
, char *word
,
3367 char ***list
, int *list_used
, int *list_alloced
)
3370 size_t fnlen
= strlen (fname
);
3372 if (*list_used
+ 1 >= *list_alloced
)
3375 *list
= (char **) xrealloc ((char *) *list
,
3376 *list_alloced
* sizeof (char *));
3381 /* Return exactly fname. */
3382 new = xmalloc (fnlen
+ 5);
3383 strcpy (new, fname
);
3385 else if (word
> text
)
3387 /* Return some portion of fname. */
3388 new = xmalloc (fnlen
+ 5);
3389 strcpy (new, fname
+ (word
- text
));
3393 /* Return some of TEXT plus fname. */
3394 new = xmalloc (fnlen
+ (text
- word
) + 5);
3395 strncpy (new, word
, text
- word
);
3396 new[text
- word
] = '\0';
3397 strcat (new, fname
);
3399 (*list
)[*list_used
] = new;
3400 (*list
)[++*list_used
] = NULL
;
3404 not_interesting_fname (const char *fname
)
3406 static const char *illegal_aliens
[] = {
3407 "_globals_", /* inserted by coff_symtab_read */
3412 for (i
= 0; illegal_aliens
[i
]; i
++)
3414 if (strcmp (fname
, illegal_aliens
[i
]) == 0)
3420 /* Return a NULL terminated array of all source files whose names
3421 begin with matching TEXT. The file names are looked up in the
3422 symbol tables of this program. If the answer is no matchess, then
3423 the return value is an array which contains only a NULL pointer. */
3426 make_source_files_completion_list (char *text
, char *word
)
3428 register struct symtab
*s
;
3429 register struct partial_symtab
*ps
;
3430 register struct objfile
*objfile
;
3432 int list_alloced
= 1;
3434 size_t text_len
= strlen (text
);
3435 char **list
= (char **) xmalloc (list_alloced
* sizeof (char *));
3436 const char *base_name
;
3440 if (!have_full_symbols () && !have_partial_symbols ())
3443 ALL_SYMTABS (objfile
, s
)
3445 if (not_interesting_fname (s
->filename
))
3447 if (!filename_seen (s
->filename
, 1, &first
)
3448 #if HAVE_DOS_BASED_FILE_SYSTEM
3449 && strncasecmp (s
->filename
, text
, text_len
) == 0
3451 && strncmp (s
->filename
, text
, text_len
) == 0
3455 /* This file matches for a completion; add it to the current
3457 add_filename_to_list (s
->filename
, text
, word
,
3458 &list
, &list_used
, &list_alloced
);
3462 /* NOTE: We allow the user to type a base name when the
3463 debug info records leading directories, but not the other
3464 way around. This is what subroutines of breakpoint
3465 command do when they parse file names. */
3466 base_name
= lbasename (s
->filename
);
3467 if (base_name
!= s
->filename
3468 && !filename_seen (base_name
, 1, &first
)
3469 #if HAVE_DOS_BASED_FILE_SYSTEM
3470 && strncasecmp (base_name
, text
, text_len
) == 0
3472 && strncmp (base_name
, text
, text_len
) == 0
3475 add_filename_to_list (base_name
, text
, word
,
3476 &list
, &list_used
, &list_alloced
);
3480 ALL_PSYMTABS (objfile
, ps
)
3482 if (not_interesting_fname (ps
->filename
))
3486 if (!filename_seen (ps
->filename
, 1, &first
)
3487 #if HAVE_DOS_BASED_FILE_SYSTEM
3488 && strncasecmp (ps
->filename
, text
, text_len
) == 0
3490 && strncmp (ps
->filename
, text
, text_len
) == 0
3494 /* This file matches for a completion; add it to the
3495 current list of matches. */
3496 add_filename_to_list (ps
->filename
, text
, word
,
3497 &list
, &list_used
, &list_alloced
);
3502 base_name
= lbasename (ps
->filename
);
3503 if (base_name
!= ps
->filename
3504 && !filename_seen (base_name
, 1, &first
)
3505 #if HAVE_DOS_BASED_FILE_SYSTEM
3506 && strncasecmp (base_name
, text
, text_len
) == 0
3508 && strncmp (base_name
, text
, text_len
) == 0
3511 add_filename_to_list (base_name
, text
, word
,
3512 &list
, &list_used
, &list_alloced
);
3520 /* Determine if PC is in the prologue of a function. The prologue is the area
3521 between the first instruction of a function, and the first executable line.
3522 Returns 1 if PC *might* be in prologue, 0 if definately *not* in prologue.
3524 If non-zero, func_start is where we think the prologue starts, possibly
3525 by previous examination of symbol table information.
3529 in_prologue (CORE_ADDR pc
, CORE_ADDR func_start
)
3531 struct symtab_and_line sal
;
3532 CORE_ADDR func_addr
, func_end
;
3534 /* We have several sources of information we can consult to figure
3536 - Compilers usually emit line number info that marks the prologue
3537 as its own "source line". So the ending address of that "line"
3538 is the end of the prologue. If available, this is the most
3540 - The minimal symbols and partial symbols, which can usually tell
3541 us the starting and ending addresses of a function.
3542 - If we know the function's start address, we can call the
3543 architecture-defined SKIP_PROLOGUE function to analyze the
3544 instruction stream and guess where the prologue ends.
3545 - Our `func_start' argument; if non-zero, this is the caller's
3546 best guess as to the function's entry point. At the time of
3547 this writing, handle_inferior_event doesn't get this right, so
3548 it should be our last resort. */
3550 /* Consult the partial symbol table, to find which function
3552 if (! find_pc_partial_function (pc
, NULL
, &func_addr
, &func_end
))
3554 CORE_ADDR prologue_end
;
3556 /* We don't even have minsym information, so fall back to using
3557 func_start, if given. */
3559 return 1; /* We *might* be in a prologue. */
3561 prologue_end
= SKIP_PROLOGUE (func_start
);
3563 return func_start
<= pc
&& pc
< prologue_end
;
3566 /* If we have line number information for the function, that's
3567 usually pretty reliable. */
3568 sal
= find_pc_line (func_addr
, 0);
3570 /* Now sal describes the source line at the function's entry point,
3571 which (by convention) is the prologue. The end of that "line",
3572 sal.end, is the end of the prologue.
3574 Note that, for functions whose source code is all on a single
3575 line, the line number information doesn't always end up this way.
3576 So we must verify that our purported end-of-prologue address is
3577 *within* the function, not at its start or end. */
3579 || sal
.end
<= func_addr
3580 || func_end
<= sal
.end
)
3582 /* We don't have any good line number info, so use the minsym
3583 information, together with the architecture-specific prologue
3585 CORE_ADDR prologue_end
= SKIP_PROLOGUE (func_addr
);
3587 return func_addr
<= pc
&& pc
< prologue_end
;
3590 /* We have line number info, and it looks good. */
3591 return func_addr
<= pc
&& pc
< sal
.end
;
3595 /* Begin overload resolution functions */
3596 /* Helper routine for make_symbol_completion_list. */
3598 static int sym_return_val_size
;
3599 static int sym_return_val_index
;
3600 static struct symbol
**sym_return_val
;
3602 /* Test to see if the symbol specified by SYMNAME (which is already
3603 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
3604 characters. If so, add it to the current completion list. */
3607 overload_list_add_symbol (struct symbol
*sym
, char *oload_name
)
3612 /* Get the demangled name without parameters */
3613 char *sym_name
= cplus_demangle (SYMBOL_NAME (sym
), DMGL_ARM
| DMGL_ANSI
);
3616 sym_name
= (char *) xmalloc (strlen (SYMBOL_NAME (sym
)) + 1);
3617 strcpy (sym_name
, SYMBOL_NAME (sym
));
3620 /* skip symbols that cannot match */
3621 if (strcmp (sym_name
, oload_name
) != 0)
3627 /* If there is no type information, we can't do anything, so skip */
3628 if (SYMBOL_TYPE (sym
) == NULL
)
3631 /* skip any symbols that we've already considered. */
3632 for (i
= 0; i
< sym_return_val_index
; ++i
)
3633 if (!strcmp (SYMBOL_NAME (sym
), SYMBOL_NAME (sym_return_val
[i
])))
3636 /* We have a match for an overload instance, so add SYM to the current list
3637 * of overload instances */
3638 if (sym_return_val_index
+ 3 > sym_return_val_size
)
3640 newsize
= (sym_return_val_size
*= 2) * sizeof (struct symbol
*);
3641 sym_return_val
= (struct symbol
**) xrealloc ((char *) sym_return_val
, newsize
);
3643 sym_return_val
[sym_return_val_index
++] = sym
;
3644 sym_return_val
[sym_return_val_index
] = NULL
;
3649 /* Return a null-terminated list of pointers to function symbols that
3650 * match name of the supplied symbol FSYM.
3651 * This is used in finding all overloaded instances of a function name.
3652 * This has been modified from make_symbol_completion_list. */
3656 make_symbol_overload_list (struct symbol
*fsym
)
3658 register struct symbol
*sym
;
3659 register struct symtab
*s
;
3660 register struct partial_symtab
*ps
;
3661 register struct objfile
*objfile
;
3662 register struct block
*b
, *surrounding_static_block
= 0;
3664 /* The name we are completing on. */
3665 char *oload_name
= NULL
;
3666 /* Length of name. */
3667 int oload_name_len
= 0;
3669 /* Look for the symbol we are supposed to complete on.
3670 * FIXME: This should be language-specific. */
3672 oload_name
= cplus_demangle (SYMBOL_NAME (fsym
), DMGL_ARM
| DMGL_ANSI
);
3675 oload_name
= (char *) xmalloc (strlen (SYMBOL_NAME (fsym
)) + 1);
3676 strcpy (oload_name
, SYMBOL_NAME (fsym
));
3678 oload_name_len
= strlen (oload_name
);
3680 sym_return_val_size
= 100;
3681 sym_return_val_index
= 0;
3682 sym_return_val
= (struct symbol
**) xmalloc ((sym_return_val_size
+ 1) * sizeof (struct symbol
*));
3683 sym_return_val
[0] = NULL
;
3685 /* Look through the partial symtabs for all symbols which begin
3686 by matching OLOAD_NAME. Make sure we read that symbol table in. */
3688 ALL_PSYMTABS (objfile
, ps
)
3690 struct partial_symbol
**psym
;
3692 /* If the psymtab's been read in we'll get it when we search
3693 through the blockvector. */
3697 for (psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
3698 psym
< (objfile
->global_psymbols
.list
+ ps
->globals_offset
3699 + ps
->n_global_syms
);
3702 /* If interrupted, then quit. */
3704 /* This will cause the symbol table to be read if it has not yet been */
3705 s
= PSYMTAB_TO_SYMTAB (ps
);
3708 for (psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
3709 psym
< (objfile
->static_psymbols
.list
+ ps
->statics_offset
3710 + ps
->n_static_syms
);
3714 /* This will cause the symbol table to be read if it has not yet been */
3715 s
= PSYMTAB_TO_SYMTAB (ps
);
3719 /* Search upwards from currently selected frame (so that we can
3720 complete on local vars. */
3722 for (b
= get_selected_block (); b
!= NULL
; b
= BLOCK_SUPERBLOCK (b
))
3724 if (!BLOCK_SUPERBLOCK (b
))
3726 surrounding_static_block
= b
; /* For elimination of dups */
3729 /* Also catch fields of types defined in this places which match our
3730 text string. Only complete on types visible from current context. */
3732 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
3734 overload_list_add_symbol (sym
, oload_name
);
3738 /* Go through the symtabs and check the externs and statics for
3739 symbols which match. */
3741 ALL_SYMTABS (objfile
, s
)
3744 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
3745 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
3747 overload_list_add_symbol (sym
, oload_name
);
3751 ALL_SYMTABS (objfile
, s
)
3754 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
3755 /* Don't do this block twice. */
3756 if (b
== surrounding_static_block
)
3758 ALL_BLOCK_SYMBOLS (b
, i
, sym
)
3760 overload_list_add_symbol (sym
, oload_name
);
3766 return (sym_return_val
);
3769 /* End of overload resolution functions */
3771 struct symtabs_and_lines
3772 decode_line_spec (char *string
, int funfirstline
)
3774 struct symtabs_and_lines sals
;
3776 error ("Empty line specification.");
3777 sals
= decode_line_1 (&string
, funfirstline
,
3778 current_source_symtab
, current_source_line
,
3781 error ("Junk at end of line specification: %s", string
);
3786 static char *name_of_main
;
3789 set_main_name (const char *name
)
3791 if (name_of_main
!= NULL
)
3793 xfree (name_of_main
);
3794 name_of_main
= NULL
;
3798 name_of_main
= xstrdup (name
);
3805 if (name_of_main
!= NULL
)
3806 return name_of_main
;
3813 _initialize_symtab (void)
3815 add_info ("variables", variables_info
,
3816 "All global and static variable names, or those matching REGEXP.");
3818 add_com ("whereis", class_info
, variables_info
,
3819 "All global and static variable names, or those matching REGEXP.");
3821 add_info ("functions", functions_info
,
3822 "All function names, or those matching REGEXP.");
3825 /* FIXME: This command has at least the following problems:
3826 1. It prints builtin types (in a very strange and confusing fashion).
3827 2. It doesn't print right, e.g. with
3828 typedef struct foo *FOO
3829 type_print prints "FOO" when we want to make it (in this situation)
3830 print "struct foo *".
3831 I also think "ptype" or "whatis" is more likely to be useful (but if
3832 there is much disagreement "info types" can be fixed). */
3833 add_info ("types", types_info
,
3834 "All type names, or those matching REGEXP.");
3837 add_info ("methods", methods_info
,
3838 "All method names, or those matching REGEXP::REGEXP.\n\
3839 If the class qualifier is omitted, it is assumed to be the current scope.\n\
3840 If the first REGEXP is omitted, then all methods matching the second REGEXP\n\
3843 add_info ("sources", sources_info
,
3844 "Source files in the program.");
3846 add_com ("rbreak", class_breakpoint
, rbreak_command
,
3847 "Set a breakpoint for all functions matching REGEXP.");
3851 add_com ("lf", class_info
, sources_info
, "Source files in the program");
3852 add_com ("lg", class_info
, variables_info
,
3853 "All global and static variable names, or those matching REGEXP.");
3856 /* Initialize the one built-in type that isn't language dependent... */
3857 builtin_type_error
= init_type (TYPE_CODE_ERROR
, 0, 0,
3858 "<unknown type>", (struct objfile
*) NULL
);