3347 lines
92 KiB
C
3347 lines
92 KiB
C
/* Symbol table lookup for the GNU debugger, GDB.
|
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Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995
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Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
|
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it under the terms of the GNU General Public License as published by
|
||
the Free Software Foundation; either version 2 of the License, or
|
||
(at your option) any later version.
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||
|
||
This program is distributed in the hope that it will be useful,
|
||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
|
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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|
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#include "defs.h"
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#include "symtab.h"
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#include "gdbtypes.h"
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#include "gdbcore.h"
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#include "frame.h"
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||
#include "target.h"
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#include "value.h"
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#include "symfile.h"
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||
#include "objfiles.h"
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||
#include "gdbcmd.h"
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#include "call-cmds.h"
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#include "gnu-regex.h"
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||
#include "expression.h"
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#include "language.h"
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#include "demangle.h"
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|
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#include "obstack.h"
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#include <sys/types.h>
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#include <fcntl.h>
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#include "gdb_string.h"
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#include "gdb_stat.h"
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#include <ctype.h>
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||
/* Prototypes for local functions */
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||
|
||
extern int
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||
find_methods PARAMS ((struct type *, char *, struct symbol **));
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||
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||
static void
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||
completion_list_add_name PARAMS ((char *, char *, int, char *, char *));
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||
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||
static void
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||
build_canonical_line_spec PARAMS ((struct symtab_and_line *, char *, char ***));
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||
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static struct symtabs_and_lines
|
||
decode_line_2 PARAMS ((struct symbol *[], int, int, char ***));
|
||
|
||
static void
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||
rbreak_command PARAMS ((char *, int));
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||
|
||
static void
|
||
types_info PARAMS ((char *, int));
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||
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||
static void
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||
functions_info PARAMS ((char *, int));
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||
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||
static void
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||
variables_info PARAMS ((char *, int));
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static void
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||
sources_info PARAMS ((char *, int));
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||
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static void
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list_symbols PARAMS ((char *, int, int, int));
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||
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||
static void
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||
output_source_filename PARAMS ((char *, int *));
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||
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||
static char *
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||
operator_chars PARAMS ((char *, char **));
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||
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||
static int find_line_common PARAMS ((struct linetable *, int, int *));
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||
|
||
static struct partial_symbol *
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||
lookup_partial_symbol PARAMS ((struct partial_symtab *, const char *,
|
||
int, namespace_enum));
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||
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static struct symtab *
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lookup_symtab_1 PARAMS ((char *));
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||
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/* */
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/* The single non-language-specific builtin type */
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struct type *builtin_type_error;
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/* Block in which the most recently searched-for symbol was found.
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||
Might be better to make this a parameter to lookup_symbol and
|
||
value_of_this. */
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||
|
||
const struct block *block_found;
|
||
|
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char no_symtab_msg[] = "No symbol table is loaded. Use the \"file\" command.";
|
||
|
||
/* While the C++ support is still in flux, issue a possibly helpful hint on
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||
using the new command completion feature on single quoted demangled C++
|
||
symbols. Remove when loose ends are cleaned up. FIXME -fnf */
|
||
|
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void
|
||
cplusplus_hint (name)
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||
char *name;
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||
{
|
||
while (*name == '\'')
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name++;
|
||
printf_filtered ("Hint: try '%s<TAB> or '%s<ESC-?>\n", name, name);
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||
printf_filtered ("(Note leading single quote.)\n");
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||
}
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/* Check for a symtab of a specific name; first in symtabs, then in
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psymtabs. *If* there is no '/' in the name, a match after a '/'
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||
in the symtab filename will also work. */
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||
|
||
static struct symtab *
|
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lookup_symtab_1 (name)
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||
char *name;
|
||
{
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||
register struct symtab *s;
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||
register struct partial_symtab *ps;
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||
register char *slash;
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||
register struct objfile *objfile;
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||
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got_symtab:
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||
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/* First, search for an exact match */
|
||
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ALL_SYMTABS (objfile, s)
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if (STREQ (name, s->filename))
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||
return s;
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||
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slash = strchr (name, '/');
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||
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/* Now, search for a matching tail (only if name doesn't have any dirs) */
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||
|
||
if (!slash)
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ALL_SYMTABS (objfile, s)
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||
{
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||
char *p = s -> filename;
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||
char *tail = strrchr (p, '/');
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|
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if (tail)
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||
p = tail + 1;
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||
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if (STREQ (p, name))
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return s;
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}
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||
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||
/* Same search rules as above apply here, but now we look thru the
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psymtabs. */
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ps = lookup_partial_symtab (name);
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if (!ps)
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||
return (NULL);
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||
|
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if (ps -> readin)
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error ("Internal: readin %s pst for `%s' found when no symtab found.",
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ps -> filename, name);
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s = PSYMTAB_TO_SYMTAB (ps);
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if (s)
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return s;
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/* At this point, we have located the psymtab for this file, but
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the conversion to a symtab has failed. This usually happens
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when we are looking up an include file. In this case,
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PSYMTAB_TO_SYMTAB doesn't return a symtab, even though one has
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been created. So, we need to run through the symtabs again in
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order to find the file.
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XXX - This is a crock, and should be fixed inside of the the
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symbol parsing routines. */
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goto got_symtab;
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}
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/* Lookup the symbol table of a source file named NAME. Try a couple
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of variations if the first lookup doesn't work. */
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struct symtab *
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lookup_symtab (name)
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char *name;
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{
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register struct symtab *s;
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#if 0
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register char *copy;
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#endif
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s = lookup_symtab_1 (name);
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if (s) return s;
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#if 0
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/* This screws c-exp.y:yylex if there is both a type "tree" and a symtab
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"tree.c". */
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/* If name not found as specified, see if adding ".c" helps. */
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/* Why is this? Is it just a user convenience? (If so, it's pretty
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questionable in the presence of C++, FORTRAN, etc.). It's not in
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the GDB manual. */
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copy = (char *) alloca (strlen (name) + 3);
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strcpy (copy, name);
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strcat (copy, ".c");
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s = lookup_symtab_1 (copy);
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if (s) return s;
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#endif /* 0 */
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/* We didn't find anything; die. */
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return 0;
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}
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/* Lookup the partial symbol table of a source file named NAME.
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*If* there is no '/' in the name, a match after a '/'
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in the psymtab filename will also work. */
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struct partial_symtab *
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lookup_partial_symtab (name)
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||
char *name;
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||
{
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||
register struct partial_symtab *pst;
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register struct objfile *objfile;
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||
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ALL_PSYMTABS (objfile, pst)
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||
{
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||
if (STREQ (name, pst -> filename))
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||
{
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||
return (pst);
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}
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}
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/* Now, search for a matching tail (only if name doesn't have any dirs) */
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if (!strchr (name, '/'))
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ALL_PSYMTABS (objfile, pst)
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{
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char *p = pst -> filename;
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char *tail = strrchr (p, '/');
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if (tail)
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p = tail + 1;
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if (STREQ (p, name))
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return (pst);
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}
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return (NULL);
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}
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/* Demangle a GDB method stub type.
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Note that this function is g++ specific. */
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char *
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gdb_mangle_name (type, i, j)
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struct type *type;
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int i, j;
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{
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int mangled_name_len;
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char *mangled_name;
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struct fn_field *f = TYPE_FN_FIELDLIST1 (type, i);
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struct fn_field *method = &f[j];
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char *field_name = TYPE_FN_FIELDLIST_NAME (type, i);
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char *physname = TYPE_FN_FIELD_PHYSNAME (f, j);
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char *newname = type_name_no_tag (type);
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/* Does the form of physname indicate that it is the full mangled name
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of a constructor (not just the args)? */
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int is_full_physname_constructor;
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int is_constructor;
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int is_destructor = DESTRUCTOR_PREFIX_P (physname);
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/* Need a new type prefix. */
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char *const_prefix = method->is_const ? "C" : "";
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char *volatile_prefix = method->is_volatile ? "V" : "";
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char buf[20];
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int len = (newname == NULL ? 0 : strlen (newname));
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is_full_physname_constructor =
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((physname[0]=='_' && physname[1]=='_' &&
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(isdigit(physname[2]) || physname[2]=='Q' || physname[2]=='t'))
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|| (strncmp(physname, "__ct", 4) == 0));
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is_constructor =
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is_full_physname_constructor || (newname && STREQ(field_name, newname));
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if (!is_destructor)
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is_destructor = (strncmp(physname, "__dt", 4) == 0);
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||
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if (is_destructor || is_full_physname_constructor)
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{
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||
mangled_name = (char*) xmalloc(strlen(physname)+1);
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strcpy(mangled_name, physname);
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return mangled_name;
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}
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if (len == 0)
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{
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sprintf (buf, "__%s%s", const_prefix, volatile_prefix);
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if (strcmp(buf, "__") == 0)
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buf[0] = '\0';
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}
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else if (newname != NULL && strchr (newname, '<') != NULL)
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{
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/* Template methods are fully mangled. */
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sprintf (buf, "__%s%s", const_prefix, volatile_prefix);
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newname = NULL;
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len = 0;
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||
}
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else
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{
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sprintf (buf, "__%s%s%d", const_prefix, volatile_prefix, len);
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}
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mangled_name_len = ((is_constructor ? 0 : strlen (field_name))
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+ strlen (buf) + len
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+ strlen (physname)
|
||
+ 1);
|
||
|
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/* Only needed for GNU-mangled names. ANSI-mangled names
|
||
work with the normal mechanisms. */
|
||
if (OPNAME_PREFIX_P (field_name))
|
||
{
|
||
const char *opname = cplus_mangle_opname (field_name + 3, 0);
|
||
if (opname == NULL)
|
||
error ("No mangling for \"%s\"", field_name);
|
||
mangled_name_len += strlen (opname);
|
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mangled_name = (char *)xmalloc (mangled_name_len);
|
||
|
||
strncpy (mangled_name, field_name, 3);
|
||
mangled_name[3] = '\0';
|
||
strcat (mangled_name, opname);
|
||
}
|
||
else
|
||
{
|
||
mangled_name = (char *)xmalloc (mangled_name_len);
|
||
if (is_constructor)
|
||
mangled_name[0] = '\0';
|
||
else
|
||
strcpy (mangled_name, field_name);
|
||
}
|
||
strcat (mangled_name, buf);
|
||
/* If the class doesn't have a name, i.e. newname NULL, then we just
|
||
mangle it using 0 for the length of the class. Thus it gets mangled
|
||
as something starting with `::' rather than `classname::'. */
|
||
if (newname != NULL)
|
||
strcat (mangled_name, newname);
|
||
|
||
strcat (mangled_name, physname);
|
||
return (mangled_name);
|
||
}
|
||
|
||
|
||
/* Find which partial symtab on contains PC. Return 0 if none. */
|
||
|
||
struct partial_symtab *
|
||
find_pc_psymtab (pc)
|
||
register CORE_ADDR pc;
|
||
{
|
||
register struct partial_symtab *pst;
|
||
register struct objfile *objfile;
|
||
|
||
ALL_PSYMTABS (objfile, pst)
|
||
{
|
||
if (pc >= pst->textlow && pc < pst->texthigh)
|
||
{
|
||
struct minimal_symbol *msymbol;
|
||
struct partial_symtab *tpst;
|
||
|
||
/* An objfile that has its functions reordered might have
|
||
many partial symbol tables containing the PC, but
|
||
we want the partial symbol table that contains the
|
||
function containing the PC. */
|
||
if (!(objfile->flags & OBJF_REORDERED))
|
||
return (pst);
|
||
|
||
msymbol = lookup_minimal_symbol_by_pc (pc);
|
||
if (msymbol == NULL)
|
||
return (pst);
|
||
|
||
for (tpst = pst; tpst != NULL; tpst = tpst->next)
|
||
{
|
||
if (pc >= tpst->textlow && pc < tpst->texthigh)
|
||
{
|
||
struct partial_symbol *p;
|
||
|
||
p = find_pc_psymbol (tpst, pc);
|
||
if (p != NULL
|
||
&& SYMBOL_VALUE_ADDRESS(p)
|
||
== SYMBOL_VALUE_ADDRESS (msymbol))
|
||
return (tpst);
|
||
}
|
||
}
|
||
return (pst);
|
||
}
|
||
}
|
||
return (NULL);
|
||
}
|
||
|
||
/* Find which partial symbol within a psymtab contains PC. Return 0
|
||
if none. Check all psymtabs if PSYMTAB is 0. */
|
||
struct partial_symbol *
|
||
find_pc_psymbol (psymtab, pc)
|
||
struct partial_symtab *psymtab;
|
||
CORE_ADDR pc;
|
||
{
|
||
struct partial_symbol *best = NULL, *p, **pp;
|
||
CORE_ADDR best_pc;
|
||
|
||
if (!psymtab)
|
||
psymtab = find_pc_psymtab (pc);
|
||
if (!psymtab)
|
||
return 0;
|
||
|
||
best_pc = psymtab->textlow - 1;
|
||
|
||
/* Search the global symbols as well as the static symbols, so that
|
||
find_pc_partial_function doesn't use a minimal symbol and thus
|
||
cache a bad endaddr. */
|
||
for (pp = psymtab->objfile->global_psymbols.list + psymtab->globals_offset;
|
||
(pp - (psymtab->objfile->global_psymbols.list + psymtab->globals_offset)
|
||
< psymtab->n_global_syms);
|
||
pp++)
|
||
{
|
||
p = *pp;
|
||
if (SYMBOL_NAMESPACE (p) == VAR_NAMESPACE
|
||
&& SYMBOL_CLASS (p) == LOC_BLOCK
|
||
&& pc >= SYMBOL_VALUE_ADDRESS (p)
|
||
&& SYMBOL_VALUE_ADDRESS (p) > best_pc)
|
||
{
|
||
best_pc = SYMBOL_VALUE_ADDRESS (p);
|
||
best = p;
|
||
}
|
||
}
|
||
for (pp = psymtab->objfile->static_psymbols.list + psymtab->statics_offset;
|
||
(pp - (psymtab->objfile->static_psymbols.list + psymtab->statics_offset)
|
||
< psymtab->n_static_syms);
|
||
pp++)
|
||
{
|
||
p = *pp;
|
||
if (SYMBOL_NAMESPACE (p) == VAR_NAMESPACE
|
||
&& SYMBOL_CLASS (p) == LOC_BLOCK
|
||
&& pc >= SYMBOL_VALUE_ADDRESS (p)
|
||
&& SYMBOL_VALUE_ADDRESS (p) > best_pc)
|
||
{
|
||
best_pc = SYMBOL_VALUE_ADDRESS (p);
|
||
best = p;
|
||
}
|
||
}
|
||
if (best_pc == psymtab->textlow - 1)
|
||
return 0;
|
||
return best;
|
||
}
|
||
|
||
|
||
/* Find the definition for a specified symbol name NAME
|
||
in namespace NAMESPACE, visible from lexical block BLOCK.
|
||
Returns the struct symbol pointer, or zero if no symbol is found.
|
||
If SYMTAB is non-NULL, store the symbol table in which the
|
||
symbol was found there, or NULL if not found.
|
||
C++: if IS_A_FIELD_OF_THIS is nonzero on entry, check to see if
|
||
NAME is a field of the current implied argument `this'. If so set
|
||
*IS_A_FIELD_OF_THIS to 1, otherwise set it to zero.
|
||
BLOCK_FOUND is set to the block in which NAME is found (in the case of
|
||
a field of `this', value_of_this sets BLOCK_FOUND to the proper value.) */
|
||
|
||
/* This function has a bunch of loops in it and it would seem to be
|
||
attractive to put in some QUIT's (though I'm not really sure
|
||
whether it can run long enough to be really important). But there
|
||
are a few calls for which it would appear to be bad news to quit
|
||
out of here: find_proc_desc in alpha-tdep.c and mips-tdep.c, and
|
||
nindy_frame_chain_valid in nindy-tdep.c. (Note that there is C++
|
||
code below which can error(), but that probably doesn't affect
|
||
these calls since they are looking for a known variable and thus
|
||
can probably assume it will never hit the C++ code). */
|
||
|
||
struct symbol *
|
||
lookup_symbol (name, block, namespace, is_a_field_of_this, symtab)
|
||
const char *name;
|
||
register const struct block *block;
|
||
const namespace_enum namespace;
|
||
int *is_a_field_of_this;
|
||
struct symtab **symtab;
|
||
{
|
||
register struct symbol *sym;
|
||
register struct symtab *s = NULL;
|
||
register struct partial_symtab *ps;
|
||
struct blockvector *bv;
|
||
register struct objfile *objfile;
|
||
register struct block *b;
|
||
register struct minimal_symbol *msymbol;
|
||
|
||
/* Search specified block and its superiors. */
|
||
|
||
while (block != 0)
|
||
{
|
||
sym = lookup_block_symbol (block, name, namespace);
|
||
if (sym)
|
||
{
|
||
block_found = block;
|
||
if (symtab != NULL)
|
||
{
|
||
/* Search the list of symtabs for one which contains the
|
||
address of the start of this block. */
|
||
ALL_SYMTABS (objfile, s)
|
||
{
|
||
bv = BLOCKVECTOR (s);
|
||
b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
|
||
if (BLOCK_START (b) <= BLOCK_START (block)
|
||
&& BLOCK_END (b) > BLOCK_START (block))
|
||
goto found;
|
||
}
|
||
found:
|
||
*symtab = s;
|
||
}
|
||
|
||
return (sym);
|
||
}
|
||
block = BLOCK_SUPERBLOCK (block);
|
||
}
|
||
|
||
/* FIXME: this code is never executed--block is always NULL at this
|
||
point. What is it trying to do, anyway? We already should have
|
||
checked the STATIC_BLOCK above (it is the superblock of top-level
|
||
blocks). Why is VAR_NAMESPACE special-cased? */
|
||
/* Don't need to mess with the psymtabs; if we have a block,
|
||
that file is read in. If we don't, then we deal later with
|
||
all the psymtab stuff that needs checking. */
|
||
if (namespace == VAR_NAMESPACE && block != NULL)
|
||
{
|
||
struct block *b;
|
||
/* Find the right symtab. */
|
||
ALL_SYMTABS (objfile, s)
|
||
{
|
||
bv = BLOCKVECTOR (s);
|
||
b = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
|
||
if (BLOCK_START (b) <= BLOCK_START (block)
|
||
&& BLOCK_END (b) > BLOCK_START (block))
|
||
{
|
||
sym = lookup_block_symbol (b, name, VAR_NAMESPACE);
|
||
if (sym)
|
||
{
|
||
block_found = b;
|
||
if (symtab != NULL)
|
||
*symtab = s;
|
||
return sym;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
|
||
/* C++: If requested to do so by the caller,
|
||
check to see if NAME is a field of `this'. */
|
||
if (is_a_field_of_this)
|
||
{
|
||
struct value *v = value_of_this (0);
|
||
|
||
*is_a_field_of_this = 0;
|
||
if (v && check_field (v, name))
|
||
{
|
||
*is_a_field_of_this = 1;
|
||
if (symtab != NULL)
|
||
*symtab = NULL;
|
||
return 0;
|
||
}
|
||
}
|
||
|
||
/* Now search all global blocks. Do the symtab's first, then
|
||
check the psymtab's */
|
||
|
||
ALL_SYMTABS (objfile, s)
|
||
{
|
||
bv = BLOCKVECTOR (s);
|
||
block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
|
||
sym = lookup_block_symbol (block, name, namespace);
|
||
if (sym)
|
||
{
|
||
block_found = block;
|
||
if (symtab != NULL)
|
||
*symtab = s;
|
||
return sym;
|
||
}
|
||
}
|
||
|
||
/* Check for the possibility of the symbol being a function or
|
||
a mangled variable that is stored in one of the minimal symbol tables.
|
||
Eventually, all global symbols might be resolved in this way. */
|
||
|
||
if (namespace == VAR_NAMESPACE)
|
||
{
|
||
msymbol = lookup_minimal_symbol (name, NULL, NULL);
|
||
if (msymbol != NULL)
|
||
{
|
||
s = find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol));
|
||
if (s != NULL)
|
||
{
|
||
/* This is a function which has a symtab for its address. */
|
||
bv = BLOCKVECTOR (s);
|
||
block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
|
||
sym = lookup_block_symbol (block, SYMBOL_NAME (msymbol),
|
||
namespace);
|
||
/* We kept static functions in minimal symbol table as well as
|
||
in static scope. We want to find them in the symbol table. */
|
||
if (!sym) {
|
||
block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
|
||
sym = lookup_block_symbol (block, SYMBOL_NAME (msymbol),
|
||
namespace);
|
||
}
|
||
|
||
/* sym == 0 if symbol was found in the minimal symbol table
|
||
but not in the symtab.
|
||
Return 0 to use the msymbol definition of "foo_".
|
||
|
||
This happens for Fortran "foo_" symbols,
|
||
which are "foo" in the symtab.
|
||
|
||
This can also happen if "asm" is used to make a
|
||
regular symbol but not a debugging symbol, e.g.
|
||
asm(".globl _main");
|
||
asm("_main:");
|
||
*/
|
||
|
||
if (symtab != NULL)
|
||
*symtab = s;
|
||
return sym;
|
||
}
|
||
else if (MSYMBOL_TYPE (msymbol) != mst_text
|
||
&& MSYMBOL_TYPE (msymbol) != mst_file_text
|
||
&& !STREQ (name, SYMBOL_NAME (msymbol)))
|
||
{
|
||
/* This is a mangled variable, look it up by its
|
||
mangled name. */
|
||
return lookup_symbol (SYMBOL_NAME (msymbol), block,
|
||
namespace, is_a_field_of_this, symtab);
|
||
}
|
||
/* There are no debug symbols for this file, or we are looking
|
||
for an unmangled variable.
|
||
Try to find a matching static symbol below. */
|
||
}
|
||
}
|
||
|
||
ALL_PSYMTABS (objfile, ps)
|
||
{
|
||
if (!ps->readin && lookup_partial_symbol (ps, name, 1, namespace))
|
||
{
|
||
s = PSYMTAB_TO_SYMTAB(ps);
|
||
bv = BLOCKVECTOR (s);
|
||
block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
|
||
sym = lookup_block_symbol (block, name, namespace);
|
||
if (!sym)
|
||
error ("Internal: global symbol `%s' found in %s psymtab but not in symtab", name, ps->filename);
|
||
if (symtab != NULL)
|
||
*symtab = s;
|
||
return sym;
|
||
}
|
||
}
|
||
|
||
/* Now search all per-file blocks.
|
||
Not strictly correct, but more useful than an error.
|
||
Do the symtabs first, then check the psymtabs */
|
||
|
||
ALL_SYMTABS (objfile, s)
|
||
{
|
||
bv = BLOCKVECTOR (s);
|
||
block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
|
||
sym = lookup_block_symbol (block, name, namespace);
|
||
if (sym)
|
||
{
|
||
block_found = block;
|
||
if (symtab != NULL)
|
||
*symtab = s;
|
||
return sym;
|
||
}
|
||
}
|
||
|
||
ALL_PSYMTABS (objfile, ps)
|
||
{
|
||
if (!ps->readin && lookup_partial_symbol (ps, name, 0, namespace))
|
||
{
|
||
s = PSYMTAB_TO_SYMTAB(ps);
|
||
bv = BLOCKVECTOR (s);
|
||
block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
|
||
sym = lookup_block_symbol (block, name, namespace);
|
||
if (!sym)
|
||
error ("Internal: static symbol `%s' found in %s psymtab but not in symtab", name, ps->filename);
|
||
if (symtab != NULL)
|
||
*symtab = s;
|
||
return sym;
|
||
}
|
||
}
|
||
|
||
if (symtab != NULL)
|
||
*symtab = NULL;
|
||
return 0;
|
||
}
|
||
|
||
/* Look, in partial_symtab PST, for symbol NAME. Check the global
|
||
symbols if GLOBAL, the static symbols if not */
|
||
|
||
static struct partial_symbol *
|
||
lookup_partial_symbol (pst, name, global, namespace)
|
||
struct partial_symtab *pst;
|
||
const char *name;
|
||
int global;
|
||
namespace_enum namespace;
|
||
{
|
||
struct partial_symbol **start, **psym;
|
||
struct partial_symbol **top, **bottom, **center;
|
||
int length = (global ? pst->n_global_syms : pst->n_static_syms);
|
||
int do_linear_search = 1;
|
||
|
||
if (length == 0)
|
||
{
|
||
return (NULL);
|
||
}
|
||
|
||
start = (global ?
|
||
pst->objfile->global_psymbols.list + pst->globals_offset :
|
||
pst->objfile->static_psymbols.list + pst->statics_offset );
|
||
|
||
if (global) /* This means we can use a binary search. */
|
||
{
|
||
do_linear_search = 0;
|
||
|
||
/* Binary search. This search is guaranteed to end with center
|
||
pointing at the earliest partial symbol with the correct
|
||
name. At that point *all* partial symbols with that name
|
||
will be checked against the correct namespace. */
|
||
|
||
bottom = start;
|
||
top = start + length - 1;
|
||
while (top > bottom)
|
||
{
|
||
center = bottom + (top - bottom) / 2;
|
||
if (!(center < top))
|
||
abort ();
|
||
if (!do_linear_search && SYMBOL_LANGUAGE (*center) == language_cplus)
|
||
{
|
||
do_linear_search = 1;
|
||
}
|
||
if (STRCMP (SYMBOL_NAME (*center), name) >= 0)
|
||
{
|
||
top = center;
|
||
}
|
||
else
|
||
{
|
||
bottom = center + 1;
|
||
}
|
||
}
|
||
if (!(top == bottom))
|
||
abort ();
|
||
while (STREQ (SYMBOL_NAME (*top), name))
|
||
{
|
||
if (SYMBOL_NAMESPACE (*top) == namespace)
|
||
{
|
||
return (*top);
|
||
}
|
||
top ++;
|
||
}
|
||
}
|
||
|
||
/* Can't use a binary search or else we found during the binary search that
|
||
we should also do a linear search. */
|
||
|
||
if (do_linear_search)
|
||
{
|
||
for (psym = start; psym < start + length; psym++)
|
||
{
|
||
if (namespace == SYMBOL_NAMESPACE (*psym))
|
||
{
|
||
if (SYMBOL_MATCHES_NAME (*psym, name))
|
||
{
|
||
return (*psym);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
return (NULL);
|
||
}
|
||
|
||
/* Find the psymtab containing main(). */
|
||
/* FIXME: What about languages without main() or specially linked
|
||
executables that have no main() ? */
|
||
|
||
struct partial_symtab *
|
||
find_main_psymtab ()
|
||
{
|
||
register struct partial_symtab *pst;
|
||
register struct objfile *objfile;
|
||
|
||
ALL_PSYMTABS (objfile, pst)
|
||
{
|
||
if (lookup_partial_symbol (pst, "main", 1, VAR_NAMESPACE))
|
||
{
|
||
return (pst);
|
||
}
|
||
}
|
||
return (NULL);
|
||
}
|
||
|
||
/* Search BLOCK for symbol NAME in NAMESPACE.
|
||
|
||
Note that if NAME is the demangled form of a C++ symbol, we will fail
|
||
to find a match during the binary search of the non-encoded names, but
|
||
for now we don't worry about the slight inefficiency of looking for
|
||
a match we'll never find, since it will go pretty quick. Once the
|
||
binary search terminates, we drop through and do a straight linear
|
||
search on the symbols. Each symbol which is marked as being a C++
|
||
symbol (language_cplus set) has both the encoded and non-encoded names
|
||
tested for a match. */
|
||
|
||
struct symbol *
|
||
lookup_block_symbol (block, name, namespace)
|
||
register const struct block *block;
|
||
const char *name;
|
||
const namespace_enum namespace;
|
||
{
|
||
register int bot, top, inc;
|
||
register struct symbol *sym;
|
||
register struct symbol *sym_found = NULL;
|
||
register int do_linear_search = 1;
|
||
|
||
/* If the blocks's symbols were sorted, start with a binary search. */
|
||
|
||
if (BLOCK_SHOULD_SORT (block))
|
||
{
|
||
/* Reset the linear search flag so if the binary search fails, we
|
||
won't do the linear search once unless we find some reason to
|
||
do so, such as finding a C++ symbol during the binary search.
|
||
Note that for C++ modules, ALL the symbols in a block should
|
||
end up marked as C++ symbols. */
|
||
|
||
do_linear_search = 0;
|
||
top = BLOCK_NSYMS (block);
|
||
bot = 0;
|
||
|
||
/* Advance BOT to not far before the first symbol whose name is NAME. */
|
||
|
||
while (1)
|
||
{
|
||
inc = (top - bot + 1);
|
||
/* No need to keep binary searching for the last few bits worth. */
|
||
if (inc < 4)
|
||
{
|
||
break;
|
||
}
|
||
inc = (inc >> 1) + bot;
|
||
sym = BLOCK_SYM (block, inc);
|
||
if (!do_linear_search && SYMBOL_LANGUAGE (sym) == language_cplus)
|
||
{
|
||
do_linear_search = 1;
|
||
}
|
||
if (SYMBOL_NAME (sym)[0] < name[0])
|
||
{
|
||
bot = inc;
|
||
}
|
||
else if (SYMBOL_NAME (sym)[0] > name[0])
|
||
{
|
||
top = inc;
|
||
}
|
||
else if (STRCMP (SYMBOL_NAME (sym), name) < 0)
|
||
{
|
||
bot = inc;
|
||
}
|
||
else
|
||
{
|
||
top = inc;
|
||
}
|
||
}
|
||
|
||
/* Now scan forward until we run out of symbols, find one whose
|
||
name is greater than NAME, or find one we want. If there is
|
||
more than one symbol with the right name and namespace, we
|
||
return the first one; I believe it is now impossible for us
|
||
to encounter two symbols with the same name and namespace
|
||
here, because blocks containing argument symbols are no
|
||
longer sorted. */
|
||
|
||
top = BLOCK_NSYMS (block);
|
||
while (bot < top)
|
||
{
|
||
sym = BLOCK_SYM (block, bot);
|
||
inc = SYMBOL_NAME (sym)[0] - name[0];
|
||
if (inc == 0)
|
||
{
|
||
inc = STRCMP (SYMBOL_NAME (sym), name);
|
||
}
|
||
if (inc == 0 && SYMBOL_NAMESPACE (sym) == namespace)
|
||
{
|
||
return (sym);
|
||
}
|
||
if (inc > 0)
|
||
{
|
||
break;
|
||
}
|
||
bot++;
|
||
}
|
||
}
|
||
|
||
/* Here if block isn't sorted, or we fail to find a match during the
|
||
binary search above. If during the binary search above, we find a
|
||
symbol which is a C++ symbol, then we have re-enabled the linear
|
||
search flag which was reset when starting the binary search.
|
||
|
||
This loop is equivalent to the loop above, but hacked greatly for speed.
|
||
|
||
Note that parameter symbols do not always show up last in the
|
||
list; this loop makes sure to take anything else other than
|
||
parameter symbols first; it only uses parameter symbols as a
|
||
last resort. Note that this only takes up extra computation
|
||
time on a match. */
|
||
|
||
if (do_linear_search)
|
||
{
|
||
top = BLOCK_NSYMS (block);
|
||
bot = 0;
|
||
while (bot < top)
|
||
{
|
||
sym = BLOCK_SYM (block, bot);
|
||
if (SYMBOL_NAMESPACE (sym) == namespace &&
|
||
SYMBOL_MATCHES_NAME (sym, name))
|
||
{
|
||
sym_found = sym;
|
||
if (SYMBOL_CLASS (sym) != LOC_ARG &&
|
||
SYMBOL_CLASS (sym) != LOC_LOCAL_ARG &&
|
||
SYMBOL_CLASS (sym) != LOC_REF_ARG &&
|
||
SYMBOL_CLASS (sym) != LOC_REGPARM &&
|
||
SYMBOL_CLASS (sym) != LOC_REGPARM_ADDR &&
|
||
SYMBOL_CLASS (sym) != LOC_BASEREG_ARG)
|
||
{
|
||
break;
|
||
}
|
||
}
|
||
bot++;
|
||
}
|
||
}
|
||
return (sym_found); /* Will be NULL if not found. */
|
||
}
|
||
|
||
|
||
/* Return the symbol for the function which contains a specified
|
||
lexical block, described by a struct block BL. */
|
||
|
||
struct symbol *
|
||
block_function (bl)
|
||
struct block *bl;
|
||
{
|
||
while (BLOCK_FUNCTION (bl) == 0 && BLOCK_SUPERBLOCK (bl) != 0)
|
||
bl = BLOCK_SUPERBLOCK (bl);
|
||
|
||
return BLOCK_FUNCTION (bl);
|
||
}
|
||
|
||
/* Find the symtab associated with PC. Look through the psymtabs and read in
|
||
another symtab if necessary. */
|
||
|
||
struct symtab *
|
||
find_pc_symtab (pc)
|
||
register CORE_ADDR pc;
|
||
{
|
||
register struct block *b;
|
||
struct blockvector *bv;
|
||
register struct symtab *s = NULL;
|
||
register struct symtab *best_s = NULL;
|
||
register struct partial_symtab *ps;
|
||
register struct objfile *objfile;
|
||
int distance = 0;
|
||
|
||
/* Search all symtabs for the one whose file contains our address, and which
|
||
is the smallest of all the ones containing the address. This is designed
|
||
to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000
|
||
and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from
|
||
0x1000-0x4000, but for address 0x2345 we want to return symtab b.
|
||
|
||
This happens for native ecoff format, where code from included files
|
||
gets its own symtab. The symtab for the included file should have
|
||
been read in already via the dependency mechanism.
|
||
It might be swifter to create several symtabs with the same name
|
||
like xcoff does (I'm not sure).
|
||
|
||
It also happens for objfiles that have their functions reordered.
|
||
For these, the symtab we are looking for is not necessarily read in. */
|
||
|
||
ALL_SYMTABS (objfile, s)
|
||
{
|
||
bv = BLOCKVECTOR (s);
|
||
b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
|
||
if (BLOCK_START (b) <= pc
|
||
&& BLOCK_END (b) > pc
|
||
&& (distance == 0
|
||
|| BLOCK_END (b) - BLOCK_START (b) < distance))
|
||
{
|
||
/* For an objfile that has its functions reordered,
|
||
find_pc_psymtab will find the proper partial symbol table
|
||
and we simply return its corresponding symtab. */
|
||
if ((objfile->flags & OBJF_REORDERED) && objfile->psymtabs)
|
||
{
|
||
ps = find_pc_psymtab (pc);
|
||
if (ps)
|
||
s = PSYMTAB_TO_SYMTAB (ps);
|
||
else
|
||
s = NULL;
|
||
return (s);
|
||
}
|
||
distance = BLOCK_END (b) - BLOCK_START (b);
|
||
best_s = s;
|
||
}
|
||
}
|
||
|
||
if (best_s != NULL)
|
||
return(best_s);
|
||
|
||
s = NULL;
|
||
ps = find_pc_psymtab (pc);
|
||
if (ps)
|
||
{
|
||
if (ps->readin)
|
||
/* Might want to error() here (in case symtab is corrupt and
|
||
will cause a core dump), but maybe we can successfully
|
||
continue, so let's not. */
|
||
/* FIXME-32x64: assumes pc fits in a long */
|
||
warning ("\
|
||
(Internal error: pc 0x%lx in read in psymtab, but not in symtab.)\n",
|
||
(unsigned long) pc);
|
||
s = PSYMTAB_TO_SYMTAB (ps);
|
||
}
|
||
return (s);
|
||
}
|
||
|
||
#if 0
|
||
|
||
/* Find the closest symbol value (of any sort -- function or variable)
|
||
for a given address value. Slow but complete. (currently unused,
|
||
mainly because it is too slow. We could fix it if each symtab and
|
||
psymtab had contained in it the addresses ranges of each of its
|
||
sections, which also would be required to make things like "info
|
||
line *0x2345" cause psymtabs to be converted to symtabs). */
|
||
|
||
struct symbol *
|
||
find_addr_symbol (addr, symtabp, symaddrp)
|
||
CORE_ADDR addr;
|
||
struct symtab **symtabp;
|
||
CORE_ADDR *symaddrp;
|
||
{
|
||
struct symtab *symtab, *best_symtab;
|
||
struct objfile *objfile;
|
||
register int bot, top;
|
||
register struct symbol *sym;
|
||
register CORE_ADDR sym_addr;
|
||
struct block *block;
|
||
int blocknum;
|
||
|
||
/* Info on best symbol seen so far */
|
||
|
||
register CORE_ADDR best_sym_addr = 0;
|
||
struct symbol *best_sym = 0;
|
||
|
||
/* FIXME -- we should pull in all the psymtabs, too! */
|
||
ALL_SYMTABS (objfile, symtab)
|
||
{
|
||
/* Search the global and static blocks in this symtab for
|
||
the closest symbol-address to the desired address. */
|
||
|
||
for (blocknum = GLOBAL_BLOCK; blocknum <= STATIC_BLOCK; blocknum++)
|
||
{
|
||
QUIT;
|
||
block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (symtab), blocknum);
|
||
top = BLOCK_NSYMS (block);
|
||
for (bot = 0; bot < top; bot++)
|
||
{
|
||
sym = BLOCK_SYM (block, bot);
|
||
switch (SYMBOL_CLASS (sym))
|
||
{
|
||
case LOC_STATIC:
|
||
case LOC_LABEL:
|
||
sym_addr = SYMBOL_VALUE_ADDRESS (sym);
|
||
break;
|
||
|
||
case LOC_BLOCK:
|
||
sym_addr = BLOCK_START (SYMBOL_BLOCK_VALUE (sym));
|
||
break;
|
||
|
||
default:
|
||
continue;
|
||
}
|
||
|
||
if (sym_addr <= addr)
|
||
if (sym_addr > best_sym_addr)
|
||
{
|
||
/* Quit if we found an exact match. */
|
||
best_sym = sym;
|
||
best_sym_addr = sym_addr;
|
||
best_symtab = symtab;
|
||
if (sym_addr == addr)
|
||
goto done;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
done:
|
||
if (symtabp)
|
||
*symtabp = best_symtab;
|
||
if (symaddrp)
|
||
*symaddrp = best_sym_addr;
|
||
return best_sym;
|
||
}
|
||
#endif /* 0 */
|
||
|
||
/* Find the source file and line number for a given PC value.
|
||
Return a structure containing a symtab pointer, a line number,
|
||
and a pc range for the entire source line.
|
||
The value's .pc field is NOT the specified pc.
|
||
NOTCURRENT nonzero means, if specified pc is on a line boundary,
|
||
use the line that ends there. Otherwise, in that case, the line
|
||
that begins there is used. */
|
||
|
||
/* The big complication here is that a line may start in one file, and end just
|
||
before the start of another file. This usually occurs when you #include
|
||
code in the middle of a subroutine. To properly find the end of a line's PC
|
||
range, we must search all symtabs associated with this compilation unit, and
|
||
find the one whose first PC is closer than that of the next line in this
|
||
symtab. */
|
||
|
||
/* If it's worth the effort, we could be using a binary search. */
|
||
|
||
struct symtab_and_line
|
||
find_pc_line (pc, notcurrent)
|
||
CORE_ADDR pc;
|
||
int notcurrent;
|
||
{
|
||
struct symtab *s;
|
||
register struct linetable *l;
|
||
register int len;
|
||
register int i;
|
||
register struct linetable_entry *item;
|
||
struct symtab_and_line val;
|
||
struct blockvector *bv;
|
||
|
||
/* Info on best line seen so far, and where it starts, and its file. */
|
||
|
||
struct linetable_entry *best = NULL;
|
||
CORE_ADDR best_end = 0;
|
||
struct symtab *best_symtab = 0;
|
||
|
||
/* Store here the first line number
|
||
of a file which contains the line at the smallest pc after PC.
|
||
If we don't find a line whose range contains PC,
|
||
we will use a line one less than this,
|
||
with a range from the start of that file to the first line's pc. */
|
||
struct linetable_entry *alt = NULL;
|
||
struct symtab *alt_symtab = 0;
|
||
|
||
/* Info on best line seen in this file. */
|
||
|
||
struct linetable_entry *prev;
|
||
|
||
/* If this pc is not from the current frame,
|
||
it is the address of the end of a call instruction.
|
||
Quite likely that is the start of the following statement.
|
||
But what we want is the statement containing the instruction.
|
||
Fudge the pc to make sure we get that. */
|
||
|
||
if (notcurrent) pc -= 1;
|
||
|
||
s = find_pc_symtab (pc);
|
||
if (!s)
|
||
{
|
||
val.symtab = 0;
|
||
val.line = 0;
|
||
val.pc = pc;
|
||
val.end = 0;
|
||
return val;
|
||
}
|
||
|
||
bv = BLOCKVECTOR (s);
|
||
|
||
/* Look at all the symtabs that share this blockvector.
|
||
They all have the same apriori range, that we found was right;
|
||
but they have different line tables. */
|
||
|
||
for (; s && BLOCKVECTOR (s) == bv; s = s->next)
|
||
{
|
||
/* Find the best line in this symtab. */
|
||
l = LINETABLE (s);
|
||
if (!l)
|
||
continue;
|
||
len = l->nitems;
|
||
if (len <= 0)
|
||
{
|
||
/* I think len can be zero if the symtab lacks line numbers
|
||
(e.g. gcc -g1). (Either that or the LINETABLE is NULL;
|
||
I'm not sure which, and maybe it depends on the symbol
|
||
reader). */
|
||
continue;
|
||
}
|
||
|
||
prev = NULL;
|
||
item = l->item; /* Get first line info */
|
||
|
||
/* Is this file's first line closer than the first lines of other files?
|
||
If so, record this file, and its first line, as best alternate. */
|
||
if (item->pc > pc && (!alt || item->pc < alt->pc))
|
||
{
|
||
alt = item;
|
||
alt_symtab = s;
|
||
}
|
||
|
||
for (i = 0; i < len; i++, item++)
|
||
{
|
||
/* Return the last line that did not start after PC. */
|
||
if (item->pc > pc)
|
||
break;
|
||
|
||
prev = item;
|
||
}
|
||
|
||
/* At this point, prev points at the line whose start addr is <= pc, and
|
||
item points at the next line. If we ran off the end of the linetable
|
||
(pc >= start of the last line), then prev == item. If pc < start of
|
||
the first line, prev will not be set. */
|
||
|
||
/* Is this file's best line closer than the best in the other files?
|
||
If so, record this file, and its best line, as best so far. */
|
||
|
||
if (prev && (!best || prev->pc > best->pc))
|
||
{
|
||
best = prev;
|
||
best_symtab = s;
|
||
/* If another line is in the linetable, and its PC is closer
|
||
than the best_end we currently have, take it as best_end. */
|
||
if (i < len && (best_end == 0 || best_end > item->pc))
|
||
best_end = item->pc;
|
||
}
|
||
}
|
||
|
||
if (!best_symtab)
|
||
{
|
||
if (!alt_symtab)
|
||
{ /* If we didn't find any line # info, just
|
||
return zeros. */
|
||
val.symtab = 0;
|
||
val.line = 0;
|
||
val.pc = pc;
|
||
val.end = 0;
|
||
}
|
||
else
|
||
{
|
||
val.symtab = alt_symtab;
|
||
val.line = alt->line - 1;
|
||
|
||
/* Don't return line 0, that means that we didn't find the line. */
|
||
if (val.line == 0) ++val.line;
|
||
|
||
val.pc = BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK));
|
||
val.end = alt->pc;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
val.symtab = best_symtab;
|
||
val.line = best->line;
|
||
val.pc = best->pc;
|
||
if (best_end && (!alt || best_end < alt->pc))
|
||
val.end = best_end;
|
||
else if (alt)
|
||
val.end = alt->pc;
|
||
else
|
||
val.end = BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK));
|
||
}
|
||
return val;
|
||
}
|
||
|
||
static int find_line_symtab PARAMS ((struct symtab *, int, struct linetable **,
|
||
int *, int *));
|
||
|
||
/* Find line number LINE in any symtab whose name is the same as
|
||
SYMTAB.
|
||
|
||
If found, return 1, set *LINETABLE to the linetable in which it was
|
||
found, set *INDEX to the index in the linetable of the best entry
|
||
found, and set *EXACT_MATCH nonzero if the value returned is an
|
||
exact match.
|
||
|
||
If not found, return 0. */
|
||
|
||
static int
|
||
find_line_symtab (symtab, line, linetable, index, exact_match)
|
||
struct symtab *symtab;
|
||
int line;
|
||
struct linetable **linetable;
|
||
int *index;
|
||
int *exact_match;
|
||
{
|
||
int exact;
|
||
|
||
/* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE
|
||
so far seen. */
|
||
|
||
int best_index;
|
||
struct linetable *best_linetable;
|
||
|
||
/* First try looking it up in the given symtab. */
|
||
best_linetable = LINETABLE (symtab);
|
||
best_index = find_line_common (best_linetable, line, &exact);
|
||
if (best_index < 0 || !exact)
|
||
{
|
||
/* Didn't find an exact match. So we better keep looking for
|
||
another symtab with the same name. In the case of xcoff,
|
||
multiple csects for one source file (produced by IBM's FORTRAN
|
||
compiler) produce multiple symtabs (this is unavoidable
|
||
assuming csects can be at arbitrary places in memory and that
|
||
the GLOBAL_BLOCK of a symtab has a begin and end address). */
|
||
|
||
/* BEST is the smallest linenumber > LINE so far seen,
|
||
or 0 if none has been seen so far.
|
||
BEST_INDEX and BEST_LINETABLE identify the item for it. */
|
||
int best;
|
||
|
||
struct objfile *objfile;
|
||
struct symtab *s;
|
||
|
||
if (best_index >= 0)
|
||
best = best_linetable->item[best_index].line;
|
||
else
|
||
best = 0;
|
||
|
||
ALL_SYMTABS (objfile, s)
|
||
{
|
||
struct linetable *l;
|
||
int ind;
|
||
|
||
if (!STREQ (symtab->filename, s->filename))
|
||
continue;
|
||
l = LINETABLE (s);
|
||
ind = find_line_common (l, line, &exact);
|
||
if (ind >= 0)
|
||
{
|
||
if (exact)
|
||
{
|
||
best_index = ind;
|
||
best_linetable = l;
|
||
goto done;
|
||
}
|
||
if (best == 0 || l->item[ind].line < best)
|
||
{
|
||
best = l->item[ind].line;
|
||
best_index = ind;
|
||
best_linetable = l;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
done:
|
||
if (best_index < 0)
|
||
return 0;
|
||
|
||
if (index)
|
||
*index = best_index;
|
||
if (linetable)
|
||
*linetable = best_linetable;
|
||
if (exact_match)
|
||
*exact_match = exact;
|
||
return 1;
|
||
}
|
||
|
||
/* Find the PC value for a given source file and line number.
|
||
Returns zero for invalid line number.
|
||
The source file is specified with a struct symtab. */
|
||
|
||
CORE_ADDR
|
||
find_line_pc (symtab, line)
|
||
struct symtab *symtab;
|
||
int line;
|
||
{
|
||
struct linetable *l;
|
||
int ind;
|
||
|
||
if (symtab == 0)
|
||
return 0;
|
||
if (find_line_symtab (symtab, line, &l, &ind, NULL))
|
||
return l->item[ind].pc;
|
||
else
|
||
return 0;
|
||
}
|
||
|
||
/* Find the range of pc values in a line.
|
||
Store the starting pc of the line into *STARTPTR
|
||
and the ending pc (start of next line) into *ENDPTR.
|
||
Returns 1 to indicate success.
|
||
Returns 0 if could not find the specified line. */
|
||
|
||
int
|
||
find_line_pc_range (sal, startptr, endptr)
|
||
struct symtab_and_line sal;
|
||
CORE_ADDR *startptr, *endptr;
|
||
{
|
||
CORE_ADDR startaddr;
|
||
struct symtab_and_line found_sal;
|
||
|
||
startaddr = sal.pc;
|
||
if (startaddr == 0)
|
||
{
|
||
startaddr = find_line_pc (sal.symtab, sal.line);
|
||
}
|
||
if (startaddr == 0)
|
||
return 0;
|
||
|
||
/* This whole function is based on address. For example, if line 10 has
|
||
two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then
|
||
"info line *0x123" should say the line goes from 0x100 to 0x200
|
||
and "info line *0x355" should say the line goes from 0x300 to 0x400.
|
||
This also insures that we never give a range like "starts at 0x134
|
||
and ends at 0x12c". */
|
||
|
||
found_sal = find_pc_line (startaddr, 0);
|
||
if (found_sal.line != sal.line)
|
||
{
|
||
/* The specified line (sal) has zero bytes. */
|
||
*startptr = found_sal.pc;
|
||
*endptr = found_sal.pc;
|
||
}
|
||
else
|
||
{
|
||
*startptr = found_sal.pc;
|
||
*endptr = found_sal.end;
|
||
}
|
||
return 1;
|
||
}
|
||
|
||
/* Given a line table and a line number, return the index into the line
|
||
table for the pc of the nearest line whose number is >= the specified one.
|
||
Return -1 if none is found. The value is >= 0 if it is an index.
|
||
|
||
Set *EXACT_MATCH nonzero if the value returned is an exact match. */
|
||
|
||
static int
|
||
find_line_common (l, lineno, exact_match)
|
||
register struct linetable *l;
|
||
register int lineno;
|
||
int *exact_match;
|
||
{
|
||
register int i;
|
||
register int len;
|
||
|
||
/* BEST is the smallest linenumber > LINENO so far seen,
|
||
or 0 if none has been seen so far.
|
||
BEST_INDEX identifies the item for it. */
|
||
|
||
int best_index = -1;
|
||
int best = 0;
|
||
|
||
if (lineno <= 0)
|
||
return -1;
|
||
if (l == 0)
|
||
return -1;
|
||
|
||
len = l->nitems;
|
||
for (i = 0; i < len; i++)
|
||
{
|
||
register struct linetable_entry *item = &(l->item[i]);
|
||
|
||
if (item->line == lineno)
|
||
{
|
||
/* Return the first (lowest address) entry which matches. */
|
||
*exact_match = 1;
|
||
return i;
|
||
}
|
||
|
||
if (item->line > lineno && (best == 0 || item->line < best))
|
||
{
|
||
best = item->line;
|
||
best_index = i;
|
||
}
|
||
}
|
||
|
||
/* If we got here, we didn't get an exact match. */
|
||
|
||
*exact_match = 0;
|
||
return best_index;
|
||
}
|
||
|
||
int
|
||
find_pc_line_pc_range (pc, startptr, endptr)
|
||
CORE_ADDR pc;
|
||
CORE_ADDR *startptr, *endptr;
|
||
{
|
||
struct symtab_and_line sal;
|
||
sal = find_pc_line (pc, 0);
|
||
*startptr = sal.pc;
|
||
*endptr = sal.end;
|
||
return sal.symtab != 0;
|
||
}
|
||
|
||
/* Given a function symbol SYM, find the symtab and line for the start
|
||
of the function.
|
||
If the argument FUNFIRSTLINE is nonzero, we want the first line
|
||
of real code inside the function. */
|
||
|
||
static struct symtab_and_line
|
||
find_function_start_sal PARAMS ((struct symbol *sym, int));
|
||
|
||
static struct symtab_and_line
|
||
find_function_start_sal (sym, funfirstline)
|
||
struct symbol *sym;
|
||
int funfirstline;
|
||
{
|
||
CORE_ADDR pc;
|
||
struct symtab_and_line sal;
|
||
|
||
pc = BLOCK_START (SYMBOL_BLOCK_VALUE (sym));
|
||
if (funfirstline)
|
||
{
|
||
pc += FUNCTION_START_OFFSET;
|
||
SKIP_PROLOGUE (pc);
|
||
}
|
||
sal = find_pc_line (pc, 0);
|
||
|
||
#ifdef PROLOGUE_FIRSTLINE_OVERLAP
|
||
/* Convex: no need to suppress code on first line, if any */
|
||
sal.pc = pc;
|
||
#else
|
||
/* Check if SKIP_PROLOGUE left us in mid-line, and the next
|
||
line is still part of the same function. */
|
||
if (sal.pc != pc
|
||
&& BLOCK_START (SYMBOL_BLOCK_VALUE (sym)) <= sal.end
|
||
&& sal.end < BLOCK_END (SYMBOL_BLOCK_VALUE (sym)))
|
||
{
|
||
/* First pc of next line */
|
||
pc = sal.end;
|
||
/* Recalculate the line number (might not be N+1). */
|
||
sal = find_pc_line (pc, 0);
|
||
}
|
||
sal.pc = pc;
|
||
#endif
|
||
|
||
return sal;
|
||
}
|
||
|
||
/* If P is of the form "operator[ \t]+..." where `...' is
|
||
some legitimate operator text, return a pointer to the
|
||
beginning of the substring of the operator text.
|
||
Otherwise, return "". */
|
||
static char *
|
||
operator_chars (p, end)
|
||
char *p;
|
||
char **end;
|
||
{
|
||
*end = "";
|
||
if (strncmp (p, "operator", 8))
|
||
return *end;
|
||
p += 8;
|
||
|
||
/* Don't get faked out by `operator' being part of a longer
|
||
identifier. */
|
||
if (isalpha(*p) || *p == '_' || *p == '$' || *p == '\0')
|
||
return *end;
|
||
|
||
/* Allow some whitespace between `operator' and the operator symbol. */
|
||
while (*p == ' ' || *p == '\t')
|
||
p++;
|
||
|
||
/* Recognize 'operator TYPENAME'. */
|
||
|
||
if (isalpha(*p) || *p == '_' || *p == '$')
|
||
{
|
||
register char *q = p+1;
|
||
while (isalnum(*q) || *q == '_' || *q == '$')
|
||
q++;
|
||
*end = q;
|
||
return p;
|
||
}
|
||
|
||
switch (*p)
|
||
{
|
||
case '!':
|
||
case '=':
|
||
case '*':
|
||
case '/':
|
||
case '%':
|
||
case '^':
|
||
if (p[1] == '=')
|
||
*end = p+2;
|
||
else
|
||
*end = p+1;
|
||
return p;
|
||
case '<':
|
||
case '>':
|
||
case '+':
|
||
case '-':
|
||
case '&':
|
||
case '|':
|
||
if (p[1] == '=' || p[1] == p[0])
|
||
*end = p+2;
|
||
else
|
||
*end = p+1;
|
||
return p;
|
||
case '~':
|
||
case ',':
|
||
*end = p+1;
|
||
return p;
|
||
case '(':
|
||
if (p[1] != ')')
|
||
error ("`operator ()' must be specified without whitespace in `()'");
|
||
*end = p+2;
|
||
return p;
|
||
case '?':
|
||
if (p[1] != ':')
|
||
error ("`operator ?:' must be specified without whitespace in `?:'");
|
||
*end = p+2;
|
||
return p;
|
||
case '[':
|
||
if (p[1] != ']')
|
||
error ("`operator []' must be specified without whitespace in `[]'");
|
||
*end = p+2;
|
||
return p;
|
||
default:
|
||
error ("`operator %s' not supported", p);
|
||
break;
|
||
}
|
||
*end = "";
|
||
return *end;
|
||
}
|
||
|
||
/* Return the number of methods described for TYPE, including the
|
||
methods from types it derives from. This can't be done in the symbol
|
||
reader because the type of the baseclass might still be stubbed
|
||
when the definition of the derived class is parsed. */
|
||
|
||
static int total_number_of_methods PARAMS ((struct type *type));
|
||
|
||
static int
|
||
total_number_of_methods (type)
|
||
struct type *type;
|
||
{
|
||
int n;
|
||
int count;
|
||
|
||
CHECK_TYPEDEF (type);
|
||
count = TYPE_NFN_FIELDS_TOTAL (type);
|
||
|
||
for (n = 0; n < TYPE_N_BASECLASSES (type); n++)
|
||
count += total_number_of_methods (TYPE_BASECLASS (type, n));
|
||
|
||
return count;
|
||
}
|
||
|
||
/* Recursive helper function for decode_line_1.
|
||
Look for methods named NAME in type T.
|
||
Return number of matches.
|
||
Put matches in SYM_ARR, which should have been allocated with
|
||
a size of total_number_of_methods (T) * sizeof (struct symbol *).
|
||
Note that this function is g++ specific. */
|
||
|
||
int
|
||
find_methods (t, name, sym_arr)
|
||
struct type *t;
|
||
char *name;
|
||
struct symbol **sym_arr;
|
||
{
|
||
int i1 = 0;
|
||
int ibase;
|
||
struct symbol *sym_class;
|
||
char *class_name = type_name_no_tag (t);
|
||
/* Ignore this class if it doesn't have a name. This is ugly, but
|
||
unless we figure out how to get the physname without the name of
|
||
the class, then the loop can't do any good. */
|
||
if (class_name
|
||
&& (sym_class = lookup_symbol (class_name,
|
||
(struct block *)NULL,
|
||
STRUCT_NAMESPACE,
|
||
(int *)NULL,
|
||
(struct symtab **)NULL)))
|
||
{
|
||
int method_counter;
|
||
/* FIXME: Shouldn't this just be CHECK_TYPEDEF (t)? */
|
||
t = SYMBOL_TYPE (sym_class);
|
||
for (method_counter = TYPE_NFN_FIELDS (t) - 1;
|
||
method_counter >= 0;
|
||
--method_counter)
|
||
{
|
||
int field_counter;
|
||
struct fn_field *f = TYPE_FN_FIELDLIST1 (t, method_counter);
|
||
char *method_name = TYPE_FN_FIELDLIST_NAME (t, method_counter);
|
||
char dem_opname[64];
|
||
|
||
if (strncmp(method_name, "__", 2)==0 ||
|
||
strncmp(method_name, "op", 2)==0 ||
|
||
strncmp(method_name, "type", 4)==0 )
|
||
{
|
||
if (cplus_demangle_opname(method_name, dem_opname, DMGL_ANSI))
|
||
method_name = dem_opname;
|
||
else if (cplus_demangle_opname(method_name, dem_opname, 0))
|
||
method_name = dem_opname;
|
||
}
|
||
if (STREQ (name, method_name))
|
||
/* Find all the fields with that name. */
|
||
for (field_counter = TYPE_FN_FIELDLIST_LENGTH (t, method_counter) - 1;
|
||
field_counter >= 0;
|
||
--field_counter)
|
||
{
|
||
char *phys_name;
|
||
if (TYPE_FN_FIELD_STUB (f, field_counter))
|
||
check_stub_method (t, method_counter, field_counter);
|
||
phys_name = TYPE_FN_FIELD_PHYSNAME (f, field_counter);
|
||
/* Destructor is handled by caller, dont add it to the list */
|
||
if (DESTRUCTOR_PREFIX_P (phys_name))
|
||
continue;
|
||
|
||
/* FIXME: Why are we looking this up in the
|
||
SYMBOL_BLOCK_VALUE (sym_class)? It is intended as a hook
|
||
for nested types? If so, it should probably hook to the
|
||
type, not the symbol. mipsread.c is the only symbol
|
||
reader which sets the SYMBOL_BLOCK_VALUE for types, and
|
||
this is not documented in symtab.h. -26Aug93. */
|
||
|
||
sym_arr[i1] = lookup_symbol (phys_name,
|
||
SYMBOL_BLOCK_VALUE (sym_class),
|
||
VAR_NAMESPACE,
|
||
(int *) NULL,
|
||
(struct symtab **) NULL);
|
||
if (sym_arr[i1]) i1++;
|
||
else
|
||
{
|
||
fputs_filtered("(Cannot find method ", gdb_stdout);
|
||
fprintf_symbol_filtered (gdb_stdout, phys_name,
|
||
language_cplus,
|
||
DMGL_PARAMS | DMGL_ANSI);
|
||
fputs_filtered(" - possibly inlined.)\n", gdb_stdout);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Only search baseclasses if there is no match yet, since names in
|
||
derived classes override those in baseclasses.
|
||
|
||
FIXME: The above is not true; it is only true of member functions
|
||
if they have the same number of arguments (??? - section 13.1 of the
|
||
ARM says the function members are not in the same scope but doesn't
|
||
really spell out the rules in a way I understand. In any case, if
|
||
the number of arguments differ this is a case in which we can overload
|
||
rather than hiding without any problem, and gcc 2.4.5 does overload
|
||
rather than hiding in this case). */
|
||
|
||
if (i1)
|
||
return i1;
|
||
for (ibase = 0; ibase < TYPE_N_BASECLASSES (t); ibase++)
|
||
i1 += find_methods(TYPE_BASECLASS(t, ibase), name,
|
||
sym_arr + i1);
|
||
return i1;
|
||
}
|
||
|
||
/* Helper function for decode_line_1.
|
||
Build a canonical line spec in CANONICAL if it is non-NULL and if
|
||
the SAL has a symtab.
|
||
If SYMNAME is non-NULL the canonical line spec is `filename:symname'.
|
||
If SYMNAME is NULL the line number from SAL is used and the canonical
|
||
line spec is `filename:linenum'. */
|
||
|
||
static void
|
||
build_canonical_line_spec (sal, symname, canonical)
|
||
struct symtab_and_line *sal;
|
||
char *symname;
|
||
char ***canonical;
|
||
{
|
||
char **canonical_arr;
|
||
char *canonical_name;
|
||
char *filename;
|
||
struct symtab *s = sal->symtab;
|
||
|
||
if (s == (struct symtab *)NULL
|
||
|| s->filename == (char *)NULL
|
||
|| canonical == (char ***)NULL)
|
||
return;
|
||
|
||
canonical_arr = (char **) xmalloc (sizeof (char *));
|
||
*canonical = canonical_arr;
|
||
|
||
filename = s->filename;
|
||
if (symname != NULL)
|
||
{
|
||
canonical_name = xmalloc (strlen (filename) + strlen (symname) + 2);
|
||
sprintf (canonical_name, "%s:%s", filename, symname);
|
||
}
|
||
else
|
||
{
|
||
canonical_name = xmalloc (strlen (filename) + 30);
|
||
sprintf (canonical_name, "%s:%d", filename, sal->line);
|
||
}
|
||
canonical_arr[0] = canonical_name;
|
||
}
|
||
|
||
/* Parse a string that specifies a line number.
|
||
Pass the address of a char * variable; that variable will be
|
||
advanced over the characters actually parsed.
|
||
|
||
The string can be:
|
||
|
||
LINENUM -- that line number in current file. PC returned is 0.
|
||
FILE:LINENUM -- that line in that file. PC returned is 0.
|
||
FUNCTION -- line number of openbrace of that function.
|
||
PC returned is the start of the function.
|
||
VARIABLE -- line number of definition of that variable.
|
||
PC returned is 0.
|
||
FILE:FUNCTION -- likewise, but prefer functions in that file.
|
||
*EXPR -- line in which address EXPR appears.
|
||
|
||
FUNCTION may be an undebuggable function found in minimal symbol table.
|
||
|
||
If the argument FUNFIRSTLINE is nonzero, we want the first line
|
||
of real code inside a function when a function is specified, and it is
|
||
not OK to specify a variable or type to get its line number.
|
||
|
||
DEFAULT_SYMTAB specifies the file to use if none is specified.
|
||
It defaults to current_source_symtab.
|
||
DEFAULT_LINE specifies the line number to use for relative
|
||
line numbers (that start with signs). Defaults to current_source_line.
|
||
If CANONICAL is non-NULL, store an array of strings containing the canonical
|
||
line specs there if necessary. Currently overloaded member functions and
|
||
line numbers or static functions without a filename yield a canonical
|
||
line spec. The array and the line spec strings are allocated on the heap,
|
||
it is the callers responsibility to free them.
|
||
|
||
Note that it is possible to return zero for the symtab
|
||
if no file is validly specified. Callers must check that.
|
||
Also, the line number returned may be invalid. */
|
||
|
||
/* We allow single quotes in various places. This is a hideous
|
||
kludge, which exists because the completer can't yet deal with the
|
||
lack of single quotes. FIXME: write a linespec_completer which we
|
||
can use as appropriate instead of make_symbol_completion_list. */
|
||
|
||
struct symtabs_and_lines
|
||
decode_line_1 (argptr, funfirstline, default_symtab, default_line, canonical)
|
||
char **argptr;
|
||
int funfirstline;
|
||
struct symtab *default_symtab;
|
||
int default_line;
|
||
char ***canonical;
|
||
{
|
||
struct symtabs_and_lines values;
|
||
#ifdef HPPA_COMPILER_BUG
|
||
/* FIXME: The native HP 9000/700 compiler has a bug which appears
|
||
when optimizing this file with target i960-vxworks. I haven't
|
||
been able to construct a simple test case. The problem is that
|
||
in the second call to SKIP_PROLOGUE below, the compiler somehow
|
||
does not realize that the statement val = find_pc_line (...) will
|
||
change the values of the fields of val. It extracts the elements
|
||
into registers at the top of the block, and does not update the
|
||
registers after the call to find_pc_line. You can check this by
|
||
inserting a printf at the end of find_pc_line to show what values
|
||
it is returning for val.pc and val.end and another printf after
|
||
the call to see what values the function actually got (remember,
|
||
this is compiling with cc -O, with this patch removed). You can
|
||
also examine the assembly listing: search for the second call to
|
||
skip_prologue; the LDO statement before the next call to
|
||
find_pc_line loads the address of the structure which
|
||
find_pc_line will return; if there is a LDW just before the LDO,
|
||
which fetches an element of the structure, then the compiler
|
||
still has the bug.
|
||
|
||
Setting val to volatile avoids the problem. We must undef
|
||
volatile, because the HPPA native compiler does not define
|
||
__STDC__, although it does understand volatile, and so volatile
|
||
will have been defined away in defs.h. */
|
||
#undef volatile
|
||
volatile struct symtab_and_line val;
|
||
#define volatile /*nothing*/
|
||
#else
|
||
struct symtab_and_line val;
|
||
#endif
|
||
register char *p, *p1;
|
||
char *q, *pp;
|
||
#if 0
|
||
char *q1;
|
||
#endif
|
||
register struct symtab *s;
|
||
|
||
register struct symbol *sym;
|
||
/* The symtab that SYM was found in. */
|
||
struct symtab *sym_symtab;
|
||
|
||
register CORE_ADDR pc;
|
||
register struct minimal_symbol *msymbol;
|
||
char *copy;
|
||
struct symbol *sym_class;
|
||
int i1;
|
||
int is_quoted, has_parens;
|
||
struct symbol **sym_arr;
|
||
struct type *t;
|
||
char *saved_arg = *argptr;
|
||
extern char *gdb_completer_quote_characters;
|
||
|
||
/* Defaults have defaults. */
|
||
|
||
if (default_symtab == 0)
|
||
{
|
||
default_symtab = current_source_symtab;
|
||
default_line = current_source_line;
|
||
}
|
||
|
||
/* See if arg is *PC */
|
||
|
||
if (**argptr == '*')
|
||
{
|
||
(*argptr)++;
|
||
pc = parse_and_eval_address_1 (argptr);
|
||
values.sals = (struct symtab_and_line *)
|
||
xmalloc (sizeof (struct symtab_and_line));
|
||
values.nelts = 1;
|
||
values.sals[0] = find_pc_line (pc, 0);
|
||
values.sals[0].pc = pc;
|
||
return values;
|
||
}
|
||
|
||
/* Maybe arg is FILE : LINENUM or FILE : FUNCTION */
|
||
|
||
s = NULL;
|
||
is_quoted = (**argptr
|
||
&& strchr (gdb_completer_quote_characters, **argptr) != NULL);
|
||
has_parens = ((pp = strchr (*argptr, '(')) != NULL
|
||
&& (pp = strchr (pp, ')')) != NULL);
|
||
|
||
for (p = *argptr; *p; p++)
|
||
{
|
||
if (p[0] == '<')
|
||
{
|
||
while(++p && *p != '>');
|
||
if (!p)
|
||
{
|
||
error ("non-matching '<' and '>' in command");
|
||
}
|
||
}
|
||
if (p[0] == ':' || p[0] == ' ' || p[0] == '\t')
|
||
break;
|
||
}
|
||
while (p[0] == ' ' || p[0] == '\t') p++;
|
||
|
||
if ((p[0] == ':') && !has_parens)
|
||
{
|
||
|
||
/* C++ */
|
||
if (is_quoted) *argptr = *argptr+1;
|
||
if (p[1] ==':')
|
||
{
|
||
/* Extract the class name. */
|
||
p1 = p;
|
||
while (p != *argptr && p[-1] == ' ') --p;
|
||
copy = (char *) alloca (p - *argptr + 1);
|
||
memcpy (copy, *argptr, p - *argptr);
|
||
copy[p - *argptr] = 0;
|
||
|
||
/* Discard the class name from the arg. */
|
||
p = p1 + 2;
|
||
while (*p == ' ' || *p == '\t') p++;
|
||
*argptr = p;
|
||
|
||
sym_class = lookup_symbol (copy, 0, STRUCT_NAMESPACE, 0,
|
||
(struct symtab **)NULL);
|
||
|
||
if (sym_class &&
|
||
(t = check_typedef (SYMBOL_TYPE (sym_class)),
|
||
(TYPE_CODE (t) == TYPE_CODE_STRUCT
|
||
|| TYPE_CODE (t) == TYPE_CODE_UNION)))
|
||
{
|
||
/* Arg token is not digits => try it as a function name
|
||
Find the next token(everything up to end or next blank). */
|
||
if (**argptr
|
||
&& strchr (gdb_completer_quote_characters, **argptr) != NULL)
|
||
{
|
||
p = skip_quoted(*argptr);
|
||
*argptr = *argptr + 1;
|
||
}
|
||
else
|
||
{
|
||
p = *argptr;
|
||
while (*p && *p!=' ' && *p!='\t' && *p!=',' && *p!=':') p++;
|
||
}
|
||
/*
|
||
q = operator_chars (*argptr, &q1);
|
||
if (q1 - q)
|
||
{
|
||
char *opname;
|
||
char *tmp = alloca (q1 - q + 1);
|
||
memcpy (tmp, q, q1 - q);
|
||
tmp[q1 - q] = '\0';
|
||
opname = cplus_mangle_opname (tmp, DMGL_ANSI);
|
||
if (opname == NULL)
|
||
{
|
||
error_begin ();
|
||
printf_filtered ("no mangling for \"%s\"\n", tmp);
|
||
cplusplus_hint (saved_arg);
|
||
return_to_top_level (RETURN_ERROR);
|
||
}
|
||
copy = (char*) alloca (3 + strlen(opname));
|
||
sprintf (copy, "__%s", opname);
|
||
p = q1;
|
||
}
|
||
else
|
||
*/
|
||
{
|
||
copy = (char *) alloca (p - *argptr + 1 );
|
||
memcpy (copy, *argptr, p - *argptr);
|
||
copy[p - *argptr] = '\0';
|
||
if (p != *argptr
|
||
&& copy[p - *argptr - 1]
|
||
&& strchr (gdb_completer_quote_characters,
|
||
copy[p - *argptr - 1]) != NULL)
|
||
copy[p - *argptr - 1] = '\0';
|
||
}
|
||
|
||
/* no line number may be specified */
|
||
while (*p == ' ' || *p == '\t') p++;
|
||
*argptr = p;
|
||
|
||
sym = 0;
|
||
i1 = 0; /* counter for the symbol array */
|
||
sym_arr = (struct symbol **) alloca(total_number_of_methods (t)
|
||
* sizeof(struct symbol *));
|
||
|
||
/* Cfront objects don't have fieldlists. */
|
||
if (destructor_name_p (copy, t) && TYPE_FN_FIELDLISTS (t) != NULL)
|
||
{
|
||
/* destructors are a special case. */
|
||
struct fn_field *f = TYPE_FN_FIELDLIST1 (t, 0);
|
||
int len = TYPE_FN_FIELDLIST_LENGTH (t, 0) - 1;
|
||
/* gcc 1.x puts destructor in last field,
|
||
gcc 2.x puts destructor in first field. */
|
||
char *phys_name = TYPE_FN_FIELD_PHYSNAME (f, len);
|
||
if (!DESTRUCTOR_PREFIX_P (phys_name))
|
||
{
|
||
phys_name = TYPE_FN_FIELD_PHYSNAME (f, 0);
|
||
if (!DESTRUCTOR_PREFIX_P (phys_name))
|
||
phys_name = "";
|
||
}
|
||
sym_arr[i1] =
|
||
lookup_symbol (phys_name, SYMBOL_BLOCK_VALUE (sym_class),
|
||
VAR_NAMESPACE, 0, (struct symtab **)NULL);
|
||
if (sym_arr[i1]) i1++;
|
||
}
|
||
else
|
||
i1 = find_methods (t, copy, sym_arr);
|
||
if (i1 == 1)
|
||
{
|
||
/* There is exactly one field with that name. */
|
||
sym = sym_arr[0];
|
||
|
||
if (sym && SYMBOL_CLASS (sym) == LOC_BLOCK)
|
||
{
|
||
values.sals = (struct symtab_and_line *)xmalloc (sizeof (struct symtab_and_line));
|
||
values.nelts = 1;
|
||
values.sals[0] = find_function_start_sal (sym,
|
||
funfirstline);
|
||
}
|
||
else
|
||
{
|
||
values.nelts = 0;
|
||
}
|
||
return values;
|
||
}
|
||
if (i1 > 0)
|
||
{
|
||
/* There is more than one field with that name
|
||
(overloaded). Ask the user which one to use. */
|
||
return decode_line_2 (sym_arr, i1, funfirstline, canonical);
|
||
}
|
||
else
|
||
{
|
||
char *tmp;
|
||
|
||
if (OPNAME_PREFIX_P (copy))
|
||
{
|
||
tmp = (char *)alloca (strlen (copy+3) + 9);
|
||
strcpy (tmp, "operator ");
|
||
strcat (tmp, copy+3);
|
||
}
|
||
else
|
||
tmp = copy;
|
||
error_begin ();
|
||
if (tmp[0] == '~')
|
||
printf_filtered
|
||
("the class `%s' does not have destructor defined\n",
|
||
SYMBOL_SOURCE_NAME(sym_class));
|
||
else
|
||
printf_filtered
|
||
("the class %s does not have any method named %s\n",
|
||
SYMBOL_SOURCE_NAME(sym_class), tmp);
|
||
cplusplus_hint (saved_arg);
|
||
return_to_top_level (RETURN_ERROR);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
error_begin ();
|
||
/* The quotes are important if copy is empty. */
|
||
printf_filtered
|
||
("can't find class, struct, or union named \"%s\"\n", copy);
|
||
cplusplus_hint (saved_arg);
|
||
return_to_top_level (RETURN_ERROR);
|
||
}
|
||
}
|
||
/* end of C++ */
|
||
|
||
|
||
/* Extract the file name. */
|
||
p1 = p;
|
||
while (p != *argptr && p[-1] == ' ') --p;
|
||
copy = (char *) alloca (p - *argptr + 1);
|
||
memcpy (copy, *argptr, p - *argptr);
|
||
copy[p - *argptr] = 0;
|
||
|
||
/* Find that file's data. */
|
||
s = lookup_symtab (copy);
|
||
if (s == 0)
|
||
{
|
||
if (!have_full_symbols () && !have_partial_symbols ())
|
||
error (no_symtab_msg);
|
||
error ("No source file named %s.", copy);
|
||
}
|
||
|
||
/* Discard the file name from the arg. */
|
||
p = p1 + 1;
|
||
while (*p == ' ' || *p == '\t') p++;
|
||
*argptr = p;
|
||
}
|
||
|
||
/* S is specified file's symtab, or 0 if no file specified.
|
||
arg no longer contains the file name. */
|
||
|
||
/* Check whether arg is all digits (and sign) */
|
||
|
||
q = *argptr;
|
||
if (*q == '-' || *q == '+') q++;
|
||
while (*q >= '0' && *q <= '9')
|
||
q++;
|
||
|
||
if (q != *argptr && (*q == 0 || *q == ' ' || *q == '\t' || *q == ','))
|
||
{
|
||
/* We found a token consisting of all digits -- at least one digit. */
|
||
enum sign {none, plus, minus} sign = none;
|
||
|
||
/* We might need a canonical line spec if no file was specified. */
|
||
int need_canonical = (s == 0) ? 1 : 0;
|
||
|
||
/* This is where we need to make sure that we have good defaults.
|
||
We must guarantee that this section of code is never executed
|
||
when we are called with just a function name, since
|
||
select_source_symtab calls us with such an argument */
|
||
|
||
if (s == 0 && default_symtab == 0)
|
||
{
|
||
select_source_symtab (0);
|
||
default_symtab = current_source_symtab;
|
||
default_line = current_source_line;
|
||
}
|
||
|
||
if (**argptr == '+')
|
||
sign = plus, (*argptr)++;
|
||
else if (**argptr == '-')
|
||
sign = minus, (*argptr)++;
|
||
val.line = atoi (*argptr);
|
||
switch (sign)
|
||
{
|
||
case plus:
|
||
if (q == *argptr)
|
||
val.line = 5;
|
||
if (s == 0)
|
||
val.line = default_line + val.line;
|
||
break;
|
||
case minus:
|
||
if (q == *argptr)
|
||
val.line = 15;
|
||
if (s == 0)
|
||
val.line = default_line - val.line;
|
||
else
|
||
val.line = 1;
|
||
break;
|
||
case none:
|
||
break; /* No need to adjust val.line. */
|
||
}
|
||
|
||
while (*q == ' ' || *q == '\t') q++;
|
||
*argptr = q;
|
||
if (s == 0)
|
||
s = default_symtab;
|
||
val.symtab = s;
|
||
val.pc = 0;
|
||
values.sals = (struct symtab_and_line *)xmalloc (sizeof (struct symtab_and_line));
|
||
values.sals[0] = val;
|
||
values.nelts = 1;
|
||
if (need_canonical)
|
||
build_canonical_line_spec (values.sals, NULL, canonical);
|
||
return values;
|
||
}
|
||
|
||
/* Arg token is not digits => try it as a variable name
|
||
Find the next token (everything up to end or next whitespace). */
|
||
|
||
if (**argptr == '$') /* Convenience variable */
|
||
p = skip_quoted (*argptr + 1);
|
||
else if (is_quoted)
|
||
{
|
||
p = skip_quoted (*argptr);
|
||
if (p[-1] != '\'')
|
||
error ("Unmatched single quote.");
|
||
}
|
||
else if (has_parens)
|
||
{
|
||
p = pp+1;
|
||
}
|
||
else
|
||
{
|
||
p = skip_quoted(*argptr);
|
||
}
|
||
|
||
copy = (char *) alloca (p - *argptr + 1);
|
||
memcpy (copy, *argptr, p - *argptr);
|
||
copy[p - *argptr] = '\0';
|
||
if (p != *argptr
|
||
&& copy[0]
|
||
&& copy[0] == copy [p - *argptr - 1]
|
||
&& strchr (gdb_completer_quote_characters, copy[0]) != NULL)
|
||
{
|
||
copy [p - *argptr - 1] = '\0';
|
||
copy++;
|
||
}
|
||
while (*p == ' ' || *p == '\t') p++;
|
||
*argptr = p;
|
||
|
||
/* See if it's a convenience variable */
|
||
|
||
if (*copy == '$')
|
||
{
|
||
value_ptr valx;
|
||
int need_canonical = (s == 0) ? 1 : 0;
|
||
|
||
valx = value_of_internalvar (lookup_internalvar (copy + 1));
|
||
if (TYPE_CODE (VALUE_TYPE (valx)) != TYPE_CODE_INT)
|
||
error ("Convenience variables used in line specs must have integer values.");
|
||
|
||
val.symtab = s ? s : default_symtab;
|
||
val.line = value_as_long (valx);
|
||
val.pc = 0;
|
||
|
||
values.sals = (struct symtab_and_line *)xmalloc (sizeof val);
|
||
values.sals[0] = val;
|
||
values.nelts = 1;
|
||
|
||
if (need_canonical)
|
||
build_canonical_line_spec (values.sals, NULL, canonical);
|
||
|
||
return values;
|
||
}
|
||
|
||
|
||
/* Look up that token as a variable.
|
||
If file specified, use that file's per-file block to start with. */
|
||
|
||
sym = lookup_symbol (copy,
|
||
(s ? BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK)
|
||
: get_selected_block ()),
|
||
VAR_NAMESPACE, 0, &sym_symtab);
|
||
|
||
if (sym != NULL)
|
||
{
|
||
if (SYMBOL_CLASS (sym) == LOC_BLOCK)
|
||
{
|
||
/* Arg is the name of a function */
|
||
values.sals = (struct symtab_and_line *)xmalloc (sizeof (struct symtab_and_line));
|
||
values.sals[0] = find_function_start_sal (sym, funfirstline);
|
||
values.nelts = 1;
|
||
|
||
/* Don't use the SYMBOL_LINE; if used at all it points to
|
||
the line containing the parameters or thereabouts, not
|
||
the first line of code. */
|
||
|
||
/* We might need a canonical line spec if it is a static
|
||
function. */
|
||
if (s == 0)
|
||
{
|
||
struct blockvector *bv = BLOCKVECTOR (sym_symtab);
|
||
struct block *b = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
|
||
if (lookup_block_symbol (b, copy, VAR_NAMESPACE) != NULL)
|
||
build_canonical_line_spec (values.sals, copy, canonical);
|
||
}
|
||
return values;
|
||
}
|
||
else
|
||
{
|
||
if (funfirstline)
|
||
error ("\"%s\" is not a function", copy);
|
||
else if (SYMBOL_LINE (sym) != 0)
|
||
{
|
||
/* We know its line number. */
|
||
values.sals = (struct symtab_and_line *)
|
||
xmalloc (sizeof (struct symtab_and_line));
|
||
values.nelts = 1;
|
||
memset (&values.sals[0], 0, sizeof (values.sals[0]));
|
||
values.sals[0].symtab = sym_symtab;
|
||
values.sals[0].line = SYMBOL_LINE (sym);
|
||
return values;
|
||
}
|
||
else
|
||
/* This can happen if it is compiled with a compiler which doesn't
|
||
put out line numbers for variables. */
|
||
/* FIXME: Shouldn't we just set .line and .symtab to zero
|
||
and return? For example, "info line foo" could print
|
||
the address. */
|
||
error ("Line number not known for symbol \"%s\"", copy);
|
||
}
|
||
}
|
||
|
||
msymbol = lookup_minimal_symbol (copy, NULL, NULL);
|
||
if (msymbol != NULL)
|
||
{
|
||
val.symtab = 0;
|
||
val.line = 0;
|
||
val.pc = SYMBOL_VALUE_ADDRESS (msymbol);
|
||
if (funfirstline)
|
||
{
|
||
val.pc += FUNCTION_START_OFFSET;
|
||
SKIP_PROLOGUE (val.pc);
|
||
}
|
||
values.sals = (struct symtab_and_line *)xmalloc (sizeof (struct symtab_and_line));
|
||
values.sals[0] = val;
|
||
values.nelts = 1;
|
||
return values;
|
||
}
|
||
|
||
if (!have_full_symbols () &&
|
||
!have_partial_symbols () && !have_minimal_symbols ())
|
||
error (no_symtab_msg);
|
||
|
||
error ("Function \"%s\" not defined.", copy);
|
||
return values; /* for lint */
|
||
}
|
||
|
||
struct symtabs_and_lines
|
||
decode_line_spec (string, funfirstline)
|
||
char *string;
|
||
int funfirstline;
|
||
{
|
||
struct symtabs_and_lines sals;
|
||
if (string == 0)
|
||
error ("Empty line specification.");
|
||
sals = decode_line_1 (&string, funfirstline,
|
||
current_source_symtab, current_source_line,
|
||
(char ***)NULL);
|
||
if (*string)
|
||
error ("Junk at end of line specification: %s", string);
|
||
return sals;
|
||
}
|
||
|
||
/* Given a list of NELTS symbols in SYM_ARR, return a list of lines to
|
||
operate on (ask user if necessary).
|
||
If CANONICAL is non-NULL return a corresponding array of mangled names
|
||
as canonical line specs there. */
|
||
|
||
static struct symtabs_and_lines
|
||
decode_line_2 (sym_arr, nelts, funfirstline, canonical)
|
||
struct symbol *sym_arr[];
|
||
int nelts;
|
||
int funfirstline;
|
||
char ***canonical;
|
||
{
|
||
struct symtabs_and_lines values, return_values;
|
||
char *args, *arg1;
|
||
int i;
|
||
char *prompt;
|
||
char *symname;
|
||
struct cleanup *old_chain;
|
||
char **canonical_arr = (char **)NULL;
|
||
|
||
values.sals = (struct symtab_and_line *) alloca (nelts * sizeof(struct symtab_and_line));
|
||
return_values.sals = (struct symtab_and_line *) xmalloc (nelts * sizeof(struct symtab_and_line));
|
||
old_chain = make_cleanup (free, return_values.sals);
|
||
|
||
if (canonical)
|
||
{
|
||
canonical_arr = (char **) xmalloc (nelts * sizeof (char *));
|
||
make_cleanup (free, canonical_arr);
|
||
memset (canonical_arr, 0, nelts * sizeof (char *));
|
||
*canonical = canonical_arr;
|
||
}
|
||
|
||
i = 0;
|
||
printf_unfiltered("[0] cancel\n[1] all\n");
|
||
while (i < nelts)
|
||
{
|
||
if (sym_arr[i] && SYMBOL_CLASS (sym_arr[i]) == LOC_BLOCK)
|
||
{
|
||
values.sals[i] = find_function_start_sal (sym_arr[i], funfirstline);
|
||
printf_unfiltered ("[%d] %s at %s:%d\n",
|
||
(i+2),
|
||
SYMBOL_SOURCE_NAME (sym_arr[i]),
|
||
values.sals[i].symtab->filename,
|
||
values.sals[i].line);
|
||
}
|
||
else
|
||
printf_unfiltered ("?HERE\n");
|
||
i++;
|
||
}
|
||
|
||
if ((prompt = getenv ("PS2")) == NULL)
|
||
{
|
||
prompt = ">";
|
||
}
|
||
printf_unfiltered("%s ",prompt);
|
||
gdb_flush(gdb_stdout);
|
||
|
||
args = command_line_input ((char *) NULL, 0, "overload-choice");
|
||
|
||
if (args == 0 || *args == 0)
|
||
error_no_arg ("one or more choice numbers");
|
||
|
||
i = 0;
|
||
while (*args)
|
||
{
|
||
int num;
|
||
|
||
arg1 = args;
|
||
while (*arg1 >= '0' && *arg1 <= '9') arg1++;
|
||
if (*arg1 && *arg1 != ' ' && *arg1 != '\t')
|
||
error ("Arguments must be choice numbers.");
|
||
|
||
num = atoi (args);
|
||
|
||
if (num == 0)
|
||
error ("cancelled");
|
||
else if (num == 1)
|
||
{
|
||
if (canonical_arr)
|
||
{
|
||
for (i = 0; i < nelts; i++)
|
||
{
|
||
if (canonical_arr[i] == NULL)
|
||
{
|
||
symname = SYMBOL_NAME (sym_arr[i]);
|
||
canonical_arr[i] = savestring (symname, strlen (symname));
|
||
}
|
||
}
|
||
}
|
||
memcpy (return_values.sals, values.sals,
|
||
(nelts * sizeof(struct symtab_and_line)));
|
||
return_values.nelts = nelts;
|
||
discard_cleanups (old_chain);
|
||
return return_values;
|
||
}
|
||
|
||
if (num > nelts + 2)
|
||
{
|
||
printf_unfiltered ("No choice number %d.\n", num);
|
||
}
|
||
else
|
||
{
|
||
num -= 2;
|
||
if (values.sals[num].pc)
|
||
{
|
||
if (canonical_arr)
|
||
{
|
||
symname = SYMBOL_NAME (sym_arr[num]);
|
||
make_cleanup (free, symname);
|
||
canonical_arr[i] = savestring (symname, strlen (symname));
|
||
}
|
||
return_values.sals[i++] = values.sals[num];
|
||
values.sals[num].pc = 0;
|
||
}
|
||
else
|
||
{
|
||
printf_unfiltered ("duplicate request for %d ignored.\n", num);
|
||
}
|
||
}
|
||
|
||
args = arg1;
|
||
while (*args == ' ' || *args == '\t') args++;
|
||
}
|
||
return_values.nelts = i;
|
||
discard_cleanups (old_chain);
|
||
return return_values;
|
||
}
|
||
|
||
|
||
/* Slave routine for sources_info. Force line breaks at ,'s.
|
||
NAME is the name to print and *FIRST is nonzero if this is the first
|
||
name printed. Set *FIRST to zero. */
|
||
static void
|
||
output_source_filename (name, first)
|
||
char *name;
|
||
int *first;
|
||
{
|
||
/* Table of files printed so far. Since a single source file can
|
||
result in several partial symbol tables, we need to avoid printing
|
||
it more than once. Note: if some of the psymtabs are read in and
|
||
some are not, it gets printed both under "Source files for which
|
||
symbols have been read" and "Source files for which symbols will
|
||
be read in on demand". I consider this a reasonable way to deal
|
||
with the situation. I'm not sure whether this can also happen for
|
||
symtabs; it doesn't hurt to check. */
|
||
static char **tab = NULL;
|
||
/* Allocated size of tab in elements.
|
||
Start with one 256-byte block (when using GNU malloc.c).
|
||
24 is the malloc overhead when range checking is in effect. */
|
||
static int tab_alloc_size = (256 - 24) / sizeof (char *);
|
||
/* Current size of tab in elements. */
|
||
static int tab_cur_size;
|
||
|
||
char **p;
|
||
|
||
if (*first)
|
||
{
|
||
if (tab == NULL)
|
||
tab = (char **) xmalloc (tab_alloc_size * sizeof (*tab));
|
||
tab_cur_size = 0;
|
||
}
|
||
|
||
/* Is NAME in tab? */
|
||
for (p = tab; p < tab + tab_cur_size; p++)
|
||
if (STREQ (*p, name))
|
||
/* Yes; don't print it again. */
|
||
return;
|
||
/* No; add it to tab. */
|
||
if (tab_cur_size == tab_alloc_size)
|
||
{
|
||
tab_alloc_size *= 2;
|
||
tab = (char **) xrealloc ((char *) tab, tab_alloc_size * sizeof (*tab));
|
||
}
|
||
tab[tab_cur_size++] = name;
|
||
|
||
if (*first)
|
||
{
|
||
*first = 0;
|
||
}
|
||
else
|
||
{
|
||
printf_filtered (", ");
|
||
}
|
||
|
||
wrap_here ("");
|
||
fputs_filtered (name, gdb_stdout);
|
||
}
|
||
|
||
static void
|
||
sources_info (ignore, from_tty)
|
||
char *ignore;
|
||
int from_tty;
|
||
{
|
||
register struct symtab *s;
|
||
register struct partial_symtab *ps;
|
||
register struct objfile *objfile;
|
||
int first;
|
||
|
||
if (!have_full_symbols () && !have_partial_symbols ())
|
||
{
|
||
error (no_symtab_msg);
|
||
}
|
||
|
||
printf_filtered ("Source files for which symbols have been read in:\n\n");
|
||
|
||
first = 1;
|
||
ALL_SYMTABS (objfile, s)
|
||
{
|
||
output_source_filename (s -> filename, &first);
|
||
}
|
||
printf_filtered ("\n\n");
|
||
|
||
printf_filtered ("Source files for which symbols will be read in on demand:\n\n");
|
||
|
||
first = 1;
|
||
ALL_PSYMTABS (objfile, ps)
|
||
{
|
||
if (!ps->readin)
|
||
{
|
||
output_source_filename (ps -> filename, &first);
|
||
}
|
||
}
|
||
printf_filtered ("\n");
|
||
}
|
||
|
||
/* List all symbols (if REGEXP is NULL) or all symbols matching REGEXP.
|
||
If CLASS is zero, list all symbols except functions, type names, and
|
||
constants (enums).
|
||
If CLASS is 1, list only functions.
|
||
If CLASS is 2, list only type names.
|
||
If CLASS is 3, list only method names.
|
||
|
||
BPT is non-zero if we should set a breakpoint at the functions
|
||
we find. */
|
||
|
||
static void
|
||
list_symbols (regexp, class, bpt, from_tty)
|
||
char *regexp;
|
||
int class;
|
||
int bpt;
|
||
int from_tty;
|
||
{
|
||
register struct symtab *s;
|
||
register struct partial_symtab *ps;
|
||
register struct blockvector *bv;
|
||
struct blockvector *prev_bv = 0;
|
||
register struct block *b;
|
||
register int i, j;
|
||
register struct symbol *sym;
|
||
struct partial_symbol **psym;
|
||
struct objfile *objfile;
|
||
struct minimal_symbol *msymbol;
|
||
char *val;
|
||
static char *classnames[]
|
||
= {"variable", "function", "type", "method"};
|
||
int found_in_file = 0;
|
||
int found_misc = 0;
|
||
static enum minimal_symbol_type types[]
|
||
= {mst_data, mst_text, mst_abs, mst_unknown};
|
||
static enum minimal_symbol_type types2[]
|
||
= {mst_bss, mst_file_text, mst_abs, mst_unknown};
|
||
static enum minimal_symbol_type types3[]
|
||
= {mst_file_data, mst_solib_trampoline, mst_abs, mst_unknown};
|
||
static enum minimal_symbol_type types4[]
|
||
= {mst_file_bss, mst_text, mst_abs, mst_unknown};
|
||
enum minimal_symbol_type ourtype = types[class];
|
||
enum minimal_symbol_type ourtype2 = types2[class];
|
||
enum minimal_symbol_type ourtype3 = types3[class];
|
||
enum minimal_symbol_type ourtype4 = types4[class];
|
||
|
||
if (regexp != NULL)
|
||
{
|
||
/* Make sure spacing is right for C++ operators.
|
||
This is just a courtesy to make the matching less sensitive
|
||
to how many spaces the user leaves between 'operator'
|
||
and <TYPENAME> or <OPERATOR>. */
|
||
char *opend;
|
||
char *opname = operator_chars (regexp, &opend);
|
||
if (*opname)
|
||
{
|
||
int fix = -1; /* -1 means ok; otherwise number of spaces needed. */
|
||
if (isalpha(*opname) || *opname == '_' || *opname == '$')
|
||
{
|
||
/* There should 1 space between 'operator' and 'TYPENAME'. */
|
||
if (opname[-1] != ' ' || opname[-2] == ' ')
|
||
fix = 1;
|
||
}
|
||
else
|
||
{
|
||
/* There should 0 spaces between 'operator' and 'OPERATOR'. */
|
||
if (opname[-1] == ' ')
|
||
fix = 0;
|
||
}
|
||
/* If wrong number of spaces, fix it. */
|
||
if (fix >= 0)
|
||
{
|
||
char *tmp = (char*) alloca(opend-opname+10);
|
||
sprintf(tmp, "operator%.*s%s", fix, " ", opname);
|
||
regexp = tmp;
|
||
}
|
||
}
|
||
|
||
if (0 != (val = re_comp (regexp)))
|
||
error ("Invalid regexp (%s): %s", val, regexp);
|
||
}
|
||
|
||
/* Search through the partial symtabs *first* for all symbols
|
||
matching the regexp. That way we don't have to reproduce all of
|
||
the machinery below. */
|
||
|
||
ALL_PSYMTABS (objfile, ps)
|
||
{
|
||
struct partial_symbol **bound, **gbound, **sbound;
|
||
int keep_going = 1;
|
||
|
||
if (ps->readin) continue;
|
||
|
||
gbound = objfile->global_psymbols.list + ps->globals_offset + ps->n_global_syms;
|
||
sbound = objfile->static_psymbols.list + ps->statics_offset + ps->n_static_syms;
|
||
bound = gbound;
|
||
|
||
/* Go through all of the symbols stored in a partial
|
||
symtab in one loop. */
|
||
psym = objfile->global_psymbols.list + ps->globals_offset;
|
||
while (keep_going)
|
||
{
|
||
if (psym >= bound)
|
||
{
|
||
if (bound == gbound && ps->n_static_syms != 0)
|
||
{
|
||
psym = objfile->static_psymbols.list + ps->statics_offset;
|
||
bound = sbound;
|
||
}
|
||
else
|
||
keep_going = 0;
|
||
continue;
|
||
}
|
||
else
|
||
{
|
||
QUIT;
|
||
|
||
/* If it would match (logic taken from loop below)
|
||
load the file and go on to the next one */
|
||
if ((regexp == NULL || SYMBOL_MATCHES_REGEXP (*psym))
|
||
&& ((class == 0 && SYMBOL_CLASS (*psym) != LOC_TYPEDEF
|
||
&& SYMBOL_CLASS (*psym) != LOC_BLOCK)
|
||
|| (class == 1 && SYMBOL_CLASS (*psym) == LOC_BLOCK)
|
||
|| (class == 2 && SYMBOL_CLASS (*psym) == LOC_TYPEDEF)
|
||
|| (class == 3 && SYMBOL_CLASS (*psym) == LOC_BLOCK)))
|
||
{
|
||
PSYMTAB_TO_SYMTAB(ps);
|
||
keep_going = 0;
|
||
}
|
||
}
|
||
psym++;
|
||
}
|
||
}
|
||
|
||
/* Here, we search through the minimal symbol tables for functions
|
||
and variables that match, and force their symbols to be read.
|
||
This is in particular necessary for demangled variable names,
|
||
which are no longer put into the partial symbol tables.
|
||
The symbol will then be found during the scan of symtabs below.
|
||
|
||
For functions, find_pc_symtab should succeed if we have debug info
|
||
for the function, for variables we have to call lookup_symbol
|
||
to determine if the variable has debug info.
|
||
If the lookup fails, set found_misc so that we will rescan to print
|
||
any matching symbols without debug info.
|
||
*/
|
||
|
||
if (class == 0 || class == 1)
|
||
{
|
||
ALL_MSYMBOLS (objfile, msymbol)
|
||
{
|
||
if (MSYMBOL_TYPE (msymbol) == ourtype ||
|
||
MSYMBOL_TYPE (msymbol) == ourtype2 ||
|
||
MSYMBOL_TYPE (msymbol) == ourtype3 ||
|
||
MSYMBOL_TYPE (msymbol) == ourtype4)
|
||
{
|
||
if (regexp == NULL || SYMBOL_MATCHES_REGEXP (msymbol))
|
||
{
|
||
if (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol)))
|
||
{
|
||
if (class == 1
|
||
|| lookup_symbol (SYMBOL_NAME (msymbol),
|
||
(struct block *) NULL,
|
||
VAR_NAMESPACE,
|
||
0, (struct symtab **) NULL) == NULL)
|
||
found_misc = 1;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Printout here so as to get after the "Reading in symbols"
|
||
messages which will be generated above. */
|
||
if (!bpt)
|
||
printf_filtered (regexp
|
||
? "All %ss matching regular expression \"%s\":\n"
|
||
: "All defined %ss:\n",
|
||
classnames[class],
|
||
regexp);
|
||
|
||
ALL_SYMTABS (objfile, s)
|
||
{
|
||
found_in_file = 0;
|
||
bv = BLOCKVECTOR (s);
|
||
/* Often many files share a blockvector.
|
||
Scan each blockvector only once so that
|
||
we don't get every symbol many times.
|
||
It happens that the first symtab in the list
|
||
for any given blockvector is the main file. */
|
||
if (bv != prev_bv)
|
||
for (i = GLOBAL_BLOCK; i <= STATIC_BLOCK; i++)
|
||
{
|
||
b = BLOCKVECTOR_BLOCK (bv, i);
|
||
/* Skip the sort if this block is always sorted. */
|
||
if (!BLOCK_SHOULD_SORT (b))
|
||
sort_block_syms (b);
|
||
for (j = 0; j < BLOCK_NSYMS (b); j++)
|
||
{
|
||
QUIT;
|
||
sym = BLOCK_SYM (b, j);
|
||
if ((regexp == NULL || SYMBOL_MATCHES_REGEXP (sym))
|
||
&& ((class == 0 && SYMBOL_CLASS (sym) != LOC_TYPEDEF
|
||
&& SYMBOL_CLASS (sym) != LOC_BLOCK
|
||
&& SYMBOL_CLASS (sym) != LOC_CONST)
|
||
|| (class == 1 && SYMBOL_CLASS (sym) == LOC_BLOCK)
|
||
|| (class == 2 && SYMBOL_CLASS (sym) == LOC_TYPEDEF)
|
||
|| (class == 3 && SYMBOL_CLASS (sym) == LOC_BLOCK)))
|
||
{
|
||
if (bpt)
|
||
{
|
||
/* Set a breakpoint here, if it's a function */
|
||
if (class == 1)
|
||
{
|
||
/* There may be more than one function with the
|
||
same name but in different files. In order to
|
||
set breakpoints on all of them, we must give
|
||
both the file name and the function name to
|
||
break_command.
|
||
Quoting the symbol name gets rid of problems
|
||
with mangled symbol names that contain
|
||
CPLUS_MARKER characters. */
|
||
char *string =
|
||
(char *) alloca (strlen (s->filename)
|
||
+ strlen (SYMBOL_NAME(sym))
|
||
+ 4);
|
||
strcpy (string, s->filename);
|
||
strcat (string, ":'");
|
||
strcat (string, SYMBOL_NAME(sym));
|
||
strcat (string, "'");
|
||
break_command (string, from_tty);
|
||
}
|
||
}
|
||
else if (!found_in_file)
|
||
{
|
||
fputs_filtered ("\nFile ", gdb_stdout);
|
||
fputs_filtered (s->filename, gdb_stdout);
|
||
fputs_filtered (":\n", gdb_stdout);
|
||
}
|
||
found_in_file = 1;
|
||
|
||
if (class != 2 && i == STATIC_BLOCK)
|
||
printf_filtered ("static ");
|
||
|
||
/* Typedef that is not a C++ class */
|
||
if (class == 2
|
||
&& SYMBOL_NAMESPACE (sym) != STRUCT_NAMESPACE)
|
||
c_typedef_print (SYMBOL_TYPE(sym), sym, gdb_stdout);
|
||
/* variable, func, or typedef-that-is-c++-class */
|
||
else if (class < 2 ||
|
||
(class == 2 &&
|
||
SYMBOL_NAMESPACE(sym) == STRUCT_NAMESPACE))
|
||
{
|
||
type_print (SYMBOL_TYPE (sym),
|
||
(SYMBOL_CLASS (sym) == LOC_TYPEDEF
|
||
? "" : SYMBOL_SOURCE_NAME (sym)),
|
||
gdb_stdout, 0);
|
||
|
||
printf_filtered (";\n");
|
||
}
|
||
else
|
||
{
|
||
# if 0 /* FIXME, why is this zapped out? */
|
||
char buf[1024];
|
||
c_type_print_base (TYPE_FN_FIELD_TYPE(t, i),
|
||
gdb_stdout, 0, 0);
|
||
c_type_print_varspec_prefix (TYPE_FN_FIELD_TYPE(t, i),
|
||
gdb_stdout, 0);
|
||
sprintf (buf, " %s::", type_name_no_tag (t));
|
||
cp_type_print_method_args (TYPE_FN_FIELD_ARGS (t, i),
|
||
buf, name, gdb_stdout);
|
||
# endif
|
||
}
|
||
}
|
||
}
|
||
}
|
||
prev_bv = bv;
|
||
}
|
||
|
||
/* If there are no eyes, avoid all contact. I mean, if there are
|
||
no debug symbols, then print directly from the msymbol_vector. */
|
||
|
||
if (found_misc || class != 1)
|
||
{
|
||
found_in_file = 0;
|
||
ALL_MSYMBOLS (objfile, msymbol)
|
||
{
|
||
if (MSYMBOL_TYPE (msymbol) == ourtype ||
|
||
MSYMBOL_TYPE (msymbol) == ourtype2 ||
|
||
MSYMBOL_TYPE (msymbol) == ourtype3 ||
|
||
MSYMBOL_TYPE (msymbol) == ourtype4)
|
||
{
|
||
if (regexp == NULL || SYMBOL_MATCHES_REGEXP (msymbol))
|
||
{
|
||
/* Functions: Look up by address. */
|
||
if (class != 1 ||
|
||
(0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol))))
|
||
{
|
||
/* Variables/Absolutes: Look up by name */
|
||
if (lookup_symbol (SYMBOL_NAME (msymbol),
|
||
(struct block *) NULL, VAR_NAMESPACE,
|
||
0, (struct symtab **) NULL) == NULL)
|
||
{
|
||
if (bpt)
|
||
{
|
||
break_command (SYMBOL_NAME (msymbol), from_tty);
|
||
printf_filtered ("<function, no debug info> %s;\n",
|
||
SYMBOL_SOURCE_NAME (msymbol));
|
||
continue;
|
||
}
|
||
if (!found_in_file)
|
||
{
|
||
printf_filtered ("\nNon-debugging symbols:\n");
|
||
found_in_file = 1;
|
||
}
|
||
printf_filtered (" %08lx %s\n",
|
||
(unsigned long) SYMBOL_VALUE_ADDRESS (msymbol),
|
||
SYMBOL_SOURCE_NAME (msymbol));
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
static void
|
||
variables_info (regexp, from_tty)
|
||
char *regexp;
|
||
int from_tty;
|
||
{
|
||
list_symbols (regexp, 0, 0, from_tty);
|
||
}
|
||
|
||
static void
|
||
functions_info (regexp, from_tty)
|
||
char *regexp;
|
||
int from_tty;
|
||
{
|
||
list_symbols (regexp, 1, 0, from_tty);
|
||
}
|
||
|
||
static void
|
||
types_info (regexp, from_tty)
|
||
char *regexp;
|
||
int from_tty;
|
||
{
|
||
list_symbols (regexp, 2, 0, from_tty);
|
||
}
|
||
|
||
#if 0
|
||
/* Tiemann says: "info methods was never implemented." */
|
||
static void
|
||
methods_info (regexp)
|
||
char *regexp;
|
||
{
|
||
list_symbols (regexp, 3, 0, from_tty);
|
||
}
|
||
#endif /* 0 */
|
||
|
||
/* Breakpoint all functions matching regular expression. */
|
||
static void
|
||
rbreak_command (regexp, from_tty)
|
||
char *regexp;
|
||
int from_tty;
|
||
{
|
||
list_symbols (regexp, 1, 1, from_tty);
|
||
}
|
||
|
||
|
||
/* Return Nonzero if block a is lexically nested within block b,
|
||
or if a and b have the same pc range.
|
||
Return zero otherwise. */
|
||
int
|
||
contained_in (a, b)
|
||
struct block *a, *b;
|
||
{
|
||
if (!a || !b)
|
||
return 0;
|
||
return BLOCK_START (a) >= BLOCK_START (b)
|
||
&& BLOCK_END (a) <= BLOCK_END (b);
|
||
}
|
||
|
||
|
||
/* Helper routine for make_symbol_completion_list. */
|
||
|
||
static int return_val_size;
|
||
static int return_val_index;
|
||
static char **return_val;
|
||
|
||
#define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \
|
||
do { \
|
||
if (SYMBOL_DEMANGLED_NAME (symbol) != NULL) \
|
||
/* Put only the mangled name on the list. */ \
|
||
/* Advantage: "b foo<TAB>" completes to "b foo(int, int)" */ \
|
||
/* Disadvantage: "b foo__i<TAB>" doesn't complete. */ \
|
||
completion_list_add_name \
|
||
(SYMBOL_DEMANGLED_NAME (symbol), (sym_text), (len), (text), (word)); \
|
||
else \
|
||
completion_list_add_name \
|
||
(SYMBOL_NAME (symbol), (sym_text), (len), (text), (word)); \
|
||
} while (0)
|
||
|
||
/* Test to see if the symbol specified by SYMNAME (which is already
|
||
demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
|
||
characters. If so, add it to the current completion list. */
|
||
|
||
static void
|
||
completion_list_add_name (symname, sym_text, sym_text_len, text, word)
|
||
char *symname;
|
||
char *sym_text;
|
||
int sym_text_len;
|
||
char *text;
|
||
char *word;
|
||
{
|
||
int newsize;
|
||
int i;
|
||
|
||
/* clip symbols that cannot match */
|
||
|
||
if (strncmp (symname, sym_text, sym_text_len) != 0)
|
||
{
|
||
return;
|
||
}
|
||
|
||
/* Clip any symbol names that we've already considered. (This is a
|
||
time optimization) */
|
||
|
||
for (i = 0; i < return_val_index; ++i)
|
||
{
|
||
if (STREQ (symname, return_val[i]))
|
||
{
|
||
return;
|
||
}
|
||
}
|
||
|
||
/* We have a match for a completion, so add SYMNAME to the current list
|
||
of matches. Note that the name is moved to freshly malloc'd space. */
|
||
|
||
{
|
||
char *new;
|
||
if (word == sym_text)
|
||
{
|
||
new = xmalloc (strlen (symname) + 5);
|
||
strcpy (new, symname);
|
||
}
|
||
else if (word > sym_text)
|
||
{
|
||
/* Return some portion of symname. */
|
||
new = xmalloc (strlen (symname) + 5);
|
||
strcpy (new, symname + (word - sym_text));
|
||
}
|
||
else
|
||
{
|
||
/* Return some of SYM_TEXT plus symname. */
|
||
new = xmalloc (strlen (symname) + (sym_text - word) + 5);
|
||
strncpy (new, word, sym_text - word);
|
||
new[sym_text - word] = '\0';
|
||
strcat (new, symname);
|
||
}
|
||
|
||
/* Recheck for duplicates if we intend to add a modified symbol. */
|
||
if (word != sym_text)
|
||
{
|
||
for (i = 0; i < return_val_index; ++i)
|
||
{
|
||
if (STREQ (new, return_val[i]))
|
||
{
|
||
free (new);
|
||
return;
|
||
}
|
||
}
|
||
}
|
||
|
||
if (return_val_index + 3 > return_val_size)
|
||
{
|
||
newsize = (return_val_size *= 2) * sizeof (char *);
|
||
return_val = (char **) xrealloc ((char *) return_val, newsize);
|
||
}
|
||
return_val[return_val_index++] = new;
|
||
return_val[return_val_index] = NULL;
|
||
}
|
||
}
|
||
|
||
/* Return a NULL terminated array of all symbols (regardless of class) which
|
||
begin by matching TEXT. If the answer is no symbols, then the return value
|
||
is an array which contains only a NULL pointer.
|
||
|
||
Problem: All of the symbols have to be copied because readline frees them.
|
||
I'm not going to worry about this; hopefully there won't be that many. */
|
||
|
||
char **
|
||
make_symbol_completion_list (text, word)
|
||
char *text;
|
||
char *word;
|
||
{
|
||
register struct symbol *sym;
|
||
register struct symtab *s;
|
||
register struct partial_symtab *ps;
|
||
register struct minimal_symbol *msymbol;
|
||
register struct objfile *objfile;
|
||
register struct block *b, *surrounding_static_block = 0;
|
||
register int i, j;
|
||
struct partial_symbol **psym;
|
||
/* The symbol we are completing on. Points in same buffer as text. */
|
||
char *sym_text;
|
||
/* Length of sym_text. */
|
||
int sym_text_len;
|
||
|
||
/* Now look for the symbol we are supposed to complete on.
|
||
FIXME: This should be language-specific. */
|
||
{
|
||
char *p;
|
||
char quote_found;
|
||
char *quote_pos = NULL;
|
||
|
||
/* First see if this is a quoted string. */
|
||
quote_found = '\0';
|
||
for (p = text; *p != '\0'; ++p)
|
||
{
|
||
if (quote_found != '\0')
|
||
{
|
||
if (*p == quote_found)
|
||
/* Found close quote. */
|
||
quote_found = '\0';
|
||
else if (*p == '\\' && p[1] == quote_found)
|
||
/* A backslash followed by the quote character
|
||
doesn't end the string. */
|
||
++p;
|
||
}
|
||
else if (*p == '\'' || *p == '"')
|
||
{
|
||
quote_found = *p;
|
||
quote_pos = p;
|
||
}
|
||
}
|
||
if (quote_found == '\'')
|
||
/* A string within single quotes can be a symbol, so complete on it. */
|
||
sym_text = quote_pos + 1;
|
||
else if (quote_found == '"')
|
||
/* A double-quoted string is never a symbol, nor does it make sense
|
||
to complete it any other way. */
|
||
return NULL;
|
||
else
|
||
{
|
||
/* It is not a quoted string. Break it based on the characters
|
||
which are in symbols. */
|
||
while (p > text)
|
||
{
|
||
if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0')
|
||
--p;
|
||
else
|
||
break;
|
||
}
|
||
sym_text = p;
|
||
}
|
||
}
|
||
|
||
sym_text_len = strlen (sym_text);
|
||
|
||
return_val_size = 100;
|
||
return_val_index = 0;
|
||
return_val = (char **) xmalloc ((return_val_size + 1) * sizeof (char *));
|
||
return_val[0] = NULL;
|
||
|
||
/* Look through the partial symtabs for all symbols which begin
|
||
by matching SYM_TEXT. Add each one that you find to the list. */
|
||
|
||
ALL_PSYMTABS (objfile, ps)
|
||
{
|
||
/* If the psymtab's been read in we'll get it when we search
|
||
through the blockvector. */
|
||
if (ps->readin) continue;
|
||
|
||
for (psym = objfile->global_psymbols.list + ps->globals_offset;
|
||
psym < (objfile->global_psymbols.list + ps->globals_offset
|
||
+ ps->n_global_syms);
|
||
psym++)
|
||
{
|
||
/* If interrupted, then quit. */
|
||
QUIT;
|
||
COMPLETION_LIST_ADD_SYMBOL (*psym, sym_text, sym_text_len, text, word);
|
||
}
|
||
|
||
for (psym = objfile->static_psymbols.list + ps->statics_offset;
|
||
psym < (objfile->static_psymbols.list + ps->statics_offset
|
||
+ ps->n_static_syms);
|
||
psym++)
|
||
{
|
||
QUIT;
|
||
COMPLETION_LIST_ADD_SYMBOL (*psym, sym_text, sym_text_len, text, word);
|
||
}
|
||
}
|
||
|
||
/* At this point scan through the misc symbol vectors and add each
|
||
symbol you find to the list. Eventually we want to ignore
|
||
anything that isn't a text symbol (everything else will be
|
||
handled by the psymtab code above). */
|
||
|
||
ALL_MSYMBOLS (objfile, msymbol)
|
||
{
|
||
QUIT;
|
||
COMPLETION_LIST_ADD_SYMBOL (msymbol, sym_text, sym_text_len, text, word);
|
||
}
|
||
|
||
/* Search upwards from currently selected frame (so that we can
|
||
complete on local vars. */
|
||
|
||
for (b = get_selected_block (); b != NULL; b = BLOCK_SUPERBLOCK (b))
|
||
{
|
||
if (!BLOCK_SUPERBLOCK (b))
|
||
{
|
||
surrounding_static_block = b; /* For elmin of dups */
|
||
}
|
||
|
||
/* Also catch fields of types defined in this places which match our
|
||
text string. Only complete on types visible from current context. */
|
||
|
||
for (i = 0; i < BLOCK_NSYMS (b); i++)
|
||
{
|
||
sym = BLOCK_SYM (b, i);
|
||
COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
|
||
if (SYMBOL_CLASS (sym) == LOC_TYPEDEF)
|
||
{
|
||
struct type *t = SYMBOL_TYPE (sym);
|
||
enum type_code c = TYPE_CODE (t);
|
||
|
||
if (c == TYPE_CODE_UNION || c == TYPE_CODE_STRUCT)
|
||
{
|
||
for (j = TYPE_N_BASECLASSES (t); j < TYPE_NFIELDS (t); j++)
|
||
{
|
||
if (TYPE_FIELD_NAME (t, j))
|
||
{
|
||
completion_list_add_name (TYPE_FIELD_NAME (t, j),
|
||
sym_text, sym_text_len, text, word);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Go through the symtabs and check the externs and statics for
|
||
symbols which match. */
|
||
|
||
ALL_SYMTABS (objfile, s)
|
||
{
|
||
QUIT;
|
||
b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK);
|
||
for (i = 0; i < BLOCK_NSYMS (b); i++)
|
||
{
|
||
sym = BLOCK_SYM (b, i);
|
||
COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
|
||
}
|
||
}
|
||
|
||
ALL_SYMTABS (objfile, s)
|
||
{
|
||
QUIT;
|
||
b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK);
|
||
/* Don't do this block twice. */
|
||
if (b == surrounding_static_block) continue;
|
||
for (i = 0; i < BLOCK_NSYMS (b); i++)
|
||
{
|
||
sym = BLOCK_SYM (b, i);
|
||
COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
|
||
}
|
||
}
|
||
|
||
return (return_val);
|
||
}
|
||
|
||
/* Determine if PC is in the prologue of a function. The prologue is the area
|
||
between the first instruction of a function, and the first executable line.
|
||
Returns 1 if PC *might* be in prologue, 0 if definately *not* in prologue.
|
||
|
||
If non-zero, func_start is where we thing the prologue starts, possibly
|
||
by previous examination of symbol table information.
|
||
*/
|
||
|
||
int
|
||
in_prologue (pc, func_start)
|
||
CORE_ADDR pc;
|
||
CORE_ADDR func_start;
|
||
{
|
||
struct symtab_and_line sal;
|
||
CORE_ADDR func_addr, func_end;
|
||
|
||
if (!find_pc_partial_function (pc, NULL, &func_addr, &func_end))
|
||
goto nosyms; /* Might be in prologue */
|
||
|
||
sal = find_pc_line (func_addr, 0);
|
||
|
||
if (sal.line == 0)
|
||
goto nosyms;
|
||
|
||
if (sal.end > func_addr
|
||
&& sal.end <= func_end) /* Is prologue in function? */
|
||
return pc < sal.end; /* Yes, is pc in prologue? */
|
||
|
||
/* The line after the prologue seems to be outside the function. In this
|
||
case, tell the caller to find the prologue the hard way. */
|
||
|
||
return 1;
|
||
|
||
/* Come here when symtabs don't contain line # info. In this case, it is
|
||
likely that the user has stepped into a library function w/o symbols, or
|
||
is doing a stepi/nexti through code without symbols. */
|
||
|
||
nosyms:
|
||
|
||
/* If func_start is zero (meaning unknown) then we don't know whether pc is
|
||
in the prologue or not. I.E. it might be. */
|
||
|
||
if (!func_start) return 1;
|
||
|
||
/* We need to call the target-specific prologue skipping functions with the
|
||
function's start address because PC may be pointing at an instruction that
|
||
could be mistakenly considered part of the prologue. */
|
||
|
||
SKIP_PROLOGUE (func_start);
|
||
|
||
return pc < func_start;
|
||
}
|
||
|
||
|
||
void
|
||
_initialize_symtab ()
|
||
{
|
||
add_info ("variables", variables_info,
|
||
"All global and static variable names, or those matching REGEXP.");
|
||
add_info ("functions", functions_info,
|
||
"All function names, or those matching REGEXP.");
|
||
|
||
/* FIXME: This command has at least the following problems:
|
||
1. It prints builtin types (in a very strange and confusing fashion).
|
||
2. It doesn't print right, e.g. with
|
||
typedef struct foo *FOO
|
||
type_print prints "FOO" when we want to make it (in this situation)
|
||
print "struct foo *".
|
||
I also think "ptype" or "whatis" is more likely to be useful (but if
|
||
there is much disagreement "info types" can be fixed). */
|
||
add_info ("types", types_info,
|
||
"All type names, or those matching REGEXP.");
|
||
|
||
#if 0
|
||
add_info ("methods", methods_info,
|
||
"All method names, or those matching REGEXP::REGEXP.\n\
|
||
If the class qualifier is omitted, it is assumed to be the current scope.\n\
|
||
If the first REGEXP is omitted, then all methods matching the second REGEXP\n\
|
||
are listed.");
|
||
#endif
|
||
add_info ("sources", sources_info,
|
||
"Source files in the program.");
|
||
|
||
add_com ("rbreak", no_class, rbreak_command,
|
||
"Set a breakpoint for all functions matching REGEXP.");
|
||
|
||
/* Initialize the one built-in type that isn't language dependent... */
|
||
builtin_type_error = init_type (TYPE_CODE_ERROR, 0, 0,
|
||
"<unknown type>", (struct objfile *) NULL);
|
||
}
|