1999-04-16 03:35:26 +02:00
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/* Core dump and executable file functions above target vector, for GDB.
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2001-03-06 09:22:02 +01:00
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Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1994, 1996, 1997, 1998,
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1999, 2000, 2001
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1999-04-16 03:35:26 +02:00
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Free Software Foundation, Inc.
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1999-07-07 22:19:36 +02:00
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This file is part of GDB.
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1999-04-16 03:35:26 +02:00
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1999-07-07 22:19:36 +02:00
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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
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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1999-04-16 03:35:26 +02:00
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1999-07-07 22:19:36 +02:00
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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1999-04-16 03:35:26 +02:00
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1999-07-07 22:19:36 +02:00
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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,
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Boston, MA 02111-1307, USA. */
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1999-04-16 03:35:26 +02:00
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#include "defs.h"
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#include "gdb_string.h"
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#include <errno.h>
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#include <signal.h>
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#include <fcntl.h>
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1999-07-07 22:19:36 +02:00
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#include "frame.h" /* required by inferior.h */
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1999-04-16 03:35:26 +02:00
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#include "inferior.h"
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#include "symtab.h"
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#include "command.h"
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#include "gdbcmd.h"
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2001-01-27 01:43:26 +01:00
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#include "symfile.h"
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1999-04-16 03:35:26 +02:00
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#include "bfd.h"
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#include "target.h"
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#include "gdbcore.h"
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#include "dis-asm.h"
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#include "language.h"
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#include "gdb_stat.h"
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#include "symfile.h"
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#include "objfiles.h"
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2000-11-30 Fernando Nasser <fnasser@redhat.com>
* linespec.h: New file. Declarations for linespec.c.
* linespec.c, alpha-tdep.c, breakpoint.c, parse.c, source.c,
symtab.c, tracepoint.c: Include the above.
* completer.c: New file. Line completion stuff for GDB.
(get_gdb_completer_word_break_characters,
get_gdb_completer_quote_characters): New functions. Accessors for
useful completer internal data.
(filename_completer, line_completion_function, skip_quoted): Moved
here from top.c.
* completer.h: New file. Declarations for the above.
* linespec.c (decode_line_1): Use
get_gdb_completer_word_break_characters and
get_gdb_completer_quote_characters.
* top.c: Include completer.h.
(filename_completer, line_completion_function, skip_quoted):
Moved to completer.c.
* corefile.c, exec.c, source.c, symfile.c, linespec.c: Include
completer.h.
* Makefile.in (SFILES): Add completer.c.
(COMMON_OBS): Add completer.o.
(completer.o): New target.
(linespec.o, alpha-tdep.o, breakpoint.o, parse.o, source.o,
symtab.o, tracepoint.o): Add linespec.h to dependencies list.
(corefile.o, exec.o, source.o, symfile.o, linespec.o): Add completer.h
to dependencies list.
2000-12-01 01:43:47 +01:00
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#include "completer.h"
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1999-04-16 03:35:26 +02:00
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/* Local function declarations. */
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2000-05-28 03:12:42 +02:00
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extern void _initialize_core (void);
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static void call_extra_exec_file_hooks (char *filename);
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1999-04-16 03:35:26 +02:00
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/* You can have any number of hooks for `exec_file_command' command to call.
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If there's only one hook, it is set in exec_file_display hook.
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If there are two or more hooks, they are set in exec_file_extra_hooks[],
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and exec_file_display_hook is set to a function that calls all of them.
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This extra complexity is needed to preserve compatibility with
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old code that assumed that only one hook could be set, and which called
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exec_file_display_hook directly. */
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2000-06-04 02:41:10 +02:00
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typedef void (*hook_type) (char *);
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1999-04-16 03:35:26 +02:00
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1999-07-07 22:19:36 +02:00
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hook_type exec_file_display_hook; /* the original hook */
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1999-04-16 03:35:26 +02:00
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static hook_type *exec_file_extra_hooks; /* array of additional hooks */
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1999-07-07 22:19:36 +02:00
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static int exec_file_hook_count = 0; /* size of array */
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1999-04-16 03:35:26 +02:00
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/* Binary file diddling handle for the core file. */
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bfd *core_bfd = NULL;
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1999-07-07 22:19:36 +02:00
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1999-04-16 03:35:26 +02:00
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/* Backward compatability with old way of specifying core files. */
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void
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2000-07-30 03:48:28 +02:00
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core_file_command (char *filename, int from_tty)
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1999-04-16 03:35:26 +02:00
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{
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struct target_ops *t;
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1999-07-07 22:19:36 +02:00
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dont_repeat (); /* Either way, seems bogus. */
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1999-04-16 03:35:26 +02:00
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t = find_core_target ();
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if (t != NULL)
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if (!filename)
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(t->to_detach) (filename, from_tty);
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else
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{
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1999-07-07 22:19:36 +02:00
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/* Yes, we were given the path of a core file. Do we already
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have a symbol file? If not, can we determine it from the
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core file? If we can, do so.
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*/
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1999-04-16 03:35:26 +02:00
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#ifdef HPUXHPPA
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1999-07-07 22:19:36 +02:00
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if (symfile_objfile == NULL)
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{
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char *symfile;
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symfile = t->to_core_file_to_sym_file (filename);
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if (symfile)
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{
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1999-12-07 04:56:43 +01:00
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char *symfile_copy = xstrdup (symfile);
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1999-07-07 22:19:36 +02:00
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2000-12-15 02:01:51 +01:00
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make_cleanup (xfree, symfile_copy);
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2001-01-27 01:43:26 +01:00
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symbol_file_add_main (symfile_copy, from_tty);
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1999-07-07 22:19:36 +02:00
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}
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else
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warning ("Unknown symbols for '%s'; use the 'symbol-file' command.", filename);
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}
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1999-04-16 03:35:26 +02:00
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#endif
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1999-07-07 22:19:36 +02:00
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(t->to_open) (filename, from_tty);
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1999-04-16 03:35:26 +02:00
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}
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else
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error ("GDB can't read core files on this machine.");
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}
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1999-07-07 22:19:36 +02:00
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1999-04-16 03:35:26 +02:00
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/* If there are two or more functions that wish to hook into exec_file_command,
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* this function will call all of the hook functions. */
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static void
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2000-07-30 03:48:28 +02:00
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call_extra_exec_file_hooks (char *filename)
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1999-04-16 03:35:26 +02:00
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{
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int i;
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for (i = 0; i < exec_file_hook_count; i++)
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1999-07-07 22:19:36 +02:00
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(*exec_file_extra_hooks[i]) (filename);
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1999-04-16 03:35:26 +02:00
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}
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/* Call this to specify the hook for exec_file_command to call back.
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This is called from the x-window display code. */
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void
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2000-08-10 02:58:09 +02:00
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specify_exec_file_hook (void (*hook) (char *))
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1999-04-16 03:35:26 +02:00
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{
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hook_type *new_array;
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if (exec_file_display_hook != NULL)
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{
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/* There's already a hook installed. Arrange to have both it
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* and the subsequent hooks called. */
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if (exec_file_hook_count == 0)
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{
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/* If this is the first extra hook, initialize the hook array. */
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1999-07-07 22:19:36 +02:00
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exec_file_extra_hooks = (hook_type *) xmalloc (sizeof (hook_type));
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1999-04-16 03:35:26 +02:00
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exec_file_extra_hooks[0] = exec_file_display_hook;
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exec_file_display_hook = call_extra_exec_file_hooks;
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exec_file_hook_count = 1;
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}
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/* Grow the hook array by one and add the new hook to the end.
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Yes, it's inefficient to grow it by one each time but since
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this is hardly ever called it's not a big deal. */
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exec_file_hook_count++;
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new_array =
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(hook_type *) xrealloc (exec_file_extra_hooks,
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1999-07-07 22:19:36 +02:00
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exec_file_hook_count * sizeof (hook_type));
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1999-04-16 03:35:26 +02:00
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exec_file_extra_hooks = new_array;
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exec_file_extra_hooks[exec_file_hook_count - 1] = hook;
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}
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else
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exec_file_display_hook = hook;
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}
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/* The exec file must be closed before running an inferior.
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If it is needed again after the inferior dies, it must
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be reopened. */
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void
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2000-07-30 03:48:28 +02:00
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close_exec_file (void)
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1999-04-16 03:35:26 +02:00
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{
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1999-07-07 22:19:36 +02:00
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#if 0 /* FIXME */
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1999-04-16 03:35:26 +02:00
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if (exec_bfd)
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bfd_tempclose (exec_bfd);
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#endif
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}
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void
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2000-07-30 03:48:28 +02:00
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reopen_exec_file (void)
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1999-04-16 03:35:26 +02:00
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{
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1999-07-07 22:19:36 +02:00
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#if 0 /* FIXME */
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1999-04-16 03:35:26 +02:00
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if (exec_bfd)
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bfd_reopen (exec_bfd);
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#else
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char *filename;
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int res;
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struct stat st;
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long mtime;
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/* Don't do anything if the current target isn't exec. */
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if (exec_bfd == NULL || strcmp (target_shortname, "exec") != 0)
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return;
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1999-07-07 22:19:36 +02:00
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1999-04-16 03:35:26 +02:00
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/* If the timestamp of the exec file has changed, reopen it. */
|
1999-12-07 04:56:43 +01:00
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filename = xstrdup (bfd_get_filename (exec_bfd));
|
2000-12-15 02:01:51 +01:00
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make_cleanup (xfree, filename);
|
1999-07-07 22:19:36 +02:00
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mtime = bfd_get_mtime (exec_bfd);
|
1999-04-16 03:35:26 +02:00
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res = stat (filename, &st);
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if (mtime && mtime != st.st_mtime)
|
2001-01-27 01:43:26 +01:00
|
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{
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exec_open (filename, 0);
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}
|
1999-04-16 03:35:26 +02:00
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#endif
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}
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/* If we have both a core file and an exec file,
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print a warning if they don't go together. */
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void
|
2000-07-30 03:48:28 +02:00
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validate_files (void)
|
1999-04-16 03:35:26 +02:00
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{
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if (exec_bfd && core_bfd)
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{
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if (!core_file_matches_executable_p (core_bfd, exec_bfd))
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warning ("core file may not match specified executable file.");
|
1999-07-07 22:19:36 +02:00
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else if (bfd_get_mtime (exec_bfd) > bfd_get_mtime (core_bfd))
|
1999-04-16 03:35:26 +02:00
|
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warning ("exec file is newer than core file.");
|
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}
|
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}
|
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|
/* Return the name of the executable file as a string.
|
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ERR nonzero means get error if there is none specified;
|
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|
otherwise return 0 in that case. */
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char *
|
2000-07-30 03:48:28 +02:00
|
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get_exec_file (int err)
|
1999-04-16 03:35:26 +02:00
|
|
|
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{
|
1999-07-07 22:19:36 +02:00
|
|
|
|
if (exec_bfd)
|
|
|
|
|
return bfd_get_filename (exec_bfd);
|
|
|
|
|
if (!err)
|
|
|
|
|
return NULL;
|
1999-04-16 03:35:26 +02:00
|
|
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|
|
error ("No executable file specified.\n\
|
|
|
|
|
Use the \"file\" or \"exec-file\" command.");
|
|
|
|
|
return NULL;
|
|
|
|
|
}
|
|
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|
1999-07-07 22:19:36 +02:00
|
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|
1999-04-16 03:35:26 +02:00
|
|
|
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/* Report a memory error with error(). */
|
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|
|
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void
|
2000-07-30 03:48:28 +02:00
|
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|
|
memory_error (int status, CORE_ADDR memaddr)
|
1999-04-16 03:35:26 +02:00
|
|
|
|
{
|
2000-02-02 01:21:19 +01:00
|
|
|
|
struct ui_file *tmp_stream = mem_fileopen ();
|
|
|
|
|
make_cleanup_ui_file_delete (tmp_stream);
|
1999-10-06 01:13:56 +02:00
|
|
|
|
|
1999-04-16 03:35:26 +02:00
|
|
|
|
if (status == EIO)
|
|
|
|
|
{
|
|
|
|
|
/* Actually, address between memaddr and memaddr + len
|
1999-07-07 22:19:36 +02:00
|
|
|
|
was out of bounds. */
|
1999-10-06 01:13:56 +02:00
|
|
|
|
fprintf_unfiltered (tmp_stream, "Cannot access memory at address ");
|
|
|
|
|
print_address_numeric (memaddr, 1, tmp_stream);
|
1999-04-16 03:35:26 +02:00
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
1999-10-06 01:13:56 +02:00
|
|
|
|
fprintf_filtered (tmp_stream, "Error accessing memory address ");
|
|
|
|
|
print_address_numeric (memaddr, 1, tmp_stream);
|
|
|
|
|
fprintf_filtered (tmp_stream, ": %s.",
|
1999-07-07 22:19:36 +02:00
|
|
|
|
safe_strerror (status));
|
1999-04-16 03:35:26 +02:00
|
|
|
|
}
|
1999-10-06 01:13:56 +02:00
|
|
|
|
|
|
|
|
|
error_stream (tmp_stream);
|
1999-04-16 03:35:26 +02:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Same as target_read_memory, but report an error if can't read. */
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|
void
|
2000-07-30 03:48:28 +02:00
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read_memory (CORE_ADDR memaddr, char *myaddr, int len)
|
1999-04-16 03:35:26 +02:00
|
|
|
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{
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|
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int status;
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status = target_read_memory (memaddr, myaddr, len);
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if (status != 0)
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memory_error (status, memaddr);
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}
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/* Like target_read_memory, but slightly different parameters. */
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int
|
2000-07-30 03:48:28 +02:00
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dis_asm_read_memory (bfd_vma memaddr, bfd_byte *myaddr, unsigned int len,
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disassemble_info *info)
|
1999-04-16 03:35:26 +02:00
|
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|
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{
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return target_read_memory (memaddr, (char *) myaddr, len);
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}
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/* Like memory_error with slightly different parameters. */
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void
|
2000-07-30 03:48:28 +02:00
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dis_asm_memory_error (int status, bfd_vma memaddr, disassemble_info *info)
|
1999-04-16 03:35:26 +02:00
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{
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memory_error (status, memaddr);
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}
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/* Like print_address with slightly different parameters. */
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void
|
2000-07-30 03:48:28 +02:00
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dis_asm_print_address (bfd_vma addr, struct disassemble_info *info)
|
1999-04-16 03:35:26 +02:00
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{
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print_address (addr, info->stream);
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}
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/* Same as target_write_memory, but report an error if can't write. */
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void
|
2000-07-30 03:48:28 +02:00
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write_memory (CORE_ADDR memaddr, char *myaddr, int len)
|
1999-04-16 03:35:26 +02:00
|
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{
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int status;
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status = target_write_memory (memaddr, myaddr, len);
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if (status != 0)
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memory_error (status, memaddr);
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}
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/* Read an integer from debugged memory, given address and number of bytes. */
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LONGEST
|
2000-07-30 03:48:28 +02:00
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read_memory_integer (CORE_ADDR memaddr, int len)
|
1999-04-16 03:35:26 +02:00
|
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|
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{
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char buf[sizeof (LONGEST)];
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read_memory (memaddr, buf, len);
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return extract_signed_integer (buf, len);
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}
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|
|
ULONGEST
|
2000-07-30 03:48:28 +02:00
|
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|
|
read_memory_unsigned_integer (CORE_ADDR memaddr, int len)
|
1999-04-16 03:35:26 +02:00
|
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|
|
{
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|
|
char buf[sizeof (ULONGEST)];
|
|
|
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|
|
read_memory (memaddr, buf, len);
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|
|
return extract_unsigned_integer (buf, len);
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}
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|
|
void
|
2000-07-30 03:48:28 +02:00
|
|
|
|
read_memory_string (CORE_ADDR memaddr, char *buffer, int max_len)
|
1999-04-16 03:35:26 +02:00
|
|
|
|
{
|
1999-07-07 22:19:36 +02:00
|
|
|
|
register char *cp;
|
1999-04-16 03:35:26 +02:00
|
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|
|
register int i;
|
|
|
|
|
int cnt;
|
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|
|
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|
|
cp = buffer;
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|
|
while (1)
|
|
|
|
|
{
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|
|
if (cp - buffer >= max_len)
|
1999-07-07 22:19:36 +02:00
|
|
|
|
{
|
|
|
|
|
buffer[max_len - 1] = '\0';
|
|
|
|
|
break;
|
|
|
|
|
}
|
1999-04-16 03:35:26 +02:00
|
|
|
|
cnt = max_len - (cp - buffer);
|
|
|
|
|
if (cnt > 8)
|
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|
|
|
cnt = 8;
|
|
|
|
|
read_memory (memaddr + (int) (cp - buffer), cp, cnt);
|
|
|
|
|
for (i = 0; i < cnt && *cp; i++, cp++)
|
1999-07-07 22:19:36 +02:00
|
|
|
|
; /* null body */
|
1999-04-16 03:35:26 +02:00
|
|
|
|
|
|
|
|
|
if (i < cnt && !*cp)
|
1999-07-07 22:19:36 +02:00
|
|
|
|
break;
|
1999-04-16 03:35:26 +02:00
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
1999-07-07 22:19:36 +02:00
|
|
|
|
|
1999-04-16 03:35:26 +02:00
|
|
|
|
#if 0
|
|
|
|
|
/* Enable after 4.12. It is not tested. */
|
|
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|
|
|
|
|
|
|
/* Search code. Targets can just make this their search function, or
|
|
|
|
|
if the protocol has a less general search function, they can call this
|
|
|
|
|
in the cases it can't handle. */
|
|
|
|
|
void
|
2000-08-10 02:58:09 +02:00
|
|
|
|
generic_search (int len, char *data, char *mask, CORE_ADDR startaddr,
|
|
|
|
|
int increment, CORE_ADDR lorange, CORE_ADDR hirange,
|
|
|
|
|
CORE_ADDR *addr_found, char *data_found)
|
1999-04-16 03:35:26 +02:00
|
|
|
|
{
|
|
|
|
|
int i;
|
|
|
|
|
CORE_ADDR curaddr = startaddr;
|
|
|
|
|
|
|
|
|
|
while (curaddr >= lorange && curaddr < hirange)
|
|
|
|
|
{
|
|
|
|
|
read_memory (curaddr, data_found, len);
|
|
|
|
|
for (i = 0; i < len; ++i)
|
|
|
|
|
if ((data_found[i] & mask[i]) != data[i])
|
|
|
|
|
goto try_again;
|
|
|
|
|
/* It matches. */
|
|
|
|
|
*addr_found = curaddr;
|
|
|
|
|
return;
|
|
|
|
|
|
|
|
|
|
try_again:
|
|
|
|
|
curaddr += increment;
|
|
|
|
|
}
|
1999-07-07 22:19:36 +02:00
|
|
|
|
*addr_found = (CORE_ADDR) 0;
|
1999-04-16 03:35:26 +02:00
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
#endif /* 0 */
|
|
|
|
|
|
|
|
|
|
/* The current default bfd target. Points to storage allocated for
|
|
|
|
|
gnutarget_string. */
|
|
|
|
|
char *gnutarget;
|
|
|
|
|
|
|
|
|
|
/* Same thing, except it is "auto" not NULL for the default case. */
|
|
|
|
|
static char *gnutarget_string;
|
|
|
|
|
|
2000-05-28 03:12:42 +02:00
|
|
|
|
static void set_gnutarget_command (char *, int, struct cmd_list_element *);
|
1999-04-16 03:35:26 +02:00
|
|
|
|
|
|
|
|
|
static void
|
2000-07-30 03:48:28 +02:00
|
|
|
|
set_gnutarget_command (char *ignore, int from_tty, struct cmd_list_element *c)
|
1999-04-16 03:35:26 +02:00
|
|
|
|
{
|
|
|
|
|
if (STREQ (gnutarget_string, "auto"))
|
|
|
|
|
gnutarget = NULL;
|
|
|
|
|
else
|
|
|
|
|
gnutarget = gnutarget_string;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Set the gnutarget. */
|
|
|
|
|
void
|
2000-07-30 03:48:28 +02:00
|
|
|
|
set_gnutarget (char *newtarget)
|
1999-04-16 03:35:26 +02:00
|
|
|
|
{
|
|
|
|
|
if (gnutarget_string != NULL)
|
2000-12-15 02:01:51 +01:00
|
|
|
|
xfree (gnutarget_string);
|
1999-04-16 03:35:26 +02:00
|
|
|
|
gnutarget_string = savestring (newtarget, strlen (newtarget));
|
|
|
|
|
set_gnutarget_command (NULL, 0, NULL);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void
|
2000-07-30 03:48:28 +02:00
|
|
|
|
_initialize_core (void)
|
1999-04-16 03:35:26 +02:00
|
|
|
|
{
|
|
|
|
|
struct cmd_list_element *c;
|
|
|
|
|
c = add_cmd ("core-file", class_files, core_file_command,
|
|
|
|
|
"Use FILE as core dump for examining memory and registers.\n\
|
|
|
|
|
No arg means have no core file. This command has been superseded by the\n\
|
|
|
|
|
`target core' and `detach' commands.", &cmdlist);
|
|
|
|
|
c->completer = filename_completer;
|
|
|
|
|
|
|
|
|
|
c = add_set_cmd ("gnutarget", class_files, var_string_noescape,
|
1999-07-07 22:19:36 +02:00
|
|
|
|
(char *) &gnutarget_string,
|
|
|
|
|
"Set the current BFD target.\n\
|
1999-04-16 03:35:26 +02:00
|
|
|
|
Use `set gnutarget auto' to specify automatic detection.",
|
1999-07-07 22:19:36 +02:00
|
|
|
|
&setlist);
|
1999-04-16 03:35:26 +02:00
|
|
|
|
c->function.sfunc = set_gnutarget_command;
|
|
|
|
|
add_show_from_set (c, &showlist);
|
|
|
|
|
|
|
|
|
|
if (getenv ("GNUTARGET"))
|
|
|
|
|
set_gnutarget (getenv ("GNUTARGET"));
|
|
|
|
|
else
|
|
|
|
|
set_gnutarget ("auto");
|
|
|
|
|
}
|