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327f7197b0
(OBS): Put version.o first, so Makefile rebuild happens early. * command.h: Publicize prototype for not_just_help_class_command. * command.c: Remove proto. * maint.c: Mark "mt" as an abbrev, to avoid duplicated help output. Move "maint info" from class info to class maintenance, and improve text. * infrun.c: Move "stop" to class_obscure, and give it a function so it will not be seen as a global help topic. FIXME, it should be possible to set these attributes independently. * core.c (core_command): Make nicer error message for no core support.
226 lines
5.2 KiB
C
226 lines
5.2 KiB
C
/* Core dump and executable file functions above target vector, for GDB.
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Copyright 1986, 1987, 1989, 1991, 1992 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
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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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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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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., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include "defs.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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#include "frame.h" /* required by inferior.h */
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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 "bfd.h"
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#include "target.h"
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#include "gdbcore.h"
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extern char registers[];
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/* Hook for `exec_file_command' command to call. */
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void (*exec_file_display_hook) PARAMS ((char *)) = NULL;
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/* Binary file diddling handle for the core file. */
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bfd *core_bfd = NULL;
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/* Backward compatability with old way of specifying core files. */
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void
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core_file_command (filename, from_tty)
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char *filename;
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int from_tty;
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{
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struct target_ops *t;
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dont_repeat (); /* Either way, seems bogus. */
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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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(t->to_open) (filename, from_tty);
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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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/* 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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specify_exec_file_hook (hook)
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void (*hook) PARAMS ((char *));
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{
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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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close_exec_file ()
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{
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#ifdef FIXME
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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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reopen_exec_file ()
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{
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#ifdef FIXME
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if (exec_bfd)
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bfd_reopen (exec_bfd);
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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
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validate_files ()
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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.");
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else if (bfd_get_mtime(exec_bfd) > bfd_get_mtime(core_bfd))
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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 *
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get_exec_file (err)
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int err;
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{
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if (exec_bfd) return bfd_get_filename(exec_bfd);
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if (!err) return NULL;
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error ("No executable file specified.\n\
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Use the \"file\" or \"exec-file\" command.");
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return NULL;
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}
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/* Report a memory error with error(). */
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void
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memory_error (status, memaddr)
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int status;
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CORE_ADDR memaddr;
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{
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if (status == EIO)
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{
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/* Actually, address between memaddr and memaddr + len
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was out of bounds. */
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error ("Cannot access memory at address %s.", local_hex_string(memaddr));
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}
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else
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{
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error ("Error accessing memory address %s: %s.",
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local_hex_string (memaddr), safe_strerror (status));
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}
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}
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/* Same as target_read_memory, but report an error if can't read. */
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void
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read_memory (memaddr, myaddr, len)
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CORE_ADDR memaddr;
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char *myaddr;
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int len;
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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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/* Same as target_write_memory, but report an error if can't write. */
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void
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write_memory (memaddr, myaddr, len)
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CORE_ADDR memaddr;
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char *myaddr;
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int len;
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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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long
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read_memory_integer (memaddr, len)
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CORE_ADDR memaddr;
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int len;
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{
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char cbuf;
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short sbuf;
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int ibuf;
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long lbuf;
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if (len == sizeof (char))
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{
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read_memory (memaddr, &cbuf, len);
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return cbuf;
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}
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if (len == sizeof (short))
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{
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read_memory (memaddr, (char *)&sbuf, len);
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SWAP_TARGET_AND_HOST (&sbuf, sizeof (short));
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return sbuf;
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}
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if (len == sizeof (int))
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{
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read_memory (memaddr, (char *)&ibuf, len);
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SWAP_TARGET_AND_HOST (&ibuf, sizeof (int));
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return ibuf;
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}
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if (len == sizeof (lbuf))
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{
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read_memory (memaddr, (char *)&lbuf, len);
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SWAP_TARGET_AND_HOST (&lbuf, sizeof (lbuf));
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return lbuf;
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}
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error ("Cannot handle integers of %d bytes.", len);
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return -1; /* for lint */
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}
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void
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_initialize_core()
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{
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add_com ("core-file", class_files, core_file_command,
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"Use FILE as core dump for examining memory and registers.\n\
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No arg means have no core file. This command has been superseded by the\n\
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`target core' and `detach' commands.");
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}
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