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/* gdb.c - gdb remote stub module */
/*
* Copyright (C) 2003 Free Software Foundation, Inc.
* Copyright (C) 2006 Lubomir Kundrak
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <grub/types.h>
#include <grub/misc.h>
#include <grub/mm.h>
#include <grub/err.h>
#include <grub/dl.h>
#include <grub/normal.h>
#include <grub/term.h>
#include <grub/cpu/gdb.h>
#include <grub/gdb.h>
#include <grub/serial.h>
#include <grub/i18n.h>
GRUB_MOD_LICENSE ("GPLv3+");
static grub_err_t
grub_cmd_gdbstub (struct grub_command *cmd __attribute__ ((unused)),
int argc, char **args)
{
struct grub_serial_port *port;
if (argc < 1)
return grub_error (GRUB_ERR_BAD_ARGUMENT, "port required");
port = grub_serial_find (args[0]);
if (!port)
return grub_errno;
grub_gdb_port = port;
/* TRANSLATORS: at this position GRUB waits for the user to do an action
in remote debugger, namely to tell it to establish connection. */
grub_puts_ (N_("Now connect the remote debugger, please."));
grub_gdb_breakpoint ();
return 0;
}
static grub_err_t
grub_cmd_gdbstop (struct grub_command *cmd __attribute__ ((unused)),
int argc __attribute__ ((unused)),
char **args __attribute__ ((unused)))
{
grub_gdb_port = NULL;
return 0;
}
static grub_err_t
grub_cmd_gdb_break (struct grub_command *cmd __attribute__ ((unused)),
int argc __attribute__ ((unused)),
char **args __attribute__ ((unused)))
{
if (!grub_gdb_port)
return grub_error (GRUB_ERR_BAD_ARGUMENT, "No GDB stub is running");
grub_gdb_breakpoint ();
return 0;
}
static grub_command_t cmd, cmd_stop, cmd_break;
GRUB_MOD_INIT (gdb)
{
grub_gdb_idtinit ();
cmd = grub_register_command_lockdown ("gdbstub", grub_cmd_gdbstub,
N_("PORT"),
/*
* TRANSLATORS: GDB stub is a small part of
* GDB functionality running on local host
* which allows remote debugger to
* connect to it.
*/
N_("Start GDB stub on given port"));
cmd_break = grub_register_command_lockdown ("gdbstub_break", grub_cmd_gdb_break,
/*
* TRANSLATORS: this refers to triggering
* a breakpoint so that the user will land
* into GDB.
*/
0, N_("Break into GDB"));
cmd_stop = grub_register_command_lockdown ("gdbstub_stop", grub_cmd_gdbstop,
0, N_("Stop GDB stub"));
}
GRUB_MOD_FINI (gdb)
{
grub_unregister_command (cmd);
grub_unregister_command (cmd_stop);
grub_gdb_idtrestore ();
}
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