90 lines
2.6 KiB
C
90 lines
2.6 KiB
C
/* gdb.c - gdb remote stub module */
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/*
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* Copyright (C) 2003 Free Software Foundation, Inc.
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* Copyright (C) 2006 Lubomir Kundrak
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*
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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 3 of the License, or
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* (at your option) any later version.
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*
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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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*
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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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*/
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#include <grub/types.h>
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#include <grub/misc.h>
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#include <grub/mm.h>
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#include <grub/err.h>
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#include <grub/dl.h>
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#include <grub/normal.h>
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#include <grub/term.h>
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#include <grub/cpu/gdb.h>
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#include <grub/gdb.h>
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#include <grub/serial.h>
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#include <grub/i18n.h>
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GRUB_MOD_LICENSE ("GPLv3+");
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static grub_err_t
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grub_cmd_gdbstub (struct grub_command *cmd __attribute__ ((unused)),
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int argc, char **args)
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{
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struct grub_serial_port *port;
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if (argc < 1)
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return grub_error (GRUB_ERR_BAD_ARGUMENT, "port required");
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port = grub_serial_find (args[0]);
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if (!port)
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return grub_errno;
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grub_gdb_port = port;
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grub_puts_ (N_("Now connect the remote debugger, please."));
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grub_gdb_breakpoint ();
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return 0;
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}
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static grub_err_t
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grub_cmd_gdbstop (struct grub_command *cmd __attribute__ ((unused)),
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int argc __attribute__ ((unused)),
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char **args __attribute__ ((unused)))
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{
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grub_gdb_port = NULL;
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return 0;
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}
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static grub_err_t
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grub_cmd_gdb_break (struct grub_command *cmd __attribute__ ((unused)),
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int argc __attribute__ ((unused)),
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char **args __attribute__ ((unused)))
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{
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if (!grub_gdb_port)
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return grub_error (GRUB_ERR_BAD_ARGUMENT, "No GDB stub is running");
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grub_gdb_breakpoint ();
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return 0;
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}
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static grub_command_t cmd, cmd_stop, cmd_break;
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GRUB_MOD_INIT (gdb)
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{
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grub_gdb_idtinit ();
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cmd = grub_register_command ("gdbstub", grub_cmd_gdbstub,
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N_("PORT"), N_("Start GDB stub on given port"));
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cmd_break = grub_register_command ("gdbstub_break", grub_cmd_gdb_break,
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0, N_("Break into GDB"));
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cmd_stop = grub_register_command ("gdbstub_stop", grub_cmd_gdbstop,
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0, N_("Stop GDB stub"));
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}
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GRUB_MOD_FINI (gdb)
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{
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grub_unregister_command (cmd);
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grub_unregister_command (cmd_stop);
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grub_gdb_idtrestore ();
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}
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