halhalt.c

一个免费的SMART CARD OS系统。

/* ============================================================================
   Project Name : jayaCard
   Module Name  : proto/hal/<template>/halhalt.c
   Version : $Id: halhalt.c,v 1.7 2004/01/11 09:56:33 dgil Exp $

	Description: halt the processor in a secure way

    The Original Code is jayaCard code.

    The Initial Developer of the Original Code is Gilles Dumortier.

    Portions created by the Initial Developer are Copyright (C) 2002-2004 the
    Initial Developer. All Rights Reserved.

    Contributor(s):

    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 2 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; see http://www.gnu.org/licenses/gpl.html

   History Rev	Description
   011903 dgil	wrote it from scratch
   ============================================================================
*/

#include "precomp.h"

/* =========================================================================
	__hal_halt()

	Halt the processor. An hardware reset is required to restart the COS
   ========================================================================= */

void __hal_halt(void)
{
	if (lasterr==SUCCESS) BIOS_SETERR(ERR_FAULT);

	/* please avoid these because its very UNSECURE
	   hint: think about a flashy attack and a while loop exiting ...
	*/
loop:
	while (1);
	goto loop;
	/* so try to use a microprocessor specific state / flag / mode
	   or use my special secret implementation ;-)
	*/
}

/* =========================================================================
	That's all folks !
   ========================================================================= */