/*
 * Copyright (c) 2002 Hiroaki Etoh.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 * $DragonFly: src/sys/libkern/stack_protector.c,v 1.5 2005/04/15 18:07:13 joerg Exp $
 */

#include <sys/param.h>
#include <sys/endian.h>

void __stack_smash_handler(char[], int);

#if BYTE_ORDER == LITTLE_ENDIAN
int __guard = 0x00000aff;
#else
int __guard = 0xff0a0000;
#endif

void 
__stack_smash_handler(char func[], int damaged)
{
#ifdef __i386__
	void *caller;
	__asm __volatile("movl 4(%%ebp), %0" : "=r" (caller));
	panic("stack overflow in function %p (%s)", caller, func);
#else
	panic("stack overflow in function %s", func);
#endif
}