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/* $OpenBSD: endian.h,v 1.2 1998/12/05 17:29:50 mickey Exp $ */
/*
* Copyright (c) 1998 Michael Shalayeff
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Michael Shalayeff.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
#ifndef _MACHINE_ENDIAN_H_
#define _MACHINE_ENDIAN_H_
#ifdef __GNUC__
#define __swap32md(x) ({ \
register u_int32_t __swap32md_x, __swap32md_t; \
\
__asm ("shd %2,%2,8,%0 ! dep %0,15,8,%0 ! shd %%r0,%2,16,%1 !" \
"extru %2,7,8,%0 ! dep %1,23,8,%0" \
: "=r" (__swap32md_x), "=r" (__swap32md_t) : "r" (x)); \
__swap32md_x; \
})
#define __swap16md(x) ({ \
register u_int16_t __swap16md_x = (x); \
\
__asm ("shd %0,%0,24,%0 ! extru %0,15,8,%0 ! dep %%r0,15,16,%0" \
: "=r" (__swap16md_x)); \
__swap16md_x; \
})
/* Tell sys/endian.h we have MD variants of the swap macros. */
/* #define MD_SWAP */
#endif /* __GNUC__ */
#define BYTE_ORDER 4321
#include <sys/endian.h>
#endif /* !_MACHINE_ENDIAN_H_ */
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