/* $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 #endif /* !_MACHINE_ENDIAN_H_ */