190868Smike/*- 266458Sdfr * Copyright (c) 1987, 1991, 1993 366458Sdfr * The Regents of the University of California. All rights reserved. 466458Sdfr * 566458Sdfr * Redistribution and use in source and binary forms, with or without 666458Sdfr * modification, are permitted provided that the following conditions 766458Sdfr * are met: 866458Sdfr * 1. Redistributions of source code must retain the above copyright 966458Sdfr * notice, this list of conditions and the following disclaimer. 1066458Sdfr * 2. Redistributions in binary form must reproduce the above copyright 1166458Sdfr * notice, this list of conditions and the following disclaimer in the 1266458Sdfr * documentation and/or other materials provided with the distribution. 1366458Sdfr * 4. Neither the name of the University nor the names of its contributors 1466458Sdfr * may be used to endorse or promote products derived from this software 1566458Sdfr * without specific prior written permission. 1666458Sdfr * 1766458Sdfr * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 1866458Sdfr * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1966458Sdfr * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2066458Sdfr * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 2166458Sdfr * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2266458Sdfr * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2366458Sdfr * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2466458Sdfr * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2566458Sdfr * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2666458Sdfr * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2766458Sdfr * SUCH DAMAGE. 2866458Sdfr * 2966458Sdfr * @(#)endian.h 8.1 (Berkeley) 6/10/93 3090868Smike * $NetBSD: endian.h,v 1.5 1997/10/09 15:42:19 bouyer Exp $ 3190868Smike * $FreeBSD$ 3266458Sdfr */ 3366458Sdfr 3490868Smike#ifndef _MACHINE_ENDIAN_H_ 3590868Smike#define _MACHINE_ENDIAN_H_ 3666458Sdfr 3790868Smike#include <sys/cdefs.h> 38102227Smike#include <sys/_types.h> 3990868Smike 4066458Sdfr/* 4166458Sdfr * Define the order of 32-bit words in 64-bit words. 4266458Sdfr */ 43118382Sobrien#define _QUAD_HIGHWORD 1 44118382Sobrien#define _QUAD_LOWWORD 0 4566458Sdfr 4666458Sdfr/* 4766458Sdfr * Definitions for byte order, according to byte significance from low 4866458Sdfr * address to high. 4966458Sdfr */ 5094362Smike#define _LITTLE_ENDIAN 1234 /* LSB first: i386, vax */ 5194362Smike#define _BIG_ENDIAN 4321 /* MSB first: 68000, ibm, net */ 5294362Smike#define _PDP_ENDIAN 3412 /* LSB first in word, MSW first in long */ 5366458Sdfr 5494362Smike#define _BYTE_ORDER _LITTLE_ENDIAN 5566458Sdfr 5694362Smike/* 5794362Smike * Deprecated variants that don't have enough underscores to be useful in more 5894362Smike * strict namespaces. 5994362Smike */ 6094362Smike#if __BSD_VISIBLE 6194362Smike#define LITTLE_ENDIAN _LITTLE_ENDIAN 6294362Smike#define BIG_ENDIAN _BIG_ENDIAN 6394362Smike#define PDP_ENDIAN _PDP_ENDIAN 6494362Smike#define BYTE_ORDER _BYTE_ORDER 6594362Smike#endif 6694362Smike 67143063Sjoerg#if defined(__CC_SUPPORTS___INLINE) && defined(__GNUCLIKE_ASM) 6884638Sdfr 6984638Sdfrstatic __inline __uint64_t 70118382Sobrien__bswap64(__uint64_t _x) 7184638Sdfr{ 7284638Sdfr __uint64_t __r; 73118382Sobrien 7484638Sdfr __asm __volatile("mux1 %0=%1,@rev" 75118382Sobrien : "=r" (__r) : "r"(_x)); 7684638Sdfr return __r; 7784638Sdfr} 7884638Sdfr 7984638Sdfrstatic __inline __uint32_t 80118382Sobrien__bswap32(__uint32_t _x) 8184638Sdfr{ 8290868Smike 83118382Sobrien return (__bswap64(_x) >> 32); 8484638Sdfr} 8584638Sdfr 8684638Sdfrstatic __inline __uint16_t 87118382Sobrien__bswap16(__uint16_t _x) 8884638Sdfr{ 8990868Smike 90118382Sobrien return (__bswap64(_x) >> 48); 9184638Sdfr} 9284638Sdfr 9391959Smike#define __htonl(x) __bswap32(x) 9491959Smike#define __htons(x) __bswap16(x) 9591959Smike#define __ntohl(x) __bswap32(x) 9691959Smike#define __ntohs(x) __bswap16(x) 9784638Sdfr 98143063Sjoerg#else /* !(__CC_SUPPORTS___INLINE && __GNUCLIKE_ASM) */ 99103814Smike 100103814Smike/* 101103814Smike * No optimizations are available for this compiler. Fall back to 102103814Smike * non-optimized functions by defining the constant usually used to prevent 103103814Smike * redefinition. 104103814Smike */ 105103814Smike#define _BYTEORDER_FUNC_DEFINED 106103814Smike 107143063Sjoerg#endif /* __CC_SUPPORTS___INLINE && __GNUCLIKE_ASM */ 108103814Smike 10990868Smike#endif /* !_MACHINE_ENDIAN_H_ */ 110