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/*- * Copyright (c) 1987, 1991, 1993 * The Regents of the University of California. 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. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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. * * @(#)endian.h 8.1 (Berkeley) 6/10/93 * $NetBSD: endian.h,v 1.5 1997/10/09 15:42:19 bouyer Exp $ * $FreeBSD: release/9.1.0/sys/ia64/include/endian.h 143063 2005-03-02 21:33:29Z joerg $ */ #ifndef _MACHINE_ENDIAN_H_ #define _MACHINE_ENDIAN_H_ #include <sys/cdefs.h> #include <sys/_types.h> /* * Define the order of 32-bit words in 64-bit words. */ #define _QUAD_HIGHWORD 1 #define _QUAD_LOWWORD 0 /* * Definitions for byte order, according to byte significance from low * address to high. */ #define _LITTLE_ENDIAN 1234 /* LSB first: i386, vax */ #define _BIG_ENDIAN 4321 /* MSB first: 68000, ibm, net */ #define _PDP_ENDIAN 3412 /* LSB first in word, MSW first in long */ #define _BYTE_ORDER _LITTLE_ENDIAN /* * Deprecated variants that don't have enough underscores to be useful in more * strict namespaces. */ #if __BSD_VISIBLE #define LITTLE_ENDIAN _LITTLE_ENDIAN #define BIG_ENDIAN _BIG_ENDIAN #define PDP_ENDIAN _PDP_ENDIAN #define BYTE_ORDER _BYTE_ORDER #endif #if defined(__CC_SUPPORTS___INLINE) && defined(__GNUCLIKE_ASM) static __inline __uint64_t __bswap64(__uint64_t _x) { __uint64_t __r; __asm __volatile("mux1 %0=%1,@rev" : "=r" (__r) : "r"(_x)); return __r; } static __inline __uint32_t __bswap32(__uint32_t _x) { return (__bswap64(_x) >> 32); } static __inline __uint16_t __bswap16(__uint16_t _x) { return (__bswap64(_x) >> 48); } #define __htonl(x) __bswap32(x) #define __htons(x) __bswap16(x) #define __ntohl(x) __bswap32(x) #define __ntohs(x) __bswap16(x) #else /* !(__CC_SUPPORTS___INLINE && __GNUCLIKE_ASM) */ /* * No optimizations are available for this compiler. Fall back to * non-optimized functions by defining the constant usually used to prevent * redefinition. */ #define _BYTEORDER_FUNC_DEFINED #endif /* __CC_SUPPORTS___INLINE && __GNUCLIKE_ASM */ #endif /* !_MACHINE_ENDIAN_H_ */