mirror of
https://github.com/darlinghq/darling-xnu.git
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94 lines
2.8 KiB
C
94 lines
2.8 KiB
C
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/*
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* Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
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*
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* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
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*
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* This file contains Original Code and/or Modifications of Original Code
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* as defined in and that are subject to the Apple Public Source License
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* Version 2.0 (the 'License'). You may not use this file except in
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* compliance with the License. The rights granted to you under the License
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* may not be used to create, or enable the creation or redistribution of,
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* unlawful or unlicensed copies of an Apple operating system, or to
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* circumvent, violate, or enable the circumvention or violation of, any
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* terms of an Apple operating system software license agreement.
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*
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* Please obtain a copy of the License at
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* http://www.opensource.apple.com/apsl/ and read it before using this file.
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*
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* The Original Code and all software distributed under the License are
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* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
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* Please see the License for the specific language governing rights and
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* limitations under the License.
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*
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* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
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*/
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/*
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* @OSF_COPYRIGHT@
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*
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*/
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#ifndef _MACHINE_ENDIAN_H_
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#define _MACHINE_ENDIAN_H_
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/*
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* Definitions for byte order,
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* according to byte significance from low address to high.
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*/
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#define LITTLE_ENDIAN 1234 /* least-significant byte first (vax) */
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#define BIG_ENDIAN 4321 /* most-significant byte first (IBM, net) */
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#define PDP_ENDIAN 3412 /* LSB first in word, MSW first in long (pdp) */
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#define BYTE_ORDER LITTLE_ENDIAN /* byte order on i386 */
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#define ENDIAN LITTLE
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/*
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* Macros for network/external number representation conversion.
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* Use GNUC support to inline the byteswappers.
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*/
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#if !defined(ntohs)
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static __inline__ unsigned short ntohs(unsigned short);
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static __inline__
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unsigned short
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ntohs(unsigned short w_int)
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{
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return (unsigned short)((w_int << 8) | (w_int >> 8));
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}
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#endif
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#if !defined(htons)
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unsigned short htons(unsigned short);
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#define htons ntohs
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#endif
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#if !defined(ntohl)
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static __inline__ unsigned long ntohl(unsigned long);
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static __inline__
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unsigned long
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ntohl(unsigned long value)
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{
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#if defined(__clang__)
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return (unsigned long)__builtin_bswap32((unsigned int)value);
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#else
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unsigned long l = value;
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__asm__ volatile ("bswap %0" : "=r" (l) : "0" (l));
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return l;
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#endif
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}
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#endif
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#if !defined(htonl)
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unsigned long htonl(unsigned long);
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#define htonl ntohl
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#endif
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#define NTOHL(x) (x) = ntohl((unsigned long)x)
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#define NTOHS(x) (x) = ntohs((unsigned short)x)
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#define HTONL(x) (x) = htonl((unsigned long)x)
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#define HTONS(x) (x) = htons((unsigned short)x)
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#endif
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