bsd/sys/_endian.h

   1 /*
   2  * Copyright (c) 2006 Apple Computer, Inc. All Rights Reserved.
   3  *
   4  * @APPLE_LICENSE_OSREFERENCE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License.  The rights granted to you under the
  10  * License may not be used to create, or enable the creation or
  11  * redistribution of, unlawful or unlicensed copies of an Apple operating
  12  * system, or to circumvent, violate, or enable the circumvention or
  13  * violation of, any terms of an Apple operating system software license
  14  * agreement.
  15  *
  16  * Please obtain a copy of the License at
  17  * http://www.opensource.apple.com/apsl/ and read it before using this
  18  * file.
  19  *
  20  * The Original Code and all software distributed under the License are
  21  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  22  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  23  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  24  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  25  * Please see the License for the specific language governing rights and
  26  * limitations under the License.
  27  *
  28  * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
  29  */
  30
  31 /*
  32  * Copyright (c) 1995 NeXT Computer, Inc. All rights reserved.
  33  * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
  34  *
  35  * @APPLE_LICENSE_OSREFERENCE_HEADER_START@
  36  *
  37  * This file contains Original Code and/or Modifications of Original Code
  38  * as defined in and that are subject to the Apple Public Source License
  39  * Version 2.0 (the 'License'). You may not use this file except in
  40  * compliance with the License.  The rights granted to you under the
  41  * License may not be used to create, or enable the creation or
  42  * redistribution of, unlawful or unlicensed copies of an Apple operating
  43  * system, or to circumvent, violate, or enable the circumvention or
  44  * violation of, any terms of an Apple operating system software license
  45  * agreement.
  46  *
  47  * Please obtain a copy of the License at
  48  * http://www.opensource.apple.com/apsl/ and read it before using this
  49  * file.
  50  *
  51  * The Original Code and all software distributed under the License are
  52  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  53  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  54  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  55  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  56  * Please see the License for the specific language governing rights and
  57  * limitations under the License.
  58  *
  59  * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
  60  */
  61 /*
  62  * Copyright (c) 1987, 1991, 1993
  63  *      The Regents of the University of California.  All rights reserved.
  64  *
  65  * Redistribution and use in source and binary forms, with or without
  66  * modification, are permitted provided that the following conditions
  67  * are met:
  68  * 1. Redistributions of source code must retain the above copyright
  69  *    notice, this list of conditions and the following disclaimer.
  70  * 2. Redistributions in binary form must reproduce the above copyright
  71  *    notice, this list of conditions and the following disclaimer in the
  72  *    documentation and/or other materials provided with the distribution.
  73  * 3. All advertising materials mentioning features or use of this software
  74  *    must display the following acknowledgement:
  75  *      This product includes software developed by the University of
  76  *      California, Berkeley and its contributors.
  77  * 4. Neither the name of the University nor the names of its contributors
  78  *    may be used to endorse or promote products derived from this software
  79  *    without specific prior written permission.
  80  *
  81  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  82  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  83  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  84  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  85  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  86  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  87  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  88  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  89  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  90  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  91  * SUCH DAMAGE.
  92  */
  93
  94 #ifndef _SYS__ENDIAN_H_
  95 #define _SYS__ENDIAN_H_
  96
  97 #include <sys/cdefs.h>
  98
  99 /*
 100  * Macros for network/external number representation conversion.
 101  */
 102 #if __DARWIN_BYTE_ORDER == __DARWIN_BIG_ENDIAN && !defined(lint)
 103 #define ntohl(x)        (x)
 104 #define ntohs(x)        (x)
 105 #define htonl(x)        (x)
 106 #define htons(x)        (x)
 107
 108 #if     defined(KERNEL) || !defined(_POSIX_C_SOURCE)
 109 #define NTOHL(x)        (x)
 110 #define NTOHS(x)        (x)
 111 #define HTONL(x)        (x)
 112 #define HTONS(x)        (x)
 113 #endif /* defined(KERNEL) || !defined(_POSIX_C_SOURCE) */
 114
 115 #else
 116
 117 #if !defined(__ASSEMBLER__)
 118
 119 #include <stdint.h>
 120 #include <machine/byte_order.h>
 121
 122 __BEGIN_DECLS
 123 uint16_t        ntohs(uint16_t);
 124 uint16_t        htons(uint16_t);
 125 uint32_t        ntohl(uint32_t);
 126 uint32_t        htonl(uint32_t);
 127 __END_DECLS
 128 #endif /* !defined(__ASSEMBLER__) */
 129
 130 #define ntohs(x)        NXSwapBigShortToHost(x)
 131 #define htons(x)        NXSwapHostShortToBig(x)
 132
 133 #if defined(__LP64__)
 134 #define ntohl(x)        NXSwapBigIntToHost(x)
 135 #define htonl(x)        NXSwapHostIntToBig(x)
 136 #else
 137 #define ntohl(x)        NXSwapBigLongToHost(x)
 138 #define htonl(x)        NXSwapHostLongToBig(x)
 139 #endif /* defined(__LP64__) */
 140
 141 #if     defined(KERNEL) || !defined(_POSIX_C_SOURCE)
 142 #define NTOHL(x)        (x) = ntohl((u_long)x)
 143 #define NTOHS(x)        (x) = ntohs((u_short)x)
 144 #define HTONL(x)        (x) = htonl((u_long)x)
 145 #define HTONS(x)        (x) = htons((u_short)x)
 146 #endif /* defined(KERNEL) || !defined(_POSIX_C_SOURCE) */
 147 #endif /* __DARWIN_BYTE_ORDER != __DARWIN_BIG_ENDIAN || defined(lint) */
 148 #endif /* !_SYS__ENDIAN_H_ */