bsd/sys/_endian.h

   1 /*
   2  * Copyright (c) 2004 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22
  23 /*
  24  * Copyright (c) 1995 NeXT Computer, Inc. All rights reserved.
  25  * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
  26  *
  27  * @APPLE_LICENSE_HEADER_START@
  28  *
  29  * The contents of this file constitute Original Code as defined in and
  30  * are subject to the Apple Public Source License Version 1.1 (the
  31  * "License").  You may not use this file except in compliance with the
  32  * License.  Please obtain a copy of the License at
  33  * http://www.apple.com/publicsource and read it before using this file.
  34  *
  35  * This Original Code and all software distributed under the License are
  36  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  37  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  38  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  39  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  40  * License for the specific language governing rights and limitations
  41  * under the License.
  42  *
  43  * @APPLE_LICENSE_HEADER_END@
  44  */
  45 /*
  46  * Copyright (c) 1987, 1991, 1993
  47  *      The Regents of the University of California.  All rights reserved.
  48  *
  49  * Redistribution and use in source and binary forms, with or without
  50  * modification, are permitted provided that the following conditions
  51  * are met:
  52  * 1. Redistributions of source code must retain the above copyright
  53  *    notice, this list of conditions and the following disclaimer.
  54  * 2. Redistributions in binary form must reproduce the above copyright
  55  *    notice, this list of conditions and the following disclaimer in the
  56  *    documentation and/or other materials provided with the distribution.
  57  * 3. All advertising materials mentioning features or use of this software
  58  *    must display the following acknowledgement:
  59  *      This product includes software developed by the University of
  60  *      California, Berkeley and its contributors.
  61  * 4. Neither the name of the University nor the names of its contributors
  62  *    may be used to endorse or promote products derived from this software
  63  *    without specific prior written permission.
  64  *
  65  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  66  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  67  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  68  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  69  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  70  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  71  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  72  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  73  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  74  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  75  * SUCH DAMAGE.
  76  */
  77
  78 #ifndef _SYS__ENDIAN_H_
  79 #define _SYS__ENDIAN_H_
  80
  81 #include <sys/cdefs.h>
  82
  83 /*
  84  * Macros for network/external number representation conversion.
  85  */
  86 #if __DARWIN_BYTE_ORDER == __DARWIN_BIG_ENDIAN && !defined(lint)
  87 #define ntohl(x)        (x)
  88 #define ntohs(x)        (x)
  89 #define htonl(x)        (x)
  90 #define htons(x)        (x)
  91
  92 #if     defined(KERNEL) || !defined(_POSIX_C_SOURCE)
  93 #define NTOHL(x)        (x)
  94 #define NTOHS(x)        (x)
  95 #define HTONL(x)        (x)
  96 #define HTONS(x)        (x)
  97 #endif /* defined(KERNEL) || !defined(_POSIX_C_SOURCE) */
  98
  99 #else
 100
 101 #if !defined(__ASSEMBLER__)
 102
 103 #include <stdint.h>
 104 #include <machine/byte_order.h>
 105
 106 __BEGIN_DECLS
 107 uint16_t        ntohs(uint16_t);
 108 uint16_t        htons(uint16_t);
 109 uint32_t        ntohl(uint32_t);
 110 uint32_t        htonl(uint32_t);
 111 __END_DECLS
 112 #endif /* !defined(__ASSEMBLER__) */
 113
 114 #define ntohs(x)        NXSwapBigShortToHost(x)
 115 #define htons(x)        NXSwapHostShortToBig(x)
 116
 117 #if defined(__LP64__)
 118 #define ntohl(x)        NXSwapBigIntToHost(x)
 119 #define htonl(x)        NXSwapHostIntToBig(x)
 120 #else
 121 #define ntohl(x)        NXSwapBigLongToHost(x)
 122 #define htonl(x)        NXSwapHostLongToBig(x)
 123 #endif /* defined(__LP64__) */
 124
 125 #if     defined(KERNEL) || !defined(_POSIX_C_SOURCE)
 126 #define NTOHL(x)        (x) = ntohl((u_long)x)
 127 #define NTOHS(x)        (x) = ntohs((u_short)x)
 128 #define HTONL(x)        (x) = htonl((u_long)x)
 129 #define HTONS(x)        (x) = htons((u_short)x)
 130 #endif /* defined(KERNEL) || !defined(_POSIX_C_SOURCE) */
 131 #endif /* __DARWIN_BYTE_ORDER != __DARWIN_BIG_ENDIAN || defined(lint) */
 132 #endif /* !_SYS__ENDIAN_H_ */