bsd/ppc/endian.h

   1 /*
   2  * Copyright (c) 1995 NeXT Computer, Inc. All rights reserved.
   3  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   4  *
   5  * @APPLE_LICENSE_HEADER_START@
   6  *
   7  * The contents of this file constitute Original Code as defined in and
   8  * are subject to the Apple Public Source License Version 1.1 (the
   9  * "License").  You may not use this file except in compliance with the
  10  * License.  Please obtain a copy of the License at
  11  * http://www.apple.com/publicsource and read it before using this file.
  12  *
  13  * This Original Code and all software distributed under the License are
  14  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  18  * License for the specific language governing rights and limitations
  19  * under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23 /*
  24  * Copyright (c) 1987, 1991, 1993
  25  *      The Regents of the University of California.  All rights reserved.
  26  *
  27  * Redistribution and use in source and binary forms, with or without
  28  * modification, are permitted provided that the following conditions
  29  * are met:
  30  * 1. Redistributions of source code must retain the above copyright
  31  *    notice, this list of conditions and the following disclaimer.
  32  * 2. Redistributions in binary form must reproduce the above copyright
  33  *    notice, this list of conditions and the following disclaimer in the
  34  *    documentation and/or other materials provided with the distribution.
  35  * 3. All advertising materials mentioning features or use of this software
  36  *    must display the following acknowledgement:
  37  *      This product includes software developed by the University of
  38  *      California, Berkeley and its contributors.
  39  * 4. Neither the name of the University nor the names of its contributors
  40  *    may be used to endorse or promote products derived from this software
  41  *    without specific prior written permission.
  42  *
  43  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  44  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  45  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  46  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  47  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  48  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  49  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  50  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  51  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  52  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  53  * SUCH DAMAGE.
  54  *
  55  *      @(#)endian.h    8.1 (Berkeley) 6/10/93
  56  */
  57
  58 #ifndef _PPC_ENDIAN_H_
  59 #define _PPC_ENDIAN_H_
  60
  61 /*
  62  * Define the order of 32-bit words in 64-bit words.
  63  */
  64 #define _QUAD_HIGHWORD 0
  65 #define _QUAD_LOWWORD 1
  66
  67 #if     defined(KERNEL) || !defined(_POSIX_SOURCE)
  68 /*
  69  * Definitions for byte order, according to byte significance from low
  70  * address to high.
  71  */
  72 #define LITTLE_ENDIAN   1234    /* LSB first: i386, vax */
  73 #define BIG_ENDIAN      4321    /* MSB first: 68000, ibm, net, ppc */
  74 #define PDP_ENDIAN      3412    /* LSB first in word, MSW first in long */
  75
  76 #define BYTE_ORDER      BIG_ENDIAN
  77
  78 #include <sys/cdefs.h>
  79
  80 #ifndef __ASSEMBLER__
  81 __BEGIN_DECLS
  82 unsigned long   htonl __P((unsigned long));
  83 unsigned short  htons __P((unsigned short));
  84 unsigned long   ntohl __P((unsigned long));
  85 unsigned short  ntohs __P((unsigned short));
  86 __END_DECLS
  87 #endif /* __ASSEMBLER__ */
  88
  89 /*
  90  * Macros for network/external number representation conversion.
  91  */
  92 #if BYTE_ORDER == BIG_ENDIAN && !defined(lint)
  93 #define ntohl(x)        (x)
  94 #define ntohs(x)        (x)
  95 #define htonl(x)        (x)
  96 #define htons(x)        (x)
  97
  98 #define NTOHL(x)        (x)
  99 #define NTOHS(x)        (x)
 100 #define HTONL(x)        (x)
 101 #define HTONS(x)        (x)
 102
 103 #else
 104
 105 #include <machine/byte_order.h>
 106
 107 #define ntohl(x)        NXSwapBigLongToHost(x)
 108 #define ntohs(x)        NXSwapBigShortToHost(x)
 109 #define htonl(x)        NXSwapHostLongToBig(x)
 110 #define htons(x)        NXSwapHostShortToBig(x)
 111
 112 #define NTOHL(x)        (x) = ntohl((u_long)x)
 113 #define NTOHS(x)        (x) = ntohs((u_short)x)
 114 #define HTONL(x)        (x) = htonl((u_long)x)
 115 #define HTONS(x)        (x) = htons((u_short)x)
 116 #endif
 117 #endif /* defined(KERNEL) || !defined(_POSIX_SOURCE) */
 118 #endif /* !_PPC_ENDIAN_H_ */