bsd/i386/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  * Copyright 1995 NeXT Computer, Inc. All rights reserved.
  32  */
  33 /*
  34  * Copyright (c) 1987, 1991, 1993
  35  *      The Regents of the University of California.  All rights reserved.
  36  *
  37  * Redistribution and use in source and binary forms, with or without
  38  * modification, are permitted provided that the following conditions
  39  * are met:
  40  * 1. Redistributions of source code must retain the above copyright
  41  *    notice, this list of conditions and the following disclaimer.
  42  * 2. Redistributions in binary form must reproduce the above copyright
  43  *    notice, this list of conditions and the following disclaimer in the
  44  *    documentation and/or other materials provided with the distribution.
  45  * 3. All advertising materials mentioning features or use of this software
  46  *    must display the following acknowledgement:
  47  *      This product includes software developed by the University of
  48  *      California, Berkeley and its contributors.
  49  * 4. Neither the name of the University nor the names of its contributors
  50  *    may be used to endorse or promote products derived from this software
  51  *    without specific prior written permission.
  52  *
  53  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  54  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  55  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  56  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  57  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  58  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  59  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  60  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  61  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  62  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  63  * SUCH DAMAGE.
  64  *
  65  *      @(#)endian.h    8.1 (Berkeley) 6/11/93
  66  */
  67
  68 #ifndef _I386__ENDIAN_H_
  69 #define _I386__ENDIAN_H_
  70
  71 /*
  72  * Define _NOQUAD if the compiler does NOT support 64-bit integers.
  73  */
  74 /* #define _NOQUAD */
  75
  76 /*
  77  * Define the order of 32-bit words in 64-bit words.
  78  */
  79 #define _QUAD_HIGHWORD 1
  80 #define _QUAD_LOWWORD 0
  81
  82 /*
  83  * Definitions for byte order, according to byte significance from low
  84  * address to high.
  85  */
  86 #define __DARWIN_LITTLE_ENDIAN  1234    /* LSB first: i386, vax */
  87 #define __DARWIN_BIG_ENDIAN     4321    /* MSB first: 68000, ibm, net */
  88 #define __DARWIN_PDP_ENDIAN     3412    /* LSB first in word, MSW first in long */
  89
  90 #define __DARWIN_BYTE_ORDER     __DARWIN_LITTLE_ENDIAN
  91
  92 #if     defined(KERNEL) || !defined(_POSIX_C_SOURCE)
  93
  94 #define LITTLE_ENDIAN   __DARWIN_LITTLE_ENDIAN
  95 #define BIG_ENDIAN      __DARWIN_BIG_ENDIAN
  96 #define PDP_ENDIAN      __DARWIN_PDP_ENDIAN
  97
  98 #define BYTE_ORDER      __DARWIN_BYTE_ORDER
  99
 100 #include <sys/_endian.h>
 101
 102 #endif /* defined(KERNEL) || !defined(_POSIX_C_SOURCE) */
 103 #endif /* !_I386__ENDIAN_H_ */