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1.1 root 1: /*
2: * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
3: *
4: * @APPLE_LICENSE_HEADER_START@
5: *
6: * Portions Copyright (c) 1999 Apple Computer, Inc. All Rights
7: * Reserved. This file contains Original Code and/or Modifications of
8: * Original Code as defined in and that are subject to the Apple Public
9: * Source License Version 1.1 (the "License"). You may not use this file
10: * except in compliance with the License. Please obtain a copy of the
11: * License at http://www.apple.com/publicsource and read it before using
12: * this file.
13: *
14: * The Original Code and all software distributed under the License are
15: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
16: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
17: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
18: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
19: * License for the specific language governing rights and limitations
20: * under the License.
21: *
22: * @APPLE_LICENSE_HEADER_END@
23: */
24:
25: /*
26: * Copyright 1995 NeXT Computer, Inc. All rights reserved.
27: */
28: /*
29: * Copyright (c) 1987, 1991, 1993
30: * The Regents of the University of California. All rights reserved.
31: *
32: * Redistribution and use in source and binary forms, with or without
33: * modification, are permitted provided that the following conditions
34: * are met:
35: * 1. Redistributions of source code must retain the above copyright
36: * notice, this list of conditions and the following disclaimer.
37: * 2. Redistributions in binary form must reproduce the above copyright
38: * notice, this list of conditions and the following disclaimer in the
39: * documentation and/or other materials provided with the distribution.
40: * 3. All advertising materials mentioning features or use of this software
41: * must display the following acknowledgement:
42: * This product includes software developed by the University of
43: * California, Berkeley and its contributors.
44: * 4. Neither the name of the University nor the names of its contributors
45: * may be used to endorse or promote products derived from this software
46: * without specific prior written permission.
47: *
48: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
49: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
50: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
51: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
52: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
53: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
54: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
55: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
56: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
57: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
58: * SUCH DAMAGE.
59: *
60: * @(#)endian.h 8.1 (Berkeley) 6/11/93
61: */
62:
63: #ifndef _I386__ENDIAN_H_
64: #define _I386__ENDIAN_H_
65:
66: /*
67: * Define _NOQUAD if the compiler does NOT support 64-bit integers.
68: */
69: /* #define _NOQUAD */
70:
71: /*
72: * Define the order of 32-bit words in 64-bit words.
73: */
74: #define _QUAD_HIGHWORD 1
75: #define _QUAD_LOWWORD 0
76:
77: #if defined(KERNEL) || !defined(_POSIX_SOURCE)
78: /*
79: * Definitions for byte order, according to byte significance from low
80: * address to high.
81: */
82: #define LITTLE_ENDIAN 1234 /* LSB first: i386, vax */
83: #define BIG_ENDIAN 4321 /* MSB first: 68000, ibm, net */
84: #define PDP_ENDIAN 3412 /* LSB first in word, MSW first in long */
85:
86: #define BYTE_ORDER LITTLE_ENDIAN
87:
88: #include <sys/cdefs.h>
89:
90: __BEGIN_DECLS
91: unsigned long htonl __P((unsigned long));
92: unsigned short htons __P((unsigned short));
93: unsigned long ntohl __P((unsigned long));
94: unsigned short ntohs __P((unsigned short));
95: __END_DECLS
96:
97: /*
98: * Macros for network/external number representation conversion.
99: */
100: #if BYTE_ORDER == BIG_ENDIAN && !defined(lint)
101: #define ntohl(x) (x)
102: #define ntohs(x) (x)
103: #define htonl(x) (x)
104: #define htons(x) (x)
105:
106: #define NTOHL(x) (x)
107: #define NTOHS(x) (x)
108: #define HTONL(x) (x)
109: #define HTONS(x) (x)
110:
111: #else
112: #include <machine/byte_order.h>
113:
114: #define ntohl(x) NXSwapBigLongToHost(x)
115: #define ntohs(x) NXSwapBigShortToHost(x)
116: #define htonl(x) NXSwapHostLongToBig(x)
117: #define htons(x) NXSwapHostShortToBig(x)
118:
119: #define NTOHL(x) (x) = ntohl((u_long)x)
120: #define NTOHS(x) (x) = ntohs((u_short)x)
121: #define HTONL(x) (x) = htonl((u_long)x)
122: #define HTONS(x) (x) = htons((u_short)x)
123: #endif
124: #endif /* defined(KERNEL) || !defined(_POSIX_SOURCE) */
125: #endif /* !_I386__ENDIAN_H_ */
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