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1.1 root 1: /*
2: * Copyright (c) 2000 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: * Copyright 1995 NeXT Computer, Inc. All rights reserved.
24: */
25: /*
26: * Copyright (c) 1987, 1991, 1993
27: * The Regents of the University of California. All rights reserved.
28: *
29: * Redistribution and use in source and binary forms, with or without
30: * modification, are permitted provided that the following conditions
31: * are met:
32: * 1. Redistributions of source code must retain the above copyright
33: * notice, this list of conditions and the following disclaimer.
34: * 2. Redistributions in binary form must reproduce the above copyright
35: * notice, this list of conditions and the following disclaimer in the
36: * documentation and/or other materials provided with the distribution.
37: * 3. All advertising materials mentioning features or use of this software
38: * must display the following acknowledgement:
39: * This product includes software developed by the University of
40: * California, Berkeley and its contributors.
41: * 4. Neither the name of the University nor the names of its contributors
42: * may be used to endorse or promote products derived from this software
43: * without specific prior written permission.
44: *
45: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
46: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
47: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
48: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
49: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
50: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
51: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
52: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
53: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
54: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
55: * SUCH DAMAGE.
56: *
57: * @(#)endian.h 8.1 (Berkeley) 6/11/93
58: */
59:
60: #ifndef _I386__ENDIAN_H_
61: #define _I386__ENDIAN_H_
62:
63: /*
64: * Define _NOQUAD if the compiler does NOT support 64-bit integers.
65: */
66: /* #define _NOQUAD */
67:
68: /*
69: * Define the order of 32-bit words in 64-bit words.
70: */
71: #define _QUAD_HIGHWORD 1
72: #define _QUAD_LOWWORD 0
73:
74: #if defined(KERNEL) || !defined(_POSIX_SOURCE)
75: /*
76: * Definitions for byte order, according to byte significance from low
77: * address to high.
78: */
79: #define LITTLE_ENDIAN 1234 /* LSB first: i386, vax */
80: #define BIG_ENDIAN 4321 /* MSB first: 68000, ibm, net */
81: #define PDP_ENDIAN 3412 /* LSB first in word, MSW first in long */
82:
83: #define BYTE_ORDER LITTLE_ENDIAN
84:
85: #include <sys/cdefs.h>
86:
87: __BEGIN_DECLS
88: unsigned long htonl __P((unsigned long));
89: unsigned short htons __P((unsigned short));
90: unsigned long ntohl __P((unsigned long));
91: unsigned short ntohs __P((unsigned short));
92: __END_DECLS
93:
94: /*
95: * Macros for network/external number representation conversion.
96: */
97: #if BYTE_ORDER == BIG_ENDIAN && !defined(lint)
98: #define ntohl(x) (x)
99: #define ntohs(x) (x)
100: #define htonl(x) (x)
101: #define htons(x) (x)
102:
103: #define NTOHL(x) (x)
104: #define NTOHS(x) (x)
105: #define HTONL(x) (x)
106: #define HTONS(x) (x)
107:
108: #else
109: #include <machine/byte_order.h>
110:
111: #define ntohl(x) NXSwapBigLongToHost(x)
112: #define ntohs(x) NXSwapBigShortToHost(x)
113: #define htonl(x) NXSwapHostLongToBig(x)
114: #define htons(x) NXSwapHostShortToBig(x)
115:
116: #define NTOHL(x) (x) = ntohl((u_long)x)
117: #define NTOHS(x) (x) = ntohs((u_short)x)
118: #define HTONL(x) (x) = htonl((u_long)x)
119: #define HTONS(x) (x) = htons((u_short)x)
120: #endif
121: #endif /* defined(KERNEL) || !defined(_POSIX_SOURCE) */
122: #endif /* !_I386__ENDIAN_H_ */
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