1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License").  You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22/*
23 * Copyright (c) 2001 by Sun Microsystems, Inc.
24 * All rights reserved.
25 */
26
27#ifndef	_BYTEORDER_H
28#define	_BYTEORDER_H
29
30#pragma ident	"%Z%%M%	%I%	%E% SMI"
31
32#ifdef	__cplusplus
33extern "C" {
34#endif
35
36#include <sys/types.h>
37
38#define	swap32(x) \
39((uint32_t)((((uint32_t)(x) & 0x000000ff) << 24) | \
40(((uint32_t)(x) & 0x0000ff00) << 8) | \
41(((uint32_t)(x) & 0x00ff0000) >> 8) | \
42(((uint32_t)(x) & 0xff000000) >> 24)))
43
44#define	swap16(x) \
45((uint16_t)((((uint16_t)(x) & 0x00ff) << 8) | \
46(((uint16_t)(x) & 0xff00) >> 8)))
47
48/*
49 * endianess issues
50 */
51#if defined(_BIG_ENDIAN)
52#define	CPU_TO_LE32(x)	swap32(x)
53#define	CPU_TO_LE16(x)	swap16(x)
54#define	CPU_TO_BE32(x)	(x)
55#define	CPU_TO_BE16(x)	(x)
56#else
57#define	CPU_TO_LE32(x)	(x)
58#define	CPU_TO_LE16(x)	(x)
59#define	CPU_TO_BE32(x)	swap32(x)
60#define	CPU_TO_BE16(x)	swap16(x)
61#endif
62
63#define	LE32_TO_CPU(x)	CPU_TO_LE32(x)
64#define	LE16_TO_CPU(x)	CPU_TO_LE16(x)
65#define	BE32_TO_CPU(x)	CPU_TO_BE32(x)
66#define	BE16_TO_CPU(x)	CPU_TO_BE16(x)
67
68#ifdef	__cplusplus
69}
70#endif
71
72#endif /* _BYTEORDER_H */
73