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 (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22/*
23 * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26
27/*	Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T	*/
28/*	  All Rights Reserved  	*/
29
30/*
31 * University Copyright- Copyright (c) 1982, 1986, 1988
32 * The Regents of the University of California
33 * All Rights Reserved
34 *
35 * University Acknowledgment- Portions of this document are derived from
36 * software developed by the University of California, Berkeley, and its
37 * contributors.
38 */
39
40#ifndef _OPENSOLARIS_SYS_BYTEORDER_H_
41#define	_OPENSOLARIS_SYS_BYTEORDER_H_
42
43/* for htonl() */
44#ifndef _KERNEL
45#include <netinet/in.h>
46#endif
47
48/*
49 * Macros to reverse byte order
50 */
51#define	BSWAP_8(x)	((x) & 0xff)
52#define	BSWAP_16(x)	((BSWAP_8(x) << 8) | BSWAP_8((x) >> 8))
53#define	BSWAP_32(x)	((BSWAP_16(x) << 16) | BSWAP_16((x) >> 16))
54#define	BSWAP_64(x)	((BSWAP_32(x) << 32) | BSWAP_32((x) >> 32))
55
56#define	BMASK_8(x)	((x) & 0xff)
57#define	BMASK_16(x)	((x) & 0xffff)
58#define	BMASK_32(x)	((x) & 0xffffffff)
59#define	BMASK_64(x)	(x)
60
61/*
62 * Macros to convert from a specific byte order to/from native byte order
63 */
64#if _BYTE_ORDER == _BIG_ENDIAN
65#define	BE_8(x)		BMASK_8(x)
66#define	BE_16(x)	BMASK_16(x)
67#define	BE_32(x)	BMASK_32(x)
68#define	BE_64(x)	BMASK_64(x)
69#define	LE_8(x)		BSWAP_8(x)
70#define	LE_16(x)	BSWAP_16(x)
71#define	LE_32(x)	BSWAP_32(x)
72#define	LE_64(x)	BSWAP_64(x)
73#else
74#define	LE_8(x)		BMASK_8(x)
75#define	LE_16(x)	BMASK_16(x)
76#define	LE_32(x)	BMASK_32(x)
77#define	LE_64(x)	BMASK_64(x)
78#define	BE_8(x)		BSWAP_8(x)
79#define	BE_16(x)	BSWAP_16(x)
80#define	BE_32(x)	BSWAP_32(x)
81#define	BE_64(x)	BSWAP_64(x)
82#endif
83
84#if _BYTE_ORDER == _BIG_ENDIAN
85#define	htonll(x)	BMASK_64(x)
86#define	ntohll(x)	BMASK_64(x)
87#else
88#define	htonll(x)	BSWAP_64(x)
89#define	ntohll(x)	BSWAP_64(x)
90#endif
91
92#define BE_IN32(xa)	htonl(*((uint32_t *)(void *)(xa)))
93
94#endif /* _OPENSOLARIS_SYS_BYTEORDER_H_ */
95