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.
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.
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]
25 * Copyright 2005 Sun Microsystems, Inc. All rights reserved.
26 * Use is subject to license terms.
29 /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
30 /* All Rights Reserved */
33 * University Copyright- Copyright (c) 1982, 1986, 1988
34 * The Regents of the University of California
37 * University Acknowledgment- Portions of this document are derived from
38 * software developed by the University of California, Berkeley, and its
42 #ifndef _OPENSOLARIS_SYS_BYTEORDER_H_
43 #define _OPENSOLARIS_SYS_BYTEORDER_H_
45 #include <sys/endian.h>
48 * Macros to reverse byte order
50 #define BSWAP_8(x) ((x) & 0xff)
51 #define BSWAP_16(x) ((BSWAP_8(x) << 8) | BSWAP_8((x) >> 8))
52 #define BSWAP_32(x) ((BSWAP_16(x) << 16) | BSWAP_16((x) >> 16))
53 #define BSWAP_64(x) ((BSWAP_32(x) << 32) | BSWAP_32((x) >> 32))
55 #define BMASK_8(x) ((x) & 0xff)
56 #define BMASK_16(x) ((x) & 0xffff)
57 #define BMASK_32(x) ((x) & 0xffffffff)
58 #define BMASK_64(x) (x)
61 * Macros to convert from a specific byte order to/from native byte order
63 #if BYTE_ORDER == _BIG_ENDIAN
64 #define BE_8(x) BMASK_8(x)
65 #define BE_16(x) BMASK_16(x)
66 #define BE_32(x) BMASK_32(x)
67 #define BE_64(x) BMASK_64(x)
68 #define LE_8(x) BSWAP_8(x)
69 #define LE_16(x) BSWAP_16(x)
70 #define LE_32(x) BSWAP_32(x)
71 #define LE_64(x) BSWAP_64(x)
73 #define LE_8(x) BMASK_8(x)
74 #define LE_16(x) BMASK_16(x)
75 #define LE_32(x) BMASK_32(x)
76 #define LE_64(x) BMASK_64(x)
77 #define BE_8(x) BSWAP_8(x)
78 #define BE_16(x) BSWAP_16(x)
79 #define BE_32(x) BSWAP_32(x)
80 #define BE_64(x) BSWAP_64(x)
83 #if !defined(_STANDALONE)
84 #if BYTE_ORDER == _BIG_ENDIAN
85 #define htonll(x) BMASK_64(x)
86 #define ntohll(x) BMASK_64(x)
87 #else /* BYTE_ORDER == _LITTLE_ENDIAN */
89 static __inline__ uint64_t
92 return ((((uint64_t)htonl(n)) << 32) + htonl(n >> 32));
95 static __inline__ uint64_t
98 return ((((uint64_t)ntohl(n)) << 32) + ntohl(n >> 32));
100 #else /* !__LP64__ */
101 #define htonll(x) BSWAP_64(x)
102 #define ntohll(x) BSWAP_64(x)
103 #endif /* __LP64__ */
104 #endif /* BYTE_ORDER */
105 #endif /* _STANDALONE */
107 #define BE_IN32(xa) htonl(*((uint32_t *)(void *)(xa)))
109 #endif /* _OPENSOLARIS_SYS_BYTEORDER_H_ */