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 https://opensource.org/licenses/CDDL-1.0.
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 * $FreeBSD$
22 */
23
24 /*
25 * Copyright 2005 Sun Microsystems, Inc. All rights reserved.
26 * Use is subject to license terms.
27 */
28
29 /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
30 /* All Rights Reserved */
31
32 /*
33 * University Copyright- Copyright (c) 1982, 1986, 1988
34 * The Regents of the University of California
35 * All Rights Reserved
36 *
37 * University Acknowledgment- Portions of this document are derived from
38 * software developed by the University of California, Berkeley, and its
39 * contributors.
40 */
41
42 #ifndef _OPENSOLARIS_SYS_BYTEORDER_H_
43 #define _OPENSOLARIS_SYS_BYTEORDER_H_
44
45 #include <sys/endian.h>
46
47 #ifdef __COVERITY__
48 /*
49 * Coverity's taint warnings from byteswapping are false positives for us.
50 * Suppress them by hiding byteswapping from Coverity.
51 */
52 #define BSWAP_8(x) ((x) & 0xff)
53 #define BSWAP_16(x) ((x) & 0xffff)
54 #define BSWAP_32(x) ((x) & 0xffffffff)
55 #define BSWAP_64(x) (x)
56
57 #else /* __COVERITY__ */
58
59 /*
60 * Macros to reverse byte order
61 */
62 #define BSWAP_8(x) ((x) & 0xff)
63 #define BSWAP_16(x) ((BSWAP_8(x) << 8) | BSWAP_8((x) >> 8))
64 #define BSWAP_32(x) ((BSWAP_16(x) << 16) | BSWAP_16((x) >> 16))
65 #define BSWAP_64(x) ((BSWAP_32(x) << 32) | BSWAP_32((x) >> 32))
66
67 #endif /* __COVERITY__ */
68
69 #define BMASK_8(x) ((x) & 0xff)
70 #define BMASK_16(x) ((x) & 0xffff)
71 #define BMASK_32(x) ((x) & 0xffffffff)
72 #define BMASK_64(x) (x)
73
74 /*
75 * Macros to convert from a specific byte order to/from native byte order
76 */
77 #if BYTE_ORDER == _BIG_ENDIAN
78 #define BE_8(x) BMASK_8(x)
79 #define BE_16(x) BMASK_16(x)
80 #define BE_32(x) BMASK_32(x)
81 #define BE_64(x) BMASK_64(x)
82 #define LE_8(x) BSWAP_8(x)
83 #define LE_16(x) BSWAP_16(x)
84 #define LE_32(x) BSWAP_32(x)
85 #define LE_64(x) BSWAP_64(x)
86 #else
87 #define LE_8(x) BMASK_8(x)
88 #define LE_16(x) BMASK_16(x)
89 #define LE_32(x) BMASK_32(x)
90 #define LE_64(x) BMASK_64(x)
91 #define BE_8(x) BSWAP_8(x)
92 #define BE_16(x) BSWAP_16(x)
93 #define BE_32(x) BSWAP_32(x)
94 #define BE_64(x) BSWAP_64(x)
95 #endif
96
97 #if !defined(_STANDALONE)
98 #if BYTE_ORDER == _BIG_ENDIAN
99 #define htonll(x) BMASK_64(x)
100 #define ntohll(x) BMASK_64(x)
101 #else /* BYTE_ORDER == _LITTLE_ENDIAN */
102 #ifndef __LP64__
103 static __inline__ uint64_t
htonll(uint64_t n)104 htonll(uint64_t n)
105 {
106 return ((((uint64_t)htonl(n)) << 32) + htonl(n >> 32));
107 }
108
109 static __inline__ uint64_t
ntohll(uint64_t n)110 ntohll(uint64_t n)
111 {
112 return ((((uint64_t)ntohl(n)) << 32) + ntohl(n >> 32));
113 }
114 #else /* !__LP64__ */
115 #define htonll(x) BSWAP_64(x)
116 #define ntohll(x) BSWAP_64(x)
117 #endif /* __LP64__ */
118 #endif /* BYTE_ORDER */
119 #endif /* _STANDALONE */
120
121 #define BE_IN32(xa) htonl(*((uint32_t *)(void *)(xa)))
122
123 #endif /* _OPENSOLARIS_SYS_BYTEORDER_H_ */
124