1 /*-
2 * Copyright (c) 1997 Niklas Hallqvist. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
14 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
15 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
16 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
17 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
18 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
19 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
20 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23 */
25 #ifndef _SYS_ENDIAN_H_
26 #define _SYS_ENDIAN_H_
28 #include <sys/cdefs.h>
30 #include <stdint.h>
32 #define _LITTLE_ENDIAN 1234
33 #define _BIG_ENDIAN 4321
34 #define _PDP_ENDIAN 3412
35 #define _BYTE_ORDER _LITTLE_ENDIAN
36 #define __LITTLE_ENDIAN_BITFIELD
38 #ifndef __LITTLE_ENDIAN
39 #define __LITTLE_ENDIAN _LITTLE_ENDIAN
40 #endif
41 #ifndef __BIG_ENDIAN
42 #define __BIG_ENDIAN _BIG_ENDIAN
43 #endif
44 #define __BYTE_ORDER _BYTE_ORDER
46 #define __swap16 __builtin_bswap16
47 #define __swap32 __builtin_bswap32
48 #define __swap64 __builtin_bswap64
50 /* glibc compatibility. */
51 __BEGIN_DECLS
52 uint32_t htonl(uint32_t) __pure2;
53 uint16_t htons(uint16_t) __pure2;
54 uint32_t ntohl(uint32_t) __pure2;
55 uint16_t ntohs(uint16_t) __pure2;
56 __END_DECLS
58 #define htonl(x) __swap32(x)
59 #define htons(x) __swap16(x)
60 #define ntohl(x) __swap32(x)
61 #define ntohs(x) __swap16(x)
63 /* Bionic additions */
64 #define htonq(x) __swap64(x)
65 #define ntohq(x) __swap64(x)
67 #if __BSD_VISIBLE
68 #define LITTLE_ENDIAN _LITTLE_ENDIAN
69 #define BIG_ENDIAN _BIG_ENDIAN
70 #define PDP_ENDIAN _PDP_ENDIAN
71 #define BYTE_ORDER _BYTE_ORDER
73 #define NTOHL(x) (x) = ntohl((u_int32_t)(x))
74 #define NTOHS(x) (x) = ntohs((u_int16_t)(x))
75 #define HTONL(x) (x) = htonl((u_int32_t)(x))
76 #define HTONS(x) (x) = htons((u_int16_t)(x))
78 #define swap16 __swap16
79 #define swap32 __swap32
80 #define swap64 __swap64
82 #define htobe16 __swap16
83 #define htobe32 __swap32
84 #define htobe64 __swap64
85 #define betoh16 __swap16
86 #define betoh32 __swap32
87 #define betoh64 __swap64
89 #define htole16(x) (x)
90 #define htole32(x) (x)
91 #define htole64(x) (x)
92 #define letoh16(x) (x)
93 #define letoh32(x) (x)
94 #define letoh64(x) (x)
96 /*
97 * glibc-compatible beXXtoh/leXXtoh synonyms for htobeXX/htoleXX.
98 * The BSDs export both sets of names, bionic historically only
99 * exported the ones above (or on the rhs here), and glibc only
100 * exports these names (on the lhs).
101 */
102 #define be16toh(x) htobe16(x)
103 #define be32toh(x) htobe32(x)
104 #define be64toh(x) htobe64(x)
105 #define le16toh(x) htole16(x)
106 #define le32toh(x) htole32(x)
107 #define le64toh(x) htole64(x)
108 #endif /* __BSD_VISIBLE */
110 #endif /* _SYS_ENDIAN_H_ */