1 /* Copyright (c) 2012 Josh Triplett <josh@joshtriplett.org>
2 *
3 * Permission is hereby granted, free of charge, to any person obtaining a copy
4 * of this software and associated documentation files (the "Software"), to
5 * deal in the Software without restriction, including without limitation the
6 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
7 * sell copies of the Software, and to permit persons to whom the Software is
8 * furnished to do so, subject to the following conditions:
9 *
10 * The above copyright notice and this permission notice shall be included in
11 * all copies or substantial portions of the Software.
12 *
13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
15 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
16 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
17 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
18 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
19 * IN THE SOFTWARE.
20 */
21
22 #pragma once
23
24 #include <byteswap.h>
25 #include <endian.h>
26 #include <stdint.h>
27
28 #ifdef __CHECKER__
29 #define __bitwise __attribute__((bitwise))
30 #define __force __attribute__((force))
31 #else
32 #define __bitwise
33 #define __force
34 #endif
35
36 typedef uint16_t __bitwise le16_t;
37 typedef uint16_t __bitwise be16_t;
38 typedef uint32_t __bitwise le32_t;
39 typedef uint32_t __bitwise be32_t;
40 typedef uint64_t __bitwise le64_t;
41 typedef uint64_t __bitwise be64_t;
42
43 #undef htobe16
44 #undef htole16
45 #undef be16toh
46 #undef le16toh
47 #undef htobe32
48 #undef htole32
49 #undef be32toh
50 #undef le32toh
51 #undef htobe64
52 #undef htole64
53 #undef be64toh
54 #undef le64toh
55
56 #if __BYTE_ORDER == __LITTLE_ENDIAN
57 #define bswap_16_on_le(x) __bswap_16(x)
58 #define bswap_32_on_le(x) __bswap_32(x)
59 #define bswap_64_on_le(x) __bswap_64(x)
60 #define bswap_16_on_be(x) (x)
61 #define bswap_32_on_be(x) (x)
62 #define bswap_64_on_be(x) (x)
63 #elif __BYTE_ORDER == __BIG_ENDIAN
64 #define bswap_16_on_le(x) (x)
65 #define bswap_32_on_le(x) (x)
66 #define bswap_64_on_le(x) (x)
67 #define bswap_16_on_be(x) __bswap_16(x)
68 #define bswap_32_on_be(x) __bswap_32(x)
69 #define bswap_64_on_be(x) __bswap_64(x)
70 #endif
71
htole16(uint16_t value)72 static inline le16_t htole16(uint16_t value) { return (le16_t __force) bswap_16_on_be(value); }
htole32(uint32_t value)73 static inline le32_t htole32(uint32_t value) { return (le32_t __force) bswap_32_on_be(value); }
htole64(uint64_t value)74 static inline le64_t htole64(uint64_t value) { return (le64_t __force) bswap_64_on_be(value); }
75
htobe16(uint16_t value)76 static inline be16_t htobe16(uint16_t value) { return (be16_t __force) bswap_16_on_le(value); }
htobe32(uint32_t value)77 static inline be32_t htobe32(uint32_t value) { return (be32_t __force) bswap_32_on_le(value); }
htobe64(uint64_t value)78 static inline be64_t htobe64(uint64_t value) { return (be64_t __force) bswap_64_on_le(value); }
79
le16toh(le16_t value)80 static inline uint16_t le16toh(le16_t value) { return bswap_16_on_be((uint16_t __force)value); }
le32toh(le32_t value)81 static inline uint32_t le32toh(le32_t value) { return bswap_32_on_be((uint32_t __force)value); }
le64toh(le64_t value)82 static inline uint64_t le64toh(le64_t value) { return bswap_64_on_be((uint64_t __force)value); }
83
be16toh(be16_t value)84 static inline uint16_t be16toh(be16_t value) { return bswap_16_on_le((uint16_t __force)value); }
be32toh(be32_t value)85 static inline uint32_t be32toh(be32_t value) { return bswap_32_on_le((uint32_t __force)value); }
be64toh(be64_t value)86 static inline uint64_t be64toh(be64_t value) { return bswap_64_on_le((uint64_t __force)value); }
87