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
36typedef uint16_t __bitwise le16_t;
37typedef uint16_t __bitwise be16_t;
38typedef uint32_t __bitwise le32_t;
39typedef uint32_t __bitwise be32_t;
40typedef uint64_t __bitwise le64_t;
41typedef 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
72static inline le16_t htole16(uint16_t value) { return (le16_t __force) bswap_16_on_be(value); }
73static inline le32_t htole32(uint32_t value) { return (le32_t __force) bswap_32_on_be(value); }
74static inline le64_t htole64(uint64_t value) { return (le64_t __force) bswap_64_on_be(value); }
75
76static inline be16_t htobe16(uint16_t value) { return (be16_t __force) bswap_16_on_le(value); }
77static inline be32_t htobe32(uint32_t value) { return (be32_t __force) bswap_32_on_le(value); }
78static inline be64_t htobe64(uint64_t value) { return (be64_t __force) bswap_64_on_le(value); }
79
80static inline uint16_t le16toh(le16_t value) { return bswap_16_on_be((uint16_t __force)value); }
81static inline uint32_t le32toh(le32_t value) { return bswap_32_on_be((uint32_t __force)value); }
82static inline uint64_t le64toh(le64_t value) { return bswap_64_on_be((uint64_t __force)value); }
83
84static inline uint16_t be16toh(be16_t value) { return bswap_16_on_le((uint16_t __force)value); }
85static inline uint32_t be32toh(be32_t value) { return bswap_32_on_le((uint32_t __force)value); }
86static inline uint64_t be64toh(be64_t value) { return bswap_64_on_le((uint64_t __force)value); }
87