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AP_HAL: utility: import sparse-endian header

This commit is contained in:
Lucas De Marchi 2016-03-07 12:38:40 -03:00
parent 0ed3a93142
commit c5dc54dac7
1 changed files with 88 additions and 0 deletions
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libraries/AP_HAL/utility/sparse-endian.h Normal file
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/* Copyright (c) 2012 Josh Triplett <josh@joshtriplett.org>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#ifndef SPARSE_ENDIAN_H
#define SPARSE_ENDIAN_H
#include <byteswap.h>
#include <endian.h>
#include <stdint.h>
#ifdef __CHECKER__
#define __bitwise __attribute__((bitwise))
#define __force __attribute__((force))
#else
#define __bitwise
#define __force
#endif
typedef uint16_t __bitwise le16_t;
typedef uint16_t __bitwise be16_t;
typedef uint32_t __bitwise le32_t;
typedef uint32_t __bitwise be32_t;
typedef uint64_t __bitwise le64_t;
typedef uint64_t __bitwise be64_t;
#undef htobe16
#undef htole16
#undef be16toh
#undef le16toh
#undef htobe32
#undef htole32
#undef be32toh
#undef le32toh
#undef htobe64
#undef htole64
#undef be64toh
#undef le64toh
#if __BYTE_ORDER == __LITTLE_ENDIAN
#define bswap_16_on_le(x) __bswap_16(x)
#define bswap_32_on_le(x) __bswap_32(x)
#define bswap_64_on_le(x) __bswap_64(x)
#define bswap_16_on_be(x) (x)
#define bswap_32_on_be(x) (x)
#define bswap_64_on_be(x) (x)
#elif __BYTE_ORDER == __BIG_ENDIAN
#define bswap_16_on_le(x) (x)
#define bswap_32_on_le(x) (x)
#define bswap_64_on_le(x) (x)
#define bswap_16_on_be(x) __bswap_16(x)
#define bswap_32_on_be(x) __bswap_32(x)
#define bswap_64_on_be(x) __bswap_64(x)
#endif
static inline le16_t htole16(uint16_t value) { return (le16_t __force) bswap_16_on_be(value); }
static inline le32_t htole32(uint32_t value) { return (le32_t __force) bswap_32_on_be(value); }
static inline le64_t htole64(uint64_t value) { return (le64_t __force) bswap_64_on_be(value); }
static inline be16_t htobe16(uint16_t value) { return (be16_t __force) bswap_16_on_le(value); }
static inline be32_t htobe32(uint32_t value) { return (be32_t __force) bswap_32_on_le(value); }
static inline be64_t htobe64(uint64_t value) { return (be64_t __force) bswap_64_on_le(value); }
static inline uint16_t le16toh(le16_t value) { return bswap_16_on_be((uint16_t __force)value); }
static inline uint32_t le32toh(le32_t value) { return bswap_32_on_be((uint32_t __force)value); }
static inline uint64_t le64toh(le64_t value) { return bswap_64_on_be((uint64_t __force)value); }
static inline uint16_t be16toh(be16_t value) { return bswap_16_on_le((uint16_t __force)value); }
static inline uint32_t be32toh(be32_t value) { return bswap_32_on_le((uint32_t __force)value); }
static inline uint64_t be64toh(be64_t value) { return bswap_64_on_le((uint64_t __force)value); }
#endif /* SPARSE_ENDIAN_H */