[thirdparty/systemd.git] / src / basic / sparse-endian.h

/* SPDX-License-Identifier: MIT
 *
 * 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.
 */
#pragma once

#include <byteswap.h>
#include <endian.h>

#include "forward.h"

#ifdef __CHECKER__
#define __sd_bitwise __attribute__((__bitwise__))
#define __sd_force __attribute__((__force__))
#else
#define __sd_bitwise
#define __sd_force
#endif

typedef uint16_t __sd_bitwise le16_t;
typedef uint16_t __sd_bitwise be16_t;
typedef uint32_t __sd_bitwise le32_t;
typedef uint32_t __sd_bitwise be32_t;
typedef uint64_t __sd_bitwise le64_t;
typedef uint64_t __sd_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 __sd_force) bswap_16_on_be(value); }
static inline le32_t htole32(uint32_t value) { return (le32_t __sd_force) bswap_32_on_be(value); }
static inline le64_t htole64(uint64_t value) { return (le64_t __sd_force) bswap_64_on_be(value); }

static inline be16_t htobe16(uint16_t value) { return (be16_t __sd_force) bswap_16_on_le(value); }
static inline be32_t htobe32(uint32_t value) { return (be32_t __sd_force) bswap_32_on_le(value); }
static inline be64_t htobe64(uint64_t value) { return (be64_t __sd_force) bswap_64_on_le(value); }

static inline uint16_t le16toh(le16_t value) { return bswap_16_on_be((uint16_t __sd_force)value); }
static inline uint32_t le32toh(le32_t value) { return bswap_32_on_be((uint32_t __sd_force)value); }
static inline uint64_t le64toh(le64_t value) { return bswap_64_on_be((uint64_t __sd_force)value); }

static inline uint16_t be16toh(be16_t value) { return bswap_16_on_le((uint16_t __sd_force)value); }
static inline uint32_t be32toh(be32_t value) { return bswap_32_on_le((uint32_t __sd_force)value); }
static inline uint64_t be64toh(be64_t value) { return bswap_64_on_le((uint64_t __sd_force)value); }

#undef __sd_bitwise
#undef __sd_force
Commit	Line	Data
	1	/* SPDX-License-Identifier: MIT
	2	*
	3	* Copyright (c) 2012 Josh Triplett <josh@joshtriplett.org>
	4	*
	5	* Permission is hereby granted, free of charge, to any person obtaining a copy
	6	* of this software and associated documentation files (the "Software"), to
	7	* deal in the Software without restriction, including without limitation the
	8	* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
	9	* sell copies of the Software, and to permit persons to whom the Software is
	10	* furnished to do so, subject to the following conditions:
	11	*
	12	* The above copyright notice and this permission notice shall be included in
	13	* all copies or substantial portions of the Software.
	14	*
	15	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	16	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	17	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
	18	* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	19	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
	20	* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
	21	* IN THE SOFTWARE.
	22	*/
	23	#pragma once
	24
	25	#include <byteswap.h>
	26	#include <endian.h>
	27
	28	#include "forward.h"
	29
	30	#ifdef __CHECKER__
	31	#define __sd_bitwise __attribute__((__bitwise__))
	32	#define __sd_force __attribute__((__force__))
	33	#else
	34	#define __sd_bitwise
	35	#define __sd_force
	36	#endif
	37
	38	typedef uint16_t __sd_bitwise le16_t;
	39	typedef uint16_t __sd_bitwise be16_t;
	40	typedef uint32_t __sd_bitwise le32_t;
	41	typedef uint32_t __sd_bitwise be32_t;
	42	typedef uint64_t __sd_bitwise le64_t;
	43	typedef uint64_t __sd_bitwise be64_t;
	44
	45	#undef htobe16
	46	#undef htole16
	47	#undef be16toh
	48	#undef le16toh
	49	#undef htobe32
	50	#undef htole32
	51	#undef be32toh
	52	#undef le32toh
	53	#undef htobe64
	54	#undef htole64
	55	#undef be64toh
	56	#undef le64toh
	57
	58	#if __BYTE_ORDER == __LITTLE_ENDIAN
	59	#define bswap_16_on_le(x) bswap_16(x)
	60	#define bswap_32_on_le(x) bswap_32(x)
	61	#define bswap_64_on_le(x) bswap_64(x)
	62	#define bswap_16_on_be(x) (x)
	63	#define bswap_32_on_be(x) (x)
	64	#define bswap_64_on_be(x) (x)
	65	#elif __BYTE_ORDER == __BIG_ENDIAN
	66	#define bswap_16_on_le(x) (x)
	67	#define bswap_32_on_le(x) (x)
	68	#define bswap_64_on_le(x) (x)
	69	#define bswap_16_on_be(x) bswap_16(x)
	70	#define bswap_32_on_be(x) bswap_32(x)
	71	#define bswap_64_on_be(x) bswap_64(x)
	72	#endif
	73
	74	static inline le16_t htole16(uint16_t value) { return (le16_t __sd_force) bswap_16_on_be(value); }
	75	static inline le32_t htole32(uint32_t value) { return (le32_t __sd_force) bswap_32_on_be(value); }
	76	static inline le64_t htole64(uint64_t value) { return (le64_t __sd_force) bswap_64_on_be(value); }
	77
	78	static inline be16_t htobe16(uint16_t value) { return (be16_t __sd_force) bswap_16_on_le(value); }
	79	static inline be32_t htobe32(uint32_t value) { return (be32_t __sd_force) bswap_32_on_le(value); }
	80	static inline be64_t htobe64(uint64_t value) { return (be64_t __sd_force) bswap_64_on_le(value); }
	81
	82	static inline uint16_t le16toh(le16_t value) { return bswap_16_on_be((uint16_t __sd_force)value); }
	83	static inline uint32_t le32toh(le32_t value) { return bswap_32_on_be((uint32_t __sd_force)value); }
	84	static inline uint64_t le64toh(le64_t value) { return bswap_64_on_be((uint64_t __sd_force)value); }
	85
	86	static inline uint16_t be16toh(be16_t value) { return bswap_16_on_le((uint16_t __sd_force)value); }
	87	static inline uint32_t be32toh(be32_t value) { return bswap_32_on_le((uint32_t __sd_force)value); }
	88	static inline uint64_t be64toh(be64_t value) { return bswap_64_on_le((uint64_t __sd_force)value); }
	89
	90	#undef __sd_bitwise
	91	#undef __sd_force