mirror of
git://jb55.com/damus
synced 2024-09-19 19:46:51 +00:00
191 lines
8.7 KiB
C
191 lines
8.7 KiB
C
/*
|
|
* Copyright (c) 2016 Mikkel Fahnøe Jørgensen, dvide.com
|
|
*
|
|
* (MIT License)
|
|
* 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 PUNLIGNED_H
|
|
#define PUNLIGNED_H
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
#ifndef PORTABLE_UNALIGNED_ACCESS
|
|
|
|
#if defined(__i386__) || defined(__x86_64__) || defined(_M_IX86) || defined(_M_X64)
|
|
#define PORTABLE_UNALIGNED_ACCESS 1
|
|
#else
|
|
#define PORTABLE_UNALIGNED_ACCESS 0
|
|
#endif
|
|
|
|
#endif
|
|
|
|
/* `unaligned_read_16` might not be defined if endianness was not determined. */
|
|
#if !defined(unaligned_read_le16toh)
|
|
|
|
#include "pendian.h"
|
|
|
|
#ifndef UINT8_MAX
|
|
#include <stdint.h>
|
|
#endif
|
|
|
|
#if PORTABLE_UNALIGNED_ACCESS
|
|
|
|
#define unaligned_read_16(p) (*(uint16_t*)(p))
|
|
#define unaligned_read_32(p) (*(uint32_t*)(p))
|
|
#define unaligned_read_64(p) (*(uint64_t*)(p))
|
|
|
|
#define unaligned_read_le16toh(p) le16toh(*(uint16_t*)(p))
|
|
#define unaligned_read_le32toh(p) le32toh(*(uint32_t*)(p))
|
|
#define unaligned_read_le64toh(p) le64toh(*(uint64_t*)(p))
|
|
|
|
#define unaligned_read_be16toh(p) be16toh(*(uint16_t*)(p))
|
|
#define unaligned_read_be32toh(p) be32toh(*(uint32_t*)(p))
|
|
#define unaligned_read_be64toh(p) be64toh(*(uint64_t*)(p))
|
|
|
|
#define unaligned_write_16(p, v) (*(uint16_t*)(p) = (uint16_t)(v))
|
|
#define unaligned_write_32(p, v) (*(uint32_t*)(p) = (uint32_t)(v))
|
|
#define unaligned_write_64(p, v) (*(uint64_t*)(p) = (uint64_t)(v))
|
|
|
|
#define unaligned_write_htole16(p, v) (*(uint16_t*)(p) = htole16(v))
|
|
#define unaligned_write_htole32(p, v) (*(uint32_t*)(p) = htole32(v))
|
|
#define unaligned_write_htole64(p, v) (*(uint64_t*)(p) = htole64(v))
|
|
|
|
#define unaligned_write_htobe16(p, v) (*(uint16_t*)(p) = htobe16(v))
|
|
#define unaligned_write_htobe32(p, v) (*(uint32_t*)(p) = htobe32(v))
|
|
#define unaligned_write_htobe64(p, v) (*(uint64_t*)(p) = htobe64(v))
|
|
|
|
#else
|
|
|
|
#define unaligned_read_le16toh(p) ( \
|
|
(((uint16_t)(((uint8_t *)(p))[0])) << 0) | \
|
|
(((uint16_t)(((uint8_t *)(p))[1])) << 8))
|
|
|
|
#define unaligned_read_le32toh(p) ( \
|
|
(((uint32_t)(((uint8_t *)(p))[0])) << 0) | \
|
|
(((uint32_t)(((uint8_t *)(p))[1])) << 8) | \
|
|
(((uint32_t)(((uint8_t *)(p))[2])) << 16) | \
|
|
(((uint32_t)(((uint8_t *)(p))[3])) << 24))
|
|
|
|
#define unaligned_read_le64toh(p) ( \
|
|
(((uint64_t)(((uint8_t *)(p))[0])) << 0) | \
|
|
(((uint64_t)(((uint8_t *)(p))[1])) << 8) | \
|
|
(((uint64_t)(((uint8_t *)(p))[2])) << 16) | \
|
|
(((uint64_t)(((uint8_t *)(p))[3])) << 24) | \
|
|
(((uint64_t)(((uint8_t *)(p))[4])) << 32) | \
|
|
(((uint64_t)(((uint8_t *)(p))[5])) << 40) | \
|
|
(((uint64_t)(((uint8_t *)(p))[6])) << 48) | \
|
|
(((uint64_t)(((uint8_t *)(p))[7])) << 56))
|
|
|
|
#define unaligned_read_be16toh(p) ( \
|
|
(((uint16_t)(((uint8_t *)(p))[0])) << 8) | \
|
|
(((uint16_t)(((uint8_t *)(p))[1])) << 0))
|
|
|
|
#define unaligned_read_be32toh(p) ( \
|
|
(((uint32_t)(((uint8_t *)(p))[0])) << 24) | \
|
|
(((uint32_t)(((uint8_t *)(p))[1])) << 16) | \
|
|
(((uint32_t)(((uint8_t *)(p))[2])) << 8) | \
|
|
(((uint32_t)(((uint8_t *)(p))[3])) << 0))
|
|
|
|
#define unaligned_read_be64toh(p) ( \
|
|
(((uint64_t)(((uint8_t *)(p))[0])) << 56) | \
|
|
(((uint64_t)(((uint8_t *)(p))[1])) << 48) | \
|
|
(((uint64_t)(((uint8_t *)(p))[2])) << 40) | \
|
|
(((uint64_t)(((uint8_t *)(p))[3])) << 32) | \
|
|
(((uint64_t)(((uint8_t *)(p))[4])) << 24) | \
|
|
(((uint64_t)(((uint8_t *)(p))[5])) << 16) | \
|
|
(((uint64_t)(((uint8_t *)(p))[6])) << 8) | \
|
|
(((uint64_t)(((uint8_t *)(p))[7])) << 0))
|
|
|
|
#define unaligned_write_htole16(p, v) do { \
|
|
((uint8_t *)(p))[0] = (uint8_t)(((uint16_t)(v)) >> 0); \
|
|
((uint8_t *)(p))[1] = (uint8_t)(((uint16_t)(v)) >> 8); \
|
|
} while (0)
|
|
|
|
#define unaligned_write_htole32(p, v) do { \
|
|
((uint8_t *)(p))[0] = (uint8_t)(((uint32_t)(v)) >> 0); \
|
|
((uint8_t *)(p))[1] = (uint8_t)(((uint32_t)(v)) >> 8); \
|
|
((uint8_t *)(p))[2] = (uint8_t)(((uint32_t)(v)) >> 16); \
|
|
((uint8_t *)(p))[3] = (uint8_t)(((uint32_t)(v)) >> 24); \
|
|
} while (0)
|
|
|
|
#define unaligned_write_htole64(p) do { \
|
|
((uint8_t *)(p))[0] = (uint8_t)(((uint64_t)(v)) >> 0); \
|
|
((uint8_t *)(p))[1] = (uint8_t)(((uint64_t)(v)) >> 8); \
|
|
((uint8_t *)(p))[2] = (uint8_t)(((uint64_t)(v)) >> 16); \
|
|
((uint8_t *)(p))[3] = (uint8_t)(((uint64_t)(v)) >> 24); \
|
|
((uint8_t *)(p))[4] = (uint8_t)(((uint64_t)(v)) >> 32); \
|
|
((uint8_t *)(p))[5] = (uint8_t)(((uint64_t)(v)) >> 40); \
|
|
((uint8_t *)(p))[6] = (uint8_t)(((uint64_t)(v)) >> 48); \
|
|
((uint8_t *)(p))[7] = (uint8_t)(((uint64_t)(v)) >> 56); \
|
|
} while (0)
|
|
|
|
#define unaligned_write_htobe16(p, v) do { \
|
|
((uint8_t *)(p))[0] = (uint8_t)(((uint16_t)(v)) >> 8); \
|
|
((uint8_t *)(p))[1] = (uint8_t)(((uint16_t)(v)) >> 0); \
|
|
} while (0)
|
|
|
|
#define unaligned_write_htobe32(p, v) do { \
|
|
((uint8_t *)(p))[0] = (uint8_t)(((uint32_t)(v)) >> 24); \
|
|
((uint8_t *)(p))[1] = (uint8_t)(((uint32_t)(v)) >> 16); \
|
|
((uint8_t *)(p))[2] = (uint8_t)(((uint32_t)(v)) >> 8); \
|
|
((uint8_t *)(p))[3] = (uint8_t)(((uint32_t)(v)) >> 0); \
|
|
} while (0)
|
|
|
|
#define unaligned_write_htobe64(p) do { \
|
|
((uint8_t *)(p))[0] = (uint8_t)(((uint64_t)(v)) >> 56); \
|
|
((uint8_t *)(p))[1] = (uint8_t)(((uint64_t)(v)) >> 48); \
|
|
((uint8_t *)(p))[2] = (uint8_t)(((uint64_t)(v)) >> 40); \
|
|
((uint8_t *)(p))[3] = (uint8_t)(((uint64_t)(v)) >> 32); \
|
|
((uint8_t *)(p))[4] = (uint8_t)(((uint64_t)(v)) >> 24); \
|
|
((uint8_t *)(p))[5] = (uint8_t)(((uint64_t)(v)) >> 16); \
|
|
((uint8_t *)(p))[6] = (uint8_t)(((uint64_t)(v)) >> 8); \
|
|
((uint8_t *)(p))[7] = (uint8_t)(((uint64_t)(v)) >> 0); \
|
|
} while (0)
|
|
|
|
#if __LITTLE_ENDIAN__
|
|
#define unaligned_read_16(p) unaligned_read_le16toh(p)
|
|
#define unaligned_read_32(p) unaligned_read_le32toh(p)
|
|
#define unaligned_read_64(p) unaligned_read_le64toh(p)
|
|
|
|
#define unaligned_write_16(p) unaligned_write_htole16(p)
|
|
#define unaligned_write_32(p) unaligned_write_htole32(p)
|
|
#define unaligned_write_64(p) unaligned_write_htole64(p)
|
|
#endif
|
|
|
|
#if __BIG_ENDIAN__
|
|
#define unaligned_read_16(p) unaligned_read_be16toh(p)
|
|
#define unaligned_read_32(p) unaligned_read_be32toh(p)
|
|
#define unaligned_read_64(p) unaligned_read_be64toh(p)
|
|
|
|
#define unaligned_write_16(p) unaligned_write_htobe16(p)
|
|
#define unaligned_write_32(p) unaligned_write_htobe32(p)
|
|
#define unaligned_write_64(p) unaligned_write_htobe64(p)
|
|
#endif
|
|
|
|
#endif
|
|
|
|
#endif
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* PUNALIGNED_H */
|