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loadstore.h
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/*
* Written in 2013 by Gregor Pintar <[email protected]>
*
* To the extent possible under law, the author(s) have dedicated
* all copyright and related and neighboring rights to this software
* to the public domain worldwide.
*
* This software is distributed without any warranty.
*
* You should have received a copy of the CC0 Public Domain Dedication.
* If not, see <http://creativecommons.org/publicdomain/zero/1.0/>.
*/
#ifndef LOADSTORE_H
#define LOADSTORE_H
#if defined(KRIPTO_LITTLE_ENDIAN) || defined(KRIPTO_BIG_ENDIAN)
#include <string.h>
#endif
#include "cast.h"
static inline uint16_t LOAD16L(const void *src)
{
#ifdef KRIPTO_LITTLE_ENDIAN
uint16_t t;
memcpy(&t, src, 2);
return t;
#else
return (uint16_t)CU8(src)[0]
| ((uint16_t)CU8(src)[1] << 8);
#endif
}
static inline uint16_t LOAD16B(const void *src)
{
#ifdef KRIPTO_BIG_ENDIAN
uint16_t t;
memcpy(&t, src, 2);
return t;
#else
return (uint16_t)CU8(src)[1]
| ((uint16_t)CU8(src)[0] << 8);
#endif
}
static inline void STORE16L(const uint16_t src, void *dst)
{
#ifdef KRIPTO_LITTLE_ENDIAN
memcpy(dst, &src, 2);
#else
U8(dst)[0] = (const uint8_t)(src);
U8(dst)[1] = (const uint8_t)(src >> 8);
#endif
}
static inline void STORE16B(const uint16_t src, void *dst)
{
#ifdef KRIPTO_BIG_ENDIAN
memcpy(dst, &src, 2);
#else
U8(dst)[1] = (const uint8_t)(src);
U8(dst)[0] = (const uint8_t)(src >> 8);
#endif
}
static inline uint32_t LOAD32L(const void *src)
{
#ifdef KRIPTO_LITTLE_ENDIAN
uint32_t t;
memcpy(&t, src, 4);
return t;
#else
return (uint32_t)CU8(src)[0]
| ((uint32_t)CU8(src)[1] << 8)
| ((uint32_t)CU8(src)[2] << 16)
| ((uint32_t)CU8(src)[3] << 24);
#endif
}
static inline uint32_t LOAD32B(const void *src)
{
#ifdef KRIPTO_BIG_ENDIAN
uint32_t t;
memcpy(&t, src, 4);
return t;
#else
return (uint32_t)CU8(src)[3]
| ((uint32_t)CU8(src)[2] << 8)
| ((uint32_t)CU8(src)[1] << 16)
| ((uint32_t)CU8(src)[0] << 24);
#endif
}
static inline void STORE32L(const uint32_t src, void *dst)
{
#ifdef KRIPTO_LITTLE_ENDIAN
memcpy(dst, &src, 4);
#else
U8(dst)[0] = (const uint8_t)(src);
U8(dst)[1] = (const uint8_t)(src >> 8);
U8(dst)[2] = (const uint8_t)(src >> 16);
U8(dst)[3] = (const uint8_t)(src >> 24);
#endif
}
static inline void STORE32B(const uint32_t src, void *dst)
{
#ifdef KRIPTO_BIG_ENDIAN
memcpy(dst, &src, 4);
#else
U8(dst)[3] = (const uint8_t)(src);
U8(dst)[2] = (const uint8_t)(src >> 8);
U8(dst)[1] = (const uint8_t)(src >> 16);
U8(dst)[0] = (const uint8_t)(src >> 24);
#endif
}
static inline uint64_t LOAD64L(const void *src)
{
#ifdef KRIPTO_LITTLE_ENDIAN
uint64_t t;
memcpy(&t, src, 8);
return t;
#else
return (uint64_t)CU8(src)[0]
| ((uint64_t)CU8(src)[1] << 8)
| ((uint64_t)CU8(src)[2] << 16)
| ((uint64_t)CU8(src)[3] << 24)
| ((uint64_t)CU8(src)[4] << 32)
| ((uint64_t)CU8(src)[5] << 40)
| ((uint64_t)CU8(src)[6] << 48)
| ((uint64_t)CU8(src)[7] << 56);
#endif
}
static inline uint64_t LOAD64B(const void *src)
{
#ifdef KRIPTO_BIG_ENDIAN
uint64_t t;
memcpy(&t, src, 8);
return t;
#else
return (uint64_t)CU8(src)[7]
| ((uint64_t)CU8(src)[6] << 8)
| ((uint64_t)CU8(src)[5] << 16)
| ((uint64_t)CU8(src)[4] << 24)
| ((uint64_t)CU8(src)[3] << 32)
| ((uint64_t)CU8(src)[2] << 40)
| ((uint64_t)CU8(src)[1] << 48)
| ((uint64_t)CU8(src)[0] << 56);
#endif
}
static inline void STORE64L(const uint64_t src, void *dst)
{
#ifdef KRIPTO_LITTLE_ENDIAN
memcpy(dst, &src, 8);
#else
U8(dst)[0] = (const uint8_t)(src);
U8(dst)[1] = (const uint8_t)(src >> 8);
U8(dst)[2] = (const uint8_t)(src >> 16);
U8(dst)[3] = (const uint8_t)(src >> 24);
U8(dst)[4] = (const uint8_t)(src >> 32);
U8(dst)[5] = (const uint8_t)(src >> 40);
U8(dst)[6] = (const uint8_t)(src >> 48);
U8(dst)[7] = (const uint8_t)(src >> 56);
#endif
}
static inline void STORE64B(const uint64_t src, void *dst)
{
#ifdef KRIPTO_BIG_ENDIAN
memcpy(dst, &src, 8);
#else
U8(dst)[7] = (const uint8_t)(src);
U8(dst)[6] = (const uint8_t)(src >> 8);
U8(dst)[5] = (const uint8_t)(src >> 16);
U8(dst)[4] = (const uint8_t)(src >> 24);
U8(dst)[3] = (const uint8_t)(src >> 32);
U8(dst)[2] = (const uint8_t)(src >> 40);
U8(dst)[1] = (const uint8_t)(src >> 48);
U8(dst)[0] = (const uint8_t)(src >> 56);
#endif
}
#endif