150 lines
4.7 KiB
C
150 lines
4.7 KiB
C
/*
|
|
* File: EndianUtilities.h
|
|
*
|
|
* Copyright (c) Freescale Semiconductor, Inc. All rights reserved.
|
|
* See included license file for license details.
|
|
*/
|
|
#if !defined(_EndianUtilities_h_)
|
|
#define _EndianUtilities_h_
|
|
|
|
//! \name Swap macros
|
|
//! These macros always swap the data.
|
|
//@{
|
|
|
|
//! Byte swap 16-bit value.
|
|
#define _BYTESWAP16(value) (((((uint16_t)value) << 8) & 0xFF00) | ((((uint16_t)value) >> 8) & 0x00FF))
|
|
|
|
//! Byte swap 32-bit value.
|
|
#define _BYTESWAP32(value) \
|
|
(((((uint32_t)value) << 24) & 0xFF000000) | ((((uint32_t)value) << 8) & 0x00FF0000) | \
|
|
((((uint32_t)value) >> 8) & 0x0000FF00) | ((((uint32_t)value) >> 24) & 0x000000FF))
|
|
|
|
//! Byte swap 64-bit value.
|
|
#define _BYTESWAP64(value) \
|
|
(((((uint64_t)value) << 56) & 0xFF00000000000000ULL) | ((((uint64_t)value) << 40) & 0x00FF000000000000ULL) | \
|
|
((((uint64_t)value) << 24) & 0x0000FF0000000000ULL) | ((((uint64_t)value) << 8) & 0x000000FF00000000ULL) | \
|
|
((((uint64_t)value) >> 8) & 0x00000000FF000000ULL) | ((((uint64_t)value) >> 24) & 0x0000000000FF0000ULL) | \
|
|
((((uint64_t)value) >> 40) & 0x000000000000FF00ULL) | ((((uint64_t)value) >> 56) & 0x00000000000000FFULL))
|
|
|
|
//@}
|
|
|
|
//! \name Inline swap functions
|
|
//@{
|
|
|
|
inline uint16_t _swap_u16(uint16_t value)
|
|
{
|
|
return _BYTESWAP16(value);
|
|
}
|
|
inline int16_t _swap_s16(int16_t value)
|
|
{
|
|
return (int16_t)_BYTESWAP16((uint16_t)value);
|
|
}
|
|
|
|
inline uint32_t _swap_u32(uint32_t value)
|
|
{
|
|
return _BYTESWAP32(value);
|
|
}
|
|
inline int32_t _swap_s32(int32_t value)
|
|
{
|
|
return (int32_t)_BYTESWAP32((uint32_t)value);
|
|
}
|
|
|
|
inline uint64_t _swap_u64(uint64_t value)
|
|
{
|
|
return _BYTESWAP64(value);
|
|
}
|
|
inline int64_t _swap_s64(int64_t value)
|
|
{
|
|
return (uint64_t)_BYTESWAP64((uint64_t)value);
|
|
}
|
|
|
|
//@}
|
|
|
|
#if defined(__LITTLE_ENDIAN__)
|
|
|
|
/* little endian host */
|
|
|
|
#define ENDIAN_BIG_TO_HOST_U16(value) (_swap_u16(value))
|
|
#define ENDIAN_HOST_TO_BIG_U16(value) (_swap_u16(value))
|
|
|
|
#define ENDIAN_BIG_TO_HOST_S16(value) (_swap_s16(value))
|
|
#define ENDIAN_HOST_TO_BIG_S16(value) (_swap_s16(value))
|
|
|
|
#define ENDIAN_BIG_TO_HOST_U32(value) (_swap_u32(value))
|
|
#define ENDIAN_HOST_TO_BIG_U32(value) (_swap_u32(value))
|
|
|
|
#define ENDIAN_BIG_TO_HOST_S32(value) (_swap_s32(value))
|
|
#define ENDIAN_HOST_TO_BIG_S32(value) (_swap_s32(value))
|
|
|
|
#define ENDIAN_BIG_TO_HOST_U64(value) (_swap_u64(value))
|
|
#define ENDIAN_HOST_TO_BIG_U64(value) (_swap_u64(value))
|
|
|
|
#define ENDIAN_BIG_TO_HOST_S64(value) (_swap_s64(value))
|
|
#define ENDIAN_HOST_TO_BIG_S64(value) (_swap_s64(value))
|
|
|
|
/* no-ops */
|
|
|
|
#define ENDIAN_LITTLE_TO_HOST_U16(value) (value)
|
|
#define ENDIAN_HOST_TO_LITTLE_U16(value) (value)
|
|
|
|
#define ENDIAN_LITTLE_TO_HOST_S16(value) (value)
|
|
#define ENDIAN_HOST_TO_LITTLE_S16(value) (value)
|
|
|
|
#define ENDIAN_LITTLE_TO_HOST_U32(value) (value)
|
|
#define ENDIAN_HOST_TO_LITTLE_U32(value) (value)
|
|
|
|
#define ENDIAN_LITTLE_TO_HOST_S32(value) (value)
|
|
#define ENDIAN_HOST_TO_LITTLE_S32(value) (value)
|
|
|
|
#define ENDIAN_LITTLE_TO_HOST_U64(value) (value)
|
|
#define ENDIAN_HOST_TO_LITTLE_U64(value) (value)
|
|
|
|
#define ENDIAN_LITTLE_TO_HOST_S64(value) (value)
|
|
#define ENDIAN_HOST_TO_LITTLE_S64(value) (value)
|
|
|
|
#elif defined(__BIG_ENDIAN__)
|
|
|
|
/* big endian host */
|
|
|
|
#define ENDIAN_LITTLE_TO_HOST_U16(value) (_swap_u16(value))
|
|
#define ENDIAN_HOST_TO_LITTLE_U16(value) (_swap_u16(value))
|
|
|
|
#define ENDIAN_LITTLE_TO_HOST_S16(value) (_swap_s16(value))
|
|
#define ENDIAN_HOST_TO_LITTLE_S16(value) (_swap_s16(value))
|
|
|
|
#define ENDIAN_LITTLE_TO_HOST_U32(value) (_swap_u32(value))
|
|
#define ENDIAN_HOST_TO_LITTLE_U32(value) (_swap_u32(value))
|
|
|
|
#define ENDIAN_LITTLE_TO_HOST_S32(value) (_swap_s32(value))
|
|
#define ENDIAN_HOST_TO_LITTLE_S32(value) (_swap_s32(value))
|
|
|
|
#define ENDIAN_LITTLE_TO_HOST_U64(value) (_swap_u64(value))
|
|
#define ENDIAN_HOST_TO_LITTLE_U64(value) (_swap_u64(value))
|
|
|
|
#define ENDIAN_LITTLE_TO_HOST_S64(value) (_swap_s64(value))
|
|
#define ENDIAN_HOST_TO_LITTLE_S64(value) (_swap_s64(value))
|
|
|
|
/* no-ops */
|
|
|
|
#define ENDIAN_BIG_TO_HOST_U16(value) (value)
|
|
#define ENDIAN_HOST_TO_BIG_U16(value) (value)
|
|
|
|
#define ENDIAN_BIG_TO_HOST_S16(value) (value)
|
|
#define ENDIAN_HOST_TO_BIG_S16(value) (value)
|
|
|
|
#define ENDIAN_BIG_TO_HOST_U32(value) (value)
|
|
#define ENDIAN_HOST_TO_BIG_U32(value) (value)
|
|
|
|
#define ENDIAN_BIG_TO_HOST_S32(value) (value)
|
|
#define ENDIAN_HOST_TO_BIG_S32(value) (value)
|
|
|
|
#define ENDIAN_BIG_TO_HOST_U64(value) (value)
|
|
#define ENDIAN_HOST_TO_BIG_U64(value) (value)
|
|
|
|
#define ENDIAN_BIG_TO_HOST_S64(value) (value)
|
|
#define ENDIAN_HOST_TO_BIG_S64(value) (value)
|
|
|
|
#endif
|
|
|
|
#endif // _EndianUtilities_h_
|