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/*
* 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_
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