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/*
* Done by Dietmar Hahn <dietmar.hahn@fujitsu-siemens.com>
* Parts are taken from FreeBSD.
*
****************************************************************************
* 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.
*/
#if !defined(_ENDIAN_H_)
#define _ENDIAN_H_
#include <mini-os/types.h>
#if !defined(__ASSEMBLY__)
#if defined(BIG_ENDIAN)
static __inline uint64_t
__bswap64(uint64_t __x)
{
uint64_t __r;
asm __volatile("mux1 %0=%1,@rev" : "=r" (__r) : "r"(__x));
return __r;
}
static __inline uint32_t
__bswap32(uint32_t __x)
{
return (__bswap64(__x) >> 32);
}
static __inline uint16_t
__bswap16(uint16_t __x)
{
return (__bswap64(__x) >> 48);
}
#define doswap(x,sz) ( \
((sz)==1)? (uint8_t)(x): \
((sz)==2)? __bswap16(x): \
((sz)==4)? __bswap32(x): \
((sz)==8)? __bswap64(x): \
~0l )
#define SWAP(x) doswap((x), sizeof((x)))
#else /* defined(BIG_ENDIAN) */
#define SWAP(x) (x)
#endif /* defined(BIG_ENDIAN) */
#endif /* !defined(__ASSEMBLY__) */
#endif /* !defined(_ENDIAN_H_) */
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