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#ifndef _BITS_BYTESWAP_H
#define _BITS_BYTESWAP_H 1
/* CRIS specific byte swap operations: 16, 32 and 64-bit */
/* Swap bytes in 16 bit value. */
#define __bswap_constant_16(x) \
({ \
unsigned short __x = (x); \
((unsigned short)( \
(((unsigned short)(__x) & (unsigned short)0x00ffu) << 8) | \
(((unsigned short)(__x) & (unsigned short)0xff00u) >> 8) )); \
})
#if defined __GNUC__ && __GNUC__ >= 2
# define __bswap_16(x) \
__extension__ \
({ unsigned short __bswap_16_v; \
if (__builtin_constant_p (x)) \
__bswap_16_v = __bswap_constant_16 (x); \
else \
__asm__ ("swapb %0" : "=r" (__bswap_16_v) : "0" (x)); \
__bswap_16_v; })
#else
# define __bswap_16(x) __bswap_constant_16 (x)
#endif
/* Swap bytes in 32 bit value. */
#define __bswap_constant_32(x) \
({ \
unsigned long __x = (x); \
((unsigned long)( \
(((unsigned long)(__x) & (unsigned long)0x000000fful) << 24) | \
(((unsigned long)(__x) & (unsigned long)0x0000ff00ul) << 8) | \
(((unsigned long)(__x) & (unsigned long)0x00ff0000ul) >> 8) | \
(((unsigned long)(__x) & (unsigned long)0xff000000ul) >> 24) )); \
})
#if defined __GNUC__ && __GNUC__ >= 2
# define __bswap_32(x) \
__extension__ \
({ unsigned long __bswap_32_v; \
if (__builtin_constant_p (x)) \
__bswap_32_v = __bswap_constant_32 (x); \
else \
__asm__ ("swapwb %0" : "=r" (__bswap_32_v) : "0" (x)); \
__bswap_32_v; })
#else
# define __bswap_32(x) __bswap_constant_32 (x)
#endif
/* Swap bytes in 64 bit value. */
# define __bswap_constant_64(x) \
((((x) & 0xff00000000000000ull) >> 56) \
| (((x) & 0x00ff000000000000ull) >> 40) \
| (((x) & 0x0000ff0000000000ull) >> 24) \
| (((x) & 0x000000ff00000000ull) >> 8) \
| (((x) & 0x00000000ff000000ull) << 8) \
| (((x) & 0x0000000000ff0000ull) << 24) \
| (((x) & 0x000000000000ff00ull) << 40) \
| (((x) & 0x00000000000000ffull) << 56))
#if defined __GNUC__ && __GNUC__ >= 2
# define __bswap_64(x) \
(__extension__ \
({ union { __extension__ unsigned long long int __ll; \
unsigned int __l[2]; } __w, __r; \
if (__builtin_constant_p (x)) \
__r.__ll = __bswap_constant_64 (x); \
else \
{ \
__w.__ll = (x); \
__r.__l[0] = __bswap_32 (__w.__l[1]); \
__r.__l[1] = __bswap_32 (__w.__l[0]); \
} \
__r.__ll; }))
#else
# define __bswap_64(x) __bswap_constant_64 (x)
#endif
#endif /* _BITS_BYTESWAP_H */
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