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- #ifndef _BITS_BYTESWAP_H
- #define _BITS_BYTESWAP_H 1
- #define ___swab16(x) \
- ({ \
- unsigned short __x = (x); \
- ((unsigned short)( \
- (((unsigned short)(__x) & (unsigned short)0x00ffU) << 8) | \
- (((unsigned short)(__x) & (unsigned short)0xff00U) >> 8) )); \
- })
- #define ___swab32(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) )); \
- })
- /* these are CRIS specific */
- static inline unsigned short __fswab16(unsigned short x)
- {
- __asm__ ("swapb %0" : "=r" (x) : "0" (x));
-
- return(x);
- }
- static inline unsigned long __fswab32(unsigned long x)
- {
- __asm__ ("swapwb %0" : "=r" (x) : "0" (x));
-
- return(x);
- }
- # define __bswap_16(x) \
- (__builtin_constant_p((unsigned short)(x)) ? \
- ___swab16((x)) : \
- __fswab16((x)))
- # define __bswap_32(x) \
- (__builtin_constant_p((unsigned long)(x)) ? \
- ___swab32((x)) : \
- __fswab32((x)))
- #endif /* _BITS_BYTESWAP_H */
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