85 lines
1.9 KiB
C
85 lines
1.9 KiB
C
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#ifndef BSWAP_H
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#define BSWAP_H
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#include "config-host.h"
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#include <inttypes.h>
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#ifdef HAVE_BYTESWAP_H
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#include <byteswap.h>
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#else
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#define bswap_16(x) \
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({ \
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uint16_t __x = (x); \
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((uint16_t)( \
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(((uint16_t)(__x) & (uint16_t)0x00ffU) << 8) | \
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(((uint16_t)(__x) & (uint16_t)0xff00U) >> 8) )); \
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})
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#define bswap_32(x) \
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({ \
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uint32_t __x = (x); \
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((uint32_t)( \
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(((uint32_t)(__x) & (uint32_t)0x000000ffUL) << 24) | \
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(((uint32_t)(__x) & (uint32_t)0x0000ff00UL) << 8) | \
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(((uint32_t)(__x) & (uint32_t)0x00ff0000UL) >> 8) | \
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(((uint32_t)(__x) & (uint32_t)0xff000000UL) >> 24) )); \
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})
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#define bswap_64(x) \
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({ \
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uint64_t __x = (x); \
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((uint64_t)( \
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(uint64_t)(((uint64_t)(__x) & (uint64_t)0x00000000000000ffULL) << 56) | \
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(uint64_t)(((uint64_t)(__x) & (uint64_t)0x000000000000ff00ULL) << 40) | \
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(uint64_t)(((uint64_t)(__x) & (uint64_t)0x0000000000ff0000ULL) << 24) | \
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(uint64_t)(((uint64_t)(__x) & (uint64_t)0x00000000ff000000ULL) << 8) | \
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(uint64_t)(((uint64_t)(__x) & (uint64_t)0x000000ff00000000ULL) >> 8) | \
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(uint64_t)(((uint64_t)(__x) & (uint64_t)0x0000ff0000000000ULL) >> 24) | \
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(uint64_t)(((uint64_t)(__x) & (uint64_t)0x00ff000000000000ULL) >> 40) | \
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(uint64_t)(((uint64_t)(__x) & (uint64_t)0xff00000000000000ULL) >> 56) )); \
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})
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#endif /* !HAVE_BYTESWAP_H */
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#if defined(__alpha__) || defined (__ia64__)
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#define HOST_LONG_BITS 64
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#else
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#define HOST_LONG_BITS 32
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#endif
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#define HOST_LONG_SIZE (HOST_LONG_BITS / 8)
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static inline uint16_t bswap16(uint16_t x)
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{
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return bswap_16(x);
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}
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static inline uint32_t bswap32(uint32_t x)
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{
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return bswap_32(x);
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}
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static inline uint64_t bswap64(uint64_t x)
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{
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return bswap_64(x);
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}
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static inline void bswap16s(uint16_t *s)
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{
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*s = bswap16(*s);
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}
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static inline void bswap32s(uint32_t *s)
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{
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*s = bswap32(*s);
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}
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static inline void bswap64s(uint64_t *s)
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{
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*s = bswap64(*s);
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}
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#endif /* BSWAP_H */
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