diff options
Diffstat (limited to 'include/qemu/bswap.h')
| -rw-r--r-- | include/qemu/bswap.h | 83 |
1 files changed, 15 insertions, 68 deletions
diff --git a/include/qemu/bswap.h b/include/qemu/bswap.h index 346d05f2aa..3cbe52246b 100644 --- a/include/qemu/bswap.h +++ b/include/qemu/bswap.h @@ -1,97 +1,44 @@ #ifndef BSWAP_H #define BSWAP_H -#ifdef CONFIG_MACHINE_BSWAP_H -# include <sys/endian.h> -# include <machine/bswap.h> -#elif defined(__FreeBSD__) -# include <sys/endian.h> -#elif defined(__HAIKU__) -# include <endian.h> -#elif defined(CONFIG_BYTESWAP_H) -# include <byteswap.h> -#define BSWAP_FROM_BYTESWAP -# else -#define BSWAP_FROM_FALLBACKS -#endif /* ! CONFIG_MACHINE_BSWAP_H */ - #ifdef __cplusplus extern "C" { #endif -#ifdef BSWAP_FROM_BYTESWAP -static inline uint16_t bswap16(uint16_t x) -{ - return bswap_16(x); -} - -static inline uint32_t bswap32(uint32_t x) -{ - return bswap_32(x); -} - -static inline uint64_t bswap64(uint64_t x) -{ - return bswap_64(x); -} -#endif - -#ifdef BSWAP_FROM_FALLBACKS -static inline uint16_t bswap16(uint16_t x) -{ - return (((x & 0x00ff) << 8) | - ((x & 0xff00) >> 8)); -} - -static inline uint32_t bswap32(uint32_t x) -{ - return (((x & 0x000000ffU) << 24) | - ((x & 0x0000ff00U) << 8) | - ((x & 0x00ff0000U) >> 8) | - ((x & 0xff000000U) >> 24)); -} - -static inline uint64_t bswap64(uint64_t x) -{ - return (((x & 0x00000000000000ffULL) << 56) | - ((x & 0x000000000000ff00ULL) << 40) | - ((x & 0x0000000000ff0000ULL) << 24) | - ((x & 0x00000000ff000000ULL) << 8) | - ((x & 0x000000ff00000000ULL) >> 8) | - ((x & 0x0000ff0000000000ULL) >> 24) | - ((x & 0x00ff000000000000ULL) >> 40) | - ((x & 0xff00000000000000ULL) >> 56)); -} -#endif - -#undef BSWAP_FROM_BYTESWAP -#undef BSWAP_FROM_FALLBACKS +#undef bswap16 +#define bswap16(_x) __builtin_bswap16(_x) +#undef bswap32 +#define bswap32(_x) __builtin_bswap32(_x) +#undef bswap64 +#define bswap64(_x) __builtin_bswap64(_x) static inline void bswap16s(uint16_t *s) { - *s = bswap16(*s); + *s = __builtin_bswap16(*s); } static inline void bswap32s(uint32_t *s) { - *s = bswap32(*s); + *s = __builtin_bswap32(*s); } static inline void bswap64s(uint64_t *s) { - *s = bswap64(*s); + *s = __builtin_bswap64(*s); } #if HOST_BIG_ENDIAN #define be_bswap(v, size) (v) -#define le_bswap(v, size) glue(bswap, size)(v) +#define le_bswap(v, size) glue(__builtin_bswap, size)(v) #define be_bswaps(v, size) -#define le_bswaps(p, size) do { *p = glue(bswap, size)(*p); } while(0) +#define le_bswaps(p, size) \ + do { *p = glue(__builtin_bswap, size)(*p); } while (0) #else #define le_bswap(v, size) (v) -#define be_bswap(v, size) glue(bswap, size)(v) +#define be_bswap(v, size) glue(__builtin_bswap, size)(v) #define le_bswaps(v, size) -#define be_bswaps(p, size) do { *p = glue(bswap, size)(*p); } while(0) +#define be_bswaps(p, size) \ + do { *p = glue(__builtin_bswap, size)(*p); } while (0) #endif /** |