diff options
| -rw-r--r-- | configure.ac | 1 | ||||
| -rw-r--r-- | src/gallium/auxiliary/util/u_math.h | 16 |
2 files changed, 17 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index 4cfdedb1461..b8e3161e116 100644 --- a/configure.ac +++ b/configure.ac @@ -122,6 +122,7 @@ fi dnl Check for compiler builtins AX_GCC_BUILTIN([__builtin_bswap32]) +AX_GCC_BUILTIN([__builtin_bswap64]) AM_CONDITIONAL([GEN_ASM_OFFSETS], test "x$GEN_ASM_OFFSETS" = xyes) diff --git a/src/gallium/auxiliary/util/u_math.h b/src/gallium/auxiliary/util/u_math.h index b0f0e3dbb8e..0f498bc1531 100644 --- a/src/gallium/auxiliary/util/u_math.h +++ b/src/gallium/auxiliary/util/u_math.h @@ -717,9 +717,11 @@ util_bitcount(unsigned n) */ #ifdef PIPE_ARCH_BIG_ENDIAN +#define util_le64_to_cpu(x) util_bswap64(x) #define util_le32_to_cpu(x) util_bswap32(x) #define util_le16_to_cpu(x) util_bswap16(x) #else +#define util_le64_to_cpu(x) (x) #define util_le32_to_cpu(x) (x) #define util_le16_to_cpu(x) (x) #endif @@ -742,6 +744,20 @@ util_bswap32(uint32_t n) #endif } +/** + * Reverse byte order of a 64bit word. + */ +static INLINE uint64_t +util_bswap64(uint64_t n) +{ +#if defined(HAVE___BUILTIN_BSWAP64) + return __builtin_bswap64(n); +#else + return ((uint64_t)util_bswap32(n) << 32) | + util_bswap32((n >> 32)); +#endif +} + /** * Reverse byte order of a 16 bit word. |