From 9ea33e9318cfec6fca403b663618cbfbfa9e1e96 Mon Sep 17 00:00:00 2001 From: Stefan Reinauer Date: Fri, 14 Oct 2011 15:11:16 -0700 Subject: Add macros for 64bit byte order swapping Change-Id: Ic31ccd41ba3e0af7046eafc29221810d4cd196c8 Signed-off-by: Stefan Reinauer Reviewed-on: http://review.coreboot.org/275 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi --- src/include/swab.h | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'src/include/swab.h') diff --git a/src/include/swab.h b/src/include/swab.h index 3a166863ec..c5e43709a6 100644 --- a/src/include/swab.h +++ b/src/include/swab.h @@ -30,4 +30,15 @@ (((unsigned int)(x) & (unsigned int)0x00ff0000UL) >> 8) | \ (((unsigned int)(x) & (unsigned int)0xff000000UL) >> 24) )) +#define swab64(x) \ + ((uint64_t)( \ + (((uint64_t)(x) & (uint64_t)0x00000000000000ffULL) << 56) | \ + (((uint64_t)(x) & (uint64_t)0x000000000000ff00ULL) << 40) | \ + (((uint64_t)(x) & (uint64_t)0x0000000000ff0000ULL) << 24) | \ + (((uint64_t)(x) & (uint64_t)0x00000000ff000000ULL) << 8) | \ + (((uint64_t)(x) & (uint64_t)0x000000ff00000000ULL) >> 8) | \ + (((uint64_t)(x) & (uint64_t)0x0000ff0000000000ULL) >> 24) | \ + (((uint64_t)(x) & (uint64_t)0x00ff000000000000ULL) >> 40) | \ + (((uint64_t)(x) & (uint64_t)0xff00000000000000ULL) >> 56) )) + #endif /* _SWAB_H */ -- cgit v1.2.3