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authorStefan Reinauer <reinauer@chromium.org>2011-10-14 15:11:16 -0700
committerPatrick Georgi <patrick@georgi-clan.de>2011-10-21 14:13:19 +0200
commit9ea33e9318cfec6fca403b663618cbfbfa9e1e96 (patch)
tree2dd6c4596b51317b0f7f2ac380825fe8f0846dfa /src/include
parentb5381105325391553b17c6ec2455233fc27e73b8 (diff)
downloadcoreboot-9ea33e9318cfec6fca403b663618cbfbfa9e1e96.tar.xz
Add macros for 64bit byte order swapping
Change-Id: Ic31ccd41ba3e0af7046eafc29221810d4cd196c8 Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/275 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
Diffstat (limited to 'src/include')
-rw-r--r--src/include/swab.h11
1 files changed, 11 insertions, 0 deletions
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 */