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authorJosh Boyer <jwboyer@gmail.com>2006-06-21 08:29:56 -0500
committerJosh Boyer <jwboyer@gmail.com>2006-06-21 08:29:56 -0500
commit3878d8681796c49eb72a334048fbdccd3d321284 (patch)
treec98ccca4e0071ed5bccaf2f5a2367056bb23d114 /include/mtd_swab.h
parent8e181c4a907c3c97c61a1dfc4f5c2c58793132f5 (diff)
Added 64-bit swapping functions
Signed-off-by: Josh Boyer <jwboyer@gmail.com>
Diffstat (limited to 'include/mtd_swab.h')
-rw-r--r--include/mtd_swab.h18
1 files changed, 18 insertions, 0 deletions
diff --git a/include/mtd_swab.h b/include/mtd_swab.h
index 5c76ed5..c3340a6 100644
--- a/include/mtd_swab.h
+++ b/include/mtd_swab.h
@@ -14,20 +14,38 @@
(((uint32_t)(x) & (uint32_t)0x00ff0000UL) >> 8) | \
(((uint32_t)(x) & (uint32_t)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) ))
+
+
#if __BYTE_ORDER == __BIG_ENDIAN
#define cpu_to_le16(x) ({ uint16_t _x = x; swab16(_x); })
#define cpu_to_le32(x) ({ uint32_t _x = x; swab32(_x); })
+#define cpu_to_le64(x) ({ uint64_t _x = x; swab64(_x); })
#define cpu_to_be16(x) (x)
#define cpu_to_be32(x) (x)
+#define cpu_to_be64(x) (x)
#else
#define cpu_to_le16(x) (x)
#define cpu_to_le32(x) (x)
+#define cpu_to_le64(x) (x)
#define cpu_to_be16(x) ({ uint16_t _x = x; swab16(_x); })
#define cpu_to_be32(x) ({ uint32_t _x = x; swab32(_x); })
+#define cpu_to_be64(x) ({ uint64_t _x = x; swab64(_x); })
#endif
#define le16_to_cpu(x) cpu_to_le16(x)
#define be16_to_cpu(x) cpu_to_be16(x)
#define le32_to_cpu(x) cpu_to_le32(x)
#define be32_to_cpu(x) cpu_to_be32(x)
+#define le64_to_cpu(x) cpu_to_le64(x)
+#define be64_to_cpu(x) cpu_to_be64(x)
#endif