diff options
author | David Woodhouse <David.Woodhouse@intel.com> | 2008-09-01 11:32:13 +0100 |
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committer | David Woodhouse <David.Woodhouse@intel.com> | 2008-09-01 11:32:13 +0100 |
commit | 9d7548d4ca3c52ecb58f098a32b0756cdf8f96ee (patch) | |
tree | 651f7058bbaa2d8b2855286380d614afcf505118 /arch/blackfin/include/asm/byteorder.h | |
parent | 31db6e9ea1dbdcf66b8227b4f7035dee1b1dd8c0 (diff) | |
parent | bef69ea0dcce574a425feb0a5aa4c63dd108b9a6 (diff) |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'arch/blackfin/include/asm/byteorder.h')
-rw-r--r-- | arch/blackfin/include/asm/byteorder.h | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/arch/blackfin/include/asm/byteorder.h b/arch/blackfin/include/asm/byteorder.h new file mode 100644 index 00000000000..6a673d42da1 --- /dev/null +++ b/arch/blackfin/include/asm/byteorder.h @@ -0,0 +1,48 @@ +#ifndef _BLACKFIN_BYTEORDER_H +#define _BLACKFIN_BYTEORDER_H + +#include <asm/types.h> +#include <linux/compiler.h> + +#ifdef __GNUC__ + +static __inline__ __attribute_const__ __u32 ___arch__swahb32(__u32 xx) +{ + __u32 tmp; + __asm__("%1 = %0 >> 8 (V);\n\t" + "%0 = %0 << 8 (V);\n\t" + "%0 = %0 | %1;\n\t" + : "+d"(xx), "=&d"(tmp)); + return xx; +} + +static __inline__ __attribute_const__ __u32 ___arch__swahw32(__u32 xx) +{ + __u32 rv; + __asm__("%0 = PACK(%1.L, %1.H);\n\t": "=d"(rv): "d"(xx)); + return rv; +} + +#define __arch__swahb32(x) ___arch__swahb32(x) +#define __arch__swahw32(x) ___arch__swahw32(x) +#define __arch__swab32(x) ___arch__swahb32(___arch__swahw32(x)) + +static __inline__ __attribute_const__ __u16 ___arch__swab16(__u16 xx) +{ + __u32 xw = xx; + __asm__("%0 <<= 8;\n %0.L = %0.L + %0.H (NS);\n": "+d"(xw)); + return (__u16)xw; +} + +#define __arch__swab16(x) ___arch__swab16(x) + +#endif + +#if defined(__GNUC__) && !defined(__STRICT_ANSI__) || defined(__KERNEL__) +# define __BYTEORDER_HAS_U64__ +# define __SWAB_64_THRU_32__ +#endif + +#include <linux/byteorder/little_endian.h> + +#endif /* _BLACKFIN_BYTEORDER_H */ |