From 96a388de5dc53a8b234b3fd41f3ae2cedc9ffd42 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Thu, 11 Oct 2007 11:20:03 +0200 Subject: i386/x86_64: move headers to include/asm-x86 Move the headers to include/asm-x86 and fixup the header install make rules Signed-off-by: Thomas Gleixner Signed-off-by: Ingo Molnar --- include/asm-x86/byteorder_64.h | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 include/asm-x86/byteorder_64.h (limited to 'include/asm-x86/byteorder_64.h') diff --git a/include/asm-x86/byteorder_64.h b/include/asm-x86/byteorder_64.h new file mode 100644 index 000000000000..5e86c868c75e --- /dev/null +++ b/include/asm-x86/byteorder_64.h @@ -0,0 +1,33 @@ +#ifndef _X86_64_BYTEORDER_H +#define _X86_64_BYTEORDER_H + +#include +#include + +#ifdef __GNUC__ + +static __inline__ __attribute_const__ __u64 ___arch__swab64(__u64 x) +{ + __asm__("bswapq %0" : "=r" (x) : "0" (x)); + return x; +} + +static __inline__ __attribute_const__ __u32 ___arch__swab32(__u32 x) +{ + __asm__("bswapl %0" : "=r" (x) : "0" (x)); + return x; +} + +/* Do not define swab16. Gcc is smart enough to recognize "C" version and + convert it into rotation or exhange. */ + +#define __arch__swab32(x) ___arch__swab32(x) +#define __arch__swab64(x) ___arch__swab64(x) + +#endif /* __GNUC__ */ + +#define __BYTEORDER_HAS_U64__ + +#include + +#endif /* _X86_64_BYTEORDER_H */ -- cgit v1.2.3