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| author | Peter Tyser <ptyser@xes-inc.com> | 2010-04-13 03:28:08 (GMT) |
|---|---|---|
| committer | Wolfgang Denk <wd@denx.de> | 2010-04-13 07:13:12 (GMT) |
| commit | 819833af39a91fa1c1e8252862bbda6f5a602f7b (patch) | |
| tree | d5c9d1628643347ab2b5a8085acfa6f96709fda3 /arch/i386/include/asm/byteorder.h | |
| parent | 61f2b38a17f5b21c59f2afe6cf1cbb5f28638cf9 (diff) | |
| download | u-boot-819833af39a91fa1c1e8252862bbda6f5a602f7b.tar.xz | |
Move architecture-specific includes to arch/$ARCH/include/asm
This helps to clean up the include/ directory so that it only contains
non-architecture-specific headers and also matches Linux's directory
layout which many U-Boot developers are already familiar with.
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Diffstat (limited to 'arch/i386/include/asm/byteorder.h')
| -rw-r--r-- | arch/i386/include/asm/byteorder.h | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/arch/i386/include/asm/byteorder.h b/arch/i386/include/asm/byteorder.h new file mode 100644 index 0000000..7dfeb8b --- /dev/null +++ b/arch/i386/include/asm/byteorder.h @@ -0,0 +1,43 @@ +#ifndef _I386_BYTEORDER_H +#define _I386_BYTEORDER_H + +#include <asm/types.h> + +#ifdef __GNUC__ + + +static __inline__ __u32 ___arch__swab32(__u32 x) +{ +#ifdef CONFIG_X86_BSWAP + __asm__("bswap %0" : "=r" (x) : "0" (x)); +#else + __asm__("xchgb %b0,%h0\n\t" /* swap lower bytes */ + "rorl $16,%0\n\t" /* swap words */ + "xchgb %b0,%h0" /* swap higher bytes */ + :"=q" (x) + : "0" (x)); +#endif + return x; +} + +static __inline__ __u16 ___arch__swab16(__u16 x) +{ + __asm__("xchgb %b0,%h0" /* swap bytes */ \ + : "=q" (x) \ + : "0" (x)); \ + return x; +} + +#define __arch__swab32(x) ___arch__swab32(x) +#define __arch__swab16(x) ___arch__swab16(x) + +#if !defined(__STRICT_ANSI__) || defined(__KERNEL__) +# define __BYTEORDER_HAS_U64__ +# define __SWAB_64_THRU_32__ +#endif + +#endif /* __GNUC__ */ + +#include <linux/byteorder/little_endian.h> + +#endif /* _I386_BYTEORDER_H */ |