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| author | Linus Torvalds <torvalds@g5.osdl.org> | 2006-02-07 10:10:09 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-02-07 10:10:09 -0800 |
| commit | e8a82fd030c2e0ba4d4169cc4257ef174ff6f6b4 (patch) | |
| tree | 0515ffe68d9a88eda2d16f45e6391b05475fd9d1 /include/asm-mips/byteorder.h | |
| parent | e1a8e6c9b757c09249ab29fc6da12d9ab64567e1 (diff) | |
| parent | b38c73995f63fe205c0068cb0ce3131895244068 (diff) | |
Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus
Diffstat (limited to 'include/asm-mips/byteorder.h')
| -rw-r--r-- | include/asm-mips/byteorder.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/include/asm-mips/byteorder.h b/include/asm-mips/byteorder.h index d1fe9e5c62e..584f8128fff 100644 --- a/include/asm-mips/byteorder.h +++ b/include/asm-mips/byteorder.h @@ -8,10 +8,39 @@ #ifndef _ASM_BYTEORDER_H #define _ASM_BYTEORDER_H +#include <linux/config.h> +#include <linux/compiler.h> #include <asm/types.h> #ifdef __GNUC__ +#ifdef CONFIG_CPU_MIPSR2 + +static __inline__ __attribute_const__ __u16 ___arch__swab16(__u16 x) +{ + __asm__( + " wsbh %0, %1 \n" + : "=r" (x) + : "r" (x)); + + return x; +} +#define __arch__swab16(x) ___arch__swab16(x) + +static __inline__ __attribute_const__ __u32 ___arch__swab32(__u32 x) +{ + __asm__( + " wsbh %0, %1 \n" + " rotr %0, %0, 16 \n" + : "=r" (x) + : "r" (x)); + + return x; +} +#define __arch__swab32(x) ___arch__swab32(x) + +#endif /* CONFIG_CPU_MIPSR2 */ + #if !defined(__STRICT_ANSI__) || defined(__KERNEL__) # define __BYTEORDER_HAS_U64__ # define __SWAB_64_THRU_32__ |