diff options
Diffstat (limited to 'arch/arm/include/asm/swab.h')
| -rw-r--r-- | arch/arm/include/asm/swab.h | 41 |
1 files changed, 5 insertions, 36 deletions
diff --git a/arch/arm/include/asm/swab.h b/arch/arm/include/asm/swab.h index 9997ad20eff..537fc9b9188 100644 --- a/arch/arm/include/asm/swab.h +++ b/arch/arm/include/asm/swab.h @@ -15,21 +15,17 @@ #ifndef __ASM_ARM_SWAB_H #define __ASM_ARM_SWAB_H -#include <linux/compiler.h> -#include <linux/types.h> +#include <uapi/asm/swab.h> -#if !defined(__STRICT_ANSI__) || defined(__KERNEL__) -# define __SWAB_64_THRU_32__ -#endif - -#if defined(__KERNEL__) && __LINUX_ARM_ARCH__ >= 6 +#if __LINUX_ARM_ARCH__ >= 6 -static inline __attribute_const__ __u16 __arch_swab16(__u16 x) +static inline __attribute_const__ __u32 __arch_swahb32(__u32 x) { __asm__ ("rev16 %0, %1" : "=r" (x) : "r" (x)); return x; } -#define __arch_swab16 __arch_swab16 +#define __arch_swahb32 __arch_swahb32 +#define __arch_swab16(x) ((__u16)__arch_swahb32(x)) static inline __attribute_const__ __u32 __arch_swab32(__u32 x) { @@ -38,32 +34,5 @@ static inline __attribute_const__ __u32 __arch_swab32(__u32 x) } #define __arch_swab32 __arch_swab32 -#else - -static inline __attribute_const__ __u32 __arch_swab32(__u32 x) -{ - __u32 t; - -#ifndef __thumb__ - if (!__builtin_constant_p(x)) { - /* - * The compiler needs a bit of a hint here to always do the - * right thing and not screw it up to different degrees - * depending on the gcc version. - */ - asm ("eor\t%0, %1, %1, ror #16" : "=r" (t) : "r" (x)); - } else -#endif - t = x ^ ((x << 16) | (x >> 16)); /* eor r1,r0,r0,ror #16 */ - - x = (x << 24) | (x >> 8); /* mov r0,r0,ror #8 */ - t &= ~0x00FF0000; /* bic r1,r1,#0x00FF0000 */ - x ^= (t >> 8); /* eor r0,r0,r1,lsr #8 */ - - return x; -} -#define __arch_swab32 __arch_swab32 - #endif - #endif |