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-rw-r--r--arch/arm/include/asm/swab.h19
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/arm/include/asm/swab.h b/arch/arm/include/asm/swab.h
index ca2bf2f6d6ea..9997ad20eff1 100644
--- a/arch/arm/include/asm/swab.h
+++ b/arch/arm/include/asm/swab.h
@@ -22,6 +22,24 @@
22# define __SWAB_64_THRU_32__ 22# define __SWAB_64_THRU_32__
23#endif 23#endif
24 24
25#if defined(__KERNEL__) && __LINUX_ARM_ARCH__ >= 6
26
27static inline __attribute_const__ __u16 __arch_swab16(__u16 x)
28{
29 __asm__ ("rev16 %0, %1" : "=r" (x) : "r" (x));
30 return x;
31}
32#define __arch_swab16 __arch_swab16
33
34static inline __attribute_const__ __u32 __arch_swab32(__u32 x)
35{
36 __asm__ ("rev %0, %1" : "=r" (x) : "r" (x));
37 return x;
38}
39#define __arch_swab32 __arch_swab32
40
41#else
42
25static inline __attribute_const__ __u32 __arch_swab32(__u32 x) 43static inline __attribute_const__ __u32 __arch_swab32(__u32 x)
26{ 44{
27 __u32 t; 45 __u32 t;
@@ -48,3 +66,4 @@ static inline __attribute_const__ __u32 __arch_swab32(__u32 x)
48 66
49#endif 67#endif
50 68
69#endif