From af8e24e96facfd42eb12d13c8120e3e95de40aba Mon Sep 17 00:00:00 2001 From: Harvey Harrison Date: Tue, 6 Jan 2009 14:56:30 -0800 Subject: arm: introduce asm/swab.h Signed-off-by: Harvey Harrison Signed-off-by: Linus Torvalds --- arch/arm/include/asm/byteorder.h | 33 +-------------------------------- 1 file changed, 1 insertion(+), 32 deletions(-) (limited to 'arch/arm/include/asm/byteorder.h') diff --git a/arch/arm/include/asm/byteorder.h b/arch/arm/include/asm/byteorder.h index 4fbfb22f65a..c02b6fc28e1 100644 --- a/arch/arm/include/asm/byteorder.h +++ b/arch/arm/include/asm/byteorder.h @@ -15,38 +15,7 @@ #ifndef __ASM_ARM_BYTEORDER_H #define __ASM_ARM_BYTEORDER_H -#include -#include - -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(x) ___arch__swab32(x) - -#if !defined(__STRICT_ANSI__) || defined(__KERNEL__) -# define __BYTEORDER_HAS_U64__ -# define __SWAB_64_THRU_32__ -#endif +#include #ifdef __ARMEB__ #include -- cgit v1.2.3-70-g09d2