arm: introduce asm/swab.h

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 1 insertions, 32 deletions

diff --git a/arch/arm/include/asm/byteorder.h b/arch/arm/include/asm/byteorder.h
index 4fbfb22f65a0..c02b6fc28e1a 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 <linux/compiler.h>
-#include <asm/types.h>
-
-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 <asm/swab.h>
 
 #ifdef __ARMEB__
 #include <linux/byteorder/big_endian.h>