x86: 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, 2 insertions, 60 deletions

diff --git a/arch/x86/include/asm/byteorder.h b/arch/x86/include/asm/byteorder.h
index f110ad417df3..7c49917e3d9d 100644
--- a/arch/x86/include/asm/byteorder.h
+++ b/arch/x86/include/asm/byteorder.h
@@ -1,65 +1,7 @@
 #ifndef _ASM_X86_BYTEORDER_H
 #define _ASM_X86_BYTEORDER_H
 
-#include <asm/types.h>
-#include <linux/compiler.h>
-
-#define __LITTLE_ENDIAN
-
-static inline __attribute_const__ __u32 __arch_swab32(__u32 val)
-{
-#ifdef __i386__
-# ifdef CONFIG_X86_BSWAP
-        asm("bswap %0" : "=r" (val) : "0" (val));
-# else
-        asm("xchgb %b0,%h0\n\t" /* swap lower bytes     */
-            "rorl $16,%0\n\t"   /* swap words           */
-            "xchgb %b0,%h0"     /* swap higher bytes    */
-            : "=q" (val)
-            : "0" (val));
-# endif
-
-#else /* __i386__ */
-        asm("bswapl %0"
-            : "=r" (val)
-            : "0" (val));
-#endif
-        return val;
-}
-#define __arch_swab32 __arch_swab32
-
-static inline __attribute_const__ __u64 __arch_swab64(__u64 val)
-{
-#ifdef __i386__
-        union {
-                struct {
-                        __u32 a;
-                        __u32 b;
-                } s;
-                __u64 u;
-        } v;
-        v.u = val;
-# ifdef CONFIG_X86_BSWAP
-        asm("bswapl %0 ; bswapl %1 ; xchgl %0,%1"
-            : "=r" (v.s.a), "=r" (v.s.b)
-            : "0" (v.s.a), "1" (v.s.b));
-# else
-        v.s.a = __arch_swab32(v.s.a);
-        v.s.b = __arch_swab32(v.s.b);
-        asm("xchgl %0,%1"
-            : "=r" (v.s.a), "=r" (v.s.b)
-            : "0" (v.s.a), "1" (v.s.b));
-# endif
-        return v.u;
-#else /* __i386__ */
-        asm("bswapq %0"
-            : "=r" (val)
-            : "0" (val));
-        return val;
-#endif
-}
-#define __arch_swab64 __arch_swab64
-
-#include <linux/byteorder.h>
+#include <asm/swab.h>
+#include <linux/byteorder/little_endian.h>
 
 #endif /* _ASM_X86_BYTEORDER_H */