sh: SH-5 byteorder routines.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 30 insertions, 15 deletions

diff --git a/include/asm-sh/byteorder.h b/include/asm-sh/byteorder.h
index bff2b1382e01..0eb9904b6545 100644
--- a/include/asm-sh/byteorder.h
+++ b/include/asm-sh/byteorder.h
@@ -3,40 +3,55 @@
 
 /*
  * Copyright (C) 1999  Niibe Yutaka
+ * Copyright (C) 2000, 2001  Paolo Alberelli
  */
-
-#include <asm/types.h>
 #include <linux/compiler.h>
+#include <linux/types.h>
 
-static __inline__ __attribute_const__ __u32 ___arch__swab32(__u32 x)
+static inline __attribute_const__ __u32 ___arch__swab32(__u32 x)
 {
-        __asm__("swap.b %0, %0\n\t"
-                "swap.w %0, %0\n\t"
-                "swap.b %0, %0"
+        __asm__(
+#ifdef CONFIG_SUPERH32
+                "swap.b         %0, %0\n\t"
+                "swap.w         %0, %0\n\t"
+                "swap.b         %0, %0"
+#else
+                "byterev        %0, %0\n\t"
+                "shari          %0, 32, %0"
+#endif
                 : "=r" (x)
                 : "0" (x));
+
         return x;
 }
 
-static __inline__ __attribute_const__ __u16 ___arch__swab16(__u16 x)
+static inline __attribute_const__ __u16 ___arch__swab16(__u16 x)
 {
-        __asm__("swap.b %0, %0"
+        __asm__(
+#ifdef CONFIG_SUPERH32
+                "swap.b         %0, %0"
+#else
+                "byterev        %0, %0\n\t"
+                "shari          %0, 32, %0"
+
+#endif
                 : "=r" (x)
                 :  "0" (x));
+
         return x;
 }
 
-static inline __u64 ___arch__swab64(__u64 val) 
-{ 
-        union { 
+static inline __u64 ___arch__swab64(__u64 val)
+{
+        union {
                 struct { __u32 a,b; } s;
                 __u64 u;
         } v, w;
         v.u = val;
-        w.s.b = ___arch__swab32(v.s.a); 
-        w.s.a = ___arch__swab32(v.s.b); 
-        return w.u;     
-} 
+        w.s.b = ___arch__swab32(v.s.a);
+        w.s.a = ___arch__swab32(v.s.b);
+        return w.u;
+}
 
 #define __arch__swab64(x) ___arch__swab64(x)
 #define __arch__swab32(x) ___arch__swab32(x)