m68k: 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, 16 insertions, 0 deletions

diff --git a/include/asm-m68k/swab.h b/include/asm-m68k/swab.h
new file mode 100644
index 000000000000..7221e3066825
--- /dev/null
+++ b/include/asm-m68k/swab.h
@@ -0,0 +1,16 @@
+#ifndef _M68K_SWAB_H
+#define _M68K_SWAB_H
+
+#include <asm/types.h>
+#include <linux/compiler.h>
+
+#define __SWAB_64_THRU_32__
+
+static inline __attribute_const__ __u32 __arch_swab32(__u32 val)
+{
+        __asm__("rolw #8,%0; swap %0; rolw #8,%0" : "=d" (val) : "0" (val));
+        return val;
+}
+#define __arch_swab32 __arch_swab32
+
+#endif /* _M68K_SWAB_H */