aboutsummaryrefslogtreecommitdiff
path: root/include/asm-mn10300/byteorder.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/asm-mn10300/byteorder.h')
-rw-r--r--include/asm-mn10300/byteorder.h46
1 files changed, 46 insertions, 0 deletions
diff --git a/include/asm-mn10300/byteorder.h b/include/asm-mn10300/byteorder.h
new file mode 100644
index 000000000000..3c993cc625f8
--- /dev/null
+++ b/include/asm-mn10300/byteorder.h
@@ -0,0 +1,46 @@
+/* MN10300 Byte-order primitive construction
+ *
+ * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+#ifndef _ASM_BYTEORDER_H
+#define _ASM_BYTEORDER_H
+
+#include <asm/types.h>
+
+#ifdef __GNUC__
+
+static inline __attribute__((const))
+__u32 ___arch__swab32(__u32 x)
+{
+ __u32 ret;
+ asm("swap %1,%0" : "=r" (ret) : "r" (x));
+ return ret;
+}
+
+static inline __attribute__((const))
+__u16 ___arch__swab16(__u16 x)
+{
+ __u16 ret;
+ asm("swaph %1,%0" : "=r" (ret) : "r" (x));
+ return ret;
+}
+
+#define __arch__swab32(x) ___arch__swab32(x)
+#define __arch__swab16(x) ___arch__swab16(x)
+
+#if !defined(__STRICT_ANSI__) || defined(__KERNEL__)
+# define __BYTEORDER_HAS_U64__
+# define __SWAB_64_THRU_32__
+#endif
+
+#endif /* __GNUC__ */
+
+#include <linux/byteorder/little_endian.h>
+
+#endif /* _ASM_BYTEORDER_H */