patch-2.4.2 linux/include/asm-cris/byteorder.h

• Lines: 48
• Date: Thu Feb 8 16:32:44 2001
• Orig file: v2.4.1/linux/include/asm-cris/byteorder.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.1/linux/include/asm-cris/byteorder.h linux/include/asm-cris/byteorder.h
@@ -0,0 +1,47 @@
+/* $Id: byteorder.h,v 1.1 2000/07/10 16:32:31 bjornw Exp $ */
+
+#ifndef _CRIS_BYTEORDER_H
+#define _CRIS_BYTEORDER_H
+
+#include <asm/types.h>
+
+#ifdef __GNUC__
+
+/* we just define these two (as we can do the swap in a single
+ * asm instruction in CRIS) and the arch-independent files will put
+ * them together into ntohl etc.
+ */
+
+static __inline__ __const__ __u32 ___arch__swab32(__u32 x)
+{
+	__asm__ ("swapwb %0" : "=r" (x) : "0" (x));
+  
+	return(x);
+}
+
+static __inline__ __const__ __u16 ___arch__swab16(__u16 x)
+{
+	__asm__ ("swapb %0" : "=r" (x) : "0" (x));
+	
+	return(x);
+}
+
+/* defines are necessary because the other files detect the presence
+ * of a defined __arch_swab32, not an inline
+ */
+
+#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
+
+