patch-2.1.80 linux/include/asm-arm/byteorder.h

• Lines: 40
• Date: Tue Jan 20 16:39:42 1998
• Orig file: v2.1.79/linux/include/asm-arm/byteorder.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.1.79/linux/include/asm-arm/byteorder.h linux/include/asm-arm/byteorder.h
@@ -0,0 +1,39 @@
+#ifndef __ASM_ARM_BYTEORDER_H
+#define __ASM_ARM_BYTEORDER_H
+
+#include <asm/types.h>
+
+#ifdef __GNUC__
+
+static __inline__ __const__ __u32 ___arch__swab32(__u32 x)
+{
+	unsigned long xx;
+	__asm__("eor\t%1, %0, %0, ror #16\n\t"
+		"bic\t%1, %1, #0xff0000\n\t"
+		"mov\t%0, %0, ror #8\n\t"
+		"eor\t%0, %0, %1, lsr #8\n\t"
+		: "=r" (x), "=&r" (xx)
+		: "0" (x));
+	return x;
+}
+
+static __inline__ __const__ __u16 ___arch__swab16(__u16 x)
+{
+	__asm__("eor\t%0, %0, %0, lsr #8\n\t"
+		"eor\t%0, %0, %0, lsl #8\n\t"
+		"bic\t%0, %0, #0xff0000\n\t"
+		"eor\t%0, %0, %0, lsr #8\n\t"
+		: "=r" (x) 
+		: "0" (x));
+	return x;
+}
+
+#define __arch__swab32(x) ___arch__swab32(x)
+#define __arch__swab16(x) ___arch__swab16(x)
+
+#endif /* __GNUC__ */
+
+#include <linux/byteorder/little_endian.h>
+
+#endif
+