linux 2.6.16.38 w/ vs2.0.3-rc1

[linux-2.6.git] / include / asm-mips / byteorder.h

diff --git a/include/asm-mips/byteorder.h b/include/asm-mips/byteorder.h
index d1fe9e5..4ce5bc3 100644 (file)
--- a/include/asm-mips/byteorder.h
+++ b/include/asm-mips/byteorder.h
@@ -8,10 +8,43 @@
 #ifndef _ASM_BYTEORDER_H
 #define _ASM_BYTEORDER_H
 
+#include <linux/config.h>
+#include <linux/compiler.h>
 #include <asm/types.h>
 
 #ifdef __GNUC__
 
+#ifdef CONFIG_CPU_MIPSR2
+
+static __inline__ __attribute_const__ __u16 ___arch__swab16(__u16 x)
+{
+       __asm__(
+       "       .set    mips32r2                \n"
+       "       wsbh    %0, %1                  \n"
+       "       .set    mips0                   \n"
+       : "=r" (x)
+       : "r" (x));
+
+       return x;
+}
+#define __arch__swab16(x)      ___arch__swab16(x)
+
+static __inline__ __attribute_const__ __u32 ___arch__swab32(__u32 x)
+{
+       __asm__(
+       "       .set    mips32r2                \n"
+       "       wsbh    %0, %1                  \n"
+       "       rotr    %0, %0, 16              \n"
+       "       .set    mips0                   \n"
+       : "=r" (x)
+       : "r" (x));
+
+       return x;
+}
+#define __arch__swab32(x)      ___arch__swab32(x)
+
+#endif /* CONFIG_CPU_MIPSR2 */
+
 #if !defined(__STRICT_ANSI__) || defined(__KERNEL__)
 #  define __BYTEORDER_HAS_U64__
 #  define __SWAB_64_THRU_32__