From 282223a607c611425fa33f5428f8eae6636972bb Mon Sep 17 00:00:00 2001
From: Shinya Kuribayashi <skuribay@ruby.dti.ne.jp>
Date: Tue, 25 Mar 2008 11:43:17 +0900
Subject: [MIPS] asm headers' updates

Make some asm headers adjusted to the latest Linux kernel.

Signed-off-by: Shinya Kuribayashi <skuribay@ruby.dti.ne.jp>
---
 include/asm-mips/byteorder.h | 60 ++++++++++++++++++++++++++++++++++++++------
 1 file changed, 52 insertions(+), 8 deletions(-)

(limited to 'include/asm-mips/byteorder.h')

diff --git a/include/asm-mips/byteorder.h b/include/asm-mips/byteorder.h
index b9604cf..b5e685f 100644
--- a/include/asm-mips/byteorder.h
+++ b/include/asm-mips/byteorder.h
@@ -1,18 +1,62 @@
-/* $Id: byteorder.h,v 1.8 1998/11/02 09:29:32 ralf Exp $
- *
+/*
  * This file is subject to the terms and conditions of the GNU General Public
  * License.  See the file "COPYING" in the main directory of this archive
  * for more details.
  *
- * Copyright (C) by Ralf Baechle
+ * Copyright (C) 1996, 99, 2003 by Ralf Baechle
  */
-#ifndef _MIPS_BYTEORDER_H
-#define _MIPS_BYTEORDER_H
+#ifndef _ASM_BYTEORDER_H
+#define _ASM_BYTEORDER_H
 
 #include <asm/types.h>
 
 #ifdef __GNUC__
 
+#ifdef CONFIG_CPU_MIPSR2
+
+static __inline__ __attribute_const__ __u16 ___arch__swab16(__u16 x)
+{
+	__asm__(
+	"	wsbh	%0, %1			\n"
+	: "=r" (x)
+	: "r" (x));
+
+	return x;
+}
+#define __arch__swab16(x)	___arch__swab16(x)
+
+static __inline__ __attribute_const__ __u32 ___arch__swab32(__u32 x)
+{
+	__asm__(
+	"	wsbh	%0, %1			\n"
+	"	rotr	%0, %0, 16		\n"
+	: "=r" (x)
+	: "r" (x));
+
+	return x;
+}
+#define __arch__swab32(x)	___arch__swab32(x)
+
+#ifdef CONFIG_CPU_MIPS64_R2
+
+static __inline__ __attribute_const__ __u64 ___arch__swab64(__u64 x)
+{
+	__asm__(
+	"	dsbh	%0, %1			\n"
+	"	dshd	%0, %0			\n"
+	"	drotr	%0, %0, 32		\n"
+	: "=r" (x)
+	: "r" (x));
+
+	return x;
+}
+
+#define __arch__swab64(x)	___arch__swab64(x)
+
+#endif /* CONFIG_CPU_MIPS64_R2 */
+
+#endif /* CONFIG_CPU_MIPSR2 */
+
 #if !defined(__STRICT_ANSI__) || defined(__KERNEL__)
 #  define __BYTEORDER_HAS_U64__
 #  define __SWAB_64_THRU_32__
@@ -20,12 +64,12 @@
 
 #endif /* __GNUC__ */
 
-#if defined (__MIPSEB__)
+#if defined(__MIPSEB__)
 #  include <linux/byteorder/big_endian.h>
-#elif defined (__MIPSEL__)
+#elif defined(__MIPSEL__)
 #  include <linux/byteorder/little_endian.h>
 #else
 #  error "MIPS, but neither __MIPSEB__, nor __MIPSEL__???"
 #endif
 
-#endif /* _MIPS_BYTEORDER_H */
+#endif /* _ASM_BYTEORDER_H */
-- 
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