Commit 8cdd3a92 authored by Harvey Harrison's avatar Harvey Harrison Committed by Linus Torvalds
Browse files

mips: introduce asm/swab.h 



Signed-off-by: default avatarHarvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 292b4d09

arch/mips/include/asm/Kbuild

+1 −0
Original line number Diff line number Diff line 
include include/asm-generic/Kbuild.asm



header-y += cachectl.h sgidefs.h sysmips.h

header-y += swab.h

arch/mips/include/asm/byteorder.h

+3 −49
Original line number Diff line number Diff line
@@ -8,60 +8,14 @@ 
#ifndef _ASM_BYTEORDER_H

#define _ASM_BYTEORDER_H



#include <linux/compiler.h>

#include <asm/types.h>

#include <asm/swab.h>



#if defined(__MIPSEB__)

# define __BIG_ENDIAN

#include <linux/byteorder/big_endian.h>

#elif defined(__MIPSEL__)

# define __LITTLE_ENDIAN

#include <linux/byteorder/little_endian.h>

#else

# error "MIPS, but neither __MIPSEB__, nor __MIPSEL__???"

#endif



#define __SWAB_64_THRU_32__



#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 __arch_swab16



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 __arch_swab32



#ifdef CONFIG_CPU_MIPS64_R2

static inline __attribute_const__ __u64 __arch_swab64(__u64 x)

{

	__asm__(

	"	dsbh	%0, %1\n"

	"	dshd	%0, %0"

	: "=r" (x)

	: "r" (x));



	return x;

}

#define __arch_swab64 __arch_swab64

#endif /* CONFIG_CPU_MIPS64_R2 */



#endif /* CONFIG_CPU_MIPSR2 */



#include <linux/byteorder.h>



#endif /* _ASM_BYTEORDER_H */

arch/mips/include/asm/swab.h

0 → 100644
+55 −0
Original line number Diff line number Diff line 
/*

 * 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) 1996, 99, 2003 by Ralf Baechle

 */

#ifndef _ASM_SWAB_H

#define _ASM_SWAB_H



#include <linux/compiler.h>

#include <asm/types.h>



#define __SWAB_64_THRU_32__



#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 __arch_swab16



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 __arch_swab32



#ifdef CONFIG_CPU_MIPS64_R2

static inline __attribute_const__ __u64 __arch_swab64(__u64 x)

{

	__asm__(

	"	dsbh	%0, %1\n"

	"	dshd	%0, %0"

	: "=r" (x)

	: "r" (x));



	return x;

}

#define __arch_swab64 __arch_swab64

#endif /* CONFIG_CPU_MIPS64_R2 */

#endif /* CONFIG_CPU_MIPSR2 */

#endif /* _ASM_SWAB_H */