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Commit 1af84a62 authored by Harvey Harrison's avatar Harvey Harrison Committed by Linus Torvalds
Browse files

sh: 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 13f7877b

arch/sh/include/asm/Kbuild

+1 −0
Original line number Diff line number Diff line
@@ -6,3 +6,4 @@ unifdef-y += unistd_32.h 
unifdef-y += unistd_64.h

unifdef-y += posix_types_32.h

unifdef-y += posix_types_64.h

unifdef-y += swab.h

arch/sh/include/asm/byteorder.h

+3 −59
Original line number Diff line number Diff line 
#ifndef __ASM_SH_BYTEORDER_H

#define __ASM_SH_BYTEORDER_H



/*

 * Copyright (C) 1999  Niibe Yutaka

 * Copyright (C) 2000, 2001  Paolo Alberelli

 */

#include <linux/compiler.h>

#include <linux/types.h>

#include <asm/swab.h>



#ifdef __LITTLE_ENDIAN__

# define __LITTLE_ENDIAN

#include <linux/byteorder/little_endian.h>

#else

# define __BIG_ENDIAN

#include <linux/byteorder/big_endian.h>

#endif



#define __SWAB_64_THRU_32__



static inline __attribute_const__ __u32 __arch_swab32(__u32 x)

{

	__asm__(

#ifdef __SH5__

		"byterev	%0, %0\n\t"

		"shari		%0, 32, %0"

#else

		"swap.b		%0, %0\n\t"

		"swap.w		%0, %0\n\t"

		"swap.b		%0, %0"

#endif

		: "=r" (x)

		: "0" (x));



	return x;

}

#define __arch_swab32 __arch_swab32



static inline __attribute_const__ __u16 __arch_swab16(__u16 x)

{

	__asm__(

#ifdef __SH5__

		"byterev	%0, %0\n\t"

		"shari		%0, 32, %0"

#else

		"swap.b		%0, %0"

#endif

		: "=r" (x)

		:  "0" (x));



	return x;

}

#define __arch_swab16 __arch_swab16



static inline __u64 __arch_swab64(__u64 val)

{

	union {

		struct { __u32 a,b; } s;

		__u64 u;

	} v, w;

	v.u = val;

	w.s.b = __arch_swab32(v.s.a);

	w.s.a = __arch_swab32(v.s.b);

	return w.u;

}

#define __arch_swab64 __arch_swab64



#include <linux/byteorder.h>



#endif /* __ASM_SH_BYTEORDER_H */

arch/sh/include/asm/swab.h

0 → 100644
+60 −0
Original line number Diff line number Diff line 
#ifndef __ASM_SH_SWAB_H

#define __ASM_SH_SWAB_H



/*

 * Copyright (C) 1999  Niibe Yutaka

 * Copyright (C) 2000, 2001  Paolo Alberelli

 */

#include <linux/compiler.h>

#include <linux/types.h>



#define __SWAB_64_THRU_32__



static inline __attribute_const__ __u32 __arch_swab32(__u32 x)

{

	__asm__(

#ifdef __SH5__

		"byterev	%0, %0\n\t"

		"shari		%0, 32, %0"

#else

		"swap.b		%0, %0\n\t"

		"swap.w		%0, %0\n\t"

		"swap.b		%0, %0"

#endif

		: "=r" (x)

		: "0" (x));



	return x;

}

#define __arch_swab32 __arch_swab32



static inline __attribute_const__ __u16 __arch_swab16(__u16 x)

{

	__asm__(

#ifdef __SH5__

		"byterev	%0, %0\n\t"

		"shari		%0, 32, %0"

#else

		"swap.b		%0, %0"

#endif

		: "=r" (x)

		:  "0" (x));



	return x;

}

#define __arch_swab16 __arch_swab16



static inline __u64 __arch_swab64(__u64 val)

{

	union {

		struct { __u32 a,b; } s;

		__u64 u;

	} v, w;

	v.u = val;

	w.s.b = __arch_swab32(v.s.a);

	w.s.a = __arch_swab32(v.s.b);

	return w.u;

}

#define __arch_swab64 __arch_swab64



#endif /* __ASM_SH_SWAB_H */