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Commit 13f7877b authored by Harvey Harrison's avatar Harvey Harrison Committed by Linus Torvalds
Browse files

s390: 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 156ca2bb

arch/s390/include/asm/Kbuild

+1 −0
Original line number Diff line number Diff line
@@ -13,3 +13,4 @@ unifdef-y += cmb.h 
unifdef-y += debug.h

unifdef-y += chpid.h

unifdef-y += schid.h

unifdef-y += swab.h

arch/s390/include/asm/byteorder.h

+2 −90
Original line number Diff line number Diff line 
#ifndef _S390_BYTEORDER_H

#define _S390_BYTEORDER_H



/*

 *  include/asm-s390/byteorder.h

 *

 *  S390 version

 *    Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation

 *    Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com)

 */



#include <asm/types.h>



#define __BIG_ENDIAN



#ifndef __s390x__

# define __SWAB_64_THRU_32__

#endif



#ifdef __s390x__

static inline __u64 __arch_swab64p(const __u64 *x)

{

	__u64 result;



	asm volatile("lrvg %0,%1" : "=d" (result) : "m" (*x));

	return result;

}

#define __arch_swab64p __arch_swab64p



static inline __u64 __arch_swab64(__u64 x)

{

	__u64 result;



	asm volatile("lrvgr %0,%1" : "=d" (result) : "d" (x));

	return result;

}

#define __arch_swab64 __arch_swab64



static inline void __arch_swab64s(__u64 *x)

{

	*x = __arch_swab64p(x);

}

#define __arch_swab64s __arch_swab64s

#endif /* __s390x__ */



static inline __u32 __arch_swab32p(const __u32 *x)

{

	__u32 result;

	

	asm volatile(

#ifndef __s390x__

		"	icm	%0,8,3(%1)\n"

		"	icm	%0,4,2(%1)\n"

		"	icm	%0,2,1(%1)\n"

		"	ic	%0,0(%1)"

		: "=&d" (result) : "a" (x), "m" (*x) : "cc");

#else /* __s390x__ */

		"	lrv	%0,%1"

		: "=d" (result) : "m" (*x));

#endif /* __s390x__ */

	return result;

}

#define __arch_swab32p __arch_swab32p



#ifdef __s390x__

static inline __u32 __arch_swab32(__u32 x)

{

	__u32 result;

	

	asm volatile("lrvr  %0,%1" : "=d" (result) : "d" (x));

	return result;

}

#define __arch_swab32 __arch_swab32

#endif /* __s390x__ */



static inline __u16 __arch_swab16p(const __u16 *x)

{

	__u16 result;

	

	asm volatile(

#ifndef __s390x__

		"	icm	%0,2,1(%1)\n"

		"	ic	%0,0(%1)\n"

		: "=&d" (result) : "a" (x), "m" (*x) : "cc");

#else /* __s390x__ */

		"	lrvh	%0,%1"

		: "=d" (result) : "m" (*x));

#endif /* __s390x__ */

	return result;

}

#define __arch_swab16p __arch_swab16p



#include <linux/byteorder.h>

#include <asm/swab.h>

#include <linux/byteorder/big_endian.h>



#endif /* _S390_BYTEORDER_H */

arch/s390/include/asm/swab.h

0 → 100644
+91 −0
Original line number Diff line number Diff line 
#ifndef _S390_SWAB_H

#define _S390_SWAB_H



/*

 *  include/asm-s390/swab.h

 *

 *  S390 version

 *    Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation

 *    Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com)

 */



#include <asm/types.h>



#ifndef __s390x__

# define __SWAB_64_THRU_32__

#endif



#ifdef __s390x__

static inline __u64 __arch_swab64p(const __u64 *x)

{

	__u64 result;



	asm volatile("lrvg %0,%1" : "=d" (result) : "m" (*x));

	return result;

}

#define __arch_swab64p __arch_swab64p



static inline __u64 __arch_swab64(__u64 x)

{

	__u64 result;



	asm volatile("lrvgr %0,%1" : "=d" (result) : "d" (x));

	return result;

}

#define __arch_swab64 __arch_swab64



static inline void __arch_swab64s(__u64 *x)

{

	*x = __arch_swab64p(x);

}

#define __arch_swab64s __arch_swab64s

#endif /* __s390x__ */



static inline __u32 __arch_swab32p(const __u32 *x)

{

	__u32 result;

	

	asm volatile(

#ifndef __s390x__

		"	icm	%0,8,3(%1)\n"

		"	icm	%0,4,2(%1)\n"

		"	icm	%0,2,1(%1)\n"

		"	ic	%0,0(%1)"

		: "=&d" (result) : "a" (x), "m" (*x) : "cc");

#else /* __s390x__ */

		"	lrv	%0,%1"

		: "=d" (result) : "m" (*x));

#endif /* __s390x__ */

	return result;

}

#define __arch_swab32p __arch_swab32p



#ifdef __s390x__

static inline __u32 __arch_swab32(__u32 x)

{

	__u32 result;

	

	asm volatile("lrvr  %0,%1" : "=d" (result) : "d" (x));

	return result;

}

#define __arch_swab32 __arch_swab32

#endif /* __s390x__ */



static inline __u16 __arch_swab16p(const __u16 *x)

{

	__u16 result;

	

	asm volatile(

#ifndef __s390x__

		"	icm	%0,2,1(%1)\n"

		"	ic	%0,0(%1)\n"

		: "=&d" (result) : "a" (x), "m" (*x) : "cc");

#else /* __s390x__ */

		"	lrvh	%0,%1"

		: "=d" (result) : "m" (*x));

#endif /* __s390x__ */

	return result;

}

#define __arch_swab16p __arch_swab16p



#endif /* _S390_SWAB_H */