[deliverable/linux.git] / include / asm-s390 / byteorder.h

#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>

#ifdef __GNUC__

#ifdef __s390x__
static inline __u64 ___arch__swab64p(const __u64 *x)
{
	__u64 result;

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

static inline __u64 ___arch__swab64(__u64 x)
{
	__u64 result;

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

static inline void ___arch__swab64s(__u64 *x)
{
	*x = ___arch__swab64p(x);
}
#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;
}

static inline __u32 ___arch__swab32(__u32 x)
{
#ifndef __s390x__
	return ___arch__swab32p(&x);
#else /* __s390x__ */
	__u32 result;
	
	asm volatile("lrvr  %0,%1" : "=d" (result) : "d" (x));
	return result;
#endif /* __s390x__ */
}

static __inline__ void ___arch__swab32s(__u32 *x)
{
	*x = ___arch__swab32p(x);
}

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;
}

static __inline__ __u16 ___arch__swab16(__u16 x)
{
	return ___arch__swab16p(&x);
}

static __inline__ void ___arch__swab16s(__u16 *x)
{
	*x = ___arch__swab16p(x);
}

#ifdef __s390x__
#define __arch__swab64(x) ___arch__swab64(x)
#define __arch__swab64p(x) ___arch__swab64p(x)
#define __arch__swab64s(x) ___arch__swab64s(x)
#endif /* __s390x__ */
#define __arch__swab32(x) ___arch__swab32(x)
#define __arch__swab16(x) ___arch__swab16(x)
#define __arch__swab32p(x) ___arch__swab32p(x)
#define __arch__swab16p(x) ___arch__swab16p(x)
#define __arch__swab32s(x) ___arch__swab32s(x)
#define __arch__swab16s(x) ___arch__swab16s(x)

#ifndef __s390x__
#if !defined(__STRICT_ANSI__) || defined(__KERNEL__)
#  define __BYTEORDER_HAS_U64__
#  define __SWAB_64_THRU_32__
#endif
#else /* __s390x__ */
#define __BYTEORDER_HAS_U64__
#endif /* __s390x__ */

#endif /* __GNUC__ */

#include <linux/byteorder/big_endian.h>

#endif /* _S390_BYTEORDER_H */
Commit	Line	Data
1da177e4 LT	1	#ifndef _S390_BYTEORDER_H
	2	#define _S390_BYTEORDER_H
	3
	4	/*
	5	* include/asm-s390/byteorder.h
	6	*
	7	* S390 version
	8	* Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
	9	* Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com)
	10	*/
	11
	12	#include <asm/types.h>
	13
	14	#ifdef __GNUC__
	15
	16	#ifdef __s390x__
94c12cc7	17	static inline __u64 ___arch__swab64p(const __u64 *x)
1da177e4 LT	18	{
	19	__u64 result;
	20
94c12cc7	21	asm volatile("lrvg %0,%1" : "=d" (result) : "m" (*x));
1da177e4 LT	22	return result;
	23	}
	24
94c12cc7	25	static inline __u64 ___arch__swab64(__u64 x)
1da177e4 LT	26	{
	27	__u64 result;
	28
94c12cc7	29	asm volatile("lrvgr %0,%1" : "=d" (result) : "d" (x));
1da177e4 LT	30	return result;
	31	}
	32
94c12cc7	33	static inline void ___arch__swab64s(__u64 *x)
1da177e4 LT	34	{
	35	*x = ___arch__swab64p(x);
	36	}
	37	#endif /* __s390x__ */
	38
94c12cc7	39	static inline __u32 ___arch__swab32p(const __u32 *x)
1da177e4 LT	40	{
	41	__u32 result;
	42
94c12cc7	43	asm volatile(
1da177e4	44	#ifndef __s390x__
94c12cc7 MS	45	" icm %0,8,3(%1)\n"
	46	" icm %0,4,2(%1)\n"
	47	" icm %0,2,1(%1)\n"
	48	" ic %0,0(%1)"
	49	: "=&d" (result) : "a" (x), "m" (*x) : "cc");
1da177e4	50	#else /* __s390x__ */
94c12cc7 MS	51	" lrv %0,%1"
94c12cc7 MS	52	: "=d" (result) : "m" (*x));
1da177e4 LT	53	#endif /* __s390x__ */
	54	return result;
	55	}
	56
94c12cc7	57	static inline __u32 ___arch__swab32(__u32 x)
1da177e4 LT	58	{
	59	#ifndef __s390x__
	60	return ___arch__swab32p(&x);
	61	#else /* __s390x__ */
	62	__u32 result;
	63
94c12cc7	64	asm volatile("lrvr %0,%1" : "=d" (result) : "d" (x));
1da177e4 LT	65	return result;
	66	#endif /* __s390x__ */
	67	}
	68
	69	static __inline__ void ___arch__swab32s(__u32 *x)
	70	{
	71	*x = ___arch__swab32p(x);
	72	}
	73
	74	static __inline__ __u16 ___arch__swab16p(const __u16 *x)
	75	{
	76	__u16 result;
	77
94c12cc7	78	asm volatile(
1da177e4	79	#ifndef __s390x__
94c12cc7 MS	80	" icm %0,2,1(%1)\n"
	81	" ic %0,0(%1)\n"
	82	: "=&d" (result) : "a" (x), "m" (*x) : "cc");
1da177e4	83	#else /* __s390x__ */
94c12cc7 MS	84	" lrvh %0,%1"
94c12cc7 MS	85	: "=d" (result) : "m" (*x));
1da177e4 LT	86	#endif /* __s390x__ */
	87	return result;
	88	}
	89
	90	static __inline__ __u16 ___arch__swab16(__u16 x)
	91	{
	92	return ___arch__swab16p(&x);
	93	}
	94
	95	static __inline__ void ___arch__swab16s(__u16 *x)
	96	{
	97	*x = ___arch__swab16p(x);
	98	}
	99
	100	#ifdef __s390x__
	101	#define __arch__swab64(x) ___arch__swab64(x)
	102	#define __arch__swab64p(x) ___arch__swab64p(x)
	103	#define __arch__swab64s(x) ___arch__swab64s(x)
	104	#endif /* __s390x__ */
	105	#define __arch__swab32(x) ___arch__swab32(x)
	106	#define __arch__swab16(x) ___arch__swab16(x)
	107	#define __arch__swab32p(x) ___arch__swab32p(x)
	108	#define __arch__swab16p(x) ___arch__swab16p(x)
	109	#define __arch__swab32s(x) ___arch__swab32s(x)
	110	#define __arch__swab16s(x) ___arch__swab16s(x)
	111
	112	#ifndef __s390x__
	113	#if !defined(__STRICT_ANSI__) \|\| defined(__KERNEL__)
	114	# define __BYTEORDER_HAS_U64__
	115	# define __SWAB_64_THRU_32__
	116	#endif
	117	#else /* __s390x__ */
	118	#define __BYTEORDER_HAS_U64__
	119	#endif /* __s390x__ */
	120
	121	#endif /* __GNUC__ */
	122
	123	#include <linux/byteorder/big_endian.h>
	124
	125	#endif /* _S390_BYTEORDER_H */