mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-25 05:34:00 +08:00
94c12cc7d1
Major cleanup of all s390 inline assemblies. They now have a common coding style. Quite a few have been shortened, mainly by using register asm variables. Use of the EX_TABLE macro helps as well. The atomic ops, bit ops and locking inlines new use the Q-constraint if a newer gcc is used. That results in slightly better code. Thanks to Christian Borntraeger for proof reading the changes. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
126 lines
2.5 KiB
C
126 lines
2.5 KiB
C
#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 */
|