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#ifndef _S390_SWAB_H
#define _S390_SWAB_H
/*
* S390 version
* Copyright IBM Corp. 1999
* Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com)
*/
#include <linux/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,%O1+3(%R1)\n"
" icm %0,4,%O1+2(%R1)\n"
" icm %0,2,%O1+1(%R1)\n"
" ic %0,%1"
: "=&d" (result) : "Q" (*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,%O1+1(%R1)\n"
" ic %0,%1\n"
: "=&d" (result) : "Q" (*x) : "cc");
#else /* __s390x__ */
" lrvh %0,%1"
: "=d" (result) : "m" (*x));
#endif /* __s390x__ */
return result;
}
#define __arch_swab16p __arch_swab16p
#endif /* _S390_SWAB_H */
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