#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 */