1#ifndef _S390_SWAB_H 2#define _S390_SWAB_H 3 4/* 5 * include/asm-s390/swab.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 <linux/types.h> 13 14#ifndef __s390x__ 15# define __SWAB_64_THRU_32__ 16#endif 17 18#ifdef __s390x__ 19static inline __u64 __arch_swab64p(const __u64 *x) 20{ 21 __u64 result; 22 23 asm volatile("lrvg %0,%1" : "=d" (result) : "m" (*x)); 24 return result; 25} 26#define __arch_swab64p __arch_swab64p 27 28static inline __u64 __arch_swab64(__u64 x) 29{ 30 __u64 result; 31 32 asm volatile("lrvgr %0,%1" : "=d" (result) : "d" (x)); 33 return result; 34} 35#define __arch_swab64 __arch_swab64 36 37static inline void __arch_swab64s(__u64 *x) 38{ 39 *x = __arch_swab64p(x); 40} 41#define __arch_swab64s __arch_swab64s 42#endif /* __s390x__ */ 43 44static inline __u32 __arch_swab32p(const __u32 *x) 45{ 46 __u32 result; 47 48 asm volatile( 49#ifndef __s390x__ 50 " icm %0,8,%O1+3(%R1)\n" 51 " icm %0,4,%O1+2(%R1)\n" 52 " icm %0,2,%O1+1(%R1)\n" 53 " ic %0,%1" 54 : "=&d" (result) : "Q" (*x) : "cc"); 55#else /* __s390x__ */ 56 " lrv %0,%1" 57 : "=d" (result) : "m" (*x)); 58#endif /* __s390x__ */ 59 return result; 60} 61#define __arch_swab32p __arch_swab32p 62 63#ifdef __s390x__ 64static inline __u32 __arch_swab32(__u32 x) 65{ 66 __u32 result; 67 68 asm volatile("lrvr %0,%1" : "=d" (result) : "d" (x)); 69 return result; 70} 71#define __arch_swab32 __arch_swab32 72#endif /* __s390x__ */ 73 74static inline __u16 __arch_swab16p(const __u16 *x) 75{ 76 __u16 result; 77 78 asm volatile( 79#ifndef __s390x__ 80 " icm %0,2,%O+1(%R1)\n" 81 " ic %0,%1\n" 82 : "=&d" (result) : "Q" (*x) : "cc"); 83#else /* __s390x__ */ 84 " lrvh %0,%1" 85 : "=d" (result) : "m" (*x)); 86#endif /* __s390x__ */ 87 return result; 88} 89#define __arch_swab16p __arch_swab16p 90 91#endif /* _S390_SWAB_H */ 92