| #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 */ |
