| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame^] | 1 | #ifndef _S390_BYTEORDER_H |
| 2 | #define _S390_BYTEORDER_H |
| 3 | |
| 4 | /* |
| 5 | * include/asm-s390/byteorder.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 <asm/types.h> |
| 13 | |
| 14 | #ifdef __GNUC__ |
| 15 | |
| 16 | #ifdef __s390x__ |
| 17 | static __inline__ __u64 ___arch__swab64p(const __u64 *x) |
| 18 | { |
| 19 | __u64 result; |
| 20 | |
| 21 | __asm__ __volatile__ ( |
| 22 | " lrvg %0,%1" |
| 23 | : "=d" (result) : "m" (*x) ); |
| 24 | return result; |
| 25 | } |
| 26 | |
| 27 | static __inline__ __u64 ___arch__swab64(__u64 x) |
| 28 | { |
| 29 | __u64 result; |
| 30 | |
| 31 | __asm__ __volatile__ ( |
| 32 | " lrvgr %0,%1" |
| 33 | : "=d" (result) : "d" (x) ); |
| 34 | return result; |
| 35 | } |
| 36 | |
| 37 | static __inline__ void ___arch__swab64s(__u64 *x) |
| 38 | { |
| 39 | *x = ___arch__swab64p(x); |
| 40 | } |
| 41 | #endif /* __s390x__ */ |
| 42 | |
| 43 | static __inline__ __u32 ___arch__swab32p(const __u32 *x) |
| 44 | { |
| 45 | __u32 result; |
| 46 | |
| 47 | __asm__ __volatile__ ( |
| 48 | #ifndef __s390x__ |
| 49 | " icm %0,8,3(%1)\n" |
| 50 | " icm %0,4,2(%1)\n" |
| 51 | " icm %0,2,1(%1)\n" |
| 52 | " ic %0,0(%1)" |
| 53 | : "=&d" (result) : "a" (x), "m" (*x) : "cc" ); |
| 54 | #else /* __s390x__ */ |
| 55 | " lrv %0,%1" |
| 56 | : "=d" (result) : "m" (*x) ); |
| 57 | #endif /* __s390x__ */ |
| 58 | return result; |
| 59 | } |
| 60 | |
| 61 | static __inline__ __u32 ___arch__swab32(__u32 x) |
| 62 | { |
| 63 | #ifndef __s390x__ |
| 64 | return ___arch__swab32p(&x); |
| 65 | #else /* __s390x__ */ |
| 66 | __u32 result; |
| 67 | |
| 68 | __asm__ __volatile__ ( |
| 69 | " lrvr %0,%1" |
| 70 | : "=d" (result) : "d" (x) ); |
| 71 | return result; |
| 72 | #endif /* __s390x__ */ |
| 73 | } |
| 74 | |
| 75 | static __inline__ void ___arch__swab32s(__u32 *x) |
| 76 | { |
| 77 | *x = ___arch__swab32p(x); |
| 78 | } |
| 79 | |
| 80 | static __inline__ __u16 ___arch__swab16p(const __u16 *x) |
| 81 | { |
| 82 | __u16 result; |
| 83 | |
| 84 | __asm__ __volatile__ ( |
| 85 | #ifndef __s390x__ |
| 86 | " icm %0,2,1(%1)\n" |
| 87 | " ic %0,0(%1)\n" |
| 88 | : "=&d" (result) : "a" (x), "m" (*x) : "cc" ); |
| 89 | #else /* __s390x__ */ |
| 90 | " lrvh %0,%1" |
| 91 | : "=d" (result) : "m" (*x) ); |
| 92 | #endif /* __s390x__ */ |
| 93 | return result; |
| 94 | } |
| 95 | |
| 96 | static __inline__ __u16 ___arch__swab16(__u16 x) |
| 97 | { |
| 98 | return ___arch__swab16p(&x); |
| 99 | } |
| 100 | |
| 101 | static __inline__ void ___arch__swab16s(__u16 *x) |
| 102 | { |
| 103 | *x = ___arch__swab16p(x); |
| 104 | } |
| 105 | |
| 106 | #ifdef __s390x__ |
| 107 | #define __arch__swab64(x) ___arch__swab64(x) |
| 108 | #define __arch__swab64p(x) ___arch__swab64p(x) |
| 109 | #define __arch__swab64s(x) ___arch__swab64s(x) |
| 110 | #endif /* __s390x__ */ |
| 111 | #define __arch__swab32(x) ___arch__swab32(x) |
| 112 | #define __arch__swab16(x) ___arch__swab16(x) |
| 113 | #define __arch__swab32p(x) ___arch__swab32p(x) |
| 114 | #define __arch__swab16p(x) ___arch__swab16p(x) |
| 115 | #define __arch__swab32s(x) ___arch__swab32s(x) |
| 116 | #define __arch__swab16s(x) ___arch__swab16s(x) |
| 117 | |
| 118 | #ifndef __s390x__ |
| 119 | #if !defined(__STRICT_ANSI__) || defined(__KERNEL__) |
| 120 | # define __BYTEORDER_HAS_U64__ |
| 121 | # define __SWAB_64_THRU_32__ |
| 122 | #endif |
| 123 | #else /* __s390x__ */ |
| 124 | #define __BYTEORDER_HAS_U64__ |
| 125 | #endif /* __s390x__ */ |
| 126 | |
| 127 | #endif /* __GNUC__ */ |
| 128 | |
| 129 | #include <linux/byteorder/big_endian.h> |
| 130 | |
| 131 | #endif /* _S390_BYTEORDER_H */ |