projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | #ifndef __ASM_SH_BYTEORDER_H |
| 2 | #define __ASM_SH_BYTEORDER_H | |
| 3 | ||
| 4 | /* | |
| 5 | * Copyright (C) 1999 Niibe Yutaka | |
| 7a65eaf4 | 6 | * Copyright (C) 2000, 2001 Paolo Alberelli |
| 1da177e4 | 7 | */ |
| 1da177e4 | 8 | #include <linux/compiler.h> |
| 7a65eaf4 | 9 | #include <linux/types.h> |
| 1da177e4 | 10 | |
| 7a65eaf4 | 11 | static inline __attribute_const__ __u32 ___arch__swab32(__u32 x) |
| 1da177e4 | 12 | { |
| 7a65eaf4 | 13 | __asm__( |
| 6dba1b67 PM |
14 | #ifdef __SH5__ |
| 15 | "byterev %0, %0\n\t" | |
| 16 | "shari %0, 32, %0" | |
| 17 | #else | |
| 7a65eaf4 PM |
18 | "swap.b %0, %0\n\t" |
| 19 | "swap.w %0, %0\n\t" | |
| 20 | "swap.b %0, %0" | |
| 7a65eaf4 | 21 | #endif |
| 1da177e4 LT |
22 | : "=r" (x) |
| 23 | : "0" (x)); | |
| 7a65eaf4 | 24 | |
| 1da177e4 LT |
25 | return x; |
| 26 | } | |
| 27 | ||
| 7a65eaf4 | 28 | static inline __attribute_const__ __u16 ___arch__swab16(__u16 x) |
| 1da177e4 | 29 | { |
| 7a65eaf4 | 30 | __asm__( |
| 6dba1b67 | 31 | #ifdef __SH5__ |
| 7a65eaf4 PM |
32 | "byterev %0, %0\n\t" |
| 33 | "shari %0, 32, %0" | |
| 6dba1b67 PM |
34 | #else |
| 35 | "swap.b %0, %0" | |
| 7a65eaf4 | 36 | #endif |
| 1da177e4 LT |
37 | : "=r" (x) |
| 38 | : "0" (x)); | |
| 7a65eaf4 | 39 | |
| 1da177e4 LT |
40 | return x; |
| 41 | } | |
| 42 | ||
| 7a65eaf4 PM |
43 | static inline __u64 ___arch__swab64(__u64 val) |
| 44 | { | |
| 45 | union { | |
| 1da177e4 LT |
46 | struct { __u32 a,b; } s; |
| 47 | __u64 u; | |
| 48 | } v, w; | |
| 49 | v.u = val; | |
| 7a65eaf4 PM |
50 | w.s.b = ___arch__swab32(v.s.a); |
| 51 | w.s.a = ___arch__swab32(v.s.b); | |
| 52 | return w.u; | |
| 53 | } | |
| 1da177e4 LT |
54 | |
| 55 | #define __arch__swab64(x) ___arch__swab64(x) | |
| 56 | #define __arch__swab32(x) ___arch__swab32(x) | |
| 57 | #define __arch__swab16(x) ___arch__swab16(x) | |
| 58 | ||
| 59 | #if !defined(__STRICT_ANSI__) || defined(__KERNEL__) | |
| 60 | # define __BYTEORDER_HAS_U64__ | |
| 61 | # define __SWAB_64_THRU_32__ | |
| 62 | #endif | |
| 63 | ||
| 64 | #ifdef __LITTLE_ENDIAN__ | |
| 65 | #include <linux/byteorder/little_endian.h> | |
| 66 | #else | |
| 67 | #include <linux/byteorder/big_endian.h> | |
| 68 | #endif | |
| 69 | ||
| 70 | #endif /* __ASM_SH_BYTEORDER_H */ |