| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | #ifndef __ASM_SH_BYTEORDER_H |
| 2 | #define __ASM_SH_BYTEORDER_H |
| 3 | |
| 4 | /* |
| 5 | * Copyright (C) 1999 Niibe Yutaka |
| 6 | */ |
| 7 | |
| 8 | #include <asm/types.h> |
| 9 | #include <linux/compiler.h> |
| 10 | |
| 11 | static __inline__ __attribute_const__ __u32 ___arch__swab32(__u32 x) |
| 12 | { |
| 13 | __asm__("swap.b %0, %0\n\t" |
| 14 | "swap.w %0, %0\n\t" |
| 15 | "swap.b %0, %0" |
| 16 | : "=r" (x) |
| 17 | : "0" (x)); |
| 18 | return x; |
| 19 | } |
| 20 | |
| 21 | static __inline__ __attribute_const__ __u16 ___arch__swab16(__u16 x) |
| 22 | { |
| 23 | __asm__("swap.b %0, %0" |
| 24 | : "=r" (x) |
| 25 | : "0" (x)); |
| 26 | return x; |
| 27 | } |
| 28 | |
| 29 | static inline __u64 ___arch__swab64(__u64 val) |
| 30 | { |
| 31 | union { |
| 32 | struct { __u32 a,b; } s; |
| 33 | __u64 u; |
| 34 | } v, w; |
| 35 | v.u = val; |
| 36 | w.s.b = ___arch__swab32(v.s.a); |
| 37 | w.s.a = ___arch__swab32(v.s.b); |
| 38 | return w.u; |
| 39 | } |
| 40 | |
| 41 | #define __arch__swab64(x) ___arch__swab64(x) |
| 42 | #define __arch__swab32(x) ___arch__swab32(x) |
| 43 | #define __arch__swab16(x) ___arch__swab16(x) |
| 44 | |
| 45 | #if !defined(__STRICT_ANSI__) || defined(__KERNEL__) |
| 46 | # define __BYTEORDER_HAS_U64__ |
| 47 | # define __SWAB_64_THRU_32__ |
| 48 | #endif |
| 49 | |
| 50 | #ifdef __LITTLE_ENDIAN__ |
| 51 | #include <linux/byteorder/little_endian.h> |
| 52 | #else |
| 53 | #include <linux/byteorder/big_endian.h> |
| 54 | #endif |
| 55 | |
| 56 | #endif /* __ASM_SH_BYTEORDER_H */ |