projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* |
| 2 | * This file is subject to the terms and conditions of the GNU General Public | |
| 3 | * License. See the file "COPYING" in the main directory of this archive | |
| 4 | * for more details. | |
| 5 | * | |
| 6 | * Copyright (C) 1996, 99, 2003 by Ralf Baechle | |
| 7 | */ | |
| 8 | #ifndef _ASM_BYTEORDER_H | |
| 9 | #define _ASM_BYTEORDER_H | |
| 10 | ||
| 1e32ceec | 11 | #include <linux/compiler.h> |
| 1da177e4 LT |
12 | #include <asm/types.h> |
| 13 | ||
| 255a12fb HH |
14 | #if defined(__MIPSEB__) |
| 15 | # define __BIG_ENDIAN | |
| 16 | #elif defined(__MIPSEL__) | |
| 17 | # define __LITTLE_ENDIAN | |
| 18 | #else | |
| 19 | # error "MIPS, but neither __MIPSEB__, nor __MIPSEL__???" | |
| 20 | #endif | |
| 21 | ||
| 22 | #define __SWAB_64_THRU_32__ | |
| 1da177e4 | 23 | |
| 1e32ceec RB |
24 | #ifdef CONFIG_CPU_MIPSR2 |
| 25 | ||
| 255a12fb | 26 | static inline __attribute_const__ __u16 __arch_swab16(__u16 x) |
| 1e32ceec RB |
27 | { |
| 28 | __asm__( | |
| 29 | " wsbh %0, %1 \n" | |
| 30 | : "=r" (x) | |
| 31 | : "r" (x)); | |
| 32 | ||
| 33 | return x; | |
| 34 | } | |
| 255a12fb | 35 | #define __arch_swab16 __arch_swab16 |
| 1e32ceec | 36 | |
| 255a12fb | 37 | static inline __attribute_const__ __u32 __arch_swab32(__u32 x) |
| 1e32ceec RB |
38 | { |
| 39 | __asm__( | |
| 40 | " wsbh %0, %1 \n" | |
| 41 | " rotr %0, %0, 16 \n" | |
| 42 | : "=r" (x) | |
| 43 | : "r" (x)); | |
| 44 | ||
| 45 | return x; | |
| 46 | } | |
| 255a12fb | 47 | #define __arch_swab32 __arch_swab32 |
| 1e32ceec | 48 | |
| bbad8123 | 49 | #ifdef CONFIG_CPU_MIPS64_R2 |
| 255a12fb | 50 | static inline __attribute_const__ __u64 __arch_swab64(__u64 x) |
| bbad8123 RB |
51 | { |
| 52 | __asm__( | |
| 53 | " dsbh %0, %1 \n" | |
| 54 | " dshd %0, %0 \n" | |
| 55 | " drotr %0, %0, 32 \n" | |
| 56 | : "=r" (x) | |
| 57 | : "r" (x)); | |
| 58 | ||
| 59 | return x; | |
| 60 | } | |
| 255a12fb | 61 | #define __arch_swab64 __arch_swab64 |
| bbad8123 RB |
62 | #endif /* CONFIG_CPU_MIPS64_R2 */ |
| 63 | ||
| 1e32ceec RB |
64 | #endif /* CONFIG_CPU_MIPSR2 */ |
| 65 | ||
| 255a12fb | 66 | #include <linux/byteorder.h> |
| 1da177e4 LT |
67 | |
| 68 | #endif /* _ASM_BYTEORDER_H */ |