| Harvey Harrison | 8cdd3a9 | 2009-01-06 14:56:23 -0800 | [diff] [blame] | 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_SWAB_H |
| 9 | #define _ASM_SWAB_H |
| 10 | |
| 11 | #include <linux/compiler.h> |
| Jaswinder Singh Rajput | a9f6acc | 2009-01-31 11:23:37 +0530 | [diff] [blame] | 12 | #include <linux/types.h> |
| Harvey Harrison | 8cdd3a9 | 2009-01-06 14:56:23 -0800 | [diff] [blame] | 13 | |
| 14 | #define __SWAB_64_THRU_32__ |
| 15 | |
| 16 | #ifdef CONFIG_CPU_MIPSR2 |
| 17 | |
| 18 | static inline __attribute_const__ __u16 __arch_swab16(__u16 x) |
| 19 | { |
| 20 | __asm__( |
| 21 | " wsbh %0, %1 \n" |
| 22 | : "=r" (x) |
| 23 | : "r" (x)); |
| 24 | |
| 25 | return x; |
| 26 | } |
| 27 | #define __arch_swab16 __arch_swab16 |
| 28 | |
| 29 | static inline __attribute_const__ __u32 __arch_swab32(__u32 x) |
| 30 | { |
| 31 | __asm__( |
| 32 | " wsbh %0, %1 \n" |
| 33 | " rotr %0, %0, 16 \n" |
| 34 | : "=r" (x) |
| 35 | : "r" (x)); |
| 36 | |
| 37 | return x; |
| 38 | } |
| 39 | #define __arch_swab32 __arch_swab32 |
| 40 | |
| 41 | #ifdef CONFIG_CPU_MIPS64_R2 |
| 42 | static inline __attribute_const__ __u64 __arch_swab64(__u64 x) |
| 43 | { |
| 44 | __asm__( |
| 45 | " dsbh %0, %1\n" |
| 46 | " dshd %0, %0" |
| 47 | : "=r" (x) |
| 48 | : "r" (x)); |
| 49 | |
| 50 | return x; |
| 51 | } |
| 52 | #define __arch_swab64 __arch_swab64 |
| 53 | #endif /* CONFIG_CPU_MIPS64_R2 */ |
| 54 | #endif /* CONFIG_CPU_MIPSR2 */ |
| 55 | #endif /* _ASM_SWAB_H */ |