| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [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_BYTEORDER_H |
| 9 | #define _ASM_BYTEORDER_H |
| 10 | |
| Ralf Baechle | 1e32ceec | 2006-02-01 15:29:21 +0000 | [diff] [blame] | 11 | #include <linux/compiler.h> |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 12 | #include <asm/types.h> |
| 13 | |
| 14 | #ifdef __GNUC__ |
| 15 | |
| Ralf Baechle | 1e32ceec | 2006-02-01 15:29:21 +0000 | [diff] [blame] | 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(x) ___arch__swab16(x) |
| 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(x) ___arch__swab32(x) |
| 40 | |
| Ralf Baechle | bbad812 | 2006-02-15 13:06:34 +0000 | [diff] [blame] | 41 | #ifdef CONFIG_CPU_MIPS64_R2 |
| 42 | |
| 43 | static __inline__ __attribute_const__ __u64 ___arch__swab64(__u64 x) |
| 44 | { |
| 45 | __asm__( |
| 46 | " dsbh %0, %1 \n" |
| 47 | " dshd %0, %0 \n" |
| 48 | " drotr %0, %0, 32 \n" |
| 49 | : "=r" (x) |
| 50 | : "r" (x)); |
| 51 | |
| 52 | return x; |
| 53 | } |
| 54 | |
| 55 | #define __arch__swab64(x) ___arch__swab64(x) |
| 56 | |
| 57 | #endif /* CONFIG_CPU_MIPS64_R2 */ |
| 58 | |
| Ralf Baechle | 1e32ceec | 2006-02-01 15:29:21 +0000 | [diff] [blame] | 59 | #endif /* CONFIG_CPU_MIPSR2 */ |
| 60 | |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | #if !defined(__STRICT_ANSI__) || defined(__KERNEL__) |
| 62 | # define __BYTEORDER_HAS_U64__ |
| 63 | # define __SWAB_64_THRU_32__ |
| 64 | #endif |
| 65 | |
| 66 | #endif /* __GNUC__ */ |
| 67 | |
| 68 | #if defined (__MIPSEB__) |
| 69 | # include <linux/byteorder/big_endian.h> |
| 70 | #elif defined (__MIPSEL__) |
| 71 | # include <linux/byteorder/little_endian.h> |
| 72 | #else |
| 73 | # error "MIPS, but neither __MIPSEB__, nor __MIPSEL__???" |
| 74 | #endif |
| 75 | |
| 76 | #endif /* _ASM_BYTEORDER_H */ |