projects / mirror_ubuntu-bionic-kernel.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 RB |
11 | #include <linux/config.h> |
| 12 | #include <linux/compiler.h> | |
| 1da177e4 LT |
13 | #include <asm/types.h> |
| 14 | ||
| 15 | #ifdef __GNUC__ | |
| 16 | ||
| 1e32ceec RB |
17 | #ifdef CONFIG_CPU_MIPSR2 |
| 18 | ||
| 19 | static __inline__ __attribute_const__ __u16 ___arch__swab16(__u16 x) | |
| 20 | { | |
| 21 | __asm__( | |
| 22 | " wsbh %0, %1 \n" | |
| 23 | : "=r" (x) | |
| 24 | : "r" (x)); | |
| 25 | ||
| 26 | return x; | |
| 27 | } | |
| 28 | #define __arch__swab16(x) ___arch__swab16(x) | |
| 29 | ||
| 30 | static __inline__ __attribute_const__ __u32 ___arch__swab32(__u32 x) | |
| 31 | { | |
| 32 | __asm__( | |
| 33 | " wsbh %0, %1 \n" | |
| 34 | " rotr %0, %0, 16 \n" | |
| 35 | : "=r" (x) | |
| 36 | : "r" (x)); | |
| 37 | ||
| 38 | return x; | |
| 39 | } | |
| 40 | #define __arch__swab32(x) ___arch__swab32(x) | |
| 41 | ||
| bbad8123 RB |
42 | #ifdef CONFIG_CPU_MIPS64_R2 |
| 43 | ||
| 44 | static __inline__ __attribute_const__ __u64 ___arch__swab64(__u64 x) | |
| 45 | { | |
| 46 | __asm__( | |
| 47 | " dsbh %0, %1 \n" | |
| 48 | " dshd %0, %0 \n" | |
| 49 | " drotr %0, %0, 32 \n" | |
| 50 | : "=r" (x) | |
| 51 | : "r" (x)); | |
| 52 | ||
| 53 | return x; | |
| 54 | } | |
| 55 | ||
| 56 | #define __arch__swab64(x) ___arch__swab64(x) | |
| 57 | ||
| 58 | #endif /* CONFIG_CPU_MIPS64_R2 */ | |
| 59 | ||
| 1e32ceec RB |
60 | #endif /* CONFIG_CPU_MIPSR2 */ |
| 61 | ||
| 1da177e4 LT |
62 | #if !defined(__STRICT_ANSI__) || defined(__KERNEL__) |
| 63 | # define __BYTEORDER_HAS_U64__ | |
| 64 | # define __SWAB_64_THRU_32__ | |
| 65 | #endif | |
| 66 | ||
| 67 | #endif /* __GNUC__ */ | |
| 68 | ||
| 69 | #if defined (__MIPSEB__) | |
| 70 | # include <linux/byteorder/big_endian.h> | |
| 71 | #elif defined (__MIPSEL__) | |
| 72 | # include <linux/byteorder/little_endian.h> | |
| 73 | #else | |
| 74 | # error "MIPS, but neither __MIPSEB__, nor __MIPSEL__???" | |
| 75 | #endif | |
| 76 | ||
| 77 | #endif /* _ASM_BYTEORDER_H */ |