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282223a6 | 1 | /* |
6069ff26 WD |
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 | * | |
282223a6 | 6 | * Copyright (C) 1996, 99, 2003 by Ralf Baechle |
6069ff26 | 7 | */ |
282223a6 SK |
8 | #ifndef _ASM_BYTEORDER_H |
9 | #define _ASM_BYTEORDER_H | |
6069ff26 WD |
10 | |
11 | #include <asm/types.h> | |
12 | ||
13 | #ifdef __GNUC__ | |
14 | ||
282223a6 SK |
15 | #ifdef CONFIG_CPU_MIPSR2 |
16 | ||
17 | static __inline__ __attribute_const__ __u16 ___arch__swab16(__u16 x) | |
18 | { | |
19 | __asm__( | |
20 | " wsbh %0, %1 \n" | |
21 | : "=r" (x) | |
22 | : "r" (x)); | |
23 | ||
24 | return x; | |
25 | } | |
26 | #define __arch__swab16(x) ___arch__swab16(x) | |
27 | ||
28 | static __inline__ __attribute_const__ __u32 ___arch__swab32(__u32 x) | |
29 | { | |
30 | __asm__( | |
31 | " wsbh %0, %1 \n" | |
32 | " rotr %0, %0, 16 \n" | |
33 | : "=r" (x) | |
34 | : "r" (x)); | |
35 | ||
36 | return x; | |
37 | } | |
38 | #define __arch__swab32(x) ___arch__swab32(x) | |
39 | ||
40 | #ifdef CONFIG_CPU_MIPS64_R2 | |
41 | ||
42 | static __inline__ __attribute_const__ __u64 ___arch__swab64(__u64 x) | |
43 | { | |
44 | __asm__( | |
45 | " dsbh %0, %1 \n" | |
46 | " dshd %0, %0 \n" | |
47 | " drotr %0, %0, 32 \n" | |
48 | : "=r" (x) | |
49 | : "r" (x)); | |
50 | ||
51 | return x; | |
52 | } | |
53 | ||
54 | #define __arch__swab64(x) ___arch__swab64(x) | |
55 | ||
56 | #endif /* CONFIG_CPU_MIPS64_R2 */ | |
57 | ||
58 | #endif /* CONFIG_CPU_MIPSR2 */ | |
59 | ||
6069ff26 WD |
60 | #if !defined(__STRICT_ANSI__) || defined(__KERNEL__) |
61 | # define __BYTEORDER_HAS_U64__ | |
62 | # define __SWAB_64_THRU_32__ | |
63 | #endif | |
64 | ||
65 | #endif /* __GNUC__ */ | |
66 | ||
282223a6 | 67 | #if defined(__MIPSEB__) |
6069ff26 | 68 | # include <linux/byteorder/big_endian.h> |
282223a6 | 69 | #elif defined(__MIPSEL__) |
6069ff26 WD |
70 | # include <linux/byteorder/little_endian.h> |
71 | #else | |
72 | # error "MIPS, but neither __MIPSEB__, nor __MIPSEL__???" | |
73 | #endif | |
74 | ||
282223a6 | 75 | #endif /* _ASM_BYTEORDER_H */ |