aboutsummaryrefslogtreecommitdiffstats
path: root/arch/mips/include/asm/byteorder.h
diff options
context:
space:
mode:
authorHarvey Harrison <harvey.harrison@gmail.com>2009-01-06 17:56:23 -0500
committerLinus Torvalds <torvalds@linux-foundation.org>2009-01-06 21:10:27 -0500
commit8cdd3a9261e8efe36aeb6c708edb76d7e2b5d13f (patch)
treee988371e5370b60605101eec01425d1b42ae9d19 /arch/mips/include/asm/byteorder.h
parent292b4d0978e3bbb087a83ce77e389c7b462a093c (diff)
mips: introduce asm/swab.h
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/mips/include/asm/byteorder.h')
-rw-r--r--arch/mips/include/asm/byteorder.h52
1 files changed, 3 insertions, 49 deletions
diff --git a/arch/mips/include/asm/byteorder.h b/arch/mips/include/asm/byteorder.h
index 33790b9e0cc0..607b71830707 100644
--- a/arch/mips/include/asm/byteorder.h
+++ b/arch/mips/include/asm/byteorder.h
@@ -8,60 +8,14 @@
8#ifndef _ASM_BYTEORDER_H 8#ifndef _ASM_BYTEORDER_H
9#define _ASM_BYTEORDER_H 9#define _ASM_BYTEORDER_H
10 10
11#include <linux/compiler.h> 11#include <asm/swab.h>
12#include <asm/types.h>
13 12
14#if defined(__MIPSEB__) 13#if defined(__MIPSEB__)
15# define __BIG_ENDIAN 14#include <linux/byteorder/big_endian.h>
16#elif defined(__MIPSEL__) 15#elif defined(__MIPSEL__)
17# define __LITTLE_ENDIAN 16#include <linux/byteorder/little_endian.h>
18#else 17#else
19# error "MIPS, but neither __MIPSEB__, nor __MIPSEL__???" 18# error "MIPS, but neither __MIPSEB__, nor __MIPSEL__???"
20#endif 19#endif
21 20
22#define __SWAB_64_THRU_32__
23
24#ifdef CONFIG_CPU_MIPSR2
25
26static inline __attribute_const__ __u16 __arch_swab16(__u16 x)
27{
28 __asm__(
29 " wsbh %0, %1 \n"
30 : "=r" (x)
31 : "r" (x));
32
33 return x;
34}
35#define __arch_swab16 __arch_swab16
36
37static inline __attribute_const__ __u32 __arch_swab32(__u32 x)
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}
47#define __arch_swab32 __arch_swab32
48
49#ifdef CONFIG_CPU_MIPS64_R2
50static inline __attribute_const__ __u64 __arch_swab64(__u64 x)
51{
52 __asm__(
53 " dsbh %0, %1\n"
54 " dshd %0, %0"
55 : "=r" (x)
56 : "r" (x));
57
58 return x;
59}
60#define __arch_swab64 __arch_swab64
61#endif /* CONFIG_CPU_MIPS64_R2 */
62
63#endif /* CONFIG_CPU_MIPSR2 */
64
65#include <linux/byteorder.h>
66
67#endif /* _ASM_BYTEORDER_H */ 21#endif /* _ASM_BYTEORDER_H */