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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
commit156ca2bbf6503a02d7d6829886ce381d572de66e (patch)
treed0d3b4aa44b8d819fdd9c02be22b71e651a022c8 /arch/powerpc/include/asm/byteorder.h
parent8cdd3a9261e8efe36aeb6c708edb76d7e2b5d13f (diff)
powerpc: 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/powerpc/include/asm/byteorder.h')
-rw-r--r--arch/powerpc/include/asm/byteorder.h83
1 files changed, 2 insertions, 81 deletions
diff --git a/arch/powerpc/include/asm/byteorder.h b/arch/powerpc/include/asm/byteorder.h
index d5de325472e9..5cca27a41532 100644
--- a/arch/powerpc/include/asm/byteorder.h
+++ b/arch/powerpc/include/asm/byteorder.h
@@ -8,86 +8,7 @@
8 * 2 of the License, or (at your option) any later version. 8 * 2 of the License, or (at your option) any later version.
9 */ 9 */
10 10
11#include <asm/types.h> 11#include <asm/swab.h>
12#include <linux/compiler.h> 12#include <linux/byteorder/big_endian.h>
13
14#define __BIG_ENDIAN
15
16#ifdef __GNUC__
17#ifdef __KERNEL__
18
19static __inline__ __u16 ld_le16(const volatile __u16 *addr)
20{
21 __u16 val;
22
23 __asm__ __volatile__ ("lhbrx %0,0,%1" : "=r" (val) : "r" (addr), "m" (*addr));
24 return val;
25}
26#define __arch_swab16p ld_le16
27
28static __inline__ void st_le16(volatile __u16 *addr, const __u16 val)
29{
30 __asm__ __volatile__ ("sthbrx %1,0,%2" : "=m" (*addr) : "r" (val), "r" (addr));
31}
32
33static inline void __arch_swab16s(__u16 *addr)
34{
35 st_le16(addr, *addr);
36}
37#define __arch_swab16s __arch_swab16s
38
39static __inline__ __u32 ld_le32(const volatile __u32 *addr)
40{
41 __u32 val;
42
43 __asm__ __volatile__ ("lwbrx %0,0,%1" : "=r" (val) : "r" (addr), "m" (*addr));
44 return val;
45}
46#define __arch_swab32p ld_le32
47
48static __inline__ void st_le32(volatile __u32 *addr, const __u32 val)
49{
50 __asm__ __volatile__ ("stwbrx %1,0,%2" : "=m" (*addr) : "r" (val), "r" (addr));
51}
52
53static inline void __arch_swab32s(__u32 *addr)
54{
55 st_le32(addr, *addr);
56}
57#define __arch_swab32s __arch_swab32s
58
59static inline __attribute_const__ __u16 __arch_swab16(__u16 value)
60{
61 __u16 result;
62
63 __asm__("rlwimi %0,%1,8,16,23"
64 : "=r" (result)
65 : "r" (value), "0" (value >> 8));
66 return result;
67}
68#define __arch_swab16 __arch_swab16
69
70static inline __attribute_const__ __u32 __arch_swab32(__u32 value)
71{
72 __u32 result;
73
74 __asm__("rlwimi %0,%1,24,16,23\n\t"
75 "rlwimi %0,%1,8,8,15\n\t"
76 "rlwimi %0,%1,24,0,7"
77 : "=r" (result)
78 : "r" (value), "0" (value >> 24));
79 return result;
80}
81#define __arch_swab32 __arch_swab32
82
83#endif /* __KERNEL__ */
84
85#ifndef __powerpc64__
86#define __SWAB_64_THRU_32__
87#endif /* __powerpc64__ */
88
89#endif /* __GNUC__ */
90
91#include <linux/byteorder.h>
92 13
93#endif /* _ASM_POWERPC_BYTEORDER_H */ 14#endif /* _ASM_POWERPC_BYTEORDER_H */