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Diffstat (limited to 'arch/x86/include/asm/byteorder.h')
-rw-r--r--arch/x86/include/asm/byteorder.h62
1 files changed, 2 insertions, 60 deletions
diff --git a/arch/x86/include/asm/byteorder.h b/arch/x86/include/asm/byteorder.h
index f110ad417df3..7c49917e3d9d 100644
--- a/arch/x86/include/asm/byteorder.h
+++ b/arch/x86/include/asm/byteorder.h
@@ -1,65 +1,7 @@
1#ifndef _ASM_X86_BYTEORDER_H 1#ifndef _ASM_X86_BYTEORDER_H
2#define _ASM_X86_BYTEORDER_H 2#define _ASM_X86_BYTEORDER_H
3 3
4#include <asm/types.h> 4#include <asm/swab.h>
5#include <linux/compiler.h> 5#include <linux/byteorder/little_endian.h>
6
7#define __LITTLE_ENDIAN
8
9static inline __attribute_const__ __u32 __arch_swab32(__u32 val)
10{
11#ifdef __i386__
12# ifdef CONFIG_X86_BSWAP
13 asm("bswap %0" : "=r" (val) : "0" (val));
14# else
15 asm("xchgb %b0,%h0\n\t" /* swap lower bytes */
16 "rorl $16,%0\n\t" /* swap words */
17 "xchgb %b0,%h0" /* swap higher bytes */
18 : "=q" (val)
19 : "0" (val));
20# endif
21
22#else /* __i386__ */
23 asm("bswapl %0"
24 : "=r" (val)
25 : "0" (val));
26#endif
27 return val;
28}
29#define __arch_swab32 __arch_swab32
30
31static inline __attribute_const__ __u64 __arch_swab64(__u64 val)
32{
33#ifdef __i386__
34 union {
35 struct {
36 __u32 a;
37 __u32 b;
38 } s;
39 __u64 u;
40 } v;
41 v.u = val;
42# ifdef CONFIG_X86_BSWAP
43 asm("bswapl %0 ; bswapl %1 ; xchgl %0,%1"
44 : "=r" (v.s.a), "=r" (v.s.b)
45 : "0" (v.s.a), "1" (v.s.b));
46# else
47 v.s.a = __arch_swab32(v.s.a);
48 v.s.b = __arch_swab32(v.s.b);
49 asm("xchgl %0,%1"
50 : "=r" (v.s.a), "=r" (v.s.b)
51 : "0" (v.s.a), "1" (v.s.b));
52# endif
53 return v.u;
54#else /* __i386__ */
55 asm("bswapq %0"
56 : "=r" (val)
57 : "0" (val));
58 return val;
59#endif
60}
61#define __arch_swab64 __arch_swab64
62
63#include <linux/byteorder.h>
64 6
65#endif /* _ASM_X86_BYTEORDER_H */ 7#endif /* _ASM_X86_BYTEORDER_H */