diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-sh/byteorder.h |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'include/asm-sh/byteorder.h')
-rw-r--r-- | include/asm-sh/byteorder.h | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/include/asm-sh/byteorder.h b/include/asm-sh/byteorder.h new file mode 100644 index 000000000000..bff2b1382e01 --- /dev/null +++ b/include/asm-sh/byteorder.h | |||
@@ -0,0 +1,56 @@ | |||
1 | #ifndef __ASM_SH_BYTEORDER_H | ||
2 | #define __ASM_SH_BYTEORDER_H | ||
3 | |||
4 | /* | ||
5 | * Copyright (C) 1999 Niibe Yutaka | ||
6 | */ | ||
7 | |||
8 | #include <asm/types.h> | ||
9 | #include <linux/compiler.h> | ||
10 | |||
11 | static __inline__ __attribute_const__ __u32 ___arch__swab32(__u32 x) | ||
12 | { | ||
13 | __asm__("swap.b %0, %0\n\t" | ||
14 | "swap.w %0, %0\n\t" | ||
15 | "swap.b %0, %0" | ||
16 | : "=r" (x) | ||
17 | : "0" (x)); | ||
18 | return x; | ||
19 | } | ||
20 | |||
21 | static __inline__ __attribute_const__ __u16 ___arch__swab16(__u16 x) | ||
22 | { | ||
23 | __asm__("swap.b %0, %0" | ||
24 | : "=r" (x) | ||
25 | : "0" (x)); | ||
26 | return x; | ||
27 | } | ||
28 | |||
29 | static inline __u64 ___arch__swab64(__u64 val) | ||
30 | { | ||
31 | union { | ||
32 | struct { __u32 a,b; } s; | ||
33 | __u64 u; | ||
34 | } v, w; | ||
35 | v.u = val; | ||
36 | w.s.b = ___arch__swab32(v.s.a); | ||
37 | w.s.a = ___arch__swab32(v.s.b); | ||
38 | return w.u; | ||
39 | } | ||
40 | |||
41 | #define __arch__swab64(x) ___arch__swab64(x) | ||
42 | #define __arch__swab32(x) ___arch__swab32(x) | ||
43 | #define __arch__swab16(x) ___arch__swab16(x) | ||
44 | |||
45 | #if !defined(__STRICT_ANSI__) || defined(__KERNEL__) | ||
46 | # define __BYTEORDER_HAS_U64__ | ||
47 | # define __SWAB_64_THRU_32__ | ||
48 | #endif | ||
49 | |||
50 | #ifdef __LITTLE_ENDIAN__ | ||
51 | #include <linux/byteorder/little_endian.h> | ||
52 | #else | ||
53 | #include <linux/byteorder/big_endian.h> | ||
54 | #endif | ||
55 | |||
56 | #endif /* __ASM_SH_BYTEORDER_H */ | ||