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 /fs/jfs/endian24.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 'fs/jfs/endian24.h')
-rw-r--r-- | fs/jfs/endian24.h | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/fs/jfs/endian24.h b/fs/jfs/endian24.h new file mode 100644 index 000000000000..ab7cd0567c95 --- /dev/null +++ b/fs/jfs/endian24.h | |||
@@ -0,0 +1,49 @@ | |||
1 | /* | ||
2 | * Copyright (c) International Business Machines Corp., 2001 | ||
3 | * | ||
4 | * This program is free software; you can redistribute it and/or modify | ||
5 | * it under the terms of the GNU General Public License as published by | ||
6 | * the Free Software Foundation; either version 2 of the License, or | ||
7 | * (at your option) any later version. | ||
8 | * | ||
9 | * This program is distributed in the hope that it will be useful, | ||
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | ||
12 | * the GNU General Public License for more details. | ||
13 | * | ||
14 | * You should have received a copy of the GNU General Public License | ||
15 | * along with this program; if not, write to the Free Software | ||
16 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
17 | */ | ||
18 | #ifndef _H_ENDIAN24 | ||
19 | #define _H_ENDIAN24 | ||
20 | |||
21 | /* | ||
22 | * endian24.h: | ||
23 | * | ||
24 | * Endian conversion for 24-byte data | ||
25 | * | ||
26 | */ | ||
27 | #define __swab24(x) \ | ||
28 | ({ \ | ||
29 | __u32 __x = (x); \ | ||
30 | ((__u32)( \ | ||
31 | ((__x & (__u32)0x000000ffUL) << 16) | \ | ||
32 | (__x & (__u32)0x0000ff00UL) | \ | ||
33 | ((__x & (__u32)0x00ff0000UL) >> 16) )); \ | ||
34 | }) | ||
35 | |||
36 | #if (defined(__KERNEL__) && defined(__LITTLE_ENDIAN)) || (defined(__BYTE_ORDER) && (__BYTE_ORDER == __LITTLE_ENDIAN)) | ||
37 | #define __cpu_to_le24(x) ((__u32)(x)) | ||
38 | #define __le24_to_cpu(x) ((__u32)(x)) | ||
39 | #else | ||
40 | #define __cpu_to_le24(x) __swab24(x) | ||
41 | #define __le24_to_cpu(x) __swab24(x) | ||
42 | #endif | ||
43 | |||
44 | #ifdef __KERNEL__ | ||
45 | #define cpu_to_le24 __cpu_to_le24 | ||
46 | #define le24_to_cpu __le24_to_cpu | ||
47 | #endif | ||
48 | |||
49 | #endif /* !_H_ENDIAN24 */ | ||