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| author | Arnd Bergmann <arnd@arndb.de> | 2009-05-13 22:56:25 +0000 |
|---|---|---|
| committer | Arnd Bergmann <arnd@klappe2.(none)> | 2009-06-11 21:02:14 +0200 |
| commit | c31ae4bb4a9fa4606a74c0a4fb61b74f804e861e (patch) | |
| tree | 7694b1a05bc1ac660ac26eb9997200556ccd3933 /arch/parisc | |
| parent | 63b852a6b67d0820d388b0ecd0da83ccb4048b8d (diff) | |
| download | linux-c31ae4bb4a9fa4606a74c0a4fb61b74f804e861e.tar.gz linux-c31ae4bb4a9fa4606a74c0a4fb61b74f804e861e.tar.bz2 linux-c31ae4bb4a9fa4606a74c0a4fb61b74f804e861e.zip | |
asm-generic: introduce asm/bitsperlong.h
This provides a reliable way for asm-generic/types.h and other
files to find out if it is running on a 32 or 64 bit platform.
We cannot use CONFIG_64BIT for this in headers that are included
from user space because CONFIG symbols are not available there.
We also cannot do it inside of asm/types.h because some headers
need the word size but cannot include types.h.
The solution is to introduce a new header <asm/bitsperlong.h>
that defines both __BITS_PER_LONG for user space and
BITS_PER_LONG for usage in the kernel. The asm-generic
version falls back to 32 bit unless the architecture overrides
it, which I did for all 64 bit platforms.
Signed-off-by: Remis Lima Baima <remis.developer@googlemail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/parisc')
| -rw-r--r-- | arch/parisc/include/asm/bitsperlong.h | 20 | ||||
| -rw-r--r-- | arch/parisc/include/asm/types.h | 8 |
2 files changed, 20 insertions, 8 deletions
diff --git a/arch/parisc/include/asm/bitsperlong.h b/arch/parisc/include/asm/bitsperlong.h new file mode 100644 index 000000000000..75196b415d3f --- /dev/null +++ b/arch/parisc/include/asm/bitsperlong.h @@ -0,0 +1,20 @@ +#ifndef __ASM_PARISC_BITSPERLONG_H +#define __ASM_PARISC_BITSPERLONG_H + +/* + * using CONFIG_* outside of __KERNEL__ is wrong, + * __LP64__ was also removed from headers, so what + * is the right approach on parisc? + * -arnd + */ +#if (defined(__KERNEL__) && defined(CONFIG_64BIT)) || defined (__LP64__) +#define __BITS_PER_LONG 64 +#define SHIFT_PER_LONG 6 +#else +#define __BITS_PER_LONG 32 +#define SHIFT_PER_LONG 5 +#endif + +#include <asm-generic/bitsperlong.h> + +#endif /* __ASM_PARISC_BITSPERLONG_H */ diff --git a/arch/parisc/include/asm/types.h b/arch/parisc/include/asm/types.h index 7f5a39bfb4ce..20135cc80039 100644 --- a/arch/parisc/include/asm/types.h +++ b/arch/parisc/include/asm/types.h @@ -14,14 +14,6 @@ typedef unsigned short umode_t; */ #ifdef __KERNEL__ -#ifdef CONFIG_64BIT -#define BITS_PER_LONG 64 -#define SHIFT_PER_LONG 6 -#else -#define BITS_PER_LONG 32 -#define SHIFT_PER_LONG 5 -#endif - #ifndef __ASSEMBLY__ /* Dma addresses are 32-bits wide. */ |