Root/include/asm-generic/bitsperlong.h

1#ifndef __ASM_GENERIC_BITS_PER_LONG
2#define __ASM_GENERIC_BITS_PER_LONG
3
4/*
5 * There seems to be no way of detecting this automatically from user
6 * space, so 64 bit architectures should override this in their
7 * bitsperlong.h. In particular, an architecture that supports
8 * both 32 and 64 bit user space must not rely on CONFIG_64BIT
9 * to decide it, but rather check a compiler provided macro.
10 */
11#ifndef __BITS_PER_LONG
12#define __BITS_PER_LONG 32
13#endif
14
15#ifdef __KERNEL__
16
17#ifdef CONFIG_64BIT
18#define BITS_PER_LONG 64
19#else
20#define BITS_PER_LONG 32
21#endif /* CONFIG_64BIT */
22
23/*
24 * FIXME: The check currently breaks x86-64 build, so it's
25 * temporarily disabled. Please fix x86-64 and reenable
26 */
27#if 0 && BITS_PER_LONG != __BITS_PER_LONG
28#error Inconsistent word size. Check asm/bitsperlong.h
29#endif
30
31#endif /* __KERNEL__ */
32#endif /* __ASM_GENERIC_BITS_PER_LONG */
33

Archive Download this file



interactive