[linux-2.6-block.git] / include / asm-generic / bitsperlong.h

#ifndef __ASM_GENERIC_BITS_PER_LONG
#define __ASM_GENERIC_BITS_PER_LONG

/*
 * There seems to be no way of detecting this automatically from user
 * space, so 64 bit architectures should override this in their
 * bitsperlong.h. In particular, an architecture that supports
 * both 32 and 64 bit user space must not rely on CONFIG_64BIT
 * to decide it, but rather check a compiler provided macro.
 */
#ifndef __BITS_PER_LONG
#define __BITS_PER_LONG 32
#endif

#ifdef __KERNEL__

#ifdef CONFIG_64BIT
#define BITS_PER_LONG 64
#else
#define BITS_PER_LONG 32
#endif /* CONFIG_64BIT */

/*
 * FIXME: The check currently breaks x86-64 build, so it's
 * temporarily disabled. Please fix x86-64 and reenable
 */
#if 0 && BITS_PER_LONG != __BITS_PER_LONG
#error Inconsistent word size. Check asm/bitsperlong.h
#endif

#endif /* __KERNEL__ */
#endif /* __ASM_GENERIC_BITS_PER_LONG */
Commit	Line	Data
c31ae4bb AB	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 */