[deliverable/linux.git] / include / asm-sparc64 / bitops.h

/* $Id: bitops.h,v 1.39 2002/01/30 01:40:00 davem Exp $
 * bitops.h: Bit string operations on the V9.
 *
 * Copyright 1996, 1997 David S. Miller (davem@caip.rutgers.edu)
 */

#ifndef _SPARC64_BITOPS_H
#define _SPARC64_BITOPS_H

#ifndef _LINUX_BITOPS_H
#error only <linux/bitops.h> can be included directly
#endif

#include <linux/compiler.h>
#include <asm/byteorder.h>

extern int test_and_set_bit(unsigned long nr, volatile unsigned long *addr);
extern int test_and_clear_bit(unsigned long nr, volatile unsigned long *addr);
extern int test_and_change_bit(unsigned long nr, volatile unsigned long *addr);
extern void set_bit(unsigned long nr, volatile unsigned long *addr);
extern void clear_bit(unsigned long nr, volatile unsigned long *addr);
extern void change_bit(unsigned long nr, volatile unsigned long *addr);

#include <asm-generic/bitops/non-atomic.h>

#ifdef CONFIG_SMP
#define smp_mb__before_clear_bit()	membar_storeload_loadload()
#define smp_mb__after_clear_bit()	membar_storeload_storestore()
#else
#define smp_mb__before_clear_bit()	barrier()
#define smp_mb__after_clear_bit()	barrier()
#endif

#include <asm-generic/bitops/ffz.h>
#include <asm-generic/bitops/__ffs.h>
#include <asm-generic/bitops/fls.h>
#include <asm-generic/bitops/__fls.h>
#include <asm-generic/bitops/fls64.h>

#ifdef __KERNEL__

#include <asm-generic/bitops/sched.h>
#include <asm-generic/bitops/ffs.h>

/*
 * hweightN: returns the hamming weight (i.e. the number
 * of bits set) of a N-bit word
 */

#ifdef ULTRA_HAS_POPULATION_COUNT

static inline unsigned int hweight64(unsigned long w)
{
	unsigned int res;

	__asm__ ("popc %1,%0" : "=r" (res) : "r" (w));
	return res;
}

static inline unsigned int hweight32(unsigned int w)
{
	unsigned int res;

	__asm__ ("popc %1,%0" : "=r" (res) : "r" (w & 0xffffffff));
	return res;
}

static inline unsigned int hweight16(unsigned int w)
{
	unsigned int res;

	__asm__ ("popc %1,%0" : "=r" (res) : "r" (w & 0xffff));
	return res;
}

static inline unsigned int hweight8(unsigned int w)
{
	unsigned int res;

	__asm__ ("popc %1,%0" : "=r" (res) : "r" (w & 0xff));
	return res;
}

#else

#include <asm-generic/bitops/hweight.h>

#endif
#include <asm-generic/bitops/lock.h>
#endif /* __KERNEL__ */

#include <asm-generic/bitops/find.h>

#ifdef __KERNEL__

#include <asm-generic/bitops/ext2-non-atomic.h>

#define ext2_set_bit_atomic(lock,nr,addr) \
	test_and_set_bit((nr) ^ 0x38,(unsigned long *)(addr))
#define ext2_clear_bit_atomic(lock,nr,addr) \
	test_and_clear_bit((nr) ^ 0x38,(unsigned long *)(addr))

#include <asm-generic/bitops/minix.h>

#endif /* __KERNEL__ */

#endif /* defined(_SPARC64_BITOPS_H) */
Commit	Line	Data
1da177e4 LT	1	/* $Id: bitops.h,v 1.39 2002/01/30 01:40:00 davem Exp $
	2	* bitops.h: Bit string operations on the V9.
	3	*
	4	* Copyright 1996, 1997 David S. Miller (davem@caip.rutgers.edu)
	5	*/
	6
	7	#ifndef _SPARC64_BITOPS_H
	8	#define _SPARC64_BITOPS_H
	9
0624517d JS	10	#ifndef _LINUX_BITOPS_H
	11	#error only <linux/bitops.h> can be included directly
	12	#endif
	13
1da177e4 LT	14	#include <linux/compiler.h>
	15	#include <asm/byteorder.h>
	16
	17	extern int test_and_set_bit(unsigned long nr, volatile unsigned long *addr);
	18	extern int test_and_clear_bit(unsigned long nr, volatile unsigned long *addr);
	19	extern int test_and_change_bit(unsigned long nr, volatile unsigned long *addr);
	20	extern void set_bit(unsigned long nr, volatile unsigned long *addr);
	21	extern void clear_bit(unsigned long nr, volatile unsigned long *addr);
	22	extern void change_bit(unsigned long nr, volatile unsigned long *addr);
	23
2d78d4be	24	#include <asm-generic/bitops/non-atomic.h>
1da177e4 LT	25
1da177e4 LT	26	#ifdef CONFIG_SMP
4f07118f DM	27	#define smp_mb__before_clear_bit() membar_storeload_loadload()
4f07118f DM	28	#define smp_mb__after_clear_bit() membar_storeload_storestore()
1da177e4 LT	29	#else
	30	#define smp_mb__before_clear_bit() barrier()
	31	#define smp_mb__after_clear_bit() barrier()
	32	#endif
	33
2d78d4be AM	34	#include <asm-generic/bitops/ffz.h>
	35	#include <asm-generic/bitops/__ffs.h>
	36	#include <asm-generic/bitops/fls.h>
56a6b1eb	37	#include <asm-generic/bitops/__fls.h>
2d78d4be	38	#include <asm-generic/bitops/fls64.h>
1da177e4 LT	39
	40	#ifdef __KERNEL__
	41
2d78d4be AM	42	#include <asm-generic/bitops/sched.h>
2d78d4be AM	43	#include <asm-generic/bitops/ffs.h>
1da177e4 LT	44
	45	/*
	46	* hweightN: returns the hamming weight (i.e. the number
	47	* of bits set) of a N-bit word
	48	*/
	49
	50	#ifdef ULTRA_HAS_POPULATION_COUNT
	51
6593eaed	52	static inline unsigned int hweight64(unsigned long w)
1da177e4 LT	53	{
	54	unsigned int res;
	55
	56	__asm__ ("popc %1,%0" : "=r" (res) : "r" (w));
	57	return res;
	58	}
	59
6593eaed	60	static inline unsigned int hweight32(unsigned int w)
1da177e4 LT	61	{
	62	unsigned int res;
	63
	64	__asm__ ("popc %1,%0" : "=r" (res) : "r" (w & 0xffffffff));
	65	return res;
	66	}
	67
6593eaed	68	static inline unsigned int hweight16(unsigned int w)
1da177e4 LT	69	{
	70	unsigned int res;
	71
	72	__asm__ ("popc %1,%0" : "=r" (res) : "r" (w & 0xffff));
	73	return res;
	74	}
	75
6593eaed	76	static inline unsigned int hweight8(unsigned int w)
1da177e4 LT	77	{
	78	unsigned int res;
	79
	80	__asm__ ("popc %1,%0" : "=r" (res) : "r" (w & 0xff));
	81	return res;
	82	}
	83
	84	#else
	85
2d78d4be	86	#include <asm-generic/bitops/hweight.h>
1da177e4 LT	87
1da177e4 LT	88	#endif
26333576	89	#include <asm-generic/bitops/lock.h>
1da177e4 LT	90	#endif /* __KERNEL__ */
1da177e4 LT	91
2d78d4be	92	#include <asm-generic/bitops/find.h>
1da177e4 LT	93
	94	#ifdef __KERNEL__
	95
2d78d4be	96	#include <asm-generic/bitops/ext2-non-atomic.h>
1da177e4	97
1da177e4	98	#define ext2_set_bit_atomic(lock,nr,addr) \
2d78d4be	99	test_and_set_bit((nr) ^ 0x38,(unsigned long *)(addr))
1da177e4	100	#define ext2_clear_bit_atomic(lock,nr,addr) \
2d78d4be	101	test_and_clear_bit((nr) ^ 0x38,(unsigned long *)(addr))
1da177e4	102
2d78d4be	103	#include <asm-generic/bitops/minix.h>
1da177e4 LT	104
	105	#endif /* __KERNEL__ */
	106
	107	#endif /* defined(_SPARC64_BITOPS_H) */