[linux-2.6-block.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/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>
	37	#include <asm-generic/bitops/fls64.h>
1da177e4 LT	38
	39	#ifdef __KERNEL__
	40
2d78d4be AM	41	#include <asm-generic/bitops/sched.h>
2d78d4be AM	42	#include <asm-generic/bitops/ffs.h>
1da177e4 LT	43
	44	/*
	45	* hweightN: returns the hamming weight (i.e. the number
	46	* of bits set) of a N-bit word
	47	*/
	48
	49	#ifdef ULTRA_HAS_POPULATION_COUNT
	50
6593eaed	51	static inline unsigned int hweight64(unsigned long w)
1da177e4 LT	52	{
	53	unsigned int res;
	54
	55	__asm__ ("popc %1,%0" : "=r" (res) : "r" (w));
	56	return res;
	57	}
	58
6593eaed	59	static inline unsigned int hweight32(unsigned int w)
1da177e4 LT	60	{
	61	unsigned int res;
	62
	63	__asm__ ("popc %1,%0" : "=r" (res) : "r" (w & 0xffffffff));
	64	return res;
	65	}
	66
6593eaed	67	static inline unsigned int hweight16(unsigned int w)
1da177e4 LT	68	{
	69	unsigned int res;
	70
	71	__asm__ ("popc %1,%0" : "=r" (res) : "r" (w & 0xffff));
	72	return res;
	73	}
	74
6593eaed	75	static inline unsigned int hweight8(unsigned int w)
1da177e4 LT	76	{
	77	unsigned int res;
	78
	79	__asm__ ("popc %1,%0" : "=r" (res) : "r" (w & 0xff));
	80	return res;
	81	}
	82
	83	#else
	84
2d78d4be	85	#include <asm-generic/bitops/hweight.h>
1da177e4 LT	86
1da177e4 LT	87	#endif
26333576	88	#include <asm-generic/bitops/lock.h>
1da177e4 LT	89	#endif /* __KERNEL__ */
1da177e4 LT	90
2d78d4be	91	#include <asm-generic/bitops/find.h>
1da177e4 LT	92
	93	#ifdef __KERNEL__
	94
2d78d4be	95	#include <asm-generic/bitops/ext2-non-atomic.h>
1da177e4	96
1da177e4	97	#define ext2_set_bit_atomic(lock,nr,addr) \
2d78d4be	98	test_and_set_bit((nr) ^ 0x38,(unsigned long *)(addr))
1da177e4	99	#define ext2_clear_bit_atomic(lock,nr,addr) \
2d78d4be	100	test_and_clear_bit((nr) ^ 0x38,(unsigned long *)(addr))
1da177e4	101
2d78d4be	102	#include <asm-generic/bitops/minix.h>
1da177e4 LT	103
	104	#endif /* __KERNEL__ */
	105
	106	#endif /* defined(_SPARC64_BITOPS_H) */