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/* SPDX-License-Identifier: GPL-2.0 */
/*
* bitops.h: Bit string operations on the Sparc.
*
* Copyright 1995 David S. Miller ([email protected])
* Copyright 1996 Eddie C. Dost ([email protected])
* Copyright 2001 Anton Blanchard ([email protected])
*/
#ifndef _SPARC_BITOPS_H
#define _SPARC_BITOPS_H
#include <linux/compiler.h>
#include <asm/byteorder.h>
#ifdef __KERNEL__
#ifndef _LINUX_BITOPS_H
#error only <linux/bitops.h> can be included directly
#endif
unsigned long ___set_bit(unsigned long *addr, unsigned long mask);
unsigned long ___clear_bit(unsigned long *addr, unsigned long mask);
unsigned long ___change_bit(unsigned long *addr, unsigned long mask);
/*
* Set bit 'nr' in 32-bit quantity at address 'addr' where bit '0'
* is in the highest of the four bytes and bit '31' is the high bit
* within the first byte. Sparc is BIG-Endian. Unless noted otherwise
* all bit-ops return 0 if bit was previously clear and != 0 otherwise.
*/
static inline int test_and_set_bit(unsigned long nr, volatile unsigned long *addr)
{
unsigned long *ADDR, mask;
ADDR = ((unsigned long *) addr) + (nr >> 5);
mask = 1 << (nr & 31);
return ___set_bit(ADDR, mask) != 0;
}
static inline void set_bit(unsigned long nr, volatile unsigned long *addr)
{
unsigned long *ADDR, mask;
ADDR = ((unsigned long *) addr) + (nr >> 5);
mask = 1 << (nr & 31);
(void) ___set_bit(ADDR, mask);
}
static inline int test_and_clear_bit(unsigned long nr, volatile unsigned long *addr)
{
unsigned long *ADDR, mask;
ADDR = ((unsigned long *) addr) + (nr >> 5);
mask = 1 << (nr & 31);
return ___clear_bit(ADDR, mask) != 0;
}
static inline void clear_bit(unsigned long nr, volatile unsigned long *addr)
{
unsigned long *ADDR, mask;
ADDR = ((unsigned long *) addr) + (nr >> 5);
mask = 1 << (nr & 31);
(void) ___clear_bit(ADDR, mask);
}
static inline int test_and_change_bit(unsigned long nr, volatile unsigned long *addr)
{
unsigned long *ADDR, mask;
ADDR = ((unsigned long *) addr) + (nr >> 5);
mask = 1 << (nr & 31);
return ___change_bit(ADDR, mask) != 0;
}
static inline void change_bit(unsigned long nr, volatile unsigned long *addr)
{
unsigned long *ADDR, mask;
ADDR = ((unsigned long *) addr) + (nr >> 5);
mask = 1 << (nr & 31);
(void) ___change_bit(ADDR, mask);
}
#include <asm-generic/bitops/non-atomic.h>
#include <asm-generic/bitops/ffz.h>
#include <asm-generic/bitops/__ffs.h>
#include <asm-generic/bitops/sched.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>
#include <asm-generic/bitops/hweight.h>
#include <asm-generic/bitops/lock.h>
#include <asm-generic/bitops/find.h>
#include <asm-generic/bitops/le.h>
#include <asm-generic/bitops/ext2-atomic.h>
#endif /* __KERNEL__ */
#endif /* defined(_SPARC_BITOPS_H) */