/* bitops.h: bit operations for the Fujitsu FR-V CPUs * * For an explanation of how atomic ops work in this arch, see: *   Documentation/fujitsu/frv/atomic-ops.txt * * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. */#ifndef _ASM_BITOPS_H#define _ASM_BITOPS_H #include <linux/compiler.h>#include <asm/byteorder.h>#include <asm/system.h>#include <asm/atomic.h> #ifdef __KERNEL__ #include <asm-generic/bitops/ffz.h> /* * clear_bit() doesn't provide any barrier for the compiler. */#define smp_mb__before_clear_bit()	barrier()#define smp_mb__after_clear_bit()	barrier() static inline int test_and_clear_bit(int nr, volatile void *addr){	volatile unsigned long *ptr = addr;	unsigned long mask = 1UL << (nr & 31);	ptr += nr >> 5;	return (atomic_test_and_ANDNOT_mask(mask, ptr) & mask) != 0;} static inline int test_and_set_bit(int nr, volatile void *addr){	volatile unsigned long *ptr = addr;	unsigned long mask = 1UL << (nr & 31);	ptr += nr >> 5;	return (atomic_test_and_OR_mask(mask, ptr) & mask) != 0;} static inline int test_and_change_bit(int nr, volatile void *addr){	volatile unsigned long *ptr = addr;	unsigned long mask = 1UL << (nr & 31);	ptr += nr >> 5;	return (atomic_test_and_XOR_mask(mask, ptr) & mask) != 0;} static inline void clear_bit(int nr, volatile void *addr){	test_and_clear_bit(nr, addr);} static inline void set_bit(int nr, volatile void *addr){	test_and_set_bit(nr, addr);} static inline void change_bit(int nr, volatile void * addr){	test_and_change_bit(nr, addr);} static inline void __clear_bit(int nr, volatile void * addr){	volatile unsigned long *a = addr;	int mask; 	a += nr >> 5;	mask = 1 << (nr & 31);	*a &= ~mask;} static inline void __set_bit(int nr, volatile void * addr){	volatile unsigned long *a = addr;	int mask; 	a += nr >> 5;	mask = 1 << (nr & 31);	*a |= mask;} static inline void __change_bit(int nr, volatile void *addr){	volatile unsigned long *a = addr;	int mask; 	a += nr >> 5;	mask = 1 << (nr & 31);	*a ^= mask;} static inline int __test_and_clear_bit(int nr, volatile void * addr){	volatile unsigned long *a = addr;	int mask, retval; 	a += nr >> 5;	mask = 1 << (nr & 31);	retval = (mask & *a) != 0;	*a &= ~mask;	return retval;} static inline int __test_and_set_bit(int nr, volatile void * addr){	volatile unsigned long *a = addr;	int mask, retval; 	a += nr >> 5;	mask = 1 << (nr & 31);	retval = (mask & *a) != 0;	*a |= mask;	return retval;} static inline int __test_and_change_bit(int nr, volatile void * addr){	volatile unsigned long *a = addr;	int mask, retval; 	a += nr >> 5;	mask = 1 << (nr & 31);	retval = (mask & *a) != 0;	*a ^= mask;	return retval;} /* * This routine doesn't need to be atomic. */static inline int __constant_test_bit(int nr, const volatile void * addr){	return ((1UL << (nr & 31)) & (((const volatile unsigned int *) addr)[nr >> 5])) != 0;} static inline int __test_bit(int nr, const volatile void * addr){	int 	* a = (int *) addr;	int	mask; 	a += nr >> 5;	mask = 1 << (nr & 0x1f);	return ((mask & *a) != 0);} #define test_bit(nr,addr) \(__builtin_constant_p(nr) ? \ __constant_test_bit((nr),(addr)) : \ __test_bit((nr),(addr))) #include <asm-generic/bitops/ffs.h>#include <asm-generic/bitops/__ffs.h>#include <asm-generic/bitops/find.h> /* * fls: find last bit set. */#define fls(x)						\({							\	int bit;					\							\	asm("scan %1,gr0,%0" : "=r"(bit) : "r"(x));	\							\	bit ? 33 - bit : bit;				\}) #include <asm-generic/bitops/fls64.h>#include <asm-generic/bitops/sched.h>#include <asm-generic/bitops/hweight.h> #include <asm-generic/bitops/ext2-non-atomic.h> #define ext2_set_bit_atomic(lock,nr,addr)	test_and_set_bit  ((nr) ^ 0x18, (addr))#define ext2_clear_bit_atomic(lock,nr,addr)	test_and_clear_bit((nr) ^ 0x18, (addr)) #include <asm-generic/bitops/minix-le.h> #endif /* __KERNEL__ */ #endif /* _ASM_BITOPS_H */