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							- #ifndef _M68K_BITOPS_H
 
- #define _M68K_BITOPS_H
 
- /*
 
-  * Copyright 1992, Linus Torvalds.
 
-  *
 
-  * This file is subject to the terms and conditions of the GNU General Public
 
-  * License.  See the file COPYING in the main directory of this archive
 
-  * for more details.
 
-  */
 
- #ifndef _LINUX_BITOPS_H
 
- #error only <linux/bitops.h> can be included directly
 
- #endif
 
- #include <linux/compiler.h>
 
- /*
 
-  *	Bit access functions vary across the ColdFire and 68k families.
 
-  *	So we will break them out here, and then macro in the ones we want.
 
-  *
 
-  *	ColdFire - supports standard bset/bclr/bchg with register operand only
 
-  *	68000    - supports standard bset/bclr/bchg with memory operand
 
-  *	>= 68020 - also supports the bfset/bfclr/bfchg instructions
 
-  *
 
-  *	Although it is possible to use only the bset/bclr/bchg with register
 
-  *	operands on all platforms you end up with larger generated code.
 
-  *	So we use the best form possible on a given platform.
 
-  */
 
- static inline void bset_reg_set_bit(int nr, volatile unsigned long *vaddr)
 
- {
 
- 	char *p = (char *)vaddr + (nr ^ 31) / 8;
 
- 	__asm__ __volatile__ ("bset %1,(%0)"
 
- 		:
 
- 		: "a" (p), "di" (nr & 7)
 
- 		: "memory");
 
- }
 
- static inline void bset_mem_set_bit(int nr, volatile unsigned long *vaddr)
 
- {
 
- 	char *p = (char *)vaddr + (nr ^ 31) / 8;
 
- 	__asm__ __volatile__ ("bset %1,%0"
 
- 		: "+m" (*p)
 
- 		: "di" (nr & 7));
 
- }
 
- static inline void bfset_mem_set_bit(int nr, volatile unsigned long *vaddr)
 
- {
 
- 	__asm__ __volatile__ ("bfset %1{%0:#1}"
 
- 		:
 
- 		: "d" (nr ^ 31), "o" (*vaddr)
 
- 		: "memory");
 
- }
 
- #if defined(CONFIG_COLDFIRE)
 
- #define	set_bit(nr, vaddr)	bset_reg_set_bit(nr, vaddr)
 
- #elif defined(CONFIG_CPU_HAS_NO_BITFIELDS)
 
- #define	set_bit(nr, vaddr)	bset_mem_set_bit(nr, vaddr)
 
- #else
 
- #define set_bit(nr, vaddr)	(__builtin_constant_p(nr) ? \
 
- 				bset_mem_set_bit(nr, vaddr) : \
 
- 				bfset_mem_set_bit(nr, vaddr))
 
- #endif
 
- #define __set_bit(nr, vaddr)	set_bit(nr, vaddr)
 
- /*
 
-  * 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 void bclr_reg_clear_bit(int nr, volatile unsigned long *vaddr)
 
- {
 
 
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