| 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239 | #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){	char *p = (char *)vaddr + (nr ^ 31) / 8;	__asm__ __volatile__ ("bclr %1,(%0)"		:		: "a" (p), "di" (nr & 7)		: "memory");}static inline void bclr_mem_clear_bit(int nr, volatile unsigned long *vaddr){	char *p = (char *)vaddr + (nr ^ 31) / 8;	__asm__ __volatile__ ("bclr %1,%0"		: "+m" (*p)		: "di" (nr & 7));}static inline void bfclr_mem_clear_bit(int nr, volatile unsigned long *vaddr){	__asm__ __volatile__ ("bfclr %1{%0:#1}"		:		: "d" (nr ^ 31), "o" (*vaddr)		: "memory");}#if defined(CONFIG_COLDFIRE)#define	clear_bit(nr, vaddr)	bclr_reg_clear_bit(nr, vaddr)#elif defined(CONFIG_CPU_HAS_NO_BITFIELDS)#define	clear_bit(nr, vaddr)	bclr_mem_clear_bit(nr, vaddr)#else#define clear_bit(nr, vaddr)	(__builtin_constant_p(nr) ? \				bclr_mem_clear_bit(nr, vaddr) : \				bfclr_mem_clear_bit(nr, vaddr))#endif#define __clear_bit(nr, vaddr)	clear_bit(nr, vaddr)static inline void bchg_reg_change_bit(int nr, volatile unsigned long *vaddr){	char *p = (char *)vaddr + (nr ^ 31) / 8;	__asm__ __volatile__ ("bchg %1,(%0)"		:		: "a" (p), "di" (nr & 7)		: "memory");}static inline void bchg_mem_change_bit(int nr, volatile unsigned long *vaddr){	char *p = (char *)vaddr + (nr ^ 31) / 8;	__asm__ __volatile__ ("bchg %1,%0"		: "+m" (*p)		: "di" (nr & 7));}static inline void bfchg_mem_change_bit(int nr, volatile unsigned long *vaddr){	__asm__ __volatile__ ("bfchg %1{%0:#1}"		:		: "d" (nr ^ 31), "o" (*vaddr)		: "memory");}#if defined(CONFIG_COLDFIRE)#define	change_bit(nr, vaddr)	bchg_reg_change_bit(nr, vaddr)#elif defined(CONFIG_CPU_HAS_NO_BITFIELDS)#define	change_bit(nr, vaddr)	bchg_mem_change_bit(nr, vaddr)#else#define change_bit(nr, vaddr)	(__builtin_constant_p(nr) ? \				bchg_mem_change_bit(nr, vaddr) : \				bfchg_mem_change_bit(nr, vaddr))#endif#define __change_bit(nr, vaddr)	change_bit(nr, vaddr)static inline int test_bit(int nr, const unsigned long *vaddr){	return (vaddr[nr >> 5] & (1UL << (nr & 31))) != 0;}static inline int bset_reg_test_and_set_bit(int nr,					    volatile unsigned long *vaddr){	char *p = (char *)vaddr + (nr ^ 31) / 8;	char retval;	__asm__ __volatile__ ("bset %2,(%1); sne %0"		: "=d" (retval)		: "a" (p), "di" (nr & 7)		: "memory");	return retval;}static inline int bset_mem_test_and_set_bit(int nr,					    volatile unsigned long *vaddr){	char *p = (char *)vaddr + (nr ^ 31) / 8;	char retval;	__asm__ __volatile__ ("bset %2,%1; sne %0"		: "=d" (retval), "+m" (*p)		: "di" (nr & 7));	return retval;}static inline int bfset_mem_test_and_set_bit(int nr,					     volatile unsigned long *vaddr){	char retval;	__asm__ __volatile__ ("bfset %2{%1:#1}; sne %0"		: "=d" (retval)		: "d" (nr ^ 31), "o" (*vaddr)		: "memory");	return retval;}#if defined(CONFIG_COLDFIRE)#define	test_and_set_bit(nr, vaddr)	bset_reg_test_and_set_bit(nr, vaddr)#elif defined(CONFIG_CPU_HAS_NO_BITFIELDS)#define	test_and_set_bit(nr, vaddr)	bset_mem_test_and_set_bit(nr, vaddr)#else#define test_and_set_bit(nr, vaddr)	(__builtin_constant_p(nr) ? \					bset_mem_test_and_set_bit(nr, vaddr) : \					bfset_mem_test_and_set_bit(nr, vaddr))#endif#define __test_and_set_bit(nr, vaddr)	test_and_set_bit(nr, vaddr)static inline int bclr_reg_test_and_clear_bit(int nr,					      volatile unsigned long *vaddr){	char *p = (char *)vaddr + (nr ^ 31) / 8;	char retval;	__asm__ __volatile__ ("bclr %2,(%1); sne %0"		: "=d" (retval)		: "a" (p), "di" (nr & 7)		: "memory");	return retval;}static inline int bclr_mem_test_and_clear_bit(int nr,					      volatile unsigned long *vaddr){	char *p = (char *)vaddr + (nr ^ 31) / 8;	char retval;	__asm__ __volatile__ ("bclr %2,%1; sne %0"		: "=d" (retval), "+m" (*p)		: "di" (nr & 7));	return retval;}static inline int bfclr_mem_test_and_clear_bit(int nr,					       volatile unsigned long *vaddr){
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