rb.h

模拟嵌入式硬件平台的软件源代码

#ifndef _MMU_RB_H
#define _MMU_RB_H

enum rb_type_t{
	RB_INVALID = 0,	//invalid
	RB_1,	//1	word
	RB_4,	//4 word
	RB_8,	//8 word
};

/*bytes of each rb_type*/
extern ARMword rb_masks[];

#define RB_WORD_NUM 8
typedef struct rb_entry_s{
	ARMword	data[RB_WORD_NUM];//array to store data
	ARMword	va;		//first word va
	int		type;	//rb type
	fault_t	fault;	//fault set by rb alloc
}rb_entry_t;

typedef struct rb_s{
	int num;
	rb_entry_t *entrys;
}rb_t;

/*mmu_rb_init
 * @rb_t	:rb_t to init
 * @num		:number of entry
 * */
int
mmu_rb_init(rb_t *rb_t, int num);

/*mmu_rb_exit*/
void
mmu_rb_exit(rb_t *rb_t);


/*mmu_rb_search
 * @rb_t	:rb_t to serach
 * @va		:va address to math
 *
 * $	NULL :not match
 * 		NO-NULL:
 * */
rb_entry_t *
mmu_rb_search(rb_t *rb_t, ARMword va);


void mmu_rb_invalidate_entry(rb_t *rb_t, int i);
void mmu_rb_invalidate_all(rb_t *rb_t);
void mmu_rb_load(ARMul_State *state, rb_t *rb_t, int i_rb,
				int type, ARMword va);

#endif /*_MMU_RB_H_*/