path: root/src/core/arm/interpreter/mmu/rb.h

#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_s;

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

/*mmu_rb_exit*/
void mmu_rb_exit (rb_s * 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_s * rb_t, ARMword va);


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

#endif /*_MMU_RB_H_*/