dingusppc/cpu/ppc/ppcmmu.h

//DingusPPC
//Written by divingkatae and maximum
//(c)2018-20 (theweirdo)     spatium
//Please ask for permission
//if you want to distribute this.
//(divingkatae#1017 or powermax#2286 on Discord)

// The opcodes for the processor - ppcopcodes.cpp

#ifndef PPCMEMORY_H
#define PPCMEMORY_H

#include <cinttypes>
#include <vector>
#include <array>

/* Uncomment this to exhaustive MMU integrity checks. */
//#define MMU_INTEGRITY_CHECKS

/** generic PowerPC BAT descriptor (MMU internal state) */
typedef struct PPC_BAT_entry {
    uint8_t     access;   /* copy of Vs | Vp bits */
    uint8_t     prot;     /* copy of PP bits */
    uint32_t    phys_hi;  /* high-order bits for physical address generation */
    uint32_t    lo_mask;  /* mask for low-order logical address bits */
    uint32_t    bepi;     /* copy of Block effective page index */
} PPC_BAT_entry;


extern void ibat_update(uint32_t bat_reg);
extern void dbat_update(uint32_t bat_reg);

extern void ppc_set_cur_instruction(const uint8_t* ptr);
extern void mem_write_byte(uint32_t addr, uint8_t value);
extern void mem_write_word(uint32_t addr, uint16_t value);
extern void mem_write_dword(uint32_t addr, uint32_t value);
extern void mem_write_qword(uint32_t addr, uint64_t value);
extern uint8_t  mem_grab_byte(uint32_t addr);
extern uint16_t mem_grab_word(uint32_t addr);
extern uint32_t mem_grab_dword(uint32_t addr);
extern uint64_t mem_grab_qword(uint32_t addr);
extern uint8_t* quickinstruction_translate(uint32_t address_grab);

#endif // PPCMEMORY_H