dingusppc/cpu/ppc/ppcmmu.h

/*
DingusPPC - The Experimental PowerPC Macintosh emulator
Copyright (C) 2018-20 divingkatae and maximum
                      (theweirdo)     spatium

(Contact divingkatae#1017 or powermax#2286 on Discord for more info)

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <https://www.gnu.org/licenses/>.
*/

// 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 uint64_t mem_read_dbg(uint32_t virt_addr, uint32_t size);
extern uint8_t* quickinstruction_translate(uint32_t address_grab);

#endif // PPCMEMORY_H