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/*
Copyright 2013 Michael Pavone
This file is part of BlastEm.
BlastEm is free software distributed under the terms of the GNU General Public License version 3 or greater. See COPYING for full license text.
*/
#ifndef M68K_CORE_H_
#define M68K_CORE_H_
#include <stdint.h>
#include <stdio.h>
#include "backend.h"
//#include "68kinst.h"
struct m68kinst;
#define NUM_MEM_AREAS 8
#define NATIVE_MAP_CHUNKS (64*1024)
#define NATIVE_CHUNK_SIZE ((16 * 1024 * 1024 / NATIVE_MAP_CHUNKS)/2)
#define MAX_NATIVE_SIZE 255
typedef void (*start_fun)(uint8_t * addr, void * context);
typedef struct {
cpu_options gen;
int8_t dregs[8];
int8_t aregs[8];
int8_t flag_regs[5];
FILE *address_log;
code_ptr read_16;
code_ptr write_16;
code_ptr read_8;
code_ptr write_8;
code_ptr read_32;
code_ptr write_32_lowfirst;
code_ptr write_32_highfirst;
code_ptr do_sync;
code_ptr trap;
code_ptr odd_address;
start_fun start_context;
code_ptr retrans_stub;
code_ptr native_addr;
code_ptr native_addr_and_sync;
code_ptr get_sr;
code_ptr set_sr;
code_ptr set_ccr;
} m68k_options;
typedef struct {
uint8_t flags[5];
uint8_t status;
uint16_t int_ack;
uint32_t dregs[8];
uint32_t aregs[9];
uint32_t target_cycle; //cycle at which the next synchronization or interrupt occurs
uint32_t current_cycle;
uint32_t sync_cycle;
uint32_t int_cycle;
uint32_t int_num;
uint16_t *mem_pointers[NUM_MEM_AREAS];
void *video_context;
uint16_t reserved;
native_map_slot *native_code_map;
m68k_options *options;
void *system;
uint8_t ram_code_flags[];
} m68k_context;
void translate_m68k(m68k_options * opts, struct m68kinst * inst);
void translate_m68k_stream(uint32_t address, m68k_context * context);
void start_68k_context(m68k_context * context, uint32_t address);
void init_m68k_opts(m68k_options * opts, memmap_chunk * memmap, uint32_t num_chunks, uint32_t clock_divider);
m68k_context * init_68k_context(m68k_options * opts);
void m68k_reset(m68k_context * context);
void insert_breakpoint(m68k_context * context, uint32_t address, uint8_t * bp_handler);
void remove_breakpoint(m68k_context * context, uint32_t address);
m68k_context * m68k_handle_code_write(uint32_t address, m68k_context * context);
uint32_t get_instruction_start(native_map_slot * native_code_map, uint32_t address);
#endif //M68K_CORE_H_
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