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|
use crate::io::{Audio, LoadSave, Serial};
use crate::logs::{elog, log, LogLevel};
use crate::state::GBState;
use std::fs::File;
use std::io::{Read, Write};
#[derive(Debug)]
pub struct FSLoadSave {
rom_file: String,
save_file: String,
state_file: Option<String>,
}
impl FSLoadSave {
pub fn new(rom_file: impl Into<String>, save_file: impl Into<String>) -> Self {
Self {
rom_file: rom_file.into(),
save_file: save_file.into(),
state_file: None,
}
}
pub fn state_file(mut self, state_file: impl Into<String>) -> Self {
self.state_file = Some(state_file.into());
self
}
}
impl LoadSave for FSLoadSave {
type Error = std::io::Error;
fn load_rom(&self, rom: &mut [u8]) -> Result<(), std::io::Error> {
let mut f = File::open(&self.rom_file)?;
f.read(rom)?;
return Ok(());
}
fn load_bootrom(&self, boot_rom: &mut [u8]) -> Result<(), std::io::Error> {
log(LogLevel::Debug, format!("MBC: {:02x}", boot_rom[0x147]));
log(LogLevel::Debug, format!("CGB: {:02x}", boot_rom[0x143]));
if boot_rom[0x143] == 0x80 || boot_rom[0x143] == 0xc0 {
unimplemented!("CGB Boot rom is not implemented");
// let bytes = include_bytes!("../assets/cgb_boot.bin");
// self.boot_rom[..0x900].copy_from_slice(bytes);
// self.cgb_mode = true;
// self.display.cgb_mode = true;
} else {
let bytes = include_bytes!("../../assets/dmg_boot.bin");
boot_rom[..0x100].copy_from_slice(bytes);
}
Ok(())
}
fn load_external_ram(&self, external_ram: &mut [u8]) -> Result<(), std::io::Error> {
let mut f = File::open(&self.save_file)?;
f.read(external_ram)?;
log(
LogLevel::Infos,
format!("Save file loaded from \"{}\"!", self.save_file),
);
Ok(())
}
fn save_external_ram(&self, external_ram: &[u8]) -> Result<(), std::io::Error> {
let mut f = File::create(&self.save_file)?;
f.write_all(&external_ram)?;
log(
LogLevel::Infos,
format!("Save written to \"{}\"!", self.save_file),
);
Ok(())
}
fn dump_state<S: Serial, A: Audio>(&self, state: &GBState<S, A>) -> Result<(), std::io::Error> {
{
let mut vram_dump_file = File::create(format!("{}.vram.dump", self.rom_file))?;
for addr in 0x8000..0xa000 {
vram_dump_file.write_all(format!("{:02X} ", state.mem.r(addr)).as_bytes())?;
}
}
{
let mut wram_dump_file = File::create(format!("{}.wram.dump", self.rom_file))?;
for addr in 0xc000..0xe000 {
wram_dump_file.write_all(format!("{:02X} ", state.mem.r(addr)).as_bytes())?;
}
}
{
let mut io_dump_file = File::create(format!("{}.io.dump", self.rom_file))?;
for addr in 0xff00..0xff80 {
io_dump_file.write_all(format!("{:02X} ", state.mem.r(addr)).as_bytes())?;
}
}
{
let mut hram_dump_file = File::create(format!("{}.hram.dump", self.rom_file))?;
for addr in 0xff80..=0xffff {
hram_dump_file.write_all(format!("{:02X} ", state.mem.r(addr)).as_bytes())?;
}
}
{
let mut cpu_dump_file = File::create(format!("{}.cpu.dump", self.rom_file))?;
for i in 0..8 {
cpu_dump_file.write_all(format!("{:02X} ", state.cpu.r[i]).as_bytes())?;
}
cpu_dump_file.write_all(format!("{:04X} ", state.cpu.pc).as_bytes())?;
cpu_dump_file.write_all(format!("{:04X} ", state.cpu.sp).as_bytes())?;
}
Ok(())
}
fn save_state<S: Serial, A: Audio>(&self, state: &GBState<S, A>) -> Result<(), std::io::Error> {
if let Some(state_file) = &self.state_file {
let mut state_file = File::create(state_file)?;
for addr in 0x8000..0xa000 {
state_file.write_all(&[state.mem.r(addr)])?;
}
state_file.write_all(state.mem.wram_00.as_ref())?;
state_file.write_all(state.mem.wram_01.as_ref())?;
for addr in 0xff00..0xff80 {
state_file.write_all(&[state.mem.r(addr)])?;
}
state_file.write_all(state.mem.hram.as_ref())?;
state_file.write_all(&[state.mem.interrupts_register])?;
state_file.write_all(&state.cpu.r)?;
state_file.write_all(&state.cpu.pc.to_le_bytes())?;
state_file.write_all(&state.cpu.sp.to_le_bytes())?;
state_file.write_all(&[state.mem.boot_rom_on.into(), state.mem.ime.into()])?;
} else {
elog(
LogLevel::Error,
format!("Tried to save state without state_file specified"),
);
}
Ok(())
}
fn load_state<S: Serial, A: Audio>(
&self,
state: &mut GBState<S, A>,
) -> Result<(), std::io::Error> {
if let Some(state_file) = &self.state_file {
let mut state_file = File::open(state_file)?;
let mut vram = Box::new([0; 0x2000]);
state_file.read_exact(vram.as_mut())?;
for i in 0x0000..0x2000 {
state.mem.w(0x8000 + i, vram[i as usize]);
}
state_file.read_exact(state.mem.wram_00.as_mut())?;
state_file.read_exact(state.mem.wram_01.as_mut())?;
let mut io = [0; 0x80];
state_file.read_exact(io.as_mut())?;
for i in 0x00..0x80 {
state.mem.w(0xff00 + i, io[i as usize]);
}
state_file.read_exact(state.mem.hram.as_mut())?;
let mut reg8 = [0; 1];
state_file.read_exact(reg8.as_mut())?;
state.mem.interrupts_register = reg8[0];
state_file.read_exact(&mut state.cpu.r)?;
let mut reg16 = [0; 2];
state_file.read_exact(&mut reg16)?;
state.cpu.pc = u16::from_le_bytes(reg16);
state_file.read_exact(&mut reg16)?;
state.cpu.sp = u16::from_le_bytes(reg16);
state_file.read_exact(reg8.as_mut())?;
state.mem.boot_rom_on = reg8[0] != 0;
state_file.read_exact(reg8.as_mut())?;
state.mem.ime = reg8[0] != 0;
}
Ok(())
}
}
|
