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clean up compare

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This commit is contained in:
Logan McNaughton 2023-10-10 21:31:04 -06:00
parent 43f86bf5bf
commit e4f4d6a9ae
1 changed files with 11 additions and 8 deletions
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19
src/device/cop0.rs
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@ -201,15 +201,18 @@ pub fn set_control_registers(device: &mut device::Device, index: u32, mut data:
COP0_COMPARE_REG => {
data &= 0xFFFFFFFF;
let current_count = (device.cpu.cop0.regs[COP0_COUNT_REG as usize] >> 1) & 0xFFFFFFFF;
let mut compare_event_time =
(device.cpu.cop0.regs[COP0_COUNT_REG as usize] & 0xFFFFFFFF00000000) + (data << 1);
if current_count >= data {
compare_event_time += !0 as u32 as u64
let mut compare_event_diff = data as u32 - current_count as u32;
if compare_event_diff == 0 {
compare_event_diff += !0 as u32;
}
let compare_event: &mut device::events::Event =
device::events::get_event(device, device::events::EventType::Compare).unwrap();
compare_event.count = compare_event_time; // reschedule the next compare interrupt event
device::events::set_next_event(device);
device::events::create_event(
device,
device::events::EventType::Compare,
device.cpu.cop0.regs[COP0_COUNT_REG as usize] + ((compare_event_diff as u64) << 1),
compare_event,
);
device.cpu.cop0.regs[COP0_CAUSE_REG as usize] &= !COP0_CAUSE_IP7;
}
COP0_STATUS_REG => {