1 files changed, 70 insertions, 0 deletions
diff --git a/src/cpu/boot.rs b/src/cpu/boot.rs
new file mode 100644
index 0000000..5c38427
--- /dev/null
+++ b/src/cpu/boot.rs
@@ -0,0 +1,70 @@
+/*
+	Copyright 2021-2023 Gabriel Jensen.
+
+	This file is part of Luma.
+
+	Luma is free software: you can redistribute it
+	and/or modify it under the terms of the GNU
+	Affero General Public License as published by
+	the Free Software Foundation, either version 3
+	of the License, or (at your option) any later
+	version.
+
+	Luma 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
+	Affero General Public License for more details.
+
+	You should have received a copy of the GNU
+	Affero General Public License along with Luma.
+	If not, see <https://www.gnu.org/licenses/>.
+*/
+
+use crate::{log, log_status};
+use crate::cpu::Cpu;
+use crate::cpu_handle::CpuHandle;
+
+use std::sync::atomic::Ordering;
+use std::thread::{sleep, spawn};
+use std::time::{Duration, Instant};
+
+impl Cpu {
+	pub fn boot(self) -> CpuHandle {
+		eprintln!("starting emulation at {:#010X}", self.state.lock().unwrap().read_register(0xF).wrapping_sub(0x8));
+
+		let state = self.state.clone();
+		let dead  = self.dead.clone();
+
+		let handle = spawn(move || { self.run() });
+
+		return CpuHandle::new(
+			state,
+			dead,
+
+			handle,
+		);
+	}
+
+	fn run(mut self) {
+		let run_timer = Instant::now();
+
+		'main_loop: loop {
+			if self.dead.load(Ordering::Relaxed) { break 'main_loop };
+
+			let (instruction, predicate, cpsr) = self.fetch();
+			match predicate.test(cpsr) {
+				false => log_status!("skipping due to predicate ({})", predicate.code()),
+				true  => self.execute(instruction),
+			};
+			self.r#continue();
+
+			if cfg!(debug_assertions) { sleep(Duration::from_millis(125)) };
+
+			self.cycle += 0x1;
+		}
+
+		let frequency = self.cycle as f64 / run_timer.elapsed().as_micros() as f64;
+		eprintln!("emulated {} cycle(s) ({frequency:.9} MHz)", self.cycle);
+	}
+}