From 34283780c0e2eaf57f70254049c8a480393e0c9f Mon Sep 17 00:00:00 2001
From: Noah Knegt <git@noahknegt.com>
Date: Tue, 22 Jul 2025 20:03:01 +0200
Subject: [PATCH] Create Qemu helpers

Signed-off-by: Noah Knegt <git@noahknegt.com>
---
 kernel/src/qemu.rs | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
 create mode 100644 kernel/src/qemu.rs

diff --git a/kernel/src/qemu.rs b/kernel/src/qemu.rs
new file mode 100644
index 0000000..5f9f6b0
--- /dev/null
+++ b/kernel/src/qemu.rs
@@ -0,0 +1,15 @@
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+#[repr(u32)]
+pub enum QemuExitCode {
+    Success = 0x10,
+    Failed = 0x11,
+}
+
+pub fn exit_qemu(exit_code: QemuExitCode) {
+    use x86_64::instructions::port::Port;
+
+    unsafe {
+        let mut port = Port::new(0xf4);
+        port.write(exit_code as u32);
+    }
+}