From 6c09097e5441eafc971c8d5d414963a4e66a892f Mon Sep 17 00:00:00 2001
From: Dennis Kobert <dennis@kobert.dev>
Date: Thu, 31 Oct 2019 21:06:46 +0100
Subject: Add testing to build

---
 kernel/src/io/serial.rs | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 kernel/src/io/serial.rs

(limited to 'kernel/src/io/serial.rs')

diff --git a/kernel/src/io/serial.rs b/kernel/src/io/serial.rs
new file mode 100644
index 0000000..bab770d
--- /dev/null
+++ b/kernel/src/io/serial.rs
@@ -0,0 +1,26 @@
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+#[repr(u32)]
+pub enum QemuExitCode {
+    Success = 0x10, // The actual exit code is (value << 1) | 1.
+    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);
+    }
+}
+
+#[test_case]
+fn trivial_assertion() {
+    use crate::vga_text::OStream;
+    let mut stdout = OStream::new();
+    stdout.clear();
+
+    stdout.print(b"trivial assertion... ");
+    assert_eq!(0, 1);
+    stdout.print(b"[ok]");
+}
-- 
cgit v1.2.3-70-g09d2