add rust kernel stub

1 files changed, 20 insertions, 0 deletions

diff --git a/src/lib.rs b/src/lib.rs
new file mode 100644
index 0000000..c6cb39e
--- /dev/null
+++ b/src/lib.rs
@@ -0,0 +1,20 @@
+#![no_std]
+#![no_main]
+
+use core::panic::PanicInfo;
+
+#[unsafe(no_mangle)]
+pub extern "C" fn _start() -> ! {
+    // 'k'
+    loop{unsafe {core::arch::asm!(
+        "out dx, al", in("al") 0x6Bu8
+    )}}
+}
+
+#[panic_handler]
+fn panic(_: &PanicInfo) -> ! {
+    // 'p'
+    loop{unsafe {core::arch::asm!(
+        "out dx, al", in("al") 0x70u8
+    )}}
+}