tmp: panic message

kernel/src/main.rs

@@ -26,28 +26,9 @@ pub mod mem;
 pub mod sync;
 pub mod util;
 
-use core::fmt::{Write, self};
-struct DummyUart;
-
-impl Write for DummyUart {
-    fn write_str(&mut self, s: &str) -> fmt::Result {
-        for b in s.bytes() {
-            unsafe {
-                core::ptr::write_volatile(0xFFFFFFC000000000 as *mut u32, b as u32);
-                for _ in 0..100000 {
-                    asm!("nop");
-                }
-            }
-        }
-        Ok(())
-    }
-}
-
 #[panic_handler]
 fn panic_handler(pi: &core::panic::PanicInfo) -> ! {
-    let mut u = DummyUart;
-    write!(&mut u, "Panic occurred!\r\n");
-    write!(&mut u, "{:?}", pi);
+    debugln!("Panic: {:?}", pi);
     // TODO
     loop {}
 }