Add test architecture

arch/test/src/lib.rs

@@ -0,0 +1,40 @@
+//! Architecture support for testing
+
+pub use std::io;
+
+/// Print to console
+#[macro_export]
+macro_rules! print {
+    ($($arg:tt)*) => ({
+        use $crate::io::Write;
+        let _ = write!($crate::io::stdout(), $($arg)*);
+    });
+}
+
+/// Print with new line to console
+#[macro_export]
+macro_rules! println {
+    ($fmt:expr) => (print!(concat!($fmt, "\n")));
+    ($fmt:expr, $($arg:tt)*) => (print!(concat!($fmt, "\n"), $($arg)*));
+}
+
+/// Create an interrupt function that can safely run rust code
+#[macro_export]
+macro_rules! interrupt {
+    ($name:ident, $func:block) => {
+        pub unsafe extern fn $name () {
+            unsafe fn inner() {
+                $func
+            }
+
+            // Call inner rust function
+            inner();
+        }
+    };
+}
+
+/// Interrupt instructions
+pub mod interrupt;
+
+/// Initialization and main function
+pub mod main;