Move arch to seperate crate

kernel/panic.rs

@@ -0,0 +1,25 @@
+//! Intrinsics for panic handling
+
+use arch::interrupt::halt;
+
+#[cfg(not(test))]
+#[lang = "eh_personality"]
+extern "C" fn eh_personality() {}
+
+#[cfg(not(test))]
+/// Required to handle panics
+#[lang = "panic_fmt"]
+extern "C" fn panic_fmt() -> ! {
+    loop {
+        unsafe { halt() };
+    }
+}
+
+#[allow(non_snake_case)]
+#[no_mangle]
+/// Required to handle panics
+pub extern "C" fn _Unwind_Resume() -> ! {
+    loop {
+        unsafe { halt() }
+    }
+}