Split off a library

src/lib.rs

@@ -0,0 +1,55 @@
+#![no_std]
+#![cfg_attr(test, no_main)]
+#![feature(custom_test_frameworks)]
+#![test_runner(crate::test_runner)]
+#![reexport_test_harness_main = "test_main"]
+
+use core::panic::PanicInfo;
+
+pub mod serial;
+pub mod vga_buffer;
+
+pub fn test_runner(tests: &[&dyn Fn()]) {
+    serial_println!("Running {} tests", tests.len());
+    for test in tests {
+        test();
+    }
+    unsafe { exit_qemu(QemuExitCode::Success) };
+}
+
+pub fn test_panic_handler(info: &PanicInfo) -> ! {
+    serial_println!("[failed]\n");
+    serial_println!("Error: {}\n", info);
+    unsafe {
+        exit_qemu(QemuExitCode::Failed);
+    }
+    loop {}
+}
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+#[repr(u32)]
+pub enum QemuExitCode {
+    Success = 0x10,
+    Failed = 0x11,
+}
+
+pub unsafe fn exit_qemu(exit_code: QemuExitCode) {
+    use x86_64::instructions::port::Port;
+
+    let mut port = Port::new(0xf4);
+    port.write(exit_code as u32);
+}
+
+/// Entry point for `cargo xtest`
+#[cfg(test)]
+#[no_mangle]
+pub extern "C" fn _start() -> ! {
+    test_main();
+    loop {}
+}
+
+#[cfg(test)]
+#[panic_handler]
+fn panic(info: &PanicInfo) -> ! {
+    test_panic_handler(info)
+}

src/main.rs

@@ -1,14 +1,12 @@
 #![no_std]
 #![no_main]
 #![feature(custom_test_frameworks)]
-#![test_runner(crate::test_runner)]
+#![test_runner(blog_os::test_runner)]
 #![reexport_test_harness_main = "test_main"]
 
+use blog_os::println;
 use core::panic::PanicInfo;
 
-mod serial;
-mod vga_buffer;
-
 #[no_mangle]
 pub extern "C" fn _start() -> ! {
     println!("Hello World{}", "!");
@@ -19,15 +17,6 @@ pub extern "C" fn _start() -> ! {
     loop {}
 }
 
-#[cfg(test)]
-fn test_runner(tests: &[&dyn Fn()]) {
-    serial_println!("Running {} tests", tests.len());
-    for test in tests {
-        test();
-    }
-    unsafe { exit_qemu(QemuExitCode::Success) };
-}
-
 /// This function is called on panic.
 #[cfg(not(test))]
 #[panic_handler]
@@ -39,24 +28,5 @@ fn panic(info: &PanicInfo) -> ! {
 #[cfg(test)]
 #[panic_handler]
 fn panic(info: &PanicInfo) -> ! {
-    serial_println!("[failed]\n");
+    blog_os::test_panic_handler(info)
-    serial_println!("Error: {}\n", info);
-    unsafe {
-        exit_qemu(QemuExitCode::Failed);
-    }
-    loop {}
-}
-
-#[derive(Debug, Clone, Copy, PartialEq, Eq)]
-#[repr(u32)]
-pub enum QemuExitCode {
-    Success = 0x10,
-    Failed = 0x11,
-}
-
-pub unsafe fn exit_qemu(exit_code: QemuExitCode) {
-    use x86_64::instructions::port::Port;
-
-    let mut port = Port::new(0xf4);
-    port.write(exit_code as u32);
 }