Add println!

src/main.rs

@@ -11,10 +11,13 @@ fn panic(_info: &PanicInfo) -> ! {
 }
 
 #[no_mangle]
-pub extern "C" fn _start() -> ! {
-    use core::fmt::Write;
-    vga_buffer::WRITER.lock().write_str("Hello there\n").unwrap();
-    writeln!(vga_buffer::WRITER.lock(), "General Kenobi").unwrap();
+pub extern "C" fn _start() {
+    println!("Hello there{}", "!");
+    println!();
+    println!("General Kenobi!");
+    println!();
+    println!("You are a bold one");
+
 
     loop {}
 }

src/vga_buffer.rs

@@ -128,3 +128,19 @@ lazy_static! {
     });
 }
 
+#[macro_export]
+macro_rules! print {
+    ($($arg:tt)*) => ($crate::vga_buffer::_print(format_args!($($arg)*)));
+}
+
+#[macro_export]
+macro_rules! println {
+    () => ($crate::print!("\n"));
+    ($($arg:tt)*) => ($crate::print!("{}\n", format_args!($($arg)*)));
+}
+
+#[doc(hidden)]
+pub fn _print(args: fmt::Arguments) {
+    use core::fmt::Write;
+    WRITER.lock().write_fmt(args).unwrap();
+}