add: console log support

os/src/console.rs

@@ -31,3 +31,38 @@ macro_rules! println {
         $crate::console::print(format_args!(concat!($fmt, "\n") $(, $($arg)+)?));
     }
 }
+
+#[macro_export]
+macro_rules! log_error {
+    ($fmt: literal $(, $($arg: tt)+)?) => {
+        $crate::console::print(format_args!(concat!("\x1b[31m" ,concat!($fmt, "\x1b[0m\n")) $(, $($arg)+)?));
+    }
+}
+
+#[macro_export]
+macro_rules! log_warning {
+    ($fmt: literal $(, $($arg: tt)+)?) => {
+        $crate::console::print(format_args!(concat!("\x1b[93m" ,concat!($fmt, "\x1b[0m\n")) $(, $($arg)+)?));
+    }
+}
+
+#[macro_export]
+macro_rules! log_information {
+    ($fmt: literal $(, $($arg: tt)+)?) => {
+        $crate::console::print(format_args!(concat!("\x1b[34m" ,concat!($fmt, "\x1b[0m\n")) $(, $($arg)+)?));
+    }
+}
+
+#[macro_export]
+macro_rules! log_debug {
+    ($fmt: literal $(, $($arg: tt)+)?) => {
+        $crate::console::print(format_args!(concat!("\x1b[32m" ,concat!($fmt, "\x1b[0m\n")) $(, $($arg)+)?));
+    }
+}
+
+#[macro_export]
+macro_rules! log_trace {
+    ($fmt: literal $(, $($arg: tt)+)?) => {
+        $crate::console::print(format_args!(concat!("\x1b[90m" ,concat!($fmt, "\x1b[0m\n")) $(, $($arg)+)?));
+    }
+}

os/src/main.rs

@@ -13,7 +13,11 @@ global_asm!(include_str!("entry.asm"));
 #[no_mangle]
 fn rust_main() -> ! {
     clear_bss();
-    println!("Hello, rCore!");
+    log_error!("Hello, rCore!");
+    log_warning!("Hello, rCore!");
+    log_information!("Hello, rCore!");
+    log_debug!("Hello, rCore!");
+    log_trace!("Hello, rCore!");
     sbi::shutdown(false);
 }