Remove the shim kernel crate

kernel/src/console.rs

@@ -0,0 +1,43 @@
+// SPDX-License-Identifier: MPL-2.0
+
+//! `print` and `println` macros
+//!
+//! FIXME: It will print to all `virtio-console` devices, which is not a good choice.
+//!
+
+use core::fmt::{Arguments, Write};
+
+struct VirtioConsolesPrinter;
+
+impl Write for VirtioConsolesPrinter {
+    fn write_str(&mut self, s: &str) -> core::fmt::Result {
+        for (_, device) in aster_console::all_devices() {
+            device.send(s.as_bytes());
+        }
+        Ok(())
+    }
+}
+
+/// Prints the formatted arguments to the standard output.
+pub fn _print(args: Arguments) {
+    VirtioConsolesPrinter.write_fmt(args).unwrap();
+}
+
+/// Copied from Rust std: <https://github.com/rust-lang/rust/blob/master/library/std/src/macros.rs>
+#[macro_export]
+macro_rules! print {
+    ($($arg:tt)*) => {{
+        $crate::console::_print(format_args!($($arg)*));
+    }};
+}
+
+/// Copied from Rust std: <https://github.com/rust-lang/rust/blob/master/library/std/src/macros.rs>
+#[macro_export]
+macro_rules! println {
+    () => {
+        $crate::print!("\n")
+    };
+    ($($arg:tt)*) => {{
+        $crate::console::_print(format_args_nl!($($arg)*));
+    }};
+}