e

E

src/system/kernel/serial.rs

@@ -24,6 +24,19 @@ pub fn _print(args: core::fmt::Arguments) {
 	})
 
 }
+pub fn serial_reply(chr: char) -> char {
+	use core::fmt::Write;
+	use x86_64::instructions::interrupts;
+
+	let mut chr_return: char = 'X';
+
+	interrupts::without_interrupts(|| {
+		SERIAL1.lock().send(chr as u8);
+		chr_return = SERIAL1.lock().receive() as char ;
+	});
+
+	chr_return
+}
 
 #[macro_export]
 macro_rules! serial_print {

src/system/std/io.rs

@@ -8,6 +8,7 @@ use alloc::vec::Vec;
 
 pub use crate::{print, println, serial_print, serial_println};
 pub use crate::kernel::render::Color;
+use crate::kernel::serial::serial_reply;
 
 use lazy_static::lazy_static;
 use spin::Mutex;
@@ -30,6 +31,14 @@ impl Stdin {
     }
 }
 
+pub struct Serial {}
+
+impl Serial {
+    pub fn reply_char(c: char) -> char {
+        serial_reply(c)
+    }
+}
+
 pub struct Screen {}
 impl Screen {
     pub fn terminal_mode() {