starry-kernel 0.5.9

A Linux-compatible OS kernel built on ArceOS unikernel
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44

use alloc::{boxed::Box, sync::Arc};

use ax_task::future::register_irq_waker;
use lazy_static::lazy_static;

use super::{
    Tty,
    terminal::ldisc::{ProcessMode, TtyConfig, TtyRead, TtyWrite},
};

pub type NTtyDriver = Tty<Console, Console>;

#[derive(Clone, Copy)]
pub struct Console;
impl TtyRead for Console {
    fn read(&mut self, buf: &mut [u8]) -> usize {
        ax_hal::console::read_bytes(buf)
    }
}
impl TtyWrite for Console {
    fn write(&self, buf: &[u8]) {
        ax_hal::console::write_bytes(buf);
    }
}

lazy_static! {
    /// The default TTY device.
    pub static ref N_TTY: Arc<NTtyDriver> = new_n_tty();
}

fn new_n_tty() -> Arc<NTtyDriver> {
    Tty::new(
        Arc::default(),
        TtyConfig {
            reader: Console,
            writer: Console,
            process_mode: if let Some(irq) = ax_hal::console::irq_num() {
                ProcessMode::External(Box::new(move |waker| register_irq_waker(irq, &waker)) as _)
            } else {
                ProcessMode::Manual
            },
        },
    )
}