45 lines
1.3 KiB
Rust
45 lines
1.3 KiB
Rust
use std::fs::File;
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use std::io::{Read, Write};
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use std::mem;
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use std::thread;
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use keymap;
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pub fn keyboard() {
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let mut file = File::open("irq:1").expect("ps2d: failed to open irq:1");
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let mut input = File::open("display:input").expect("ps2d: failed to open display:input");
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let mut lshift = false;
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let mut rshift = false;
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loop {
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let mut irqs = [0; 8];
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if file.read(&mut irqs).expect("ps2d: failed to read irq:1") >= mem::size_of::<usize>() {
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let data: u8;
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unsafe {
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asm!("in al, dx" : "={al}"(data) : "{dx}"(0x60) : : "intel", "volatile");
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}
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file.write(&irqs).expect("ps2d: failed to write irq:1");
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let (scancode, pressed) = if data >= 0x80 {
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(data - 0x80, false)
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} else {
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(data, true)
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};
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if scancode == 0x2A {
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lshift = pressed;
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} else if scancode == 0x36 {
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rshift = pressed;
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} else if pressed {
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let c = keymap::get_char(scancode, lshift || rshift);
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if c != '\0' {
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input.write(&[c as u8]).expect("ps2d: failed to write input");
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}
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}
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} else {
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thread::yield_now();
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}
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}
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}
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