#![no_std]
#![no_main]
#![feature(custom_test_frameworks)]
#![test_runner(rustos::test_runner)]
#![reexport_test_harness_main = "test_main"]
#![feature(abi_x86_interrupt)]
extern crate rustos;
extern crate x86_64;
use core::panic::PanicInfo;
use rustos::{print, println};
#[no_mangle]
pub extern "C" fn _start() -> ! {
println!("Welcome to the real world!");
init();
#[cfg(test)]
test_main();
println!("It did not crash!!!");
loop {
x86_64::instructions::hlt();
}
}
#[cfg(not(test))]
#[panic_handler]
fn panic(info: &PanicInfo) -> ! {
println!("{}", info);
loop {
x86_64::instructions::hlt();
}
}
#[cfg(test)]
#[panic_handler]
fn panic(info: &PanicInfo) -> ! {
rustos::test_panic_handler(info)
}
extern crate lazy_static;
extern crate pc_keyboard;
extern crate pic8259_simple;
extern crate spin;
use lazy_static::lazy_static;
use pic8259_simple::ChainedPics;
use spin::Mutex;
use x86_64::structures::idt::{InterruptDescriptorTable, InterruptStackFrame};
fn init() {
IDT.load();
unsafe { PICS.lock().initialize() };
x86_64::instructions::interrupts::enable();
}
lazy_static! {
static ref IDT: InterruptDescriptorTable = {
let mut idt = InterruptDescriptorTable::new();
idt[InterruptIndex::Timer.as_usize()].set_handler_fn(timer_interrupt_handler);
idt[InterruptIndex::Keyboard.as_usize()].set_handler_fn(keyboard_interrupt_handler);
idt
};
}
extern "x86-interrupt" fn timer_interrupt_handler(_stack_frame: &mut InterruptStackFrame) {
print!(".");
unsafe {
PICS.lock()
.notify_end_of_interrupt(InterruptIndex::Timer.as_u8());
}
}
extern "x86-interrupt" fn keyboard_interrupt_handler(_stack_frame: &mut InterruptStackFrame) {
use pc_keyboard::{layouts, DecodedKey, HandleControl, Keyboard, ScancodeSet1};
use x86_64::instructions::port::Port;
lazy_static! {
static ref KEYBOARD: Mutex<Keyboard<layouts::Us104Key, ScancodeSet1>> = Mutex::new(
Keyboard::new(layouts::Us104Key, ScancodeSet1, HandleControl::Ignore),
);
}
let mut keyboard = KEYBOARD.lock();
let mut port = Port::new(0x60);
let scancode: u8 = unsafe { port.read() };
if let Ok(Some(key_event)) = keyboard.add_byte(scancode) {
if let Some(key) = keyboard.process_keyevent(key_event) {
match key {
DecodedKey::Unicode(character) => print!("{}", character),
DecodedKey::RawKey(key) => print!("{:?}", key),
}
}
}
unsafe {
PICS.lock()
.notify_end_of_interrupt(InterruptIndex::Keyboard.as_u8());
}
}
#[allow(dead_code)]
extern "x86-interrupt" fn tenkey_interrupt_handler(_stack_frame: &mut InterruptStackFrame) {
use x86_64::instructions::port::Port;
let mut port = Port::new(0x60);
let scancode: u8 = unsafe { port.read() };
let key = match scancode {
0x02 => Some('1'),
0x03 => Some('2'),
0x04 => Some('3'),
0x05 => Some('4'),
0x06 => Some('5'),
0x07 => Some('6'),
0x08 => Some('7'),
0x09 => Some('8'),
0x0a => Some('9'),
0x0b => Some('0'),
_ => None,
};
if let Some(key) = key {
print!("{}", key);
}
unsafe {
PICS.lock()
.notify_end_of_interrupt(InterruptIndex::Keyboard.as_u8());
}
}
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
#[repr(u8)]
enum InterruptIndex {
Timer = PIC_1_OFFSET,
Keyboard,
}
impl InterruptIndex {
fn as_u8(self) -> u8 {
self as u8
}
fn as_usize(self) -> usize {
usize::from(self.as_u8())
}
}
const PIC_1_OFFSET: u8 = 32;
const PIC_2_OFFSET: u8 = PIC_1_OFFSET + 8;
static PICS: Mutex<ChainedPics> =
Mutex::new(unsafe { ChainedPics::new(PIC_1_OFFSET, PIC_2_OFFSET) });