This commit is contained in:
Timothy Warren 2019-09-25 15:32:02 -04:00
parent 730df58cc8
commit 29dab9efff
7 changed files with 134 additions and 16 deletions

23
Cargo.lock generated
View File

@ -24,6 +24,8 @@ version = "0.1.0"
dependencies = [
"bootloader 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
"lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
"pc-keyboard 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
"pic8259_simple 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
"spin 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
"uart_16550 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
"volatile 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
@ -45,6 +47,11 @@ name = "cc"
version = "1.0.45"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "cpuio"
version = "0.2.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "lazy_static"
version = "1.4.0"
@ -58,6 +65,19 @@ name = "nodrop"
version = "0.1.13"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "pc-keyboard"
version = "0.3.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "pic8259_simple"
version = "0.1.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"cpuio 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "raw-cpuid"
version = "6.1.0"
@ -145,8 +165,11 @@ dependencies = [
"checksum bootloader 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)" = "45dd858bd74a742ec0fe887722952c263abd0825aa8d33a3704917a97d7bd41e"
"checksum cast 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "926013f2860c46252efceabb19f4a6b308197505082c609025aa6706c011d427"
"checksum cc 1.0.45 (registry+https://github.com/rust-lang/crates.io-index)" = "4fc9a35e1f4290eb9e5fc54ba6cf40671ed2a2514c3eeb2b2a908dda2ea5a1be"
"checksum cpuio 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "22b8e308ccfc5acf3b82f79c0eac444cf6114cb2ac67a230ca6c177210068daa"
"checksum lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
"checksum nodrop 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)" = "2f9667ddcc6cc8a43afc9b7917599d7216aa09c463919ea32c59ed6cac8bc945"
"checksum pc-keyboard 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "fff50ab09ba31bcebc0669f4e64c0952fae1acdca9e6e0587e68e4e8443808ac"
"checksum pic8259_simple 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "dc64b2fd10828da8521b6cdabe0679385d7d2a3a6d4c336b819d1fa31ba35c72"
"checksum raw-cpuid 6.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "30a9d219c32c9132f7be513c18be77c9881c7107d2ab5569d205a6a0f0e6dc7d"
"checksum rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "138e3e0acb6c9fb258b19b67cb8abd63c00679d2851805ea151465464fe9030a"
"checksum semver 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1d7eb9ef2c18661902cc47e535f9bc51b78acd254da71d375c2f6720d9a40403"

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@ -8,6 +8,8 @@ edition = "2018"
[dependencies]
bootloader = "0.8.1"
pc-keyboard = "0.3.1"
pic8259_simple = "0.1.1"
spin = "0.5.2"
uart_16550 = "0.2.0"
volatile = "0.2.6"

View File

@ -1,8 +1,11 @@
use lazy_static::lazy_static;
use pic8259_simple::ChainedPics;
use spin;
use x86_64::structures::idt::{InterruptDescriptorTable, InterruptStackFrame};
use crate::gdt;
use crate::println;
use crate::hlt_loop;
use crate::{print, println};
#[cfg(test)]
use crate::{serial_print, serial_println};
@ -15,6 +18,10 @@ lazy_static!{
idt.double_fault.set_handler_fn(double_fault_handler)
.set_stack_index(gdt::DOUBLE_FAULT_IST_INDEX);
}
idt[InterruptIndex::Timer.as_usize()]
.set_handler_fn(timer_interrupt_handler);
idt[InterruptIndex::Keyboard.as_usize()]
.set_handler_fn(keyboard_interrupt_handler);
idt
};
@ -33,7 +40,71 @@ extern "x86-interrupt" fn breakpoint_handler(
extern "x86-interrupt" fn double_fault_handler(
stack_frame: &mut InterruptStackFrame, _error_code: u64
) {
panic!("EXCEPTION: DOUBLE FAULT\n{:#?}", stack_frame);
println!("EXCEPTION: DOUBLE FAULT\n{:#?}", stack_frame);
hlt_loop();
}
extern "x86-interrupt" fn timer_interrupt_handler(
_stack_frame: &mut InterruptStackFrame
) {
print!(".");
unsafe {
PICS.lock().notify_end_of_interrupt(InterruptIndex::Timer.as_u8());
}
}
pub const PIC_1_OFFSET: u8 = 32;
pub const PIC_2_OFFSET: u8 = PIC_1_OFFSET + 8;
pub static PICS: spin::Mutex<ChainedPics> = spin::Mutex::new(unsafe {
ChainedPics::new(PIC_1_OFFSET, PIC_2_OFFSET)
});
extern "x86-interrupt" fn keyboard_interrupt_handler(_stack_frame: &mut InterruptStackFrame) {
use x86_64::instructions::port::Port;
use pc_keyboard::{Keyboard, ScancodeSet1, DecodedKey, layouts};
use spin::Mutex;
lazy_static!{
static ref KEYBOARD: Mutex<Keyboard<layouts::Us104Key, ScancodeSet1>> =
Mutex::new(Keyboard::new(layouts::Us104Key, ScancodeSet1));
}
let mut keyboard = KEYBOARD.lock();
let mut port = Port::new(0x60); // PS/2 port
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());
}
}
#[derive(Debug, Clone, Copy)]
#[repr(u8)]
pub 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())
}
}
#[test_case]

View File

@ -25,7 +25,7 @@ pub fn test_panic_handler(info: &PanicInfo) -> ! {
serial_println!("[failed]\n");
serial_println!("Error: {}\n", info);
exit_qemu(QemuExitCode::Failed);
loop {}
hlt_loop();
}
/// Entry point for `cargo xtest`
@ -34,7 +34,7 @@ pub fn test_panic_handler(info: &PanicInfo) -> ! {
pub extern "C" fn _start() -> ! {
init();
test_main();
loop {}
hlt_loop();
}
#[cfg(test)]
@ -59,7 +59,15 @@ pub fn exit_qemu(exit_code: QemuExitCode) {
}
}
pub fn hlt_loop() -> ! {
loop {
x86_64::instructions::hlt();
}
}
pub fn init() {
gdt::init();
interrupts::init_idt();
unsafe { interrupts::PICS.lock().initialize() };
x86_64::instructions::interrupts::enable();
}

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@ -13,7 +13,7 @@ use blog_os::println;
#[panic_handler]
fn panic(info: &PanicInfo) -> ! {
println!("{}", info);
loop {}
blog_os::hlt_loop();
}
#[cfg(test)]
@ -32,5 +32,5 @@ pub extern "C" fn _start() -> ! {
test_main();
println!("It did not crash!");
loop {}
blog_os::hlt_loop();
}

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@ -13,8 +13,12 @@ lazy_static! {
#[doc(hidden)]
pub fn _print(args: ::core::fmt::Arguments) {
use core::fmt::Write;
SERIAL1
.lock()
.write_fmt(args)
.expect("Printing to serial failed");
use x86_64::instructions::interrupts;
interrupts::without_interrupts(|| {
SERIAL1
.lock()
.write_fmt(args)
.expect("Printing to serial failed");
});
}

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@ -134,7 +134,11 @@ lazy_static! {
#[doc(hidden)]
pub fn _print(args: fmt::Arguments) {
use core::fmt::Write;
WRITER.lock().write_fmt(args).unwrap();
use x86_64::instructions::interrupts;
interrupts::without_interrupts(|| {
WRITER.lock().write_fmt(args).unwrap();
});
}
#[test_case]
@ -155,14 +159,20 @@ fn test_println_many() {
#[test_case]
fn test_println_output() {
use core::fmt::Write;
use x86_64::instructions::interrupts;
serial_print!("test_println_output... ");
let s = "Some test string that fits on a single line";
println!("{}", s);
for (i, c) in s.chars().enumerate() {
let screen_char = WRITER.lock().buffer.chars[BUFFER_HEIGHT - 2][i].read();
assert_eq!(char::from(screen_char.ascii_character), c);
}
interrupts::without_interrupts(|| {
let mut writer = WRITER.lock();
writeln!(writer, "\n{}", s).expect("writeln failed");
for (i, c) in s.chars().enumerate() {
let screen_char = writer.buffer.chars[BUFFER_HEIGHT - 2][i].read();
assert_eq!(char::from(screen_char.ascii_character), c);
}
});
serial_println!("[ok]");
}