From 2701fe07b4c8c9b6a36112c98fbfc900acbd6cf3 Mon Sep 17 00:00:00 2001
From: Dennis Kobert <dennis@kobert.dev>
Date: Wed, 27 Nov 2019 01:46:33 +0100
Subject: Implement proto Keyboard handling

---
 kernel/src/interrupts/idt.rs                |  2 ++
 kernel/src/interrupts/interrupt_handlers.rs | 12 +++++++++++-
 kernel/src/lib.rs                           |  1 -
 kernel/src/main.rs                          |  2 +-
 kernel/src/testing/panic.rs                 |  5 +++++
 5 files changed, 19 insertions(+), 3 deletions(-)

diff --git a/kernel/src/interrupts/idt.rs b/kernel/src/interrupts/idt.rs
index e41f957..c901916 100644
--- a/kernel/src/interrupts/idt.rs
+++ b/kernel/src/interrupts/idt.rs
@@ -26,6 +26,8 @@ lazy_static! {
                 .set_stack_index(gdt::PAGE_FAULT_IST_INDEX);
         }
         idt[InterruptType::Timer.as_usize()].set_handler_fn(interrupt_handlers::timer_handler);
+        idt[InterruptType::Keyboard.as_usize()]
+            .set_handler_fn(interrupt_handlers::keyboard_handler);
 
         idt
     };
diff --git a/kernel/src/interrupts/interrupt_handlers.rs b/kernel/src/interrupts/interrupt_handlers.rs
index 4624723..e7af0e1 100644
--- a/kernel/src/interrupts/interrupt_handlers.rs
+++ b/kernel/src/interrupts/interrupt_handlers.rs
@@ -1,11 +1,21 @@
 use super::InterruptType;
 use crate::io::qemu;
+use core::fmt::Write;
 use x86_64::structures::idt::{InterruptStackFrame, PageFaultErrorCode};
+use x86_64::structures::port;
 
 pub extern "x86-interrupt" fn timer_handler(stack_frame: &mut InterruptStackFrame) {
-    panic!("Timer interrupt recieved\n\n");
+    write!(crate::io::vga_text::OStream::new(), "Timer");
 
     if let Some(apic) = unsafe { super::apic::get_local_apic() } {
         apic.end_of_interrupt()
     }
 }
+
+pub extern "x86-interrupt" fn keyboard_handler(stack_frame: &mut InterruptStackFrame) {
+    let code: u8 = unsafe { port::PortRead::read_from_port(0x60) };
+    write!(crate::io::vga_text::OStream::new(), "{}", code);
+    if let Some(apic) = unsafe { super::apic::get_local_apic() } {
+        apic.end_of_interrupt()
+    }
+}
diff --git a/kernel/src/lib.rs b/kernel/src/lib.rs
index adf14b4..f03ef36 100644
--- a/kernel/src/lib.rs
+++ b/kernel/src/lib.rs
@@ -1,5 +1,4 @@
 #![no_main]
-#![feature(compiler_builtins_lib)]
 #![feature(custom_test_frameworks)]
 #![feature(abi_x86_interrupt)]
 #![feature(panic_info_message)]
diff --git a/kernel/src/main.rs b/kernel/src/main.rs
index c6c00c2..8b21eef 100644
--- a/kernel/src/main.rs
+++ b/kernel/src/main.rs
@@ -1,5 +1,4 @@
 #![no_main]
-#![feature(compiler_builtins_lib)]
 #![feature(custom_test_frameworks)]
 #![feature(abi_x86_interrupt)]
 #![feature(panic_info_message)]
@@ -32,6 +31,7 @@ extern "C" fn _start() -> ! {
 
     let mut stdout = OStream::new();
     stdout.print(b"apic initialisation complete\n");
+    x86_64::instructions::interrupts::int3();
 
     if cfg!(test) {
         qemu::exit_qemu(qemu::QemuExitCode::Success);
diff --git a/kernel/src/testing/panic.rs b/kernel/src/testing/panic.rs
index 729a45f..de07ba8 100644
--- a/kernel/src/testing/panic.rs
+++ b/kernel/src/testing/panic.rs
@@ -4,8 +4,10 @@ use core::panic::PanicInfo;
 use qemu::{exit_qemu, QemuExitCode};
 use serial::SerialStream;
 use vga_text::OStream;
+use x86_64::instructions::interrupts;
 
 pub fn serial_should_panic(info: &PanicInfo) -> ! {
+    interrupts::disable();
     let mut stdout = SerialStream::new();
     write!(stdout, "\nOK\nsuccessfully panicked\n").unwrap();
     exit_qemu(QemuExitCode::Success);
@@ -13,6 +15,7 @@ pub fn serial_should_panic(info: &PanicInfo) -> ! {
 }
 
 pub fn serial_panic(info: &PanicInfo) -> ! {
+    interrupts::disable();
     crate::io::panic_screen::show(info.message());
     let mut stdout = SerialStream::new();
     write!(
@@ -26,11 +29,13 @@ pub fn serial_panic(info: &PanicInfo) -> ! {
 }
 
 pub fn should_panic(_info: &PanicInfo) -> ! {
+    interrupts::disable();
     exit_qemu(QemuExitCode::Success);
     loop {}
 }
 
 pub fn panic(info: &PanicInfo) -> ! {
+    interrupts::disable();
     crate::io::panic_screen::show(info.message());
     loop {}
 }
-- 
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