Initialize the PIC

src/interrupts.rs

@@ -6,6 +6,14 @@
 use crate::{gdt, println};
 use lazy_static::lazy_static;
 use x86_64::structures::idt::{ExceptionStackFrame, InterruptDescriptorTable};
+use pic8259_simple::ChainedPics;
+use spin;
+
+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) });
 
 lazy_static! {
     static ref IDT: InterruptDescriptorTable = {

src/main.rs

@@ -8,22 +8,19 @@ use core::panic::PanicInfo;
 #[cfg(not(test))]
 #[no_mangle]
 pub extern "C" fn _start() -> ! {
+    use blog_os::interrupts::PICS;
+
     println!("Hello World{}", "!");
 
     blog_os::gdt::init();
     blog_os::interrupts::init_idt();
-
-    fn stack_overflow() {
-        stack_overflow(); // for each recursion, the return address is pushed
-    }
-
-    // trigger a stack overflow
-    stack_overflow();
+    unsafe { PICS.lock().initialize() };
 
     println!("It did not crash!");
     loop {}
 }
 
+
 /// This function is called on panic.
 #[cfg(not(test))]
 #[panic_handler]