Start off the interrupts driver (3h17m)

src/interrupts.rs

@@ -0,0 +1,20 @@
+use x86_64::structures::idt::{InterruptDescriptorTable, InterruptStackFrame};
+use crate::println;
+use lazy_static::lazy_static;
+lazy_static! {
+    static ref IDT: InterruptDescriptorTable = {
+        let mut idt = InterruptDescriptorTable::new();
+        idt.breakpoint.set_handler_fn(breakpoint_handler);
+        idt
+    };
+}
+
+pub fn init_idt() {
+    IDT.load();
+}
+
+extern "x86-interrupt" fn breakpoint_handler(
+    stack_frame: InterruptStackFrame)
+{
+    println!("EXCEPTION: BREAKPOINT\n{:#?}", stack_frame);
+}

src/lib.rs

@@ -4,9 +4,15 @@
 #![feature(custom_test_frameworks)]
 #![test_runner(crate::test_runner)]
 #![reexport_test_harness_main = "test_main"]
+#![feature(abi_x86_interrupt)]
+
+pub fn init() {
+    interrupts::init_idt();
+}
 
 pub mod serial;
 pub mod vga_buffer;
+pub mod interrupts;
 
 use core::panic::PanicInfo;
 

src/main.rs

@@ -11,9 +11,14 @@ use donald::println;
 pub extern "C" fn _start() -> ! {
     println!("Hello World{}", "!");
 
+    donald::init();
+
+    x86_64::instructions::interrupts::int3();
+
     #[cfg(test)]
     test_main();
 
+    println!("It did not crash!");
     loop {}
 }