Breakpoint interrupt

src/interrupts.rs

@@ -1,6 +1,20 @@
+use lazy_static::lazy_static;
+use x86_64::structures::idt::{InterruptStackFrame, InterruptDescriptorTable};
+use crate::println;
 
-use x86_64::structures::idt::InterruptDescriptorTable;
+lazy_static! {
+  static ref IDT: InterruptDescriptorTable = {
+    let mut idt = InterruptDescriptorTable::new();
+    idt.breakpoint.set_handler_fn(breakpoint_handler);
+    idt
+  };
+}
 
 pub fn init_idt() {
-  let mut idt = InterruptDescriptorTable::new();
+  IDT.load();
+}
+
+extern "x86-interrupt" fn breakpoint_handler(stack_frame: &mut InterruptStackFrame) {
+
+  println!("EXCEPTION - BREAKPOINT\n{:#?}", stack_frame);
 }

src/main.rs

@@ -1,3 +1,4 @@
+#![feature(abi_x86_interrupt)] 
 #![no_std]
 #![no_main]
 
@@ -13,10 +14,18 @@ fn panic(info: &PanicInfo) -> !{
   loop {}
 }
 
+pub fn init() {
+  interrupts::init_idt();
+}
+
 #[no_mangle]
 pub extern "C" fn _start() -> ! {
+
+  init();
+  x86_64::instructions::interrupts::int3();
+
   println!("Gamarjoba, munde: {}", 1);
-  panic!("A bad thing happened");
+  //panic!("A bad thing happened");
   loop {}
 }