From c6bd48e812a81d0501572db54d6b2078a44263d0 Mon Sep 17 00:00:00 2001
From: Philipp Oppermann <dev@phil-opp.com>
Date: Fri, 25 Jan 2019 13:50:33 +0100
Subject: [PATCH] Load and test our new IDT

---
 src/interrupts.rs | 12 ++++++++++--
 src/main.rs       |  6 ++++++
 2 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/src/interrupts.rs b/src/interrupts.rs
index 0be9ec40..1a7de0df 100644
--- a/src/interrupts.rs
+++ b/src/interrupts.rs
@@ -1,9 +1,17 @@
 use crate::println;
+use lazy_static::lazy_static;
 use x86_64::structures::idt::{ExceptionStackFrame, 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.breakpoint.set_handler_fn(breakpoint_handler);
+    IDT.load();
 }
 
 extern "x86-interrupt" fn breakpoint_handler(stack_frame: &mut ExceptionStackFrame) {
diff --git a/src/main.rs b/src/main.rs
index 9a14d932..ad1e2f7d 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -10,6 +10,12 @@ use core::panic::PanicInfo;
 pub extern "C" fn _start() -> ! {
     println!("Hello World{}", "!");
 
+    blog_os::interrupts::init_idt();
+
+    // invoke a breakpoint exception
+    x86_64::instructions::int3();
+
+    println!("It did not crash!");
     loop {}
 }