From 4c0ce08bc88bca70de481fd0402018b11035ba1d Mon Sep 17 00:00:00 2001
From: greg <greg.shuflin@protonmail.com>
Date: Thu, 11 Jul 2019 02:51:00 -0700
Subject: [PATCH] Double fault

---
 src/interrupts.rs | 5 +++++
 src/main.rs       | 5 ++---
 2 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/src/interrupts.rs b/src/interrupts.rs
index 3802522..fa67843 100644
--- a/src/interrupts.rs
+++ b/src/interrupts.rs
@@ -6,6 +6,7 @@ lazy_static! {
   static ref IDT: InterruptDescriptorTable = {
     let mut idt = InterruptDescriptorTable::new();
     idt.breakpoint.set_handler_fn(breakpoint_handler);
+    idt.double_fault.set_handler_fn(double_fault_handler);
     idt
   };
 }
@@ -18,3 +19,7 @@ extern "x86-interrupt" fn breakpoint_handler(stack_frame: &mut InterruptStackFra
 
   println!("EXCEPTION - BREAKPOINT\n{:#?}", stack_frame);
 }
+
+extern "x86-interrupt" fn double_fault_handler(stack_frame: &mut InterruptStackFrame, code: u64) {
+  panic!("EXCEPTION - DOUBLE FAULT (code {})\n{:#?}", code, stack_frame);
+}
diff --git a/src/main.rs b/src/main.rs
index 71dbf8b..5febffc 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -22,15 +22,14 @@ pub fn init() {
 pub extern "C" fn _start() -> ! {
 
   init();
-  x86_64::instructions::interrupts::int3();
+  //x86_64::instructions::interrupts::int3();
 
   unsafe {
-    asm!("mov dx, 0; div dx" ::: "ax", "dx" : "volatile", "intel")
+    *(0xf0f0b8b8 as *mut u64) = 10;
   }
 
   println!("Gamarjoba, munde: {}", 1);
   println!("Gamarjoba, munde: {}", 2);
-  panic!("A bad thing happened");
   loop {}
 }