From 9aa88fe186fff2d8810bba8e7daaa307c04c53ec Mon Sep 17 00:00:00 2001
From: Andreas Kling <awesomekling@gmail.com>
Date: Wed, 17 Oct 2018 16:53:06 +0200
Subject: [PATCH] Add a PIC::getISR() helper.

---
 Kernel/PIC.cpp | 9 +++++++++
 Kernel/PIC.h   | 3 +++
 2 files changed, 12 insertions(+)

diff --git a/Kernel/PIC.cpp b/Kernel/PIC.cpp
index 868cf5a97b..e22cc4d9ce 100644
--- a/Kernel/PIC.cpp
+++ b/Kernel/PIC.cpp
@@ -93,4 +93,13 @@ void initialize()
 #endif
 }
 
+word getISR()
+{
+    IO::out8(PIC0_CTL, 0x0b);
+    IO::out8(PIC1_CTL, 0x0b);
+    byte isr0 = IO::in8(PIC0_CTL);
+    byte isr1 = IO::in8(PIC1_CTL);
+    return (isr1 << 8) | isr0;
+}
+
 }
diff --git a/Kernel/PIC.h b/Kernel/PIC.h
index b1c3ed3a72..f8549e753f 100644
--- a/Kernel/PIC.h
+++ b/Kernel/PIC.h
@@ -1,11 +1,14 @@
 #pragma once
 
+#include <AK/Types.h>
+
 namespace PIC {
 
 void enable(BYTE number);
 void disable(BYTE number);
 void eoi(BYTE number);
 void initialize();
+word getISR();
 
 }