From a949055bce90c99676e484fb262d97834817f20a Mon Sep 17 00:00:00 2001
From: Drew Galbraith <dgalbraith33@gmail.com>
Date: Mon, 29 May 2023 22:01:06 -0700
Subject: [PATCH] Flesh out the GP Fault hanlder slightly.

---
 zion/interrupt/interrupt.cpp | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/zion/interrupt/interrupt.cpp b/zion/interrupt/interrupt.cpp
index 87b83ab..76da596 100644
--- a/zion/interrupt/interrupt.cpp
+++ b/zion/interrupt/interrupt.cpp
@@ -67,7 +67,21 @@ extern "C" void isr_divide_by_zero();
 extern "C" void interrupt_divide_by_zero(void* frame) { panic("DIV0"); }
 
 extern "C" void isr_protection_fault();
-extern "C" void interrupt_protection_fault(void* frame) { panic("GP"); }
+extern "C" void interrupt_protection_fault(InterruptFrame* frame) {
+  dbgln("General Protection Fault");
+  uint64_t err = frame->error_code;
+  if (err & 0x1) {
+    dbgln("External Source");
+  }
+  if (err & 0x2) {
+    dbgln("IDT");
+  } else {
+    dbgln("GDT");
+  }
+  dbgln("Index: %u", err >> 3);
+
+  panic("GP");
+}
 
 extern "C" void isr_page_fault();
 extern "C" void interrupt_page_fault(InterruptFrame* frame) {