From dda15ea8895fdb83bfaf545eb6a0a578f77315f3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Thomas=20Lov=C3=A9n?= <thomasloven@gmail.com>
Date: Tue, 24 Oct 2017 22:27:48 +0200
Subject: [PATCH] Save eax after boot, so we can check that we're actually
 loaded via multiboot

---
 src/kernel/boot/boot.S | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/kernel/boot/boot.S b/src/kernel/boot/boot.S
index 13f6fda..65ca0e6 100644
--- a/src/kernel/boot/boot.S
+++ b/src/kernel/boot/boot.S
@@ -26,6 +26,9 @@ MultiBootHeader2End:
 _start:
 cli
 
+# Save the multiboot magic number
+mov ecx, eax
+
 // Print a red exclamation mark in top left corner
 mov eax, 0x0421
 mov short [0xB8000], ax