From 5e12467c860372dfa10323365fb0df9db79c8f9b Mon Sep 17 00:00:00 2001
From: Peter Mikkelsen <petermikkelsen10@gmail.com>
Date: Thu, 31 Jul 2025 22:33:56 +0200
Subject: APIC/ACPI/keyboard stuff. I now get interrupts when a key is pressed

---
 src/nasty.S | 19 ++++++++++++++++++-
 1 file changed, 18 insertions(+), 1 deletion(-)

(limited to 'src/nasty.S')

diff --git a/src/nasty.S b/src/nasty.S
index f3d958e..997fb6c 100644
--- a/src/nasty.S
+++ b/src/nasty.S
@@ -79,7 +79,8 @@ get_cr3:
 	ISR(28) \
 	ISR(29) \
 	ISR(30) \
-	ISR(31) 
+	ISR(31) \
+	ISR(32)
 
 .extern interrupt_handler
 #define ISR(n)	\
@@ -147,3 +148,19 @@ dump_regs:
 	mov [rdi+192], fs
 	mov [rdi+194], gs
 	ret
+
+.global get_msr
+get_msr:
+	mov ecx, edi
+	mov rax, 0 /* Not sure if this and the next line are needed. My assembly skills are lacking. */
+	mov rdx, 0
+	rdmsr
+	shl rdx, 32
+	or rax, rdx
+	ret
+
+.global in_uint8
+in_uint8:
+	mov dx, di
+	in ax, dx
+	ret
-- 
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