From 6b13d5d9b1ff1cb38bb50e918e51a241a225f8da Mon Sep 17 00:00:00 2001
From: Hanjie Wu <hanjiew@andrew.cmu.edu>
Date: Mon, 24 Apr 2023 03:51:54 -0400
Subject: timer

---
 kern/timer_asm.S | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 kern/timer_asm.S

(limited to 'kern/timer_asm.S')

diff --git a/kern/timer_asm.S b/kern/timer_asm.S
new file mode 100644
index 0000000..cf4c76f
--- /dev/null
+++ b/kern/timer_asm.S
@@ -0,0 +1,18 @@
+#include <x86/seg.h>
+#include <x86/interrupt_defines.h>
+#include <x86/timer_defines.h>
+
+.text
+
+.global timer_test_handler
+.type timer_test_handler, %function
+timer_test_handler:
+    push %eax
+    mov timer_test_status, %eax
+    dec %eax
+    mov %eax, timer_test_status
+    mov $INT_ACK_CURRENT, %al
+    mov $INT_CTL_PORT, %dx
+    outb %al, %dx
+    pop %eax
+    iret
-- 
cgit