From 5cfe5443e678e3354ed3488baea9c91cbb9e7697 Mon Sep 17 00:00:00 2001
From: dzwdz
Date: Fri, 9 Jul 2021 16:49:59 +0200
Subject: interrupt self-test

---
 kernel/idt.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

(limited to 'kernel/idt.c')

diff --git a/kernel/idt.c b/kernel/idt.c
index e1d45b9..cd032d3 100644
--- a/kernel/idt.c
+++ b/kernel/idt.c
@@ -1,6 +1,7 @@
 #include <kernel/gdt.h>
 #include <kernel/idt.h>
 #include <kernel/isr.h>
+#include <kernel/tty.h> // used only for the selftest
 #include <stdbool.h>
 #include <stdint.h>
 
@@ -51,7 +52,8 @@ static void idt_prepare() {
 	for (int i = 0; i < 256; i++)
 		IDT[i].present = 0;
 
-	idt_add(0x8, false, isr_double_fault);
+	idt_add(0x08, false, isr_double_fault);
+	idt_add(0x34, false, isr_test_interrupt);
 }
 
 static void idt_load() {
@@ -62,6 +64,10 @@ static void idt_load() {
 
 static void idt_test() {
 	asm("int $0x34" : : : "memory");
+	if (!isr_test_interrupt_called) {
+		tty_const("IDT self test failed");
+		for(;;);
+	}
 }
 
 void idt_init() {
-- 
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