From ae4265ea5d77b68757af39d73fe47df1a3563b42 Mon Sep 17 00:00:00 2001
From: Aqua-sama <aqua@iserlohn-fortress.net>
Date: Sun, 28 Feb 2021 22:39:25 +0200
Subject: Add keyboard driver

---
 src/idt/interruptgate.cc    | 10 ++++++++++
 src/idt/interrupthandler.cc | 14 ++++++++++++++
 2 files changed, 24 insertions(+)
 create mode 100644 src/idt/interruptgate.cc
 create mode 100644 src/idt/interrupthandler.cc

(limited to 'src/idt')

diff --git a/src/idt/interruptgate.cc b/src/idt/interruptgate.cc
new file mode 100644
index 0000000..0dbcce2
--- /dev/null
+++ b/src/idt/interruptgate.cc
@@ -0,0 +1,10 @@
+#include "../idt.h"
+
+static_assert(sizeof(IDT::Entry) == 8);  // size of IDT::Entry in protected mode is 64 bits
+
+IDT::Entry::Entry(void (*handler)(), uint16_t select, IDT::InterruptType t) {
+  offset_0_15 = reinterpret_cast<uint32_t>(handler) & 0xffff;
+  offset_16_31 = (reinterpret_cast<uint32_t>(handler) >> 16) & 0xffff;
+  selector = select;
+  type = t;
+}
diff --git a/src/idt/interrupthandler.cc b/src/idt/interrupthandler.cc
new file mode 100644
index 0000000..7af830b
--- /dev/null
+++ b/src/idt/interrupthandler.cc
@@ -0,0 +1,14 @@
+#include <stdlib.h>
+#include "../idt.h"
+
+InterruptHandler::InterruptHandler(uint8_t irq) : m_irq(irq) {
+  IDT::install(m_irq, this);
+}
+
+InterruptHandler::~InterruptHandler() {
+  IDT::uninstall(m_irq, this);
+}
+
+void InterruptHandler::trigger() {
+  printk("Unhandled interrupt ", uhex{m_irq}, '\n');
+}
-- 
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