Add keyboard driver

2 files changed, 24 insertions, 0 deletions

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');
+}