Add keyboard driver

1 files changed, 20 insertions, 7 deletions

diff --git a/src/idt.h b/src/idt.h
index bc71f05..3a9848f 100644
--- a/src/idt.h
+++ b/src/idt.h
@@ -2,7 +2,21 @@
 
 #include <types.h>
 
+class InterruptHandler {
+private:
+  const uint8_t m_irq;
+
+protected:
+  InterruptHandler(uint8_t irq);
+  ~InterruptHandler();
+
+public:
+  virtual void trigger();
+};
+
 class IDT {
+  friend class InterruptHandler;
+
 public:
   struct Pointer {
     uint16_t limit;
@@ -19,24 +33,23 @@ public:
   class Entry {
   public:
     constexpr Entry() = default;
-    Entry(void (*handler)(), uint16_t select, 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;
-    }
+    Entry(void (*handler)(), uint16_t select, InterruptType t);
 
   private:
     uint16_t offset_0_15 = 0;            //  0-15 offset in the segment
     uint16_t selector = 0;               // 16-31 selector of the code segment
     [[maybe_unused]] uint8_t null = 0;   // 32-39 unused in protected mode
     InterruptType type = Null;           // 40-43 type
-    uint16_t offset_16_31 = 0;             // 48-63 offset high
+    uint16_t offset_16_31 = 0;           // 48-63 offset high
   } __attribute__((packed));
 
   IDT(const uint16_t selector);
+  void enable() { asm volatile("sti"); }
 
 private:
   Entry table[256];
+
+  static bool install(uint8_t, InterruptHandler*);
+  static bool uninstall(uint8_t, InterruptHandler*);
 };