Kernel: IRQs are now working :)

kernel/include/kernel/IDT.h

@@ -2,26 +2,12 @@
 
 #include <stdint.h>
 
-union GateDescriptor
+constexpr uint8_t IRQ_VECTOR_BASE = 0x50;
+
+namespace IDT
 {
-	struct
-	{
-		uint16_t	offset_lo;
-		uint16_t	selector;
-		uint8_t		reserved;
-		uint8_t		type		: 4;
-		uint8_t		zero		: 1;
-		uint8_t		dpl			: 2;
-		uint8_t		present		: 1;
-		uint16_t	offset_hi;
-	};
 
-	struct
-	{
-		uint32_t low;
-		uint32_t high;
-	};
-	
-} __attribute__((packed));
+	void initialize();
+	void register_irq_handler(uint8_t irq, void (*f)());
 
-void idt_initialize();
+}

kernel/include/kernel/IO.h

@@ -0,0 +1,25 @@
+#pragma once
+
+#include <stdint.h>
+
+namespace IO
+{
+
+	static inline void outb(uint16_t port, uint8_t val)
+	{
+		asm volatile("outb %0, %1" : : "a"(val), "Nd"(port));
+	}
+
+	static inline uint8_t inb(uint16_t port)
+	{
+		uint8_t ret;
+		asm volatile("inb %1, %0" : "=a"(ret) : "Nd"(port));
+		return ret;
+	}
+
+	static inline void io_wait()
+	{
+		outb(0x80, 0);
+	}
+
+}

kernel/include/kernel/PIC.h

@@ -0,0 +1,15 @@
+#pragma once
+
+#include <stdint.h>
+
+namespace PIC
+{
+
+	void initialize();
+	void eoi(uint8_t);
+	void unmask(uint8_t);
+	void mask(uint8_t);
+
+	uint16_t get_isr();
+
+}

kernel/include/kernel/PIT.h

@@ -0,0 +1,12 @@
+#pragma once
+
+#include <stdint.h>
+
+namespace PIT
+{
+
+	uint64_t ms_since_boot();
+
+	void initialize();
+
+}

kernel/include/kernel/PS2.h

@@ -0,0 +1,8 @@
+#pragma once
+
+namespace PS2
+{
+
+	void initialize();
+
+}