feature: apic is now enabled and the double fault interrupt at boot no longer occurs

libbozo/headers/sys/io.h

@@ -1,5 +1,6 @@
 #pragma once
 
+#include <stddef.h>
 #include <stdint.h>
 
 static inline void outb(uint16_t port, uint8_t val)
@@ -25,3 +26,18 @@ static inline uint16_t inw(uint16_t port)
 	__asm__ volatile("inb %w1, %b0" : "=a"(ret) : "Nd"(port) : "memory");
 	return ret;
 }
+
+static inline void io_wait(void)
+{
+	outb(0x80, 0);
+}
+
+static inline void write_reg(size_t addr, uint32_t val)
+{
+	*(volatile uint32_t *)addr = val;
+}
+
+static inline uint32_t read_reg(size_t addr)
+{
+	return *(volatile uint32_t *)addr;
+}