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

headers/apic.h

@@ -0,0 +1,16 @@
+#pragma once
+
+#include <stdbool.h>
+#include <stdint.h>
+
+// MSR
+bool cpu_has_msr();
+void cpu_set_msr(uint32_t msr, uint32_t lo, uint32_t hi);
+void cpu_get_msr(uint32_t msr, uint32_t *lo, uint32_t *hi);
+
+// 8259 PIC
+void pic_disable(void);
+void pic_remap(int offset_master, int offset_slave);
+
+// APIC
+void enable_apic(void);