[INTERRUPTS] Exception handling

kernel/boot/kmain.c

@@ -1,4 +1,5 @@
 #include <debug.h>
+#include <int.h>
 #include <multiboot.h>
 #include <mem.h>
 
@@ -8,8 +9,15 @@ int kmain(uint64_t multiboot_magic, void *multiboot_data)
   debug_ok("MITTOS64 kernel booted\n");
   debug_build_time();
   debug_git_info();
+
+  interrupt_init();
   multiboot_init(multiboot_magic, P2V(multiboot_data));
 
   debug_info("BOOT COMPLETE\n");
+  // Cause a divide-by-zero exception
+  int a = 5, b = 0;
+  int c = a/b;
+  (void)c;
+
   for(;;)asm("hlt");
 }