Add Klog.fatal_error()

src/hulk/klog.d

@@ -6,6 +6,7 @@ module hulk.klog;
 import core.stdc.stdarg;
 import hulk.console;
 static import hulk.writef;
+import hulk.cpu;
 
 struct Klog
 {
@@ -70,4 +71,17 @@ struct Klog
         writef("\n", args);
         va_end(args);
     }
+
+    /**
+     * Print a fatal kernel error and loop forever.
+     */
+    public static void fatal_error(T...)(T args)
+    {
+        writef("FATAL ERROR: ");
+        writefln(args);
+        cli();
+        for (;;)
+        {
+        }
+    }
 }