Add HURL; relocate kernel virtual regions

src/hulk/header.d

@@ -23,4 +23,13 @@ struct Header
 
     /** Stack size. */
     ulong stack_size;
+
+    /** Virtual base address. */
+    ulong virt_base;
+
+    /** Stack top virtual address. */
+    ulong virt_stack_top;
+
+    /** Framebuffer virtual address. */
+    ulong virt_fb_buffer;
 }