diff --git a/kernel/thread/thread.cc b/kernel/thread/thread.cc
index b53c678..b9a56fb 100644
--- a/kernel/thread/thread.cc
+++ b/kernel/thread/thread.cc
@@ -20,6 +20,10 @@ void Thread::kickoff(uintptr_t param1, uintptr_t param2, uintptr_t param3) {
 	thread->action();
 }
 
+void Thread::kickoffUsermode (Thread *object){
+	(void) object;
+}
+
 Thread::Thread() : queue_link(nullptr), id(idCounter++), kill_flag(false) {
 	void *tos = reinterpret_cast<void *>(reserved_stack_space + STACK_SIZE);
 	prepareContext(tos, context, kickoff, reinterpret_cast<uintptr_t>(this), 0,
diff --git a/kernel/thread/thread.h b/kernel/thread/thread.h
index 8149670..8b3e465 100644
--- a/kernel/thread/thread.h
+++ b/kernel/thread/thread.h
@@ -35,6 +35,11 @@ class Thread {
 	 */
 	alignas(16) char reserved_stack_space[STACK_SIZE];
 
+	struct{
+		void* user;
+		void* isr;
+	} StackPointer;
+
    protected:
 	/*! \brief Context of the thread, used for saving and restoring the register
 	 * values when context switching.
@@ -59,6 +64,8 @@ class Thread {
 	 */
 	static void kickoff(uintptr_t param1, uintptr_t param2, uintptr_t param3);
 
+	static void kickoffUsermode (Thread *object);
+
    public:
 	/*! \brief Unique thread id */
 	const size_t id;