void perform_alpha_threadswitch (u1 **from, u1 **to) {}
u1* initialize_thread_stack (void *func, u1 *stack) { return NULL; }
-u1* used_stack_top (void) { return NULL; }
+void asm_switchstackandcall () { }
java_objectheader *native_new_and_init (void *p) { return NULL; }