almost got the term emu working and shell

kernel/memory/mm.c

@@ -267,4 +267,8 @@ void* clone_current_pd() {
     unmap_page(TEMP_TASKPD_VADDR);
 
     return (void*)task_pd_addr;
+}
+
+void clear_current_pd() {
+    
 }

kernel/memory/mm.h

@@ -34,6 +34,7 @@ uint32_t total_free_memory();
 
 void* create_new_pd();
 void* clone_current_pd();
+void clear_current_pd();
 
 int is_cow(uint32_t vaddr);