i'm so close

src/tasking/syscalls.c

@@ -103,7 +103,14 @@ int sys_fork(TrapFrame *tf)
     sp -= sizeof(TrapFrame);
     child->tf = (TrapFrame*)sp;
 
-    *child->tf = *tf;
+    memcpy(&child->tf->gs, &tf->gs, 12 * sizeof(uint32_t));
+    uint32_t* parent_cpu_state_ptr = (uint32_t*)&tf->interrupt;
+    child->tf->eip          = parent_cpu_state_ptr[0];
+    child->tf->cs           = parent_cpu_state_ptr[1];
+    child->tf->eflags       = parent_cpu_state_ptr[2];
+    child->tf->usermode_esp = parent_cpu_state_ptr[3];
+    child->tf->usermode_ss  = parent_cpu_state_ptr[4];
+
     child->tf->eax = 0;       // Child returns 0
     debug_log("Parent returns PID: %X, Child returns 0\n", child->pid);