vmf_ss
vm86_suword16(MAKE_ADDR(vmf->vmf_ss, vmf->vmf_sp), x);
vm86_suword(MAKE_ADDR(vmf->vmf_ss, vmf->vmf_sp), x);
u_short x = vm86_fuword16(MAKE_ADDR(vmf->vmf_ss, vmf->vmf_sp));
u_int x = vm86_fuword(MAKE_ADDR(vmf->vmf_ss, vmf->vmf_sp));
vmf->vmf_ss = 0;