rgs
*valuep = rgs();
sf.sf_siginfo.si_sc.sc_gs = rgs();
sf.sf_uc.uc_mcontext.mc_gs = rgs();
sf.sf_uc.uc_mcontext.mc_gs = rgs();
pcb->pcb_gs = rgs();
td1->td_pcb->pcb_gs = rgs();
td->td_pcb->pcb_gs = rgs();
frame.sf_uc.uc_mcontext.sc_gs = rgs();
frame.sf_sc.sc_gs = rgs();
gs = rgs();