DFC
space_names[ssw & DFC], fp->ptregs.pc);
if (! ((ssw & DF) && ((ssw & DFC) == USER_DATA))) {
space_names[ssw & DFC], fp->ptregs.pc);
space_names[ssw & DFC], fp->ptregs.pc);
space_names[ssw & DFC], fp->ptregs.pc);
fp->un.fmtb.daddr, space_names[ssw & DFC],