EXC_TRC
ksi->ksi_trap = EXC_TRC;
case EXC_TRC|EXC_USER:
ksi.ksi_trap = EXC_TRC;
&& (frame->exc == EXC_TRC
case EXC_TRC:
(tf->tf_exc == EXC_TRC ||
case EXC_TRC: trapstr = "TRC"; break;
case EXC_TRC: /* Trace */
case EXC_TRC|EXC_USER:
ksi.ksi_trap = EXC_TRC;