TIB_TO_TCB
TCB_SET(TIB_TO_TCB(tib));
_libc_single_tcb = TIB_TO_TCB(tib);
param.tf_tcb = TIB_TO_TCB(tib);
if (thrkill(tib->tib_tid, sig, TIB_TO_TCB(tib)))
thrkill(tid, SIGTHR, TIB_TO_TCB(tib));
TCB_SET(TIB_TO_TCB(tib));