memset (gregs, '\0', sizeof (prgregset_t));
pid_t pid = ps_getpid (th->th_ta_p->ph); if (ps_lgetregs (th->th_ta_p->ph, pid, gregs) != PS_OK) return TD_ERR;
td_thr_getgregs (const td_thrhandle_t *th, prgregset_t gregs){  struct _pthread_descr_struct pds;  LOG ("td_thr_getgregs");  if (th->th_unique == NULL)    {      /* No data yet.  */      memset (gregs, '\0', sizeof (prgregset_t));      return TD_OK;    }  /* We have to get the state and the PID for this thread.  */  if (ps_pdread (th->th_ta_p->ph, th->th_unique, &pds,		 sizeof (struct _pthread_descr_struct)) != PS_OK)    return TD_ERR;  /* If the thread already terminated we return all zeroes.  */  if (pds.p_terminated)    memset (gregs, '\0', sizeof (prgregset_t));  /* Otherwise get the register content through the callback.  */  else    {      pid_t pid = pds.p_pid ?: ps_getpid (th->th_ta_p->ph);      if (ps_lgetregs (th->th_ta_p->ph, pid, gregs) != PS_OK)	return TD_ERR;    }  return TD_OK;}