/* Get a thread's general register set.

   Copyright (C) 1999-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   Contributed by Ulrich Drepper <drepper@redhat.com>, 1999.

   The GNU C Library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library; if not, see

   <http://www.gnu.org/licenses/>.  */

#include "thread_dbP.h"

td_err_e

td_thr_getgregs (const td_thrhandle_t *th, prgregset_t regset)

{

  psaddr_t cancelhandling, tid;

  td_err_e err;

  LOG ("td_thr_getgregs");

  if (th->th_unique == 0)

    /* Special case for the main thread before initialization.  */

    return ps_lgetregs (th->th_ta_p->ph, ps_getpid (th->th_ta_p->ph),

			regset) != PS_OK ? TD_ERR : TD_OK;

  /* We have to get the state and the PID for this thread.  */

  err = DB_GET_FIELD (cancelhandling, th->th_ta_p, th->th_unique, pthread,

		      cancelhandling, 0);

  if (err != TD_OK)

    return err;

  /* If the thread already terminated we return all zeroes.  */

  if (((int) (uintptr_t) cancelhandling) & TERMINATED_BITMASK)

    memset (regset, '\0', sizeof (*regset));

  /* Otherwise get the register content through the callback.  */

  else

    {

      err = DB_GET_FIELD (tid, th->th_ta_p, th->th_unique, pthread, tid, 0);

      if (err != TD_OK)

	return err;

      if (ps_lgetregs (th->th_ta_p->ph, (uintptr_t) tid, regset) != PS_OK)

	return TD_ERR;

    }

  return TD_OK;

}