linuxthreads_db/td_thr_getgregs.c

   1 /* Get a thread's general register set.
   2    Copyright (C) 1999, 2000 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1999.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Library General Public License as
   8    published by the Free Software Foundation; either version 2 of the
   9    License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Library General Public License for more details.
  15
  16    You should have received a copy of the GNU Library General Public
  17    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  18    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  19    Boston, MA 02111-1307, USA.  */
  20
  21 #include "thread_dbP.h"
  22
  23
  24 td_err_e
  25 td_thr_getgregs (const td_thrhandle_t *th, prgregset_t gregs)
  26 {
  27   struct _pthread_descr_struct pds;
  28
  29   LOG (__FUNCTION__);
  30
  31   /* We have to get the state and the PID for this thread.  */
  32   if (ps_pdread (th->th_ta_p->ph, th->th_unique, &pds,
  33                  sizeof (struct _pthread_descr_struct)) != PS_OK)
  34     return TD_ERR;
  35
  36   /* If the thread already terminated we return all zeroes.  */
  37   if (pds.p_terminated)
  38     memset (gregs, '\0', sizeof (prgregset_t));
  39   /* Otherwise get the register content through the callback.  */
  40   else if (ps_lgetregs (th->th_ta_p->ph, pds.p_pid, gregs) != PS_OK)
  41     return TD_ERR;
  42
  43   return TD_OK;
  44 }