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glibc  2.9
td_thr_setgregs.c
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00001 /* Set a thread's general register set.
00002    Copyright (C) 1999, 2001, 2002 Free Software Foundation, Inc.
00003    This file is part of the GNU C Library.
00004    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1999.
00005 
00006    The GNU C Library is free software; you can redistribute it and/or
00007    modify it under the terms of the GNU Lesser General Public
00008    License as published by the Free Software Foundation; either
00009    version 2.1 of the License, or (at your option) any later version.
00010 
00011    The GNU C Library is distributed in the hope that it will be useful,
00012    but WITHOUT ANY WARRANTY; without even the implied warranty of
00013    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014    Lesser General Public License for more details.
00015 
00016    You should have received a copy of the GNU Lesser General Public
00017    License along with the GNU C Library; if not, write to the Free
00018    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00019    02111-1307 USA.  */
00020 
00021 #include "thread_dbP.h"
00022 
00023 
00024 td_err_e
00025 td_thr_setgregs (const td_thrhandle_t *th, prgregset_t gregs)
00026 {
00027   struct _pthread_descr_struct pds = { .p_terminated = 0, .p_pid = 0 };
00028 
00029   LOG ("td_thr_setgregs");
00030 
00031   /* We have to get the state and the PID for this thread.  */
00032   if (th->th_unique != NULL
00033       && ps_pdread (th->th_ta_p->ph, th->th_unique, &pds,
00034                  sizeof (struct _pthread_descr_struct)) != PS_OK)
00035     return TD_ERR;
00036 
00037   /* Only set the registers if the thread hasn't yet terminated.  */
00038   if (pds.p_terminated == 0)
00039     {
00040       pid_t pid = pds.p_pid ?: ps_getpid (th->th_ta_p->ph);
00041 
00042       if (ps_lsetregs (th->th_ta_p->ph, pid, gregs) != PS_OK)
00043        return TD_ERR;
00044     }
00045 
00046   return TD_OK;
00047 }