glibc/linuxthreads_db/td_thr_getgregs.c

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/* Get a thread's general register set.
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Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1999.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include "thread_dbP.h"
td_err_e
td_thr_getgregs (const td_thrhandle_t *th, prgregset_t gregs)
{
struct _pthread_descr_struct pds;
LOG (__FUNCTION__);
/* 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. */
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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;
}