2005-02-07 Steven Munroe <sjmunroe@us.ibm.com>
[glibc/history.git] / linuxthreads_db / td_thr_getfpregs.c
blob31c55c876571390ac312e456baf232deb1457b1a
1 /* Get a thread's floating-point register set.
2 Copyright (C) 1999, 2001, 2003 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Ulrich Drepper <drepper@cygnus.com>, 1999.
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
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 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, write to the Free
18 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
19 02111-1307 USA. */
21 #include "thread_dbP.h"
24 td_err_e
25 td_thr_getfpregs (const td_thrhandle_t *th, prfpregset_t *regset)
27 struct _pthread_descr_struct pds;
29 LOG ("td_thr_getfpregs");
31 if (th->th_unique == NULL)
33 /* No data yet. Use the main thread. */
34 pid_t pid = ps_getpid (th->th_ta_p->ph);
35 if (ps_lgetfpregs (th->th_ta_p->ph, pid, regset) != PS_OK)
36 return TD_ERR;
37 return TD_OK;
40 /* We have to get the state and the PID for this thread. */
41 if (ps_pdread (th->th_ta_p->ph, th->th_unique, &pds,
42 sizeof (struct _pthread_descr_struct)) != PS_OK)
43 return TD_ERR;
45 /* If the thread already terminated we return all zeroes. */
46 if (pds.p_terminated)
47 memset (regset, '\0', sizeof (*regset));
48 /* Otherwise get the register content through the callback. */
49 else
51 pid_t pid = pds.p_pid ?: ps_getpid (th->th_ta_p->ph);
53 if (ps_lgetfpregs (th->th_ta_p->ph, pid, regset) != PS_OK)
54 return TD_ERR;
57 return TD_OK;