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.
5
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.
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 Lesser General Public License for more details.
15
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, see
18 <http://www.gnu.org/licenses/>. */
19
20 #include "thread_dbP.h"
21
22
23 td_err_e
td_thr_getfpregs(const td_thrhandle_t * th,prfpregset_t * regset)24 td_thr_getfpregs (const td_thrhandle_t *th, prfpregset_t *regset)
25 {
26 struct _pthread_descr_struct pds;
27
28 LOG ("td_thr_getfpregs");
29
30 if (th->th_unique == NULL)
31 {
32 /* No data yet. Use the main thread. */
33 pid_t pid = ps_getpid (th->th_ta_p->ph);
34 if (ps_lgetfpregs (th->th_ta_p->ph, pid, regset) != PS_OK)
35 return TD_ERR;
36 return TD_OK;
37 }
38
39 /* We have to get the state and the PID for this thread. */
40 if (ps_pdread (th->th_ta_p->ph, th->th_unique, &pds,
41 sizeof (struct _pthread_descr_struct)) != PS_OK)
42 return TD_ERR;
43
44 /* If the thread already terminated we return all zeroes. */
45 if (pds.p_terminated)
46 memset (regset, '\0', sizeof (*regset));
47 /* Otherwise get the register content through the callback. */
48 else
49 {
50 pid_t pid = pds.p_pid ?: ps_getpid (th->th_ta_p->ph);
51
52 if (ps_lgetfpregs (th->th_ta_p->ph, pid, regset) != PS_OK)
53 return TD_ERR;
54 }
55
56 return TD_OK;
57 }
58