1 /* Set a thread's floating-point register set.
2 Copyright (C) 1999-2022 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19 #include "thread_dbP.h"
20
21
22 td_err_e
td_thr_setfpregs(const td_thrhandle_t * th,const prfpregset_t * fpregs)23 td_thr_setfpregs (const td_thrhandle_t *th, const prfpregset_t *fpregs)
24 {
25 psaddr_t cancelhandling, tid;
26 td_err_e err;
27
28 LOG ("td_thr_setfpregs");
29
30 if (th->th_unique == 0)
31 /* Special case for the main thread before initialization. */
32 return ps_lsetfpregs (th->th_ta_p->ph, ps_getpid (th->th_ta_p->ph),
33 fpregs) != PS_OK ? TD_ERR : TD_OK;
34
35 /* We have to get the state and the PID for this thread. */
36 err = DB_GET_FIELD (cancelhandling, th->th_ta_p, th->th_unique, pthread,
37 cancelhandling, 0);
38 if (err != TD_OK)
39 return err;
40
41 /* Only set the registers if the thread hasn't yet terminated. */
42 if ((((int) (uintptr_t) cancelhandling) & TERMINATED_BITMASK) == 0)
43 {
44 err = DB_GET_FIELD (tid, th->th_ta_p, th->th_unique, pthread, tid, 0);
45 if (err != TD_OK)
46 return err;
47
48 if (ps_lsetfpregs (th->th_ta_p->ph, (uintptr_t) tid, fpregs) != PS_OK)
49 return TD_ERR;
50 }
51
52 return TD_OK;
53 }
54