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76a50749 1/* Get a thread's general register set.
688903eb 2 Copyright (C) 1999-2018 Free Software Foundation, Inc.
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3 This file is part of the GNU C Library.
4 Contributed by Ulrich Drepper <drepper@redhat.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
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17 License along with the GNU C Library; if not, see
18 <http://www.gnu.org/licenses/>. */
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19
20#include "thread_dbP.h"
21
22
23td_err_e
7f08f55a 24td_thr_getgregs (const td_thrhandle_t *th, prgregset_t regset)
76a50749 25{
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26 psaddr_t cancelhandling, tid;
27 td_err_e err;
28
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29 LOG ("td_thr_getgregs");
30
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31 if (th->th_unique == 0)
32 /* Special case for the main thread before initialization. */
33 return ps_lgetregs (th->th_ta_p->ph, ps_getpid (th->th_ta_p->ph),
34 regset) != PS_OK ? TD_ERR : TD_OK;
35
76a50749 36 /* We have to get the state and the PID for this thread. */
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37 err = DB_GET_FIELD (cancelhandling, th->th_ta_p, th->th_unique, pthread,
38 cancelhandling, 0);
39 if (err != TD_OK)
40 return err;
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41
42 /* If the thread already terminated we return all zeroes. */
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43 if (((int) (uintptr_t) cancelhandling) & TERMINATED_BITMASK)
44 memset (regset, '\0', sizeof (*regset));
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45 /* Otherwise get the register content through the callback. */
46 else
47 {
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48 err = DB_GET_FIELD (tid, th->th_ta_p, th->th_unique, pthread, tid, 0);
49 if (err != TD_OK)
50 return err;
76a50749 51
7f08f55a 52 if (ps_lgetregs (th->th_ta_p->ph, (uintptr_t) tid, regset) != PS_OK)
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53 return TD_ERR;
54 }
55
56 return TD_OK;
57}