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[glibc/history.git] / nptl_db / td_thr_getgregs.c
blob8d83a800f6188939077969702466e985b80d9fca
1 /* Get a thread's general register set.
2 Copyright (C) 1999, 2000, 2001, 2002, 2003, 2007 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Ulrich Drepper <drepper@redhat.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_getgregs (const td_thrhandle_t *th, prgregset_t regset)
27 psaddr_t cancelhandling, tid;
28 td_err_e err;
30 LOG ("td_thr_getgregs");
32 if (th->th_unique == 0)
33 /* Special case for the main thread before initialization. */
34 return ps_lgetregs (th->th_ta_p->ph, ps_getpid (th->th_ta_p->ph),
35 regset) != PS_OK ? TD_ERR : TD_OK;
37 /* We have to get the state and the PID for this thread. */
38 err = DB_GET_FIELD (cancelhandling, th->th_ta_p, th->th_unique, pthread,
39 cancelhandling, 0);
40 if (err != TD_OK)
41 return err;
43 /* If the thread already terminated we return all zeroes. */
44 if (((int) (uintptr_t) cancelhandling) & TERMINATED_BITMASK)
45 memset (regset, '\0', sizeof (*regset));
46 /* Otherwise get the register content through the callback. */
47 else
49 err = DB_GET_FIELD (tid, th->th_ta_p, th->th_unique, pthread, tid, 0);
50 if (err != TD_OK)
51 return err;
53 if (ps_lgetregs (th->th_ta_p->ph, (uintptr_t) tid, regset) != PS_OK)
54 return TD_ERR;
57 return TD_OK;