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49 lines
1.6 KiB
C
49 lines
1.6 KiB
C
/* Which thread is running on an lwp?
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Copyright (C) 1999, 2001, 2002 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@redhat.com>, 1999.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include "thread_dbP.h"
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#include <tls.h>
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#include <sys/reg.h>
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td_err_e
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td_ta_map_lwp2thr (const td_thragent_t *ta, lwpid_t lwpid, td_thrhandle_t *th)
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{
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LOG ("td_ta_map_lwp2thr");
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/* Test whether the TA parameter is ok. */
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if (! ta_ok (ta))
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return TD_BADTA;
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prgregset_t regs;
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if (ps_lgetregs (ta->ph, lwpid, regs) != PS_OK)
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return TD_ERR;
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/* Get the thread area for the addressed thread. */
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if (ps_get_thread_area (ta->ph, lwpid, regs[GS] >> 3, &th->th_unique)
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!= PS_OK)
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return TD_ERR; /* XXX Other error value? */
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/* Found it. Now complete the `td_thrhandle_t' object. */
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th->th_ta_p = (td_thragent_t *) ta;
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return TD_OK;
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}
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