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3142b1ac55
2006-05-07 Ulrich Drepper <drepper@redhat.com> * sysdeps/unix/sysv/linux/ia64/unwind-forcedunwind.c: Make sure functions pointer is reloaded after pthread_cancel_init calls. [BZ #2644] * sysdeps/pthread/unwind-forcedunwind.c: Make sure functions pointers are reloaded after pthread_cancel_init calls.
43 lines
1.5 KiB
C
43 lines
1.5 KiB
C
/* Copyright (C) 2003, 2006 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Jakub Jelinek <jakub@redhat.com>.
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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 License as
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published by the Free Software Foundation; either version 2.1 of the
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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; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <dlfcn.h>
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#include <stdio.h>
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#include <unwind.h>
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#include <pthreadP.h>
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static _Unwind_Word (*libgcc_s_getbsp) (struct _Unwind_Context *);
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#define ARCH_CANCEL_INIT(handle) \
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((libgcc_s_getbsp = __libc_dlsym (handle, "_Unwind_GetBSP")) == NULL)
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#include <sysdeps/pthread/unwind-forcedunwind.c>
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_Unwind_Word
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_Unwind_GetBSP (struct _Unwind_Context *context)
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{
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if (__builtin_expect (libgcc_s_getbsp == NULL, 0))
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{
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pthread_cancel_init ();
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/* The function pointer has changed, ensure we reload it. */
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asm volatile ("" : "+m" (libgcc_s_getbsp));
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}
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return libgcc_s_getbsp (context);
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}
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