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diff --git a/nptl/unwind.c b/nptl/unwind.c
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+/* Copyright (C) 2003 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper@redhat.com>
+ and Richard Henderson <rth@redhat.com>, 2003.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <setjmp.h>
+#include <stdlib.h>
+#include "pthreadP.h"
+
+
+#ifdef HAVE_FORCED_UNWIND
+
+static _Unwind_Reason_Code
+unwind_stop (int version, _Unwind_Action actions,
+ _Unwind_Exception_Class exc_class,
+ struct _Unwind_Exception *exc_obj,
+ struct _Unwind_Context *context, void *stop_parameter)
+{
+ struct pthread_unwind_buf *buf = stop_parameter;
+
+ /* Do longjmp if we're at "end of stack", aka "end of unwind data".
+ We assume there are only C frame without unwind data in between
+ here and the jmp_buf target. Otherwise simply note that the CFA
+ of a function is NOT within it's stack frame; it's the SP of the
+ previous frame. */
+ if ((actions & _UA_END_OF_STACK)
+ || ! _JMPBUF_UNWINDS (buf->cancel_jmp_buf[0].jmp_buf,
+ _Unwind_GetCFA (context)))
+ __libc_longjmp ((struct __jmp_buf_tag *) buf->cancel_jmp_buf, 1);
+
+ return _URC_NO_REASON;
+}
+
+
+static void
+unwind_cleanup (_Unwind_Reason_Code reason, struct _Unwind_Exception *exc)
+{
+ /* Nothing to do. */
+}
+
+#endif /* have forced unwind */
+
+
+void
+__cleanup_fct_attribute __attribute ((noreturn))
+__pthread_unwind (__pthread_unwind_buf_t *buf)
+{
+ struct pthread_unwind_buf *ibuf = (struct pthread_unwind_buf *) buf;
+ struct pthread *self = THREAD_SELF;
+
+ /* Handle the compatibility stuff first. Execute all handlers
+ registered with the old method. We don't execute them in order,
+ instead, they will run first. */
+ struct _pthread_cleanup_buffer *oldp = ibuf->priv.data.cleanup;
+ struct _pthread_cleanup_buffer *curp = THREAD_GETMEM (self, cleanup);
+
+ while (curp != oldp)
+ {
+ /* Pointer to the next element. */
+ struct _pthread_cleanup_buffer *nextp = curp->__prev;
+
+ /* Call the handler. */
+ curp->__routine (curp->__arg);
+
+ /* To the next. */
+ curp = nextp;
+ }
+
+ /* Mark the current element as handled. */
+ THREAD_SETMEM (self, cleanup, curp);
+
+#ifdef HAVE_FORCED_UNWIND
+ /* This is not a catchable exception, so don't provide any details about
+ the exception type. We do need to initialize the field though. */
+ ibuf->priv.data.exc.exception_class = 0;
+ ibuf->priv.data.exc.exception_cleanup = unwind_cleanup;
+
+ _Unwind_ForcedUnwind (&ibuf->priv.data.exc, unwind_stop, ibuf);
+#else
+ /* We simply jump to the registered setjmp buffer. */
+ __libc_longjmp ((struct __jmp_buf_tag *) ibuf->cancel_jmp_buf, 1);
+#endif
+ /* NOTREACHED */
+
+ /* We better do not get here. */
+ abort ();
+}
+
+
+void
+__cleanup_fct_attribute __attribute ((noreturn))
+__pthread_unwind_next (__pthread_unwind_buf_t *buf)
+{
+ struct pthread_unwind_buf *ibuf = (struct pthread_unwind_buf *) buf;
+
+ __pthread_unwind (ibuf->priv.data.prev);
+}