2015-01-03 00:28:19 +08:00
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/* Copyright (C) 2001-2015 Free Software Foundation, Inc.
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2012-04-17 10:02:27 +08:00
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This file is part of the GNU C Library.
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Contributed by David Mosberger-Tang <davidm@hpl.hp.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
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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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2012-04-17 10:10:24 +08:00
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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2012-04-17 10:02:27 +08:00
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#include <ucontext.h>
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struct rv
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{
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long retval;
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long first_return;
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};
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extern struct rv __getcontext (ucontext_t *__ucp) __THROW;
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2012-04-17 10:21:32 +08:00
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extern int __setcontext (const ucontext_t *__ucp) __THROW;
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2012-04-17 10:02:27 +08:00
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int
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__swapcontext (ucontext_t *oucp, const ucontext_t *ucp)
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{
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struct rv rv = __getcontext (oucp);
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if (rv.first_return)
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__setcontext (ucp);
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return 0;
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}
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weak_alias (__swapcontext, swapcontext)
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