/* Copyright (C) 2001-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

     Contributed by David Mosberger-Tang <davidm@hpl.hp.com>.

   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, see

   <http://www.gnu.org/licenses/>.  */

#include <ucontext.h>

struct rv

  {

    long retval;

    long first_return;

  };

extern struct rv __getcontext (ucontext_t *__ucp) __THROW;

extern int __setcontext (const ucontext_t *__ucp) __THROW;

int

__swapcontext (ucontext_t *oucp, const ucontext_t *ucp)

{

  struct rv rv = __getcontext (oucp);

  if (rv.first_return)

    __setcontext (ucp);

  return 0;

}

weak_alias (__swapcontext, swapcontext)