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/* Copyright (C) 2001-2021 Free Software Foundation, Inc.
This file is part of the GNU C Library.
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
<https://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)
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