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41bdb6e20c
2001-07-06 Paul Eggert <eggert@twinsun.com> * manual/argp.texi: Remove ignored LGPL copyright notice; it's not appropriate for documentation anyway. * manual/libc-texinfo.sh: "Library General Public License" -> "Lesser General Public License". 2001-07-06 Andreas Jaeger <aj@suse.de> * All files under GPL/LGPL version 2: Place under LGPL version 2.1.
40 lines
1.4 KiB
C
40 lines
1.4 KiB
C
/* Copyright (C) 2001 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Martin Schwidefsky (schwidefsky@de.ibm.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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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <ucontext.h>
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extern int __getcontext (ucontext_t *__ucp) __THROW;
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extern int __setcontext (__const ucontext_t *__ucp) __THROW;
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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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/* Save the current machine context to oucp. */
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__getcontext (oucp);
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/* Modify oucp to skip the __setcontext call on reactivation. */
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oucp->uc_mcontext.gregs[14] = &&fake_return;
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/* Restore the machine context in ucp. */
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__setcontext (ucp);
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fake_return:
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return 0;
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}
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weak_alias (__swapcontext, swapcontext)
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