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/* Copyright (C) 2004-2014 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
<http://www.gnu.org/licenses/>. */
#include <sysdep.h>
#include <tcb-offsets.h>
#undef PSEUDO_PREPARE_ARGS
#define PSEUDO_PREPARE_ARGS \
/* Load the current cached pid value across the vfork. */ \
rduniq; \
ldl a2, PID_OFFSET(v0); \
mov v0, a1; \
/* If the cached value is initialized (nonzero), then write \
back its negation, or INT_MIN, to indicate that the pid \
value is uninitialized in the child, and in the window \
between here and the point at which we restore the value. */ \
ldah t0, -0x8000; \
negl a2, t1; \
cmovne a2, t1, t0; \
stl t0, PID_OFFSET(v0);
PSEUDO (__vfork, vfork, 0)
/* If we're back in the parent, restore the saved pid. */
beq v0, 1f
stl a2, PID_OFFSET(a1)
1: ret
PSEUDO_END (__vfork)
libc_hidden_def (__vfork)
weak_alias (__vfork, vfork)
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