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/* Copyright (C) 1991-1992, 1994-1995, 1997, 2002 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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <sysdep.h>
.text;
ENTRY (__rfork)
/* save the return PC value into RSI */
movq 0(%rsp), %rsi;
DO_CALL (rfork, 1)
jb SYSCALL_ERROR_LABEL;
/* R1 is now 0 for the parent and 1 for the child. Decrement it to
make it -1 (all bits set) for the parent, and 0 (no bits set)
for the child. Then AND it with R0, so the parent gets
R0&-1==R0, and the child gets R0&0==0. */
decq %rdx
andq %rdx, %rax
popq %rdx
cfi_adjust_cfa_offset(-8)
jmp *%rsi
L(pseudo_end):
ret
PSEUDO_END (__rfork)
weak_alias (__rfork, rfork)
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