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/* Copyright (C) 2003 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-cancel.h>
.globl __vfork
.align 4
.ent __vfork,0
__LABEL(__vfork)
ldgp gp, 0(pv)
.prologue 1
PSEUDO_PROF
SINGLE_THREAD_P(t0)
#ifdef SHARED
bne t0, HIDDEN_JUMPTARGET (__fork) !samegp
#else
bne t0, $do_fork
#endif
lda v0, SYS_ify(vfork)
call_pal PAL_callsys
bne a3, SYSCALL_ERROR_LABEL
ret
#ifndef SHARED
/* Can't tail-call due to possible mismatch between GP in
fork and vfork object files. */
$do_fork:
subq sp, 16, sp
stq ra, 0(sp)
jsr ra, HIDDEN_JUMPTARGET (__fork)
ldgp gp, 0(ra)
ldq ra, 0(sp)
addq sp, 16, sp
ret
$syscall_error:
SYSCALL_ERROR_HANDLER
#endif
PSEUDO_END(__vfork)
libc_hidden_def (__vfork)
weak_alias (__vfork, vfork)
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