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/* Copyright (C) 1999-2025 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 <sysdep.h>
#define _ERRNO_H 1
#include <bits/errno.h>
/* Clone the calling process, but without copying the whole address space.
The calling process is suspended until the new process exits or is
replaced by a call to `execve'. Return -1 for errors, 0 to the new process,
and the process ID of the new process to the old process. */
ENTRY (__vfork)
ble 0x100(%sr2, %r0)
ldi __NR_vfork, %r20
ldi -4096, %r1
comclr,<< %r1, %ret0, %r0 /* Note: unsigned compare. */
bv,n %r0(%rp)
/* Something bad happened -- no child created -- we need a frame */
ldo 64(%sp), %sp
.cfi_def_cfa_offset -64
/* Set errno */
bl __syscall_error, %rp
sub %r0, %ret0, %arg0
/* ret0 is set to -1 by __syscall_error */
ldw -84(%sp), %rp
bv %r0(%rp)
ldo -64(%sp), %sp
PSEUDO_END (__vfork)
libc_hidden_def (__vfork)
weak_alias (__vfork, vfork)
strong_alias (__vfork, __libc_vfork)
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