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[thirdparty/glibc.git] / nptl / sysdeps / unix / sysv / linux / sparc / sparc32 / pt-vfork.S

/* Copyright (C) 2004 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Jakub Jelinek <jakub@redhat.com>, 2004.

   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>

	.text
	.globl		__syscall_error
ENTRY(__vfork)
	ld	[%g7 + PID], %o5
	sub	%g0, %o5, %o4
	st	%o4, [%g7 + PID]

	LOADSYSCALL(vfork)
	ta	0x10
	bcc	2f
	 mov	%o7, %g1
	st	%o5, [%g7 + PID]
	call	__syscall_error
	 mov	%g1, %o7
2:	sub	%o1, 1, %o1
	andcc	%o0, %o1, %o0
	bne,a	1f
	 st	%o5, [%g7 + PID]
1:	retl
	 nop
END(__vfork)

weak_alias (__vfork, vfork)