/** @file
 * IPRT - stdarg.h wrapper.
 */

/*
 * Copyright (C) 2006-2023 Oracle and/or its affiliates.
 *
 * This file is part of VirtualBox base platform packages, as
 * available from https://www.virtualbox.org.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation, in version 3 of the
 * License.
 *
 * This program 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
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see <https://www.gnu.org/licenses>.
 *
 * The contents of this file may alternatively be used under the terms
 * of the Common Development and Distribution License Version 1.0
 * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
 * in the VirtualBox distribution, in which case the provisions of the
 * CDDL are applicable instead of those of the GPL.
 *
 * You may elect to license modified versions of this file under the
 * terms and conditions of either the GPL or the CDDL or both.
 *
 * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
 */

#ifndef IPRT_INCLUDED_stdarg_h
#define IPRT_INCLUDED_stdarg_h
#ifndef RT_WITHOUT_PRAGMA_ONCE
# pragma once
#endif

#ifdef IPRT_NO_CRT
# include <iprt/types.h>
# include <iprt/nocrt/compiler/compiler.h>
#else
# include <iprt/cdefs.h>
# if defined(RT_OS_FREEBSD) && defined(_KERNEL)
#  include <machine/stdarg.h>
# elif defined(RT_OS_NETBSD) && defined(_KERNEL)
#  include <sys/stdarg.h>
# elif defined(RT_OS_SOLARIS) && defined(_KERNEL) && defined(__GNUC__)
#  include <stdarg.h>
#  if __GNUC__ >= 4 /* System headers refers to __builtin_stdarg_start. */
#   define __builtin_stdarg_start __builtin_va_start
#  endif
# elif defined(RT_OS_LINUX) && defined(IN_RING0)
#  include "linux/version.h"
#  if RTLNX_VER_MIN(5,15,0) || RTLNX_RHEL_MAJ_PREREQ(9,1)
#   include <linux/stdarg.h>
#  else
#   include <stdarg.h>
#  endif
# else
#  include <stdarg.h>
# endif
#endif

/*
 * Older MSC versions doesn't implement va_copy.  Newer (12.0+?) ones does
 * implement it like below, but for now it's easier to continue like for the
 * older ones so we can more easily handle R0, RC and other weird contexts.
 */
#if !defined(va_copy) || defined(_MSC_VER)
# undef  va_copy
# define va_copy(dst, src) do { (dst) = (src); } while (0) /** @todo check AMD64 */
#endif

#endif /* !IPRT_INCLUDED_stdarg_h */