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/*
* Copyright (C) 2006-2019 Apple Inc. All rights reserved.
* Copyright (C) 2007-2009 Torch Mobile, Inc.
* Copyright (C) 2010, 2011 Research In Motion Limited. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#ifndef WTF_PLATFORM_GUARD_AGAINST_INDIRECT_INCLUSION
#error "Please #include <wtf/Platform.h> instead of this file directly."
#endif
#if defined(__APPLE__)
#include <Availability.h>
#include <AvailabilityMacros.h>
#include <TargetConditionals.h>
#endif
/* OS() - underlying operating system; only to be used for mandated low-level services like
virtual memory, not to choose a GUI toolkit */
#define OS(WTF_FEATURE) (defined WTF_OS_##WTF_FEATURE && WTF_OS_##WTF_FEATURE)
#define OS_CONSTANT(WTF_FEATURE) (WTF_OS_CONSTANT_##WTF_FEATURE)
/* ==== OS() - underlying operating system; only to be used for mandated low-level services like
virtual memory, not to choose a GUI toolkit ==== */
/* OS(AIX) - AIX */
#if defined(_AIX)
#define WTF_OS_AIX 1
#endif
/* OS(DARWIN) - Any Darwin-based OS, including macOS, iOS, macCatalyst, tvOS, and watchOS */
#if defined(__APPLE__)
#define WTF_OS_DARWIN 1
#endif
/* OS(IOS_FAMILY) - iOS family, including iOS, macCatalyst, tvOS, watchOS */
#if OS(DARWIN) && TARGET_OS_IPHONE
#define WTF_OS_IOS_FAMILY 1
#endif
/* OS(IOS) - iOS only, not including macCatalyst */
#if OS(DARWIN) && (TARGET_OS_IOS && !(defined(TARGET_OS_MACCATALYST) && TARGET_OS_MACCATALYST))
#define WTF_OS_IOS 1
#endif
/* OS(TVOS) - tvOS */
#if OS(DARWIN) && TARGET_OS_TV
#define WTF_OS_TVOS 1
#endif
/* OS(WATCHOS) - watchOS */
#if OS(DARWIN) && TARGET_OS_WATCH
#define WTF_OS_WATCHOS 1
#endif
/* FIXME: Rename this to drop the X, as that is no longer the name of the operating system. */
/* OS(MAC_OS_X) - macOS (not including iOS family) */
#if OS(DARWIN) && TARGET_OS_OSX
#define WTF_OS_MAC_OS_X 1
#endif
/* OS(FREEBSD) - FreeBSD */
#if defined(__FreeBSD__) || defined(__DragonFly__) || defined(__FreeBSD_kernel__)
#define WTF_OS_FREEBSD 1
#endif
/* OS(FUCHSIA) - Fuchsia */
#if defined(__Fuchsia__)
#define WTF_OS_FUCHSIA 1
#endif
/* OS(HURD) - GNU/Hurd */
#if defined(__GNU__)
#define WTF_OS_HURD 1
#endif
/* OS(LINUX) - Linux */
#if defined(__linux__)
#define WTF_OS_LINUX 1
#endif
/* OS(NETBSD) - NetBSD */
#if defined(__NetBSD__)
#define WTF_OS_NETBSD 1
#endif
/* OS(OPENBSD) - OpenBSD */
#if defined(__OpenBSD__)
#define WTF_OS_OPENBSD 1
#endif
/* OS(WINDOWS) - Any version of Windows */
#if defined(WIN32) || defined(_WIN32)
#define WTF_OS_WINDOWS 1
#endif
/* OS(UNIX) - Any Unix-like system */
#if OS(AIX) \
|| OS(DARWIN) \
|| OS(FREEBSD) \
|| OS(FUCHSIA) \
|| OS(HURD) \
|| OS(LINUX) \
|| OS(NETBSD) \
|| OS(OPENBSD) \
|| defined(unix) \
|| defined(__unix) \
|| defined(__unix__)
#define WTF_OS_UNIX 1
#endif
#if CPU(ADDRESS64)
#if (OS(IOS) || OS(TVOS) || OS(WATCHOS)) && CPU(ARM64)
#define WTF_OS_CONSTANT_EFFECTIVE_ADDRESS_WIDTH 36
#else
/* We strongly assume that effective address width is <= 48 in 64bit architectures (e.g. NaN boxing). */
#define WTF_OS_CONSTANT_EFFECTIVE_ADDRESS_WIDTH 48
#endif
#else
#define WTF_OS_CONSTANT_EFFECTIVE_ADDRESS_WIDTH 32
#endif
/* Asserts, invariants for macro definitions */
#define WTF_OS_WIN ERROR "USE WINDOWS WITH OS NOT WIN"
#define WTF_OS_MAC ERROR "USE MAC_OS_X WITH OS NOT MAC"