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diff --git a/src/corelib/arch/qatomic_windows.h b/src/corelib/arch/qatomic_windows.h
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+++ b/src/corelib/arch/qatomic_windows.h
@@ -0,0 +1,496 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtCore module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QATOMIC_WINDOWS_H
+#define QATOMIC_WINDOWS_H
+
+#ifndef Q_CC_MSVC
+
+// Mingw and other GCC platforms get inline assembly
+
+# ifdef __i386__
+#  include "QtCore/qatomic_i386.h"
+# else
+#  include "QtCore/qatomic_x86_64.h"
+# endif
+
+#else // Q_CC_MSVC
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+
+#ifndef Q_OS_WINCE
+
+// use compiler intrinsics for all atomic functions
+# define QT_INTERLOCKED_PREFIX _
+# define QT_INTERLOCKED_PROTOTYPE __cdecl
+# define QT_INTERLOCKED_DECLARE_PROTOTYPES
+# define QT_INTERLOCKED_INTRINSIC
+
+#else // Q_OS_WINCE
+
+# if _WIN32_WCE < 0x600 && defined(_X86_)
+// For X86 Windows CE, include winbase.h to catch inline functions which
+// override the regular definitions inside of coredll.dll.
+// Though one could use the original version of Increment/Decrement, others are
+// not exported at all.
+#  include <winbase.h>
+
+// It's safer to remove the volatile and let the compiler add it as needed.
+#  define QT_INTERLOCKED_NO_VOLATILE
+
+# else // _WIN32_WCE >= 0x600 || !_X86_
+
+#  define QT_INTERLOCKED_PROTOTYPE __cdecl
+#  define QT_INTERLOCKED_DECLARE_PROTOTYPES
+
+#  if _WIN32_WCE >= 0x600
+#   if defined(_X86_)
+#    define QT_INTERLOCKED_PREFIX _
+#    define QT_INTERLOCKED_INTRINSIC
+#   endif
+#  else
+#   define QT_INTERLOCKED_NO_VOLATILE
+#  endif
+
+# endif // _WIN32_WCE >= 0x600 || !_X86_
+
+#endif // Q_OS_WINCE
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+// Prototype declaration
+
+#define QT_INTERLOCKED_CONCAT_I(prefix, suffix) \
+    prefix ## suffix
+#define QT_INTERLOCKED_CONCAT(prefix, suffix) \
+    QT_INTERLOCKED_CONCAT_I(prefix, suffix)
+
+// MSVC intrinsics prefix function names with an underscore. Also, if platform
+// SDK headers have been included, the Interlocked names may be defined as
+// macros.
+// To avoid double underscores, we paste the prefix with Interlocked first and
+// then the remainder of the function name.
+#define QT_INTERLOCKED_FUNCTION(name) \
+    QT_INTERLOCKED_CONCAT( \
+        QT_INTERLOCKED_CONCAT(QT_INTERLOCKED_PREFIX, Interlocked), name)
+
+#ifdef QT_INTERLOCKED_NO_VOLATILE
+# define QT_INTERLOCKED_VOLATILE
+# define QT_INTERLOCKED_REMOVE_VOLATILE(a) qt_interlocked_remove_volatile(a)
+#else
+# define QT_INTERLOCKED_VOLATILE volatile
+# define QT_INTERLOCKED_REMOVE_VOLATILE(a) a
+#endif
+
+#ifndef QT_INTERLOCKED_PREFIX
+#define QT_INTERLOCKED_PREFIX
+#endif
+
+#ifndef QT_INTERLOCKED_PROTOTYPE
+#define QT_INTERLOCKED_PROTOTYPE
+#endif
+
+#ifdef QT_INTERLOCKED_DECLARE_PROTOTYPES
+#undef QT_INTERLOCKED_DECLARE_PROTOTYPES
+
+extern "C" {
+
+    long QT_INTERLOCKED_PROTOTYPE QT_INTERLOCKED_FUNCTION( Increment )(long QT_INTERLOCKED_VOLATILE *);
+    long QT_INTERLOCKED_PROTOTYPE QT_INTERLOCKED_FUNCTION( Decrement )(long QT_INTERLOCKED_VOLATILE *);
+    long QT_INTERLOCKED_PROTOTYPE QT_INTERLOCKED_FUNCTION( CompareExchange )(long QT_INTERLOCKED_VOLATILE *, long, long);
+    long QT_INTERLOCKED_PROTOTYPE QT_INTERLOCKED_FUNCTION( Exchange )(long QT_INTERLOCKED_VOLATILE *, long);
+    long QT_INTERLOCKED_PROTOTYPE QT_INTERLOCKED_FUNCTION( ExchangeAdd )(long QT_INTERLOCKED_VOLATILE *, long);
+
+# if !defined(Q_OS_WINCE) && !defined(__i386__) && !defined(_M_IX86)
+    void * QT_INTERLOCKED_FUNCTION( CompareExchangePointer )(void * QT_INTERLOCKED_VOLATILE *, void *, void *);
+    void * QT_INTERLOCKED_FUNCTION( ExchangePointer )(void * QT_INTERLOCKED_VOLATILE *, void *);
+    __int64 QT_INTERLOCKED_FUNCTION( ExchangeAdd64 )(__int64 QT_INTERLOCKED_VOLATILE *, __int64);
+# endif
+
+}
+
+#endif // QT_INTERLOCKED_DECLARE_PROTOTYPES
+
+#undef QT_INTERLOCKED_PROTOTYPE
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+
+#ifdef QT_INTERLOCKED_INTRINSIC
+#undef QT_INTERLOCKED_INTRINSIC
+
+# pragma intrinsic (_InterlockedIncrement)
+# pragma intrinsic (_InterlockedDecrement)
+# pragma intrinsic (_InterlockedExchange)
+# pragma intrinsic (_InterlockedCompareExchange)
+# pragma intrinsic (_InterlockedExchangeAdd)
+
+# if !defined(Q_OS_WINCE) && !defined(_M_IX86)
+#  pragma intrinsic (_InterlockedCompareExchangePointer)
+#  pragma intrinsic (_InterlockedExchangePointer)
+#  pragma intrinsic (_InterlockedExchangeAdd64)
+# endif
+
+#endif // QT_INTERLOCKED_INTRINSIC
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+// Interlocked* replacement macros
+
+#define QT_INTERLOCKED_INCREMENT(value) \
+    QT_INTERLOCKED_FUNCTION( Increment )( \
+            QT_INTERLOCKED_REMOVE_VOLATILE( value ) )
+
+#define QT_INTERLOCKED_DECREMENT(value) \
+    QT_INTERLOCKED_FUNCTION( Decrement )( \
+            QT_INTERLOCKED_REMOVE_VOLATILE( value ) )
+
+#define QT_INTERLOCKED_COMPARE_EXCHANGE(value, newValue, expectedValue) \
+    QT_INTERLOCKED_FUNCTION( CompareExchange )( \
+            QT_INTERLOCKED_REMOVE_VOLATILE( value ), \
+            newValue, \
+            expectedValue )
+
+#define QT_INTERLOCKED_EXCHANGE(value, newValue) \
+    QT_INTERLOCKED_FUNCTION( Exchange )( \
+            QT_INTERLOCKED_REMOVE_VOLATILE( value ), \
+            newValue )
+
+#define QT_INTERLOCKED_EXCHANGE_ADD(value, valueToAdd) \
+    QT_INTERLOCKED_FUNCTION( ExchangeAdd )( \
+            QT_INTERLOCKED_REMOVE_VOLATILE( value ), \
+            valueToAdd )
+
+#if defined(Q_OS_WINCE) || defined(__i386__) || defined(_M_IX86)
+
+# define QT_INTERLOCKED_COMPARE_EXCHANGE_POINTER(value, newValue, expectedValue) \
+    reinterpret_cast<void *>( \
+        QT_INTERLOCKED_FUNCTION( CompareExchange )( \
+                QT_INTERLOCKED_REMOVE_VOLATILE( value ## _integral ), \
+                (long)( newValue ), \
+                (long)( expectedValue ) ))
+
+# define QT_INTERLOCKED_EXCHANGE_POINTER(value, newValue) \
+    QT_INTERLOCKED_FUNCTION( Exchange )( \
+            QT_INTERLOCKED_REMOVE_VOLATILE( value ## _integral ), \
+            (quintptr)( newValue ) )
+
+# define QT_INTERLOCKED_EXCHANGE_ADD_POINTER(value, valueToAdd) \
+    QT_INTERLOCKED_FUNCTION( ExchangeAdd )( \
+            QT_INTERLOCKED_REMOVE_VOLATILE( value ## _integral ), \
+            valueToAdd )
+
+#else // !defined(Q_OS_WINCE) && !defined(__i386__) && !defined(_M_IX86)
+
+# define QT_INTERLOCKED_COMPARE_EXCHANGE_POINTER(value, newValue, expectedValue) \
+    QT_INTERLOCKED_FUNCTION( CompareExchangePointer )( \
+            reinterpret_cast<void * QT_INTERLOCKED_VOLATILE *>( QT_INTERLOCKED_REMOVE_VOLATILE( value ) ), \
+            newValue, \
+            expectedValue )
+
+# define QT_INTERLOCKED_EXCHANGE_POINTER(value, newValue) \
+    QT_INTERLOCKED_FUNCTION( ExchangePointer )( \
+            reinterpret_cast<void * QT_INTERLOCKED_VOLATILE *>( QT_INTERLOCKED_REMOVE_VOLATILE( value ) ), \
+            newValue )
+
+# define QT_INTERLOCKED_EXCHANGE_ADD_POINTER(value, valueToAdd) \
+    QT_INTERLOCKED_FUNCTION( ExchangeAdd64 )( \
+            QT_INTERLOCKED_REMOVE_VOLATILE( value ## _integral ), \
+            valueToAdd )
+
+#endif // !defined(Q_OS_WINCE) && !defined(__i386__) && !defined(_M_IX86)
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+#define Q_ATOMIC_INT_REFERENCE_COUNTING_IS_ALWAYS_NATIVE
+#define Q_ATOMIC_INT_REFERENCE_COUNTING_IS_WAIT_FREE
+
+inline bool QBasicAtomicInt::isReferenceCountingNative()
+{ return true; }
+inline bool QBasicAtomicInt::isReferenceCountingWaitFree()
+{ return true; }
+
+#define Q_ATOMIC_INT_TEST_AND_SET_IS_ALWAYS_NATIVE
+#define Q_ATOMIC_INT_TEST_AND_SET_IS_WAIT_FREE
+
+inline bool QBasicAtomicInt::isTestAndSetNative()
+{ return true; }
+inline bool QBasicAtomicInt::isTestAndSetWaitFree()
+{ return true; }
+
+#define Q_ATOMIC_INT_FETCH_AND_STORE_IS_ALWAYS_NATIVE
+#define Q_ATOMIC_INT_FETCH_AND_STORE_IS_WAIT_FREE
+
+inline bool QBasicAtomicInt::isFetchAndStoreNative()
+{ return true; }
+inline bool QBasicAtomicInt::isFetchAndStoreWaitFree()
+{ return true; }
+
+#define Q_ATOMIC_INT_FETCH_AND_ADD_IS_ALWAYS_NATIVE
+#define Q_ATOMIC_INT_FETCH_AND_ADD_IS_WAIT_FREE
+
+inline bool QBasicAtomicInt::isFetchAndAddNative()
+{ return true; }
+inline bool QBasicAtomicInt::isFetchAndAddWaitFree()
+{ return true; }
+
+#define Q_ATOMIC_POINTER_TEST_AND_SET_IS_ALWAYS_NATIVE
+#define Q_ATOMIC_POINTER_TEST_AND_SET_IS_WAIT_FREE
+
+template <typename T>
+Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isTestAndSetNative()
+{ return true; }
+template <typename T>
+Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isTestAndSetWaitFree()
+{ return true; }
+
+#define Q_ATOMIC_POINTER_FETCH_AND_STORE_IS_ALWAYS_NATIVE
+#define Q_ATOMIC_POINTER_FETCH_AND_STORE_IS_WAIT_FREE
+
+template <typename T>
+Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndStoreNative()
+{ return true; }
+template <typename T>
+Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndStoreWaitFree()
+{ return true; }
+
+#define Q_ATOMIC_POINTER_FETCH_AND_ADD_IS_ALWAYS_NATIVE
+#define Q_ATOMIC_POINTER_FETCH_AND_ADD_IS_WAIT_FREE
+template <typename T>
+Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndAddNative()
+{ return true; }
+template <typename T>
+Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndAddWaitFree()
+{ return true; }
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+
+#ifdef QT_INTERLOCKED_NO_VOLATILE
+template <class T>
+Q_INLINE_TEMPLATE T *qt_interlocked_remove_volatile(T volatile *t)
+{
+    return const_cast<T *>(t);
+}
+#endif // !QT_INTERLOCKED_NO_VOLATILE
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+
+inline bool QBasicAtomicInt::ref()
+{
+    return QT_INTERLOCKED_INCREMENT(&_q_value) != 0;
+}
+
+inline bool QBasicAtomicInt::deref()
+{
+    return QT_INTERLOCKED_DECREMENT(&_q_value) != 0;
+}
+
+inline bool QBasicAtomicInt::testAndSetOrdered(int expectedValue, int newValue)
+{
+    return QT_INTERLOCKED_COMPARE_EXCHANGE(&_q_value, newValue, expectedValue)
+            == expectedValue;
+}
+
+inline int QBasicAtomicInt::fetchAndStoreOrdered(int newValue)
+{
+    return QT_INTERLOCKED_EXCHANGE(&_q_value, newValue);
+}
+
+inline int QBasicAtomicInt::fetchAndAddOrdered(int valueToAdd)
+{
+    return QT_INTERLOCKED_EXCHANGE_ADD(&_q_value, valueToAdd);
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+
+template <typename T>
+Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetOrdered(T *expectedValue, T *newValue)
+{
+    return QT_INTERLOCKED_COMPARE_EXCHANGE_POINTER(&_q_value, newValue, expectedValue)
+            == expectedValue;
+}
+
+template <typename T>
+Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndStoreOrdered(T* newValue)
+{
+    return reinterpret_cast<T *>(
+            QT_INTERLOCKED_EXCHANGE_POINTER(&_q_value, newValue));
+}
+
+template <typename T>
+Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndAddOrdered(qptrdiff valueToAdd)
+{
+    return reinterpret_cast<T *>(
+            QT_INTERLOCKED_EXCHANGE_ADD_POINTER(&_q_value, valueToAdd * sizeof(T)));
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+
+inline bool QBasicAtomicInt::testAndSetRelaxed(int expectedValue, int newValue)
+{
+    return testAndSetOrdered(expectedValue, newValue);
+}
+
+inline bool QBasicAtomicInt::testAndSetAcquire(int expectedValue, int newValue)
+{
+    return testAndSetOrdered(expectedValue, newValue);
+}
+
+inline bool QBasicAtomicInt::testAndSetRelease(int expectedValue, int newValue)
+{
+    return testAndSetOrdered(expectedValue, newValue);
+}
+
+inline int QBasicAtomicInt::fetchAndStoreRelaxed(int newValue)
+{
+    return fetchAndStoreOrdered(newValue);
+}
+
+inline int QBasicAtomicInt::fetchAndStoreAcquire(int newValue)
+{
+    return fetchAndStoreOrdered(newValue);
+}
+
+inline int QBasicAtomicInt::fetchAndStoreRelease(int newValue)
+{
+    return fetchAndStoreOrdered(newValue);
+}
+
+inline int QBasicAtomicInt::fetchAndAddRelaxed(int valueToAdd)
+{
+    return fetchAndAddOrdered(valueToAdd);
+}
+
+inline int QBasicAtomicInt::fetchAndAddAcquire(int valueToAdd)
+{
+    return fetchAndAddOrdered(valueToAdd);
+}
+
+inline int QBasicAtomicInt::fetchAndAddRelease(int valueToAdd)
+{
+    return fetchAndAddOrdered(valueToAdd);
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+
+template <typename T>
+Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetRelaxed(T *expectedValue, T *newValue)
+{
+    return testAndSetOrdered(expectedValue, newValue);
+}
+
+template <typename T>
+Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetAcquire(T *expectedValue, T *newValue)
+{
+    return testAndSetOrdered(expectedValue, newValue);
+}
+
+template <typename T>
+Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetRelease(T *expectedValue, T *newValue)
+{
+    return testAndSetOrdered(expectedValue, newValue);
+}
+
+template <typename T>
+Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndStoreRelaxed(T *newValue)
+{
+    return fetchAndStoreOrdered(newValue);
+}
+
+template <typename T>
+Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndStoreAcquire(T *newValue)
+{
+    return fetchAndStoreOrdered(newValue);
+}
+
+template <typename T>
+Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndStoreRelease(T *newValue)
+{
+    return fetchAndStoreOrdered(newValue);
+}
+
+template <typename T>
+Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndAddRelaxed(qptrdiff valueToAdd)
+{
+    return fetchAndAddOrdered(valueToAdd);
+}
+
+template <typename T>
+Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndAddAcquire(qptrdiff valueToAdd)
+{
+    return fetchAndAddOrdered(valueToAdd);
+}
+
+template <typename T>
+Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndAddRelease(qptrdiff valueToAdd)
+{
+    return fetchAndAddOrdered(valueToAdd);
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+// Cleanup
+
+#undef QT_INTERLOCKED_CONCAT_I
+#undef QT_INTERLOCKED_CONCAT
+#undef QT_INTERLOCKED_FUNCTION
+#undef QT_INTERLOCKED_PREFIX
+
+#undef QT_INTERLOCKED_NO_VOLATILE
+#undef QT_INTERLOCKED_VOLATILE
+#undef QT_INTERLOCKED_REMOVE_VOLATILE
+
+#undef QT_INTERLOCKED_INCREMENT
+#undef QT_INTERLOCKED_DECREMENT
+#undef QT_INTERLOCKED_COMPARE_EXCHANGE
+#undef QT_INTERLOCKED_EXCHANGE
+#undef QT_INTERLOCKED_EXCHANGE_ADD
+#undef QT_INTERLOCKED_COMPARE_EXCHANGE_POINTER
+#undef QT_INTERLOCKED_EXCHANGE_POINTER
+#undef QT_INTERLOCKED_EXCHANGE_ADD_POINTER
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // Q_CC_MSVC
+
+#endif // QATOMIC_WINDOWS_H