// Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies).

 // All rights reserved.

 // This component and the accompanying materials are made available

 // under the terms of the License "Eclipse Public License v1.0"

 // which accompanies this distribution, and is available

 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

 //

 // Initial Contributors:

 // Nokia Corporation - initial contribution.

 //

 // Contributors:

 //

 // Description:

 // e32\nkernsmp\x86\ncutilf.cpp

 // 

 //

 #include <nkern.h>

 extern "C" {

 extern SVariantInterfaceBlock* VIB;

 }

 /******************************************************************************

  * Spin lock

  ******************************************************************************/

 /** Create a spin lock

 	@publishedPartner

 	@released

 */

 EXPORT_C TSpinLock::TSpinLock(TUint aOrder)

 	{

 	(void)aOrder;

 	__NK_ASSERT_DEBUG( (aOrder==EOrderNone) || ((aOrder&0x7f)<0x20) );

 	if (aOrder>=0x80 && aOrder!=EOrderNone)

 		aOrder -= 0x60;

 	aOrder |= 0xFF00u;

 	iLock = TUint64(aOrder)<<48;	// byte 6 = 00-1F for interrupt, 20-3F for preemption

 									// byte 7 = FF if not held

 	}

 /******************************************************************************

  * Read/Write Spin lock

  ******************************************************************************/

 /** Create a spin lock

 	@publishedPartner

 	@released

 */

 EXPORT_C TRWSpinLock::TRWSpinLock(TUint aOrder)

 	{

 	(void)aOrder;

 	__NK_ASSERT_DEBUG( (aOrder==TSpinLock::EOrderNone) || ((aOrder&0x7f)<0x20) );

 	if (aOrder>=0x80 && aOrder!=TSpinLock::EOrderNone)

 		aOrder -= 0x60;

 	aOrder |= 0xFF00u;

 	iLock = TUint64(aOrder)<<48;	// byte 6 = 00-1F for interrupt, 20-3F for preemption

 									// byte 7 = FF if not held

 	}

 /** Get the frequency of counter queried by NKern::Timestamp().

 */

 EXPORT_C TUint32 NKern::TimestampFrequency()

 	{

 	return VIB->iTimestampFreq;

 	}