// 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;

	}