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// Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of the License "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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// e32\nkernsmp\x86\ncutilf.cpp
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//
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//
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#include <nkern.h>
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extern "C" {
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extern SVariantInterfaceBlock* VIB;
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}
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/******************************************************************************
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* Spin lock
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******************************************************************************/
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/** Create a spin lock
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@publishedPartner
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@released
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*/
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EXPORT_C TSpinLock::TSpinLock(TUint aOrder)
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{
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(void)aOrder;
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__NK_ASSERT_DEBUG( (aOrder==EOrderNone) || ((aOrder&0x7f)<0x20) );
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if (aOrder>=0x80 && aOrder!=EOrderNone)
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aOrder -= 0x60;
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aOrder |= 0xFF00u;
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iLock = TUint64(aOrder)<<48; // byte 6 = 00-1F for interrupt, 20-3F for preemption
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// byte 7 = FF if not held
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}
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/******************************************************************************
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* Read/Write Spin lock
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******************************************************************************/
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/** Create a spin lock
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@publishedPartner
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@released
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*/
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EXPORT_C TRWSpinLock::TRWSpinLock(TUint aOrder)
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{
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(void)aOrder;
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__NK_ASSERT_DEBUG( (aOrder==TSpinLock::EOrderNone) || ((aOrder&0x7f)<0x20) );
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if (aOrder>=0x80 && aOrder!=TSpinLock::EOrderNone)
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aOrder -= 0x60;
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aOrder |= 0xFF00u;
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iLock = TUint64(aOrder)<<48; // byte 6 = 00-1F for interrupt, 20-3F for preemption
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// byte 7 = FF if not held
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}
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/** Get the frequency of counter queried by NKern::Timestamp().
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*/
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EXPORT_C TUint32 NKern::TimestampFrequency()
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{
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return VIB->iTimestampFreq;
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}
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