kernel/eka/memmodel/epoc/direct/x86/xkernel.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Thu, 07 Jan 2010 13:38:45 +0200
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// Copyright (c) 1994-2009 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\memmodel\epoc\direct\x86\xkernel.cpp
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// 
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//
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#include <x86_mem.h>
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/********************************************
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 * Thread
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 ********************************************/
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TInt DX86PlatThread::SetupContext(SThreadCreateInfo& anInfo)
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	{
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	return KErrNone;
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	}
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DX86PlatProcess::DX86PlatProcess()
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	{}
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DX86PlatProcess::~DX86PlatProcess()
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	{
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	__KTRACE_OPT(KMMU,Kern::Printf("DX86PlatProcess destruct"));
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	DMemModelProcess::Destruct();
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	}
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TBool Exc::IsMagic(TLinAddr /*anAddress*/)
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//
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// Return TRUE if anAddress is a 'magic' exception handling instruction
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//
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	{
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	return EFalse;
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	}
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void DThread::IpcExcHandler(TExcTrap* aTrap, DThread* aThread, TAny* aContext)
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	{
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	aThread->iIpcClient = 0;
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	TIpcExcTrap& xt=*(TIpcExcTrap*)aTrap;
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	TX86ExcInfo& info=*(TX86ExcInfo*)aContext;
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	if (info.iExcId==EX86VectorPageFault)
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		{
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		TLinAddr va=(TLinAddr)info.iFaultAddress;
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		if (va>=xt.iRemoteBase && (va-xt.iRemoteBase)<xt.iSize)
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			xt.Exception(KErrBadDescriptor);	// problem accessing remote address - 'leave' so an error code will be returned
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		if (xt.iLocalBase && va>=xt.iLocalBase && (va-xt.iLocalBase)<xt.iSize)
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			NKern::UnlockSystem();		// problem accessing local address - return and panic current thread as usual
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		}
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	// otherwise return and fault kernel
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	}
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