--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/kernel/eka/memmodel/epoc/direct/mprocess.cpp	Mon Oct 19 15:55:17 2009 +0100
@@ -0,0 +1,287 @@
+// Copyright (c) 1994-2009 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\memmodel\epoc\direct\mprocess.cpp
+// 
+//
+
+#include <memmodel.h>
+#include <kernel/cache.h>
+
+#define iMState		iWaitLink.iSpare1
+
+_LIT(KDollarDat,"$DAT");
+
+/********************************************
+ * Process
+ ********************************************/
+void DMemModelProcess::Destruct()
+	{
+	DProcess::Destruct();
+	}
+
+TInt DMemModelProcess::NewChunk(DChunk*& aChunk, SChunkCreateInfo& aInfo, TLinAddr& aRunAddr)
+	{
+	aChunk=NULL;
+	DMemModelChunk* pC=new DMemModelChunk;
+	if (!pC)
+		return KErrNoMemory;
+	pC->iChunkType=aInfo.iType;
+	if (!aInfo.iGlobal && (iAttributes & DMemModelProcess::EPrivate)!=0)
+		pC->iAttributes |= DMemModelChunk::EPrivate;
+	pC->iOwningProcess=(aInfo.iGlobal)?NULL:this;
+	TInt r=pC->Create(aInfo);
+	if (r==KErrNone && (aInfo.iOperations & SChunkCreateInfo::EAdjust))
+		{
+		if (aInfo.iRunAddress!=0)
+			pC->SetFixedAddress(aInfo.iRunAddress,aInfo.iPreallocated);
+		if (aInfo.iPreallocated==0)
+			{
+			if (pC->iAttributes & DChunk::EDisconnected)
+				{
+				r=pC->Commit(aInfo.iInitialBottom,aInfo.iInitialTop-aInfo.iInitialBottom);
+				}
+			else if (pC->iAttributes & DChunk::EDoubleEnded)
+				{
+				r=pC->AdjustDoubleEnded(aInfo.iInitialBottom,aInfo.iInitialTop);
+				}
+			else
+				{
+				r=pC->Adjust(aInfo.iInitialTop);
+				}
+			}
+		if (r==KErrNone)
+			{
+			aRunAddr=(TLinAddr)pC->Base();
+			}
+		}
+	if (r==KErrNone)
+		{
+		pC->iDestroyedDfc = aInfo.iDestroyedDfc;
+		aChunk=(DChunk*)pC;
+		}
+	else
+		pC->Close(NULL);	// NULL since chunk can't have been added to process
+	return r;
+	}
+
+TInt DMemModelProcess::DoCreate(TBool aKernelProcess, TProcessCreateInfo&)
+	{
+	__KTRACE_OPT(KPROC,Kern::Printf("DMemModelProcess::DoCreate %O",this))
+	if (aKernelProcess)
+		iAttributes=ESupervisor|EPrivate;
+	else
+		iAttributes=0;
+	return KErrNone;
+	}
+
+TInt DMemModelProcess::CreateDataBssStackArea(TProcessCreateInfo& aInfo)
+	{
+	__KTRACE_OPT(KPROC,Kern::Printf("DMemModelProcess::CreateDataBssStackArea %O",this));
+	TInt dataBssSize=MM::RoundToBlockSize(aInfo.iTotalDataSize);
+	TInt r=KErrNone;
+	DMemModelCodeSeg* cs=(DMemModelCodeSeg*)iTempCodeSeg;
+	if (!cs->iXIP && dataBssSize)
+		{
+		// only RAM loaded processes need data chunks
+		// ROM processes have their .data/.bss areas reserved by ROMBUILD
+		SChunkCreateInfo cinfo;
+		cinfo.iGlobal=EFalse;
+		cinfo.iAtt=TChunkCreate::ENormal;
+		cinfo.iForceFixed=EFalse;
+		cinfo.iOperations=SChunkCreateInfo::EAdjust|SChunkCreateInfo::EAdd;
+		cinfo.iType=EUserData;
+		cinfo.iMaxSize=dataBssSize;
+		cinfo.iInitialBottom=0;
+		cinfo.iInitialTop=dataBssSize;
+		cinfo.iPreallocated=0;
+		cinfo.iName.Set(KDollarDat);
+		cinfo.iOwner=this;
+		cinfo.iRunAddress=0;
+		r=NewChunk((DChunk*&)iDataBssStackChunk, cinfo, iDataBssRunAddress);
+		__KTRACE_OPT(KPROC,Kern::Printf("RAM process, ret=%d, data at %08x+%x",r,iDataBssRunAddress,dataBssSize));
+		}
+	else if (cs->iXIP)
+		{
+		iDataBssRunAddress=cs->RomInfo().iDataBssLinearBase;
+		__KTRACE_OPT(KPROC,Kern::Printf("ROM process, data at %08x+%x",iDataBssRunAddress,dataBssSize));
+		}
+	return r;
+	}
+
+TInt DMemModelProcess::AddChunk(DChunk* aChunk,TBool isReadOnly)
+	{
+	return KErrNone;
+	}
+
+void DMemModelProcess::FinalRelease()
+	{
+	}
+
+void DMemModelProcess::RemoveDllData()
+//
+// Call with CodeSegLock held
+//
+	{
+	}
+
+TInt DMemModelProcess::MapCodeSeg(DCodeSeg*)
+	{
+	return KErrNone;
+	}
+
+void DMemModelProcess::UnmapCodeSeg(DCodeSeg*)
+	{
+	}
+
+TInt DMemModelProcess::NewShPool(DShPool*& /* aPool */, TShPoolCreateInfo& /* aInfo */)
+	{
+	return KErrNotSupported;
+	}
+
+TInt DThread::RawRead(const TAny* aSrc, TAny* aDest, TInt aLength, TInt aFlags, TIpcExcTrap* /*aExcTrap*/)
+//
+// Read from the thread's process.
+// aSrc is run address of memory to read
+// aDest is current address of destination
+// Enter and leave with system locked
+//
+	{
+	const TUint8* pS=(const TUint8*)aSrc;
+	TUint8* pD=(TUint8*)aDest;
+	TBool check=ETrue;
+	while (aLength)
+		{
+		if (check)
+			{
+			if (iMState==EDead)
+				return KErrDied;
+			__KTRACE_OPT(KTHREAD2,Kern::Printf("DThread::Read %08x",pS));
+			}
+		TInt l=Min(aLength,K::MaxMemCopyInOneGo);
+		memcpy(pD,pS,l);
+		pD+=l;
+		pS+=l;
+		aLength-=l;
+		if (aLength)
+			check=NKern::FlashSystem();
+		}
+	return KErrNone;
+	}
+
+TInt DThread::RawWrite(const TAny* aDest, const TAny* aSrc, TInt aLength, TInt aFlags, DThread* anOriginatingThread, TIpcExcTrap* /*aExcTrap*/)
+//
+// Write to the thread's process.
+// aDest is run address of memory to write
+// aSrc is current address of destination
+// anOriginatingThread is the thread on behalf of which this operation is performed (eg client of device driver).
+// Enter and leave with system locked
+//
+	{
+	TUint8* pD=(TUint8*)aDest;
+	const TUint8* pS=(const TUint8*)aSrc;
+	TBool check=ETrue;
+	while (aLength)
+		{
+		if (check)
+			{
+			if (iMState==EDead)
+				return KErrDied;
+			__KTRACE_OPT(KTHREAD2,Kern::Printf("DThread::Write %08x",pD));
+			}
+		TInt l=Min(aLength,K::MaxMemCopyInOneGo);
+		memcpy(pD,pS,l);
+		pD+=l;
+		pS+=l;
+		aLength-=l;
+		if (aLength)
+			check=NKern::FlashSystem();
+		}
+	return KErrNone;
+	}
+
+#ifdef __DEBUGGER_SUPPORT__
+TInt CodeModifier::SafeWriteCode(DProcess* /*aProcess*/, TLinAddr /*aAddress*/, TInt /*aSize*/, TUint /*aValue*/, void* /*aOldValue*/)
+	{
+	return KErrNotSupported;
+	}
+TInt CodeModifier::WriteCode(TLinAddr /*aAddress*/, TInt /*aSize*/, TUint /*aValue*/, void* /*aOldValue*/)
+	{
+	return KErrNotSupported;
+	}
+#endif //__DEBUGGER_SUPPORT__
+
+TInt DThread::ReadAndParseDesHeader(const TAny* aSrc, TDesHeader& aDest)
+//
+// Read and parse the header of a remote descriptor.
+// Enter and leave with system locked.
+//
+	{
+	TRawDesHeader& header = (TRawDesHeader&)aDest;
+	static const TUint8 LengthLookup[16]={4,8,12,8,12,0,0,0,0,0,0,0,0,0,0,0};
+	const TUint32* pS=(const TUint32*)aSrc;
+	if (!pS || (TInt(pS)&3)!=0)
+		return KErrBadDescriptor;
+	if (Kern::SafeRead(pS,&header,sizeof(TUint32)))
+		return KErrBadDescriptor;
+	TInt type=header[0]>>KShiftDesType8;
+	TInt l=LengthLookup[type];
+	if (l==0)
+		return KErrBadDescriptor;
+	if (l>(TInt)sizeof(TUint32) && Kern::SafeRead(pS+1,&header[1],l-sizeof(TUint32)))
+		return KErrBadDescriptor;
+	return K::ParseDesHeader(aSrc, header, aDest);
+	}
+
+DChunk* DThread::OpenSharedChunk(const TAny* aAddress, TBool /*aWrite*/, TInt& aOffset)
+	{
+	DMemModelChunk* chunk=0;
+	DObjectCon& chunks=*K::Containers[EChunk];
+	NKern::LockSystem();
+	chunks.Lock()->Wait();
+	TInt count=chunks.Count();
+	TInt i;
+	TUint offset=0;
+	for(i=0;i<count;i++)
+		{
+		DMemModelChunk* pC=(DMemModelChunk*)chunks[i];
+		offset = (TUint)aAddress-(TUint)pC->Base();
+		if(offset<TUint(pC->iMaxSize))
+			{
+			chunk = pC;
+			break;
+			}
+		}
+	chunks.Lock()->Signal();
+
+	if(!chunk)
+		return 0;
+
+	if((chunk->iChunkType!=ESharedKernelSingle && chunk->iChunkType!=ESharedKernelMultiple))
+		return 0;
+	if(chunk->Open()!=KErrNone)
+		return 0;
+	aOffset = offset;
+	return chunk;
+	}
+
+TInt DThread::PrepareMemoryForDMA(const TAny* aLinAddr, TInt aSize, TPhysAddr* aPhysicalPageList)
+	{
+	return KErrNotSupported;
+	}
+
+TInt DThread::ReleaseMemoryFromDMA(const TAny* aLinAddr, TInt aSize, TPhysAddr* aPhysicalPageList)
+	{
+	return KErrNotSupported;
+	}
+