// Copyright (c) 1999-2009 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:

// f32test\loader\exet.cpp

// 

//

#define __INCLUDE_DEPENDENCY_GRAPH

#include <e32svr.h>

#include "dllt.h"

#include "exetifc.h"

#include "dlltree.h"

#include <d_ldrtst.h>

#ifdef __VC32__

#pragma warning(disable:4706)

#endif

const TInt KMaxHandlesPerDll=4;

const TInt KMaxHandles=KMaxHandlesPerDll*KNumModules;

extern "C" TInt _E32Startup();

extern "C" IMPORT_C void RegisterConstructorCall(TInt aDllNum);

extern "C" IMPORT_C void RegisterInitCall(TInt aDllNum);

extern "C" IMPORT_C void RegisterDestructorCall(TInt aDllNum);

#define PANIC()		ExeTPanic(__LINE__)

#define EXET_ASSERT(c)	((void)((c)||(PANIC(),0)))

void ExeTPanic(TInt aLine)

	{

	User::Panic(_L("EXET"),aLine);

	}

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

 * Class Definitions

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

class CDllInfo;

class TDllList : public MDllList

	{

public:

	TDllList();

	virtual TBool IsPresent(const SDllInfo& aInfo);

	virtual TInt Add(const SDllInfo& aInfo);

	virtual void MoveToEnd(TInt aPos);

public:

	TInt iCount;

	SDllInfo iInfo[KNumModules];

	};

class CTestServer : public CServer2

	{

public:

	CTestServer();

	virtual ~CTestServer();

	virtual CSession2* NewSessionL(const TVersion& aVersion, const RMessage2& aMessage) const;

	virtual TInt RunError(TInt aError);

public:

	CDllInfo* iInfo;

	};

class CTestSession : public CSession2

	{

public:

	virtual ~CTestSession();

	virtual void CreateL();

	virtual void ServiceL(const RMessage2& aMessage);

public:

	TInt GetExeDepList(const RMessage2& aMessage);

	TInt GetCDList(const RMessage2& aMessage);

	TInt LoadDll(const RMessage2& aMessage);

	TInt CloseDll(TInt aHandle);

	TInt CallBlkI(TInt aHandle, TInt aIn);

	TInt CallRBlkI(TInt aHandle, TInt aIn);

public:

	CDllInfo* iInfo;

	};

class CDllInfo : public CBase

	{

public:

	CDllInfo();

	virtual ~CDllInfo();

	TInt Create();

	TInt StoreHandle(TInt aHandle);

	void RemoveHandle(TInt aIndex);

	void SetupCDList();

public:

	void RegisterConstructorCall(TInt aDllNum);

	void RegisterInitCall(TInt aDllNum);

	void RegisterDestructorCall(TInt aDllNum);

public:

	TInt iNextGen;

	TInt iHandleCount;

	TInt iNextHandle;

	TInt iHandles[KMaxHandles];

	TInt iModuleNum[KMaxHandles];

	TDllList iExeDepList;

	TDllList iDllConstructList;

	};

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

 * Static data

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

#ifdef __MODULE_HAS_DATA

class TExeData

	{

public:

	TExeData();

public:

	TTime iStartTime;

	TTime iInitTime;

	TInt iTest1;

	TFileName iFileName;

	};

TInt Bss[16];

TInt ExeNum=EXENUM;

TInt Generation=0;

TInt InitFlag=0;

TFullName StartThread=RThread().FullName();

TName StartProcess=RProcess().Name();

TExeData TheExeDataObject;

TExeData::TExeData()

	:	iFileName(RProcess().FileName())

	{

	TInt r;

	CHKDEPS(r);		// Check our dependencies are initialised

	if (r!=KErrNone)

		User::Panic(_L("CHKDEPS"),r);

	iStartTime.HomeTime();

	iTest1=299792458;

	RegisterConstructorCall(EXENUM);

	}

#endif

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

 * Class TDllList

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

TDllList::TDllList()

	{

	iCount=0;

	Mem::Fill(iInfo, KNumModules*sizeof(SDllInfo), 0xff);

	}

TBool TDllList::IsPresent(const SDllInfo& aInfo)

	{

	TInt i;

	for (i=0; i<iCount; ++i)

		{

		if (iInfo[i].iDllNum==aInfo.iDllNum)

			return ETrue;

		}

	return EFalse;

	}

TInt TDllList::Add(const SDllInfo& aInfo)

	{

	EXET_ASSERT(iCount<KNumModules);

	TInt pos=iCount;

	iInfo[iCount++]=aInfo;

	return pos;

	}

void TDllList::MoveToEnd(TInt aPos)

	{

	if (aPos<iCount-1)

		{

		SDllInfo x(iInfo[aPos]);

		Mem::Move(iInfo+aPos, iInfo+aPos+1, (iCount-aPos-1)*sizeof(SDllInfo));

		iInfo[iCount-1]=x;

		}

	}

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

 * Class CTestSession/CTestServer

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

void ExceptionHandler(TExcType)

	{

	User::Leave(KErrGeneral);

	}

TUint32 Read(TLinAddr a)

	{

	return *(volatile TUint32*)a;

	}

TInt CheckReadable(TLinAddr a)

	{

	User::SetExceptionHandler(ExceptionHandler,KExceptionFault);

	TRAPD(r,Read(a));

	User::SetExceptionHandler(ExceptionHandler,0);

	return r;

	}

CTestSession::~CTestSession()

	{

	}

void CTestSession::CreateL()

	{

//	CSession2::CreateL();

	}

void CTestSession::ServiceL(const RMessage2& aMessage)

	{

	TInt r=KErrNotSupported;

	TInt mid=aMessage.Function();

	switch(mid)

		{

		case RLoaderTest::EMsgGetExeDepList:

			r=GetExeDepList(aMessage);

			break;

		case RLoaderTest::EMsgLoadDll:

			r=LoadDll(aMessage);

			break;

		case RLoaderTest::EMsgCallBlkI:

			r=CallBlkI(aMessage.Int0(), aMessage.Int1());

			break;

		case RLoaderTest::EMsgCallRBlkI:

			r=CallRBlkI(aMessage.Int0(), aMessage.Int1());

			break;

		case RLoaderTest::EMsgCloseDll:

			r=CloseDll(aMessage.Int0());

			break;

		case RLoaderTest::EMsgGetCDList:

			r=GetCDList(aMessage);

			break;

		case RLoaderTest::EMsgCheckReadable:

			r=CheckReadable((TLinAddr)aMessage.Int0());

			break;

		case RLoaderTest::EMsgExit:

			r=KErrNone;

			CActiveScheduler::Stop();

			break;

		default:

			break;

		}

	aMessage.Complete(r);

	}

TInt CTestSession::GetExeDepList(const RMessage2& aMsg)

	{

	TPtrC8 dep_list_ptr((const TUint8*)&iInfo->iExeDepList.iInfo, KNumModules*sizeof(SDllInfo));

	aMsg.WriteL(0, dep_list_ptr, 0);

	return KErrNone;

	}

TInt CTestSession::GetCDList(const RMessage2& aMsg)

	{

	TPtrC8 list_ptr((const TUint8*)&iInfo->iDllConstructList.iInfo, KNumModules*sizeof(SDllInfo));

	aMsg.WriteL(0, list_ptr, 0);

	return KErrNone;

	}

TInt CTestSession::LoadDll(const RMessage2& aMsg)

	{

	TInt module=aMsg.Int0();

	TDllList dll_list;

	TPtrC8 dll_list_ptr((const TUint8*)dll_list.iInfo, KNumModules*sizeof(SDllInfo));

	TPtrC dllname=MODULE_FILENAME(module);

	iInfo->SetupCDList();

	RLibrary l;

	TInt r=l.Load(dllname, TUidType());

	if (r!=KErrNone)

		return r;

	TInitFunction f=(TInitFunction)l.Lookup(INIT_ORDINAL);

	EXET_ASSERT(f);

	r=(*f)(dll_list);

	if (r!=KErrNone)

		return r;

	TBlkIFunction bf=(TBlkIFunction)l.Lookup(BLOCK_INC_ORDINAL);

	EXET_ASSERT(bf);

	TInt result=(*bf)(531441);

	EXET_ASSERT(result==BlkIValue(module, 531441));

	TInt h=iInfo->StoreHandle(l.Handle());

	EXET_ASSERT(h>=0);

	iInfo->iModuleNum[h]=module;

	aMsg.WriteL(1, dll_list_ptr, 0);

	return h;

	}

TInt CTestSession::CallBlkI(TInt aHandle, TInt aIn)

	{

	TInt h=iInfo->iHandles[aHandle];

	EXET_ASSERT(h!=0);

	RLibrary l;

	l.SetHandle(h);

	TBlkIFunction bf=(TBlkIFunction)l.Lookup(BLOCK_INC_ORDINAL);

	EXET_ASSERT(bf);

	return (*bf)(aIn);

	}

TInt CTestSession::CallRBlkI(TInt aHandle, TInt aIn)

	{

	TInt h=iInfo->iHandles[aHandle];

	EXET_ASSERT(h!=0);

	RLibrary l;

	l.SetHandle(h);

	TRBlkIFunction rbf=(TRBlkIFunction)l.Lookup(REC_BLOCK_INC_ORDINAL);

	EXET_ASSERT(rbf);

	++iInfo->iNextGen;

	return (*rbf)(aIn,iInfo->iNextGen);

	}

TInt CTestSession::CloseDll(TInt aHandle)

	{

	TInt h=iInfo->iHandles[aHandle];

	TInt m=iInfo->iModuleNum[aHandle];

	EXET_ASSERT(h!=0);

	EXET_ASSERT(m>=0);

	iInfo->iHandles[aHandle]=0;

	iInfo->iModuleNum[aHandle]=-1;

	iInfo->SetupCDList();

	RLibrary l;

	l.SetHandle(h);

	l.Close();

	return KErrNone;

	}

CTestServer::CTestServer()

	: CServer2(0,ESharableSessions)

	{

	}

CTestServer::~CTestServer()

	{

	}

CSession2* CTestServer::NewSessionL(const TVersion& aVersion, const RMessage2&) const

	{

	(void)aVersion;

	CTestSession* s = new (ELeave) CTestSession;

	s->iInfo=iInfo;

	return s;

	}

_LIT(KExetErr,"EXETERR");

TInt CTestServer::RunError(TInt aError)

	{

	User::Panic(KExetErr,aError);

	return 0;

	}

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

 * Class CDllInfo

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

TInt ChkC()

	{

#ifdef __MODULE_HAS_DATA

	TInt init_mark=~((EXENUM+DLLNUMOFFSET)*(EXENUM+DLLNUMOFFSET));

	if (InitFlag==init_mark)

		return KErrNone;

	if (InitFlag!=0)

		return 0x494e4946;

	TInt i;

	TInt x=0;

	for (i=0; i<16; ++i) x|=Bss[i];

	if (x)

		return 0x425353;

	if (ExeNum!=EXENUM)

		return 0x44415441;

	if (Generation!=0)

		return 0x47454e;

	if (StartProcess!=RProcess().Name())

		return 0x535450;

	if (TheExeDataObject.iTest1!=299792458)

		return 0x54455354;

	if (TheExeDataObject.iFileName != RProcess().FileName())

		return 0x464e414d;

	InitFlag=init_mark;

	RDebug::Print(_L("ChkC %S OK"),&TheExeDataObject.iFileName);

#endif

	return KErrNone;

	}

TInt Init(MDllList& aList)

	{

	TInt r=KErrNone;

	SDllInfo info;

	info.iDllNum=DLLNUM;

	info.iEntryPointAddress=((TInt)&_E32Startup);

	RLdrTest ldd;

	ldd.Open();

	info.iModuleHandle=ldd.ModuleHandleFromAddr((TInt)&_E32Startup);

	ldd.Close();

	if (!aList.IsPresent(info))

		{

		TInt pos=aList.Add(info);

		INITDEPS(r,aList);		// Call Init on our dependencies

		aList.MoveToEnd(pos);

#ifdef __MODULE_HAS_DATA

		if (r==KErrNone)

			r=ChkC();		// Check initial values for .data/.bss and check constructors have been called

#endif

		RegisterInitCall(DLLNUM);

		}

	return r;

	}

CDllInfo::CDllInfo()

	{

	Mem::Fill(iModuleNum, sizeof(iModuleNum), 0xff);

	}

CDllInfo::~CDllInfo()

	{

	}

TInt CDllInfo::Create()

	{

	TInt r;

	r=UserSvr::DllSetTls(0, this);

	if (r==KErrNone)

		r=UserSvr::DllSetTls(TLS_INDEX, NULL);

	if (r==KErrNone)

		{

		r=Init(iExeDepList);

		}

	return r;

	}

void CDllInfo::RegisterConstructorCall(TInt aDllNum)

	{

	(void)aDllNum;

	}

void CDllInfo::RegisterInitCall(TInt aDllNum)

	{

	(void)aDllNum;

	}

void CDllInfo::RegisterDestructorCall(TInt aDllNum)

	{

	(void)aDllNum;

	}

TInt CDllInfo::StoreHandle(TInt aHandle)

	{

	if (iHandleCount==KMaxHandles)

		return KErrOverflow;

	TInt i=iNextHandle;

	for (; i<KMaxHandles && iHandles[i]!=0; ++i) {}

	if (i==KMaxHandles)

		{

		for (i=0; i<iNextHandle && iHandles[i]!=0; ++i) {}

		EXET_ASSERT(i!=iNextHandle);

		}

	iNextHandle=i;

	iHandles[i]=aHandle;

	++iHandleCount;

	return i;

	}

void CDllInfo::RemoveHandle(TInt aIndex)

	{

	iHandles[aIndex]=0;

	--iHandleCount;

	}

void CDllInfo::SetupCDList()

	{

	new (&iDllConstructList) TDllList;

	EXET_ASSERT(UserSvr::DllSetTls(TLS_INDEX, &iDllConstructList)==KErrNone);

	}

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

 * Exports

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

extern "C" __MODULE_EXPORT void RegisterConstructorCall(TInt aDllNum)

	{

	CDllInfo* p=(CDllInfo*)UserSvr::DllTls(0);

	if (p)

		p->RegisterConstructorCall(aDllNum);

	}

extern "C" __MODULE_EXPORT void RegisterInitCall(TInt aDllNum)

	{

	CDllInfo* p=(CDllInfo*)UserSvr::DllTls(0);

	if (p)

		p->RegisterInitCall(aDllNum);

	}

extern "C" __MODULE_EXPORT void RegisterDestructorCall(TInt aDllNum)

	{

	CDllInfo* p=(CDllInfo*)UserSvr::DllTls(0);

	if (p)

		p->RegisterDestructorCall(aDllNum);

	}

GLDEF_C TInt E32Main()

	{

	CTrapCleanup* cleanup=CTrapCleanup::New();

	EXET_ASSERT(cleanup);

	CActiveScheduler* sched=new CActiveScheduler;

	EXET_ASSERT(sched);

	CActiveScheduler::Install(sched);

	CTestServer* svr=new CTestServer;

	EXET_ASSERT(svr);

	TBuf<16> suffix;

	User::CommandLine(suffix);

	TName svr_name=KServerName();

	if (suffix.Length())

		{

		svr_name.Append('.');

		svr_name+=suffix;

		}

	EXET_ASSERT(svr->Start(svr_name)==KErrNone);

	CDllInfo* dllinfo=new CDllInfo;

	EXET_ASSERT(dllinfo);

	EXET_ASSERT(dllinfo->Create()==KErrNone);

	svr->iInfo=dllinfo;

	CActiveScheduler::Start();

	UserSvr::DllFreeTls(0);

	UserSvr::DllFreeTls(TLS_INDEX);

	delete dllinfo;

	delete svr;

	delete sched;

	delete cleanup;

	return 0;

	}