/*
* Copyright (c) 2006-2009 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: 
* e32test\dll\t_oeexport_wins.cpp*
*/


/**

Overview:

	Emulator version that tests it is possible to retrieve the 0th 

	ordinal from exes and dlls that are marked as having named 

	symbol export data.



API Information:

	RProcess, RLibrary



Details:

	- 	Test reading 0th ordinal from a dll which has a E32EmulExpSymInfoHdr 

		struct at the 0th ordinal and verify the contents of the header

	-	Test NULL is returned on attempts to get the 0th ordinal from a 

		dll without the named symbol data

	-	Test reading the named symbol data from an exe that contains a

		E32EmulExpSymInfoHdr struct at the 0th ordinal and verify the contents

	-	Test NULL is returned when attempting to read the 0th ordinal of

		an exe that doesn't contain a E32EmulExpSymInfoHdr



Platforms/Drives/Compatibility:

	All



Assumptions/Requirement/Pre-requisites:



	

Failures and causes:

	

	

Base Port information:



*/

#include <t_oedll.h>

#include <e32test.h>

#include <e32panic.h>

#include <f32image.h>



RTest test(_L("T_OEEXPORT"));



LOCAL_D void VerifyHdr(E32EmulExpSymInfoHdr& aExpectedHdr, E32EmulExpSymInfoHdr &aReadHdr)

	{

	test(aExpectedHdr.iSymCount == aReadHdr.iSymCount);

	test(aExpectedHdr.iDllCount == aReadHdr.iDllCount);

	}



TInt E32Main()

	{

	test.Title();



	test.Start(_L("Test retrieving 0th ordinal and therefore named symbol export data"));

	

	E32EmulExpSymInfoHdr tmpHdr;

	E32EmulExpSymInfoHdr *readHdr;

	RLibrary library;



	// The values for the header of the dll with a 0th ordinal

	tmpHdr.iSymCount = 0x0;

	tmpHdr.iDllCount = 0x3;

	test(library.Load(_L("t_oedll.dll")) == KErrNone);

	test.Next(_L("Attempt to retrieve named symbol data from t_oedll.dll"));

	readHdr = (E32EmulExpSymInfoHdr*)library.Lookup(0);

	test(readHdr!=NULL);

//#define PRINT_ZEROTH

#ifdef PRINT_ZEROTH

	test.Printf(_L("iSymCount=%08x;iDllCounts=%08x\n"),readHdr->iSymCount,readHdr->iDllCount);

#endif

	test.Next(_L("Verify export data of t_oedll.dll is that expected"));

	VerifyHdr(tmpHdr, *readHdr);

	library.Close();



	test.Next(_L("Verify lookup on dll without oe export data returns NULL"));

	test(library.Load(_L("t_dll1.dll")) == KErrNone);

	readHdr = (E32EmulExpSymInfoHdr*)library.Lookup(0);

	test(readHdr == NULL);

	library.Close();



	// The values for the header of the exe of the current process with a 0th ordinal

	tmpHdr.iSymCount = 0x3;

	tmpHdr.iDllCount = 0x5;

	test.Next(_L("Attempt to retrieve named symbol data from current process"));

	readHdr = (E32EmulExpSymInfoHdr*)(RProcess::ExeExportData());

	test(readHdr!=NULL);

	test.Next(_L("Verify export data 0th ordinal data of this exe is that expected"));

#ifdef PRINT_ZEROTH

	test.Printf(_L("iSymCount=%08x;iDllCounts=%08x;\n"),readHdr->iSymCount,readHdr->iDllCount);

#endif

	VerifyHdr(tmpHdr, *readHdr);



/*

On Emulator can't examine fixups & depdencies via export data as data not included

in E32EmulExpSymInfoHdr.  This is all handled by the MS loader.



*/

	test.End();

	return KErrNone;

	}