/*

* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

*

* This program is free software: you can redistribute it and/or modify

* it under the terms of the GNU Lesser General Public License as published by

* the Free Software Foundation, either version 3 of the License, or

* (at your option) any later version.

*

* This program is distributed in the hope that it will be useful,

* but WITHOUT ANY WARRANTY; without even the implied warranty of

* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

* GNU Lesser General Public License for more details.

* 

* You should have received a copy of the GNU Lesser General Public License

* along with this program.  If not, see <http://www.gnu.org/licenses/>.

*/

#include <fcntl.h>

#include <sys/types.h>

#include <unistd.h>

#include <cstring>

#include "elfromerror.h"

#include "e32romimage.h"

void E32RomImage::SetupRomData(){

	// see if there's a header on the image.

	iRomFile.GetData(&iE32RomHeader, sizeof(iE32RomHeader));

	// In general the 'name' is of the form EPOC*ROM.

	// We are looking for ARM roms for the moment so check for EPOCARM and error on anything

	// else which matches EPOC*ROM

    bool isEPOCHeader = !strncmp((const char *)&iE32RomHeader.name[0], "EPOC", 4) && 

    				(strstr((const char *)&iE32RomHeader.name[0], "ROM") != NULL);

    bool isARMHeader = !strncmp((const char *)&iE32RomHeader.name[0], "EPOCARM", 7);

    if(isARMHeader)

    	iRomFile.SetOffset(sizeof(iE32RomHeader));

    else if (isEPOCHeader) 

    	errx(EX_NOINPUT, "unsupported rom type: %s\n", (const char *)&iE32RomHeader.name[0]);

}

void E32RomImage::GetFileFragmentData(FileFragmentData & aFileFragmentData ){

	assert(iRomFile.Size() > 0);

	if (!iData)

		iData = iRomFile.GetData();

	SetFileFragmentData(aFileFragmentData, Size(), reinterpret_cast<char *>(iData));

}

void E32RomImage::DeleteFileFragmentData(){ 

	if (iData) {

		char * d = iData;

		iData = NULL;

		delete [] d; 

	}

}