e32tools/elf2e32/source/filedump.cpp
author Mike Kinghan <mikek@symbian.org>
Mon, 21 Jun 2010 17:57:23 +0100
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Add --asm option to elf2e32, so that GCCE builds can use --asm=gas with --dump=a and get a usable .s file (Bug 1405)
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// Copyright (c) 2007-2009 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 "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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// Mike Kinghan, mikek@symbian.org, for Symbian Foundation, 2010 
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//
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// Description:
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// FileDump Operations of elf2e32 tool to dump E32Image and generate ASM File.
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// @internalComponent
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// @released
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// 
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//
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#include "pl_common.h"
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#include "filedump.h"
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#include "e32imagefile.h"
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#include "h_utl.h"
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#include "deffile.h"
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#include "errorhandler.h"
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#include <cstdio>
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#include <cassert>
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/**
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Constructor for class FileDump
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@param aParameterListInterface - Instance of class ParameterListInterface
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@internalComponent
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@released
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*/
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FileDump::FileDump(ParameterListInterface* aParameterListInterface) : UseCaseBase(aParameterListInterface)
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{
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}
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/**
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Destructor for class FileDump
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@internalComponent
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@released
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*/
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FileDump::~FileDump()
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{
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}
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/**
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Execute Function for the File Dump. It dumps E32 image or generate ASM file based on the
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file dump options
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@return 0 on success, otherwise throw error 
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@internalComponent
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@released
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*/
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int FileDump::Execute()
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{
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	if(iParameterListInterface->FileDumpOption() && iParameterListInterface->E32OutOption() && iParameterListInterface->DefFileInOption()) //DumpAsm
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	{
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		if(!(iParameterListInterface->DumpOptions() & EDumpAsm))
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			throw InvalidArgumentError(INVALIDARGUMENTERROR,(!iParameterListInterface->FileDumpSubOptions()?"":iParameterListInterface->FileDumpSubOptions()) ,"--dump");
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		if(iParameterListInterface->DumpOptions() & 31)
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			throw InvalidArgumentError(INVALIDARGUMENTERROR,(!iParameterListInterface->FileDumpSubOptions()?"":iParameterListInterface->FileDumpSubOptions()),"--dump");
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		if(!iParameterListInterface->E32ImageOutput())
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			throw ParameterParserError(NOREQUIREDOPTIONERROR,"--output");
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		if(!iParameterListInterface->DefInput())
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			throw ParameterParserError(NOREQUIREDOPTIONERROR,"--definput");
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		GenerateAsmFile();
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	}
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	else
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	{
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		if(!iParameterListInterface->E32Input())
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			throw ParameterParserError(NOREQUIREDOPTIONERROR,"--e32input");
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		if(iParameterListInterface->DumpOptions() & EDumpAsm )
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			throw InvalidArgumentError(INVALIDARGUMENTERROR,iParameterListInterface->FileDumpSubOptions() ,"--dump");
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		DumpE32Image();
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	}
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	return 0;
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}
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/**
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Function to generate ASM File.
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@param afileName - ASM File name
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@return 0 on success, otherwise throw error 
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@internalComponent
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@released
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*/
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int FileDump::GenerateAsmFile() //DumpAsm
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{
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	EAsmDialect asmDialect = iParameterListInterface->AsmDialect();
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	switch(asmDialect)
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	{
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	case EGas:
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		return GenerateGasAsmFile();
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	case EArmas:
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		return GenerateArmasAsmFile();
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	default:
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		assert(false);
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	}
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	return 0;
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}
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/**
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Function to generate an RVCT armas ASM File.
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@param afileName - ASM File name
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@return 0 on success, otherwise throw error 
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@internalComponent
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@released
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*/
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int FileDump::GenerateArmasAsmFile()
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{
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	DefFile *iDefFile = new DefFile();
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	SymbolList *aSymList;
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	aSymList = iDefFile->ReadDefFile(iParameterListInterface->DefInput());
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	char const *afileName = iParameterListInterface->E32ImageOutput(); 
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	FILE *fptr;
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	if((fptr=fopen(afileName,"w"))==NULL)
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	{
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		throw FileError(FILEOPENERROR,(char*)afileName);
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	}
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	else
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	{
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		SymbolList::iterator aItr = aSymList->begin();
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		SymbolList::iterator last = aSymList->end();
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		Symbol *aSym;
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		while( aItr != last)
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		{
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			aSym = *aItr;
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			if(aSym->Absent())
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			{
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				aItr++;
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				continue;
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			}
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			fputs("\tIMPORT ",fptr);
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			fputs(aSym->SymbolName(),fptr);
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			//Set the visibility of the symbols as default."DYNAMIC" option is
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			//added to remove STV_HIDDEN visibility warnings generated by every 
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			//export during kernel build 
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			fputs(" [DYNAMIC]", fptr);
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			fputs("\n",fptr);
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			aItr++;
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		}
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        // Create a directive section that instructs the linker to make all listed
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        // symbols visible.
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        fputs("\n AREA |.directive|, READONLY, NOALLOC\n\n",fptr);
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        fputs("\tDCB \"#<SYMEDIT>#\\n\"\n", fptr);
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		aItr = aSymList->begin();
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		while (aItr != last)
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		{
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			aSym = *aItr;
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			if ( aSym->Absent() )
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			{
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				aItr++;
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				continue;
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			}
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            // Example:
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            //  DCB "EXPORT __ARM_ll_mlass\n"
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			fputs("\tDCB \"EXPORT ",fptr);
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			fputs(aSym->SymbolName(),fptr);
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			fputs("\\n\"\n", fptr);
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			aItr++;
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		}
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		fputs("\n END\n",fptr);
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		fclose(fptr);
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	}
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	return 0;
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}
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/**
589
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Function to generate a GNU as ASM File.
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@param afileName - ASM File name
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@return 0 on success, otherwise throw error 
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@internalComponent
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@released
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   189
*/
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int FileDump::GenerateGasAsmFile()
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{
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	DefFile *iDefFile = new DefFile();
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	SymbolList *aSymList;
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	aSymList = iDefFile->ReadDefFile(iParameterListInterface->DefInput());
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   195
	char const *afileName = iParameterListInterface->E32ImageOutput(); 
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   196
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   197
	FILE *fptr;
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   198
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   199
	if((fptr=fopen(afileName,"w"))==NULL)
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	{
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		throw FileError(FILEOPENERROR,(char*)afileName);
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   202
	}
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   203
	else
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	{
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		SymbolList::iterator aItr = aSymList->begin();
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   206
		SymbolList::iterator last = aSymList->end();
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   207
		Symbol *aSym;
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   208
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   209
		while( aItr != last)
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		{
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   211
			aSym = *aItr;
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   212
851206cea67b Add --asm option to elf2e32, so that GCCE builds can use --asm=gas with --dump=a and get a usable .s file (Bug 1405)
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   213
			if(aSym->Absent())
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   214
			{
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   215
				aItr++;
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   216
				continue;
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   217
			}
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   218
851206cea67b Add --asm option to elf2e32, so that GCCE builds can use --asm=gas with --dump=a and get a usable .s file (Bug 1405)
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   219
			fputs("\t.extern ",fptr);
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   220
			fputs(aSym->SymbolName(),fptr);
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   221
			fputs("\n",fptr);
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   222
			aItr++;
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   223
		}
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   224
851206cea67b Add --asm option to elf2e32, so that GCCE builds can use --asm=gas with --dump=a and get a usable .s file (Bug 1405)
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   225
        // Create a directive section that instructs the linker to make all listed
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   226
        // symbols visible.
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   227
851206cea67b Add --asm option to elf2e32, so that GCCE builds can use --asm=gas with --dump=a and get a usable .s file (Bug 1405)
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   228
        fputs("\t.text\n\n",fptr);
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   229
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   230
        fputs("\t.ascii \"#<SYMEDIT>#\\n\"\n", fptr);
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   231
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   232
		aItr = aSymList->begin();
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   233
		while (aItr != last)
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   234
		{
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   235
			aSym = *aItr;
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   236
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   237
			if ( aSym->Absent() )
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   238
			{
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   239
				aItr++;
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   240
				continue;
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   241
			}
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   242
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   243
            // Example:
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            //  DCB "EXPORT __ARM_ll_mlass\n"
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			fputs("\t.ascii \"EXPORT ",fptr);
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			fputs(aSym->SymbolName(),fptr);
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			fputs("\\n\"\n", fptr);
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			aItr++;
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		}
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		fclose(fptr);
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	}
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	return 0;
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}
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/**
0
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Function to Dump E32 Image.
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@param afileName - E32 Image File name
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@return 1 on success, otherwise throw error 
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@internalComponent
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@released
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*/
589
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int FileDump::DumpE32Image()
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{
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	char const *afileName = iParameterListInterface->E32Input(); 
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	E32ImageFile *aE32Imagefile=new E32ImageFile();
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	TInt result = aE32Imagefile->Open(afileName);
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	if (result > 0)
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		return 1;
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	else if (result == KErrCorrupt || result == KErrNotSupported)
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	{
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		throw InvalidE32ImageError(INVALIDE32IMAGEERROR, (char *)afileName);
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	}
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	else if (result != 0)
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	{
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		throw FileError(FILEREADERROR, (char *)afileName);
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	}
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	int dumpOptions=iParameterListInterface->DumpOptions();
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	aE32Imagefile->Dump((TText*)afileName, dumpOptions);
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	delete aE32Imagefile;
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	return KErrNone;
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}
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