e32tools/elf2e32/source/e32exporttable.cpp
changeset 0 044383f39525
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/e32tools/elf2e32/source/e32exporttable.cpp	Tue Oct 27 16:36:35 2009 +0000
@@ -0,0 +1,125 @@
+// Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies).
+// All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of "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:
+//
+
+#include "e32exporttable.h"
+#include "pl_elfexecutable.h"
+#include "pl_elfexports.h"
+#include "pl_dllsymbol.h"
+#include "pl_elflocalrelocation.h"
+
+/**
+Destructor for E32ExportTable class.
+@internalComponent
+@released
+*/
+E32ExportTable::~E32ExportTable()
+{
+	delete [] iTable;
+}
+
+/**
+This function updates the e32 export table.
+@param aElfExecutable - Elf executable
+@param aExportList - export symbol list
+@internalComponent
+@released
+*/
+void E32ExportTable::CreateExportTable(ElfExecutable * aElfExecutable, ElfExports::ExportList & aExportList)
+{
+	iElfExecutable = aElfExecutable;
+	// ELFExports::ExportList aExportList = aElfExecutable->GetExportsInOrdinalOrder();
+	// The export table has a header containing the number of entries
+	// before the entries themselves. So add 1 to number of exports
+	iNumExports = aExportList.size();
+	size_t aSize = iNumExports + 1;
+	iSize = aSize * sizeof(MemAddr);
+	iTable = new unsigned int[aSize];
+	// Set up header
+	iTable[0] = aExportList.size();
+	Elf32_Phdr * aROHdr = aElfExecutable->iCodeSegmentHdr;
+	// The export table starts after the header. NB this is a virtual address in the RO
+	// segment of the E32Image. It is outside the ELF RO segment.
+	Elf32_Addr * aPlace =  ELF_ENTRY_PTR(Elf32_Addr, aROHdr->p_vaddr, aROHdr->p_filesz) + 1;
+	iExportTableAddress = (Elf32_Addr)aPlace;
+	// Tell the E32Image constructor that it must allocate the export table
+	// i.e. copy it from iTable.
+	iAllocateP = true;
+	bool aDelSym;
+	ElfExports::ExportList::iterator first = aExportList.begin();
+	for (PLUINT32 i = 1; i < aSize; i++, first++) 
+	{
+		Elf32_Sym * sym;
+
+		unsigned int ptr;
+		if ((*first)->Absent())
+		{
+			ptr = aElfExecutable->iEntryPoint;
+			sym = new Elf32_Sym;
+			memset(sym, 0, sizeof(Elf32_Sym));
+			sym->st_value = ptr;
+			aDelSym = true;
+		}
+		else
+		{
+			ptr = (*first)->iElfSym->st_value;
+			sym = (*first)->iElfSym;
+			aDelSym = false;
+		}
+		// set up the pointer
+		iTable[i] = ptr;
+		ElfLocalRelocation * aRel = new ElfLocalRelocation(iElfExecutable, (Elf32_Addr)aPlace++, 0, i, R_ARM_ABS32, NULL, ESegmentRO, sym, aDelSym);														   
+		aRel->Add();
+
+	}
+}
+
+/**
+This function returns the number of exports.
+@internalComponent
+@released
+*/
+size_t E32ExportTable::GetNumExports()
+{
+	return iNumExports;
+}
+
+/**
+This function tells the e32 image allocator if space is required to 
+be allocated for export table.
+@internalComponent
+@released
+*/
+bool E32ExportTable::AllocateP(){ 
+	return iAllocateP;
+}
+
+/**
+This function returns the e32 export table size.
+@internalComponent
+@released
+*/
+size_t E32ExportTable::GetExportTableSize(){ 
+	return iSize;
+}
+
+/**
+This function returns e32 export table.
+@internalComponent
+@released
+*/
+unsigned int * E32ExportTable::GetExportTable() {
+	 return iTable; 
+}
+