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/*******************************************************************************
* Copyright (c) 2000, 2015 QNX Software Systems and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* QNX Software Systems - Initial API and implementation
*******************************************************************************/
package org.eclipse.cdt.utils.coff.parser;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import org.eclipse.cdt.core.IAddressFactory;
import org.eclipse.cdt.core.IBinaryParser;
import org.eclipse.cdt.core.IBinaryParser.IBinaryFile;
import org.eclipse.cdt.core.IBinaryParser.ISymbol;
import org.eclipse.cdt.core.ISymbolReader;
import org.eclipse.cdt.utils.AR;
import org.eclipse.cdt.utils.Addr32;
import org.eclipse.cdt.utils.Addr32Factory;
import org.eclipse.cdt.utils.BinaryObjectAdapter;
import org.eclipse.cdt.utils.Symbol;
import org.eclipse.cdt.utils.coff.Coff;
import org.eclipse.cdt.utils.coff.PE;
import org.eclipse.core.runtime.IPath;
/**
*/
public class PEBinaryObject extends BinaryObjectAdapter {
BinaryObjectInfo info;
IAddressFactory addressFactory;
ISymbol[] symbols;
AR.ARHeader header;
public PEBinaryObject(IBinaryParser parser, IPath path, AR.ARHeader header) {
super(parser, path, IBinaryFile.OBJECT);
}
public PEBinaryObject(IBinaryParser parser, IPath p, int type) {
super(parser, p, type);
}
/* (non-Javadoc)
* @see org.eclipse.cdt.utils.BinaryObjectAdapter#getName()
*/
@Override
public String getName() {
if (header != null) {
return header.getObjectName();
}
return super.getName();
}
/* (non-Javadoc)
* @see org.eclipse.cdt.core.IBinaryParser.IBinaryFile#getContents()
*/
@Override
public InputStream getContents() throws IOException {
if (getPath() != null && header != null) {
return new ByteArrayInputStream(header.getObjectData());
}
return super.getContents();
}
/**
* @see org.eclipse.cdt.core.IBinaryParser.IBinaryObject#getSymbols()
*/
@Override
public ISymbol[] getSymbols() {
if (hasChanged() || symbols == null) {
try {
loadAll();
} catch (IOException e) {
symbols = NO_SYMBOLS;
}
}
return symbols;
}
@Override
protected BinaryObjectInfo getBinaryObjectInfo() {
if (hasChanged() || info == null) {
try {
loadInfo();
} catch (IOException e) {
info = new BinaryObjectInfo();
}
}
return info;
}
@Override
@SuppressWarnings("unchecked")
public <T> T getAdapter(Class<T> adapter) {
if (adapter.equals(PE.class)) {
try {
if (header != null) {
return (T) new PE(getPath().toOSString(), header.getObjectDataOffset());
}
return (T) new PE(getPath().toOSString());
} catch (IOException e) {
}
}
if (adapter.equals(ISymbolReader.class)) {
PE pe = getAdapter(PE.class);
if (pe != null) {
return (T) pe.getSymbolReader();
}
}
return super.getAdapter(adapter);
}
protected PE getPE() throws IOException {
if (header != null) {
return new PE(getPath().toOSString(), header.getObjectDataOffset());
}
return new PE(getPath().toOSString());
}
protected void loadAll() throws IOException {
PE pe = null;
try {
pe = getPE();
loadInfo(pe);
loadSymbols(pe);
} finally {
if (pe != null) {
pe.dispose();
}
}
}
protected void loadInfo() throws IOException {
PE pe = null;
try {
pe = getPE();
loadInfo(pe);
} finally {
if (pe != null) {
pe.dispose();
}
}
}
protected void loadInfo(PE pe) throws IOException {
info = new BinaryObjectInfo();
PE.Attribute attribute = getPE().getAttribute();
info.isLittleEndian = attribute.isLittleEndian();
info.hasDebug = attribute.hasDebug();
info.cpu = attribute.getCPU();
}
protected void loadSymbols(PE pe) throws IOException {
ArrayList<Symbol> list = new ArrayList<>();
loadSymbols(pe, list);
symbols = list.toArray(NO_SYMBOLS);
Arrays.sort(symbols);
list.clear();
}
protected void loadSymbols(PE pe, List<Symbol> list) throws IOException {
Coff.Symbol[] peSyms = pe.getSymbols();
byte[] table = pe.getStringTable();
addSymbols(peSyms, table, list);
}
protected void addSymbols(Coff.Symbol[] peSyms, byte[] table, List<Symbol> list) {
for (org.eclipse.cdt.utils.coff.Coff.Symbol peSym : peSyms) {
if (peSym.isFunction() || peSym.isPointer() || peSym.isArray()) {
String name = peSym.getName(table);
if (name == null || name.trim().length() == 0 || !Character.isJavaIdentifierStart(name.charAt(0))) {
continue;
}
int type = peSym.isFunction() ? ISymbol.FUNCTION : ISymbol.VARIABLE;
list.add(new Symbol(this, name, type, new Addr32(peSym.n_value), peSym.getSize()));
}
}
}
/* (non-Javadoc)
* @see org.eclipse.cdt.utils.BinaryObjectAdapter#getAddressFactory()
*/
@Override
public IAddressFactory getAddressFactory() {
if (addressFactory == null) {
addressFactory = new Addr32Factory();
}
return addressFactory;
}
}
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