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/*******************************************************************************
* Copyright (c) 2004, 2005 QNX Software Systems and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* QNX Software Systems - Initial API and implementation
*******************************************************************************/
package org.eclipse.cdt.debug.internal.core;
import java.math.BigInteger;
import java.text.MessageFormat;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.cdt.core.IAddress;
import org.eclipse.cdt.debug.core.CDebugCorePlugin;
import org.eclipse.cdt.debug.core.ICDTLaunchConfigurationConstants;
import org.eclipse.cdt.debug.core.cdi.CDIException;
import org.eclipse.cdt.debug.core.cdi.model.ICDIExpression;
import org.eclipse.cdt.debug.core.model.ICType;
import org.eclipse.cdt.debug.core.model.ICValue;
import org.eclipse.cdt.debug.internal.core.model.CDebugTarget;
import org.eclipse.cdt.debug.internal.core.model.CExpression;
import org.eclipse.cdt.debug.internal.core.model.CMemoryBlockExtension;
import org.eclipse.cdt.debug.internal.core.model.CStackFrame;
import org.eclipse.cdt.debug.internal.core.model.CThread;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.debug.core.DebugException;
import org.eclipse.debug.core.DebugPlugin;
import org.eclipse.debug.core.ILaunchConfiguration;
import org.eclipse.debug.core.ILaunchConfigurationWorkingCopy;
import org.eclipse.debug.core.model.IDebugElement;
import org.eclipse.debug.core.model.IDebugTarget;
import org.eclipse.debug.core.model.IMemoryBlock;
import org.eclipse.debug.core.model.IMemoryBlockExtension;
import org.eclipse.debug.core.model.IMemoryBlockRetrievalExtension;
import org.eclipse.debug.core.model.IStackFrame;
import org.eclipse.debug.core.model.IValue;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
/**
* Implements the memory retrieval features based on the CDI model.
*/
public class CMemoryBlockRetrievalExtension implements IMemoryBlockRetrievalExtension {
private static final String MEMORY_BLOCK_EXPRESSION_LIST = "memoryBlockExpressionList"; //$NON-NLS-1$
private static final String MEMORY_BLOCK_EXPRESSION = "expression"; //$NON-NLS-1$
private static final String ATTR_MEMORY_BLOCK_EXPRESSION_TEXT = "text"; //$NON-NLS-1$
CDebugTarget fDebugTarget;
/**
* Constructor for CMemoryBlockRetrievalExtension.
*/
public CMemoryBlockRetrievalExtension( CDebugTarget debugTarget ) {
fDebugTarget = debugTarget;
}
protected CDebugTarget getDebugTarget() {
return fDebugTarget;
}
public void initialize() {
ILaunchConfiguration config = getDebugTarget().getLaunch().getLaunchConfiguration();
try {
String memento = config.getAttribute( ICDTLaunchConfigurationConstants.ATTR_DEBUGGER_MEMORY_BLOCKS, "" ); //$NON-NLS-1$
if ( memento != null && memento.trim().length() != 0 )
initializeFromMemento( memento );
}
catch( CoreException e ) {
CDebugCorePlugin.log( e );
}
}
private void initializeFromMemento( String memento ) throws CoreException {
Element root = DebugPlugin.parseDocument( memento );
if ( root.getNodeName().equalsIgnoreCase( MEMORY_BLOCK_EXPRESSION_LIST ) ) {
List expressions = new ArrayList();
NodeList list = root.getChildNodes();
int length = list.getLength();
for( int i = 0; i < length; ++i ) {
Node node = list.item( i );
short type = node.getNodeType();
if ( type == Node.ELEMENT_NODE ) {
Element entry = (Element)node;
if ( entry.getNodeName().equalsIgnoreCase( MEMORY_BLOCK_EXPRESSION ) ) {
String exp = entry.getAttribute( ATTR_MEMORY_BLOCK_EXPRESSION_TEXT );
expressions.add( exp );
}
}
}
createMemoryBlocks( (String[])expressions.toArray( new String[expressions.size()] ) );
return;
}
abort( InternalDebugCoreMessages.getString( "CMemoryBlockRetrievalExtension.3" ), null ); //$NON-NLS-1$
}
private void createMemoryBlocks( String[] expressions ) {
ArrayList list = new ArrayList( expressions.length );
for ( int i = 0; i < expressions.length; ++i ) {
IAddress address = getDebugTarget().getAddressFactory().createAddress( expressions[i] );
if ( address != null ) {
list.add( new CMemoryBlockExtension( getDebugTarget(), address.toHexAddressString(), address.getValue() ) );
}
}
DebugPlugin.getDefault().getMemoryBlockManager().addMemoryBlocks( (IMemoryBlock[])list.toArray( new IMemoryBlock[list.size()] ) );
}
public String getMemento() throws CoreException {
IMemoryBlock[] blocks = DebugPlugin.getDefault().getMemoryBlockManager().getMemoryBlocks( getDebugTarget() );
Document document = DebugPlugin.newDocument();
Element element = document.createElement( MEMORY_BLOCK_EXPRESSION_LIST );
for ( int i = 0; i < blocks.length; ++i ) {
if ( blocks[i] instanceof IMemoryBlockExtension ) {
Element child = document.createElement( MEMORY_BLOCK_EXPRESSION );
try {
child.setAttribute( ATTR_MEMORY_BLOCK_EXPRESSION_TEXT, ((IMemoryBlockExtension)blocks[i]).getBigBaseAddress().toString() );
element.appendChild( child );
}
catch( DebugException e ) {
CDebugCorePlugin.log( e.getStatus() );
}
}
}
document.appendChild( element );
return DebugPlugin.serializeDocument( document );
}
/* (non-Javadoc)
* @see org.eclipse.debug.core.model.IMemoryBlockExtensionRetrieval#getExtendedMemoryBlock(java.lang.String, org.eclipse.debug.core.model.IDebugElement)
*/
public IMemoryBlockExtension getExtendedMemoryBlock( String expression, Object selected ) throws DebugException {
String address = null;
CExpression exp = null;
String msg = null;
try {
if (selected instanceof IDebugElement) {
IDebugElement debugElement = (IDebugElement)selected;
CStackFrame frame = getStackFrame( debugElement );
if ( frame != null ) {
// We need to provide a better way for retrieving the address of expression
ICDIExpression cdiExpression = frame.getCDITarget().createExpression( expression );
exp = new CExpression( frame, cdiExpression, null );
IValue value = exp.getValue();
if ( value instanceof ICValue ) {
ICType type = ((ICValue)value).getType();
if ( type != null && (type.isPointer() || type.isIntegralType()) ) {
address = value.getValueString();
exp.dispose();
IDebugTarget target = debugElement.getDebugTarget();
if ( target instanceof CDebugTarget ) {
if ( address != null ) {
// ???
BigInteger a = ( address.startsWith( "0x" ) ) ? new BigInteger( address.substring( 2 ), 16 ) : new BigInteger( address ); //$NON-NLS-1$
return new CMemoryBlockExtension( (CDebugTarget)target, expression, a );
}
}
}
else {
msg = MessageFormat.format( InternalDebugCoreMessages.getString( "CMemoryBlockRetrievalExtension.1" ), new String[] { expression } ); //$NON-NLS-1$
}
}
else {
msg = MessageFormat.format( InternalDebugCoreMessages.getString( "CMemoryBlockRetrievalExtension.2" ), new String[] { expression } ); //$NON-NLS-1$
}
}
}
}
catch( CDIException e ) {
msg = e.getMessage();
}
catch( NumberFormatException e ) {
msg = MessageFormat.format( InternalDebugCoreMessages.getString( "CMemoryBlockRetrievalExtension.0" ), new String[] { expression, address } ); //$NON-NLS-1$
}
throw new DebugException( new Status( IStatus.ERROR, CDebugCorePlugin.getUniqueIdentifier(), DebugException.REQUEST_FAILED, msg, null ) );
}
/* (non-Javadoc)
* @see org.eclipse.debug.core.model.IMemoryBlockRetrieval#supportsStorageRetrieval()
*/
public boolean supportsStorageRetrieval() {
return true;
}
/* (non-Javadoc)
* @see org.eclipse.debug.core.model.IMemoryBlockRetrieval#getMemoryBlock(long, long)
*/
public IMemoryBlock getMemoryBlock( long startAddress, long length ) throws DebugException {
String expression = Long.toHexString(startAddress);
BigInteger address = new BigInteger(expression, 16);
expression += "0x"; //$NON-NLS-1$
return new CMemoryBlockExtension( getDebugTarget(), expression, address );
}
private CStackFrame getStackFrame( IDebugElement selected ) throws DebugException {
if ( selected instanceof CStackFrame ) {
return (CStackFrame)selected;
}
if ( selected instanceof CThread ) {
IStackFrame frame = ((CThread)selected).getTopStackFrame();
if ( frame instanceof CStackFrame )
return (CStackFrame)frame;
}
return null;
}
public void save() {
ILaunchConfiguration config = getDebugTarget().getLaunch().getLaunchConfiguration();
try {
ILaunchConfigurationWorkingCopy wc = config.getWorkingCopy();
wc.setAttribute( ICDTLaunchConfigurationConstants.ATTR_DEBUGGER_MEMORY_BLOCKS, getMemento() );
wc.doSave();
}
catch( CoreException e ) {
CDebugCorePlugin.log( e.getStatus() );
}
}
/**
* Throws an internal error exception
*/
private void abort( String message, Throwable e ) throws CoreException {
IStatus s = new Status( IStatus.ERROR, CDebugCorePlugin.getUniqueIdentifier(), CDebugCorePlugin.INTERNAL_ERROR, message, e );
throw new CoreException( s );
}
public void dispose() {
}
}
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