re-implemented stack overflow monitoring, and user can now manually override the stack addresses for use with
custom linker scripts
This commit is contained in:
Fredrik Osterlind
parent
11d124882c
commit
8a084926e2
1 changed files with 182 additions and 72 deletions
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@ -31,126 +31,236 @@
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package se.sics.cooja.mspmote.plugins;
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import java.awt.BorderLayout;
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import java.awt.GridLayout;
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import java.awt.Color;
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import java.awt.event.ActionEvent;
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import java.awt.event.ActionListener;
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import java.util.Observable;
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import java.util.Observer;
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import java.io.IOException;
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import java.util.ArrayList;
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import java.util.Collection;
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import javax.swing.JButton;
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import javax.swing.JLabel;
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import javax.swing.JOptionPane;
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import javax.swing.JPanel;
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import javax.swing.JToggleButton;
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import javax.swing.SwingUtilities;
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import org.apache.log4j.Logger;
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import org.jdom.Element;
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import se.sics.cooja.ClassDescription;
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import se.sics.cooja.GUI;
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import se.sics.cooja.Mote;
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import se.sics.cooja.MotePlugin;
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import se.sics.cooja.MoteTimeEvent;
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import se.sics.cooja.PluginType;
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import se.sics.cooja.Simulation;
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import se.sics.cooja.SupportedArguments;
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import se.sics.cooja.VisPlugin;
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import se.sics.cooja.mspmote.MspMote;
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import se.sics.cooja.mspmote.MspMoteType;
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import se.sics.mspsim.core.MSP430;
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import se.sics.mspsim.core.Memory.AccessMode;
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import se.sics.mspsim.core.RegisterMonitor;
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import se.sics.mspsim.ui.StackUI;
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import se.sics.mspsim.util.Utils;
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@ClassDescription("Msp Stack Watcher")
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@PluginType(PluginType.MOTE_PLUGIN)
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@SupportedArguments(motes = {MspMote.class})
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@SupportedArguments(motes = { MspMote.class })
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public class MspStackWatcher extends VisPlugin implements MotePlugin {
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private static Logger logger = Logger.getLogger(MspStackWatcher.class);
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private MspMote mspMote;
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private MSP430 cpu;
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private StackUI stackUI;
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private Simulation simulation;
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private Observer stackObserver = null;
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private JButton startButton;
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private JButton stopButton;
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private MSP430 cpu;
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private MspMote mspMote;
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private StackUI stackUI;
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private RegisterMonitor.Adapter registerMonitor = null;
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private JToggleButton toggleButton;
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private MoteTimeEvent increasePosTimeEvent;
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private Integer userOverriddenStack = null;
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private JLabel memLabel = new JLabel("");
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public MspStackWatcher(Mote mote, Simulation simulationToVisualize, GUI gui) {
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super("Msp Stack Watcher", gui);
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super("Msp Stack Watcher: " + mote, gui);
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this.mspMote = (MspMote) mote;
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cpu = mspMote.getCPU();
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simulation = simulationToVisualize;
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getContentPane().setLayout(new BorderLayout());
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// Register as stack observable
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if (stackObserver == null) {
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mspMote.getStackOverflowObservable().addObserver(stackObserver = new Observer() {
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public void update(Observable obs, Object obj) {
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simulation.stopSimulation();
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JOptionPane.showMessageDialog(
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MspStackWatcher.this,
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"Bad memory access!\nSimulation stopped.\n" +
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"\nCurrent stack pointer = 0x" + Utils.hex16(cpu.reg[MSP430.SP]) +
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"\nStart of heap = 0x" + Utils.hex16(cpu.getDisAsm().getMap().heapStartAddress),
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"Stack overflow", JOptionPane.ERROR_MESSAGE
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);
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toggleButton = new JToggleButton("Click to monitor for stack overflows");
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toggleButton.addActionListener(new ActionListener() {
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public void actionPerformed(ActionEvent e) {
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if (toggleButton.isSelected()) {
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toggleButton.setText("Monitoring for stack overflows");
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if (!activate(true)) {
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toggleButton.setBackground(Color.RED);
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toggleButton.setText("Monitoring for stack overflows - FAILED!");
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toggleButton.setSelected(false);
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}
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toggleButton.setBackground(null);
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} else {
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toggleButton.setBackground(null);
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toggleButton.setText("Click to monitor for stack overflows");
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deactivate();
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}
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});
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}
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// Create stack overflow controls
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startButton = new JButton("Stop simulation on stack overflow");
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startButton.addActionListener(new ActionListener() {
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public void actionPerformed(ActionEvent e) {
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startButton.setEnabled(false);
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stopButton.setEnabled(true);
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mspMote.monitorStack(true);
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}
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});
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stopButton = new JButton("Cancel");
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stopButton.setEnabled(false);
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stopButton.addActionListener(new ActionListener() {
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public void actionPerformed(ActionEvent e) {
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startButton.setEnabled(true);
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stopButton.setEnabled(false);
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mspMote.monitorStack(false);
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}
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});
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// Create nfi's stack viewer
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stackUI = new StackUI(cpu);
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stackUI.init("MSPSim stack", mspMote.registry);
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/* Create Mspsim stack viewer */
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stackUI = new StackUI(cpu, -1); /* Needs manual updates */
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stackUI.init("Stack usage", mspMote.registry);
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stackUI.start();
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increasePosTimeEvent = new MoteTimeEvent(mspMote, 0) {
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public void execute(long t) {
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stackUI.requestIncreasePos();
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simulation.scheduleEvent(this, t + Simulation.MILLISECOND);
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}
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};
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simulation.scheduleEvent(increasePosTimeEvent, simulation.getSimulationTime());
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// Register as log listener
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/*if (logObserver == null && mspMote.getInterfaces().getLog() != null) {
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mspMote.getInterfaces().getLog().addObserver(logObserver = new Observer() {
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public void update(Observable obs, Object obj) {
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stackUI.addNote(mspMote.getInterfaces().getLog().getLastLogMessage());
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}
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});
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}*/
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JPanel controlPanel = new JPanel(new GridLayout(2,1));
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controlPanel.add(startButton);
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controlPanel.add(stopButton);
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add(BorderLayout.NORTH, memLabel);
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add(BorderLayout.CENTER, stackUI);
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add(BorderLayout.SOUTH, controlPanel);
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add(BorderLayout.SOUTH, toggleButton);
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setSize(240, 300);
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setSize(400, 300);
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}
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// Tries to select this plugin
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private boolean activate(boolean gui) {
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try {
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setSelected(true);
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} catch (java.beans.PropertyVetoException e) {
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// Could not select
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int stack = ((MspMoteType) mspMote.getType()).getELF().getMap().stackStartAddress;
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if (gui) {
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String s = (String)JOptionPane.showInputDialog(
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GUI.getTopParentContainer(),
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"With default linker scripts the stack starts at 0x" + Integer.toHexString(stack) + ".\n" +
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"If you are using a modified linker script, you may here correct the stack start address.",
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"Enter stack start address",
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JOptionPane.PLAIN_MESSAGE,
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null,
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null,
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"0x" + Integer.toHexString(userOverriddenStack!=null?userOverriddenStack:stack));
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userOverriddenStack = null;
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if (s != null) {
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try {
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int newStack = Integer.decode(s);
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if (newStack != stack) {
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userOverriddenStack = newStack;
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}
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} catch (Exception e) {
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logger.error("Error parsing provided stack address: " + s, e);
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return false;
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}
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}
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}
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if (userOverriddenStack != null) {
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stack = userOverriddenStack;
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}
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int heap = ((MspMoteType) mspMote.getType()).getELF().getMap().heapStartAddress;
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if (stack < 0) {
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stack = cpu.config.ramStart + cpu.config.ramSize;
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}
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logger.debug("SP starts at: 0x" + Integer.toHexString(stack));
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logger.debug("Heap starts at: 0x" + Integer.toHexString(heap));
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logger.debug("Available stack: " + (stack-heap) + " bytes");
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memLabel.setText(String.format("Stack 0x%x, heap 0x%x", stack, heap));
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if (stack < 0 || heap < 0) {
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return false;
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}
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/*final int stackStartAddress = stack;*/
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final int heapStartAddress = heap;
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registerMonitor = new RegisterMonitor.Adapter() {
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int min = Integer.MAX_VALUE;
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public void notifyWriteBefore(int register, final int sp, AccessMode mode) {
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/*logger.debug("SP is now: 0x" + Integer.toHexString(sp));*/
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final int available = sp - heapStartAddress;
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if (available < min) {
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min = available;
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String details = mspMote.getExecutionDetails();
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if (details != null) {
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logger.info(String.format(mspMote + ": Maximum stack usage: 0x%x, available stack 0x%x", sp, available));
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logger.info(details);
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}
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}
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if (available <= 0) {
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SwingUtilities.invokeLater(new Runnable() {
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public void run() {
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JOptionPane.showMessageDialog(GUI.getTopParentContainer(),
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String.format("Stack overflow!\n\n" +
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"\tSP = 0x%05x\n" +
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"\tHeap start = 0x%05x\n\n" +
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"\tAvailable = %d\n", sp, heapStartAddress, available),
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"Stack overflow on " + mspMote,
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JOptionPane.ERROR_MESSAGE);
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}
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});
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simulation.stopSimulation();
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}
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}
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};
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cpu.addRegisterWriteMonitor(MSP430.SP, registerMonitor);
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} catch (IOException e) {
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logger.warn("Stack monitoring failed: " + e.getMessage(), e);
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registerMonitor = null;
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return false;
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}
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return true;
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}
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private void deactivate() {
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userOverriddenStack = null;
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if (registerMonitor != null) {
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cpu.removeRegisterWriteMonitor(MSP430.SP, registerMonitor);
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registerMonitor = null;
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}
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}
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public Collection<Element> getConfigXML() {
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ArrayList<Element> config = new ArrayList<Element>();
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Element element;
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if (userOverriddenStack != null) {
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element = new Element("stack");
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element.setText("0x" + Integer.toHexString(userOverriddenStack));
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config.add(element);
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}
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element = new Element("monitoring");
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element.setText("" + toggleButton.isSelected());
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config.add(element);
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return config;
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}
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public boolean setConfigXML(Collection<Element> configXML,
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boolean visAvailable) {
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for (Element element : configXML) {
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if (element.getName().equals("monitoring")) {
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boolean monitor = Boolean.parseBoolean(element.getText());
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if (monitor) {
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if (activate(false)) {
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toggleButton.setSelected(true);
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}
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}
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} else if (element.getName().equals("stack")) {
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userOverriddenStack = Integer.decode(element.getText());
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}
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}
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return true;
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}
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public void closePlugin() {
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mspMote.getStackOverflowObservable().deleteObserver(stackObserver);
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increasePosTimeEvent.remove();
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stackUI.stop();
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deactivate();
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}
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public Mote getMote() {
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