adolphenom
99 lines
4.7 KiB
Java
99 lines
4.7 KiB
Java
package mars.venus;
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import mars.*;
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import mars.mips.hardware.*;
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import java.awt.*;
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import java.awt.event.*;
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import javax.swing.*;
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/*
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Copyright (c) 2003-2009, Pete Sanderson and Kenneth Vollmar
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Developed by Pete Sanderson (psanderson@otterbein.edu)
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and Kenneth Vollmar (kenvollmar@missouristate.edu)
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Permission is hereby granted, free of charge, to any person obtaining
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a copy of this software and associated documentation files (the
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"Software"), to deal in the Software without restriction, including
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without limitation the rights to use, copy, modify, merge, publish,
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distribute, sublicense, and/or sell copies of the Software, and to
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permit persons to whom the Software is furnished to do so, subject
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to the following conditions:
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The above copyright notice and this permission notice shall be
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included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
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ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
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CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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(MIT license, http://www.opensource.org/licenses/mit-license.html)
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*/
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/**
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* Action for the Run -> Backstep menu item
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*/
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public class RunBackstepAction extends GuiAction {
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String name;
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ExecutePane executePane;
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public RunBackstepAction(String name, Icon icon, String descrip,
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Integer mnemonic, KeyStroke accel, VenusUI gui) {
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super(name, icon, descrip, mnemonic, accel, gui);
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}
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/**
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* perform next simulated instruction step.
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*/
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public void actionPerformed(ActionEvent e){
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name = this.getValue(Action.NAME).toString();
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executePane = mainUI.getMainPane().getExecutePane();
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boolean done = false;
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if(!FileStatus.isAssembled()){
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// note: this should never occur since backstepping is only enabled after successful assembly.
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JOptionPane.showMessageDialog(mainUI,"The program must be assembled before it can be run.");
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return;
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}
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mainUI.setStarted(true);
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mainUI.messagesPane.setSelectedComponent(mainUI.messagesPane.runTab);
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executePane.getTextSegmentWindow().setCodeHighlighting(true);
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if (Globals.getSettings().getBackSteppingEnabled()) {
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boolean inDelaySlot = Globals.program.getBackStepper().inDelaySlot(); // Added 25 June 2007
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Memory.getInstance().addObserver(executePane.getDataSegmentWindow());
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RegisterFile.addRegistersObserver(executePane.getRegistersWindow());
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Coprocessor0.addRegistersObserver(executePane.getCoprocessor0Window());
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Coprocessor1.addRegistersObserver(executePane.getCoprocessor1Window());
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Globals.program.getBackStepper().backStep();
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Memory.getInstance().deleteObserver(executePane.getDataSegmentWindow());
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RegisterFile.deleteRegistersObserver(executePane.getRegistersWindow());
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executePane.getRegistersWindow().updateRegisters();
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executePane.getCoprocessor1Window().updateRegisters();
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executePane.getCoprocessor0Window().updateRegisters();
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executePane.getDataSegmentWindow().updateValues();
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executePane.getTextSegmentWindow().highlightStepAtPC(inDelaySlot); // Argument aded 25 June 2007
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FileStatus.set(FileStatus.RUNNABLE);
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// if we've backed all the way, disable the button
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// if (Globals.program.getBackStepper().empty()) {
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// ((AbstractAction)((AbstractButton)e.getSource()).getAction()).setEnabled(false);
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//}
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/*
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if (pe !=null) {
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RunGoAction.resetMaxSteps();
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mainUI.getMessagesPane().postMarsMessage(
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pe.errors().generateErrorReport());
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mainUI.getMessagesPane().postMarsMessage(
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"\n"+name+": execution terminated with errors.\n\n");
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mainUI.getRegistersPane().setSelectedComponent(executePane.getCoprocessor0Window());
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FileStatus.set(FileStatus.TERMINATED); // should be redundant.
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executePane.getTextSegmentWindow().setCodeHighlighting(true);
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executePane.getTextSegmentWindow().unhighlightAllSteps();
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executePane.getTextSegmentWindow().highlightStepAtAddress(RegisterFile.getProgramCounter()-4);
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}
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*/
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mainUI.setReset(false);
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}
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}
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} |