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java.lang.Objectjava.util.Observable
mars.simulator.Simulator
public class Simulator
Used to simulate the execution of an assembled MIPS program.
Nested Class Summary | |
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static interface |
Simulator.StopListener
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Field Summary | |
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static int |
BREAKPOINT
various reasons for simulate to end... |
static int |
CLIFF_TERMINATION
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static int |
EXCEPTION
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static int |
externalInterruptingDevice
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static int |
MAX_STEPS
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static int |
NO_DEVICE
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static int |
NORMAL_TERMINATION
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static int |
PAUSE_OR_STOP
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Method Summary | |
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void |
addStopListener(Simulator.StopListener l)
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static Simulator |
getInstance()
Returns the Simulator object |
static boolean |
inDelaySlot()
Determine whether or not the next instruction to be executed is in a "delay slot". |
void |
removeStopListener(Simulator.StopListener l)
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boolean |
simulate(MIPSprogram p,
int pc,
int maxSteps,
int[] breakPoints,
AbstractAction actor)
Simulate execution of given MIPS program. |
void |
stopExecution(AbstractAction actor)
Set the volatile stop boolean variable checked by the execution thread at the end of each MIPS instruction execution. |
Methods inherited from class java.util.Observable |
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addObserver, clearChanged, countObservers, deleteObserver, deleteObservers, hasChanged, notifyObservers, notifyObservers, setChanged |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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public static final int NO_DEVICE
public static volatile int externalInterruptingDevice
public static final int BREAKPOINT
public static final int EXCEPTION
public static final int MAX_STEPS
public static final int NORMAL_TERMINATION
public static final int CLIFF_TERMINATION
public static final int PAUSE_OR_STOP
Method Detail |
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public static Simulator getInstance()
public static boolean inDelaySlot()
public boolean simulate(MIPSprogram p, int pc, int maxSteps, int[] breakPoints, AbstractAction actor) throws ProcessingException
p
- The MIPSprogram to be simulated.pc
- address of first instruction to simulate; this goes into program countermaxSteps
- maximum number of steps to perform before returning false (0 or less means no max)breakPoints
- array of breakpoint program counter values, use null if noneactor
- the GUI component responsible for this call, usually GO or STEP. null if none.
ProcessingException
- Throws exception if run-time exception occurs.public void stopExecution(AbstractAction actor)
public void addStopListener(Simulator.StopListener l)
public void removeStopListener(Simulator.StopListener l)
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