private void execute() {
if (sourceFile == null) {
printError("-i : No source file specified");
}
if (assembler == null || computer == null) {
printError("-f : No format specified");
}
if (assembler.hasErrors()) {
printError("Unable to execute file due to errors");
}
print("...preparing to execute program");
if (trace) {
print("...opening computer trace files");
addTraceListeners();
}
computer.setExecutionSpeed(ExecutionSpeed.FULL);
computer.setInstructions(assembler.getInstructions());
computer.addComputerListener(
new ComputerAdapter() {
public void computerStarted(Computer computer) {
print("...Execution started");
}
public void computerStopped(Computer computer) {
print("...Execution complete");
}
});
computer.execute();
}
private void addTraceListeners() {
try {
final PrintWriter memoryTrace = new PrintWriter(new FileWriter(baseFileName + ".mem"));
final PrintWriter registerTrace = new PrintWriter(new FileWriter(baseFileName + ".reg"));
final PrintWriter decoderTrace = new PrintWriter(new FileWriter(baseFileName + ".dec"));
computer
.getMemory()
.addMemoryListener(
new MemoryListener() {
public void memoryReadFrom(Memory memory, int address, String value) {
memoryTrace.println("READ," + address + "," + value);
}
public void memoryWroteTo(Memory memory, int address, String value) {
memoryTrace.println("WRITE," + address + "," + value);
}
public void memoryError(Memory memory, Throwable error) {
memoryTrace.println("ERROR: " + error.getMessage());
printError(error.getMessage());
}
});
computer
.getRegisterStore()
.addRegisterListener(
new RegisterListener() {
public void registerReadFrom(
RegisterStore registers, Register register, String value) {
registerTrace.println("READ," + register.getMnemonic() + "," + value);
}
public void registerWroteTo(
RegisterStore registers, Register register, String value) {
registerTrace.println("WRITE," + register.getMnemonic() + "," + value);
}
});
computer
.getInstructionDecoder()
.addDecoderListener(
new InstructionDecoderListener() {
public void instructionDecoded(InstructionDecoder decoder, String instruction) {
decoderTrace.println(instruction);
}
public void decodeError(
InstructionDecoder decoder, String instruction, Throwable error) {
decoderTrace.println("Decoding '" + instruction + "'...");
decoderTrace.print("ERROR: " + error.getMessage());
printError(error.getMessage());
}
});
computer.addComputerListener(
new ComputerAdapter() {
public void computerStopped(Computer computer) {
// Close file output streams when execution is finished
memoryTrace.close();
registerTrace.close();
decoderTrace.close();
}
public void computerError(Computer computer, Throwable error) {
printError(error.getMessage());
}
});
} catch (IOException e) {
printError(e.getMessage());
}
}