private void assemble() {
if (sourceFile == null) {
printError("-i : No source file specified");
}
if (assembler == null) {
printError("-f : No format specified");
}
print("...Assembling " + sourceFile.getName());
assembler.assemble(sourceFile);
print("..." + assembler.getErrors().length + " error(s) found");
try {
PrintWriter output = null;
if (!assembler.hasErrors()) {
if (!machineCode) {
print("...saving .pco file");
output = new PrintWriter(new FileWriter(baseFileName + ".pco"));
for (Instruction instruction : assembler.getInstructions()) {
output.print(instruction.getInstruction());
output.println(" ;" + instruction.getSourceCode());
}
} else {
print("Machine code file varified");
}
} else {
print("...saving .err file");
output = new PrintWriter(new FileWriter(baseFileName + ".err"));
for (AssemblyError error : assembler.getErrors()) {
output.println(error.toString());
}
}
if (output != null) {
output.close();
}
} catch (IOException e) {
printError(e.getMessage());
}
}
private void doInput(String[] arguments) {
if (arguments.length < 2) {
printError("-i : No filename specified");
}
if (arguments[1].endsWith(".pco")) {
machineCode = true;
assembler = new MachineCodeAssembler();
} else {
if (!new File(arguments[1]).exists()) {
print("...no file extension specified. Guessing .pca");
arguments[1] = arguments[1] + ".pca";
}
}
try {
sourceFile = SourceFile.load(arguments[1]);
baseFileName = arguments[1].substring(0, arguments[1].lastIndexOf("."));
} catch (IOException e) {
printError(e.getMessage());
}
}
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());
}
}