/** Call this method to send a disassembly update through the Socket. */
public static void updateDisassembly(PrintWriter out, SimCore s, Asm a) {
out.println("disassemblyUpdate"); // Signal Eclipse that a disassembly update is incoming.
for (int i = 0; i < a.getAddrTable().length; i++) { // Now, send the data:
out.println(a.getAddrTable()[i]);
out.println(s.bus.read(a.getAddrTable()[i]));
}
out.println("endofaddrs"); // Signal Eclipse that we have sent the entire disassembly.
out.println(s.pc.eval()); // Send the value of the program counter
}
public static void main(String[] args) {
// ------First, setup the sockets that will be used to communicate with
// Eclipse:-----------------------------------------------------------//
toSim = null;
fromSim = null;
PrintWriter out = null;
BufferedReader in = null;
System.out.println("portTo: " + args[0]);
System.out.println("portFrom: " + args[1]);
try {
toSim = new Socket("localhost", Integer.parseInt(args[0]));
fromSim = new Socket("localhost", Integer.parseInt(args[1]));
out = new PrintWriter(fromSim.getOutputStream(), true);
in = new BufferedReader(new InputStreamReader(toSim.getInputStream()));
} catch (NumberFormatException e) {
e.printStackTrace();
} catch (UnknownHostException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
// Setup a shutdown hook that closes the sockets when the process ends:
Runtime.getRuntime()
.addShutdownHook(
new Thread(
new Runnable() {
public void run() {
try {
toSim.close();
fromSim.close();
} catch (IOException e) {
System.out.println("Error closing sockets!");
e.printStackTrace();
}
}
},
"Shutdown-thread"));
// ------Now, we have to setup the
// SimCore:--------------------------------------------------------------------------------------------------//
/* I don't know exactly what this is, but a lot
* of the methods that are called after this use
* CallBackRegistry in some way, and need it to
* be initialized somehow. This code does this:
*/
if (!CallbackRegistry.INITIALIZED) CallbackRegistry.setup(null);
ArrayList<PLPAsmSource> asms =
getAsms(); // ------------------//Convert the .asm files on disk into an ArrayList of
// PLPAsmSource objects
Asm a =
new Asm(asms); // -------------------------------------//Feed the ArrayList holding our .asm
// source code into an assembler object
a.preprocess(
0); // -------------------------------------------//the assembler object does it's magic
// converting our code into a form...
a.assemble(); // ----------------------------------------------//...that the SimCore can
// understand.
SimCore s =
new SimCore(
a,
a.getAddrTable()[
0]); // -----------//Create the SimCore, passing it the assembler object and the
// address the assembler has determined to be the starting address of RAM
// memory.
s.bus.add(
new MemModule(
a.getAddrTable()[0],
2048,
true)); // -//Here we add the RAM memory to the SimCore. This is where the instructions
// assembled by the assembler are actually stored while the PLP assembly code is
// running.
s.bus.enableAllModules(); // ----------------------------------//Gotta enable the modules in
// order for them to work!
s.reset(); // -------------------------------------------------//Perform an initial reset. It
// doesn't seem to work without this, so make sure you do it!
// ------SimCore is now setup, now to begin a loop where we listen for commands sent from
// Eclipse---------------------------------------------//
// Here is the int into which we will be taking commands sent from Eclipse:
String commandsIn = null;
// Command input loop:
while (true) {
try {
commandsIn = in.readLine();
if (commandsIn.equals(
"stepOnce")) { // "stepOnce" is a command to cause the simulation to step once and then
// send updates
// Step once through the simulation:
s.stepW();
// Update the disassembly:
updateDisassembly(out, s, a);
// Update the Registers:
updateRegisters(out, s);
} else if (commandsIn.equals("init")) {
updateDisassembly(out, s, a);
updateRegisters(out, s);
} else System.out.println("Not a valid command.");
} catch (IOException e) {
e.printStackTrace();
}
}
}
