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24
.vscode/launch.json vendored
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@ -1,24 +0,0 @@
{
// Use IntelliSense to learn about possible attributes.
// Hover to view descriptions of existing attributes.
// For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
"version": "0.2.0",
"configurations": [
{
"type": "java",
"name": "Launch Current File",
"request": "launch",
"mainClass": "${file}",
"args": ["assignment-5/src/configuration/config.xml", "assignment-5/src/hello.txt", "assignment-5/supporting_files/test_cases/descending.out"]
},
{
"type": "java",
"name": "Launch Main",
"request": "launch",
"mainClass": "main.Main",
"projectName": "cs311-lab_a8b7b69f",
"args": ["configuration/config.xml", "hello.txt", "../supporting_files/test_cases/fibonacci.out"]
}
]
}

8
assignment-1/src/palindrome.asm
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@ -1,6 +1,6 @@
.data
a:
1777721
177771
.text
main:
load %x0, $a, %x3
@ -8,7 +8,7 @@ init:
addi %x3, 0, %x11
addi %x3, 0, %x17
addi %x0, 1, %x15
addi %x0, 0, %x16
addi %x0, 0, %x17
forloop:
divi %x3, 10, %x3
muli %x15, 10, %x15
@ -19,12 +19,12 @@ end1:
forloop1:
divi %x11, 10, %x11
mul %x31, %x15, %x3
add %x16, %x3, %x16
add %x17, %x3, %x17
divi %x15, 10, %x15
beq %x11, 0, end2
jmp forloop1
end2:
beq %x16, %x17, write1
beq %x17, %x17, write1
subi %x10, 1, %x10
end
write1:

2
assignment-1/src/prime.asm
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@ -14,7 +14,7 @@ round:
check:
beq %x31, 0, notAnswer
addi %x3, 1, %x3
blt %x3, %x11, round
blt %x3, %x4, round
Answer:
addi %x0, 1, %x10
end

18
assignment-1/src/prime1.asm
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@ -1,18 +0,0 @@
.data
n:x5x5x5
59
.text
main:
load %x0, $n, %x3
addi %x4, 2, %x4
forloop:
div %x3, %x4, %x6
beq %x31, %x7, nonprime
addi %x4, 1, %x4
blt %x4, %x3, forloop
prime:
addi %x5, 1, %x5
end
nonprime:
subi %x5, 1, %x5
end

22
assignment-2/.vscode/launch.json vendored
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@ -1,22 +0,0 @@
{
// Use IntelliSense to learn about possible attributes.
// Hover to view descriptions of existing attributes.
// For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
"version": "0.2.0",
"configurations": [
{
"type": "java",
"name": "Launch Current File",
"request": "launch",
"mainClass": "${file}",
"args": ["../assignment-1/src/descending.asm", "descending.out"]
},
{
"type": "java",
"name": "Launch Main",
"request": "launch",
"mainClass": "main.Main",
"projectName": "assignment-2_d93382a2"
}
]
}

9
assignment-2/200010024_200010033-1/src/1.asm
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@ -1,9 +0,0 @@
.data
a:
10
b:
20
.text
main:
load %x0, $a, %x4
end

BIN
assignment-2/200010024_200010033-1/src/1.out
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Binary file not shown.

116
assignment-2/200010024_200010033-1/src/configuration/Configuration.java
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@ -1,116 +0,0 @@
package configuration;
import java.io.File;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import generic.Misc;
public class Configuration {
public static int ALU_count;
public static int ALU_latency;
public static int ALU_reciprocal_of_throughput;
public static int multiplier_count;
public static int multiplier_latency;
public static int multiplier_reciprocal_of_throughput;
public static int divider_count;
public static int divider_latency;
public static int divider_reciprocal_of_throughput;
public static int L1i_numberOfLines;
public static int L1i_latency;
public static int L1i_associativity;
public static String L1i_replacementPolicy;
public static int L1d_numberOfLines;
public static int L1d_latency;
public static int L1d_associativity;
public static String L1d_replacementPolicy;
public static int L2_numberOfLines;
public static int L2_latency;
public static int L2_associativity;
public static String L2_replacementPolicy;
public static int mainMemoryLatency;
public static void parseConfiguratioFile(String configFileName)
{
Document doc = null;
try
{
File file = new File(configFileName);
DocumentBuilderFactory DBFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder DBuilder = DBFactory.newDocumentBuilder();
doc = DBuilder.parse(file);
doc.getDocumentElement().normalize();
}
catch(Exception e)
{
e.printStackTrace();
Misc.printErrorAndExit("Error in reading config file : " + e);
}
NodeList nodeLst = doc.getElementsByTagName("ALU");
Element elmnt = (Element) nodeLst.item(0);
ALU_count = Integer.parseInt(getImmediateString("Count", elmnt));
ALU_latency = Integer.parseInt(getImmediateString("Latency", elmnt));
ALU_reciprocal_of_throughput = Integer.parseInt(getImmediateString("ReciprocalOfThroughput", elmnt));
nodeLst = doc.getElementsByTagName("Multiplier");
elmnt = (Element) nodeLst.item(0);
multiplier_count = Integer.parseInt(getImmediateString("Count", elmnt));
multiplier_latency = Integer.parseInt(getImmediateString("Latency", elmnt));
multiplier_reciprocal_of_throughput = Integer.parseInt(getImmediateString("ReciprocalOfThroughput", elmnt));
nodeLst = doc.getElementsByTagName("Divider");
elmnt = (Element) nodeLst.item(0);
divider_count = Integer.parseInt(getImmediateString("Count", elmnt));
divider_latency = Integer.parseInt(getImmediateString("Latency", elmnt));
divider_reciprocal_of_throughput = Integer.parseInt(getImmediateString("ReciprocalOfThroughput", elmnt));
nodeLst = doc.getElementsByTagName("L1iCache");
elmnt = (Element) nodeLst.item(0);
L1i_numberOfLines = Integer.parseInt(getImmediateString("NumberOfLines", elmnt));
L1i_latency = Integer.parseInt(getImmediateString("Latency", elmnt));
L1i_associativity = Integer.parseInt(getImmediateString("Associativity", elmnt));
L1i_replacementPolicy = getImmediateString("ReplacementPolicy", elmnt);
nodeLst = doc.getElementsByTagName("L1dCache");
elmnt = (Element) nodeLst.item(0);
L1d_numberOfLines = Integer.parseInt(getImmediateString("NumberOfLines", elmnt));
L1d_latency = Integer.parseInt(getImmediateString("Latency", elmnt));
L1d_associativity = Integer.parseInt(getImmediateString("Associativity", elmnt));
L1d_replacementPolicy = getImmediateString("ReplacementPolicy", elmnt);
nodeLst = doc.getElementsByTagName("L2Cache");
elmnt = (Element) nodeLst.item(0);
L2_numberOfLines = Integer.parseInt(getImmediateString("NumberOfLines", elmnt));
L2_latency = Integer.parseInt(getImmediateString("Latency", elmnt));
L2_associativity = Integer.parseInt(getImmediateString("Associativity", elmnt));
L2_replacementPolicy = getImmediateString("ReplacementPolicy", elmnt);
nodeLst = doc.getElementsByTagName("Configuration");
elmnt = (Element) nodeLst.item(0);
mainMemoryLatency = Integer.parseInt(getImmediateString("MainMemoryLatency", elmnt));
}
private static String getImmediateString(String tagName, Element parent) // Get the immediate string value of a particular tag name under a particular parent tag
{
NodeList nodeLst = parent.getElementsByTagName(tagName);
if (nodeLst.item(0) == null)
{
Misc.printErrorAndExit("XML Configuration error : Item \"" + tagName + "\" not found inside the \"" + parent.getTagName() + "\" tag in the configuration file!!");
}
Element NodeElmnt = (Element) nodeLst.item(0);
NodeList resultNode = NodeElmnt.getChildNodes();
return ((Node) resultNode.item(0)).getNodeValue();
}
}

43
assignment-2/200010024_200010033-1/src/configuration/config.xml
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@ -1,43 +0,0 @@
<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
<Configuration>
<FunctionalUnits>
<ALU>
<Count>2</Count>
<Latency>1</Latency>
<ReciprocalOfThroughput>1</ReciprocalOfThroughput>
</ALU>
<Multiplier>
<Count>1</Count>
<Latency>4</Latency>
<ReciprocalOfThroughput>1</ReciprocalOfThroughput>
</Multiplier>
<Divider>
<Count>1</Count>
<Latency>10</Latency>
<ReciprocalOfThroughput>1</ReciprocalOfThroughput>
</Divider>
</FunctionalUnits>
<L1iCache>
<NumberOfLines>256</NumberOfLines>
<Latency>2</Latency>
<Associativity>4</Associativity>
<ReplacementPolicy>LRU</ReplacementPolicy>
</L1iCache>
<L1dCache>
<NumberOfLines>256</NumberOfLines>
<Latency>2</Latency>
<Associativity>4</Associativity>
<ReplacementPolicy>LRU</ReplacementPolicy>
</L1dCache>
<L2Cache>
<NumberOfLines>2048</NumberOfLines>
<Latency>10</Latency>
<Associativity>4</Associativity>
<ReplacementPolicy>LRU</ReplacementPolicy>
</L2Cache>
<MainMemoryLatency>40</MainMemoryLatency>
</Configuration>

1
assignment-2/200010024_200010033-1/src/generic/.cph/.Simulator.java_74fc5dae77a3b9a48197eb148ed1e37a.prob
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@ -1 +0,0 @@
{"name":"Local: Simulator","url":"c:\\Users\\karth\\OneDrive\\Desktop\\new\\src\\generic\\Simulator.java","tests":[{"id":1662603879409,"input":"","output":""},{"id":1662603899098,"input":"","output":""}],"interactive":false,"memoryLimit":1024,"timeLimit":3000,"srcPath":"c:\\Users\\karth\\OneDrive\\Desktop\\new\\src\\generic\\Simulator.java","group":"local","local":true}

96
assignment-2/200010024_200010033-1/src/generic/Instruction.java
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@ -1,96 +0,0 @@
package generic;
public class Instruction {
public enum OperationType {add, addi, sub, subi, mul, muli, div, divi, and, andi, or, ori, xor, xori, slt, slti, sll, slli, srl, srli, sra, srai, load, store, jmp, beq, bne, blt, bgt, end};
int programCounter;
OperationType operationType;
Operand sourceOperand1;
Operand sourceOperand2;
Operand destinationOperand;
public int getProgramCounter() {
return programCounter;
}
public void setProgramCounter(int programCounter) {
this.programCounter = programCounter;
}
public OperationType getOperationType() {
return operationType;
}
public void setOperationType(OperationType operationType) {
this.operationType = operationType;
}
public Operand getSourceOperand1() {
return sourceOperand1;
}
public void setSourceOperand1(Operand sourceOperand1) {
this.sourceOperand1 = sourceOperand1;
}
public Operand getSourceOperand2() {
return sourceOperand2;
}
public void setSourceOperand2(Operand sourceOperand2) {
this.sourceOperand2 = sourceOperand2;
}
public Operand getDestinationOperand() {
return destinationOperand;
}
public void setDestinationOperand(Operand destinationOperand) {
this.destinationOperand = destinationOperand;
}
public String toString()
{
if(sourceOperand1 != null)
{
if(sourceOperand2 != null)
{
if(destinationOperand != null)
{
return "PC="+ programCounter + "\t" + operationType + "\t" + sourceOperand1 + "\t" + sourceOperand2 + "\t" + destinationOperand + "\n";
}
else
{
return "PC="+ programCounter + "\t" + operationType + "\t" + sourceOperand1 + "\t" + sourceOperand2 + "\tnull" + "\n";
}
}
else
{
if(destinationOperand != null)
{
return "PC="+ programCounter + "\t" + operationType + "\t" + sourceOperand1 + "\tnull" + "\t" + destinationOperand + "\n";
}
else
{
return "PC="+ programCounter + "\t" + operationType + "\t" + sourceOperand1 + "\tnull" + "\tnull" + "\n";
}
}
}
else
{
if(sourceOperand2 != null)
{
if(destinationOperand != null)
{
return "PC="+ programCounter + "\t" + operationType + "\tnull" + "\t" + sourceOperand2 + "\t" + destinationOperand + "\n";
}
else
{
return "PC="+ programCounter + "\t" + operationType + "\tnull" + "\t" + sourceOperand2 + "\tnull" + "\n";
}
}
else
{
if(destinationOperand != null)
{
return "PC="+ programCounter + "\t" + operationType + "\tnull" + "\tnull" + "\t" + destinationOperand + "\n";
}
else
{
return "PC="+ programCounter + "\t" + operationType + "\tnull" + "\tnull" + "\tnull" + "\n";
}
}
}
}
}

10
assignment-2/200010024_200010033-1/src/generic/Misc.java
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@ -1,10 +0,0 @@
package generic;
public class Misc {
public static void printErrorAndExit(String message)
{
System.err.println(message);
System.exit(1);
}
}

41
assignment-2/200010024_200010033-1/src/generic/Operand.java
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@ -1,41 +0,0 @@
package generic;
public class Operand {
public enum OperandType {Register, Immediate, Label};
OperandType operandType;
int value;
String labelValue; //only applicable for Label type;
//Note that Label type is only applicable for functional emulation of assembly file
public OperandType getOperandType() {
return operandType;
}
public void setOperandType(OperandType operandType) {
this.operandType = operandType;
}
public int getValue() {
return value;
}
public void setValue(int value) {
this.value = value;
}
public String getLabelValue() {
return labelValue;
}
public void setLabelValue(String labelValue) {
this.labelValue = labelValue;
}
public String toString()
{
if(operandType == OperandType.Register || operandType == OperandType.Immediate)
{
return "[" + operandType.toString() + ":" + value + "]";
}
else
{
return "[" + operandType.toString() + ":" + labelValue + "]";
}
}
}

268
assignment-2/200010024_200010033-1/src/generic/ParsedProgram.java
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@ -1,268 +0,0 @@
package generic;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Scanner;
import java.util.regex.Pattern;
import generic.Instruction.OperationType;
import generic.Operand.OperandType;
public class ParsedProgram {
static ArrayList<Instruction> code = new ArrayList<Instruction>();
static int mainFunctionAddress;
static int firstCodeAddress;
static ArrayList<Integer> data = new ArrayList<Integer>();
public static void setMainFunctionAddress(int addr)
{
mainFunctionAddress = addr;
}
public static void setFirstCodeAddress(int addr)
{
firstCodeAddress = addr;
}
public static Instruction getInstructionAt(int programCounter)
{
return code.get(programCounter - firstCodeAddress);
}
static HashMap<String, Integer> symtab = new HashMap<String,Integer>();
public static int parseDataSection(String assemblyProgramFile)
{
FileInputStream inputStream = null;
try
{
inputStream = new FileInputStream(assemblyProgramFile);
}
catch(FileNotFoundException e) {
Misc.printErrorAndExit(e.toString());
}
Scanner sc=new Scanner(inputStream);
int address = 0; //Store data staring from 1st memory location. At 0th location we denote the start of the code section.
while(sc.hasNextLine()) //TODO 3 loops?
{
String line=sc.nextLine();
if(line.contains(".data")) //Processing the .data section
{
line=sc.next();
do
{
if(Pattern.matches("[a-zA-Z]+([0-9]*)(:)", line))
{
ParsedProgram.symtab.put(line.replaceAll("[^a-zA-Z]",""), address);//TODO removed statements that were adding data to the code arraylist
while(Pattern.matches("-?\\d+", line=sc.next()))
{
data.add(Integer.parseInt(line));
address++;
}
}
}while(!line.contains(".text"));
break;
}
}
sc.close();
setFirstCodeAddress(address);
return address;
}
public static void parseCodeSection(String assemblyProgramFile, int firstCodeAddress)
{
FileInputStream inputStream = null;
try
{
inputStream = new FileInputStream(assemblyProgramFile);
}
catch(FileNotFoundException e) {
Misc.printErrorAndExit(e.toString());
}
Scanner sc=new Scanner(inputStream);
int address = firstCodeAddress;
while(sc.hasNextLine())
{
String line=sc.nextLine();
if(line.contains(".text"))
{
break;
}
}
while(sc.hasNextLine())
{
String line;
if(Pattern.matches("[a-zA-Z]+([0-9]*)(:)", line=sc.nextLine()))
{
ParsedProgram.symtab.put(line.replaceAll(":",""), address);
if(line.replaceAll(":","").compareTo("main") == 0)
{
ParsedProgram.setMainFunctionAddress(address);
}
}
else
{
ParsedProgram.code.add(address-firstCodeAddress, getInstructionFromString(line, address));
address++;
}
}
sc.close();
}
private static Instruction getInstructionFromString(String line, int address)
{
Instruction newInstruction = new Instruction();
newInstruction.setProgramCounter(address);
Scanner sc = new Scanner(line);
newInstruction.setOperationType(OperationType.valueOf(sc.next()));
switch(newInstruction.getOperationType())
{
//R3I type
case add :
case sub :
case mul :
case div :
case and :
case or :
case xor :
case slt :
case sll :
case srl :
case sra : {
newInstruction.setSourceOperand1(getRegisterOperandFromString(sc.next()));
newInstruction.setSourceOperand2(getRegisterOperandFromString(sc.next()));
newInstruction.setDestinationOperand(getRegisterOperandFromString(sc.next()));
break;
}
//R2I type
case addi :
case subi :
case muli :
case divi :
case andi :
case ori :
case xori :
case slti :
case slli :
case srli :
case srai :
case load :
case store : {
newInstruction.setSourceOperand1(getRegisterOperandFromString(sc.next()));
String str = sc.next();
if(Pattern.matches("-?\\d+(,)",str))
{
//absolute immediate
newInstruction.setSourceOperand2(getImmediateOperandFromString(str));
}
else
{
//label / symbol
newInstruction.setSourceOperand2(getLabelOperandFromString(str));
}
newInstruction.setDestinationOperand(getRegisterOperandFromString(sc.next()));
break;
}
case beq :
case bne :
case blt :
case bgt : {
newInstruction.setSourceOperand1(getRegisterOperandFromString(sc.next()));
newInstruction.setSourceOperand2(getRegisterOperandFromString(sc.next()));
String str = sc.next();
if(Pattern.matches("[0-9]+(,)",str))
{
//absolute immediate
newInstruction.setDestinationOperand(getImmediateOperandFromString(str));
}
else
{
//label / symbol
newInstruction.setDestinationOperand(getLabelOperandFromString(str));
}
break;
}
//RI type :
case jmp : {
String str = sc.next();
if(Pattern.matches("[0-9]+(,)",str))
{
//absolute immediate
newInstruction.setDestinationOperand(getImmediateOperandFromString(str));
}
else if(Pattern.matches("%x([0-9]{1,2})",str)) {
newInstruction.setDestinationOperand(getRegisterOperandFromString(str));
}
else
{
//label / symbol
newInstruction.setDestinationOperand(getLabelOperandFromString(str));
}
break;
}
case end : break;
default: Misc.printErrorAndExit("unknown instruction!!");
}
sc.close();
return newInstruction;
}
private static Operand getRegisterOperandFromString(String str)
{
Operand operand = new Operand();
operand.setOperandType(OperandType.Register);
operand.setValue(Integer.parseInt(str.replaceAll("[^0-9]", "")));
return operand;
}
private static Operand getImmediateOperandFromString(String str)
{
Operand operand = new Operand();
operand.setOperandType(OperandType.Immediate);
operand.setValue(Integer.parseInt(str.replaceAll("[^-?\\d+]","")));
return operand;
}
private static Operand getLabelOperandFromString(String str)
{
Operand operand = new Operand();
operand.setOperandType(OperandType.Label);
operand.setLabelValue(str.replaceAll("[$,]", ""));
return operand;
}
static void printState()
{
System.out.println("Symbol Table :");
System.out.println(Arrays.asList(symtab));
System.out.println("\nParsed instructions :");
System.out.println(Arrays.asList(code));
}
}

153
assignment-2/200010024_200010033-1/src/generic/Simulator.java
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@ -1,153 +0,0 @@
package generic;
import java.io.FileInputStream;
import generic.Operand.OperandType;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Scanner;
import java.io.ByteArrayInputStream;
import java.nio.ByteBuffer;
public class Simulator {
static FileInputStream inputcodeStream = null;
public static Map<String, String> map = new HashMap<>() {
{
put("add", "00000");
put("sub", "00010");
put("mul", "00100");
put("div", "00110");
put("and", "01000");
put("or", "01010");
put("xor", "01100");
put("slt", "01110");
put("sll", "10000");
put("srl", "10010");
put("sra", "10100");
put("beq", "11001");
put("bne", "11010");
put("blt", "11011");
put("bgt", "11100");
put("load", "10110");
put("store", "10111");
put("jmp", "11000");
put("addi", "00001");
put("subi", "00011");
put("muli", "00101");
put("divi", "00111");
put("andi", "01001");
put("ori", "01011");
put("xori", "01101");
put("slti", "01111");
put("slli", "10001");
put("srli", "10011");
put("srai", "10101");
put("end", "11101");
}
};
private static String toBinaryOfSpecificPrecision(int num, int lenOfTargetString) {
String binary = String.format("%" + lenOfTargetString + "s", Integer.toBinaryString(num)).replace(' ', '0');
return binary;
}
private static String convert_1(Operand inst, int precision) {
return toBinaryOfSpecificPrecision(inst.getValue(), precision);
}
private static String convert(Operand inst, int precision) {
if (inst == null)
return toBinaryOfSpecificPrecision(0, precision);
if (inst.getOperandType() == Operand.OperandType.Label)
return toBinaryOfSpecificPrecision(ParsedProgram.symtab.get(inst.getLabelValue()), precision);
return toBinaryOfSpecificPrecision(inst.getValue(), precision);
}
public static void setupSimulation(String assemblyProgramFile)
{
int firstCodeAddress = ParsedProgram.parseDataSection(assemblyProgramFile);
ParsedProgram.parseCodeSection(assemblyProgramFile, firstCodeAddress);
ParsedProgram.printState();
}
public static void assemble(String objectProgramFile)
{
FileOutputStream file;
try {
file = new FileOutputStream(objectProgramFile);
//write the firstCodeAddress to the file
file.write(ByteBuffer.allocate(4).putInt(ParsedProgram.firstCodeAddress).array());
//write the data to the file
for (var value : ParsedProgram.data) {
byte[] dataValue = ByteBuffer.allocate(4).putInt(value).array();
file.write(dataValue);
}
//assemble one instruction at a time, and write to the file
for (var instruction : ParsedProgram.code) {
String line = "";
String optype=(instruction.operationType).toString();
line += map.get(optype);
// int op = Integer.parseInt(line, 2);
int op=Integer.parseInt(map.get(optype),2);
int pc = instruction.getProgramCounter();
if (op <= 20 && op % 2 == 0) {
// R3 Type
line += convert_1(instruction.getSourceOperand1(), 5);
line += convert_1(instruction.getSourceOperand2(), 5);
line += convert_1(instruction.getDestinationOperand(), 5);
line += toBinaryOfSpecificPrecision(0, 12);
}
else if (op == 29) {
line += toBinaryOfSpecificPrecision(0, 27);
}
else if (op == 24) {
// RI Type
if (instruction.destinationOperand.getOperandType() == Operand.OperandType.Register) {
line += convert(instruction.getDestinationOperand(), 5);
line += toBinaryOfSpecificPrecision(0, 22);
} else {
line += toBinaryOfSpecificPrecision(0, 5);
int value = Integer.parseInt(convert(instruction.getDestinationOperand(), 5), 2) - pc;
String bin = toBinaryOfSpecificPrecision(value, 22);
line += bin.substring(bin.length() - 22);
}
}
else {
// R2I Type
if (op >= 25 && op <= 28) {
int value = Integer.parseInt(convert(instruction.getDestinationOperand(), 5), 2) - pc;
line += convert(instruction.getSourceOperand1(), 5);
line += convert(instruction.getSourceOperand2(), 5);
String bin = toBinaryOfSpecificPrecision(value, 17);
line += bin.substring(bin.length() - 17);
} else {
line += convert(instruction.getSourceOperand1(), 5);
line += convert(instruction.getDestinationOperand(), 5);
line += convert(instruction.getSourceOperand2(), 17);
}
}
int instInteger = (int) Long.parseLong(line, 2);
byte[] instBinary = ByteBuffer.allocate(4).putInt(instInteger).array();
file.write(instBinary);
}
file.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}

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assignment-2/200010024_200010033-1/src/generic/Statistics.java
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@ -1,13 +0,0 @@
package generic;
public class Statistics {
// TODO add your statistics here
// TODO write functions to update statistics
public static void printStatistics(String statFile)
{
// TODO add code here to print statistics in the output file
}
}

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assignment-2/200010024_200010033-1/src/main/Main.java
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@ -1,19 +0,0 @@
package main;
import configuration.Configuration;
import generic.Misc;
import generic.Statistics;
import generic.Simulator;
public class Main {
public static void main(String[] args) {
if(args.length != 2)
{
Misc.printErrorAndExit("usage: java -jar <path-to-jar-file> <path-to-assembly-program> <path-to-object-file>\n");
}
Simulator.setupSimulation(args[0]);
Simulator.assemble(args[1]);
}
}

1
assignment-2/CS311_assignment2

@ -1 +0,0 @@
Subproject commit f483ee2c38c1a35be3533c9433f7375235295d10

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assignment-2/bin/1.asm
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@ -1,9 +0,0 @@
.data
a:
10
b:
20
.text
main:
load %x0, $a, %x4
end

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assignment-2/bin/configuration/config.xml
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<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
<Configuration>
<FunctionalUnits>
<ALU>
<Count>2</Count>
<Latency>1</Latency>
<ReciprocalOfThroughput>1</ReciprocalOfThroughput>
</ALU>
<Multiplier>
<Count>1</Count>
<Latency>4</Latency>
<ReciprocalOfThroughput>1</ReciprocalOfThroughput>
</Multiplier>
<Divider>
<Count>1</Count>
<Latency>10</Latency>
<ReciprocalOfThroughput>1</ReciprocalOfThroughput>
</Divider>
</FunctionalUnits>
<L1iCache>
<NumberOfLines>256</NumberOfLines>
<Latency>2</Latency>
<Associativity>4</Associativity>
<ReplacementPolicy>LRU</ReplacementPolicy>
</L1iCache>
<L1dCache>
<NumberOfLines>256</NumberOfLines>
<Latency>2</Latency>
<Associativity>4</Associativity>
<ReplacementPolicy>LRU</ReplacementPolicy>
</L1dCache>
<L2Cache>
<NumberOfLines>2048</NumberOfLines>
<Latency>10</Latency>
<Associativity>4</Associativity>
<ReplacementPolicy>LRU</ReplacementPolicy>
</L2Cache>
<MainMemoryLatency>40</MainMemoryLatency>
</Configuration>

1
assignment-2/bin/generic/.cph/.Simulator.java_74fc5dae77a3b9a48197eb148ed1e37a.prob
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@ -1 +0,0 @@
{"name":"Local: Simulator","url":"c:\\Users\\karth\\OneDrive\\Desktop\\new\\src\\generic\\Simulator.java","tests":[{"id":1662603879409,"input":"","output":""},{"id":1662603899098,"input":"","output":""}],"interactive":false,"memoryLimit":1024,"timeLimit":3000,"srcPath":"c:\\Users\\karth\\OneDrive\\Desktop\\new\\src\\generic\\Simulator.java","group":"local","local":true}

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assignment-2/build.xml
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@ -1,44 +0,0 @@
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!-- WARNING: Eclipse auto-generated file.
Any modifications will be overwritten.
To include a user specific buildfile here, simply create one in the same
directory with the processing instruction <?eclipse.ant.import?>
as the first entry and export the buildfile again. --><project basedir="." default="build" name="CustomISAAssembler">
<property environment="env"/>
<property name="debuglevel" value="source,lines,vars"/>
<property name="target" value="1.8"/>
<property name="source" value="1.8"/>
<path id="CustomISAAssembler.classpath">
<pathelement location="bin"/>
</path>
<target name="init">
<mkdir dir="bin"/>
<copy includeemptydirs="false" todir="bin">
<fileset dir="src">
<exclude name="**/*.launch"/>
<exclude name="**/*.java"/>
</fileset>
</copy>
</target>
<target name="clean">
<delete dir="bin"/>
</target>
<target depends="clean" name="cleanall"/>
<target depends="build-subprojects,build-project" name="build"/>
<target name="build-subprojects"/>
<target depends="init" name="build-project">
<echo message="${ant.project.name}: ${ant.file}"/>
<javac debug="true" debuglevel="${debuglevel}" destdir="bin" includeantruntime="false" source="${source}" target="${target}">
<src path="src"/>
<classpath refid="CustomISAAssembler.classpath"/>
</javac>
</target>
<target name="make-jar" depends="build">
<mkdir dir="jars"/>
<jar destfile="jars/assembler.jar" basedir="bin">
<manifest>
<attribute name="Main-Class" value="main.Main"/>
</manifest>
</jar>
</target>
</project>

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.data
a:
10
b:
20
.text
main:
load %x0, $a, %x4
end

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.data
a:
10
b:
20
.text
main:
load %x0, $a, %x4
end

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assignment-2/supporting_files/src/generic/Simulator.java
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@ -1,68 +1,89 @@
package generic;
import java.io.FileInputStream;
import generic.Operand.OperandType;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Scanner;
import java.io.ByteArrayInputStream;
import java.io.BufferedOutputStream;
import java.nio.ByteBuffer;
import java.io.IOException;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;
import java.util.Stack;
public class Simulator {
static FileInputStream inputcodeStream = null;
public static Map<Instruction.OperationType, String> mapping = new HashMap<Instruction.OperationType, String>();
static {
mapping.put(Instruction.OperationType.add, "00000");
mapping.put(Instruction.OperationType.addi, "00001");
mapping.put(Instruction.OperationType.sub, "00010");
mapping.put(Instruction.OperationType.subi, "00011");
mapping.put(Instruction.OperationType.mul, "00100");
mapping.put(Instruction.OperationType.muli, "00101");
mapping.put(Instruction.OperationType.div, "00110");
mapping.put(Instruction.OperationType.divi, "00111");
mapping.put(Instruction.OperationType.and, "01000");
mapping.put(Instruction.OperationType.andi, "01001");
mapping.put(Instruction.OperationType.or, "01010");
mapping.put(Instruction.OperationType.ori, "01011");
mapping.put(Instruction.OperationType.xor, "01100");
mapping.put(Instruction.OperationType.xori, "01101");
mapping.put(Instruction.OperationType.slt, "01110");
mapping.put(Instruction.OperationType.slti, "01111");
mapping.put(Instruction.OperationType.sll, "10000");
mapping.put(Instruction.OperationType.slli, "10001");
mapping.put(Instruction.OperationType.srl, "10010");
mapping.put(Instruction.OperationType.srli, "10011");
mapping.put(Instruction.OperationType.sra, "10100");
mapping.put(Instruction.OperationType.srai, "10101");
mapping.put(Instruction.OperationType.load, "10110");
mapping.put(Instruction.OperationType.end, "11101");
mapping.put(Instruction.OperationType.beq, "11001");
mapping.put(Instruction.OperationType.jmp, "11000");
mapping.put(Instruction.OperationType.bne, "11010");
mapping.put(Instruction.OperationType.blt, "11011");
mapping.put(Instruction.OperationType.bgt, "11100");
}
public static Map<String, String> map = new HashMap<>() {
{
put("add", "00000");
put("sub", "00010");
put("mul", "00100");
put("div", "00110");
put("and", "01000");
put("or", "01010");
put("xor", "01100");
put("slt", "01110");
put("sll", "10000");
put("srl", "10010");
put("sra", "10100");
put("beq", "11001");
put("bne", "11010");
put("blt", "11011");
put("bgt", "11100");
put("load", "10110");
put("store", "10111");
put("jmp", "11000");
put("addi", "00001");
put("subi", "00011");
put("muli", "00101");
put("divi", "00111");
put("andi", "01001");
put("ori", "01011");
put("xori", "01101");
put("slti", "01111");
put("slli", "10001");
put("srli", "10011");
put("srai", "10101");
put("end", "11101");
}
};
public static void setupSimulation(String assemblyProgramFile) {
int firstCodeAddress = ParsedProgram.parseDataSection(assemblyProgramFile);
ParsedProgram.parseCodeSection(assemblyProgramFile, firstCodeAddress);
ParsedProgram.printState();
}
private static String toBinaryOfSpecificPrecision(int num, int lenOfTargetString) {
String binary = String.format("%" + lenOfTargetString + "s", Integer.toBinaryString(num)).replace(' ', '0');
return binary;
}
private static String convert_1(Operand inst, int precision) {
return toBinaryOfSpecificPrecision(inst.getValue(), precision);
private static int toSignedInteger(String binary) {
int n = 32 - binary.length();
char[] sign_ext = new char[n];
Arrays.fill(sign_ext, binary.charAt(0));
int signedInteger = (int) Long.parseLong(new String(sign_ext) + binary, 2);
return signedInteger;
}
private static String toBinaryString(int n) {
// Remove this conditional statement
// if (n >= 0) return String.valueOf(n);
Stack<Integer> bits = new Stack<>();
do {
bits.push(n % 2);
n /= 2;
} while (n != 0);
StringBuilder builder = new StringBuilder();
while (!bits.isEmpty()) {
builder.append(bits.pop());
}
return " " + builder.toString();
}
private static String convert(Operand inst, int precision) {
if (inst == null)
return toBinaryOfSpecificPrecision(0, precision);
@ -70,84 +91,106 @@ public class Simulator {
if (inst.getOperandType() == Operand.OperandType.Label)
return toBinaryOfSpecificPrecision(ParsedProgram.symtab.get(inst.getLabelValue()), precision);
// write logic for converting to binary/ hex
return toBinaryOfSpecificPrecision(inst.getValue(), precision);
// check if inst is a label, in that case, use its value
// return String.valueOf(inst.getValue());
}
public static void setupSimulation(String assemblyProgramFile)
{
int firstCodeAddress = ParsedProgram.parseDataSection(assemblyProgramFile);
ParsedProgram.parseCodeSection(assemblyProgramFile, firstCodeAddress);
ParsedProgram.printState();
}
public static void assemble(String objectProgramFile)
{
public static void assemble(String objectProgramFile) {
FileOutputStream file;
try {
//1. open the objectProgramFile in binary mode
file = new FileOutputStream(objectProgramFile);
//write the firstCodeAddress to the file
file.write(ByteBuffer.allocate(4).putInt(ParsedProgram.firstCodeAddress).array());
//write the data to the file
for (var value : ParsedProgram.data) {
BufferedOutputStream bfile = new BufferedOutputStream(file);
//2. write the firstCodeAddress to the file
byte[] addressCode = ByteBuffer.allocate(4).putInt(ParsedProgram.firstCodeAddress).array();
bfile.write(addressCode);
//3. write the data to the file
for (int value: ParsedProgram.data) {
byte[] dataValue = ByteBuffer.allocate(4).putInt(value).array();
file.write(dataValue);
bfile.write(dataValue);
}
//assemble one instruction at a time, and write to the file
for (var instruction : ParsedProgram.code) {
String line = "";
String optype=(instruction.operationType).toString();
line += map.get(optype);
// int op = Integer.parseInt(line, 2);
int op=Integer.parseInt(map.get(optype),2);
int pc = instruction.getProgramCounter();
//4. assemble one instruction at a time, and write to the file
for (Instruction inst: ParsedProgram.code) {
/**
* inst.getSourceOperand().getValue() will be passed to a function as f()
* that will change decimal to binary and then will return the string
* form of the binary. It will also check if the value is a label,
* in case it is a label, it would call ParsedProgram.symtab.get()
* to get the address corresponding to the label
*/
String binaryRep = "";
// print operation type, use toBinaryString() instead of convert()
// file.write(mapping.get(inst.getOperationType()));
binaryRep += mapping.get(inst.getOperationType());
int opCode = Integer.parseInt(binaryRep, 2);
// System.out.println(inst.getOperationType() + " " + mapping.get(inst.getOperationType()));
// System.out.println(mapping);
// System.out.println(inst.getProgramCounter());
int pc = inst.getProgramCounter();
if (op <= 20 && op % 2 == 0) {
if (opCode <= 20 && opCode % 2 == 0) {
// R3 Type
line += convert_1(instruction.getSourceOperand1(), 5);
line += convert_1(instruction.getSourceOperand2(), 5);
line += convert_1(instruction.getDestinationOperand(), 5);
line += toBinaryOfSpecificPrecision(0, 12);
binaryRep += convert(inst.getSourceOperand1(), 5);
binaryRep += convert(inst.getSourceOperand2(), 5);
binaryRep += convert(inst.getDestinationOperand(), 5);
binaryRep += toBinaryOfSpecificPrecision(0, 12);
}
else if (op == 29) {
line += toBinaryOfSpecificPrecision(0, 27);
}
else if (op == 24) {
else if (opCode == 24) {
// RI Type
if (instruction.destinationOperand.getOperandType() == Operand.OperandType.Register) {
line += convert(instruction.getDestinationOperand(), 5);
line += toBinaryOfSpecificPrecision(0, 22);
} else {
line += toBinaryOfSpecificPrecision(0, 5);
int value = Integer.parseInt(convert(instruction.getDestinationOperand(), 5), 2) - pc;
String bin = toBinaryOfSpecificPrecision(value, 22);
line += bin.substring(bin.length() - 22);
if (inst.destinationOperand.getOperandType() == Operand.OperandType.Register) {
binaryRep += convert(inst.getDestinationOperand(), 5);
binaryRep += toBinaryOfSpecificPrecision(0, 22);
}
else {
binaryRep += toBinaryOfSpecificPrecision(0, 5);
int value = Integer.parseInt(convert(inst.getDestinationOperand(), 5), 2) - pc;
String bin = toBinaryOfSpecificPrecision(value, 22);
binaryRep += bin.substring(bin.length() - 22);
}
}
else if (opCode == 29) {
binaryRep += toBinaryOfSpecificPrecision(0, 27);
}
else {
// R2I Type
if (op >= 25 && op <= 28) {
int value = Integer.parseInt(convert(instruction.getDestinationOperand(), 5), 2) - pc;
line += convert(instruction.getSourceOperand1(), 5);
line += convert(instruction.getSourceOperand2(), 5);
if (opCode >= 25 && opCode <= 28) {
int value = Integer.parseInt(convert(inst.getDestinationOperand(), 5), 2) - pc;
binaryRep += convert(inst.getSourceOperand1(), 5);
binaryRep += convert(inst.getSourceOperand2(), 5);
String bin = toBinaryOfSpecificPrecision(value, 17);
line += bin.substring(bin.length() - 17);
} else {
line += convert(instruction.getSourceOperand1(), 5);
line += convert(instruction.getDestinationOperand(), 5);
line += convert(instruction.getSourceOperand2(), 17);
binaryRep += bin.substring(bin.length() - 17);
}
else {
binaryRep += convert(inst.getSourceOperand1(), 5);
binaryRep += convert(inst.getDestinationOperand(), 5);
binaryRep += convert(inst.getSourceOperand2(), 17);
}
}
int instInteger = (int) Long.parseLong(line, 2);
int instInteger = (int) Long.parseLong(binaryRep, 2);
byte[] instBinary = ByteBuffer.allocate(4).putInt(instInteger).array();
file.write(instBinary);
bfile.write(instBinary);
// System.out.println(instInteger);
// if (inst.getSourceOperand1() != null)
// file.write(convert(inst.getSourceOperand1()));
// if (inst.getSourceOperand2() != null)
// file.write(convert(inst.getSourceOperand2()));
// if (inst.getDestinationOperand() != null)
// file.write(convert(inst.getDestinationOperand()));
// file.write(inst.toString());
}
file.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
//5. close the file
bfile.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}

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assignment-3/bin/configuration/config.xml
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<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
<Configuration>
<FunctionalUnits>
<ALU>
<Count>2</Count>
<Latency>1</Latency>
<ReciprocalOfThroughput>1</ReciprocalOfThroughput>
</ALU>
<Multiplier>
<Count>1</Count>
<Latency>4</Latency>
<ReciprocalOfThroughput>1</ReciprocalOfThroughput>
</Multiplier>
<Divider>
<Count>1</Count>
<Latency>10</Latency>
<ReciprocalOfThroughput>1</ReciprocalOfThroughput>
</Divider>
</FunctionalUnits>
<L1iCache>
<NumberOfLines>256</NumberOfLines>
<Latency>2</Latency>
<Associativity>4</Associativity>
<ReplacementPolicy>LRU</ReplacementPolicy>
</L1iCache>
<L1dCache>
<NumberOfLines>256</NumberOfLines>
<Latency>2</Latency>
<Associativity>4</Associativity>
<ReplacementPolicy>LRU</ReplacementPolicy>
</L1dCache>
<L2Cache>
<NumberOfLines>2048</NumberOfLines>
<Latency>10</Latency>
<Associativity>4</Associativity>
<ReplacementPolicy>LRU</ReplacementPolicy>
</L2Cache>
<MainMemoryLatency>40</MainMemoryLatency>
</Configuration>

39
assignment-3/build.xml
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@ -1,39 +0,0 @@
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!-- WARNING: Eclipse auto-generated file.
Any modifications will be overwritten.
To include a user specific buildfile here, simply create one in the same
directory with the processing instruction <?eclipse.ant.import?>
as the first entry and export the buildfile again. --><project basedir="." default="build">
<property environment="env"/>
<property name="debuglevel" value="source,lines,vars"/>
<property name="target" value="1.8"/>
<property name="source" value="1.8"/>
<target name="init">
<mkdir dir="bin"/>
<copy includeemptydirs="false" todir="bin">
<fileset dir="src">
<exclude name="**/*.launch"/>
<exclude name="**/*.java"/>
</fileset>
</copy>
</target>
<target name="clean">
<delete dir="bin"/>
</target>
<target depends="clean" name="cleanall"/>
<target depends="build-subprojects,build-project" name="build"/>
<target name="build-subprojects"/>
<target depends="init" name="build-project">
<javac debug="true" debuglevel="${debuglevel}" destdir="bin" includeantruntime="false" source="${source}" target="${target}">
<src path="src"/>
</javac>
</target>
<target name="make-jar" depends="build">
<mkdir dir="jars"/>
<jar destfile="jars/simulator.jar" basedir="bin">
<manifest>
<attribute name="Main-Class" value="main.Main"/>
</manifest>
</jar>
</target>
</project>

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assignment-3/src/hello.txt
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Number of instructions executed = 277
Number of cycles taken = 277

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assignment-4/bin/build.xml
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@ -1,39 +0,0 @@
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!-- WARNING: Eclipse auto-generated file.
Any modifications will be overwritten.
To include a user specific buildfile here, simply create one in the same
directory with the processing instruction <?eclipse.ant.import?>
as the first entry and export the buildfile again. --><project basedir="." default="build">
<property environment="env"/>
<property name="debuglevel" value="source,lines,vars"/>
<property name="target" value="1.8"/>
<property name="source" value="1.8"/>
<target name="init">
<mkdir dir="bin"/>
<copy includeemptydirs="false" todir="bin">
<fileset dir="src">
<exclude name="**/*.launch"/>
<exclude name="**/*.java"/>
</fileset>
</copy>
</target>
<target name="clean">
<delete dir="bin"/>
</target>
<target depends="clean" name="cleanall"/>
<target depends="build-subprojects,build-project" name="build"/>
<target name="build-subprojects"/>
<target depends="init" name="build-project">
<javac debug="true" debuglevel="${debuglevel}" destdir="bin" includeantruntime="false" source="${source}" target="${target}">
<src path="src"/>
</javac>
</target>
<target name="make-jar" depends="build">
<mkdir dir="jars"/>
<jar destfile="jars/simulator.jar" basedir="bin">
<manifest>
<attribute name="Main-Class" value="main.Main"/>
</manifest>
</jar>
</target>
</project>

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assignment-4/bin/configuration/config.xml
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@ -1,43 +0,0 @@
<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
<Configuration>
<FunctionalUnits>
<ALU>
<Count>2</Count>
<Latency>1</Latency>
<ReciprocalOfThroughput>1</ReciprocalOfThroughput>
</ALU>
<Multiplier>
<Count>1</Count>
<Latency>4</Latency>
<ReciprocalOfThroughput>1</ReciprocalOfThroughput>
</Multiplier>
<Divider>
<Count>1</Count>
<Latency>10</Latency>
<ReciprocalOfThroughput>1</ReciprocalOfThroughput>
</Divider>
</FunctionalUnits>
<L1iCache>
<NumberOfLines>256</NumberOfLines>
<Latency>2</Latency>
<Associativity>4</Associativity>
<ReplacementPolicy>LRU</ReplacementPolicy>
</L1iCache>
<L1dCache>
<NumberOfLines>256</NumberOfLines>
<Latency>2</Latency>
<Associativity>4</Associativity>
<ReplacementPolicy>LRU</ReplacementPolicy>
</L1dCache>
<L2Cache>
<NumberOfLines>2048</NumberOfLines>
<Latency>10</Latency>
<Associativity>4</Associativity>
<ReplacementPolicy>LRU</ReplacementPolicy>
</L2Cache>
<MainMemoryLatency>40</MainMemoryLatency>
</Configuration>

4
assignment-4/bin/hello.txt
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@ -1,4 +0,0 @@
Number of instructions executed = 421
Number of cycles taken = 992
Number of data hazards = 441
Number of control hazards = 63

39
assignment-4/build.xml
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@ -1,39 +0,0 @@
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!-- WARNING: Eclipse auto-generated file.
Any modifications will be overwritten.
To include a user specific buildfile here, simply create one in the same
directory with the processing instruction <?eclipse.ant.import?>
as the first entry and export the buildfile again. --><project basedir="." default="build">
<property environment="env"/>
<property name="debuglevel" value="source,lines,vars"/>
<property name="target" value="1.8"/>
<property name="source" value="1.8"/>
<target name="init">
<mkdir dir="bin"/>
<copy includeemptydirs="false" todir="bin">
<fileset dir="src">
<exclude name="**/*.launch"/>
<exclude name="**/*.java"/>
</fileset>
</copy>
</target>
<target name="clean">
<delete dir="bin"/>
</target>
<target depends="clean" name="cleanall"/>
<target depends="build-subprojects,build-project" name="build"/>
<target name="build-subprojects"/>
<target depends="init" name="build-project">
<javac debug="true" debuglevel="${debuglevel}" destdir="bin" includeantruntime="false" source="${source}" target="${target}">
<src path="src"/>
</javac>
</target>
<target name="make-jar" depends="build">
<mkdir dir="jars"/>
<jar destfile="jars/simulator.jar" basedir="bin">
<manifest>
<attribute name="Main-Class" value="main.Main"/>
</manifest>
</jar>
</target>
</project>

116
assignment-4/src/configuration/Configuration.java
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@ -1,116 +0,0 @@
package configuration;
import java.io.File;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import generic.Misc;
public class Configuration {
public static int ALU_count;
public static int ALU_latency;
public static int ALU_reciprocal_of_throughput;
public static int multiplier_count;
public static int multiplier_latency;
public static int multiplier_reciprocal_of_throughput;
public static int divider_count;
public static int divider_latency;
public static int divider_reciprocal_of_throughput;
public static int L1i_numberOfLines;
public static int L1i_latency;
public static int L1i_associativity;
public static String L1i_replacementPolicy;
public static int L1d_numberOfLines;
public static int L1d_latency;
public static int L1d_associativity;
public static String L1d_replacementPolicy;
public static int L2_numberOfLines;
public static int L2_latency;
public static int L2_associativity;
public static String L2_replacementPolicy;
public static int mainMemoryLatency;
public static void parseConfiguratioFile(String configFileName)
{
Document doc = null;
try
{
File file = new File(configFileName);
DocumentBuilderFactory DBFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder DBuilder = DBFactory.newDocumentBuilder();
doc = DBuilder.parse(file);
doc.getDocumentElement().normalize();
}
catch(Exception e)
{
e.printStackTrace();
Misc.printErrorAndExit("Error in reading config file : " + e);
}
NodeList nodeLst = doc.getElementsByTagName("ALU");
Element elmnt = (Element) nodeLst.item(0);
ALU_count = Integer.parseInt(getImmediateString("Count", elmnt));
ALU_latency = Integer.parseInt(getImmediateString("Latency", elmnt));
ALU_reciprocal_of_throughput = Integer.parseInt(getImmediateString("ReciprocalOfThroughput", elmnt));
nodeLst = doc.getElementsByTagName("Multiplier");
elmnt = (Element) nodeLst.item(0);
multiplier_count = Integer.parseInt(getImmediateString("Count", elmnt));
multiplier_latency = Integer.parseInt(getImmediateString("Latency", elmnt));
multiplier_reciprocal_of_throughput = Integer.parseInt(getImmediateString("ReciprocalOfThroughput", elmnt));
nodeLst = doc.getElementsByTagName("Divider");
elmnt = (Element) nodeLst.item(0);
divider_count = Integer.parseInt(getImmediateString("Count", elmnt));
divider_latency = Integer.parseInt(getImmediateString("Latency", elmnt));
divider_reciprocal_of_throughput = Integer.parseInt(getImmediateString("ReciprocalOfThroughput", elmnt));
nodeLst = doc.getElementsByTagName("L1iCache");
elmnt = (Element) nodeLst.item(0);
L1i_numberOfLines = Integer.parseInt(getImmediateString("NumberOfLines", elmnt));
L1i_latency = Integer.parseInt(getImmediateString("Latency", elmnt));
L1i_associativity = Integer.parseInt(getImmediateString("Associativity", elmnt));
L1i_replacementPolicy = getImmediateString("ReplacementPolicy", elmnt);
nodeLst = doc.getElementsByTagName("L1dCache");
elmnt = (Element) nodeLst.item(0);
L1d_numberOfLines = Integer.parseInt(getImmediateString("NumberOfLines", elmnt));
L1d_latency = Integer.parseInt(getImmediateString("Latency", elmnt));
L1d_associativity = Integer.parseInt(getImmediateString("Associativity", elmnt));
L1d_replacementPolicy = getImmediateString("ReplacementPolicy", elmnt);
nodeLst = doc.getElementsByTagName("L2Cache");
elmnt = (Element) nodeLst.item(0);
L2_numberOfLines = Integer.parseInt(getImmediateString("NumberOfLines", elmnt));
L2_latency = Integer.parseInt(getImmediateString("Latency", elmnt));
L2_associativity = Integer.parseInt(getImmediateString("Associativity", elmnt));
L2_replacementPolicy = getImmediateString("ReplacementPolicy", elmnt);
nodeLst = doc.getElementsByTagName("Configuration");
elmnt = (Element) nodeLst.item(0);
mainMemoryLatency = Integer.parseInt(getImmediateString("MainMemoryLatency", elmnt));
}
private static String getImmediateString(String tagName, Element parent) // Get the immediate string value of a particular tag name under a particular parent tag
{
NodeList nodeLst = parent.getElementsByTagName(tagName);
if (nodeLst.item(0) == null)
{
Misc.printErrorAndExit("XML Configuration error : Item \"" + tagName + "\" not found inside the \"" + parent.getTagName() + "\" tag in the configuration file!!");
}
Element NodeElmnt = (Element) nodeLst.item(0);
NodeList resultNode = NodeElmnt.getChildNodes();
return ((Node) resultNode.item(0)).getNodeValue();
}
}

43
assignment-4/src/configuration/config.xml
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@ -1,43 +0,0 @@
<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
<Configuration>
<FunctionalUnits>
<ALU>
<Count>2</Count>
<Latency>1</Latency>
<ReciprocalOfThroughput>1</ReciprocalOfThroughput>
</ALU>
<Multiplier>
<Count>1</Count>
<Latency>4</Latency>
<ReciprocalOfThroughput>1</ReciprocalOfThroughput>
</Multiplier>
<Divider>
<Count>1</Count>
<Latency>10</Latency>
<ReciprocalOfThroughput>1</ReciprocalOfThroughput>
</Divider>
</FunctionalUnits>
<L1iCache>
<NumberOfLines>256</NumberOfLines>
<Latency>2</Latency>
<Associativity>4</Associativity>
<ReplacementPolicy>LRU</ReplacementPolicy>
</L1iCache>
<L1dCache>
<NumberOfLines>256</NumberOfLines>
<Latency>2</Latency>
<Associativity>4</Associativity>
<ReplacementPolicy>LRU</ReplacementPolicy>
</L1dCache>
<L2Cache>
<NumberOfLines>2048</NumberOfLines>
<Latency>10</Latency>
<Associativity>4</Associativity>
<ReplacementPolicy>LRU</ReplacementPolicy>
</L2Cache>
<MainMemoryLatency>40</MainMemoryLatency>
</Configuration>

96
assignment-4/src/generic/Instruction.java
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@ -1,96 +0,0 @@
package generic;
public class Instruction {
public enum OperationType {add, addi, sub, subi, mul, muli, div, divi, and, andi, or, ori, xor, xori, slt, slti, sll, slli, srl, srli, sra, srai, load, store, jmp, beq, bne, blt, bgt, end};
int programCounter;
OperationType operationType;
Operand sourceOperand1;
Operand sourceOperand2;
Operand destinationOperand;
public int getProgramCounter() {
return programCounter;
}
public void setProgramCounter(int programCounter) {
this.programCounter = programCounter;
}
public OperationType getOperationType() {
return operationType;
}
public void setOperationType(OperationType operationType) {
this.operationType = operationType;
}
public Operand getSourceOperand1() {
return sourceOperand1;
}
public void setSourceOperand1(Operand sourceOperand1) {
this.sourceOperand1 = sourceOperand1;
}
public Operand getSourceOperand2() {
return sourceOperand2;
}
public void setSourceOperand2(Operand sourceOperand2) {
this.sourceOperand2 = sourceOperand2;
}
public Operand getDestinationOperand() {
return destinationOperand;
}
public void setDestinationOperand(Operand destinationOperand) {
this.destinationOperand = destinationOperand;
}
public String toString()
{
if(sourceOperand1 != null)
{
if(sourceOperand2 != null)
{
if(destinationOperand != null)
{
return "PC="+ programCounter + "\t" + operationType + "\t" + sourceOperand1 + "\t" + sourceOperand2 + "\t" + destinationOperand + "\n";
}
else
{
return "PC="+ programCounter + "\t" + operationType + "\t" + sourceOperand1 + "\t" + sourceOperand2 + "\tnull" + "\n";
}
}
else
{
if(destinationOperand != null)
{
return "PC="+ programCounter + "\t" + operationType + "\t" + sourceOperand1 + "\tnull" + "\t" + destinationOperand + "\n";
}
else
{
return "PC="+ programCounter + "\t" + operationType + "\t" + sourceOperand1 + "\tnull" + "\tnull" + "\n";
}
}
}
else
{
if(sourceOperand2 != null)
{
if(destinationOperand != null)
{
return "PC="+ programCounter + "\t" + operationType + "\tnull" + "\t" + sourceOperand2 + "\t" + destinationOperand + "\n";
}
else
{
return "PC="+ programCounter + "\t" + operationType + "\tnull" + "\t" + sourceOperand2 + "\tnull" + "\n";
}
}
else
{
if(destinationOperand != null)
{
return "PC="+ programCounter + "\t" + operationType + "\tnull" + "\tnull" + "\t" + destinationOperand + "\n";
}
else
{
return "PC="+ programCounter + "\t" + operationType + "\tnull" + "\tnull" + "\tnull" + "\n";
}
}
}
}
}

10
assignment-4/src/generic/Misc.java
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@ -1,10 +0,0 @@
package generic;
public class Misc {
public static void printErrorAndExit(String message)
{
System.err.println(message);
System.exit(1);
}
}

41
assignment-4/src/generic/Operand.java
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@ -1,41 +0,0 @@
package generic;
public class Operand {
public enum OperandType {Register, Immediate, Label};
OperandType operandType;
int value;
String labelValue; //only applicable for Label type;
//Note that Label type is only applicable for functional emulation of assembly file
public OperandType getOperandType() {
return operandType;
}
public void setOperandType(OperandType operandType) {
this.operandType = operandType;
}
public int getValue() {
return value;
}
public void setValue(int value) {
this.value = value;
}
public String getLabelValue() {
return labelValue;
}
public void setLabelValue(String labelValue) {
this.labelValue = labelValue;
}
public String toString()
{
if(operandType == OperandType.Register || operandType == OperandType.Immediate)
{
return "[" + operandType.toString() + ":" + value + "]";
}
else
{
return "[" + operandType.toString() + ":" + labelValue + "]";
}
}
}

82
assignment-4/src/generic/Simulator.java
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@ -1,82 +0,0 @@
package generic;
import java.io.FileInputStream;
import java.io.InputStream;
import java.io.DataInputStream;
import processor.Clock;
import processor.Processor;
public class Simulator {
static Processor processor;
static boolean simulationComplete;
public static void setupSimulation(String assemblyProgramFile, Processor p)
{
Simulator.processor = p;
loadProgram(assemblyProgramFile);
simulationComplete = false;
}
static void loadProgram(String assemblyProgramFile)
{
/*
* 1. load the program into memory according to the program layout described
* in the ISA specification
* 2. set PC to the address of the first instruction in the main
* 3. set the following registers:
* x0 = 0
* x1 = 65535
* x2 = 65535
*/
try (
InputStream is = new FileInputStream(assemblyProgramFile);
){
DataInputStream d_is = new DataInputStream(is);
int address = -1;
while(d_is.available() > 0){
int next = d_is.readInt();
System.out.println(next);
if(address == -1){
processor.getRegisterFile().setProgramCounter(next);
}
else{
processor.getMainMemory().setWord(address, next);
}
address += 1;
}
processor.getRegisterFile().setValue(0, 0);
processor.getRegisterFile().setValue(1, 65535);
processor.getRegisterFile().setValue(2, 65535);
// Debug
System.out.println(processor.getRegisterFile().getProgramCounter());
System.out.println(processor.getMainMemory().getContentsAsString(0, 10));
} catch (Exception e) {
e.printStackTrace();
}
}
public static void simulate()
{
while(simulationComplete == false)
{
processor.getRWUnit().performRW();
processor.getMAUnit().performMA();
processor.getEXUnit().performEX();
processor.getOFUnit().performOF();
processor.getIFUnit().performIF();
Clock.incrementClock();
// Statistics.setNumberOfInstructions(Statistics.getNumberOfInstructions() + 1);
Statistics.setNumberOfCycles(Statistics.getNumberOfCycles() + 1);
}
}
public static void setSimulationComplete(boolean value)
{
simulationComplete = value;
}
}

68
assignment-4/src/generic/Statistics.java
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@ -1,68 +0,0 @@
package generic;
import java.io.PrintWriter;
public class Statistics {
// TODO add your statistics here
static int numberOfInstructions;
static int numberOfCycles;
static int datahazards;
static int controlhazards;
public static void printStatistics(String statFile)
{
try
{
PrintWriter writer = new PrintWriter(statFile);
writer.println("Number of instructions executed = " + numberOfInstructions);
writer.println("Number of cycles taken = " + numberOfCycles);
writer.println("Number of data hazards = " + datahazards);
writer.println("Number of control hazards = " + controlhazards);
// TODO add code here to print statistics in the output file
writer.close();
}
catch(Exception e)
{
Misc.printErrorAndExit(e.getMessage());
}
}
// TODO write functions to update statistics
public static int getNumberOfInstructions()
{
return numberOfInstructions;
}
public static int getNumberOfCycles()
{
return numberOfCycles;
}
public static void setNumberOfInstructions(int numberOfInstructions)
{
Statistics.numberOfInstructions = numberOfInstructions;
}
public static void setNumberOfCycles(int numberOfCycles) {
Statistics.numberOfCycles = numberOfCycles;
}
public static int getDatahazards() {
return datahazards;
}
public static void setDatahazards(int datahazards) {
Statistics.datahazards = datahazards;
}
public static int getControlhazards() {
return controlhazards;
}
public static void setControlhazards(int controlhazards) {
Statistics.controlhazards = controlhazards;
}
}

4
assignment-4/src/hello.txt
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@ -1,4 +0,0 @@
Number of instructions executed = 6
Number of cycles taken = 16
Number of data hazards = 6
Number of control hazards = 0

50
assignment-4/src/main/Main.java
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@ -1,50 +0,0 @@
package main;
import java.util.ArrayList;
import configuration.Configuration;
import generic.Misc;
import generic.Statistics;
import processor.Processor;
import processor.memorysystem.MainMemory;
import processor.pipeline.RegisterFile;
import generic.Simulator;
public class Main {
public static void main(String[] args) {
if(args.length != 3)
{
Misc.printErrorAndExit("usage: java -jar <path-to-jar-file> <path-to-config-file> <path-to-stat-file> <path-to-object-file>\n");
}
Configuration.parseConfiguratioFile(args[0]);
Processor processor = new Processor();
Simulator.setupSimulation(args[2], processor);
Simulator.simulate();
processor.printState(0, 30); // ((0, 0) refers to the range of main memory addresses we wish to print. this is an empty set.
Statistics.printStatistics(args[1]);
System.out.println("Hash of the Processor State = "+getHashCode(processor.getRegisterFile(), processor.getMainMemory()));
}
static int getHashCode(RegisterFile registerState, MainMemory memoryState) {
ArrayList<Integer> hash = new ArrayList<Integer>();
hash.add(registerState.getProgramCounter());
for(int i=0;i<32;i++) {
hash.add(registerState.getValue(i));
}
for(int i=0;i<65536;i++) {
hash.add(memoryState.getWord(i));
}
return hash.hashCode();
}
}

15
assignment-4/src/processor/Clock.java
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@ -1,15 +0,0 @@
package processor;
public class Clock {
static long currentTime = 0;
public static void incrementClock()
{
currentTime++;
}
public static long getCurrentTime()
{
return currentTime;
}
}

97
assignment-4/src/processor/Processor.java
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@ -1,97 +0,0 @@
package processor;
import processor.memorysystem.MainMemory;
import processor.pipeline.EX_IF_LatchType;
import processor.pipeline.EX_MA_LatchType;
import processor.pipeline.Execute;
import processor.pipeline.IF_EnableLatchType;
import processor.pipeline.IF_OF_LatchType;
import processor.pipeline.InstructionFetch;
import processor.pipeline.MA_RW_LatchType;
import processor.pipeline.MemoryAccess;
import processor.pipeline.OF_EX_LatchType;
import processor.pipeline.OperandFetch;
import processor.pipeline.RegisterFile;
import processor.pipeline.RegisterWrite;
public class Processor {
RegisterFile registerFile;
MainMemory mainMemory;
IF_EnableLatchType IF_EnableLatch;
IF_OF_LatchType IF_OF_Latch;
OF_EX_LatchType OF_EX_Latch;
EX_MA_LatchType EX_MA_Latch;
EX_IF_LatchType EX_IF_Latch;
MA_RW_LatchType MA_RW_Latch;
InstructionFetch IFUnit;
OperandFetch OFUnit;
Execute EXUnit;
MemoryAccess MAUnit;
RegisterWrite RWUnit;
public Processor()
{
registerFile = new RegisterFile();
mainMemory = new MainMemory();
IF_EnableLatch = new IF_EnableLatchType();
IF_OF_Latch = new IF_OF_LatchType();
OF_EX_Latch = new OF_EX_LatchType();
EX_MA_Latch = new EX_MA_LatchType();
EX_IF_Latch = new EX_IF_LatchType();
MA_RW_Latch = new MA_RW_LatchType();
IFUnit = new InstructionFetch(this, IF_EnableLatch, IF_OF_Latch, EX_IF_Latch);
OFUnit = new OperandFetch(this, IF_OF_Latch, OF_EX_Latch, IF_EnableLatch);
EXUnit = new Execute(this, OF_EX_Latch, EX_MA_Latch, EX_IF_Latch);
MAUnit = new MemoryAccess(this, EX_MA_Latch, MA_RW_Latch);
RWUnit = new RegisterWrite(this, MA_RW_Latch, IF_EnableLatch);
}
public void printState(int memoryStartingAddress, int memoryEndingAddress)
{
System.out.println(registerFile.getContentsAsString());
System.out.println(mainMemory.getContentsAsString(memoryStartingAddress, memoryEndingAddress));
}
public RegisterFile getRegisterFile() {
return registerFile;
}
public void setRegisterFile(RegisterFile registerFile) {
this.registerFile = registerFile;
}
public MainMemory getMainMemory() {
return mainMemory;
}
public void setMainMemory(MainMemory mainMemory) {
this.mainMemory = mainMemory;
}
public InstructionFetch getIFUnit() {
return IFUnit;
}
public OperandFetch getOFUnit() {
return OFUnit;
}
public Execute getEXUnit() {
return EXUnit;
}
public MemoryAccess getMAUnit() {
return MAUnit;
}
public RegisterWrite getRWUnit() {
return RWUnit;
}
}

35
assignment-4/src/processor/memorysystem/MainMemory.java
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@ -1,35 +0,0 @@
package processor.memorysystem;
public class MainMemory {
int[] memory;
public MainMemory()
{
memory = new int[65536];
}
public int getWord(int address)
{
return memory[address];
}
public void setWord(int address, int value)
{
memory[address] = value;
}
public String getContentsAsString(int startingAddress, int endingAddress)
{
if(startingAddress == endingAddress)
return "";
StringBuilder sb = new StringBuilder();
sb.append("\nMain Memory Contents:\n\n");
for(int i = startingAddress; i <= endingAddress; i++)
{
sb.append(i + "\t\t: " + memory[i] + "\n");
}
sb.append("\n");
return sb.toString();
}
}

27
assignment-4/src/processor/pipeline/EX_IF_LatchType.java
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@ -1,27 +0,0 @@
package processor.pipeline;
public class EX_IF_LatchType {
int pc;
boolean IF_enable;
public EX_IF_LatchType()
{
IF_enable = false;
}
public boolean isIF_enable() {
return IF_enable;
}
public void setIF_enable(boolean iF_enable) {
IF_enable = iF_enable;
}
public int getPC() {
return pc;
}
public void setPC(int pc) {
this.pc = pc;
}
}

50
assignment-4/src/processor/pipeline/EX_MA_LatchType.java
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@ -1,50 +0,0 @@
package processor.pipeline;
import generic.Instruction;
import generic.Operand;
public class EX_MA_LatchType {
boolean MA_enable;
Operand op2;
Instruction instruction;
int aluResult;
public EX_MA_LatchType()
{
MA_enable = false;
}
public void setInstruction(Instruction instruction) {
this.instruction = instruction;
}
public Instruction getInstruction() {
return instruction;
}
public void setOp2(Operand op2) {
this.op2 = op2;
}
public Operand getOp2(){
return op2;
}
public void setALUResult(int aluResult) {
this.aluResult = aluResult;
}
public int getALUResult(){
return aluResult;
}
public boolean isMA_enable() {
return MA_enable;
}
public void setMA_enable(boolean mA_enable) {
MA_enable = mA_enable;
}
}

184
assignment-4/src/processor/pipeline/Execute.java
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@ -1,184 +0,0 @@
package processor.pipeline;
import processor.Processor;
import generic.Instruction;
import generic.Statistics;
import generic.Instruction.OperationType;
import generic.Operand.OperandType;
public class Execute {
Processor containingProcessor;
OF_EX_LatchType OF_EX_Latch;
EX_MA_LatchType EX_MA_Latch;
EX_IF_LatchType EX_IF_Latch;
public Execute(Processor containingProcessor, OF_EX_LatchType oF_EX_Latch, EX_MA_LatchType eX_MA_Latch, EX_IF_LatchType eX_IF_Latch)
{
this.containingProcessor = containingProcessor;
this.OF_EX_Latch = oF_EX_Latch;
this.EX_MA_Latch = eX_MA_Latch;
this.EX_IF_Latch = eX_IF_Latch;
}
public void performEX()
{
// storing x31 here itself to not to complicate.
// TODO:remove this later in pipeline
if(OF_EX_Latch.isEX_enable())
{
int op1 = OF_EX_Latch.getOp1();
int op2 = OF_EX_Latch.getOp2();
int imm = OF_EX_Latch.getImm();
System.out.println("op1: "+op1+" op2: "+op2+" imm: "+imm);
Instruction instruction = OF_EX_Latch.getInstruction();
int cur_pc = containingProcessor.getRegisterFile().getProgramCounter();
int alu_result = 0;
System.out.println("EX: " + instruction);
OperationType alu_op = OF_EX_Latch.getInstruction().getOperationType();
System.out.println("ALU OP: " + alu_op);
boolean noma = false;
Statistics.setNumberOfInstructions(Statistics.getNumberOfInstructions() + 1);
switch(alu_op)
{
case add: alu_result = op1 + op2; break;
case addi: alu_result = op1 + imm; break;
case sub: alu_result = op1 - op2; break;
case subi: alu_result = op1 - imm; break;
case mul: alu_result = op1 * op2; break;
case muli: alu_result = op1 * imm; break;
case div:
alu_result = op1 / op2;
containingProcessor.getRegisterFile().setValue(31, op1 % op2);
break;
case divi:
alu_result = op1 / imm;
containingProcessor.getRegisterFile().setValue(31, op1 % imm);
break;
case and: alu_result = op1 & op2; break;
case andi: alu_result = op1 & imm; break;
case or: alu_result = op1 | op2; break;
case ori: alu_result = op1 | imm; break;
case xor: alu_result = op1 ^ op2; break;
case xori: alu_result = op1 ^ imm; break;
case slt: alu_result= (op1 < op2) ? 1 : 0; break;
case slti: alu_result= (op1 < imm) ? 1 : 0; break;
case sll:
containingProcessor.getRegisterFile().setValue(31, (int) Math.pow(2, op2));
alu_result = op1 << op2;
break;
case slli:
containingProcessor.getRegisterFile().setValue(31, (int) Math.pow(2, imm));
alu_result = op1 << imm;
break;
case srl:
containingProcessor.getRegisterFile().setValue(31, op1 & (1 << (op2 - 1)));
alu_result = op1 >>> op2;
break;
case srli:
containingProcessor.getRegisterFile().setValue(31, op1 & (1 << (imm - 1)));
alu_result = op1 >>> imm;
break;
case sra:
containingProcessor.getRegisterFile().setValue(31, op1 & (1 << (op2 - 1)));
alu_result = op1 >> op2;
break;
case srai:
containingProcessor.getRegisterFile().setValue(31, op1 & (1 << (imm - 1)));
alu_result = op1 >> imm;
break;
case load: alu_result = op1 + imm; break;
case store: alu_result = op2 + imm; break;
case jmp:
{
OperandType optype = instruction.getSourceOperand1().getOperandType();
if (optype == OperandType.Register){
imm = containingProcessor.getRegisterFile().getValue(
instruction.getSourceOperand1().getValue());
}
else{
imm = OF_EX_Latch.getImm();
}
alu_result = cur_pc + imm ;
EX_IF_Latch.setIF_enable(true);
EX_IF_Latch.setPC(alu_result-1);
noma = true;
containingProcessor.getOFUnit().setProceed(false);
}
break;
case beq:
{
if(op1 == op2)
{
EX_IF_Latch.setIF_enable(true);
alu_result = cur_pc + imm;
EX_IF_Latch.setPC(alu_result-1);
noma = true;
containingProcessor.getOFUnit().setProceed(false);
}
}
break;
case bne:
{
if(op1 != op2)
{
alu_result = cur_pc + imm;
EX_IF_Latch.setIF_enable(true);
EX_IF_Latch.setPC(alu_result-1);
noma = true;
containingProcessor.getOFUnit().setProceed(false);
}
}
break;
case blt:
{
if(op1 < op2)
{
alu_result = cur_pc + imm;
EX_IF_Latch.setIF_enable(true);
EX_IF_Latch.setPC(alu_result-1);
noma = true;
containingProcessor.getOFUnit().setProceed(false);
// System.out.println("hello world");
}
// System.out.println("hello world2");
}
break;
case bgt:
{
if(op1 > op2)
{
alu_result = cur_pc + imm;
EX_IF_Latch.setIF_enable(true);
EX_IF_Latch.setPC(alu_result-1);
noma = true;
containingProcessor.getOFUnit().setProceed(false);
}
}
break;
case end:
{
containingProcessor.getRegisterFile().setProgramCounter(containingProcessor.getRegisterFile().getProgramCounter()-1);
containingProcessor.getOFUnit().setisEnd(true);
break;
}
default:
break;
}
System.out.println("ALU RESULT: " + alu_result+"\n\n");
EX_MA_Latch.setALUResult(alu_result);
EX_MA_Latch.setInstruction(OF_EX_Latch.getInstruction());
if(!noma)
{
EX_MA_Latch.setMA_enable(true);
}else{
Statistics.setControlhazards(Statistics.getControlhazards()+2); // stall 2 cycles
}
}
}
}

30
assignment-4/src/processor/pipeline/IF_EnableLatchType.java
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@ -1,30 +0,0 @@
package processor.pipeline;
public class IF_EnableLatchType {
boolean IF_enable;
boolean freeze;
public IF_EnableLatchType()
{
IF_enable = true;
freeze = false;
}
public boolean isIF_enable() {
return IF_enable;
}
public void setIF_enable(boolean iF_enable) {
IF_enable = iF_enable;
}
public boolean isFreeze() {
return freeze;
}
public void setFreeze(boolean freeze) {
this.freeze = freeze;
}
}

29
assignment-4/src/processor/pipeline/IF_OF_LatchType.java
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@ -1,29 +0,0 @@
package processor.pipeline;
public class IF_OF_LatchType {
boolean OF_enable;
int instruction;
public IF_OF_LatchType()
{
OF_enable = false;
}
public boolean isOF_enable() {
return OF_enable;
}
public void setOF_enable(boolean oF_enable) {
OF_enable = oF_enable;
}
public int getInstruction() {
return instruction;
}
public void setInstruction(int instruction) {
this.instruction = instruction;
}
}

44
assignment-4/src/processor/pipeline/InstructionFetch.java
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@ -1,44 +0,0 @@
package processor.pipeline;
import processor.Processor;
public class InstructionFetch {
Processor containingProcessor;
IF_EnableLatchType IF_EnableLatch;
IF_OF_LatchType IF_OF_Latch;
EX_IF_LatchType EX_IF_Latch;
public InstructionFetch(Processor containingProcessor, IF_EnableLatchType iF_EnableLatch, IF_OF_LatchType iF_OF_Latch, EX_IF_LatchType eX_IF_Latch)
{
this.containingProcessor = containingProcessor;
this.IF_EnableLatch = iF_EnableLatch;
this.IF_OF_Latch = iF_OF_Latch;
this.EX_IF_Latch = eX_IF_Latch;
}
public void performIF()
{ if(!IF_EnableLatch.isFreeze()){
if(EX_IF_Latch.isIF_enable()){
containingProcessor.getRegisterFile().setProgramCounter(EX_IF_Latch.getPC()-1);
EX_IF_Latch.setIF_enable(false);
IF_OF_Latch.setOF_enable(false);
System.out.println("IF: PC set to " + EX_IF_Latch.getPC());
} // if EX_IF_Latch is enabled, set PC to EX_IF_Latch's PC and wait for next cycle (1 nop)
else if(IF_EnableLatch.isIF_enable() || EX_IF_Latch.isIF_enable())
{
int currentPC = containingProcessor.getRegisterFile().getProgramCounter();
int newInstruction = containingProcessor.getMainMemory().getWord(currentPC);
IF_OF_Latch.setInstruction(newInstruction);
containingProcessor.getRegisterFile().setProgramCounter(currentPC + 1);
IF_EnableLatch.setIF_enable(true);
IF_OF_Latch.setOF_enable(true);
}
}else{
IF_EnableLatch.setFreeze(false);
}
}
}

49
assignment-4/src/processor/pipeline/MA_RW_LatchType.java
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@ -1,49 +0,0 @@
package processor.pipeline;
import generic.Instruction;
public class MA_RW_LatchType {
boolean RW_enable;
int aluResult;
int load_result;
Instruction instruction;
public MA_RW_LatchType()
{
RW_enable = false;
}
public boolean isRW_enable() {
return RW_enable;
}
public void setRW_enable(boolean rW_enable) {
RW_enable = rW_enable;
}
public void setALU_result(int alu_result) {
this.aluResult = alu_result;
}
public int getALU_result() {
return aluResult;
}
public void setLoad_result(int load_result) {
this.load_result = load_result;
}
public int getLoad_result() {
return load_result;
}
public void setInstruction(Instruction instruction) {
this.instruction = instruction;
}
public Instruction getInstruction() {
return instruction;
}
}

44
assignment-4/src/processor/pipeline/MemoryAccess.java
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@ -1,44 +0,0 @@
package processor.pipeline;
import generic.Instruction;
import processor.Processor;
import generic.Instruction.OperationType;
public class MemoryAccess {
Processor containingProcessor;
EX_MA_LatchType EX_MA_Latch;
MA_RW_LatchType MA_RW_Latch;
public MemoryAccess(Processor containingProcessor, EX_MA_LatchType eX_MA_Latch, MA_RW_LatchType mA_RW_Latch)
{
this.containingProcessor = containingProcessor;
this.EX_MA_Latch = eX_MA_Latch;
this.MA_RW_Latch = mA_RW_Latch;
}
public void performMA()
{
if(EX_MA_Latch.isMA_enable())
{
Instruction instruction = EX_MA_Latch.getInstruction();
int alu_result = EX_MA_Latch.getALUResult();
MA_RW_Latch.setALU_result(alu_result);
OperationType op_type = instruction.getOperationType();
if (op_type==OperationType.store)
{
int val_store = containingProcessor.getRegisterFile().getValue(
instruction.getSourceOperand1().getValue());
containingProcessor.getMainMemory().setWord(alu_result, val_store);
}
else if (op_type==OperationType.load)
{
int load_result = containingProcessor.getMainMemory().getWord(alu_result);
MA_RW_Latch.setLoad_result(load_result);
}
MA_RW_Latch.setInstruction(instruction);
MA_RW_Latch.setRW_enable(true);
}
}
}

57
assignment-4/src/processor/pipeline/OF_EX_LatchType.java
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@ -1,57 +0,0 @@
package processor.pipeline;
import generic.Instruction;
public class OF_EX_LatchType {
boolean EX_enable;
Instruction instruction;
int op1, op2, imm;
public OF_EX_LatchType()
{
EX_enable = false;
}
public void setInstruction(Instruction instruction) {
this.instruction = instruction;
}
public Instruction getInstruction() {
return instruction;
}
public void setOp1(int op1) {
this.op1 = op1;
}
public int getOp1() {
return op1;
}
public void setOp2(int op2) {
this.op2 = op2;
}
public int getOp2() {
return op2;
}
public void setImm(int imm) {
this.imm = imm;
}
public int getImm() {
return imm;
}
public boolean isEX_enable() {
return EX_enable;
}
public void setEX_enable(boolean eX_enable) {
EX_enable = eX_enable;
}
}

217
assignment-4/src/processor/pipeline/OperandFetch.java
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@ -1,217 +0,0 @@
package processor.pipeline;
import java.util.Arrays;
import java.util.LinkedList;
import java.util.Queue;
import generic.Instruction;
import processor.Processor;
import generic.Instruction.OperationType;
import generic.Operand.OperandType;
import generic.Operand;
import generic.Statistics;
public class OperandFetch {
Processor containingProcessor;
IF_OF_LatchType IF_OF_Latch;
OF_EX_LatchType OF_EX_Latch;
IF_EnableLatchType IF_EnableLatch;
static OperationType[] opTypes = OperationType.values();
public boolean Proceed;
Queue<Integer> queue;
boolean isEnd;
public OperandFetch(Processor containingProcessor, IF_OF_LatchType iF_OF_Latch, OF_EX_LatchType oF_EX_Latch, IF_EnableLatchType iF_EnableLatch)
{
this.containingProcessor = containingProcessor;
this.IF_OF_Latch = iF_OF_Latch;
this.OF_EX_Latch = oF_EX_Latch;
this.IF_EnableLatch = iF_EnableLatch;
isEnd = false;
Proceed = true;
queue = new LinkedList<>();
queue.add(-1);
queue.add(-1);
queue.add(-1);
}
boolean checkdatahazard(int[] operands) {
for(int i=0;i<operands.length;i++) {
if(queue.contains(operands[i])) {
return true;
}
}
return false;
}
void updateQueue(int operand) {
queue.poll();
queue.add(operand);
}
public static int twoscompliment(String s) {
char[] chars = s.toCharArray();
for (int i = 0; i < chars.length; i++) {
if (chars[i] == '0') {
chars[i] = '1';
} else {
chars[i] = '0';
}
}
String s1 = new String(chars);
int num = Integer.parseInt(s1, 2);
num = num + 1;
return num;
}
public void performOF()
{
if(isEnd){
IF_EnableLatch.setIF_enable(false);
IF_OF_Latch.setOF_enable(false);
OF_EX_Latch.setEX_enable(false);
return;
}
int addtoqueue = -1;
boolean noDataHazard = true;
if(IF_OF_Latch.isOF_enable() && Proceed)
{
int instruction = IF_OF_Latch.getInstruction();
Instruction instr = new Instruction();
String bin_instr = Integer.toBinaryString(instruction);
if (bin_instr.length() < 32) {
int diff = 32 - bin_instr.length();
String zeros = "";
for (int i = 0; i < diff; i++) {
zeros += "0";
}
bin_instr = zeros + bin_instr;
}
instr.setProgramCounter(containingProcessor.getRegisterFile().getProgramCounter());
int opcode = Integer.parseInt(bin_instr.substring(0, 5), 2);
instr.setOperationType(opTypes[opcode]);
int R3_type_operators[] = {0,2,4,6,8,10,12,14,16,18,20};
int R2I_type_operators[] = {1,3,5,7,9,11,13,15,17,19,21,22,23,25,26,27,28};
int R1I_type_operators[] = {24,29};
// check if the instruction is of type R3
if (Arrays.stream(R3_type_operators).anyMatch(x -> x == opcode)) {
Operand rs1 = new Operand();
Operand rs2 = new Operand();
Operand rd = new Operand();
rs1.setOperandType(Operand.OperandType.Register);
rs2.setOperandType(Operand.OperandType.Register);
rd.setOperandType(Operand.OperandType.Register);
rs1.setValue(Integer.parseInt(bin_instr.substring(5, 10), 2));
rs2.setValue(Integer.parseInt(bin_instr.substring(10, 15), 2));
rd.setValue(Integer.parseInt(bin_instr.substring(15, 20), 2));
int op1 = containingProcessor.getRegisterFile().getValue(rs1.getValue());
int op2 = containingProcessor.getRegisterFile().getValue(rs2.getValue());
if (checkdatahazard(new int[] { rs1.getValue(), rs2.getValue() })) {
noDataHazard = false;
}else{
addtoqueue = rd.getValue();
OF_EX_Latch.setInstruction(instr);
OF_EX_Latch.setOp1(op1);
OF_EX_Latch.setOp2(op2);
instr.setDestinationOperand(rd);
instr.setSourceOperand1(rs1);
instr.setSourceOperand2(rs2);
}
}
else if (Arrays.stream(R2I_type_operators).anyMatch(x -> x == opcode)) {
Operand rs1 = new Operand();
Operand rd = new Operand();
rs1.setOperandType(Operand.OperandType.Register);
rd.setOperandType(Operand.OperandType.Register);
rs1.setValue(Integer.parseInt(bin_instr.substring(5, 10), 2));
rd.setValue(Integer.parseInt(bin_instr.substring(10, 15), 2));
// check 15th bit to see if it is negative
int imm = Integer.parseInt(bin_instr.substring(15, 32), 2);
if (bin_instr.charAt(15)=='1'){
imm = -1*twoscompliment(bin_instr.substring(15, 32));
System.out.println(bin_instr);
}
int op1 = containingProcessor.getRegisterFile().getValue(rs1.getValue());
int op2 = containingProcessor.getRegisterFile().getValue(rd.getValue());
// System.out.println("imm: " + imm);
if (checkdatahazard(new int[] { rs1.getValue(), rd.getValue()})){
noDataHazard = false;
}else{
if(opcode <= 22) { // > 21 means it is a branch instruction so no need to update queue
addtoqueue = rd.getValue();
}
OF_EX_Latch.setInstruction(instr);
OF_EX_Latch.setImm(imm);
OF_EX_Latch.setOp1(op1);
OF_EX_Latch.setOp2(op2);
instr.setDestinationOperand(rd);
instr.setSourceOperand1(rs1);
}
}
else if (Arrays.stream(R1I_type_operators).anyMatch(x -> x == opcode)) {
if(opcode != 24){ // end
Operand rd = new Operand();
rd.setOperandType(Operand.OperandType.Register);
rd.setValue(Integer.parseInt(bin_instr.substring(5, 10), 2));
instr.setDestinationOperand(rd);
OF_EX_Latch.setInstruction(instr);
}
else{ // opcode == 24 jmp
Operand op = new Operand();
String imm = bin_instr.substring(10, 32);
int imm_val = Integer.parseInt(imm, 2);
if (imm.charAt(0) == '1'){
imm_val = -1*twoscompliment(imm);
}
if (imm_val != 0){
op.setOperandType(OperandType.Immediate);
op.setValue(imm_val);
instr.setSourceOperand1(op);
}
else{
op.setOperandType(OperandType.Register);
op.setValue(Integer.parseInt(bin_instr.substring(5, 10), 2));
instr.setSourceOperand1(op);
}
if (checkdatahazard(new int[] { op.getValue() })) {
noDataHazard = false;
}else{
OF_EX_Latch.setInstruction(instr);
OF_EX_Latch.setImm(imm_val);
}
}
}
OF_EX_Latch.setEX_enable(noDataHazard);
if(!noDataHazard){
IF_EnableLatch.setFreeze(true);
System.out.println("\n\nData Hazard - Interlock\n\n");
Statistics.setDatahazards(Statistics.getDatahazards() + 1);
}
}
else if (!Proceed) {
// Proceed = true;
System.out.println("\n\nControl Hazard - Interlock\n\n");
}
updateQueue(addtoqueue);
}
public void setisEnd(boolean isEnd) {
this.isEnd = isEnd;
}
public void setProceed(boolean proceed) {
Proceed = proceed;
if (!Proceed) {
OF_EX_Latch.setEX_enable(false);
}
}
}

52
assignment-4/src/processor/pipeline/RegisterFile.java
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@ -1,52 +0,0 @@
package processor.pipeline;
public class RegisterFile {
int[] registerFile;
int programCounter;
public RegisterFile()
{
registerFile = new int[32];
registerFile[0]=0; //%xo is always 0 [RISC V]
}
public int getValue(int registerNumber)
{
return registerFile[registerNumber];
}
public void setValue(int registerNumber, int value)
{
registerFile[registerNumber] = value;
}
public int getProgramCounter()
{
return programCounter;
}
public void setProgramCounter(int programCounter)
{
this.programCounter = programCounter;
}
public void incrementProgramCounter()
{
this.programCounter++;
}
public String getContentsAsString()
{
StringBuilder sb = new StringBuilder();
sb.append("\nRegister File Contents:\n\n");
sb.append("PC" + "\t: " + programCounter + "\n\n");
sb.append("x" + 0 + "\t: " + registerFile[0]+ "\n"); //%xo is always 0 [RISC V]
for(int i = 1; i < 32; i++)
{
sb.append("x" + i + "\t: " + registerFile[i] + "\n");
}
sb.append("\n");
return sb.toString();
}
}

63
assignment-4/src/processor/pipeline/RegisterWrite.java
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@ -1,63 +0,0 @@
package processor.pipeline;
import generic.Simulator;
import generic.Instruction;
import generic.Instruction.OperationType;
import processor.Processor;
public class RegisterWrite {
Processor containingProcessor;
MA_RW_LatchType MA_RW_Latch;
IF_EnableLatchType IF_EnableLatch;
public RegisterWrite(Processor containingProcessor, MA_RW_LatchType mA_RW_Latch, IF_EnableLatchType iF_EnableLatch)
{
this.containingProcessor = containingProcessor;
this.MA_RW_Latch = mA_RW_Latch;
this.IF_EnableLatch = iF_EnableLatch;
}
public void performRW()
{
if(MA_RW_Latch.isRW_enable())
{
Instruction instruction = MA_RW_Latch.getInstruction();
OperationType op_type = instruction.getOperationType();
int alu_result = MA_RW_Latch.getALU_result();
boolean proceed = true;
if (op_type==OperationType.load)
{
int load_result = MA_RW_Latch.getLoad_result();
int rd = instruction.getDestinationOperand().getValue();
containingProcessor.getRegisterFile().setValue(rd, load_result);
}
else if (op_type==OperationType.end)
{
Simulator.setSimulationComplete(true);
proceed = false;
}
else
{
if (op_type!=OperationType.store && op_type!= OperationType.jmp && op_type!= OperationType.beq && op_type!=OperationType.bne && op_type!=OperationType.blt && op_type!=OperationType.bgt)
{
int rd = instruction.getDestinationOperand().getValue();
rd = instruction.getDestinationOperand().getValue();
containingProcessor.getRegisterFile().setValue(rd, alu_result);
}
}
IF_EnableLatch.setIF_enable(proceed);
}else{
try{
if(MA_RW_Latch.getInstruction().getOperationType() == OperationType.end){
IF_EnableLatch.setIF_enable(false);
}
else{
IF_EnableLatch.setIF_enable(true);
}
} catch(Exception e){
IF_EnableLatch.setIF_enable(true);
}
}
}
}

39
assignment-4/supporting_files/build.xml
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@ -1,39 +0,0 @@
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!-- WARNING: Eclipse auto-generated file.
Any modifications will be overwritten.
To include a user specific buildfile here, simply create one in the same
directory with the processing instruction <?eclipse.ant.import?>
as the first entry and export the buildfile again. --><project basedir="." default="build">
<property environment="env"/>
<property name="debuglevel" value="source,lines,vars"/>
<property name="target" value="1.8"/>
<property name="source" value="1.8"/>
<target name="init">
<mkdir dir="bin"/>
<copy includeemptydirs="false" todir="bin">
<fileset dir="src">
<exclude name="**/*.launch"/>
<exclude name="**/*.java"/>
</fileset>
</copy>
</target>
<target name="clean">
<delete dir="bin"/>
</target>
<target depends="clean" name="cleanall"/>
<target depends="build-subprojects,build-project" name="build"/>
<target name="build-subprojects"/>
<target depends="init" name="build-project">
<javac debug="true" debuglevel="${debuglevel}" destdir="bin" includeantruntime="false" source="${source}" target="${target}">
<src path="src"/>
</javac>
</target>
<target name="make-jar" depends="build">
<mkdir dir="jars"/>
<jar destfile="jars/simulator.jar" basedir="bin">
<manifest>
<attribute name="Main-Class" value="main.Main"/>
</manifest>
</jar>
</target>
</project>

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assignment-4/supporting_files/descending.out
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assignment-4/supporting_files/even-odd.out
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assignment-4/supporting_files/fibonacci.out
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assignment-4/supporting_files/palindrome.out
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assignment-4/supporting_files/prime.out
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40
assignment-4/supporting_files/test_cases/descending.asm
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@ -1,40 +0,0 @@
.data
a:
40
20
50
60
80
30
10
70
n:
8
.text
main:
sub %x3, %x3, %x3
sub %x4, %x4, %x4
load %x0, $n, %x8
outerloop:
blt %x3, %x8, innerloop
end
addi %x3, 1, %x4
innerloop:
addi %x3, 1, %x4
innerloopz:
blt %x4, %x8, swap
addi %3, 1, %x3
jmp outerloop
swap:
load %x3, $a, %x5
load %x4, $a, %x6
blt %x5, %x6, exchange
addi %x4, 1, %x4
jmp innerloopz
exchange:
sub %x7, %x7, %x7
add %x0, %x5, %x7
store %x6, 0, %x3
store %x7, 0, %x4
addi %x4, 1, %x4
jmp innerloopz

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assignment-4/supporting_files/test_cases/descending.endsystemstate
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1
assignment-4/supporting_files/test_cases/descending.expected
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Hash of the Processor State = 255541867

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assignment-4/supporting_files/test_cases/descending.out
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assignment-4/supporting_files/test_cases/evenorodd.asm
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.data
n:
11
.text
main:
load %x0, $n, %x3
divi %x3, 2, %x3
beq %x0, %x31, even
sub %x10, %x10, %x10
addi %x10, 1, %x10
end
even:
sub %x10, $x10, %x10
subi %x10, 1, %x10
end

65581
assignment-4/supporting_files/test_cases/evenorodd.endsystemstate
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assignment-4/supporting_files/test_cases/evenorodd.expected
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Hash of the Processor State = -224294686

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assignment-4/supporting_files/test_cases/evenorodd.out
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assignment-4/supporting_files/test_cases/fibonacci.asm
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.data
n:
10
.text
main:
addi %x0, 0, %x3
addi %x0, 1, %x4
add %x3, %x4, %x5
load %x0, $n, %x6
addi %x0, 65535, %x7
addi %x0, 0, %x8
store %x3, 0, %x7
subi %x7, 1, %x7
addi %x8, 1, %x8
store %x4, 0, %x7
subi %x7, 1, %x7
addi %x8, 1, %x8
for:
blt %x8, %x6, loop
end
loop:
add %x3, %x4, %x5
store %x5, 0, %x7
subi %x7, 1, %x7
addi %x8, 1, %x8
add %x0, %x4, %x3
add %x0, %x5, %x4
jmp for

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assignment-4/supporting_files/test_cases/fibonacci.endsystemstate
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assignment-4/supporting_files/test_cases/fibonacci.expected
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Hash of the Processor State = -1518357572

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assignment-4/supporting_files/test_cases/fibonacci.out
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assignment-4/supporting_files/test_cases/palindrome.asm
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.data
a:
4567654
.text
main:
load %x0, $a, %x3
sub %x7, %x7, %x7
loop:
divi %x3, 10, %x4
addi %x31, 0, %x30
muli %x7, 10, %x7
add %x7, %x30, %x7
divi %x3, 10, %x3
bgt %x3, %x0, loop
load %x0, $a, %x5
beq %x5, %x7, palindrome
sub %x10, %x10, %x10
subi %x10, 1, %x10
end
palindrome:
sub %x10, %x10, %x10
addi %x10, 1, %x10
end

65581
assignment-4/supporting_files/test_cases/palindrome.endsystemstate
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