CA-Cache-processor/src/hardware/InstructionMemory.java at master · Th3Hunger/CA-Cache-processor · GitHub

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package hardware;

import java.io.BufferedReader;

import java.io.File;

import java.io.FileNotFoundException;

import java.io.FileReader;

import java.io.FileWriter;

import java.io.IOException;

import java.io.PrintWriter;

import java.io.ObjectInputStream.GetField;

import java.util.ArrayList;

import java.util.Arrays;

import java.util.Hashtable;

import java.util.List;

import java.util.Scanner;

/**

public class InstructionMemory {

public static String program_path = "data/Program.txt";

public static String ISA = "data/ISA.csv";

public static String[] instructions;

public static int int_count = 0;

public static ArrayList toinst = new ArrayList<>();

public static String[] supportInst = { "sub", "add", "lw", "sw", "beq", "j", "sll", "srl", "blt", "andi", "addi",

"sltu", "or", "mult" };

public static int numberofinst = 0;

public static Hashtable label_index = new Hashtable<>();

public static ArrayList label_arr = new ArrayList<>();

public static ArrayList<Object> infos = new ArrayList<Object>(); // give me infos about instruction

// inst -> 0 , type ->1

/**

* Instruction Memory Size = 1024 x 32 bits i.e 1024 x 4 Bytes = 4096

public InstructionMemory() {

instructions = new String[4096];

}

/**

* load the program to memory

* @throws IOException

* @throws MipsException

public void loadProgram() throws IOException, MipsException {

ArrayList<String> inst = new ArrayList<String>();

try {

File myObj = new File(program_path);

Scanner myReader = new Scanner(myObj);

while (myReader.hasNextLine()) {

String data = myReader.nextLine();

if (data.isEmpty() || data == null) {

Parser(inst);

return;

}

inst.add(data);

}

myReader.close();

} catch (FileNotFoundException e) {

System.out.println("ERROR!!!!!!!");

e.printStackTrace();

}

System.out.println(inst);

toinst = inst;

parselabel(inst);

Parser(inst);

numberofinst = Numberof_INS();

}

public static void parselabel(ArrayList<String> inst) throws IOException, MipsException {

ArrayList<String> info = new ArrayList<String>();

for (int i = 0; i < inst.size(); i++) {

String instr = inst.get(i);

String finals = instr.replace(' ', ',');

String[] sp = finals.split(",");

List<String> list = Arrays.asList(sp);

if (list.contains(":")) {

label_index.put(sp[0], i);

label_arr.add(i);

} else {

String ch = list.get(0);

String re = "";

for (int j = 0; j < ch.length(); j++) {

if (ch.charAt(j) == ':') {

label_index.put(re, i);

label_arr.add(i);

break;

} else {

re = re + ch.charAt(j);

}

public static int Numberof_INS() {

int c = 0;

for (int i = 0; i < instructions.length; i++) {

if (instructions[i] == null) {

break;

}

c++;

}

return c / 4;

}

/**

* 0- > Inst , ->1 OP ->FUNCT > 2 , TYPE ->3 , FLAG ->4

public static ArrayList<String> getInstInfo(String Instruction) throws IOException {

ArrayList<String> Result = new ArrayList<String>();

BufferedReader br = new BufferedReader(new FileReader(ISA));

String line = br.readLine();

while (line != null) {

String[] info = line.split(",");

String Inst = info[0];

if (Inst.equalsIgnoreCase(Instruction)) {

String OP = info[1];

String FUNCT = info[2];

String TYPE = info[3];

String FLAG = info[4];

Result.add(OP);

Result.add(FUNCT);

Result.add(TYPE);

Result.add(FLAG);

}

line = br.readLine();

}

br.close();

return Result;

}

/**

* 0- > Inst , ->1 OP ->FUNCT > 2 , TYPE ->3 , FLAG ->4 OP , FUNCT , TYPE , FLAG

public static void Parser(ArrayList<String> inst) throws IOException, MipsException {

System.out.println(label_index);

ArrayList<String> info = new ArrayList<String>();

for (int i = 0; i < inst.size(); i++) {

String binary_inst = "";

// i is the first instruction

String instr = inst.get(i);

String finals = instr.replace(' ', ',');

String[] sp = finals.split(",");

boolean Label_exist = false;

List<String> list = Arrays.asList(sp);

if (list.contains(":")) {

Label_exist = true;

} else {

String ch = list.get(0);

String re = "";

for (int j = 0; j < ch.length(); j++) {

if (ch.charAt(j) == ':') {

Label_exist = true;

break;

} else {

re = re + ch.charAt(j);

}

if (Label_exist) {

for (int z = 0; z < supportInst.length; z++) {

if (list.contains(supportInst[z])) {

info = getInstInfo(supportInst[z]);

}

} else {

info = getInstInfo(sp[0]);

}

if (info.isEmpty()) {

throw new MipsException("Compilation error");

}

// System.out.println("this is info: " + info);

String op = info.get(0);

String funct = info.get(1);

String type = info.get(2);

String flag = info.get(3);

String rs1 = "";

String rs2 = "";

String rd = "";

boolean rdf = true;

boolean rsf = true;

boolean rtf = true;

boolean labelflag = true;

String Imm_Add = "";

String jlabel = "";

String label = "";

String inst_ = "";

// inst_ = sp[0].toLowerCase(); // not always rightt

if (Label_exist) {

for (int j = 1; j < sp.length; j++) {

if (!sp[j].equalsIgnoreCase("")) {

if (sp[j].equalsIgnoreCase(":")) {

continue;

}

inst_ = sp[j].toLowerCase();

break;

}

} else {

inst_ = sp[0].toLowerCase();

}

//System.out.println("This is inst_ : " + inst_);

for (int z = 1; z < sp.length; z++) {

if (type.equalsIgnoreCase("R")) {

if (sp[z].equalsIgnoreCase(":")) {

continue;

}

if (!sp[z].equalsIgnoreCase("") && !sp[z].equalsIgnoreCase(":")) {

if (Label_exist) {

inst_ = sp[z].toLowerCase();

Label_exist = false;

continue;

}

if (rdf) {

rs1 = sp[z].toLowerCase();

rdf = false;

continue;

}

if (rsf) {

rs2 = sp[z].toLowerCase();

rsf = false;

continue;

}

if (rtf) {

rd = sp[z].toLowerCase();

rtf = false;

}

} else if (type.equalsIgnoreCase("I") && inst_.equalsIgnoreCase("beq")

|| inst_.equalsIgnoreCase("blt")) {

if (sp[z].equalsIgnoreCase(":")) {

continue;

}

if (!sp[z].equalsIgnoreCase("") && !sp[z].equalsIgnoreCase(":")) {

if (Label_exist) {

inst_ = sp[z].toLowerCase();

Label_exist = false;

continue;

}

if (rtf) {

rs1 = sp[z].toLowerCase();

rtf = false;

continue;

}

if (rsf) {

rs2 = sp[z].toLowerCase();

rsf = false;

continue;

}

if (labelflag) {

String labelz = "";

labelz = sp[z];

labelz = "" + label_index.get(labelz);

// -1 ? think

int fix = Integer.parseInt(labelz);

fix = fix - 1;

fix = fix - i;

label = Integer.toBinaryString(fix);

labelflag = false;

}

} else if (type.equalsIgnoreCase("I")) {

if (inst_.equalsIgnoreCase("addi") || inst_.equalsIgnoreCase("andi")) {

if (sp[z].equalsIgnoreCase(":")) {

continue;

}

if (!sp[z].equalsIgnoreCase("") && !sp[z].equalsIgnoreCase(":")) {

if (Label_exist) {

inst_ = sp[z].toLowerCase();

Label_exist = false;

continue;

}

if (rtf) {

rs1 = sp[z].toLowerCase();

rtf = false;

continue;

}

if (rsf) {

rs2 = sp[z].toLowerCase();

rsf = false;

continue;

}

int x = Integer.parseInt(sp[z]);

Imm_Add = Integer.toBinaryString(x);

Imm_Add = extend("Imm", Imm_Add);

}

else if (inst_.equalsIgnoreCase("sw") || inst_.equalsIgnoreCase("lw")) {

// for sw , lw

// System.out.println("this is me" + sp[z]);

if (sp[z].equalsIgnoreCase(":")) {

continue;

}

if (!sp[z].equalsIgnoreCase("") && !sp[z].equalsIgnoreCase(":")) {

if (Label_exist) {

inst_ = sp[z].toLowerCase();

Label_exist = false;

continue;

}

if (rtf) {

// to be fixed

rs1 = sp[z].toLowerCase();

rtf = false;

continue;

}

if (rsf) {

rs2 = sp[z].toLowerCase();

rs2 = rs2.replace('(', ',');

rs2 = rs2.replace(')', ',');

// System.out.println("this rs2 "+rs2);

String[] newz = rs2.split(",");

// imm equal first value ,, register is the second

Integer bin = Integer.parseInt(newz[0]);

String Immediate = bin.toBinaryString(bin);

Imm_Add = extend("Imm", Immediate);

rs2 = newz[1].toLowerCase();

rsf = false;

}

} else if (type.equalsIgnoreCase("J")) {

if (sp[z].equalsIgnoreCase(":")) {

continue;

}

if (!sp[z].equalsIgnoreCase("") && !sp[z].equalsIgnoreCase(":")) {

if (Label_exist) {

inst_ = sp[z].toLowerCase();

Label_exist = false;

}

String labelz = "";

labelz = sp[z].toLowerCase();

labelz = "" + label_index.get(labelz);

// -1 ? think

int fix = Integer.parseInt(labelz);

jlabel = Integer.toBinaryString(fix);

}

} else if (type.equalsIgnoreCase("S")) {

if (sp[z].equalsIgnoreCase(":")) {

continue;

}

if (!sp[z].equalsIgnoreCase("") && !sp[z].equalsIgnoreCase(":")) {

if (Label_exist) {

inst_ = sp[z].toLowerCase();

Label_exist = false;

continue;

}

if (rtf) {

rs1 = sp[z].toLowerCase();

rtf = false;

continue;

}

if (rsf) {

rs2 = sp[z].toLowerCase();

rsf = false;

continue;

}

int x = Integer.parseInt(sp[z]);

Imm_Add = Integer.toBinaryString(x);

Imm_Add = extend("funct", Imm_Add);

}

if (!rdf || !rsf || !rtf || !Label_exist) {

//System.out.println("type:" + type);

String Binary_rs1 = "";

String Binary_rs2 = "";

String Binary_rd = "";

String Binary_imm = "";

// System.out.println(type);

if (type.equalsIgnoreCase("R")) {

Binary_rs1 = RegisterFile.reg.get(rs1);

// System.out.println("rs1"+ rs1 + "rs2" + rs2+" "+"rd"+rd);

Binary_rs2 = RegisterFile.reg.get(rs2);

Binary_rd = RegisterFile.reg.get(rd);

// System.out.println("rd"+" " + Binary_rd);

// System.out.println(op);

op = extend("OP", op);

binary_inst = "" + flag + op + Binary_rs1 + Binary_rs2 + Binary_rd;

} else if (type.equalsIgnoreCase("I")) {

Binary_rs1 = RegisterFile.reg.get(rs1);

Binary_rs2 = RegisterFile.reg.get(rs2);

funct = extend("funct", funct);

// System.out.println(Imm_Add +" " + Imm_Add.length());

binary_inst = "" + flag + Imm_Add + Binary_rs1 + Binary_rs2 + funct;

if (labelflag == false) {

String labelex = InstructionMemory.extend("Imm", label);

// System.out.println("beq: "+labelex+ labelex.length());

binary_inst = "" + flag + labelex + Binary_rs1 + Binary_rs2 + funct;

}

} else if (type.equalsIgnoreCase("j")) {

String op2 = extend("funct", funct);

String ext = extend("j", jlabel);

//System.out.println("this op2 j : " + op2);

binary_inst = "" + flag + ext + op2;

} else if (type.equalsIgnoreCase("S")) {

Binary_rs1 = RegisterFile.reg.get(rs1);

Binary_rs2 = RegisterFile.reg.get(rs2);

op = info.get(1);

op = extend("OP", op);

// System.out.println("funct: " + funct);

// funct = extend("funct", funct);

// System.out.println(Imm_Add +" " + Imm_Add.length());

binary_inst = "" + flag + op + Binary_rs1 + Binary_rs2 + Imm_Add;

}

// System.out.println("binary_inst" + " " + binary_inst + " " + "size" + " " +

// binary_inst.length());

ArrayList<Object> s = new ArrayList<Object>();

s.add(sp[0]);

s.add(type);

infos.add(s);

// System.out.println("instruction: " + " " + binary_inst);

setInstruction(binary_inst);

}

public static String extend(String type, String test) {

int len = test.length();

int target = 0;

if (type.equalsIgnoreCase("op")) {

target = 16;

} else if (type.equalsIgnoreCase("Imm")) {

target = 16;

} else if (type.equalsIgnoreCase("PC")) {

target = 32;

} else if (type.equalsIgnoreCase("j")) {

target = 26;

} else if (type.equalsIgnoreCase("28")) {

target = 28;

} else if (type.equalsIgnoreCase("funct")) {

target = 5;

}

String z = "";

for (int i = len; i < target; i++) {

z = z + '0';

}

String result = z + test;

return result;

}

public static void setInstruction(String instruction) {

if (instruction.length() > 36) {

System.out.println("Wrong instruction format!!");

return;

}

String first_byte = "";

for (int i = 0; i < 32; i = i + 8) {

first_byte = "";

for (int j = i; j < i + 8; j++) {

first_byte = first_byte + instruction.charAt(j);

}

instructions[int_count / 8] = first_byte;

int_count += 8;

}

public static String readInstruction(int index) throws MipsException {

// index is giveen by pc ;

/// decoding....

// if (index % 4 != 0) {

// throw new MipsException("************Cant Read the instruction**********");

// }

String comp_inst = "";

for (int i = index; i < index + 4; i++) {

if (instructions[i] == null) {

throw new MipsException("************Cant Read the instruction**********");

}

comp_inst = comp_inst + instructions[i];

}

return comp_inst;

}

CA-Cache-processor/src/hardware/InstructionMemory.java at master · Th3Hunger/CA-Cache-processor · GitHub

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