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main.cpp
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main.cpp
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#include <string>
#include <sstream>
#include <iostream>
#include <fstream>
#include "configure.h"
#include "./cpu/cpu.h"
using namespace std;
// globally defined cpu instance
Cpu cpu0(0, RAM_PROGRAM_ADDRESS);
Cpu cpu1(0, RAM_PROGRAM_ADDRESS);
// read data from .txt file
void read_data(string filename);
// converts assembly to machine code
int parse_assembly(string data);
//updates the program data with machine code commands from the file
void update_program_data(int data, int n);
// prints squared integer
void print_squared(void);
// prints prime numbers
void print_prime(void);
int main()
{
print_squared();
print_prime();
return 0;
}
void read_data(string filename)
{
string buffer;
int temp;
int i = 0;
ifstream file;
file.open(filename, ios::out | ios::in);
while (getline(file, buffer))
{
if (i >= 31)
break;
temp = parse_assembly(buffer);
update_program_data(i, temp);
i++;
}
file.close();
}
int parse_assembly(string data)
{
istringstream s(data);
string buffer;
string opcode;
int temp_int;
int op_code;
int rs1;
int rs0;
int rd;
s >> buffer;
opcode = buffer;
if (opcode == "LD")
op_code = 0x00;
if (opcode == "STR")
op_code = 0x01;
if (opcode == "ADD")
op_code = 0x02;
if (opcode == "SUB")
op_code = 0x03;
if (opcode == "MLT")
op_code = 0x04;
if (opcode == "DIV")
op_code = 0x05;
if (opcode == "LOOP")
op_code = 0x06;
if (opcode == "BGE")
op_code = 0x07;
if (opcode == "JI")
op_code = 0x08;
if (opcode == "ADDI")
op_code = 0x09;
if (opcode == "EQ")
op_code = 0x0A;
if (opcode == "END")
op_code = 0x0F;
// Map named regs to machine code
for (int i = 0; i < 3; i++)
{
s >> buffer;
int temp;
if (buffer == "PC")
temp = 0;
if (buffer == "RA0")
temp = 1;
if (buffer == "RA1")
temp = 2;
if (buffer == "T0")
temp = 5;
if (buffer == "T1")
temp = 6;
if (buffer == "T2")
temp = 7;
if (buffer == "T3")
temp = 8;
if (buffer == "T4")
temp = 9;
if (buffer == "T5")
temp = 10;
if (buffer == "T6")
temp = 11;
if (buffer == "T7")
temp = 12;
if (buffer == "T8")
temp = 13;
if (buffer == "T9")
temp = 14;
if (buffer == "T10")
temp = 15;
if (buffer == "S0")
temp = 16;
if (buffer == "S1")
temp = 17;
if (buffer == "S2")
temp = 18;
if (buffer == "S3")
temp = 19;
if (buffer == "S4")
temp = 20;
if (buffer == "S5")
temp = 21;
if (buffer == "S6")
temp = 22;
if (buffer == "S7")
temp = 23;
if (buffer == "S8")
temp = 24;
if (buffer == "S9")
temp = 25;
if (buffer == "S10")
temp = 26;
if (buffer == "S11")
temp = 27;
if (buffer == "S12")
temp = 28;
if (buffer == "S13")
temp = 29;
if (buffer == "S14")
temp = 30;
if (buffer == "S15")
temp = 31;
if (i == 0)
rs1 = temp;
if (i == 1)
rs0 = temp;
if (i == 2)
rd = temp;
}
op_code = op_code << 6 * 4;
rs1 = rs1 << 4 * 4;
rs0 = rs0 << 2 * 4;
return (op_code | rs1 | rs0 | rd);
}
void update_program_data(int n, int data)
{
bool success = true;
int read;
success = cpu0.ram.write(n + RAM_PROGRAM_ADDRESS - 1, data);
read = cpu0.ram.read(n + RAM_PROGRAM_ADDRESS - 1);
//cout << "Ram Write: " << std::hex << data << " Ram Read: " << std::hex << read << endl;
if (!success)
cout << "Error when writing the program data!" << endl;
}
void print_squared(void)
{
int temp=0;
read_data("assembly_squared.txt");
/*for (int i = -1; i < RAM_PROGRAM_ADDRESS - 4; i += 4)
{
cout << std::hex << cpu0.ram.read(RAM_PROGRAM_ADDRESS + i) << " " << cpu0.ram.read(RAM_PROGRAM_ADDRESS + i + 1) << " " << cpu0.ram.read(RAM_PROGRAM_ADDRESS + i + 2) << " " << cpu0.ram.read(RAM_PROGRAM_ADDRESS + i + 3) << endl;
}*/
for (int i = 0; i < 40; i++)
{
cpu0.execute_cycle();
/*cout << endl
<< "__________________________________" << endl;
cout << endl
<< i << " CYCLE EXECUTED" << endl;
cout << "_____FETCHED INSTRUCTION_____" << endl;
cout << "Counter: " << cpu0.ir.programCounter.get_counter() << endl;
cout << "OP: " << std::hex << cpu0.ir.op_code << " RS1: " << cpu0.ir.rs1 << " RS0: " << cpu0.ir.rs0 << " RD: " << cpu0.ir.rd << endl;
cout << "_____Core Regs Content_____" << endl;
cout << "PC: " << cpu0.ram.read(0) << " "
<< " RA: " << cpu0.ram.read(1) << " T0: " << cpu0.ram.read(5) << " T1: " << cpu0.ram.read(6) << " T2: " << cpu0.ram.read(7) << endl;
cout << "____RAM DATA_____" << endl;
cpu0.ram.print_all();*/
if (temp != cpu0.ram.read(9))
{
cout << "Squared Integer: " << std::dec << cpu0.ram.read(9) << std::hex << endl;
temp = cpu0.ram.read(9);
}
}
}
void print_prime(void)
{
read_data("assembly_prime.txt");
/*for (int i = -1; i < RAM_PROGRAM_ADDRESS - 4; i += 4)
{
cout << std::hex << cpu0.ram.read(RAM_PROGRAM_ADDRESS + i) << " " << cpu0.ram.read(RAM_PROGRAM_ADDRESS + i + 1) << " " << cpu0.ram.read(RAM_PROGRAM_ADDRESS + i + 2) << " " << cpu0.ram.read(RAM_PROGRAM_ADDRESS + i + 3) << endl;
}*/
while (true)
{
cpu1.execute_cycle();
/*cout << endl
<< "__________________________________" << endl;
cout << endl
<< std::dec << i << " CYCLE EXECUTED" << std::hex<<endl;
cout << "_____FETCHED INSTRUCTION_____" << endl;
cout << "Counter: " << cpu0.ir.programCounter.get_counter() << endl;
cout << "OP: " << std::hex << cpu0.ir.op_code << " RS1: " << cpu0.ir.rs1 << " RS0: " << cpu0.ir.rs0 << " RD: " << cpu0.ir.rd << endl;
cout << "_____Core Regs Content_____" << endl;
cout << "PC: " << cpu0.ram.read(0) << " "
<< " RA: " << cpu0.ram.read(1) << " T0: " << cpu0.ram.read(5) << " T1: " << cpu0.ram.read(6) << " T2: " << cpu0.ram.read(7) << endl;
cout << "____RAM DATA_____" << endl;
cpu0.ram.print_all();*/
if (cpu1.ram.read(14) == 1)
{
cout << std::dec << "Prime number found: " << cpu1.ram.read(5) << std::hex << endl;
if (cpu1.ram.read(5) >= 20)
break;
}
}
}