CU.h

#pragma once
#ifndef CU_H
#define CU_H

#include <cstdint>
#include <string>

using namespace std;

// Opcode 정의
enum Opcode {
    OP_LDA = 0x0,   
    OP_STA = 0x1,   
    OP_ADD = 0x2,   
    OP_MUL = 0x3,   
    OP_DIV = 0x4,  
    OP_MOD = 0x5,   
    OP_SEA = 0xF  
};

class CU {
public:
    CU() {}

    // 명령어 해독
    Opcode decode(uint16_t instruction) {
        return static_cast<Opcode>((instruction >> 12) & 0x0F);
    }

    // Opcode-> 문자열
    string opcodeToString(Opcode op) {
        switch (op) {
        case OP_LDA: return "LDA";
        case OP_STA: return "STA";
        case OP_ADD: return "ADD";
        case OP_MUL: return "MUL";
        case OP_DIV: return "DIV";
        case OP_MOD: return "MOD";
        case OP_SEA: return "SEA";
        default: return "UNKNOWN";
        }
    }

    // 문자열-> Opcode
    int stringToOpcode(const string& str) {
        if (str == "LDA") return OP_LDA;
        if (str == "STA") return OP_STA;
        if (str == "ADD") return OP_ADD;
        if (str == "MUL") return OP_MUL;
        if (str == "DIV") return OP_DIV;
        if (str == "MOD") return OP_MOD;
        if (str == "SEA") return OP_SEA;
        return -1;
    }
};

#endif