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#ifndef INSTRUCTION_H
#define INSTRUCTION_H
#include <vector>
#include <string>
#include "registers.h"
#include "memory.h"
class Instruction {
public:
// TODO return types should be according to what instruction can pass from this stage
//virtual void decode(Registers *regs) = 0; // Read and prepare instructions
//virtual void execute() = 0; // ALU operations
//virtual void memory(Memory *mem) = 0; // Read or write to memory
//virtual void write_back(Registers *regs) = 0; // Write results to registers
virtual std::vector<std::string> to_strs() = 0; // Returns all fields of instructions in string
};
class InstructionR : public Instruction {
public:
InstructionR(std::uint8_t rs, std::uint8_t rd, std::uint8_t rt, std::uint8_t sa);
std::vector<std::string> to_strs();
protected:
std::uint8_t rs, rd, rt, sa;
};
class InstructionI : public Instruction {
public:
InstructionI(std::uint8_t rs, std::uint8_t rt, std::uint16_t immediate);
std::vector<std::string> to_strs();
protected:
std::uint8_t rs, rt;
std::uint16_t immediate;
};
class InstructionJ : public Instruction {
public:
InstructionJ(std::uint32_t address);
std::vector<std::string> to_strs();
protected:
std::uint32_t address;
};
#endif // INSTRUCTION_H
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