RandomWOW/src/Instruction.hpp

/*
Copyright (c) 2018 tevador

This file is part of RandomX.

RandomX is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

RandomX is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with RandomX.  If not, see<http://www.gnu.org/licenses/>.
*/

#pragma once

#include <cstdint>
#include <iostream>

namespace RandomX {

	class Instruction {
	public:
		uint8_t opcode;
		uint8_t loca;
		uint8_t rega;
		uint8_t locb;
		uint8_t regb;
		uint8_t locc;
		uint8_t regc;
		uint8_t imm8;
		int32_t addra;
		union {
			uint32_t addrc;
			int32_t imm32;
		};
		const char* getName() const {
			return names[opcode];
		}
		friend std::ostream& operator<<(std::ostream& os, const Instruction& i) {
			i.print(os);
			return os;
		}
	private:
		void print(std::ostream&) const;
		static const char* names[256];
	};

	static_assert(sizeof(Instruction) == 16, "Invalid alignment of struct Instruction");

}