/*
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;

	typedef void(Instruction::*InstructionVisualizer)(std::ostream&) const;

	class Instruction {
	public:
		uint8_t opcode;
		uint8_t dst;
		uint8_t src;
		uint8_t alt;
		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 InstructionVisualizer engine[256];

		void genAddressReg(std::ostream& os) const;
		void genAddressImm(std::ostream& os) const;
		void genAddressRegDst(std::ostream&) const;

		void  h_IADD_R(std::ostream&) const;
		void  h_IADD_M(std::ostream&) const;
		void  h_IADD_RC(std::ostream&) const;
		void  h_ISUB_R(std::ostream&) const;
		void  h_ISUB_M(std::ostream&) const;
		void  h_IMUL_9C(std::ostream&) const;
		void  h_IMUL_R(std::ostream&) const;
		void  h_IMUL_M(std::ostream&) const;
		void  h_IMULH_R(std::ostream&) const;
		void  h_IMULH_M(std::ostream&) const;
		void  h_ISMULH_R(std::ostream&) const;
		void  h_ISMULH_M(std::ostream&) const;
		void  h_IDIV_C(std::ostream&) const;
		void  h_ISDIV_C(std::ostream&) const;
		void  h_INEG_R(std::ostream&) const;
		void  h_IXOR_R(std::ostream&) const;
		void  h_IXOR_M(std::ostream&) const;
		void  h_IROR_R(std::ostream&) const;
		void  h_IROL_R(std::ostream&) const;
		void  h_FPSWAP_R(std::ostream&) const;
		void  h_FPADD_R(std::ostream&) const;
		void  h_FPADD_M(std::ostream&) const;
		void  h_FPSUB_R(std::ostream&) const;
		void  h_FPSUB_M(std::ostream&) const;
		void  h_FPNEG_R(std::ostream&) const;
		void  h_FPMUL_R(std::ostream&) const;
		void  h_FPMUL_M(std::ostream&) const;
		void  h_FPDIV_R(std::ostream&) const;
		void  h_FPDIV_M(std::ostream&) const;
		void  h_FPSQRT_R(std::ostream&) const;
		void  h_COND_R(std::ostream&) const;
		void  h_COND_M(std::ostream&) const;
		void  h_CFROUND(std::ostream&) const;
		void  h_ISTORE(std::ostream&) const;
		void  h_FSTORE(std::ostream&) const;
		void  h_NOP(std::ostream&) const;
	};

	static_assert(sizeof(Instruction) == 8, "Invalid alignment of struct Instruction");

}