RandomX portable interpreter

src/InterpretedVirtualMachine.hpp

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+/*
+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 "VirtualMachine.hpp"
+#include "Program.hpp"
+#include <vector>
+
+namespace RandomX {
+
+	class InterpretedVirtualMachine;
+
+	typedef void(InterpretedVirtualMachine::*InstructionHandler)(Instruction&);
+
+	class InterpretedVirtualMachine : public VirtualMachine {
+	public:
+		InterpretedVirtualMachine(bool softAes) : VirtualMachine(softAes) {}
+		virtual void initializeProgram(const void* seed) override;
+		virtual void execute() override;
+		const Program& getProgam() {
+			return p;
+		}
+	private:
+		static InstructionHandler engine[256];
+		Program p;
+		std::vector<convertible_t> stack;
+		uint64_t pc, ic;
+
+		convertible_t loada(Instruction&);
+		convertible_t loadbr0(Instruction&);
+		convertible_t loadbr1(Instruction&);
+		double loadbf(Instruction&);
+		convertible_t& getcr(Instruction&);
+		convertible_t& getcf(Instruction&);
+
+		void stackPush(convertible_t& c) {
+			stack.push_back(c);
+		}
+
+		void stackPush(uint64_t x) {
+			convertible_t c;
+			c.u64 = x;
+			stack.push_back(c);
+		}
+
+		convertible_t stackPopValue() {
+			convertible_t top = stack.back();
+			stack.pop_back();
+			return top;
+		}
+
+		uint64_t stackPopAddress() {
+			convertible_t top = stack.back();
+			stack.pop_back();
+			return top.u64;
+		}
+
+		void h_ADD_64(Instruction&);
+		void h_ADD_32(Instruction&);
+		void h_SUB_64(Instruction&);
+		void h_SUB_32(Instruction&);
+		void h_MUL_64(Instruction&);
+		void h_MULH_64(Instruction&);
+		void h_MUL_32(Instruction&);
+		void h_IMUL_32(Instruction&);
+		void h_IMULH_64(Instruction&);
+		void h_DIV_64(Instruction&);
+		void h_IDIV_64(Instruction&);
+		void h_AND_64(Instruction&);
+		void h_AND_32(Instruction&);
+		void h_OR_64(Instruction&);
+		void h_OR_32(Instruction&);
+		void h_XOR_64(Instruction&);
+		void h_XOR_32(Instruction&);
+		void h_SHL_64(Instruction&);
+		void h_SHR_64(Instruction&);
+		void h_SAR_64(Instruction&);
+		void h_ROL_64(Instruction&);
+		void h_ROR_64(Instruction&);
+		void h_FPADD(Instruction&);
+		void h_FPSUB(Instruction&);
+		void h_FPMUL(Instruction&);
+		void h_FPDIV(Instruction&);
+		void h_FPSQRT(Instruction&);
+		void h_FPROUND(Instruction&);
+		void h_CALL(Instruction&);
+		void h_RET(Instruction&);
+	};
+}