Function x86ArithmeticHandler

src/vm.cpp:199–322

	}

	bool x86ArithmeticHandler(Instruction* instruction, ZydisMnemonic operation, bool storeOutput)
	{
		std::vector<ZydisDecodedOperand> operandInfo = instruction->getOperandInfo();

		switch (operandInfo[0].type)
		{
		case ZYDIS_OPERAND_TYPE_REGISTER:
		{
			switch (operandInfo[1].type)
			{
			case ZYDIS_OPERAND_TYPE_REGISTER:
			{
				emitPushRegister(instruction, operandInfo[0].reg.value, operandInfo[0].size);
				emitPushRegister(instruction, operandInfo[1].reg.value, operandInfo[0].size);
				emitArithmetic(instruction, operation, operandInfo[0].size);
				emitPopRegister(instruction, ZYDIS_REGISTER_RFLAGS, 64);
				if (storeOutput)
				{
					if (operandInfo[0].size == 32)
						zeroRegister(instruction, operandInfo[0].reg.value);
					emitPopRegister(instruction, operandInfo[0].reg.value, operandInfo[0].size);
				}
				else
				{
					emitPopRegister(instruction, R0, operandInfo[0].size);
				}
				return 1;
			}
			case ZYDIS_OPERAND_TYPE_IMMEDIATE:
				emitPushRegister(instruction, operandInfo[0].reg.value, operandInfo[0].size);
				emitPushImmediate(instruction, operandInfo[1].imm.value.s, operandInfo[0].size);
				emitArithmetic(instruction, operation, operandInfo[0].size);
				emitPopRegister(instruction, ZYDIS_REGISTER_RFLAGS, 64);
				if (storeOutput)
				{
					if (operandInfo[0].size == 32)
						zeroRegister(instruction, operandInfo[0].reg.value);
					emitPopRegister(instruction, operandInfo[0].reg.value, operandInfo[0].size);
				}
				else
				{
					emitPopRegister(instruction, R0, operandInfo[0].size);
				}
				return 1;
			case ZYDIS_OPERAND_TYPE_MEMORY:
			{
				calculateEffectiveAddress(instruction, operandInfo[1].mem);
				emitRead(instruction, operandInfo[0].size);
				emitPushRegister(instruction, operandInfo[0].reg.value, operandInfo[0].size);
				emitArithmetic(instruction, operation, operandInfo[0].size);
				emitPopRegister(instruction, ZYDIS_REGISTER_RFLAGS, 64);

				if (storeOutput)
				{
					if (operandInfo[0].size == 32)
						zeroRegister(instruction, operandInfo[0].reg.value);
					emitPopRegister(instruction, operandInfo[0].reg.value, operandInfo[0].size);
				}