YulRunner: Add support for memoryguard() and literal parameters

Author: Marenz

test/tools/yulInterpreter/EVMInstructionInterpreter.cpp

@@ -475,6 +475,8 @@ u256 EVMInstructionInterpreter::evalBuiltin(
 			);
 		return 0;
 	}
+	else if (fun == "memoryguard")
+		return _evaluatedArguments.at(0);
 	else
 		yulAssert(false, "Unknown builtin: " + fun);
 	return 0;

test/tools/yulInterpreter/Interpreter.cpp

@@ -351,7 +351,19 @@ void ExpressionEvaluator::evaluateArgs(
 		if (!_literalArguments || !_literalArguments->at(_expr.size() - i - 1))
 			visit(expr);
 		else
-			m_values = {0};
+		{
+			string literal = std::get<Literal>(expr).value.str();
+
+			try
+			{
+				m_values = {u256(literal)};
+			}
+			catch (exception&)
+			{
+				m_values = {u256(0)};
+			}
+		}
+
 		values.push_back(value());
 		++i;
 	}