Prepare fuzzing engine

src/unicorn-emulator/function_wrapper.hpp

@@ -0,0 +1,36 @@
+#pragma once
+
+#include <memory>
+#include <functional>
+
+#include "object.hpp"
+
+template <typename ReturnType, typename... Args>
+class function_wrapper : public object
+{
+public:
+	using user_data_pointer = void*;
+	using c_function_type = ReturnType(Args..., user_data_pointer);
+	using functor_type = std::function<ReturnType(Args...)>;
+
+	function_wrapper(functor_type functor)
+		: functor_(std::make_unique<functor_type>(std::move(functor)))
+	{
+	}
+
+	c_function_type* get_function() const
+	{
+		return +[](Args... args, user_data_pointer user_data) -> ReturnType
+		{
+			return (*static_cast<functor_type*>(user_data))(std::forward<Args>(args)...);
+		};
+	}
+
+	user_data_pointer get_user_data() const
+	{
+		return this->functor_.get();
+	}
+
+private:
+	std::unique_ptr<functor_type> functor_{};
+};