Function ShellCodeGenerator

include/CallStack-Spoofer.h:131–161

#else
	template <typename Func, typename ...Args>
	typename std::invoke_result<Func, Args...>::type
#endif
		__declspec(safebuffers)ShellCodeGenerator(Func f, Args&... args)
	{
#ifdef _KERNEL_MODE
		using this_func_type = decltype(ShellCodeGenerator<RetType, Func, Args&...>);
		using return_type = RetType;
#else
		using this_func_type = decltype(ShellCodeGenerator<Func, Args&...>);
		using return_type = typename std::invoke_result<Func, Args...>::type;
#endif
		const uintptr_t xor_key = 0xff00ff00ff00ff00;
		void* ret_addr_in_stack = _AddressOfReturnAddress();
		uintptr_t temp = *(uintptr_t*)ret_addr_in_stack;
		temp ^= xor_key;
		*(uintptr_t*)ret_addr_in_stack = 0;

		if constexpr (std::is_same<return_type, void>::value)
		{
			f(args...);
			temp ^= xor_key;
			*(uintptr_t*)ret_addr_in_stack = temp;
		}
		else
		{
			return_type&& ret = f(args...);
			temp ^= xor_key;
			*(uintptr_t*)ret_addr_in_stack = temp;
			return ret;
		}
	}