Add protected region

Add protection region value and check it against base address.

As minimum, the protected region should be the first 8 bytes, following the manual recommendation.
It might be interesting more restriction than that, due to the usage of ushm for simulated motors.

首先定位处理基地址并将数据分配到 Power PMAC 缓冲区的 C 代码。阅读当前如何检查缓冲区地址，然后将受保护区域定义为前 8 个字节，并验证基地址不能与其重叠。使用项目中现有的检查确认行为，尽管 issue 中没有指定测试文件。

由索引模型根据 Issue 内容生成。