边界对齐 [
biān jiè duì qí]
[计] boundary alignment
- align 操作告诉编译器按特定的边界对齐下一个指令或声明。
The .align operation tells the assembler to align the next instruction or declaration at a certain boundary. - 注意所有声明的变量(使用 DMA 复制的)都是按四字边界对齐的且都是四字的整数倍。
Note that all of the declared variables which will be copied using DMA are aligned on quadword boundaries and are multiples of quadwords. - 在下一篇文章中我们将更详细地介绍这方面的内容,但是对于大部分 DMA 传输来说,都必须 按照 16 字节边界对齐,并且大小应该是 16 字节的整数倍。
We will deal with this more in a later article, but for the most part DMA transfers must be aligned to a 16-byte boundary and be sized as a multiple of 16 bytes.
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