quadword的翻译

Therefore, if you want to store only one byte, if you tried to do it directly on an unaligned address, it would both go into the wrong location and clobber the remaining bytes in the quadword.

因此，如果希望只存储一个字节，且试图在未对齐的地址直接存储，那么它就会进入到不正确的位置并会截断四字内剩余的字节。

Spu_rlmaskqw operates on the whole quadword at a time, but only up to7 bits ( it performs a modulus on count to put it in the proper range).

spu rlmaskqw会对整个4字同时进行操作，不过最多只能移动7位（它会对count取模，从而将其放入正确的范围内）。

All stack values must be doubleword ( 8-byte) aligned, and the whole frame should be quadword ( 16-byte) aligned.

所有堆栈的值都必须是双字（8个字节）对齐的，整个帧应该是4字（16个字节）对齐的。