VST/VLD实际做什么? [英] What VST/VLD actually do?

问题描述

下面两行代码会发生什么?

What exactly will happen with below 2 lines of code?

vst1.64 {d8, d9, d10, d11}, [r4:128]!
vst1.64 {d12, d13, d14, d15}, [r4:128]

更笼统地说，我想知道什么是VST& VLD从以下日期开始执行文档操作: ARM信息中心没有"不能对我说清楚.

More generally, I want to know what VST & VLD do since doc from: ARM InfoCenter doesn't make it clear for me.

推荐答案

vst1.64 {d8, d9, d10, d11}, [r4:128]!

该指令将寄存器d8，d9，d10和d11的内容存储在r4指向的位置.提示此位置与128位边界对齐.之后，r4将增加存储的字节数.在您的情况下，这将是32(4乘8字节)

This instruction stores the content of the registers d8, d9, d10 and d11 at the location pointed by r4. This location is hinted to be aligned to a 128 bit boundary. Afterwards r4 will be incremented by the amount of bytes stored. These would be 32 (four times 8 bytes) in your case

vst1.64 {d12, d13, d14, d15}, [r4:128]

该指令与上述相同，但存储了d12，d13，d14和d15. R4不会增加，而是留在原处.

This instruction does the same as the above but stores d12, d13, d14 and d15. R4 will not be incremented but left where it is.

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