no getregs and setregs support in aarch64

[sunc-cn]

when to support full setregs/getregs etc in aarch64

[asomers]

When somebody submits a patch for it.

[devnexen]

will try to push the struct side of things in libc for next release at least.

[irgstg]

I have implemented some in a personal project I have.
I will open PR as soon as I can.

[sgleske-ias]

@asomers said:

When somebody submits a patch for it.

Please follow through on your comment with #1695 ; two years seems a bit past the period for respecting a contributor's time considering how you replied to this issue.

[SteveLauC]

Well, it is unfortunate that PR didn't get reviewed for 2 years, and I am sorry about this, I plan to take a look at that PR this weekend.

Please follow through on your comment with #1695

Please don't blame asomser, it is not easy to maintain Nix, reviewing a PR can require several hours, and he was experiencing burnout at that time, as you can see from this comment.

[SteveLauC]

This issue will be closed by #2044