[libc-commits] [libc] [libc][arm] implement a basic setjmp/longjmp (PR #93220)

[Simon Tatham via libc-commits]

https://github.com/statham-arm approved this pull request.

LGTM. I have a minor performance suggestion about the Thumb-1 `setjmp`, but I won't insist on it.

https://github.com/llvm/llvm-project/pull/93220