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

[Nick Desaulniers via libc-commits]

nickdesaulniers wrote:

> Not sure you're aware of it so I'll mention it anyway. There is some ABI documentation about requirements for Arm/Thumb setjmp/longjmp in the clib32 https://github.com/ARM-software/abi-aa/blob/main/clibabi32/clibabi32.rst#setjmph

I was not! Thanks for the reference.  Here's some more TODO's I filed after reading that section:
- https://github.com/llvm/llvm-project/issues/94072
- https://github.com/llvm/llvm-project/issues/94071
- https://github.com/llvm/llvm-project/issues/94069

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