Emulated TLS no longer required for emulated purecap code on Morello.

[rwatson]

With the recent shift to a proper thread-local storage ABI for Morello purecap code, ccc no longer needs to request emulated TLS.

[jrtc27]

Well the varargs ABI difference still exists, so printf calls will still be broken. If you want to hard-code the new ABI you can, though https://github.com/CTSRD-CHERI/cheribsd-ports/blob/main/devel/llvm-base/files/wrapper.sh.in has the logic to copy for detecting which version to use.

[rwatson]

Well the varargs ABI difference still exists, so printf calls will still be broken. If you want to hard-code the new ABI you can, though https://github.com/CTSRD-CHERI/cheribsd-ports/blob/main/devel/llvm-base/files/wrapper.sh.in has the logic to copy for detecting which version to use.

Change made.

[jrtc27]

Hybrid still needs it too, it changes how capabilities are passed as variadic arguments there

[bsdjhb]

I fixed it to use var-args on morello hybrid as well, so should be good to go now.

[jrtc27]

Seems fine to me now so long as we don't care about supporting systems with the old ABI

[bsdjhb]

I think we probably don't care about those systems at this point TBH.

[rwatson]

Agreed. I think our policy should probably be that we don’t support pre-22.05 releases at this point.