pcc added a comment.
In D98529#2631946 <https://reviews.llvm.org/D98529#2631946>, @DavidSpickett
wrote:
> TCR_ELx begins at 1 (see `D13.2.123 TCR_EL1, Translation Control Register
> (EL1)` in the armarm) and covers EL0 and 1. Looking at the pseudocode access
> to this is undefined at EL0.
>
> So the OS would have to provide you some other way to read that, I know this
> is missing on Linux at the moment. A user setting might be good for us
> supporting Linux too. (though I realise your immediate concern is MacOS)
On Linux you can query the NT_ARM_PAC_MASK regset and examine the insn_mask
field of the result.
Note that this is a mask rather than the number of bits as this also allows
reflecting whether TBI{,D}0 was set at execution time. I would suggest using a
mask in any persisted storage format.
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D98529/new/
https://reviews.llvm.org/D98529
_______________________________________________
lldb-commits mailing list
lldb-commits@lists.llvm.org
https://lists.llvm.org/cgi-bin/mailman/listinfo/lldb-commits
