Re: [PATCH][BINUTILS][AARCH64] Add support for pointer authentication B key

[Ramana Radhakrishnan <ramana dot gcc at googlemail dot com>]

On Fri, Nov 9, 2018 at 2:03 PM Sam Tebbs <Sam.Tebbs@arm.com> wrote:
>
> On 11/09/2018 01:27 PM, Nick Clifton wrote:
>
> > Hi Sam,
>
> Hi Nick, thanks for the feedback.
>
> >> The DWARF extensions for ARM therefore
> >> propose to add a new augmentation character 'B' to the CIE augmentation string
> >> and the corresponding cfi directive ".cfi_b_key_frame".
> > Are these extensions documented somewhere ?  And is the documentation referenced
> > in the source code so that readers can find the description ?
> >
>
> There is no public documentation for this approach as it was agreed upon
> internally with those implementing support in LLVM. I have documented
> this in gas/doc/c-aarch64.texi, would you like me to refer to that
> section from the relevant source code?

I believe this will be documented in the upcoming Dwarf supplement for AArch64.

regards
Ramana