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Re: [PATCH 03/14] add mach_host tests

From: Sergey Bugaev
Subject: Re: [PATCH 03/14] add mach_host tests
Date: Sat, 6 Jan 2024 22:43:03 +0300

On Sat, Jan 6, 2024 at 10:26 PM Luca <luca@orpolo.org> wrote:
> Uhm, I still have an issue, although a bit different now:
> By the way, the exception is still the same (General Protection, which
> is usually forwarded to user space), but for a different reason,
> apparently a non-canonical address in $rax=0x8000020175c0

I think this is just that you now have to add 2, not 1, to the result
of __builtin_frame_address().

Or better, do what I did in glibc, change it to an explicit function
argument [0], since __builtin_frame_address() doesn't return a useful
(for this purpose) value on aarch64.



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