From: "Reed Weichler" <rweichler@gmail.com>
To: libffi-discuss@sourceware.org
Subject: Is arm64e supported?
Date: Mon, 20 May 2019 23:13:00 -0000 [thread overview]
Message-ID: <jvwzfrb0.7d66b417-ab51-4c1b-a1a8-1d19f7d476c6@we.are.superhuman.com> (raw)
Hi. I was wondering if arm64e was supported. And if not, are there plans for supporting it?
For the uninitiated, arm64e is the new architecture shipped with the iPhone XS and iPhone Xr.
https://community.arm.com/developer/ip-products/processors/b/processors-ip-blog/posts/armv8-a-architecture-2016-additions
https://developer.apple.com/documentation/security/preparing_your_app_to_work_with_pointer_authentication
tl;dr is it signs the high-order bits of pointers for security. Code compiled for Apple arm64 does not run on arm64e devices.
reply other threads:[~2019-05-20 23:13 UTC|newest]
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