From: Szabolcs Nagy <nsz@port70.net>
To: enh <enh@google.com>
Cc: Rich Felker <dalias@libc.org>,
William Roberts <bill.c.roberts@gmail.com>,
musl@lists.openwall.com
Subject: Re: [musl] PAC/BTI Support on aarch64
Date: Thu, 15 Feb 2024 10:18:47 +0100 [thread overview]
Message-ID: <20240215091847.GB1884416@port70.net> (raw)
In-Reply-To: <CAJgzZopv1Pap2MHZ7-+3M8+4XE_RVsR8_kRa1=2fEcpXHtSBaw@mail.gmail.com>
* enh <enh@google.com> [2024-02-14 16:22:05 -0800]:
> On Wed, Feb 14, 2024 at 4:03 PM Szabolcs Nagy <nsz@port70.net> wrote:
> > i.e. no equivalent to -Wa,--noexecstack we use for GNU_STACK
> > (this was an oversight, llvm added an option, binutils gas has none).
>
> what's the option? (since Android only supports llvm, that might be
> worth considering as a slight cleanup for us...)
-mmark-bti-property
https://releases.llvm.org/16.0.0/tools/clang/docs/ClangCommandLineReference.html#cmdoption-clang-mmark-bti-property
https://reviews.llvm.org/D81930
> > as far as i know openssl is the reason android does not enable pac:
> > they added the hint instructions incorrectly at first so there are
> > binaries that fail if the hw enables pac.
>
> that was one reason why "android does not enable pac" _by default in
> the android target triples for app developers_, yes --- though i think
> we're at the point where we think we should flip that default (not
> least because the number of users whose devices would actually
> _benefit_ from the extra instructions is a lot larger now!):
> https://github.com/android/ndk/issues/1914
i see
next prev parent reply other threads:[~2024-02-15 9:19 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-12 16:38 William Roberts
2024-02-12 18:42 ` Rich Felker
2024-02-12 21:25 ` William Roberts
2024-02-12 21:34 ` enh
2024-02-12 22:46 ` Rich Felker
2024-02-12 23:05 ` enh
2024-02-12 23:18 ` William Roberts
2024-02-13 2:08 ` Rich Felker
2024-02-13 14:47 ` William Roberts
2024-02-13 17:51 ` Markus Wichmann
2024-02-14 2:19 ` Rich Felker
2024-02-14 3:19 ` William Roberts
2024-02-14 4:44 ` Markus Wichmann
2024-02-14 13:32 ` Thorsten Glaser
2024-02-14 14:03 ` Rich Felker
2024-02-14 14:12 ` Thorsten Glaser
2024-02-15 13:29 ` Stefan O'Rear
2024-02-15 14:06 ` Rich Felker
2024-03-02 14:33 ` Szabolcs Nagy
2024-03-02 14:45 ` Rich Felker
2024-02-15 0:03 ` Szabolcs Nagy
2024-02-15 0:22 ` enh
2024-02-15 9:18 ` Szabolcs Nagy [this message]
2024-02-19 23:54 ` Fangrui Song
[not found] ` <DS7PR12MB57659BC5D5536574D1B91D26CB502@DS7PR12MB5765.namprd12.prod.outlook.com>
2024-02-20 6:21 ` Anton Korobeynikov
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