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Message-ID: <CAFdMc-1rLPk2H0Pq5o7HQRd0XTWCxm8CrhwaSHkALaM2jxDHLw@mail.gmail.com>
Date: Tue, 25 May 2021 21:12:01 -0300
From: Daniel Gutson <danielgutson@...il.com>
To: musl@...ts.openwall.com
Subject: Re: Intel CET Support
El mar., 25 may. 2021 8:00 p. m., Joao Moreira <joao@...rdrivepizza.com>
escribió:
> Hi,
>
> Long ago I sent some patches here to enable CET support within MUSL
> (https://www.openwall.com/lists/musl/2020/10/19/3).
>
Did you intentionally remove the : in the label?
If not, does this assembly without errors? How did you test this?
@@ -49,7 +52,8 @@ feclearexcept:
.global feraiseexcept
.type feraiseexcept,@function
-feraiseexcept:
+feraiseexcept
+ ENDBRANCH32
> These patches were a result from some experiment I have been running
> with clang, and to which I needed a suitable library. I understand that
> the patches were not in their best shape, and I was a bit busy at the
> time so I didn't really push this through.
>
> Either way, I'm now wondering if there is any interest from MUSL to
> support CET. If yes, I can start working on an updated patch-set to be
> sent here eventually.
>
> Additionally, if the support is of interest, it would also be
> interesting to know if MUSL intends to support CET as specified in the
> X86-64 ABI (where a single linked DSO without the CET bits set disables
> the feature) or if you have something different in mind.
>
> Tks,
> Joao.
>
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