From: Richard Sandiford <richard.sandiford@arm.com>
To: gcc-patches@gcc.gnu.org
Subject: [PATCH] wwwdocs: Document ShadowCallStack support
Date: Tue, 22 Feb 2022 10:11:06 +0000 [thread overview]
Message-ID: <mpto82zgqit.fsf@arm.com> (raw)
Document ShadowCallStack support. The option link doesn't work yet
of course, but I checked that it works with gcc-12.1.0/ removed.
OK to install?
Thanks,
Richard
---
htdocs/gcc-12/changes.html | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/htdocs/gcc-12/changes.html b/htdocs/gcc-12/changes.html
index b6341fda..216ee0b6 100644
--- a/htdocs/gcc-12/changes.html
+++ b/htdocs/gcc-12/changes.html
@@ -96,6 +96,17 @@ a work-in-progress.</p>
Note that default vectorizer cost model has been changed which used to behave
as <code>-fvect-cost-model=cheap</code> were specified.
</li>
+ <li>
+ GCC now supports the
+ <a href="https://clang.llvm.org/docs/ShadowCallStack.html">
+ ShadowCallStack</a> sanitizer, which can be enabled using the
+ command-line option
+ <a href="https://gcc.gnu.org/onlinedocs/gcc-12.1.0/gcc/Instrumentation-Options.html#index-fsanitize_003dshadow-call-stack">
+ <code>-fshadow-call-stack</code></a>. This sanitizer currently
+ only works on AArch64 targets and it requires an environment in
+ which all code has been compiled with <code>-ffixed-r18</code>.
+ Its primary initial user is the Linux kernel.
+ </li>
</ul>
<!-- .................................................................. -->
--
2.25.1
next reply other threads:[~2022-02-22 10:11 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-22 10:11 Richard Sandiford [this message]
2022-02-22 10:26 ` Jakub Jelinek
2022-02-22 10:52 ` Richard Sandiford
2022-02-23 6:31 ` Gerald Pfeifer
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