From patchwork Tue Feb 22 10:11:06 2022
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X-Patchwork-Submitter: Richard Sandiford
X-Patchwork-Id: 51284
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To: gcc-patches@gcc.gnu.org
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richard.sandiford@arm.com
Subject: [PATCH] wwwdocs: Document ShadowCallStack support
Date: Tue, 22 Feb 2022 10:11:06 +0000
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From: Richard Sandiford
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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.
Note that default vectorizer cost model has been changed which used to behave
as -fvect-cost-model=cheap
were specified.
+
+ GCC now supports the
+
+ ShadowCallStack sanitizer, which can be enabled using the
+ command-line option
+
+ -fshadow-call-stack
. This sanitizer currently
+ only works on AArch64 targets and it requires an environment in
+ which all code has been compiled with -ffixed-r18
.
+ Its primary initial user is the Linux kernel.
+