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authorbors <bors@rust-lang.org>2025-09-24 13:04:19 +0000
committerbors <bors@rust-lang.org>2025-09-24 13:04:19 +0000
commit15283f6fe95e5b604273d13a428bab5fc0788f5a (patch)
tree0dc36ced16f62c9c3445da41a4d9866ff73b3071 /src/doc/unstable-book
parente9385f9eea0221ef295a188d49d16f8f5189abf1 (diff)
parent08020def99d2851af0dabde12cc6d203017fa72c (diff)
downloadrust-15283f6fe95e5b604273d13a428bab5fc0788f5a.tar.gz
rust-15283f6fe95e5b604273d13a428bab5fc0788f5a.zip
Auto merge of #146338 - CrooseGit:dev/reucru01/AArch64-enable-GCS, r=Urgau,davidtwco
Extends AArch64 branch protection support to include GCS

Extends existing support for AArch64 branch protection to include support for [Guarded Control Stacks](https://community.arm.com/arm-community-blogs/b/architectures-and-processors-blog/posts/arm-a-profile-architecture-2022#guarded-control-stack-gcs:~:text=Extraction%20or%20tracking.-,Guarded%20Control%20Stack%20(GCS),-With%20the%202022).
Diffstat (limited to 'src/doc/unstable-book')
-rw-r--r--src/doc/unstable-book/src/compiler-flags/branch-protection.md1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/doc/unstable-book/src/compiler-flags/branch-protection.md b/src/doc/unstable-book/src/compiler-flags/branch-protection.md
index f0cc44a07f3..c15567dcac2 100644
--- a/src/doc/unstable-book/src/compiler-flags/branch-protection.md
+++ b/src/doc/unstable-book/src/compiler-flags/branch-protection.md
@@ -13,6 +13,7 @@ It takes some combination of the following values, separated by a `,`.
 - `leaf` - Enable pointer authentication for all functions, including leaf functions.
 - `b-key` - Sign return addresses with key B, instead of the default key A.
 - `bti` - Enable branch target identification.
+- `gcs` - Enable guarded control stack support.
 
 `leaf`, `b-key` and `pc` are only valid if `pac-ret` was previously specified.
 For example, `-Z branch-protection=bti,pac-ret,leaf` is valid, but