diff mbox series

[v2,15/21] aarch64: Emit GNU property NOTE for GCS

Message ID 20241031132323.948159-16-yury.khrustalev@arm.com
State New
Headers show
Series aarch64: Add support for Guarded Control Stack extension | expand

Commit Message

Yury Khrustalev Oct. 31, 2024, 1:23 p.m. UTC 
From: Szabolcs Nagy <szabolcs.nagy@arm.com>

gcc/ChangeLog:

	* config/aarch64/aarch64.cc (GNU_PROPERTY_AARCH64_FEATURE_1_GCS):
	Define.
	(aarch64_file_end_indicate_exec_stack): Set GCS property bit.
---
 gcc/config/aarch64/aarch64.cc | 5 +++++
 1 file changed, 5 insertions(+)
diff mbox series

Patch

diff --git a/gcc/config/aarch64/aarch64.cc b/gcc/config/aarch64/aarch64.cc
index f87ec2e43b5..88c7482efe0 100644
--- a/gcc/config/aarch64/aarch64.cc
+++ b/gcc/config/aarch64/aarch64.cc
@@ -29370,6 +29370,7 @@  aarch64_can_tag_addresses ()
 #define GNU_PROPERTY_AARCH64_FEATURE_1_AND	0xc0000000
 #define GNU_PROPERTY_AARCH64_FEATURE_1_BTI	(1U << 0)
 #define GNU_PROPERTY_AARCH64_FEATURE_1_PAC	(1U << 1)
+#define GNU_PROPERTY_AARCH64_FEATURE_1_GCS	(1U << 2)
 void
 aarch64_file_end_indicate_exec_stack ()
 {
@@ -29382,6 +29383,9 @@  aarch64_file_end_indicate_exec_stack ()
   if (aarch_ra_sign_scope != AARCH_FUNCTION_NONE)
     feature_1_and |= GNU_PROPERTY_AARCH64_FEATURE_1_PAC;
 
+  if (aarch64_gcs_enabled ())
+    feature_1_and |= GNU_PROPERTY_AARCH64_FEATURE_1_GCS;
+
   if (feature_1_and)
     {
       /* Generate .note.gnu.property section.  */
@@ -29413,6 +29417,7 @@  aarch64_file_end_indicate_exec_stack ()
       assemble_align (POINTER_SIZE);
     }
 }
+#undef GNU_PROPERTY_AARCH64_FEATURE_1_GCS
 #undef GNU_PROPERTY_AARCH64_FEATURE_1_PAC
 #undef GNU_PROPERTY_AARCH64_FEATURE_1_BTI
 #undef GNU_PROPERTY_AARCH64_FEATURE_1_AND