[gcc(refs/vendors/ARM/heads/gcs-13)] aarch64: libgcc: add GCS marking to asm

[gcc(refs/vendors/ARM/heads/gcs-13)] aarch64: libgcc: add GCS marking to asm

[Szabolcs Nagy]

https://gcc.gnu.org/g:d2e8c29fa826c8372d131a32ac7ef87f1b80138a

commit d2e8c29fa826c8372d131a32ac7ef87f1b80138a
Author: Szabolcs Nagy <szabolcs.nagy@arm.com>
Date:   Fri Dec 22 13:44:19 2023 +0000

    aarch64: libgcc: add GCS marking to asm
    
    libgcc/ChangeLog:
    
            * config/aarch64/aarch64-asm.h (FEATURE_1_GCS): Define.
            (GCS_FLAG): Define if GCS is enabled.
            (GNU_PROPERTY): Add GCS_FLAG.

Diff:
---
 libgcc/config/aarch64/aarch64-asm.h | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/libgcc/config/aarch64/aarch64-asm.h b/libgcc/config/aarch64/aarch64-asm.h
index 3257a3193e74..dc68e295c6c6 100644
--- a/libgcc/config/aarch64/aarch64-asm.h
+++ b/libgcc/config/aarch64/aarch64-asm.h
@@ -38,6 +38,7 @@
 #define FEATURE_1_AND 0xc0000000
 #define FEATURE_1_BTI 1
 #define FEATURE_1_PAC 2
+#define FEATURE_1_GCS 4
 
 /* Supported features based on the code generation options.  */
 #if defined(__ARM_FEATURE_BTI_DEFAULT)
@@ -58,6 +59,12 @@
 # define AUTIASP
 #endif
 
+#if __ARM_FEATURE_GCS_DEFAULT
+# define GCS_FLAG FEATURE_1_GCS
+#else
+# define GCS_FLAG 0
+#endif
+
 #ifdef __ELF__
 #define HIDDEN(name) .hidden name
 #define SYMBOL_SIZE(name) .size name, .-name
@@ -88,8 +95,8 @@
 .previous
 
 /* Add GNU property note if built with branch protection.  */
-# if (BTI_FLAG|PAC_FLAG) != 0
-GNU_PROPERTY (FEATURE_1_AND, BTI_FLAG|PAC_FLAG)
+# if (BTI_FLAG|PAC_FLAG|GCS_FLAG) != 0
+GNU_PROPERTY (FEATURE_1_AND, BTI_FLAG|PAC_FLAG|GCS_FLAG)
 # endif
 #endif