[PATCH] aarch64: Enable +cssc for armv8.9-a

[Andrew Carlotti]

FEAT_CSSC is mandatory in the architecture from Armv8.9.

---

OK for master and backport to 2.42 branch?


diff --git a/gas/testsuite/gas/aarch64/cssc.d b/gas/testsuite/gas/aarch64/cssc.d
index d41df24b916d26b0c71ad0435f3e83090268e4e7..f6ff9d207a2fd876793ac3769e87b524201d8cbb 100644
--- a/gas/testsuite/gas/aarch64/cssc.d
+++ b/gas/testsuite/gas/aarch64/cssc.d
@@ -1,5 +1,6 @@
 #name: CSSC extension
 #as: -march=armv8-a+cssc
+#as: -march=armv8.9-a
 #objdump: -dr
 
 .*:     file format .*
diff --git a/include/opcode/aarch64.h b/include/opcode/aarch64.h
index 2fca9528c2012be983c2414a30fa5930e57e5c92..2d327e830497945cd691754176e4130e30ede492 100644
--- a/include/opcode/aarch64.h
+++ b/include/opcode/aarch64.h
@@ -291,6 +291,7 @@ enum aarch64_feature_bit {
 					 | AARCH64_FEATBIT (X, MOPS)	\
 					 | AARCH64_FEATBIT (X, HBC))
 #define AARCH64_ARCH_V8_9A_FEATURES(X)	(AARCH64_FEATBIT (X, V8_9A)	\
+					 | AARCH64_FEATBIT (X, CSSC) \
 					 | AARCH64_FEATBIT (X, SPEv1p4) \
 					 | AARCH64_FEATBIT (X, SPE_CRR)	\
 					 | AARCH64_FEATBIT (X, SPE_FDS) \