commit 640b761e49ab20a7ad6347262fb70dfde6b689e3
author Tom Cosgrove <tom.cosgrove@arm.com> Sun Mar 19 15:07:06 2023 +0000
committer Tom Cosgrove <tom.cosgrove@arm.com> Sun Mar 19 15:07:06 2023 +0000
tree 69ec425ecc4fe6398ba06c4ece039e7ea2a8b52e
parent 2c942a35ff7bf5d8be58cbf5f3321dd938b96b85

Print out AESNI mechanism used by GCM in self-test

Signed-off-by: Tom Cosgrove <tom.cosgrove@arm.com>

library/gcm.c

diff --git a/library/gcm.c b/library/gcm.c
index 5994cf6..0c958c7 100644
--- a/library/gcm.c
+++ b/library/gcm.c
@@ -760,7 +760,15 @@
 #else /* MBEDTLS_GCM_ALT */
 #if defined(MBEDTLS_AESNI_HAVE_CODE)
         if (mbedtls_aesni_has_support(MBEDTLS_AESNI_CLMUL)) {
-            mbedtls_printf("  GCM note: using AESNI.\n");
+            mbedtls_printf("  GCM note: using AESNI via ");
+#if MBEDTLS_AESNI_HAVE_CODE == 1
+            mbedtls_printf("assembly");
+#elif MBEDTLS_AESNI_HAVE_CODE == 2
+            mbedtls_printf("intrinsics");
+#else
+            mbedtls_printf("(unknown)");
+#endif
+            mbedtls_printf(".\n");
         } else
 #endif
         mbedtls_printf("  GCM note: built-in implementation.\n");