diff --git a/src/arm.c b/src/arm.c
index 4cc609d..3cd6217 100644
--- a/src/arm.c
+++ b/src/arm.c
@@ -72,8 +72,8 @@ struct subarch_info subarches[] = {
  *
  * - CHECK_HWCAP and CHECK_HWCAP2 refer to appropriate values in 32-bit
  *   ARM AT_HWCAP*,
- * - CHECK_AARCH64_HWCAP refer to appropriate values in 64-bit AArch64
- *   AT_HWCAP,
+ * - CHECK_AARCH64_HWCAP and CHECK_HWCAP2 refer to appropriate values
+ *   in 64-bit AArch64 AT_HWCAP,
  * - CHECK_SUBARCH refers to the subarch determined via 'uname -m'.
  */
 enum check_type
@@ -83,6 +83,7 @@ enum check_type
 	CHECK_HWCAP,
 	CHECK_HWCAP2,
 	CHECK_AARCH64_HWCAP,
+	CHECK_AARCH64_HWCAP2,
 	CHECK_SUBARCH,
 
 	CHECK_MAX
@@ -106,6 +107,8 @@ struct flag_info flags[] = {
 	{ "vfpv3", CHECK_HWCAP, (1 << 13) },
 	{ "vfpv4", CHECK_HWCAP, (1 << 16) },
 	{ "vfp-d32", CHECK_HWCAP, (1 << 19) },
+	{ "asimddp", CHECK_HWCAP, (1 << 24) },
+	{ "i8mm", CHECK_HWCAP, (1 << 27) },
 	{ "aes", CHECK_HWCAP2, (1 << 0) },
 	{ "sha1", CHECK_HWCAP2, (1 << 2) },
 	{ "sha2", CHECK_HWCAP2, (1 << 3) },
@@ -125,6 +128,10 @@ struct flag_info flags[] = {
 	{ "sha1", CHECK_AARCH64_HWCAP, (1 << 5) },
 	{ "sha2", CHECK_AARCH64_HWCAP, (1 << 6) },
 	{ "crc32", CHECK_AARCH64_HWCAP, (1 << 7) },
+	{ "sm4", CHECK_AARCH64_HWCAP, (1 << 19) },
+	{ "asimddp", CHECK_AARCH64_HWCAP, (1 << 20) },
+	{ "sve", CHECK_AARCH64_HWCAP, (1 << 22) },
+	{ "i8mm", CHECK_AARCH64_HWCAP2, (1 << 13) },
 
 	/* subarches */
 	{ "v4", CHECK_SUBARCH, SUBARCH_V4 },
@@ -203,6 +210,10 @@ int print_flags()
 				if (subarch >= SUBARCH_AARCH64)
 					reg = &hwcap;
 				break;
+			case CHECK_AARCH64_HWCAP2:
+				if (subarch >= SUBARCH_AARCH64)
+					reg = &hwcap2;
+				break;
 			case CHECK_SUBARCH:
 				reg = &subarch;
 				break;
diff --git a/tests/arm/aarch64-neoverse-n1.txt b/tests/arm/aarch64-neoverse-n1.txt
index edff6e5..61cf087 100644
--- a/tests/arm/aarch64-neoverse-n1.txt
+++ b/tests/arm/aarch64-neoverse-n1.txt
@@ -1,4 +1,4 @@
-expected:edsp neon thumb vfp vfpv3 vfpv4 vfp-d32 aes sha1 sha2 crc32 v4 v5 v6 v7 v8 thumb2
+expected:edsp neon thumb vfp vfpv3 vfpv4 vfp-d32 aes sha1 sha2 crc32 asimddp v4 v5 v6 v7 v8 thumb2
 hwcap:0000000010119fff
 hwcap2:0000000000000000
 machine:aarch64