[PATCH v2] kselftest/arm64: add RCpc load-acquire to hwcap test

[Zeng Heng]

Add the RCpc and various features check in the set of hwcap tests.

Signed-off-by: Zeng Heng <zengheng4 at huawei.com>
---
v1 -> v2:
 - sort features by name

 tools/testing/selftests/arm64/abi/hwcap.c | 26 +++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/tools/testing/selftests/arm64/abi/hwcap.c b/tools/testing/selftests/arm64/abi/hwcap.c
index d4ad813fed10..6a0adf916028 100644
--- a/tools/testing/selftests/arm64/abi/hwcap.c
+++ b/tools/testing/selftests/arm64/abi/hwcap.c
@@ -39,6 +39,18 @@ static void cssc_sigill(void)
 	asm volatile(".inst 0xdac01c00" : : : "x0");
 }

+static void ilrcpc_sigill(void)
+{
+	/* LDAPUR W0, [SP, #8] */
+	asm volatile(".inst 0x994083e0" : : : );
+}
+
+static void lrcpc_sigill(void)
+{
+	/* LDAPR W0, [SP, #0] */
+	asm volatile(".inst 0xb8bfc3e0" : : : );
+}
+
 static void mops_sigill(void)
 {
 	char dst[1], src[1];
@@ -223,6 +235,20 @@ static const struct hwcap_data {
 		.cpuinfo = "cssc",
 		.sigill_fn = cssc_sigill,
 	},
+	{
+		.name = "LRCPC",
+		.at_hwcap = AT_HWCAP,
+		.hwcap_bit = HWCAP_LRCPC,
+		.cpuinfo = "lrcpc",
+		.sigill_fn = lrcpc_sigill,
+	},
+	{
+		.name = "LRCPC2",
+		.at_hwcap = AT_HWCAP,
+		.hwcap_bit = HWCAP_ILRCPC,
+		.cpuinfo = "ilrcpc",
+		.sigill_fn = ilrcpc_sigill,
+	},
 	{
 		.name = "MOPS",
 		.at_hwcap = AT_HWCAP2,
--
2.25.1