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[-next,4/4] kselftest/arm64: add jscvt feature to hwcap test

Message ID 20230814021747.1784812-5-zengheng4@huawei.com
State Accepted
Commit fcb0b51a5dca1f69f408dfe5fd970cf167d41538
Headers show
Series kselftest/arm64: Add crypto-related feature checks to hwcap test | expand

Commit Message

Zeng Heng Aug. 14, 2023, 2:17 a.m. UTC 
Add the jscvt feature check in the set of hwcap tests.

Due to the requirement of jscvt feature, a compiler configuration
of v8.3 or above is needed to support assembly. Therefore, hand
encode is used here instead.

Signed-off-by: Zeng Heng <zengheng4@huawei.com>
---
 tools/testing/selftests/arm64/abi/hwcap.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)
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Patch

diff --git a/tools/testing/selftests/arm64/abi/hwcap.c b/tools/testing/selftests/arm64/abi/hwcap.c
index c8444f25e52d..44da28043579 100644
--- a/tools/testing/selftests/arm64/abi/hwcap.c
+++ b/tools/testing/selftests/arm64/abi/hwcap.c
@@ -68,6 +68,12 @@  static void ilrcpc_sigill(void)
 	asm volatile(".inst 0x994083e0" : : : );
 }
 
+static void jscvt_sigill(void)
+{
+	/* FJCVTZS W0, D0 */
+	asm volatile(".inst 0x1e7e0000" : : : );
+}
+
 static void lrcpc_sigill(void)
 {
 	/* LDAPR W0, [SP, #0] */
@@ -320,6 +326,13 @@  static const struct hwcap_data {
 		.cpuinfo = "fp",
 		.sigill_fn = fp_sigill,
 	},
+	{
+		.name = "JSCVT",
+		.at_hwcap = AT_HWCAP,
+		.hwcap_bit = HWCAP_JSCVT,
+		.cpuinfo = "jscvt",
+		.sigill_fn = jscvt_sigill,
+	},
 	{
 		.name = "LRCPC",
 		.at_hwcap = AT_HWCAP,