[PATCH 2/5] kselftest/arm64: add crc32 feature to hwcap test
Zeng Heng
zengheng4 at huawei.com
Mon Aug 7 23:13:52 PDT 2023
Add the CRC32 feature check in the set of hwcap tests.
Signed-off-by: Zeng Heng <zengheng4 at huawei.com>
---
tools/testing/selftests/arm64/abi/hwcap.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/tools/testing/selftests/arm64/abi/hwcap.c b/tools/testing/selftests/arm64/abi/hwcap.c
index eaf9881c2e43..7ea526e7934e 100644
--- a/tools/testing/selftests/arm64/abi/hwcap.c
+++ b/tools/testing/selftests/arm64/abi/hwcap.c
@@ -33,6 +33,12 @@
*/
typedef void (*sigill_fn)(void);
+static void crc32_sigill(void)
+{
+ /* CRC32W W0, W0, W1 */
+ asm volatile(".inst 0x1ac14800" : : : );
+}
+
static void cssc_sigill(void)
{
/* CNT x0, x0 */
@@ -234,6 +240,13 @@ static const struct hwcap_data {
sigill_fn sigill_fn;
bool sigill_reliable;
} hwcaps[] = {
+ {
+ .name = "CRC32",
+ .at_hwcap = AT_HWCAP,
+ .hwcap_bit = HWCAP_CRC32,
+ .cpuinfo = "crc32",
+ .sigill_fn = crc32_sigill,
+ },
{
.name = "CSSC",
.at_hwcap = AT_HWCAP2,
--
2.25.1
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