This feature has no traps associated with it so the SIGILL is not reliable.
Signed-off-by: Mark Brown broonie@kernel.org --- tools/testing/selftests/arm64/abi/hwcap.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+)
diff --git a/tools/testing/selftests/arm64/abi/hwcap.c b/tools/testing/selftests/arm64/abi/hwcap.c index 002ec38a8bbb..0f9a64932481 100644 --- a/tools/testing/selftests/arm64/abi/hwcap.c +++ b/tools/testing/selftests/arm64/abi/hwcap.c @@ -17,6 +17,8 @@ #include <asm/sigcontext.h> #include <asm/unistd.h>
+#include <linux/auxvec.h> + #include "../../kselftest.h"
#define TESTS_PER_HWCAP 3 @@ -169,6 +171,18 @@ static void lse128_sigill(void) : "cc", "memory"); }
+static void lsfe_sigill(void) +{ + float __attribute__ ((aligned (16))) mem; + register float *memp asm ("x0") = &mem; + + /* STFADD H0, [X0] */ + asm volatile(".inst 0x7c20801f" + : "+r" (memp) + : + : "memory"); +} + static void lut_sigill(void) { /* LUTI2 V0.16B, { V0.16B }, V[0] */ @@ -762,6 +776,13 @@ static const struct hwcap_data { .cpuinfo = "lse128", .sigill_fn = lse128_sigill, }, + { + .name = "LSFE", + .at_hwcap = AT_HWCAP3, + .hwcap_bit = HWCAP3_LSFE, + .cpuinfo = "lsfe", + .sigill_fn = lsfe_sigill, + }, { .name = "LUT", .at_hwcap = AT_HWCAP2,