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kselftest/arm64: Add lsfe to the hwcaps test

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This feature has no traps associated with it so the SIGILL is not reliable.

Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Mark Brown 2025-09-18 20:42:07 +01:00 committed by Will Deacon
parent 09b5febf84
commit 777fb19ed8
1 changed files with 21 additions and 0 deletions
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21
tools/testing/selftests/arm64/abi/hwcap.c
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@ -17,6 +17,8 @@
#include <asm/sigcontext.h>
#include <asm/unistd.h>
#include <linux/auxvec.h>
#include "../../kselftest.h"
#define TESTS_PER_HWCAP 3
@ -168,6 +170,18 @@ 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] */
@ -761,6 +775,13 @@ 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,