Commit 777fb19e authored by Mark Brown's avatar Mark Brown Committed by Will Deacon
Browse files

kselftest/arm64: Add lsfe to the hwcaps test 



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

Signed-off-by: default avatarMark Brown <broonie@kernel.org>
Signed-off-by: default avatarWill Deacon <will@kernel.org>
parent 09b5febf

tools/testing/selftests/arm64/abi/hwcap.c

+21 −0
Original line number Diff line number Diff line
@@ -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,