Commit a985fe63 authored by Thomas Weißschuh's avatar Thomas Weißschuh Committed by Will Deacon
Browse files

kselftest/arm64/gcs: Use nolibc's getauxval() 



Nolibc now does have getauxval(), use it.

Signed-off-by: default avatarThomas Weißschuh <linux@weissschuh.net>
Reviewed-by: default avatarMark Brown <broonie@kernel.org>
Signed-off-by: default avatarWill Deacon <will@kernel.org>
parent 740cdafd

tools/testing/selftests/arm64/gcs/basic-gcs.c

+5 −5
Original line number Diff line number Diff line
@@ -10,6 +10,7 @@ 


#include <sys/mman.h>

#include <asm/mman.h>

#include <asm/hwcap.h>

#include <linux/sched.h>



#include "kselftest.h"
@@ -386,14 +387,13 @@ int main(void) 


	ksft_print_header();



	/*

	 * We don't have getauxval() with nolibc so treat a failure to

	 * read GCS state as a lack of support and skip.

	 */

	if (!(getauxval(AT_HWCAP) & HWCAP_GCS))

		ksft_exit_skip("SKIP GCS not supported\n");



	ret = my_syscall5(__NR_prctl, PR_GET_SHADOW_STACK_STATUS,

			  &gcs_mode, 0, 0, 0);

	if (ret != 0)

		ksft_exit_skip("Failed to read GCS state: %d\n", ret);

		ksft_exit_fail_msg("Failed to read GCS state: %d\n", ret);



	if (!(gcs_mode & PR_SHADOW_STACK_ENABLE)) {

		gcs_mode = PR_SHADOW_STACK_ENABLE;