sme_trap_no_sm.c

 1// SPDX-License-Identifier: GPL-2.0
 2/*
 3 * Copyright (C) 2021 ARM Limited
 4 *
 5 * Verify that using a streaming mode instruction without enabling it
 6 * generates a SIGILL.
 7 */
 8
 9#include <signal.h>
10#include <ucontext.h>
11#include <sys/prctl.h>
12
13#include "test_signals_utils.h"
14#include "testcases.h"
15
16int sme_trap_no_sm_trigger(struct tdescr *td)
17{
18	/* SMSTART ZA ; ADDHA ZA0.S, P0/M, P0/M, Z0.S */
19	asm volatile(".inst 0xd503457f ; .inst 0xc0900000");
20
21	return 0;
22}
23
24int sme_trap_no_sm_run(struct tdescr *td, siginfo_t *si, ucontext_t *uc)
25{
26	return 1;
27}
28
29struct tdescr tde = {
30	.name = "SME trap without SM",
31	.descr = "Check that we get a SIGILL if we use streaming mode without enabling it",
32	.timeout = 3,
33	.feats_required = FEAT_SME,   /* We need a SMSTART ZA */
34	.sanity_disabled = true,
35	.trigger = sme_trap_no_sm_trigger,
36	.run = sme_trap_no_sm_run,
37	.sig_ok = SIGILL,
38};