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 
16 int 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 
24 int sme_trap_no_sm_run(struct tdescr *td, siginfo_t *si, ucontext_t *uc)
25 {
26 	return 1;
27 }
28 
29 struct 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 };
39