1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright (C) 2021 ARM Limited
4 *
5 * Verify that using an instruction not supported in streaming mode
6 * traps when in streaming mode.
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
16static union {
17	ucontext_t uc;
18	char buf[1024 * 128];
19} context;
20
21int zt_no_regs_run(struct tdescr *td, siginfo_t *si, ucontext_t *uc)
22{
23	size_t offset;
24	struct _aarch64_ctx *head = GET_BUF_RESV_HEAD(context);
25
26	/*
27	 * Get a signal context which should not have a ZT frame and
28	 * registers in it.
29	 */
30	if (!get_current_context(td, &context.uc, sizeof(context)))
31		return 1;
32
33	head = get_header(head, ZT_MAGIC, GET_BUF_RESV_SIZE(context), &offset);
34	if (head) {
35		fprintf(stderr, "Got unexpected ZT context\n");
36		return 1;
37	}
38
39	td->pass = 1;
40
41	return 0;
42}
43
44struct tdescr tde = {
45	.name = "ZT register data not present",
46	.descr = "Validate that ZT is not present when ZA is disabled",
47	.feats_required = FEAT_SME2,
48	.timeout = 3,
49	.sanity_disabled = true,
50	.run = zt_no_regs_run,
51};
52