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
16 static union {
17 ucontext_t uc;
18 char buf[1024 * 128];
19 } context;
20
21 int 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
44 struct 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
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