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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2021 ARM Limited
*
* Verify that using an instruction not supported in streaming mode
* traps when in streaming mode.
*/
#include <signal.h>
#include <ucontext.h>
#include <sys/prctl.h>
#include "test_signals_utils.h"
#include "testcases.h"
int sme_trap_non_streaming_trigger(struct tdescr *td)
{
/*
* The framework will handle SIGILL so we need to exit SM to
* stop any other code triggering a further SIGILL down the
* line from using a streaming-illegal instruction.
*/
asm volatile(".inst 0xd503437f; /* SMSTART ZA */ \
cnt v0.16b, v0.16b; \
.inst 0xd503447f /* SMSTOP ZA */");
return 0;
}
int sme_trap_non_streaming_run(struct tdescr *td, siginfo_t *si, ucontext_t *uc)
{
return 1;
}
struct tdescr tde = {
.name = "SME SM trap unsupported instruction",
.descr = "Check that we get a SIGILL if we use an unsupported instruction in streaming mode",
.feats_required = FEAT_SME,
.feats_incompatible = FEAT_SME_FA64,
.timeout = 3,
.sanity_disabled = true,
.trigger = sme_trap_non_streaming_trigger,
.run = sme_trap_non_streaming_run,
.sig_ok = SIGILL,
};
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