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4963aeb35a
Add test cases for the SME signal handing ABI patterned off the SVE tests. Due to the small size of the tests and the differences in ABI (especially around needing to account for both streaming SVE and ZA) there is some code duplication here. We currently cover: - Reporting of the vector length. - Lack of support for changing vector length. - Presence and size of register state for streaming SVE and ZA. As with the SVE tests we do not yet have any validation of register contents. Signed-off-by: Mark Brown <broonie@kernel.org> Reviewed-by: Shuah Khan <skhan@linuxfoundation.org> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Link: https://lore.kernel.org/r/20220419112247.711548-36-broonie@kernel.org Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
69 lines
1.3 KiB
C
69 lines
1.3 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 2021 ARM Limited
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*
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* Check that the SME vector length reported in signal contexts is the
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* expected one.
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*/
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#include <signal.h>
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#include <ucontext.h>
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#include <sys/prctl.h>
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#include "test_signals_utils.h"
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#include "testcases.h"
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struct fake_sigframe sf;
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unsigned int vl;
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static bool get_sme_vl(struct tdescr *td)
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{
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int ret = prctl(PR_SME_GET_VL);
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if (ret == -1)
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return false;
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vl = ret;
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return true;
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}
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static int sme_vl(struct tdescr *td, siginfo_t *si, ucontext_t *uc)
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{
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size_t resv_sz, offset;
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struct _aarch64_ctx *head = GET_SF_RESV_HEAD(sf);
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struct za_context *za;
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/* Get a signal context which should have a ZA frame in it */
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if (!get_current_context(td, &sf.uc))
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return 1;
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resv_sz = GET_SF_RESV_SIZE(sf);
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head = get_header(head, ZA_MAGIC, resv_sz, &offset);
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if (!head) {
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fprintf(stderr, "No ZA context\n");
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return 1;
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}
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za = (struct za_context *)head;
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if (za->vl != vl) {
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fprintf(stderr, "ZA sigframe VL %u, expected %u\n",
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za->vl, vl);
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return 1;
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} else {
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fprintf(stderr, "got expected VL %u\n", vl);
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}
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td->pass = 1;
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return 0;
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}
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struct tdescr tde = {
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.name = "SME VL",
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.descr = "Check that we get the right SME VL reported",
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.feats_required = FEAT_SME,
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.timeout = 3,
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.init = get_sme_vl,
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.run = sme_vl,
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};
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