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, sizeof(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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