mirror of git://sourceware.org/git/glibc.git
102 lines
2.5 KiB
C
102 lines
2.5 KiB
C
/* Template for SME tests.
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Copyright (C) 2025 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <stdio.h>
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#include <stddef.h>
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#include <stdint.h>
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#include <string.h>
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#include <sys/auxv.h>
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#include <support/check.h>
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#include <support/support.h>
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#include <support/xstdlib.h>
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#include <support/xunistd.h>
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#include <support/test-driver.h>
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#include "tst-sme-helper.h"
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/* Streaming SVE vector register size. */
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static unsigned long svl;
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static uint8_t *state;
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static void
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enable_sme_za_state (struct blk *blk)
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{
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start_za ();
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set_tpidr2 (blk);
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load_za (blk, svl);
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}
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/* Check if SME state is disabled (when CLEAR is true) or
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enabled (when CLEAR is false). */
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static void
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check_sme_za_state (const char msg[], bool clear)
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{
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unsigned long svcr = get_svcr ();
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void *tpidr2 = get_tpidr2 ();
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printf ("[%s]\n", msg);
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printf ("svcr = %016lx\n", svcr);
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printf ("tpidr2 = %016lx\n", (unsigned long)tpidr2);
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if (clear)
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{
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TEST_VERIFY (svcr == 0);
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TEST_VERIFY (tpidr2 == NULL);
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}
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else
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{
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TEST_VERIFY (svcr != 0);
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TEST_VERIFY (tpidr2 != NULL);
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}
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}
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/* Should be defined in actual test that includes this
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skeleton file. */
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static void
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run (struct blk *ptr);
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static int
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do_test (void)
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{
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unsigned long hwcap2 = getauxval (AT_HWCAP2);
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if ((hwcap2 & HWCAP2_SME) == 0)
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return EXIT_UNSUPPORTED;
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/* Get current streaming SVE vector length in bytes. */
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svl = get_svl ();
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printf ("svl: %lu\n", svl);
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TEST_VERIFY_EXIT (!(svl < 16 || svl % 16 != 0 || svl >= (1 << 16)));
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/* Initialise buffer for ZA state of SME. */
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state = xmalloc (svl * svl);
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memset (state, 1, svl * svl);
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struct blk blk = {
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.za_save_buffer = state,
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.num_za_save_slices = svl,
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.__reserved = {0},
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};
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run (&blk);
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free (state);
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return 0;
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}
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#include <support/test-driver.c>
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