1 /* Check __ppc_get_timebase() for architecture changes
2 Copyright (C) 2012-2021 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19 /* Test if __ppc_get_timebase() is compatible with the current processor and if
20 it's changing between reads. A read failure might indicate a Power ISA or
21 binutils change. */
22
23 #include <inttypes.h>
24 #include <stdio.h>
25 #include <stdint.h>
26
27 #include <sys/platform/ppc.h>
28
29 static int
do_test(void)30 do_test (void)
31 {
32 uint64_t t1, t2, t3;
33 t1 = __ppc_get_timebase ();
34 printf ("Time Base = %"PRIu64"\n", t1);
35 t2 = __ppc_get_timebase ();
36 printf ("Time Base = %"PRIu64"\n", t2);
37 t3 = __ppc_get_timebase ();
38 printf ("Time Base = %"PRIu64"\n", t3);
39 if (t1 != t2 && t1 != t3 && t2 != t3)
40 return 0;
41
42 printf ("Fail: timebase reads should always be different.\n");
43 return 1;
44 }
45
46 #include <support/test-driver.c>
47