]>
Commit | Line | Data |
---|---|---|
a960d5f9 TJB |
1 | /* This testcase is part of GDB, the GNU debugger. |
2 | ||
1d506c26 | 3 | Copyright 2022-2024 Free Software Foundation, Inc. |
a960d5f9 TJB |
4 | |
5 | This program is free software; you can redistribute it and/or modify | |
6 | it under the terms of the GNU General Public License as published by | |
7 | the Free Software Foundation; either version 3 of the License, or | |
8 | (at your option) any later version. | |
9 | ||
10 | This program 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 | |
13 | GNU General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
16 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
17 | ||
18 | /* Exercise AArch64's Scalable Vector Extension. | |
19 | ||
20 | This test was based on QEMU's sve-ioctls.c test file. */ | |
21 | ||
22 | #include <stdio.h> | |
23 | #include <sys/auxv.h> | |
24 | #include <sys/prctl.h> | |
25 | ||
26 | static int | |
27 | do_sve_ioctl_test (void) | |
28 | { | |
29 | int i, res, init_vl; | |
30 | ||
31 | res = prctl (PR_SVE_GET_VL, 0, 0, 0, 0); | |
32 | if (res < 0) | |
33 | { | |
34 | printf ("FAILED to PR_SVE_GET_VL (%d)", res); | |
35 | return -1; | |
36 | } | |
37 | init_vl = res & PR_SVE_VL_LEN_MASK; | |
38 | ||
39 | for (i = init_vl; i > 15; i /= 2) | |
40 | { | |
41 | printf ("Checking PR_SVE_SET_VL=%d\n", i); | |
42 | res = prctl (PR_SVE_SET_VL, i, 0, 0, 0, 0); /* break here */ | |
43 | if (res < 0) | |
44 | { | |
45 | printf ("FAILED to PR_SVE_SET_VL (%d)", res); | |
46 | return -1; | |
47 | } | |
48 | } | |
49 | return 0; | |
50 | } | |
51 | ||
52 | int | |
53 | main (int argc, char **argv) | |
54 | { | |
55 | if (getauxval (AT_HWCAP) & HWCAP_SVE) | |
56 | { | |
57 | return do_sve_ioctl_test (); | |
58 | } | |
59 | else | |
60 | { | |
61 | printf ("SKIP: no HWCAP_SVE on this system\n"); | |
62 | return 1; | |
63 | } | |
64 | } |