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a945c346 | 1 | /* Copyright (C) 2015-2024 Free Software Foundation, Inc. |
fa499995 AS |
2 | Contributed by Mentor Embedded. |
3 | ||
4 | This file is part of the GNU Offloading and Multi Processing Library | |
5 | (libgomp). | |
6 | ||
7 | Libgomp is free software; you can redistribute it and/or modify it | |
8 | under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 3, or (at your option) | |
10 | any later version. | |
11 | ||
12 | Libgomp is distributed in the hope that it will be useful, but WITHOUT ANY | |
13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS | |
14 | FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
15 | more details. | |
16 | ||
17 | Under Section 7 of GPL version 3, you are granted additional | |
18 | permissions described in the GCC Runtime Library Exception, version | |
19 | 3.1, as published by the Free Software Foundation. | |
20 | ||
21 | You should have received a copy of the GNU General Public License and | |
22 | a copy of the GCC Runtime Library Exception along with this program; | |
23 | see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
24 | <http://www.gnu.org/licenses/>. */ | |
25 | ||
26 | /* This file implements timer routines for AMD GCN. */ | |
27 | ||
28 | #include "libgomp.h" | |
29 | ||
30 | /* According to AMD: | |
31 | dGPU RTC is 27MHz | |
32 | AGPU RTC is 100MHz | |
33 | FIXME: DTRT on an APU. */ | |
34 | #define RTC_TICKS (1.0 / 27000000.0) /* 27MHz */ | |
35 | ||
36 | double | |
37 | omp_get_wtime (void) | |
38 | { | |
39 | uint64_t clock; | |
40 | asm ("s_memrealtime %0\n\t" | |
41 | "s_waitcnt 0" : "=r" (clock)); | |
42 | return clock * RTC_TICKS; | |
43 | } | |
44 | ||
45 | double | |
46 | omp_get_wtick (void) | |
47 | { | |
48 | return RTC_TICKS; | |
49 | } | |
50 | ||
51 | ialias (omp_get_wtime) | |
52 | ialias (omp_get_wtick) |