/* Copyright (C) 2015-2020 Free Software Foundation, Inc. Contributed by Mentor Embedded. This file is part of the GNU Offloading and Multi Processing Library (libgomp). Libgomp is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3, or (at your option) any later version. Libgomp is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. Under Section 7 of GPL version 3, you are granted additional permissions described in the GCC Runtime Library Exception, version 3.1, as published by the Free Software Foundation. You should have received a copy of the GNU General Public License and a copy of the GCC Runtime Library Exception along with this program; see the files COPYING3 and COPYING.RUNTIME respectively. If not, see <http://www.gnu.org/licenses/>. */ /* This file implements timer routines for AMD GCN. */ #include "libgomp.h" /* According to AMD: dGPU RTC is 27MHz AGPU RTC is 100MHz FIXME: DTRT on an APU. */ #define RTC_TICKS (1.0 / 27000000.0) /* 27MHz */ double omp_get_wtime (void) { uint64_t clock; asm ("s_memrealtime %0\n\t" "s_waitcnt 0" : "=r" (clock)); return clock * RTC_TICKS; } double omp_get_wtick (void) { return RTC_TICKS; } ialias (omp_get_wtime) ialias (omp_get_wtick) |