| /* High precision, low overhead timing functions. Alpha version. |
| Copyright (C) 2001-2018 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Richard Henderson <rth@redhat.com>, 2001. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library 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 |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library. If not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #ifndef _HP_TIMING_H |
| #define _HP_TIMING_H 1 |
| |
| /* We always have the timestamp register, but it's got only a 4 second |
| range. Use it for ld.so profiling only. */ |
| #define HP_TIMING_AVAIL (0) |
| #define HP_SMALL_TIMING_AVAIL (1) |
| |
| /* We indeed have inlined functions. */ |
| #define HP_TIMING_INLINE (1) |
| |
| /* We use 32 bit values for the times. */ |
| typedef unsigned int hp_timing_t; |
| |
| /* The "rpcc" instruction returns a 32-bit counting half and a 32-bit |
| "virtual cycle counter displacement". Subtracting the two gives us |
| a virtual cycle count. */ |
| #define HP_TIMING_NOW(VAR) \ |
| do { \ |
| unsigned long int x_; \ |
| asm volatile ("rpcc %0" : "=r"(x_)); \ |
| (VAR) = (int) (x_) - (int) (x_ >> 32); \ |
| } while (0) |
| |
| #include <hp-timing-common.h> |
| |
| #endif /* hp-timing.h */ |
