| /* High precision, low overhead timing functions. sparc64 version. |
| Copyright (C) 2001-2014 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by David S. Miller <davem@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 |
| |
| #include <string.h> |
| #include <sys/param.h> |
| #include <_itoa.h> |
| |
| #define HP_TIMING_AVAIL (1) |
| #define HP_TIMING_INLINE (1) |
| |
| typedef unsigned long int hp_timing_t; |
| |
| #define HP_TIMING_ZERO(Var) (Var) = (0) |
| |
| #define HP_TIMING_NOW(Var) __asm__ __volatile__ ("rd %%tick, %0" : "=r" (Var)) |
| |
| #define HP_TIMING_DIFF_INIT() \ |
| do { \ |
| int __cnt = 5; \ |
| GLRO(dl_hp_timing_overhead) = ~0ull; \ |
| do \ |
| { \ |
| hp_timing_t __t1, __t2; \ |
| HP_TIMING_NOW (__t1); \ |
| HP_TIMING_NOW (__t2); \ |
| if (__t2 - __t1 < GLRO(dl_hp_timing_overhead)) \ |
| GLRO(dl_hp_timing_overhead) = __t2 - __t1; \ |
| } \ |
| while (--__cnt > 0); \ |
| } while (0) |
| |
| #define HP_TIMING_DIFF(Diff, Start, End) (Diff) = ((End) - (Start)) |
| |
| #define HP_TIMING_ACCUM(Sum, Diff) \ |
| do { \ |
| hp_timing_t __diff = (Diff) - GLRO(dl_hp_timing_overhead); \ |
| hp_timing_t tmp1, tmp2; \ |
| __asm__ __volatile__("1: ldx [%3], %0\n\t" \ |
| "add %0, %2, %1\n\t" \ |
| "casx [%3], %0, %1\n\t" \ |
| "cmp %0, %1\n\t" \ |
| "bne,pn %%xcc, 1b\n\t" \ |
| " nop" \ |
| : "=&r" (tmp1), "=&r" (tmp2) \ |
| : "r" (__diff), "r" (&(Sum)) \ |
| : "memory", "g1", "g5", "g6"); \ |
| } while(0) |
| |
| #define HP_TIMING_ACCUM_NT(Sum, Diff) (Sum) += (Diff) |
| |
| #define HP_TIMING_PRINT(Buf, Len, Val) \ |
| do { \ |
| char __buf[20]; \ |
| char *__cp = _itoa (Val, __buf + sizeof (__buf), 10, 0); \ |
| int __len = (Len); \ |
| char *__dest = (Buf); \ |
| while (__len-- > 0 && __cp < __buf + sizeof (__buf)) \ |
| *__dest++ = *__cp++; \ |
| memcpy (__dest, " clock cycles", MIN (__len, sizeof (" clock cycles"))); \ |
| } while (0) |
| |
| #endif /* hp-timing.h */ |