Mercurial > hg > audiostuff
view spandsp-0.0.3/spandsp-0.0.3/src/spandsp/timing.h @ 5:f762bf195c4b
import spandsp-0.0.3
author | Peter Meerwald <pmeerw@cosy.sbg.ac.at> |
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date | Fri, 25 Jun 2010 16:00:21 +0200 |
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/* * SpanDSP - a series of DSP components for telephony * * timing.h - Provide access to the Pentium/Athlon TSC timer register * * Written by Steve Underwood <steveu@coppice.org> * * Copyright (C) 2001 Steve Underwood * * All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2, as * published by the Free Software Foundation. * * This program 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. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * * $Id: timing.h,v 1.6 2006/10/24 13:45:28 steveu Exp $ */ #if !defined(_TIMING_H_) #define _TIMING_H_ #ifdef __cplusplus extern "C" { #endif #if defined(__i386__) static __inline__ uint64_t rdtscll(void) { uint64_t now; __asm__ __volatile__(" rdtsc\n" : "=A" (now)); return now; } /*- End of function --------------------------------------------------------*/ #elif defined(__x86_64__) static __inline__ uint64_t rdtscll(void) { unsigned int __a; unsigned int __d; __asm__ __volatile__(" rdtsc\n" : "=a" (__a), "=d" (__d)); return ((unsigned long) __a) | (((unsigned long) __d) << 32); } /*- End of function --------------------------------------------------------*/ #endif #ifdef __cplusplus } #endif #endif /*- End of file ------------------------------------------------------------*/