Mercurial > hg > audiostuff
diff 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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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/spandsp-0.0.3/spandsp-0.0.3/src/spandsp/timing.h Fri Jun 25 16:00:21 2010 +0200 @@ -0,0 +1,61 @@ +/* + * 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 ------------------------------------------------------------*/