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>
date Fri, 25 Jun 2010 16:00:21 +0200
parents
children
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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 ------------------------------------------------------------*/

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