--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/spandsp-0.0.6pre17/src/spandsp/timing.h	Fri Jun 25 15:50:58 2010 +0200
@@ -0,0 +1,83 @@
+/*
+ * 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 Lesser General Public License version 2.1,
+ * 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser 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 1.14 2009/09/04 14:38:47 steveu Exp $
+ */
+
+#if !defined(_SPANDSP_TIMING_H_)
+#define _SPANDSP_TIMING_H_
+
+#if defined(__cplusplus)
+extern "C"
+{
+#endif
+
+#if defined(__MSVC__)
+__declspec(naked) unsigned __int64 __cdecl rdtscll(void)
+{
+   __asm
+   {
+      rdtsc
+      ret       ; return value at EDX:EAX
+   }
+}
+/*- End of function --------------------------------------------------------*/
+#elif defined(__GNUC__)
+#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)
+{
+    uint32_t a;
+    uint32_t d;
+
+    /* For x86_64 we need to merge the result in 2 32 bit registers
+       into one clean 64 bit result. */
+    __asm__ __volatile__(" rdtsc\n" : "=a" (a), "=d" (d));
+    return ((uint64_t) a) | (((uint64_t) d) << 32);
+}
+/*- End of function --------------------------------------------------------*/
+#else
+static __inline__ uint64_t rdtscll(void)
+{
+    /* This architecture doesn't have a suitable timer */
+    return 0llu;
+}
+/*- End of function --------------------------------------------------------*/
+#endif
+#endif
+
+#if defined(__cplusplus)
+}
+#endif
+
+#endif
+/*- End of file ------------------------------------------------------------*/