src/ticks_x86.h

   1 /*
   2  * nao-ulib
   3  * Copyright 2011 Daniel Borkmann <dborkma@tik.ee.ethz.ch>
   4  * Subject to the GPL.
   5  * Nao-Team HTWK,
   6  * Faculty of Computer Science, Mathematics and Natural Sciences,
   7  * Leipzig University of Applied Sciences (HTWK Leipzig)
   8  */
   9
  10 #ifndef TICKS_X86
  11 #define TICKS_X86
  12
  13 /*
  14  * Generate 64-bit timestamp.
  15  */
  16
  17 static unsigned long long getticks(void)
  18 {
  19         unsigned int __a,__d;
  20
  21         __asm__ __volatile__("rdtsc" : "=a" (__a), "=d" (__d));
  22         return ((long long)__a) | (((long long)__d)<<32);
  23 }
  24
  25 #endif /* TICKS_X86 */