1 files changed, 0 insertions, 73 deletions

diff --git a/nacl/cpucycles/cortex.c b/nacl/cpucycles/cortex.c
deleted file mode 100644
index 07e2fa02..00000000
--- a/nacl/cpucycles/cortex.c
+++ /dev/null
@@ -1,73 +0,0 @@
-/*
-cpucycles/cortex.c version 20101203
-D. J. Bernstein
-Public domain.
-*/
-
-#define SCALE 1
-#include <time.h>
-#include <unistd.h>
-#include <sys/time.h>
-
-static int enabled = 0;
-
-static int prev[3];
-static unsigned long long prevcycles = 0;
-static int now[3];
-static long long cyclespersec = 0;
-
-static void readticks(unsigned int *result)
-{
-  struct timeval t;
-  unsigned int cc;
-  if (!enabled) {
-    asm volatile("mcr p15, 0, %0, c9, c12, 0" :: "r"(17));
-    asm volatile("mcr p15, 0, %0, c9, c12, 1" :: "r"(0x8000000f));
-    asm volatile("mcr p15, 0, %0, c9, c12, 3" :: "r"(0x8000000f));
-    enabled = 1;
-  }
-  asm volatile("mrc p15, 0, %0, c9, c13, 0" : "=r"(cc));
-  gettimeofday(&t,(struct timezone *) 0);
-  result[0] = cc;
-  result[1] = t.tv_usec;
-  result[2] = t.tv_sec;
-}
-
-long long cpucycles_cortex(void)
-{
-  unsigned long long delta4;
-  int deltan;
-  int deltas;
-  unsigned long long guesscycles;
-  
-  readticks(now);
-  delta4 = (unsigned int) (now[0] - prev[0]); /* unsigned change in number of cycles mod 2^32 */
-  deltan = now[1] - prev[1]; /* signed change in number of nanoseconds mod 10^9 */
-  deltas = now[2] - prev[2]; /* signed change in number of seconds */
-  if ((deltas == 0 && deltan < 200000) || (deltas == 1 && deltan < -800000))
-    return (prevcycles + delta4) * SCALE;
-
-  prev[0] = now[0];
-  prev[1] = now[1];
-  prev[2] = now[2];
-
-  if ((deltas == 0 && deltan < 300000) || (deltas == 1 && deltan < -700000)) {
-    // actual number of cycles cannot have increased by 2^32 in <0.3ms
-    cyclespersec = 1000000 * (unsigned long long) delta4;
-    cyclespersec /= deltan + 1000000 * (long long) deltas;
-  } else {
-    guesscycles = deltas * cyclespersec;
-    guesscycles += (deltan * cyclespersec) / 1000000;
-    while (delta4 + 2147483648ULL < guesscycles) delta4 += 4294967296ULL;
-    /* XXX: could do longer-term extrapolation here */
-  }
-
-  prevcycles += delta4;
-  return prevcycles * SCALE;
-}
-
-long long cpucycles_cortex_persecond(void)
-{
-  while (!cyclespersec) cpucycles_cortex();
-  return cyclespersec * SCALE;
-}