#include <sys/prctl.h>
#include <stdio.h>
#include <stdlib.h>

void move(char *from, char *to, long stride, long count);

int main(int argc, char *argv[])
{
  int pc=prctl(PR_GET_SPECULATION_CTRL,PR_SPEC_STORE_BYPASS,0,0,0);
  printf("3 means speculative store bypass enabled: %x\n",pc);
  long mem[10000];
  long i=0;
  long stride;
  if (argc!=2) {
    fprintf(stderr,"Usage: %s <stride>\n", argv[0]);
    exit(1);
  }
  stride = atoi(argv[1]);
  for (i=0; i<10000; i++)
    mem[i]=1;
  for (i=0; i<1000000; i++) {
    move((char *)mem,(char *)mem+stride,stride,1000);
  }
  return 0;
}