cacheutils.h

#ifndef CACHEUTILS_H
#define CACHEUTILS_H

#define MAX(X,Y) (((X) > (Y)) ? (X) : (Y))
#define MIN(X,Y) (((X) < (Y)) ? (X) : (Y))

unsigned long probe_timing(char *adrs) {
    volatile unsigned long time;

    asm __volatile__(
        "    mfence             \n"
        "    lfence             \n"
        "    rdtsc              \n"
        "    lfence             \n"
        "    movl %%eax, %%esi  \n"
        "    movl (%1), %%eax   \n"
        "    lfence             \n"
        "    rdtsc              \n"
        "    subl %%esi, %%eax  \n"
        "    clflush 0(%1)      \n"
        : "=a" (time)
        : "c" (adrs)
        : "%esi", "%edx"
    );
    return time;
}

unsigned long long rdtsc() {
	unsigned long long a, d;
	asm volatile ("mfence");
	asm volatile ("rdtsc" : "=a" (a), "=d" (d));
	a = (d<<32) | a;
	asm volatile ("mfence");
	return a;
}

void maccess(void* p)
{
  asm volatile ("movq (%0), %%rax\n"
    :
    : "c" (p)
    : "rax");
}

void flush(void* p) {
    asm volatile ("clflush 0(%0)\n"
      :
      : "c" (p)
      : "rax");
}

#endif