LXR qemu/tests/tcg/aarch64/pauth-1.c

   1#include <assert.h>
   2#include <sys/prctl.h>
   3#include <stdio.h>
   4
   5#ifndef PR_PAC_RESET_KEYS
   6#define PR_PAC_RESET_KEYS  54
   7#define PR_PAC_APDAKEY     (1 << 2)
   8#endif
   9
  10#define TESTS 1000
  11
  12int main()
  13{
  14    int x, i, count = 0;
  15    void *p0 = &x, *p1, *p2;
  16    float perc;
  17
  18    for (i = 0; i < TESTS; i++) {
  19        asm volatile("pacdza %0" : "=r"(p1) : "0"(p0));
  20        prctl(PR_PAC_RESET_KEYS, PR_PAC_APDAKEY, 0, 0, 0);
  21        asm volatile("pacdza %0" : "=r"(p2) : "0"(p0));
  22
  23        if (p1 != p0) {
  24            count++;
  25        }
  26        if (p1 != p2) {
  27            count++;
  28        }
  29    }
  30
  31    perc = (float) count / (float) (TESTS * 2);
  32    printf("Ptr Check: %0.2f%%\n", perc * 100.0);
  33    assert(perc > 0.95);
  34    return 0;
  35}
  36