| 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 | |
| 12 | int 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 | } |