| 1 | // This program makes a multi tier nested function call to test AArch64 |
| 2 | // Pointer Authentication feature. |
| 3 | |
| 4 | // To enable PAC return address signing compile with following clang arguments: |
| 5 | // -march=armv8.3-a -mbranch-protection=pac-ret+leaf |
| 6 | |
| 7 | #include <stdlib.h> |
| 8 | |
| 9 | static void __attribute__((noinline)) func_c(void) { |
| 10 | exit(status: 0); // Frame func_c |
| 11 | } |
| 12 | |
| 13 | static void __attribute__((noinline)) func_b(void) { |
| 14 | func_c(); // Frame func_b |
| 15 | } |
| 16 | |
| 17 | static void __attribute__((noinline)) func_a(void) { |
| 18 | func_b(); // Frame func_a |
| 19 | } |
| 20 | |
| 21 | int main(int argc, char *argv[]) { |
| 22 | func_a(); // Frame main |
| 23 | return 0; |
| 24 | } |
| 25 | |