lldb/test/API/linux/aarch64/non_address_bit_code_break/main.c

   1 #include <stdint.h>
   2
   3 void foo(void) {}
   4 typedef void (*FooPtr)(void);
   5
   6 int main() {
   7   FooPtr fnptr = foo;
   8   // Set top byte.
   9   fnptr = (FooPtr)((uintptr_t)fnptr | (uintptr_t)0xff << 56);
  10   // Then apply a PAuth signature to it.
  11   __asm__ __volatile__("pacdza %0" : "=r"(fnptr) : "r"(fnptr));
  12   // fnptr is now:
  13   // <8 bit top byte tag><pointer signature><virtual address>
  14
  15   foo(); // Set break point at this line.
  16
  17   return 0;
  18 }