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

   1 #include <asm/hwcap.h>
   2 #include <asm/mman.h>
   3 #include <sys/auxv.h>
   4 #include <sys/mman.h>
   5 #include <sys/prctl.h>
   6 #include <unistd.h>
   7
   8 int main(int argc, char const *argv[]) {
   9   if (!(getauxval(AT_HWCAP2) & HWCAP2_MTE))
  10     return 1;
  11
  12   int got = prctl(PR_SET_TAGGED_ADDR_CTRL, PR_TAGGED_ADDR_ENABLE, 0, 0, 0);
  13   if (got)
  14     return 1;
  15
  16   void *the_page = mmap(0, sysconf(_SC_PAGESIZE), PROT_MTE,
  17                         MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
  18   if (the_page == MAP_FAILED)
  19     return 1;
  20
  21   return 0; // Set break point at this line.
  22 }