MAP_STACK
_rtld_get_stack_prot(), MAP_STACK,
bsd_flags |= MAP_STACK;
if (flags & MAP_STACK) {
((flags & MAP_STACK) ? VM_MAP_WIRE_HOLESOK :
if (flags & MAP_STACK) {
MAP_STACK | MAP_NOSYNC | MAP_ANON | MAP_EXCL | MAP_NOCORE |
MAP_STACK | MAP_PRIVATE | MAP_ANON, -1, 0);