Is this function needed? I'm guessing that the `base' is the
address of a a descriptor that libthread_db uses to find the
- thread local address base that GDB needs. Perhaphs that
+ thread local address base that GDB needs. Perhaps that
descriptor is defined by the ABI. Anyway, given that
libthread_db calls this function without prompting (gdb
requesting tls base) I guess it needs info in there anyway. */