Is there a way to add fields to the thread descriptor on Hurd? With NPTL, we have THREAD_GETMEM and THREAD_SETMEM to access thread-local variables without relying on the platform TLS implementation.
I want to use this for thread-local data in the dynamic loader, specifically for the exception handling context. Using the thread descriptor or TCB for this seems appropriate because this TLS data is not supposed to be duplicated in alternative namespaces (because they share the dynamic loader).
