Hello, now that we got enough of the system running on x86_64-gnu, we can actually test the signal machinery. In fact we sort of *have to*, because /bin/sh receives SIGCHLD when a command completes, and wants to handle it.
Suprisingly, most of the logic actually does just work! -- but several things were broken; and this patch series contains the fixes. With these patches (+ the thread setup fixes that I'll send as a separate series) I'm able to receive a signal, do all the trampoline and intr-rpc magic, run the handler, and sigreturn back into user code -- apparently successfully. Sergey
