(* Ubuntu 17.10 /usr/include/i386-linux-gnu/asm/signal.h, /usr/include/i386-linux-gnu/bits/sigaction.h *)
				sa_sigaction*: PROCEDURE [ccall] (sig: INTEGER; siginfo: Ptrsiginfo_t; ptr: Ptrucontext_t); (* union with sa_handler*: PtrProc;*)
				sa_mask*: sigset_t;
				sa_flags*: intFlags;
				sa_restorer*: PROCEDURE [ccall];