freebsd4_sigaction_args
{ compat4(AS(freebsd4_sigaction_args),sigaction), .sy_auevent = AUE_SIGACTION, .sy_flags = SYF_CAPENABLED, .sy_thrcnt = SY_THR_STATIC }, /* 342 = freebsd4 sigaction */
freebsd4_sigaction(struct thread *td, struct freebsd4_sigaction_args *uap)
int freebsd4_sigaction(struct thread *, struct freebsd4_sigaction_args *);