sigacthandler
prt_addr((void *)uberdata.sigacthandler, 0));
uberaddr + offsetof(uberdata32_t, sigacthandler));
uberaddr + offsetof(uberdata_t, sigacthandler));
caddr32_t sigacthandler;
extern void sigacthandler(int, siginfo_t *, void *);
void (*sigacthandler)(int, siginfo_t *, void *);
tact.sa_sigaction = self->ul_uberdata->sigacthandler;
tact.sa_sigaction = udp->sigacthandler;
tact.sa_sigaction = udp->sigacthandler;
*osigacthandler = udp->sigacthandler;
udp->sigacthandler = nsigacthandler;
act.sa_sigaction = udp->sigacthandler;
act.sa_sigaction = udp->sigacthandler;
sigacthandler, /* sigacthandler */
udp->sigacthandler = sigacthandler;