sa_sigaction
act.sa_sigaction = handler;
if (!(oact.sa_flags & SA_SIGINFO) || oact.sa_sigaction != handler)
saved->sa_sigaction(sig, info, ctx);
sa.sa_sigaction = (void (*)(int, siginfo_t *, void *))func;
sa.sa_sigaction = (void *) handle_signal;
if (act.sa_sigaction != (void *)SIG_DFL) {
sa.sa_sigaction = sigfpe;
sa.sa_sigaction = sigfpe;
sa.sa_sigaction = sigalrm_action;
sa.sa_sigaction = action;
sa.sa_sigaction = sigfpe_flt_action;
sa.sa_sigaction = sigfpe_int_action;
sa.sa_sigaction = sigsegv_action;
sa.sa_sigaction = sigbus_action;
sa.sa_sigaction = &on_sigusr1;
sa.sa_sigaction = sigchld_action;
sa.sa_sigaction = sah;
act.sa_sigaction = myhandler;
sa.sa_sigaction = handler;
act.sa_sigaction = timer_signal_handler;
act.sa_sigaction = iretq_gp__gp_handler;
act.sa_sigaction = iretq_np__np_handler;
act.sa_sigaction = user_ldt__gp_handler;
act.sa_sigaction = handler;
sa.sa_sigaction = alarm_handler;
act.sa_sigaction = handler;
act.sa_sigaction = upcalls_not_started_handler1;
act.sa_sigaction = upcalls_not_started_handler2;
act.sa_sigaction = respected_while_running_handler1;
act.sa_sigaction = respected_while_running_handler2;
act.sa_sigaction = NULL;