sigexit
sigexit(lp, sig);
sigexit(lp, sig);
sigexit(lp, SIGILL);
sigexit(lp, SIGILL);
void sigexit (struct lwp *lp, int sig) __dead2;
int sigexit = 0;
sigexit = pfs.val;
if (sigexit) {
if (sigexit == SIGQUIT)
exit(sigexit);
(void) signal(sigexit, SIG_DFL);
(void) kill(getpid(), sigexit);