// One of sa_sigaction and/or sa_handler
	if ((prev_sa.sa_flags&SA_SIGINFO) != 0) {
		prev_sa.sa_sigaction(signo, info, context);
		return;
	}
	if (prev_sa.sa_handler != SIG_IGN && prev_sa.sa_handler != SIG_DFL) {
		prev_sa.sa_handler(signo);
		return;
	}

	fprintf(stderr, "No Go handler to forward to!\n");
	abort();
}

void registerSegvFowarder() {
	struct sigaction sa;

directly by the Go runtime to implement runtime.CPUProfile. Other
signals will be caught but no action will be taken.

If the Go program is started with either SIGHUP or SIGINT ignored
(signal handler set to SIG_IGN), they will remain ignored.

If the Go program is started with a non-empty signal mask, that will
generally be honored. However, some signals are explicitly unblocked:

		handlingSig[i] = 1
		setsig(i, abi.FuncPCABIInternal(sighandler))
	}
}

//go:nosplit
//go:nowritebarrierrec
func sigInstallGoHandler(sig uint32) bool {
	// For some signals, we respect an inherited SIG_IGN handler
	// rather than insist on installing our own default handler.
	// Even these signals can be fetched using the os/signal package.
	switch sig {
	case _SIGHUP, _SIGINT: