/* signal() for MiNT; written by ERS, placed in the public domain */

#include <errno.h>
#include <osbind.h>
#include <mintbind.h>
#include <signal.h>

/* vector of signal handlers (for TOS) */
__Sigfunc _sig_handler[NSIG];

/* vector giving which signals are currently blocked from delivery (for TOS) */
long _sigmask;

/* vector giving an indication of which signals are currently pending (for TOS) */
long _sigpending;

__Sigfunc
signal(sig, func)
	int sig;
	__Sigfunc func;
{
	long old;
	extern int __mint;
	__Sigfunc oldfunc;

	if (__mint == 0) {
		if (sig < 0 || sig >= NSIG) {
			errno = ERANGE;
			return SIG_ERR;
		}
		oldfunc = _sig_handler[sig];
		_sig_handler[sig] = func;
		return oldfunc;
	}

	old = Psignal((short)sig, (long)func);
	if (old < 0) {
		errno = -old;
		return SIG_ERR;
	}
	return (__Sigfunc) old;
}

/* initialize signal handlers (for dumped applications) */

void
_init_signal()
{
	int i;

	for (i = 0; i < NSIG; i++)
		_sig_handler[i] = SIG_DFL;
	_sigpending = _sigmask = 0;
}