In a food processor, combine the flour and semolina and pulse several times. In a measuring cup, mix the whole eggs and egg yolks. With the machine on, pour in the eggs and process until the flour is moistened; the dough may still be a bit crumbly. Turn the dough out onto a floured work surface and knead until silky smooth, about 3 minutes. Wrap in plastic and let stand at room temperature for 30 minutes.