IIRC the classic Macintosh for example, even despite the flat memory model, had relocatable code segments to deal with real memory limitations, with a relocatab

IIRC the classic Macintosh for example, even despite the flat memory model, had relocatable code segments to deal with real memory limitations, with a relocatable base + fixed offset jump table. They're not identical situations, but I think Think C had pragmas to delineate segments (although my memory is shaky there).