Will Smith was in a dark place after he slapped Chris Rock at the Oscars, but he had a champion in his corner -- the actor says Floyd Mayweather called him every day for 10-straight days after the incident, just to make sure he was doing okay.
Smith made the revelation during a private screening of his new "Emancipation" movie at The London hotel ... and with Floyd in attendance, he took a moment to praise TBE for being there for him, even though they weren't exactly best buds at the time.