TOKYO (AFP) - Japan’s upper house on Wednesday slapped Prime Minister Yoshihiko Noda with a censure motion that effectively stalls parliament and heaps pressure on the premier to call snap elections. The non-binding motion, a symbolic wrist slap signalling the opp’s refusal to work with Noda’s cabinet, would all but end the legislative session as it threatens to gridlock the passage of any new law. The move would likely nix a proposed debt financing bill and force the govt to adjust its budget for the year to March 2013. Opp parties boycotted passage of the bill - which would help finance about 40 percent of public spending in this fiscal year - in the lower house of parliament on Tuesday.