Patent ID: 7210027
Filing Date: 2007-04-24
Classification: G06F

Abstract:
1. A data processing apparatus using a register window method performing data transmission from a master register which is a group of registers holding a plurality of register windows, to a work register which is capable of holding a group of predefined number of register windows transmitted from the master register, transmitting a first data which is an amount of data required for the predefined number of register windows and a second data for global registers which are data commonly required for a data processing related to the predefined number of register windows during an exception handling, comprising: an acquisition unit for acquiring exception handling occurrence information indicating an occurrence of exception handling; a discrimination unit for discriminating said exception handling occurrence information; and a transmission control unit for controlling said data transmission such that when the exception handling does not cause a switching of register windows or does not initialize said work register, only said second data is transmitted, and in other exception handling, said first and second data are transmitted, according to a discrimination result by said discrimination unit.