DEVICE, DATA PROCESSING CHAIN AND METHOD FOR CONTEXT SWITCHING

This data-processing device includes a unit for processing data, a storage memory and a buffer-memory device configured to contain a first group of data relative to a first context and exchange data between the processing unit and the first group of data. The buffer-memory device is further configured to contain a second group of data relative to a second context and, upon reception of a context-switching instruction, exchange data between the processing unit and the second group of data, in place of the first group of data. The data-processing device further includes a context-switching device configured to emit the context-switching instruction, select a group of data recorded in the storage memory, copy the first group of data to the storage memory and copy the selected group of data to the buffer-memory device.