A PROCESSING DEVICE FOR EXECUTING VIRTUAL MACHINE

专利名称：A PROCESSING DEVICE FOR EXECUTING

VIRTUAL MACHINE INSTRUCTIONS

发明人：LINDWER, Menno, Menasshe申请号：EP98940511.3申请日：19980917公开号：EP0950216B1公开日：20031126

摘要：A processing device comprises an instruction memory 120 for storing virtualmachine instructions, such as Java byte codes. A processor 112 of the processing devicecomprises a predetermined micro controller core 114 for executing native instructionsfrom a predetermined set of micro controller specific instructions. The native instructionsdiffer from the virtual machine instructions. The processor 112 is of a type which mayrequest re-feeding of a plurality of native instructions. For instance, the processor 112may have a pipeline and/or instruction cache which after an interrupt need to be re-filled.The processing device comprises a pre-processor 130 with a converter 132 for convertingat least one virtual machine instruction, fetched from the instruction memory, into atleast one native instruction. Feeding means 136 of the pre-processor 130 feed nativeinstructions to the micro controller core 114 and re-feed native instructions in responseto the processor requesting re-feeding of a number of native instructions. The

processing device is a stack oriented machine, and at least the top elements of the stackare mapped onto registers of the processor. The position of the top of the memorystack is preferably indicated using a register of the converter.

申请人：KONINKL PHILIPS ELECTRONICS NV

地址：NL

国籍：NL

代理机构：van der Veer, Johannis Leendert

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