| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an address translation device capable of inhibiting occurrence of unnecessary memory access when retrieving a page table. <P>SOLUTION: An address translation device comprises: a translation lookaside buffer (TLB) which stores a set of a virtual address and a physical address for each page size and performs address translation; a storage part which stores a set of a virtual address put out from the TLB and a corresponding page size when a new set of a virtual address and a physical address read from a page table is registered in the TLB; and a base register which stores a page address for each page size. If a retrieval error occurs when the TLB is retrieved based on a virtual address of a translation object included in a memory access request, the virtual address of the translation object is translated to a physical address by retrieving main memory on the basis of a pointer address generated from information stored in the storage part and the base register. By this way, occurrence of unnecessary memory access is inhibited. <P>COPYRIGHT: (C)2013,JPO&INPIT |
