发明授权
- 专利标题: Method and apparatus for compressing relative addresses
- 专利标题(中): 用于压缩相对地址的方法和装置
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申请号: US10185895申请日: 2002-06-27
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公开(公告)号: US07111148B1公开(公告)日: 2006-09-19
- 发明人: Bret L. Toll , Michael J. St. Clair , John Allan Miller , Hitesh Ahuja
- 申请人: Bret L. Toll , Michael J. St. Clair , John Allan Miller , Hitesh Ahuja
- 申请人地址: US CA Santa Clara
- 专利权人: Intel Corporation
- 当前专利权人: Intel Corporation
- 当前专利权人地址: US CA Santa Clara
- 代理商 Larry M. Mennemeier
- 主分类号: G06F9/26
- IPC分类号: G06F9/26
摘要:
A method and apparatus for compressing relative addresses and for storage of compressed relative addresses. A relative virtual address is computed in a particular stage of a processor pipeline and then compressed according to one or more compression techniques for storage in a micro-operation storage. A compressed relative address is retrieved from one or more micro-operation entries of the micro-operation storage and an uncompressed virtual address is reconstructed from the compressed relative address and an instruction pointer (IP) address associated with the head of the micro-operation storage line in which the compressed relative address was stored. IP-relative addresses may be computed in a manner similar to relative branch targets, then compressed and stored in one or more micro-operation entries of a micro-operation storage line to be reconstructed later according to an IP address associated with the respective micro-operation storage line in which their compressed counterpart was stored.
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