发明授权
US06996735B2 Apparatus for alignment of data collected from multiple pipe stages with heterogeneous retention policies in an unprotected pipeline
有权
用于将从多个管道段收集的数据与不受保护管道中的异质保留策略对齐的装置
- 专利标题： Apparatus for alignment of data collected from multiple pipe stages with heterogeneous retention policies in an unprotected pipeline
- 专利标题（中）： 用于将从多个管道段收集的数据与不受保护管道中的异质保留策略对齐的装置
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申请号： US10302236申请日： 2002-11-22
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公开(公告)号： US06996735B2公开(公告)日： 2006-02-07
- 发明人: Jose L. Flores , Lewis Nardini
- 申请人： Jose L. Flores , Lewis Nardini
- 申请人地址： US TX Dallas
- 专利权人： Texas Instruments Incorporated
- 当前专利权人： Texas Instruments Incorporated
- 当前专利权人地址： US TX Dallas
- 代理商 Robert D. Marshall, Jr.; W. James Brady, III; Frederick J. Telecky, Jr.
- 主分类号： G06F1/12
- IPC分类号： G06F1/12
摘要：
A method and apparatus for trace data alignment for trace data generated during differing instruction pipeline stages selectively delays write data, memory access address and memory access control data zero, one or two pipeline stages dependent upon the memory access control data. Program counter data delayed by one clock cycle is delayed one pipeline stage if the next instruction is a new instruction. Program counter control data is also delayed one pipeline stage. The write data, memory access address, memory access control data, program counter data and program counter control data are further delayed a number of pipeline stages to align with read data. The program counter data holds if the pipeline is stalled. The write data, memory access address, memory access control data, program counter data and program counter control data holds in the multistage pipeline delay register if the pipeline is stalled.