Method to detect a stalled instruction stream and serialize micro-operation execution
US7412589B2 · kind B2 · utility
13Cited by
2References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 31, 2006 |
| Grant date | Aug 12, 2008 |
| Priority date | — |
| Expiry date | Mar 31, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/3861
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A computer implemented method, apparatus, and computer usable program code for ensuring forward progress of instructions in a pipeline of a processor. Instructions are received in the pipeline. Instruction flushes are counted in the pipeline to determine a flush count. A single step mode in the pipeline is entered in response to the flush count exceeding a threshold. The single step mode instructions are issued in serial such that an instruction is not issued for execution until a prior instruction has completed execution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.