Invention Grant
- Patent Title: Apparatus and methods for speculative interrupt vector prefetching
- Patent Title (中): 用于推测中断向量预取的装置和方法
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Application No.: US12188626Application Date: 2008-08-08
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Publication No.: US08291202B2Publication Date: 2012-10-16
- Inventor: Daren Eugene Streett , Brian Michael Stempel
- Applicant: Daren Eugene Streett , Brian Michael Stempel
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Agent Peter Michael Kamarchik; Nicholas J. Pauley; Jonathan T. Velasco
- Main IPC: G06F9/30
- IPC: G06F9/30 ; G06F9/40

Abstract:
Techniques for interrupt processing are described. An exceptional condition is detected in one or more stages of an instruction pipeline in a processor. In response to the detected exceptional condition and prior to the processor accepting an interrupt in response to the detected exceptional condition, an instruction cache is checked for the presence of an instruction at a starting address of an interrupt handler. The instruction at the starting address of the interrupt vector table is prefetched from storage above the instruction cache when the instruction is not present in the instruction cache to load the instruction in the instruction cache, whereby the instruction is made available in the instruction cache by the time the processor accepts the interrupt in response to the detected exceptional condition.
Public/Granted literature
- US20100036987A1 Apparatus and Methods for Speculative Interrupt Vector Prefetching Public/Granted day:2010-02-11
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