Invention Grant
US07904891B2 Checking for instruction invariance to execute previously obtained translation code by comparing instruction to a copy stored when write operation to the memory portion occur
失效
检查指令不变性以通过将写入操作发生到存储器部分时存储的副本进行比较来执行先前获得的转换代码
- Patent Title: Checking for instruction invariance to execute previously obtained translation code by comparing instruction to a copy stored when write operation to the memory portion occur
- Patent Title (中): 检查指令不变性以通过将写入操作发生到存储器部分时存储的副本进行比较来执行先前获得的转换代码
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Application No.: US12177836Application Date: 2008-07-22
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Publication No.: US07904891B2Publication Date: 2011-03-08
- Inventor: John Banning , H. Peter Anvin , Robert Bedichek , Guillermo J. Rozas , Andrew Shaw , Linus Torvalds , Jason Wilson
- Applicant: John Banning , H. Peter Anvin , Robert Bedichek , Guillermo J. Rozas , Andrew Shaw , Linus Torvalds , Jason Wilson
- Main IPC: G06F9/455
- IPC: G06F9/455
Abstract:
In one embodiment, after translating a plurality of target instructions from a target memory location into a plurality of host instructions, a write operation to a target memory portion which includes said target memory location is detected. In response to the detecting, a copy of the target instructions is stored in a host memory. In response to an attempt to execute the host instructions, the copy is compared with a plurality of current target instructions presently stored in the target memory location. Further, in response to a mismatch based on the comparison, the host instructions are disabled.
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