Method for emulating hardware features of a foreign architecture in a host operating system environment
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United States of America Patent
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May 4, 2004
Grant Date -
Mar 7, 2002
app pub date -
Apr 18, 2001
filing date -
Feb 17, 1999
priority date (Note) -
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status (Latency Note)
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Abstract
The present invention relates to a computer system adapted to efficiently execute binary translated code. In accordance with the present invention, foreign code is stored in a foreign virtual memory space, translated to acquire binary translated code, which is stored in a host virtual memory space and then executed. The host computer system isolates each virtual memory configuration into separate processes referred to as a virtual machine while enabling multiple virtual machines to exist simultaneously. Execution may switch from one virtual machine to another merely by switching to a new page table, where each page table describes the memory configuration of a virtual machine. Common system level resources are shared by the virtual machines under the control of a virtual memory manager.
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