Data structure for emulating virtual memory working spaces
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United States of America Patent
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Sep 3, 2002
Grant Date -
N/A
app pub date -
Jun 15, 2000
filing date -
Jun 15, 2000
priority date (Note) -
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Abstract
In an emulation of a multiprocessor Target computer system on a Host computer system, Host virtual memory addresses are mapped and utilized as Target virtual memory addresses. Target virtual memory control tables are setup accordingly. Virtual-to-real address translation of a Target system effective address to a Host system virtual addresses is performed by identifying a working space for the effective address, selecting a working space base address data structure entry utilizing the corresponding working space number, determining a working space base address from that selected working space base address data structure entry, and then performing a linear translation multiplying the effective address by a constant and adding it to the working space base address to generate the host system virtual address. A corresponding working space limit entry can be utilized to bounds check the addresses generated.
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