Control flow management for execution of dynamically translated non-native code in a virtual hosting environment
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United States of America Patent
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Aug 26, 2014
Grant Date -
Jan 23, 2014
app pub date -
Jul 20, 2012
filing date -
Jul 20, 2012
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Abstract
Execution of non-native operating system images within a virtualized computer system is improved by providing a mechanism for retrieving translated code physical addresses corresponding to un-translated code branch target addresses using a host code map. Hardware acceleration mechanisms, such as content-accessible look-up tables, directory hardware, or processor instructions that operate on tables in memory can be provided to accelerate the performance of the translation mechanism. The virtual address of the branch instruction target is used as a key to look up a corresponding record that contains a physical address of the translated code page containing the translated branch instruction target, and execution is directed to the physical address obtained from the record, once the physical page containing the translated code corresponding the target address is loaded in memory.
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