Autonomic hardware assist for patching code
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United States of America Patent
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Jul 15, 2014
Grant Date -
Jun 14, 2012
app pub date -
Jan 11, 2012
filing date -
Jan 14, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
Hardware assist to autonomically patch code. The present invention provides hardware microcode to a new type of metadata to selectively identify instructions to be patched for specific performance optimization functions. The present invention also provides a new flag in the machine status register (MSR) to enable or disable a performance monitoring application or process to perform code-patching functions. If the code patching function is enabled, the application or process may patch code at run time by associating the metadata with the selected instructions. The metadata includes pointers pointing to the patch code block code. The program code may be patched autonomically without modifying original code.
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