METHODS, SYSTEMS, COMPUTER PROGRAMS AND APPARATUS FOR CHANGING A PROCESSOR STATE
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United States of America Patent
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Issued Date -
Mar 12, 2009
app pub date -
Sep 11, 2007
filing date -
Sep 11, 2007
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Methods, systems, computer programs and apparatus for changing a processor state. In example embodiments of the invention, software porting onto an operating system calls a library routine, which creates an illegal instruction for special values in parameter registers. An illegal instruction exception handler recognizes the illegal instructions for special values in parameter registers, and, upon detecting the illegal instruction, enables or disables an interrupt state of a CPU associated with the system.
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