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Submission + - Hidden debug mode found in AMD processors (woodmann.com)

An anonymous reader writes: A hidden (and hardware password protected, by means of required special values in processor registers) debug mode has been found in AMD processors, and documented by a reverse engineer called Czernobyl on the RCE Forums community today. It enables powerful hardware debugging features long longed by reverse engineers, such as hardware data-aware conditional breakpoints, and direct hardware "page guard"-style breakpoints. And the best part is, it's sitting right there in your processor already, just read the details and off you go with the debugging ninja powers!
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Hidden debug mode found in AMD processors

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