Marc Hacin <thanj...@free.fr> writes:
> Perhaps is it easier to track for example a specific 64bits write > pattern. A 64 bit tag the guest app code will write anywhere, > triggering the plug-in ? Instrumenting all write operations is quite expensive given the number of them. Most ISA's have a NOP space which can be validly used to encode side channel information to signal to the plugin. Either trigger on the first translation (for a oneshot) or add a call-back so each time the instruction is called you can signal something. > > Le 29 juil. 2020 à 10:36, à 10:36, Kamil Garifullin <kgari...@gmail.com> a > écrit: >>Hi, >> >>I'm trying to create a plugin which will track an activity during a >>particular period of time. >> >>Can I somehow send a signal from the guest to the instrumentation >>plugin? >> >>For example, I want to boot linux, do some preparations, then start a >>targeted application and start my tracking. It can be both: do not >>inject >>instrumentation until special indication or just a special plugin event >>to >>set up some flags. >> >>My thoughts were to have an event which will indicate that pmon was >>touched. It allows you to do all the preparations in the guest machine, >>then dump pmons as an indicator to start tracking and then run the >>target >>application. -- Alex Bennée
