Date: Sat, 18 Jun 2022 15:21:31 +0300 From: Christos Margiolis <christos@freebsd.org> To: soc-status@freebsd.org Cc: markj@freebsd.org Subject: [GSOC22 Weekly Update #1] Instruction-level dynamic tracing Message-ID: <20220618122131.nox4ox73vdszftog@pleb>
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Hello, The project's goals and deliverables are already documented in the Wiki article [1] (do read this first). Development [2] has started a bit before GSOC's official starting date, so this is not _really_ a weekly report. So far we've implemented the basic structure of the provider, that is, it can create probes for all instructions in a given function and patch them with breakpoints whenever they're enabled. In the wiki article I mention how we can achieve tracing of all instructions using "trampolines" (not real ones). Currently we have been able to get this mechanism to work for many of the instructions as a proof-of-concept, but we'll need to work on the special cases that make some instructions break functionality. [1] https://wiki.freebsd.org/SummerOfCode2022Projects/InstructionLevelDynamicTracing [2] https://github.com/christosmarg/freebsd/tree/kinst Christoshome | help
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