Date: Tue, 4 Aug 2015 12:00:59 -0700 From: John-Mark Gurney <jmg@funkthat.com> To: John Baldwin <jhb@freebsd.org> Cc: "'freebsd-arch'" <freebsd-arch@freebsd.org> Subject: Re: Supporting cross-debugging vmcores in libkvm Message-ID: <20150804190058.GM78154@funkthat.com> In-Reply-To: <3121152.ujdxFEovO3@ralph.baldwin.cx> References: <3121152.ujdxFEovO3@ralph.baldwin.cx>
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John Baldwin wrote this message on Tue, Aug 04, 2015 at 10:56 -0700: > Many debuggers (recent gdb and lldb) support cross-architecture debugging > just fine. My current WIP port of kgdb to gdb7 supports cross-debugging for > remote targets already, but I wanted it to also support cross-debugging for > vmcores. Have you looked at the work the my GSoC student, Daniel Lovasko, is doing: https://wiki.freebsd.org/SummerOfCode2015/TypeAwareKernelVirtualMemoryAccess This uses libctf to completely abstract out the accessing of data in libkvm so that it can be used w/ any arch as long as you have ctf data... This means you could use netstat on amd64 on an armeb vmcore w/o issues... It does look like some of this is still useful, but want to make sure that we aren't reproducing tons of work... For example, he's working on procstat right now: https://github.com/lovasko/taprocstat -- John-Mark Gurney Voice: +1 415 225 5579 "All that I will do, has been done, All that I have, has not."
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