Date: Tue, 21 Jun 2011 10:01:34 -0700 From: Bakul Shah <bakul@bitblocks.com> To: Ewart Tempest <etempest@jnpr.net> Cc: freebsd-hackers@freebsd.org, Ewart Tempest <etempest@juniper.net> Subject: Re: dwarf2 reader Message-ID: <20110621170134.ADA33B827@mail.bitblocks.com> In-Reply-To: Your message of "Mon, 13 Jun 2011 10:05:15 EDT." <4DF6191B.2030407@jnpr.net> References: <4DF6191B.2030407@jnpr.net>
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On Mon, 13 Jun 2011 10:05:15 EDT Ewart Tempest <etempest@jnpr.net> wrote:
> I have developed some flight recording capability in the JUNOS FreeBSD
> based kernel, with the flight recorded data being captured in binary
> form for performance. All the subsequent formatting and display of this
> data is performed by a user-space application. I would like to reduce
> the amount of time that designers spend writing formatters to display
> their flight recorded data. kgdb is perfectly capable of displaying all
> kernel resident data structures, and the manner in which it does so is
> perfectly acceptable for flight recording purposes. The code that kgdb
> uses to support this framework is difficult to break out - does anyone
> know of a dwarf2 reader s/w implementation that is more re-usable?
In addition to lldb, there is the Path_DB debugger from
Pathscale that has a dwarf reader. Path_DB seems fairly
portable but don't know how hard it would be break out the
dwarf2 code, about 2K+ lines of C++. Open sourced under CDDL.
git://github.com/path64/debugger.git
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