yes. I've come back to haunt y'all.
> Date: Mon, 13 Aug 2012 09:50:04 -0700
> From: doug.cole...@gmail.com
> To: factor-talk@lists.sourceforge.net
> Subject: Re: [Factor-talk] Any way of making sense of what's in the boot
> image?
>
> Is this you?
>
> http://www.clarkprosecutor.org/html/death/US/clagett651.htm
>
> On Mon, Aug 13, 2012 at 9:46 AM, Michael Clagett <mclag...@hotmail.com> wrote:
> > Thank you, Joe, for the quick response. It was actually the information in
> > the "such as" clause of your last sentence that I was looking for. I don't
> > mean for you to take the time out to document the meaning of these different
> > constants, but if it is documented somewhere other than in the creators'
> > heads, I would love to be directed to it. Not a big deal, because I'm sure
> > that when I get to seeing them used in the boot-image initialization code,
> > all will become clear. Still, it might help me better understand what's
> > being done at the make-image level to know.
> >> Date: Mon, 13 Aug 2012 12:21:52 -0400
> >
> >> From: arc...@gmail.com
> >> To: factor-talk@lists.sourceforge.net
> >> Subject: Re: [Factor-talk] Any way of making sense of what's in the boot
> >> image?
> >>
> >> On Mon, Aug 13, 2012 at 11:52 AM, Michael Clagett <mclag...@hotmail.com>
> >> wrote:
> >> > Here's an obscure question that is of interest to me in my current
> >> > quest,
> >> > but probably not to anyone else. So if there is a better forum for me to
> >> > ask such things, I would love to be instructed; until I hear otherwise,
> >> > however, I will continue to use this list.
> >> >
> >> > Is there any place where I can penetrate the meaning of the following
> >> > constants:
> >> >
> >> > CONSTANT: rt-dlsym 0
> >> > CONSTANT: rt-entry-point 1
> >> > CONSTANT: rt-entry-point-pic 2
> >> > CONSTANT: rt-entry-point-pic-tail 3
> >> > CONSTANT: rt-here 4
> >> > CONSTANT: rt-this 5
> >> > CONSTANT: rt-literal 6
> >> > CONSTANT: rt-untagged 7
> >> > CONSTANT: rt-megamorphic-cache-hits 8
> >> > CONSTANT: rt-vm 9
> >> > CONSTANT: rt-cards-offset 10
> >> > CONSTANT: rt-decks-offset 11
> >> > CONSTANT: rt-exception-handler 12
> >> > CONSTANT: rt-dlsym-toc 13
> >> > CONSTANT: rt-inline-cache-miss 14
> >> > CONSTANT: rt-safepoint 15
> >> >
> >> > So far I've only encountered rt-here and I've only seen it encoded into
> >> > a
> >> > relocation entry and not really used anywhere yet. But this strikes me
> >> > as
> >> > the kind of thing it would be useful to know as I am slogging through
> >> > this
> >> > stuff.
> >> >
> >> > Not a hugely pressing question, as I'm sure I'll muddle through it. But
> >> > if
> >> > anyone has a moment to illuminate, it would be nice.
> >>
> >> Those are relocation record types. When the compiler generates code
> >> for a word, it also needs to generate relocation entries every time it
> >> references another word in a jump or call statement, much like a
> >> native C compiler needs to do for symbols in other modules.
> >> The VM uses these relocation entries to update the operands of jump
> >> and call instructions when code is written to the code heap, when the
> >> code heap is compacted, or if code is moved in memory for any reason.
> >> The different rt-* constants are used to describe what kind of object
> >> a relocation refers to, such as a foreign function in a DLL (dlsym), a
> >> word entry point (entry-point-*), the current address (here), etc.
> >>
> >> -Joe
> >>
> >>
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