"Collin Baillie" wrote:

> > If I'm not mistaken, the mips jump range is 256 MB. Your function is
> > larger than 256 MB??? How much memory do you have in your pmax, anyway?
> > ;-)

Err, that 256 MB should be 256 _kB_ for the branch instructions (or
65,536 instructions).  That could easily be reached in 20,000 lines of
code.

> Umm I haven't written this code :) It's actually the 'LDMud' driver package
> by Lars Düning. It's his updated version of the original LPMud driver.
> 
> The file in question here is interpret.c, which is some 20,000 lines long. I
> have no idea where I would even begin changing this code. Nor do I really
> know sufficient about MIPS assembly to start playing with the code. :(

Is this in NetBSD's pkgsrc, or elsewhere easily available?  I won't
promise a quick answer, but there may turn out to be a simple solution
if we're lucky :-)

> Maybe I'm showing my ignorance. Is $L3655 actually a registry/memory
> address? Or is it (as I assume) a label? If it's just a label, I don't see
> the connection with 256MB function limits etc, and it should merely be a
> case of moving the labelled section so that it was above all calls to it,
> and it should be fine.

It's a local label.  Picture a 20,000 line function like:

	int
	foo()
	{
		while (<some condition) {
			~20k lines of code here
		}
		return result;
	}

and the while loop would have a branch that needs to skip from near the
top of the function to near the bottom.  The target of the branch would
be a local label, of the form $L<number>.

Simon.
--
Simon Burge                            <simonb@wasabisystems.com>
NetBSD Support and Service:         http://www.wasabisystems.com/