Does --relax work on mainline for H8/300H/H8S?

[Eric Christopher]

On Thu, 2003-09-04 at 09:33, Gary R Van Sickle wrote:
> I can't seem to get --relax to work on mainline ld + mainline gcc, at least
> on the H8

It worked on the ppc last time I used it, oh, say a month ago.

> cross.  All I get is a slew of "relocation truncated to fit" warnings from
> the linker.  It's been this way for quite a while now.
> 

Ouch.

> - What exactly does "relocation truncated to fit" mean anyway, and what
> other than an ld bug might cause it?  I can't find
> any documentation on this.

It means that the amount of data you are trying to put into a relocation
(addend) is larger than the amount of the relocation. think of trying to
stuff 16-bits into a space where you only have 8.

It is likely a bfd bug, but it could be a compiler/user bug if, for
example, the compiler is trying to generate a branch that even with
relaxation is going to overflow a branch relocation. (For example a 64MB
branch on ppc before we implemented branch stubs...)

> - Assuming this is a legit bug, what can I do to help diagnose and fix it?
> 
> I guess what I'm trying to say is that I don't know enough about what's
> going on here to generate a testcase, or I'd have submitted a proper bug
> report.

I hate finding these too. :)

Best thing is to figure out first, _which_ relocation is overflowing and
why. 

-- 
Eric Christopher <echristo@redhat.com>