Fix linking of .gpdword on MIPS

[Daniel Jacobowitz]

On Mon, Feb 26, 2007 at 10:47:28PM +0000, Richard Sandiford wrote:
> But that isn't true on MIPS; r_symndx is also zero the second
> and subsequent entries in a composite relocation, when the addend
> is carried over from the result of the previous relocations.

Sorry.

> Are we really confident that this is the only exception, and that true
> relocations against symbol zero will not reach here?  If so, I think
> the patch below is the correct fix.  If not, it seems dangerous to
> explicitly ignore what I understand to be correct semantics,
> and treat S + A as zero simply because S is zero.

It's the right thing to do if the comment accurately described the
check.  I was as thorough as I could be checking my assumptions, but
obviously not thorough enough.  Does HJ's patch help?

-- 
Daniel Jacobowitz
CodeSourcery