ARM mapping symbols

[Richard Earnshaw]

> Hi Bruno,
> 
> >> > The last assembled section is often a data section, so the mapping
> >> > symbol is $d. Then arm_cleanup is called and the literal pool(s)
> >> > is(/are) written. As the last symbol already was $d, no new symbol
> >> > is added... 
> >> 
> >> Ok - but this is easily fixed by calling arm_elf_change_section()
> >> after calling subseg_set() in arm_cleanup().  Then the correct-for-
> >> that-section mapping symbol will be emitted, which can then be changed
> >> by your patch to s_ltorg().
> >
> > I might be wrong again, but I believe this will add both a $d and a 
> > $a symbol? 
> 
> Yes - is this a problem ?  I know that it is not optimal, but I
> thought that it might be a simpler "quick hack" that adding a 'forced'
> argument to mapping_state().

Please lets not talk about "quick hacks".  Quick hacks have a tendency to 
breed, and before you know what's happening you have serious spaghetti to 
untangle.

Instead, lets work out what needs doing to fix this properly.

R.