> Here's what I think needs doing:
> 
> * (gcc) Support for mode-independent code (checking mode when we need to
>   generate PC from R15).

Not a major job.  Keep badgering me :-)

> * (gcc) Combined config/arm/netbsd-elf.h (mostly a copy of netbsd26.h)
> * (gas) Support for ARM ELF PIC relocations (didn't work last time I
>   checked)

Probably requires binutils 2.10.x

> * (ld.elf_so) Support for ARM ELF
> * (ld) More sensible ARM ELF linker script (e.g. with separate text and
>   data segments)

Again, this can probably be lifted largely from binutils 2.10 linker.

> 
> > A while back you mentioned updating the ABI to something newer, which can do 
> > thumb, arm26 and arm32 (or is that a bit like the holy grail of arm 
> > processors :), do you have on docs on this or pointers to docs?  Would the 
> > ARM linux abi work?
> 
> ARM Linux has different compiler configurations for ARMv2 and ARMv3, so
> it's probably not the best of things to imitate.  I don't claim to
> understand Thumb interworking.

It would be cool to support ARM linux binaries with the appropriate shared 
libs and emulations.  With some work it might even be possible to make 
ARMv2 binaries run on most machines.  ARMv3 binaries might or might not be 
runnable on the old acorn machines, but you never know, it largely depends 
on whether they have to be loaded at impossible addresses.

Richard.