Patch to add -mfp32 support to MIPS gas

[Thiemo Seufer]

Richard Sandiford wrote:
[snip]
> OK, I've attached a revised patch below.  I think it makes more sense than
> the original (thanks again for the feedback).  The new patch only adds
> -mfp32, not -mfp64; it doesn't include -mgp64 in the usage printout; and it
> uses 32-bit registers if -mabi=32 is given.
> 
> The test cases are the same as before, except that -EB should be passed to
> the assembler, and that there's now an extra abi32 case.  I haven't included
> them again since they're rather big.
> 
> Tested on mips-elf. mipsel-elf and mips64-elf.  OK to apply?

Looks good IMHO.


Thiemo