[Patch ARM Gas] - strexh/strexb warn for bad addressing modes.

[Nick Clifton]

Hi James,

> strexh and strexb do not have writeback modes in either arm or thumb
> mode. An unpatched assembler will return an error for the following
> under ARM, but not for thumb.
>
> 	strexh r1, r2, [r3, #0]!

Thanks - I understand now.  I have applied the patch.

Cheers
   Nick