[PATCHv2 2/2] gas/opcodes: Add initial arc nps400 support

[Nick Clifton]

Hi Andrew,

On 15/03/16 14:04, Andreas Schwab wrote:
> The custom insns should always be supported, controlled by an -m option.

Exactly - this is the point that I was trying to get at.  (But failing spectacularly
due to my fuddled brain).  Supporting extra instructions should be an option
(to the assembler and disassembler), and possibly protected by a flag bit somewhere
(eg the ELF header) in order to avoid mixing nps400 object files with non nps400 
object files.

I know that I have just posted an approval of your patch, but I would much rather
that you did not follow up on that, and instead looked at the possibility of handling
the extension as indicated above.

Cheers
  Nick