[PATCH] Implement PMC errata for MIPS

[Moore, Catherine]

> -----Original Message-----
> From: Richard Sandiford [mailto:rdsandiford@googlemail.com]
> Sent: Wednesday, November 13, 2013 3:41 PM
> To: Moore, Catherine
> Cc: binutils@sourceware.org
> Subject: Re: [PATCH] Implement PMC errata for MIPS
> 
> "Moore, Catherine" <Catherine_Moore@mentor.com> writes:
> > This patch adds support for the -mfix-pmc option in binutils.  Does
> > this look okay to install?
> 
> Looks good, thanks, but please run the testsuite for both a mips*-elf and a
> mips*-linux-gnu target.  mips*-linux-gnu aligns the text section to 16 bytes,
> and since the tests don't end on a 16-byte boudnary, they're likely to have
> more nops (or "..." instead of nops).
> 
> One of the things you're testing is that we correctly add 3 nops after a final
> DMULTU, which is good, and definitely someting we should keep.
> That means we don't want to add .space to the end or use #pass, which are
> the usual ways of handling the alignment difference.  I think the best thing
> would be to add:
> 
> 	.section .text2, "ax", @progbits
>         .align   2
> 
> to the beginning of both tests so that we can pick our own alignment.

I've now made this change, plus I've changed the -mfix-pmc option to mfix-rm7000.

> 
> There also needs to be some documentation in as.texinfo and c-mips.texi.
> 

Now done.

OK?

Thanks,
Catherine
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