[PATCH] MIPS: microMIPS ASE support
Maciej W. Rozycki
macro@codesourcery.com
Mon Jul 26 13:53:00 GMT 2010
On Mon, 26 Jul 2010, Nathan Froyd wrote:
> > > Did you actually test this with n64, say with a gcc bootstrap? Same
> > > comment goes for elfn32-mips.c.
> > >
> > > Why only do the linker relaxation for elf32-mips.c (o32, o64 & EABI)?
> > > Why not for n32 and n64 too?
> >
> > The answer to all the questions is negative. There is no 64-bit
> > microMIPS hardware available at the moment. The best bet might be QEMU --
> > NathanF, have you implemented any of the 64-bit instructions in QEMU?
>
> I have implemented support for the 64-bit instructions in QEMU. I
> haven't really tested whether the instruction translation works
> correctly for those instructions. (It should; there's nothing unusual
> about the codepaths the 64-bit instructions take vs. their 32-bit
> counterparts...but you never know...)
OK, thanks. That's a good starting point, but still some low-level
startup files will need to be updated or at least examined for correct
64-bit microMIPS support before we can link executables suitable for
run-time testing such as with the GCC testsuite, let alone a full native
GCC bootstrap.
Maciej
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