>> Please pull from 'for_paulus' branch of
>>
>> master.kernel.org:/pub/scm/linux/kernel/git/galak/powerpc.git
>> for_paulus
>
> Unfortunately with those commits I get this when compiling for a
> 64-bit target:
>
> {standard input}: Assembler messages:
> {standard input}:668: Error: Unrecognized opcode: `sldi'
[etc.]
> It turns out that with Arnd's patches we now get "-mcpu=powerpc64" on
> the command line, and that means that gcc *doesn't* put "-mppc64" the
> as command line, and as barfs on the 64-bit instructions. That's
> presumably a gcc bug, but we'll have to work around it.
It is not. -mcpu=powerpc64 doesn't select an ABI, and your
GCC presumably defaults to the 32-bit ABI. Use -m64 on the
GCC command line, too, you need it, and it solves this issue
as a side effect.
It would be a bug if GCC would allow 64-bit insns in the
32-bit ABI for Linux, but that is currently not the case :-(
> I think the
> best thing is just to not put the -mcpu=powerpc64 in CFLAGS when no
> specific CPU is selected.
That would be the "use the compiler default CPU" option.
Segher
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