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RE: ABI, I don't get it...
> From: Maciej W. Rozycki [mailto:firstname.lastname@example.org]
> Subject: Re: ABI, I don't get it...
> On Sun, 14 Aug 2016, Paul_Koning@Dell.com wrote:
> > > with a toolchain that was supposedly 64-bit native, hard-float. Why
> > > the floating point selection is soft, I cannot say.
> > Perhaps because some other MIPS64 machines don't have float? The
> > Sibyte series comes to mind. We use soft-float for that reason, even
> > though XLR and XLP do have it.
> FYI, the SiByte/Broadcom SB-1 processor cores do have an FPU albeit IIRC
> early (A0?) steppings had fatal errata making the unit less than usable
> (they also had other issues making them usable even less). This may have
> been the reason you have chosen a software configuration which avoids the
> use of the FPU with these processors. Later revisions were fine. I've
> used the FPU with a B2 stepping SB-1 myself with no issues; there was a
> later C0 revision as well.
Not sure what that processor is. This one is the Broadcom/NetLogic XLP
which have fairly high-end gpu's as the FPU on each core. Fairly slick
processor and supposedly a powerhouse number cruncher.
I would not think that the NetLogic flagship (the main draw being the FPU)
would have issues like this -- though, who knows!
Thanks for the info!
> Ralf (cc-ed) may remember a bit more about the story here.