[patch][0/5] powerpc V2 : Add support to fully comply with IEEE-754 standard

[Zhu Ebony-r57400]

> -----Original Message-----
> From: Kumar Gala [mailto:galak at kernel.crashing.org] 
> Sent: Friday, February 09, 2007 1:19 AM
> To: Zhu Ebony-r57400
> Cc: paulus at samba.org; linuxppc-dev at ozlabs.org
> Subject: Re: [patch][0/5] powerpc V2 : Add support to fully 
> comply with IEEE-754 standard
> 
> 
> On Feb 8, 2007, at 2:08 AM, Zhu Ebony-r57400 wrote:
> 
> >>>>
> >>>> Did you end up getting testfloat running?  I'd like to see some 
> >>>> testing results before accepting these patches.  I think
> >> testfloat is
> >>>> our best bet at this point.
> >>>>
> >>> Hi Kumar,
> >>>
> >>> I looked into the testfloat suit, and found all the 
> instructions it 
> >>> tests (more than 50)should be implemented based on ASM.
> >>
> >> Don't follow?  Can't you build it with the e500 compiler?
> >>
> > The TestFloat suite provided the target of 386-Win32-gcc and 
> > SPARC-Solaris-gcc only, and a template for user to porting his own 
> > processor. Some general instructions are implemented in C, but some 
> > CPU specific instructions like evfsmul need to be implemented 
> > assemblely. To build it with e500 compiler we still Have 
> some porting 
> > work to do.
> 
> I wouldn't worry too much about the vector forms.  If the 
> scalar single fp and double fp test out ok the vectors are 
> pretty much similar enough.
> 
> Lets just get the scalar versions tested and work out any 
> issues there.
> 
> - k

OK, I will focus on scalar SFPF and DPFP versions first.