[patch][5/5] powerpc: Add the general support for Embedded Floating-Point instructions

[Zhu Ebony-r57400]

> -----Original Message-----
> From: Segher Boessenkool [mailto:segher at kernel.crashing.org] 
> Sent: 2007年1月12日 20:37
> To: Zhu Ebony-r57400
> Cc: Christoph Hellwig; paulus at samba.org; linuxppc-dev at ozlabs.org
> Subject: Re: [patch][5/5] powerpc: Add the general support 
> for Embedded Floating-Point instructions
> 
> > CONFIG_SPE doesn't force the whole math emulation to be built. If 
> > CONFIG_SPE is set, only the new SPFP/DPFP/VSPFP instructions in 
> > arch/powerpc/math-emu will be built, while the previous FPU 
> > instructions won't.
> 
> And the other way around I suppose.
> 
> > Therefore, what I'm trying to do is to build directory 
> > arch/powerpc/math-emu if CONFIG_MATH_EMULATION or 
> CONFIG_SPE is set. 
> > Do you have any idea?
> 
> Maybe you should really have a separate CONFIG_SPE_MATH_EMU?
> Or that might complicate things more than it solves, dunno.
> 
> 
> Segher
> 
> 

If there is an statement that can express "CONFIG_MATH_EMULATION or
CONFIG_SPE", things would become simpler.

Ebony