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[Fwd: Re: [PATCH] MIPS32 DSP instructions again]

Nigel Stephens nigel@mips.com
Tue Jun 14 22:03:00 GMT 2005 
Eric Christopher wrote:

>>At the end of the day, you need to know the assembly language of
>>the target you're coding for.  And from what I've seen of the DSP
>>instructions, remembering to call the registers "$acX" is probably
>>going to be the least of your worries. ;)
>>    
>>
>
>Heh. OK. I'll bow to the pressure :) I do wish they'd asked first.
>  
>

Hmm. The MIPS architecture is owned and defined and by MIPS 
Technologies, and although we love the GNU community dearly, we aren't 
beholden to it - at least as far as the architecture and instruction set 
definitions are concerned. Indeed we have to maintain toolchain 
neutrality in light of the fact that we work with a number of compiler 
vendors, as well as GNU.

Just FYI, although the detailed specification of the MIPS DSP ASE is not 
yet published, there is a short presentation which describes some of its 
major features. See 
http://www.mips.com/ProductCatalog/P_DSPASE/content/PressRoom/PressKits/files/dsp_presentation.pdf 
page 11 onwards. Enjoy! ;-) 
<http://www.mips.com/content/Products/Architecture/dspase/ProductCatalog/P_DSPASE/productBrief>

Nigel
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