llvm dev - Feb 2005 - [LLVMdev] SparcV9 casa instruction

>From: Misha Brukman <brukman at uiuc.edu>  
>On Fri, Feb 25, 2005 at 04:33:34PM -0600, Brent Monroe wrote:
>> I need to implement the compare and swap instruction in the
>> Sparc backend.  It has the form:
>> 
>> casa [reg]imm, reg, reg
>If you look in the instruction manual, each instruction has a
>"format" which is F1, F2, F3 or F4, so your instruction needs
>to inherit from one of those base classes and designate where
>its operands map in the instruction.  Just pick an 
>instruction in the same group and see how it's encoded in the
>.td file, and follow the same format.
It seems casa and casax are the only two instructions in their
group.  Could you point me towards where I can look up these
instruction formats?

Brent

Brent,

A little googling found this:

onesearch.sun.com/search/clickthru?qt=+casa+SPARC+instruction&url=http://developers.sun.com/solaris/articles/sparcv9.pdf&pathInfo=/onesearch/index.jsp&hitNum=1&col=all

Its a pdf with the complete SPARC v9 instruction set details. What you
want is on page 152.

Reid.

On Fri, 2005-02-25 at 18:09, Brent Monroe wrote:
> >From: Misha Brukman <brukman at uiuc.edu>  
> 
> >On Fri, Feb 25, 2005 at 04:33:34PM -0600, Brent Monroe wrote:
> >> I need to implement the compare and swap instruction in the
> >> Sparc backend.  It has the form:
> >> 
> >> casa [reg]imm, reg, reg
> 
> >If you look in the instruction manual, each instruction has a
> >"format" which is F1, F2, F3 or F4, so your instruction needs
> >to inherit from one of those base classes and designate where
> >its operands map in the instruction.  Just pick an 
> >instruction in the same group and see how it's encoded in the
> >.td file, and follow the same format.
> 
> It seems casa and casax are the only two instructions in their
> group.  Could you point me towards where I can look up these
> instruction formats?
> 
> Brent
> 
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