[ECOS] ARM7TDMI Thumb Mode - STR71xF

[ECOS] ARM7TDMI Thumb Mode - STR71xF

[John Carter]

Thanks for remarkably prompt help with the Fedora synth question! I really 
appreciate that!

I'm looking at porting our code to a ST Micro STR71xF (it has ARM7TDMI 
core).

I used the packages/hal/arm/integrator and it all compiled OK.

Now I'm trying to compile it in thumb mode. Unfortunately the option is 
disabled in the .cdl (or more precisely, nothing in the arm/integrator cdl 
enables it)

Question 1) Is the arm/integrator HAL the best choice for the STR71xF MCU?

Question 2) If I hack/force/kludge things (probably in the CDL) until Ecos 
does compile in thumb mode (presumably with interworking on, so hopefully 
it will work with non-thumb assembler routines), will Ecos work?

Thanks,


John Carter                             Phone : (64)(3) 358 6639
Tait Electronics                        Fax   : (64)(3) 359 4632
PO Box 1645 Christchurch                Email : john.carter@tait.co.nz
New Zealand


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Re: [ECOS] ARM7TDMI Thumb Mode - STR71xF

[Andrew Lunn]

On Thu, May 05, 2005 at 11:49:05AM +1200, John Carter wrote:
> Thanks for remarkably prompt help with the Fedora synth question! I really 
> appreciate that!
> 
> I'm looking at porting our code to a ST Micro STR71xF (it has ARM7TDMI 
> core).
> 
> I used the packages/hal/arm/integrator and it all compiled OK.
> 
> Now I'm trying to compile it in thumb mode. Unfortunately the option is 
> disabled in the .cdl (or more precisely, nothing in the arm/integrator cdl 
> enables it)
> 
> Question 1) Is the arm/integrator HAL the best choice for the STR71xF MCU?

Sorry, don't know.
 
> Question 2) If I hack/force/kludge things (probably in the CDL) until Ecos 
> does compile in thumb mode (presumably with interworking on, so hopefully 
> it will work with non-thumb assembler routines), will Ecos work?

It should do. Plenty of other ARM HAL's use thumb. I suggest you take
a look at them to see how thumb should be done. I suspect its just a
minor issue with CDL.

        Andrew

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