[ECOS] How is symbol "__thumb__" defined? Thanks a lot

[Jonathan Larmour]

Eric de Jong wrote:
>>>   I am trying to find out whether the kernel and the apps can run in thumb
> 
> mode
> 
> Yes, the ecos can work in arm thumb mode. With the configtool select the thumb
> option AND add -mthumb to the compiler flag

If you mean the eCos compiler flags, that should happen anyway but I see 
it doesn't for a few targets so I've submitted a bug.

> But... I did not get the debug stub working in thumb mode.
> What does work is compiling redboot with the interwork flag enabled. It can then
> load and debug your thumb application (which must have interwork enabled then!)

Actually I don't think we've ever supported building the monitor itself in 
thumb mode, probably mostly because there's a lot of stuff that _has_ to 
be run in ARM mode in a ROM monitor. There should probably be some 
explicit CDL for that - I'll submit a patch.

Jifl
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