Re: ARM long branch stub: thumb

[Christophe LYON <christophe dot lyon at st dot com>]

On 19.02.2009 18:43, Paul Brook wrote:
> > > Waitaminute. This code is completely bogus.
> > Indeed!
> > Actually, I merely tried to adapt the existing "Thumb->(non-interworking
> > aware) ARM" glue. If you look at the comments just above
> > arm_allocate_glue_section_space(), you'll see that the existing glue
> > creates a frame... oops.
>
> The "non-interworking aware" veneers are something completely different, and 
> documented to not work in many cases.

Sorry, I'm still a bit confused. (I'll confess that I find all the 
interworking-related corner cases uneasy to understand as it is 
documented in so many places but each time from a different perspective)

My intention is that the "long branch stubs" also support "short branch 
stubs" as they already handle Thumb/Arm mode switch. I think it would be 
more consistent to have only one scheme to insert all these stub variants.

So... what do you mean by "completely different"? I think I missed the 
documentation which warns about the cases which don't work. Do you have 
a reference?

Christophe.