[Balloon] Re: Thumb?

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Author: Wookey
Date:  
To: balloon
Subject: [Balloon] Re: Thumb?
On 2006-11-13 13:10 -0000, Steve Wiseman wrote:
> Being nosy - how much Balloon stuff is compiled for thumb mode?


Currently none, I should think. The existing arm-linux ABI does not
support amr/thumb interworking. You can mix them but only at program
granularity (IIRC)

The forthcoming EABI (arm-linux-gnueabi or armel in debian) allows
thumb interworking at the function granulatity level (but currently
only on arm v4t or later (i.e. not including strongarm (v4)). We
intend to fix up the debian toolchain so that this works on v4 as
well, but that decision is not cast in stone (and the toolchain work
still needs doing).

So right now, nearly all arm-linux stuff doesn't use thumb at all, and
I'm not sure anyone outside mobile-phone world is even asking for it.
It is likely to get significantly more popular in the future, from my
reading of the tea-leaves, once EABI makes it easy to use.

Wookey
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