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Re: Thumb, new EABI and STT_ARM_TFUNC


On Mon, Jul 04, 2005 at 01:44:04PM +0100, Jonathan Larmour wrote:
> Personally, I'm going to kludge GDB to notice the low bit being set in the 
> symbol address, so I'm okay. But I thought in general that old ABI 
> behaviours are normally preserved with a flag (or at worst a CPP macro) 
> for a while. Is this the only ABI incompatibility introduced? I'm prepared 
> to put in a little time to add such a flag if people think it should 
> really be there, but I'd need to know more about the ABI differences and 
> incompatibilities.

See the list archives for this change:

On Thursday 18 November 2004 20:03, Richard Earnshaw wrote:
> As to the issue of backward compatibility, there shouldn't be a problem
> in binutils, they will just do the appropriate transformation when
> reading in object files.  As for other tools, then I think they are just
> going to have to get used to the new form.  It is better that functions
> really are tagged with STT_FUNC rather than a machine-dependent value,
> and Thumb-ness really isn't that special.

There were still plenty of tools around that didn't like STT_ARM_TFUNC. 
Either way someone loses; I recommend just fixing your GDB and going on
with your day.

-- 
Daniel Jacobowitz
CodeSourcery, LLC


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