Re: aapcs apcs-gnu

[trimarchi at gandalf dot sssup dot it]

Quoting Paul Brook <paul@codesourcery.com>:

> On Wednesday 15 March 2006 05:20, trimarchi@gandalf.sssup.it wrote:
> > Hi all,
> > what is the difference beetween this abi?
> > The standard arm procedure call is the first one. What is introduced in the
> > apcs-gnu? Is there some documentation about the last one?
>
> "apcs-gnu" is the pre-EABI calling convention. I believe it's based mainly on
> the RISCiX calling convention. There are many different variants of the APCS
> but AFAIK none of them particularly well documented. The best documentation
> for apcs-gnu is probably "whatever gcc generates".
>
> "aapcs" is defined in the ABi for the Arm Architecture (aka. EABI)
> http://www.arm.com/products/DevTools/ABI.html
>
> Paul

Ok,
but the default is to use the apcs-gnu instend of aapcs. Is it right? For
compatibility problem is usefull to forse the abi to the standard.

Regards
Michael


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