Re: AMD64 ABI compatibility

[Jan Hubicka <hubicka at ucw dot cz>]

> Hi Kai,
> 
> so, could you resolve the remaining issues? Or have you kind of  
> paused the project?
> 
> Cheers,
> Nicolas
> 
> 
> On Jul 12, 2007, at 2:14 , Kai Tietz wrote:
> 
> >Hi,
> >
> >I am nearly through :) The remaining macros left to be ported are
> >REGPARM_MAX and SSE_REGPARM_MAX. The sysv_abi uses 6 regs and 8 sses,
> >ms_abi uses 4 regs and 4 sse registers. The problem is for example  
> >the use
> >in i386.md of SSE_REGPARM_MAX without any hint, how to choose the  
> >required
> >abi. Do you have an idea how this could be done ?

This shoul not be dificult - ix86_regparm is used in
ix86_function_regparm, init_cumulative_args, setup_incoming_varargs_64
functions.  In all those cases you know the function declaration and
thus you can take a look if it is call to different ABI and overwrite
the value.

Honza
> >
> >Cheers,
> > i.A. Kai Tietz
> >
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