Re: x86 double alignment (was egcs-1.1 release schedule)

[Martin Kahlert <martin.kahlert@mchp.siemens.de>]

Quoting Marc Lehmann (pcg@goof.com):
> On Thu, Jun 25, 1998 at 12:15:17PM -0400, Craig Burley wrote:
> > >The original patch turned on -mstack-align-double, which I thought is safe,
> > >but it isn't. I got a report from a windows user that it breaks most windows
> > >function semantics, as these functions deallocate the stack themselves. In
> > >this case, -mstack-align-double will break the program.
> > 
> > Wait, how can these functions deallocate the stack themselves when
> > the *caller* also is deallocating the stack, as is normally the
> 
> it isn't: __attribute__((stdcall)).
> 
> > case for x86-ABI code?  Aren't these functions essentially violating
> > the ABI in a way the compiler producing code that calls them *must*
> > know about?
> 
> the problem is we can't change the windows kernel. its a third-party
> product I'd really like to recompile ;)
> 

A small dummy question: Is it possible without big efford, 
to only align automatic (local) double vars 
and leave all function parameters untouched? So no ABI gets violatet.
Most time critical calculations aren't performed on stack doubles,
i would imagine.

Just a silly question.

Bye,
Martin.

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