Hi Alexander,
>I readed your article "PalmOS Shared-Library Globals". But I creating a
>shared library on the basis of regular apps.
I'm not sure what you mean by this. Are you creating a combined
app/shared library? Or do you want to create an app that uses
A4-globals?
>With a bit of hacking on the
>Metrowerks startup code i get global data, but i need to force compiler to
>generate code using for the reference to global data a register A4 instead
>of A5 (Mainly this necessary for initialize creating C++ objects reference
>to VTBL ). It's possible?
I believe so, but with a fair amount of work. I think you'd need to
create a project to build a multi-segment Mac code resource, then use
a prefix file to define __PALMOS_TRAPS__ to be 1. After that, you'd
have to modify the startup code to correctly initialize globals
(similar to what I did for globals in a shared library). If you want
to support multiple segments, then it gets more difficult. At some
point you might want to look at GCC's support for A4-based globals,
since I believe it's more sophisticated and easier to modify if it
doesn't do exactly what you want.
-- Ken
> > -----Original Message-----
> > From: Ken Krugler [mailto:[EMAIL PROTECTED]]
> > Sent: Thursday, May 17, 2001 1:36 AM
> > To: [EMAIL PROTECTED]
> > Cc: [EMAIL PROTECTED]
> > Subject: Re: A4 instead of A5
> >
> >
> > >Is it possible to force the compiler CW6 to use for the
> > reference to global
> > >data a register A4 instead of A5?
> >
> > If you're creating a shared library, then yes it's possible. With a
> > bit of hacking on the Metrowerks startup code you could probably also
> > make it work for regular apps.
> >
> > -- Ken
Ken Krugler
TransPac Software, Inc.
<http://www.transpac.com>
+1 530-470-9200
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