gcc 2.91.66 and PPC

[Albert Niessner]

I am not highly conversant in PPC assembly, but it looks as though it is using
the 26 bit relative calls. This leads to the next question: How do I force it
to always use long calls instead? On an older release of the compiler, a
-mlongcall option was supported. That no longer exists or at least I get an
unknown option '-mlongcall' from the 2.91.66 compiler.

Al Niessner


Eric DeVolder wrote:

> i believe the answer is that it does use 26 bit ip-relative calls. however,
> you can verify the behavior of the gcc by using "objdump -dr fn.o" and look
> at the assembly output of the object file to see exactly...or "gcc -S" to
> get assembly language output...
>
> Albert Niessner wrote:
>
> > I need to find out how to determine if the gcc 2.91.66 is using 32 for
> > all calls or if it is optimizing and generating 26 bit direct calls when
> > it can. Where would I look to determine this? Does someone already know?
> >
> > Any and all help is appreciated.
> >
> > Al Niessner