Re: Assembler problems

[Johan Klockars <rand@cd.chalmers.se>]

> 1) FPU instructions like FMOVE (and several other 68882 instructions as
>    well) aren't recognized by the compiler, while some of them are being
>    bought successfully. Will the 'new' gas solve it?

It sounds strange that your gas wouldn't handle FMOVE. That is after all
a necessary instruction when you want to use the FPU. Perhaps it's some
'040 specific version of FMOVE?

Anyway, there is a version of gas around that has worked fine with all
floating point stuff I've thrown at it (admittedly not that much, but
including '040 instructions). I'm not sure where I got it from, though.

> 2) The assembler module contains two functions, those need to be called
>    with register parameters. These are six pointers located in registers
>    A0-A5 and a short int value passed in the register D0. How to force
>    the compiler to load them to the appropriate registers before function

Standard gcc can't do register parameters at all.

As someone else suggested, use a wrapper or some inline assembly code.
You might find some examples of the latter in the standard headers and I
guess someone around here can probably show you how it's done. It's been
a long time since I did it myself, but I might be able to dig up something,
if necessary.

> The program I am talking about is not a Unix source, its from Amiga SAS C.
> 
> Thanks for any help (the program is *deadly* worth porting).

Any chance that it might be ShapeShifter?
Now _that_'s a program that should have been ported years ago!

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