Rajat Singh wrote:
>
> Is there a way to change the function return value coming in register d0 to
> come in reigster d7 ?
>
> I tried adding d7 in call_used_registers and updating
> macro's FUNCTION_VALUE and FUNCTION_VALUE_REGNO_P but it didnt work.
>
> I tried modifying hard_function_value function in explow.c but compilation
> failed at reload pass.
>
> I am trying to update the backend code for m68k.Any help is appreciated.
>

You should ask gcc folks about this.  gpc just builds
representation of Pascal program and passes it to gcc middle-end.
gpc does not deal directly with specific backends.  Note that
gpc calling convention is supposed to match C.  In other
words, you should first get your change working for a trivial
C program and only after it works for C start looking at
Pascal.  Normally, once it works for C is will automatically
start working for Pascal too.

--
                              Waldek Hebisch
hebisch@math.uni.wroc.pl