Re: [PATCH/RFC/RFA] Print in-memory struct return values

[Mark Kettenis <kettenis@chello.nl>]

   From: Andreas Schwab <schwab@suse.de>
   Date: Sun, 16 May 2004 00:12:39 +0200

   Mark Kettenis <kettenis@chello.nl> writes:

   >From the 68000 supplement:

       Functions Returning Structures or Unions

       As mentioned above, when a function returns a structure or union, it
       expects the caller to provide space for the return value and to place
       its address in register %a0.  Having the caller supply the return
       object's space allows re-entrancy.

       A function returning a structure or union also sets %a0 to the value
       it finds in %a0.  Thus when the caller receives control again, the
       address of the returned object resides in register %a0.  ...

Thanks Andreas.  That was what I was looking for.  Michael, are you
aware of any ABI documentation for the not-quite-SVR4 embedded m68k
targets?  Are those GCC only?

Mark