This isn't right. Let's try again: The only reason to put something
under powerpc32/ is if it is more appropriate for there to be _no_
implementation on powerpc64. I assume powerpc64 supports __longjmp, so
you should just be creating sysdeps/powerpc/powerpc64/__longjmp.S.
No. Files are to be moved into powerpc32 if the files will never be
used on powerpc64. So, if there is a powerpc64 directory which has a
copy and there will be no other PPC architectures which is like
powerpc32 but sufficiently different to not be placed under powerpc32,
then the files should remain in powerpc. I cannot see this happening at
all so moving the files is OK.