clone syscall interface on sparc64

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Hi!

I'm currently looking into fixing a testsuite failure in systemd on sparc64.

For that, I need to fix how the clone syscall is invoked on sparc64 since the
systemd code makes wrong assumptions about that.

>From the clone manpage [1]:

   blackfin, m68k, and sparc
       The argument-passing conventions on blackfin, m68k, and sparc are
       different from the descriptions above.  For details, see the kernel
       (and glibc) source.

I have been browsing through the kernel sources and glibc, but I couldn't really
find a clue which would help me to understand how clone() is properly invoked
on sparc64.

Does anyone have a hint?

Thanks,
Adrian

> [1] http://man7.org/linux/man-pages/man2/clone.2.html

-- 
 .''`.  John Paul Adrian Glaubitz
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`. `'   Freie Universitaet Berlin - glaubitz@xxxxxxxxxxxxxxxxxxx
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