Debug and error messages in AIXv3 device drivers...

[Marc Kwiatkowski {Host Software-AIX}]

To answer my own question, sort of, it seems to me that it might be
possible to get around the absence of vsprintf by calling _doprnt
directly.  Disassembling the kernel version of _doprnt leads me
to believe that the parameter list is as follows:

     int
     _doprnt(fmt, ap, ptr)
     char *fmt
     va_list *ap
     char *ptr;

ptr is not a pointer to a FILE handle, but merely the
buffer in which to place the formatted output, thus
it is merely a rearrangment of the sprintf parameter
list.  Can anyone comfirm this?

_doprnt is not exported in the standard /lib/kernex.exp export
file, so it is necessary to add it to a homebrewed kernex.exp.
I believe this will work, but I'll find out for sure soon
enough.


-- 
        Marc P. Kwiatkowski			Ultra Network Technologies
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