Aucbvax.4860
fa.unix-wizards
utzoo!decvax!ucbvax!unix-wizards
Sat Oct 31 17:56:24 1981
Re: shared libraries
>From decvax!duke!unc!smb@Berkeley Sat Oct 31 17:44:47 1981
In-real-life: Steven M. Bellovin
Shared libraries can be implemented fairly cleanly, at the cost of
branching through a transfer vector. That is, the first module of
the shared segment (and the only one directly addressable) contains
something like
int (*list)()[] = {
&printf,
&scanf,
NULL,
&ctime,
...
The order in this list would be fixed for all time, and the routine
actually linked in would branch indirectly through the start of
the shared module plus the proper offset.
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