[parisc-linux] Re: call_init in libc6 2.3.6.ds1-11

[John David Anglin]

> > While it's possible that DT_INIT and DT_FINI shouldn't point at function
> > descriptors, the above hack can't be right since DL_DT_INIT_ADDRESS is used
> > for calling init() from dl-init.c:
> >
> >       init_t init = (init_t) DL_DT_INIT_ADDRESS
> >         (l, l->l_addr + l->l_info[DT_INIT]->d_un.d_ptr);
> >
> >       /* Call the function.  */
> >       init (argc, argv, env);
> 
> We might have been lucky in that init () called another function which
> setup r19 for us before we accessed data. I agree completely that r19
> should be set to the r19 of the module before calling init(), even if
> it *is* or *isn't* a function descriptor.
> 
> I wrote dl-lookupcfg.h, and the code you see there is legacy. I
> carried it forward without understanding what it meant.

It may be that special care is needed for applications that are
statically linked.

Dave
-- 
J. David Anglin                                  dave.anglin at nrc-cnrc.gc.ca
National Research Council of Canada              (613) 990-0752 (FAX: 952-6602)