Re: [RFA/solib-svr4] use AT_BASE auxiliary entry to compute load base address

[Joel Brobecker <brobecker at adacore dot com>]

> and did not find any loaded libraries or else did not find the
> interpreter in the list.  That's strange and almost certainly
> indicates a bug that we should fix.  The loader should have
> been in the list at that point.  Maybe it has a different
> filename in the list than in .interp?

Hmmm, that does ring a bell. I think we discussed another symptom
of the same problem:

    (gdb) start
    Breakpoint 1 at 0x2d100: file a_test.adb, line 4.
    Starting program: /[...]/a_test
    warning: Temporarily disabling breakpoints for unloaded shared library "/usr/lib/ld.so.1"

(that was on gdb@ around Mar, 11th 2007)

> > I think that the problem is that we're computing the wrong base load
> > address in solib-svr4.c. As it turned out, there was a "TODO" hint
> > added by Daniel that suggested using the AT_BASE auxiliary entry.
> > The attached patch attempts to do that.
> > 
> > 2007-09-12  Joel Brobecker  <brobecker@adacore.com>
> > 
> >         * solib-svr4.c: Add include of "auxv.h".
> >         (enable_break): Use the AT_BASE auxiliary entry if available.
> >         * Makefile.in (solib-svr4.o): Update dependencies.
> 
> This patch, independently, is a good idea and I'm glad you did it.
> It's OK.

Thanks. Checked in.

-- 
Joel