RFC: Add GNU_PROPERTY_NEED_PHDRS
Tue Oct 2 15:44:00 GMT 2018
On Tue, Oct 2, 2018 at 8:38 AM Michael Matz <email@example.com> wrote:
> On Tue, 2 Oct 2018, H.J. Lu wrote:
> > > Yes, and it's a hack. This section isn't necessary, it merely is the
> > > easiest (?) way you found to force ld to create the PT_LOAD segment
> > > you want. What about linker scripts that filter out all .note
> > > sections? You _still_ want the phdrs to be mapped in that case. You
> > > basically replace the current state (where the phdrs are mapped by
> > > accident) with a different state that still only works by accident.
> > > It would be better to make this work by design not accident.
> > If linker script discards a section, all bets are off. Anything can
> > happen.
> I disagree, but even if I'd agree your solution still is more accidental
> than by design. You want to guarantee something about program headers, so
> any solution that doesn't do anything specific about/with program headers
> is similarly accidental.
Nothing is guaranteed when linker script is used since anything can happen
with linker script.
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