unwind support for Linux 2.6 vsyscall DSO

[Jim Blandy]

Daniel Jacobowitz <drow@mvista.com> writes:
> The problem with using SOLIB_ADD for this is that we can't SOLIB_ADD
> safely till we hit the dynamic linker breakpoint, but it would be
> _really_ nice to be able to load this object right after the inferior
> starts (and for static binaries, etc etc).  How would you suggets we do
> that?

Well, look, the whole association with SOLIB_ADD at all was just based
on the intuition that "Hey, this vsyscall thing is like a shared
library!"  Nothing more profound than that.  So if it turns out that
sticking with SOLIB_ADD makes things complicated, then it'd be much
better to just add calls to the core, attach, and run code, or
whereever else is appropriate, that does things exactly the way you
want.