Indirect functions not being resolved in libraries

[Frank Ch. Eigler]

alexander.hoole wrote:

> [...]
> Has anyone tried to put probe points on libraries where the function is
> defined in the symbol table as an indirect function?  
> [...]
> process("/lib64/libc-2.17.so").function("gettimeofday") { log("TEST") }
> semantic error: no match

That's a tricky situation.  The IFUNC resolves on my box to a
kernel-provided vdso symbol, but the runtime task_finder_* stuff does
not track the vdso's address, so even

probe process("/lib/modules/.../vdso/vdso.so").function("gettimeofday") {}

wouldn't fire, since that vdso.so will not appear to be loaded.  We
may be able to fix that though.

- FChE