Christophe Leroy <christophe.le...@c-s.fr> writes: > Le 21/08/2019 à 14:15, Segher Boessenkool a écrit : >> On Wed, Aug 21, 2019 at 01:50:52PM +0200, Christophe Leroy wrote: >>> Do you have any idea on how to avoid that bcl/mflr stuff ? >> >> Do a load from some fixed address? Maybe an absolute address, even? >> lwz r3,-12344(0) or similar (that address is in kernel space...) >> >> There aren't many options, and certainly not many *good* options! >> > > IIUC, the VDSO is seen by apps the same way as a dynamic lib. Couldn't > the relocation be done only once when the app loads the VDSO as for a > regular .so lib ?
How does address space randomization work for .so libs? > > It looks like it is what others do, at least x86 and arm64, unless I > misunderstood their code. > > Christophe
