I am also interested in instrumenting the guest binary, as well as change which guest function I execute at run time. So LD_PRELOAD won't help me here.
On Tue, Mar 3, 2020 at 10:41 AM John Reiser <jrei...@bitwagon.com> wrote: > > > I am trying to make a tool that intercepts the call to main, and then > > call an arbitrary function within the guest with arbitrary function > > arguments. > > This can be done without valgrind by using LD_PRELOAD environment variable > and RTLD_NEXT (see "man dlsym"): > > LD_PRELOAD=main_interceptor.so ./my_app args... > > where main_interceptor.so is a shared library that has a function main() > and that can call the original main() by using dlsym(RTLD_NEXT, "main"). > > > > > > > > _______________________________________________ > Valgrind-users mailing list > Valgrind-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/valgrind-users -- Derrick McKee Phone: (703) 957-9362 Email: derrick.mc...@gmail.com _______________________________________________ Valgrind-users mailing list Valgrind-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/valgrind-users
