proc_getauxv
error = proc_getauxv(td, p, asb);
proc_getauxv(curthread, p, sb);
proc_getauxv(curthread, p, sb);
proc_getauxv(curthread, p, sb);
proc_getauxv(curthread, p, sb);
error = proc_getauxv(curthread, p, &sb);
int proc_getauxv(struct thread *td, struct proc *p, struct sbuf *sb);