Function dr_insert_call_ex 

pub unsafe extern "C" fn dr_insert_call_ex(
    drcontext: *mut c_void,
    ilist: *mut instrlist_t,
    where_: *mut instr_t,
    encode_pc: *mut byte,
    callee: *mut c_void,
    num_args: uint,
    ...
) -> bool_

Identical to dr_insert_call() except it takes in \p encode_pc indicating roughly where the call sequence will be encoded. If \p callee is not reachable from \p encode_pc plus or minus one page, an indirect call will be used instead of the direct call used by dr_insert_call(). The indirect call overwrites the r11 register.

\return true if the inserted call is direct and false if indirect.