+ int is_elf = 0;
+
+ /* Given a function address, try to find the global pointer for the
+ corresponding shared object. */
+ CORE_ADDR (*find_global_pointer) (struct gdbarch *, struct value *) = nullptr;
+
+ /* For shared libraries, each call goes through a small piece of
+ trampoline code in the ".plt" section. IN_SOLIB_CALL_TRAMPOLINE
+ evaluates to nonzero if we are currently stopped in one of these. */
+ int (*in_solib_call_trampoline) (struct gdbarch *gdbarch,
+ CORE_ADDR pc) = nullptr;
+
+ /* For targets that support multiple spaces, we may have additional stubs
+ in the return path. These stubs are internal to the ABI, and users are
+ not interested in them. If we detect that we are returning to a stub,
+ adjust the pc to the real caller. This improves the behavior of commands
+ that traverse frames such as "up" and "finish". */
+ void (*unwind_adjust_stub) (struct frame_info *this_frame, CORE_ADDR base,
+ trad_frame_saved_reg *saved_regs) = nullptr;
+
+ /* These are solib-dependent methods. They are really HPUX only, but
+ we don't have a HPUX-specific tdep vector at the moment. */
+ CORE_ADDR (*solib_thread_start_addr) (struct so_list *so) = nullptr;
+ CORE_ADDR (*solib_get_got_by_pc) (CORE_ADDR addr) = nullptr;
+ CORE_ADDR (*solib_get_solib_by_pc) (CORE_ADDR addr) = nullptr;
+ CORE_ADDR (*solib_get_text_base) (struct objfile *objfile) = nullptr;