is a TARGET_READ_SP then that can be used.  */
is a TARGET_READ_SP, then that can be used.  */
frame_sp_unwind (struct frame_info *next_frame){  /* Normality, an architecture that provides a way of obtaining any     frame inner-most address.  */  if (gdbarch_unwind_sp_p (current_gdbarch))    return gdbarch_unwind_sp (current_gdbarch, next_frame);  /* Things are looking grim.  If it's the inner-most frame and there     is a TARGET_READ_SP then that can be used.  */  if (next_frame->level < 0 && TARGET_READ_SP_P ())    return TARGET_READ_SP ();  /* Now things are really are grim.  Hope that the value returned by     the SP_REGNUM register is meaningful.  */  if (SP_REGNUM >= 0)    {      ULONGEST sp;      frame_unwind_unsigned_register (next_frame, SP_REGNUM, &sp);      return sp;    }  internal_error (__FILE__, __LINE__, "Missing unwind SP method");}