{ }
{   The purpose of this request is to find the stack frame that will    }
{ return to a higher ring (i.e., the stack frame at the bottom of the   }
{ stack specified by starting frame).                                   }
{ }
{       TMP$FIND_RING_CROSSING_FRAME (STARTING_FRAME, FRAME, STATUS)    }
{ }
{ STARTING_FRAME: (input) This parameter specifies the frame at which   }
{       begin the search.  If the starting frame is NIL the search will }
{       begin with the caller's stack frame, otherwise, the search will }
{       begin with starting_frame.                                      }
{ }
{ FRAME: (output) This parameter specifies the stack frame at the bottom}
{       of the caller's stack.                                          }
{       NOTE: tmp$find_ring_crossing will always return a valid address }
{             in the frame parameter.                                   }
{ }
{ STATUS: (output) This parameter specifies the status of the request - }
{       stack frames are validated as the stack is searched; invalid    }
{       frames will cause abnormal status.                              }
{ }
