* h8300.c (interrupt_handler): Renamed from pragma_interrupt.
        All references changed.
        (function_prologue): Set interrupt_handler if the current
        function has the "interrrupt-handler" attribute.
        (small_call_insn_operand): New function.
        (h8300_interrrupt_function_p): New function.
        (h8300_funcvec_function_p): New function.
        (h8300_valid_machine_decl_attribute): New function.
        * h8300.h (VALID_MACHINE_DECL_ATTRIBUTE): Define.
        * h8300.md (call insns): Handle calls through the
        function vector.  Indirect calls and calls through
        the function vector have a length of two bytes.

From-SVN: r11650