57     nop_instruction_code        = 0x90,

    57     nop_instruction_code        = 0x90,

    58     nop_instruction_size        =    1

    58     nop_instruction_size        =    1

    59   };

    59   };

    60 

    60 

    61   bool is_nop()                        { return ubyte_at(0) == nop_instruction_code; }

    61   bool is_nop()                        { return ubyte_at(0) == nop_instruction_code; }

    63   inline bool is_call();

    62   inline bool is_call();

    64   inline bool is_illegal();

    63   inline bool is_illegal();

    65   inline bool is_return();

    64   inline bool is_return();

    66   inline bool is_jump();

    65   inline bool is_jump();

    67   inline bool is_cond_jump();

    66   inline bool is_cond_jump();