How to use the pycparserext.ext_c_parser.Asm function in pycparserext

def p_asm_2(self, p):
        """ asm_no_semi : asm_keyword LPAREN asm_argument_expression_list COLON \
                asm_argument_expression_list RPAREN
        """
        p[0] = Asm(p[1], p[3], p[5], None, None, coord=self._coord(p.lineno(2)))

def p_asm_1(self, p):
        """ asm_no_semi : asm_keyword LPAREN asm_argument_expression_list RPAREN
        """
        p[0] = Asm(p[1], p[3], None, None, None, coord=self._coord(p.lineno(2)))

def p_asm_3(self, p):
        """ asm_no_semi : asm_keyword LPAREN asm_argument_expression_list COLON \
                asm_argument_expression_list COLON asm_argument_expression_list \
                RPAREN
        """
        p[0] = Asm(p[1], p[3], p[5], p[7], None, coord=self._coord(p.lineno(2)))

def p_asm_4(self, p):
        """ asm_no_semi : asm_keyword LPAREN asm_argument_expression_list COLON \
                asm_argument_expression_list COLON asm_argument_expression_list \
                COLON asm_argument_expression_list RPAREN
        """
        p[0] = Asm(p[1], p[3], p[5], p[7], p[9], coord=self._coord(p.lineno(2)))