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Hierarchical reference not allowed from within a package.

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Hi All,
We are trying this kind of example. We are having two files of these. It's giving  "Hierarchical reference  not allowed from within a package." at    class1_instance.class1_function(.....)     class2_instance.class2_function(......)

I tried passing both classes as members of a structure. but it giving same error when accessing member class functions from structure.

What's the solution to access functions of these classes in Program main Blocks.

file1.sv
_______________________

program main;

class1 class1_instance;
class 2 class2_instance;
initial begin
    class1_instance=new;
    class2_instance=new;
    call_task_from_other_file(class1_instance, class2_instance);
end
endprogram


file2.sv
________________________
task call_task_from_other_file(class1 class1_instance, class2 class2_instance);
    class1_instance.class1_function(.....)
    class2_instance.class2_function(......)
endtask




Regards
Mayank


Originally posted in cdnusers.org by mayank
Parents

  • Hello Mayank,

    I looked at your second code example. IUS does not yet support declaring tasks/functions in the global space but you would be able to declare the forked_task task in the top module, the main program or in a package. The other issue I see with your code example is that the main program must use an initial block to call the forked_task.

    I hope this helps!

    Kathleen Meade

    Here is a modified version of your second code example that works on the IUS5.83-s3 release:

    interface intf1 (input logic clk);
    endinterface

    program main (intf1 intf1_instance);
    initial forked_task();
    endprogram

    module dut (intf1 intf1_instance);
    task dut_task;
    $display("I am in dut_task");
    endtask
    endmodule

    module top;
    reg clk;
    intf1 intf1_instance (clk);
    dut dut_instance (intf1_instance);
    main main_instance (intf1_instance);
    // this task can be declared in the program, the top module or in a package.
    task forked_task();
    dut_instance.dut_task;
    endtask
    endmodule


    Originally posted in cdnusers.org by kameade
Reply

  • Hello Mayank,

    I looked at your second code example. IUS does not yet support declaring tasks/functions in the global space but you would be able to declare the forked_task task in the top module, the main program or in a package. The other issue I see with your code example is that the main program must use an initial block to call the forked_task.

    I hope this helps!

    Kathleen Meade

    Here is a modified version of your second code example that works on the IUS5.83-s3 release:

    interface intf1 (input logic clk);
    endinterface

    program main (intf1 intf1_instance);
    initial forked_task();
    endprogram

    module dut (intf1 intf1_instance);
    task dut_task;
    $display("I am in dut_task");
    endtask
    endmodule

    module top;
    reg clk;
    intf1 intf1_instance (clk);
    dut dut_instance (intf1_instance);
    main main_instance (intf1_instance);
    // this task can be declared in the program, the top module or in a package.
    task forked_task();
    dut_instance.dut_task;
    endtask
    endmodule


    Originally posted in cdnusers.org by kameade
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