How to connect systemverilog file with cplusplus(.cpp) file using dpi

SystemVerilog
,
1

Hello,

I have imported .c file in .sv(systemverilog) file using dpi and its runs
now i want to import .cpp file in .sv file using dpi
explain it with a simple example based on class
Is there any changes in syntax for .cpp and .sv file connection using dpi
how to do that ?
help me

Thanks and regards

2

You cannot use the DPI to call class methods across the language boundary.

But if you can make your C++ code interface with C code, you can make it interface with SystemVerilog. See DPI C++ Exports | Verification Academy

3

I have below example for c++

#include <iostream>
using namespace std;

class Rectangle {
    int width, height;
  public:
    void set_values (int,int);
    int area () {return width*height;}
};

void Rectangle::set_values (int x, int y) {
  width = x;
  height = y;
}

int main () {
  Rectangle rect, rectb;
  rect.set_values (3,4);
  rectb.set_values (5,6);
  cout << "rect area: " << rect.area() << endl;
  cout << "rectb area: " << rectb.area() << endl;
  return 0;
}

i want to import this function in my systemverilog file So,what changes i have to do in my .sv file and .cpp file?

4

In reply to hirenpatel:

You cannot call a method of a C++ class from the SystemVerilog DPI. Think of how you would call C++ from C. You need to call a non-class function, and that function needs to either construct the class before calling the class method, or have the class handle initialized before the function is called.

5

Can you please explain me with one little example ?
So, I can easily understand

6

In reply to hirenpatel:

OK, here are two example in one testcase. There are probably many more ways of doing this, but I hope this gives you the basic ideas of how to map to class objects.
cpp.tar.gz (2.1 KB)

7

In reply to dave_59:

Thx i Understood it