You are working on a software project that utilizes SystemVerilog (SV) for hardware design and verification. One important aspect of working with SV is handling dynamic arrays using the `svOpenArrayHandle` data type. Your task is to implement three functions: `svGetArrElemPtr1`, `svGetArrElemPtr2`, and `svGetArrElemPtr3`, which will help in accessing individual elements of a dynamic array.

The function `svGetArrElemPtr1` takes two arguments: a `svOpenArrayHandle` named `h` representing the dynamic array, and an integer `indx1` representing the index of the desired element. It should return a pointer to the specified element.

The function `svGetArrElemPtr2` is similar to `svGetArrElemPtr1`, but it takes an additional argument `indx2`. The `indx1` and `indx2` parameters represent the indices of a two-dimensional dynamic array. Similarly, `svGetArrElemPtr2` should return a pointer to the specified element.

The function `svGetArrElemPtr3` is an extension of `svGetArrElemPtr2` and takes an additional argument `indx3`. The `indx3` parameter represents the index of a three-dimensional dynamic array. `svGetArrElemPtr3` should return a pointer to the specified element.

**Note: The functions should return `nullptr` for invalid indices. Assume that indices are zero-based, meaning the range of valid indices is from 0 to (dimension size - 1).**

Your task is to implement the three functions described above: `svGetArrElemPtr1`, `svGetArrElemPtr2`, and `svGetArrElemPtr3`.
user
Sure, I can help you with that. Here's how you can implement the three functions you described in SystemVerilog:

```
`timescale 1ns/1ps

module Test;

  reg [7:0] addr1, addr2, addr3;
  wire  [7:0] value1, value2, value3;
  initial begin
    // Initialize values in dynamic array
    addr1 = 0; value1 = 8'b0001010;
    addr1 = 1; value1 = 8'b001011;
    addr1 = 2; value1 = 8'b001100;
    addr1 = 3; value1 = 8'b001101;
    addr1 = 4; value1 = 8'b001110;
    addr1 = 5; value1 = 8'b001111;
    addr1 = 6; value1 = 8'b000111;
    addr2 = 0; value2 = 8'b000010;
    addr2 = 1; value2 = 8'b000110;
    addr2 = 2; value2 = 8'b001000;
    addr3 = 0; value3 = 8'b000001;
    addr3 = 1; value3 = 8'b000010;
    // Test function svGetArrElemPtr1
    addr1 = 2;
    $display("Element accessed: %b", svGetArrElemPtr1(addr1, &value1));
    // Test function svGetArrElemPtr2
    addr2 = 2;
    $display("Element accessed: %b", svGetArrElemPtr2(addr2, &value2));
    // Test function svGetArrElemPtr3
    addr3 = 1;
    $display("Element accessed: %b", svGetArrElemPtr3(addr3, &value3));
  end

  // Function to get pointer to first dimension
  function pointer svGetArrElemPtr1(arr_handle, addr_handle);
    output pointer;
    input svOpenArrayHandle arr_handle, addr_handle;
    integer indx1, dim_size1, base_addr1;
    assign {
      indx1 = extract_bits(addr_handle, 0, 6); // Assuming 7-bit indices
      dim_size1 = svGetDimSize(arr_handle, 0);
      base_addr1 = svGetBaseAddress(arr_handle, indx1);
      if ((indx1 >= 0) && (indx1 < dim_size1)) {
        address addr = base_addr1 + indx1 * 8; // Assume 8-bit values
        pointer = addr;
      } else {
        pointer = null();
      }
    }
  endfunction

  // Function to get pointer to second dimension
  function pointer svGetArrElemPtr2(arr_handle, addr_handle);
    output pointer;
    input svOpenArrayHandle arr_handle, addr_handle;
    integer indx1, indx2, dim_size1, dim_size2, base_addr2;
    assign {
      indx1 = extract_bits(addr_handle, 0, 6);
      indx2 = extract_bits(addr_handle, 7, 13);
      dim_size1 = svGetDimSize(arr_handle, 0);
      dim_size2 = svGetDimSize(arr_handle, 1);
      base_addr2 = svGetBaseAddress(arr_handle, indx1 + dim_size1 * indx2);
      if ((indx1 >= 0) && (indx1 < dim_size1) && (indx2 >= 0) && (indx2 < dim_size2)) {
        address addr = base_addr2 + (indx2 * 8); // Assume 8-bit values
        pointer = addr;
      } else {
        pointer = null();
      }
    }
  endfunction

  // Function to get pointer to third dimension
  function pointer svGetArrElemPtr3(arr_handle, addr_handle);
    output pointer;
    input svOpenArrayHandle arr_handle, addr_handle;
    integer indx1, indx2, indx3, dim_size1, dim_size2, dim_size3, base_addr3;
    assign {
      indx1 = extract_bits(addr_handle, 0, 6);
      indx2 = extract_bits(addr_handle, 7, 13);
      indx3 = extract_bits(addr_handle, 14, 20);
      dim_size1 = svGetDimSize(arr_handle, 0);
      dim_size2 = svGetDimSize(arr_handle, 1);
      dim_size3 = svGetDimSize(arr_handle, 2);
      base_addr3 = svGetBaseAddress(arr_handle, indx1 + dim_size1 * (indx2 + dim_size2 * indx3));
      if ((indx1 >= 0) && (indx1 < dim_size1) && (indx2 >= 0) && (indx2 < dim_size2) && (indx3 >= 0) && (indx3 < dim_size3)) {
        address addr = base_addr3 + (indx3 * 8); // Assume 8-bit values
        pointer = addr;
      } else {
        pointer = null();
      }
    }
  endfunction

endmodule
```

Note: These functions assume that the underlying hardware (memory) interface uses continuous addressing, where each element is a contiguous memory region. If this is not the case, you may need to modify the base address calculation accordingly. Additionally, the `svOpenArrayHandle` data type requires SystemVerilog 2012 or later, and `null()` is not a SystemVerilog keyword, but you can use an appropriate macro defined in your environment. Tracing is also not simulated here; you will need to incorporate it using a suitable testing style in your design.
assistant
You are working on a software project that utilizes SystemVerilog (SV) for hardware design and verification. One important aspect of working with SV is handling dynamic arrays using the `svOpenArrayHandle` data type. Your task is to implement three functions: `svGetArrElemPtr1`, `svGetArrElemPtr2`, and `svGetArrElemPtr3`, which will help in accessing individual elements of a dynamic array.

The function `svGetArrElemPtr1` takes two arguments: a `svOpenArrayHandle` named `h` representing the dynamic array, and an integer `indx1` representing the index of the desired element. It should return a pointer to the specified element.

The function `svGetArrElemPtr2` is similar to `svGetArrElemPtr1`, but it takes an additional argument `indx2`. The `indx1` and `indx2` parameters represent the indices of a two-dimensional dynamic array. Similarly, `svGetArrElemPtr2` should return a pointer to the specified element.

The function `svGetArrElemPtr3` is an extension of `svGetArrElemPtr2` and takes an additional argument `indx3`. The `indx3` parameter represents the index of a three-dimensional dynamic array. `svGetArrElemPtr3` should return a pointer to the specified element.

**Note: The functions should return `nullptr` for invalid indices. Assume that indices are zero-based, meaning the range of valid indices is from 0 to (dimension size - 1).**

Your task is to implement the three functions described above: `svGetArrElemPtr1`, `svGetArrElemPtr2`, and `svGetArrElemPtr3`.
user
Sure, here are the implementations of the three functions in SystemVerilog:

```systemverilog
function void* svGetArrElemPtr1(svOpenArrayHandle h, int indx1);
  if (indx1 < 0 || indx1 >= h.size()) return NULL;
  return h.get_element_ptr(indx1);
endfunction

function void* svGetArrElemPtr2(svOpenArrayHandle h, int indx1, int indx2);
  if (indx1 < 0 || indx1 >= h.size() || indx2 < 0 || indx2 >= h.get_element_handle(indx1).size()) return NULL;
  return h.get_element_handle(indx1).get_element_ptr(indx2);
endfunction

function void* svGetArrElemPtr3(svOpenArrayHandle h, int indx1, int indx2, int indx3);
  if (indx1 < 0 || indx1 >= h.size() || indx2 < 0 || indx2 >= h.get_element_handle(indx1).size() || indx3 < 0 || indx3 >= h.get_element_handle(indx1).get_element_handle(indx2).size()) return NULL;
  return h.get_element_handle(indx1).get_element_handle(indx2).get_element_ptr(indx3);
endfunction
```

These functions first check if the indices are valid. If any index is out of bounds, they return `NULL`. Otherwise, they use the `get_element_ptr` and `get_element_handle` methods of the `svOpenArrayHandle` class to access the desired element and return a pointer to it.
assistant