I try to import some C-function that generates an array in SystemVerilog.
Here is code:
#include "svdpi.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
void getPacket(int packetSize, svOpenArrayHandle fpSig, svOpenArrayHandle err)
{
int* cfpSig = (int*) calloc(packetSize, sizeof(int));
double* cerr = (double*)calloc(packetSize, sizeof(double));
for(int i = 0; i < packetSize; ++i)
{
cfpSig[i] = i;
cerr[i] = 1.1*i;
printf("%d %f\n",cfpSig[i],cerr[i]);
}
printf("----------");
memcpy((int*) svGetArrayPtr(fpSig),cfpSig,packetSize);
memcpy((int*) svGetArrayPtr(err),cerr,packetSize);
free(cfpSig);
free(cerr);
}
import "DPI-C" function void getPacket(input int packetSize,
output int fpSig[], output real err[]);
module top();
initial begin
parameter int packetSize = 4;
int fpSig[packetSize];
real err[packetSize];
getPacket(packetSize,fpSig,err);
for(int i = 0; i < packetSize; ++i) begin
$display("fpSig: %d\nerr : %f",fpSig[i],err[i]);
end
end
endmodule
But when I compile the c-code manually, an error is generated at the linking stage: undefined reference to 'svGetArrayPtr'
.
I have not previously worked with svOpenArrayHandle and it was enough to connect the header file "svdpi.h". I tried to look for some svdpi.dll lib in the questa install folder, but didn't find it.
If I compile c-file by vlog it's working fine, but I want to compile it manually because I plan to include matlab libs and compiling via vlog will become uncomfortable.
In Questasim simulator, the library containing the svGetArrayPtr
symbol is mtipli.dll