SV DPI: veriusertfs

Hi Benni.

Two points I noticed, though maybe you found these already...

1) You should probably include "vxl_veriuser.h" which defines the s_tfcell struct.
2) On you gcc line, make sure you have "-I `ncroot`/tools/include" in order to search the IUS include directory.

If you want to test the sanity of your Unix environment, you could also try compiling one of the example PLI applications that come with IUS. Look in the `ncroot`/tools/examples/pli directory and follow the README files there.

Steve.

Thank you I forgot to inclode "vxl_veriuser.h".
Now the C file is compiled but I don't know how to do the link to C function, my C file is:

int myfopen()
//myfopen("./filename",FILE *stream),return 0;
{
char *filename;
FILE *fp;

acc_initialize();
//filename = (char*)(int)acc_fetch_tfarg(1);
filename = tf_getcstringp(1);
fp = fopen(filename, "r" );
if(fp)
{
tf_putp(2, (int)(fp));//return the fp
acc_close();
if(DEBUG) io_printf("open the %s success!\n",filename);
tf_putp(ARG_RET, true); //return the true
}
else
{
acc_close();
if(DEBUG) io_printf("open the %s fail!\n",filename);
tf_putp(ARG_RET, false);
}
return 0;
}

my SV code for using the C file is:
initial
begin
integer fp;
$myfopen("./script.txt",fp);
....
end

I tried to use the DPI-C declaration as the followin:
import "DPI-C" function myfopen(input char filename, output integer FILE);
import "DPI-C" function myfopen(input char "./script.txt", output integer FILE);
import "DPI-C" context function myfopen(input char "./script.txt", output integer FILE);
import "DPI-C" function int myfopen();

and more but I have some cpmpilation error.
Do you have any idea what I should do?

Thanks in advanced, Benni.

sorry, "myopen(...)" is task and I changed the import accordingly but it still not work

import "DPI-C" context task myfopen(input string "./script.txt", output FILE fp);
|
ncvlog: *E,EXPIDN (../monitor/mon_top.sv,48|65): expecting an identifier [3.2][3.8][3.9(IEEE)].
import "DPI-C" context task myfopen(input string "./script.txt", output FILE fp);
|
ncvlog: *E,EXP1RD (../monitor/mon_top.sv,48|73): expecting at least one register variable [3.2.2(IEEE)].
import "DPI-C" context task myfopen(input string "./script.txt", output FILE fp);
|
ncvlog: *E,SVNOTY (../monitor/mon_top.sv,48|78): Syntactically this identifier appears to begin a datatype but it does not refer to a visible datatype in the current scope.
import "DPI-C" context task myfopen(input string "./script.txt", output FILE fp);
|
ncvlog: *E,EXPCORP (../monitor/mon_top.sv,48|81): Expecting a ',' or ')' [A.1.4(IEEE-2001)].
import "DPI-C" context task myfopen(input string "./script.txt", output FILE fp);
|
ncvlog: *E,EXPRPA (../monitor/mon_top.sv,48|81): expecting a right parenthesis (')') [A.2.6(IEEE)].
import "DPI-C" context task myfopen(input string "./script.txt", output FILE fp);
|
ncvlog: *E,EXPENM (../monitor/mon_top.sv,48|82): expecting the keyword 'endmodule' [12.1(IEEE)].

HI Benni

It is not clear to me whether you are trying to use PLI or DPI. If you want to use DPI, you do not need to include any vxl_veriuser.h files and do not need to code it like a PLI method. While using DPI, simply code up your C function as you would as if you were calling that function from within C. Then you put your import DPI-C calls in the verilog/system verilog code and use as if they are verilog/system verilog task. You do not need to use $myopenfunc instead use myopenfunc.

Also while using DPI, use the following declaration:
import "DPI-C" function int myfopen (string filename); (I am not sure if NC supports string as argument presently)


Nitin

Sorry it's my mistake I confused between PLI and DPI. of course I want to use PLI.
I compiled the C file by:
       gcc open_cmd.c -c -I/include -o open_cmd.o
       ld -G open_cmd.o -o libpli.so

and I get the following errors

        Elaborating the design hierarchy:
$myfopen("./script.txt",fp);
       |
ncelab: *W,MISSYST (../monitor/mon_top.sv,51|7): Unrecognized system task or function (did not match built-in or user-defined names) [2.7.4(IEEE Std 1364-2001)].
If item was defined in a shared-object library, the problem could be:
ld.so.1: ncelab: fatal: libvpi.so: open failed: No such file or directory
ld.so.1: ncelab: fatal: libpli.so: open failed: No such file or directory.
while (!$myfeof(fp))
              |
ncelab: *W,MISSYST (../monitor/mon_top.sv,52|14): Unrecognized system task or function (did not match built-in or user-defined names) [2.7.4(IEEE Std 1364-2001)].
 $myfgets(inline_vari,LINE_SIZE,fp);
        |
ncelab: *W,MISSYST (../monitor/mon_top.sv,54|8): Unrecognized system task or function (did not match built-in or user-defined names) [2.7.4(IEEE Std 1364-2001)].
 $mystokstr(inline_vari,cmd_str);
          |
ncelab: *W,MISSYST (../monitor/mon_top.sv,55|10): Unrecognized system task or function (did not match built-in or user-defined names) [2.7.4(IEEE Std 1364-2001)].
    $mystokdec(inline_vari,int_int);     
             |
ncelab: *W,MISSYST (../monitor/mon_top.sv,59|13): Unrecognized system task or function (did not match built-in or user-defined names) [2.7.4(IEEE Std 1364-2001)].
    $mystokint(inline_vari,int_int);     
             |
ncelab: *W,MISSYST (../monitor/mon_top.sv,64|13): Unrecognized system task or function (did not match built-in or user-defined names) [2.7.4(IEEE Std 1364-2001)].
       $mystokhex(inline_vari,hex1,hex2);      
                |
ncelab: *W,MISSYST (../monitor/mon_top.sv,69|16): Unrecognized system task or function (did not match built-in or user-defined names) [2.7.4(IEEE Std 1364-2001)].
$myfclose(fp);
        |
ncelab: *W,MISSYST (../monitor/mon_top.sv,94|8): Unrecognized system task or function (did not match built-in or user-defined names) [2.7.4(IEEE Std 1364-2001)].
...
...
        Writing initial simulation snapshot: worklib.sv_utils:sv
ncverilog: *E,SIMERR: Error during Simulation (status 1), exiting.

Did you finally find a solution for that? I've the same kind of issue.

Thanks