RE: [sv-cc] example code errors in I.12.9 ?

Hi Shalom,

 

The example has a couple of problems that make it unable to compile,

but not in the code related to DPI.  The … in the struct declarations, for example.

Another problem is that the import function “foo” is called in the middle of nowhere

in $unit, which isn’t allowed.

 

I got the example working fine in the simulator available to me by correcting

those MyType declarations and the other minor syntax errors.

 

No LRM-related changes appear necessary.

 

Regards,

Doug

 

test.c:

#include "svdpi.h"

typedef struct { int x; } MyType;

void foo(const svOpenArrayHandle hin, const svOpenArrayHandle hout)

{ 

int count = svSize(hin, 1);

  MyType *s = (MyType *)svGetArrayPtr(hin);

  MyType *d = (MyType *)svGetArrayPtr(hout);

  if (s && d) { 

  /* both arrays have C layout */

  /* an efficient solution using pointer arithmetic */

  while (count--) 

  *d++ = *s++; 

 

} else   {   /* less efficient yet implementation independent */ 

   int i = svLow(hin, 1);

   int j = svLow(hout, 1);

   while (i <= svHigh(hin, 1)) { 

   *(MyType *)svGetArrElemPtr1(hout, j++) = 

   *(MyType *)svGetArrElemPtr1(hin, i++); 

   } 

 } 

}

 

test.sv:

typedef struct {

    int x;

} MyType; 

import "DPI-C" function void foo(input MyType i [], output MyType o []);

MyType source [11:20];  

MyType target [11:20]; 

module top; 

    initial begin

        source[11].x = 123;

        source[20].x = 999;

        foo(source, target);

        $display("source[11].x=%0d, source[12].x=%0d, source[20].x=%0d, target[11].x=%0d, target[12].x=%0d, target[20].x=%0d",

            source[11].x, source[12].x, source[20].x, target[11].x, target[12].x, target[20].x);

    end

endmodule

 

Regards,

Doug

 

From: owner-sv-cc@server.eda.org [mailto:owner-sv-cc@server.eda.org] On Behalf Of Bresticker, Shalom
Sent: Sunday, March 01, 2009 9:44 PM
To: SV-CC
Subject: [sv-cc] example code errors in I.12.9 ?

 

Hi, SV-CC.

 

Please see the discussion in http://verificationguild.com/modules.php?name=Forums&file=viewtopic&p=14513 on the example code in I.12.9 and comment on whether changes are needed.

 

Thanks,

Shalom

 

Shalom Bresticker

Intel Jerusalem LAD DA

+972 2 589-6582

+972 54 721-1033

 

 

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