Question

SystemVerilog:

import "DPI" function void foo(input logic [127:0]);
import "DPI" function void boo(input logic [127:0] i []); // open array of
// 128-bit

C:

#include "svdpi.h"
/* one 128-bit packed vector */
void foo(const svLogicPackedArrRef packed_vec_128_bit)
{
svLogicVec32 arr[SV_CANONICAL_SIZE(128)]; /* canonical representation */
svGetLogicVec32(arr, packed_vec_128_bit, 128);
...
}
/* open array of 128-bit packed vectors */
void boo(const svOpenArrayHandle h)
{
int i;
svLogicVec32 arr[SV_CANONICAL_SIZE(128)]; /* canonical representation */
for (i = svLow(h, 1); i <= svHigh(h, 1); i++) {
svLogicPackedArrRef ptr = (svLogicPackedArrRef)svGetArrElemPtr1(h, i);
/* user need not know the vendor representation! */
svGetLogicVec32(arr, ptr, 128);
...
}
...
}