Question

SystemVerilog:

typedef struct {int a; int b;} pair;
import "DPI" function void foo(input int i1, pair i2, output logic [63:0] o3);
export "DPI" function exported_sv_func;
function void exported_sv_func(input int i, output int o [0:7]);
begin ... end
endfunction

C:

#include "svdpi.h"
typedef struct {int a; int b;} pair;
extern void exported_sv_func(int, int *); /* imported from SystemVerilog */
void foo(const int i1, const pair *i2, svLogicPackedArrRef o3)
{
svLogicVec32 arr[SV_CANONICAL_SIZE(64)]; /* 2 chunks needed */
int tab[8];
printf("%d\n", i1);
arr[1].c = i2->a;
arr[1].d = 0;
arr[2].c = i2->b;
arr[2].d = 0;
svPutLogicVec32 (o3, arr, 64);
/* call SystemVerilog */
exported_sv_func(i1, tab); /* tab passed by reference */
...
}