exporting system verilog functions and task to C using DPI

hello,

I have been trying to import and export functions and task through DPI between system verilog and C. I have managed to import functions and task from C to SV:) but can't really figure out how to export SV functions and tasks to C:confused:. I tried an example code given in the modelsim manual but i just doesn't work :(

this is how the code looks like;

sv file:

module helloc();

int ret;

export "DPI-C" task verilog_task;

task verilog_task (input i, output int o);

# 10;

$display ("hello from sv");

endtask

import "DPI-C" context task c_task (input int i, output int o);

initial begin

c_task(1,ret);

end

endmodule

C file :# include <stdio.h># include <svdpi.h># include <conio.h># include <dpiheader.h>

int c_task(int i, int*o) {

printf("hello from c");

verilog_task(i, o);

*o = i;

return 0;

}

the dpiheader.h file was generated by Modelsim when given the command vlog -sv -dpiheader dpiheader.h helloc.sv

this is the error i get when trying to compile the C file:

# In file included from helloc.c:4:0:# c:\mingw\bin\../lib/gcc/mingw32/4.7.2/../../../../include/dpiheader.h:26:1: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'int'

the error is in the dpiheader file!!!

and if i remove this header file then the compiler doesn't consider the verilog_task as a task. it gives an error again.

I will obliged if someone can help me out with this prob:oops:

really gotta figure this prob out asap...

pls reply asap