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DPI-C Simulation error

Miguel Caetano

Hello to all,

 I'm new at SystemVerilog and i'm trying to create a way to use C code.  However, when i run the ncsim i obtain these following messages:

"ncsim: *F,NOLWSV: Unable to load the default library libdpi."
"OSDLERROR: ./libdpi.so: cannot open shared object file: No such file or directory or file is not valid ELFCLASS32 library.."

The c-program is a very simple one:

#include "svdpi.h"

void reportc()
{
printf("Hello World from C! ");
}

 

and the systemverilog code is:

 program main();
//string str;

import "DPI-C" reportc=task reportc();

initial
begin
  reportc();
end

endprogram

 

 Thanks for your help

Best Regards

Miguel Caetano 

Parents

  • Hi,

    I tried with the same .sv with c function calling, my sv file name is sv_c_dpi.sv  and c file name as c_sv.c

    I gave the command as

    step 1: ncvlog -sv sv_c_dpi.sv  ---- compiling successfully

    step 2: ncelab main               --- success

    step 3: gcc -fPIC -shared -o libdpi.so c_sv.c (In c file i have included the complete path of svdpi.h)    ---- success  libdpi.so file is created.

    step4: ncsim main           --- Error  (cannot open shared object file : No such file or directory or file is not valid ELFCLASS32 library)

             My both .sv and .c files are contains same data as above said.  Can you give me more insight on how to solve this issue.

             Thanks in Advance.

Reply

  • Hi,

    I tried with the same .sv with c function calling, my sv file name is sv_c_dpi.sv  and c file name as c_sv.c

    I gave the command as

    step 1: ncvlog -sv sv_c_dpi.sv  ---- compiling successfully

    step 2: ncelab main               --- success

    step 3: gcc -fPIC -shared -o libdpi.so c_sv.c (In c file i have included the complete path of svdpi.h)    ---- success  libdpi.so file is created.

    step4: ncsim main           --- Error  (cannot open shared object file : No such file or directory or file is not valid ELFCLASS32 library)

             My both .sv and .c files are contains same data as above said.  Can you give me more insight on how to solve this issue.

             Thanks in Advance.

Children
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