A Verilog VPI problem

xxtern

I am using ncverilog (LDV4) to run a simulation with VPI functions (loadvpi option) but get the following errrors:

ncsim: relocation error: ./libvpi.so: undefined symbol: vpi_get_userdata

I checked vpi_get_userdata prototype in vpi_user.h:
XXTERN void *vpi_get_userdata PROTO_PARAMS((vpiHandle obj));

two places in my VPI codes call this funcion:
arg_array = (vpiHandle *)vpi_get_userdata(systf_h);

I couldn't find anything wrong in calling.

Could someone help me out?

ncsim libvpi.so

Hi,
Can you show the exact gcc, ncverilog command lines?

eruisi said:

I am using ncverilog (LDV4) to run a simulation with VPI functions (loadvpi option) but get the following errrors:

ncsim: relocation error: ./libvpi.so: undefined symbol: vpi_get_userdata

Click to expand...

I hope you are running on same OS - meaning that the SO file created is for Linux and you are running NC on Linux.

[quote[
I checked vpi_get_userdata prototype in vpi_user.h:
XXTERN void *vpi_get_userdata PROTO_PARAMS((vpiHandle obj));

two places in my VPI codes call this funcion:
arg_array = (vpiHandle *)vpi_get_userdata(systf_h);

I couldn't find anything wrong in calling.

Could someone help me out?[/quote]

Is it only to do with this function or for all other VPI calls as well? Is it possible that you comment these 2 calls and see what happens? Idea is to corner down if it is some issue with just this vpi_get_userdata or generic linking issue.

Also try posting in cdnusers.org, it is monitored by CDN support guys as well.

Regards
Ajeetha, CVC
www.noveldv.com

what is vpi simulation

Hello,
Your Linking is not proper. Can u plz do a ldd on your .so file and tell it ?