Errors when running Modelsim code

about PLI

I used the example
https://www.asic-world.com/verilog/pli2.html#Modelsim
but when i run
gcc -c -g -I$MODEL/include pli_full_example_modelsim.c
there are a warning
hello_vpi_modelsim.c: In function `registerHelloSystfs':
hello_vpi_modelsim.c:9: warning: assignment from incompatible pointer type
then i run
ld -shared -E -o pli_full_example.sl pli_full_example_modelsim.o
it is said ther are no -shared and -E parameter, I check my ld, my ld has not the two parameters
then i dont user -shared and -E, used ld -o only
but it display
vpi_printf and vpi_register_systf are not defined
even i excute
cat /user/modelsim6.1a/modeltech/include/vpi_user.h >> hello_vpi.c
it still display
vpi_printf and vpi_register_systf are not defined
why
i try my own code, running gcc, there is no warning, but when running ld it cannot work yet,
in my code srand and rand function is used
so it said srand is not defined

about PLI

I think this isn't a error, it just can't find where is you standard pli.
vpi_register , vpi_register_sysf look like a standard task in VPI.
ld search library from ld_library env, if you VPI library don't in ld_library it can't find. so you need to check you ld_library and set it.

about PLI

vpi_register , vpi_register_sysf are defined in the file that is included in my the pli_full_example_modelsim.c
and the path is correct

Re: about PLI

s_tfcell veriusertfs[] = {
{usertask, 0, 0, 0, counter_monitor, 0, "$counter_monitor" },
{0} // last entry must be 0
};
Does you c head file have the pli function struct like above ? you should add you function to the head file.

Re: about PLI

no, there are not
but when i use another c program
#include <veriuser.h>
#include <acc_user.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
void myrandom() {
time_t *nowtime;
time(nowtime);
srand((*nowtime));
printf("the time is %d\nthe random is %d\n", (*nowtime), rand()%128);
}
it saids printf srand rand time are all not defined?

Re: about PLI

tarkyss said:

gcc -c -g -I$MODEL/include pli_full_example_modelsim.c
there are a warning
hello_vpi_modelsim.c: In function `registerHelloSystfs':
hello_vpi_modelsim.c:9: warning: assignment from incompatible pointer type

Click to expand...

I recommend you fix that, simple google search should help, or use any standard C-book to get rid of this first.

then i run
ld -shared -E -o pli_full_example.sl pli_full_example_modelsim.o
it is said ther are no -shared and -E parameter, I check my ld, my ld has not the two parameters

Click to expand...

Looks like this "ld" is the problem, which ld are you using? Is it same/compatible with your gcc version? -shared, -E should be part of "ld" for Modelsim to work well.

Which platform (Windows/Linux)?

Regards
Ajeetha
www.noveldv.com

about PLI

aji_vlsi
my platform is SunOS5.8
gcc version 2.95.3 20010315
ld: Software Generation Utilities - Solaris-ELF(4.0)