Aldec Riviera-PRO break simulation on SystemVerilog $error or $warning

Question

Is is possible to configure Aldec Riviera-PRO simulator to break simulation on either $error or $warning SystemVerilog calls? If it is then how?

Answer 1

I don't think there's a specific config option for promoting $error or $warning to a breakpoint in Riviera-PRO, although it worth checking with their support. You do have a couple of options:

• Replace $error with $fatal
• Write a VPI module to overload the system tasks with custom C code

The second option would look something like this:

#include "vpi_user.h"

// System function overload on $warning and $error to stop sim
static int system_function_overload(char *userdata)
{
    vpiHandle systfref, args_iter, argh;
    struct t_vpi_value argval;
    const char *msg = "*** NO MESSAGE PROVIDED ***";

    // Obtain a handle to the argument list
    systfref = vpi_handle(vpiSysTfCall, NULL);
    args_iter = vpi_iterate(vpiArgument, systfref);

    // Pull out the string passed in as the first argument
    if (args_iter) {
        argh = vpi_scan(args_iter);
        argval.format = vpiStringVal;
        vpi_get_value(argh, &argval);
        vpi_free_object(args_iter);
        msg = argval.value.str;
    }

    vpi_printf("BREAK sim from %s:%d with msg %s\n",
                vpi_get_str(vpiFile, systfref),
                vpi_get(vpiLineNo, systfref),
                msg);
    vpi_control(vpiStop);
    return 0;
}

static void register_system_functions(void)
{
    s_vpi_systf_data tfData = { vpiSysTask, vpiSysTask };

    tfData.sizetf       = NULL;
    tfData.compiletf    = system_function_compiletf;
    tfData.calltf       = system_function_overload;
    tfData.user_data    = NULL;
    tfData.tfname       = "$warning";
    vpi_register_systf( &tfData );
    tfData.tfname       = "$error";
    vpi_register_systf( &tfData );
}

void (*vlog_startup_routines[])(void) = {
    register_system_functions,
    0
};