check_netlist.h File Reference

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Functions
void	check_netlist (void)

Function Documentation

void check_netlist

(

void

)

Definition at line 37 of file check_netlist.c.

                     {
    int i, error, num_conn;
    struct s_hash **net_hash_table, *h_net_ptr;

    /* TODO: Remove the following the function calls after these functions have 
     been fleshed and are legitimately used in the code!!! They are called here so that 
     the compiler will not throw an error for an unused function                */

    int unused_var;
    unused_var = check_subblock_internal_nets(0, 0);
    unused_var = check_primitives(0, 0);
    if (unused_var)
        vpr_printf(TIO_MESSAGE_INFO, "Please go to the check_netlist() function in check_netlist.c and remove the first section as needed.");

    /* This routine checks that the netlist makes sense         */

    net_hash_table = alloc_hash_table();

    error = 0;

    /* Check that nets fanout and have a driver. */
    for (i = 0; i < num_nets; i++) {
        h_net_ptr = insert_in_hash_table(net_hash_table, clb_net[i].name, i);
        if (h_net_ptr->count != 1) {
            vpr_printf(TIO_MESSAGE_ERROR, "Net %s has multiple drivers.\n", clb_net[i].name);
            error++;
        }
        error += check_connections_to_global_clb_pins(i);
        if (error >= ERROR_THRESHOLD) {
            vpr_printf(TIO_MESSAGE_ERROR, "Too many errors in netlist, exiting.\n");
        }
    }
    free_hash_table(net_hash_table);

    /* Check that each block makes sense. */
    for (i = 0; i < num_blocks; i++) {
        num_conn = get_num_conn(i);
        error += check_clb_conn(i, num_conn);
        error += check_clb_internal_nets(i);
        error += check_subblocks(i);
        if (error >= ERROR_THRESHOLD) {
            vpr_printf(TIO_MESSAGE_ERROR, "Too many errors in netlist, exiting.\n");
            exit(1);
        }
    }

    error += check_for_duplicated_names();

    if (error != 0) {
        vpr_printf(TIO_MESSAGE_ERROR, "Found %d fatal Errors in the input netlist.\n", error);
        exit(1);
    }

    /* HACK: Jason Luu January 17, 2011 Do not route common constants gnd and vcc
     Todo: Need to make architecture driven.
     */
    for (i = 0; i < num_nets; i++) {
        if (strcmp(clb_net[i].name, "vcc") == 0) {
            clb_net[i].is_global = TRUE;
        } else if (strcmp(clb_net[i].name, "gnd") == 0) {
            clb_net[i].is_global = TRUE;
        }
    }
}

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