/*---------------------------------------------------------------------------------------------
* (function: make_output_pins_for_existing_node)
* Looks at a node and extracts the output pins into a signal list so they can be accessed
* in this form
*-------------------------------------------------------------------------------------------*/
signal_list_t *make_output_pins_for_existing_node(nnode_t* node, int width)
{
signal_list_t *return_list = init_signal_list();
int i;
oassert(node->num_output_pins == width);
for (i = 0; i < width; i++)
{
npin_t *new_pin1;
npin_t *new_pin2;
nnet_t *new_net;
new_pin1 = allocate_npin();
new_pin2 = allocate_npin();
new_net = allocate_nnet();
new_net->name = node->name;
/* hook the output pin into the node */
add_output_pin_to_node(node, new_pin1, i);
/* hook up new pin 1 into the new net */
add_driver_pin_to_net(new_net, new_pin1);
/* hook up the new pin 2 to this new net */
add_fanout_pin_to_net(new_net, new_pin2);
/* add the new_pin2 to the list of pins */
add_pin_to_signal_list(return_list, new_pin2);
}
return return_list;
}
signal_list_t *copy_output_signals(signal_list_t *signalsvar)
{
signal_list_t *duplicate_signals = init_signal_list();
int i;
for (i = 0; i < signalsvar->count; i++)
{
npin_t *pin = signalsvar->pins[i];
add_pin_to_signal_list(duplicate_signals, copy_output_npin(pin));
}
return duplicate_signals;
}
signal_list_t *copy_input_signals(signal_list_t *signals)
{
signal_list_t *duplicate_signals = init_signal_list();
int i;
for (i = 0; i < signals->count; i++)
{
npin_t *pin = signals->pins[i];
pin = copy_input_npin(pin);
add_pin_to_signal_list(duplicate_signals, pin);
}
return duplicate_signals;
}
/*---------------------------------------------------------------------------------------------
* (function: combine_lists_without_freeing_originals)
*-------------------------------------------------------------------------------------------*/
signal_list_t *combine_lists_without_freeing_originals(signal_list_t **signal_lists, int num_signal_lists)
{
signal_list_t *return_list = init_signal_list();
int i;
for (i = 0; i < num_signal_lists; i++)
{
int j;
for (j = 0; j < signal_lists[i]->count; j++)
add_pin_to_signal_list(return_list, signal_lists[i]->pins[j]);
}
return return_list;
}
/*---------------------------------------------------------------------------------------------
* (function: combine_lists)
*-------------------------------------------------------------------------------------------*/
signal_list_t *combine_lists(signal_list_t **signal_lists, int num_signal_lists)
{
int i;
for (i = 1; i < num_signal_lists; i++)
{
int j;
for (j = 0; j < signal_lists[i]->count; j++)
add_pin_to_signal_list(signal_lists[0], signal_lists[i]->pins[j]);
free_signal_list(signal_lists[i]);
}
return signal_lists[0];
}
