static char* draw_island_port(ivl_island_t island, int island_input_flag,
ivl_nexus_t nex, struct vvp_nexus_data*nex_data,
const char*src)
{
char result[64];
if (ivl_island_flag_test(island,0) == 0) {
fprintf(vvp_out, "I%p .island tran;\n", island);
ivl_island_flag_set(island,0,1);
}
snprintf(result, sizeof result, "p%p", nex);
assert(nex_data->island == 0);
nex_data->island = island;
assert(nex_data->island_input == 0);
nex_data->island_input = strdup(result);
if (island_input_flag) {
fprintf(vvp_out, "p%p .import I%p, %s;\n", nex, island, src);
return strdup(src);
} else {
fprintf(vvp_out, "p%p .port I%p, %s;\n", nex, island, src);
return strdup(nex_data->island_input);
}
}
void draw_switch_in_scope(ivl_switch_t sw)
{
ivl_island_t island;
ivl_nexus_t nex_a, nex_b, enable;
const char*str_a, *str_b, *str_e;
ivl_expr_t rise_exp = ivl_switch_delay(sw, 0);
ivl_expr_t fall_exp = ivl_switch_delay(sw, 1);
ivl_expr_t decay_exp= ivl_switch_delay(sw, 2);
if ((rise_exp || fall_exp || decay_exp) &&
(!number_is_immediate(rise_exp, 64, 0) ||
number_is_unknown(rise_exp) ||
!number_is_immediate(fall_exp, 64, 0) ||
number_is_unknown(fall_exp) ||
!number_is_immediate(decay_exp, 64, 0) ||
number_is_unknown(decay_exp))) {
fprintf(stderr, "%s:%u: error: Invalid tranif delay expression.\n",
ivl_switch_file(sw), ivl_switch_lineno(sw));
vvp_errors += 1;
}
island = ivl_switch_island(sw);
if (ivl_island_flag_test(island, 0) == 0)
draw_tran_island(island);
nex_a = ivl_switch_a(sw);
assert(nex_a);
str_a = draw_island_net_input(island, nex_a);
nex_b = ivl_switch_b(sw);
assert(nex_b);
str_b = draw_island_net_input(island, nex_b);
enable = ivl_switch_enable(sw);
str_e = 0;
char str_e_buf[4 + 2*sizeof(void*)];
if (enable && rise_exp) {
assert(fall_exp && decay_exp);
/* If the enable has a delay, then generate a .delay
node to delay the input by the specified amount. Do
the delay outside of the island so that the island
processing doesn't have to deal with it. */
const char*raw = draw_net_input(enable);
snprintf(str_e_buf, sizeof str_e_buf, "p%p", sw);
str_e = str_e_buf;
fprintf(vvp_out, "%s/d .delay 1 "
"(%" PRIu64 ",%" PRIu64 ",%" PRIu64 ") %s;\n",
str_e, get_number_immediate64(rise_exp),
get_number_immediate64(fall_exp),
get_number_immediate64(decay_exp), raw);
fprintf(vvp_out, "%s .import I%p, %s/d;\n", str_e, island, str_e);
} else if (enable) {
str_e = draw_island_net_input(island, enable);
}
switch (ivl_switch_type(sw)) {
case IVL_SW_TRAN:
fprintf(vvp_out, " .tran");
break;
case IVL_SW_TRANIF0:
fprintf(vvp_out, " .tranif0");
break;
case IVL_SW_TRANIF1:
fprintf(vvp_out, " .tranif1");
break;
case IVL_SW_TRAN_VP:
fprintf(vvp_out, " .tranvp %u %u %u,",
ivl_switch_width(sw), ivl_switch_part(sw), ivl_switch_offset(sw));
break;
default:
fprintf(stderr, "%s:%u: tgt-vvp sorry: resistive switch modeling "
"is not currently supported.\n",
ivl_switch_file(sw), ivl_switch_lineno(sw));
vvp_errors += 1;
return;
}
fprintf(vvp_out, " I%p, %s %s", island, str_a, str_b);
if (enable) {
fprintf(vvp_out, ", %s", str_e);
}
fprintf(vvp_out, ";\n");
}
