struct EdifBackend : public Backend {
EdifBackend() : Backend("edif", "write design to EDIF netlist file") { }
- void help() YS_OVERRIDE
+ void help() override
{
// |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
log("\n");
log(" -attrprop\n");
log(" create EDIF properties for cell attributes\n");
log("\n");
+ log(" -keep\n");
+ log(" create extra KEEP nets by allowing a cell to drive multiple nets.\n");
+ log("\n");
log(" -pvector {par|bra|ang}\n");
log(" sets the delimiting character for module port rename clauses to\n");
log(" parentheses, square brackets, or angle brackets.\n");
log("is targeted.\n");
log("\n");
}
- void execute(std::ostream *&f, std::string filename, std::vector<std::string> args, RTLIL::Design *design) YS_OVERRIDE
+ void execute(std::ostream *&f, std::string filename, std::vector<std::string> args, RTLIL::Design *design) override
{
log_header(design, "Executing EDIF backend.\n");
std::string top_module_name;
bool port_rename = false;
bool attr_properties = false;
std::map<RTLIL::IdString, std::map<RTLIL::IdString, int>> lib_cell_ports;
- bool nogndvcc = false, gndvccy = false;
+ bool nogndvcc = false, gndvccy = false, keepmode = false;
CellTypes ct(design);
EdifNames edif_names;
attr_properties = true;
continue;
}
+ if (args[argidx] == "-keep") {
+ keepmode = true;
+ continue;
+ }
if (args[argidx] == "-pvector" && argidx+1 < args.size()) {
std::string parray;
port_rename = true;
if (top_module_name.empty())
for (auto module : design->modules())
- if (module->get_bool_attribute("\\top"))
+ if (module->get_bool_attribute(ID::top))
top_module_name = module->name.str();
for (auto module : design->modules())
}
*f << stringf("\n (property %s (string \"%d'h%s\"))", EDIF_DEF(name), GetSize(val.bits), hex_string.c_str());
}
- };
+ };
for (auto module : sorted_modules)
{
if (module->get_blackbox_attribute())
*f << stringf(" (view VIEW_NETLIST\n");
*f << stringf(" (viewType NETLIST)\n");
*f << stringf(" (interface\n");
+
+ for (auto cell : module->cells()) {
+ for (auto &conn : cell->connections())
+ if (cell->output(conn.first))
+ sigmap.add(conn.second);
+ }
+
+ for (auto wire : module->wires())
+ for (auto b1 : SigSpec(wire))
+ {
+ auto b2 = sigmap(b1);
+
+ if (b1 == b2 || !b2.wire)
+ continue;
+
+ log_assert(b1.wire != nullptr);
+
+ Wire *w1 = b1.wire;
+ Wire *w2 = b2.wire;
+
+ {
+ int c1 = w1->get_bool_attribute(ID::keep);
+ int c2 = w2->get_bool_attribute(ID::keep);
+
+ if (c1 > c2) goto promote;
+ if (c1 < c2) goto nopromote;
+ }
+
+ {
+ int c1 = w1->name.isPublic();
+ int c2 = w2->name.isPublic();
+
+ if (c1 > c2) goto promote;
+ if (c1 < c2) goto nopromote;
+ }
+
+ {
+ auto count_nontrivial_attr = [](Wire *w) {
+ int count = w->attributes.size();
+ count -= w->attributes.count(ID::src);
+ count -= w->attributes.count(ID::unused_bits);
+ return count;
+ };
+
+ int c1 = count_nontrivial_attr(w1);
+ int c2 = count_nontrivial_attr(w2);
+
+ if (c1 > c2) goto promote;
+ if (c1 < c2) goto nopromote;
+ }
+
+ {
+ int c1 = w1->port_id ? INT_MAX - w1->port_id : 0;
+ int c2 = w2->port_id ? INT_MAX - w2->port_id : 0;
+
+ if (c1 > c2) goto promote;
+ if (c1 < c2) goto nopromote;
+ }
+
+ nopromote:
+ if (0)
+ promote:
+ sigmap.add(b1);
+ }
+
for (auto wire : module->wires()) {
if (wire->port_id == 0)
continue;
}
}
}
+
*f << stringf(" )\n");
*f << stringf(" (contents\n");
+
if (!nogndvcc) {
*f << stringf(" (instance GND (viewRef VIEW_NETLIST (cellRef GND (libraryRef LIB))))\n");
*f << stringf(" (instance VCC (viewRef VIEW_NETLIST (cellRef VCC (libraryRef LIB))))\n");
}
+
for (auto cell : module->cells()) {
*f << stringf(" (instance %s\n", EDIF_DEF(cell->name));
*f << stringf(" (viewRef VIEW_NETLIST (cellRef %s%s))", EDIF_REF(cell->type),
}
}
}
+
for (auto &it : net_join_db) {
RTLIL::SigBit sig = it.first;
if (sig.wire == NULL && sig != RTLIL::State::S0 && sig != RTLIL::State::S1) {
}
*f << stringf(" (net %s (joined\n", EDIF_DEF(netname));
for (auto &ref : it.second)
- *f << stringf(" %s\n", ref.first.c_str());
+ *f << stringf(" %s\n", ref.first.c_str());
if (sig.wire == NULL) {
if (nogndvcc)
log_error("Design contains constant nodes (map with \"hilomap\" first).\n");
*f << stringf(" (portRef %c (instanceRef GND))\n", gndvccy ? 'Y' : 'G');
if (sig == RTLIL::State::S1)
*f << stringf(" (portRef %c (instanceRef VCC))\n", gndvccy ? 'Y' : 'P');
- }
+ }
*f << stringf(" )");
if (attr_properties && sig.wire != NULL)
for (auto &p : sig.wire->attributes)
add_prop(p.first, p.second);
*f << stringf("\n )\n");
}
- for (auto wire : module->wires()) {
+
+ for (auto wire : module->wires())
+ {
if (!wire->get_bool_attribute(ID::keep))
continue;
- for(int i = 0; i < wire->width; i++) {
+
+ for(int i = 0; i < wire->width; i++)
+ {
SigBit raw_sig = RTLIL::SigSpec(wire, i);
SigBit mapped_sig = sigmap(raw_sig);
+
if (raw_sig == mapped_sig || net_join_db.count(mapped_sig) == 0)
continue;
+
std::string netname = log_signal(raw_sig);
for (size_t i = 0; i < netname.size(); i++)
if (netname[i] == ' ' || netname[i] == '\\')
netname.erase(netname.begin() + i--);
- *f << stringf(" (net %s (joined\n", EDIF_DEF(netname));
- auto &refs = net_join_db.at(mapped_sig);
- for (auto &ref : refs)
- if (ref.second)
- *f << stringf(" %s\n", ref.first.c_str());
- *f << stringf(" )");
- if (attr_properties && raw_sig.wire != NULL)
- for (auto &p : raw_sig.wire->attributes)
- add_prop(p.first, p.second);
- *f << stringf("\n )\n");
+
+ if (keepmode)
+ {
+ *f << stringf(" (net %s (joined\n", EDIF_DEF(netname));
+
+ auto &refs = net_join_db.at(mapped_sig);
+ for (auto &ref : refs)
+ if (ref.second)
+ *f << stringf(" %s\n", ref.first.c_str());
+ *f << stringf(" )");
+
+ if (attr_properties && raw_sig.wire != NULL)
+ for (auto &p : raw_sig.wire->attributes)
+ add_prop(p.first, p.second);
+
+ *f << stringf("\n )\n");
+ }
+ else
+ {
+ log_warning("Ignoring conflicting 'keep' property on net %s. Use -keep to generate the extra net nevertheless.\n", EDIF_DEF(netname));
+ }
}
}
+
*f << stringf(" )\n");
*f << stringf(" )\n");
*f << stringf(" )\n");
projects / yosys.git / blobdiff