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yosys/backends/blif/blif.cc

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/*
* yosys -- Yosys Open SYnthesis Suite
*
* Copyright (C) 2012 Claire Xenia Wolf <claire@yosyshq.com>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
*/
// [[CITE]] Berkeley Logic Interchange Format (BLIF)
// University of California. Berkeley. July 28, 1992
// http://www.ece.cmu.edu/~ee760/760docs/blif.pdf
#include "kernel/rtlil.h"
#include "kernel/register.h"
#include "kernel/sigtools.h"
#include "kernel/celltypes.h"
#include "kernel/log.h"
#include <string>
USING_YOSYS_NAMESPACE
PRIVATE_NAMESPACE_BEGIN
struct BlifDumperConfig
{
bool icells_mode;
bool conn_mode;
bool impltf_mode;
bool gates_mode;
bool cname_mode;
bool iname_mode;
bool param_mode;
bool attr_mode;
bool iattr_mode;
bool blackbox_mode;
bool noalias_mode;
std::string buf_type, buf_in, buf_out;
std::map<RTLIL::IdString, std::pair<RTLIL::IdString, RTLIL::IdString>> unbuf_types;
std::string true_type, true_out, false_type, false_out, undef_type, undef_out;
BlifDumperConfig() : icells_mode(false), conn_mode(false), impltf_mode(false), gates_mode(false),
cname_mode(false), iname_mode(false), param_mode(false), attr_mode(false), iattr_mode(false),
blackbox_mode(false), noalias_mode(false) { }
};
struct BlifDumper
{
std::ostream &f;
RTLIL::Module *module;
RTLIL::Design *design;
BlifDumperConfig *config;
CellTypes ct;
SigMap sigmap;
dict<SigBit, int> init_bits;
BlifDumper(std::ostream &f, RTLIL::Module *module, RTLIL::Design *design, BlifDumperConfig *config) :
f(f), module(module), design(design), config(config), ct(design), sigmap(module)
{
for (Wire *wire : module->wires())
if (wire->attributes.count(ID::init)) {
SigSpec initsig = sigmap(wire);
Const initval = wire->attributes.at(ID::init);
for (int i = 0; i < GetSize(initsig) && i < GetSize(initval); i++)
switch (initval[i]) {
case State::S0:
init_bits[initsig[i]] = 0;
break;
case State::S1:
init_bits[initsig[i]] = 1;
break;
default:
break;
}
}
}
pool<SigBit> cstr_bits_seen;
const std::string str(RTLIL::IdString id)
{
std::string str = RTLIL::unescape_id(id);
for (size_t i = 0; i < str.size(); i++)
if (str[i] == '#' || str[i] == '=' || str[i] == '<' || str[i] == '>')
str[i] = '?';
return str;
}
const std::string str(RTLIL::SigBit sig)
{
cstr_bits_seen.insert(sig);
if (sig.wire == NULL) {
if (sig == RTLIL::State::S0) return config->false_type == "-" || config->false_type == "+" ? config->false_out.c_str() : "$false";
if (sig == RTLIL::State::S1) return config->true_type == "-" || config->true_type == "+" ? config->true_out.c_str() : "$true";
return config->undef_type == "-" || config->undef_type == "+" ? config->undef_out.c_str() : "$undef";
}
std::string str = RTLIL::unescape_id(sig.wire->name);
for (size_t i = 0; i < str.size(); i++)
if (str[i] == '#' || str[i] == '=' || str[i] == '<' || str[i] == '>')
str[i] = '?';
if (sig.wire->width != 1)
str += stringf("[%d]", sig.wire->upto ? sig.wire->start_offset+sig.wire->width-sig.offset-1 : sig.wire->start_offset+sig.offset);
return str;
}
const std::string str_init(RTLIL::SigBit sig)
{
sigmap.apply(sig);
if (init_bits.count(sig) == 0)
return " 2";
string str = stringf(" %d", init_bits.at(sig));
return str;
}
const char *subckt_or_gate(std::string cell_type)
{
if (!config->gates_mode)
return "subckt";
if (design->module(RTLIL::escape_id(cell_type)) == nullptr)
return "gate";
if (design->module(RTLIL::escape_id(cell_type))->get_blackbox_attribute())
return "gate";
return "subckt";
}
void dump_params(const char *command, dict<IdString, Const> &params)
{
for (auto &param : params) {
f << stringf("%s %s ", command, log_id(param.first));
if (param.second.flags & RTLIL::CONST_FLAG_STRING) {
std::string str = param.second.decode_string();
f << stringf("\"");
for (char ch : str)
if (ch == '"' || ch == '\\')
f << stringf("\\%c", ch);
else if (ch < 32 || ch >= 127)
f << stringf("\\%03o", ch);
else
f << stringf("%c", ch);
f << stringf("\"\n");
} else
f << stringf("%s\n", param.second.as_string().c_str());
}
}
void dump()
{
f << stringf("\n");
f << stringf(".model %s\n", str(module->name).c_str());
std::map<int, RTLIL::Wire*> inputs, outputs;
for (auto wire : module->wires()) {
if (wire->port_input)
inputs[wire->port_id] = wire;
if (wire->port_output)
outputs[wire->port_id] = wire;
}
f << stringf(".inputs");
for (auto &it : inputs) {
RTLIL::Wire *wire = it.second;
for (int i = 0; i < wire->width; i++)
f << stringf(" %s", str(RTLIL::SigSpec(wire, i)).c_str());
}
f << stringf("\n");
f << stringf(".outputs");
for (auto &it : outputs) {
RTLIL::Wire *wire = it.second;
for (int i = 0; i < wire->width; i++)
f << stringf(" %s", str(RTLIL::SigSpec(wire, i)).c_str());
}
f << stringf("\n");
if (module->get_blackbox_attribute()) {
f << stringf(".blackbox\n");
f << stringf(".end\n");
return;
}
if (!config->impltf_mode) {
if (!config->false_type.empty()) {
if (config->false_type == "+")
f << stringf(".names %s\n", config->false_out.c_str());
else if (config->false_type != "-")
f << stringf(".%s %s %s=$false\n", subckt_or_gate(config->false_type),
config->false_type.c_str(), config->false_out.c_str());
} else
f << stringf(".names $false\n");
if (!config->true_type.empty()) {
if (config->true_type == "+")
f << stringf(".names %s\n1\n", config->true_out.c_str());
else if (config->true_type != "-")
f << stringf(".%s %s %s=$true\n", subckt_or_gate(config->true_type),
config->true_type.c_str(), config->true_out.c_str());
} else
f << stringf(".names $true\n1\n");
if (!config->undef_type.empty()) {
if (config->undef_type == "+")
f << stringf(".names %s\n", config->undef_out.c_str());
else if (config->undef_type != "-")
f << stringf(".%s %s %s=$undef\n", subckt_or_gate(config->undef_type),
config->undef_type.c_str(), config->undef_out.c_str());
} else
f << stringf(".names $undef\n");
}
for (auto cell : module->cells())
{
if (cell->type == ID($scopeinfo))
continue;
if (config->unbuf_types.count(cell->type)) {
auto portnames = config->unbuf_types.at(cell->type);
f << stringf(".names %s %s\n1 1\n",
str(cell->getPort(portnames.first)).c_str(), str(cell->getPort(portnames.second)).c_str());
continue;
}
if (!config->icells_mode && cell->type == ID($_NOT_)) {
f << stringf(".names %s %s\n0 1\n",
str(cell->getPort(ID::A)).c_str(), str(cell->getPort(ID::Y)).c_str());
goto internal_cell;
}
if (!config->icells_mode && cell->type == ID($_AND_)) {
f << stringf(".names %s %s %s\n11 1\n",
str(cell->getPort(ID::A)).c_str(), str(cell->getPort(ID::B)).c_str(), str(cell->getPort(ID::Y)).c_str());
goto internal_cell;
}
if (!config->icells_mode && cell->type == ID($_OR_)) {
f << stringf(".names %s %s %s\n1- 1\n-1 1\n",
str(cell->getPort(ID::A)).c_str(), str(cell->getPort(ID::B)).c_str(), str(cell->getPort(ID::Y)).c_str());
goto internal_cell;
}
if (!config->icells_mode && cell->type == ID($_XOR_)) {
f << stringf(".names %s %s %s\n10 1\n01 1\n",
str(cell->getPort(ID::A)).c_str(), str(cell->getPort(ID::B)).c_str(), str(cell->getPort(ID::Y)).c_str());
goto internal_cell;
}
if (!config->icells_mode && cell->type == ID($_NAND_)) {
f << stringf(".names %s %s %s\n0- 1\n-0 1\n",
str(cell->getPort(ID::A)).c_str(), str(cell->getPort(ID::B)).c_str(), str(cell->getPort(ID::Y)).c_str());
goto internal_cell;
}
if (!config->icells_mode && cell->type == ID($_NOR_)) {
f << stringf(".names %s %s %s\n00 1\n",
str(cell->getPort(ID::A)).c_str(), str(cell->getPort(ID::B)).c_str(), str(cell->getPort(ID::Y)).c_str());
goto internal_cell;
}
if (!config->icells_mode && cell->type == ID($_XNOR_)) {
f << stringf(".names %s %s %s\n11 1\n00 1\n",
str(cell->getPort(ID::A)).c_str(), str(cell->getPort(ID::B)).c_str(), str(cell->getPort(ID::Y)).c_str());
goto internal_cell;
}
if (!config->icells_mode && cell->type == ID($_ANDNOT_)) {
f << stringf(".names %s %s %s\n10 1\n",
str(cell->getPort(ID::A)).c_str(), str(cell->getPort(ID::B)).c_str(), str(cell->getPort(ID::Y)).c_str());
goto internal_cell;
}
if (!config->icells_mode && cell->type == ID($_ORNOT_)) {
f << stringf(".names %s %s %s\n1- 1\n-0 1\n",
str(cell->getPort(ID::A)).c_str(), str(cell->getPort(ID::B)).c_str(), str(cell->getPort(ID::Y)).c_str());
goto internal_cell;
}
if (!config->icells_mode && cell->type == ID($_AOI3_)) {
f << stringf(".names %s %s %s %s\n-00 1\n0-0 1\n",
str(cell->getPort(ID::A)).c_str(), str(cell->getPort(ID::B)).c_str(), str(cell->getPort(ID::C)).c_str(), str(cell->getPort(ID::Y)).c_str());
goto internal_cell;
}
if (!config->icells_mode && cell->type == ID($_OAI3_)) {
f << stringf(".names %s %s %s %s\n00- 1\n--0 1\n",
str(cell->getPort(ID::A)).c_str(), str(cell->getPort(ID::B)).c_str(), str(cell->getPort(ID::C)).c_str(), str(cell->getPort(ID::Y)).c_str());
goto internal_cell;
}
if (!config->icells_mode && cell->type == ID($_AOI4_)) {
f << stringf(".names %s %s %s %s %s\n-0-0 1\n-00- 1\n0--0 1\n0-0- 1\n",
str(cell->getPort(ID::A)).c_str(), str(cell->getPort(ID::B)).c_str(),
str(cell->getPort(ID::C)).c_str(), str(cell->getPort(ID::D)).c_str(), str(cell->getPort(ID::Y)).c_str());
goto internal_cell;
}
if (!config->icells_mode && cell->type == ID($_OAI4_)) {
f << stringf(".names %s %s %s %s %s\n00-- 1\n--00 1\n",
str(cell->getPort(ID::A)).c_str(), str(cell->getPort(ID::B)).c_str(),
str(cell->getPort(ID::C)).c_str(), str(cell->getPort(ID::D)).c_str(), str(cell->getPort(ID::Y)).c_str());
goto internal_cell;
}
if (!config->icells_mode && cell->type == ID($_MUX_)) {
f << stringf(".names %s %s %s %s\n1-0 1\n-11 1\n",
str(cell->getPort(ID::A)).c_str(), str(cell->getPort(ID::B)).c_str(),
str(cell->getPort(ID::S)).c_str(), str(cell->getPort(ID::Y)).c_str());
goto internal_cell;
}
if (!config->icells_mode && cell->type == ID($_NMUX_)) {
f << stringf(".names %s %s %s %s\n0-0 1\n-01 1\n",
str(cell->getPort(ID::A)).c_str(), str(cell->getPort(ID::B)).c_str(),
str(cell->getPort(ID::S)).c_str(), str(cell->getPort(ID::Y)).c_str());
goto internal_cell;
}
if (!config->icells_mode && cell->type == ID($_FF_)) {
f << stringf(".latch %s %s%s\n", str(cell->getPort(ID::D)).c_str(), str(cell->getPort(ID::Q)).c_str(),
str_init(cell->getPort(ID::Q)).c_str());
goto internal_cell;
}
if (!config->icells_mode && cell->type == ID($_DFF_N_)) {
f << stringf(".latch %s %s fe %s%s\n", str(cell->getPort(ID::D)).c_str(), str(cell->getPort(ID::Q)).c_str(),
str(cell->getPort(ID::C)).c_str(), str_init(cell->getPort(ID::Q)).c_str());
goto internal_cell;
}
if (!config->icells_mode && cell->type == ID($_DFF_P_)) {
f << stringf(".latch %s %s re %s%s\n", str(cell->getPort(ID::D)).c_str(), str(cell->getPort(ID::Q)).c_str(),
str(cell->getPort(ID::C)).c_str(), str_init(cell->getPort(ID::Q)).c_str());
goto internal_cell;
}
if (!config->icells_mode && cell->type == ID($_DLATCH_N_)) {
f << stringf(".latch %s %s al %s%s\n", str(cell->getPort(ID::D)).c_str(), str(cell->getPort(ID::Q)).c_str(),
str(cell->getPort(ID::E)).c_str(), str_init(cell->getPort(ID::Q)).c_str());
goto internal_cell;
}
if (!config->icells_mode && cell->type == ID($_DLATCH_P_)) {
f << stringf(".latch %s %s ah %s%s\n", str(cell->getPort(ID::D)).c_str(), str(cell->getPort(ID::Q)).c_str(),
str(cell->getPort(ID::E)).c_str(), str_init(cell->getPort(ID::Q)).c_str());
goto internal_cell;
}
if (!config->icells_mode && cell->type == ID($lut)) {
f << stringf(".names");
auto &inputs = cell->getPort(ID::A);
auto width = cell->parameters.at(ID::WIDTH).as_int();
log_assert(inputs.size() == width);
for (int i = width-1; i >= 0; i--)
f << stringf(" %s", str(inputs.extract(i, 1)).c_str());
auto &output = cell->getPort(ID::Y);
log_assert(output.size() == 1);
f << stringf(" %s", str(output).c_str());
f << stringf("\n");
RTLIL::SigSpec mask = cell->parameters.at(ID::LUT);
for (int i = 0; i < (1 << width); i++)
if (mask[i] == State::S1) {
for (int j = width-1; j >= 0; j--) {
f << ((i>>j)&1 ? '1' : '0');
}
f << " 1\n";
}
goto internal_cell;
}
if (!config->icells_mode && cell->type == ID($sop)) {
f << stringf(".names");
auto &inputs = cell->getPort(ID::A);
auto width = cell->parameters.at(ID::WIDTH).as_int();
auto depth = cell->parameters.at(ID::DEPTH).as_int();
vector<State> table = cell->parameters.at(ID::TABLE).to_bits();
while (GetSize(table) < 2*width*depth)
table.push_back(State::S0);
log_assert(inputs.size() == width);
for (int i = 0; i < width; i++)
f << stringf(" %s", str(inputs.extract(i, 1)).c_str());
auto &output = cell->getPort(ID::Y);
log_assert(output.size() == 1);
f << stringf(" %s", str(output).c_str());
f << stringf("\n");
for (int i = 0; i < depth; i++) {
for (int j = 0; j < width; j++) {
bool pat0 = table.at(2*width*i + 2*j + 0) == State::S1;
bool pat1 = table.at(2*width*i + 2*j + 1) == State::S1;
if (pat0 && !pat1) f << "0";
else if (!pat0 && pat1) f << "1";
else f << "-";
}
f << " 1\n";
}
goto internal_cell;
}
f << stringf(".%s %s", subckt_or_gate(cell->type.str()), str(cell->type).c_str());
for (auto &conn : cell->connections())
{
if (conn.second.size() == 1) {
f << stringf(" %s=%s", str(conn.first).c_str(), str(conn.second[0]).c_str());
continue;
}
Module *m = design->module(cell->type);
Wire *w = m ? m->wire(conn.first) : nullptr;
if (w == nullptr) {
for (int i = 0; i < GetSize(conn.second); i++)
f << stringf(" %s[%d]=%s", str(conn.first).c_str(), i, str(conn.second[i]).c_str());
} else {
for (int i = 0; i < std::min(GetSize(conn.second), GetSize(w)); i++) {
SigBit sig(w, i);
f << stringf(" %s[%d]=%s", str(conn.first).c_str(), sig.wire->upto ?
sig.wire->start_offset+sig.wire->width-sig.offset-1 :
sig.wire->start_offset+sig.offset, str(conn.second[i]).c_str());
}
}
}
f << stringf("\n");
if (config->cname_mode)
f << stringf(".cname %s\n", str(cell->name).c_str());
if (config->attr_mode)
dump_params(".attr", cell->attributes);
if (config->param_mode)
dump_params(".param", cell->parameters);
if (0) {
internal_cell:
if (config->iname_mode)
f << stringf(".cname %s\n", str(cell->name).c_str());
if (config->iattr_mode)
dump_params(".attr", cell->attributes);
}
}
for (auto &conn : module->connections())
for (int i = 0; i < conn.first.size(); i++)
{
SigBit lhs_bit = conn.first[i];
SigBit rhs_bit = conn.second[i];
if (config->noalias_mode && cstr_bits_seen.count(lhs_bit) == 0)
continue;
if (config->conn_mode)
f << stringf(".conn %s %s\n", str(rhs_bit).c_str(), str(lhs_bit).c_str());
else if (!config->buf_type.empty())
f << stringf(".%s %s %s=%s %s=%s\n", subckt_or_gate(config->buf_type), config->buf_type.c_str(),
config->buf_in.c_str(), str(rhs_bit).c_str(), config->buf_out.c_str(), str(lhs_bit).c_str());
else
f << stringf(".names %s %s\n1 1\n", str(rhs_bit).c_str(), str(lhs_bit).c_str());
}
f << stringf(".end\n");
}
static void dump(std::ostream &f, RTLIL::Module *module, RTLIL::Design *design, BlifDumperConfig &config)
{
BlifDumper dumper(f, module, design, &config);
dumper.dump();
}
};
struct BlifBackend : public Backend {
BlifBackend() : Backend("blif", "write design to BLIF file") { }
void help() override
{
// |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
log("\n");
log(" write_blif [options] [filename]\n");
log("\n");
log("Write the current design to an BLIF file.\n");
log("\n");
log(" -top top_module\n");
log(" set the specified module as design top module\n");
log("\n");
log(" -buf <cell-type> <in-port> <out-port>\n");
log(" use cells of type <cell-type> with the specified port names for buffers\n");
log("\n");
log(" -unbuf <cell-type> <in-port> <out-port>\n");
log(" replace buffer cells with the specified name and port names with\n");
log(" a .names statement that models a buffer\n");
log("\n");
log(" -true <cell-type> <out-port>\n");
log(" -false <cell-type> <out-port>\n");
log(" -undef <cell-type> <out-port>\n");
log(" use the specified cell types to drive nets that are constant 1, 0, or\n");
log(" undefined. when '-' is used as <cell-type>, then <out-port> specifies\n");
log(" the wire name to be used for the constant signal and no cell driving\n");
log(" that wire is generated. when '+' is used as <cell-type>, then <out-port>\n");
log(" specifies the wire name to be used for the constant signal and a .names\n");
log(" statement is generated to drive the wire.\n");
log("\n");
log(" -noalias\n");
log(" if a net name is aliasing another net name, then by default a net\n");
log(" without fanout is created that is driven by the other net. This option\n");
log(" suppresses the generation of this nets without fanout.\n");
log("\n");
log("The following options can be useful when the generated file is not going to be\n");
log("read by a BLIF parser but a custom tool. It is recommended not to name the\n");
log("output file *.blif when any of these options are used.\n");
log("\n");
log(" -icells\n");
log(" do not translate Yosys's internal gates to generic BLIF logic\n");
log(" functions. Instead create .subckt or .gate lines for all cells.\n");
log("\n");
log(" -gates\n");
log(" print .gate instead of .subckt lines for all cells that are not\n");
log(" instantiations of other modules from this design.\n");
log("\n");
log(" -conn\n");
log(" do not generate buffers for connected wires. instead use the\n");
log(" non-standard .conn statement.\n");
log("\n");
log(" -attr\n");
log(" use the non-standard .attr statement to write cell attributes\n");
log("\n");
log(" -param\n");
log(" use the non-standard .param statement to write cell parameters\n");
log("\n");
log(" -cname\n");
log(" use the non-standard .cname statement to write cell names\n");
log("\n");
log(" -iname, -iattr\n");
log(" enable -cname and -attr functionality for .names statements\n");
log(" (the .cname and .attr statements will be included in the BLIF\n");
log(" output after the truth table for the .names statement)\n");
log("\n");
log(" -blackbox\n");
log(" write blackbox cells with .blackbox statement.\n");
log("\n");
log(" -impltf\n");
log(" do not write definitions for the $true, $false and $undef wires.\n");
log("\n");
}
void execute(std::ostream *&f, std::string filename, std::vector<std::string> args, RTLIL::Design *design) override
{
std::string top_module_name;
std::string buf_type, buf_in, buf_out;
std::string true_type, true_out;
std::string false_type, false_out;
BlifDumperConfig config;
log_header(design, "Executing BLIF backend.\n");
size_t argidx;
for (argidx = 1; argidx < args.size(); argidx++)
{
if (args[argidx] == "-top" && argidx+1 < args.size()) {
top_module_name = args[++argidx];
continue;
}
if (args[argidx] == "-buf" && argidx+3 < args.size()) {
config.buf_type = args[++argidx];
config.buf_in = args[++argidx];
config.buf_out = args[++argidx];
continue;
}
if (args[argidx] == "-unbuf" && argidx+3 < args.size()) {
RTLIL::IdString unbuf_type = RTLIL::escape_id(args[++argidx]);
RTLIL::IdString unbuf_in = RTLIL::escape_id(args[++argidx]);
RTLIL::IdString unbuf_out = RTLIL::escape_id(args[++argidx]);
config.unbuf_types[unbuf_type] = std::pair<RTLIL::IdString, RTLIL::IdString>(unbuf_in, unbuf_out);
continue;
}
if (args[argidx] == "-true" && argidx+2 < args.size()) {
config.true_type = args[++argidx];
config.true_out = args[++argidx];
continue;
}
if (args[argidx] == "-false" && argidx+2 < args.size()) {
config.false_type = args[++argidx];
config.false_out = args[++argidx];
continue;
}
if (args[argidx] == "-undef" && argidx+2 < args.size()) {
config.undef_type = args[++argidx];
config.undef_out = args[++argidx];
continue;
}
if (args[argidx] == "-icells") {
config.icells_mode = true;
continue;
}
if (args[argidx] == "-gates") {
config.gates_mode = true;
continue;
}
if (args[argidx] == "-conn") {
config.conn_mode = true;
continue;
}
if (args[argidx] == "-cname") {
config.cname_mode = true;
continue;
}
if (args[argidx] == "-param") {
config.param_mode = true;
continue;
}
if (args[argidx] == "-attr") {
config.attr_mode = true;
continue;
}
if (args[argidx] == "-iname") {
config.iname_mode = true;
continue;
}
if (args[argidx] == "-iattr") {
config.iattr_mode = true;
continue;
}
if (args[argidx] == "-blackbox") {
config.blackbox_mode = true;
continue;
}
if (args[argidx] == "-impltf") {
config.impltf_mode = true;
continue;
}
if (args[argidx] == "-noalias") {
config.noalias_mode = true;
continue;
}
break;
}
extra_args(f, filename, args, argidx);
if (top_module_name.empty())
for (auto module : design->modules())
if (module->get_bool_attribute(ID::top))
top_module_name = module->name.str();
*f << stringf("# Generated by %s\n", yosys_version_str);
std::vector<RTLIL::Module*> mod_list;
design->sort();
for (auto module : design->modules())
{
if (module->get_blackbox_attribute() && !config.blackbox_mode)
continue;
if (module->processes.size() != 0)
log_error("Found unmapped processes in module %s: unmapped processes are not supported in BLIF backend!\n", log_id(module->name));
if (module->memories.size() != 0)
log_error("Found unmapped memories in module %s: unmapped memories are not supported in BLIF backend!\n", log_id(module->name));
if (module->name == RTLIL::escape_id(top_module_name)) {
BlifDumper::dump(*f, module, design, config);
top_module_name.clear();
continue;
}
mod_list.push_back(module);
}
if (!top_module_name.empty())
log_error("Can't find top module `%s'!\n", top_module_name.c_str());
for (auto module : mod_list)
BlifDumper::dump(*f, module, design, config);
}
} BlifBackend;
PRIVATE_NAMESPACE_END
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