mirrors/yosys
3
0
Fork 0
mirror of https://github.com/YosysHQ/yosys synced 2025-10-30 19:22:31 +00:00
Code Activity

Add Protobuf backend

Browse source 
Signed-off-by: Serge Bazanski <q3k@symbioticeda.com>
This commit is contained in:
Serge Bazanski 2018-06-19 13:34:56 +01:00
parent 0ff0ce4973
commit 53e9a1549c
5 changed files with 560 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

2
backends/protobuf/.gitignore vendored Normal file
View file

@ -0,0 +1,2 @@
yosys.pb.cc
yosys.pb.h

8
backends/protobuf/Makefile.inc Normal file
View file

@ -0,0 +1,8 @@
ifeq ($(ENABLE_PROTOBUF),1)
backends/protobuf/yosys.pb.cc backends/protobuf/yosys.pb.h: share/yosys.proto
$(Q) cd misc && protoc --cpp_out "../backends/protobuf" yosys.proto
OBJS += backends/protobuf/protobuf.o backends/protobuf/yosys.pb.o
endif

370
backends/protobuf/protobuf.cc Normal file
View file

@ -0,0 +1,370 @@
/*
* yosys -- Yosys Open SYnthesis Suite
*
* Copyright (C) 2012 Clifford Wolf <clifford@clifford.at>
* Copyright (C) 2018 Serge Bazanski <q3k@symbioticeda.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.
*
*/
#include <google/protobuf/text_format.h>
#include "kernel/rtlil.h"
#include "kernel/register.h"
#include "kernel/sigtools.h"
#include "kernel/celltypes.h"
#include "kernel/cellaigs.h"
#include "kernel/log.h"
#include "yosys.pb.h"
USING_YOSYS_NAMESPACE
PRIVATE_NAMESPACE_BEGIN
struct ProtobufDesignSerializer
{
bool aig_mode_;
bool use_selection_;
yosys::pb::Design *pb_;
Design *design_;
Module *module_;
SigMap sigmap_;
int sigidcounter_;
dict<SigBit, uint64_t> sigids_;
pool<Aig> aig_models_;
ProtobufDesignSerializer(bool use_selection, bool aig_mode) :
aig_mode_(aig_mode), use_selection_(use_selection) { }
string get_name(IdString name)
{
return RTLIL::unescape_id(name);
}
void serialize_parameters(google::protobuf::Map<std::string, yosys::pb::Parameter> *out,
const dict<IdString, Const> &parameters)
{
for (auto &param : parameters) {
std::string key = get_name(param.first);
yosys::pb::Parameter pb_param;
if ((param.second.flags & RTLIL::ConstFlags::CONST_FLAG_STRING) != 0) {
pb_param.set_str(param.second.decode_string());
} else if (GetSize(param.second.bits) > 64) {
pb_param.set_str(param.second.as_string());
} else {
pb_param.set_int_(param.second.as_int());
}
(*out)[key] = pb_param;
}
}
void get_bits(yosys::pb::BitVector *out, SigSpec sig)
{
for (auto bit : sigmap_(sig)) {
auto sig = out->add_signal();
// Constant driver.
if (bit.wire == nullptr) {
if (bit == State::S0) sig->set_constant(sig->CONSTANT_DRIVER_LOW);
else if (bit == State::S1) sig->set_constant(sig->CONSTANT_DRIVER_HIGH);
else if (bit == State::Sz) sig->set_constant(sig->CONSTANT_DRIVER_Z);
else sig->set_constant(sig->CONSTANT_DRIVER_X);
continue;
}
// Signal - give it a unique identifier.
if (sigids_.count(bit) == 0) {
sigids_[bit] = sigidcounter_++;
}
sig->set_id(sigids_[bit]);
}
}
void serialize_module(yosys::pb::Module* out, Module *module)
{
module_ = module;
log_assert(module_->design == design_);
sigmap_.set(module_);
sigids_.clear();
sigidcounter_ = 0;
serialize_parameters(out->mutable_attribute(), module_->attributes);
for (auto n : module_->ports) {
Wire *w = module->wire(n);
if (use_selection_ && !module_->selected(w))
continue;
yosys::pb::Module::Port pb_port;
pb_port.set_direction(w->port_input ? w->port_output ?
yosys::pb::DIRECTION_INOUT : yosys::pb::DIRECTION_INPUT : yosys::pb::DIRECTION_OUTPUT);
get_bits(pb_port.mutable_bits(), w);
(*out->mutable_port())[get_name(n)] = pb_port;
}
for (auto c : module_->cells()) {
if (use_selection_ && !module_->selected(c))
continue;
yosys::pb::Module::Cell pb_cell;
pb_cell.set_hide_name(c->name[0] == '$');
pb_cell.set_type(get_name(c->type));
if (aig_mode_) {
Aig aig(c);
if (aig.name.empty())
continue;
pb_cell.set_model(aig.name);
aig_models_.insert(aig);
}
serialize_parameters(pb_cell.mutable_parameter(), c->parameters);
serialize_parameters(pb_cell.mutable_attribute(), c->attributes);
if (c->known()) {
for (auto &conn : c->connections()) {
yosys::pb::Direction direction = yosys::pb::DIRECTION_OUTPUT;
if (c->input(conn.first))
direction = c->output(conn.first) ? yosys::pb::DIRECTION_INOUT : yosys::pb::DIRECTION_INPUT;
(*pb_cell.mutable_port_direction())[get_name(conn.first)] = direction;
}
}
for (auto &conn : c->connections()) {
yosys::pb::BitVector vec;
get_bits(&vec, conn.second);
(*pb_cell.mutable_connection())[get_name(conn.first)] = vec;
}
(*out->mutable_cell())[get_name(c->name)] = pb_cell;
}
for (auto w : module_->wires()) {
if (use_selection_ && !module_->selected(w))
continue;
auto netname = out->add_netname();
netname->set_hide_name(w->name[0] == '$');
get_bits(netname->mutable_bits(), w);
serialize_parameters(netname->mutable_attributes(), w->attributes);
}
}
void serialize_models(google::protobuf::Map<string, yosys::pb::Model> *models)
{
for (auto &aig : aig_models_) {
yosys::pb::Model pb_model;
for (auto &node : aig.nodes) {
auto pb_node = pb_model.add_node();
if (node.portbit >= 0) {
if (node.inverter) {
pb_node->set_type(pb_node->TYPE_NPORT);
} else {
pb_node->set_type(pb_node->TYPE_PORT);
}
auto port = pb_node->mutable_port();
port->set_portname(log_id(node.portname));
port->set_bitindex(node.portbit);
} else if (node.left_parent < 0 && node.right_parent < 0) {
if (node.inverter) {
pb_node->set_type(pb_node->TYPE_TRUE);
} else {
pb_node->set_type(pb_node->TYPE_FALSE);
}
} else {
if (node.inverter) {
pb_node->set_type(pb_node->TYPE_NAND);
} else {
pb_node->set_type(pb_node->TYPE_AND);
}
auto gate = pb_node->mutable_gate();
gate->set_left(node.left_parent);
gate->set_right(node.right_parent);
}
for (auto &op : node.outports) {
auto pb_op = pb_node->add_out_port();
pb_op->set_name(log_id(op.first));
pb_op->set_bit_index(op.second);
}
}
(*models)[aig.name] = pb_model;
}
}
void serialize_design(yosys::pb::Design *pb, Design *design)
{
GOOGLE_PROTOBUF_VERIFY_VERSION;
pb_ = pb;
pb_->Clear();
pb_->set_creator(yosys_version_str);
design_ = design;
design_->sort();
auto modules = use_selection_ ? design_->selected_modules() : design_->modules();
for (auto mod : modules) {
yosys::pb::Module pb_mod;
serialize_module(&pb_mod, mod);
(*pb->mutable_modules())[mod->name.str()] = pb_mod;
}
serialize_models(pb_->mutable_models());
}
};
struct ProtobufBackend : public Backend {
ProtobufBackend(): Backend("protobuf", "write design to a Protocol Buffer file") { }
virtual void help()
{
// |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
log("\n");
log(" write_protobuf [options] [filename]\n");
log("\n");
log("Write a JSON netlist of the current design.\n");
log("\n");
log(" -aig\n");
log(" include AIG models for the different gate types\n");
log("\n");
log(" -text\n");
log(" output protobuf in Text/ASCII representation\n");
log("\n");
log("The schema of the output Protocol Buffer is defined in misc/yosys.pb in the\n");
log("Yosys source code distribution.\n");
log("\n");
}
virtual void execute(std::ostream *&f, std::string filename, std::vector<std::string> args, RTLIL::Design *design)
{
bool aig_mode = false;
bool text_mode = false;
size_t argidx;
for (argidx = 1; argidx < args.size(); argidx++) {
if (args[argidx] == "-aig") {
aig_mode = true;
continue;
}
if (args[argidx] == "-text") {
text_mode = true;
continue;
}
break;
}
extra_args(f, filename, args, argidx);
log_header(design, "Executing Protobuf backend.\n");
yosys::pb::Design pb;
ProtobufDesignSerializer serializer(false, aig_mode);
serializer.serialize_design(&pb, design);
if (text_mode) {
string out;
google::protobuf::TextFormat::PrintToString(pb, &out);
*f << out;
} else {
pb.SerializeToOstream(f);
}
}
} ProtobufBackend;
struct ProtobufPass : public Pass {
ProtobufPass() : Pass("protobuf", "write design in Protobuf format") { }
virtual void help()
{
// |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
log("\n");
log(" protobuf [options] [selection]\n");
log("\n");
log("Write a JSON netlist of all selected objects.\n");
log("\n");
log(" -o <filename>\n");
log(" write to the specified file.\n");
log("\n");
log(" -aig\n");
log(" include AIG models for the different gate types\n");
log("\n");
log(" -text\n");
log(" output protobuf in Text/ASCII representation\n");
log("\n");
log("The schema of the output Protocol Buffer is defined in misc/yosys.pb in the\n");
log("Yosys source code distribution.\n");
log("\n");
}
virtual void execute(std::vector<std::string> args, RTLIL::Design *design)
{
std::string filename;
bool aig_mode = false;
bool text_mode = false;
size_t argidx;
for (argidx = 1; argidx < args.size(); argidx++)
{
if (args[argidx] == "-o" && argidx+1 < args.size()) {
filename = args[++argidx];
continue;
}
if (args[argidx] == "-aig") {
aig_mode = true;
continue;
}
if (args[argidx] == "-text") {
text_mode = true;
continue;
}
break;
}
extra_args(args, argidx, design);
std::ostream *f;
std::stringstream buf;
if (!filename.empty()) {
std::ofstream *ff = new std::ofstream;
ff->open(filename.c_str(), std::ofstream::trunc);
if (ff->fail()) {
delete ff;
log_error("Can't open file `%s' for writing: %s\n", filename.c_str(), strerror(errno));
}
f = ff;
} else {
f = &buf;
}
yosys::pb::Design pb;
ProtobufDesignSerializer serializer(true, aig_mode);
serializer.serialize_design(&pb, design);
if (text_mode) {
string out;
google::protobuf::TextFormat::PrintToString(pb, &out);
*f << out;
} else {
pb.SerializeToOstream(f);
}
if (!filename.empty()) {
delete f;
} else {
log("%s", buf.str().c_str());
}
}
} ProtobufPass;
PRIVATE_NAMESPACE_END;