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yosys/backends/jny/jny.cc

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/*
* yosys -- Yosys Open SYnthesis Suite
*
* Copyright (C) 2012 Aki "lethalbit" Van Ness <aki@yosyshq.com> <aki@lethalbit.net>
*
* 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 "kernel/rtlil.h"
#include "kernel/register.h"
#include "kernel/sigtools.h"
#include "kernel/celltypes.h"
#include "kernel/cellaigs.h"
#include "kernel/log.h"
#include <string>
#include <algorithm>
#include <unordered_map>
#include <vector>
USING_YOSYS_NAMESPACE
PRIVATE_NAMESPACE_BEGIN
struct JnyWriter
{
private:
std::ostream &f;
bool _use_selection;
// XXX(aki): TODO: this needs to be updated to us
// dict<T, V> and then coalesce_cells needs to be updated
// but for now for the PoC this looks to be sufficient
std::unordered_map<std::string, std::vector<Cell*>> _cells{};
bool _include_connections;
bool _include_attributes;
bool _include_properties;
string escape_string(string str) {
std::string newstr;
auto itr = str.begin();
for(; itr != str.end(); ++itr) {
switch (*itr) {
case '\\': {
newstr += "\\\\";
break;
} case '\n': {
newstr += "\\n";
break;
} case '\f': {
newstr += "\\f";
break;
} case '\t': {
newstr += "\\t";
break;
} case '\r': {
newstr += "\\r";
break;
} case '\"': {
newstr += "\\\"";
break;
} case '\b': {
newstr += "\\b";
break;
} default: {
newstr += *itr;
}
}
}
return newstr;
}
// XXX(aki): I know this is far from ideal but i'm out of spoons and cant focus so
// it'll have to do for now,
void coalesce_cells(Module* mod)
{
_cells.clear();
for (auto cell : mod->cells()) {
const auto cell_type = escape_string(RTLIL::unescape_id(cell->type));
if (_cells.find(cell_type) == _cells.end())
_cells.emplace(cell_type, std::vector<Cell*>());
_cells.at(cell_type).push_back(cell);
}
}
// XXX(aki): this is a lazy way to do this i know,,,
std::string gen_indent(const uint16_t level)
{
std::stringstream s;
for (uint16_t i = 0; i <= level; ++i)
{
s << " ";
}
return s.str();
}
public:
JnyWriter(std::ostream &f, bool use_selection, bool connections, bool attributes, bool properties) noexcept:
f(f), _use_selection(use_selection),
_include_connections(connections), _include_attributes(attributes), _include_properties(properties)
{ }
void write_metadata(Design *design, uint16_t indent_level = 0)
{
log_assert(design != nullptr);
design->sort();
f << "{\n";
f << stringf(" \"generator\": \"%s\",\n", escape_string(yosys_version_str).c_str());
// XXX(aki): Replace this with a proper version info eventually:tm:
f << " \"version\": \"0.0.0\",\n";
f << " \"features\": [";
size_t fnum{0};
if (_include_connections) {
++fnum;
f << "\"connections\"";
}
if (_include_attributes) {
if (fnum > 0)
f << ", ";
++fnum;
f << "\"attributes\"";
}
if (_include_properties) {
if (fnum > 0)
f << ", ";
++fnum;
f << "\"properties\"";
}
f << "],\n";
f << " \"modules\": [\n";
bool first{true};
for (auto mod : _use_selection ? design->selected_modules() : design->modules()) {
if (!first)
f << ",\n";
write_module(mod, indent_level + 2);
first = false;
}
f << "\n";
f << " ]\n";
f << "}\n";
}
void write_sigspec(const RTLIL::SigSpec& sig, uint16_t indent_level = 0) {
const auto _indent = gen_indent(indent_level);
f << _indent << " {\n";
f << _indent << " \"width\": \"" << sig.size() << "\",\n";
f << _indent << " \"type\": \"";
if (sig.is_wire()) {
f << "wire";
} else if (sig.is_chunk()) {
f << "chunk";
} else if (sig.is_bit()) {
f << "bit";
} else {
f << "unknown";
}
f << "\",\n";
f << _indent << " \"const\": ";
if (sig.has_const()) {
f << "true";
} else {
f << "false";
}
f << "\n";
f << _indent << " }";
}
void write_mod_conn(const std::pair<RTLIL::SigSpec, RTLIL::SigSpec>& conn, uint16_t indent_level = 0) {
const auto _indent = gen_indent(indent_level);
f << _indent << " {\n";
f << _indent << " \"signals\": [\n";
write_sigspec(conn.first, indent_level + 2);
f << ",\n";
write_sigspec(conn.second, indent_level + 2);
f << "\n";
f << _indent << " ]\n";
f << _indent << " }";
}
void write_cell_conn(const std::pair<RTLIL::IdString, RTLIL::SigSpec>& sig, uint16_t indent_level = 0) {
const auto _indent = gen_indent(indent_level);
f << _indent << " {\n";
f << _indent << " \"name\": \"" << escape_string(RTLIL::unescape_id(sig.first)) << "\",\n";
f << _indent << " \"signals\": [\n";
write_sigspec(sig.second, indent_level + 2);
f << "\n";
f << _indent << " ]\n";
f << _indent << " }";
}
void write_module(Module* mod, uint16_t indent_level = 0) {
log_assert(mod != nullptr);
coalesce_cells(mod);
const auto _indent = gen_indent(indent_level);
f << _indent << "{\n";
f << stringf(" %s\"name\": \"%s\",\n", _indent.c_str(), escape_string(RTLIL::unescape_id(mod->name)).c_str());
f << _indent << " \"cell_sorts\": [\n";
bool first_sort{true};
for (auto& sort : _cells) {
if (!first_sort)
f << ",\n";
write_cell_sort(sort, indent_level + 2);
first_sort = false;
}
f << "\n";
f << _indent << " ]";
if (_include_connections) {
f << ",\n" << _indent << " \"connections\": [\n";
bool first_conn{true};
for (const auto& conn : mod->connections()) {
if (!first_conn)
f << ",\n";
write_mod_conn(conn, indent_level + 2);
first_conn = false;
}
f << _indent << " ]";
}
if (_include_attributes) {
f << ",\n" << _indent << " \"attributes\": {\n";
write_prams(mod->attributes, indent_level + 2);
f << "\n";
f << _indent << " }";
}
f << "\n" << _indent << "}";
}
void write_cell_ports(RTLIL::Cell* port_cell, uint64_t indent_level = 0) {
const auto _indent = gen_indent(indent_level);
bool first_port{true};
for (auto con : port_cell->connections()) {
if (!first_port)
f << ",\n";
f << _indent << " {\n";
f << stringf(" %s\"name\": \"%s\",\n", _indent.c_str(), escape_string(RTLIL::unescape_id(con.first)).c_str());
f << _indent << " \"direction\": \"";
if (port_cell->input(con.first))
f << "i";
if (port_cell->input(con.first))
f << "o";
f << "\",\n";
if (con.second.size() == 1)
f << _indent << " \"range\": [0, 0]\n";
else
f << stringf(" %s\"range\": [%d, %d]\n", _indent.c_str(), con.second.size(), 0);
f << _indent << " }";
first_port = false;
}
f << "\n";
}
void write_cell_sort(std::pair<const std::string, std::vector<Cell*>>& sort, uint16_t indent_level = 0) {
const auto port_cell = sort.second.front();
const auto _indent = gen_indent(indent_level);
f << _indent << "{\n";
f << stringf(" %s\"type\": \"%s\",\n", _indent.c_str(), sort.first.c_str());
f << _indent << " \"ports\": [\n";
write_cell_ports(port_cell, indent_level + 2);
f << _indent << " ],\n" << _indent << " \"cells\": [\n";
bool first_cell{true};
for (auto& cell : sort.second) {
if (!first_cell)
f << ",\n";
write_cell(cell, indent_level + 2);
first_cell = false;
}
f << "\n";
f << _indent << " ]\n";
f << _indent << "}";
}
void write_param_val(const Const& v) {
if ((v.flags & RTLIL::ConstFlags::CONST_FLAG_STRING) == RTLIL::ConstFlags::CONST_FLAG_STRING) {
const auto str = v.decode_string();
// XXX(aki): TODO, uh, yeah
f << "\"" << escape_string(str) << "\"";
} else if ((v.flags & RTLIL::ConstFlags::CONST_FLAG_SIGNED) == RTLIL::ConstFlags::CONST_FLAG_SIGNED) {
f << stringf("\"%dsd %d\"", v.size(), v.as_int(true));
} else if ((v.flags & RTLIL::ConstFlags::CONST_FLAG_REAL) == RTLIL::ConstFlags::CONST_FLAG_REAL) {
} else {
f << "\"" << escape_string(v.as_string()) << "\"";
}
}
void write_prams(dict<RTLIL::IdString, RTLIL::Const>& params, uint16_t indent_level = 0) {
const auto _indent = gen_indent(indent_level);
bool first_param{true};
for (auto& param : params) {
if (!first_param)
f << stringf(",\n");
const auto param_val = param.second;
if (!param_val.empty()) {
f << stringf(" %s\"%s\": ", _indent.c_str(), escape_string(RTLIL::unescape_id(param.first)).c_str());
write_param_val(param_val);
} else {
f << stringf(" %s\"%s\": true", _indent.c_str(), escape_string(RTLIL::unescape_id(param.first)).c_str());
}
first_param = false;
}
}
void write_cell(Cell* cell, uint16_t indent_level = 0) {
const auto _indent = gen_indent(indent_level);
log_assert(cell != nullptr);
f << _indent << " {\n";
f << stringf(" %s\"name\": \"%s\"", _indent.c_str(), escape_string(RTLIL::unescape_id(cell->name)).c_str());
if (_include_connections) {
f << ",\n" << _indent << " \"connections\": [\n";
bool first_conn{true};
for (const auto& conn : cell->connections()) {
if (!first_conn)
f << ",\n";
write_cell_conn(conn, indent_level + 2);
first_conn = false;
}
f << "\n";
f << _indent << " ]";
}
if (_include_attributes) {
f << ",\n" << _indent << " \"attributes\": {\n";
write_prams(cell->attributes, indent_level + 2);
f << "\n";
f << _indent << " }";
}
if (_include_properties) {
f << ",\n" << _indent << " \"parameters\": {\n";
write_prams(cell->parameters, indent_level + 2);
f << "\n";
f << _indent << " }";
}
f << "\n" << _indent << " }";
}
};
struct JnyBackend : public Backend {
JnyBackend() : Backend("jny", "generate design metadata") { }
void help() override {
// XXX(aki): TODO: explicitly document the JSON schema
// |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
log("\n");
log(" jny [options] [selection]\n");
log("\n");
log(" -no-connections\n");
log(" Don't include connection information in the netlist output.\n");
log("\n");
log(" -no-attributes\n");
log(" Don't include attributed information in the netlist output.\n");
log("\n");
log(" -no-properties\n");
log(" Don't include property information in the netlist output.\n");
log("\n");
log("Write a JSON metadata for the current design\n");
log("\n");
log("\n");
}
void execute(std::ostream *&f, std::string filename, std::vector<std::string> args, RTLIL::Design *design) override {
bool connections{true};
bool attributes{true};
bool properties{true};
size_t argidx{1};
for (; argidx < args.size(); argidx++) {
if (args[argidx] == "-no-connections") {
connections = false;
continue;
}
if (args[argidx] == "-no-attributes") {
attributes = false;
continue;
}
if (args[argidx] == "-no-properties") {
properties = false;
continue;
}
break;
}
extra_args(f, filename, args, argidx);
log_header(design, "Executing jny backend.\n");
JnyWriter jny_writer(*f, false, connections, attributes, properties);
jny_writer.write_metadata(design);
}
} JnyBackend;
struct JnyPass : public Pass {
JnyPass() : Pass("jny", "write design and metadata") { }
void help() override {
// |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
log("\n");
log(" jny [options] [selection]\n");
log("\n");
log("Write a JSON netlist metadata for the current design\n");
log("\n");
log(" -o <filename>\n");
log(" write to the specified file.\n");
log("\n");
log(" -no-connections\n");
log(" Don't include connection information in the netlist output.\n");
log("\n");
log(" -no-attributes\n");
log(" Don't include attributed information in the netlist output.\n");
log("\n");
log(" -no-properties\n");
log(" Don't include property information in the netlist output.\n");
log("\n");
log("See 'help write_jny' for a description of the JSON format used.\n");
log("\n");
}
void execute(std::vector<std::string> args, RTLIL::Design *design) override {
std::string filename{};
bool connections{true};
bool attributes{true};
bool properties{true};
size_t argidx{1};
for (; argidx < args.size(); argidx++) {
if (args[argidx] == "-o" && argidx+1 < args.size()) {
filename = args[++argidx];
continue;
}
if (args[argidx] == "-no-connections") {
connections = false;
continue;
}
if (args[argidx] == "-no-attributes") {
attributes = false;
continue;
}
if (args[argidx] == "-no-properties") {
properties = false;
continue;
}
break;
}
extra_args(args, argidx, design);
std::ostream *f;
std::stringstream buf;
if (!filename.empty()) {
rewrite_filename(filename);
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;
}
JnyWriter jny_writer(*f, false, connections, attributes, properties);
jny_writer.write_metadata(design);
if (!filename.empty()) {
delete f;
} else {
log("%s", buf.str().c_str());
}
}
} JnyPass;
PRIVATE_NAMESPACE_END
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