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yosys/kernel/register.cc
Robert O'Callahan 7371388e1d Add timing stats for IdString garbage collection
2025-10-21 21:21:05 +00:00

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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.
*
*/
#include "kernel/yosys.h"
#include "kernel/satgen.h"
#include "kernel/json.h"
#include "kernel/gzip.h"
#include "kernel/log_help.h"
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
YOSYS_NAMESPACE_BEGIN
#define MAX_REG_COUNT 1000
bool echo_mode = false;
Pass *first_queued_pass;
Pass *current_pass;
std::map<std::string, Frontend*> frontend_register;
std::map<std::string, Pass*> pass_register;
std::map<std::string, Backend*> backend_register;
std::vector<std::string> Frontend::next_args;
bool GarbageCollectionGuard::is_enabled_ = true;
static bool garbage_collection_requested = false;
void request_garbage_collection()
{
garbage_collection_requested = true;
}
void try_collect_garbage()
{
if (!GarbageCollectionGuard::is_enabled() || !garbage_collection_requested)
return;
garbage_collection_requested = false;
RTLIL::OwningIdString::collect_garbage();
}
Pass::Pass(std::string name, std::string short_help, source_location location) :
pass_name(name), short_help(short_help), location(location)
{
next_queued_pass = first_queued_pass;
first_queued_pass = this;
call_counter = 0;
runtime_ns = 0;
}
void Pass::run_register()
{
if (pass_register.count(pass_name) && !replace_existing_pass())
log_error("Unable to register pass '%s', pass already exists!\n", pass_name);
pass_register[pass_name] = this;
}
void Pass::init_register()
{
vector<Pass*> added_passes;
while (first_queued_pass) {
added_passes.push_back(first_queued_pass);
first_queued_pass->run_register();
first_queued_pass = first_queued_pass->next_queued_pass;
}
for (auto added_pass : added_passes)
added_pass->on_register();
}
void Pass::done_register()
{
for (auto &it : pass_register)
it.second->on_shutdown();
frontend_register.clear();
pass_register.clear();
backend_register.clear();
log_assert(first_queued_pass == NULL);
}
void Pass::on_register()
{
}
void Pass::on_shutdown()
{
}
Pass::~Pass()
{
}
Pass::pre_post_exec_state_t Pass::pre_execute()
{
pre_post_exec_state_t state;
call_counter++;
state.begin_ns = PerformanceTimer::query();
state.parent_pass = current_pass;
current_pass = this;
clear_flags();
return state;
}
void Pass::post_execute(Pass::pre_post_exec_state_t state)
{
IdString::checkpoint();
log_suppressed();
int64_t time_ns = PerformanceTimer::query() - state.begin_ns;
runtime_ns += time_ns;
current_pass = state.parent_pass;
subtract_from_current_runtime_ns(time_ns);
}
void Pass::subtract_from_current_runtime_ns(int64_t time_ns)
{
if (current_pass)
current_pass->runtime_ns -= time_ns;
}
void Pass::help()
{
auto prettyHelp = PrettyHelp();
if (formatted_help()) {
prettyHelp.log_help();
} else {
log("\n");
log("No help message for command `%s'.\n", pass_name);
log("\n");
}
}
bool Pass::formatted_help()
{
return false;
}
void Pass::clear_flags()
{
}
void Pass::cmd_log_args(const std::vector<std::string> &args)
{
if (args.size() <= 1)
return;
log("Full command line:");
for (size_t i = 0; i < args.size(); i++)
log(" %s", args[i]);
log("\n");
}
void Pass::cmd_error(const std::vector<std::string> &args, size_t argidx, std::string msg)
{
std::string command_text;
int error_pos = 0;
for (size_t i = 0; i < args.size(); i++) {
if (i < argidx)
error_pos += args[i].size() + 1;
command_text = command_text + (command_text.empty() ? "" : " ") + args[i];
}
log("\nSyntax error in command `%s':\n", command_text);
help();
log_cmd_error("Command syntax error: %s\n> %s\n> %*s^\n",
msg.c_str(), command_text.c_str(), error_pos, "");
}
void Pass::extra_args(std::vector<std::string> args, size_t argidx, RTLIL::Design *design, bool select)
{
for (; argidx < args.size(); argidx++)
{
std::string arg = args[argidx];
if (arg.compare(0, 1, "-") == 0)
cmd_error(args, argidx, "Unknown option or option in arguments.");
if (!select)
cmd_error(args, argidx, "Extra argument.");
handle_extra_select_args(this, args, argidx, args.size(), design);
break;
}
// cmd_log_args(args);
}
void Pass::call(RTLIL::Design *design, std::string command)
{
std::vector<std::string> args;
std::string cmd_buf = command;
std::string tok = next_token(cmd_buf, " \t\r\n", true);
if (tok.empty())
return;
if (tok[0] == '!') {
#if !defined(YOSYS_DISABLE_SPAWN)
cmd_buf = command.substr(command.find('!') + 1);
while (!cmd_buf.empty() && (cmd_buf.back() == ' ' || cmd_buf.back() == '\t' ||
cmd_buf.back() == '\r' || cmd_buf.back() == '\n'))
cmd_buf.resize(cmd_buf.size()-1);
log_header(design, "Shell command: %s\n", cmd_buf);
int retCode = run_command(cmd_buf);
if (retCode != 0)
log_cmd_error("Shell command returned error code %d.\n", retCode);
return;
#else
log_cmd_error("Shell is not available.\n");
#endif
}
while (!tok.empty()) {
if (tok[0] == '#') {
int stop;
for (stop = 0; stop < GetSize(cmd_buf); stop++)
if (cmd_buf[stop] == '\r' || cmd_buf[stop] == '\n')
break;
cmd_buf = cmd_buf.substr(stop);
} else
if (tok.back() == ';') {
int num_semikolon = 0;
while (!tok.empty() && tok.back() == ';')
tok.resize(tok.size()-1), num_semikolon++;
if (!tok.empty())
args.push_back(tok);
call(design, args);
args.clear();
if (num_semikolon == 2)
call(design, "clean");
if (num_semikolon == 3)
call(design, "clean -purge");
} else
args.push_back(tok);
bool found_nl = false;
for (auto c : cmd_buf) {
if (c == ' ' || c == '\t')
continue;
if (c == '\r' || c == '\n')
found_nl = true;
break;
}
if (found_nl) {
call(design, args);
args.clear();
}
tok = next_token(cmd_buf, " \t\r\n", true);
}
call(design, args);
}
void Pass::call(RTLIL::Design *design, std::vector<std::string> args)
{
if (args.size() == 0 || args[0][0] == '#' || args[0][0] == ':')
return;
if (echo_mode) {
log("%s", create_prompt(design, 0));
for (size_t i = 0; i < args.size(); i++)
log("%s%s", i ? " " : "", args[i]);
log("\n");
}
if (pass_register.count(args[0]) == 0)
log_cmd_error("No such command: %s (type 'help' for a command overview)\n", args[0]);
Pass *pass = pass_register[args[0]];
// Collect garbage before the next pass if requested. No need to collect garbage after the last pass.
try_collect_garbage();
GarbageCollectionGuard gc_guard(pass->allow_garbage_collection_during_pass());
if (pass->experimental_flag)
log_experimental(args[0]);
size_t orig_sel_stack_pos = design->selection_stack.size();
auto state = pass->pre_execute();
pass->execute(args, design);
pass->post_execute(state);
while (design->selection_stack.size() > orig_sel_stack_pos)
design->pop_selection();
}
void Pass::call_on_selection(RTLIL::Design *design, const RTLIL::Selection &selection, std::string command)
{
std::string backup_selected_active_module = design->selected_active_module;
design->selected_active_module.clear();
design->push_selection(selection);
Pass::call(design, command);
design->pop_selection();
design->selected_active_module = backup_selected_active_module;
}
void Pass::call_on_selection(RTLIL::Design *design, const RTLIL::Selection &selection, std::vector<std::string> args)
{
std::string backup_selected_active_module = design->selected_active_module;
design->selected_active_module.clear();
design->push_selection(selection);
Pass::call(design, args);
design->pop_selection();
design->selected_active_module = backup_selected_active_module;
}
void Pass::call_on_module(RTLIL::Design *design, RTLIL::Module *module, std::string command)
{
std::string backup_selected_active_module = design->selected_active_module;
design->selected_active_module = module->name.str();
design->push_empty_selection();
design->select(module);
Pass::call(design, command);
design->pop_selection();
design->selected_active_module = backup_selected_active_module;
}
void Pass::call_on_module(RTLIL::Design *design, RTLIL::Module *module, std::vector<std::string> args)
{
std::string backup_selected_active_module = design->selected_active_module;
design->selected_active_module = module->name.str();
design->push_empty_selection();
design->select(module);
Pass::call(design, args);
design->pop_selection();
design->selected_active_module = backup_selected_active_module;
}
bool ScriptPass::check_label(std::string label, std::string info)
{
if (active_design == nullptr) {
log("\n");
if (info.empty())
log(" %s:\n", label);
else
log(" %s: %s\n", label, info);
return true;
} else {
if (!active_run_from.empty() && active_run_from == active_run_to) {
block_active = (label == active_run_from);
} else {
if (label == active_run_from)
block_active = true;
if (label == active_run_to)
block_active = false;
}
return block_active;
}
}
void ScriptPass::run(std::string command, std::string info)
{
if (active_design == nullptr) {
if (info.empty())
log(" %s\n", command);
else
log(" %s %s\n", command, info);
} else {
Pass::call(active_design, command);
active_design->check();
}
}
void ScriptPass::run_nocheck(std::string command, std::string info)
{
if (active_design == nullptr) {
if (info.empty())
log(" %s\n", command);
else
log(" %s %s\n", command, info);
} else {
Pass::call(active_design, command);
}
}
void ScriptPass::run_script(RTLIL::Design *design, std::string run_from, std::string run_to)
{
help_mode = false;
active_design = design;
block_active = run_from.empty();
active_run_from = run_from;
active_run_to = run_to;
script();
}
void ScriptPass::help_script()
{
clear_flags();
help_mode = true;
active_design = nullptr;
block_active = true;
active_run_from.clear();
active_run_to.clear();
script();
}
Frontend::Frontend(std::string name, std::string short_help, source_location location) :
Pass(name.rfind("=", 0) == 0 ? name.substr(1) : "read_" + name, short_help, location),
frontend_name(name.rfind("=", 0) == 0 ? name.substr(1) : name)
{
}
void Frontend::run_register()
{
if (pass_register.count(pass_name) && !replace_existing_pass())
log_error("Unable to register pass '%s', pass already exists!\n", pass_name);
pass_register[pass_name] = this;
if (frontend_register.count(frontend_name) && !replace_existing_pass())
log_error("Unable to register frontend '%s', frontend already exists!\n", frontend_name);
frontend_register[frontend_name] = this;
}
Frontend::~Frontend()
{
}
void Frontend::execute(std::vector<std::string> args, RTLIL::Design *design)
{
log_assert(next_args.empty());
do {
std::istream *f = NULL;
next_args.clear();
auto state = pre_execute();
execute(f, std::string(), args, design);
post_execute(state);
args = next_args;
delete f;
} while (!args.empty());
}
FILE *Frontend::current_script_file = NULL;
std::string Frontend::last_here_document;
void Frontend::extra_args(std::istream *&f, std::string &filename, std::vector<std::string> args, size_t argidx, bool bin_input)
{
bool called_with_fp = f != NULL;
next_args.clear();
if (argidx < args.size())
{
std::string arg = args[argidx];
if (arg.compare(0, 1, "-") == 0)
cmd_error(args, argidx, "Unknown option or option in arguments.");
if (f != NULL)
cmd_error(args, argidx, "Extra filename argument in direct file mode.");
filename = arg;
//Accommodate heredocs with EOT marker spaced out from "<<", e.g. "<< EOT" vs. "<<EOT"
if (filename == "<<" && argidx+1 < args.size())
filename += args[++argidx];
if (filename.compare(0, 2, "<<") == 0) {
if (filename.size() <= 2)
log_error("Missing EOT marker in here document!\n");
std::string eot_marker = filename.substr(2);
if (Frontend::current_script_file == nullptr)
filename = "<stdin>";
last_here_document.clear();
while (1) {
std::string buffer;
char block[4096];
while (1) {
if (fgets(block, 4096, Frontend::current_script_file == nullptr? stdin : Frontend::current_script_file) == nullptr)
log_error("Unexpected end of file in here document '%s'!\n", filename);
buffer += block;
if (buffer.size() > 0 && (buffer[buffer.size() - 1] == '\n' || buffer[buffer.size() - 1] == '\r'))
break;
}
size_t indent = buffer.find_first_not_of(" \t\r\n");
if (indent != std::string::npos && buffer.compare(indent, eot_marker.size(), eot_marker) == 0)
break;
last_here_document += buffer;
}
f = new std::istringstream(last_here_document);
} else {
rewrite_filename(filename);
vector<string> filenames = glob_filename(filename);
filename = filenames.front();
if (GetSize(filenames) > 1) {
next_args.insert(next_args.end(), args.begin(), args.begin()+argidx);
next_args.insert(next_args.end(), filenames.begin()+1, filenames.end());
}
yosys_input_files.insert(filename);
f = uncompressed(filename, bin_input ? std::ifstream::binary : std::ifstream::in);
}
for (size_t i = argidx+1; i < args.size(); i++)
if (args[i].compare(0, 1, "-") == 0)
cmd_error(args, i, "Found option, expected arguments.");
if (argidx+1 < args.size()) {
if (next_args.empty())
next_args.insert(next_args.end(), args.begin(), args.begin()+argidx);
next_args.insert(next_args.end(), args.begin()+argidx+1, args.end());
args.erase(args.begin()+argidx+1, args.end());
}
}
if (f == NULL)
cmd_error(args, argidx, "No filename given.");
if (called_with_fp)
args.push_back(filename);
args[0] = pass_name;
// cmd_log_args(args);
}
void Frontend::frontend_call(RTLIL::Design *design, std::istream *f, std::string filename, std::string command)
{
std::vector<std::string> args;
char *s = strdup(command.c_str());
for (char *p = strtok(s, " \t\r\n"); p; p = strtok(NULL, " \t\r\n"))
args.push_back(p);
free(s);
frontend_call(design, f, filename, args);
}
void Frontend::frontend_call(RTLIL::Design *design, std::istream *f, std::string filename, std::vector<std::string> args)
{
if (args.size() == 0)
return;
if (frontend_register.count(args[0]) == 0)
log_cmd_error("No such frontend: %s\n", args[0]);
if (f != NULL) {
auto state = frontend_register[args[0]]->pre_execute();
frontend_register[args[0]]->execute(f, filename, args, design);
frontend_register[args[0]]->post_execute(state);
} else if (filename == "-") {
std::istream *f_cin = &std::cin;
auto state = frontend_register[args[0]]->pre_execute();
frontend_register[args[0]]->execute(f_cin, "<stdin>", args, design);
frontend_register[args[0]]->post_execute(state);
} else {
if (!filename.empty())
args.push_back(filename);
frontend_register[args[0]]->execute(args, design);
}
}
Backend::Backend(std::string name, std::string short_help, source_location location) :
Pass(name.rfind("=", 0) == 0 ? name.substr(1) : "write_" + name, short_help, location),
backend_name(name.rfind("=", 0) == 0 ? name.substr(1) : name)
{
}
void Backend::run_register()
{
if (pass_register.count(pass_name))
log_error("Unable to register pass '%s', pass already exists!\n", pass_name);
pass_register[pass_name] = this;
if (backend_register.count(backend_name))
log_error("Unable to register backend '%s', backend already exists!\n", backend_name);
backend_register[backend_name] = this;
}
Backend::~Backend()
{
}
void Backend::execute(std::vector<std::string> args, RTLIL::Design *design)
{
std::ostream *f = NULL;
auto state = pre_execute();
execute(f, std::string(), args, design);
post_execute(state);
if (f != &std::cout)
delete f;
}
void Backend::extra_args(std::ostream *&f, std::string &filename, std::vector<std::string> args, size_t argidx, bool bin_output)
{
bool called_with_fp = f != NULL;
for (; argidx < args.size(); argidx++)
{
std::string arg = args[argidx];
if (arg.compare(0, 1, "-") == 0 && arg != "-")
cmd_error(args, argidx, "Unknown option or option in arguments.");
if (f != NULL)
cmd_error(args, argidx, "Extra filename argument in direct file mode.");
if (arg == "-") {
filename = "<stdout>";
f = &std::cout;
continue;
}
filename = arg;
rewrite_filename(filename);
if (filename.size() > 3 && filename.compare(filename.size()-3, std::string::npos, ".gz") == 0) {
#ifdef YOSYS_ENABLE_ZLIB
gzip_ostream *gf = new gzip_ostream;
if (!gf->open(filename)) {
delete gf;
log_cmd_error("Can't open output file `%s' for writing: %s\n", filename, strerror(errno));
}
yosys_output_files.insert(filename);
f = gf;
#else
log_cmd_error("Yosys is compiled without zlib support, unable to write gzip output.\n");
#endif
} else {
std::ofstream *ff = new std::ofstream;
ff->open(filename.c_str(), bin_output ? (std::ofstream::trunc | std::ofstream::binary) : std::ofstream::trunc);
yosys_output_files.insert(filename);
if (ff->fail()) {
delete ff;
log_cmd_error("Can't open output file `%s' for writing: %s\n", filename, strerror(errno));
}
f = ff;
}
}
if (called_with_fp)
args.push_back(filename);
args[0] = pass_name;
// cmd_log_args(args);
if (f == NULL) {
filename = "<stdout>";
f = &std::cout;
}
}
void Backend::backend_call(RTLIL::Design *design, std::ostream *f, std::string filename, std::string command)
{
std::vector<std::string> args;
char *s = strdup(command.c_str());
for (char *p = strtok(s, " \t\r\n"); p; p = strtok(NULL, " \t\r\n"))
args.push_back(p);
free(s);
backend_call(design, f, filename, args);
}
void Backend::backend_call(RTLIL::Design *design, std::ostream *f, std::string filename, std::vector<std::string> args)
{
if (args.size() == 0)
return;
if (backend_register.count(args[0]) == 0)
log_cmd_error("No such backend: %s\n", args[0]);
size_t orig_sel_stack_pos = design->selection_stack.size();
if (f != NULL) {
auto state = backend_register[args[0]]->pre_execute();
backend_register[args[0]]->execute(f, filename, args, design);
backend_register[args[0]]->post_execute(state);
} else if (filename == "-") {
std::ostream *f_cout = &std::cout;
auto state = backend_register[args[0]]->pre_execute();
backend_register[args[0]]->execute(f_cout, "<stdout>", args, design);
backend_register[args[0]]->post_execute(state);
} else {
if (!filename.empty())
args.push_back(filename);
backend_register[args[0]]->execute(args, design);
}
while (design->selection_stack.size() > orig_sel_stack_pos)
design->pop_selection();
}
struct SimHelper {
string name;
inline string filesafe_name() {
if (name.at(0) == '$')
if (name.at(1) == '_')
return "gate" + name.substr(1);
else
return "word_" + name.substr(1);
else
return name;
}
string title;
string ports;
string source;
string desc;
string code;
string group;
string ver;
string tags;
};
static bool is_code_getter(string name) {
return *(--(name.end())) == '+';
}
static string get_cell_name(string name) {
return is_code_getter(name) ? name.substr(0, name.length()-1) : name;
}
static void log_warning_flags(Pass *pass) {
bool has_warnings = false;
const string name = pass->pass_name;
if (pass->experimental_flag) {
if (!has_warnings) log("\n");
has_warnings = true;
log("WARNING: THE '%s' COMMAND IS EXPERIMENTAL.\n", name);
}
if (pass->internal_flag) {
if (!has_warnings) log("\n");
has_warnings = true;
log("WARNING: THE '%s' COMMAND IS INTENDED FOR INTERNAL DEVELOPER USE ONLY.\n", name);
}
if (has_warnings)
log("\n");
}
static struct CellHelpMessages {
dict<string, SimHelper> cell_help;
CellHelpMessages() {
#include "techlibs/common/simlib_help.inc"
#include "techlibs/common/simcells_help.inc"
cell_help.sort();
}
bool contains(string name) { return cell_help.count(get_cell_name(name)) > 0; }
SimHelper get(string name) { return cell_help[get_cell_name(name)]; }
} cell_help_messages;
struct HelpPass : public Pass {
HelpPass() : Pass("help", "display help messages") { }
void help() override
{
log("\n");
log(" help ................ list all commands\n");
log(" help <command> ...... print help message for given command\n");
log(" help -all ........... print complete command reference\n");
log("\n");
log(" help -cells .......... list all cell types\n");
log(" help <celltype> ..... print help message for given cell type\n");
log(" help <celltype>+ .... print verilog code for given cell type\n");
log("\n");
}
bool dump_cmds_json(PrettyJson &json) {
// init json
json.begin_object();
json.entry("version", "Yosys command reference");
json.entry("generator", yosys_version_str);
bool raise_error = false;
std::map<string, vector<string>> groups;
json.name("cmds"); json.begin_object();
// iterate over commands
for (auto &it : pass_register) {
auto name = it.first;
auto pass = it.second;
auto title = pass->short_help;
auto cmd_help = PrettyHelp();
auto has_pretty_help = pass->formatted_help();
if (!has_pretty_help) {
enum PassUsageState {
PUState_none,
PUState_signature,
PUState_options,
PUState_optionbody,
};
source_location null_source;
string current_buffer = "";
auto root_listing = cmd_help.get_root();
auto current_listing = root_listing;
// dump command help
std::ostringstream buf;
log_streams.push_back(&buf);
pass->help();
log_streams.pop_back();
std::stringstream ss;
ss << buf.str();
// parse command help
size_t def_strip_count = 0;
auto current_state = PUState_none;
auto catch_verific = false;
auto blank_lines = 2;
for (string line; std::getline(ss, line, '\n');) {
// find position of first non space character
std::size_t first_pos = line.find_first_not_of(" \t");
std::size_t last_pos = line.find_last_not_of(" \t");
if (first_pos == std::string::npos) {
switch (current_state)
{
case PUState_signature:
root_listing->usage(current_buffer, null_source);
current_listing = root_listing;
current_state = PUState_none;
current_buffer = "";
break;
case PUState_none:
case PUState_optionbody:
blank_lines += 1;
break;
default:
break;
}
// skip empty lines
continue;
}
// strip leading and trailing whitespace
std::string stripped_line = line.substr(first_pos, last_pos - first_pos +1);
bool IsDefinition = stripped_line[0] == '-';
IsDefinition &= stripped_line[1] != ' ' && stripped_line[1] != '>';
bool IsDedent = def_strip_count && first_pos < def_strip_count;
bool IsIndent = def_strip_count < first_pos;
// line looks like a signature
bool IsSignature = stripped_line.find(name) == 0 && (stripped_line.length() == name.length() || stripped_line.at(name.size()) == ' ');
if (IsSignature && first_pos <= 4 && (blank_lines >= 2 || current_state == PUState_signature)) {
if (current_state == PUState_options || current_state == PUState_optionbody) {
current_listing->codeblock(current_buffer, "none", null_source);
current_buffer = "";
} else if (current_state == PUState_signature) {
root_listing->usage(current_buffer, null_source);
current_buffer = "";
} else if (current_state == PUState_none && !current_buffer.empty()) {
current_listing->codeblock(current_buffer, "none", null_source);
current_buffer = "";
}
current_listing = root_listing;
current_state = PUState_signature;
def_strip_count = first_pos;
catch_verific = false;
} else if (IsDedent) {
def_strip_count = first_pos;
if (current_state == PUState_optionbody) {
if (!current_buffer.empty()) {
current_listing->codeblock(current_buffer, "none", null_source);
current_buffer = "";
}
if (IsIndent) {
current_state = PUState_options;
current_listing = root_listing->back();
} else {
current_state = PUState_none;
current_listing = root_listing;
}
} else {
current_state = PUState_none;
}
}
if (IsDefinition && !catch_verific && current_state != PUState_signature) {
if (!current_buffer.empty()) {
current_listing->codeblock(current_buffer, "none", null_source);
current_buffer = "";
}
current_state = PUState_options;
current_listing = root_listing->open_option(stripped_line, null_source);
def_strip_count = first_pos;
} else {
if (current_state == PUState_options) {
current_state = PUState_optionbody;
}
if (current_buffer.empty())
current_buffer = stripped_line;
else if (current_state == PUState_signature && IsIndent)
current_buffer += stripped_line;
else if (current_state == PUState_none) {
current_buffer += (blank_lines > 0 ? "\n\n" : "\n") + line;
} else
current_buffer += (blank_lines > 0 ? "\n\n" : "\n") + stripped_line;
if (stripped_line.compare("Command file parser supports following commands in file:") == 0)
catch_verific = true;
}
blank_lines = 0;
}
if (!current_buffer.empty()) {
if (current_buffer.size() > 64 && current_buffer.substr(0, 64).compare("The following commands are executed by this synthesis command:\n\n") == 0) {
current_listing->paragraph(current_buffer.substr(0, 62), null_source);
current_listing->codeblock(current_buffer.substr(64), "yoscrypt", null_source);
} else
current_listing->codeblock(current_buffer, "none", null_source);
current_buffer = "";
}
}
// attempt auto group
if (!cmd_help.has_group()) {
string source_file = pass->location.file_name();
bool has_source = source_file.compare("unknown") != 0;
if (pass->internal_flag)
cmd_help.group = "internal";
else if (source_file.find("backends/") == 0 || (!has_source && name.find("read_") == 0))
cmd_help.group = "backends";
else if (source_file.find("frontends/") == 0 || (!has_source && name.find("write_") == 0))
cmd_help.group = "frontends";
else if (has_source) {
auto last_slash = source_file.find_last_of('/');
if (last_slash != string::npos) {
auto parent_path = source_file.substr(0, last_slash);
cmd_help.group = parent_path;
}
}
// implicit !has_source
else if (name.find("equiv") == 0)
cmd_help.group = "passes/equiv";
else if (name.find("fsm") == 0)
cmd_help.group = "passes/fsm";
else if (name.find("memory") == 0)
cmd_help.group = "passes/memory";
else if (name.find("opt") == 0)
cmd_help.group = "passes/opt";
else if (name.find("proc") == 0)
cmd_help.group = "passes/proc";
}
if (groups.count(cmd_help.group) == 0) {
groups[cmd_help.group] = vector<string>();
}
groups[cmd_help.group].push_back(name);
// write to json
json.name(name.c_str()); json.begin_object();
json.entry("title", title);
json.name("content"); json.begin_array();
for (auto &content : cmd_help)
json.value(content.to_json());
json.end_array();
json.entry("group", cmd_help.group);
json.entry("source_file", pass->location.file_name());
json.entry("source_line", pass->location.line());
json.entry("source_func", pass->location.function_name());
json.entry("experimental_flag", pass->experimental_flag);
json.entry("internal_flag", pass->internal_flag);
json.end_object();
}
json.end_object();
json.entry("groups", groups);
json.end_object();
return raise_error;
}
bool dump_cells_json(PrettyJson &json) {
// init json
json.begin_object();
json.entry("version", "Yosys internal cells");
json.entry("generator", yosys_maybe_version());
dict<string, vector<string>> groups;
dict<string, pair<SimHelper, CellType>> cells;
// iterate over cells
bool raise_error = false;
for (auto &it : yosys_celltypes.cell_types) {
auto name = it.first.str();
if (cell_help_messages.contains(name)) {
auto cell_help = cell_help_messages.get(name);
groups[cell_help.group].emplace_back(name);
auto cell_pair = pair<SimHelper, CellType>(cell_help, it.second);
cells.emplace(name, cell_pair);
} else {
log("ERROR: Missing cell help for cell '%s'.\n", name);
raise_error |= true;
}
}
for (auto &it : cell_help_messages.cell_help) {
if (cells.count(it.first) == 0) {
log_warning("Found cell model '%s' without matching cell type.\n", it.first);
}
}
// write to json
json.name("groups"); json.begin_object();
groups.sort();
for (auto &it : groups) {
json.name(it.first.c_str()); json.value(it.second);
}
json.end_object();
json.name("cells"); json.begin_object();
cells.sort();
for (auto &it : cells) {
auto ch = it.second.first;
auto ct = it.second.second;
json.name(ch.name.c_str()); json.begin_object();
json.name("title"); json.value(ch.title);
json.name("ports"); json.value(ch.ports);
json.name("source"); json.value(ch.source);
json.name("desc"); json.value(ch.desc);
json.name("code"); json.value(ch.code);
vector<string> inputs, outputs;
for (auto &input : ct.inputs)
inputs.push_back(input.str());
json.name("inputs"); json.value(inputs);
for (auto &output : ct.outputs)
outputs.push_back(output.str());
json.name("outputs"); json.value(outputs);
vector<string> properties;
// CellType properties
if (ct.is_evaluable) properties.push_back("is_evaluable");
if (ct.is_combinatorial) properties.push_back("is_combinatorial");
if (ct.is_synthesizable) properties.push_back("is_synthesizable");
// SimHelper properties
size_t last = 0; size_t next = 0;
while ((next = ch.tags.find(", ", last)) != string::npos) {
properties.push_back(ch.tags.substr(last, next-last));
last = next + 2;
}
auto final_tag = ch.tags.substr(last);
if (final_tag.size()) properties.push_back(final_tag);
json.name("properties"); json.value(properties);
json.end_object();
}
json.end_object();
json.end_object();
return raise_error;
}
void execute(std::vector<std::string> args, RTLIL::Design*) override
{
if (args.size() == 1) {
log("\n");
for (auto &it : pass_register)
log(" %-20s %s\n", it.first, it.second->short_help);
log("\n");
log("Type 'help <command>' for more information on a command.\n");
log("Type 'help -cells' for a list of all cell types.\n");
log("\n");
return;
}
if (args.size() == 2) {
if (args[1] == "-all") {
for (auto &it : pass_register) {
log("\n\n");
log("%s -- %s\n", it.first, it.second->short_help);
for (size_t i = 0; i < it.first.size() + it.second->short_help.size() + 6; i++)
log("=");
log("\n");
it.second->help();
log_warning_flags(it.second);
}
}
else if (args[1] == "-cells") {
log("\n");
for (auto &it : cell_help_messages.cell_help) {
SimHelper help_cell = it.second;
log(" %-15s %s\n", help_cell.name, help_cell.ports);
}
log("\n");
log("Type 'help <cell_type>' for more information on a cell type.\n");
log("\n");
return;
}
else if (pass_register.count(args[1])) {
pass_register.at(args[1])->help();
log_warning_flags(pass_register.at(args[1]));
}
else if (cell_help_messages.contains(args[1])) {
auto help_cell = cell_help_messages.get(args[1]);
if (is_code_getter(args[1])) {
log("\n");
log("%s\n", help_cell.code);
} else {
log("\n %s %s\n\n", help_cell.name, help_cell.ports);
if (help_cell.ver == "2" || help_cell.ver == "2a") {
if (help_cell.title != "") log("%s:\n", help_cell.title);
std::stringstream ss;
ss << help_cell.desc;
for (std::string line; std::getline(ss, line, '\n');) {
if (line != "::") log("%s\n", line);
}
} else if (help_cell.desc.length()) {
log("%s\n", help_cell.desc);
} else {
log("No help message for this cell type found.\n");
}
log("\nRun 'help %s+' to display the Verilog model for this cell type.\n", args[1]);
log("\n");
}
}
else
log("No such command or cell type: %s\n", args[1]);
return;
} else if (args.size() == 3) {
// this option is undocumented as it is for internal use only
if (args[1] == "-dump-cmds-json") {
PrettyJson json;
if (!json.write_to_file(args[2]))
log_error("Can't open file `%s' for writing: %s\n", args[2], strerror(errno));
if (dump_cmds_json(json)) {
log_abort();
}
}
// this option is undocumented as it is for internal use only
else if (args[1] == "-dump-cells-json") {
PrettyJson json;
if (!json.write_to_file(args[2]))
log_error("Can't open file `%s' for writing: %s\n", args[2], strerror(errno));
if (dump_cells_json(json)) {
log_error("One or more cells defined in celltypes.h are missing help documentation.\n");
}
}
else
log("Unknown help command: `%s %s'\n", args[1], args[2]);
return;
}
help();
}
} HelpPass;
struct EchoPass : public Pass {
EchoPass() : Pass("echo", "turning echoing back of commands on and off") { }
void help() override
{
log("\n");
log(" echo on\n");
log("\n");
log("Print all commands to log before executing them.\n");
log("\n");
log("\n");
log(" echo off\n");
log("\n");
log("Do not print all commands to log before executing them. (default)\n");
log("\n");
}
void execute(std::vector<std::string> args, RTLIL::Design*) override
{
if (args.size() > 2)
cmd_error(args, 2, "Unexpected argument.");
if (args.size() == 2) {
if (args[1] == "on")
echo_mode = true;
else if (args[1] == "off")
echo_mode = false;
else
cmd_error(args, 1, "Unexpected argument.");
}
log("echo %s\n", echo_mode ? "on" : "off");
}
} EchoPass;
SatSolver *yosys_satsolver_list;
SatSolver *yosys_satsolver;
struct MinisatSatSolver : public SatSolver {
MinisatSatSolver() : SatSolver("minisat") {
yosys_satsolver = this;
}
ezSAT *create() override {
return new ezMiniSAT();
}
} MinisatSatSolver;
struct LicensePass : public Pass {
LicensePass() : Pass("license", "print license terms") { }
void help() override
{
log("\n");
log(" license\n");
log("\n");
log("This command produces the following notice.\n");
notice();
}
void execute(std::vector<std::string>, RTLIL::Design*) override
{
notice();
}
void notice()
{
log("\n");
log(" /----------------------------------------------------------------------------\\\n");
log(" | |\n");
log(" | yosys -- Yosys Open SYnthesis Suite |\n");
log(" | |\n");
log(" | Copyright (C) 2012 - 2025 Claire Xenia Wolf <claire@yosyshq.com> |\n");
log(" | |\n");
log(" | Permission to use, copy, modify, and/or distribute this software for any |\n");
log(" | purpose with or without fee is hereby granted, provided that the above |\n");
log(" | copyright notice and this permission notice appear in all copies. |\n");
log(" | |\n");
log(" | THE SOFTWARE IS PROVIDED \"AS IS\" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |\n");
log(" | WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |\n");
log(" | MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |\n");
log(" | ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |\n");
log(" | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |\n");
log(" | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |\n");
log(" | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |\n");
log(" | |\n");
log(" \\----------------------------------------------------------------------------/\n");
log("\n");
}
} LicensePass;
YOSYS_NAMESPACE_END
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