kernel/driver.cc

   1 /*
   2  *  yosys -- Yosys Open SYnthesis Suite
   3  *
   4  *  Copyright (C) 2012  Clifford Wolf <clifford@clifford.at>
   5  *
   6  *  Permission to use, copy, modify, and/or distribute this software for any
   7  *  purpose with or without fee is hereby granted, provided that the above
   8  *  copyright notice and this permission notice appear in all copies.
   9  *
  10  *  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  11  *  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  12  *  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  13  *  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  14  *  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  15  *  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  16  *  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  17  *
  18  */
  19
  20 #include "kernel/yosys.h"
  21 #include "libs/sha1/sha1.h"
  22
  23 #ifdef YOSYS_ENABLE_READLINE
  24 #  include <readline/readline.h>
  25 #  include <readline/history.h>
  26 #endif
  27
  28 #ifdef YOSYS_ENABLE_EDITLINE
  29 #  include <editline/readline.h>
  30 #endif
  31
  32 #include <stdio.h>
  33 #include <string.h>
  34 #include <limits.h>
  35 #include <errno.h>
  36
  37 #if defined (__linux__) || defined(__FreeBSD__)
  38 #  include <sys/resource.h>
  39 #  include <sys/types.h>
  40 #  include <unistd.h>
  41 #endif
  42
  43 #ifdef __FreeBSD__
  44 #  include <sys/sysctl.h>
  45 #  include <sys/user.h>
  46 #endif
  47
  48 #if !defined(_WIN32) || defined(__MINGW32__)
  49 #  include <unistd.h>
  50 #else
  51 char *optarg;
  52 int optind = 1, optcur = 1;
  53 int getopt(int argc, char **argv, const char *optstring)
  54 {
  55         if (optind >= argc || argv[optind][0] != '-')
  56                 return -1;
  57
  58         bool takes_arg = false;
  59         int opt = argv[optind][optcur];
  60         for (int i = 0; optstring[i]; i++)
  61                 if (opt == optstring[i] && optstring[i + 1] == ':')
  62                         takes_arg = true;
  63
  64         if (!takes_arg) {
  65                 if (argv[optind][++optcur] == 0)
  66                         optind++, optcur = 1;
  67                 return opt;
  68         }
  69
  70         if (argv[optind][++optcur]) {
  71                 optarg = argv[optind++] + optcur;
  72                 optcur = 1;
  73                 return opt;
  74         }
  75
  76         optarg = argv[++optind];
  77         optind++, optcur = 1;
  78         return opt;
  79 }
  80 #endif
  81
  82
  83 USING_YOSYS_NAMESPACE
  84
  85 #ifdef EMSCRIPTEN
  86 #  include <sys/stat.h>
  87 #  include <sys/types.h>
  88 #  include <emscripten.h>
  89
  90 extern "C" int main(int, char**);
  91 extern "C" void run(const char*);
  92 extern "C" const char *errmsg();
  93 extern "C" const char *prompt();
  94
  95 int main(int argc, char **argv)
  96 {
  97         EM_ASM(
  98                 if (ENVIRONMENT_IS_NODE)
  99                 {
 100                         FS.mkdir('/hostcwd');
 101                         FS.mount(NODEFS, { root: '.' }, '/hostcwd');
 102                         FS.mkdir('/hostfs');
 103                         FS.mount(NODEFS, { root: '/' }, '/hostfs');
 104                 }
 105         );
 106
 107         mkdir("/work", 0777);
 108         chdir("/work");
 109         log_files.push_back(stdout);
 110         log_error_stderr = true;
 111         yosys_banner();
 112         yosys_setup();
 113 #ifdef WITH_PYTHON
 114         PyRun_SimpleString(("sys.path.append(\""+proc_self_dirname()+"\")").c_str());
 115         PyRun_SimpleString(("sys.path.append(\""+proc_share_dirname()+"plugins\")").c_str());
 116 #endif
 117
 118         if (argc == 2)
 119         {
 120                 // Run the first argument as a script file
 121                 run_frontend(argv[1], "script", 0, 0, 0);
 122         }
 123 }
 124
 125 void run(const char *command)
 126 {
 127         int selSize = GetSize(yosys_get_design()->selection_stack);
 128         try {
 129                 log_last_error = "Internal error (see JavaScript console for details)";
 130                 run_pass(command);
 131                 log_last_error = "";
 132         } catch (...) {
 133                 while (GetSize(yosys_get_design()->selection_stack) > selSize)
 134                         yosys_get_design()->selection_stack.pop_back();
 135                 throw;
 136         }
 137 }
 138
 139 const char *errmsg()
 140 {
 141         return log_last_error.c_str();
 142 }
 143
 144 const char *prompt()
 145 {
 146         const char *p = create_prompt(yosys_get_design(), 0);
 147         while (*p == '\n') p++;
 148         return p;
 149 }
 150
 151 #else /* EMSCRIPTEN */
 152
 153 #if defined(YOSYS_ENABLE_READLINE) || defined(YOSYS_ENABLE_EDITLINE)
 154 int yosys_history_offset = 0;
 155 std::string yosys_history_file;
 156 #endif
 157
 158 void yosys_atexit()
 159 {
 160 #if defined(YOSYS_ENABLE_READLINE) || defined(YOSYS_ENABLE_EDITLINE)
 161         if (!yosys_history_file.empty()) {
 162 #if defined(YOSYS_ENABLE_READLINE)
 163                 if (yosys_history_offset > 0) {
 164                         history_truncate_file(yosys_history_file.c_str(), 100);
 165                         append_history(where_history() - yosys_history_offset, yosys_history_file.c_str());
 166                 } else
 167                         write_history(yosys_history_file.c_str());
 168 #else
 169                 write_history(yosys_history_file.c_str());
 170 #endif
 171         }
 172
 173         clear_history();
 174 #if defined(YOSYS_ENABLE_READLINE)
 175         HIST_ENTRY **hist_list = history_list();
 176         if (hist_list != NULL)
 177                 free(hist_list);
 178 #endif
 179 #endif
 180 }
 181
 182 int main(int argc, char **argv)
 183 {
 184         std::string frontend_command = "auto";
 185         std::string backend_command = "auto";
 186         std::vector<std::string> vlog_defines;
 187         std::vector<std::string> passes_commands;
 188         std::vector<std::string> plugin_filenames;
 189         std::string output_filename = "";
 190         std::string scriptfile = "";
 191         std::string depsfile = "";
 192         bool scriptfile_tcl = false;
 193         bool got_output_filename = false;
 194         bool print_banner = true;
 195         bool print_stats = true;
 196         bool call_abort = false;
 197         bool timing_details = false;
 198         bool mode_v = false;
 199         bool mode_q = false;
 200
 201 #if defined(YOSYS_ENABLE_READLINE) || defined(YOSYS_ENABLE_EDITLINE)
 202         if (getenv("HOME") != NULL) {
 203                 yosys_history_file = stringf("%s/.yosys_history", getenv("HOME"));
 204                 read_history(yosys_history_file.c_str());
 205                 yosys_history_offset = where_history();
 206         }
 207 #endif
 208
 209         if (argc == 2 && (!strcmp(argv[1], "-h") || !strcmp(argv[1], "-help") || !strcmp(argv[1], "--help")))
 210         {
 211                 printf("\n");
 212                 printf("Usage: %s [options] [<infile> [..]]\n", argv[0]);
 213                 printf("\n");
 214                 printf("    -Q\n");
 215                 printf("        suppress printing of banner (copyright, disclaimer, version)\n");
 216                 printf("\n");
 217                 printf("    -T\n");
 218                 printf("        suppress printing of footer (log hash, version, timing statistics)\n");
 219                 printf("\n");
 220                 printf("    -q\n");
 221                 printf("        quiet operation. only write warnings and error messages to console\n");
 222                 printf("        use this option twice to also quiet warning messages\n");
 223                 printf("\n");
 224                 printf("    -v <level>\n");
 225                 printf("        print log headers up to level <level> to the console. (this\n");
 226                 printf("        implies -q for everything except the 'End of script.' message.)\n");
 227                 printf("\n");
 228                 printf("    -t\n");
 229                 printf("        annotate all log messages with a time stamp\n");
 230                 printf("\n");
 231                 printf("    -d\n");
 232                 printf("        print more detailed timing stats at exit\n");
 233                 printf("\n");
 234                 printf("    -l logfile\n");
 235                 printf("        write log messages to the specified file\n");
 236                 printf("\n");
 237                 printf("    -L logfile\n");
 238                 printf("        like -l but open log file in line buffered mode\n");
 239                 printf("\n");
 240                 printf("    -o outfile\n");
 241                 printf("        write the design to the specified file on exit\n");
 242                 printf("\n");
 243                 printf("    -b backend\n");
 244                 printf("        use this backend for the output file specified on the command line\n");
 245                 printf("\n");
 246                 printf("    -f frontend\n");
 247                 printf("        use the specified frontend for the input files on the command line\n");
 248                 printf("\n");
 249                 printf("    -H\n");
 250                 printf("        print the command list\n");
 251                 printf("\n");
 252                 printf("    -h command\n");
 253                 printf("        print the help message for the specified command\n");
 254                 printf("\n");
 255                 printf("    -s scriptfile\n");
 256                 printf("        execute the commands in the script file\n");
 257                 printf("\n");
 258                 printf("    -c tcl_scriptfile\n");
 259                 printf("        execute the commands in the tcl script file (see 'help tcl' for details)\n");
 260                 printf("\n");
 261                 printf("    -p command\n");
 262                 printf("        execute the commands\n");
 263                 printf("\n");
 264                 printf("    -m module_file\n");
 265                 printf("        load the specified module (aka plugin)\n");
 266                 printf("\n");
 267                 printf("    -X\n");
 268                 printf("        enable tracing of core data structure changes. for debugging\n");
 269                 printf("\n");
 270                 printf("    -M\n");
 271                 printf("        will slightly randomize allocated pointer addresses. for debugging\n");
 272                 printf("\n");
 273                 printf("    -A\n");
 274                 printf("        will call abort() at the end of the script. for debugging\n");
 275                 printf("\n");
 276                 printf("    -D <macro>[=<value>]\n");
 277                 printf("        set the specified Verilog define (via \"read -define\")\n");
 278                 printf("\n");
 279                 printf("    -P <header_id>[:<filename>]\n");
 280                 printf("        dump the design when printing the specified log header to a file.\n");
 281                 printf("        yosys_dump_<header_id>.il is used as filename if none is specified.\n");
 282                 printf("        Use 'ALL' as <header_id> to dump at every header.\n");
 283                 printf("\n");
 284                 printf("    -W regex\n");
 285                 printf("        print a warning for all log messages matching the regex.\n");
 286                 printf("\n");
 287                 printf("    -w regex\n");
 288                 printf("        if a warning message matches the regex, it is printed as regular\n");
 289                 printf("        message instead.\n");
 290                 printf("\n");
 291                 printf("    -e regex\n");
 292                 printf("        if a warning message matches the regex, it is printed as error\n");
 293                 printf("        message instead and the tool terminates with a nonzero return code.\n");
 294                 printf("\n");
 295                 printf("    -E <depsfile>\n");
 296                 printf("        write a Makefile dependencies file with in- and output file names\n");
 297                 printf("\n");
 298                 printf("    -g\n");
 299                 printf("        globally enable debug log messages\n");
 300                 printf("\n");
 301                 printf("    -V\n");
 302                 printf("        print version information and exit\n");
 303                 printf("\n");
 304                 printf("The option -S is an shortcut for calling the \"synth\" command, a default\n");
 305                 printf("script for transforming the Verilog input to a gate-level netlist. For example:\n");
 306                 printf("\n");
 307                 printf("    yosys -o output.blif -S input.v\n");
 308                 printf("\n");
 309                 printf("For more complex synthesis jobs it is recommended to use the read_* and write_*\n");
 310                 printf("commands in a script file instead of specifying input and output files on the\n");
 311                 printf("command line.\n");
 312                 printf("\n");
 313                 printf("When no commands, script files or input files are specified on the command\n");
 314                 printf("line, yosys automatically enters the interactive command mode. Use the 'help'\n");
 315                 printf("command to get information on the individual commands.\n");
 316                 printf("\n");
 317                 exit(0);
 318         }
 319
 320         if (argc == 2 && (!strcmp(argv[1], "-V") || !strcmp(argv[1], "-version") || !strcmp(argv[1], "--version")))
 321         {
 322                 printf("%s\n", yosys_version_str);
 323                 exit(0);
 324         }
 325
 326         int opt;
 327         while ((opt = getopt(argc, argv, "MXAQTVSgm:f:Hh:b:o:p:l:L:qv:tds:c:W:w:e:D:P:E:")) != -1)
 328         {
 329                 switch (opt)
 330                 {
 331                 case 'M':
 332                         memhasher_on();
 333                         break;
 334                 case 'X':
 335                         yosys_xtrace++;
 336                         break;
 337                 case 'A':
 338                         call_abort = true;
 339                         break;
 340                 case 'Q':
 341                         print_banner = false;
 342                         break;
 343                 case 'T':
 344                         print_stats = false;
 345                         break;
 346                 case 'V':
 347                         printf("%s\n", yosys_version_str);
 348                         exit(0);
 349                 case 'S':
 350                         passes_commands.push_back("synth");
 351                         break;
 352                 case 'g':
 353                         log_force_debug++;
 354                         break;
 355                 case 'm':
 356                         plugin_filenames.push_back(optarg);
 357                         break;
 358                 case 'f':
 359                         frontend_command = optarg;
 360                         break;
 361                 case 'H':
 362                         passes_commands.push_back("help");
 363                         break;
 364                 case 'h':
 365                         passes_commands.push_back(stringf("help %s", optarg));
 366                         break;
 367                 case 'b':
 368                         backend_command = optarg;
 369                         break;
 370                 case 'p':
 371                         passes_commands.push_back(optarg);
 372                         break;
 373                 case 'o':
 374                         output_filename = optarg;
 375                         got_output_filename = true;
 376                         break;
 377                 case 'l':
 378                 case 'L':
 379                         log_files.push_back(fopen(optarg, "wt"));
 380                         if (log_files.back() == NULL) {
 381                                 fprintf(stderr, "Can't open log file `%s' for writing!\n", optarg);
 382                                 exit(1);
 383                         }
 384                         if (opt == 'L')
 385                                 setvbuf(log_files.back(), NULL, _IOLBF, 0);
 386                         break;
 387                 case 'q':
 388                         mode_q = true;
 389                         if (log_errfile == stderr)
 390                                 log_quiet_warnings = true;
 391                         log_errfile = stderr;
 392                         break;
 393                 case 'v':
 394                         mode_v = true;
 395                         log_errfile = stderr;
 396                         log_verbose_level = atoi(optarg);
 397                         break;
 398                 case 't':
 399                         log_time = true;
 400                         break;
 401                 case 'd':
 402                         timing_details = true;
 403                         break;
 404                 case 's':
 405                         scriptfile = optarg;
 406                         scriptfile_tcl = false;
 407                         break;
 408                 case 'c':
 409                         scriptfile = optarg;
 410                         scriptfile_tcl = true;
 411                         break;
 412                 case 'W':
 413                         log_warn_regexes.push_back(std::regex(optarg,
 414                                         std::regex_constants::nosubs |
 415                                         std::regex_constants::optimize |
 416                                         std::regex_constants::egrep));
 417                         break;
 418                 case 'w':
 419                         log_nowarn_regexes.push_back(std::regex(optarg,
 420                                         std::regex_constants::nosubs |
 421                                         std::regex_constants::optimize |
 422                                         std::regex_constants::egrep));
 423                         break;
 424                 case 'e':
 425                         log_werror_regexes.push_back(std::regex(optarg,
 426                                         std::regex_constants::nosubs |
 427                                         std::regex_constants::optimize |
 428                                         std::regex_constants::egrep));
 429                         break;
 430                 case 'D':
 431                         vlog_defines.push_back(optarg);
 432                         break;
 433                 case 'P':
 434                         {
 435                                 auto args = split_tokens(optarg, ":");
 436                                 if (!args.empty() && args[0] == "ALL") {
 437                                         if (GetSize(args) != 1) {
 438                                                 fprintf(stderr, "Invalid number of tokens in -D ALL.\n");
 439                                                 exit(1);
 440                                         }
 441                                         log_hdump_all = true;
 442                                 } else {
 443                                         if (!args.empty() && !args[0].empty() && args[0].back() == '.')
 444                                                 args[0].pop_back();
 445                                         if (GetSize(args) == 1)
 446                                                 args.push_back("yosys_dump_" + args[0] + ".il");
 447                                         if (GetSize(args) != 2) {
 448                                                 fprintf(stderr, "Invalid number of tokens in -D.\n");
 449                                                 exit(1);
 450                                         }
 451                                         log_hdump[args[0]].insert(args[1]);
 452                                 }
 453                         }
 454                         break;
 455                 case 'E':
 456                         depsfile = optarg;
 457                         break;
 458                 default:
 459                         fprintf(stderr, "Run '%s -h' for help.\n", argv[0]);
 460                         exit(1);
 461                 }
 462         }
 463
 464         if (log_errfile == NULL) {
 465                 log_files.push_back(stdout);
 466                 log_error_stderr = true;
 467         }
 468
 469         if (print_banner)
 470                 yosys_banner();
 471
 472         if (print_stats)
 473                 log_hasher = new SHA1;
 474
 475 #if defined(__linux__)
 476         // set stack size to >= 128 MB
 477         {
 478                 struct rlimit rl;
 479                 const rlim_t stack_size = 128L * 1024L * 1024L;
 480                 if (getrlimit(RLIMIT_STACK, &rl) == 0 && rl.rlim_cur < stack_size) {
 481                         rl.rlim_cur = stack_size;
 482                         setrlimit(RLIMIT_STACK, &rl);
 483                 }
 484         }
 485 #endif
 486
 487         yosys_setup();
 488 #ifdef WITH_PYTHON
 489         PyRun_SimpleString(("sys.path.append(\""+proc_self_dirname()+"\")").c_str());
 490         PyRun_SimpleString(("sys.path.append(\""+proc_share_dirname()+"plugins\")").c_str());
 491 #endif
 492         log_error_atexit = yosys_atexit;
 493
 494         for (auto &fn : plugin_filenames)
 495                 load_plugin(fn, {});
 496
 497         if (optind == argc && passes_commands.size() == 0 && scriptfile.empty()) {
 498                 if (!got_output_filename)
 499                         backend_command = "";
 500                 shell(yosys_design);
 501         }
 502
 503         if (!vlog_defines.empty()) {
 504                 std::string vdef_cmd = "read -define";
 505                 for (auto vdef : vlog_defines)
 506                         vdef_cmd += " " + vdef;
 507                 run_pass(vdef_cmd);
 508         }
 509
 510         while (optind < argc)
 511                 run_frontend(argv[optind++], frontend_command, output_filename == "-" ? &backend_command : NULL);
 512
 513         if (!scriptfile.empty()) {
 514                 if (scriptfile_tcl) {
 515 #ifdef YOSYS_ENABLE_TCL
 516                         if (Tcl_EvalFile(yosys_get_tcl_interp(), scriptfile.c_str()) != TCL_OK)
 517                                 log_error("TCL interpreter returned an error: %s\n", Tcl_GetStringResult(yosys_get_tcl_interp()));
 518 #else
 519                         log_error("Can't exectue TCL script: this version of yosys is not built with TCL support enabled.\n");
 520 #endif
 521                 } else
 522                         run_frontend(scriptfile, "script", output_filename == "-" ? &backend_command : NULL);
 523         }
 524
 525         for (auto it = passes_commands.begin(); it != passes_commands.end(); it++)
 526                 run_pass(*it);
 527
 528         if (!backend_command.empty())
 529                 run_backend(output_filename, backend_command);
 530
 531         yosys_design->check();
 532         for (auto it : saved_designs)
 533                 it.second->check();
 534         for (auto it : pushed_designs)
 535                 it->check();
 536
 537         if (!depsfile.empty())
 538         {
 539                 FILE *f = fopen(depsfile.c_str(), "wt");
 540                 if (f == nullptr)
 541                         log_error("Can't open dependencies file for writing: %s\n", strerror(errno));
 542                 bool first = true;
 543                 for (auto fn : yosys_output_files) {
 544                         fprintf(f, "%s%s", first ? "" : " ", escape_filename_spaces(fn).c_str());
 545                         first = false;
 546                 }
 547                 fprintf(f, ":");
 548                 for (auto fn : yosys_input_files) {
 549                         if (yosys_output_files.count(fn) == 0)
 550                                 fprintf(f, " %s", escape_filename_spaces(fn).c_str());
 551                 }
 552                 fprintf(f, "\n");
 553         }
 554
 555         if (print_stats)
 556         {
 557                 std::string hash = log_hasher->final().substr(0, 10);
 558                 delete log_hasher;
 559                 log_hasher = nullptr;
 560
 561                 log_time = false;
 562                 yosys_xtrace = 0;
 563                 log_spacer();
 564
 565                 if (mode_v && !mode_q)
 566                         log_files.push_back(stderr);
 567
 568                 if (log_warnings_count)
 569                         log("Warnings: %d unique messages, %d total\n", GetSize(log_warnings), log_warnings_count);
 570 #ifdef _WIN32
 571                 log("End of script. Logfile hash: %s\n", hash.c_str());
 572 #else
 573                 std::string meminfo;
 574                 std::string stats_divider = ", ";
 575
 576                 struct rusage ru_buffer;
 577                 getrusage(RUSAGE_SELF, &ru_buffer);
 578                 if (yosys_design->scratchpad_get_bool("print_stats.include_children")) {
 579                         struct rusage ru_buffer_children;
 580                         getrusage(RUSAGE_CHILDREN, &ru_buffer_children);
 581                         ru_buffer.ru_utime.tv_sec += ru_buffer_children.ru_utime.tv_sec;
 582                         ru_buffer.ru_utime.tv_usec += ru_buffer_children.ru_utime.tv_usec;
 583                         ru_buffer.ru_stime.tv_sec += ru_buffer_children.ru_stime.tv_sec;
 584                         ru_buffer.ru_stime.tv_usec += ru_buffer_children.ru_stime.tv_usec;
 585                         ru_buffer.ru_maxrss = std::max(ru_buffer.ru_maxrss, ru_buffer_children.ru_maxrss);
 586                 }
 587 #  if defined(__linux__) || defined(__FreeBSD__)
 588                 meminfo = stringf(", MEM: %.2f MB peak",
 589                                 ru_buffer.ru_maxrss / 1024.0);
 590 #endif
 591                 log("End of script. Logfile hash: %s%sCPU: user %.2fs system %.2fs%s\n", hash.c_str(),
 592                                 stats_divider.c_str(), ru_buffer.ru_utime.tv_sec + 1e-6 * ru_buffer.ru_utime.tv_usec,
 593                                 ru_buffer.ru_stime.tv_sec + 1e-6 * ru_buffer.ru_stime.tv_usec, meminfo.c_str());
 594 #endif
 595                 log("%s\n", yosys_version_str);
 596
 597                 int64_t total_ns = 0;
 598                 std::set<tuple<int64_t, int, std::string>> timedat;
 599
 600                 for (auto &it : pass_register)
 601                         if (it.second->call_counter) {
 602                                 total_ns += it.second->runtime_ns + 1;
 603                                 timedat.insert(make_tuple(it.second->runtime_ns + 1, it.second->call_counter, it.first));
 604                         }
 605
 606                 if (timing_details)
 607                 {
 608                         log("Time spent:\n");
 609                         for (auto it = timedat.rbegin(); it != timedat.rend(); it++) {
 610                                 log("%5d%% %5d calls %8.3f sec %s\n", int(100*std::get<0>(*it) / total_ns),
 611                                                 std::get<1>(*it), std::get<0>(*it) / 1000000000.0, std::get<2>(*it).c_str());
 612                         }
 613                 }
 614                 else
 615                 {
 616                         int out_count = 0;
 617                         log("Time spent:");
 618                         for (auto it = timedat.rbegin(); it != timedat.rend() && out_count < 4; it++, out_count++) {
 619                                 if (out_count >= 2 && (std::get<0>(*it) < 1000000000 || int(100*std::get<0>(*it) / total_ns) < 20)) {
 620                                         log(", ...");
 621                                         break;
 622                                 }
 623                                 log("%s %d%% %dx %s (%d sec)", out_count ? "," : "", int(100*std::get<0>(*it) / total_ns),
 624                                                 std::get<1>(*it), std::get<2>(*it).c_str(), int(std::get<0>(*it) / 1000000000));
 625                         }
 626                         log("%s\n", out_count ? "" : " no commands executed");
 627                 }
 628         }
 629
 630 #if defined(YOSYS_ENABLE_COVER) && (defined(__linux__) || defined(__FreeBSD__))
 631         if (getenv("YOSYS_COVER_DIR") || getenv("YOSYS_COVER_FILE"))
 632         {
 633                 string filename;
 634                 FILE *f;
 635
 636                 if (getenv("YOSYS_COVER_DIR")) {
 637                         filename = stringf("%s/yosys_cover_%d_XXXXXX.txt", getenv("YOSYS_COVER_DIR"), getpid());
 638                         filename = make_temp_file(filename);
 639                 } else {
 640                         filename = getenv("YOSYS_COVER_FILE");
 641                 }
 642
 643                 f = fopen(filename.c_str(), "a+");
 644
 645                 if (f == NULL)
 646                         log_error("Can't create coverage file `%s'.\n", filename.c_str());
 647
 648                 log("<writing coverage file \"%s\">\n", filename.c_str());
 649
 650                 for (auto &it : get_coverage_data())
 651                         fprintf(f, "%-60s %10d %s\n", it.second.first.c_str(), it.second.second, it.first.c_str());
 652
 653                 fclose(f);
 654         }
 655 #endif
 656
 657         yosys_atexit();
 658
 659         memhasher_off();
 660         if (call_abort)
 661                 abort();
 662
 663         log_flush();
 664 #if defined(_MSC_VER)
 665         _exit(0);
 666 #elif defined(_WIN32)
 667         _Exit(0);
 668 #endif
 669
 670         yosys_shutdown();
 671
 672         return 0;
 673 }
 674
 675 #endif /* EMSCRIPTEN */
 676