kernel/yosys.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 "kernel/celltypes.h"
  22
  23 #ifdef YOSYS_ENABLE_READLINE
  24 #  include <readline/readline.h>
  25 #  include <readline/history.h>
  26 #endif
  27
  28 #ifdef YOSYS_ENABLE_PLUGINS
  29 #  include <dlfcn.h>
  30 #endif
  31
  32 #ifdef _WIN32
  33 #  include <windows.h>
  34 #  include <io.h>
  35 #elif defined(__APPLE__)
  36 #  include <mach-o/dyld.h>
  37 #  include <unistd.h>
  38 #  include <dirent.h>
  39 #  include <sys/stat.h>
  40 #else
  41 #  include <unistd.h>
  42 #  include <dirent.h>
  43 #  include <sys/types.h>
  44 #  include <sys/stat.h>
  45 #endif
  46
  47 #include <limits.h>
  48 #include <errno.h>
  49
  50 YOSYS_NAMESPACE_BEGIN
  51
  52 int autoidx = 1;
  53 int yosys_xtrace = 0;
  54 RTLIL::Design *yosys_design = NULL;
  55 CellTypes yosys_celltypes;
  56
  57 #ifdef YOSYS_ENABLE_TCL
  58 Tcl_Interp *yosys_tcl_interp = NULL;
  59 #endif
  60
  61 bool memhasher_active = false;
  62 uint32_t memhasher_rng = 123456;
  63 std::vector<void*> memhasher_store;
  64
  65 void memhasher_on()
  66 {
  67 #ifdef __linux__
  68         memhasher_rng += time(NULL) << 16 ^ getpid();
  69 #endif
  70         memhasher_store.resize(0x10000);
  71         memhasher_active = true;
  72 }
  73
  74 void memhasher_off()
  75 {
  76         for (auto p : memhasher_store)
  77                 if (p) free(p);
  78         memhasher_store.clear();
  79         memhasher_active = false;
  80 }
  81
  82 void memhasher_do()
  83 {
  84         memhasher_rng ^= memhasher_rng << 13;
  85         memhasher_rng ^= memhasher_rng >> 17;
  86         memhasher_rng ^= memhasher_rng << 5;
  87
  88         int size, index = (memhasher_rng >> 4) & 0xffff;
  89         switch (memhasher_rng & 7) {
  90                 case 0: size =   16; break;
  91                 case 1: size =  256; break;
  92                 case 2: size = 1024; break;
  93                 case 3: size = 4096; break;
  94                 default: size = 0;
  95         }
  96         if (index < 16) size *= 16;
  97         memhasher_store[index] = realloc(memhasher_store[index], size);
  98 }
  99
 100 void yosys_banner()
 101 {
 102         log("\n");
 103         log(" /----------------------------------------------------------------------------\\\n");
 104         log(" |                                                                            |\n");
 105         log(" |  yosys -- Yosys Open SYnthesis Suite                                       |\n");
 106         log(" |                                                                            |\n");
 107         log(" |  Copyright (C) 2012 - 2015  Clifford Wolf <clifford@clifford.at>           |\n");
 108         log(" |                                                                            |\n");
 109         log(" |  Permission to use, copy, modify, and/or distribute this software for any  |\n");
 110         log(" |  purpose with or without fee is hereby granted, provided that the above    |\n");
 111         log(" |  copyright notice and this permission notice appear in all copies.         |\n");
 112         log(" |                                                                            |\n");
 113         log(" |  THE SOFTWARE IS PROVIDED \"AS IS\" AND THE AUTHOR DISCLAIMS ALL WARRANTIES  |\n");
 114         log(" |  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF          |\n");
 115         log(" |  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR   |\n");
 116         log(" |  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES    |\n");
 117         log(" |  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN     |\n");
 118         log(" |  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF   |\n");
 119         log(" |  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.            |\n");
 120         log(" |                                                                            |\n");
 121         log(" \\----------------------------------------------------------------------------/\n");
 122         log("\n");
 123         log(" %s\n", yosys_version_str);
 124         log("\n");
 125 }
 126
 127 std::string stringf(const char *fmt, ...)
 128 {
 129         std::string string;
 130         va_list ap;
 131
 132         va_start(ap, fmt);
 133         string = vstringf(fmt, ap);
 134         va_end(ap);
 135
 136         return string;
 137 }
 138
 139 std::string vstringf(const char *fmt, va_list ap)
 140 {
 141         std::string string;
 142         char *str = NULL;
 143
 144 #ifdef _WIN32
 145         int sz = 64, rc;
 146         while (1) {
 147                 va_list apc;
 148                 va_copy(apc, ap);
 149                 str = (char*)realloc(str, sz);
 150                 rc = vsnprintf(str, sz, fmt, apc);
 151                 va_end(apc);
 152                 if (rc >= 0 && rc < sz)
 153                         break;
 154                 sz *= 2;
 155         }
 156 #else
 157         if (vasprintf(&str, fmt, ap) < 0)
 158                 str = NULL;
 159 #endif
 160
 161         if (str != NULL) {
 162                 string = str;
 163                 free(str);
 164         }
 165
 166         return string;
 167 }
 168
 169 int readsome(std::istream &f, char *s, int n)
 170 {
 171         int rc = f.readsome(s, n);
 172
 173         // f.readsome() sometimes returns 0 on a non-empty stream..
 174         if (rc == 0) {
 175                 int c = f.get();
 176                 if (c != EOF) {
 177                         *s = c;
 178                         rc = 1;
 179                 }
 180         }
 181
 182         return rc;
 183 }
 184
 185 std::string next_token(std::string &text, const char *sep, bool long_strings)
 186 {
 187         size_t pos_begin = text.find_first_not_of(sep);
 188
 189         if (pos_begin == std::string::npos)
 190                 pos_begin = text.size();
 191
 192         if (long_strings && pos_begin != text.size() && text[pos_begin] == '"') {
 193                 string sep_string = sep;
 194                 for (size_t i = pos_begin+1; i < text.size(); i++)
 195                         if (text[i] == '"' && (i+1 == text.size() || sep_string.find(text[i+1]) != std::string::npos)) {
 196                                 std::string token = text.substr(pos_begin, i-pos_begin+1);
 197                                 text = text.substr(i+1);
 198                                 return token;
 199                         }
 200         }
 201
 202         size_t pos_end = text.find_first_of(sep, pos_begin);
 203
 204         if (pos_end == std::string::npos)
 205                 pos_end = text.size();
 206
 207         std::string token = text.substr(pos_begin, pos_end-pos_begin);
 208         text = text.substr(pos_end);
 209         return token;
 210 }
 211
 212 std::vector<std::string> split_tokens(const std::string &text, const char *sep)
 213 {
 214         std::vector<std::string> tokens;
 215         std::string current_token;
 216         for (char c : text) {
 217                 if (strchr(sep, c)) {
 218                         if (!current_token.empty()) {
 219                                 tokens.push_back(current_token);
 220                                 current_token.clear();
 221                         }
 222                 } else
 223                         current_token += c;
 224         }
 225         if (!current_token.empty()) {
 226                 tokens.push_back(current_token);
 227                 current_token.clear();
 228         }
 229         return tokens;
 230 }
 231
 232 // this is very similar to fnmatch(). the exact rules used by this
 233 // function are:
 234 //
 235 //    ?        matches any character except
 236 //    *        matches any sequence of characters
 237 //    [...]    matches any of the characters in the list
 238 //    [!..]    matches any of the characters not in the list
 239 //
 240 // a backslash may be used to escape the next characters in the
 241 // pattern. each special character can also simply match itself.
 242 //
 243 bool patmatch(const char *pattern, const char *string)
 244 {
 245         if (*pattern == 0)
 246                 return *string == 0;
 247
 248         if (*pattern == '\\') {
 249                 if (pattern[1] == string[0] && patmatch(pattern+2, string+1))
 250                         return true;
 251         }
 252
 253         if (*pattern == '?') {
 254                 if (*string == 0)
 255                         return false;
 256                 return patmatch(pattern+1, string+1);
 257         }
 258
 259         if (*pattern == '*') {
 260                 while (*string) {
 261                         if (patmatch(pattern+1, string++))
 262                                 return true;
 263                 }
 264                 return pattern[1] == 0;
 265         }
 266
 267         if (*pattern == '[') {
 268                 bool found_match = false;
 269                 bool inverted_list = pattern[1] == '!';
 270                 const char *p = pattern + (inverted_list ? 1 : 0);
 271
 272                 while (*++p) {
 273                         if (*p == ']') {
 274                                 if (found_match != inverted_list && patmatch(p+1, string+1))
 275                                         return true;
 276                                 break;
 277                         }
 278
 279                         if (*p == '\\') {
 280                                 if (*++p == *string)
 281                                         found_match = true;
 282                         } else
 283                         if (*p == *string)
 284                                 found_match = true;
 285                 }
 286         }
 287
 288         if (*pattern == *string)
 289                 return patmatch(pattern+1, string+1);
 290
 291         return false;
 292 }
 293
 294 int run_command(const std::string &command, std::function<void(const std::string&)> process_line)
 295 {
 296         if (!process_line)
 297                 return system(command.c_str());
 298
 299         FILE *f = popen(command.c_str(), "r");
 300         if (f == nullptr)
 301                 return -1;
 302
 303         std::string line;
 304         char logbuf[128];
 305         while (fgets(logbuf, 128, f) != NULL) {
 306                 line += logbuf;
 307                 if (!line.empty() && line.back() == '\n')
 308                         process_line(line), line.clear();
 309         }
 310         if (!line.empty())
 311                 process_line(line);
 312
 313         int ret = pclose(f);
 314         if (ret < 0)
 315                 return -1;
 316 #ifdef _WIN32
 317         return ret;
 318 #else
 319         return WEXITSTATUS(ret);
 320 #endif
 321 }
 322
 323 std::string make_temp_file(std::string template_str)
 324 {
 325 #ifdef _WIN32
 326         if (template_str.rfind("/tmp/", 0) == 0) {
 327 #  ifdef __MINGW32__
 328                 char longpath[MAX_PATH + 1];
 329                 char shortpath[MAX_PATH + 1];
 330 #  else
 331                 WCHAR longpath[MAX_PATH + 1];
 332                 TCHAR shortpath[MAX_PATH + 1];
 333 #  endif
 334                 if (!GetTempPath(MAX_PATH+1, longpath))
 335                         log_error("GetTempPath() failed.\n");
 336                 if (!GetShortPathName(longpath, shortpath, MAX_PATH + 1))
 337                         log_error("GetShortPathName() failed.\n");
 338                 std::string path;
 339                 for (int i = 0; shortpath[i]; i++)
 340                         path += char(shortpath[i]);
 341                 template_str = stringf("%s\\%s", path.c_str(), template_str.c_str() + 5);
 342         }
 343
 344         size_t pos = template_str.rfind("XXXXXX");
 345         log_assert(pos != std::string::npos);
 346
 347         while (1) {
 348                 for (int i = 0; i < 6; i++) {
 349                         static std::string y = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
 350                         static uint32_t x = 314159265 ^ uint32_t(time(NULL));
 351                         x ^= x << 13, x ^= x >> 17, x ^= x << 5;
 352                         template_str[pos+i] = y[x % y.size()];
 353                 }
 354                 if (_access(template_str.c_str(), 0) != 0)
 355                         break;
 356         }
 357 #else
 358         size_t pos = template_str.rfind("XXXXXX");
 359         log_assert(pos != std::string::npos);
 360
 361         int suffixlen = GetSize(template_str) - pos - 6;
 362
 363         char *p = strdup(template_str.c_str());
 364         close(mkstemps(p, suffixlen));
 365         template_str = p;
 366         free(p);
 367 #endif
 368
 369         return template_str;
 370 }
 371
 372 std::string make_temp_dir(std::string template_str)
 373 {
 374 #ifdef _WIN32
 375         template_str = make_temp_file(template_str);
 376         mkdir(template_str.c_str());
 377         return template_str;
 378 #else
 379 #  ifndef NDEBUG
 380         size_t pos = template_str.rfind("XXXXXX");
 381         log_assert(pos != std::string::npos);
 382
 383         int suffixlen = GetSize(template_str) - pos - 6;
 384         log_assert(suffixlen == 0);
 385 #  endif
 386
 387         char *p = strdup(template_str.c_str());
 388         p = mkdtemp(p);
 389         log_assert(p != NULL);
 390         template_str = p;
 391         free(p);
 392
 393         return template_str;
 394 #endif
 395 }
 396
 397 #ifdef _WIN32
 398 bool check_file_exists(std::string filename, bool)
 399 {
 400         return _access(filename.c_str(), 0) == 0;
 401 }
 402 #else
 403 bool check_file_exists(std::string filename, bool is_exec)
 404 {
 405         return access(filename.c_str(), is_exec ? X_OK : F_OK) == 0;
 406 }
 407 #endif
 408
 409 bool is_absolute_path(std::string filename)
 410 {
 411 #ifdef _WIN32
 412         return filename[0] == '/' || filename[0] == '\\' || (filename[0] != 0 && filename[1] == ':');
 413 #else
 414         return filename[0] == '/';
 415 #endif
 416 }
 417
 418 void remove_directory(std::string dirname)
 419 {
 420 #ifdef _WIN32
 421         run_command(stringf("rmdir /s /q \"%s\"", dirname.c_str()));
 422 #else
 423         struct stat stbuf;
 424         struct dirent **namelist;
 425         int n = scandir(dirname.c_str(), &namelist, nullptr, alphasort);
 426         log_assert(n >= 0);
 427         for (int i = 0; i < n; i++) {
 428                 if (strcmp(namelist[i]->d_name, ".") && strcmp(namelist[i]->d_name, "..")) {
 429                         std::string buffer = stringf("%s/%s", dirname.c_str(), namelist[i]->d_name);
 430                         if (!stat(buffer.c_str(), &stbuf) && S_ISREG(stbuf.st_mode)) {
 431                                 remove(buffer.c_str());
 432                         } else
 433                                 remove_directory(buffer);
 434                 }
 435                 free(namelist[i]);
 436         }
 437         free(namelist);
 438         rmdir(dirname.c_str());
 439 #endif
 440 }
 441
 442 int GetSize(RTLIL::Wire *wire)
 443 {
 444         return wire->width;
 445 }
 446
 447 void yosys_setup()
 448 {
 449         // if there are already IdString objects then we have a global initialization order bug
 450         IdString empty_id;
 451         log_assert(empty_id.index_ == 0);
 452         IdString::get_reference(empty_id.index_);
 453
 454         Pass::init_register();
 455         yosys_design = new RTLIL::Design;
 456         yosys_celltypes.setup();
 457         log_push();
 458 }
 459
 460 void yosys_shutdown()
 461 {
 462         log_pop();
 463
 464         delete yosys_design;
 465         yosys_design = NULL;
 466
 467         for (auto f : log_files)
 468                 if (f != stderr)
 469                         fclose(f);
 470         log_errfile = NULL;
 471         log_files.clear();
 472
 473         Pass::done_register();
 474         yosys_celltypes.clear();
 475
 476 #ifdef YOSYS_ENABLE_TCL
 477         if (yosys_tcl_interp != NULL) {
 478                 Tcl_DeleteInterp(yosys_tcl_interp);
 479                 Tcl_Finalize();
 480                 yosys_tcl_interp = NULL;
 481         }
 482 #endif
 483
 484 #ifdef YOSYS_ENABLE_PLUGINS
 485         for (auto &it : loaded_plugins)
 486                 dlclose(it.second);
 487
 488         loaded_plugins.clear();
 489         loaded_plugin_aliases.clear();
 490 #endif
 491
 492         IdString empty_id;
 493         IdString::put_reference(empty_id.index_);
 494 }
 495
 496 RTLIL::IdString new_id(std::string file, int line, std::string func)
 497 {
 498 #ifdef _WIN32
 499         size_t pos = file.find_last_of("/\\");
 500 #else
 501         size_t pos = file.find_last_of('/');
 502 #endif
 503         if (pos != std::string::npos)
 504                 file = file.substr(pos+1);
 505
 506         pos = func.find_last_of(':');
 507         if (pos != std::string::npos)
 508                 func = func.substr(pos+1);
 509
 510         return stringf("$auto$%s:%d:%s$%d", file.c_str(), line, func.c_str(), autoidx++);
 511 }
 512
 513 RTLIL::Design *yosys_get_design()
 514 {
 515         return yosys_design;
 516 }
 517
 518 const char *create_prompt(RTLIL::Design *design, int recursion_counter)
 519 {
 520         static char buffer[100];
 521         std::string str = "\n";
 522         if (recursion_counter > 1)
 523                 str += stringf("(%d) ", recursion_counter);
 524         str += "yosys";
 525         if (!design->selected_active_module.empty())
 526                 str += stringf(" [%s]", RTLIL::unescape_id(design->selected_active_module).c_str());
 527         if (!design->selection_stack.empty() && !design->selection_stack.back().full_selection) {
 528                 if (design->selected_active_module.empty())
 529                         str += "*";
 530                 else if (design->selection_stack.back().selected_modules.size() != 1 || design->selection_stack.back().selected_members.size() != 0 ||
 531                                 design->selection_stack.back().selected_modules.count(design->selected_active_module) == 0)
 532                         str += "*";
 533         }
 534         snprintf(buffer, 100, "%s> ", str.c_str());
 535         return buffer;
 536 }
 537
 538 void rewrite_filename(std::string &filename)
 539 {
 540         if (filename.substr(0, 1) == "\"" && filename.substr(GetSize(filename)-1) == "\"")
 541                 filename = filename.substr(1, GetSize(filename)-2);
 542         if (filename.substr(0, 2) == "+/")
 543                 filename = proc_share_dirname() + filename.substr(2);
 544 }
 545
 546 #ifdef YOSYS_ENABLE_TCL
 547 static int tcl_yosys_cmd(ClientData, Tcl_Interp *interp, int argc, const char *argv[])
 548 {
 549         std::vector<std::string> args;
 550         for (int i = 1; i < argc; i++)
 551                 args.push_back(argv[i]);
 552
 553         if (args.size() >= 1 && args[0] == "-import") {
 554                 for (auto &it : pass_register) {
 555                         std::string tcl_command_name = it.first;
 556                         if (tcl_command_name == "proc")
 557                                 tcl_command_name = "procs";
 558                         Tcl_CmdInfo info;
 559                         if (Tcl_GetCommandInfo(interp, tcl_command_name.c_str(), &info) != 0) {
 560                                 log("[TCL: yosys -import] Command name collision: found pre-existing command `%s' -> skip.\n", it.first.c_str());
 561                         } else {
 562                                 std::string tcl_script = stringf("proc %s args { yosys %s {*}$args }", tcl_command_name.c_str(), it.first.c_str());
 563                                 Tcl_Eval(interp, tcl_script.c_str());
 564                         }
 565                 }
 566                 return TCL_OK;
 567         }
 568
 569         if (args.size() == 1) {
 570                 Pass::call(yosys_get_design(), args[0]);
 571                 return TCL_OK;
 572         }
 573
 574         Pass::call(yosys_get_design(), args);
 575         return TCL_OK;
 576 }
 577
 578 extern Tcl_Interp *yosys_get_tcl_interp()
 579 {
 580         if (yosys_tcl_interp == NULL) {
 581                 yosys_tcl_interp = Tcl_CreateInterp();
 582                 Tcl_CreateCommand(yosys_tcl_interp, "yosys", tcl_yosys_cmd, NULL, NULL);
 583         }
 584         return yosys_tcl_interp;
 585 }
 586
 587 struct TclPass : public Pass {
 588         TclPass() : Pass("tcl", "execute a TCL script file") { }
 589         virtual void help() {
 590                 log("\n");
 591                 log("    tcl <filename>\n");
 592                 log("\n");
 593                 log("This command executes the tcl commands in the specified file.\n");
 594                 log("Use 'yosys cmd' to run the yosys command 'cmd' from tcl.\n");
 595                 log("\n");
 596                 log("The tcl command 'yosys -import' can be used to import all yosys\n");
 597                 log("commands directly as tcl commands to the tcl shell. The yosys\n");
 598                 log("command 'proc' is wrapped using the tcl command 'procs' in order\n");
 599                 log("to avoid a name collision with the tcl builting command 'proc'.\n");
 600                 log("\n");
 601         }
 602         virtual void execute(std::vector<std::string> args, RTLIL::Design *design) {
 603                 if (args.size() < 2)
 604                         log_cmd_error("Missing script file.\n");
 605                 if (args.size() > 2)
 606                         extra_args(args, 1, design, false);
 607                 if (Tcl_EvalFile(yosys_get_tcl_interp(), args[1].c_str()) != TCL_OK)
 608                         log_cmd_error("TCL interpreter returned an error: %s\n", Tcl_GetStringResult(yosys_get_tcl_interp()));
 609         }
 610 } TclPass;
 611 #endif
 612
 613 #if defined(__linux__)
 614 std::string proc_self_dirname()
 615 {
 616         char path[PATH_MAX];
 617         ssize_t buflen = readlink("/proc/self/exe", path, sizeof(path));
 618         if (buflen < 0) {
 619                 log_error("readlink(\"/proc/self/exe\") failed: %s\n", strerror(errno));
 620         }
 621         while (buflen > 0 && path[buflen-1] != '/')
 622                 buflen--;
 623         return std::string(path, buflen);
 624 }
 625 #elif defined(__APPLE__)
 626 std::string proc_self_dirname()
 627 {
 628         char *path = NULL;
 629         uint32_t buflen = 0;
 630         while (_NSGetExecutablePath(path, &buflen) != 0)
 631                 path = (char *) realloc((void *) path, buflen);
 632         while (buflen > 0 && path[buflen-1] != '/')
 633                 buflen--;
 634         return std::string(path, buflen);
 635 }
 636 #elif defined(_WIN32)
 637 std::string proc_self_dirname()
 638 {
 639         int i = 0;
 640 #  ifdef __MINGW32__
 641         char longpath[MAX_PATH + 1];
 642         char shortpath[MAX_PATH + 1];
 643 #  else
 644         WCHAR longpath[MAX_PATH + 1];
 645         TCHAR shortpath[MAX_PATH + 1];
 646 #  endif
 647         if (!GetModuleFileName(0, longpath, MAX_PATH+1))
 648                 log_error("GetModuleFileName() failed.\n");
 649         if (!GetShortPathName(longpath, shortpath, MAX_PATH+1))
 650                 log_error("GetShortPathName() failed.\n");
 651         while (shortpath[i] != 0)
 652                 i++;
 653         while (i > 0 && shortpath[i-1] != '/' && shortpath[i-1] != '\\')
 654                 shortpath[--i] = 0;
 655         std::string path;
 656         for (i = 0; shortpath[i]; i++)
 657                 path += char(shortpath[i]);
 658         return path;
 659 }
 660 #elif defined(EMSCRIPTEN)
 661 std::string proc_self_dirname()
 662 {
 663         return "/";
 664 }
 665 #else
 666         #error Dont know how to determine process executable base path!
 667 #endif
 668
 669 #ifdef EMSCRIPTEN
 670 std::string proc_share_dirname()
 671 {
 672         return "/share";
 673 }
 674 #else
 675 std::string proc_share_dirname()
 676 {
 677         std::string proc_self_path = proc_self_dirname();
 678 #  ifdef _WIN32
 679         std::string proc_share_path = proc_self_path + "share\\";
 680         if (check_file_exists(proc_share_path, true))
 681                 return proc_share_path;
 682         proc_share_path = proc_self_path + "..\\share\\";
 683         if (check_file_exists(proc_share_path, true))
 684                 return proc_share_path;
 685 #  else
 686         std::string proc_share_path = proc_self_path + "share/";
 687         if (check_file_exists(proc_share_path, true))
 688                 return proc_share_path;
 689         proc_share_path = proc_self_path + "../share/yosys/";
 690         if (check_file_exists(proc_share_path, true))
 691                 return proc_share_path;
 692 #  endif
 693         log_error("proc_share_dirname: unable to determine share/ directory!\n");
 694 }
 695 #endif
 696
 697 bool fgetline(FILE *f, std::string &buffer)
 698 {
 699         buffer = "";
 700         char block[4096];
 701         while (1) {
 702                 if (fgets(block, 4096, f) == NULL)
 703                         return false;
 704                 buffer += block;
 705                 if (buffer.size() > 0 && (buffer[buffer.size()-1] == '\n' ||  buffer[buffer.size()-1] == '\r')) {
 706                         while (buffer.size() > 0 && (buffer[buffer.size()-1] == '\n' ||  buffer[buffer.size()-1] == '\r'))
 707                                 buffer.resize(buffer.size()-1);
 708                         return true;
 709                 }
 710         }
 711 }
 712
 713 static void handle_label(std::string &command, bool &from_to_active, const std::string &run_from, const std::string &run_to)
 714 {
 715         int pos = 0;
 716         std::string label;
 717
 718         while (pos < GetSize(command) && (command[pos] == ' ' || command[pos] == '\t'))
 719                 pos++;
 720
 721         if (pos < GetSize(command) && command[pos] == '#')
 722                 return;
 723
 724         while (pos < GetSize(command) && command[pos] != ' ' && command[pos] != '\t' && command[pos] != '\r' && command[pos] != '\n')
 725                 label += command[pos++];
 726
 727         if (label.back() == ':' && GetSize(label) > 1)
 728         {
 729                 label = label.substr(0, GetSize(label)-1);
 730                 command = command.substr(pos);
 731
 732                 if (label == run_from)
 733                         from_to_active = true;
 734                 else if (label == run_to || (run_from == run_to && !run_from.empty()))
 735                         from_to_active = false;
 736         }
 737 }
 738
 739 void run_frontend(std::string filename, std::string command, std::string *backend_command, std::string *from_to_label, RTLIL::Design *design)
 740 {
 741         if (design == nullptr)
 742                 design = yosys_design;
 743
 744         if (command == "auto") {
 745                 if (filename.size() > 2 && filename.substr(filename.size()-2) == ".v")
 746                         command = "verilog";
 747                 else if (filename.size() > 2 && filename.substr(filename.size()-3) == ".sv")
 748                         command = "verilog -sv";
 749                 else if (filename.size() > 3 && filename.substr(filename.size()-3) == ".il")
 750                         command = "ilang";
 751                 else if (filename.size() > 3 && filename.substr(filename.size()-3) == ".ys")
 752                         command = "script";
 753                 else if (filename == "-")
 754                         command = "script";
 755                 else
 756                         log_error("Can't guess frontend for input file `%s' (missing -f option)!\n", filename.c_str());
 757         }
 758
 759         if (command == "script")
 760         {
 761                 std::string run_from, run_to;
 762                 bool from_to_active = true;
 763
 764                 if (from_to_label != NULL) {
 765                         size_t pos = from_to_label->find(':');
 766                         if (pos == std::string::npos) {
 767                                 run_from = *from_to_label;
 768                                 run_to = *from_to_label;
 769                         } else {
 770                                 run_from = from_to_label->substr(0, pos);
 771                                 run_to = from_to_label->substr(pos+1);
 772                         }
 773                         from_to_active = run_from.empty();
 774                 }
 775
 776                 log("\n-- Executing script file `%s' --\n", filename.c_str());
 777
 778                 FILE *f = stdin;
 779
 780                 if (filename != "-")
 781                         f = fopen(filename.c_str(), "r");
 782
 783                 if (f == NULL)
 784                         log_error("Can't open script file `%s' for reading: %s\n", filename.c_str(), strerror(errno));
 785
 786                 FILE *backup_script_file = Frontend::current_script_file;
 787                 Frontend::current_script_file = f;
 788
 789                 try {
 790                         std::string command;
 791                         while (fgetline(f, command)) {
 792                                 while (!command.empty() && command[command.size()-1] == '\\') {
 793                                         std::string next_line;
 794                                         if (!fgetline(f, next_line))
 795                                                 break;
 796                                         command.resize(command.size()-1);
 797                                         command += next_line;
 798                                 }
 799                                 handle_label(command, from_to_active, run_from, run_to);
 800                                 if (from_to_active)
 801                                         Pass::call(design, command);
 802                         }
 803
 804                         if (!command.empty()) {
 805                                 handle_label(command, from_to_active, run_from, run_to);
 806                                 if (from_to_active)
 807                                         Pass::call(design, command);
 808                         }
 809                 }
 810                 catch (...) {
 811                         Frontend::current_script_file = backup_script_file;
 812                         throw;
 813                 }
 814
 815                 Frontend::current_script_file = backup_script_file;
 816
 817                 if (filename != "-")
 818                         fclose(f);
 819
 820                 if (backend_command != NULL && *backend_command == "auto")
 821                         *backend_command = "";
 822
 823                 return;
 824         }
 825
 826         if (filename == "-") {
 827                 log("\n-- Parsing stdin using frontend `%s' --\n", command.c_str());
 828         } else {
 829                 log("\n-- Parsing `%s' using frontend `%s' --\n", filename.c_str(), command.c_str());
 830         }
 831
 832         Frontend::frontend_call(design, NULL, filename, command);
 833 }
 834
 835 void run_frontend(std::string filename, std::string command, RTLIL::Design *design)
 836 {
 837         run_frontend(filename, command, nullptr, nullptr, design);
 838 }
 839
 840 void run_pass(std::string command, RTLIL::Design *design)
 841 {
 842         if (design == nullptr)
 843                 design = yosys_design;
 844
 845         log("\n-- Running command `%s' --\n", command.c_str());
 846
 847         Pass::call(design, command);
 848 }
 849
 850 void run_backend(std::string filename, std::string command, RTLIL::Design *design)
 851 {
 852         if (design == nullptr)
 853                 design = yosys_design;
 854
 855         if (command == "auto") {
 856                 if (filename.size() > 2 && filename.substr(filename.size()-2) == ".v")
 857                         command = "verilog";
 858                 else if (filename.size() > 3 && filename.substr(filename.size()-3) == ".il")
 859                         command = "ilang";
 860                 else if (filename.size() > 5 && filename.substr(filename.size()-5) == ".blif")
 861                         command = "blif";
 862                 else if (filename.size() > 5 && filename.substr(filename.size()-5) == ".edif")
 863                         command = "edif";
 864                 else if (filename.size() > 5 && filename.substr(filename.size()-5) == ".json")
 865                         command = "json";
 866                 else if (filename == "-")
 867                         command = "ilang";
 868                 else if (filename.empty())
 869                         return;
 870                 else
 871                         log_error("Can't guess backend for output file `%s' (missing -b option)!\n", filename.c_str());
 872         }
 873
 874         if (filename.empty())
 875                 filename = "-";
 876
 877         if (filename == "-") {
 878                 log("\n-- Writing to stdout using backend `%s' --\n", command.c_str());
 879         } else {
 880                 log("\n-- Writing to `%s' using backend `%s' --\n", filename.c_str(), command.c_str());
 881         }
 882
 883         Backend::backend_call(design, NULL, filename, command);
 884 }
 885
 886 #ifdef YOSYS_ENABLE_READLINE
 887 static char *readline_cmd_generator(const char *text, int state)
 888 {
 889         static std::map<std::string, Pass*>::iterator it;
 890         static int len;
 891
 892         if (!state) {
 893                 it = pass_register.begin();
 894                 len = strlen(text);
 895         }
 896
 897         for (; it != pass_register.end(); it++) {
 898                 if (it->first.substr(0, len) == text)
 899                         return strdup((it++)->first.c_str());
 900         }
 901         return NULL;
 902 }
 903
 904 static char *readline_obj_generator(const char *text, int state)
 905 {
 906         static std::vector<char*> obj_names;
 907         static size_t idx;
 908
 909         if (!state)
 910         {
 911                 idx = 0;
 912                 obj_names.clear();
 913
 914                 RTLIL::Design *design = yosys_get_design();
 915                 int len = strlen(text);
 916
 917                 if (design->selected_active_module.empty())
 918                 {
 919                         for (auto &it : design->modules_)
 920                                 if (RTLIL::unescape_id(it.first).substr(0, len) == text)
 921                                         obj_names.push_back(strdup(RTLIL::id2cstr(it.first)));
 922                 }
 923                 else
 924                 if (design->modules_.count(design->selected_active_module) > 0)
 925                 {
 926                         RTLIL::Module *module = design->modules_.at(design->selected_active_module);
 927
 928                         for (auto &it : module->wires_)
 929                                 if (RTLIL::unescape_id(it.first).substr(0, len) == text)
 930                                         obj_names.push_back(strdup(RTLIL::id2cstr(it.first)));
 931
 932                         for (auto &it : module->memories)
 933                                 if (RTLIL::unescape_id(it.first).substr(0, len) == text)
 934                                         obj_names.push_back(strdup(RTLIL::id2cstr(it.first)));
 935
 936                         for (auto &it : module->cells_)
 937                                 if (RTLIL::unescape_id(it.first).substr(0, len) == text)
 938                                         obj_names.push_back(strdup(RTLIL::id2cstr(it.first)));
 939
 940                         for (auto &it : module->processes)
 941                                 if (RTLIL::unescape_id(it.first).substr(0, len) == text)
 942                                         obj_names.push_back(strdup(RTLIL::id2cstr(it.first)));
 943                 }
 944
 945                 std::sort(obj_names.begin(), obj_names.end());
 946         }
 947
 948         if (idx < obj_names.size())
 949                 return strdup(obj_names[idx++]);
 950
 951         idx = 0;
 952         obj_names.clear();
 953         return NULL;
 954 }
 955
 956 static char **readline_completion(const char *text, int start, int)
 957 {
 958         if (start == 0)
 959                 return rl_completion_matches(text, readline_cmd_generator);
 960         if (strncmp(rl_line_buffer, "read_", 5) && strncmp(rl_line_buffer, "write_", 6))
 961                 return rl_completion_matches(text, readline_obj_generator);
 962         return NULL;
 963 }
 964 #endif
 965
 966 void shell(RTLIL::Design *design)
 967 {
 968         static int recursion_counter = 0;
 969
 970         recursion_counter++;
 971         log_cmd_error_throw = true;
 972
 973 #ifdef YOSYS_ENABLE_READLINE
 974         rl_readline_name = "yosys";
 975         rl_attempted_completion_function = readline_completion;
 976         rl_basic_word_break_characters = " \t\n";
 977 #endif
 978
 979         char *command = NULL;
 980 #ifdef YOSYS_ENABLE_READLINE
 981         while ((command = readline(create_prompt(design, recursion_counter))) != NULL)
 982         {
 983 #else
 984         char command_buffer[4096];
 985         while (1)
 986         {
 987                 fputs(create_prompt(design, recursion_counter), stdout);
 988                 fflush(stdout);
 989                 if ((command = fgets(command_buffer, 4096, stdin)) == NULL)
 990                         break;
 991 #endif
 992                 if (command[strspn(command, " \t\r\n")] == 0)
 993                         continue;
 994 #ifdef YOSYS_ENABLE_READLINE
 995                 add_history(command);
 996 #endif
 997
 998                 char *p = command + strspn(command, " \t\r\n");
 999                 if (!strncmp(p, "exit", 4)) {
1000                         p += 4;
1001                         p += strspn(p, " \t\r\n");
1002                         if (*p == 0)
1003                                 break;
1004                 }
1005
1006                 try {
1007                         log_assert(design->selection_stack.size() == 1);
1008                         Pass::call(design, command);
1009                 } catch (log_cmd_error_exception) {
1010                         while (design->selection_stack.size() > 1)
1011                                 design->selection_stack.pop_back();
1012                         log_reset_stack();
1013                 }
1014         }
1015         if (command == NULL)
1016                 printf("exit\n");
1017
1018         recursion_counter--;
1019         log_cmd_error_throw = false;
1020 }
1021
1022 struct ShellPass : public Pass {
1023         ShellPass() : Pass("shell", "enter interactive command mode") { }
1024         virtual void help() {
1025                 log("\n");
1026                 log("    shell\n");
1027                 log("\n");
1028                 log("This command enters the interactive command mode. This can be useful\n");
1029                 log("in a script to interrupt the script at a certain point and allow for\n");
1030                 log("interactive inspection or manual synthesis of the design at this point.\n");
1031                 log("\n");
1032                 log("The command prompt of the interactive shell indicates the current\n");
1033                 log("selection (see 'help select'):\n");
1034                 log("\n");
1035                 log("    yosys>\n");
1036                 log("        the entire design is selected\n");
1037                 log("\n");
1038                 log("    yosys*>\n");
1039                 log("        only part of the design is selected\n");
1040                 log("\n");
1041                 log("    yosys [modname]>\n");
1042                 log("        the entire module 'modname' is selected using 'select -module modname'\n");
1043                 log("\n");
1044                 log("    yosys [modname]*>\n");
1045                 log("        only part of current module 'modname' is selected\n");
1046                 log("\n");
1047                 log("When in interactive shell, some errors (e.g. invalid command arguments)\n");
1048                 log("do not terminate yosys but return to the command prompt.\n");
1049                 log("\n");
1050                 log("This command is the default action if nothing else has been specified\n");
1051                 log("on the command line.\n");
1052                 log("\n");
1053                 log("Press Ctrl-D or type 'exit' to leave the interactive shell.\n");
1054                 log("\n");
1055         }
1056         virtual void execute(std::vector<std::string> args, RTLIL::Design *design) {
1057                 extra_args(args, 1, design, false);
1058                 shell(design);
1059         }
1060 } ShellPass;
1061
1062 #ifdef YOSYS_ENABLE_READLINE
1063 struct HistoryPass : public Pass {
1064         HistoryPass() : Pass("history", "show last interactive commands") { }
1065         virtual void help() {
1066                 log("\n");
1067                 log("    history\n");
1068                 log("\n");
1069                 log("This command prints all commands in the shell history buffer. This are\n");
1070                 log("all commands executed in an interactive session, but not the commands\n");
1071                 log("from executed scripts.\n");
1072                 log("\n");
1073         }
1074         virtual void execute(std::vector<std::string> args, RTLIL::Design *design) {
1075                 extra_args(args, 1, design, false);
1076                 for(HIST_ENTRY **list = history_list(); *list != NULL; list++)
1077                         log("%s\n", (*list)->line);
1078         }
1079 } HistoryPass;
1080 #endif
1081
1082 struct ScriptPass : public Pass {
1083         ScriptPass() : Pass("script", "execute commands from script file") { }
1084         virtual void help() {
1085                 log("\n");
1086                 log("    script <filename> [<from_label>:<to_label>]\n");
1087                 log("\n");
1088                 log("This command executes the yosys commands in the specified file.\n");
1089                 log("\n");
1090                 log("The 2nd argument can be used to only execute the section of the\n");
1091                 log("file between the specified labels. An empty from label is synonymous\n");
1092                 log("for the beginning of the file and an empty to label is synonymous\n");
1093                 log("for the end of the file.\n");
1094                 log("\n");
1095                 log("If only one label is specified (without ':') then only the block\n");
1096                 log("marked with that label (until the next label) is executed.\n");
1097                 log("\n");
1098         }
1099         virtual void execute(std::vector<std::string> args, RTLIL::Design *design) {
1100                 if (args.size() < 2)
1101                         log_cmd_error("Missing script file.\n");
1102                 else if (args.size() == 2)
1103                         run_frontend(args[1], "script", design);
1104                 else if (args.size() == 3)
1105                         run_frontend(args[1], "script", NULL, &args[2], design);
1106                 else
1107                         extra_args(args, 2, design, false);
1108         }
1109 } ScriptPass;
1110
1111 YOSYS_NAMESPACE_END
1112