tcc.c

   1 /*
   2  *  TCC - Tiny C Compiler
   3  *
   4  *  Copyright (c) 2001-2004 Fabrice Bellard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #if defined NOTALLINONE || defined TCC_USE_LIBTCC
  22 #include "tcc.h"
  23 #else
  24 #include "libtcc.c"
  25 #endif
  26
  27 static char **files;
  28 static int nb_files, nb_libraries;
  29 static int multiple_files;
  30 static int print_search_dirs;
  31 static int output_type;
  32 static int reloc_output;
  33 static const char *outfile;
  34 static int do_bench = 0;
  35
  36 #define TCC_OPTION_HAS_ARG 0x0001
  37 #define TCC_OPTION_NOSEP   0x0002 /* cannot have space before option and arg */
  38
  39 static void help(void)
  40 {
  41     printf("tcc version " TCC_VERSION " - Tiny C Compiler - Copyright (C) 2001-2006 Fabrice Bellard\n"
  42            "usage: tcc [-v] [-c] [-o outfile] [-Bdir] [-bench] [-Idir] [-Dsym[=val]] [-Usym]\n"
  43            "           [-Wwarn] [-g] [-b] [-bt N] [-Ldir] [-llib] [-shared] [-soname name]\n"
  44            "           [-static] [infile1 infile2...] [-run infile args...]\n"
  45            "\n"
  46            "General options:\n"
  47            "  -v          display current version, increase verbosity\n"
  48            "  -c          compile only - generate an object file\n"
  49            "  -o outfile  set output filename\n"
  50            "  -Bdir       set tcc internal library path\n"
  51            "  -bench      output compilation statistics\n"
  52            "  -run        run compiled source\n"
  53            "  -fflag      set or reset (with 'no-' prefix) 'flag' (see man page)\n"
  54            "  -Wwarning   set or reset (with 'no-' prefix) 'warning' (see man page)\n"
  55            "  -w          disable all warnings\n"
  56            "Preprocessor options:\n"
  57            "  -E          preprocess only\n"
  58            "  -Idir       add include path 'dir'\n"
  59            "  -Dsym[=val] define 'sym' with value 'val'\n"
  60            "  -Usym       undefine 'sym'\n"
  61            "Linker options:\n"
  62            "  -Ldir       add library path 'dir'\n"
  63            "  -llib       link with dynamic or static library 'lib'\n"
  64            "  -shared     generate a shared library\n"
  65            "  -soname     set name for shared library to be used at runtime\n"
  66            "  -static     static linking\n"
  67            "  -rdynamic   export all global symbols to dynamic linker\n"
  68            "  -r          generate (relocatable) object file\n"
  69            "Debugger options:\n"
  70            "  -g          generate runtime debug info\n"
  71 #ifdef CONFIG_TCC_BCHECK
  72            "  -b          compile with built-in memory and bounds checker (implies -g)\n"
  73 #endif
  74 #ifdef CONFIG_TCC_BACKTRACE
  75            "  -bt N       show N callers in stack traces\n"
  76 #endif
  77            );
  78 }
  79
  80 typedef struct TCCOption {
  81     const char *name;
  82     uint16_t index;
  83     uint16_t flags;
  84 } TCCOption;
  85
  86 enum {
  87     TCC_OPTION_HELP,
  88     TCC_OPTION_I,
  89     TCC_OPTION_D,
  90     TCC_OPTION_U,
  91     TCC_OPTION_L,
  92     TCC_OPTION_B,
  93     TCC_OPTION_l,
  94     TCC_OPTION_bench,
  95     TCC_OPTION_bt,
  96     TCC_OPTION_b,
  97     TCC_OPTION_g,
  98     TCC_OPTION_c,
  99     TCC_OPTION_static,
 100     TCC_OPTION_shared,
 101     TCC_OPTION_soname,
 102     TCC_OPTION_o,
 103     TCC_OPTION_r,
 104     TCC_OPTION_Wl,
 105     TCC_OPTION_W,
 106     TCC_OPTION_O,
 107     TCC_OPTION_m,
 108     TCC_OPTION_f,
 109     TCC_OPTION_nostdinc,
 110     TCC_OPTION_nostdlib,
 111     TCC_OPTION_print_search_dirs,
 112     TCC_OPTION_rdynamic,
 113     TCC_OPTION_run,
 114     TCC_OPTION_v,
 115     TCC_OPTION_w,
 116     TCC_OPTION_pipe,
 117     TCC_OPTION_E,
 118     TCC_OPTION_x,
 119 };
 120
 121 static const TCCOption tcc_options[] = {
 122     { "h", TCC_OPTION_HELP, 0 },
 123     { "?", TCC_OPTION_HELP, 0 },
 124     { "I", TCC_OPTION_I, TCC_OPTION_HAS_ARG },
 125     { "D", TCC_OPTION_D, TCC_OPTION_HAS_ARG },
 126     { "U", TCC_OPTION_U, TCC_OPTION_HAS_ARG },
 127     { "L", TCC_OPTION_L, TCC_OPTION_HAS_ARG },
 128     { "B", TCC_OPTION_B, TCC_OPTION_HAS_ARG },
 129     { "l", TCC_OPTION_l, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
 130     { "bench", TCC_OPTION_bench, 0 },
 131     { "bt", TCC_OPTION_bt, TCC_OPTION_HAS_ARG },
 132 #ifdef CONFIG_TCC_BCHECK
 133     { "b", TCC_OPTION_b, 0 },
 134 #endif
 135     { "g", TCC_OPTION_g, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
 136     { "c", TCC_OPTION_c, 0 },
 137     { "static", TCC_OPTION_static, 0 },
 138     { "shared", TCC_OPTION_shared, 0 },
 139     { "soname", TCC_OPTION_soname, TCC_OPTION_HAS_ARG },
 140     { "o", TCC_OPTION_o, TCC_OPTION_HAS_ARG },
 141     { "run", TCC_OPTION_run, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
 142     { "rdynamic", TCC_OPTION_rdynamic, 0 },
 143     { "r", TCC_OPTION_r, 0 },
 144     { "Wl,", TCC_OPTION_Wl, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
 145     { "W", TCC_OPTION_W, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
 146     { "O", TCC_OPTION_O, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
 147     { "m", TCC_OPTION_m, TCC_OPTION_HAS_ARG },
 148     { "f", TCC_OPTION_f, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
 149     { "nostdinc", TCC_OPTION_nostdinc, 0 },
 150     { "nostdlib", TCC_OPTION_nostdlib, 0 },
 151     { "print-search-dirs", TCC_OPTION_print_search_dirs, 0 },
 152     { "v", TCC_OPTION_v, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
 153     { "w", TCC_OPTION_w, 0 },
 154     { "pipe", TCC_OPTION_pipe, 0},
 155     { "E", TCC_OPTION_E, 0},
 156     { "x", TCC_OPTION_x, TCC_OPTION_HAS_ARG },
 157     { NULL },
 158 };
 159
 160 static int64_t getclock_us(void)
 161 {
 162 #ifdef _WIN32
 163     struct _timeb tb;
 164     _ftime(&tb);
 165     return (tb.time * 1000LL + tb.millitm) * 1000LL;
 166 #else
 167     struct timeval tv;
 168     gettimeofday(&tv, NULL);
 169     return tv.tv_sec * 1000000LL + tv.tv_usec;
 170 #endif
 171 }
 172
 173 static int strstart(const char *str, const char *val, const char **ptr)
 174 {
 175     const char *p, *q;
 176     p = str;
 177     q = val;
 178     while (*q != '\0') {
 179         if (*p != *q)
 180             return 0;
 181         p++;
 182         q++;
 183     }
 184     if (ptr)
 185         *ptr = p;
 186     return 1;
 187 }
 188
 189 /* convert 'str' into an array of space separated strings */
 190 static int expand_args(char ***pargv, const char *str)
 191 {
 192     const char *s1;
 193     char **argv, *arg;
 194     int argc, len;
 195
 196     argc = 0;
 197     argv = NULL;
 198     for(;;) {
 199         while (is_space(*str))
 200             str++;
 201         if (*str == '\0')
 202             break;
 203         s1 = str;
 204         while (*str != '\0' && !is_space(*str))
 205             str++;
 206         len = str - s1;
 207         arg = tcc_malloc(len + 1);
 208         memcpy(arg, s1, len);
 209         arg[len] = '\0';
 210         dynarray_add((void ***)&argv, &argc, arg);
 211     }
 212     *pargv = argv;
 213     return argc;
 214 }
 215
 216 static int parse_args(TCCState *s, int argc, char **argv)
 217 {
 218     int optind;
 219     const TCCOption *popt;
 220     const char *optarg, *p1, *r1;
 221     char *r;
 222
 223     optind = 0;
 224     while (optind < argc) {
 225
 226         r = argv[optind++];
 227         if (r[0] != '-' || r[1] == '\0') {
 228             /* add a new file */
 229             dynarray_add((void ***)&files, &nb_files, r);
 230             if (!multiple_files) {
 231                 optind--;
 232                 /* argv[0] will be this file */
 233                 break;
 234             }
 235         } else {
 236             /* find option in table (match only the first chars */
 237             popt = tcc_options;
 238             for(;;) {
 239                 p1 = popt->name;
 240                 if (p1 == NULL)
 241                     error("invalid option -- '%s'", r);
 242                 r1 = r + 1;
 243                 for(;;) {
 244                     if (*p1 == '\0')
 245                         goto option_found;
 246                     if (*r1 != *p1)
 247                         break;
 248                     p1++;
 249                     r1++;
 250                 }
 251                 popt++;
 252             }
 253         option_found:
 254             if (popt->flags & TCC_OPTION_HAS_ARG) {
 255                 if (*r1 != '\0' || (popt->flags & TCC_OPTION_NOSEP)) {
 256                     optarg = r1;
 257                 } else {
 258                     if (optind >= argc)
 259                         error("argument to '%s' is missing", r);
 260                     optarg = argv[optind++];
 261                 }
 262             } else {
 263                 if (*r1 != '\0')
 264                     return 0;
 265                 optarg = NULL;
 266             }
 267
 268             switch(popt->index) {
 269             case TCC_OPTION_HELP:
 270                 return 0;
 271
 272             case TCC_OPTION_I:
 273                 if (tcc_add_include_path(s, optarg) < 0)
 274                     error("too many include paths");
 275                 break;
 276             case TCC_OPTION_D:
 277                 {
 278                     char *sym, *value;
 279                     sym = (char *)optarg;
 280                     value = strchr(sym, '=');
 281                     if (value) {
 282                         *value = '\0';
 283                         value++;
 284                     }
 285                     tcc_define_symbol(s, sym, value);
 286                 }
 287                 break;
 288             case TCC_OPTION_U:
 289                 tcc_undefine_symbol(s, optarg);
 290                 break;
 291             case TCC_OPTION_L:
 292                 tcc_add_library_path(s, optarg);
 293                 break;
 294             case TCC_OPTION_B:
 295                 /* set tcc utilities path (mainly for tcc development) */
 296                 tcc_set_lib_path(s, optarg);
 297                 break;
 298             case TCC_OPTION_l:
 299                 dynarray_add((void ***)&files, &nb_files, r);
 300                 nb_libraries++;
 301                 break;
 302             case TCC_OPTION_bench:
 303                 do_bench = 1;
 304                 break;
 305 #ifdef CONFIG_TCC_BACKTRACE
 306             case TCC_OPTION_bt:
 307                 set_num_callers(atoi(optarg));
 308                 break;
 309 #endif
 310 #ifdef CONFIG_TCC_BCHECK
 311             case TCC_OPTION_b:
 312                 s->do_bounds_check = 1;
 313                 s->do_debug = 1;
 314                 break;
 315 #endif
 316             case TCC_OPTION_g:
 317                 s->do_debug = 1;
 318                 break;
 319             case TCC_OPTION_c:
 320                 multiple_files = 1;
 321                 output_type = TCC_OUTPUT_OBJ;
 322                 break;
 323             case TCC_OPTION_static:
 324                 s->static_link = 1;
 325                 break;
 326             case TCC_OPTION_shared:
 327                 output_type = TCC_OUTPUT_DLL;
 328                 break;
 329             case TCC_OPTION_soname:
 330                 s->soname = optarg;
 331                 break;
 332             case TCC_OPTION_o:
 333                 multiple_files = 1;
 334                 outfile = optarg;
 335                 break;
 336             case TCC_OPTION_r:
 337                 /* generate a .o merging several output files */
 338                 reloc_output = 1;
 339                 output_type = TCC_OUTPUT_OBJ;
 340                 break;
 341             case TCC_OPTION_nostdinc:
 342                 s->nostdinc = 1;
 343                 break;
 344             case TCC_OPTION_nostdlib:
 345                 s->nostdlib = 1;
 346                 break;
 347             case TCC_OPTION_print_search_dirs:
 348                 print_search_dirs = 1;
 349                 break;
 350             case TCC_OPTION_run:
 351                 {
 352                     int argc1;
 353                     char **argv1;
 354                     argc1 = expand_args(&argv1, optarg);
 355                     if (argc1 > 0) {
 356                         parse_args(s, argc1, argv1);
 357                     }
 358                     multiple_files = 0;
 359                     output_type = TCC_OUTPUT_MEMORY;
 360                 }
 361                 break;
 362             case TCC_OPTION_v:
 363                 do {
 364                     if (0 == s->verbose++)
 365                         printf("tcc version %s\n", TCC_VERSION);
 366                 } while (*optarg++ == 'v');
 367                 break;
 368             case TCC_OPTION_f:
 369                 if (tcc_set_flag(s, optarg, 1) < 0 && s->warn_unsupported)
 370                     goto unsupported_option;
 371                 break;
 372             case TCC_OPTION_W:
 373                 if (tcc_set_warning(s, optarg, 1) < 0 &&
 374                     s->warn_unsupported)
 375                     goto unsupported_option;
 376                 break;
 377             case TCC_OPTION_w:
 378                 s->warn_none = 1;
 379                 break;
 380             case TCC_OPTION_rdynamic:
 381                 s->rdynamic = 1;
 382                 break;
 383             case TCC_OPTION_Wl:
 384                 {
 385                     const char *p;
 386                     if (strstart(optarg, "-Ttext,", &p)) {
 387                         s->text_addr = strtoul(p, NULL, 16);
 388                         s->has_text_addr = 1;
 389                     } else if (strstart(optarg, "--section-alignment,", &p)) {
 390                         s->section_align = strtoul(p, NULL, 16);
 391                     } else if (strstart(optarg, "--image-base,", &p)) {
 392                         s->text_addr = strtoul(p, NULL, 16);
 393                         s->has_text_addr = 1;
 394 #ifdef TCC_TARGET_PE
 395                     } else if (strstart(optarg, "--file-alignment,", &p)) {
 396                         s->pe_file_align = strtoul(p, NULL, 16);
 397                     } else if (strstart(optarg, "--subsystem,", &p)) {
 398 #if defined(TCC_TARGET_I386) || defined(TCC_TARGET_X86_64)
 399                         if (!strcmp(p, "native"))
 400                             s->pe_subsystem = 1;
 401                         else if (!strcmp(p, "console"))
 402                             s->pe_subsystem = 3;
 403                         else if (!strcmp(p, "gui"))
 404                             s->pe_subsystem = 2;
 405                         else if (!strcmp(p, "posix"))
 406                             s->pe_subsystem = 7;
 407                         else if (!strcmp(p, "efiapp"))
 408                             s->pe_subsystem = 10;
 409                         else if (!strcmp(p, "efiboot"))
 410                             s->pe_subsystem = 11;
 411                         else if (!strcmp(p, "efiruntime"))
 412                             s->pe_subsystem = 12;
 413                         else if (!strcmp(p, "efirom"))
 414                             s->pe_subsystem = 13;
 415 #elif defined(TCC_TARGET_ARM)
 416                         if (!strcmp(p, "wince"))
 417                             s->pe_subsystem = 9;
 418 #endif
 419                         else {
 420                             error("invalid subsystem '%s'", p);
 421                         }
 422 #endif
 423                     } else if (strstart(optarg, "--oformat,", &p)) {
 424 #if defined(TCC_TARGET_PE)
 425                         if (strstart(p, "pe-", NULL)) {
 426 #else
 427 #if defined(TCC_TARGET_X86_64)
 428                         if (strstart(p, "elf64-", NULL)) {
 429 #else
 430                         if (strstart(p, "elf32-", NULL)) {
 431 #endif
 432 #endif
 433                             s->output_format = TCC_OUTPUT_FORMAT_ELF;
 434                         } else if (!strcmp(p, "binary")) {
 435                             s->output_format = TCC_OUTPUT_FORMAT_BINARY;
 436                         } else
 437 #ifdef TCC_TARGET_COFF
 438                         if (!strcmp(p, "coff")) {
 439                             s->output_format = TCC_OUTPUT_FORMAT_COFF;
 440                         } else
 441 #endif
 442                         {
 443                             error("target %s not found", p);
 444                         }
 445                     } else if (strstart(optarg, "-rpath=", &p)) {
 446                         s->rpath = p;
 447                     } else {
 448                         error("unsupported linker option '%s'", optarg);
 449                     }
 450                 }
 451                 break;
 452             case TCC_OPTION_E:
 453                 output_type = TCC_OUTPUT_PREPROCESS;
 454                 break;
 455             case TCC_OPTION_x:
 456                 break;
 457             default:
 458                 if (s->warn_unsupported) {
 459                 unsupported_option:
 460                     warning("unsupported option '%s'", r);
 461                 }
 462                 break;
 463             }
 464         }
 465     }
 466     return optind + 1;
 467 }
 468
 469 int main(int argc, char **argv)
 470 {
 471     int i;
 472     TCCState *s;
 473     int nb_objfiles, ret, optind;
 474     char objfilename[1024];
 475     int64_t start_time = 0;
 476
 477     s = tcc_new();
 478
 479     output_type = TCC_OUTPUT_EXE;
 480     outfile = NULL;
 481     multiple_files = 1;
 482     files = NULL;
 483     nb_files = 0;
 484     nb_libraries = 0;
 485     reloc_output = 0;
 486     print_search_dirs = 0;
 487     ret = 0;
 488
 489     optind = parse_args(s, argc - 1, argv + 1);
 490     if (print_search_dirs) {
 491         /* enough for Linux kernel */
 492         printf("install: %s/\n", s->tcc_lib_path);
 493         return 0;
 494     }
 495     if (optind == 0 || nb_files == 0) {
 496         if (optind && s->verbose)
 497             return 0;
 498         help();
 499         return 1;
 500     }
 501
 502     nb_objfiles = nb_files - nb_libraries;
 503
 504     /* if outfile provided without other options, we output an
 505        executable */
 506     if (outfile && output_type == TCC_OUTPUT_MEMORY)
 507         output_type = TCC_OUTPUT_EXE;
 508
 509     /* check -c consistency : only single file handled. XXX: checks file type */
 510     if (output_type == TCC_OUTPUT_OBJ && !reloc_output) {
 511         /* accepts only a single input file */
 512         if (nb_objfiles != 1)
 513             error("cannot specify multiple files with -c");
 514         if (nb_libraries != 0)
 515             error("cannot specify libraries with -c");
 516     }
 517
 518
 519     if (output_type == TCC_OUTPUT_PREPROCESS) {
 520         if (!outfile) {
 521             s->outfile = stdout;
 522         } else {
 523             s->outfile = fopen(outfile, "w");
 524             if (!s->outfile)
 525                 error("could not open '%s", outfile);
 526         }
 527     } else if (output_type != TCC_OUTPUT_MEMORY) {
 528         if (!outfile) {
 529             /* compute default outfile name */
 530             char *ext;
 531             const char *name =
 532                 strcmp(files[0], "-") == 0 ? "a" : tcc_basename(files[0]);
 533             pstrcpy(objfilename, sizeof(objfilename), name);
 534             ext = tcc_fileextension(objfilename);
 535 #ifdef TCC_TARGET_PE
 536             if (output_type == TCC_OUTPUT_DLL)
 537                 strcpy(ext, ".dll");
 538             else
 539             if (output_type == TCC_OUTPUT_EXE)
 540                 strcpy(ext, ".exe");
 541             else
 542 #endif
 543             if (output_type == TCC_OUTPUT_OBJ && !reloc_output && *ext)
 544                 strcpy(ext, ".o");
 545             else
 546                 pstrcpy(objfilename, sizeof(objfilename), "a.out");
 547             outfile = objfilename;
 548         }
 549     }
 550
 551     if (do_bench) {
 552         start_time = getclock_us();
 553     }
 554
 555     tcc_set_output_type(s, output_type);
 556
 557     /* compile or add each files or library */
 558     for(i = 0; i < nb_files && ret == 0; i++) {
 559         const char *filename;
 560
 561         filename = files[i];
 562         if (filename[0] == '-' && filename[1]) {
 563             if (tcc_add_library(s, filename + 2) < 0) {
 564                 error_noabort("cannot find %s", filename);
 565                 ret = 1;
 566             }
 567         } else {
 568             if (1 == s->verbose)
 569                 printf("-> %s\n", filename);
 570             if (tcc_add_file(s, filename) < 0)
 571                 ret = 1;
 572         }
 573     }
 574
 575     /* free all files */
 576     tcc_free(files);
 577
 578     if (0 == ret) {
 579         if (do_bench)
 580             tcc_print_stats(s, getclock_us() - start_time);
 581
 582         if (s->output_type == TCC_OUTPUT_PREPROCESS) {
 583             if (outfile)
 584                 fclose(s->outfile);
 585         } else if (s->output_type == TCC_OUTPUT_MEMORY)
 586             ret = tcc_run(s, argc - optind, argv + optind);
 587         else
 588             ret = tcc_output_file(s, outfile) ? 1 : 0;
 589     }
 590
 591     tcc_delete(s);
 592
 593 #ifdef MEM_DEBUG
 594     if (do_bench) {
 595         printf("memory: %d bytes, max = %d bytes\n", mem_cur_size, mem_max_size);
 596     }
 597 #endif
 598     return ret;
 599 }