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 #include "libtcc.c"
  22
  23 #if !defined(LIBTCC)
  24
  25 static int64_t getclock_us(void)
  26 {
  27 #ifdef _WIN32
  28     struct _timeb tb;
  29     _ftime(&tb);
  30     return (tb.time * 1000LL + tb.millitm) * 1000LL;
  31 #else
  32     struct timeval tv;
  33     gettimeofday(&tv, NULL);
  34     return tv.tv_sec * 1000000LL + tv.tv_usec;
  35 #endif
  36 }
  37
  38 void help(void)
  39 {
  40     printf("tcc version " TCC_VERSION " - Tiny C Compiler - Copyright (C) 2001-2006 Fabrice Bellard\n"
  41            "usage: tcc [-v] [-c] [-o outfile] [-Bdir] [-bench] [-Idir] [-Dsym[=val]] [-Usym]\n"
  42            "           [-Wwarn] [-g] [-b] [-bt N] [-Ldir] [-llib] [-shared] [-soname name]\n"
  43            "           [-static] [infile1 infile2...] [-run infile args...]\n"
  44            "\n"
  45            "General options:\n"
  46            "  -v          display current version, increase verbosity\n"
  47            "  -c          compile only - generate an object file\n"
  48            "  -o outfile  set output filename\n"
  49            "  -Bdir       set tcc internal library path\n"
  50            "  -bench      output compilation statistics\n"
  51            "  -run        run compiled source\n"
  52            "  -fflag      set or reset (with 'no-' prefix) 'flag' (see man page)\n"
  53            "  -Wwarning   set or reset (with 'no-' prefix) 'warning' (see man page)\n"
  54            "  -w          disable all warnings\n"
  55            "Preprocessor options:\n"
  56            "  -E          preprocess only\n"
  57            "  -Idir       add include path 'dir'\n"
  58            "  -Dsym[=val] define 'sym' with value 'val'\n"
  59            "  -Usym       undefine 'sym'\n"
  60            "Linker options:\n"
  61            "  -Ldir       add library path 'dir'\n"
  62            "  -llib       link with dynamic or static library 'lib'\n"
  63            "  -shared     generate a shared library\n"
  64            "  -soname     set name for shared library to be used at runtime\n"
  65            "  -static     static linking\n"
  66            "  -rdynamic   export all global symbols to dynamic linker\n"
  67            "  -r          generate (relocatable) object file\n"
  68            "Debugger options:\n"
  69            "  -g          generate runtime debug info\n"
  70 #ifdef CONFIG_TCC_BCHECK
  71            "  -b          compile with built-in memory and bounds checker (implies -g)\n"
  72 #endif
  73 #ifdef CONFIG_TCC_BACKTRACE
  74            "  -bt N       show N callers in stack traces\n"
  75 #endif
  76            );
  77 }
  78
  79 #define TCC_OPTION_HAS_ARG 0x0001
  80 #define TCC_OPTION_NOSEP   0x0002 /* cannot have space before option and arg */
  81
  82 typedef struct TCCOption {
  83     const char *name;
  84     uint16_t index;
  85     uint16_t flags;
  86 } TCCOption;
  87
  88 enum {
  89     TCC_OPTION_HELP,
  90     TCC_OPTION_I,
  91     TCC_OPTION_D,
  92     TCC_OPTION_U,
  93     TCC_OPTION_L,
  94     TCC_OPTION_B,
  95     TCC_OPTION_l,
  96     TCC_OPTION_bench,
  97     TCC_OPTION_bt,
  98     TCC_OPTION_b,
  99     TCC_OPTION_g,
 100     TCC_OPTION_c,
 101     TCC_OPTION_static,
 102     TCC_OPTION_shared,
 103     TCC_OPTION_soname,
 104     TCC_OPTION_o,
 105     TCC_OPTION_r,
 106     TCC_OPTION_Wl,
 107     TCC_OPTION_W,
 108     TCC_OPTION_O,
 109     TCC_OPTION_m,
 110     TCC_OPTION_f,
 111     TCC_OPTION_nostdinc,
 112     TCC_OPTION_nostdlib,
 113     TCC_OPTION_print_search_dirs,
 114     TCC_OPTION_rdynamic,
 115     TCC_OPTION_run,
 116     TCC_OPTION_v,
 117     TCC_OPTION_w,
 118     TCC_OPTION_pipe,
 119     TCC_OPTION_E,
 120 };
 121
 122 static const TCCOption tcc_options[] = {
 123     { "h", TCC_OPTION_HELP, 0 },
 124     { "?", TCC_OPTION_HELP, 0 },
 125     { "I", TCC_OPTION_I, TCC_OPTION_HAS_ARG },
 126     { "D", TCC_OPTION_D, TCC_OPTION_HAS_ARG },
 127     { "U", TCC_OPTION_U, TCC_OPTION_HAS_ARG },
 128     { "L", TCC_OPTION_L, TCC_OPTION_HAS_ARG },
 129     { "B", TCC_OPTION_B, TCC_OPTION_HAS_ARG },
 130     { "l", TCC_OPTION_l, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
 131     { "bench", TCC_OPTION_bench, 0 },
 132     { "bt", TCC_OPTION_bt, TCC_OPTION_HAS_ARG },
 133 #ifdef CONFIG_TCC_BCHECK
 134     { "b", TCC_OPTION_b, 0 },
 135 #endif
 136     { "g", TCC_OPTION_g, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
 137     { "c", TCC_OPTION_c, 0 },
 138     { "static", TCC_OPTION_static, 0 },
 139     { "shared", TCC_OPTION_shared, 0 },
 140     { "soname", TCC_OPTION_soname, TCC_OPTION_HAS_ARG },
 141     { "o", TCC_OPTION_o, TCC_OPTION_HAS_ARG },
 142     { "run", TCC_OPTION_run, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
 143     { "rdynamic", TCC_OPTION_rdynamic, 0 },
 144     { "r", TCC_OPTION_r, 0 },
 145     { "Wl,", TCC_OPTION_Wl, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
 146     { "W", TCC_OPTION_W, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
 147     { "O", TCC_OPTION_O, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
 148     { "m", TCC_OPTION_m, TCC_OPTION_HAS_ARG },
 149     { "f", TCC_OPTION_f, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
 150     { "nostdinc", TCC_OPTION_nostdinc, 0 },
 151     { "nostdlib", TCC_OPTION_nostdlib, 0 },
 152     { "print-search-dirs", TCC_OPTION_print_search_dirs, 0 },
 153     { "v", TCC_OPTION_v, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
 154     { "w", TCC_OPTION_w, 0 },
 155     { "pipe", TCC_OPTION_pipe, 0},
 156     { "E", TCC_OPTION_E, 0},
 157     { NULL },
 158 };
 159
 160 /* convert 'str' into an array of space separated strings */
 161 static int expand_args(char ***pargv, const char *str)
 162 {
 163     const char *s1;
 164     char **argv, *arg;
 165     int argc, len;
 166
 167     argc = 0;
 168     argv = NULL;
 169     for(;;) {
 170         while (is_space(*str))
 171             str++;
 172         if (*str == '\0')
 173             break;
 174         s1 = str;
 175         while (*str != '\0' && !is_space(*str))
 176             str++;
 177         len = str - s1;
 178         arg = tcc_malloc(len + 1);
 179         memcpy(arg, s1, len);
 180         arg[len] = '\0';
 181         dynarray_add((void ***)&argv, &argc, arg);
 182     }
 183     *pargv = argv;
 184     return argc;
 185 }
 186
 187 static char **files;
 188 static int nb_files, nb_libraries;
 189 static int multiple_files;
 190 static int print_search_dirs;
 191 static int output_type;
 192 static int reloc_output;
 193 static const char *outfile;
 194
 195 int parse_args(TCCState *s, int argc, char **argv)
 196 {
 197     int optind;
 198     const TCCOption *popt;
 199     const char *optarg, *p1, *r1;
 200     char *r;
 201
 202     optind = 0;
 203     while (optind < argc) {
 204
 205         r = argv[optind++];
 206         if (r[0] != '-' || r[1] == '\0') {
 207             /* add a new file */
 208             dynarray_add((void ***)&files, &nb_files, r);
 209             if (!multiple_files) {
 210                 optind--;
 211                 /* argv[0] will be this file */
 212                 break;
 213             }
 214         } else {
 215             /* find option in table (match only the first chars */
 216             popt = tcc_options;
 217             for(;;) {
 218                 p1 = popt->name;
 219                 if (p1 == NULL)
 220                     error("invalid option -- '%s'", r);
 221                 r1 = r + 1;
 222                 for(;;) {
 223                     if (*p1 == '\0')
 224                         goto option_found;
 225                     if (*r1 != *p1)
 226                         break;
 227                     p1++;
 228                     r1++;
 229                 }
 230                 popt++;
 231             }
 232         option_found:
 233             if (popt->flags & TCC_OPTION_HAS_ARG) {
 234                 if (*r1 != '\0' || (popt->flags & TCC_OPTION_NOSEP)) {
 235                     optarg = r1;
 236                 } else {
 237                     if (optind >= argc)
 238                         error("argument to '%s' is missing", r);
 239                     optarg = argv[optind++];
 240                 }
 241             } else {
 242                 if (*r1 != '\0')
 243                     return 0;
 244                 optarg = NULL;
 245             }
 246
 247             switch(popt->index) {
 248             case TCC_OPTION_HELP:
 249                 return 0;
 250
 251             case TCC_OPTION_I:
 252                 if (tcc_add_include_path(s, optarg) < 0)
 253                     error("too many include paths");
 254                 break;
 255             case TCC_OPTION_D:
 256                 {
 257                     char *sym, *value;
 258                     sym = (char *)optarg;
 259                     value = strchr(sym, '=');
 260                     if (value) {
 261                         *value = '\0';
 262                         value++;
 263                     }
 264                     tcc_define_symbol(s, sym, value);
 265                 }
 266                 break;
 267             case TCC_OPTION_U:
 268                 tcc_undefine_symbol(s, optarg);
 269                 break;
 270             case TCC_OPTION_L:
 271                 tcc_add_library_path(s, optarg);
 272                 break;
 273             case TCC_OPTION_B:
 274                 /* set tcc utilities path (mainly for tcc development) */
 275                 tcc_set_lib_path(s, optarg);
 276                 break;
 277             case TCC_OPTION_l:
 278                 dynarray_add((void ***)&files, &nb_files, r);
 279                 nb_libraries++;
 280                 break;
 281             case TCC_OPTION_bench:
 282                 do_bench = 1;
 283                 break;
 284 #ifdef CONFIG_TCC_BACKTRACE
 285             case TCC_OPTION_bt:
 286                 num_callers = atoi(optarg);
 287                 break;
 288 #endif
 289 #ifdef CONFIG_TCC_BCHECK
 290             case TCC_OPTION_b:
 291                 do_bounds_check = 1;
 292                 do_debug = 1;
 293                 break;
 294 #endif
 295             case TCC_OPTION_g:
 296                 do_debug = 1;
 297                 break;
 298             case TCC_OPTION_c:
 299                 multiple_files = 1;
 300                 output_type = TCC_OUTPUT_OBJ;
 301                 break;
 302             case TCC_OPTION_static:
 303                 s->static_link = 1;
 304                 break;
 305             case TCC_OPTION_shared:
 306                 output_type = TCC_OUTPUT_DLL;
 307                 break;
 308             case TCC_OPTION_soname:
 309                 s->soname = optarg;
 310                 break;
 311             case TCC_OPTION_o:
 312                 multiple_files = 1;
 313                 outfile = optarg;
 314                 break;
 315             case TCC_OPTION_r:
 316                 /* generate a .o merging several output files */
 317                 reloc_output = 1;
 318                 output_type = TCC_OUTPUT_OBJ;
 319                 break;
 320             case TCC_OPTION_nostdinc:
 321                 s->nostdinc = 1;
 322                 break;
 323             case TCC_OPTION_nostdlib:
 324                 s->nostdlib = 1;
 325                 break;
 326             case TCC_OPTION_print_search_dirs:
 327                 print_search_dirs = 1;
 328                 break;
 329             case TCC_OPTION_run:
 330                 {
 331                     int argc1;
 332                     char **argv1;
 333                     argc1 = expand_args(&argv1, optarg);
 334                     if (argc1 > 0) {
 335                         parse_args(s, argc1, argv1);
 336                     }
 337                     multiple_files = 0;
 338                     output_type = TCC_OUTPUT_MEMORY;
 339                 }
 340                 break;
 341             case TCC_OPTION_v:
 342                 do {
 343                     if (0 == verbose++)
 344                         printf("tcc version %s\n", TCC_VERSION);
 345                 } while (*optarg++ == 'v');
 346                 break;
 347             case TCC_OPTION_f:
 348                 if (tcc_set_flag(s, optarg, 1) < 0 && s->warn_unsupported)
 349                     goto unsupported_option;
 350                 break;
 351             case TCC_OPTION_W:
 352                 if (tcc_set_warning(s, optarg, 1) < 0 &&
 353                     s->warn_unsupported)
 354                     goto unsupported_option;
 355                 break;
 356             case TCC_OPTION_w:
 357                 s->warn_none = 1;
 358                 break;
 359             case TCC_OPTION_rdynamic:
 360                 s->rdynamic = 1;
 361                 break;
 362             case TCC_OPTION_Wl:
 363                 {
 364                     const char *p;
 365                     if (strstart(optarg, "-Ttext,", &p)) {
 366                         s->text_addr = strtoul(p, NULL, 16);
 367                         s->has_text_addr = 1;
 368                     } else if (strstart(optarg, "--oformat,", &p)) {
 369                         if (strstart(p, "elf32-", NULL)) {
 370                             s->output_format = TCC_OUTPUT_FORMAT_ELF;
 371                         } else if (!strcmp(p, "binary")) {
 372                             s->output_format = TCC_OUTPUT_FORMAT_BINARY;
 373                         } else
 374 #ifdef TCC_TARGET_COFF
 375                         if (!strcmp(p, "coff")) {
 376                             s->output_format = TCC_OUTPUT_FORMAT_COFF;
 377                         } else
 378 #endif
 379                         {
 380                             error("target %s not found", p);
 381                         }
 382                     } else {
 383                         error("unsupported linker option '%s'", optarg);
 384                     }
 385                 }
 386                 break;
 387             case TCC_OPTION_E:
 388                 output_type = TCC_OUTPUT_PREPROCESS;
 389                 break;
 390             default:
 391                 if (s->warn_unsupported) {
 392                 unsupported_option:
 393                     warning("unsupported option '%s'", r);
 394                 }
 395                 break;
 396             }
 397         }
 398     }
 399     return optind + 1;
 400 }
 401
 402 int main(int argc, char **argv)
 403 {
 404     int i;
 405     TCCState *s;
 406     int nb_objfiles, ret, optind;
 407     char objfilename[1024];
 408     int64_t start_time = 0;
 409
 410     s = tcc_new();
 411 #ifdef _WIN32
 412     tcc_set_lib_path_w32(s);
 413 #endif
 414     output_type = TCC_OUTPUT_EXE;
 415     outfile = NULL;
 416     multiple_files = 1;
 417     files = NULL;
 418     nb_files = 0;
 419     nb_libraries = 0;
 420     reloc_output = 0;
 421     print_search_dirs = 0;
 422     ret = 0;
 423
 424     optind = parse_args(s, argc - 1, argv + 1);
 425     if (print_search_dirs) {
 426         /* enough for Linux kernel */
 427         printf("install: %s/\n", tcc_lib_path);
 428         return 0;
 429     }
 430     if (optind == 0 || nb_files == 0) {
 431         if (optind && verbose)
 432             return 0;
 433         help();
 434         return 1;
 435     }
 436
 437     nb_objfiles = nb_files - nb_libraries;
 438
 439     /* if outfile provided without other options, we output an
 440        executable */
 441     if (outfile && output_type == TCC_OUTPUT_MEMORY)
 442         output_type = TCC_OUTPUT_EXE;
 443
 444     /* check -c consistency : only single file handled. XXX: checks file type */
 445     if (output_type == TCC_OUTPUT_OBJ && !reloc_output) {
 446         /* accepts only a single input file */
 447         if (nb_objfiles != 1)
 448             error("cannot specify multiple files with -c");
 449         if (nb_libraries != 0)
 450             error("cannot specify libraries with -c");
 451     }
 452
 453
 454     if (output_type == TCC_OUTPUT_PREPROCESS) {
 455         if (!outfile) {
 456             s->outfile = stdout;
 457         } else {
 458             s->outfile = fopen(outfile, "w");
 459             if (!s->outfile)
 460                 error("could not open '%s", outfile);
 461         }
 462     } else if (output_type != TCC_OUTPUT_MEMORY) {
 463         if (!outfile) {
 464             /* compute default outfile name */
 465             char *ext;
 466             const char *name =
 467                 strcmp(files[0], "-") == 0 ? "a" : tcc_basename(files[0]);
 468             pstrcpy(objfilename, sizeof(objfilename), name);
 469             ext = tcc_fileextension(objfilename);
 470 #ifdef TCC_TARGET_PE
 471             if (output_type == TCC_OUTPUT_DLL)
 472                 strcpy(ext, ".dll");
 473             else
 474             if (output_type == TCC_OUTPUT_EXE)
 475                 strcpy(ext, ".exe");
 476             else
 477 #endif
 478             if (output_type == TCC_OUTPUT_OBJ && !reloc_output && *ext)
 479                 strcpy(ext, ".o");
 480             else
 481                 pstrcpy(objfilename, sizeof(objfilename), "a.out");
 482             outfile = objfilename;
 483         }
 484     }
 485
 486     if (do_bench) {
 487         start_time = getclock_us();
 488     }
 489
 490     tcc_set_output_type(s, output_type);
 491
 492     /* compile or add each files or library */
 493     for(i = 0; i < nb_files && ret == 0; i++) {
 494         const char *filename;
 495
 496         filename = files[i];
 497         if (output_type == TCC_OUTPUT_PREPROCESS) {
 498             if (tcc_add_file_internal(s, filename,
 499                     AFF_PRINT_ERROR | AFF_PREPROCESS) < 0)
 500                 ret = 1;
 501         } else if (filename[0] == '-' && filename[1]) {
 502             if (tcc_add_library(s, filename + 2) < 0)
 503                 error("cannot find %s", filename);
 504         } else {
 505             if (1 == verbose)
 506                 printf("-> %s\n", filename);
 507             if (tcc_add_file(s, filename) < 0)
 508                 ret = 1;
 509         }
 510     }
 511
 512     /* free all files */
 513     tcc_free(files);
 514
 515     if (ret)
 516         goto the_end;
 517
 518     if (do_bench) {
 519         double total_time;
 520         total_time = (double)(getclock_us() - start_time) / 1000000.0;
 521         if (total_time < 0.001)
 522             total_time = 0.001;
 523         if (total_bytes < 1)
 524             total_bytes = 1;
 525         printf("%d idents, %d lines, %d bytes, %0.3f s, %d lines/s, %0.1f MB/s\n",
 526                tok_ident - TOK_IDENT, total_lines, total_bytes,
 527                total_time, (int)(total_lines / total_time),
 528                total_bytes / total_time / 1000000.0);
 529     }
 530
 531     if (s->output_type == TCC_OUTPUT_PREPROCESS) {
 532         if (outfile)
 533             fclose(s->outfile);
 534     } else if (s->output_type == TCC_OUTPUT_MEMORY) {
 535         ret = tcc_run(s, argc - optind, argv + optind);
 536     } else
 537         ret = tcc_output_file(s, outfile) ? 1 : 0;
 538  the_end:
 539     /* XXX: cannot do it with bound checking because of the malloc hooks */
 540     if (!do_bounds_check)
 541         tcc_delete(s);
 542
 543 #ifdef MEM_DEBUG
 544     if (do_bench) {
 545         printf("memory: %d bytes, max = %d bytes\n", mem_cur_size, mem_max_size);
 546     }
 547 #endif
 548     return ret;
 549 }
 550
 551 #endif