tcctools.c

   1 /* -------------------------------------------------------------- */
   2 /*
   3  *  TCC - Tiny C Compiler
   4  *
   5  *  tcctools.c - extra tools and and -m32/64 support
   6  *
   7  */
   8
   9 /* -------------------------------------------------------------- */
  10 /*
  11  * This program is for making libtcc1.a without ar
  12  * tiny_libmaker - tiny elf lib maker
  13  * usage: tiny_libmaker [lib] files...
  14  * Copyright (c) 2007 Timppa
  15  *
  16  * This library is free software; you can redistribute it and/or
  17  * modify it under the terms of the GNU Lesser General Public
  18  * License as published by the Free Software Foundation; either
  19  * version 2 of the License, or (at your option) any later version.
  20  *
  21  * This library is distributed in the hope that it will be useful,
  22  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  23  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  24  * Lesser General Public License for more details.
  25  *
  26  * You should have received a copy of the GNU Lesser General Public
  27  * License along with this library; if not, write to the Free Software
  28  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
  29  */
  30
  31 #include "tcc.h"
  32
  33 //#define ARMAG  "!<arch>\n"
  34 #define ARFMAG "`\n"
  35
  36 typedef struct {
  37     char ar_name[16];
  38     char ar_date[12];
  39     char ar_uid[6];
  40     char ar_gid[6];
  41     char ar_mode[8];
  42     char ar_size[10];
  43     char ar_fmag[2];
  44 } ArHdr;
  45
  46 static unsigned long le2belong(unsigned long ul) {
  47     return ((ul & 0xFF0000)>>8)+((ul & 0xFF000000)>>24) +
  48         ((ul & 0xFF)<<24)+((ul & 0xFF00)<<8);
  49 }
  50
  51 /* Returns 1 if s contains any of the chars of list, else 0 */
  52 static int contains_any(const char *s, const char *list) {
  53   const char *l;
  54   for (; *s; s++) {
  55       for (l = list; *l; l++) {
  56           if (*s == *l)
  57               return 1;
  58       }
  59   }
  60   return 0;
  61 }
  62
  63 static int ar_usage(int ret) {
  64     fprintf(stderr, "usage: tcc -ar [crstvx] lib [files]\n");
  65     fprintf(stderr, "create library ([abdiopN] not supported).\n");
  66     return ret;
  67 }
  68
  69 ST_FUNC int tcc_tool_ar(TCCState *s1, int argc, char **argv)
  70 {
  71     static const ArHdr arhdr_init = {
  72         "/               ",
  73         "0           ",
  74         "0     ",
  75         "0     ",
  76         "0       ",
  77         "0         ",
  78         ARFMAG
  79         };
  80
  81     ArHdr arhdr = arhdr_init;
  82     ArHdr arhdro = arhdr_init;
  83
  84     FILE *fi, *fh = NULL, *fo = NULL;
  85     ElfW(Ehdr) *ehdr;
  86     ElfW(Shdr) *shdr;
  87     ElfW(Sym) *sym;
  88     int i, fsize, i_lib, i_obj;
  89     char *buf, *shstr, *symtab = NULL, *strtab = NULL;
  90     int symtabsize = 0;//, strtabsize = 0;
  91     char *anames = NULL;
  92     int *afpos = NULL;
  93     int istrlen, strpos = 0, fpos = 0, funccnt = 0, funcmax, hofs;
  94     char tfile[260], stmp[20];
  95     char *file, *name;
  96     int ret = 2;
  97     const char *ops_conflict = "habdiopN";  // unsupported but destructive if ignored.
  98     int extract = 0;
  99     int table = 0;
 100     int verbose = 0;
 101
 102     i_lib = 0; i_obj = 0;  // will hold the index of the lib and first obj
 103     for (i = 1; i < argc; i++) {
 104         const char *a = argv[i];
 105         if (*a == '-' && strstr(a, "."))
 106             ret = 1; // -x.y is always invalid (same as gnu ar)
 107         if ((*a == '-') || (i == 1 && !strstr(a, "."))) {  // options argument
 108             if (contains_any(a, ops_conflict))
 109                 ret = 1;
 110             if (strstr(a, "x"))
 111                 extract = 1;
 112             if (strstr(a, "t"))
 113                 table = 1;
 114             if (strstr(a, "v"))
 115                 verbose = 1;
 116         } else {  // lib or obj files: don't abort - keep validating all args.
 117             if (!i_lib)  // first file is the lib
 118                 i_lib = i;
 119             else if (!i_obj)  // second file is the first obj
 120                 i_obj = i;
 121         }
 122     }
 123
 124     if (!i_lib)  // i_obj implies also i_lib.
 125         ret = 1;
 126     i_obj = i_obj ? i_obj : argc;  // An empty archive will be generated if no input file is given
 127
 128     if (ret == 1)
 129         return ar_usage(ret);
 130
 131     if (extract || table) {
 132         if ((fh = fopen(argv[i_lib], "rb")) == NULL)
 133         {
 134             fprintf(stderr, "tcc: ar: can't open file %s\n", argv[i_lib]);
 135             goto finish;
 136         }
 137         fread(stmp, 1, 8, fh);
 138         if (memcmp(stmp,ARMAG,8))
 139         {
 140 no_ar:
 141             fprintf(stderr, "tcc: ar: not an ar archive %s\n", argv[i_lib]);
 142             goto finish;
 143         }
 144         while (fread(&arhdr, 1, sizeof(arhdr), fh) == sizeof(arhdr)) {
 145             char *p, *e;
 146
 147             if (memcmp(arhdr.ar_fmag, ARFMAG, 2))
 148                 goto no_ar;
 149             p = arhdr.ar_name;
 150             for (e = p + sizeof arhdr.ar_name; e > p && e[-1] == ' ';)
 151                 e--;
 152             *e = '\0';
 153             arhdr.ar_size[sizeof arhdr.ar_size-1] = 0;
 154             fsize = atoi(arhdr.ar_size);
 155             buf = tcc_malloc(fsize + 1);
 156             fread(buf, fsize, 1, fh);
 157             if (strcmp(arhdr.ar_name,"/") && strcmp(arhdr.ar_name,"/SYM64/")) {
 158                 if (e > p && e[-1] == '/')
 159                     e[-1] = '\0';
 160                 /* tv not implemented */
 161                 if (table || verbose)
 162                     printf("%s%s\n", extract ? "x - " : "", arhdr.ar_name);
 163                 if (extract) {
 164                     if ((fo = fopen(arhdr.ar_name, "wb")) == NULL)
 165                     {
 166                         fprintf(stderr, "tcc: ar: can't create file %s\n",
 167                                 arhdr.ar_name);
 168                         tcc_free(buf);
 169                         goto finish;
 170                     }
 171                     fwrite(buf, fsize, 1, fo);
 172                     fclose(fo);
 173                     /* ignore date/uid/gid/mode */
 174                 }
 175             }
 176             tcc_free(buf);
 177         }
 178         ret = 0;
 179 finish:
 180         if (fh)
 181                 fclose(fh);
 182         return ret;
 183     }
 184
 185     if ((fh = fopen(argv[i_lib], "wb")) == NULL)
 186     {
 187         fprintf(stderr, "tcc: ar: can't create file %s\n", argv[i_lib]);
 188         goto the_end;
 189     }
 190
 191     sprintf(tfile, "%s.tmp", argv[i_lib]);
 192     if ((fo = fopen(tfile, "wb+")) == NULL)
 193     {
 194         fprintf(stderr, "tcc: ar: can't create temporary file %s\n", tfile);
 195         goto the_end;
 196     }
 197
 198     funcmax = 250;
 199     afpos = tcc_realloc(NULL, funcmax * sizeof *afpos); // 250 func
 200     memcpy(&arhdro.ar_mode, "100644", 6);
 201
 202     // i_obj = first input object file
 203     while (i_obj < argc)
 204     {
 205         if (*argv[i_obj] == '-') {  // by now, all options start with '-'
 206             i_obj++;
 207             continue;
 208         }
 209         if ((fi = fopen(argv[i_obj], "rb")) == NULL) {
 210             fprintf(stderr, "tcc: ar: can't open file %s \n", argv[i_obj]);
 211             goto the_end;
 212         }
 213         if (verbose)
 214             printf("a - %s\n", argv[i_obj]);
 215
 216         fseek(fi, 0, SEEK_END);
 217         fsize = ftell(fi);
 218         fseek(fi, 0, SEEK_SET);
 219         buf = tcc_malloc(fsize + 1);
 220         fread(buf, fsize, 1, fi);
 221         fclose(fi);
 222
 223         // elf header
 224         ehdr = (ElfW(Ehdr) *)buf;
 225         if (ehdr->e_ident[4] != ELFCLASSW)
 226         {
 227             fprintf(stderr, "tcc: ar: Unsupported Elf Class: %s\n", argv[i_obj]);
 228             goto the_end;
 229         }
 230
 231         shdr = (ElfW(Shdr) *) (buf + ehdr->e_shoff + ehdr->e_shstrndx * ehdr->e_shentsize);
 232         shstr = (char *)(buf + shdr->sh_offset);
 233         for (i = 0; i < ehdr->e_shnum; i++)
 234         {
 235             shdr = (ElfW(Shdr) *) (buf + ehdr->e_shoff + i * ehdr->e_shentsize);
 236             if (!shdr->sh_offset)
 237                 continue;
 238             if (shdr->sh_type == SHT_SYMTAB)
 239             {
 240                 symtab = (char *)(buf + shdr->sh_offset);
 241                 symtabsize = shdr->sh_size;
 242             }
 243             if (shdr->sh_type == SHT_STRTAB)
 244             {
 245                 if (!strcmp(shstr + shdr->sh_name, ".strtab"))
 246                 {
 247                     strtab = (char *)(buf + shdr->sh_offset);
 248                     //strtabsize = shdr->sh_size;
 249                 }
 250             }
 251         }
 252
 253         if (symtab && symtabsize)
 254         {
 255             int nsym = symtabsize / sizeof(ElfW(Sym));
 256             //printf("symtab: info size shndx name\n");
 257             for (i = 1; i < nsym; i++)
 258             {
 259                 sym = (ElfW(Sym) *) (symtab + i * sizeof(ElfW(Sym)));
 260                 if (sym->st_shndx &&
 261                     (sym->st_info == 0x10
 262                     || sym->st_info == 0x11
 263                     || sym->st_info == 0x12
 264                     || sym->st_info == 0x20
 265                     || sym->st_info == 0x21
 266                     || sym->st_info == 0x22
 267                     )) {
 268                     //printf("symtab: %2Xh %4Xh %2Xh %s\n", sym->st_info, sym->st_size, sym->st_shndx, strtab + sym->st_name);
 269                     istrlen = strlen(strtab + sym->st_name)+1;
 270                     anames = tcc_realloc(anames, strpos+istrlen);
 271                     strcpy(anames + strpos, strtab + sym->st_name);
 272                     strpos += istrlen;
 273                     if (++funccnt >= funcmax) {
 274                         funcmax += 250;
 275                         afpos = tcc_realloc(afpos, funcmax * sizeof *afpos); // 250 func more
 276                     }
 277                     afpos[funccnt] = fpos;
 278                 }
 279             }
 280         }
 281
 282         file = argv[i_obj];
 283         for (name = strchr(file, 0);
 284              name > file && name[-1] != '/' && name[-1] != '\\';
 285              --name);
 286         istrlen = strlen(name);
 287         if (istrlen >= sizeof(arhdro.ar_name))
 288             istrlen = sizeof(arhdro.ar_name) - 1;
 289         memset(arhdro.ar_name, ' ', sizeof(arhdro.ar_name));
 290         memcpy(arhdro.ar_name, name, istrlen);
 291         arhdro.ar_name[istrlen] = '/';
 292         sprintf(stmp, "%-10d", fsize);
 293         memcpy(&arhdro.ar_size, stmp, 10);
 294         fwrite(&arhdro, sizeof(arhdro), 1, fo);
 295         fwrite(buf, fsize, 1, fo);
 296         tcc_free(buf);
 297         i_obj++;
 298         fpos += (fsize + sizeof(arhdro));
 299     }
 300     hofs = 8 + sizeof(arhdr) + strpos + (funccnt+1) * sizeof(int);
 301     fpos = 0;
 302     if ((hofs & 1)) // align
 303         hofs++, fpos = 1;
 304     // write header
 305     fwrite(ARMAG, 8, 1, fh);
 306     // create an empty archive
 307     if (!funccnt) {
 308         ret = 0;
 309         goto the_end;
 310     }
 311     sprintf(stmp, "%-10d", (int)(strpos + (funccnt+1) * sizeof(int)) + fpos);
 312     memcpy(&arhdr.ar_size, stmp, 10);
 313     fwrite(&arhdr, sizeof(arhdr), 1, fh);
 314     afpos[0] = le2belong(funccnt);
 315     for (i=1; i<=funccnt; i++)
 316         afpos[i] = le2belong(afpos[i] + hofs);
 317     fwrite(afpos, (funccnt+1) * sizeof(int), 1, fh);
 318     fwrite(anames, strpos, 1, fh);
 319     if (fpos)
 320         fwrite("", 1, 1, fh);
 321     // write objects
 322     fseek(fo, 0, SEEK_END);
 323     fsize = ftell(fo);
 324     fseek(fo, 0, SEEK_SET);
 325     buf = tcc_malloc(fsize + 1);
 326     fread(buf, fsize, 1, fo);
 327     fwrite(buf, fsize, 1, fh);
 328     tcc_free(buf);
 329     ret = 0;
 330 the_end:
 331     if (anames)
 332         tcc_free(anames);
 333     if (afpos)
 334         tcc_free(afpos);
 335     if (fh)
 336         fclose(fh);
 337     if (fo)
 338         fclose(fo), remove(tfile);
 339     return ret;
 340 }
 341
 342 /* -------------------------------------------------------------- */
 343 /*
 344  * tiny_impdef creates an export definition file (.def) from a dll
 345  * on MS-Windows. Usage: tiny_impdef library.dll [-o outputfile]"
 346  *
 347  *  Copyright (c) 2005,2007 grischka
 348  *
 349  * This program is free software; you can redistribute it and/or modify
 350  * it under the terms of the GNU General Public License as published by
 351  * the Free Software Foundation; either version 2 of the License, or
 352  * (at your option) any later version.
 353  *
 354  * This program is distributed in the hope that it will be useful,
 355  * but WITHOUT ANY WARRANTY; without even the implied warranty of
 356  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 357  * GNU General Public License for more details.
 358  *
 359  * You should have received a copy of the GNU General Public License
 360  * along with this program; if not, write to the Free Software
 361  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 362  */
 363
 364 #ifdef TCC_TARGET_PE
 365
 366 ST_FUNC int tcc_tool_impdef(TCCState *s1, int argc, char **argv)
 367 {
 368     int ret, v, i;
 369     char infile[260];
 370     char outfile[260];
 371
 372     const char *file;
 373     char *p, *q;
 374     FILE *fp, *op;
 375
 376 #ifdef _WIN32
 377     char path[260];
 378 #endif
 379
 380     infile[0] = outfile[0] = 0;
 381     fp = op = NULL;
 382     ret = 1;
 383     p = NULL;
 384     v = 0;
 385
 386     for (i = 1; i < argc; ++i) {
 387         const char *a = argv[i];
 388         if ('-' == a[0]) {
 389             if (0 == strcmp(a, "-v")) {
 390                 v = 1;
 391             } else if (0 == strcmp(a, "-o")) {
 392                 if (++i == argc)
 393                     goto usage;
 394                 strcpy(outfile, argv[i]);
 395             } else
 396                 goto usage;
 397         } else if (0 == infile[0])
 398             strcpy(infile, a);
 399         else
 400             goto usage;
 401     }
 402
 403     if (0 == infile[0]) {
 404 usage:
 405         fprintf(stderr,
 406             "usage: tcc -impdef library.dll [-v] [-o outputfile]\n"
 407             "create export definition file (.def) from dll\n"
 408             );
 409         goto the_end;
 410     }
 411
 412     if (0 == outfile[0]) {
 413         strcpy(outfile, tcc_basename(infile));
 414         q = strrchr(outfile, '.');
 415         if (NULL == q)
 416             q = strchr(outfile, 0);
 417         strcpy(q, ".def");
 418     }
 419
 420     file = infile;
 421 #ifdef _WIN32
 422     if (SearchPath(NULL, file, ".dll", sizeof path, path, NULL))
 423         file = path;
 424 #endif
 425     ret = tcc_get_dllexports(file, &p);
 426     if (ret || !p) {
 427         fprintf(stderr, "tcc: impdef: %s '%s'\n",
 428             ret == -1 ? "can't find file" :
 429             ret ==  1 ? "can't read symbols" :
 430             ret ==  0 ? "no symbols found in" :
 431             "unknown file type", file);
 432         ret = 1;
 433         goto the_end;
 434     }
 435
 436     if (v)
 437         printf("-> %s\n", file);
 438
 439     op = fopen(outfile, "wb");
 440     if (NULL == op) {
 441         fprintf(stderr, "tcc: impdef: could not create output file: %s\n", outfile);
 442         goto the_end;
 443     }
 444
 445     fprintf(op, "LIBRARY %s\n\nEXPORTS\n", tcc_basename(file));
 446     for (q = p, i = 0; *q; ++i) {
 447         fprintf(op, "%s\n", q);
 448         q += strlen(q) + 1;
 449     }
 450
 451     if (v)
 452         printf("<- %s (%d symbol%s)\n", outfile, i, &"s"[i<2]);
 453
 454     ret = 0;
 455
 456 the_end:
 457     if (p)
 458         tcc_free(p);
 459     if (fp)
 460         fclose(fp);
 461     if (op)
 462         fclose(op);
 463     return ret;
 464 }
 465
 466 #endif /* TCC_TARGET_PE */
 467
 468 /* -------------------------------------------------------------- */
 469 /*
 470  *  TCC - Tiny C Compiler
 471  *
 472  *  Copyright (c) 2001-2004 Fabrice Bellard
 473  *
 474  * This library is free software; you can redistribute it and/or
 475  * modify it under the terms of the GNU Lesser General Public
 476  * License as published by the Free Software Foundation; either
 477  * version 2 of the License, or (at your option) any later version.
 478  *
 479  * This library is distributed in the hope that it will be useful,
 480  * but WITHOUT ANY WARRANTY; without even the implied warranty of
 481  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 482  * Lesser General Public License for more details.
 483  *
 484  * You should have received a copy of the GNU Lesser General Public
 485  * License along with this library; if not, write to the Free Software
 486  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 487  */
 488
 489 /* re-execute the i386/x86_64 cross-compilers with tcc -m32/-m64: */
 490
 491 #if !defined TCC_TARGET_I386 && !defined TCC_TARGET_X86_64
 492
 493 ST_FUNC void tcc_tool_cross(TCCState *s1, char **argv, int option)
 494 {
 495     tcc_error("-m%d not implemented.", option);
 496 }
 497
 498 #else
 499 #ifdef _WIN32
 500 #include <process.h>
 501
 502 static char *str_replace(const char *str, const char *p, const char *r)
 503 {
 504     const char *s, *s0;
 505     char *d, *d0;
 506     int sl, pl, rl;
 507
 508     sl = strlen(str);
 509     pl = strlen(p);
 510     rl = strlen(r);
 511     for (d0 = NULL;; d0 = tcc_malloc(sl + 1)) {
 512         for (d = d0, s = str; s0 = s, s = strstr(s, p), s; s += pl) {
 513             if (d) {
 514                 memcpy(d, s0, sl = s - s0), d += sl;
 515                 memcpy(d, r, rl), d += rl;
 516             } else
 517                 sl += rl - pl;
 518         }
 519         if (d) {
 520             strcpy(d, s0);
 521             return d0;
 522         }
 523     }
 524 }
 525
 526 static int execvp_win32(const char *prog, char **argv)
 527 {
 528     int ret; char **p;
 529     /* replace all " by \" */
 530     for (p = argv; *p; ++p)
 531         if (strchr(*p, '"'))
 532             *p = str_replace(*p, "\"", "\\\"");
 533     ret = _spawnvp(P_NOWAIT, prog, (const char *const*)argv);
 534     if (-1 == ret)
 535         return ret;
 536     _cwait(&ret, ret, WAIT_CHILD);
 537     exit(ret);
 538 }
 539 #define execvp execvp_win32
 540 #endif /* _WIN32 */
 541
 542 ST_FUNC void tcc_tool_cross(TCCState *s1, char **argv, int target)
 543 {
 544     char program[4096];
 545     char *a0 = argv[0];
 546     int prefix = tcc_basename(a0) - a0;
 547
 548     snprintf(program, sizeof program,
 549         "%.*s%s"
 550 #ifdef TCC_TARGET_PE
 551         "-win32"
 552 #endif
 553         "-tcc"
 554 #ifdef _WIN32
 555         ".exe"
 556 #endif
 557         , prefix, a0, target == 64 ? "x86_64" : "i386");
 558
 559     if (strcmp(a0, program))
 560         execvp(argv[0] = program, argv);
 561     tcc_error("could not run '%s'", program);
 562 }
 563
 564 #endif /* TCC_TARGET_I386 && TCC_TARGET_X86_64 */
 565 /* -------------------------------------------------------------- */
 566 /* enable commandline wildcard expansion (tcc -o x.exe *.c) */
 567
 568 #ifdef _WIN32
 569 const int _CRT_glob = 1;
 570 #ifndef _CRT_glob
 571 const int _dowildcard = 1;
 572 #endif
 573 #endif
 574
 575 /* -------------------------------------------------------------- */
 576 /* generate xxx.d file */
 577
 578 static char *escape_target_dep(const char *s) {
 579     char *res = tcc_malloc(strlen(s) * 2 + 1);
 580     int j;
 581     for (j = 0; *s; s++, j++) {
 582         if (is_space(*s)) {
 583             res[j++] = '\\';
 584         }
 585         res[j] = *s;
 586     }
 587     res[j] = '\0';
 588     return res;
 589 }
 590
 591 ST_FUNC void gen_makedeps(TCCState *s1, const char *target, const char *filename)
 592 {
 593     FILE *depout;
 594     char buf[1024], *escaped_target;
 595     int i, k;
 596
 597     if (!filename) {
 598         /* compute filename automatically: dir/file.o -> dir/file.d */
 599         snprintf(buf, sizeof buf, "%.*s.d",
 600             (int)(tcc_fileextension(target) - target), target);
 601         filename = buf;
 602     }
 603
 604     if (s1->verbose)
 605         printf("<- %s\n", filename);
 606
 607     if(!strcmp(filename, "-"))
 608         depout = fdopen(1, "w");
 609     else
 610         /* XXX return err codes instead of error() ? */
 611         depout = fopen(filename, "w");
 612     if (!depout)
 613         tcc_error("could not open '%s'", filename);
 614     fprintf(depout, "%s:", target);
 615     for (i = 0; i<s1->nb_target_deps; ++i) {
 616         for (k = 0; k < i; ++k)
 617             if (0 == strcmp(s1->target_deps[i], s1->target_deps[k]))
 618                 goto next;
 619         escaped_target = escape_target_dep(s1->target_deps[i]);
 620         fprintf(depout, " \\\n  %s", escaped_target);
 621         tcc_free(escaped_target);
 622     next:;
 623     }
 624     fprintf(depout, "\n");
 625     fclose(depout);
 626 }
 627
 628 /* -------------------------------------------------------------- */