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 [rcsv] lib [file...]\n");
  65     fprintf(stderr, "create library ([abdioptxN] 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         "            ",
  74         "0     ",
  75         "0     ",
  76         "0       ",
  77         "          ",
  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 = "habdioptxN";  // unsupported but destructive if ignored.
  98     int verbose = 0;
  99
 100     i_lib = 0; i_obj = 0;  // will hold the index of the lib and first obj
 101     for (i = 1; i < argc; i++) {
 102         const char *a = argv[i];
 103         if (*a == '-' && strstr(a, "."))
 104             ret = 1; // -x.y is always invalid (same as gnu ar)
 105         if ((*a == '-') || (i == 1 && !strstr(a, "."))) {  // options argument
 106             if (contains_any(a, ops_conflict))
 107                 ret = 1;
 108             if (strstr(a, "v"))
 109                 verbose = 1;
 110         } else {  // lib or obj files: don't abort - keep validating all args.
 111             if (!i_lib)  // first file is the lib
 112                 i_lib = i;
 113             else if (!i_obj)  // second file is the first obj
 114                 i_obj = i;
 115         }
 116     }
 117
 118     if (!i_lib)  // i_obj implies also i_lib.
 119         ret = 1;
 120     i_obj = i_obj ? i_obj : argc;  // An empty archive will be generated if no input file is given
 121
 122     if (ret == 1)
 123         return ar_usage(ret);
 124
 125     if ((fh = fopen(argv[i_lib], "wb")) == NULL)
 126     {
 127         fprintf(stderr, "tcc: ar: can't open file %s \n", argv[i_lib]);
 128         goto the_end;
 129     }
 130
 131     sprintf(tfile, "%s.tmp", argv[i_lib]);
 132     if ((fo = fopen(tfile, "wb+")) == NULL)
 133     {
 134         fprintf(stderr, "tcc: ar: can't create temporary file %s\n", tfile);
 135         goto the_end;
 136     }
 137
 138     funcmax = 250;
 139     afpos = tcc_realloc(NULL, funcmax * sizeof *afpos); // 250 func
 140     memcpy(&arhdro.ar_mode, "100666", 6);
 141
 142     // i_obj = first input object file
 143     while (i_obj < argc)
 144     {
 145         if (*argv[i_obj] == '-') {  // by now, all options start with '-'
 146             i_obj++;
 147             continue;
 148         }
 149         if ((fi = fopen(argv[i_obj], "rb")) == NULL) {
 150             fprintf(stderr, "tcc: ar: can't open file %s \n", argv[i_obj]);
 151             goto the_end;
 152         }
 153         if (verbose)
 154             printf("a - %s\n", argv[i_obj]);
 155
 156         fseek(fi, 0, SEEK_END);
 157         fsize = ftell(fi);
 158         fseek(fi, 0, SEEK_SET);
 159         buf = tcc_malloc(fsize + 1);
 160         fread(buf, fsize, 1, fi);
 161         fclose(fi);
 162
 163         // elf header
 164         ehdr = (ElfW(Ehdr) *)buf;
 165         if (ehdr->e_ident[4] != ELFCLASSW)
 166         {
 167             fprintf(stderr, "tcc: ar: Unsupported Elf Class: %s\n", argv[i_obj]);
 168             goto the_end;
 169         }
 170
 171         shdr = (ElfW(Shdr) *) (buf + ehdr->e_shoff + ehdr->e_shstrndx * ehdr->e_shentsize);
 172         shstr = (char *)(buf + shdr->sh_offset);
 173         for (i = 0; i < ehdr->e_shnum; i++)
 174         {
 175             shdr = (ElfW(Shdr) *) (buf + ehdr->e_shoff + i * ehdr->e_shentsize);
 176             if (!shdr->sh_offset)
 177                 continue;
 178             if (shdr->sh_type == SHT_SYMTAB)
 179             {
 180                 symtab = (char *)(buf + shdr->sh_offset);
 181                 symtabsize = shdr->sh_size;
 182             }
 183             if (shdr->sh_type == SHT_STRTAB)
 184             {
 185                 if (!strcmp(shstr + shdr->sh_name, ".strtab"))
 186                 {
 187                     strtab = (char *)(buf + shdr->sh_offset);
 188                     //strtabsize = shdr->sh_size;
 189                 }
 190             }
 191         }
 192
 193         if (symtab && symtabsize)
 194         {
 195             int nsym = symtabsize / sizeof(ElfW(Sym));
 196             //printf("symtab: info size shndx name\n");
 197             for (i = 1; i < nsym; i++)
 198             {
 199                 sym = (ElfW(Sym) *) (symtab + i * sizeof(ElfW(Sym)));
 200                 if (sym->st_shndx &&
 201                     (sym->st_info == 0x10
 202                     || sym->st_info == 0x11
 203                     || sym->st_info == 0x12
 204                     || sym->st_info == 0x20
 205                     || sym->st_info == 0x21
 206                     || sym->st_info == 0x22
 207                     )) {
 208                     //printf("symtab: %2Xh %4Xh %2Xh %s\n", sym->st_info, sym->st_size, sym->st_shndx, strtab + sym->st_name);
 209                     istrlen = strlen(strtab + sym->st_name)+1;
 210                     anames = tcc_realloc(anames, strpos+istrlen);
 211                     strcpy(anames + strpos, strtab + sym->st_name);
 212                     strpos += istrlen;
 213                     if (++funccnt >= funcmax) {
 214                         funcmax += 250;
 215                         afpos = tcc_realloc(afpos, funcmax * sizeof *afpos); // 250 func more
 216                     }
 217                     afpos[funccnt] = fpos;
 218                 }
 219             }
 220         }
 221
 222         file = argv[i_obj];
 223         for (name = strchr(file, 0);
 224              name > file && name[-1] != '/' && name[-1] != '\\';
 225              --name);
 226         istrlen = strlen(name);
 227         if (istrlen >= sizeof(arhdro.ar_name))
 228             istrlen = sizeof(arhdro.ar_name) - 1;
 229         memset(arhdro.ar_name, ' ', sizeof(arhdro.ar_name));
 230         memcpy(arhdro.ar_name, name, istrlen);
 231         arhdro.ar_name[istrlen] = '/';
 232         sprintf(stmp, "%-10d", fsize);
 233         memcpy(&arhdro.ar_size, stmp, 10);
 234         fwrite(&arhdro, sizeof(arhdro), 1, fo);
 235         fwrite(buf, fsize, 1, fo);
 236         tcc_free(buf);
 237         i_obj++;
 238         fpos += (fsize + sizeof(arhdro));
 239     }
 240     hofs = 8 + sizeof(arhdr) + strpos + (funccnt+1) * sizeof(int);
 241     fpos = 0;
 242     if ((hofs & 1)) // align
 243         hofs++, fpos = 1;
 244     // write header
 245     fwrite("!<arch>\n", 8, 1, fh);
 246     // create an empty archive
 247     if (!funccnt) {
 248         ret = 0;
 249         goto the_end;
 250     }
 251     sprintf(stmp, "%-10d", (int)(strpos + (funccnt+1) * sizeof(int)));
 252     memcpy(&arhdr.ar_size, stmp, 10);
 253     fwrite(&arhdr, sizeof(arhdr), 1, fh);
 254     afpos[0] = le2belong(funccnt);
 255     for (i=1; i<=funccnt; i++)
 256         afpos[i] = le2belong(afpos[i] + hofs);
 257     fwrite(afpos, (funccnt+1) * sizeof(int), 1, fh);
 258     fwrite(anames, strpos, 1, fh);
 259     if (fpos)
 260         fwrite("", 1, 1, fh);
 261     // write objects
 262     fseek(fo, 0, SEEK_END);
 263     fsize = ftell(fo);
 264     fseek(fo, 0, SEEK_SET);
 265     buf = tcc_malloc(fsize + 1);
 266     fread(buf, fsize, 1, fo);
 267     fwrite(buf, fsize, 1, fh);
 268     tcc_free(buf);
 269     ret = 0;
 270 the_end:
 271     if (anames)
 272         tcc_free(anames);
 273     if (afpos)
 274         tcc_free(afpos);
 275     if (fh)
 276         fclose(fh);
 277     if (fo)
 278         fclose(fo), remove(tfile);
 279     return ret;
 280 }
 281
 282 /* -------------------------------------------------------------- */
 283 /*
 284  * tiny_impdef creates an export definition file (.def) from a dll
 285  * on MS-Windows. Usage: tiny_impdef library.dll [-o outputfile]"
 286  *
 287  *  Copyright (c) 2005,2007 grischka
 288  *
 289  * This program is free software; you can redistribute it and/or modify
 290  * it under the terms of the GNU General Public License as published by
 291  * the Free Software Foundation; either version 2 of the License, or
 292  * (at your option) any later version.
 293  *
 294  * This program is distributed in the hope that it will be useful,
 295  * but WITHOUT ANY WARRANTY; without even the implied warranty of
 296  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 297  * GNU General Public License for more details.
 298  *
 299  * You should have received a copy of the GNU General Public License
 300  * along with this program; if not, write to the Free Software
 301  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 302  */
 303
 304 #ifdef TCC_TARGET_PE
 305
 306 ST_FUNC int tcc_tool_impdef(TCCState *s1, int argc, char **argv)
 307 {
 308     int ret, v, i;
 309     char infile[260];
 310     char outfile[260];
 311
 312     const char *file;
 313     char *p, *q;
 314     FILE *fp, *op;
 315
 316 #ifdef _WIN32
 317     char path[260];
 318 #endif
 319
 320     infile[0] = outfile[0] = 0;
 321     fp = op = NULL;
 322     ret = 1;
 323     p = NULL;
 324     v = 0;
 325
 326     for (i = 1; i < argc; ++i) {
 327         const char *a = argv[i];
 328         if ('-' == a[0]) {
 329             if (0 == strcmp(a, "-v")) {
 330                 v = 1;
 331             } else if (0 == strcmp(a, "-o")) {
 332                 if (++i == argc)
 333                     goto usage;
 334                 strcpy(outfile, argv[i]);
 335             } else
 336                 goto usage;
 337         } else if (0 == infile[0])
 338             strcpy(infile, a);
 339         else
 340             goto usage;
 341     }
 342
 343     if (0 == infile[0]) {
 344 usage:
 345         fprintf(stderr,
 346             "usage: tcc -impdef library.dll [-v] [-o outputfile]\n"
 347             "create export definition file (.def) from dll\n"
 348             );
 349         goto the_end;
 350     }
 351
 352     if (0 == outfile[0]) {
 353         strcpy(outfile, tcc_basename(infile));
 354         q = strrchr(outfile, '.');
 355         if (NULL == q)
 356             q = strchr(outfile, 0);
 357         strcpy(q, ".def");
 358     }
 359
 360     file = infile;
 361 #ifdef _WIN32
 362     if (SearchPath(NULL, file, ".dll", sizeof path, path, NULL))
 363         file = path;
 364 #endif
 365     ret = tcc_get_dllexports(file, &p);
 366     if (ret || !p) {
 367         fprintf(stderr, "tcc: impdef: %s '%s'\n",
 368             ret == -1 ? "can't find file" :
 369             ret ==  1 ? "can't read symbols" :
 370             ret ==  0 ? "no symbols found in" :
 371             "unknown file type", file);
 372         ret = 1;
 373         goto the_end;
 374     }
 375
 376     if (v)
 377         printf("-> %s\n", file);
 378
 379     op = fopen(outfile, "wb");
 380     if (NULL == op) {
 381         fprintf(stderr, "tcc: impdef: could not create output file: %s\n", outfile);
 382         goto the_end;
 383     }
 384
 385     fprintf(op, "LIBRARY %s\n\nEXPORTS\n", tcc_basename(file));
 386     for (q = p, i = 0; *q; ++i) {
 387         fprintf(op, "%s\n", q);
 388         q += strlen(q) + 1;
 389     }
 390
 391     if (v)
 392         printf("<- %s (%d symbol%s)\n", outfile, i, &"s"[i<2]);
 393
 394     ret = 0;
 395
 396 the_end:
 397     if (p)
 398         tcc_free(p);
 399     if (fp)
 400         fclose(fp);
 401     if (op)
 402         fclose(op);
 403     return ret;
 404 }
 405
 406 #endif /* TCC_TARGET_PE */
 407
 408 /* -------------------------------------------------------------- */
 409 /*
 410  *  TCC - Tiny C Compiler
 411  *
 412  *  Copyright (c) 2001-2004 Fabrice Bellard
 413  *
 414  * This library is free software; you can redistribute it and/or
 415  * modify it under the terms of the GNU Lesser General Public
 416  * License as published by the Free Software Foundation; either
 417  * version 2 of the License, or (at your option) any later version.
 418  *
 419  * This library is distributed in the hope that it will be useful,
 420  * but WITHOUT ANY WARRANTY; without even the implied warranty of
 421  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 422  * Lesser General Public License for more details.
 423  *
 424  * You should have received a copy of the GNU Lesser General Public
 425  * License along with this library; if not, write to the Free Software
 426  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 427  */
 428
 429 /* re-execute the i386/x86_64 cross-compilers with tcc -m32/-m64: */
 430
 431 #if !defined TCC_TARGET_I386 && !defined TCC_TARGET_X86_64
 432
 433 ST_FUNC void tcc_tool_cross(TCCState *s1, char **argv, int option)
 434 {
 435     tcc_error("-m%d not implemented.", option);
 436 }
 437
 438 #else
 439 #ifdef _WIN32
 440 #include <process.h>
 441
 442 static char *str_replace(const char *str, const char *p, const char *r)
 443 {
 444     const char *s, *s0;
 445     char *d, *d0;
 446     int sl, pl, rl;
 447
 448     sl = strlen(str);
 449     pl = strlen(p);
 450     rl = strlen(r);
 451     for (d0 = NULL;; d0 = tcc_malloc(sl + 1)) {
 452         for (d = d0, s = str; s0 = s, s = strstr(s, p), s; s += pl) {
 453             if (d) {
 454                 memcpy(d, s0, sl = s - s0), d += sl;
 455                 memcpy(d, r, rl), d += rl;
 456             } else
 457                 sl += rl - pl;
 458         }
 459         if (d) {
 460             strcpy(d, s0);
 461             return d0;
 462         }
 463     }
 464 }
 465
 466 static int execvp_win32(const char *prog, char **argv)
 467 {
 468     int ret; char **p;
 469     /* replace all " by \" */
 470     for (p = argv; *p; ++p)
 471         if (strchr(*p, '"'))
 472             *p = str_replace(*p, "\"", "\\\"");
 473     ret = _spawnvp(P_NOWAIT, prog, (const char *const*)argv);
 474     if (-1 == ret)
 475         return ret;
 476     _cwait(&ret, ret, WAIT_CHILD);
 477     exit(ret);
 478 }
 479 #define execvp execvp_win32
 480 #endif /* _WIN32 */
 481
 482 ST_FUNC void tcc_tool_cross(TCCState *s1, char **argv, int target)
 483 {
 484     char program[4096];
 485     char *a0 = argv[0];
 486     int prefix = tcc_basename(a0) - a0;
 487
 488     snprintf(program, sizeof program,
 489         "%.*s%s"
 490 #ifdef TCC_TARGET_PE
 491         "-win32"
 492 #endif
 493         "-tcc"
 494 #ifdef _WIN32
 495         ".exe"
 496 #endif
 497         , prefix, a0, target == 64 ? "x86_64" : "i386");
 498
 499     if (strcmp(a0, program))
 500         execvp(argv[0] = program, argv);
 501     tcc_error("could not run '%s'", program);
 502 }
 503
 504 #endif /* TCC_TARGET_I386 && TCC_TARGET_X86_64 */
 505 /* -------------------------------------------------------------- */
 506 /* enable commandline wildcard expansion (tcc -o x.exe *.c) */
 507
 508 #ifdef _WIN32
 509 const int _CRT_glob = 1;
 510 #ifndef _CRT_glob
 511 const int _dowildcard = 1;
 512 #endif
 513 #endif
 514
 515 /* -------------------------------------------------------------- */
 516 /* generate xxx.d file */
 517
 518 static char *escape_target_dep(const char *s) {
 519     char *res = tcc_malloc(strlen(s) * 2 + 1);
 520     int j;
 521     for (j = 0; *s; s++, j++) {
 522         if (is_space(*s)) {
 523             res[j++] = '\\';
 524         }
 525         res[j] = *s;
 526     }
 527     res[j] = '\0';
 528     return res;
 529 }
 530
 531 ST_FUNC void gen_makedeps(TCCState *s1, const char *target, const char *filename)
 532 {
 533     FILE *depout;
 534     char buf[1024], *escaped_target;
 535     int i, k;
 536
 537     if (!filename) {
 538         /* compute filename automatically: dir/file.o -> dir/file.d */
 539         snprintf(buf, sizeof buf, "%.*s.d",
 540             (int)(tcc_fileextension(target) - target), target);
 541         filename = buf;
 542     }
 543
 544     if (s1->verbose)
 545         printf("<- %s\n", filename);
 546
 547     if(!strcmp(filename, "-"))
 548         depout = fdopen(1, "w");
 549     else
 550         /* XXX return err codes instead of error() ? */
 551         depout = fopen(filename, "w");
 552     if (!depout)
 553         tcc_error("could not open '%s'", filename);
 554     fprintf(depout, "%s:", target);
 555     for (i = 0; i<s1->nb_target_deps; ++i) {
 556         for (k = 0; k < i; ++k)
 557             if (0 == strcmp(s1->target_deps[i], s1->target_deps[k]))
 558                 goto next;
 559         escaped_target = escape_target_dep(s1->target_deps[i]);
 560         fprintf(depout, " \\\n  %s", escaped_target);
 561         tcc_free(escaped_target);
 562     next:;
 563     }
 564     fprintf(depout, "\n");
 565     fclose(depout);
 566 }
 567
 568 /* -------------------------------------------------------------- */