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 ArHdr arhdr = {
  72         "/               ",
  73         "            ",
  74         "0     ",
  75         "0     ",
  76         "0       ",
  77         "          ",
  78         ARFMAG
  79         };
  80
  81     static ArHdr arhdro = {
  82         "                ",
  83         "            ",
  84         "0     ",
  85         "0     ",
  86         "0       ",
  87         "          ",
  88         ARFMAG
  89         };
  90
  91     FILE *fi, *fh = NULL, *fo = NULL;
  92     ElfW(Ehdr) *ehdr;
  93     ElfW(Shdr) *shdr;
  94     ElfW(Sym) *sym;
  95     int i, fsize, i_lib, i_obj;
  96     char *buf, *shstr, *symtab = NULL, *strtab = NULL;
  97     int symtabsize = 0;//, strtabsize = 0;
  98     char *anames = NULL;
  99     int *afpos = NULL;
 100     int istrlen, strpos = 0, fpos = 0, funccnt = 0, funcmax, hofs;
 101     char tfile[260], stmp[20];
 102     char *file, *name;
 103     int ret = 2;
 104     const char *ops_conflict = "habdioptxN";  // unsupported but destructive if ignored.
 105     int verbose = 0;
 106
 107     i_lib = 0; i_obj = 0;  // will hold the index of the lib and first obj
 108     for (i = 1; i < argc; i++) {
 109         const char *a = argv[i];
 110         if (*a == '-' && strstr(a, "."))
 111             ret = 1; // -x.y is always invalid (same as gnu ar)
 112         if ((*a == '-') || (i == 1 && !strstr(a, "."))) {  // options argument
 113             if (contains_any(a, ops_conflict))
 114                 ret = 1;
 115             if (strstr(a, "v"))
 116                 verbose = 1;
 117         } else {  // lib or obj files: don't abort - keep validating all args.
 118             if (!i_lib)  // first file is the lib
 119                 i_lib = i;
 120             else if (!i_obj)  // second file is the first obj
 121                 i_obj = i;
 122         }
 123     }
 124
 125     if (!i_obj)  // i_obj implies also i_lib. we require both.
 126         ret = 1;
 127
 128     if (ret == 1)
 129         return ar_usage(ret);
 130
 131     if ((fh = fopen(argv[i_lib], "wb")) == NULL)
 132     {
 133         fprintf(stderr, "tcc: ar: can't open file %s \n", argv[i_lib]);
 134         goto the_end;
 135     }
 136
 137     sprintf(tfile, "%s.tmp", argv[i_lib]);
 138     if ((fo = fopen(tfile, "wb+")) == NULL)
 139     {
 140         fprintf(stderr, "tcc: ar: can't create temporary file %s\n", tfile);
 141         goto the_end;
 142     }
 143
 144     funcmax = 250;
 145     afpos = tcc_realloc(NULL, funcmax * sizeof *afpos); // 250 func
 146     memcpy(&arhdro.ar_mode, "100666", 6);
 147
 148     // i_obj = first input object file
 149     while (i_obj < argc)
 150     {
 151         if (*argv[i_obj] == '-') {  // by now, all options start with '-'
 152             i_obj++;
 153             continue;
 154         }
 155         if ((fi = fopen(argv[i_obj], "rb")) == NULL) {
 156             fprintf(stderr, "tcc: ar: can't open file %s \n", argv[i_obj]);
 157             goto the_end;
 158         }
 159         if (verbose)
 160             printf("a - %s\n", argv[i_obj]);
 161
 162         fseek(fi, 0, SEEK_END);
 163         fsize = ftell(fi);
 164         fseek(fi, 0, SEEK_SET);
 165         buf = tcc_malloc(fsize + 1);
 166         fread(buf, fsize, 1, fi);
 167         fclose(fi);
 168
 169         // elf header
 170         ehdr = (ElfW(Ehdr) *)buf;
 171         if (ehdr->e_ident[4] != ELFCLASSW)
 172         {
 173             fprintf(stderr, "tcc: ar: Unsupported Elf Class: %s\n", argv[i_obj]);
 174             goto the_end;
 175         }
 176
 177         shdr = (ElfW(Shdr) *) (buf + ehdr->e_shoff + ehdr->e_shstrndx * ehdr->e_shentsize);
 178         shstr = (char *)(buf + shdr->sh_offset);
 179         for (i = 0; i < ehdr->e_shnum; i++)
 180         {
 181             shdr = (ElfW(Shdr) *) (buf + ehdr->e_shoff + i * ehdr->e_shentsize);
 182             if (!shdr->sh_offset)
 183                 continue;
 184             if (shdr->sh_type == SHT_SYMTAB)
 185             {
 186                 symtab = (char *)(buf + shdr->sh_offset);
 187                 symtabsize = shdr->sh_size;
 188             }
 189             if (shdr->sh_type == SHT_STRTAB)
 190             {
 191                 if (!strcmp(shstr + shdr->sh_name, ".strtab"))
 192                 {
 193                     strtab = (char *)(buf + shdr->sh_offset);
 194                     //strtabsize = shdr->sh_size;
 195                 }
 196             }
 197         }
 198
 199         if (symtab && symtabsize)
 200         {
 201             int nsym = symtabsize / sizeof(ElfW(Sym));
 202             //printf("symtab: info size shndx name\n");
 203             for (i = 1; i < nsym; i++)
 204             {
 205                 sym = (ElfW(Sym) *) (symtab + i * sizeof(ElfW(Sym)));
 206                 if (sym->st_shndx &&
 207                     (sym->st_info == 0x10
 208                     || sym->st_info == 0x11
 209                     || sym->st_info == 0x12
 210                     )) {
 211                     //printf("symtab: %2Xh %4Xh %2Xh %s\n", sym->st_info, sym->st_size, sym->st_shndx, strtab + sym->st_name);
 212                     istrlen = strlen(strtab + sym->st_name)+1;
 213                     anames = tcc_realloc(anames, strpos+istrlen);
 214                     strcpy(anames + strpos, strtab + sym->st_name);
 215                     strpos += istrlen;
 216                     if (++funccnt >= funcmax) {
 217                         funcmax += 250;
 218                         afpos = tcc_realloc(afpos, funcmax * sizeof *afpos); // 250 func more
 219                     }
 220                     afpos[funccnt] = fpos;
 221                 }
 222             }
 223         }
 224
 225         file = argv[i_obj];
 226         for (name = strchr(file, 0);
 227              name > file && name[-1] != '/' && name[-1] != '\\';
 228              --name);
 229         istrlen = strlen(name);
 230         if (istrlen >= sizeof(arhdro.ar_name))
 231             istrlen = sizeof(arhdro.ar_name) - 1;
 232         memset(arhdro.ar_name, ' ', sizeof(arhdro.ar_name));
 233         memcpy(arhdro.ar_name, name, istrlen);
 234         arhdro.ar_name[istrlen] = '/';
 235         sprintf(stmp, "%-10d", fsize);
 236         memcpy(&arhdro.ar_size, stmp, 10);
 237         fwrite(&arhdro, sizeof(arhdro), 1, fo);
 238         fwrite(buf, fsize, 1, fo);
 239         tcc_free(buf);
 240         i_obj++;
 241         fpos += (fsize + sizeof(arhdro));
 242     }
 243     hofs = 8 + sizeof(arhdr) + strpos + (funccnt+1) * sizeof(int);
 244     fpos = 0;
 245     if ((hofs & 1)) // align
 246         hofs++, fpos = 1;
 247     // write header
 248     fwrite("!<arch>\n", 8, 1, fh);
 249     sprintf(stmp, "%-10d", (int)(strpos + (funccnt+1) * sizeof(int)));
 250     memcpy(&arhdr.ar_size, stmp, 10);
 251     fwrite(&arhdr, sizeof(arhdr), 1, fh);
 252     afpos[0] = le2belong(funccnt);
 253     for (i=1; i<=funccnt; i++)
 254         afpos[i] = le2belong(afpos[i] + hofs);
 255     fwrite(afpos, (funccnt+1) * sizeof(int), 1, fh);
 256     fwrite(anames, strpos, 1, fh);
 257     if (fpos)
 258         fwrite("", 1, 1, fh);
 259     // write objects
 260     fseek(fo, 0, SEEK_END);
 261     fsize = ftell(fo);
 262     fseek(fo, 0, SEEK_SET);
 263     buf = tcc_malloc(fsize + 1);
 264     fread(buf, fsize, 1, fo);
 265     fwrite(buf, fsize, 1, fh);
 266     tcc_free(buf);
 267     ret = 0;
 268 the_end:
 269     if (anames)
 270         tcc_free(anames);
 271     if (afpos)
 272         tcc_free(afpos);
 273     if (fh)
 274         fclose(fh);
 275     if (fo)
 276         fclose(fo), remove(tfile);
 277     return ret;
 278 }
 279
 280 /* -------------------------------------------------------------- */
 281 /*
 282  * tiny_impdef creates an export definition file (.def) from a dll
 283  * on MS-Windows. Usage: tiny_impdef library.dll [-o outputfile]"
 284  *
 285  *  Copyright (c) 2005,2007 grischka
 286  *
 287  * This program is free software; you can redistribute it and/or modify
 288  * it under the terms of the GNU General Public License as published by
 289  * the Free Software Foundation; either version 2 of the License, or
 290  * (at your option) any later version.
 291  *
 292  * This program is distributed in the hope that it will be useful,
 293  * but WITHOUT ANY WARRANTY; without even the implied warranty of
 294  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 295  * GNU General Public License for more details.
 296  *
 297  * You should have received a copy of the GNU General Public License
 298  * along with this program; if not, write to the Free Software
 299  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 300  */
 301
 302 #ifdef TCC_TARGET_PE
 303
 304 ST_FUNC int tcc_tool_impdef(TCCState *s1, int argc, char **argv)
 305 {
 306     int ret, v, i;
 307     char infile[260];
 308     char outfile[260];
 309
 310     const char *file;
 311     char *p, *q;
 312     FILE *fp, *op;
 313
 314 #ifdef _WIN32
 315     char path[260];
 316 #endif
 317
 318     infile[0] = outfile[0] = 0;
 319     fp = op = NULL;
 320     ret = 1;
 321     p = NULL;
 322     v = 0;
 323
 324     for (i = 1; i < argc; ++i) {
 325         const char *a = argv[i];
 326         if ('-' == a[0]) {
 327             if (0 == strcmp(a, "-v")) {
 328                 v = 1;
 329             } else if (0 == strcmp(a, "-o")) {
 330                 if (++i == argc)
 331                     goto usage;
 332                 strcpy(outfile, argv[i]);
 333             } else
 334                 goto usage;
 335         } else if (0 == infile[0])
 336             strcpy(infile, a);
 337         else
 338             goto usage;
 339     }
 340
 341     if (0 == infile[0]) {
 342 usage:
 343         fprintf(stderr,
 344             "usage: tcc -impdef library.dll [-v] [-o outputfile]\n"
 345             "create export definition file (.def) from dll\n"
 346             );
 347         goto the_end;
 348     }
 349
 350     if (0 == outfile[0]) {
 351         strcpy(outfile, tcc_basename(infile));
 352         q = strrchr(outfile, '.');
 353         if (NULL == q)
 354             q = strchr(outfile, 0);
 355         strcpy(q, ".def");
 356     }
 357
 358     file = infile;
 359 #ifdef _WIN32
 360     if (SearchPath(NULL, file, ".dll", sizeof path, path, NULL))
 361         file = path;
 362 #endif
 363     ret = tcc_get_dllexports(file, &p);
 364     if (ret || !p) {
 365         fprintf(stderr, "tcc: impdef: %s '%s'\n",
 366             ret == -1 ? "can't find file" :
 367             ret ==  1 ? "can't read symbols" :
 368             ret ==  0 ? "no symbols found in" :
 369             "unknown file type", file);
 370         ret = 1;
 371         goto the_end;
 372     }
 373
 374     if (v)
 375         printf("-> %s\n", file);
 376
 377     op = fopen(outfile, "wb");
 378     if (NULL == op) {
 379         fprintf(stderr, "tcc: impdef: could not create output file: %s\n", outfile);
 380         goto the_end;
 381     }
 382
 383     fprintf(op, "LIBRARY %s\n\nEXPORTS\n", tcc_basename(file));
 384     for (q = p, i = 0; *q; ++i) {
 385         fprintf(op, "%s\n", q);
 386         q += strlen(q) + 1;
 387     }
 388
 389     if (v)
 390         printf("<- %s (%d symbol%s)\n", outfile, i, &"s"[i<2]);
 391
 392     ret = 0;
 393
 394 the_end:
 395     /* cannot free memory received from tcc_get_dllexports
 396        if it came from a dll */
 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 int _CRT_glob = 1;
 510 #ifndef _CRT_glob
 511 int _dowildcard = 1;
 512 #endif
 513 #endif
 514
 515 /* -------------------------------------------------------------- */
 516 /* generate xxx.d file */
 517
 518 ST_FUNC void gen_makedeps(TCCState *s1, const char *target, const char *filename)
 519 {
 520     FILE *depout;
 521     char buf[1024];
 522     int i;
 523
 524     if (!filename) {
 525         /* compute filename automatically: dir/file.o -> dir/file.d */
 526         snprintf(buf, sizeof buf, "%.*s.d",
 527             (int)(tcc_fileextension(target) - target), target);
 528         filename = buf;
 529     }
 530
 531     if (s1->verbose)
 532         printf("<- %s\n", filename);
 533
 534     /* XXX return err codes instead of error() ? */
 535     depout = fopen(filename, "w");
 536     if (!depout)
 537         tcc_error("could not open '%s'", filename);
 538
 539     fprintf(depout, "%s: \\\n", target);
 540     for (i=0; i<s1->nb_target_deps; ++i)
 541         fprintf(depout, " %s \\\n", s1->target_deps[i]);
 542     fprintf(depout, "\n");
 543     fclose(depout);
 544 }
 545
 546 /* -------------------------------------------------------------- */