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