libtcc.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 "tcc.h"
  22
  23 /********************************************************/
  24 /* global variables */
  25
  26 /* use GNU C extensions */
  27 ST_DATA int gnu_ext = 1;
  28
  29 /* use TinyCC extensions */
  30 ST_DATA int tcc_ext = 1;
  31
  32 /* XXX: get rid of this ASAP */
  33 ST_DATA struct TCCState *tcc_state;
  34
  35 /********************************************************/
  36
  37 #ifdef ONE_SOURCE
  38 #include "tccpp.c"
  39 #include "tccgen.c"
  40 #include "tccelf.c"
  41 #include "tccrun.c"
  42 #ifdef TCC_TARGET_I386
  43 #include "i386-gen.c"
  44 #endif
  45 #ifdef TCC_TARGET_ARM
  46 #include "arm-gen.c"
  47 #endif
  48 #ifdef TCC_TARGET_ARM64
  49 #include "arm64-gen.c"
  50 #endif
  51 #ifdef TCC_TARGET_C67
  52 #include "c67-gen.c"
  53 #endif
  54 #ifdef TCC_TARGET_X86_64
  55 #include "x86_64-gen.c"
  56 #endif
  57 #ifdef CONFIG_TCC_ASM
  58 #include "tccasm.c"
  59 #if defined TCC_TARGET_I386 || defined TCC_TARGET_X86_64
  60 #include "i386-asm.c"
  61 #endif
  62 #endif
  63 #ifdef TCC_TARGET_COFF
  64 #include "tcccoff.c"
  65 #endif
  66 #ifdef TCC_TARGET_PE
  67 #include "tccpe.c"
  68 #endif
  69 #endif /* ONE_SOURCE */
  70
  71 /********************************************************/
  72 #ifndef CONFIG_TCC_ASM
  73 ST_FUNC void asm_instr(void)
  74 {
  75     tcc_error("inline asm() not supported");
  76 }
  77 ST_FUNC void asm_global_instr(void)
  78 {
  79     tcc_error("inline asm() not supported");
  80 }
  81 #endif
  82
  83 /********************************************************/
  84 #ifdef _WIN32
  85 static char *normalize_slashes(char *path)
  86 {
  87     char *p;
  88     for (p = path; *p; ++p)
  89         if (*p == '\\')
  90             *p = '/';
  91     return path;
  92 }
  93
  94 static HMODULE tcc_module;
  95
  96 /* on win32, we suppose the lib and includes are at the location of 'tcc.exe' */
  97 static void tcc_set_lib_path_w32(TCCState *s)
  98 {
  99     char path[1024], *p;
 100     GetModuleFileNameA(tcc_module, path, sizeof path);
 101     p = tcc_basename(normalize_slashes(strlwr(path)));
 102     if (p - 5 > path && 0 == strncmp(p - 5, "/bin/", 5))
 103         p -= 5;
 104     else if (p > path)
 105         p--;
 106     *p = 0;
 107     tcc_set_lib_path(s, path);
 108 }
 109
 110 #ifdef TCC_TARGET_PE
 111 static void tcc_add_systemdir(TCCState *s)
 112 {
 113     char buf[1000];
 114     GetSystemDirectory(buf, sizeof buf);
 115     tcc_add_library_path(s, normalize_slashes(buf));
 116 }
 117 #endif
 118
 119 #ifndef CONFIG_TCC_STATIC
 120 void dlclose(void *p)
 121 {
 122     FreeLibrary((HMODULE)p);
 123 }
 124 #endif
 125
 126 #ifdef LIBTCC_AS_DLL
 127 BOOL WINAPI DllMain (HINSTANCE hDll, DWORD dwReason, LPVOID lpReserved)
 128 {
 129     if (DLL_PROCESS_ATTACH == dwReason)
 130         tcc_module = hDll;
 131     return TRUE;
 132 }
 133 #endif
 134 #endif
 135
 136 /********************************************************/
 137 /* copy a string and truncate it. */
 138 PUB_FUNC char *pstrcpy(char *buf, int buf_size, const char *s)
 139 {
 140     char *q, *q_end;
 141     int c;
 142
 143     if (buf_size > 0) {
 144         q = buf;
 145         q_end = buf + buf_size - 1;
 146         while (q < q_end) {
 147             c = *s++;
 148             if (c == '\0')
 149                 break;
 150             *q++ = c;
 151         }
 152         *q = '\0';
 153     }
 154     return buf;
 155 }
 156
 157 /* strcat and truncate. */
 158 PUB_FUNC char *pstrcat(char *buf, int buf_size, const char *s)
 159 {
 160     int len;
 161     len = strlen(buf);
 162     if (len < buf_size)
 163         pstrcpy(buf + len, buf_size - len, s);
 164     return buf;
 165 }
 166
 167 PUB_FUNC char *pstrncpy(char *out, const char *in, size_t num)
 168 {
 169     memcpy(out, in, num);
 170     out[num] = '\0';
 171     return out;
 172 }
 173
 174 /* extract the basename of a file */
 175 PUB_FUNC char *tcc_basename(const char *name)
 176 {
 177     char *p = strchr(name, 0);
 178     while (p > name && !IS_DIRSEP(p[-1]))
 179         --p;
 180     return p;
 181 }
 182
 183 /* extract extension part of a file
 184  *
 185  * (if no extension, return pointer to end-of-string)
 186  */
 187 PUB_FUNC char *tcc_fileextension (const char *name)
 188 {
 189     char *b = tcc_basename(name);
 190     char *e = strrchr(b, '.');
 191     return e ? e : strchr(b, 0);
 192 }
 193
 194 /********************************************************/
 195 /* memory management */
 196
 197 #undef free
 198 #undef malloc
 199 #undef realloc
 200
 201 #ifdef MEM_DEBUG
 202 ST_DATA int mem_cur_size;
 203 ST_DATA int mem_max_size;
 204 unsigned malloc_usable_size(void*);
 205 #endif
 206
 207 PUB_FUNC void tcc_free(void *ptr)
 208 {
 209 #ifdef MEM_DEBUG
 210     mem_cur_size -= malloc_usable_size(ptr);
 211 #endif
 212     free(ptr);
 213 }
 214
 215 PUB_FUNC void *tcc_malloc(unsigned long size)
 216 {
 217     void *ptr;
 218     ptr = malloc(size);
 219     if (!ptr && size)
 220         tcc_error("memory full (malloc)");
 221 #ifdef MEM_DEBUG
 222     mem_cur_size += malloc_usable_size(ptr);
 223     if (mem_cur_size > mem_max_size)
 224         mem_max_size = mem_cur_size;
 225 #endif
 226     return ptr;
 227 }
 228
 229 PUB_FUNC void *tcc_mallocz(unsigned long size)
 230 {
 231     void *ptr;
 232     ptr = tcc_malloc(size);
 233     memset(ptr, 0, size);
 234     return ptr;
 235 }
 236
 237 PUB_FUNC void *tcc_realloc(void *ptr, unsigned long size)
 238 {
 239     void *ptr1;
 240 #ifdef MEM_DEBUG
 241     mem_cur_size -= malloc_usable_size(ptr);
 242 #endif
 243     ptr1 = realloc(ptr, size);
 244     if (!ptr1 && size)
 245         tcc_error("memory full (realloc)");
 246 #ifdef MEM_DEBUG
 247     /* NOTE: count not correct if alloc error, but not critical */
 248     mem_cur_size += malloc_usable_size(ptr1);
 249     if (mem_cur_size > mem_max_size)
 250         mem_max_size = mem_cur_size;
 251 #endif
 252     return ptr1;
 253 }
 254
 255 PUB_FUNC char *tcc_strdup(const char *str)
 256 {
 257     char *ptr;
 258     ptr = tcc_malloc(strlen(str) + 1);
 259     strcpy(ptr, str);
 260     return ptr;
 261 }
 262
 263 PUB_FUNC void tcc_memstats(void)
 264 {
 265 #ifdef MEM_DEBUG
 266     printf("memory: %d bytes, max = %d bytes\n", mem_cur_size, mem_max_size);
 267 #endif
 268 }
 269
 270 #define free(p) use_tcc_free(p)
 271 #define malloc(s) use_tcc_malloc(s)
 272 #define realloc(p, s) use_tcc_realloc(p, s)
 273
 274 /********************************************************/
 275 /* dynarrays */
 276
 277 ST_FUNC void dynarray_add(void ***ptab, int *nb_ptr, void *data)
 278 {
 279     int nb, nb_alloc;
 280     void **pp;
 281
 282     nb = *nb_ptr;
 283     pp = *ptab;
 284     /* every power of two we double array size */
 285     if ((nb & (nb - 1)) == 0) {
 286         if (!nb)
 287             nb_alloc = 1;
 288         else
 289             nb_alloc = nb * 2;
 290         pp = tcc_realloc(pp, nb_alloc * sizeof(void *));
 291         *ptab = pp;
 292     }
 293     pp[nb++] = data;
 294     *nb_ptr = nb;
 295 }
 296
 297 ST_FUNC void dynarray_reset(void *pp, int *n)
 298 {
 299     void **p;
 300     for (p = *(void***)pp; *n; ++p, --*n)
 301         if (*p)
 302             tcc_free(*p);
 303     tcc_free(*(void**)pp);
 304     *(void**)pp = NULL;
 305 }
 306
 307 static void tcc_split_path(TCCState *s, void ***p_ary, int *p_nb_ary, const char *in)
 308 {
 309     const char *p;
 310     do {
 311         int c;
 312         CString str;
 313
 314         cstr_new(&str);
 315         for (p = in; c = *p, c != '\0' && c != PATHSEP; ++p) {
 316             if (c == '{' && p[1] && p[2] == '}') {
 317                 c = p[1], p += 2;
 318                 if (c == 'B')
 319                     cstr_cat(&str, s->tcc_lib_path);
 320             } else {
 321                 cstr_ccat(&str, c);
 322             }
 323         }
 324         cstr_ccat(&str, '\0');
 325         dynarray_add(p_ary, p_nb_ary, str.data);
 326         in = p+1;
 327     } while (*p);
 328 }
 329
 330 /********************************************************/
 331
 332 ST_FUNC Section *new_section(TCCState *s1, const char *name, int sh_type, int sh_flags)
 333 {
 334     Section *sec;
 335
 336     sec = tcc_mallocz(sizeof(Section) + strlen(name));
 337     strcpy(sec->name, name);
 338     sec->sh_type = sh_type;
 339     sec->sh_flags = sh_flags;
 340     switch(sh_type) {
 341     case SHT_HASH:
 342     case SHT_REL:
 343     case SHT_RELA:
 344     case SHT_DYNSYM:
 345     case SHT_SYMTAB:
 346     case SHT_DYNAMIC:
 347         sec->sh_addralign = 4;
 348         break;
 349     case SHT_STRTAB:
 350         sec->sh_addralign = 1;
 351         break;
 352     default:
 353         sec->sh_addralign = 32; /* default conservative alignment */
 354         break;
 355     }
 356
 357     if (sh_flags & SHF_PRIVATE) {
 358         dynarray_add((void ***)&s1->priv_sections, &s1->nb_priv_sections, sec);
 359     } else {
 360         sec->sh_num = s1->nb_sections;
 361         dynarray_add((void ***)&s1->sections, &s1->nb_sections, sec);
 362     }
 363
 364     return sec;
 365 }
 366
 367 static void free_section(Section *s)
 368 {
 369     tcc_free(s->data);
 370 }
 371
 372 /* realloc section and set its content to zero */
 373 ST_FUNC void section_realloc(Section *sec, unsigned long new_size)
 374 {
 375     unsigned long size;
 376     unsigned char *data;
 377
 378     size = sec->data_allocated;
 379     if (size == 0)
 380         size = 1;
 381     while (size < new_size)
 382         size = size * 2;
 383     data = tcc_realloc(sec->data, size);
 384     memset(data + sec->data_allocated, 0, size - sec->data_allocated);
 385     sec->data = data;
 386     sec->data_allocated = size;
 387 }
 388
 389 /* reserve at least 'size' bytes in section 'sec' from
 390    sec->data_offset. */
 391 ST_FUNC void *section_ptr_add(Section *sec, addr_t size)
 392 {
 393     size_t offset, offset1;
 394
 395     offset = sec->data_offset;
 396     offset1 = offset + size;
 397     if (offset1 > sec->data_allocated)
 398         section_realloc(sec, offset1);
 399     sec->data_offset = offset1;
 400     return sec->data + offset;
 401 }
 402
 403 /* reserve at least 'size' bytes from section start */
 404 ST_FUNC void section_reserve(Section *sec, unsigned long size)
 405 {
 406     if (size > sec->data_allocated)
 407         section_realloc(sec, size);
 408     if (size > sec->data_offset)
 409         sec->data_offset = size;
 410 }
 411
 412 /* return a reference to a section, and create it if it does not
 413    exists */
 414 ST_FUNC Section *find_section(TCCState *s1, const char *name)
 415 {
 416     Section *sec;
 417     int i;
 418     for(i = 1; i < s1->nb_sections; i++) {
 419         sec = s1->sections[i];
 420         if (!strcmp(name, sec->name))
 421             return sec;
 422     }
 423     /* sections are created as PROGBITS */
 424     return new_section(s1, name, SHT_PROGBITS, SHF_ALLOC);
 425 }
 426
 427 /* update sym->c so that it points to an external symbol in section
 428    'section' with value 'value' */
 429 ST_FUNC void put_extern_sym2(Sym *sym, Section *section,
 430                             addr_t value, unsigned long size,
 431                             int can_add_underscore)
 432 {
 433     int sym_type, sym_bind, sh_num, info, other;
 434     ElfW(Sym) *esym;
 435     const char *name;
 436     char buf1[256];
 437
 438 #ifdef CONFIG_TCC_BCHECK
 439     char buf[32];
 440 #endif
 441
 442     if (section == NULL)
 443         sh_num = SHN_UNDEF;
 444     else if (section == SECTION_ABS)
 445         sh_num = SHN_ABS;
 446     else
 447         sh_num = section->sh_num;
 448
 449     if ((sym->type.t & VT_BTYPE) == VT_FUNC) {
 450         sym_type = STT_FUNC;
 451     } else if ((sym->type.t & VT_BTYPE) == VT_VOID) {
 452         sym_type = STT_NOTYPE;
 453     } else {
 454         sym_type = STT_OBJECT;
 455     }
 456
 457     if (sym->type.t & VT_STATIC)
 458         sym_bind = STB_LOCAL;
 459     else {
 460         if (sym->type.t & VT_WEAK)
 461             sym_bind = STB_WEAK;
 462         else
 463             sym_bind = STB_GLOBAL;
 464     }
 465
 466     if (!sym->c) {
 467         name = get_tok_str(sym->v, NULL);
 468 #ifdef CONFIG_TCC_BCHECK
 469         if (tcc_state->do_bounds_check) {
 470             /* XXX: avoid doing that for statics ? */
 471             /* if bound checking is activated, we change some function
 472                names by adding the "__bound" prefix */
 473             switch(sym->v) {
 474 #ifdef TCC_TARGET_PE
 475             /* XXX: we rely only on malloc hooks */
 476             case TOK_malloc:
 477             case TOK_free:
 478             case TOK_realloc:
 479             case TOK_memalign:
 480             case TOK_calloc:
 481 #endif
 482             case TOK_memcpy:
 483             case TOK_memmove:
 484             case TOK_memset:
 485             case TOK_strlen:
 486             case TOK_strcpy:
 487             case TOK_alloca:
 488                 strcpy(buf, "__bound_");
 489                 strcat(buf, name);
 490                 name = buf;
 491                 break;
 492             }
 493         }
 494 #endif
 495         other = 0;
 496
 497 #ifdef TCC_TARGET_PE
 498         if (sym->type.t & VT_EXPORT)
 499             other |= ST_PE_EXPORT;
 500         if (sym_type == STT_FUNC && sym->type.ref) {
 501             Sym *ref = sym->type.ref;
 502             if (ref->a.func_export)
 503                 other |= ST_PE_EXPORT;
 504             if (ref->a.func_call == FUNC_STDCALL && can_add_underscore) {
 505                 sprintf(buf1, "_%s@%d", name, ref->a.func_args * PTR_SIZE);
 506                 name = buf1;
 507                 other |= ST_PE_STDCALL;
 508                 can_add_underscore = 0;
 509             }
 510         } else {
 511             if (find_elf_sym(tcc_state->dynsymtab_section, name))
 512                 other |= ST_PE_IMPORT;
 513             if (sym->type.t & VT_IMPORT)
 514                 other |= ST_PE_IMPORT;
 515         }
 516 #else
 517         if (! (sym->type.t & VT_STATIC))
 518             other = (sym->type.t & VT_VIS_MASK) >> VT_VIS_SHIFT;
 519 #endif
 520         if (tcc_state->leading_underscore && can_add_underscore) {
 521             buf1[0] = '_';
 522             pstrcpy(buf1 + 1, sizeof(buf1) - 1, name);
 523             name = buf1;
 524         }
 525         if (sym->asm_label) {
 526             name = sym->asm_label;
 527         }
 528         info = ELFW(ST_INFO)(sym_bind, sym_type);
 529         sym->c = add_elf_sym(symtab_section, value, size, info, other, sh_num, name);
 530     } else {
 531         esym = &((ElfW(Sym) *)symtab_section->data)[sym->c];
 532         esym->st_value = value;
 533         esym->st_size = size;
 534         esym->st_shndx = sh_num;
 535     }
 536 }
 537
 538 ST_FUNC void put_extern_sym(Sym *sym, Section *section,
 539                            addr_t value, unsigned long size)
 540 {
 541     put_extern_sym2(sym, section, value, size, 1);
 542 }
 543
 544 /* add a new relocation entry to symbol 'sym' in section 's' */
 545 ST_FUNC void greloca(Section *s, Sym *sym, unsigned long offset, int type,
 546                      addr_t addend)
 547 {
 548     int c = 0;
 549     if (sym) {
 550         if (0 == sym->c)
 551             put_extern_sym(sym, NULL, 0, 0);
 552         c = sym->c;
 553     }
 554     /* now we can add ELF relocation info */
 555     put_elf_reloca(symtab_section, s, offset, type, c, addend);
 556 }
 557
 558 ST_FUNC void greloc(Section *s, Sym *sym, unsigned long offset, int type)
 559 {
 560     greloca(s, sym, offset, type, 0);
 561 }
 562
 563 /********************************************************/
 564
 565 static void strcat_vprintf(char *buf, int buf_size, const char *fmt, va_list ap)
 566 {
 567     int len;
 568     len = strlen(buf);
 569     vsnprintf(buf + len, buf_size - len, fmt, ap);
 570 }
 571
 572 static void strcat_printf(char *buf, int buf_size, const char *fmt, ...)
 573 {
 574     va_list ap;
 575     va_start(ap, fmt);
 576     strcat_vprintf(buf, buf_size, fmt, ap);
 577     va_end(ap);
 578 }
 579
 580 static void error1(TCCState *s1, int is_warning, const char *fmt, va_list ap)
 581 {
 582     char buf[2048];
 583     BufferedFile **pf, *f;
 584
 585     buf[0] = '\0';
 586     /* use upper file if inline ":asm:" or token ":paste:" */
 587     for (f = file; f && f->filename[0] == ':'; f = f->prev)
 588      ;
 589     if (f) {
 590         for(pf = s1->include_stack; pf < s1->include_stack_ptr; pf++)
 591             strcat_printf(buf, sizeof(buf), "In file included from %s:%d:\n",
 592                 (*pf)->filename, (*pf)->line_num);
 593         if (f->line_num > 0) {
 594             strcat_printf(buf, sizeof(buf), "%s:%d: ",
 595                 f->filename, f->line_num);
 596         } else {
 597             strcat_printf(buf, sizeof(buf), "%s: ",
 598                 f->filename);
 599         }
 600     } else {
 601         strcat_printf(buf, sizeof(buf), "tcc: ");
 602     }
 603     if (is_warning)
 604         strcat_printf(buf, sizeof(buf), "warning: ");
 605     else
 606         strcat_printf(buf, sizeof(buf), "error: ");
 607     strcat_vprintf(buf, sizeof(buf), fmt, ap);
 608
 609     if (!s1->error_func) {
 610         /* default case: stderr */
 611         fprintf(stderr, "%s\n", buf);
 612     } else {
 613         s1->error_func(s1->error_opaque, buf);
 614     }
 615     if (!is_warning || s1->warn_error)
 616         s1->nb_errors++;
 617 }
 618
 619 LIBTCCAPI void tcc_set_error_func(TCCState *s, void *error_opaque,
 620                         void (*error_func)(void *opaque, const char *msg))
 621 {
 622     s->error_opaque = error_opaque;
 623     s->error_func = error_func;
 624 }
 625
 626 /* error without aborting current compilation */
 627 PUB_FUNC void tcc_error_noabort(const char *fmt, ...)
 628 {
 629     TCCState *s1 = tcc_state;
 630     va_list ap;
 631
 632     va_start(ap, fmt);
 633     error1(s1, 0, fmt, ap);
 634     va_end(ap);
 635 }
 636
 637 PUB_FUNC void tcc_error(const char *fmt, ...)
 638 {
 639     TCCState *s1 = tcc_state;
 640     va_list ap;
 641
 642     va_start(ap, fmt);
 643     error1(s1, 0, fmt, ap);
 644     va_end(ap);
 645     /* better than nothing: in some cases, we accept to handle errors */
 646     if (s1->error_set_jmp_enabled) {
 647         longjmp(s1->error_jmp_buf, 1);
 648     } else {
 649         /* XXX: eliminate this someday */
 650         exit(1);
 651     }
 652 }
 653
 654 PUB_FUNC void tcc_warning(const char *fmt, ...)
 655 {
 656     TCCState *s1 = tcc_state;
 657     va_list ap;
 658
 659     if (s1->warn_none)
 660         return;
 661
 662     va_start(ap, fmt);
 663     error1(s1, 1, fmt, ap);
 664     va_end(ap);
 665 }
 666
 667 /********************************************************/
 668 /* I/O layer */
 669
 670 ST_FUNC void tcc_open_bf(TCCState *s1, const char *filename, int initlen)
 671 {
 672     BufferedFile *bf;
 673     int buflen = initlen ? initlen : IO_BUF_SIZE;
 674
 675     bf = tcc_malloc(sizeof(BufferedFile) + buflen);
 676     bf->buf_ptr = bf->buffer;
 677     bf->buf_end = bf->buffer + initlen;
 678     bf->buf_end[0] = CH_EOB; /* put eob symbol */
 679     pstrcpy(bf->filename, sizeof(bf->filename), filename);
 680 #ifdef _WIN32
 681     normalize_slashes(bf->filename);
 682 #endif
 683     bf->line_num = 1;
 684     bf->ifndef_macro = 0;
 685     bf->ifdef_stack_ptr = s1->ifdef_stack_ptr;
 686     bf->fd = -1;
 687     bf->prev = file;
 688     file = bf;
 689 }
 690
 691 ST_FUNC void tcc_close(void)
 692 {
 693     BufferedFile *bf = file;
 694     if (bf->fd > 0) {
 695         close(bf->fd);
 696         total_lines += bf->line_num;
 697     }
 698     file = bf->prev;
 699     tcc_free(bf);
 700 }
 701
 702 ST_FUNC int tcc_open(TCCState *s1, const char *filename)
 703 {
 704     int fd;
 705     if (strcmp(filename, "-") == 0)
 706         fd = 0, filename = "stdin";
 707     else
 708         fd = open(filename, O_RDONLY | O_BINARY);
 709     if ((s1->verbose == 2 && fd >= 0) || s1->verbose == 3)
 710         printf("%s %*s%s\n", fd < 0 ? "nf":"->",
 711                (int)(s1->include_stack_ptr - s1->include_stack), "", filename);
 712     if (fd < 0)
 713         return -1;
 714
 715     tcc_open_bf(s1, filename, 0);
 716     file->fd = fd;
 717     return fd;
 718 }
 719
 720 /* compile the C file opened in 'file'. Return non zero if errors. */
 721 static int tcc_compile(TCCState *s1)
 722 {
 723     Sym *define_start;
 724     SValue *pvtop;
 725     char buf[512];
 726     volatile int section_sym;
 727
 728 #ifdef INC_DEBUG
 729     printf("%s: **** new file\n", file->filename);
 730 #endif
 731     preprocess_init(s1);
 732
 733     cur_text_section = NULL;
 734     funcname = "";
 735     anon_sym = SYM_FIRST_ANOM;
 736
 737     /* file info: full path + filename */
 738     section_sym = 0; /* avoid warning */
 739     if (s1->do_debug) {
 740         section_sym = put_elf_sym(symtab_section, 0, 0,
 741                                   ELFW(ST_INFO)(STB_LOCAL, STT_SECTION), 0,
 742                                   text_section->sh_num, NULL);
 743         getcwd(buf, sizeof(buf));
 744 #ifdef _WIN32
 745         normalize_slashes(buf);
 746 #endif
 747         pstrcat(buf, sizeof(buf), "/");
 748         put_stabs_r(buf, N_SO, 0, 0,
 749                     text_section->data_offset, text_section, section_sym);
 750         put_stabs_r(file->filename, N_SO, 0, 0,
 751                     text_section->data_offset, text_section, section_sym);
 752     }
 753     /* an elf symbol of type STT_FILE must be put so that STB_LOCAL
 754        symbols can be safely used */
 755     put_elf_sym(symtab_section, 0, 0,
 756                 ELFW(ST_INFO)(STB_LOCAL, STT_FILE), 0,
 757                 SHN_ABS, file->filename);
 758
 759     /* define some often used types */
 760     int_type.t = VT_INT;
 761
 762     char_pointer_type.t = VT_BYTE;
 763     mk_pointer(&char_pointer_type);
 764
 765 #if PTR_SIZE == 4
 766     size_type.t = VT_INT;
 767 #else
 768     size_type.t = VT_LLONG;
 769 #endif
 770
 771     func_old_type.t = VT_FUNC;
 772     func_old_type.ref = sym_push(SYM_FIELD, &int_type, FUNC_CDECL, FUNC_OLD);
 773 #ifdef TCC_TARGET_ARM
 774     arm_init(s1);
 775 #endif
 776
 777 #if 0
 778     /* define 'void *alloca(unsigned int)' builtin function */
 779     {
 780         Sym *s1;
 781
 782         p = anon_sym++;
 783         sym = sym_push(p, mk_pointer(VT_VOID), FUNC_CDECL, FUNC_NEW);
 784         s1 = sym_push(SYM_FIELD, VT_UNSIGNED | VT_INT, 0, 0);
 785         s1->next = NULL;
 786         sym->next = s1;
 787         sym_push(TOK_alloca, VT_FUNC | (p << VT_STRUCT_SHIFT), VT_CONST, 0);
 788     }
 789 #endif
 790
 791     define_start = define_stack;
 792     nocode_wanted = 1;
 793
 794     if (setjmp(s1->error_jmp_buf) == 0) {
 795         s1->nb_errors = 0;
 796         s1->error_set_jmp_enabled = 1;
 797
 798         ch = file->buf_ptr[0];
 799         tok_flags = TOK_FLAG_BOL | TOK_FLAG_BOF;
 800         parse_flags = PARSE_FLAG_PREPROCESS | PARSE_FLAG_TOK_NUM;
 801         pvtop = vtop;
 802         next();
 803         decl(VT_CONST);
 804         if (tok != TOK_EOF)
 805             expect("declaration");
 806         if (pvtop != vtop)
 807             tcc_warning("internal compiler error: vstack leak? (%d)", vtop - pvtop);
 808
 809         /* end of translation unit info */
 810         if (s1->do_debug) {
 811             put_stabs_r(NULL, N_SO, 0, 0,
 812                         text_section->data_offset, text_section, section_sym);
 813         }
 814     }
 815
 816     s1->error_set_jmp_enabled = 0;
 817
 818     /* reset define stack, but leave -Dsymbols (may be incorrect if
 819        they are undefined) */
 820     free_defines(define_start);
 821
 822     gen_inline_functions();
 823
 824     sym_pop(&global_stack, NULL);
 825     sym_pop(&local_stack, NULL);
 826
 827     return s1->nb_errors != 0 ? -1 : 0;
 828 }
 829
 830 LIBTCCAPI int tcc_compile_string(TCCState *s, const char *str)
 831 {
 832     int i;
 833     int len, ret;
 834     len = strlen(str);
 835
 836     tcc_open_bf(s, "<string>", len);
 837     memcpy(file->buffer, str, len);
 838
 839     len = s->nb_files;
 840     ret = tcc_compile(s);
 841     tcc_close();
 842
 843     /* habdle #pragma comment(lib,) */
 844     for(i = len; i < s->nb_files; i++) {
 845         /* int filetype = *(unsigned char *)s->files[i]; */
 846         const char *filename = s->files[i] + 1;
 847         if (filename[0] == '-' && filename[1] == 'l') {
 848             if (tcc_add_library(s, filename + 2) < 0) {
 849                 tcc_warning("cannot find library 'lib%s'", filename+2);
 850                 ret++;
 851             }
 852         }
 853         tcc_free(s->files[i]);
 854     }
 855     s->nb_files = len;
 856
 857     return ret;
 858 }
 859
 860 /* define a preprocessor symbol. A value can also be provided with the '=' operator */
 861 LIBTCCAPI void tcc_define_symbol(TCCState *s1, const char *sym, const char *value)
 862 {
 863     int len1, len2;
 864     /* default value */
 865     if (!value)
 866         value = "1";
 867     len1 = strlen(sym);
 868     len2 = strlen(value);
 869
 870     /* init file structure */
 871     tcc_open_bf(s1, "<define>", len1 + len2 + 1);
 872     memcpy(file->buffer, sym, len1);
 873     file->buffer[len1] = ' ';
 874     memcpy(file->buffer + len1 + 1, value, len2);
 875
 876     /* parse with define parser */
 877     ch = file->buf_ptr[0];
 878     next_nomacro();
 879     parse_define();
 880
 881     tcc_close();
 882 }
 883
 884 /* undefine a preprocessor symbol */
 885 LIBTCCAPI void tcc_undefine_symbol(TCCState *s1, const char *sym)
 886 {
 887     TokenSym *ts;
 888     Sym *s;
 889     ts = tok_alloc(sym, strlen(sym));
 890     s = define_find(ts->tok);
 891     /* undefine symbol by putting an invalid name */
 892     if (s)
 893         define_undef(s);
 894 }
 895
 896 /* cleanup all static data used during compilation */
 897 static void tcc_cleanup(void)
 898 {
 899     int i, n;
 900     if (NULL == tcc_state)
 901         return;
 902     tcc_state = NULL;
 903
 904     /* free -D defines */
 905     free_defines(NULL);
 906
 907     /* free tokens */
 908     n = tok_ident - TOK_IDENT;
 909     for(i = 0; i < n; i++)
 910         tcc_free(table_ident[i]);
 911     tcc_free(table_ident);
 912     table_ident = NULL;
 913
 914     /* free sym_pools */
 915     dynarray_reset(&sym_pools, &nb_sym_pools);
 916     /* string buffer */
 917     cstr_free(&tokcstr);
 918     /* reset symbol stack */
 919     sym_free_first = NULL;
 920     /* cleanup from error/setjmp */
 921     macro_ptr = NULL;
 922 }
 923
 924 LIBTCCAPI TCCState *tcc_new(void)
 925 {
 926     TCCState *s;
 927     char buffer[100];
 928     int a,b,c;
 929
 930     tcc_cleanup();
 931
 932     s = tcc_mallocz(sizeof(TCCState));
 933     if (!s)
 934         return NULL;
 935     tcc_state = s;
 936 #ifdef _WIN32
 937     tcc_set_lib_path_w32(s);
 938 #else
 939     tcc_set_lib_path(s, CONFIG_TCCDIR);
 940 #endif
 941     s->output_type = 0;
 942     preprocess_new();
 943     s->include_stack_ptr = s->include_stack;
 944
 945     /* we add dummy defines for some special macros to speed up tests
 946        and to have working defined() */
 947     define_push(TOK___LINE__, MACRO_OBJ, NULL, NULL);
 948     define_push(TOK___FILE__, MACRO_OBJ, NULL, NULL);
 949     define_push(TOK___DATE__, MACRO_OBJ, NULL, NULL);
 950     define_push(TOK___TIME__, MACRO_OBJ, NULL, NULL);
 951
 952     /* define __TINYC__ 92X  */
 953     sscanf(TCC_VERSION, "%d.%d.%d", &a, &b, &c);
 954     sprintf(buffer, "%d", a*10000 + b*100 + c);
 955     tcc_define_symbol(s, "__TINYC__", buffer);
 956
 957     /* standard defines */
 958     tcc_define_symbol(s, "__STDC__", NULL);
 959     tcc_define_symbol(s, "__STDC_VERSION__", "199901L");
 960     tcc_define_symbol(s, "__STDC_HOSTED__", NULL);
 961
 962     /* target defines */
 963 #if defined(TCC_TARGET_I386)
 964     tcc_define_symbol(s, "__i386__", NULL);
 965     tcc_define_symbol(s, "__i386", NULL);
 966     tcc_define_symbol(s, "i386", NULL);
 967 #elif defined(TCC_TARGET_X86_64)
 968     tcc_define_symbol(s, "__x86_64__", NULL);
 969 #elif defined(TCC_TARGET_ARM)
 970     tcc_define_symbol(s, "__ARM_ARCH_4__", NULL);
 971     tcc_define_symbol(s, "__arm_elf__", NULL);
 972     tcc_define_symbol(s, "__arm_elf", NULL);
 973     tcc_define_symbol(s, "arm_elf", NULL);
 974     tcc_define_symbol(s, "__arm__", NULL);
 975     tcc_define_symbol(s, "__arm", NULL);
 976     tcc_define_symbol(s, "arm", NULL);
 977     tcc_define_symbol(s, "__APCS_32__", NULL);
 978     tcc_define_symbol(s, "__ARMEL__", NULL);
 979 #if defined(TCC_ARM_EABI)
 980     tcc_define_symbol(s, "__ARM_EABI__", NULL);
 981 #endif
 982 #if defined(TCC_ARM_HARDFLOAT)
 983     s->float_abi = ARM_HARD_FLOAT;
 984     tcc_define_symbol(s, "__ARM_PCS_VFP", NULL);
 985 #else
 986     s->float_abi = ARM_SOFTFP_FLOAT;
 987 #endif
 988 #elif defined(TCC_TARGET_ARM64)
 989     tcc_define_symbol(s, "__aarch64__", NULL);
 990 #endif
 991
 992 #ifdef TCC_TARGET_PE
 993     tcc_define_symbol(s, "_WIN32", NULL);
 994 # ifdef TCC_TARGET_X86_64
 995     tcc_define_symbol(s, "_WIN64", NULL);
 996 # endif
 997 #else
 998     tcc_define_symbol(s, "__unix__", NULL);
 999     tcc_define_symbol(s, "__unix", NULL);
1000     tcc_define_symbol(s, "unix", NULL);
1001 # if defined(__linux)
1002     tcc_define_symbol(s, "__linux__", NULL);
1003     tcc_define_symbol(s, "__linux", NULL);
1004 # endif
1005 # if defined(__FreeBSD__)
1006 #  define str(s) #s
1007     tcc_define_symbol(s, "__FreeBSD__", str( __FreeBSD__));
1008 #  undef str
1009 # endif
1010 # if defined(__FreeBSD_kernel__)
1011     tcc_define_symbol(s, "__FreeBSD_kernel__", NULL);
1012 # endif
1013 #endif
1014
1015     /* TinyCC & gcc defines */
1016 #if defined TCC_TARGET_PE && defined TCC_TARGET_X86_64
1017     tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned long long");
1018     tcc_define_symbol(s, "__PTRDIFF_TYPE__", "long long");
1019 #else
1020     tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned long");
1021     tcc_define_symbol(s, "__PTRDIFF_TYPE__", "long");
1022 #endif
1023
1024 #ifdef TCC_TARGET_PE
1025     tcc_define_symbol(s, "__WCHAR_TYPE__", "unsigned short");
1026     tcc_define_symbol(s, "__WINT_TYPE__", "unsigned short");
1027 #else
1028     tcc_define_symbol(s, "__WCHAR_TYPE__", "int");
1029     /* wint_t is unsigned int by default, but (signed) int on BSDs
1030        and unsigned short on windows.  Other OSes might have still
1031        other conventions, sigh.  */
1032 #if defined(__FreeBSD__) || defined (__FreeBSD_kernel__)
1033     tcc_define_symbol(s, "__WINT_TYPE__", "int");
1034 #else
1035     tcc_define_symbol(s, "__WINT_TYPE__", "unsigned int");
1036 #endif
1037 #endif
1038
1039 #ifndef TCC_TARGET_PE
1040     /* glibc defines */
1041     tcc_define_symbol(s, "__REDIRECT(name, proto, alias)", "name proto __asm__ (#alias)");
1042     tcc_define_symbol(s, "__REDIRECT_NTH(name, proto, alias)", "name proto __asm__ (#alias) __THROW");
1043     /* paths for crt objects */
1044     tcc_split_path(s, (void ***)&s->crt_paths, &s->nb_crt_paths, CONFIG_TCC_CRTPREFIX);
1045 #endif
1046
1047     /* no section zero */
1048     dynarray_add((void ***)&s->sections, &s->nb_sections, NULL);
1049
1050     /* create standard sections */
1051     text_section = new_section(s, ".text", SHT_PROGBITS, SHF_ALLOC | SHF_EXECINSTR);
1052     data_section = new_section(s, ".data", SHT_PROGBITS, SHF_ALLOC | SHF_WRITE);
1053     bss_section = new_section(s, ".bss", SHT_NOBITS, SHF_ALLOC | SHF_WRITE);
1054
1055     /* symbols are always generated for linking stage */
1056     symtab_section = new_symtab(s, ".symtab", SHT_SYMTAB, 0,
1057                                 ".strtab",
1058                                 ".hashtab", SHF_PRIVATE);
1059     strtab_section = symtab_section->link;
1060     s->symtab = symtab_section;
1061
1062     /* private symbol table for dynamic symbols */
1063     s->dynsymtab_section = new_symtab(s, ".dynsymtab", SHT_SYMTAB, SHF_PRIVATE,
1064                                       ".dynstrtab",
1065                                       ".dynhashtab", SHF_PRIVATE);
1066     s->alacarte_link = 1;
1067     s->nocommon = 1;
1068     s->warn_implicit_function_declaration = 1;
1069
1070 #ifdef CHAR_IS_UNSIGNED
1071     s->char_is_unsigned = 1;
1072 #endif
1073     /* enable this if you want symbols with leading underscore on windows: */
1074 #if 0 /* def TCC_TARGET_PE */
1075     s->leading_underscore = 1;
1076 #endif
1077 #ifdef TCC_TARGET_I386
1078     s->seg_size = 32;
1079 #endif
1080 #ifdef TCC_IS_NATIVE
1081     s->runtime_main = "main";
1082 #endif
1083     return s;
1084 }
1085
1086 LIBTCCAPI void tcc_delete(TCCState *s1)
1087 {
1088     int i;
1089
1090     tcc_cleanup();
1091
1092     /* free all sections */
1093     for(i = 1; i < s1->nb_sections; i++)
1094         free_section(s1->sections[i]);
1095     dynarray_reset(&s1->sections, &s1->nb_sections);
1096
1097     for(i = 0; i < s1->nb_priv_sections; i++)
1098         free_section(s1->priv_sections[i]);
1099     dynarray_reset(&s1->priv_sections, &s1->nb_priv_sections);
1100
1101     /* free any loaded DLLs */
1102 #ifdef TCC_IS_NATIVE
1103     for ( i = 0; i < s1->nb_loaded_dlls; i++) {
1104         DLLReference *ref = s1->loaded_dlls[i];
1105         if ( ref->handle )
1106             dlclose(ref->handle);
1107     }
1108 #endif
1109
1110     /* free loaded dlls array */
1111     dynarray_reset(&s1->loaded_dlls, &s1->nb_loaded_dlls);
1112
1113     /* free library paths */
1114     dynarray_reset(&s1->library_paths, &s1->nb_library_paths);
1115     dynarray_reset(&s1->crt_paths, &s1->nb_crt_paths);
1116
1117     /* free include paths */
1118     dynarray_reset(&s1->cached_includes, &s1->nb_cached_includes);
1119     dynarray_reset(&s1->include_paths, &s1->nb_include_paths);
1120     dynarray_reset(&s1->sysinclude_paths, &s1->nb_sysinclude_paths);
1121
1122     tcc_free(s1->tcc_lib_path);
1123     tcc_free(s1->soname);
1124     tcc_free(s1->rpath);
1125     tcc_free(s1->init_symbol);
1126     tcc_free(s1->fini_symbol);
1127     tcc_free(s1->outfile);
1128     tcc_free(s1->deps_outfile);
1129     dynarray_reset(&s1->files, &s1->nb_files);
1130     dynarray_reset(&s1->target_deps, &s1->nb_target_deps);
1131
1132 #ifdef TCC_IS_NATIVE
1133 # ifdef HAVE_SELINUX
1134     munmap (s1->write_mem, s1->mem_size);
1135     munmap (s1->runtime_mem, s1->mem_size);
1136 # else
1137     tcc_free(s1->runtime_mem);
1138 # endif
1139 #endif
1140
1141     if(s1->sym_attrs) tcc_free(s1->sym_attrs);
1142
1143     tcc_free(s1);
1144 }
1145
1146 LIBTCCAPI int tcc_add_include_path(TCCState *s, const char *pathname)
1147 {
1148     tcc_split_path(s, (void ***)&s->include_paths, &s->nb_include_paths, pathname);
1149     return 0;
1150 }
1151
1152 LIBTCCAPI int tcc_add_sysinclude_path(TCCState *s, const char *pathname)
1153 {
1154     tcc_split_path(s, (void ***)&s->sysinclude_paths, &s->nb_sysinclude_paths, pathname);
1155     return 0;
1156 }
1157
1158 ST_FUNC int tcc_add_file_internal(TCCState *s1, const char *filename, int flags, int filetype)
1159 {
1160     ElfW(Ehdr) ehdr;
1161     int fd, ret, size;
1162
1163     parse_flags = 0;
1164 #ifdef CONFIG_TCC_ASM
1165     /* if .S file, define __ASSEMBLER__ like gcc does */
1166     if ((filetype == TCC_FILETYPE_ASM) || (filetype == TCC_FILETYPE_ASM_PP)) {
1167         tcc_define_symbol(s1, "__ASSEMBLER__", NULL);
1168         parse_flags = PARSE_FLAG_ASM_FILE;
1169     }
1170 #endif
1171
1172     /* open the file */
1173     ret = tcc_open(s1, filename);
1174     if (ret < 0) {
1175         if (flags & AFF_PRINT_ERROR)
1176             tcc_error_noabort("file '%s' not found", filename);
1177         return ret;
1178     }
1179
1180     /* update target deps */
1181     dynarray_add((void ***)&s1->target_deps, &s1->nb_target_deps,
1182             tcc_strdup(filename));
1183
1184     if (flags & AFF_PREPROCESS) {
1185         ret = tcc_preprocess(s1);
1186         goto the_end;
1187     }
1188
1189     if (filetype == TCC_FILETYPE_C) {
1190         /* C file assumed */
1191         ret = tcc_compile(s1);
1192         goto the_end;
1193     }
1194
1195 #ifdef CONFIG_TCC_ASM
1196     if (filetype == TCC_FILETYPE_ASM_PP) {
1197         /* non preprocessed assembler */
1198         ret = tcc_assemble(s1, 1);
1199         goto the_end;
1200     }
1201
1202     if (filetype == TCC_FILETYPE_ASM) {
1203         /* preprocessed assembler */
1204         ret = tcc_assemble(s1, 0);
1205         goto the_end;
1206     }
1207 #endif
1208
1209     fd = file->fd;
1210     /* assume executable format: auto guess file type */
1211     size = read(fd, &ehdr, sizeof(ehdr));
1212     lseek(fd, 0, SEEK_SET);
1213     if (size <= 0) {
1214         tcc_error_noabort("could not read header");
1215         goto the_end;
1216     }
1217
1218     if (size == sizeof(ehdr) &&
1219         ehdr.e_ident[0] == ELFMAG0 &&
1220         ehdr.e_ident[1] == ELFMAG1 &&
1221         ehdr.e_ident[2] == ELFMAG2 &&
1222         ehdr.e_ident[3] == ELFMAG3) {
1223
1224         /* do not display line number if error */
1225         file->line_num = 0;
1226         if (ehdr.e_type == ET_REL) {
1227             ret = tcc_load_object_file(s1, fd, 0);
1228             goto the_end;
1229
1230         }
1231 #ifndef TCC_TARGET_PE
1232         if (ehdr.e_type == ET_DYN) {
1233             if (s1->output_type == TCC_OUTPUT_MEMORY) {
1234 #ifdef TCC_IS_NATIVE
1235                 void *h;
1236                 h = dlopen(filename, RTLD_GLOBAL | RTLD_LAZY);
1237                 if (h)
1238 #endif
1239                     ret = 0;
1240             } else {
1241                 ret = tcc_load_dll(s1, fd, filename,
1242                                    (flags & AFF_REFERENCED_DLL) != 0);
1243             }
1244             goto the_end;
1245         }
1246 #endif
1247         tcc_error_noabort("unrecognized ELF file");
1248         goto the_end;
1249     }
1250
1251     if (memcmp((char *)&ehdr, ARMAG, 8) == 0) {
1252         file->line_num = 0; /* do not display line number if error */
1253         ret = tcc_load_archive(s1, fd);
1254         goto the_end;
1255     }
1256
1257 #ifdef TCC_TARGET_COFF
1258     if (*(uint16_t *)(&ehdr) == COFF_C67_MAGIC) {
1259         ret = tcc_load_coff(s1, fd);
1260         goto the_end;
1261     }
1262 #endif
1263
1264 #ifdef TCC_TARGET_PE
1265     ret = pe_load_file(s1, filename, fd);
1266 #else
1267     /* as GNU ld, consider it is an ld script if not recognized */
1268     ret = tcc_load_ldscript(s1);
1269 #endif
1270     if (ret < 0)
1271         tcc_error_noabort("unrecognized file type");
1272
1273 the_end:
1274     tcc_close();
1275     return ret;
1276 }
1277
1278 LIBTCCAPI int tcc_add_file(TCCState *s, const char *filename, int filetype)
1279 {
1280     if (s->output_type == TCC_OUTPUT_PREPROCESS)
1281         return tcc_add_file_internal(s, filename, AFF_PRINT_ERROR | AFF_PREPROCESS, filetype);
1282     else
1283         return tcc_add_file_internal(s, filename, AFF_PRINT_ERROR, filetype);
1284 }
1285
1286 LIBTCCAPI int tcc_add_library_path(TCCState *s, const char *pathname)
1287 {
1288     tcc_split_path(s, (void ***)&s->library_paths, &s->nb_library_paths, pathname);
1289     return 0;
1290 }
1291
1292 static int tcc_add_library_internal(TCCState *s, const char *fmt,
1293     const char *filename, int flags, char **paths, int nb_paths)
1294 {
1295     char buf[1024];
1296     int i;
1297
1298     for(i = 0; i < nb_paths; i++) {
1299         snprintf(buf, sizeof(buf), fmt, paths[i], filename);
1300         if (tcc_add_file_internal(s, buf, flags, TCC_FILETYPE_BINARY) == 0)
1301             return 0;
1302     }
1303     return -1;
1304 }
1305
1306 /* find and load a dll. Return non zero if not found */
1307 /* XXX: add '-rpath' option support ? */
1308 ST_FUNC int tcc_add_dll(TCCState *s, const char *filename, int flags)
1309 {
1310     return tcc_add_library_internal(s, "%s/%s", filename, flags,
1311         s->library_paths, s->nb_library_paths);
1312 }
1313
1314 ST_FUNC int tcc_add_crt(TCCState *s, const char *filename)
1315 {
1316     if (-1 == tcc_add_library_internal(s, "%s/%s",
1317         filename, 0, s->crt_paths, s->nb_crt_paths))
1318         tcc_error_noabort("file '%s' not found", filename);
1319     return 0;
1320 }
1321
1322 /* the library name is the same as the argument of the '-l' option */
1323 LIBTCCAPI int tcc_add_library(TCCState *s, const char *libraryname)
1324 {
1325 #ifdef TCC_TARGET_PE
1326     const char *libs[] = { "%s/%s.def", "%s/lib%s.def", "%s/%s.dll", "%s/lib%s.dll", "%s/lib%s.a", NULL };
1327     const char **pp = s->static_link ? libs + 4 : libs;
1328 #else
1329     const char *libs[] = { "%s/lib%s.so", "%s/lib%s.a", NULL };
1330     const char **pp = s->static_link ? libs + 1 : libs;
1331 #endif
1332     while (*pp) {
1333         if (0 == tcc_add_library_internal(s, *pp,
1334             libraryname, 0, s->library_paths, s->nb_library_paths))
1335             return 0;
1336         ++pp;
1337     }
1338     return -1;
1339 }
1340
1341 LIBTCCAPI int tcc_add_symbol(TCCState *s, const char *name, const void *val)
1342 {
1343 #ifdef TCC_TARGET_PE
1344     /* On x86_64 'val' might not be reachable with a 32bit offset.
1345        So it is handled here as if it were in a DLL. */
1346     pe_putimport(s, 0, name, (uintptr_t)val);
1347 #else
1348     add_elf_sym(symtab_section, (uintptr_t)val, 0,
1349         ELFW(ST_INFO)(STB_GLOBAL, STT_NOTYPE), 0,
1350         SHN_ABS, name);
1351 #endif
1352     return 0;
1353 }
1354
1355 LIBTCCAPI int tcc_set_output_type(TCCState *s, int output_type)
1356 {
1357     s->output_type = output_type;
1358     if (output_type == TCC_OUTPUT_PREPROCESS)
1359         print_defines();
1360
1361     if (!s->nostdinc) {
1362         /* default include paths */
1363         /* -isystem paths have already been handled */
1364         tcc_add_sysinclude_path(s, CONFIG_TCC_SYSINCLUDEPATHS);
1365     }
1366
1367     /* if bound checking, then add corresponding sections */
1368 #ifdef CONFIG_TCC_BCHECK
1369     if (s->do_bounds_check) {
1370         /* define symbol */
1371         tcc_define_symbol(s, "__BOUNDS_CHECKING_ON", NULL);
1372         /* create bounds sections */
1373         bounds_section = new_section(s, ".bounds",
1374                                      SHT_PROGBITS, SHF_ALLOC);
1375         lbounds_section = new_section(s, ".lbounds",
1376                                       SHT_PROGBITS, SHF_ALLOC);
1377     }
1378 #endif
1379
1380     if (s->char_is_unsigned) {
1381         tcc_define_symbol(s, "__CHAR_UNSIGNED__", NULL);
1382     }
1383
1384     /* add debug sections */
1385     if (s->do_debug) {
1386         /* stab symbols */
1387         stab_section = new_section(s, ".stab", SHT_PROGBITS, 0);
1388         stab_section->sh_entsize = sizeof(Stab_Sym);
1389         stabstr_section = new_section(s, ".stabstr", SHT_STRTAB, 0);
1390         put_elf_str(stabstr_section, "");
1391         stab_section->link = stabstr_section;
1392         /* put first entry */
1393         put_stabs("", 0, 0, 0, 0);
1394     }
1395
1396     tcc_add_library_path(s, CONFIG_TCC_LIBPATHS);
1397 #ifdef TCC_TARGET_PE
1398 # ifdef _WIN32
1399     tcc_add_systemdir(s);
1400 # endif
1401 #else
1402     /* add libc crt1/crti objects */
1403     if ((output_type == TCC_OUTPUT_EXE || output_type == TCC_OUTPUT_DLL) &&
1404         !s->nostdlib) {
1405         if (output_type != TCC_OUTPUT_DLL)
1406             tcc_add_crt(s, "crt1.o");
1407         tcc_add_crt(s, "crti.o");
1408     }
1409 #endif
1410
1411 #ifdef CONFIG_TCC_BCHECK
1412     if (s->do_bounds_check && (output_type == TCC_OUTPUT_EXE))
1413     {
1414         /* force a bcheck.o linking */
1415         addr_t func = TOK___bound_init;
1416         Sym *sym = external_global_sym(func, &func_old_type, 0);
1417         if (!sym->c)
1418             put_extern_sym(sym, NULL, 0, 0);
1419     }
1420 #endif
1421     return 0;
1422 }
1423
1424 LIBTCCAPI void tcc_set_lib_path(TCCState *s, const char *path)
1425 {
1426     tcc_free(s->tcc_lib_path);
1427     s->tcc_lib_path = tcc_strdup(path);
1428 }
1429
1430 #define WD_ALL    0x0001 /* warning is activated when using -Wall */
1431 #define FD_INVERT 0x0002 /* invert value before storing */
1432
1433 typedef struct FlagDef {
1434     uint16_t offset;
1435     uint16_t flags;
1436     const char *name;
1437 } FlagDef;
1438
1439 static const FlagDef warning_defs[] = {
1440     { offsetof(TCCState, warn_unsupported), 0, "unsupported" },
1441     { offsetof(TCCState, warn_write_strings), 0, "write-strings" },
1442     { offsetof(TCCState, warn_error), 0, "error" },
1443     { offsetof(TCCState, warn_implicit_function_declaration), WD_ALL,
1444       "implicit-function-declaration" },
1445 };
1446
1447 ST_FUNC int set_flag(TCCState *s, const FlagDef *flags, int nb_flags,
1448                     const char *name, int value)
1449 {
1450     int i;
1451     const FlagDef *p;
1452     const char *r;
1453
1454     r = name;
1455     if (r[0] == 'n' && r[1] == 'o' && r[2] == '-') {
1456         r += 3;
1457         value = !value;
1458     }
1459     for(i = 0, p = flags; i < nb_flags; i++, p++) {
1460         if (!strcmp(r, p->name))
1461             goto found;
1462     }
1463     return -1;
1464  found:
1465     if (p->flags & FD_INVERT)
1466         value = !value;
1467     *(int *)((uint8_t *)s + p->offset) = value;
1468     return 0;
1469 }
1470
1471 /* set/reset a warning */
1472 static int tcc_set_warning(TCCState *s, const char *warning_name, int value)
1473 {
1474     int i;
1475     const FlagDef *p;
1476
1477     if (!strcmp(warning_name, "all")) {
1478         for(i = 0, p = warning_defs; i < countof(warning_defs); i++, p++) {
1479             if (p->flags & WD_ALL)
1480                 *(int *)((uint8_t *)s + p->offset) = 1;
1481         }
1482         return 0;
1483     } else {
1484         return set_flag(s, warning_defs, countof(warning_defs),
1485                         warning_name, value);
1486     }
1487 }
1488
1489 static const FlagDef flag_defs[] = {
1490     { offsetof(TCCState, char_is_unsigned), 0, "unsigned-char" },
1491     { offsetof(TCCState, char_is_unsigned), FD_INVERT, "signed-char" },
1492     { offsetof(TCCState, nocommon), FD_INVERT, "common" },
1493     { offsetof(TCCState, leading_underscore), 0, "leading-underscore" },
1494     { offsetof(TCCState, ms_extensions), 0, "ms-extensions" },
1495     { offsetof(TCCState, old_struct_init_code), 0, "old-struct-init-code" },
1496     { offsetof(TCCState, dollars_in_identifiers), 0, "dollars-in-identifiers" },
1497 };
1498
1499 /* set/reset a flag */
1500 static int tcc_set_flag(TCCState *s, const char *flag_name, int value)
1501 {
1502     return set_flag(s, flag_defs, countof(flag_defs),
1503                     flag_name, value);
1504 }
1505
1506
1507 static int strstart(const char *val, const char **str)
1508 {
1509     const char *p, *q;
1510     p = *str;
1511     q = val;
1512     while (*q) {
1513         if (*p != *q)
1514             return 0;
1515         p++;
1516         q++;
1517     }
1518     *str = p;
1519     return 1;
1520 }
1521
1522 /* Like strstart, but automatically takes into account that ld options can
1523  *
1524  * - start with double or single dash (e.g. '--soname' or '-soname')
1525  * - arguments can be given as separate or after '=' (e.g. '-Wl,-soname,x.so'
1526  *   or '-Wl,-soname=x.so')
1527  *
1528  * you provide `val` always in 'option[=]' form (no leading -)
1529  */
1530 static int link_option(const char *str, const char *val, const char **ptr)
1531 {
1532     const char *p, *q;
1533
1534     /* there should be 1 or 2 dashes */
1535     if (*str++ != '-')
1536         return 0;
1537     if (*str == '-')
1538         str++;
1539
1540     /* then str & val should match (potentialy up to '=') */
1541     p = str;
1542     q = val;
1543
1544     while (*q != '\0' && *q != '=') {
1545         if (*p != *q)
1546             return 0;
1547         p++;
1548         q++;
1549     }
1550
1551     /* '=' near eos means ',' or '=' is ok */
1552     if (*q == '=') {
1553         if (*p != ',' && *p != '=')
1554             return 0;
1555         p++;
1556         q++;
1557     }
1558
1559     if (ptr)
1560         *ptr = p;
1561     return 1;
1562 }
1563
1564 static const char *skip_linker_arg(const char **str)
1565 {
1566     const char *s1 = *str;
1567     const char *s2 = strchr(s1, ',');
1568     *str = s2 ? s2++ : (s2 = s1 + strlen(s1));
1569     return s2;
1570 }
1571
1572 static char *copy_linker_arg(const char *p)
1573 {
1574     const char *q = p;
1575     skip_linker_arg(&q);
1576     return pstrncpy(tcc_malloc(q - p + 1), p, q - p);
1577 }
1578
1579 /* set linker options */
1580 static int tcc_set_linker(TCCState *s, const char *option)
1581 {
1582     while (option && *option) {
1583
1584         const char *p = option;
1585         char *end = NULL;
1586         int ignoring = 0;
1587
1588         if (link_option(option, "Bsymbolic", &p)) {
1589             s->symbolic = 1;
1590         } else if (link_option(option, "nostdlib", &p)) {
1591             s->nostdlib = 1;
1592         } else if (link_option(option, "fini=", &p)) {
1593             s->fini_symbol = copy_linker_arg(p);
1594             ignoring = 1;
1595         } else if (link_option(option, "image-base=", &p)
1596                 || link_option(option, "Ttext=", &p)) {
1597             s->text_addr = strtoull(p, &end, 16);
1598             s->has_text_addr = 1;
1599         } else if (link_option(option, "init=", &p)) {
1600             s->init_symbol = copy_linker_arg(p);
1601             ignoring = 1;
1602         } else if (link_option(option, "oformat=", &p)) {
1603 #if defined(TCC_TARGET_PE)
1604             if (strstart("pe-", &p)) {
1605 #elif defined(TCC_TARGET_ARM64) || defined(TCC_TARGET_X86_64)
1606             if (strstart("elf64-", &p)) {
1607 #else
1608             if (strstart("elf32-", &p)) {
1609 #endif
1610                 s->output_format = TCC_OUTPUT_FORMAT_ELF;
1611             } else if (!strcmp(p, "binary")) {
1612                 s->output_format = TCC_OUTPUT_FORMAT_BINARY;
1613 #ifdef TCC_TARGET_COFF
1614             } else if (!strcmp(p, "coff")) {
1615                 s->output_format = TCC_OUTPUT_FORMAT_COFF;
1616 #endif
1617             } else
1618                 goto err;
1619
1620         } else if (link_option(option, "as-needed", &p)) {
1621             ignoring = 1;
1622         } else if (link_option(option, "O", &p)) {
1623             ignoring = 1;
1624         } else if (link_option(option, "rpath=", &p)) {
1625             s->rpath = copy_linker_arg(p);
1626         } else if (link_option(option, "section-alignment=", &p)) {
1627             s->section_align = strtoul(p, &end, 16);
1628         } else if (link_option(option, "soname=", &p)) {
1629             s->soname = copy_linker_arg(p);
1630 #ifdef TCC_TARGET_PE
1631         } else if (link_option(option, "file-alignment=", &p)) {
1632             s->pe_file_align = strtoul(p, &end, 16);
1633         } else if (link_option(option, "stack=", &p)) {
1634             s->pe_stack_size = strtoul(p, &end, 10);
1635         } else if (link_option(option, "subsystem=", &p)) {
1636 #if defined(TCC_TARGET_I386) || defined(TCC_TARGET_X86_64)
1637             if (!strcmp(p, "native")) {
1638                 s->pe_subsystem = 1;
1639             } else if (!strcmp(p, "console")) {
1640                 s->pe_subsystem = 3;
1641             } else if (!strcmp(p, "gui")) {
1642                 s->pe_subsystem = 2;
1643             } else if (!strcmp(p, "posix")) {
1644                 s->pe_subsystem = 7;
1645             } else if (!strcmp(p, "efiapp")) {
1646                 s->pe_subsystem = 10;
1647             } else if (!strcmp(p, "efiboot")) {
1648                 s->pe_subsystem = 11;
1649             } else if (!strcmp(p, "efiruntime")) {
1650                 s->pe_subsystem = 12;
1651             } else if (!strcmp(p, "efirom")) {
1652                 s->pe_subsystem = 13;
1653 #elif defined(TCC_TARGET_ARM)
1654             if (!strcmp(p, "wince")) {
1655                 s->pe_subsystem = 9;
1656 #endif
1657             } else
1658                 goto err;
1659 #endif
1660         } else
1661             goto err;
1662
1663         if (ignoring && s->warn_unsupported) err: {
1664             char buf[100], *e;
1665             pstrcpy(buf, sizeof buf, e = copy_linker_arg(option)), tcc_free(e);
1666             if (ignoring)
1667                 tcc_warning("unsupported linker option '%s'", buf);
1668             else
1669                 tcc_error("unsupported linker option '%s'", buf);
1670         }
1671         option = skip_linker_arg(&p);
1672     }
1673     return 0;
1674 }
1675
1676 typedef struct TCCOption {
1677     const char *name;
1678     uint16_t index;
1679     uint16_t flags;
1680 } TCCOption;
1681
1682 enum {
1683     TCC_OPTION_HELP,
1684     TCC_OPTION_I,
1685     TCC_OPTION_D,
1686     TCC_OPTION_U,
1687     TCC_OPTION_P,
1688     TCC_OPTION_L,
1689     TCC_OPTION_B,
1690     TCC_OPTION_l,
1691     TCC_OPTION_bench,
1692     TCC_OPTION_bt,
1693     TCC_OPTION_b,
1694     TCC_OPTION_g,
1695     TCC_OPTION_c,
1696     TCC_OPTION_dumpversion,
1697     TCC_OPTION_d,
1698     TCC_OPTION_float_abi,
1699     TCC_OPTION_static,
1700     TCC_OPTION_std,
1701     TCC_OPTION_shared,
1702     TCC_OPTION_soname,
1703     TCC_OPTION_o,
1704     TCC_OPTION_r,
1705     TCC_OPTION_s,
1706     TCC_OPTION_traditional,
1707     TCC_OPTION_Wl,
1708     TCC_OPTION_W,
1709     TCC_OPTION_O,
1710     TCC_OPTION_m,
1711     TCC_OPTION_f,
1712     TCC_OPTION_isystem,
1713     TCC_OPTION_iwithprefix,
1714     TCC_OPTION_nostdinc,
1715     TCC_OPTION_nostdlib,
1716     TCC_OPTION_print_search_dirs,
1717     TCC_OPTION_rdynamic,
1718     TCC_OPTION_pedantic,
1719     TCC_OPTION_pthread,
1720     TCC_OPTION_run,
1721     TCC_OPTION_v,
1722     TCC_OPTION_w,
1723     TCC_OPTION_pipe,
1724     TCC_OPTION_E,
1725     TCC_OPTION_MD,
1726     TCC_OPTION_MF,
1727     TCC_OPTION_x,
1728 };
1729
1730 #define TCC_OPTION_HAS_ARG 0x0001
1731 #define TCC_OPTION_NOSEP   0x0002 /* cannot have space before option and arg */
1732
1733 static const TCCOption tcc_options[] = {
1734     { "h", TCC_OPTION_HELP, 0 },
1735     { "-help", TCC_OPTION_HELP, 0 },
1736     { "?", TCC_OPTION_HELP, 0 },
1737     { "I", TCC_OPTION_I, TCC_OPTION_HAS_ARG },
1738     { "D", TCC_OPTION_D, TCC_OPTION_HAS_ARG },
1739     { "U", TCC_OPTION_U, TCC_OPTION_HAS_ARG },
1740     { "P", TCC_OPTION_P, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1741     { "L", TCC_OPTION_L, TCC_OPTION_HAS_ARG },
1742     { "B", TCC_OPTION_B, TCC_OPTION_HAS_ARG },
1743     { "l", TCC_OPTION_l, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1744     { "bench", TCC_OPTION_bench, 0 },
1745 #ifdef CONFIG_TCC_BACKTRACE
1746     { "bt", TCC_OPTION_bt, TCC_OPTION_HAS_ARG },
1747 #endif
1748 #ifdef CONFIG_TCC_BCHECK
1749     { "b", TCC_OPTION_b, 0 },
1750 #endif
1751     { "g", TCC_OPTION_g, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1752     { "c", TCC_OPTION_c, 0 },
1753     { "dumpversion", TCC_OPTION_dumpversion, 0},
1754     { "d", TCC_OPTION_d, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1755 #ifdef TCC_TARGET_ARM
1756     { "mfloat-abi", TCC_OPTION_float_abi, TCC_OPTION_HAS_ARG },
1757 #endif
1758     { "static", TCC_OPTION_static, 0 },
1759     { "std", TCC_OPTION_std, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1760     { "shared", TCC_OPTION_shared, 0 },
1761     { "soname", TCC_OPTION_soname, TCC_OPTION_HAS_ARG },
1762     { "o", TCC_OPTION_o, TCC_OPTION_HAS_ARG },
1763     { "pedantic", TCC_OPTION_pedantic, 0},
1764     { "pthread", TCC_OPTION_pthread, 0},
1765     { "run", TCC_OPTION_run, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1766     { "rdynamic", TCC_OPTION_rdynamic, 0 },
1767     { "r", TCC_OPTION_r, 0 },
1768     { "s", TCC_OPTION_s, 0 },
1769     { "traditional", TCC_OPTION_traditional, 0 },
1770     { "Wl,", TCC_OPTION_Wl, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1771     { "W", TCC_OPTION_W, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1772     { "O", TCC_OPTION_O, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1773     { "m", TCC_OPTION_m, TCC_OPTION_HAS_ARG },
1774     { "f", TCC_OPTION_f, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1775     { "isystem", TCC_OPTION_isystem, TCC_OPTION_HAS_ARG },
1776     { "iwithprefix", TCC_OPTION_iwithprefix, TCC_OPTION_HAS_ARG },
1777     { "nostdinc", TCC_OPTION_nostdinc, 0 },
1778     { "nostdlib", TCC_OPTION_nostdlib, 0 },
1779     { "print-search-dirs", TCC_OPTION_print_search_dirs, 0 },
1780     { "v", TCC_OPTION_v, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1781     { "w", TCC_OPTION_w, 0 },
1782     { "pipe", TCC_OPTION_pipe, 0},
1783     { "E", TCC_OPTION_E, 0},
1784     { "MD", TCC_OPTION_MD, 0},
1785     { "MF", TCC_OPTION_MF, TCC_OPTION_HAS_ARG },
1786     { "x", TCC_OPTION_x, TCC_OPTION_HAS_ARG },
1787     { NULL, 0, 0 },
1788 };
1789
1790 static void parse_option_D(TCCState *s1, const char *optarg)
1791 {
1792     char *sym = tcc_strdup(optarg);
1793     char *value = strchr(sym, '=');
1794     if (value)
1795         *value++ = '\0';
1796     tcc_define_symbol(s1, sym, value);
1797     tcc_free(sym);
1798 }
1799
1800 static void args_parser_add_file(TCCState *s, const char* filename, int filetype)
1801 {
1802     int len = strlen(filename);
1803     char *p = tcc_malloc(len + 2);
1804     if (filetype) {
1805         *p = filetype;
1806     }
1807     else {
1808         /* use a file extension to detect a filetype */
1809         const char *ext = tcc_fileextension(filename);
1810         if (ext[0]) {
1811             ext++;
1812             if (!strcmp(ext, "S"))
1813                 *p = TCC_FILETYPE_ASM_PP;
1814             else
1815             if (!strcmp(ext, "s"))
1816                 *p = TCC_FILETYPE_ASM;
1817             else
1818             if (!PATHCMP(ext, "c") || !PATHCMP(ext, "i"))
1819                 *p = TCC_FILETYPE_C;
1820             else
1821                 *p = TCC_FILETYPE_BINARY;
1822         }
1823         else {
1824             *p = TCC_FILETYPE_C;
1825         }
1826     }
1827     strcpy(p+1, filename);
1828     dynarray_add((void ***)&s->files, &s->nb_files, p);
1829 }
1830
1831 PUB_FUNC int tcc_parse_args(TCCState *s, int argc, char **argv)
1832 {
1833     const TCCOption *popt;
1834     const char *optarg, *r;
1835     int run = 0;
1836     int pthread = 0;
1837     int optind = 0;
1838     int filetype = 0;
1839
1840     /* collect -Wl options for input such as "-Wl,-rpath -Wl,<path>" */
1841     CString linker_arg;
1842     cstr_new(&linker_arg);
1843
1844     while (optind < argc) {
1845
1846         r = argv[optind++];
1847         if (r[0] != '-' || r[1] == '\0') {
1848             args_parser_add_file(s, r, filetype);
1849             if (run) {
1850                 optind--;
1851                 /* argv[0] will be this file */
1852                 break;
1853             }
1854             continue;
1855         }
1856
1857         /* find option in table */
1858         for(popt = tcc_options; ; ++popt) {
1859             const char *p1 = popt->name;
1860             const char *r1 = r + 1;
1861             if (p1 == NULL)
1862                 tcc_error("invalid option -- '%s'", r);
1863             if (!strstart(p1, &r1))
1864                 continue;
1865             optarg = r1;
1866             if (popt->flags & TCC_OPTION_HAS_ARG) {
1867                 if (*r1 == '\0' && !(popt->flags & TCC_OPTION_NOSEP)) {
1868                     if (optind >= argc)
1869                         tcc_error("argument to '%s' is missing", r);
1870                     optarg = argv[optind++];
1871                 }
1872             } else if (*r1 != '\0')
1873                 continue;
1874             break;
1875         }
1876
1877         switch(popt->index) {
1878         case TCC_OPTION_HELP:
1879             return 0;
1880         case TCC_OPTION_I:
1881             if (tcc_add_include_path(s, optarg) < 0)
1882                 tcc_error("too many include paths");
1883             break;
1884         case TCC_OPTION_D:
1885             parse_option_D(s, optarg);
1886             break;
1887         case TCC_OPTION_U:
1888             tcc_undefine_symbol(s, optarg);
1889             break;
1890         case TCC_OPTION_L:
1891             tcc_add_library_path(s, optarg);
1892             break;
1893         case TCC_OPTION_B:
1894             /* set tcc utilities path (mainly for tcc development) */
1895             tcc_set_lib_path(s, optarg);
1896             break;
1897         case TCC_OPTION_l:
1898             args_parser_add_file(s, r, TCC_FILETYPE_BINARY);
1899             s->nb_libraries++;
1900             break;
1901         case TCC_OPTION_pthread:
1902             parse_option_D(s, "_REENTRANT");
1903             pthread = 1;
1904             break;
1905         case TCC_OPTION_bench:
1906             s->do_bench = 1;
1907             break;
1908 #ifdef CONFIG_TCC_BACKTRACE
1909         case TCC_OPTION_bt:
1910             tcc_set_num_callers(atoi(optarg));
1911             break;
1912 #endif
1913 #ifdef CONFIG_TCC_BCHECK
1914         case TCC_OPTION_b:
1915             s->do_bounds_check = 1;
1916             s->do_debug = 1;
1917             break;
1918 #endif
1919         case TCC_OPTION_g:
1920             s->do_debug = 1;
1921             break;
1922         case TCC_OPTION_c:
1923             if (s->output_type)
1924                 tcc_warning("-c: some compiler action already specified (%d)", s->output_type);
1925             s->output_type = TCC_OUTPUT_OBJ;
1926             break;
1927         case TCC_OPTION_d:
1928             if (*optarg != 'D') {
1929                 if (s->warn_unsupported)
1930                     goto unsupported_option;
1931                  tcc_error("invalid option -- '%s'", r);
1932             }
1933             s->dflag = 1;
1934             break;
1935 #ifdef TCC_TARGET_ARM
1936         case TCC_OPTION_float_abi:
1937             /* tcc doesn't support soft float yet */
1938             if (!strcmp(optarg, "softfp")) {
1939                 s->float_abi = ARM_SOFTFP_FLOAT;
1940                 tcc_undefine_symbol(s, "__ARM_PCS_VFP");
1941             } else if (!strcmp(optarg, "hard"))
1942                 s->float_abi = ARM_HARD_FLOAT;
1943             else
1944                 tcc_error("unsupported float abi '%s'", optarg);
1945             break;
1946 #endif
1947         case TCC_OPTION_static:
1948             s->static_link = 1;
1949             break;
1950         case TCC_OPTION_std:
1951             /* silently ignore, a current purpose:
1952                allow to use a tcc as a reference compiler for "make test" */
1953             break;
1954         case TCC_OPTION_shared:
1955             if (s->output_type)
1956                 tcc_warning("-shared: some compiler action already specified (%d)", s->output_type);
1957             s->output_type = TCC_OUTPUT_DLL;
1958             break;
1959         case TCC_OPTION_soname:
1960             s->soname = tcc_strdup(optarg);
1961             break;
1962         case TCC_OPTION_m:
1963             s->option_m = tcc_strdup(optarg);
1964             break;
1965         case TCC_OPTION_o:
1966             s->outfile = tcc_strdup(optarg);
1967             break;
1968         case TCC_OPTION_r:
1969             /* generate a .o merging several output files */
1970             if (s->output_type)
1971                 tcc_warning("-r: some compiler action already specified (%d)", s->output_type);
1972             s->option_r = 1;
1973             s->output_type = TCC_OUTPUT_OBJ;
1974             break;
1975         case TCC_OPTION_isystem:
1976             tcc_add_sysinclude_path(s, optarg);
1977             break;
1978         case TCC_OPTION_iwithprefix:
1979             if (1) {
1980                 char buf[1024];
1981                 int buf_size = sizeof(buf)-1;
1982                 char *p = &buf[0];
1983
1984                 char *sysroot = "{B}/";
1985                 int len = strlen(sysroot);
1986                 if (len > buf_size)
1987                     len = buf_size;
1988                 strncpy(p, sysroot, len);
1989                 p += len;
1990                 buf_size -= len;
1991
1992                 len = strlen(optarg);
1993                 if (len > buf_size)
1994                     len = buf_size;
1995                 strncpy(p, optarg, len+1);
1996                 tcc_add_sysinclude_path(s, buf);
1997             }
1998             break;
1999         case TCC_OPTION_nostdinc:
2000             s->nostdinc = 1;
2001             break;
2002         case TCC_OPTION_nostdlib:
2003             s->nostdlib = 1;
2004             break;
2005         case TCC_OPTION_print_search_dirs:
2006             s->print_search_dirs = 1;
2007             break;
2008         case TCC_OPTION_run:
2009             if (s->output_type)
2010                 tcc_warning("-run: some compiler action already specified (%d)", s->output_type);
2011             s->output_type = TCC_OUTPUT_MEMORY;
2012             tcc_set_options(s, optarg);
2013             run = 1;
2014             break;
2015         case TCC_OPTION_v:
2016             do ++s->verbose; while (*optarg++ == 'v');
2017             break;
2018         case TCC_OPTION_f:
2019             if (tcc_set_flag(s, optarg, 1) < 0 && s->warn_unsupported)
2020                 goto unsupported_option;
2021             break;
2022         case TCC_OPTION_W:
2023             if (tcc_set_warning(s, optarg, 1) < 0 &&
2024                 s->warn_unsupported)
2025                 goto unsupported_option;
2026             break;
2027         case TCC_OPTION_w:
2028             s->warn_none = 1;
2029             break;
2030         case TCC_OPTION_rdynamic:
2031             s->rdynamic = 1;
2032             break;
2033         case TCC_OPTION_Wl:
2034             if (linker_arg.size)
2035                 --linker_arg.size, cstr_ccat(&linker_arg, ',');
2036             cstr_cat(&linker_arg, optarg);
2037             cstr_ccat(&linker_arg, '\0');
2038             break;
2039         case TCC_OPTION_E:
2040             if (s->output_type)
2041                 tcc_warning("-E: some compiler action already specified (%d)", s->output_type);
2042             s->output_type = TCC_OUTPUT_PREPROCESS;
2043             break;
2044         case TCC_OPTION_P:
2045             s->Pflag = atoi(optarg) + 1;
2046             break;
2047         case TCC_OPTION_MD:
2048             s->gen_deps = 1;
2049             break;
2050         case TCC_OPTION_MF:
2051             s->deps_outfile = tcc_strdup(optarg);
2052             break;
2053         case TCC_OPTION_dumpversion:
2054             printf ("%s\n", TCC_VERSION);
2055             exit(0);
2056         case TCC_OPTION_s:
2057             s->do_strip = 1;
2058             break;
2059         case TCC_OPTION_traditional:
2060             break;
2061         case TCC_OPTION_x:
2062             if (*optarg == 'c')
2063                 filetype = TCC_FILETYPE_C;
2064             else
2065             if (*optarg == 'a')
2066                 filetype = TCC_FILETYPE_ASM_PP;
2067             else
2068             if (*optarg == 'n')
2069                 filetype = 0;
2070             else
2071                 tcc_warning("unsupported language '%s'", optarg);
2072             break;
2073         case TCC_OPTION_O:
2074         case TCC_OPTION_pedantic:
2075         case TCC_OPTION_pipe:
2076             /* ignored */
2077             break;
2078         default:
2079             if (s->warn_unsupported) {
2080             unsupported_option:
2081                 tcc_warning("unsupported option '%s'", r);
2082             }
2083             break;
2084         }
2085     }
2086
2087     if (s->output_type == 0)
2088         s->output_type = TCC_OUTPUT_EXE;
2089
2090     if (pthread && s->output_type != TCC_OUTPUT_OBJ)
2091         tcc_set_options(s, "-lpthread");
2092
2093     if (s->output_type == TCC_OUTPUT_EXE)
2094         tcc_set_linker(s, (const char *)linker_arg.data);
2095     cstr_free(&linker_arg);
2096
2097     return optind;
2098 }
2099
2100 LIBTCCAPI int tcc_set_options(TCCState *s, const char *str)
2101 {
2102     const char *s1;
2103     char **argv, *arg;
2104     int argc, len;
2105     int ret;
2106
2107     argc = 0, argv = NULL;
2108     for(;;) {
2109         while (is_space(*str))
2110             str++;
2111         if (*str == '\0')
2112             break;
2113         s1 = str;
2114         while (*str != '\0' && !is_space(*str))
2115             str++;
2116         len = str - s1;
2117         arg = tcc_malloc(len + 1);
2118         pstrncpy(arg, s1, len);
2119         dynarray_add((void ***)&argv, &argc, arg);
2120     }
2121     ret = tcc_parse_args(s, argc, argv);
2122     dynarray_reset(&argv, &argc);
2123     return ret;
2124 }
2125
2126 PUB_FUNC void tcc_print_stats(TCCState *s, int64_t total_time)
2127 {
2128     double tt;
2129     tt = (double)total_time / 1000000.0;
2130     if (tt < 0.001)
2131         tt = 0.001;
2132     if (total_bytes < 1)
2133         total_bytes = 1;
2134     printf("%d idents, %d lines, %d bytes, %0.3f s, %d lines/s, %0.1f MB/s\n",
2135            tok_ident - TOK_IDENT, total_lines, total_bytes,
2136            tt, (int)(total_lines / tt),
2137            total_bytes / tt / 1000000.0);
2138 }
2139
2140 PUB_FUNC void tcc_set_environment(TCCState *s)
2141 {
2142     char * path;
2143
2144     path = getenv("C_INCLUDE_PATH");
2145     if(path != NULL) {
2146         tcc_add_include_path(s, path);
2147     }
2148     path = getenv("CPATH");
2149     if(path != NULL) {
2150         tcc_add_include_path(s, path);
2151     }
2152     path = getenv("LIBRARY_PATH");
2153     if(path != NULL) {
2154         tcc_add_library_path(s, path);
2155     }
2156 }