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_C67
  49 #include "c67-gen.c"
  50 #endif
  51 #ifdef TCC_TARGET_X86_64
  52 #include "x86_64-gen.c"
  53 #endif
  54 #ifdef CONFIG_TCC_ASM
  55 #include "tccasm.c"
  56 #if defined TCC_TARGET_I386 || defined TCC_TARGET_X86_64
  57 #include "i386-asm.c"
  58 #endif
  59 #endif
  60 #ifdef TCC_TARGET_COFF
  61 #include "tcccoff.c"
  62 #endif
  63 #ifdef TCC_TARGET_PE
  64 #include "tccpe.c"
  65 #endif
  66 #endif /* ONE_SOURCE */
  67
  68 /********************************************************/
  69 #ifndef CONFIG_TCC_ASM
  70 ST_FUNC void asm_instr(void)
  71 {
  72     tcc_error("inline asm() not supported");
  73 }
  74 ST_FUNC void asm_global_instr(void)
  75 {
  76     tcc_error("inline asm() not supported");
  77 }
  78 #endif
  79
  80 /********************************************************/
  81 #ifdef _WIN32
  82 static char *normalize_slashes(char *path)
  83 {
  84     char *p;
  85     for (p = path; *p; ++p)
  86         if (*p == '\\')
  87             *p = '/';
  88     return path;
  89 }
  90
  91 static HMODULE tcc_module;
  92
  93 /* on win32, we suppose the lib and includes are at the location of 'tcc.exe' */
  94 static void tcc_set_lib_path_w32(TCCState *s)
  95 {
  96     char path[1024], *p;
  97     GetModuleFileNameA(tcc_module, path, sizeof path);
  98     p = tcc_basename(normalize_slashes(strlwr(path)));
  99     if (p - 5 > path && 0 == strncmp(p - 5, "/bin/", 5))
 100         p -= 5;
 101     else if (p > path)
 102         p--;
 103     *p = 0;
 104     tcc_set_lib_path(s, path);
 105 }
 106
 107 #ifdef TCC_TARGET_PE
 108 static void tcc_add_systemdir(TCCState *s)
 109 {
 110     char buf[1000];
 111     GetSystemDirectory(buf, sizeof buf);
 112     tcc_add_library_path(s, normalize_slashes(buf));
 113 }
 114 #endif
 115
 116 #ifndef CONFIG_TCC_STATIC
 117 void dlclose(void *p)
 118 {
 119     FreeLibrary((HMODULE)p);
 120 }
 121 #endif
 122
 123 #ifdef LIBTCC_AS_DLL
 124 BOOL WINAPI DllMain (HINSTANCE hDll, DWORD dwReason, LPVOID lpReserved)
 125 {
 126     if (DLL_PROCESS_ATTACH == dwReason)
 127         tcc_module = hDll;
 128     return TRUE;
 129 }
 130 #endif
 131 #endif
 132
 133 /********************************************************/
 134 /* copy a string and truncate it. */
 135 PUB_FUNC char *pstrcpy(char *buf, int buf_size, const char *s)
 136 {
 137     char *q, *q_end;
 138     int c;
 139
 140     if (buf_size > 0) {
 141         q = buf;
 142         q_end = buf + buf_size - 1;
 143         while (q < q_end) {
 144             c = *s++;
 145             if (c == '\0')
 146                 break;
 147             *q++ = c;
 148         }
 149         *q = '\0';
 150     }
 151     return buf;
 152 }
 153
 154 /* strcat and truncate. */
 155 PUB_FUNC char *pstrcat(char *buf, int buf_size, const char *s)
 156 {
 157     int len;
 158     len = strlen(buf);
 159     if (len < buf_size)
 160         pstrcpy(buf + len, buf_size - len, s);
 161     return buf;
 162 }
 163
 164 PUB_FUNC char *pstrncpy(char *out, const char *in, size_t num)
 165 {
 166     memcpy(out, in, num);
 167     out[num] = '\0';
 168     return out;
 169 }
 170
 171 /* extract the basename of a file */
 172 PUB_FUNC char *tcc_basename(const char *name)
 173 {
 174     char *p = strchr(name, 0);
 175     while (p > name && !IS_DIRSEP(p[-1]))
 176         --p;
 177     return p;
 178 }
 179
 180 /* extract extension part of a file
 181  *
 182  * (if no extension, return pointer to end-of-string)
 183  */
 184 PUB_FUNC char *tcc_fileextension (const char *name)
 185 {
 186     char *b = tcc_basename(name);
 187     char *e = strrchr(b, '.');
 188     return e ? e : strchr(b, 0);
 189 }
 190
 191 /********************************************************/
 192 /* memory management */
 193
 194 #undef free
 195 #undef malloc
 196 #undef realloc
 197
 198 #ifdef MEM_DEBUG
 199 ST_DATA int mem_cur_size;
 200 ST_DATA int mem_max_size;
 201 unsigned malloc_usable_size(void*);
 202 #endif
 203
 204 PUB_FUNC void tcc_free(void *ptr)
 205 {
 206 #ifdef MEM_DEBUG
 207     mem_cur_size -= malloc_usable_size(ptr);
 208 #endif
 209     free(ptr);
 210 }
 211
 212 PUB_FUNC void *tcc_malloc(unsigned long size)
 213 {
 214     void *ptr;
 215     ptr = malloc(size);
 216     if (!ptr && size)
 217         tcc_error("memory full (malloc)");
 218 #ifdef MEM_DEBUG
 219     mem_cur_size += malloc_usable_size(ptr);
 220     if (mem_cur_size > mem_max_size)
 221         mem_max_size = mem_cur_size;
 222 #endif
 223     return ptr;
 224 }
 225
 226 PUB_FUNC void *tcc_mallocz(unsigned long size)
 227 {
 228     void *ptr;
 229     ptr = tcc_malloc(size);
 230     memset(ptr, 0, size);
 231     return ptr;
 232 }
 233
 234 PUB_FUNC void *tcc_realloc(void *ptr, unsigned long size)
 235 {
 236     void *ptr1;
 237 #ifdef MEM_DEBUG
 238     mem_cur_size -= malloc_usable_size(ptr);
 239 #endif
 240     ptr1 = realloc(ptr, size);
 241     if (!ptr1 && size)
 242         tcc_error("memory full (realloc)");
 243 #ifdef MEM_DEBUG
 244     /* NOTE: count not correct if alloc error, but not critical */
 245     mem_cur_size += malloc_usable_size(ptr1);
 246     if (mem_cur_size > mem_max_size)
 247         mem_max_size = mem_cur_size;
 248 #endif
 249     return ptr1;
 250 }
 251
 252 PUB_FUNC char *tcc_strdup(const char *str)
 253 {
 254     char *ptr;
 255     ptr = tcc_malloc(strlen(str) + 1);
 256     strcpy(ptr, str);
 257     return ptr;
 258 }
 259
 260 PUB_FUNC void tcc_memstats(void)
 261 {
 262 #ifdef MEM_DEBUG
 263     printf("memory: %d bytes, max = %d bytes\n", mem_cur_size, mem_max_size);
 264 #endif
 265 }
 266
 267 #define free(p) use_tcc_free(p)
 268 #define malloc(s) use_tcc_malloc(s)
 269 #define realloc(p, s) use_tcc_realloc(p, s)
 270
 271 /********************************************************/
 272 /* dynarrays */
 273
 274 ST_FUNC void dynarray_add(void ***ptab, int *nb_ptr, void *data)
 275 {
 276     int nb, nb_alloc;
 277     void **pp;
 278
 279     nb = *nb_ptr;
 280     pp = *ptab;
 281     /* every power of two we double array size */
 282     if ((nb & (nb - 1)) == 0) {
 283         if (!nb)
 284             nb_alloc = 1;
 285         else
 286             nb_alloc = nb * 2;
 287         pp = tcc_realloc(pp, nb_alloc * sizeof(void *));
 288         *ptab = pp;
 289     }
 290     pp[nb++] = data;
 291     *nb_ptr = nb;
 292 }
 293
 294 ST_FUNC void dynarray_reset(void *pp, int *n)
 295 {
 296     void **p;
 297     for (p = *(void***)pp; *n; ++p, --*n)
 298         if (*p)
 299             tcc_free(*p);
 300     tcc_free(*(void**)pp);
 301     *(void**)pp = NULL;
 302 }
 303
 304 static void tcc_split_path(TCCState *s, void ***p_ary, int *p_nb_ary, const char *in)
 305 {
 306     const char *p;
 307     do {
 308         int c;
 309         CString str;
 310
 311         cstr_new(&str);
 312         for (p = in; c = *p, c != '\0' && c != PATHSEP; ++p) {
 313             if (c == '{' && p[1] && p[2] == '}') {
 314                 c = p[1], p += 2;
 315                 if (c == 'B')
 316                     cstr_cat(&str, s->tcc_lib_path);
 317             } else {
 318                 cstr_ccat(&str, c);
 319             }
 320         }
 321         cstr_ccat(&str, '\0');
 322         dynarray_add(p_ary, p_nb_ary, str.data);
 323         in = p+1;
 324     } while (*p);
 325 }
 326
 327 /********************************************************/
 328
 329 ST_FUNC Section *new_section(TCCState *s1, const char *name, int sh_type, int sh_flags)
 330 {
 331     Section *sec;
 332
 333     sec = tcc_mallocz(sizeof(Section) + strlen(name));
 334     strcpy(sec->name, name);
 335     sec->sh_type = sh_type;
 336     sec->sh_flags = sh_flags;
 337     switch(sh_type) {
 338     case SHT_HASH:
 339     case SHT_REL:
 340     case SHT_RELA:
 341     case SHT_DYNSYM:
 342     case SHT_SYMTAB:
 343     case SHT_DYNAMIC:
 344         sec->sh_addralign = 4;
 345         break;
 346     case SHT_STRTAB:
 347         sec->sh_addralign = 1;
 348         break;
 349     default:
 350         sec->sh_addralign = 32; /* default conservative alignment */
 351         break;
 352     }
 353
 354     if (sh_flags & SHF_PRIVATE) {
 355         dynarray_add((void ***)&s1->priv_sections, &s1->nb_priv_sections, sec);
 356     } else {
 357         sec->sh_num = s1->nb_sections;
 358         dynarray_add((void ***)&s1->sections, &s1->nb_sections, sec);
 359     }
 360
 361     return sec;
 362 }
 363
 364 static void free_section(Section *s)
 365 {
 366     tcc_free(s->data);
 367 }
 368
 369 /* realloc section and set its content to zero */
 370 ST_FUNC void section_realloc(Section *sec, unsigned long new_size)
 371 {
 372     unsigned long size;
 373     unsigned char *data;
 374
 375     size = sec->data_allocated;
 376     if (size == 0)
 377         size = 1;
 378     while (size < new_size)
 379         size = size * 2;
 380     data = tcc_realloc(sec->data, size);
 381     memset(data + sec->data_allocated, 0, size - sec->data_allocated);
 382     sec->data = data;
 383     sec->data_allocated = size;
 384 }
 385
 386 /* reserve at least 'size' bytes in section 'sec' from
 387    sec->data_offset. */
 388 ST_FUNC void *section_ptr_add(Section *sec, unsigned long size)
 389 {
 390     unsigned long offset, offset1;
 391
 392     offset = sec->data_offset;
 393     offset1 = offset + size;
 394     if (offset1 > sec->data_allocated)
 395         section_realloc(sec, offset1);
 396     sec->data_offset = offset1;
 397     return sec->data + offset;
 398 }
 399
 400 /* reserve at least 'size' bytes from section start */
 401 ST_FUNC void section_reserve(Section *sec, unsigned long size)
 402 {
 403     if (size > sec->data_allocated)
 404         section_realloc(sec, size);
 405     if (size > sec->data_offset)
 406         sec->data_offset = size;
 407 }
 408
 409 /* return a reference to a section, and create it if it does not
 410    exists */
 411 ST_FUNC Section *find_section(TCCState *s1, const char *name)
 412 {
 413     Section *sec;
 414     int i;
 415     for(i = 1; i < s1->nb_sections; i++) {
 416         sec = s1->sections[i];
 417         if (!strcmp(name, sec->name))
 418             return sec;
 419     }
 420     /* sections are created as PROGBITS */
 421     return new_section(s1, name, SHT_PROGBITS, SHF_ALLOC);
 422 }
 423
 424 /* update sym->c so that it points to an external symbol in section
 425    'section' with value 'value' */
 426 ST_FUNC void put_extern_sym2(Sym *sym, Section *section,
 427                             addr_t value, unsigned long size,
 428                             int can_add_underscore)
 429 {
 430     int sym_type, sym_bind, sh_num, info, other;
 431     ElfW(Sym) *esym;
 432     const char *name;
 433     char buf1[256];
 434
 435     if (section == NULL)
 436         sh_num = SHN_UNDEF;
 437     else if (section == SECTION_ABS)
 438         sh_num = SHN_ABS;
 439     else
 440         sh_num = section->sh_num;
 441
 442     if ((sym->type.t & VT_BTYPE) == VT_FUNC) {
 443         sym_type = STT_FUNC;
 444     } else if ((sym->type.t & VT_BTYPE) == VT_VOID) {
 445         sym_type = STT_NOTYPE;
 446     } else {
 447         sym_type = STT_OBJECT;
 448     }
 449
 450     if (sym->type.t & VT_STATIC)
 451         sym_bind = STB_LOCAL;
 452     else {
 453         if (sym->type.t & VT_WEAK)
 454             sym_bind = STB_WEAK;
 455         else
 456             sym_bind = STB_GLOBAL;
 457     }
 458
 459     if (!sym->c) {
 460         name = get_tok_str(sym->v, NULL);
 461 #ifdef CONFIG_TCC_BCHECK
 462         if (tcc_state->do_bounds_check) {
 463             char buf[32];
 464
 465             /* XXX: avoid doing that for statics ? */
 466             /* if bound checking is activated, we change some function
 467                names by adding the "__bound" prefix */
 468             switch(sym->v) {
 469 #ifdef TCC_TARGET_PE
 470             /* XXX: we rely only on malloc hooks */
 471             case TOK_malloc:
 472             case TOK_free:
 473             case TOK_realloc:
 474             case TOK_memalign:
 475             case TOK_calloc:
 476 #endif
 477             case TOK_memcpy:
 478             case TOK_memmove:
 479             case TOK_memset:
 480             case TOK_strlen:
 481             case TOK_strcpy:
 482             case TOK_alloca:
 483                 strcpy(buf, "__bound_");
 484                 strcat(buf, name);
 485                 name = buf;
 486                 break;
 487             }
 488         }
 489 #endif
 490         other = 0;
 491
 492 #ifdef TCC_TARGET_PE
 493         if (sym->type.t & VT_EXPORT)
 494             other |= ST_PE_EXPORT;
 495         if (sym_type == STT_FUNC && sym->type.ref) {
 496             Sym *ref = sym->type.ref;
 497             if (ref->a.func_export)
 498                 other |= ST_PE_EXPORT;
 499             if (ref->a.func_call == FUNC_STDCALL && can_add_underscore) {
 500                 sprintf(buf1, "_%s@%d", name, ref->a.func_args * PTR_SIZE);
 501                 name = buf1;
 502                 other |= ST_PE_STDCALL;
 503                 can_add_underscore = 0;
 504             }
 505         } else {
 506             if (find_elf_sym(tcc_state->dynsymtab_section, name))
 507                 other |= ST_PE_IMPORT;
 508             if (sym->type.t & VT_IMPORT)
 509                 other |= ST_PE_IMPORT;
 510         }
 511 #else
 512         if (! (sym->type.t & VT_STATIC))
 513             other = (sym->type.t & VT_VIS_MASK) >> VT_VIS_SHIFT;
 514 #endif
 515         if (tcc_state->leading_underscore && can_add_underscore) {
 516             buf1[0] = '_';
 517             pstrcpy(buf1 + 1, sizeof(buf1) - 1, name);
 518             name = buf1;
 519         }
 520         if (sym->asm_label) {
 521             name = sym->asm_label;
 522         }
 523         info = ELFW(ST_INFO)(sym_bind, sym_type);
 524         sym->c = add_elf_sym(symtab_section, value, size, info, other, sh_num, name);
 525     } else {
 526         esym = &((ElfW(Sym) *)symtab_section->data)[sym->c];
 527         esym->st_value = value;
 528         esym->st_size = size;
 529         esym->st_shndx = sh_num;
 530     }
 531 }
 532
 533 ST_FUNC void put_extern_sym(Sym *sym, Section *section,
 534                            addr_t value, unsigned long size)
 535 {
 536     put_extern_sym2(sym, section, value, size, 1);
 537 }
 538
 539 /* add a new relocation entry to symbol 'sym' in section 's' */
 540 ST_FUNC void greloc(Section *s, Sym *sym, unsigned long offset, int type)
 541 {
 542     int c = 0;
 543     if (sym) {
 544         if (0 == sym->c)
 545             put_extern_sym(sym, NULL, 0, 0);
 546         c = sym->c;
 547     }
 548     /* now we can add ELF relocation info */
 549     put_elf_reloc(symtab_section, s, offset, type, c);
 550 }
 551
 552 /********************************************************/
 553
 554 static void strcat_vprintf(char *buf, int buf_size, const char *fmt, va_list ap)
 555 {
 556     int len;
 557     len = strlen(buf);
 558     vsnprintf(buf + len, buf_size - len, fmt, ap);
 559 }
 560
 561 static void strcat_printf(char *buf, int buf_size, const char *fmt, ...)
 562 {
 563     va_list ap;
 564     va_start(ap, fmt);
 565     strcat_vprintf(buf, buf_size, fmt, ap);
 566     va_end(ap);
 567 }
 568
 569 static void error1(TCCState *s1, int is_warning, const char *fmt, va_list ap)
 570 {
 571     char buf[2048];
 572     BufferedFile **pf, *f;
 573
 574     buf[0] = '\0';
 575     /* use upper file if inline ":asm:" or token ":paste:" */
 576     for (f = file; f && f->filename[0] == ':'; f = f->prev)
 577      ;
 578     if (f) {
 579         for(pf = s1->include_stack; pf < s1->include_stack_ptr; pf++)
 580             strcat_printf(buf, sizeof(buf), "In file included from %s:%d:\n",
 581                 (*pf)->filename, (*pf)->line_num);
 582         if (f->line_num > 0) {
 583             strcat_printf(buf, sizeof(buf), "%s:%d: ",
 584                 f->filename, f->line_num);
 585         } else {
 586             strcat_printf(buf, sizeof(buf), "%s: ",
 587                 f->filename);
 588         }
 589     } else {
 590         strcat_printf(buf, sizeof(buf), "tcc: ");
 591     }
 592     if (is_warning)
 593         strcat_printf(buf, sizeof(buf), "warning: ");
 594     else
 595         strcat_printf(buf, sizeof(buf), "error: ");
 596     strcat_vprintf(buf, sizeof(buf), fmt, ap);
 597
 598     if (!s1->error_func) {
 599         /* default case: stderr */
 600         fprintf(stderr, "%s\n", buf);
 601     } else {
 602         s1->error_func(s1->error_opaque, buf);
 603     }
 604     if (!is_warning || s1->warn_error)
 605         s1->nb_errors++;
 606 }
 607
 608 LIBTCCAPI void tcc_set_error_func(TCCState *s, void *error_opaque,
 609                         void (*error_func)(void *opaque, const char *msg))
 610 {
 611     s->error_opaque = error_opaque;
 612     s->error_func = error_func;
 613 }
 614
 615 /* error without aborting current compilation */
 616 PUB_FUNC void tcc_error_noabort(const char *fmt, ...)
 617 {
 618     TCCState *s1 = tcc_state;
 619     va_list ap;
 620
 621     va_start(ap, fmt);
 622     error1(s1, 0, fmt, ap);
 623     va_end(ap);
 624 }
 625
 626 PUB_FUNC void tcc_error(const char *fmt, ...)
 627 {
 628     TCCState *s1 = tcc_state;
 629     va_list ap;
 630
 631     va_start(ap, fmt);
 632     error1(s1, 0, fmt, ap);
 633     va_end(ap);
 634     /* better than nothing: in some cases, we accept to handle errors */
 635     if (s1->error_set_jmp_enabled) {
 636         longjmp(s1->error_jmp_buf, 1);
 637     } else {
 638         /* XXX: eliminate this someday */
 639         exit(1);
 640     }
 641 }
 642
 643 PUB_FUNC void tcc_warning(const char *fmt, ...)
 644 {
 645     TCCState *s1 = tcc_state;
 646     va_list ap;
 647
 648     if (s1->warn_none)
 649         return;
 650
 651     va_start(ap, fmt);
 652     error1(s1, 1, fmt, ap);
 653     va_end(ap);
 654 }
 655
 656 /********************************************************/
 657 /* I/O layer */
 658
 659 ST_FUNC void tcc_open_bf(TCCState *s1, const char *filename, int initlen)
 660 {
 661     BufferedFile *bf;
 662     int buflen = initlen ? initlen : IO_BUF_SIZE;
 663
 664     bf = tcc_malloc(sizeof(BufferedFile) + buflen);
 665     bf->buf_ptr = bf->buffer;
 666     bf->buf_end = bf->buffer + initlen;
 667     bf->buf_end[0] = CH_EOB; /* put eob symbol */
 668     pstrcpy(bf->filename, sizeof(bf->filename), filename);
 669 #ifdef _WIN32
 670     normalize_slashes(bf->filename);
 671 #endif
 672     bf->line_num = 1;
 673     bf->ifndef_macro = 0;
 674     bf->ifdef_stack_ptr = s1->ifdef_stack_ptr;
 675     bf->fd = -1;
 676     bf->prev = file;
 677     file = bf;
 678 }
 679
 680 ST_FUNC void tcc_close(void)
 681 {
 682     BufferedFile *bf = file;
 683     if (bf->fd > 0) {
 684         close(bf->fd);
 685         total_lines += bf->line_num;
 686     }
 687     file = bf->prev;
 688     tcc_free(bf);
 689 }
 690
 691 ST_FUNC int tcc_open(TCCState *s1, const char *filename)
 692 {
 693     int fd;
 694     if (strcmp(filename, "-") == 0)
 695         fd = 0, filename = "stdin";
 696     else
 697         fd = open(filename, O_RDONLY | O_BINARY);
 698     if ((s1->verbose == 2 && fd >= 0) || s1->verbose == 3)
 699         printf("%s %*s%s\n", fd < 0 ? "nf":"->",
 700                (int)(s1->include_stack_ptr - s1->include_stack), "", filename);
 701     if (fd < 0)
 702         return -1;
 703
 704     tcc_open_bf(s1, filename, 0);
 705     file->fd = fd;
 706     return fd;
 707 }
 708
 709 /* compile the C file opened in 'file'. Return non zero if errors. */
 710 static int tcc_compile(TCCState *s1)
 711 {
 712     Sym *define_start;
 713     SValue *pvtop;
 714     char buf[512];
 715     volatile int section_sym;
 716
 717 #ifdef INC_DEBUG
 718     printf("%s: **** new file\n", file->filename);
 719 #endif
 720     preprocess_init(s1);
 721
 722     cur_text_section = NULL;
 723     funcname = "";
 724     anon_sym = SYM_FIRST_ANOM;
 725
 726     /* file info: full path + filename */
 727     section_sym = 0; /* avoid warning */
 728     if (s1->do_debug) {
 729         section_sym = put_elf_sym(symtab_section, 0, 0,
 730                                   ELFW(ST_INFO)(STB_LOCAL, STT_SECTION), 0,
 731                                   text_section->sh_num, NULL);
 732         getcwd(buf, sizeof(buf));
 733 #ifdef _WIN32
 734         normalize_slashes(buf);
 735 #endif
 736         pstrcat(buf, sizeof(buf), "/");
 737         put_stabs_r(buf, N_SO, 0, 0,
 738                     text_section->data_offset, text_section, section_sym);
 739         put_stabs_r(file->filename, N_SO, 0, 0,
 740                     text_section->data_offset, text_section, section_sym);
 741     }
 742     /* an elf symbol of type STT_FILE must be put so that STB_LOCAL
 743        symbols can be safely used */
 744     put_elf_sym(symtab_section, 0, 0,
 745                 ELFW(ST_INFO)(STB_LOCAL, STT_FILE), 0,
 746                 SHN_ABS, file->filename);
 747
 748     /* define some often used types */
 749     int_type.t = VT_INT;
 750
 751     char_pointer_type.t = VT_BYTE;
 752     mk_pointer(&char_pointer_type);
 753
 754 #if PTR_SIZE == 4
 755     size_type.t = VT_INT;
 756 #else
 757     size_type.t = VT_LLONG;
 758 #endif
 759
 760     func_old_type.t = VT_FUNC;
 761     func_old_type.ref = sym_push(SYM_FIELD, &int_type, FUNC_CDECL, FUNC_OLD);
 762 #ifdef TCC_TARGET_ARM
 763     arm_init(s1);
 764 #endif
 765
 766 #if 0
 767     /* define 'void *alloca(unsigned int)' builtin function */
 768     {
 769         Sym *s1;
 770
 771         p = anon_sym++;
 772         sym = sym_push(p, mk_pointer(VT_VOID), FUNC_CDECL, FUNC_NEW);
 773         s1 = sym_push(SYM_FIELD, VT_UNSIGNED | VT_INT, 0, 0);
 774         s1->next = NULL;
 775         sym->next = s1;
 776         sym_push(TOK_alloca, VT_FUNC | (p << VT_STRUCT_SHIFT), VT_CONST, 0);
 777     }
 778 #endif
 779
 780     define_start = define_stack;
 781     nocode_wanted = 1;
 782
 783     if (setjmp(s1->error_jmp_buf) == 0) {
 784         s1->nb_errors = 0;
 785         s1->error_set_jmp_enabled = 1;
 786
 787         ch = file->buf_ptr[0];
 788         tok_flags = TOK_FLAG_BOL | TOK_FLAG_BOF;
 789         parse_flags = PARSE_FLAG_PREPROCESS | PARSE_FLAG_TOK_NUM;
 790         pvtop = vtop;
 791         next();
 792         decl(VT_CONST);
 793         if (tok != TOK_EOF)
 794             expect("declaration");
 795         if (pvtop != vtop)
 796             tcc_warning("internal compiler error: vstack leak? (%d)", vtop - pvtop);
 797
 798         /* end of translation unit info */
 799         if (s1->do_debug) {
 800             put_stabs_r(NULL, N_SO, 0, 0,
 801                         text_section->data_offset, text_section, section_sym);
 802         }
 803     }
 804
 805     s1->error_set_jmp_enabled = 0;
 806
 807     /* reset define stack, but leave -Dsymbols (may be incorrect if
 808        they are undefined) */
 809     free_defines(define_start);
 810
 811     gen_inline_functions();
 812
 813     sym_pop(&global_stack, NULL);
 814     sym_pop(&local_stack, NULL);
 815
 816     return s1->nb_errors != 0 ? -1 : 0;
 817 }
 818
 819 LIBTCCAPI int tcc_compile_string(TCCState *s, const char *str)
 820 {
 821     int len, ret;
 822     len = strlen(str);
 823
 824     tcc_open_bf(s, "<string>", len);
 825     memcpy(file->buffer, str, len);
 826     ret = tcc_compile(s);
 827     tcc_close();
 828     return ret;
 829 }
 830
 831 /* define a preprocessor symbol. A value can also be provided with the '=' operator */
 832 LIBTCCAPI void tcc_define_symbol(TCCState *s1, const char *sym, const char *value)
 833 {
 834     int len1, len2;
 835     /* default value */
 836     if (!value)
 837         value = "1";
 838     len1 = strlen(sym);
 839     len2 = strlen(value);
 840
 841     /* init file structure */
 842     tcc_open_bf(s1, "<define>", len1 + len2 + 1);
 843     memcpy(file->buffer, sym, len1);
 844     file->buffer[len1] = ' ';
 845     memcpy(file->buffer + len1 + 1, value, len2);
 846
 847     /* parse with define parser */
 848     ch = file->buf_ptr[0];
 849     next_nomacro();
 850     parse_define();
 851
 852     tcc_close();
 853 }
 854
 855 /* undefine a preprocessor symbol */
 856 LIBTCCAPI void tcc_undefine_symbol(TCCState *s1, const char *sym)
 857 {
 858     TokenSym *ts;
 859     Sym *s;
 860     ts = tok_alloc(sym, strlen(sym));
 861     s = define_find(ts->tok);
 862     /* undefine symbol by putting an invalid name */
 863     if (s)
 864         define_undef(s);
 865 }
 866
 867 /* cleanup all static data used during compilation */
 868 static void tcc_cleanup(void)
 869 {
 870     int i, n;
 871     CSym *def;
 872     if (NULL == tcc_state)
 873         return;
 874     tcc_state = NULL;
 875
 876     /* free -D defines */
 877     free_defines(NULL);
 878
 879     /* free tokens */
 880     n = tok_ident - TOK_IDENT;
 881     for(i = 0; i < n; i++){
 882         def = &table_ident[i]->sym_define;
 883         tcc_free(def->data);
 884         tcc_free(table_ident[i]);
 885     }
 886     tcc_free(table_ident);
 887
 888     /* free sym_pools */
 889     dynarray_reset(&sym_pools, &nb_sym_pools);
 890     /* string buffer */
 891     cstr_free(&tokcstr);
 892     /* reset symbol stack */
 893     sym_free_first = NULL;
 894     /* cleanup from error/setjmp */
 895     macro_ptr = NULL;
 896 }
 897
 898 LIBTCCAPI TCCState *tcc_new(void)
 899 {
 900     TCCState *s;
 901     char buffer[100];
 902     int a,b,c;
 903
 904     tcc_cleanup();
 905
 906     s = tcc_mallocz(sizeof(TCCState));
 907     if (!s)
 908         return NULL;
 909     tcc_state = s;
 910 #ifdef _WIN32
 911     tcc_set_lib_path_w32(s);
 912 #else
 913     tcc_set_lib_path(s, CONFIG_TCCDIR);
 914 #endif
 915     s->output_type = TCC_OUTPUT_MEMORY;
 916     preprocess_new();
 917     s->include_stack_ptr = s->include_stack;
 918
 919     /* we add dummy defines for some special macros to speed up tests
 920        and to have working defined() */
 921     define_push(TOK___LINE__, MACRO_OBJ, NULL, NULL);
 922     define_push(TOK___FILE__, MACRO_OBJ, NULL, NULL);
 923     define_push(TOK___DATE__, MACRO_OBJ, NULL, NULL);
 924     define_push(TOK___TIME__, MACRO_OBJ, NULL, NULL);
 925
 926     /* define __TINYC__ 92X  */
 927     sscanf(TCC_VERSION, "%d.%d.%d", &a, &b, &c);
 928     sprintf(buffer, "%d", a*10000 + b*100 + c);
 929     tcc_define_symbol(s, "__TINYC__", buffer);
 930
 931     /* standard defines */
 932     tcc_define_symbol(s, "__STDC__", NULL);
 933     tcc_define_symbol(s, "__STDC_VERSION__", "199901L");
 934     tcc_define_symbol(s, "__STDC_HOSTED__", NULL);
 935
 936     /* target defines */
 937 #if defined(TCC_TARGET_I386)
 938     tcc_define_symbol(s, "__i386__", NULL);
 939     tcc_define_symbol(s, "__i386", NULL);
 940     tcc_define_symbol(s, "i386", NULL);
 941 #elif defined(TCC_TARGET_X86_64)
 942     tcc_define_symbol(s, "__x86_64__", NULL);
 943 #elif defined(TCC_TARGET_ARM)
 944     tcc_define_symbol(s, "__ARM_ARCH_4__", NULL);
 945     tcc_define_symbol(s, "__arm_elf__", NULL);
 946     tcc_define_symbol(s, "__arm_elf", NULL);
 947     tcc_define_symbol(s, "arm_elf", NULL);
 948     tcc_define_symbol(s, "__arm__", NULL);
 949     tcc_define_symbol(s, "__arm", NULL);
 950     tcc_define_symbol(s, "arm", NULL);
 951     tcc_define_symbol(s, "__APCS_32__", NULL);
 952     tcc_define_symbol(s, "__ARMEL__", NULL);
 953 #if defined(TCC_ARM_EABI)
 954     tcc_define_symbol(s, "__ARM_EABI__", NULL);
 955 #endif
 956 #if defined(TCC_ARM_HARDFLOAT)
 957     s->float_abi = ARM_HARD_FLOAT;
 958     tcc_define_symbol(s, "__ARM_PCS_VFP", NULL);
 959 #else
 960     s->float_abi = ARM_SOFTFP_FLOAT;
 961 #endif
 962 #endif
 963
 964 #ifdef TCC_TARGET_PE
 965     tcc_define_symbol(s, "_WIN32", NULL);
 966 # ifdef TCC_TARGET_X86_64
 967     tcc_define_symbol(s, "_WIN64", NULL);
 968 # endif
 969 #else
 970     tcc_define_symbol(s, "__unix__", NULL);
 971     tcc_define_symbol(s, "__unix", NULL);
 972     tcc_define_symbol(s, "unix", NULL);
 973 # if defined(__linux)
 974     tcc_define_symbol(s, "__linux__", NULL);
 975     tcc_define_symbol(s, "__linux", NULL);
 976 # endif
 977 # if defined(__FreeBSD__)
 978 #  define str(s) #s
 979     tcc_define_symbol(s, "__FreeBSD__", str( __FreeBSD__));
 980 #  undef str
 981 # endif
 982 # if defined(__FreeBSD_kernel__)
 983     tcc_define_symbol(s, "__FreeBSD_kernel__", NULL);
 984 # endif
 985 #endif
 986
 987     /* TinyCC & gcc defines */
 988 #if defined TCC_TARGET_PE && defined TCC_TARGET_X86_64
 989     tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned long long");
 990     tcc_define_symbol(s, "__PTRDIFF_TYPE__", "long long");
 991 #else
 992     tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned long");
 993     tcc_define_symbol(s, "__PTRDIFF_TYPE__", "long");
 994 #endif
 995
 996 #ifdef TCC_TARGET_PE
 997     tcc_define_symbol(s, "__WCHAR_TYPE__", "unsigned short");
 998     tcc_define_symbol(s, "__WINT_TYPE__", "unsigned short");
 999 #else
1000     tcc_define_symbol(s, "__WCHAR_TYPE__", "int");
1001     /* wint_t is unsigned int by default, but (signed) int on BSDs
1002        and unsigned short on windows.  Other OSes might have still
1003        other conventions, sigh.  */
1004 #if defined(__FreeBSD__) || defined (__FreeBSD_kernel__)
1005     tcc_define_symbol(s, "__WINT_TYPE__", "int");
1006 #else
1007     tcc_define_symbol(s, "__WINT_TYPE__", "unsigned int");
1008 #endif
1009 #endif
1010
1011 #ifndef TCC_TARGET_PE
1012     /* glibc defines */
1013     tcc_define_symbol(s, "__REDIRECT(name, proto, alias)", "name proto __asm__ (#alias)");
1014     tcc_define_symbol(s, "__REDIRECT_NTH(name, proto, alias)", "name proto __asm__ (#alias) __THROW");
1015     /* paths for crt objects */
1016     tcc_split_path(s, (void ***)&s->crt_paths, &s->nb_crt_paths, CONFIG_TCC_CRTPREFIX);
1017 #endif
1018
1019     /* no section zero */
1020     dynarray_add((void ***)&s->sections, &s->nb_sections, NULL);
1021
1022     /* create standard sections */
1023     text_section = new_section(s, ".text", SHT_PROGBITS, SHF_ALLOC | SHF_EXECINSTR);
1024     data_section = new_section(s, ".data", SHT_PROGBITS, SHF_ALLOC | SHF_WRITE);
1025     bss_section = new_section(s, ".bss", SHT_NOBITS, SHF_ALLOC | SHF_WRITE);
1026
1027     /* symbols are always generated for linking stage */
1028     symtab_section = new_symtab(s, ".symtab", SHT_SYMTAB, 0,
1029                                 ".strtab",
1030                                 ".hashtab", SHF_PRIVATE);
1031     strtab_section = symtab_section->link;
1032     s->symtab = symtab_section;
1033
1034     /* private symbol table for dynamic symbols */
1035     s->dynsymtab_section = new_symtab(s, ".dynsymtab", SHT_SYMTAB, SHF_PRIVATE,
1036                                       ".dynstrtab",
1037                                       ".dynhashtab", SHF_PRIVATE);
1038     s->alacarte_link = 1;
1039     s->nocommon = 1;
1040
1041 #ifdef CHAR_IS_UNSIGNED
1042     s->char_is_unsigned = 1;
1043 #endif
1044     /* enable this if you want symbols with leading underscore on windows: */
1045 #if 0 /* def TCC_TARGET_PE */
1046     s->leading_underscore = 1;
1047 #endif
1048 #ifdef TCC_TARGET_I386
1049     s->seg_size = 32;
1050 #endif
1051 #ifdef TCC_IS_NATIVE
1052     s->runtime_main = "main";
1053 #endif
1054     return s;
1055 }
1056
1057 LIBTCCAPI void tcc_delete(TCCState *s1)
1058 {
1059     int i;
1060
1061     tcc_cleanup();
1062
1063     /* free all sections */
1064     for(i = 1; i < s1->nb_sections; i++)
1065         free_section(s1->sections[i]);
1066     dynarray_reset(&s1->sections, &s1->nb_sections);
1067
1068     for(i = 0; i < s1->nb_priv_sections; i++)
1069         free_section(s1->priv_sections[i]);
1070     dynarray_reset(&s1->priv_sections, &s1->nb_priv_sections);
1071
1072     /* free any loaded DLLs */
1073 #ifdef TCC_IS_NATIVE
1074     for ( i = 0; i < s1->nb_loaded_dlls; i++) {
1075         DLLReference *ref = s1->loaded_dlls[i];
1076         if ( ref->handle )
1077             dlclose(ref->handle);
1078     }
1079 #endif
1080
1081     /* free loaded dlls array */
1082     dynarray_reset(&s1->loaded_dlls, &s1->nb_loaded_dlls);
1083
1084     /* free library paths */
1085     dynarray_reset(&s1->library_paths, &s1->nb_library_paths);
1086     dynarray_reset(&s1->crt_paths, &s1->nb_crt_paths);
1087
1088     /* free include paths */
1089     dynarray_reset(&s1->cached_includes, &s1->nb_cached_includes);
1090     dynarray_reset(&s1->include_paths, &s1->nb_include_paths);
1091     dynarray_reset(&s1->sysinclude_paths, &s1->nb_sysinclude_paths);
1092
1093     tcc_free(s1->tcc_lib_path);
1094     tcc_free(s1->soname);
1095     tcc_free(s1->rpath);
1096     tcc_free(s1->init_symbol);
1097     tcc_free(s1->fini_symbol);
1098     tcc_free(s1->outfile);
1099     tcc_free(s1->deps_outfile);
1100     dynarray_reset(&s1->files, &s1->nb_files);
1101     dynarray_reset(&s1->target_deps, &s1->nb_target_deps);
1102
1103 #ifdef TCC_IS_NATIVE
1104 # ifdef HAVE_SELINUX
1105     munmap (s1->write_mem, s1->mem_size);
1106     munmap (s1->runtime_mem, s1->mem_size);
1107 # else
1108     tcc_free(s1->runtime_mem);
1109 # endif
1110 #endif
1111
1112     if(s1->sym_attrs) tcc_free(s1->sym_attrs);
1113
1114     tcc_free(s1);
1115 }
1116
1117 LIBTCCAPI int tcc_add_include_path(TCCState *s, const char *pathname)
1118 {
1119     tcc_split_path(s, (void ***)&s->include_paths, &s->nb_include_paths, pathname);
1120     return 0;
1121 }
1122
1123 LIBTCCAPI int tcc_add_sysinclude_path(TCCState *s, const char *pathname)
1124 {
1125     tcc_split_path(s, (void ***)&s->sysinclude_paths, &s->nb_sysinclude_paths, pathname);
1126     return 0;
1127 }
1128
1129 ST_FUNC int tcc_add_file_internal(TCCState *s1, const char *filename, int flags)
1130 {
1131     const char *ext;
1132     ElfW(Ehdr) ehdr;
1133     int fd, ret, size;
1134
1135     /* find source file type with extension */
1136     ext = tcc_fileextension(filename);
1137     if (ext[0])
1138         ext++;
1139
1140 #ifdef CONFIG_TCC_ASM
1141     /* if .S file, define __ASSEMBLER__ like gcc does */
1142     if (!strcmp(ext, "S"))
1143         tcc_define_symbol(s1, "__ASSEMBLER__", NULL);
1144 #endif
1145
1146     /* open the file */
1147     ret = tcc_open(s1, filename);
1148     if (ret < 0) {
1149         if (flags & AFF_PRINT_ERROR)
1150             tcc_error_noabort("file '%s' not found", filename);
1151         return ret;
1152     }
1153
1154     /* update target deps */
1155     dynarray_add((void ***)&s1->target_deps, &s1->nb_target_deps,
1156             tcc_strdup(filename));
1157
1158     if (flags & AFF_PREPROCESS) {
1159         ret = tcc_preprocess(s1);
1160         goto the_end;
1161     }
1162
1163     if (!ext[0] || !PATHCMP(ext, "c")) {
1164         /* C file assumed */
1165         ret = tcc_compile(s1);
1166         goto the_end;
1167     }
1168
1169 #ifdef CONFIG_TCC_ASM
1170     if (!strcmp(ext, "S")) {
1171         /* preprocessed assembler */
1172         ret = tcc_assemble(s1, 1);
1173         goto the_end;
1174     }
1175
1176     if (!strcmp(ext, "s")) {
1177         /* non preprocessed assembler */
1178         ret = tcc_assemble(s1, 0);
1179         goto the_end;
1180     }
1181 #endif
1182
1183     fd = file->fd;
1184     /* assume executable format: auto guess file type */
1185     size = read(fd, &ehdr, sizeof(ehdr));
1186     lseek(fd, 0, SEEK_SET);
1187     if (size <= 0) {
1188         tcc_error_noabort("could not read header");
1189         goto the_end;
1190     }
1191
1192     if (size == sizeof(ehdr) &&
1193         ehdr.e_ident[0] == ELFMAG0 &&
1194         ehdr.e_ident[1] == ELFMAG1 &&
1195         ehdr.e_ident[2] == ELFMAG2 &&
1196         ehdr.e_ident[3] == ELFMAG3) {
1197
1198         /* do not display line number if error */
1199         file->line_num = 0;
1200         if (ehdr.e_type == ET_REL) {
1201             ret = tcc_load_object_file(s1, fd, 0);
1202             goto the_end;
1203
1204         }
1205 #ifndef TCC_TARGET_PE
1206         if (ehdr.e_type == ET_DYN) {
1207             if (s1->output_type == TCC_OUTPUT_MEMORY) {
1208 #ifdef TCC_IS_NATIVE
1209                 void *h;
1210                 h = dlopen(filename, RTLD_GLOBAL | RTLD_LAZY);
1211                 if (h)
1212 #endif
1213                     ret = 0;
1214             } else {
1215                 ret = tcc_load_dll(s1, fd, filename,
1216                                    (flags & AFF_REFERENCED_DLL) != 0);
1217             }
1218             goto the_end;
1219         }
1220 #endif
1221         tcc_error_noabort("unrecognized ELF file");
1222         goto the_end;
1223     }
1224
1225     if (memcmp((char *)&ehdr, ARMAG, 8) == 0) {
1226         file->line_num = 0; /* do not display line number if error */
1227         ret = tcc_load_archive(s1, fd);
1228         goto the_end;
1229     }
1230
1231 #ifdef TCC_TARGET_COFF
1232     if (*(uint16_t *)(&ehdr) == COFF_C67_MAGIC) {
1233         ret = tcc_load_coff(s1, fd);
1234         goto the_end;
1235     }
1236 #endif
1237
1238 #ifdef TCC_TARGET_PE
1239     ret = pe_load_file(s1, filename, fd);
1240 #else
1241     /* as GNU ld, consider it is an ld script if not recognized */
1242     ret = tcc_load_ldscript(s1);
1243 #endif
1244     if (ret < 0)
1245         tcc_error_noabort("unrecognized file type");
1246
1247 the_end:
1248     tcc_close();
1249     return ret;
1250 }
1251
1252 LIBTCCAPI int tcc_add_file(TCCState *s, const char *filename)
1253 {
1254     if (s->output_type == TCC_OUTPUT_PREPROCESS)
1255         return tcc_add_file_internal(s, filename, AFF_PRINT_ERROR | AFF_PREPROCESS);
1256     else
1257         return tcc_add_file_internal(s, filename, AFF_PRINT_ERROR);
1258 }
1259
1260 LIBTCCAPI int tcc_add_library_path(TCCState *s, const char *pathname)
1261 {
1262     tcc_split_path(s, (void ***)&s->library_paths, &s->nb_library_paths, pathname);
1263     return 0;
1264 }
1265
1266 static int tcc_add_library_internal(TCCState *s, const char *fmt,
1267     const char *filename, int flags, char **paths, int nb_paths)
1268 {
1269     char buf[1024];
1270     int i;
1271
1272     for(i = 0; i < nb_paths; i++) {
1273         snprintf(buf, sizeof(buf), fmt, paths[i], filename);
1274         if (tcc_add_file_internal(s, buf, flags) == 0)
1275             return 0;
1276     }
1277     return -1;
1278 }
1279
1280 /* find and load a dll. Return non zero if not found */
1281 /* XXX: add '-rpath' option support ? */
1282 ST_FUNC int tcc_add_dll(TCCState *s, const char *filename, int flags)
1283 {
1284     return tcc_add_library_internal(s, "%s/%s", filename, flags,
1285         s->library_paths, s->nb_library_paths);
1286 }
1287
1288 ST_FUNC int tcc_add_crt(TCCState *s, const char *filename)
1289 {
1290     if (-1 == tcc_add_library_internal(s, "%s/%s",
1291         filename, 0, s->crt_paths, s->nb_crt_paths))
1292         tcc_error_noabort("file '%s' not found", filename);
1293     return 0;
1294 }
1295
1296 /* the library name is the same as the argument of the '-l' option */
1297 LIBTCCAPI int tcc_add_library(TCCState *s, const char *libraryname)
1298 {
1299 #ifdef TCC_TARGET_PE
1300     const char *libs[] = { "%s/%s.def", "%s/lib%s.def", "%s/%s.dll", "%s/lib%s.dll", "%s/lib%s.a", NULL };
1301     const char **pp = s->static_link ? libs + 4 : libs;
1302 #else
1303     const char *libs[] = { "%s/lib%s.so", "%s/lib%s.a", NULL };
1304     const char **pp = s->static_link ? libs + 1 : libs;
1305 #endif
1306     while (*pp) {
1307         if (0 == tcc_add_library_internal(s, *pp,
1308             libraryname, 0, s->library_paths, s->nb_library_paths))
1309             return 0;
1310         ++pp;
1311     }
1312     return -1;
1313 }
1314
1315 LIBTCCAPI int tcc_add_symbol(TCCState *s, const char *name, const void *val)
1316 {
1317 #ifdef TCC_TARGET_PE
1318     /* On x86_64 'val' might not be reachable with a 32bit offset.
1319        So it is handled here as if it were in a DLL. */
1320     pe_putimport(s, 0, name, (uintptr_t)val);
1321 #else
1322     add_elf_sym(symtab_section, (uintptr_t)val, 0,
1323         ELFW(ST_INFO)(STB_GLOBAL, STT_NOTYPE), 0,
1324         SHN_ABS, name);
1325 #endif
1326     return 0;
1327 }
1328
1329 LIBTCCAPI int tcc_set_output_type(TCCState *s, int output_type)
1330 {
1331     s->output_type = output_type;
1332
1333     if (!s->nostdinc) {
1334         /* default include paths */
1335         /* -isystem paths have already been handled */
1336         tcc_add_sysinclude_path(s, CONFIG_TCC_SYSINCLUDEPATHS);
1337     }
1338
1339     /* if bound checking, then add corresponding sections */
1340 #ifdef CONFIG_TCC_BCHECK
1341     if (s->do_bounds_check) {
1342         /* define symbol */
1343         tcc_define_symbol(s, "__BOUNDS_CHECKING_ON", NULL);
1344         /* create bounds sections */
1345         bounds_section = new_section(s, ".bounds",
1346                                      SHT_PROGBITS, SHF_ALLOC);
1347         lbounds_section = new_section(s, ".lbounds",
1348                                       SHT_PROGBITS, SHF_ALLOC);
1349     }
1350 #endif
1351
1352     if (s->char_is_unsigned) {
1353         tcc_define_symbol(s, "__CHAR_UNSIGNED__", NULL);
1354     }
1355
1356     /* add debug sections */
1357     if (s->do_debug) {
1358         /* stab symbols */
1359         stab_section = new_section(s, ".stab", SHT_PROGBITS, 0);
1360         stab_section->sh_entsize = sizeof(Stab_Sym);
1361         stabstr_section = new_section(s, ".stabstr", SHT_STRTAB, 0);
1362         put_elf_str(stabstr_section, "");
1363         stab_section->link = stabstr_section;
1364         /* put first entry */
1365         put_stabs("", 0, 0, 0, 0);
1366     }
1367
1368     tcc_add_library_path(s, CONFIG_TCC_LIBPATHS);
1369 #ifdef TCC_TARGET_PE
1370 # ifdef _WIN32
1371     tcc_add_systemdir(s);
1372 # endif
1373 #else
1374     /* add libc crt1/crti objects */
1375     if ((output_type == TCC_OUTPUT_EXE || output_type == TCC_OUTPUT_DLL) &&
1376         !s->nostdlib) {
1377         if (output_type != TCC_OUTPUT_DLL)
1378             tcc_add_crt(s, "crt1.o");
1379         tcc_add_crt(s, "crti.o");
1380     }
1381 #endif
1382     return 0;
1383 }
1384
1385 LIBTCCAPI void tcc_set_lib_path(TCCState *s, const char *path)
1386 {
1387     tcc_free(s->tcc_lib_path);
1388     s->tcc_lib_path = tcc_strdup(path);
1389 }
1390
1391 #define WD_ALL    0x0001 /* warning is activated when using -Wall */
1392 #define FD_INVERT 0x0002 /* invert value before storing */
1393
1394 typedef struct FlagDef {
1395     uint16_t offset;
1396     uint16_t flags;
1397     const char *name;
1398 } FlagDef;
1399
1400 static const FlagDef warning_defs[] = {
1401     { offsetof(TCCState, warn_unsupported), 0, "unsupported" },
1402     { offsetof(TCCState, warn_write_strings), 0, "write-strings" },
1403     { offsetof(TCCState, warn_error), 0, "error" },
1404     { offsetof(TCCState, warn_implicit_function_declaration), WD_ALL,
1405       "implicit-function-declaration" },
1406 };
1407
1408 ST_FUNC int set_flag(TCCState *s, const FlagDef *flags, int nb_flags,
1409                     const char *name, int value)
1410 {
1411     int i;
1412     const FlagDef *p;
1413     const char *r;
1414
1415     r = name;
1416     if (r[0] == 'n' && r[1] == 'o' && r[2] == '-') {
1417         r += 3;
1418         value = !value;
1419     }
1420     for(i = 0, p = flags; i < nb_flags; i++, p++) {
1421         if (!strcmp(r, p->name))
1422             goto found;
1423     }
1424     return -1;
1425  found:
1426     if (p->flags & FD_INVERT)
1427         value = !value;
1428     *(int *)((uint8_t *)s + p->offset) = value;
1429     return 0;
1430 }
1431
1432 /* set/reset a warning */
1433 static int tcc_set_warning(TCCState *s, const char *warning_name, int value)
1434 {
1435     int i;
1436     const FlagDef *p;
1437
1438     if (!strcmp(warning_name, "all")) {
1439         for(i = 0, p = warning_defs; i < countof(warning_defs); i++, p++) {
1440             if (p->flags & WD_ALL)
1441                 *(int *)((uint8_t *)s + p->offset) = 1;
1442         }
1443         return 0;
1444     } else {
1445         return set_flag(s, warning_defs, countof(warning_defs),
1446                         warning_name, value);
1447     }
1448 }
1449
1450 static const FlagDef flag_defs[] = {
1451     { offsetof(TCCState, char_is_unsigned), 0, "unsigned-char" },
1452     { offsetof(TCCState, char_is_unsigned), FD_INVERT, "signed-char" },
1453     { offsetof(TCCState, nocommon), FD_INVERT, "common" },
1454     { offsetof(TCCState, leading_underscore), 0, "leading-underscore" },
1455 };
1456
1457 /* set/reset a flag */
1458 static int tcc_set_flag(TCCState *s, const char *flag_name, int value)
1459 {
1460     return set_flag(s, flag_defs, countof(flag_defs),
1461                     flag_name, value);
1462 }
1463
1464
1465 static int strstart(const char *val, const char **str)
1466 {
1467     const char *p, *q;
1468     p = *str;
1469     q = val;
1470     while (*q) {
1471         if (*p != *q)
1472             return 0;
1473         p++;
1474         q++;
1475     }
1476     *str = p;
1477     return 1;
1478 }
1479
1480 /* Like strstart, but automatically takes into account that ld options can
1481  *
1482  * - start with double or single dash (e.g. '--soname' or '-soname')
1483  * - arguments can be given as separate or after '=' (e.g. '-Wl,-soname,x.so'
1484  *   or '-Wl,-soname=x.so')
1485  *
1486  * you provide `val` always in 'option[=]' form (no leading -)
1487  */
1488 static int link_option(const char *str, const char *val, const char **ptr)
1489 {
1490     const char *p, *q;
1491
1492     /* there should be 1 or 2 dashes */
1493     if (*str++ != '-')
1494         return 0;
1495     if (*str == '-')
1496         str++;
1497
1498     /* then str & val should match (potentialy up to '=') */
1499     p = str;
1500     q = val;
1501
1502     while (*q != '\0' && *q != '=') {
1503         if (*p != *q)
1504             return 0;
1505         p++;
1506         q++;
1507     }
1508
1509     /* '=' near eos means ',' or '=' is ok */
1510     if (*q == '=') {
1511         if (*p != ',' && *p != '=')
1512             return 0;
1513         p++;
1514         q++;
1515     }
1516
1517     if (ptr)
1518         *ptr = p;
1519     return 1;
1520 }
1521
1522 static const char *skip_linker_arg(const char **str)
1523 {
1524     const char *s1 = *str;
1525     const char *s2 = strchr(s1, ',');
1526     *str = s2 ? s2++ : (s2 = s1 + strlen(s1));
1527     return s2;
1528 }
1529
1530 static char *copy_linker_arg(const char *p)
1531 {
1532     const char *q = p;
1533     skip_linker_arg(&q);
1534     return pstrncpy(tcc_malloc(q - p + 1), p, q - p);
1535 }
1536
1537 /* set linker options */
1538 static int tcc_set_linker(TCCState *s, const char *option)
1539 {
1540     while (option && *option) {
1541
1542         const char *p = option;
1543         char *end = NULL;
1544         int ignoring = 0;
1545
1546         if (link_option(option, "Bsymbolic", &p)) {
1547             s->symbolic = 1;
1548         } else if (link_option(option, "nostdlib", &p)) {
1549             s->nostdlib = 1;
1550         } else if (link_option(option, "fini=", &p)) {
1551             s->fini_symbol = copy_linker_arg(p);
1552             ignoring = 1;
1553         } else if (link_option(option, "image-base=", &p)
1554                 || link_option(option, "Ttext=", &p)) {
1555             s->text_addr = strtoull(p, &end, 16);
1556             s->has_text_addr = 1;
1557         } else if (link_option(option, "init=", &p)) {
1558             s->init_symbol = copy_linker_arg(p);
1559             ignoring = 1;
1560         } else if (link_option(option, "oformat=", &p)) {
1561 #if defined(TCC_TARGET_PE)
1562             if (strstart("pe-", &p)) {
1563 #elif defined(TCC_TARGET_X86_64)
1564             if (strstart("elf64-", &p)) {
1565 #else
1566             if (strstart("elf32-", &p)) {
1567 #endif
1568                 s->output_format = TCC_OUTPUT_FORMAT_ELF;
1569             } else if (!strcmp(p, "binary")) {
1570                 s->output_format = TCC_OUTPUT_FORMAT_BINARY;
1571 #ifdef TCC_TARGET_COFF
1572             } else if (!strcmp(p, "coff")) {
1573                 s->output_format = TCC_OUTPUT_FORMAT_COFF;
1574 #endif
1575             } else
1576                 goto err;
1577
1578         } else if (link_option(option, "as-needed", &p)) {
1579             ignoring = 1;
1580         } else if (link_option(option, "O", &p)) {
1581             ignoring = 1;
1582         } else if (link_option(option, "rpath=", &p)) {
1583             s->rpath = copy_linker_arg(p);
1584         } else if (link_option(option, "section-alignment=", &p)) {
1585             s->section_align = strtoul(p, &end, 16);
1586         } else if (link_option(option, "soname=", &p)) {
1587             s->soname = copy_linker_arg(p);
1588 #ifdef TCC_TARGET_PE
1589         } else if (link_option(option, "file-alignment=", &p)) {
1590             s->pe_file_align = strtoul(p, &end, 16);
1591         } else if (link_option(option, "stack=", &p)) {
1592             s->pe_stack_size = strtoul(p, &end, 10);
1593         } else if (link_option(option, "subsystem=", &p)) {
1594 #if defined(TCC_TARGET_I386) || defined(TCC_TARGET_X86_64)
1595             if (!strcmp(p, "native")) {
1596                 s->pe_subsystem = 1;
1597             } else if (!strcmp(p, "console")) {
1598                 s->pe_subsystem = 3;
1599             } else if (!strcmp(p, "gui")) {
1600                 s->pe_subsystem = 2;
1601             } else if (!strcmp(p, "posix")) {
1602                 s->pe_subsystem = 7;
1603             } else if (!strcmp(p, "efiapp")) {
1604                 s->pe_subsystem = 10;
1605             } else if (!strcmp(p, "efiboot")) {
1606                 s->pe_subsystem = 11;
1607             } else if (!strcmp(p, "efiruntime")) {
1608                 s->pe_subsystem = 12;
1609             } else if (!strcmp(p, "efirom")) {
1610                 s->pe_subsystem = 13;
1611 #elif defined(TCC_TARGET_ARM)
1612             if (!strcmp(p, "wince")) {
1613                 s->pe_subsystem = 9;
1614 #endif
1615             } else
1616                 goto err;
1617 #endif
1618         } else
1619             goto err;
1620
1621         if (ignoring && s->warn_unsupported) err: {
1622             char buf[100], *e;
1623             pstrcpy(buf, sizeof buf, e = copy_linker_arg(option)), tcc_free(e);
1624             if (ignoring)
1625                 tcc_warning("unsupported linker option '%s'", buf);
1626             else
1627                 tcc_error("unsupported linker option '%s'", buf);
1628         }
1629         option = skip_linker_arg(&p);
1630     }
1631     return 0;
1632 }
1633
1634 typedef struct TCCOption {
1635     const char *name;
1636     uint16_t index;
1637     uint16_t flags;
1638 } TCCOption;
1639
1640 enum {
1641     TCC_OPTION_HELP,
1642     TCC_OPTION_I,
1643     TCC_OPTION_D,
1644     TCC_OPTION_U,
1645     TCC_OPTION_L,
1646     TCC_OPTION_B,
1647     TCC_OPTION_l,
1648     TCC_OPTION_bench,
1649     TCC_OPTION_bt,
1650     TCC_OPTION_b,
1651     TCC_OPTION_g,
1652     TCC_OPTION_c,
1653     TCC_OPTION_float_abi,
1654     TCC_OPTION_static,
1655     TCC_OPTION_shared,
1656     TCC_OPTION_soname,
1657     TCC_OPTION_o,
1658     TCC_OPTION_r,
1659     TCC_OPTION_s,
1660     TCC_OPTION_Wl,
1661     TCC_OPTION_W,
1662     TCC_OPTION_O,
1663     TCC_OPTION_m,
1664     TCC_OPTION_f,
1665     TCC_OPTION_isystem,
1666     TCC_OPTION_nostdinc,
1667     TCC_OPTION_nostdlib,
1668     TCC_OPTION_print_search_dirs,
1669     TCC_OPTION_rdynamic,
1670     TCC_OPTION_pedantic,
1671     TCC_OPTION_pthread,
1672     TCC_OPTION_run,
1673     TCC_OPTION_v,
1674     TCC_OPTION_w,
1675     TCC_OPTION_pipe,
1676     TCC_OPTION_E,
1677     TCC_OPTION_MD,
1678     TCC_OPTION_MF,
1679     TCC_OPTION_x,
1680     TCC_OPTION_dumpversion,
1681 };
1682
1683 #define TCC_OPTION_HAS_ARG 0x0001
1684 #define TCC_OPTION_NOSEP   0x0002 /* cannot have space before option and arg */
1685
1686 static const TCCOption tcc_options[] = {
1687     { "h", TCC_OPTION_HELP, 0 },
1688     { "-help", TCC_OPTION_HELP, 0 },
1689     { "?", TCC_OPTION_HELP, 0 },
1690     { "I", TCC_OPTION_I, TCC_OPTION_HAS_ARG },
1691     { "D", TCC_OPTION_D, TCC_OPTION_HAS_ARG },
1692     { "U", TCC_OPTION_U, TCC_OPTION_HAS_ARG },
1693     { "L", TCC_OPTION_L, TCC_OPTION_HAS_ARG },
1694     { "B", TCC_OPTION_B, TCC_OPTION_HAS_ARG },
1695     { "l", TCC_OPTION_l, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1696     { "bench", TCC_OPTION_bench, 0 },
1697 #ifdef CONFIG_TCC_BACKTRACE
1698     { "bt", TCC_OPTION_bt, TCC_OPTION_HAS_ARG },
1699 #endif
1700 #ifdef CONFIG_TCC_BCHECK
1701     { "b", TCC_OPTION_b, 0 },
1702 #endif
1703     { "g", TCC_OPTION_g, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1704     { "c", TCC_OPTION_c, 0 },
1705 #ifdef TCC_TARGET_ARM
1706     { "mfloat-abi", TCC_OPTION_float_abi, TCC_OPTION_HAS_ARG },
1707 #endif
1708     { "static", TCC_OPTION_static, 0 },
1709     { "shared", TCC_OPTION_shared, 0 },
1710     { "soname", TCC_OPTION_soname, TCC_OPTION_HAS_ARG },
1711     { "o", TCC_OPTION_o, TCC_OPTION_HAS_ARG },
1712     { "pedantic", TCC_OPTION_pedantic, 0},
1713     { "pthread", TCC_OPTION_pthread, 0},
1714     { "run", TCC_OPTION_run, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1715     { "rdynamic", TCC_OPTION_rdynamic, 0 },
1716     { "r", TCC_OPTION_r, 0 },
1717     { "s", TCC_OPTION_s, 0 },
1718     { "Wl,", TCC_OPTION_Wl, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1719     { "W", TCC_OPTION_W, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1720     { "O", TCC_OPTION_O, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1721     { "m", TCC_OPTION_m, TCC_OPTION_HAS_ARG },
1722     { "f", TCC_OPTION_f, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1723     { "isystem", TCC_OPTION_isystem, TCC_OPTION_HAS_ARG },
1724     { "nostdinc", TCC_OPTION_nostdinc, 0 },
1725     { "nostdlib", TCC_OPTION_nostdlib, 0 },
1726     { "print-search-dirs", TCC_OPTION_print_search_dirs, 0 },
1727     { "v", TCC_OPTION_v, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1728     { "w", TCC_OPTION_w, 0 },
1729     { "pipe", TCC_OPTION_pipe, 0},
1730     { "E", TCC_OPTION_E, 0},
1731     { "MD", TCC_OPTION_MD, 0},
1732     { "MF", TCC_OPTION_MF, TCC_OPTION_HAS_ARG },
1733     { "x", TCC_OPTION_x, TCC_OPTION_HAS_ARG },
1734     { "dumpversion", TCC_OPTION_dumpversion, 0},
1735     { NULL, 0, 0 },
1736 };
1737
1738 static void parse_option_D(TCCState *s1, const char *optarg)
1739 {
1740     char *sym = tcc_strdup(optarg);
1741     char *value = strchr(sym, '=');
1742     if (value)
1743         *value++ = '\0';
1744     tcc_define_symbol(s1, sym, value);
1745     tcc_free(sym);
1746 }
1747
1748 PUB_FUNC int tcc_parse_args(TCCState *s, int argc, char **argv)
1749 {
1750     const TCCOption *popt;
1751     const char *optarg, *r;
1752     int run = 0;
1753     int pthread = 0;
1754     int optind = 0;
1755
1756     /* collect -Wl options for input such as "-Wl,-rpath -Wl,<path>" */
1757     CString linker_arg;
1758     cstr_new(&linker_arg);
1759
1760     while (optind < argc) {
1761
1762         r = argv[optind++];
1763         if (r[0] != '-' || r[1] == '\0') {
1764             /* add a new file */
1765             dynarray_add((void ***)&s->files, &s->nb_files, tcc_strdup(r));
1766             if (run) {
1767                 optind--;
1768                 /* argv[0] will be this file */
1769                 break;
1770             }
1771             continue;
1772         }
1773
1774         /* find option in table */
1775         for(popt = tcc_options; ; ++popt) {
1776             const char *p1 = popt->name;
1777             const char *r1 = r + 1;
1778             if (p1 == NULL)
1779                 tcc_error("invalid option -- '%s'", r);
1780             if (!strstart(p1, &r1))
1781                 continue;
1782             optarg = r1;
1783             if (popt->flags & TCC_OPTION_HAS_ARG) {
1784                 if (*r1 == '\0' && !(popt->flags & TCC_OPTION_NOSEP)) {
1785                     if (optind >= argc)
1786                         tcc_error("argument to '%s' is missing", r);
1787                     optarg = argv[optind++];
1788                 }
1789             } else if (*r1 != '\0')
1790                 continue;
1791             break;
1792         }
1793
1794         switch(popt->index) {
1795         case TCC_OPTION_HELP:
1796             return 0;
1797         case TCC_OPTION_I:
1798             if (tcc_add_include_path(s, optarg) < 0)
1799                 tcc_error("too many include paths");
1800             break;
1801         case TCC_OPTION_D:
1802             parse_option_D(s, optarg);
1803             break;
1804         case TCC_OPTION_U:
1805             tcc_undefine_symbol(s, optarg);
1806             break;
1807         case TCC_OPTION_L:
1808             tcc_add_library_path(s, optarg);
1809             break;
1810         case TCC_OPTION_B:
1811             /* set tcc utilities path (mainly for tcc development) */
1812             tcc_set_lib_path(s, optarg);
1813             break;
1814         case TCC_OPTION_l:
1815             dynarray_add((void ***)&s->files, &s->nb_files, tcc_strdup(r));
1816             s->nb_libraries++;
1817             break;
1818         case TCC_OPTION_pthread:
1819             parse_option_D(s, "_REENTRANT");
1820             pthread = 1;
1821             break;
1822         case TCC_OPTION_bench:
1823             s->do_bench = 1;
1824             break;
1825 #ifdef CONFIG_TCC_BACKTRACE
1826         case TCC_OPTION_bt:
1827             tcc_set_num_callers(atoi(optarg));
1828             break;
1829 #endif
1830 #ifdef CONFIG_TCC_BCHECK
1831         case TCC_OPTION_b:
1832             s->do_bounds_check = 1;
1833             s->do_debug = 1;
1834             break;
1835 #endif
1836         case TCC_OPTION_g:
1837             s->do_debug = 1;
1838             break;
1839         case TCC_OPTION_c:
1840             s->output_type = TCC_OUTPUT_OBJ;
1841             break;
1842 #ifdef TCC_TARGET_ARM
1843         case TCC_OPTION_float_abi:
1844             /* tcc doesn't support soft float yet */
1845             if (!strcmp(optarg, "softfp")) {
1846                 s->float_abi = ARM_SOFTFP_FLOAT;
1847                 tcc_undefine_symbol(s, "__ARM_PCS_VFP");
1848             } else if (!strcmp(optarg, "hard"))
1849                 s->float_abi = ARM_HARD_FLOAT;
1850             else
1851                 tcc_error("unsupported float abi '%s'", optarg);
1852             break;
1853 #endif
1854         case TCC_OPTION_static:
1855             s->static_link = 1;
1856             break;
1857         case TCC_OPTION_shared:
1858             s->output_type = TCC_OUTPUT_DLL;
1859             break;
1860         case TCC_OPTION_soname:
1861             s->soname = tcc_strdup(optarg);
1862             break;
1863         case TCC_OPTION_m:
1864             s->option_m = tcc_strdup(optarg);
1865             break;
1866         case TCC_OPTION_o:
1867             s->outfile = tcc_strdup(optarg);
1868             break;
1869         case TCC_OPTION_r:
1870             /* generate a .o merging several output files */
1871             s->option_r = 1;
1872             s->output_type = TCC_OUTPUT_OBJ;
1873             break;
1874         case TCC_OPTION_isystem:
1875             tcc_add_sysinclude_path(s, optarg);
1876             break;
1877         case TCC_OPTION_nostdinc:
1878             s->nostdinc = 1;
1879             break;
1880         case TCC_OPTION_nostdlib:
1881             s->nostdlib = 1;
1882             break;
1883         case TCC_OPTION_print_search_dirs:
1884             s->print_search_dirs = 1;
1885             break;
1886         case TCC_OPTION_run:
1887             s->output_type = TCC_OUTPUT_MEMORY;
1888             tcc_set_options(s, optarg);
1889             run = 1;
1890             break;
1891         case TCC_OPTION_v:
1892             do ++s->verbose; while (*optarg++ == 'v');
1893             break;
1894         case TCC_OPTION_f:
1895             if (tcc_set_flag(s, optarg, 1) < 0 && s->warn_unsupported)
1896                 goto unsupported_option;
1897             break;
1898         case TCC_OPTION_W:
1899             if (tcc_set_warning(s, optarg, 1) < 0 &&
1900                 s->warn_unsupported)
1901                 goto unsupported_option;
1902             break;
1903         case TCC_OPTION_w:
1904             s->warn_none = 1;
1905             break;
1906         case TCC_OPTION_rdynamic:
1907             s->rdynamic = 1;
1908             break;
1909         case TCC_OPTION_Wl:
1910             if (linker_arg.size)
1911                 --linker_arg.size, cstr_ccat(&linker_arg, ',');
1912             cstr_cat(&linker_arg, optarg);
1913             cstr_ccat(&linker_arg, '\0');
1914             break;
1915         case TCC_OPTION_E:
1916             s->output_type = TCC_OUTPUT_PREPROCESS;
1917             break;
1918         case TCC_OPTION_MD:
1919             s->gen_deps = 1;
1920             break;
1921         case TCC_OPTION_MF:
1922             s->deps_outfile = tcc_strdup(optarg);
1923             break;
1924         case TCC_OPTION_dumpversion:
1925             printf ("%s\n", TCC_VERSION);
1926             exit(0);
1927         case TCC_OPTION_O:
1928         case TCC_OPTION_pedantic:
1929         case TCC_OPTION_pipe:
1930         case TCC_OPTION_s:
1931         case TCC_OPTION_x:
1932             /* ignored */
1933             break;
1934         default:
1935             if (s->warn_unsupported) {
1936             unsupported_option:
1937                 tcc_warning("unsupported option '%s'", r);
1938             }
1939             break;
1940         }
1941     }
1942
1943     if (pthread && s->output_type != TCC_OUTPUT_OBJ)
1944         tcc_set_options(s, "-lpthread");
1945
1946     tcc_set_linker(s, (const char *)linker_arg.data);
1947     cstr_free(&linker_arg);
1948
1949     return optind;
1950 }
1951
1952 LIBTCCAPI int tcc_set_options(TCCState *s, const char *str)
1953 {
1954     const char *s1;
1955     char **argv, *arg;
1956     int argc, len;
1957     int ret;
1958
1959     argc = 0, argv = NULL;
1960     for(;;) {
1961         while (is_space(*str))
1962             str++;
1963         if (*str == '\0')
1964             break;
1965         s1 = str;
1966         while (*str != '\0' && !is_space(*str))
1967             str++;
1968         len = str - s1;
1969         arg = tcc_malloc(len + 1);
1970         pstrncpy(arg, s1, len);
1971         dynarray_add((void ***)&argv, &argc, arg);
1972     }
1973     ret = tcc_parse_args(s, argc, argv);
1974     dynarray_reset(&argv, &argc);
1975     return ret;
1976 }
1977
1978 PUB_FUNC void tcc_print_stats(TCCState *s, int64_t total_time)
1979 {
1980     double tt;
1981     tt = (double)total_time / 1000000.0;
1982     if (tt < 0.001)
1983         tt = 0.001;
1984     if (total_bytes < 1)
1985         total_bytes = 1;
1986     printf("%d idents, %d lines, %d bytes, %0.3f s, %d lines/s, %0.1f MB/s\n",
1987            tok_ident - TOK_IDENT, total_lines, total_bytes,
1988            tt, (int)(total_lines / tt),
1989            total_bytes / tt / 1000000.0);
1990 }
1991
1992 PUB_FUNC void tcc_set_environment(TCCState *s)
1993 {
1994     char * path;
1995
1996     path = getenv("C_INCLUDE_PATH");
1997     if(path != NULL) {
1998         tcc_add_include_path(s, path);
1999     }
2000     path = getenv("CPATH");
2001     if(path != NULL) {
2002         tcc_add_include_path(s, path);
2003     }
2004     path = getenv("LIBRARY_PATH");
2005     if(path != NULL) {
2006         tcc_add_library_path(s, path);
2007     }
2008 }