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 static int nb_states;
  36
  37 /********************************************************/
  38
  39 #ifdef ONE_SOURCE
  40 #include "tccpp.c"
  41 #include "tccgen.c"
  42 #include "tccelf.c"
  43 #include "tccrun.c"
  44 #ifdef TCC_TARGET_I386
  45 #include "i386-gen.c"
  46 #include "i386-link.c"
  47 #endif
  48 #ifdef TCC_TARGET_ARM
  49 #include "arm-gen.c"
  50 #include "arm-link.c"
  51 #endif
  52 #ifdef TCC_TARGET_ARM64
  53 #include "arm64-gen.c"
  54 #include "arm64-link.c"
  55 #endif
  56 #ifdef TCC_TARGET_C67
  57 #include "c67-gen.c"
  58 #include "c67-link.c"
  59 #endif
  60 #ifdef TCC_TARGET_X86_64
  61 #include "x86_64-gen.c"
  62 #include "x86_64-link.c"
  63 #endif
  64 #ifdef CONFIG_TCC_ASM
  65 #include "tccasm.c"
  66 #if defined TCC_TARGET_I386 || defined TCC_TARGET_X86_64
  67 #include "i386-asm.c"
  68 #endif
  69 #endif
  70 #ifdef TCC_TARGET_COFF
  71 #include "tcccoff.c"
  72 #endif
  73 #ifdef TCC_TARGET_PE
  74 #include "tccpe.c"
  75 #endif
  76 #endif /* ONE_SOURCE */
  77
  78 /********************************************************/
  79 #ifndef CONFIG_TCC_ASM
  80 ST_FUNC void asm_instr(void)
  81 {
  82     tcc_error("inline asm() not supported");
  83 }
  84 ST_FUNC void asm_global_instr(void)
  85 {
  86     tcc_error("inline asm() not supported");
  87 }
  88 #endif
  89
  90 /********************************************************/
  91 #ifdef _WIN32
  92 ST_FUNC char *normalize_slashes(char *path)
  93 {
  94     char *p;
  95     for (p = path; *p; ++p)
  96         if (*p == '\\')
  97             *p = '/';
  98     return path;
  99 }
 100
 101 static HMODULE tcc_module;
 102
 103 /* on win32, we suppose the lib and includes are at the location of 'tcc.exe' */
 104 static void tcc_set_lib_path_w32(TCCState *s)
 105 {
 106     char path[1024], *p;
 107     GetModuleFileNameA(tcc_module, path, sizeof path);
 108     p = tcc_basename(normalize_slashes(strlwr(path)));
 109     if (p - 5 > path && 0 == strncmp(p - 5, "/bin/", 5))
 110         p -= 5;
 111     else if (p > path)
 112         p--;
 113     *p = 0;
 114     tcc_set_lib_path(s, path);
 115 }
 116
 117 #ifdef TCC_TARGET_PE
 118 static void tcc_add_systemdir(TCCState *s)
 119 {
 120     char buf[1000];
 121     GetSystemDirectory(buf, sizeof buf);
 122     tcc_add_library_path(s, normalize_slashes(buf));
 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 ST_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 ST_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 ST_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 #ifndef MEM_DEBUG
 202
 203 PUB_FUNC void tcc_free(void *ptr)
 204 {
 205     free(ptr);
 206 }
 207
 208 PUB_FUNC void *tcc_malloc(unsigned long size)
 209 {
 210     void *ptr;
 211     ptr = malloc(size);
 212     if (!ptr && size)
 213         tcc_error("memory full (malloc)");
 214     return ptr;
 215 }
 216
 217 PUB_FUNC void *tcc_mallocz(unsigned long size)
 218 {
 219     void *ptr;
 220     ptr = tcc_malloc(size);
 221     memset(ptr, 0, size);
 222     return ptr;
 223 }
 224
 225 PUB_FUNC void *tcc_realloc(void *ptr, unsigned long size)
 226 {
 227     void *ptr1;
 228     ptr1 = realloc(ptr, size);
 229     if (!ptr1 && size)
 230         tcc_error("memory full (realloc)");
 231     return ptr1;
 232 }
 233
 234 PUB_FUNC char *tcc_strdup(const char *str)
 235 {
 236     char *ptr;
 237     ptr = tcc_malloc(strlen(str) + 1);
 238     strcpy(ptr, str);
 239     return ptr;
 240 }
 241
 242 PUB_FUNC void tcc_memstats(int bench)
 243 {
 244 }
 245
 246 #else
 247
 248 #define MEM_DEBUG_MAGIC1 0xFEEDDEB1
 249 #define MEM_DEBUG_MAGIC2 0xFEEDDEB2
 250 #define MEM_DEBUG_MAGIC3 0xFEEDDEB3
 251 #define MEM_DEBUG_FILE_LEN 40
 252 #define MEM_DEBUG_CHECK3(header) \
 253     ((mem_debug_header_t*)((char*)header + header->size))->magic3
 254 #define MEM_USER_PTR(header) \
 255     ((char *)header + offsetof(mem_debug_header_t, magic3))
 256 #define MEM_HEADER_PTR(ptr) \
 257     (mem_debug_header_t *)((char*)ptr - offsetof(mem_debug_header_t, magic3))
 258
 259 struct mem_debug_header {
 260     unsigned magic1;
 261     unsigned size;
 262     struct mem_debug_header *prev;
 263     struct mem_debug_header *next;
 264     int line_num;
 265     char file_name[MEM_DEBUG_FILE_LEN + 1];
 266     unsigned magic2;
 267     __attribute__((aligned(16))) unsigned magic3;
 268 };
 269
 270 typedef struct mem_debug_header mem_debug_header_t;
 271
 272 static mem_debug_header_t *mem_debug_chain;
 273 static unsigned mem_cur_size;
 274 static unsigned mem_max_size;
 275
 276 static mem_debug_header_t *malloc_check(void *ptr, const char *msg)
 277 {
 278     mem_debug_header_t * header = MEM_HEADER_PTR(ptr);
 279     if (header->magic1 != MEM_DEBUG_MAGIC1 ||
 280         header->magic2 != MEM_DEBUG_MAGIC2 ||
 281         MEM_DEBUG_CHECK3(header) != MEM_DEBUG_MAGIC3 ||
 282         header->size == (unsigned)-1) {
 283         fprintf(stderr, "%s check failed\n", msg);
 284         if (header->magic1 == MEM_DEBUG_MAGIC1)
 285             fprintf(stderr, "%s:%u: block allocated here.\n",
 286                 header->file_name, header->line_num);
 287         exit(1);
 288     }
 289     return header;
 290 }
 291
 292 PUB_FUNC void *tcc_malloc_debug(unsigned long size, const char *file, int line)
 293 {
 294     int ofs;
 295     mem_debug_header_t *header;
 296
 297     header = malloc(sizeof(mem_debug_header_t) + size);
 298     if (!header)
 299         tcc_error("memory full (malloc)");
 300
 301     header->magic1 = MEM_DEBUG_MAGIC1;
 302     header->magic2 = MEM_DEBUG_MAGIC2;
 303     header->size = size;
 304     MEM_DEBUG_CHECK3(header) = MEM_DEBUG_MAGIC3;
 305     header->line_num = line;
 306     ofs = strlen(file) - MEM_DEBUG_FILE_LEN;
 307     strncpy(header->file_name, file + (ofs > 0 ? ofs : 0), MEM_DEBUG_FILE_LEN);
 308     header->file_name[MEM_DEBUG_FILE_LEN] = 0;
 309
 310     header->next = mem_debug_chain;
 311     header->prev = NULL;
 312     if (header->next)
 313         header->next->prev = header;
 314     mem_debug_chain = header;
 315
 316     mem_cur_size += size;
 317     if (mem_cur_size > mem_max_size)
 318         mem_max_size = mem_cur_size;
 319
 320     return MEM_USER_PTR(header);
 321 }
 322
 323 PUB_FUNC void tcc_free_debug(void *ptr)
 324 {
 325     mem_debug_header_t *header;
 326     if (!ptr)
 327         return;
 328     header = malloc_check(ptr, "tcc_free");
 329     mem_cur_size -= header->size;
 330     header->size = (unsigned)-1;
 331     if (header->next)
 332         header->next->prev = header->prev;
 333     if (header->prev)
 334         header->prev->next = header->next;
 335     if (header == mem_debug_chain)
 336         mem_debug_chain = header->next;
 337     free(header);
 338 }
 339
 340 PUB_FUNC void *tcc_mallocz_debug(unsigned long size, const char *file, int line)
 341 {
 342     void *ptr;
 343     ptr = tcc_malloc_debug(size,file,line);
 344     memset(ptr, 0, size);
 345     return ptr;
 346 }
 347
 348 PUB_FUNC void *tcc_realloc_debug(void *ptr, unsigned long size, const char *file, int line)
 349 {
 350     mem_debug_header_t *header;
 351     int mem_debug_chain_update = 0;
 352     if (!ptr)
 353         return tcc_malloc_debug(size, file, line);
 354     header = malloc_check(ptr, "tcc_realloc");
 355     mem_cur_size -= header->size;
 356     mem_debug_chain_update = (header == mem_debug_chain);
 357     header = realloc(header, sizeof(mem_debug_header_t) + size);
 358     if (!header)
 359         tcc_error("memory full (realloc)");
 360     header->size = size;
 361     MEM_DEBUG_CHECK3(header) = MEM_DEBUG_MAGIC3;
 362     if (header->next)
 363         header->next->prev = header;
 364     if (header->prev)
 365         header->prev->next = header;
 366     if (mem_debug_chain_update)
 367         mem_debug_chain = header;
 368     mem_cur_size += size;
 369     if (mem_cur_size > mem_max_size)
 370         mem_max_size = mem_cur_size;
 371     return MEM_USER_PTR(header);
 372 }
 373
 374 PUB_FUNC char *tcc_strdup_debug(const char *str, const char *file, int line)
 375 {
 376     char *ptr;
 377     ptr = tcc_malloc_debug(strlen(str) + 1, file, line);
 378     strcpy(ptr, str);
 379     return ptr;
 380 }
 381
 382 PUB_FUNC void tcc_memstats(int bench)
 383 {
 384     if (mem_cur_size) {
 385         mem_debug_header_t *header = mem_debug_chain;
 386         fprintf(stderr, "MEM_DEBUG: mem_leak= %d bytes, mem_max_size= %d bytes\n",
 387             mem_cur_size, mem_max_size);
 388         while (header) {
 389             fprintf(stderr, "%s:%u: error: %u bytes leaked\n",
 390                 header->file_name, header->line_num, header->size);
 391             header = header->next;
 392         }
 393 #if MEM_DEBUG-0 == 2
 394         exit(2);
 395 #endif
 396     } else if (bench)
 397         fprintf(stderr, "mem_max_size= %d bytes\n", mem_max_size);
 398 }
 399 #endif /* MEM_DEBUG */
 400
 401 #define free(p) use_tcc_free(p)
 402 #define malloc(s) use_tcc_malloc(s)
 403 #define realloc(p, s) use_tcc_realloc(p, s)
 404
 405 /********************************************************/
 406 /* dynarrays */
 407
 408 ST_FUNC void dynarray_add(void *ptab, int *nb_ptr, void *data)
 409 {
 410     int nb, nb_alloc;
 411     void **pp;
 412
 413     nb = *nb_ptr;
 414     pp = *(void ***)ptab;
 415     /* every power of two we double array size */
 416     if ((nb & (nb - 1)) == 0) {
 417         if (!nb)
 418             nb_alloc = 1;
 419         else
 420             nb_alloc = nb * 2;
 421         pp = tcc_realloc(pp, nb_alloc * sizeof(void *));
 422         *(void***)ptab = pp;
 423     }
 424     pp[nb++] = data;
 425     *nb_ptr = nb;
 426 }
 427
 428 ST_FUNC void dynarray_reset(void *pp, int *n)
 429 {
 430     void **p;
 431     for (p = *(void***)pp; *n; ++p, --*n)
 432         if (*p)
 433             tcc_free(*p);
 434     tcc_free(*(void**)pp);
 435     *(void**)pp = NULL;
 436 }
 437
 438 static void tcc_split_path(TCCState *s, void ***p_ary, int *p_nb_ary, const char *in)
 439 {
 440     const char *p;
 441     do {
 442         int c;
 443         CString str;
 444
 445         cstr_new(&str);
 446         for (p = in; c = *p, c != '\0' && c != PATHSEP; ++p) {
 447             if (c == '{' && p[1] && p[2] == '}') {
 448                 c = p[1], p += 2;
 449                 if (c == 'B')
 450                     cstr_cat(&str, s->tcc_lib_path, -1);
 451             } else {
 452                 cstr_ccat(&str, c);
 453             }
 454         }
 455         if (str.size) {
 456             cstr_ccat(&str, '\0');
 457             dynarray_add(p_ary, p_nb_ary, tcc_strdup(str.data));
 458         }
 459         cstr_free(&str);
 460         in = p+1;
 461     } while (*p);
 462 }
 463
 464 /********************************************************/
 465
 466 static void strcat_vprintf(char *buf, int buf_size, const char *fmt, va_list ap)
 467 {
 468     int len;
 469     len = strlen(buf);
 470     vsnprintf(buf + len, buf_size - len, fmt, ap);
 471 }
 472
 473 static void strcat_printf(char *buf, int buf_size, const char *fmt, ...)
 474 {
 475     va_list ap;
 476     va_start(ap, fmt);
 477     strcat_vprintf(buf, buf_size, fmt, ap);
 478     va_end(ap);
 479 }
 480
 481 static void error1(TCCState *s1, int is_warning, const char *fmt, va_list ap)
 482 {
 483     char buf[2048];
 484     BufferedFile **pf, *f;
 485
 486     buf[0] = '\0';
 487     /* use upper file if inline ":asm:" or token ":paste:" */
 488     for (f = file; f && f->filename[0] == ':'; f = f->prev)
 489      ;
 490     if (f) {
 491         for(pf = s1->include_stack; pf < s1->include_stack_ptr; pf++)
 492             strcat_printf(buf, sizeof(buf), "In file included from %s:%d:\n",
 493                 (*pf)->filename, (*pf)->line_num);
 494         if (f->line_num > 0) {
 495             strcat_printf(buf, sizeof(buf), "%s:%d: ",
 496                 f->filename, f->line_num - !!(tok_flags & TOK_FLAG_BOL));
 497         } else {
 498             strcat_printf(buf, sizeof(buf), "%s: ",
 499                 f->filename);
 500         }
 501     } else {
 502         strcat_printf(buf, sizeof(buf), "tcc: ");
 503     }
 504     if (is_warning)
 505         strcat_printf(buf, sizeof(buf), "warning: ");
 506     else
 507         strcat_printf(buf, sizeof(buf), "error: ");
 508     strcat_vprintf(buf, sizeof(buf), fmt, ap);
 509
 510     if (!s1->error_func) {
 511         /* default case: stderr */
 512         if (s1->ppfp) /* print a newline during tcc -E */
 513             fprintf(s1->ppfp, "\n"), fflush(s1->ppfp);
 514         fflush(stdout); /* flush -v output */
 515         fprintf(stderr, "%s\n", buf);
 516         fflush(stderr); /* print error/warning now (win32) */
 517     } else {
 518         s1->error_func(s1->error_opaque, buf);
 519     }
 520     if (!is_warning || s1->warn_error)
 521         s1->nb_errors++;
 522 }
 523
 524 LIBTCCAPI void tcc_set_error_func(TCCState *s, void *error_opaque,
 525                         void (*error_func)(void *opaque, const char *msg))
 526 {
 527     s->error_opaque = error_opaque;
 528     s->error_func = error_func;
 529 }
 530
 531 /* error without aborting current compilation */
 532 PUB_FUNC void tcc_error_noabort(const char *fmt, ...)
 533 {
 534     TCCState *s1 = tcc_state;
 535     va_list ap;
 536
 537     va_start(ap, fmt);
 538     error1(s1, 0, fmt, ap);
 539     va_end(ap);
 540 }
 541
 542 PUB_FUNC void tcc_error(const char *fmt, ...)
 543 {
 544     TCCState *s1 = tcc_state;
 545     va_list ap;
 546
 547     va_start(ap, fmt);
 548     error1(s1, 0, fmt, ap);
 549     va_end(ap);
 550     /* better than nothing: in some cases, we accept to handle errors */
 551     if (s1->error_set_jmp_enabled) {
 552         longjmp(s1->error_jmp_buf, 1);
 553     } else {
 554         /* XXX: eliminate this someday */
 555         exit(1);
 556     }
 557 }
 558
 559 PUB_FUNC void tcc_warning(const char *fmt, ...)
 560 {
 561     TCCState *s1 = tcc_state;
 562     va_list ap;
 563
 564     if (s1->warn_none)
 565         return;
 566
 567     va_start(ap, fmt);
 568     error1(s1, 1, fmt, ap);
 569     va_end(ap);
 570 }
 571
 572 /********************************************************/
 573 /* I/O layer */
 574
 575 ST_FUNC void tcc_open_bf(TCCState *s1, const char *filename, int initlen)
 576 {
 577     BufferedFile *bf;
 578     int buflen = initlen ? initlen : IO_BUF_SIZE;
 579
 580     bf = tcc_mallocz(sizeof(BufferedFile) + buflen);
 581     bf->buf_ptr = bf->buffer;
 582     bf->buf_end = bf->buffer + initlen;
 583     bf->buf_end[0] = CH_EOB; /* put eob symbol */
 584     pstrcpy(bf->filename, sizeof(bf->filename), filename);
 585 #ifdef _WIN32
 586     normalize_slashes(bf->filename);
 587 #endif
 588     bf->line_num = 1;
 589     bf->ifdef_stack_ptr = s1->ifdef_stack_ptr;
 590     bf->fd = -1;
 591     bf->prev = file;
 592     file = bf;
 593 }
 594
 595 ST_FUNC void tcc_close(void)
 596 {
 597     BufferedFile *bf = file;
 598     if (bf->fd > 0) {
 599         close(bf->fd);
 600         total_lines += bf->line_num;
 601     }
 602     file = bf->prev;
 603     tcc_free(bf);
 604 }
 605
 606 ST_FUNC int tcc_open(TCCState *s1, const char *filename)
 607 {
 608     int fd;
 609     if (strcmp(filename, "-") == 0)
 610         fd = 0, filename = "<stdin>";
 611     else
 612         fd = open(filename, O_RDONLY | O_BINARY);
 613     if ((s1->verbose == 2 && fd >= 0) || s1->verbose == 3)
 614         printf("%s %*s%s\n", fd < 0 ? "nf":"->",
 615                (int)(s1->include_stack_ptr - s1->include_stack), "", filename);
 616     if (fd < 0)
 617         return -1;
 618
 619     tcc_open_bf(s1, filename, 0);
 620     file->fd = fd;
 621     return fd;
 622 }
 623
 624 /* compile the C file opened in 'file'. Return non zero if errors. */
 625 static int tcc_compile(TCCState *s1)
 626 {
 627     Sym *define_start;
 628
 629     define_start = define_stack;
 630     if (setjmp(s1->error_jmp_buf) == 0) {
 631         s1->nb_errors = 0;
 632         s1->error_set_jmp_enabled = 1;
 633
 634         preprocess_start(s1);
 635         tccgen_start(s1);
 636
 637 #ifdef INC_DEBUG
 638         printf("%s: **** new file\n", file->filename);
 639 #endif
 640
 641         ch = file->buf_ptr[0];
 642         tok_flags = TOK_FLAG_BOL | TOK_FLAG_BOF;
 643         parse_flags = PARSE_FLAG_PREPROCESS | PARSE_FLAG_TOK_NUM | PARSE_FLAG_TOK_STR;
 644         next();
 645         decl(VT_CONST);
 646         if (tok != TOK_EOF)
 647             expect("declaration");
 648         /* free defines here already on behalf of of M.M.'s possibly existing
 649            experimental preprocessor implementation. The normal call below
 650            is still there to free after error-longjmp */
 651         free_defines(define_start);
 652         tccgen_end(s1);
 653     }
 654     s1->error_set_jmp_enabled = 0;
 655
 656     free_inline_functions(s1);
 657     /* reset define stack, but keep -D and built-ins */
 658     free_defines(define_start);
 659     sym_pop(&global_stack, NULL, 0);
 660     sym_pop(&local_stack, NULL, 0);
 661     return s1->nb_errors != 0 ? -1 : 0;
 662 }
 663
 664 LIBTCCAPI int tcc_compile_string(TCCState *s, const char *str)
 665 {
 666     int len, ret;
 667
 668     len = strlen(str);
 669     tcc_open_bf(s, "<string>", len);
 670     memcpy(file->buffer, str, len);
 671     ret = tcc_compile(s);
 672     tcc_close();
 673     return ret;
 674 }
 675
 676 /* define a preprocessor symbol. A value can also be provided with the '=' operator */
 677 LIBTCCAPI void tcc_define_symbol(TCCState *s1, const char *sym, const char *value)
 678 {
 679     int len1, len2;
 680     /* default value */
 681     if (!value)
 682         value = "1";
 683     len1 = strlen(sym);
 684     len2 = strlen(value);
 685
 686     /* init file structure */
 687     tcc_open_bf(s1, "<define>", len1 + len2 + 1);
 688     memcpy(file->buffer, sym, len1);
 689     file->buffer[len1] = ' ';
 690     memcpy(file->buffer + len1 + 1, value, len2);
 691
 692     /* parse with define parser */
 693     ch = file->buf_ptr[0];
 694     next_nomacro();
 695     parse_define();
 696
 697     tcc_close();
 698 }
 699
 700 /* undefine a preprocessor symbol */
 701 LIBTCCAPI void tcc_undefine_symbol(TCCState *s1, const char *sym)
 702 {
 703     TokenSym *ts;
 704     Sym *s;
 705     ts = tok_alloc(sym, strlen(sym));
 706     s = define_find(ts->tok);
 707     /* undefine symbol by putting an invalid name */
 708     if (s)
 709         define_undef(s);
 710 }
 711
 712 /* cleanup all static data used during compilation */
 713 static void tcc_cleanup(void)
 714 {
 715     if (NULL == tcc_state)
 716         return;
 717     tccpp_delete(tcc_state);
 718     tcc_state = NULL;
 719     /* free sym_pools */
 720     dynarray_reset(&sym_pools, &nb_sym_pools);
 721     /* reset symbol stack */
 722     sym_free_first = NULL;
 723 }
 724
 725 LIBTCCAPI TCCState *tcc_new(void)
 726 {
 727     TCCState *s;
 728
 729     tcc_cleanup();
 730
 731     s = tcc_mallocz(sizeof(TCCState));
 732     if (!s)
 733         return NULL;
 734     tcc_state = s;
 735     ++nb_states;
 736
 737     s->alacarte_link = 1;
 738     s->nocommon = 1;
 739     s->warn_implicit_function_declaration = 1;
 740
 741 #ifdef CHAR_IS_UNSIGNED
 742     s->char_is_unsigned = 1;
 743 #endif
 744 #ifdef TCC_TARGET_I386
 745     s->seg_size = 32;
 746 #endif
 747 #ifdef TCC_IS_NATIVE
 748     s->runtime_main = "main";
 749 #endif
 750     /* enable this if you want symbols with leading underscore on windows: */
 751 #if 0 /* def TCC_TARGET_PE */
 752     s->leading_underscore = 1;
 753 #endif
 754 #ifdef _WIN32
 755     tcc_set_lib_path_w32(s);
 756 #else
 757     tcc_set_lib_path(s, CONFIG_TCCDIR);
 758 #endif
 759     tccelf_new(s);
 760     tccpp_new(s);
 761
 762     /* we add dummy defines for some special macros to speed up tests
 763        and to have working defined() */
 764     define_push(TOK___LINE__, MACRO_OBJ, NULL, NULL);
 765     define_push(TOK___FILE__, MACRO_OBJ, NULL, NULL);
 766     define_push(TOK___DATE__, MACRO_OBJ, NULL, NULL);
 767     define_push(TOK___TIME__, MACRO_OBJ, NULL, NULL);
 768     {
 769         /* define __TINYC__ 92X  */
 770         char buffer[32]; int a,b,c;
 771         sscanf(TCC_VERSION, "%d.%d.%d", &a, &b, &c);
 772         sprintf(buffer, "%d", a*10000 + b*100 + c);
 773         tcc_define_symbol(s, "__TINYC__", buffer);
 774     }
 775
 776     /* standard defines */
 777     tcc_define_symbol(s, "__STDC__", NULL);
 778     tcc_define_symbol(s, "__STDC_VERSION__", "199901L");
 779     tcc_define_symbol(s, "__STDC_HOSTED__", NULL);
 780
 781     /* target defines */
 782 #if defined(TCC_TARGET_I386)
 783     tcc_define_symbol(s, "__i386__", NULL);
 784     tcc_define_symbol(s, "__i386", NULL);
 785     tcc_define_symbol(s, "i386", NULL);
 786 #elif defined(TCC_TARGET_X86_64)
 787     tcc_define_symbol(s, "__x86_64__", NULL);
 788 #elif defined(TCC_TARGET_ARM)
 789     tcc_define_symbol(s, "__ARM_ARCH_4__", NULL);
 790     tcc_define_symbol(s, "__arm_elf__", NULL);
 791     tcc_define_symbol(s, "__arm_elf", NULL);
 792     tcc_define_symbol(s, "arm_elf", NULL);
 793     tcc_define_symbol(s, "__arm__", NULL);
 794     tcc_define_symbol(s, "__arm", NULL);
 795     tcc_define_symbol(s, "arm", NULL);
 796     tcc_define_symbol(s, "__APCS_32__", NULL);
 797     tcc_define_symbol(s, "__ARMEL__", NULL);
 798 #if defined(TCC_ARM_EABI)
 799     tcc_define_symbol(s, "__ARM_EABI__", NULL);
 800 #endif
 801 #if defined(TCC_ARM_HARDFLOAT)
 802     s->float_abi = ARM_HARD_FLOAT;
 803     tcc_define_symbol(s, "__ARM_PCS_VFP", NULL);
 804 #else
 805     s->float_abi = ARM_SOFTFP_FLOAT;
 806 #endif
 807 #elif defined(TCC_TARGET_ARM64)
 808     tcc_define_symbol(s, "__aarch64__", NULL);
 809 #endif
 810
 811 #ifdef TCC_TARGET_PE
 812     tcc_define_symbol(s, "_WIN32", NULL);
 813 # ifdef TCC_TARGET_X86_64
 814     tcc_define_symbol(s, "_WIN64", NULL);
 815 # endif
 816 #else
 817     tcc_define_symbol(s, "__unix__", NULL);
 818     tcc_define_symbol(s, "__unix", NULL);
 819     tcc_define_symbol(s, "unix", NULL);
 820 # if defined(__linux__)
 821     tcc_define_symbol(s, "__linux__", NULL);
 822     tcc_define_symbol(s, "__linux", NULL);
 823 # endif
 824 # if defined(__FreeBSD__)
 825     tcc_define_symbol(s, "__FreeBSD__", "__FreeBSD__");
 826     /* No 'Thread Storage Local' on FreeBSD with tcc */
 827     tcc_define_symbol(s, "__NO_TLS", NULL);
 828 # endif
 829 # if defined(__FreeBSD_kernel__)
 830     tcc_define_symbol(s, "__FreeBSD_kernel__", NULL);
 831 # endif
 832 #endif
 833 # if defined(__NetBSD__)
 834     tcc_define_symbol(s, "__NetBSD__", "__NetBSD__");
 835 # endif
 836 # if defined(__OpenBSD__)
 837     tcc_define_symbol(s, "__OpenBSD__", "__OpenBSD__");
 838 # endif
 839
 840     /* TinyCC & gcc defines */
 841 #if defined(TCC_TARGET_PE) && defined(TCC_TARGET_X86_64)
 842     /* 64bit Windows. */
 843     tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned long long");
 844     tcc_define_symbol(s, "__PTRDIFF_TYPE__", "long long");
 845     tcc_define_symbol(s, "__LLP64__", NULL);
 846 #elif defined(TCC_TARGET_X86_64) || defined(TCC_TARGET_ARM64)
 847     /* Other 64bit systems. */
 848     tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned long");
 849     tcc_define_symbol(s, "__PTRDIFF_TYPE__", "long");
 850     tcc_define_symbol(s, "__LP64__", NULL);
 851 #else
 852     /* Other 32bit systems. */
 853     tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned long");
 854     tcc_define_symbol(s, "__PTRDIFF_TYPE__", "long");
 855     tcc_define_symbol(s, "__ILP32__", NULL);
 856 #endif
 857
 858 #ifdef TCC_TARGET_PE
 859     tcc_define_symbol(s, "__WCHAR_TYPE__", "unsigned short");
 860     tcc_define_symbol(s, "__WINT_TYPE__", "unsigned short");
 861 #else
 862     tcc_define_symbol(s, "__WCHAR_TYPE__", "int");
 863     /* wint_t is unsigned int by default, but (signed) int on BSDs
 864        and unsigned short on windows.  Other OSes might have still
 865        other conventions, sigh.  */
 866 # if defined(__FreeBSD__) || defined (__FreeBSD_kernel__) \
 867   || defined(__NetBSD__) || defined(__OpenBSD__)
 868     tcc_define_symbol(s, "__WINT_TYPE__", "int");
 869 #  ifdef __FreeBSD__
 870     /* define __GNUC__ to have some useful stuff from sys/cdefs.h
 871        that are unconditionally used in FreeBSDs other system headers :/ */
 872     tcc_define_symbol(s, "__GNUC__", "2");
 873     tcc_define_symbol(s, "__GNUC_MINOR__", "7");
 874     tcc_define_symbol(s, "__builtin_alloca", "alloca");
 875 #  endif
 876 # else
 877     tcc_define_symbol(s, "__WINT_TYPE__", "unsigned int");
 878     /* glibc defines */
 879     tcc_define_symbol(s, "__REDIRECT(name, proto, alias)",
 880         "name proto __asm__ (#alias)");
 881     tcc_define_symbol(s, "__REDIRECT_NTH(name, proto, alias)",
 882         "name proto __asm__ (#alias) __THROW");
 883 # endif
 884 #endif /* ndef TCC_TARGET_PE */
 885
 886     /* Some GCC builtins that are simple to express as macros.  */
 887     tcc_define_symbol(s, "__builtin_extract_return_addr(x)", "x");
 888
 889     return s;
 890 }
 891
 892 LIBTCCAPI void tcc_delete(TCCState *s1)
 893 {
 894     int bench = s1->do_bench;
 895
 896     tcc_cleanup();
 897
 898     /* free sections */
 899     tccelf_delete(s1);
 900
 901     /* free library paths */
 902     dynarray_reset(&s1->library_paths, &s1->nb_library_paths);
 903     dynarray_reset(&s1->crt_paths, &s1->nb_crt_paths);
 904
 905     /* free include paths */
 906     dynarray_reset(&s1->cached_includes, &s1->nb_cached_includes);
 907     dynarray_reset(&s1->include_paths, &s1->nb_include_paths);
 908     dynarray_reset(&s1->sysinclude_paths, &s1->nb_sysinclude_paths);
 909     dynarray_reset(&s1->cmd_include_files, &s1->nb_cmd_include_files);
 910
 911     tcc_free(s1->tcc_lib_path);
 912     tcc_free(s1->soname);
 913     tcc_free(s1->rpath);
 914     tcc_free(s1->init_symbol);
 915     tcc_free(s1->fini_symbol);
 916     tcc_free(s1->outfile);
 917     tcc_free(s1->deps_outfile);
 918     dynarray_reset(&s1->files, &s1->nb_files);
 919     dynarray_reset(&s1->target_deps, &s1->nb_target_deps);
 920     dynarray_reset(&s1->pragma_libs, &s1->nb_pragma_libs);
 921
 922 #ifdef TCC_IS_NATIVE
 923     /* free runtime memory */
 924     tcc_run_free(s1);
 925 #endif
 926
 927     tcc_free(s1);
 928     if (0 == --nb_states)
 929         tcc_memstats(bench);
 930 }
 931
 932 LIBTCCAPI int tcc_set_output_type(TCCState *s, int output_type)
 933 {
 934     s->output_type = output_type;
 935
 936     /* always elf for objects */
 937     if (output_type == TCC_OUTPUT_OBJ)
 938         s->output_format = TCC_OUTPUT_FORMAT_ELF;
 939
 940     if (s->char_is_unsigned)
 941         tcc_define_symbol(s, "__CHAR_UNSIGNED__", NULL);
 942
 943     if (!s->nostdinc) {
 944         /* default include paths */
 945         /* -isystem paths have already been handled */
 946         tcc_add_sysinclude_path(s, CONFIG_TCC_SYSINCLUDEPATHS);
 947     }
 948
 949 #ifdef CONFIG_TCC_BCHECK
 950     if (s->do_bounds_check) {
 951         /* if bound checking, then add corresponding sections */
 952         tccelf_bounds_new(s);
 953         /* define symbol */
 954         tcc_define_symbol(s, "__BOUNDS_CHECKING_ON", NULL);
 955     }
 956 #endif
 957     if (s->do_debug) {
 958         /* add debug sections */
 959         tccelf_stab_new(s);
 960     }
 961
 962     tcc_add_library_path(s, CONFIG_TCC_LIBPATHS);
 963
 964 #ifdef TCC_TARGET_PE
 965 # ifdef _WIN32
 966     if (!s->nostdlib && output_type != TCC_OUTPUT_OBJ)
 967         tcc_add_systemdir(s);
 968 # endif
 969 #else
 970     /* paths for crt objects */
 971     tcc_split_path(s, (void ***)&s->crt_paths, &s->nb_crt_paths, CONFIG_TCC_CRTPREFIX);
 972     /* add libc crt1/crti objects */
 973     if ((output_type == TCC_OUTPUT_EXE || output_type == TCC_OUTPUT_DLL) &&
 974         !s->nostdlib) {
 975         if (output_type != TCC_OUTPUT_DLL)
 976             tcc_add_crt(s, "crt1.o");
 977         tcc_add_crt(s, "crti.o");
 978     }
 979 #endif
 980     return 0;
 981 }
 982
 983 LIBTCCAPI int tcc_add_include_path(TCCState *s, const char *pathname)
 984 {
 985     tcc_split_path(s, (void ***)&s->include_paths, &s->nb_include_paths, pathname);
 986     return 0;
 987 }
 988
 989 LIBTCCAPI int tcc_add_sysinclude_path(TCCState *s, const char *pathname)
 990 {
 991     tcc_split_path(s, (void ***)&s->sysinclude_paths, &s->nb_sysinclude_paths, pathname);
 992     return 0;
 993 }
 994
 995 ST_FUNC int tcc_add_file_internal(TCCState *s1, const char *filename, int flags)
 996 {
 997     int ret, filetype;
 998
 999     filetype = flags & 0x0F;
1000     if (filetype == 0) {
1001         /* use a file extension to detect a filetype */
1002         const char *ext = tcc_fileextension(filename);
1003         if (ext[0]) {
1004             ext++;
1005             if (!strcmp(ext, "S"))
1006                 filetype = AFF_TYPE_ASMPP;
1007             else if (!strcmp(ext, "s"))
1008                 filetype = AFF_TYPE_ASM;
1009             else if (!PATHCMP(ext, "c") || !PATHCMP(ext, "i"))
1010                 filetype = AFF_TYPE_C;
1011             else
1012                 filetype = AFF_TYPE_BIN;
1013         } else {
1014             filetype = AFF_TYPE_C;
1015         }
1016     }
1017
1018     /* open the file */
1019     ret = tcc_open(s1, filename);
1020     if (ret < 0) {
1021         if (flags & AFF_PRINT_ERROR)
1022             tcc_error_noabort("file '%s' not found", filename);
1023         return ret;
1024     }
1025
1026     /* update target deps */
1027     dynarray_add(&s1->target_deps, &s1->nb_target_deps,
1028             tcc_strdup(filename));
1029
1030     parse_flags = 0;
1031     /* if .S file, define __ASSEMBLER__ like gcc does */
1032     if (filetype == AFF_TYPE_ASM || filetype == AFF_TYPE_ASMPP) {
1033         tcc_define_symbol(s1, "__ASSEMBLER__", NULL);
1034         parse_flags = PARSE_FLAG_ASM_FILE;
1035     }
1036
1037     if (flags & AFF_PREPROCESS) {
1038         ret = tcc_preprocess(s1);
1039     } else if (filetype == AFF_TYPE_C) {
1040         ret = tcc_compile(s1);
1041 #ifdef CONFIG_TCC_ASM
1042     } else if (filetype == AFF_TYPE_ASMPP) {
1043         /* non preprocessed assembler */
1044         ret = tcc_assemble(s1, 1);
1045     } else if (filetype == AFF_TYPE_ASM) {
1046         /* preprocessed assembler */
1047         ret = tcc_assemble(s1, 0);
1048 #endif
1049     } else {
1050         ElfW(Ehdr) ehdr;
1051         int fd, obj_type;
1052
1053         fd = file->fd;
1054         obj_type = tcc_object_type(fd, &ehdr);
1055         lseek(fd, 0, SEEK_SET);
1056
1057         /* do not display line number if error */
1058         file->line_num = 0;
1059
1060         switch (obj_type) {
1061         case AFF_BINTYPE_REL:
1062             ret = tcc_load_object_file(s1, fd, 0);
1063             break;
1064 #ifndef TCC_TARGET_PE
1065         case AFF_BINTYPE_DYN:
1066             if (s1->output_type == TCC_OUTPUT_MEMORY) {
1067                 ret = 0;
1068 #ifdef TCC_IS_NATIVE
1069                 if (NULL == dlopen(filename, RTLD_GLOBAL | RTLD_LAZY))
1070                     ret = -1;
1071 #endif
1072             } else {
1073                 ret = tcc_load_dll(s1, fd, filename,
1074                                    (flags & AFF_REFERENCED_DLL) != 0);
1075             }
1076             break;
1077 #endif
1078         case AFF_BINTYPE_AR:
1079             ret = tcc_load_archive(s1, fd);
1080             break;
1081 #ifdef TCC_TARGET_COFF
1082         case AFF_BINTYPE_C67:
1083             ret = tcc_load_coff(s1, fd);
1084             break;
1085 #endif
1086         default:
1087 #ifdef TCC_TARGET_PE
1088             ret = pe_load_file(s1, filename, fd);
1089 #else
1090             /* as GNU ld, consider it is an ld script if not recognized */
1091             ret = tcc_load_ldscript(s1);
1092 #endif
1093             if (ret < 0)
1094                 tcc_error_noabort("unrecognized file type");
1095             break;
1096         }
1097     }
1098     tcc_close();
1099     return ret;
1100 }
1101
1102 LIBTCCAPI int tcc_add_file(TCCState *s, const char *filename)
1103 {
1104     if (s->output_type == TCC_OUTPUT_PREPROCESS)
1105         return tcc_add_file_internal(s, filename, AFF_PRINT_ERROR | AFF_PREPROCESS | s->filetype);
1106     else
1107         return tcc_add_file_internal(s, filename, AFF_PRINT_ERROR | s->filetype);
1108 }
1109
1110 LIBTCCAPI int tcc_add_library_path(TCCState *s, const char *pathname)
1111 {
1112     tcc_split_path(s, (void ***)&s->library_paths, &s->nb_library_paths, pathname);
1113     return 0;
1114 }
1115
1116 static int tcc_add_library_internal(TCCState *s, const char *fmt,
1117     const char *filename, int flags, char **paths, int nb_paths)
1118 {
1119     char buf[1024];
1120     int i;
1121
1122     for(i = 0; i < nb_paths; i++) {
1123         snprintf(buf, sizeof(buf), fmt, paths[i], filename);
1124         if (tcc_add_file_internal(s, buf, flags | AFF_TYPE_BIN) == 0)
1125             return 0;
1126     }
1127     return -1;
1128 }
1129
1130 #ifndef TCC_TARGET_PE
1131 /* find and load a dll. Return non zero if not found */
1132 /* XXX: add '-rpath' option support ? */
1133 ST_FUNC int tcc_add_dll(TCCState *s, const char *filename, int flags)
1134 {
1135     return tcc_add_library_internal(s, "%s/%s", filename, flags,
1136         s->library_paths, s->nb_library_paths);
1137 }
1138 #endif
1139
1140 ST_FUNC int tcc_add_crt(TCCState *s, const char *filename)
1141 {
1142     if (-1 == tcc_add_library_internal(s, "%s/%s",
1143         filename, 0, s->crt_paths, s->nb_crt_paths))
1144         tcc_error_noabort("file '%s' not found", filename);
1145     return 0;
1146 }
1147
1148 /* the library name is the same as the argument of the '-l' option */
1149 LIBTCCAPI int tcc_add_library(TCCState *s, const char *libraryname)
1150 {
1151 #ifdef TCC_TARGET_PE
1152     const char *libs[] = { "%s/%s.def", "%s/lib%s.def", "%s/%s.dll", "%s/lib%s.dll", "%s/lib%s.a", NULL };
1153     const char **pp = s->static_link ? libs + 4 : libs;
1154 #else
1155     const char *libs[] = { "%s/lib%s.so", "%s/lib%s.a", NULL };
1156     const char **pp = s->static_link ? libs + 1 : libs;
1157 #endif
1158     while (*pp) {
1159         if (0 == tcc_add_library_internal(s, *pp,
1160             libraryname, 0, s->library_paths, s->nb_library_paths))
1161             return 0;
1162         ++pp;
1163     }
1164     return -1;
1165 }
1166
1167 PUB_FUNC int tcc_add_library_err(TCCState *s, const char *libname)
1168 {
1169     int ret = tcc_add_library(s, libname);
1170     if (ret < 0)
1171         tcc_error_noabort("library '%s' not found", libname);
1172     return ret;
1173 }
1174
1175 /* habdle #pragma comment(lib,) */
1176 ST_FUNC void tcc_add_pragma_libs(TCCState *s1)
1177 {
1178     int i;
1179     for (i = 0; i < s1->nb_pragma_libs; i++)
1180         tcc_add_library_err(s1, s1->pragma_libs[i]);
1181 }
1182
1183 LIBTCCAPI int tcc_add_symbol(TCCState *s, const char *name, const void *val)
1184 {
1185 #ifdef TCC_TARGET_PE
1186     /* On x86_64 'val' might not be reachable with a 32bit offset.
1187        So it is handled here as if it were in a DLL. */
1188     pe_putimport(s, 0, name, (uintptr_t)val);
1189 #else
1190     set_elf_sym(symtab_section, (uintptr_t)val, 0,
1191         ELFW(ST_INFO)(STB_GLOBAL, STT_NOTYPE), 0,
1192         SHN_ABS, name);
1193 #endif
1194     return 0;
1195 }
1196
1197 LIBTCCAPI void tcc_set_lib_path(TCCState *s, const char *path)
1198 {
1199     tcc_free(s->tcc_lib_path);
1200     s->tcc_lib_path = tcc_strdup(path);
1201 }
1202
1203 #define WD_ALL    0x0001 /* warning is activated when using -Wall */
1204 #define FD_INVERT 0x0002 /* invert value before storing */
1205
1206 typedef struct FlagDef {
1207     uint16_t offset;
1208     uint16_t flags;
1209     const char *name;
1210 } FlagDef;
1211
1212 static int no_flag(const char **pp)
1213 {
1214     const char *p = *pp;
1215     if (*p != 'n' || *++p != 'o' || *++p != '-')
1216         return 0;
1217     *pp = p + 1;
1218     return 1;
1219 }
1220
1221 ST_FUNC int set_flag(TCCState *s, const FlagDef *flags, const char *name)
1222 {
1223     int value, ret;
1224     const FlagDef *p;
1225     const char *r;
1226
1227     value = 1;
1228     r = name;
1229     if (no_flag(&r))
1230         value = 0;
1231
1232     for (ret = -1, p = flags; p->name; ++p) {
1233         if (ret) {
1234             if (strcmp(r, p->name))
1235                 continue;
1236         } else {
1237             if (0 == (p->flags & WD_ALL))
1238                 continue;
1239         }
1240         if (p->offset) {
1241             *(int*)((char *)s + p->offset) =
1242                 p->flags & FD_INVERT ? !value : value;
1243             if (ret)
1244                 return 0;
1245         } else {
1246             ret = 0;
1247         }
1248     }
1249     return ret;
1250 }
1251
1252 static int strstart(const char *val, const char **str)
1253 {
1254     const char *p, *q;
1255     p = *str;
1256     q = val;
1257     while (*q) {
1258         if (*p != *q)
1259             return 0;
1260         p++;
1261         q++;
1262     }
1263     *str = p;
1264     return 1;
1265 }
1266
1267 /* Like strstart, but automatically takes into account that ld options can
1268  *
1269  * - start with double or single dash (e.g. '--soname' or '-soname')
1270  * - arguments can be given as separate or after '=' (e.g. '-Wl,-soname,x.so'
1271  *   or '-Wl,-soname=x.so')
1272  *
1273  * you provide `val` always in 'option[=]' form (no leading -)
1274  */
1275 static int link_option(const char *str, const char *val, const char **ptr)
1276 {
1277     const char *p, *q;
1278     int ret;
1279
1280     /* there should be 1 or 2 dashes */
1281     if (*str++ != '-')
1282         return 0;
1283     if (*str == '-')
1284         str++;
1285
1286     /* then str & val should match (potentialy up to '=') */
1287     p = str;
1288     q = val;
1289
1290     ret = 1;
1291     if (q[0] == '?') {
1292         ++q;
1293         if (no_flag(&p))
1294             ret = -1;
1295     }
1296
1297     while (*q != '\0' && *q != '=') {
1298         if (*p != *q)
1299             return 0;
1300         p++;
1301         q++;
1302     }
1303
1304     /* '=' near eos means ',' or '=' is ok */
1305     if (*q == '=') {
1306         if (*p == 0)
1307             *ptr = p;
1308         if (*p != ',' && *p != '=')
1309             return 0;
1310         p++;
1311     }
1312     *ptr = p;
1313     return ret;
1314 }
1315
1316 static const char *skip_linker_arg(const char **str)
1317 {
1318     const char *s1 = *str;
1319     const char *s2 = strchr(s1, ',');
1320     *str = s2 ? s2++ : (s2 = s1 + strlen(s1));
1321     return s2;
1322 }
1323
1324 static void copy_linker_arg(char **pp, const char *s, int sep)
1325 {
1326     const char *q = s;
1327     char *p = *pp;
1328     int l = 0;
1329     if (p && sep)
1330         p[l = strlen(p)] = sep, ++l;
1331     skip_linker_arg(&q);
1332     pstrncpy(l + (*pp = tcc_realloc(p, q - s + l + 1)), s, q - s);
1333 }
1334
1335 /* set linker options */
1336 static int tcc_set_linker(TCCState *s, const char *option)
1337 {
1338     while (*option) {
1339
1340         const char *p = NULL;
1341         char *end = NULL;
1342         int ignoring = 0;
1343         int ret;
1344
1345         if (link_option(option, "Bsymbolic", &p)) {
1346             s->symbolic = 1;
1347         } else if (link_option(option, "nostdlib", &p)) {
1348             s->nostdlib = 1;
1349         } else if (link_option(option, "fini=", &p)) {
1350             copy_linker_arg(&s->fini_symbol, p, 0);
1351             ignoring = 1;
1352         } else if (link_option(option, "image-base=", &p)
1353                 || link_option(option, "Ttext=", &p)) {
1354             s->text_addr = strtoull(p, &end, 16);
1355             s->has_text_addr = 1;
1356         } else if (link_option(option, "init=", &p)) {
1357             copy_linker_arg(&s->init_symbol, p, 0);
1358             ignoring = 1;
1359         } else if (link_option(option, "oformat=", &p)) {
1360 #if defined(TCC_TARGET_PE)
1361             if (strstart("pe-", &p)) {
1362 #elif defined(TCC_TARGET_ARM64) || defined(TCC_TARGET_X86_64)
1363             if (strstart("elf64-", &p)) {
1364 #else
1365             if (strstart("elf32-", &p)) {
1366 #endif
1367                 s->output_format = TCC_OUTPUT_FORMAT_ELF;
1368             } else if (!strcmp(p, "binary")) {
1369                 s->output_format = TCC_OUTPUT_FORMAT_BINARY;
1370 #ifdef TCC_TARGET_COFF
1371             } else if (!strcmp(p, "coff")) {
1372                 s->output_format = TCC_OUTPUT_FORMAT_COFF;
1373 #endif
1374             } else
1375                 goto err;
1376
1377         } else if (link_option(option, "as-needed", &p)) {
1378             ignoring = 1;
1379         } else if (link_option(option, "O", &p)) {
1380             ignoring = 1;
1381         } else if (link_option(option, "rpath=", &p)) {
1382             copy_linker_arg(&s->rpath, p, ':');
1383         } else if (link_option(option, "section-alignment=", &p)) {
1384             s->section_align = strtoul(p, &end, 16);
1385         } else if (link_option(option, "soname=", &p)) {
1386             copy_linker_arg(&s->soname, p, 0);
1387 #ifdef TCC_TARGET_PE
1388         } else if (link_option(option, "large-address-aware", &p)) {
1389             s->pe_characteristics |= 0x20;
1390         } else if (link_option(option, "file-alignment=", &p)) {
1391             s->pe_file_align = strtoul(p, &end, 16);
1392         } else if (link_option(option, "stack=", &p)) {
1393             s->pe_stack_size = strtoul(p, &end, 10);
1394         } else if (link_option(option, "subsystem=", &p)) {
1395 #if defined(TCC_TARGET_I386) || defined(TCC_TARGET_X86_64)
1396             if (!strcmp(p, "native")) {
1397                 s->pe_subsystem = 1;
1398             } else if (!strcmp(p, "console")) {
1399                 s->pe_subsystem = 3;
1400             } else if (!strcmp(p, "gui")) {
1401                 s->pe_subsystem = 2;
1402             } else if (!strcmp(p, "posix")) {
1403                 s->pe_subsystem = 7;
1404             } else if (!strcmp(p, "efiapp")) {
1405                 s->pe_subsystem = 10;
1406             } else if (!strcmp(p, "efiboot")) {
1407                 s->pe_subsystem = 11;
1408             } else if (!strcmp(p, "efiruntime")) {
1409                 s->pe_subsystem = 12;
1410             } else if (!strcmp(p, "efirom")) {
1411                 s->pe_subsystem = 13;
1412 #elif defined(TCC_TARGET_ARM)
1413             if (!strcmp(p, "wince")) {
1414                 s->pe_subsystem = 9;
1415 #endif
1416             } else
1417                 goto err;
1418 #endif
1419         } else if (ret = link_option(option, "?whole-archive", &p), ret) {
1420             s->alacarte_link = ret < 0;
1421         } else if (p) {
1422             return 0;
1423         } else {
1424     err:
1425             tcc_error("unsupported linker option '%s'", option);
1426         }
1427
1428         if (ignoring && s->warn_unsupported)
1429             tcc_warning("unsupported linker option '%s'", option);
1430
1431         option = skip_linker_arg(&p);
1432     }
1433     return 1;
1434 }
1435
1436 typedef struct TCCOption {
1437     const char *name;
1438     uint16_t index;
1439     uint16_t flags;
1440 } TCCOption;
1441
1442 enum {
1443     TCC_OPTION_HELP,
1444     TCC_OPTION_I,
1445     TCC_OPTION_D,
1446     TCC_OPTION_U,
1447     TCC_OPTION_P,
1448     TCC_OPTION_L,
1449     TCC_OPTION_B,
1450     TCC_OPTION_l,
1451     TCC_OPTION_bench,
1452     TCC_OPTION_bt,
1453     TCC_OPTION_b,
1454     TCC_OPTION_g,
1455     TCC_OPTION_c,
1456     TCC_OPTION_dumpversion,
1457     TCC_OPTION_d,
1458     TCC_OPTION_static,
1459     TCC_OPTION_std,
1460     TCC_OPTION_shared,
1461     TCC_OPTION_soname,
1462     TCC_OPTION_o,
1463     TCC_OPTION_r,
1464     TCC_OPTION_s,
1465     TCC_OPTION_traditional,
1466     TCC_OPTION_Wl,
1467     TCC_OPTION_Wp,
1468     TCC_OPTION_W,
1469     TCC_OPTION_O,
1470     TCC_OPTION_mfloat_abi,
1471     TCC_OPTION_m,
1472     TCC_OPTION_f,
1473     TCC_OPTION_isystem,
1474     TCC_OPTION_iwithprefix,
1475     TCC_OPTION_include,
1476     TCC_OPTION_nostdinc,
1477     TCC_OPTION_nostdlib,
1478     TCC_OPTION_print_search_dirs,
1479     TCC_OPTION_rdynamic,
1480     TCC_OPTION_param,
1481     TCC_OPTION_pedantic,
1482     TCC_OPTION_pthread,
1483     TCC_OPTION_run,
1484     TCC_OPTION_v,
1485     TCC_OPTION_w,
1486     TCC_OPTION_pipe,
1487     TCC_OPTION_E,
1488     TCC_OPTION_MD,
1489     TCC_OPTION_MF,
1490     TCC_OPTION_x
1491 };
1492
1493 #define TCC_OPTION_HAS_ARG 0x0001
1494 #define TCC_OPTION_NOSEP   0x0002 /* cannot have space before option and arg */
1495
1496 static const TCCOption tcc_options[] = {
1497     { "h", TCC_OPTION_HELP, 0 },
1498     { "-help", TCC_OPTION_HELP, 0 },
1499     { "?", TCC_OPTION_HELP, 0 },
1500     { "I", TCC_OPTION_I, TCC_OPTION_HAS_ARG },
1501     { "D", TCC_OPTION_D, TCC_OPTION_HAS_ARG },
1502     { "U", TCC_OPTION_U, TCC_OPTION_HAS_ARG },
1503     { "P", TCC_OPTION_P, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1504     { "L", TCC_OPTION_L, TCC_OPTION_HAS_ARG },
1505     { "B", TCC_OPTION_B, TCC_OPTION_HAS_ARG },
1506     { "l", TCC_OPTION_l, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1507     { "bench", TCC_OPTION_bench, 0 },
1508 #ifdef CONFIG_TCC_BACKTRACE
1509     { "bt", TCC_OPTION_bt, TCC_OPTION_HAS_ARG },
1510 #endif
1511 #ifdef CONFIG_TCC_BCHECK
1512     { "b", TCC_OPTION_b, 0 },
1513 #endif
1514     { "g", TCC_OPTION_g, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1515     { "c", TCC_OPTION_c, 0 },
1516     { "dumpversion", TCC_OPTION_dumpversion, 0},
1517     { "d", TCC_OPTION_d, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1518     { "static", TCC_OPTION_static, 0 },
1519     { "std", TCC_OPTION_std, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1520     { "shared", TCC_OPTION_shared, 0 },
1521     { "soname", TCC_OPTION_soname, TCC_OPTION_HAS_ARG },
1522     { "o", TCC_OPTION_o, TCC_OPTION_HAS_ARG },
1523     { "-param", TCC_OPTION_param, TCC_OPTION_HAS_ARG },
1524     { "pedantic", TCC_OPTION_pedantic, 0},
1525     { "pthread", TCC_OPTION_pthread, 0},
1526     { "run", TCC_OPTION_run, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1527     { "rdynamic", TCC_OPTION_rdynamic, 0 },
1528     { "r", TCC_OPTION_r, 0 },
1529     { "s", TCC_OPTION_s, 0 },
1530     { "traditional", TCC_OPTION_traditional, 0 },
1531     { "Wl,", TCC_OPTION_Wl, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1532     { "Wp,", TCC_OPTION_Wp, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1533     { "W", TCC_OPTION_W, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1534     { "O", TCC_OPTION_O, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1535 #ifdef TCC_TARGET_ARM
1536     { "mfloat-abi", TCC_OPTION_mfloat_abi, TCC_OPTION_HAS_ARG },
1537 #endif
1538     { "m", TCC_OPTION_m, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1539     { "f", TCC_OPTION_f, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1540     { "isystem", TCC_OPTION_isystem, TCC_OPTION_HAS_ARG },
1541     { "iwithprefix", TCC_OPTION_iwithprefix, TCC_OPTION_HAS_ARG },
1542     { "include", TCC_OPTION_include, TCC_OPTION_HAS_ARG },
1543     { "nostdinc", TCC_OPTION_nostdinc, 0 },
1544     { "nostdlib", TCC_OPTION_nostdlib, 0 },
1545     { "print-search-dirs", TCC_OPTION_print_search_dirs, 0 },
1546     { "v", TCC_OPTION_v, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1547     { "w", TCC_OPTION_w, 0 },
1548     { "pipe", TCC_OPTION_pipe, 0},
1549     { "E", TCC_OPTION_E, 0},
1550     { "MD", TCC_OPTION_MD, 0},
1551     { "MF", TCC_OPTION_MF, TCC_OPTION_HAS_ARG },
1552     { "x", TCC_OPTION_x, TCC_OPTION_HAS_ARG },
1553     { NULL, 0, 0 },
1554 };
1555
1556 static const FlagDef options_W[] = {
1557     { 0, 0, "all" },
1558     { offsetof(TCCState, warn_unsupported), 0, "unsupported" },
1559     { offsetof(TCCState, warn_write_strings), 0, "write-strings" },
1560     { offsetof(TCCState, warn_error), 0, "error" },
1561     { offsetof(TCCState, warn_implicit_function_declaration), WD_ALL,
1562       "implicit-function-declaration" },
1563     { 0, 0, NULL }
1564 };
1565
1566 static const FlagDef options_f[] = {
1567     { offsetof(TCCState, char_is_unsigned), 0, "unsigned-char" },
1568     { offsetof(TCCState, char_is_unsigned), FD_INVERT, "signed-char" },
1569     { offsetof(TCCState, nocommon), FD_INVERT, "common" },
1570     { offsetof(TCCState, leading_underscore), 0, "leading-underscore" },
1571     { offsetof(TCCState, ms_extensions), 0, "ms-extensions" },
1572     { offsetof(TCCState, old_struct_init_code), 0, "old-struct-init-code" },
1573     { offsetof(TCCState, dollars_in_identifiers), 0, "dollars-in-identifiers" },
1574     { 0, 0, NULL }
1575 };
1576
1577 static const FlagDef options_m[] = {
1578     { offsetof(TCCState, ms_bitfields), 0, "ms-bitfields" },
1579 #ifdef TCC_TARGET_X86_64
1580     { offsetof(TCCState, nosse), FD_INVERT, "sse" },
1581 #endif
1582     { 0, 0, NULL }
1583 };
1584
1585 static void parse_option_D(TCCState *s1, const char *optarg)
1586 {
1587     char *sym = tcc_strdup(optarg);
1588     char *value = strchr(sym, '=');
1589     if (value)
1590         *value++ = '\0';
1591     tcc_define_symbol(s1, sym, value);
1592     tcc_free(sym);
1593 }
1594
1595 static void args_parser_add_file(TCCState *s, const char* filename, int filetype)
1596 {
1597     struct filespec *f = tcc_malloc(sizeof *f + strlen(filename));
1598     f->type = filetype;
1599     strcpy(f->name, filename);
1600     dynarray_add(&s->files, &s->nb_files, f);
1601 }
1602
1603 /* read list file */
1604 static void args_parser_listfile(TCCState *s, const char *filename)
1605 {
1606     int fd;
1607     size_t len;
1608     char *p;
1609
1610     fd = open(filename, O_RDONLY | O_BINARY);
1611     if (fd < 0)
1612         tcc_error("file '%s' not found", filename);
1613
1614     len = lseek(fd, 0, SEEK_END);
1615     p = tcc_malloc(len + 1), p[len] = 0;
1616     lseek(fd, 0, SEEK_SET), read(fd, p, len), close(fd);
1617     tcc_set_options(s, p);
1618     tcc_free(p);
1619 }
1620
1621 PUB_FUNC int tcc_parse_args(TCCState *s, int argc, char **argv)
1622 {
1623     const TCCOption *popt;
1624     const char *optarg, *r;
1625     const char *run = NULL;
1626     int optind = 0;
1627     int x;
1628     int last_o = -1;
1629     CString linker_arg; /* collect -Wl options */
1630     char buf[1024];
1631
1632     cstr_new(&linker_arg);
1633
1634     while (optind < argc) {
1635
1636         r = argv[optind++];
1637
1638 reparse:
1639         if (r[0] == '@' && r[1] != '\0') {
1640             args_parser_listfile(s, r + 1);
1641             continue;
1642         }
1643
1644         if (r[0] != '-' || r[1] == '\0') {
1645             if (r[0] != '@') /* allow "tcc file(s) -run @ args ..." */
1646                 args_parser_add_file(s, r, s->filetype);
1647             if (run) {
1648                 tcc_set_options(s, run);
1649                 optind--;
1650                 /* argv[0] will be this file */
1651                 break;
1652             }
1653             continue;
1654         }
1655
1656         /* find option in table */
1657         for(popt = tcc_options; ; ++popt) {
1658             const char *p1 = popt->name;
1659             const char *r1 = r + 1;
1660             if (p1 == NULL)
1661                 tcc_error("invalid option -- '%s'", r);
1662             if (!strstart(p1, &r1))
1663                 continue;
1664             optarg = r1;
1665             if (popt->flags & TCC_OPTION_HAS_ARG) {
1666                 if (*r1 == '\0' && !(popt->flags & TCC_OPTION_NOSEP)) {
1667                     if (optind >= argc)
1668                 arg_err:
1669                         tcc_error("argument to '%s' is missing", r);
1670                     optarg = argv[optind++];
1671                 }
1672             } else if (*r1 != '\0')
1673                 continue;
1674             break;
1675         }
1676
1677         switch(popt->index) {
1678         case TCC_OPTION_HELP:
1679             return 0;
1680         case TCC_OPTION_I:
1681             tcc_add_include_path(s, optarg);
1682             break;
1683         case TCC_OPTION_D:
1684             parse_option_D(s, optarg);
1685             break;
1686         case TCC_OPTION_U:
1687             tcc_undefine_symbol(s, optarg);
1688             break;
1689         case TCC_OPTION_L:
1690             tcc_add_library_path(s, optarg);
1691             break;
1692         case TCC_OPTION_B:
1693             /* set tcc utilities path (mainly for tcc development) */
1694             tcc_set_lib_path(s, optarg);
1695             break;
1696         case TCC_OPTION_l:
1697             args_parser_add_file(s, optarg, AFF_TYPE_LIBWH - s->alacarte_link);
1698             s->nb_libraries++;
1699             break;
1700         case TCC_OPTION_pthread:
1701             parse_option_D(s, "_REENTRANT");
1702             s->option_pthread = 1;
1703             break;
1704         case TCC_OPTION_bench:
1705             s->do_bench = 1;
1706             break;
1707 #ifdef CONFIG_TCC_BACKTRACE
1708         case TCC_OPTION_bt:
1709             tcc_set_num_callers(atoi(optarg));
1710             break;
1711 #endif
1712 #ifdef CONFIG_TCC_BCHECK
1713         case TCC_OPTION_b:
1714             s->do_bounds_check = 1;
1715             s->do_debug = 1;
1716             break;
1717 #endif
1718         case TCC_OPTION_g:
1719             s->do_debug = 1;
1720             break;
1721         case TCC_OPTION_c:
1722             x = TCC_OUTPUT_OBJ;
1723         set_output_type:
1724             if (s->output_type)
1725                 tcc_warning("-%s: overriding compiler action already specified", popt->name);
1726             s->output_type = x;
1727             break;
1728         case TCC_OPTION_d:
1729             if (*optarg == 'D')
1730                 s->dflag = 3;
1731             else if (*optarg == 'M')
1732                 s->dflag = 7;
1733             else
1734                 goto unsupported_option;
1735             break;
1736         case TCC_OPTION_static:
1737             s->static_link = 1;
1738             break;
1739         case TCC_OPTION_std:
1740             /* silently ignore, a current purpose:
1741                allow to use a tcc as a reference compiler for "make test" */
1742             break;
1743         case TCC_OPTION_shared:
1744             x = TCC_OUTPUT_DLL;
1745             goto set_output_type;
1746         case TCC_OPTION_soname:
1747             s->soname = tcc_strdup(optarg);
1748             break;
1749         case TCC_OPTION_o:
1750             if (s->outfile) {
1751                 tcc_warning("multiple -o option");
1752                 tcc_free(s->outfile);
1753             }
1754             s->outfile = tcc_strdup(optarg);
1755             break;
1756         case TCC_OPTION_r:
1757             /* generate a .o merging several output files */
1758             s->option_r = 1;
1759             x = TCC_OUTPUT_OBJ;
1760             goto set_output_type;
1761         case TCC_OPTION_isystem:
1762             tcc_add_sysinclude_path(s, optarg);
1763             break;
1764         case TCC_OPTION_iwithprefix:
1765             snprintf(buf, sizeof buf, "{B}/%s", optarg);
1766             tcc_add_sysinclude_path(s, buf);
1767             break;
1768         case TCC_OPTION_include:
1769             dynarray_add(&s->cmd_include_files,
1770                          &s->nb_cmd_include_files, tcc_strdup(optarg));
1771             break;
1772         case TCC_OPTION_nostdinc:
1773             s->nostdinc = 1;
1774             break;
1775         case TCC_OPTION_nostdlib:
1776             s->nostdlib = 1;
1777             break;
1778         case TCC_OPTION_print_search_dirs:
1779             s->print_search_dirs = 1;
1780             break;
1781         case TCC_OPTION_run:
1782 #ifndef TCC_IS_NATIVE
1783             tcc_error("-run is not available in a cross compiler");
1784 #endif
1785             run = optarg;
1786             x = TCC_OUTPUT_MEMORY;
1787             goto set_output_type;
1788         case TCC_OPTION_v:
1789             do ++s->verbose; while (*optarg++ == 'v');
1790             break;
1791         case TCC_OPTION_f:
1792             if (set_flag(s, options_f, optarg) < 0)
1793                 goto unsupported_option;
1794             break;
1795 #ifdef TCC_TARGET_ARM
1796         case TCC_OPTION_mfloat_abi:
1797             /* tcc doesn't support soft float yet */
1798             if (!strcmp(optarg, "softfp")) {
1799                 s->float_abi = ARM_SOFTFP_FLOAT;
1800                 tcc_undefine_symbol(s, "__ARM_PCS_VFP");
1801             } else if (!strcmp(optarg, "hard"))
1802                 s->float_abi = ARM_HARD_FLOAT;
1803             else
1804                 tcc_error("unsupported float abi '%s'", optarg);
1805             break;
1806 #endif
1807         case TCC_OPTION_m:
1808             if (set_flag(s, options_m, optarg) == 0)
1809                 break;
1810             else if (x = atoi(optarg), x == 32 || x == 64)
1811                 s->cross_target = x;
1812             else
1813                 goto unsupported_option;
1814             break;
1815         case TCC_OPTION_W:
1816             if (set_flag(s, options_W, optarg) < 0)
1817                 goto unsupported_option;
1818             break;
1819         case TCC_OPTION_w:
1820             s->warn_none = 1;
1821             break;
1822         case TCC_OPTION_rdynamic:
1823             s->rdynamic = 1;
1824             break;
1825         case TCC_OPTION_Wl:
1826             if (linker_arg.size)
1827                 --linker_arg.size, cstr_ccat(&linker_arg, ',');
1828             cstr_cat(&linker_arg, optarg, 0);
1829             if (tcc_set_linker(s, linker_arg.data))
1830                 cstr_free(&linker_arg);
1831             break;
1832         case TCC_OPTION_Wp:
1833             r = optarg;
1834             goto reparse;
1835         case TCC_OPTION_E:
1836             x = TCC_OUTPUT_PREPROCESS;
1837             goto set_output_type;
1838         case TCC_OPTION_P:
1839             s->Pflag = atoi(optarg) + 1;
1840             break;
1841         case TCC_OPTION_MD:
1842             s->gen_deps = 1;
1843             break;
1844         case TCC_OPTION_MF:
1845             s->deps_outfile = tcc_strdup(optarg);
1846             break;
1847         case TCC_OPTION_dumpversion:
1848             printf ("%s\n", TCC_VERSION);
1849             exit(0);
1850             break;
1851         case TCC_OPTION_x:
1852             if (*optarg == 'c')
1853                 s->filetype = AFF_TYPE_C;
1854             else if (*optarg == 'a')
1855                 s->filetype = AFF_TYPE_ASMPP;
1856             else if (*optarg == 'n')
1857                 s->filetype = AFF_TYPE_NONE;
1858             else
1859                 tcc_warning("unsupported language '%s'", optarg);
1860             break;
1861         case TCC_OPTION_O:
1862             last_o = atoi(optarg);
1863             break;
1864         case TCC_OPTION_traditional:
1865         case TCC_OPTION_pedantic:
1866         case TCC_OPTION_pipe:
1867         case TCC_OPTION_s:
1868             /* ignored */
1869             break;
1870         default:
1871 unsupported_option:
1872             if (s->warn_unsupported)
1873                 tcc_warning("unsupported option '%s'", r);
1874             break;
1875         }
1876     }
1877
1878     if (last_o > 0)
1879         tcc_define_symbol(s, "__OPTIMIZE__", NULL);
1880
1881     if (linker_arg.size) {
1882         r = linker_arg.data;
1883         goto arg_err;
1884     }
1885
1886     return optind;
1887 }
1888
1889 LIBTCCAPI int tcc_set_options(TCCState *s, const char *r)
1890 {
1891     char **argv;
1892     int argc;
1893     int ret, q, c;
1894     CString str;
1895
1896     argc = 0, argv = NULL;
1897     for(;;) {
1898         while (c = (unsigned char)*r, c && c <= ' ')
1899             ++r;
1900         if (c == 0)
1901             break;
1902         q = 0;
1903         cstr_new(&str);
1904         while (c = (unsigned char)*r, c) {
1905             ++r;
1906             if (c == '\\' && (*r == '"' || *r == '\\')) {
1907                 c = *r++;
1908             } else if (c == '"') {
1909                 q = !q;
1910                 continue;
1911             } else if (q == 0 && c <= ' ') {
1912                 break;
1913             }
1914             cstr_ccat(&str, c);
1915         }
1916         cstr_ccat(&str, 0);
1917         //printf("<%s>\n", str.data), fflush(stdout);
1918         dynarray_add(&argv, &argc, tcc_strdup(str.data));
1919         cstr_free(&str);
1920     }
1921     ret = tcc_parse_args(s, argc, argv);
1922     dynarray_reset(&argv, &argc);
1923     return ret;
1924 }
1925
1926 PUB_FUNC void tcc_print_stats(TCCState *s, unsigned total_time)
1927 {
1928     if (total_time < 1)
1929         total_time = 1;
1930     if (total_bytes < 1)
1931         total_bytes = 1;
1932     fprintf(stderr, "%d idents, %d lines, %d bytes, %0.3f s, %u lines/s, %0.1f MB/s\n",
1933            tok_ident - TOK_IDENT, total_lines, total_bytes,
1934            (double)total_time/1000,
1935            (unsigned)total_lines*1000/total_time,
1936            (double)total_bytes/1000/total_time);
1937 }
1938
1939 PUB_FUNC void tcc_set_environment(TCCState *s)
1940 {
1941     char * path;
1942
1943     path = getenv("C_INCLUDE_PATH");
1944     if(path != NULL) {
1945         tcc_add_include_path(s, path);
1946     }
1947     path = getenv("CPATH");
1948     if(path != NULL) {
1949         tcc_add_include_path(s, path);
1950     }
1951     path = getenv("LIBRARY_PATH");
1952     if(path != NULL) {
1953         tcc_add_library_path(s, path);
1954     }
1955 }