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 #if !defined ONE_SOURCE || ONE_SOURCE
  22 #include "tccpp.c"
  23 #include "tccgen.c"
  24 #include "tccdbg.c"
  25 #include "tccasm.c"
  26 #include "tccelf.c"
  27 #include "tccrun.c"
  28 #ifdef TCC_TARGET_I386
  29 #include "i386-gen.c"
  30 #include "i386-link.c"
  31 #include "i386-asm.c"
  32 #elif defined(TCC_TARGET_ARM)
  33 #include "arm-gen.c"
  34 #include "arm-link.c"
  35 #include "arm-asm.c"
  36 #elif defined(TCC_TARGET_ARM64)
  37 #include "arm64-gen.c"
  38 #include "arm64-link.c"
  39 #include "arm-asm.c"
  40 #elif defined(TCC_TARGET_C67)
  41 #include "c67-gen.c"
  42 #include "c67-link.c"
  43 #include "tcccoff.c"
  44 #elif defined(TCC_TARGET_X86_64)
  45 #include "x86_64-gen.c"
  46 #include "x86_64-link.c"
  47 #include "i386-asm.c"
  48 #elif defined(TCC_TARGET_RISCV64)
  49 #include "riscv64-gen.c"
  50 #include "riscv64-link.c"
  51 #include "riscv64-asm.c"
  52 #else
  53 #error unknown target
  54 #endif
  55 #ifdef TCC_TARGET_PE
  56 #include "tccpe.c"
  57 #endif
  58 #ifdef TCC_TARGET_MACHO
  59 #include "tccmacho.c"
  60 #endif
  61 #endif /* ONE_SOURCE */
  62
  63 #include "tcc.h"
  64
  65 /********************************************************/
  66 /* global variables */
  67
  68 /* XXX: get rid of this ASAP (or maybe not) */
  69 ST_DATA struct TCCState *tcc_state;
  70 TCC_SEM(static tcc_compile_sem);
  71 /* an array of pointers to memory to be free'd after errors */
  72 ST_DATA void** stk_data;
  73 ST_DATA int nb_stk_data;
  74
  75 /********************************************************/
  76 #ifdef _WIN32
  77 ST_FUNC char *normalize_slashes(char *path)
  78 {
  79     char *p;
  80     for (p = path; *p; ++p)
  81         if (*p == '\\')
  82             *p = '/';
  83     return path;
  84 }
  85
  86 #if defined LIBTCC_AS_DLL && !defined CONFIG_TCCDIR
  87 static HMODULE tcc_module;
  88 BOOL WINAPI DllMain (HINSTANCE hDll, DWORD dwReason, LPVOID lpReserved)
  89 {
  90     if (DLL_PROCESS_ATTACH == dwReason)
  91         tcc_module = hDll;
  92     return TRUE;
  93 }
  94 #else
  95 #define tcc_module NULL /* NULL means executable itself */
  96 #endif
  97
  98 #ifndef CONFIG_TCCDIR
  99 /* on win32, we suppose the lib and includes are at the location of 'tcc.exe' */
 100 static inline char *config_tccdir_w32(char *path)
 101 {
 102     char temp[1024];
 103     char try[1024];
 104     char *p;
 105     int c;
 106     GetModuleFileName(tcc_module, path, MAX_PATH);
 107     p = tcc_basename(normalize_slashes(strlwr(path)));
 108     if (p > path)
 109         --p;
 110
 111     *p = 0;
 112
 113     /*
 114      * See if we are perhaps in a "bin/" subfolder of the
 115      * installation path, in which case the real root of
 116      * the installation is one level up. We can test this
 117      * by looking for the 'include' folder.
 118      */
 119     strncpy(temp, path, sizeof(temp)-1);
 120     strcat(temp, "/include");
 121
 122     if (_access(temp, 0) != 0) {
 123         /* No 'include' folder found, so go up one level. */
 124         strncpy(temp, path, sizeof(temp)-1);
 125
 126         /* Try this for several "levels" up. */
 127         for (c = 0; c < 4; c++) {
 128                 p = tcc_basename(temp);
 129                 if (p > temp) {
 130                     --p;
 131                     *p = '\0';
 132                 }
 133
 134                 strncpy(try, temp, sizeof(try)-1);
 135                 strcat(try, "/include");
 136
 137                 if (_access(try, 0) == 0) {
 138                         if (p != NULL)
 139                                 p = '\0';
 140                         strcpy(path, temp);
 141                         break;
 142                 }
 143         }
 144     }
 145
 146     return path;
 147 }
 148 #define CONFIG_TCCDIR config_tccdir_w32(alloca(MAX_PATH))
 149 #endif
 150
 151 #ifdef TCC_TARGET_PE
 152 static void tcc_add_systemdir(TCCState *s)
 153 {
 154     char buf[1000];
 155     GetSystemDirectory(buf, sizeof buf);
 156     tcc_add_library_path(s, normalize_slashes(buf));
 157 }
 158 #endif
 159 #endif
 160
 161 /********************************************************/
 162 #if CONFIG_TCC_SEMLOCK
 163 #if defined _WIN32
 164 ST_FUNC void wait_sem(TCCSem *p)
 165 {
 166     if (!p->init)
 167         InitializeCriticalSection(&p->cr), p->init = 1;
 168     EnterCriticalSection(&p->cr);
 169 }
 170 ST_FUNC void post_sem(TCCSem *p)
 171 {
 172     LeaveCriticalSection(&p->cr);
 173 }
 174 #elif defined __APPLE__
 175 /* Half-compatible MacOS doesn't have non-shared (process local)
 176    semaphores.  Use the dispatch framework for lightweight locks.  */
 177 ST_FUNC void wait_sem(TCCSem *p)
 178 {
 179     if (!p->init)
 180         p->sem = dispatch_semaphore_create(1), p->init = 1;
 181     dispatch_semaphore_wait(p->sem, DISPATCH_TIME_FOREVER);
 182 }
 183 ST_FUNC void post_sem(TCCSem *p)
 184 {
 185     dispatch_semaphore_signal(p->sem);
 186 }
 187 #else
 188 ST_FUNC void wait_sem(TCCSem *p)
 189 {
 190     if (!p->init)
 191         sem_init(&p->sem, 0, 1), p->init = 1;
 192     while (sem_wait(&p->sem) < 0 && errno == EINTR);
 193 }
 194 ST_FUNC void post_sem(TCCSem *p)
 195 {
 196     sem_post(&p->sem);
 197 }
 198 #endif
 199 #endif
 200
 201 PUB_FUNC void tcc_enter_state(TCCState *s1)
 202 {
 203     if (s1->error_set_jmp_enabled)
 204         return;
 205     WAIT_SEM(&tcc_compile_sem);
 206     tcc_state = s1;
 207 }
 208
 209 PUB_FUNC void tcc_exit_state(TCCState *s1)
 210 {
 211     if (s1->error_set_jmp_enabled)
 212         return;
 213     tcc_state = NULL;
 214     POST_SEM(&tcc_compile_sem);
 215 }
 216
 217 /********************************************************/
 218 /* copy a string and truncate it. */
 219 ST_FUNC char *pstrcpy(char *buf, size_t buf_size, const char *s)
 220 {
 221     char *q, *q_end;
 222     int c;
 223
 224     if (buf_size > 0) {
 225         q = buf;
 226         q_end = buf + buf_size - 1;
 227         while (q < q_end) {
 228             c = *s++;
 229             if (c == '\0')
 230                 break;
 231             *q++ = c;
 232         }
 233         *q = '\0';
 234     }
 235     return buf;
 236 }
 237
 238 /* strcat and truncate. */
 239 ST_FUNC char *pstrcat(char *buf, size_t buf_size, const char *s)
 240 {
 241     size_t len;
 242     len = strlen(buf);
 243     if (len < buf_size)
 244         pstrcpy(buf + len, buf_size - len, s);
 245     return buf;
 246 }
 247
 248 ST_FUNC char *pstrncpy(char *out, const char *in, size_t num)
 249 {
 250     memcpy(out, in, num);
 251     out[num] = '\0';
 252     return out;
 253 }
 254
 255 /* extract the basename of a file */
 256 PUB_FUNC char *tcc_basename(const char *name)
 257 {
 258     char *p = strchr(name, 0);
 259     while (p > name && !IS_DIRSEP(p[-1]))
 260         --p;
 261     return p;
 262 }
 263
 264 /* extract extension part of a file
 265  *
 266  * (if no extension, return pointer to end-of-string)
 267  */
 268 PUB_FUNC char *tcc_fileextension (const char *name)
 269 {
 270     char *b = tcc_basename(name);
 271     char *e = strrchr(b, '.');
 272     return e ? e : strchr(b, 0);
 273 }
 274
 275 ST_FUNC char *tcc_load_text(int fd)
 276 {
 277     int len = lseek(fd, 0, SEEK_END);
 278     char *buf = load_data(fd, 0, len + 1);
 279     buf[len] = 0;
 280     return buf;
 281 }
 282
 283 /********************************************************/
 284 /* memory management */
 285
 286 #undef free
 287 #undef malloc
 288 #undef realloc
 289
 290 void mem_error(const char *msg)
 291 {
 292     fprintf(stderr, "%s\n", msg);
 293     exit (1);
 294 }
 295
 296 #ifndef MEM_DEBUG
 297
 298 PUB_FUNC void tcc_free(void *ptr)
 299 {
 300     free(ptr);
 301 }
 302
 303 PUB_FUNC void *tcc_malloc(unsigned long size)
 304 {
 305     void *ptr;
 306     ptr = malloc(size);
 307     if (!ptr && size)
 308         mem_error("memory full (malloc)");
 309     return ptr;
 310 }
 311
 312 PUB_FUNC void *tcc_mallocz(unsigned long size)
 313 {
 314     void *ptr;
 315     ptr = tcc_malloc(size);
 316     if (size)
 317         memset(ptr, 0, size);
 318     return ptr;
 319 }
 320
 321 PUB_FUNC void *tcc_realloc(void *ptr, unsigned long size)
 322 {
 323     void *ptr1;
 324     ptr1 = realloc(ptr, size);
 325     if (!ptr1 && size)
 326         mem_error("memory full (realloc)");
 327     return ptr1;
 328 }
 329
 330 PUB_FUNC char *tcc_strdup(const char *str)
 331 {
 332     char *ptr;
 333     ptr = tcc_malloc(strlen(str) + 1);
 334     strcpy(ptr, str);
 335     return ptr;
 336 }
 337
 338 #else
 339
 340 #define MEM_DEBUG_MAGIC1 0xFEEDDEB1
 341 #define MEM_DEBUG_MAGIC2 0xFEEDDEB2
 342 #define MEM_DEBUG_MAGIC3 0xFEEDDEB3
 343 #define MEM_DEBUG_FILE_LEN 40
 344 #define MEM_DEBUG_CHECK3(header) \
 345     ((mem_debug_header_t*)((char*)header + header->size))->magic3
 346 #define MEM_USER_PTR(header) \
 347     ((char *)header + offsetof(mem_debug_header_t, magic3))
 348 #define MEM_HEADER_PTR(ptr) \
 349     (mem_debug_header_t *)((char*)ptr - offsetof(mem_debug_header_t, magic3))
 350
 351 struct mem_debug_header {
 352     unsigned magic1;
 353     unsigned size;
 354     struct mem_debug_header *prev;
 355     struct mem_debug_header *next;
 356     int line_num;
 357     char file_name[MEM_DEBUG_FILE_LEN + 1];
 358     unsigned magic2;
 359     ALIGNED(16) unsigned char magic3[4];
 360 };
 361
 362 typedef struct mem_debug_header mem_debug_header_t;
 363
 364 TCC_SEM(static mem_sem);
 365 static mem_debug_header_t *mem_debug_chain;
 366 static unsigned mem_cur_size;
 367 static unsigned mem_max_size;
 368 static int nb_states;
 369
 370 static mem_debug_header_t *malloc_check(void *ptr, const char *msg)
 371 {
 372     mem_debug_header_t * header = MEM_HEADER_PTR(ptr);
 373     if (header->magic1 != MEM_DEBUG_MAGIC1 ||
 374         header->magic2 != MEM_DEBUG_MAGIC2 ||
 375         read32le(MEM_DEBUG_CHECK3(header)) != MEM_DEBUG_MAGIC3 ||
 376         header->size == (unsigned)-1) {
 377         fprintf(stderr, "%s check failed\n", msg);
 378         if (header->magic1 == MEM_DEBUG_MAGIC1)
 379             fprintf(stderr, "%s:%u: block allocated here.\n",
 380                 header->file_name, header->line_num);
 381         exit(1);
 382     }
 383     return header;
 384 }
 385
 386 PUB_FUNC void *tcc_malloc_debug(unsigned long size, const char *file, int line)
 387 {
 388     int ofs;
 389     mem_debug_header_t *header;
 390
 391     header = malloc(sizeof(mem_debug_header_t) + size);
 392     if (!header)
 393         mem_error("memory full (malloc)");
 394
 395     header->magic1 = MEM_DEBUG_MAGIC1;
 396     header->magic2 = MEM_DEBUG_MAGIC2;
 397     header->size = size;
 398     write32le(MEM_DEBUG_CHECK3(header), MEM_DEBUG_MAGIC3);
 399     header->line_num = line;
 400     ofs = strlen(file) - MEM_DEBUG_FILE_LEN;
 401     strncpy(header->file_name, file + (ofs > 0 ? ofs : 0), MEM_DEBUG_FILE_LEN);
 402     header->file_name[MEM_DEBUG_FILE_LEN] = 0;
 403
 404     WAIT_SEM(&mem_sem);
 405     header->next = mem_debug_chain;
 406     header->prev = NULL;
 407     if (header->next)
 408         header->next->prev = header;
 409     mem_debug_chain = header;
 410     mem_cur_size += size;
 411     if (mem_cur_size > mem_max_size)
 412         mem_max_size = mem_cur_size;
 413     POST_SEM(&mem_sem);
 414
 415     return MEM_USER_PTR(header);
 416 }
 417
 418 PUB_FUNC void tcc_free_debug(void *ptr)
 419 {
 420     mem_debug_header_t *header;
 421     if (!ptr)
 422         return;
 423     header = malloc_check(ptr, "tcc_free");
 424
 425     WAIT_SEM(&mem_sem);
 426     mem_cur_size -= header->size;
 427     header->size = (unsigned)-1;
 428     if (header->next)
 429         header->next->prev = header->prev;
 430     if (header->prev)
 431         header->prev->next = header->next;
 432     if (header == mem_debug_chain)
 433         mem_debug_chain = header->next;
 434     POST_SEM(&mem_sem);
 435     free(header);
 436 }
 437
 438 PUB_FUNC void *tcc_mallocz_debug(unsigned long size, const char *file, int line)
 439 {
 440     void *ptr;
 441     ptr = tcc_malloc_debug(size,file,line);
 442     memset(ptr, 0, size);
 443     return ptr;
 444 }
 445
 446 PUB_FUNC void *tcc_realloc_debug(void *ptr, unsigned long size, const char *file, int line)
 447 {
 448     mem_debug_header_t *header;
 449     int mem_debug_chain_update = 0;
 450     if (!ptr)
 451         return tcc_malloc_debug(size, file, line);
 452     header = malloc_check(ptr, "tcc_realloc");
 453
 454     WAIT_SEM(&mem_sem);
 455     mem_cur_size -= header->size;
 456     mem_debug_chain_update = (header == mem_debug_chain);
 457     header = realloc(header, sizeof(mem_debug_header_t) + size);
 458     if (!header)
 459         mem_error("memory full (realloc)");
 460     header->size = size;
 461     write32le(MEM_DEBUG_CHECK3(header), MEM_DEBUG_MAGIC3);
 462     if (header->next)
 463         header->next->prev = header;
 464     if (header->prev)
 465         header->prev->next = header;
 466     if (mem_debug_chain_update)
 467         mem_debug_chain = header;
 468     mem_cur_size += size;
 469     if (mem_cur_size > mem_max_size)
 470         mem_max_size = mem_cur_size;
 471     POST_SEM(&mem_sem);
 472
 473     return MEM_USER_PTR(header);
 474 }
 475
 476 PUB_FUNC char *tcc_strdup_debug(const char *str, const char *file, int line)
 477 {
 478     char *ptr;
 479     ptr = tcc_malloc_debug(strlen(str) + 1, file, line);
 480     strcpy(ptr, str);
 481     return ptr;
 482 }
 483
 484 PUB_FUNC void tcc_memcheck(int d)
 485 {
 486     WAIT_SEM(&mem_sem);
 487     nb_states += d;
 488     if (0 == nb_states && mem_cur_size) {
 489         mem_debug_header_t *header = mem_debug_chain;
 490         fflush(stdout);
 491         fprintf(stderr, "MEM_DEBUG: mem_leak= %d bytes, mem_max_size= %d bytes\n",
 492             mem_cur_size, mem_max_size);
 493         while (header) {
 494             fprintf(stderr, "%s:%u: error: %u bytes leaked\n",
 495                 header->file_name, header->line_num, header->size);
 496             header = header->next;
 497         }
 498         fflush(stderr);
 499         mem_cur_size = 0;
 500         mem_debug_chain = NULL;
 501 #if MEM_DEBUG-0 == 2
 502         exit(2);
 503 #endif
 504     }
 505     POST_SEM(&mem_sem);
 506 }
 507 #endif /* MEM_DEBUG */
 508
 509 #define free(p) use_tcc_free(p)
 510 #define malloc(s) use_tcc_malloc(s)
 511 #define realloc(p, s) use_tcc_realloc(p, s)
 512
 513 /********************************************************/
 514 /* dynarrays */
 515
 516 ST_FUNC void dynarray_add(void *ptab, int *nb_ptr, void *data)
 517 {
 518     int nb, nb_alloc;
 519     void **pp;
 520
 521     nb = *nb_ptr;
 522     pp = *(void ***)ptab;
 523     /* every power of two we double array size */
 524     if ((nb & (nb - 1)) == 0) {
 525         if (!nb)
 526             nb_alloc = 1;
 527         else
 528             nb_alloc = nb * 2;
 529         pp = tcc_realloc(pp, nb_alloc * sizeof(void *));
 530         *(void***)ptab = pp;
 531     }
 532     pp[nb++] = data;
 533     *nb_ptr = nb;
 534 }
 535
 536 ST_FUNC void dynarray_reset(void *pp, int *n)
 537 {
 538     void **p;
 539     for (p = *(void***)pp; *n; ++p, --*n)
 540         if (*p)
 541             tcc_free(*p);
 542     tcc_free(*(void**)pp);
 543     *(void**)pp = NULL;
 544 }
 545
 546 static void tcc_split_path(TCCState *s, void *p_ary, int *p_nb_ary, const char *in)
 547 {
 548     const char *p;
 549     do {
 550         int c;
 551         CString str;
 552
 553         cstr_new(&str);
 554         for (p = in; c = *p, c != '\0' && c != PATHSEP[0]; ++p) {
 555             if (c == '{' && p[1] && p[2] == '}') {
 556                 c = p[1], p += 2;
 557                 if (c == 'B')
 558                     cstr_cat(&str, s->tcc_lib_path, -1);
 559                 if (c == 'R')
 560                     cstr_cat(&str, CONFIG_SYSROOT, -1);
 561                 if (c == 'f' && file) {
 562                     /* substitute current file's dir */
 563                     const char *f = file->true_filename;
 564                     const char *b = tcc_basename(f);
 565                     if (b > f)
 566                         cstr_cat(&str, f, b - f - 1);
 567                     else
 568                         cstr_cat(&str, ".", 1);
 569                 }
 570             } else {
 571                 cstr_ccat(&str, c);
 572             }
 573         }
 574         if (str.size) {
 575             cstr_ccat(&str, '\0');
 576             dynarray_add(p_ary, p_nb_ary, tcc_strdup(str.data));
 577         }
 578         cstr_free(&str);
 579         in = p+1;
 580     } while (*p);
 581 }
 582
 583 /********************************************************/
 584 /* warning / error */
 585
 586 /* warn_... option bits */
 587 #define WARN_ON  1 /* warning is on (-Woption) */
 588 #define WARN_ERR 2 /* warning is an error (-Werror=option) */
 589 #define WARN_NOE 4 /* warning is not an error (-Wno-error=option) */
 590
 591 /* error1() modes */
 592 enum { ERROR_WARN, ERROR_NOABORT, ERROR_ERROR };
 593
 594 static void error1(int mode, const char *fmt, va_list ap)
 595 {
 596     BufferedFile **pf, *f;
 597     TCCState *s1 = tcc_state;
 598     CString cs;
 599
 600     tcc_exit_state(s1);
 601
 602     if (mode == ERROR_WARN) {
 603         if (s1->warn_error)
 604             mode = ERROR_ERROR;
 605         if (s1->warn_num) {
 606             /* handle tcc_warning_c(warn_option)(fmt, ...) */
 607             int wopt = *(&s1->warn_none + s1->warn_num);
 608             s1->warn_num = 0;
 609             if (0 == (wopt & WARN_ON))
 610                 return;
 611             if (wopt & WARN_ERR)
 612                 mode = ERROR_ERROR;
 613             if (wopt & WARN_NOE)
 614                 mode = ERROR_WARN;
 615         }
 616         if (s1->warn_none)
 617             return;
 618     }
 619
 620     cstr_new(&cs);
 621     f = NULL;
 622     if (s1->error_set_jmp_enabled) { /* we're called while parsing a file */
 623         /* use upper file if inline ":asm:" or token ":paste:" */
 624         for (f = file; f && f->filename[0] == ':'; f = f->prev)
 625             ;
 626     }
 627     if (f) {
 628         for(pf = s1->include_stack; pf < s1->include_stack_ptr; pf++)
 629             cstr_printf(&cs, "In file included from %s:%d:\n",
 630                 (*pf)->filename, (*pf)->line_num - 1);
 631         cstr_printf(&cs, "%s:%d: ",
 632             f->filename, f->line_num - !!(tok_flags & TOK_FLAG_BOL));
 633     } else if (s1->current_filename) {
 634         cstr_printf(&cs, "%s: ", s1->current_filename);
 635     }
 636     if (0 == cs.size)
 637         cstr_printf(&cs, "tcc: ");
 638     cstr_printf(&cs, mode == ERROR_WARN ? "warning: " : "error: ");
 639     cstr_vprintf(&cs, fmt, ap);
 640     if (!s1 || !s1->error_func) {
 641         /* default case: stderr */
 642         if (s1 && s1->output_type == TCC_OUTPUT_PREPROCESS && s1->ppfp == stdout)
 643             printf("\n"); /* print a newline during tcc -E */
 644         fflush(stdout); /* flush -v output */
 645         fprintf(stderr, "%s\n", (char*)cs.data);
 646         fflush(stderr); /* print error/warning now (win32) */
 647     } else {
 648         s1->error_func(s1->error_opaque, (char*)cs.data);
 649     }
 650     cstr_free(&cs);
 651     if (mode != ERROR_WARN)
 652         s1->nb_errors++;
 653     if (mode == ERROR_ERROR && s1->error_set_jmp_enabled) {
 654         while (nb_stk_data)
 655             tcc_free(*(void**)stk_data[--nb_stk_data]);
 656         longjmp(s1->error_jmp_buf, 1);
 657     }
 658 }
 659
 660 LIBTCCAPI void tcc_set_error_func(TCCState *s, void *error_opaque, TCCErrorFunc error_func)
 661 {
 662     s->error_opaque = error_opaque;
 663     s->error_func = error_func;
 664 }
 665
 666 LIBTCCAPI TCCErrorFunc tcc_get_error_func(TCCState *s)
 667 {
 668     return s->error_func;
 669 }
 670
 671 LIBTCCAPI void *tcc_get_error_opaque(TCCState *s)
 672 {
 673     return s->error_opaque;
 674 }
 675
 676 /* error without aborting current compilation */
 677 PUB_FUNC int _tcc_error_noabort(const char *fmt, ...)
 678 {
 679     va_list ap;
 680     va_start(ap, fmt);
 681     error1(ERROR_NOABORT, fmt, ap);
 682     va_end(ap);
 683     return -1;
 684 }
 685
 686 #undef _tcc_error
 687 PUB_FUNC void _tcc_error(const char *fmt, ...)
 688 {
 689     va_list ap;
 690     va_start(ap, fmt);
 691     error1(ERROR_ERROR, fmt, ap);
 692     exit(1);
 693 }
 694 #define _tcc_error use_tcc_error_noabort
 695
 696 PUB_FUNC void _tcc_warning(const char *fmt, ...)
 697 {
 698     va_list ap;
 699     va_start(ap, fmt);
 700     error1(ERROR_WARN, fmt, ap);
 701     va_end(ap);
 702 }
 703
 704
 705 /********************************************************/
 706 /* I/O layer */
 707
 708 ST_FUNC void tcc_open_bf(TCCState *s1, const char *filename, int initlen)
 709 {
 710     BufferedFile *bf;
 711     int buflen = initlen ? initlen : IO_BUF_SIZE;
 712
 713     bf = tcc_mallocz(sizeof(BufferedFile) + buflen);
 714     bf->buf_ptr = bf->buffer;
 715     bf->buf_end = bf->buffer + initlen;
 716     bf->buf_end[0] = CH_EOB; /* put eob symbol */
 717     pstrcpy(bf->filename, sizeof(bf->filename), filename);
 718 #ifdef _WIN32
 719     normalize_slashes(bf->filename);
 720 #endif
 721     bf->true_filename = bf->filename;
 722     bf->line_num = 1;
 723     bf->ifdef_stack_ptr = s1->ifdef_stack_ptr;
 724     bf->fd = -1;
 725     bf->prev = file;
 726     file = bf;
 727     tok_flags = TOK_FLAG_BOL | TOK_FLAG_BOF;
 728 }
 729
 730 ST_FUNC void tcc_close(void)
 731 {
 732     TCCState *s1 = tcc_state;
 733     BufferedFile *bf = file;
 734     if (bf->fd > 0) {
 735         close(bf->fd);
 736         total_lines += bf->line_num - 1;
 737     }
 738     if (bf->true_filename != bf->filename)
 739         tcc_free(bf->true_filename);
 740     file = bf->prev;
 741     tcc_free(bf);
 742 }
 743
 744 static int _tcc_open(TCCState *s1, const char *filename)
 745 {
 746     int fd;
 747     if (strcmp(filename, "-") == 0)
 748         fd = 0, filename = "<stdin>";
 749     else
 750         fd = open(filename, O_RDONLY | O_BINARY);
 751     if ((s1->verbose == 2 && fd >= 0) || s1->verbose == 3)
 752         printf("%s %*s%s\n", fd < 0 ? "nf":"->",
 753                (int)(s1->include_stack_ptr - s1->include_stack), "", filename);
 754     return fd;
 755 }
 756
 757 ST_FUNC int tcc_open(TCCState *s1, const char *filename)
 758 {
 759     int fd = _tcc_open(s1, filename);
 760     if (fd < 0)
 761         return -1;
 762     tcc_open_bf(s1, filename, 0);
 763     file->fd = fd;
 764     return 0;
 765 }
 766
 767 /* compile the file opened in 'file'. Return non zero if errors. */
 768 static int tcc_compile(TCCState *s1, int filetype, const char *str, int fd)
 769 {
 770     /* Here we enter the code section where we use the global variables for
 771        parsing and code generation (tccpp.c, tccgen.c, <target>-gen.c).
 772        Other threads need to wait until we're done.
 773
 774        Alternatively we could use thread local storage for those global
 775        variables, which may or may not have advantages */
 776
 777     tcc_enter_state(s1);
 778     s1->error_set_jmp_enabled = 1;
 779
 780     if (setjmp(s1->error_jmp_buf) == 0) {
 781         s1->nb_errors = 0;
 782
 783         if (fd == -1) {
 784             int len = strlen(str);
 785             tcc_open_bf(s1, "<string>", len);
 786             memcpy(file->buffer, str, len);
 787         } else {
 788             tcc_open_bf(s1, str, 0);
 789             file->fd = fd;
 790         }
 791
 792         preprocess_start(s1, filetype);
 793         tccgen_init(s1);
 794
 795         if (s1->output_type == TCC_OUTPUT_PREPROCESS) {
 796             tcc_preprocess(s1);
 797         } else {
 798             tccelf_begin_file(s1);
 799             if (filetype & (AFF_TYPE_ASM | AFF_TYPE_ASMPP)) {
 800                 tcc_assemble(s1, !!(filetype & AFF_TYPE_ASMPP));
 801             } else {
 802                 tccgen_compile(s1);
 803             }
 804             tccelf_end_file(s1);
 805         }
 806     }
 807     tccgen_finish(s1);
 808     preprocess_end(s1);
 809     s1->error_set_jmp_enabled = 0;
 810     tcc_exit_state(s1);
 811     return s1->nb_errors != 0 ? -1 : 0;
 812 }
 813
 814 LIBTCCAPI int tcc_compile_string(TCCState *s, const char *str)
 815 {
 816     return tcc_compile(s, s->filetype, str, -1);
 817 }
 818
 819 /* define a preprocessor symbol. value can be NULL, sym can be "sym=val" */
 820 LIBTCCAPI void tcc_define_symbol(TCCState *s1, const char *sym, const char *value)
 821 {
 822     const char *eq;
 823     if (NULL == (eq = strchr(sym, '=')))
 824         eq = strchr(sym, 0);
 825     if (NULL == value)
 826         value = *eq ? eq + 1 : "1";
 827     cstr_printf(&s1->cmdline_defs, "#define %.*s %s\n", (int)(eq-sym), sym, value);
 828 }
 829
 830 /* undefine a preprocessor symbol */
 831 LIBTCCAPI void tcc_undefine_symbol(TCCState *s1, const char *sym)
 832 {
 833     cstr_printf(&s1->cmdline_defs, "#undef %s\n", sym);
 834 }
 835
 836
 837 LIBTCCAPI TCCState *tcc_new(void)
 838 {
 839     TCCState *s;
 840
 841     s = tcc_mallocz(sizeof(TCCState));
 842     if (!s)
 843         return NULL;
 844 #ifdef MEM_DEBUG
 845     tcc_memcheck(1);
 846 #endif
 847
 848 #undef gnu_ext
 849
 850     s->gnu_ext = 1;
 851     s->tcc_ext = 1;
 852     s->nocommon = 1;
 853     s->dollars_in_identifiers = 1; /*on by default like in gcc/clang*/
 854     s->cversion = 199901; /* default unless -std=c11 is supplied */
 855     s->warn_implicit_function_declaration = 1;
 856     s->warn_discarded_qualifiers = 1;
 857     s->ms_extensions = 1;
 858
 859 #ifdef CHAR_IS_UNSIGNED
 860     s->char_is_unsigned = 1;
 861 #endif
 862 #ifdef TCC_TARGET_I386
 863     s->seg_size = 32;
 864 #endif
 865     /* enable this if you want symbols with leading underscore on windows: */
 866 #if defined TCC_TARGET_MACHO /* || defined TCC_TARGET_PE */
 867     s->leading_underscore = 1;
 868 #endif
 869 #ifdef TCC_TARGET_ARM
 870     s->float_abi = ARM_FLOAT_ABI;
 871 #endif
 872 #ifdef CONFIG_NEW_DTAGS
 873     s->enable_new_dtags = 1;
 874 #endif
 875     s->ppfp = stdout;
 876     /* might be used in error() before preprocess_start() */
 877     s->include_stack_ptr = s->include_stack;
 878
 879     tcc_set_lib_path(s, CONFIG_TCCDIR);
 880     return s;
 881 }
 882
 883 LIBTCCAPI void tcc_delete(TCCState *s1)
 884 {
 885     /* free sections */
 886     tccelf_delete(s1);
 887
 888     /* free library paths */
 889     dynarray_reset(&s1->library_paths, &s1->nb_library_paths);
 890     dynarray_reset(&s1->crt_paths, &s1->nb_crt_paths);
 891
 892     /* free include paths */
 893     dynarray_reset(&s1->include_paths, &s1->nb_include_paths);
 894     dynarray_reset(&s1->sysinclude_paths, &s1->nb_sysinclude_paths);
 895
 896     tcc_free(s1->tcc_lib_path);
 897     tcc_free(s1->soname);
 898     tcc_free(s1->rpath);
 899     tcc_free(s1->elf_entryname);
 900     tcc_free(s1->init_symbol);
 901     tcc_free(s1->fini_symbol);
 902     tcc_free(s1->mapfile);
 903     tcc_free(s1->outfile);
 904     tcc_free(s1->deps_outfile);
 905 #if defined TCC_TARGET_MACHO
 906     tcc_free(s1->install_name);
 907 #endif
 908     dynarray_reset(&s1->files, &s1->nb_files);
 909     dynarray_reset(&s1->target_deps, &s1->nb_target_deps);
 910     dynarray_reset(&s1->pragma_libs, &s1->nb_pragma_libs);
 911     dynarray_reset(&s1->argv, &s1->argc);
 912     cstr_free(&s1->cmdline_defs);
 913     cstr_free(&s1->cmdline_incl);
 914     cstr_free(&s1->linker_arg);
 915 #ifdef TCC_IS_NATIVE
 916     /* free runtime memory */
 917     tcc_run_free(s1);
 918 #endif
 919     tcc_free(s1->dState);
 920     tcc_free(s1);
 921 #ifdef MEM_DEBUG
 922     tcc_memcheck(-1);
 923 #endif
 924 }
 925
 926 LIBTCCAPI int tcc_set_output_type(TCCState *s, int output_type)
 927 {
 928 #ifdef CONFIG_TCC_PIE
 929     if (output_type == TCC_OUTPUT_EXE)
 930         output_type |= TCC_OUTPUT_DYN;
 931 #endif
 932     s->output_type = output_type;
 933
 934     if (!s->nostdinc) {
 935         /* default include paths */
 936         /* -isystem paths have already been handled */
 937         tcc_add_sysinclude_path(s, CONFIG_TCC_SYSINCLUDEPATHS);
 938     }
 939
 940     if (output_type == TCC_OUTPUT_PREPROCESS) {
 941         s->do_debug = 0;
 942         return 0;
 943     }
 944
 945     tccelf_new(s);
 946     if (s->do_debug) {
 947         /* add debug sections */
 948         tcc_debug_new(s);
 949     }
 950 #ifdef CONFIG_TCC_BCHECK
 951     if (s->do_bounds_check) {
 952         /* if bound checking, then add corresponding sections */
 953         tccelf_bounds_new(s);
 954     }
 955 #endif
 956
 957     if (output_type == TCC_OUTPUT_OBJ) {
 958         /* always elf for objects */
 959         s->output_format = TCC_OUTPUT_FORMAT_ELF;
 960         return 0;
 961     }
 962
 963     tcc_add_library_path(s, CONFIG_TCC_LIBPATHS);
 964
 965 #ifdef TCC_TARGET_PE
 966 # ifdef _WIN32
 967     /* allow linking with system dll's directly */
 968     tcc_add_systemdir(s);
 969 # endif
 970     /* target PE has its own startup code in libtcc1.a */
 971     return 0;
 972
 973 #elif defined TCC_TARGET_MACHO
 974 # ifdef TCC_IS_NATIVE
 975     tcc_add_macos_sdkpath(s);
 976 # endif
 977     /* Mach-O with LC_MAIN doesn't need any crt startup code.  */
 978     return 0;
 979
 980 #else
 981     /* paths for crt objects */
 982     tcc_split_path(s, &s->crt_paths, &s->nb_crt_paths, CONFIG_TCC_CRTPREFIX);
 983
 984     /* add libc crt1/crti objects */
 985     if (output_type != TCC_OUTPUT_MEMORY && !s->nostdlib) {
 986 #if TARGETOS_OpenBSD
 987         if (output_type != TCC_OUTPUT_DLL)
 988             tcc_add_crt(s, "crt0.o");
 989         if (output_type == TCC_OUTPUT_DLL)
 990             tcc_add_crt(s, "crtbeginS.o");
 991         else
 992             tcc_add_crt(s, "crtbegin.o");
 993 #elif TARGETOS_FreeBSD
 994         if (output_type != TCC_OUTPUT_DLL)
 995             tcc_add_crt(s, "crt1.o");
 996         tcc_add_crt(s, "crti.o");
 997         if (s->static_link)
 998             tcc_add_crt(s, "crtbeginT.o");
 999         else if (output_type & TCC_OUTPUT_DYN)
1000             tcc_add_crt(s, "crtbeginS.o");
1001         else
1002             tcc_add_crt(s, "crtbegin.o");
1003 #elif TARGETOS_NetBSD
1004         if (output_type != TCC_OUTPUT_DLL)
1005             tcc_add_crt(s, "crt0.o");
1006         tcc_add_crt(s, "crti.o");
1007         if (s->static_link)
1008             tcc_add_crt(s, "crtbeginT.o");
1009         else if (output_type & TCC_OUTPUT_DYN)
1010             tcc_add_crt(s, "crtbeginS.o");
1011         else
1012             tcc_add_crt(s, "crtbegin.o");
1013 #elif defined TARGETOS_ANDROID
1014         if (output_type != TCC_OUTPUT_DLL)
1015             tcc_add_crt(s, "crtbegin_dynamic.o");
1016         else
1017             tcc_add_crt(s, "crtbegin_so.o");
1018 #else
1019         if (output_type != TCC_OUTPUT_DLL)
1020             tcc_add_crt(s, "crt1.o");
1021         tcc_add_crt(s, "crti.o");
1022 #endif
1023     }
1024     return 0;
1025 #endif
1026 }
1027
1028 LIBTCCAPI int tcc_add_include_path(TCCState *s, const char *pathname)
1029 {
1030     tcc_split_path(s, &s->include_paths, &s->nb_include_paths, pathname);
1031     return 0;
1032 }
1033
1034 LIBTCCAPI int tcc_add_sysinclude_path(TCCState *s, const char *pathname)
1035 {
1036     tcc_split_path(s, &s->sysinclude_paths, &s->nb_sysinclude_paths, pathname);
1037     return 0;
1038 }
1039
1040 /* add/update a 'DLLReference', Just find if level == -1  */
1041 ST_FUNC DLLReference *tcc_add_dllref(TCCState *s1, const char *dllname, int level)
1042 {
1043     DLLReference *ref = NULL;
1044     int i;
1045     for (i = 0; i < s1->nb_loaded_dlls; i++)
1046         if (0 == strcmp(s1->loaded_dlls[i]->name, dllname)) {
1047             ref = s1->loaded_dlls[i];
1048             break;
1049         }
1050     if (level == -1)
1051         return ref;
1052     if (ref) {
1053         if (level < ref->level)
1054             ref->level = level;
1055         ref->found = 1;
1056         return ref;
1057     }
1058     ref = tcc_mallocz(sizeof(DLLReference) + strlen(dllname));
1059     strcpy(ref->name, dllname);
1060     dynarray_add(&s1->loaded_dlls, &s1->nb_loaded_dlls, ref);
1061     ref->level = level;
1062     ref->index = s1->nb_loaded_dlls;
1063     return ref;
1064 }
1065
1066 /* OpenBSD: choose latest from libxxx.so.x.y versions */
1067 #if defined TARGETOS_OpenBSD && !defined _WIN32
1068 #include <glob.h>
1069 static int tcc_glob_so(TCCState *s1, const char *pattern, char *buf, int size)
1070 {
1071     const char *star;
1072     glob_t g;
1073     char *p;
1074     int i, v, v1, v2, v3;
1075
1076     star = strchr(pattern, '*');
1077     if (!star || glob(pattern, 0, NULL, &g))
1078         return -1;
1079     for (v = -1, i = 0; i < g.gl_pathc; ++i) {
1080         p = g.gl_pathv[i];
1081         if (2 != sscanf(p + (star - pattern), "%d.%d.%d", &v1, &v2, &v3))
1082             continue;
1083         if ((v1 = v1 * 1000 + v2) > v)
1084             v = v1, pstrcpy(buf, size, p);
1085     }
1086     globfree(&g);
1087     return v;
1088 }
1089 #endif
1090
1091 ST_FUNC int tcc_add_file_internal(TCCState *s1, const char *filename, int flags)
1092 {
1093     int fd, ret = -1;
1094
1095 #if defined TARGETOS_OpenBSD && !defined _WIN32
1096     char buf[1024];
1097     if (tcc_glob_so(s1, filename, buf, sizeof buf) >= 0)
1098         filename = buf;
1099 #endif
1100
1101     /* ignore binary files with -E */
1102     if (s1->output_type == TCC_OUTPUT_PREPROCESS
1103         && (flags & AFF_TYPE_BIN))
1104         return 0;
1105
1106     /* open the file */
1107     fd = _tcc_open(s1, filename);
1108     if (fd < 0) {
1109         if (flags & AFF_PRINT_ERROR)
1110             tcc_error_noabort("file '%s' not found", filename);
1111         return ret;
1112     }
1113
1114     s1->current_filename = filename;
1115     if (flags & AFF_TYPE_BIN) {
1116         ElfW(Ehdr) ehdr;
1117         int obj_type;
1118
1119         obj_type = tcc_object_type(fd, &ehdr);
1120         lseek(fd, 0, SEEK_SET);
1121
1122         switch (obj_type) {
1123
1124         case AFF_BINTYPE_REL:
1125             ret = tcc_load_object_file(s1, fd, 0);
1126             break;
1127
1128         case AFF_BINTYPE_AR:
1129             ret = tcc_load_archive(s1, fd, !(flags & AFF_WHOLE_ARCHIVE));
1130             break;
1131
1132 #ifdef TCC_TARGET_PE
1133         default:
1134             ret = pe_load_file(s1, fd, filename);
1135             goto check_success;
1136
1137 #elif defined TCC_TARGET_MACHO
1138         case AFF_BINTYPE_DYN:
1139         case_dyn_or_tbd:
1140             if (s1->output_type == TCC_OUTPUT_MEMORY) {
1141 #ifdef TCC_IS_NATIVE
1142                 void* dl;
1143                 const char* soname = filename;
1144                 if (obj_type != AFF_BINTYPE_DYN)
1145                     soname = macho_tbd_soname(filename);
1146                 dl = dlopen(soname, RTLD_GLOBAL | RTLD_LAZY);
1147                 if (dl)
1148                     tcc_add_dllref(s1, soname, 0)->handle = dl, ret = 0;
1149                 if (filename != soname)
1150                     tcc_free((void *)soname);
1151 #endif
1152             } else if (obj_type == AFF_BINTYPE_DYN) {
1153                 ret = macho_load_dll(s1, fd, filename, (flags & AFF_REFERENCED_DLL) != 0);
1154             } else {
1155                 ret = macho_load_tbd(s1, fd, filename, (flags & AFF_REFERENCED_DLL) != 0);
1156             }
1157             break;
1158         default:
1159         {
1160             const char *ext = tcc_fileextension(filename);
1161             if (!strcmp(ext, ".tbd"))
1162                 goto case_dyn_or_tbd;
1163             if (!strcmp(ext, ".dylib")) {
1164                 obj_type = AFF_BINTYPE_DYN;
1165                 goto case_dyn_or_tbd;
1166             }
1167             goto check_success;
1168         }
1169
1170 #else /* unix */
1171         case AFF_BINTYPE_DYN:
1172             if (s1->output_type == TCC_OUTPUT_MEMORY) {
1173 #ifdef TCC_IS_NATIVE
1174                 void* dl = dlopen(filename, RTLD_GLOBAL | RTLD_LAZY);
1175                 if (dl)
1176                     tcc_add_dllref(s1, filename, 0)->handle = dl, ret = 0;
1177 #endif
1178             } else
1179                 ret = tcc_load_dll(s1, fd, filename, (flags & AFF_REFERENCED_DLL) != 0);
1180             break;
1181
1182         default:
1183             /* as GNU ld, consider it is an ld script if not recognized */
1184             ret = tcc_load_ldscript(s1, fd);
1185             goto check_success;
1186
1187 #endif /* pe / macos / unix */
1188
1189 check_success:
1190             if (ret < 0)
1191                 tcc_error_noabort("%s: unrecognized file type", filename);
1192             break;
1193
1194 #ifdef TCC_TARGET_COFF
1195         case AFF_BINTYPE_C67:
1196             ret = tcc_load_coff(s1, fd);
1197             break;
1198 #endif
1199         }
1200         close(fd);
1201     } else {
1202         /* update target deps */
1203         dynarray_add(&s1->target_deps, &s1->nb_target_deps, tcc_strdup(filename));
1204         ret = tcc_compile(s1, flags, filename, fd);
1205     }
1206     s1->current_filename = NULL;
1207     return ret;
1208 }
1209
1210 LIBTCCAPI int tcc_add_file(TCCState *s, const char *filename)
1211 {
1212     int filetype = s->filetype;
1213     if (0 == (filetype & AFF_TYPE_MASK)) {
1214         /* use a file extension to detect a filetype */
1215         const char *ext = tcc_fileextension(filename);
1216         if (ext[0]) {
1217             ext++;
1218             if (!strcmp(ext, "S"))
1219                 filetype = AFF_TYPE_ASMPP;
1220             else if (!strcmp(ext, "s"))
1221                 filetype = AFF_TYPE_ASM;
1222             else if (!PATHCMP(ext, "c")
1223                      || !PATHCMP(ext, "h")
1224                      || !PATHCMP(ext, "i"))
1225                 filetype = AFF_TYPE_C;
1226             else
1227                 filetype |= AFF_TYPE_BIN;
1228         } else {
1229             filetype = AFF_TYPE_C;
1230         }
1231     }
1232     return tcc_add_file_internal(s, filename, filetype | AFF_PRINT_ERROR);
1233 }
1234
1235 LIBTCCAPI int tcc_add_library_path(TCCState *s, const char *pathname)
1236 {
1237     tcc_split_path(s, &s->library_paths, &s->nb_library_paths, pathname);
1238     return 0;
1239 }
1240
1241 static int tcc_add_library_internal(TCCState *s, const char *fmt,
1242     const char *filename, int flags, char **paths, int nb_paths)
1243 {
1244     char buf[1024];
1245     int i;
1246
1247     for(i = 0; i < nb_paths; i++) {
1248         snprintf(buf, sizeof(buf), fmt, paths[i], filename);
1249         if (tcc_add_file_internal(s, buf, flags | AFF_TYPE_BIN) == 0)
1250             return 0;
1251     }
1252     return -1;
1253 }
1254
1255 /* find and load a dll. Return non zero if not found */
1256 ST_FUNC int tcc_add_dll(TCCState *s, const char *filename, int flags)
1257 {
1258     return tcc_add_library_internal(s, "%s/%s", filename, flags,
1259         s->library_paths, s->nb_library_paths);
1260 }
1261
1262 /* find [cross-]libtcc1.a and tcc helper objects in library path */
1263 ST_FUNC void tcc_add_support(TCCState *s1, const char *filename)
1264 {
1265     char buf[100];
1266     if (CONFIG_TCC_CROSSPREFIX[0])
1267         filename = strcat(strcpy(buf, CONFIG_TCC_CROSSPREFIX), filename);
1268     if (tcc_add_dll(s1, filename, 0) < 0)
1269         tcc_error_noabort("%s not found", filename);
1270 }
1271
1272 #if !defined TCC_TARGET_PE && !defined TCC_TARGET_MACHO
1273 ST_FUNC int tcc_add_crt(TCCState *s1, const char *filename)
1274 {
1275     if (-1 == tcc_add_library_internal(s1, "%s/%s",
1276         filename, 0, s1->crt_paths, s1->nb_crt_paths))
1277         return tcc_error_noabort("file '%s' not found", filename);
1278     return 0;
1279 }
1280 #endif
1281
1282 /* the library name is the same as the argument of the '-l' option */
1283 LIBTCCAPI int tcc_add_library(TCCState *s, const char *libraryname)
1284 {
1285 #if defined TCC_TARGET_PE
1286     static const char * const libs[] = { "%s/%s.def", "%s/lib%s.def", "%s/%s.dll", "%s/lib%s.dll", "%s/lib%s.a", NULL };
1287     const char * const *pp = s->static_link ? libs + 4 : libs;
1288 #elif defined TCC_TARGET_MACHO
1289     static const char * const libs[] = { "%s/lib%s.dylib", "%s/lib%s.tbd", "%s/lib%s.a", NULL };
1290     const char * const *pp = s->static_link ? libs + 2 : libs;
1291 #elif defined TARGETOS_OpenBSD
1292     static const char * const libs[] = { "%s/lib%s.so.*", "%s/lib%s.a", NULL };
1293     const char * const *pp = s->static_link ? libs + 1 : libs;
1294 #else
1295     static const char * const libs[] = { "%s/lib%s.so", "%s/lib%s.a", NULL };
1296     const char * const *pp = s->static_link ? libs + 1 : libs;
1297 #endif
1298     int flags = s->filetype & AFF_WHOLE_ARCHIVE;
1299     while (*pp) {
1300         if (0 == tcc_add_library_internal(s, *pp,
1301             libraryname, flags, s->library_paths, s->nb_library_paths))
1302             return 0;
1303         ++pp;
1304     }
1305     return -1;
1306 }
1307
1308 PUB_FUNC int tcc_add_library_err(TCCState *s1, const char *libname)
1309 {
1310     int ret = tcc_add_library(s1, libname);
1311     if (ret < 0)
1312         tcc_error_noabort("library '%s' not found", libname);
1313     return ret;
1314 }
1315
1316 /* handle #pragma comment(lib,) */
1317 ST_FUNC void tcc_add_pragma_libs(TCCState *s1)
1318 {
1319     int i;
1320     for (i = 0; i < s1->nb_pragma_libs; i++)
1321         tcc_add_library_err(s1, s1->pragma_libs[i]);
1322 }
1323
1324 LIBTCCAPI int tcc_add_symbol(TCCState *s1, const char *name, const void *val)
1325 {
1326 #ifdef TCC_TARGET_PE
1327     /* On x86_64 'val' might not be reachable with a 32bit offset.
1328        So it is handled here as if it were in a DLL. */
1329     pe_putimport(s1, 0, name, (uintptr_t)val);
1330 #else
1331     char buf[256];
1332     if (s1->leading_underscore) {
1333         buf[0] = '_';
1334         pstrcpy(buf + 1, sizeof(buf) - 1, name);
1335         name = buf;
1336     }
1337     set_global_sym(s1, name, NULL, (addr_t)(uintptr_t)val); /* NULL: SHN_ABS */
1338 #endif
1339     return 0;
1340 }
1341
1342 LIBTCCAPI void tcc_set_lib_path(TCCState *s, const char *path)
1343 {
1344     tcc_free(s->tcc_lib_path);
1345     s->tcc_lib_path = tcc_strdup(path);
1346 }
1347
1348 /********************************************************/
1349 /* options parser */
1350
1351 static int strstart(const char *val, const char **str)
1352 {
1353     const char *p, *q;
1354     p = *str;
1355     q = val;
1356     while (*q) {
1357         if (*p != *q)
1358             return 0;
1359         p++;
1360         q++;
1361     }
1362     *str = p;
1363     return 1;
1364 }
1365
1366 /* Like strstart, but automatically takes into account that ld options can
1367  *
1368  * - start with double or single dash (e.g. '--soname' or '-soname')
1369  * - arguments can be given as separate or after '=' (e.g. '-Wl,-soname,x.so'
1370  *   or '-Wl,-soname=x.so')
1371  *
1372  * you provide `val` always in 'option[=]' form (no leading -)
1373  */
1374 static int link_option(const char *str, const char *val, const char **ptr)
1375 {
1376     const char *p, *q;
1377     int ret;
1378
1379     /* there should be 1 or 2 dashes */
1380     if (*str++ != '-')
1381         return 0;
1382     if (*str == '-')
1383         str++;
1384
1385     /* then str & val should match (potentially up to '=') */
1386     p = str;
1387     q = val;
1388
1389     ret = 1;
1390     if (q[0] == '?') {
1391         ++q;
1392         if (strstart("no-", &p))
1393             ret = -1;
1394     }
1395
1396     while (*q != '\0' && *q != '=') {
1397         if (*p != *q)
1398             return 0;
1399         p++;
1400         q++;
1401     }
1402
1403     /* '=' near eos means ',' or '=' is ok */
1404     if (*q == '=') {
1405         if (*p == 0)
1406             *ptr = p;
1407         if (*p != ',' && *p != '=')
1408             return 0;
1409         p++;
1410     } else if (*p) {
1411         return 0;
1412     }
1413     *ptr = p;
1414     return ret;
1415 }
1416
1417 static const char *skip_linker_arg(const char **str)
1418 {
1419     const char *s1 = *str;
1420     const char *s2 = strchr(s1, ',');
1421     *str = s2 ? s2++ : (s2 = s1 + strlen(s1));
1422     return s2;
1423 }
1424
1425 static void copy_linker_arg(char **pp, const char *s, int sep)
1426 {
1427     const char *q = s;
1428     char *p = *pp;
1429     int l = 0;
1430     if (p && sep)
1431         p[l = strlen(p)] = sep, ++l;
1432     skip_linker_arg(&q);
1433     pstrncpy(l + (*pp = tcc_realloc(p, q - s + l + 1)), s, q - s);
1434 }
1435
1436 static void args_parser_add_file(TCCState *s, const char* filename, int filetype)
1437 {
1438     struct filespec *f = tcc_malloc(sizeof *f + strlen(filename));
1439     f->type = filetype;
1440     strcpy(f->name, filename);
1441     dynarray_add(&s->files, &s->nb_files, f);
1442 }
1443
1444 /* set linker options */
1445 static int tcc_set_linker(TCCState *s, const char *option)
1446 {
1447     TCCState *s1 = s;
1448     while (*option) {
1449
1450         const char *p = NULL;
1451         char *end = NULL;
1452         int ignoring = 0;
1453         int ret;
1454
1455         if (link_option(option, "Bsymbolic", &p)) {
1456             s->symbolic = 1;
1457         } else if (link_option(option, "nostdlib", &p)) {
1458             s->nostdlib = 1;
1459         } else if (link_option(option, "e=", &p)
1460                ||  link_option(option, "entry=", &p)) {
1461             copy_linker_arg(&s->elf_entryname, p, 0);
1462         } else if (link_option(option, "fini=", &p)) {
1463             copy_linker_arg(&s->fini_symbol, p, 0);
1464             ignoring = 1;
1465         } else if (link_option(option, "image-base=", &p)
1466                 || link_option(option, "Ttext=", &p)) {
1467             s->text_addr = strtoull(p, &end, 16);
1468             s->has_text_addr = 1;
1469         } else if (link_option(option, "init=", &p)) {
1470             copy_linker_arg(&s->init_symbol, p, 0);
1471             ignoring = 1;
1472         } else if (link_option(option, "Map=", &p)) {
1473             copy_linker_arg(&s->mapfile, p, 0);
1474             ignoring = 1;
1475         } else if (link_option(option, "oformat=", &p)) {
1476 #if defined(TCC_TARGET_PE)
1477             if (strstart("pe-", &p)) {
1478 #elif PTR_SIZE == 8
1479             if (strstart("elf64-", &p)) {
1480 #else
1481             if (strstart("elf32-", &p)) {
1482 #endif
1483                 s->output_format = TCC_OUTPUT_FORMAT_ELF;
1484             } else if (!strcmp(p, "binary")) {
1485                 s->output_format = TCC_OUTPUT_FORMAT_BINARY;
1486 #ifdef TCC_TARGET_COFF
1487             } else if (!strcmp(p, "coff")) {
1488                 s->output_format = TCC_OUTPUT_FORMAT_COFF;
1489 #endif
1490             } else
1491                 goto err;
1492
1493         } else if (link_option(option, "as-needed", &p)) {
1494             ignoring = 1;
1495         } else if (link_option(option, "O", &p)) {
1496             ignoring = 1;
1497         } else if (link_option(option, "export-all-symbols", &p)) {
1498             s->rdynamic = 1;
1499         } else if (link_option(option, "export-dynamic", &p)) {
1500             s->rdynamic = 1;
1501         } else if (link_option(option, "rpath=", &p)) {
1502             copy_linker_arg(&s->rpath, p, ':');
1503         } else if (link_option(option, "enable-new-dtags", &p)) {
1504             s->enable_new_dtags = 1;
1505         } else if (link_option(option, "section-alignment=", &p)) {
1506             s->section_align = strtoul(p, &end, 16);
1507         } else if (link_option(option, "soname=", &p)) {
1508             copy_linker_arg(&s->soname, p, 0);
1509         } else if (link_option(option, "install_name=", &p)) {
1510             copy_linker_arg(&s->soname, p, 0);
1511 #ifdef TCC_TARGET_PE
1512         } else if (link_option(option, "large-address-aware", &p)) {
1513             s->pe_characteristics |= 0x20;
1514         } else if (link_option(option, "file-alignment=", &p)) {
1515             s->pe_file_align = strtoul(p, &end, 16);
1516         } else if (link_option(option, "stack=", &p)) {
1517             s->pe_stack_size = strtoul(p, &end, 10);
1518         } else if (link_option(option, "subsystem=", &p)) {
1519 #if defined(TCC_TARGET_I386) || defined(TCC_TARGET_X86_64)
1520             if (!strcmp(p, "native")) {
1521                 s->pe_subsystem = 1;
1522             } else if (!strcmp(p, "console")) {
1523                 s->pe_subsystem = 3;
1524             } else if (!strcmp(p, "gui") || !strcmp(p, "windows")) {
1525                 s->pe_subsystem = 2;
1526             } else if (!strcmp(p, "posix")) {
1527                 s->pe_subsystem = 7;
1528             } else if (!strcmp(p, "efiapp")) {
1529                 s->pe_subsystem = 10;
1530             } else if (!strcmp(p, "efiboot")) {
1531                 s->pe_subsystem = 11;
1532             } else if (!strcmp(p, "efiruntime")) {
1533                 s->pe_subsystem = 12;
1534             } else if (!strcmp(p, "efirom")) {
1535                 s->pe_subsystem = 13;
1536 #elif defined(TCC_TARGET_ARM)
1537             if (!strcmp(p, "wince")) {
1538                 s->pe_subsystem = 9;
1539 #endif
1540             } else
1541                 goto err;
1542 #endif
1543 #ifdef TCC_TARGET_MACHO
1544         } else if (link_option(option, "all_load", &p)) {
1545             s->filetype |= AFF_WHOLE_ARCHIVE;
1546         } else if (link_option(option, "force_load", &p)) {
1547             s->filetype |= AFF_WHOLE_ARCHIVE;
1548             args_parser_add_file(s, p, AFF_TYPE_LIB | (s->filetype & ~AFF_TYPE_MASK));
1549             s->nb_libraries++;
1550         } else if (link_option(option, "single_module", &p)) {
1551             ignoring = 1;
1552 #endif
1553         } else if (ret = link_option(option, "?whole-archive", &p), ret) {
1554             if (ret > 0)
1555                 s->filetype |= AFF_WHOLE_ARCHIVE;
1556             else
1557                 s->filetype &= ~AFF_WHOLE_ARCHIVE;
1558         } else if (link_option(option, "z=", &p)) {
1559             ignoring = 1;
1560         } else if (p) {
1561             return 0;
1562         } else {
1563     err:
1564             return tcc_error_noabort("unsupported linker option '%s'", option);
1565         }
1566         if (ignoring)
1567             tcc_warning_c(warn_unsupported)("unsupported linker option '%s'", option);
1568         option = skip_linker_arg(&p);
1569     }
1570     return 1;
1571 }
1572
1573 typedef struct TCCOption {
1574     const char *name;
1575     uint16_t index;
1576     uint16_t flags;
1577 } TCCOption;
1578
1579 enum {
1580     TCC_OPTION_ignored = 0,
1581     TCC_OPTION_HELP,
1582     TCC_OPTION_HELP2,
1583     TCC_OPTION_v,
1584     TCC_OPTION_I,
1585     TCC_OPTION_D,
1586     TCC_OPTION_U,
1587     TCC_OPTION_P,
1588     TCC_OPTION_L,
1589     TCC_OPTION_B,
1590     TCC_OPTION_l,
1591     TCC_OPTION_bench,
1592     TCC_OPTION_bt,
1593     TCC_OPTION_b,
1594     TCC_OPTION_ba,
1595     TCC_OPTION_g,
1596     TCC_OPTION_c,
1597     TCC_OPTION_dumpversion,
1598     TCC_OPTION_d,
1599     TCC_OPTION_static,
1600     TCC_OPTION_std,
1601     TCC_OPTION_shared,
1602     TCC_OPTION_soname,
1603     TCC_OPTION_o,
1604     TCC_OPTION_r,
1605     TCC_OPTION_Wl,
1606     TCC_OPTION_Wp,
1607     TCC_OPTION_W,
1608     TCC_OPTION_O,
1609     TCC_OPTION_mfloat_abi,
1610     TCC_OPTION_m,
1611     TCC_OPTION_f,
1612     TCC_OPTION_isystem,
1613     TCC_OPTION_iwithprefix,
1614     TCC_OPTION_include,
1615     TCC_OPTION_nostdinc,
1616     TCC_OPTION_nostdlib,
1617     TCC_OPTION_print_search_dirs,
1618     TCC_OPTION_rdynamic,
1619     TCC_OPTION_pthread,
1620     TCC_OPTION_run,
1621     TCC_OPTION_w,
1622     TCC_OPTION_E,
1623     TCC_OPTION_M,
1624     TCC_OPTION_MD,
1625     TCC_OPTION_MF,
1626     TCC_OPTION_MM,
1627     TCC_OPTION_MMD,
1628     TCC_OPTION_x,
1629     TCC_OPTION_ar,
1630     TCC_OPTION_impdef,
1631     TCC_OPTION_dynamiclib,
1632     TCC_OPTION_flat_namespace,
1633     TCC_OPTION_two_levelnamespace,
1634     TCC_OPTION_undefined,
1635     TCC_OPTION_install_name,
1636     TCC_OPTION_compatibility_version ,
1637     TCC_OPTION_current_version,
1638 };
1639
1640 #define TCC_OPTION_HAS_ARG 0x0001
1641 #define TCC_OPTION_NOSEP   0x0002 /* cannot have space before option and arg */
1642
1643 static const TCCOption tcc_options[] = {
1644     { "h", TCC_OPTION_HELP, 0 },
1645     { "-help", TCC_OPTION_HELP, 0 },
1646     { "?", TCC_OPTION_HELP, 0 },
1647     { "hh", TCC_OPTION_HELP2, 0 },
1648     { "v", TCC_OPTION_v, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1649     { "-version", TCC_OPTION_v, 0 }, /* handle as verbose, also prints version*/
1650     { "I", TCC_OPTION_I, TCC_OPTION_HAS_ARG },
1651     { "D", TCC_OPTION_D, TCC_OPTION_HAS_ARG },
1652     { "U", TCC_OPTION_U, TCC_OPTION_HAS_ARG },
1653     { "P", TCC_OPTION_P, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1654     { "L", TCC_OPTION_L, TCC_OPTION_HAS_ARG },
1655     { "B", TCC_OPTION_B, TCC_OPTION_HAS_ARG },
1656     { "l", TCC_OPTION_l, TCC_OPTION_HAS_ARG },
1657     { "bench", TCC_OPTION_bench, 0 },
1658 #ifdef CONFIG_TCC_BACKTRACE
1659     { "bt", TCC_OPTION_bt, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1660 #endif
1661 #ifdef CONFIG_TCC_BCHECK
1662     { "b", TCC_OPTION_b, 0 },
1663 #endif
1664     { "g", TCC_OPTION_g, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1665 #ifdef TCC_TARGET_MACHO
1666     { "compatibility_version", TCC_OPTION_compatibility_version, TCC_OPTION_HAS_ARG },
1667     { "current_version", TCC_OPTION_current_version, TCC_OPTION_HAS_ARG },
1668 #endif
1669     { "c", TCC_OPTION_c, 0 },
1670 #ifdef TCC_TARGET_MACHO
1671     { "dynamiclib", TCC_OPTION_dynamiclib, 0 },
1672 #endif
1673     { "dumpversion", TCC_OPTION_dumpversion, 0},
1674     { "d", TCC_OPTION_d, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1675     { "static", TCC_OPTION_static, 0 },
1676     { "std", TCC_OPTION_std, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1677     { "shared", TCC_OPTION_shared, 0 },
1678     { "soname", TCC_OPTION_soname, TCC_OPTION_HAS_ARG },
1679     { "o", TCC_OPTION_o, TCC_OPTION_HAS_ARG },
1680     { "pthread", TCC_OPTION_pthread, 0},
1681     { "run", TCC_OPTION_run, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1682     { "rdynamic", TCC_OPTION_rdynamic, 0 },
1683     { "r", TCC_OPTION_r, 0 },
1684     { "Wl,", TCC_OPTION_Wl, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1685     { "Wp,", TCC_OPTION_Wp, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1686     { "W", TCC_OPTION_W, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1687     { "O", TCC_OPTION_O, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1688 #ifdef TCC_TARGET_ARM
1689     { "mfloat-abi", TCC_OPTION_mfloat_abi, TCC_OPTION_HAS_ARG },
1690 #endif
1691     { "m", TCC_OPTION_m, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1692 #ifdef TCC_TARGET_MACHO
1693     { "flat_namespace", TCC_OPTION_flat_namespace, 0 },
1694 #endif
1695     { "f", TCC_OPTION_f, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1696     { "isystem", TCC_OPTION_isystem, TCC_OPTION_HAS_ARG },
1697     { "include", TCC_OPTION_include, TCC_OPTION_HAS_ARG },
1698     { "nostdinc", TCC_OPTION_nostdinc, 0 },
1699     { "nostdlib", TCC_OPTION_nostdlib, 0 },
1700     { "print-search-dirs", TCC_OPTION_print_search_dirs, 0 },
1701     { "w", TCC_OPTION_w, 0 },
1702     { "E", TCC_OPTION_E, 0},
1703     { "M", TCC_OPTION_M, 0},
1704     { "MD", TCC_OPTION_MD, 0},
1705     { "MF", TCC_OPTION_MF, TCC_OPTION_HAS_ARG },
1706     { "MM", TCC_OPTION_MM, 0},
1707     { "MMD", TCC_OPTION_MMD, 0},
1708     { "x", TCC_OPTION_x, TCC_OPTION_HAS_ARG },
1709     { "ar", TCC_OPTION_ar, 0},
1710 #ifdef TCC_TARGET_PE
1711     { "impdef", TCC_OPTION_impdef, 0},
1712 #endif
1713 #ifdef TCC_TARGET_MACHO
1714     { "install_name", TCC_OPTION_install_name, TCC_OPTION_HAS_ARG },
1715     { "two_levelnamespace", TCC_OPTION_two_levelnamespace, 0 },
1716     { "undefined", TCC_OPTION_undefined, TCC_OPTION_HAS_ARG },
1717 #endif
1718     /* ignored (silently, except after -Wunsupported) */
1719     { "arch", 0, TCC_OPTION_HAS_ARG},
1720     { "C", 0, 0 },
1721     { "-param", 0, TCC_OPTION_HAS_ARG },
1722     { "pedantic", 0, 0 },
1723     { "pipe", 0, 0 },
1724     { "s", 0, 0 },
1725     { "traditional", 0, 0 },
1726     { NULL, 0, 0 },
1727 };
1728
1729 typedef struct FlagDef {
1730     uint16_t offset;
1731     uint16_t flags;
1732     const char *name;
1733 } FlagDef;
1734
1735 #define WD_ALL    0x0001 /* warning is activated when using -Wall */
1736 #define FD_INVERT 0x0002 /* invert value before storing */
1737
1738 static const FlagDef options_W[] = {
1739     { offsetof(TCCState, warn_all), WD_ALL, "all" },
1740     { offsetof(TCCState, warn_error), 0, "error" },
1741     { offsetof(TCCState, warn_write_strings), 0, "write-strings" },
1742     { offsetof(TCCState, warn_unsupported), 0, "unsupported" },
1743     { offsetof(TCCState, warn_implicit_function_declaration), WD_ALL, "implicit-function-declaration" },
1744     { offsetof(TCCState, warn_discarded_qualifiers), WD_ALL, "discarded-qualifiers" },
1745     { 0, 0, NULL }
1746 };
1747
1748 static const FlagDef options_f[] = {
1749     { offsetof(TCCState, char_is_unsigned), 0, "unsigned-char" },
1750     { offsetof(TCCState, char_is_unsigned), FD_INVERT, "signed-char" },
1751     { offsetof(TCCState, nocommon), FD_INVERT, "common" },
1752     { offsetof(TCCState, leading_underscore), 0, "leading-underscore" },
1753     { offsetof(TCCState, ms_extensions), 0, "ms-extensions" },
1754     { offsetof(TCCState, dollars_in_identifiers), 0, "dollars-in-identifiers" },
1755     { offsetof(TCCState, test_coverage), 0, "test-coverage" },
1756     { 0, 0, NULL }
1757 };
1758
1759 static const FlagDef options_m[] = {
1760     { offsetof(TCCState, ms_bitfields), 0, "ms-bitfields" },
1761 #ifdef TCC_TARGET_X86_64
1762     { offsetof(TCCState, nosse), FD_INVERT, "sse" },
1763 #endif
1764     { 0, 0, NULL }
1765 };
1766
1767 static int set_flag(TCCState *s, const FlagDef *flags, const char *name)
1768 {
1769     int value, mask, ret;
1770     const FlagDef *p;
1771     const char *r;
1772     unsigned char *f;
1773
1774     r = name, value = !strstart("no-", &r), mask = 0;
1775
1776     /* when called with options_W, look for -W[no-]error=<option> */
1777     if ((flags->flags & WD_ALL) && strstart("error=", &r))
1778         value = value ? WARN_ON|WARN_ERR : WARN_NOE, mask = WARN_ON;
1779
1780     for (ret = -1, p = flags; p->name; ++p) {
1781         if (ret) {
1782             if (strcmp(r, p->name))
1783                 continue;
1784         } else {
1785             if (0 == (p->flags & WD_ALL))
1786                 continue;
1787         }
1788
1789         f = (unsigned char *)s + p->offset;
1790         *f = (*f & mask) | (value ^ !!(p->flags & FD_INVERT));
1791
1792         if (ret) {
1793             ret = 0;
1794             if (strcmp(r, "all"))
1795                 break;
1796         }
1797     }
1798     return ret;
1799 }
1800
1801 static int args_parser_make_argv(const char *r, int *argc, char ***argv)
1802 {
1803     int ret = 0, q, c;
1804     CString str;
1805     for(;;) {
1806         while (c = (unsigned char)*r, c && c <= ' ')
1807           ++r;
1808         if (c == 0)
1809             break;
1810         q = 0;
1811         cstr_new(&str);
1812         while (c = (unsigned char)*r, c) {
1813             ++r;
1814             if (c == '\\' && (*r == '"' || *r == '\\')) {
1815                 c = *r++;
1816             } else if (c == '"') {
1817                 q = !q;
1818                 continue;
1819             } else if (q == 0 && c <= ' ') {
1820                 break;
1821             }
1822             cstr_ccat(&str, c);
1823         }
1824         cstr_ccat(&str, 0);
1825         //printf("<%s>\n", str.data), fflush(stdout);
1826         dynarray_add(argv, argc, tcc_strdup(str.data));
1827         cstr_free(&str);
1828         ++ret;
1829     }
1830     return ret;
1831 }
1832
1833 /* read list file */
1834 static int args_parser_listfile(TCCState *s,
1835     const char *filename, int optind, int *pargc, char ***pargv)
1836 {
1837     TCCState *s1 = s;
1838     int fd, i;
1839     char *p;
1840     int argc = 0;
1841     char **argv = NULL;
1842
1843     fd = open(filename, O_RDONLY | O_BINARY);
1844     if (fd < 0)
1845         return tcc_error_noabort("listfile '%s' not found", filename);
1846
1847     p = tcc_load_text(fd);
1848     for (i = 0; i < *pargc; ++i)
1849         if (i == optind)
1850             args_parser_make_argv(p, &argc, &argv);
1851         else
1852             dynarray_add(&argv, &argc, tcc_strdup((*pargv)[i]));
1853
1854     tcc_free(p);
1855     dynarray_reset(&s->argv, &s->argc);
1856     *pargc = s->argc = argc, *pargv = s->argv = argv;
1857     return 0;
1858 }
1859
1860 #if defined TCC_TARGET_MACHO
1861 static uint32_t parse_version(TCCState *s1, const char *version)
1862 {
1863     uint32_t a = 0;
1864     uint32_t b = 0;
1865     uint32_t c = 0;
1866     char* last;
1867
1868     a = strtoul(version, &last, 10);
1869     if (*last == '.') {
1870         b = strtoul(&last[1], &last, 10);
1871         if (*last == '.')
1872              c = strtoul(&last[1], &last, 10);
1873     }
1874     if (*last || a > 0xffff || b > 0xff || c > 0xff)
1875         tcc_error_noabort("version a.b.c not correct: %s", version);
1876     return (a << 16) | (b << 8) | c;
1877 }
1878 #endif
1879
1880 PUB_FUNC int tcc_parse_args(TCCState *s, int *pargc, char ***pargv, int optind)
1881 {
1882     TCCState *s1 = s;
1883     const TCCOption *popt;
1884     const char *optarg, *r;
1885     const char *run = NULL;
1886     int x;
1887     int tool = 0, arg_start = 0, noaction = optind;
1888     char **argv = *pargv;
1889     int argc = *pargc;
1890
1891     cstr_reset(&s->linker_arg);
1892
1893     while (optind < argc) {
1894         r = argv[optind];
1895         if (r[0] == '@' && r[1] != '\0') {
1896             if (args_parser_listfile(s, r + 1, optind, &argc, &argv))
1897                 return -1;
1898             continue;
1899         }
1900         optind++;
1901         if (tool) {
1902             if (r[0] == '-' && r[1] == 'v' && r[2] == 0)
1903                 ++s->verbose;
1904             continue;
1905         }
1906 reparse:
1907         if (r[0] != '-' || r[1] == '\0') {
1908             args_parser_add_file(s, r, s->filetype);
1909             if (run) {
1910 dorun:
1911                 if (tcc_set_options(s, run))
1912                     return -1;
1913                 arg_start = optind - 1;
1914                 break;
1915             }
1916             continue;
1917         }
1918
1919         /* allow "tcc files... -run -- args ..." */
1920         if (r[1] == '-' && r[2] == '\0' && run)
1921             goto dorun;
1922
1923         /* find option in table */
1924         for(popt = tcc_options; ; ++popt) {
1925             const char *p1 = popt->name;
1926             const char *r1 = r + 1;
1927             if (p1 == NULL)
1928                 return tcc_error_noabort("invalid option -- '%s'", r);
1929             if (!strstart(p1, &r1))
1930                 continue;
1931             optarg = r1;
1932             if (popt->flags & TCC_OPTION_HAS_ARG) {
1933                 if (*r1 == '\0' && !(popt->flags & TCC_OPTION_NOSEP)) {
1934                     if (optind >= argc)
1935                 arg_err:
1936                         return tcc_error_noabort("argument to '%s' is missing", r);
1937                     optarg = argv[optind++];
1938                 }
1939             } else if (*r1 != '\0')
1940                 continue;
1941             break;
1942         }
1943
1944         switch(popt->index) {
1945         case TCC_OPTION_HELP:
1946             x = OPT_HELP;
1947             goto extra_action;
1948         case TCC_OPTION_HELP2:
1949             x = OPT_HELP2;
1950             goto extra_action;
1951         case TCC_OPTION_I:
1952             tcc_add_include_path(s, optarg);
1953             break;
1954         case TCC_OPTION_D:
1955             tcc_define_symbol(s, optarg, NULL);
1956             break;
1957         case TCC_OPTION_U:
1958             tcc_undefine_symbol(s, optarg);
1959             break;
1960         case TCC_OPTION_L:
1961             tcc_add_library_path(s, optarg);
1962             break;
1963         case TCC_OPTION_B:
1964             /* set tcc utilities path (mainly for tcc development) */
1965             tcc_set_lib_path(s, optarg);
1966             ++noaction;
1967             break;
1968         case TCC_OPTION_l:
1969             args_parser_add_file(s, optarg, AFF_TYPE_LIB | (s->filetype & ~AFF_TYPE_MASK));
1970             s->nb_libraries++;
1971             break;
1972         case TCC_OPTION_pthread:
1973             s->option_pthread = 1;
1974             break;
1975         case TCC_OPTION_bench:
1976             s->do_bench = 1;
1977             break;
1978 #ifdef CONFIG_TCC_BACKTRACE
1979         case TCC_OPTION_bt:
1980             s->rt_num_callers = atoi(optarg);
1981             s->do_backtrace = 1;
1982             s->do_debug = 1;
1983             s->dwarf = DWARF_VERSION;
1984             break;
1985 #endif
1986 #ifdef CONFIG_TCC_BCHECK
1987         case TCC_OPTION_b:
1988             s->do_bounds_check = 1;
1989             s->do_backtrace = 1;
1990             s->do_debug = 1;
1991             s->dwarf = DWARF_VERSION;
1992             break;
1993 #endif
1994         case TCC_OPTION_g:
1995             s->do_debug = 1;
1996             s->dwarf = DWARF_VERSION;
1997
1998             if (strstart("dwarf", &optarg))
1999                 s->dwarf = (*optarg) ? (0 - atoi(optarg)) : DEFAULT_DWARF_VERSION;
2000             break;
2001         case TCC_OPTION_c:
2002             x = TCC_OUTPUT_OBJ;
2003         set_output_type:
2004             if (s->output_type)
2005                 tcc_warning("-%s: overriding compiler action already specified", popt->name);
2006             s->output_type = x;
2007             break;
2008         case TCC_OPTION_d:
2009             if (*optarg == 'D')
2010                 s->dflag = 3;
2011             else if (*optarg == 'M')
2012                 s->dflag = 7;
2013             else if (*optarg == 't')
2014                 s->dflag = 16;
2015             else if (isnum(*optarg))
2016                 s->g_debug |= atoi(optarg);
2017             else
2018                 goto unsupported_option;
2019             break;
2020         case TCC_OPTION_static:
2021             s->static_link = 1;
2022             break;
2023         case TCC_OPTION_std:
2024             if (strcmp(optarg, "=c11") == 0)
2025                 s->cversion = 201112;
2026             break;
2027         case TCC_OPTION_shared:
2028             x = TCC_OUTPUT_DLL;
2029             goto set_output_type;
2030         case TCC_OPTION_soname:
2031             s->soname = tcc_strdup(optarg);
2032             break;
2033         case TCC_OPTION_o:
2034             if (s->outfile) {
2035                 tcc_warning("multiple -o option");
2036                 tcc_free(s->outfile);
2037             }
2038             s->outfile = tcc_strdup(optarg);
2039             break;
2040         case TCC_OPTION_r:
2041             /* generate a .o merging several output files */
2042             s->option_r = 1;
2043             x = TCC_OUTPUT_OBJ;
2044             goto set_output_type;
2045         case TCC_OPTION_isystem:
2046             tcc_add_sysinclude_path(s, optarg);
2047             break;
2048         case TCC_OPTION_include:
2049             cstr_printf(&s->cmdline_incl, "#include \"%s\"\n", optarg);
2050             break;
2051         case TCC_OPTION_nostdinc:
2052             s->nostdinc = 1;
2053             break;
2054         case TCC_OPTION_nostdlib:
2055             s->nostdlib = 1;
2056             break;
2057         case TCC_OPTION_run:
2058 #ifndef TCC_IS_NATIVE
2059             return tcc_error_noabort("-run is not available in a cross compiler");
2060 #else
2061             run = optarg;
2062             x = TCC_OUTPUT_MEMORY;
2063             goto set_output_type;
2064 #endif
2065         case TCC_OPTION_v:
2066             do ++s->verbose; while (*optarg++ == 'v');
2067             ++noaction;
2068             break;
2069         case TCC_OPTION_f:
2070             if (set_flag(s, options_f, optarg) < 0)
2071                 goto unsupported_option;
2072             break;
2073 #ifdef TCC_TARGET_ARM
2074         case TCC_OPTION_mfloat_abi:
2075             /* tcc doesn't support soft float yet */
2076             if (!strcmp(optarg, "softfp")) {
2077                 s->float_abi = ARM_SOFTFP_FLOAT;
2078             } else if (!strcmp(optarg, "hard"))
2079                 s->float_abi = ARM_HARD_FLOAT;
2080             else
2081                 return tcc_error_noabort("unsupported float abi '%s'", optarg);
2082             break;
2083 #endif
2084         case TCC_OPTION_m:
2085             if (set_flag(s, options_m, optarg) < 0) {
2086                 if (x = atoi(optarg), x != 32 && x != 64)
2087                     goto unsupported_option;
2088                 if (PTR_SIZE != x/8)
2089                     return x;
2090                 ++noaction;
2091             }
2092             break;
2093         case TCC_OPTION_W:
2094             s->warn_none = 0;
2095             if (optarg[0] && set_flag(s, options_W, optarg) < 0)
2096                 goto unsupported_option;
2097             break;
2098         case TCC_OPTION_w:
2099             s->warn_none = 1;
2100             break;
2101         case TCC_OPTION_rdynamic:
2102             s->rdynamic = 1;
2103             break;
2104         case TCC_OPTION_Wl:
2105             if (s->linker_arg.size)
2106                 ((char*)s->linker_arg.data)[s->linker_arg.size - 1] = ',';
2107             cstr_cat(&s->linker_arg, optarg, 0);
2108             x = tcc_set_linker(s, s->linker_arg.data);
2109             if (x)
2110                 cstr_reset(&s->linker_arg);
2111             if (x < 0)
2112                 return -1;
2113             break;
2114         case TCC_OPTION_Wp:
2115             r = optarg;
2116             goto reparse;
2117         case TCC_OPTION_E:
2118             x = TCC_OUTPUT_PREPROCESS;
2119             goto set_output_type;
2120         case TCC_OPTION_P:
2121             s->Pflag = atoi(optarg) + 1;
2122             break;
2123         case TCC_OPTION_M:
2124             s->include_sys_deps = 1;
2125             // fall through
2126         case TCC_OPTION_MM:
2127             s->just_deps = 1;
2128             if(!s->deps_outfile)
2129                 s->deps_outfile = tcc_strdup("-");
2130             // fall through
2131         case TCC_OPTION_MMD:
2132             s->gen_deps = 1;
2133             break;
2134         case TCC_OPTION_MD:
2135             s->gen_deps = 1;
2136             s->include_sys_deps = 1;
2137             break;
2138         case TCC_OPTION_MF:
2139             s->deps_outfile = tcc_strdup(optarg);
2140             break;
2141         case TCC_OPTION_dumpversion:
2142             printf ("%s\n", TCC_VERSION);
2143             exit(0);
2144             break;
2145         case TCC_OPTION_x:
2146             x = 0;
2147             if (*optarg == 'c')
2148                 x = AFF_TYPE_C;
2149             else if (*optarg == 'a')
2150                 x = AFF_TYPE_ASMPP;
2151             else if (*optarg == 'b')
2152                 x = AFF_TYPE_BIN;
2153             else if (*optarg == 'n')
2154                 x = AFF_TYPE_NONE;
2155             else
2156                 tcc_warning("unsupported language '%s'", optarg);
2157             s->filetype = x | (s->filetype & ~AFF_TYPE_MASK);
2158             break;
2159         case TCC_OPTION_O:
2160             s->optimize = atoi(optarg);
2161             break;
2162         case TCC_OPTION_print_search_dirs:
2163             x = OPT_PRINT_DIRS;
2164             goto extra_action;
2165         case TCC_OPTION_impdef:
2166             x = OPT_IMPDEF;
2167             goto extra_action;
2168 #if defined TCC_TARGET_MACHO
2169         case TCC_OPTION_dynamiclib:
2170             x = TCC_OUTPUT_DLL;
2171             goto set_output_type;
2172         case TCC_OPTION_flat_namespace:
2173              break;
2174         case TCC_OPTION_two_levelnamespace:
2175              break;
2176         case TCC_OPTION_undefined:
2177              break;
2178         case TCC_OPTION_install_name:
2179             s->install_name = tcc_strdup(optarg);
2180             break;
2181         case TCC_OPTION_compatibility_version:
2182             s->compatibility_version = parse_version(s, optarg);
2183             break;
2184         case TCC_OPTION_current_version:
2185             s->current_version = parse_version(s, optarg);;
2186             break;
2187 #endif
2188         case TCC_OPTION_ar:
2189             x = OPT_AR;
2190         extra_action:
2191             arg_start = optind - 1;
2192             if (arg_start != noaction)
2193                 return tcc_error_noabort("cannot parse %s here", r);
2194             tool = x;
2195             break;
2196         default:
2197 unsupported_option:
2198             tcc_warning_c(warn_unsupported)("unsupported option '%s'", r);
2199             break;
2200         }
2201     }
2202     if (s->linker_arg.size) {
2203         r = s->linker_arg.data;
2204         goto arg_err;
2205     }
2206     *pargc = argc - arg_start;
2207     *pargv = argv + arg_start;
2208     if (tool)
2209         return tool;
2210     if (optind != noaction)
2211         return 0;
2212     if (s->verbose == 2)
2213         return OPT_PRINT_DIRS;
2214     if (s->verbose)
2215         return OPT_V;
2216     return OPT_HELP;
2217 }
2218
2219 LIBTCCAPI int tcc_set_options(TCCState *s, const char *r)
2220 {
2221     char **argv = NULL;
2222     int argc = 0, ret;
2223     args_parser_make_argv(r, &argc, &argv);
2224     ret = tcc_parse_args(s, &argc, &argv, 0);
2225     dynarray_reset(&argv, &argc);
2226     return ret < 0 ? ret : 0;
2227 }
2228
2229 PUB_FUNC void tcc_print_stats(TCCState *s1, unsigned total_time)
2230 {
2231     if (!total_time)
2232         total_time = 1;
2233     fprintf(stderr, "# %d idents, %d lines, %u bytes\n"
2234                     "# %0.3f s, %u lines/s, %0.1f MB/s\n",
2235            total_idents, total_lines, total_bytes,
2236            (double)total_time/1000,
2237            (unsigned)total_lines*1000/total_time,
2238            (double)total_bytes/1000/total_time);
2239     fprintf(stderr, "# text %u, data.rw %u, data.ro %u, bss %u bytes\n",
2240            s1->total_output[0],
2241            s1->total_output[1],
2242            s1->total_output[2],
2243            s1->total_output[3]
2244            );
2245 #ifdef MEM_DEBUG
2246     fprintf(stderr, "# %d bytes memory used\n", mem_max_size);
2247 #endif
2248 }