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
 508 #endif /* MEM_DEBUG */
 509
 510 #ifdef _WIN32
 511 # define realpath(file, buf) _fullpath(buf, file, 260)
 512 #endif
 513
 514 /* for #pragma once */
 515 ST_FUNC int normalized_PATHCMP(const char *f1, const char *f2)
 516 {
 517     char *p1, *p2;
 518     int ret = 1;
 519     if (!!(p1 = realpath(f1, NULL))) {
 520         if (!!(p2 = realpath(f2, NULL))) {
 521             ret = PATHCMP(p1, p2);
 522             free(p2); /* using original free */
 523         }
 524         free(p1);
 525     }
 526     return ret;
 527 }
 528
 529 #define free(p) use_tcc_free(p)
 530 #define malloc(s) use_tcc_malloc(s)
 531 #define realloc(p, s) use_tcc_realloc(p, s)
 532
 533 /********************************************************/
 534 /* dynarrays */
 535
 536 ST_FUNC void dynarray_add(void *ptab, int *nb_ptr, void *data)
 537 {
 538     int nb, nb_alloc;
 539     void **pp;
 540
 541     nb = *nb_ptr;
 542     pp = *(void ***)ptab;
 543     /* every power of two we double array size */
 544     if ((nb & (nb - 1)) == 0) {
 545         if (!nb)
 546             nb_alloc = 1;
 547         else
 548             nb_alloc = nb * 2;
 549         pp = tcc_realloc(pp, nb_alloc * sizeof(void *));
 550         *(void***)ptab = pp;
 551     }
 552     pp[nb++] = data;
 553     *nb_ptr = nb;
 554 }
 555
 556 ST_FUNC void dynarray_reset(void *pp, int *n)
 557 {
 558     void **p;
 559     for (p = *(void***)pp; *n; ++p, --*n)
 560         if (*p)
 561             tcc_free(*p);
 562     tcc_free(*(void**)pp);
 563     *(void**)pp = NULL;
 564 }
 565
 566 static void tcc_split_path(TCCState *s, void *p_ary, int *p_nb_ary, const char *in)
 567 {
 568     const char *p;
 569     do {
 570         int c;
 571         CString str;
 572
 573         cstr_new(&str);
 574         for (p = in; c = *p, c != '\0' && c != PATHSEP[0]; ++p) {
 575             if (c == '{' && p[1] && p[2] == '}') {
 576                 c = p[1], p += 2;
 577                 if (c == 'B')
 578                     cstr_cat(&str, s->tcc_lib_path, -1);
 579                 if (c == 'R')
 580                     cstr_cat(&str, CONFIG_SYSROOT, -1);
 581                 if (c == 'f' && file) {
 582                     /* substitute current file's dir */
 583                     const char *f = file->true_filename;
 584                     const char *b = tcc_basename(f);
 585                     if (b > f)
 586                         cstr_cat(&str, f, b - f - 1);
 587                     else
 588                         cstr_cat(&str, ".", 1);
 589                 }
 590             } else {
 591                 cstr_ccat(&str, c);
 592             }
 593         }
 594         if (str.size) {
 595             cstr_ccat(&str, '\0');
 596             dynarray_add(p_ary, p_nb_ary, tcc_strdup(str.data));
 597         }
 598         cstr_free(&str);
 599         in = p+1;
 600     } while (*p);
 601 }
 602
 603 /********************************************************/
 604 /* warning / error */
 605
 606 /* warn_... option bits */
 607 #define WARN_ON  1 /* warning is on (-Woption) */
 608 #define WARN_ERR 2 /* warning is an error (-Werror=option) */
 609 #define WARN_NOE 4 /* warning is not an error (-Wno-error=option) */
 610
 611 /* error1() modes */
 612 enum { ERROR_WARN, ERROR_NOABORT, ERROR_ERROR };
 613
 614 static void error1(int mode, const char *fmt, va_list ap)
 615 {
 616     BufferedFile **pf, *f;
 617     TCCState *s1 = tcc_state;
 618     CString cs;
 619
 620     tcc_exit_state(s1);
 621
 622     if (mode == ERROR_WARN) {
 623         if (s1->warn_error)
 624             mode = ERROR_ERROR;
 625         if (s1->warn_num) {
 626             /* handle tcc_warning_c(warn_option)(fmt, ...) */
 627             int wopt = *(&s1->warn_none + s1->warn_num);
 628             s1->warn_num = 0;
 629             if (0 == (wopt & WARN_ON))
 630                 return;
 631             if (wopt & WARN_ERR)
 632                 mode = ERROR_ERROR;
 633             if (wopt & WARN_NOE)
 634                 mode = ERROR_WARN;
 635         }
 636         if (s1->warn_none)
 637             return;
 638     }
 639
 640     cstr_new(&cs);
 641     f = NULL;
 642     if (s1->error_set_jmp_enabled) { /* we're called while parsing a file */
 643         /* use upper file if inline ":asm:" or token ":paste:" */
 644         for (f = file; f && f->filename[0] == ':'; f = f->prev)
 645             ;
 646     }
 647     if (f) {
 648         for(pf = s1->include_stack; pf < s1->include_stack_ptr; pf++)
 649             cstr_printf(&cs, "In file included from %s:%d:\n",
 650                 (*pf)->filename, (*pf)->line_num - 1);
 651         cstr_printf(&cs, "%s:%d: ",
 652             f->filename, f->line_num - !!(tok_flags & TOK_FLAG_BOL));
 653     } else if (s1->current_filename) {
 654         cstr_printf(&cs, "%s: ", s1->current_filename);
 655     }
 656     if (0 == cs.size)
 657         cstr_printf(&cs, "tcc: ");
 658     cstr_printf(&cs, mode == ERROR_WARN ? "warning: " : "error: ");
 659     cstr_vprintf(&cs, fmt, ap);
 660     if (!s1 || !s1->error_func) {
 661         /* default case: stderr */
 662         if (s1 && s1->output_type == TCC_OUTPUT_PREPROCESS && s1->ppfp == stdout)
 663             printf("\n"); /* print a newline during tcc -E */
 664         fflush(stdout); /* flush -v output */
 665         fprintf(stderr, "%s\n", (char*)cs.data);
 666         fflush(stderr); /* print error/warning now (win32) */
 667     } else {
 668         s1->error_func(s1->error_opaque, (char*)cs.data);
 669     }
 670     cstr_free(&cs);
 671     if (mode != ERROR_WARN)
 672         s1->nb_errors++;
 673     if (mode == ERROR_ERROR && s1->error_set_jmp_enabled) {
 674         while (nb_stk_data)
 675             tcc_free(*(void**)stk_data[--nb_stk_data]);
 676         longjmp(s1->error_jmp_buf, 1);
 677     }
 678 }
 679
 680 LIBTCCAPI void tcc_set_error_func(TCCState *s, void *error_opaque, TCCErrorFunc error_func)
 681 {
 682     s->error_opaque = error_opaque;
 683     s->error_func = error_func;
 684 }
 685
 686 LIBTCCAPI TCCErrorFunc tcc_get_error_func(TCCState *s)
 687 {
 688     return s->error_func;
 689 }
 690
 691 LIBTCCAPI void *tcc_get_error_opaque(TCCState *s)
 692 {
 693     return s->error_opaque;
 694 }
 695
 696 /* error without aborting current compilation */
 697 PUB_FUNC int _tcc_error_noabort(const char *fmt, ...)
 698 {
 699     va_list ap;
 700     va_start(ap, fmt);
 701     error1(ERROR_NOABORT, fmt, ap);
 702     va_end(ap);
 703     return -1;
 704 }
 705
 706 #undef _tcc_error
 707 PUB_FUNC void _tcc_error(const char *fmt, ...)
 708 {
 709     va_list ap;
 710     va_start(ap, fmt);
 711     error1(ERROR_ERROR, fmt, ap);
 712     exit(1);
 713 }
 714 #define _tcc_error use_tcc_error_noabort
 715
 716 PUB_FUNC void _tcc_warning(const char *fmt, ...)
 717 {
 718     va_list ap;
 719     va_start(ap, fmt);
 720     error1(ERROR_WARN, fmt, ap);
 721     va_end(ap);
 722 }
 723
 724
 725 /********************************************************/
 726 /* I/O layer */
 727
 728 ST_FUNC void tcc_open_bf(TCCState *s1, const char *filename, int initlen)
 729 {
 730     BufferedFile *bf;
 731     int buflen = initlen ? initlen : IO_BUF_SIZE;
 732
 733     bf = tcc_mallocz(sizeof(BufferedFile) + buflen);
 734     bf->buf_ptr = bf->buffer;
 735     bf->buf_end = bf->buffer + initlen;
 736     bf->buf_end[0] = CH_EOB; /* put eob symbol */
 737     pstrcpy(bf->filename, sizeof(bf->filename), filename);
 738 #ifdef _WIN32
 739     normalize_slashes(bf->filename);
 740 #endif
 741     bf->true_filename = bf->filename;
 742     bf->line_num = 1;
 743     bf->ifdef_stack_ptr = s1->ifdef_stack_ptr;
 744     bf->fd = -1;
 745     bf->prev = file;
 746     file = bf;
 747     tok_flags = TOK_FLAG_BOL | TOK_FLAG_BOF;
 748 }
 749
 750 ST_FUNC void tcc_close(void)
 751 {
 752     TCCState *s1 = tcc_state;
 753     BufferedFile *bf = file;
 754     if (bf->fd > 0) {
 755         close(bf->fd);
 756         total_lines += bf->line_num - 1;
 757     }
 758     if (bf->true_filename != bf->filename)
 759         tcc_free(bf->true_filename);
 760     file = bf->prev;
 761     tcc_free(bf);
 762 }
 763
 764 static int _tcc_open(TCCState *s1, const char *filename)
 765 {
 766     int fd;
 767     if (strcmp(filename, "-") == 0)
 768         fd = 0, filename = "<stdin>";
 769     else
 770         fd = open(filename, O_RDONLY | O_BINARY);
 771     if ((s1->verbose == 2 && fd >= 0) || s1->verbose == 3)
 772         printf("%s %*s%s\n", fd < 0 ? "nf":"->",
 773                (int)(s1->include_stack_ptr - s1->include_stack), "", filename);
 774     return fd;
 775 }
 776
 777 ST_FUNC int tcc_open(TCCState *s1, const char *filename)
 778 {
 779     int fd = _tcc_open(s1, filename);
 780     if (fd < 0)
 781         return -1;
 782     tcc_open_bf(s1, filename, 0);
 783     file->fd = fd;
 784     return 0;
 785 }
 786
 787 /* compile the file opened in 'file'. Return non zero if errors. */
 788 static int tcc_compile(TCCState *s1, int filetype, const char *str, int fd)
 789 {
 790     /* Here we enter the code section where we use the global variables for
 791        parsing and code generation (tccpp.c, tccgen.c, <target>-gen.c).
 792        Other threads need to wait until we're done.
 793
 794        Alternatively we could use thread local storage for those global
 795        variables, which may or may not have advantages */
 796
 797     tcc_enter_state(s1);
 798     s1->error_set_jmp_enabled = 1;
 799
 800     if (setjmp(s1->error_jmp_buf) == 0) {
 801         s1->nb_errors = 0;
 802
 803         if (fd == -1) {
 804             int len = strlen(str);
 805             tcc_open_bf(s1, "<string>", len);
 806             memcpy(file->buffer, str, len);
 807         } else {
 808             tcc_open_bf(s1, str, 0);
 809             file->fd = fd;
 810         }
 811
 812         preprocess_start(s1, filetype);
 813         tccgen_init(s1);
 814
 815         if (s1->output_type == TCC_OUTPUT_PREPROCESS) {
 816             tcc_preprocess(s1);
 817         } else {
 818             tccelf_begin_file(s1);
 819             if (filetype & (AFF_TYPE_ASM | AFF_TYPE_ASMPP)) {
 820                 tcc_assemble(s1, !!(filetype & AFF_TYPE_ASMPP));
 821             } else {
 822                 tccgen_compile(s1);
 823             }
 824             tccelf_end_file(s1);
 825         }
 826     }
 827     tccgen_finish(s1);
 828     preprocess_end(s1);
 829     s1->error_set_jmp_enabled = 0;
 830     tcc_exit_state(s1);
 831     return s1->nb_errors != 0 ? -1 : 0;
 832 }
 833
 834 LIBTCCAPI int tcc_compile_string(TCCState *s, const char *str)
 835 {
 836     return tcc_compile(s, s->filetype, str, -1);
 837 }
 838
 839 /* define a preprocessor symbol. value can be NULL, sym can be "sym=val" */
 840 LIBTCCAPI void tcc_define_symbol(TCCState *s1, const char *sym, const char *value)
 841 {
 842     const char *eq;
 843     if (NULL == (eq = strchr(sym, '=')))
 844         eq = strchr(sym, 0);
 845     if (NULL == value)
 846         value = *eq ? eq + 1 : "1";
 847     cstr_printf(&s1->cmdline_defs, "#define %.*s %s\n", (int)(eq-sym), sym, value);
 848 }
 849
 850 /* undefine a preprocessor symbol */
 851 LIBTCCAPI void tcc_undefine_symbol(TCCState *s1, const char *sym)
 852 {
 853     cstr_printf(&s1->cmdline_defs, "#undef %s\n", sym);
 854 }
 855
 856
 857 LIBTCCAPI TCCState *tcc_new(void)
 858 {
 859     TCCState *s;
 860
 861     s = tcc_mallocz(sizeof(TCCState));
 862     if (!s)
 863         return NULL;
 864 #ifdef MEM_DEBUG
 865     tcc_memcheck(1);
 866 #endif
 867
 868 #undef gnu_ext
 869
 870     s->gnu_ext = 1;
 871     s->tcc_ext = 1;
 872     s->nocommon = 1;
 873     s->dollars_in_identifiers = 1; /*on by default like in gcc/clang*/
 874     s->cversion = 199901; /* default unless -std=c11 is supplied */
 875     s->warn_implicit_function_declaration = 1;
 876     s->warn_discarded_qualifiers = 1;
 877     s->ms_extensions = 1;
 878
 879 #ifdef CHAR_IS_UNSIGNED
 880     s->char_is_unsigned = 1;
 881 #endif
 882 #ifdef TCC_TARGET_I386
 883     s->seg_size = 32;
 884 #endif
 885     /* enable this if you want symbols with leading underscore on windows: */
 886 #if defined TCC_TARGET_MACHO /* || defined TCC_TARGET_PE */
 887     s->leading_underscore = 1;
 888 #endif
 889 #ifdef TCC_TARGET_ARM
 890     s->float_abi = ARM_FLOAT_ABI;
 891 #endif
 892 #ifdef CONFIG_NEW_DTAGS
 893     s->enable_new_dtags = 1;
 894 #endif
 895     s->ppfp = stdout;
 896     /* might be used in error() before preprocess_start() */
 897     s->include_stack_ptr = s->include_stack;
 898
 899     tcc_set_lib_path(s, CONFIG_TCCDIR);
 900     return s;
 901 }
 902
 903 LIBTCCAPI void tcc_delete(TCCState *s1)
 904 {
 905     /* free sections */
 906     tccelf_delete(s1);
 907
 908     /* free library paths */
 909     dynarray_reset(&s1->library_paths, &s1->nb_library_paths);
 910     dynarray_reset(&s1->crt_paths, &s1->nb_crt_paths);
 911
 912     /* free include paths */
 913     dynarray_reset(&s1->include_paths, &s1->nb_include_paths);
 914     dynarray_reset(&s1->sysinclude_paths, &s1->nb_sysinclude_paths);
 915
 916     tcc_free(s1->tcc_lib_path);
 917     tcc_free(s1->soname);
 918     tcc_free(s1->rpath);
 919     tcc_free(s1->elf_entryname);
 920     tcc_free(s1->init_symbol);
 921     tcc_free(s1->fini_symbol);
 922     tcc_free(s1->mapfile);
 923     tcc_free(s1->outfile);
 924     tcc_free(s1->deps_outfile);
 925 #if defined TCC_TARGET_MACHO
 926     tcc_free(s1->install_name);
 927 #endif
 928     dynarray_reset(&s1->files, &s1->nb_files);
 929     dynarray_reset(&s1->target_deps, &s1->nb_target_deps);
 930     dynarray_reset(&s1->pragma_libs, &s1->nb_pragma_libs);
 931     dynarray_reset(&s1->argv, &s1->argc);
 932     cstr_free(&s1->cmdline_defs);
 933     cstr_free(&s1->cmdline_incl);
 934     cstr_free(&s1->linker_arg);
 935 #ifdef TCC_IS_NATIVE
 936     /* free runtime memory */
 937     tcc_run_free(s1);
 938 #endif
 939     tcc_free(s1->dState);
 940     tcc_free(s1);
 941 #ifdef MEM_DEBUG
 942     tcc_memcheck(-1);
 943 #endif
 944 }
 945
 946 LIBTCCAPI int tcc_set_output_type(TCCState *s, int output_type)
 947 {
 948 #ifdef CONFIG_TCC_PIE
 949     if (output_type == TCC_OUTPUT_EXE)
 950         output_type |= TCC_OUTPUT_DYN;
 951 #endif
 952     s->output_type = output_type;
 953
 954     if (!s->nostdinc) {
 955         /* default include paths */
 956         /* -isystem paths have already been handled */
 957         tcc_add_sysinclude_path(s, CONFIG_TCC_SYSINCLUDEPATHS);
 958     }
 959
 960     if (output_type == TCC_OUTPUT_PREPROCESS) {
 961         s->do_debug = 0;
 962         return 0;
 963     }
 964
 965     tccelf_new(s);
 966     if (s->do_debug) {
 967         /* add debug sections */
 968         tcc_debug_new(s);
 969     }
 970 #ifdef CONFIG_TCC_BCHECK
 971     if (s->do_bounds_check) {
 972         /* if bound checking, then add corresponding sections */
 973         tccelf_bounds_new(s);
 974     }
 975 #endif
 976
 977     if (output_type == TCC_OUTPUT_OBJ) {
 978         /* always elf for objects */
 979         s->output_format = TCC_OUTPUT_FORMAT_ELF;
 980         return 0;
 981     }
 982
 983     tcc_add_library_path(s, CONFIG_TCC_LIBPATHS);
 984
 985 #ifdef TCC_TARGET_PE
 986 # ifdef _WIN32
 987     /* allow linking with system dll's directly */
 988     tcc_add_systemdir(s);
 989 # endif
 990     /* target PE has its own startup code in libtcc1.a */
 991     return 0;
 992
 993 #elif defined TCC_TARGET_MACHO
 994 # ifdef TCC_IS_NATIVE
 995     tcc_add_macos_sdkpath(s);
 996 # endif
 997     /* Mach-O with LC_MAIN doesn't need any crt startup code.  */
 998     return 0;
 999
1000 #else
1001     /* paths for crt objects */
1002     tcc_split_path(s, &s->crt_paths, &s->nb_crt_paths, CONFIG_TCC_CRTPREFIX);
1003
1004     /* add libc crt1/crti objects */
1005     if (output_type != TCC_OUTPUT_MEMORY && !s->nostdlib) {
1006 #if TARGETOS_OpenBSD
1007         if (output_type != TCC_OUTPUT_DLL)
1008             tcc_add_crt(s, "crt0.o");
1009         if (output_type == TCC_OUTPUT_DLL)
1010             tcc_add_crt(s, "crtbeginS.o");
1011         else
1012             tcc_add_crt(s, "crtbegin.o");
1013 #elif TARGETOS_FreeBSD
1014         if (output_type != TCC_OUTPUT_DLL)
1015             tcc_add_crt(s, "crt1.o");
1016         tcc_add_crt(s, "crti.o");
1017         if (s->static_link)
1018             tcc_add_crt(s, "crtbeginT.o");
1019         else if (output_type & TCC_OUTPUT_DYN)
1020             tcc_add_crt(s, "crtbeginS.o");
1021         else
1022             tcc_add_crt(s, "crtbegin.o");
1023 #elif TARGETOS_NetBSD
1024         if (output_type != TCC_OUTPUT_DLL)
1025             tcc_add_crt(s, "crt0.o");
1026         tcc_add_crt(s, "crti.o");
1027         if (s->static_link)
1028             tcc_add_crt(s, "crtbeginT.o");
1029         else if (output_type & TCC_OUTPUT_DYN)
1030             tcc_add_crt(s, "crtbeginS.o");
1031         else
1032             tcc_add_crt(s, "crtbegin.o");
1033 #elif defined TARGETOS_ANDROID
1034         if (output_type != TCC_OUTPUT_DLL)
1035             tcc_add_crt(s, "crtbegin_dynamic.o");
1036         else
1037             tcc_add_crt(s, "crtbegin_so.o");
1038 #else
1039         if (output_type != TCC_OUTPUT_DLL)
1040             tcc_add_crt(s, "crt1.o");
1041         tcc_add_crt(s, "crti.o");
1042 #endif
1043     }
1044     return 0;
1045 #endif
1046 }
1047
1048 LIBTCCAPI int tcc_add_include_path(TCCState *s, const char *pathname)
1049 {
1050     tcc_split_path(s, &s->include_paths, &s->nb_include_paths, pathname);
1051     return 0;
1052 }
1053
1054 LIBTCCAPI int tcc_add_sysinclude_path(TCCState *s, const char *pathname)
1055 {
1056     tcc_split_path(s, &s->sysinclude_paths, &s->nb_sysinclude_paths, pathname);
1057     return 0;
1058 }
1059
1060 /* add/update a 'DLLReference', Just find if level == -1  */
1061 ST_FUNC DLLReference *tcc_add_dllref(TCCState *s1, const char *dllname, int level)
1062 {
1063     DLLReference *ref = NULL;
1064     int i;
1065     for (i = 0; i < s1->nb_loaded_dlls; i++)
1066         if (0 == strcmp(s1->loaded_dlls[i]->name, dllname)) {
1067             ref = s1->loaded_dlls[i];
1068             break;
1069         }
1070     if (level == -1)
1071         return ref;
1072     if (ref) {
1073         if (level < ref->level)
1074             ref->level = level;
1075         ref->found = 1;
1076         return ref;
1077     }
1078     ref = tcc_mallocz(sizeof(DLLReference) + strlen(dllname));
1079     strcpy(ref->name, dllname);
1080     dynarray_add(&s1->loaded_dlls, &s1->nb_loaded_dlls, ref);
1081     ref->level = level;
1082     ref->index = s1->nb_loaded_dlls;
1083     return ref;
1084 }
1085
1086 /* OpenBSD: choose latest from libxxx.so.x.y versions */
1087 #if defined TARGETOS_OpenBSD && !defined _WIN32
1088 #include <glob.h>
1089 static int tcc_glob_so(TCCState *s1, const char *pattern, char *buf, int size)
1090 {
1091     const char *star;
1092     glob_t g;
1093     char *p;
1094     int i, v, v1, v2, v3;
1095
1096     star = strchr(pattern, '*');
1097     if (!star || glob(pattern, 0, NULL, &g))
1098         return -1;
1099     for (v = -1, i = 0; i < g.gl_pathc; ++i) {
1100         p = g.gl_pathv[i];
1101         if (2 != sscanf(p + (star - pattern), "%d.%d.%d", &v1, &v2, &v3))
1102             continue;
1103         if ((v1 = v1 * 1000 + v2) > v)
1104             v = v1, pstrcpy(buf, size, p);
1105     }
1106     globfree(&g);
1107     return v;
1108 }
1109 #endif
1110
1111 ST_FUNC int tcc_add_file_internal(TCCState *s1, const char *filename, int flags)
1112 {
1113     int fd, ret = -1;
1114
1115 #if defined TARGETOS_OpenBSD && !defined _WIN32
1116     char buf[1024];
1117     if (tcc_glob_so(s1, filename, buf, sizeof buf) >= 0)
1118         filename = buf;
1119 #endif
1120
1121     /* ignore binary files with -E */
1122     if (s1->output_type == TCC_OUTPUT_PREPROCESS
1123         && (flags & AFF_TYPE_BIN))
1124         return 0;
1125
1126     /* open the file */
1127     fd = _tcc_open(s1, filename);
1128     if (fd < 0) {
1129         if (flags & AFF_PRINT_ERROR)
1130             tcc_error_noabort("file '%s' not found", filename);
1131         return ret;
1132     }
1133
1134     s1->current_filename = filename;
1135     if (flags & AFF_TYPE_BIN) {
1136         ElfW(Ehdr) ehdr;
1137         int obj_type;
1138
1139         obj_type = tcc_object_type(fd, &ehdr);
1140         lseek(fd, 0, SEEK_SET);
1141
1142         switch (obj_type) {
1143
1144         case AFF_BINTYPE_REL:
1145             ret = tcc_load_object_file(s1, fd, 0);
1146             break;
1147
1148         case AFF_BINTYPE_AR:
1149             ret = tcc_load_archive(s1, fd, !(flags & AFF_WHOLE_ARCHIVE));
1150             break;
1151
1152 #ifdef TCC_TARGET_PE
1153         default:
1154             ret = pe_load_file(s1, fd, filename);
1155             goto check_success;
1156
1157 #elif defined TCC_TARGET_MACHO
1158         case AFF_BINTYPE_DYN:
1159         case_dyn_or_tbd:
1160             if (s1->output_type == TCC_OUTPUT_MEMORY) {
1161 #ifdef TCC_IS_NATIVE
1162                 void* dl;
1163                 const char* soname = filename;
1164                 if (obj_type != AFF_BINTYPE_DYN)
1165                     soname = macho_tbd_soname(filename);
1166                 dl = dlopen(soname, RTLD_GLOBAL | RTLD_LAZY);
1167                 if (dl)
1168                     tcc_add_dllref(s1, soname, 0)->handle = dl, ret = 0;
1169                 if (filename != soname)
1170                     tcc_free((void *)soname);
1171 #endif
1172             } else if (obj_type == AFF_BINTYPE_DYN) {
1173                 ret = macho_load_dll(s1, fd, filename, (flags & AFF_REFERENCED_DLL) != 0);
1174             } else {
1175                 ret = macho_load_tbd(s1, fd, filename, (flags & AFF_REFERENCED_DLL) != 0);
1176             }
1177             break;
1178         default:
1179         {
1180             const char *ext = tcc_fileextension(filename);
1181             if (!strcmp(ext, ".tbd"))
1182                 goto case_dyn_or_tbd;
1183             if (!strcmp(ext, ".dylib")) {
1184                 obj_type = AFF_BINTYPE_DYN;
1185                 goto case_dyn_or_tbd;
1186             }
1187             goto check_success;
1188         }
1189
1190 #else /* unix */
1191         case AFF_BINTYPE_DYN:
1192             if (s1->output_type == TCC_OUTPUT_MEMORY) {
1193 #ifdef TCC_IS_NATIVE
1194                 void* dl = dlopen(filename, RTLD_GLOBAL | RTLD_LAZY);
1195                 if (dl)
1196                     tcc_add_dllref(s1, filename, 0)->handle = dl, ret = 0;
1197 #endif
1198             } else
1199                 ret = tcc_load_dll(s1, fd, filename, (flags & AFF_REFERENCED_DLL) != 0);
1200             break;
1201
1202         default:
1203             /* as GNU ld, consider it is an ld script if not recognized */
1204             ret = tcc_load_ldscript(s1, fd);
1205             goto check_success;
1206
1207 #endif /* pe / macos / unix */
1208
1209 check_success:
1210             if (ret < 0)
1211                 tcc_error_noabort("%s: unrecognized file type", filename);
1212             break;
1213
1214 #ifdef TCC_TARGET_COFF
1215         case AFF_BINTYPE_C67:
1216             ret = tcc_load_coff(s1, fd);
1217             break;
1218 #endif
1219         }
1220         close(fd);
1221     } else {
1222         /* update target deps */
1223         dynarray_add(&s1->target_deps, &s1->nb_target_deps, tcc_strdup(filename));
1224         ret = tcc_compile(s1, flags, filename, fd);
1225     }
1226     s1->current_filename = NULL;
1227     return ret;
1228 }
1229
1230 LIBTCCAPI int tcc_add_file(TCCState *s, const char *filename)
1231 {
1232     int filetype = s->filetype;
1233     if (0 == (filetype & AFF_TYPE_MASK)) {
1234         /* use a file extension to detect a filetype */
1235         const char *ext = tcc_fileextension(filename);
1236         if (ext[0]) {
1237             ext++;
1238             if (!strcmp(ext, "S"))
1239                 filetype = AFF_TYPE_ASMPP;
1240             else if (!strcmp(ext, "s"))
1241                 filetype = AFF_TYPE_ASM;
1242             else if (!PATHCMP(ext, "c")
1243                      || !PATHCMP(ext, "h")
1244                      || !PATHCMP(ext, "i"))
1245                 filetype = AFF_TYPE_C;
1246             else
1247                 filetype |= AFF_TYPE_BIN;
1248         } else {
1249             filetype = AFF_TYPE_C;
1250         }
1251     }
1252     return tcc_add_file_internal(s, filename, filetype | AFF_PRINT_ERROR);
1253 }
1254
1255 LIBTCCAPI int tcc_add_library_path(TCCState *s, const char *pathname)
1256 {
1257     tcc_split_path(s, &s->library_paths, &s->nb_library_paths, pathname);
1258     return 0;
1259 }
1260
1261 static int tcc_add_library_internal(TCCState *s, const char *fmt,
1262     const char *filename, int flags, char **paths, int nb_paths)
1263 {
1264     char buf[1024];
1265     int i;
1266
1267     for(i = 0; i < nb_paths; i++) {
1268         snprintf(buf, sizeof(buf), fmt, paths[i], filename);
1269         if (tcc_add_file_internal(s, buf, flags | AFF_TYPE_BIN) == 0)
1270             return 0;
1271     }
1272     return -1;
1273 }
1274
1275 /* find and load a dll. Return non zero if not found */
1276 ST_FUNC int tcc_add_dll(TCCState *s, const char *filename, int flags)
1277 {
1278     return tcc_add_library_internal(s, "%s/%s", filename, flags,
1279         s->library_paths, s->nb_library_paths);
1280 }
1281
1282 /* find [cross-]libtcc1.a and tcc helper objects in library path */
1283 ST_FUNC void tcc_add_support(TCCState *s1, const char *filename)
1284 {
1285     char buf[100];
1286     if (CONFIG_TCC_CROSSPREFIX[0])
1287         filename = strcat(strcpy(buf, CONFIG_TCC_CROSSPREFIX), filename);
1288     if (tcc_add_dll(s1, filename, 0) < 0)
1289         tcc_error_noabort("%s not found", filename);
1290 }
1291
1292 #if !defined TCC_TARGET_PE && !defined TCC_TARGET_MACHO
1293 ST_FUNC int tcc_add_crt(TCCState *s1, const char *filename)
1294 {
1295     if (-1 == tcc_add_library_internal(s1, "%s/%s",
1296         filename, 0, s1->crt_paths, s1->nb_crt_paths))
1297         return tcc_error_noabort("file '%s' not found", filename);
1298     return 0;
1299 }
1300 #endif
1301
1302 /* the library name is the same as the argument of the '-l' option */
1303 LIBTCCAPI int tcc_add_library(TCCState *s, const char *libraryname)
1304 {
1305 #if defined TCC_TARGET_PE
1306     static const char * const libs[] = { "%s/%s.def", "%s/lib%s.def", "%s/%s.dll", "%s/lib%s.dll", "%s/lib%s.a", NULL };
1307     const char * const *pp = s->static_link ? libs + 4 : libs;
1308 #elif defined TCC_TARGET_MACHO
1309     static const char * const libs[] = { "%s/lib%s.dylib", "%s/lib%s.tbd", "%s/lib%s.a", NULL };
1310     const char * const *pp = s->static_link ? libs + 2 : libs;
1311 #elif defined TARGETOS_OpenBSD
1312     static const char * const libs[] = { "%s/lib%s.so.*", "%s/lib%s.a", NULL };
1313     const char * const *pp = s->static_link ? libs + 1 : libs;
1314 #else
1315     static const char * const libs[] = { "%s/lib%s.so", "%s/lib%s.a", NULL };
1316     const char * const *pp = s->static_link ? libs + 1 : libs;
1317 #endif
1318     int flags = s->filetype & AFF_WHOLE_ARCHIVE;
1319     while (*pp) {
1320         if (0 == tcc_add_library_internal(s, *pp,
1321             libraryname, flags, s->library_paths, s->nb_library_paths))
1322             return 0;
1323         ++pp;
1324     }
1325     return -1;
1326 }
1327
1328 PUB_FUNC int tcc_add_library_err(TCCState *s1, const char *libname)
1329 {
1330     int ret = tcc_add_library(s1, libname);
1331     if (ret < 0)
1332         tcc_error_noabort("library '%s' not found", libname);
1333     return ret;
1334 }
1335
1336 /* handle #pragma comment(lib,) */
1337 ST_FUNC void tcc_add_pragma_libs(TCCState *s1)
1338 {
1339     int i;
1340     for (i = 0; i < s1->nb_pragma_libs; i++)
1341         tcc_add_library_err(s1, s1->pragma_libs[i]);
1342 }
1343
1344 LIBTCCAPI int tcc_add_symbol(TCCState *s1, const char *name, const void *val)
1345 {
1346 #ifdef TCC_TARGET_PE
1347     /* On x86_64 'val' might not be reachable with a 32bit offset.
1348        So it is handled here as if it were in a DLL. */
1349     pe_putimport(s1, 0, name, (uintptr_t)val);
1350 #else
1351     char buf[256];
1352     if (s1->leading_underscore) {
1353         buf[0] = '_';
1354         pstrcpy(buf + 1, sizeof(buf) - 1, name);
1355         name = buf;
1356     }
1357     set_global_sym(s1, name, NULL, (addr_t)(uintptr_t)val); /* NULL: SHN_ABS */
1358 #endif
1359     return 0;
1360 }
1361
1362 LIBTCCAPI void tcc_set_lib_path(TCCState *s, const char *path)
1363 {
1364     tcc_free(s->tcc_lib_path);
1365     s->tcc_lib_path = tcc_strdup(path);
1366 }
1367
1368 /********************************************************/
1369 /* options parser */
1370
1371 static int strstart(const char *val, const char **str)
1372 {
1373     const char *p, *q;
1374     p = *str;
1375     q = val;
1376     while (*q) {
1377         if (*p != *q)
1378             return 0;
1379         p++;
1380         q++;
1381     }
1382     *str = p;
1383     return 1;
1384 }
1385
1386 /* Like strstart, but automatically takes into account that ld options can
1387  *
1388  * - start with double or single dash (e.g. '--soname' or '-soname')
1389  * - arguments can be given as separate or after '=' (e.g. '-Wl,-soname,x.so'
1390  *   or '-Wl,-soname=x.so')
1391  *
1392  * you provide `val` always in 'option[=]' form (no leading -)
1393  */
1394 static int link_option(const char *str, const char *val, const char **ptr)
1395 {
1396     const char *p, *q;
1397     int ret;
1398
1399     /* there should be 1 or 2 dashes */
1400     if (*str++ != '-')
1401         return 0;
1402     if (*str == '-')
1403         str++;
1404
1405     /* then str & val should match (potentially up to '=') */
1406     p = str;
1407     q = val;
1408
1409     ret = 1;
1410     if (q[0] == '?') {
1411         ++q;
1412         if (strstart("no-", &p))
1413             ret = -1;
1414     }
1415
1416     while (*q != '\0' && *q != '=') {
1417         if (*p != *q)
1418             return 0;
1419         p++;
1420         q++;
1421     }
1422
1423     /* '=' near eos means ',' or '=' is ok */
1424     if (*q == '=') {
1425         if (*p == 0)
1426             *ptr = p;
1427         if (*p != ',' && *p != '=')
1428             return 0;
1429         p++;
1430     } else if (*p) {
1431         return 0;
1432     }
1433     *ptr = p;
1434     return ret;
1435 }
1436
1437 static const char *skip_linker_arg(const char **str)
1438 {
1439     const char *s1 = *str;
1440     const char *s2 = strchr(s1, ',');
1441     *str = s2 ? s2++ : (s2 = s1 + strlen(s1));
1442     return s2;
1443 }
1444
1445 static void copy_linker_arg(char **pp, const char *s, int sep)
1446 {
1447     const char *q = s;
1448     char *p = *pp;
1449     int l = 0;
1450     if (p && sep)
1451         p[l = strlen(p)] = sep, ++l;
1452     skip_linker_arg(&q);
1453     pstrncpy(l + (*pp = tcc_realloc(p, q - s + l + 1)), s, q - s);
1454 }
1455
1456 static void args_parser_add_file(TCCState *s, const char* filename, int filetype)
1457 {
1458     struct filespec *f = tcc_malloc(sizeof *f + strlen(filename));
1459     f->type = filetype;
1460     strcpy(f->name, filename);
1461     dynarray_add(&s->files, &s->nb_files, f);
1462 }
1463
1464 /* set linker options */
1465 static int tcc_set_linker(TCCState *s, const char *option)
1466 {
1467     TCCState *s1 = s;
1468     while (*option) {
1469
1470         const char *p = NULL;
1471         char *end = NULL;
1472         int ignoring = 0;
1473         int ret;
1474
1475         if (link_option(option, "Bsymbolic", &p)) {
1476             s->symbolic = 1;
1477         } else if (link_option(option, "nostdlib", &p)) {
1478             s->nostdlib = 1;
1479         } else if (link_option(option, "e=", &p)
1480                ||  link_option(option, "entry=", &p)) {
1481             copy_linker_arg(&s->elf_entryname, p, 0);
1482         } else if (link_option(option, "fini=", &p)) {
1483             copy_linker_arg(&s->fini_symbol, p, 0);
1484             ignoring = 1;
1485         } else if (link_option(option, "image-base=", &p)
1486                 || link_option(option, "Ttext=", &p)) {
1487             s->text_addr = strtoull(p, &end, 16);
1488             s->has_text_addr = 1;
1489         } else if (link_option(option, "init=", &p)) {
1490             copy_linker_arg(&s->init_symbol, p, 0);
1491             ignoring = 1;
1492         } else if (link_option(option, "Map=", &p)) {
1493             copy_linker_arg(&s->mapfile, p, 0);
1494             ignoring = 1;
1495         } else if (link_option(option, "oformat=", &p)) {
1496 #if defined(TCC_TARGET_PE)
1497             if (strstart("pe-", &p)) {
1498 #elif PTR_SIZE == 8
1499             if (strstart("elf64-", &p)) {
1500 #else
1501             if (strstart("elf32-", &p)) {
1502 #endif
1503                 s->output_format = TCC_OUTPUT_FORMAT_ELF;
1504             } else if (!strcmp(p, "binary")) {
1505                 s->output_format = TCC_OUTPUT_FORMAT_BINARY;
1506 #ifdef TCC_TARGET_COFF
1507             } else if (!strcmp(p, "coff")) {
1508                 s->output_format = TCC_OUTPUT_FORMAT_COFF;
1509 #endif
1510             } else
1511                 goto err;
1512
1513         } else if (link_option(option, "as-needed", &p)) {
1514             ignoring = 1;
1515         } else if (link_option(option, "O", &p)) {
1516             ignoring = 1;
1517         } else if (link_option(option, "export-all-symbols", &p)) {
1518             s->rdynamic = 1;
1519         } else if (link_option(option, "export-dynamic", &p)) {
1520             s->rdynamic = 1;
1521         } else if (link_option(option, "rpath=", &p)) {
1522             copy_linker_arg(&s->rpath, p, ':');
1523         } else if (link_option(option, "enable-new-dtags", &p)) {
1524             s->enable_new_dtags = 1;
1525         } else if (link_option(option, "section-alignment=", &p)) {
1526             s->section_align = strtoul(p, &end, 16);
1527         } else if (link_option(option, "soname=", &p)) {
1528             copy_linker_arg(&s->soname, p, 0);
1529         } else if (link_option(option, "install_name=", &p)) {
1530             copy_linker_arg(&s->soname, p, 0);
1531 #ifdef TCC_TARGET_PE
1532         } else if (link_option(option, "large-address-aware", &p)) {
1533             s->pe_characteristics |= 0x20;
1534         } else if (link_option(option, "file-alignment=", &p)) {
1535             s->pe_file_align = strtoul(p, &end, 16);
1536         } else if (link_option(option, "stack=", &p)) {
1537             s->pe_stack_size = strtoul(p, &end, 10);
1538         } else if (link_option(option, "subsystem=", &p)) {
1539 #if defined(TCC_TARGET_I386) || defined(TCC_TARGET_X86_64)
1540             if (!strcmp(p, "native")) {
1541                 s->pe_subsystem = 1;
1542             } else if (!strcmp(p, "console")) {
1543                 s->pe_subsystem = 3;
1544             } else if (!strcmp(p, "gui") || !strcmp(p, "windows")) {
1545                 s->pe_subsystem = 2;
1546             } else if (!strcmp(p, "posix")) {
1547                 s->pe_subsystem = 7;
1548             } else if (!strcmp(p, "efiapp")) {
1549                 s->pe_subsystem = 10;
1550             } else if (!strcmp(p, "efiboot")) {
1551                 s->pe_subsystem = 11;
1552             } else if (!strcmp(p, "efiruntime")) {
1553                 s->pe_subsystem = 12;
1554             } else if (!strcmp(p, "efirom")) {
1555                 s->pe_subsystem = 13;
1556 #elif defined(TCC_TARGET_ARM)
1557             if (!strcmp(p, "wince")) {
1558                 s->pe_subsystem = 9;
1559 #endif
1560             } else
1561                 goto err;
1562 #endif
1563 #ifdef TCC_TARGET_MACHO
1564         } else if (link_option(option, "all_load", &p)) {
1565             s->filetype |= AFF_WHOLE_ARCHIVE;
1566         } else if (link_option(option, "force_load", &p)) {
1567             s->filetype |= AFF_WHOLE_ARCHIVE;
1568             args_parser_add_file(s, p, AFF_TYPE_LIB | (s->filetype & ~AFF_TYPE_MASK));
1569             s->nb_libraries++;
1570         } else if (link_option(option, "single_module", &p)) {
1571             ignoring = 1;
1572 #endif
1573         } else if (ret = link_option(option, "?whole-archive", &p), ret) {
1574             if (ret > 0)
1575                 s->filetype |= AFF_WHOLE_ARCHIVE;
1576             else
1577                 s->filetype &= ~AFF_WHOLE_ARCHIVE;
1578         } else if (link_option(option, "z=", &p)) {
1579             ignoring = 1;
1580         } else if (p) {
1581             return 0;
1582         } else {
1583     err:
1584             return tcc_error_noabort("unsupported linker option '%s'", option);
1585         }
1586         if (ignoring)
1587             tcc_warning_c(warn_unsupported)("unsupported linker option '%s'", option);
1588         option = skip_linker_arg(&p);
1589     }
1590     return 1;
1591 }
1592
1593 typedef struct TCCOption {
1594     const char *name;
1595     uint16_t index;
1596     uint16_t flags;
1597 } TCCOption;
1598
1599 enum {
1600     TCC_OPTION_ignored = 0,
1601     TCC_OPTION_HELP,
1602     TCC_OPTION_HELP2,
1603     TCC_OPTION_v,
1604     TCC_OPTION_I,
1605     TCC_OPTION_D,
1606     TCC_OPTION_U,
1607     TCC_OPTION_P,
1608     TCC_OPTION_L,
1609     TCC_OPTION_B,
1610     TCC_OPTION_l,
1611     TCC_OPTION_bench,
1612     TCC_OPTION_bt,
1613     TCC_OPTION_b,
1614     TCC_OPTION_ba,
1615     TCC_OPTION_g,
1616     TCC_OPTION_c,
1617     TCC_OPTION_dumpversion,
1618     TCC_OPTION_d,
1619     TCC_OPTION_static,
1620     TCC_OPTION_std,
1621     TCC_OPTION_shared,
1622     TCC_OPTION_soname,
1623     TCC_OPTION_o,
1624     TCC_OPTION_r,
1625     TCC_OPTION_Wl,
1626     TCC_OPTION_Wp,
1627     TCC_OPTION_W,
1628     TCC_OPTION_O,
1629     TCC_OPTION_mfloat_abi,
1630     TCC_OPTION_m,
1631     TCC_OPTION_f,
1632     TCC_OPTION_isystem,
1633     TCC_OPTION_iwithprefix,
1634     TCC_OPTION_include,
1635     TCC_OPTION_nostdinc,
1636     TCC_OPTION_nostdlib,
1637     TCC_OPTION_print_search_dirs,
1638     TCC_OPTION_rdynamic,
1639     TCC_OPTION_pthread,
1640     TCC_OPTION_run,
1641     TCC_OPTION_w,
1642     TCC_OPTION_E,
1643     TCC_OPTION_M,
1644     TCC_OPTION_MD,
1645     TCC_OPTION_MF,
1646     TCC_OPTION_MM,
1647     TCC_OPTION_MMD,
1648     TCC_OPTION_x,
1649     TCC_OPTION_ar,
1650     TCC_OPTION_impdef,
1651     TCC_OPTION_dynamiclib,
1652     TCC_OPTION_flat_namespace,
1653     TCC_OPTION_two_levelnamespace,
1654     TCC_OPTION_undefined,
1655     TCC_OPTION_install_name,
1656     TCC_OPTION_compatibility_version ,
1657     TCC_OPTION_current_version,
1658 };
1659
1660 #define TCC_OPTION_HAS_ARG 0x0001
1661 #define TCC_OPTION_NOSEP   0x0002 /* cannot have space before option and arg */
1662
1663 static const TCCOption tcc_options[] = {
1664     { "h", TCC_OPTION_HELP, 0 },
1665     { "-help", TCC_OPTION_HELP, 0 },
1666     { "?", TCC_OPTION_HELP, 0 },
1667     { "hh", TCC_OPTION_HELP2, 0 },
1668     { "v", TCC_OPTION_v, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1669     { "-version", TCC_OPTION_v, 0 }, /* handle as verbose, also prints version*/
1670     { "I", TCC_OPTION_I, TCC_OPTION_HAS_ARG },
1671     { "D", TCC_OPTION_D, TCC_OPTION_HAS_ARG },
1672     { "U", TCC_OPTION_U, TCC_OPTION_HAS_ARG },
1673     { "P", TCC_OPTION_P, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1674     { "L", TCC_OPTION_L, TCC_OPTION_HAS_ARG },
1675     { "B", TCC_OPTION_B, TCC_OPTION_HAS_ARG },
1676     { "l", TCC_OPTION_l, TCC_OPTION_HAS_ARG },
1677     { "bench", TCC_OPTION_bench, 0 },
1678 #ifdef CONFIG_TCC_BACKTRACE
1679     { "bt", TCC_OPTION_bt, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1680 #endif
1681 #ifdef CONFIG_TCC_BCHECK
1682     { "b", TCC_OPTION_b, 0 },
1683 #endif
1684     { "g", TCC_OPTION_g, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1685 #ifdef TCC_TARGET_MACHO
1686     { "compatibility_version", TCC_OPTION_compatibility_version, TCC_OPTION_HAS_ARG },
1687     { "current_version", TCC_OPTION_current_version, TCC_OPTION_HAS_ARG },
1688 #endif
1689     { "c", TCC_OPTION_c, 0 },
1690 #ifdef TCC_TARGET_MACHO
1691     { "dynamiclib", TCC_OPTION_dynamiclib, 0 },
1692 #endif
1693     { "dumpversion", TCC_OPTION_dumpversion, 0},
1694     { "d", TCC_OPTION_d, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1695     { "static", TCC_OPTION_static, 0 },
1696     { "std", TCC_OPTION_std, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1697     { "shared", TCC_OPTION_shared, 0 },
1698     { "soname", TCC_OPTION_soname, TCC_OPTION_HAS_ARG },
1699     { "o", TCC_OPTION_o, TCC_OPTION_HAS_ARG },
1700     { "pthread", TCC_OPTION_pthread, 0},
1701     { "run", TCC_OPTION_run, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1702     { "rdynamic", TCC_OPTION_rdynamic, 0 },
1703     { "r", TCC_OPTION_r, 0 },
1704     { "Wl,", TCC_OPTION_Wl, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1705     { "Wp,", TCC_OPTION_Wp, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1706     { "W", TCC_OPTION_W, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1707     { "O", TCC_OPTION_O, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1708 #ifdef TCC_TARGET_ARM
1709     { "mfloat-abi", TCC_OPTION_mfloat_abi, TCC_OPTION_HAS_ARG },
1710 #endif
1711     { "m", TCC_OPTION_m, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1712 #ifdef TCC_TARGET_MACHO
1713     { "flat_namespace", TCC_OPTION_flat_namespace, 0 },
1714 #endif
1715     { "f", TCC_OPTION_f, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1716     { "isystem", TCC_OPTION_isystem, TCC_OPTION_HAS_ARG },
1717     { "include", TCC_OPTION_include, TCC_OPTION_HAS_ARG },
1718     { "nostdinc", TCC_OPTION_nostdinc, 0 },
1719     { "nostdlib", TCC_OPTION_nostdlib, 0 },
1720     { "print-search-dirs", TCC_OPTION_print_search_dirs, 0 },
1721     { "w", TCC_OPTION_w, 0 },
1722     { "E", TCC_OPTION_E, 0},
1723     { "M", TCC_OPTION_M, 0},
1724     { "MD", TCC_OPTION_MD, 0},
1725     { "MF", TCC_OPTION_MF, TCC_OPTION_HAS_ARG },
1726     { "MM", TCC_OPTION_MM, 0},
1727     { "MMD", TCC_OPTION_MMD, 0},
1728     { "x", TCC_OPTION_x, TCC_OPTION_HAS_ARG },
1729     { "ar", TCC_OPTION_ar, 0},
1730 #ifdef TCC_TARGET_PE
1731     { "impdef", TCC_OPTION_impdef, 0},
1732 #endif
1733 #ifdef TCC_TARGET_MACHO
1734     { "install_name", TCC_OPTION_install_name, TCC_OPTION_HAS_ARG },
1735     { "two_levelnamespace", TCC_OPTION_two_levelnamespace, 0 },
1736     { "undefined", TCC_OPTION_undefined, TCC_OPTION_HAS_ARG },
1737 #endif
1738     /* ignored (silently, except after -Wunsupported) */
1739     { "arch", 0, TCC_OPTION_HAS_ARG},
1740     { "C", 0, 0 },
1741     { "-param", 0, TCC_OPTION_HAS_ARG },
1742     { "pedantic", 0, 0 },
1743     { "pipe", 0, 0 },
1744     { "s", 0, 0 },
1745     { "traditional", 0, 0 },
1746     { NULL, 0, 0 },
1747 };
1748
1749 typedef struct FlagDef {
1750     uint16_t offset;
1751     uint16_t flags;
1752     const char *name;
1753 } FlagDef;
1754
1755 #define WD_ALL    0x0001 /* warning is activated when using -Wall */
1756 #define FD_INVERT 0x0002 /* invert value before storing */
1757
1758 static const FlagDef options_W[] = {
1759     { offsetof(TCCState, warn_all), WD_ALL, "all" },
1760     { offsetof(TCCState, warn_error), 0, "error" },
1761     { offsetof(TCCState, warn_write_strings), 0, "write-strings" },
1762     { offsetof(TCCState, warn_unsupported), 0, "unsupported" },
1763     { offsetof(TCCState, warn_implicit_function_declaration), WD_ALL, "implicit-function-declaration" },
1764     { offsetof(TCCState, warn_discarded_qualifiers), WD_ALL, "discarded-qualifiers" },
1765     { 0, 0, NULL }
1766 };
1767
1768 static const FlagDef options_f[] = {
1769     { offsetof(TCCState, char_is_unsigned), 0, "unsigned-char" },
1770     { offsetof(TCCState, char_is_unsigned), FD_INVERT, "signed-char" },
1771     { offsetof(TCCState, nocommon), FD_INVERT, "common" },
1772     { offsetof(TCCState, leading_underscore), 0, "leading-underscore" },
1773     { offsetof(TCCState, ms_extensions), 0, "ms-extensions" },
1774     { offsetof(TCCState, dollars_in_identifiers), 0, "dollars-in-identifiers" },
1775     { offsetof(TCCState, test_coverage), 0, "test-coverage" },
1776     { 0, 0, NULL }
1777 };
1778
1779 static const FlagDef options_m[] = {
1780     { offsetof(TCCState, ms_bitfields), 0, "ms-bitfields" },
1781 #ifdef TCC_TARGET_X86_64
1782     { offsetof(TCCState, nosse), FD_INVERT, "sse" },
1783 #endif
1784     { 0, 0, NULL }
1785 };
1786
1787 static int set_flag(TCCState *s, const FlagDef *flags, const char *name)
1788 {
1789     int value, mask, ret;
1790     const FlagDef *p;
1791     const char *r;
1792     unsigned char *f;
1793
1794     r = name, value = !strstart("no-", &r), mask = 0;
1795
1796     /* when called with options_W, look for -W[no-]error=<option> */
1797     if ((flags->flags & WD_ALL) && strstart("error=", &r))
1798         value = value ? WARN_ON|WARN_ERR : WARN_NOE, mask = WARN_ON;
1799
1800     for (ret = -1, p = flags; p->name; ++p) {
1801         if (ret) {
1802             if (strcmp(r, p->name))
1803                 continue;
1804         } else {
1805             if (0 == (p->flags & WD_ALL))
1806                 continue;
1807         }
1808
1809         f = (unsigned char *)s + p->offset;
1810         *f = (*f & mask) | (value ^ !!(p->flags & FD_INVERT));
1811
1812         if (ret) {
1813             ret = 0;
1814             if (strcmp(r, "all"))
1815                 break;
1816         }
1817     }
1818     return ret;
1819 }
1820
1821 static int args_parser_make_argv(const char *r, int *argc, char ***argv)
1822 {
1823     int ret = 0, q, c;
1824     CString str;
1825     for(;;) {
1826         while (c = (unsigned char)*r, c && c <= ' ')
1827           ++r;
1828         if (c == 0)
1829             break;
1830         q = 0;
1831         cstr_new(&str);
1832         while (c = (unsigned char)*r, c) {
1833             ++r;
1834             if (c == '\\' && (*r == '"' || *r == '\\')) {
1835                 c = *r++;
1836             } else if (c == '"') {
1837                 q = !q;
1838                 continue;
1839             } else if (q == 0 && c <= ' ') {
1840                 break;
1841             }
1842             cstr_ccat(&str, c);
1843         }
1844         cstr_ccat(&str, 0);
1845         //printf("<%s>\n", str.data), fflush(stdout);
1846         dynarray_add(argv, argc, tcc_strdup(str.data));
1847         cstr_free(&str);
1848         ++ret;
1849     }
1850     return ret;
1851 }
1852
1853 /* read list file */
1854 static int args_parser_listfile(TCCState *s,
1855     const char *filename, int optind, int *pargc, char ***pargv)
1856 {
1857     TCCState *s1 = s;
1858     int fd, i;
1859     char *p;
1860     int argc = 0;
1861     char **argv = NULL;
1862
1863     fd = open(filename, O_RDONLY | O_BINARY);
1864     if (fd < 0)
1865         return tcc_error_noabort("listfile '%s' not found", filename);
1866
1867     p = tcc_load_text(fd);
1868     for (i = 0; i < *pargc; ++i)
1869         if (i == optind)
1870             args_parser_make_argv(p, &argc, &argv);
1871         else
1872             dynarray_add(&argv, &argc, tcc_strdup((*pargv)[i]));
1873
1874     tcc_free(p);
1875     dynarray_reset(&s->argv, &s->argc);
1876     *pargc = s->argc = argc, *pargv = s->argv = argv;
1877     return 0;
1878 }
1879
1880 #if defined TCC_TARGET_MACHO
1881 static uint32_t parse_version(TCCState *s1, const char *version)
1882 {
1883     uint32_t a = 0;
1884     uint32_t b = 0;
1885     uint32_t c = 0;
1886     char* last;
1887
1888     a = strtoul(version, &last, 10);
1889     if (*last == '.') {
1890         b = strtoul(&last[1], &last, 10);
1891         if (*last == '.')
1892              c = strtoul(&last[1], &last, 10);
1893     }
1894     if (*last || a > 0xffff || b > 0xff || c > 0xff)
1895         tcc_error_noabort("version a.b.c not correct: %s", version);
1896     return (a << 16) | (b << 8) | c;
1897 }
1898 #endif
1899
1900 PUB_FUNC int tcc_parse_args(TCCState *s, int *pargc, char ***pargv, int optind)
1901 {
1902     TCCState *s1 = s;
1903     const TCCOption *popt;
1904     const char *optarg, *r;
1905     const char *run = NULL;
1906     int x;
1907     int tool = 0, arg_start = 0, noaction = optind;
1908     char **argv = *pargv;
1909     int argc = *pargc;
1910
1911     cstr_reset(&s->linker_arg);
1912
1913     while (optind < argc) {
1914         r = argv[optind];
1915         if (r[0] == '@' && r[1] != '\0') {
1916             if (args_parser_listfile(s, r + 1, optind, &argc, &argv))
1917                 return -1;
1918             continue;
1919         }
1920         optind++;
1921         if (tool) {
1922             if (r[0] == '-' && r[1] == 'v' && r[2] == 0)
1923                 ++s->verbose;
1924             continue;
1925         }
1926 reparse:
1927         if (r[0] != '-' || r[1] == '\0') {
1928             args_parser_add_file(s, r, s->filetype);
1929             if (run) {
1930 dorun:
1931                 if (tcc_set_options(s, run))
1932                     return -1;
1933                 arg_start = optind - 1;
1934                 break;
1935             }
1936             continue;
1937         }
1938
1939         /* allow "tcc files... -run -- args ..." */
1940         if (r[1] == '-' && r[2] == '\0' && run)
1941             goto dorun;
1942
1943         /* find option in table */
1944         for(popt = tcc_options; ; ++popt) {
1945             const char *p1 = popt->name;
1946             const char *r1 = r + 1;
1947             if (p1 == NULL)
1948                 return tcc_error_noabort("invalid option -- '%s'", r);
1949             if (!strstart(p1, &r1))
1950                 continue;
1951             optarg = r1;
1952             if (popt->flags & TCC_OPTION_HAS_ARG) {
1953                 if (*r1 == '\0' && !(popt->flags & TCC_OPTION_NOSEP)) {
1954                     if (optind >= argc)
1955                 arg_err:
1956                         return tcc_error_noabort("argument to '%s' is missing", r);
1957                     optarg = argv[optind++];
1958                 }
1959             } else if (*r1 != '\0')
1960                 continue;
1961             break;
1962         }
1963
1964         switch(popt->index) {
1965         case TCC_OPTION_HELP:
1966             x = OPT_HELP;
1967             goto extra_action;
1968         case TCC_OPTION_HELP2:
1969             x = OPT_HELP2;
1970             goto extra_action;
1971         case TCC_OPTION_I:
1972             tcc_add_include_path(s, optarg);
1973             break;
1974         case TCC_OPTION_D:
1975             tcc_define_symbol(s, optarg, NULL);
1976             break;
1977         case TCC_OPTION_U:
1978             tcc_undefine_symbol(s, optarg);
1979             break;
1980         case TCC_OPTION_L:
1981             tcc_add_library_path(s, optarg);
1982             break;
1983         case TCC_OPTION_B:
1984             /* set tcc utilities path (mainly for tcc development) */
1985             tcc_set_lib_path(s, optarg);
1986             ++noaction;
1987             break;
1988         case TCC_OPTION_l:
1989             args_parser_add_file(s, optarg, AFF_TYPE_LIB | (s->filetype & ~AFF_TYPE_MASK));
1990             s->nb_libraries++;
1991             break;
1992         case TCC_OPTION_pthread:
1993             s->option_pthread = 1;
1994             break;
1995         case TCC_OPTION_bench:
1996             s->do_bench = 1;
1997             break;
1998 #ifdef CONFIG_TCC_BACKTRACE
1999         case TCC_OPTION_bt:
2000             s->rt_num_callers = atoi(optarg);
2001             s->do_backtrace = 1;
2002             s->do_debug = 1;
2003             s->dwarf = DWARF_VERSION;
2004             break;
2005 #endif
2006 #ifdef CONFIG_TCC_BCHECK
2007         case TCC_OPTION_b:
2008             s->do_bounds_check = 1;
2009             s->do_backtrace = 1;
2010             s->do_debug = 1;
2011             s->dwarf = DWARF_VERSION;
2012             break;
2013 #endif
2014         case TCC_OPTION_g:
2015             s->do_debug = 1;
2016             s->dwarf = DWARF_VERSION;
2017
2018             if (strstart("dwarf", &optarg))
2019                 s->dwarf = (*optarg) ? (0 - atoi(optarg)) : DEFAULT_DWARF_VERSION;
2020             break;
2021         case TCC_OPTION_c:
2022             x = TCC_OUTPUT_OBJ;
2023         set_output_type:
2024             if (s->output_type)
2025                 tcc_warning("-%s: overriding compiler action already specified", popt->name);
2026             s->output_type = x;
2027             break;
2028         case TCC_OPTION_d:
2029             if (*optarg == 'D')
2030                 s->dflag = 3;
2031             else if (*optarg == 'M')
2032                 s->dflag = 7;
2033             else if (*optarg == 't')
2034                 s->dflag = 16;
2035             else if (isnum(*optarg))
2036                 s->g_debug |= atoi(optarg);
2037             else
2038                 goto unsupported_option;
2039             break;
2040         case TCC_OPTION_static:
2041             s->static_link = 1;
2042             break;
2043         case TCC_OPTION_std:
2044             if (strcmp(optarg, "=c11") == 0)
2045                 s->cversion = 201112;
2046             break;
2047         case TCC_OPTION_shared:
2048             x = TCC_OUTPUT_DLL;
2049             goto set_output_type;
2050         case TCC_OPTION_soname:
2051             s->soname = tcc_strdup(optarg);
2052             break;
2053         case TCC_OPTION_o:
2054             if (s->outfile) {
2055                 tcc_warning("multiple -o option");
2056                 tcc_free(s->outfile);
2057             }
2058             s->outfile = tcc_strdup(optarg);
2059             break;
2060         case TCC_OPTION_r:
2061             /* generate a .o merging several output files */
2062             s->option_r = 1;
2063             x = TCC_OUTPUT_OBJ;
2064             goto set_output_type;
2065         case TCC_OPTION_isystem:
2066             tcc_add_sysinclude_path(s, optarg);
2067             break;
2068         case TCC_OPTION_include:
2069             cstr_printf(&s->cmdline_incl, "#include \"%s\"\n", optarg);
2070             break;
2071         case TCC_OPTION_nostdinc:
2072             s->nostdinc = 1;
2073             break;
2074         case TCC_OPTION_nostdlib:
2075             s->nostdlib = 1;
2076             break;
2077         case TCC_OPTION_run:
2078 #ifndef TCC_IS_NATIVE
2079             return tcc_error_noabort("-run is not available in a cross compiler");
2080 #else
2081             run = optarg;
2082             x = TCC_OUTPUT_MEMORY;
2083             goto set_output_type;
2084 #endif
2085         case TCC_OPTION_v:
2086             do ++s->verbose; while (*optarg++ == 'v');
2087             ++noaction;
2088             break;
2089         case TCC_OPTION_f:
2090             if (set_flag(s, options_f, optarg) < 0)
2091                 goto unsupported_option;
2092             break;
2093 #ifdef TCC_TARGET_ARM
2094         case TCC_OPTION_mfloat_abi:
2095             /* tcc doesn't support soft float yet */
2096             if (!strcmp(optarg, "softfp")) {
2097                 s->float_abi = ARM_SOFTFP_FLOAT;
2098             } else if (!strcmp(optarg, "hard"))
2099                 s->float_abi = ARM_HARD_FLOAT;
2100             else
2101                 return tcc_error_noabort("unsupported float abi '%s'", optarg);
2102             break;
2103 #endif
2104         case TCC_OPTION_m:
2105             if (set_flag(s, options_m, optarg) < 0) {
2106                 if (x = atoi(optarg), x != 32 && x != 64)
2107                     goto unsupported_option;
2108                 if (PTR_SIZE != x/8)
2109                     return x;
2110                 ++noaction;
2111             }
2112             break;
2113         case TCC_OPTION_W:
2114             s->warn_none = 0;
2115             if (optarg[0] && set_flag(s, options_W, optarg) < 0)
2116                 goto unsupported_option;
2117             break;
2118         case TCC_OPTION_w:
2119             s->warn_none = 1;
2120             break;
2121         case TCC_OPTION_rdynamic:
2122             s->rdynamic = 1;
2123             break;
2124         case TCC_OPTION_Wl:
2125             if (s->linker_arg.size)
2126                 ((char*)s->linker_arg.data)[s->linker_arg.size - 1] = ',';
2127             cstr_cat(&s->linker_arg, optarg, 0);
2128             x = tcc_set_linker(s, s->linker_arg.data);
2129             if (x)
2130                 cstr_reset(&s->linker_arg);
2131             if (x < 0)
2132                 return -1;
2133             break;
2134         case TCC_OPTION_Wp:
2135             r = optarg;
2136             goto reparse;
2137         case TCC_OPTION_E:
2138             x = TCC_OUTPUT_PREPROCESS;
2139             goto set_output_type;
2140         case TCC_OPTION_P:
2141             s->Pflag = atoi(optarg) + 1;
2142             break;
2143         case TCC_OPTION_M:
2144             s->include_sys_deps = 1;
2145             // fall through
2146         case TCC_OPTION_MM:
2147             s->just_deps = 1;
2148             if(!s->deps_outfile)
2149                 s->deps_outfile = tcc_strdup("-");
2150             // fall through
2151         case TCC_OPTION_MMD:
2152             s->gen_deps = 1;
2153             break;
2154         case TCC_OPTION_MD:
2155             s->gen_deps = 1;
2156             s->include_sys_deps = 1;
2157             break;
2158         case TCC_OPTION_MF:
2159             s->deps_outfile = tcc_strdup(optarg);
2160             break;
2161         case TCC_OPTION_dumpversion:
2162             printf ("%s\n", TCC_VERSION);
2163             exit(0);
2164             break;
2165         case TCC_OPTION_x:
2166             x = 0;
2167             if (*optarg == 'c')
2168                 x = AFF_TYPE_C;
2169             else if (*optarg == 'a')
2170                 x = AFF_TYPE_ASMPP;
2171             else if (*optarg == 'b')
2172                 x = AFF_TYPE_BIN;
2173             else if (*optarg == 'n')
2174                 x = AFF_TYPE_NONE;
2175             else
2176                 tcc_warning("unsupported language '%s'", optarg);
2177             s->filetype = x | (s->filetype & ~AFF_TYPE_MASK);
2178             break;
2179         case TCC_OPTION_O:
2180             s->optimize = atoi(optarg);
2181             break;
2182         case TCC_OPTION_print_search_dirs:
2183             x = OPT_PRINT_DIRS;
2184             goto extra_action;
2185         case TCC_OPTION_impdef:
2186             x = OPT_IMPDEF;
2187             goto extra_action;
2188 #if defined TCC_TARGET_MACHO
2189         case TCC_OPTION_dynamiclib:
2190             x = TCC_OUTPUT_DLL;
2191             goto set_output_type;
2192         case TCC_OPTION_flat_namespace:
2193              break;
2194         case TCC_OPTION_two_levelnamespace:
2195              break;
2196         case TCC_OPTION_undefined:
2197              break;
2198         case TCC_OPTION_install_name:
2199             s->install_name = tcc_strdup(optarg);
2200             break;
2201         case TCC_OPTION_compatibility_version:
2202             s->compatibility_version = parse_version(s, optarg);
2203             break;
2204         case TCC_OPTION_current_version:
2205             s->current_version = parse_version(s, optarg);;
2206             break;
2207 #endif
2208         case TCC_OPTION_ar:
2209             x = OPT_AR;
2210         extra_action:
2211             arg_start = optind - 1;
2212             if (arg_start != noaction)
2213                 return tcc_error_noabort("cannot parse %s here", r);
2214             tool = x;
2215             break;
2216         default:
2217 unsupported_option:
2218             tcc_warning_c(warn_unsupported)("unsupported option '%s'", r);
2219             break;
2220         }
2221     }
2222     if (s->linker_arg.size) {
2223         r = s->linker_arg.data;
2224         goto arg_err;
2225     }
2226     *pargc = argc - arg_start;
2227     *pargv = argv + arg_start;
2228     if (tool)
2229         return tool;
2230     if (optind != noaction)
2231         return 0;
2232     if (s->verbose == 2)
2233         return OPT_PRINT_DIRS;
2234     if (s->verbose)
2235         return OPT_V;
2236     return OPT_HELP;
2237 }
2238
2239 LIBTCCAPI int tcc_set_options(TCCState *s, const char *r)
2240 {
2241     char **argv = NULL;
2242     int argc = 0, ret;
2243     args_parser_make_argv(r, &argc, &argv);
2244     ret = tcc_parse_args(s, &argc, &argv, 0);
2245     dynarray_reset(&argv, &argc);
2246     return ret < 0 ? ret : 0;
2247 }
2248
2249 PUB_FUNC void tcc_print_stats(TCCState *s1, unsigned total_time)
2250 {
2251     if (!total_time)
2252         total_time = 1;
2253     fprintf(stderr, "# %d idents, %d lines, %u bytes\n"
2254                     "# %0.3f s, %u lines/s, %0.1f MB/s\n",
2255            total_idents, total_lines, total_bytes,
2256            (double)total_time/1000,
2257            (unsigned)total_lines*1000/total_time,
2258            (double)total_bytes/1000/total_time);
2259     fprintf(stderr, "# text %u, data.rw %u, data.ro %u, bss %u bytes\n",
2260            s1->total_output[0],
2261            s1->total_output[1],
2262            s1->total_output[2],
2263            s1->total_output[3]
2264            );
2265 #ifdef MEM_DEBUG
2266     fprintf(stderr, "# %d bytes memory used\n", mem_max_size);
2267 #endif
2268 }