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