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