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 "tccelf.c"
  25 #include "tccrun.c"
  26 #ifdef TCC_TARGET_I386
  27 #include "i386-gen.c"
  28 #include "i386-link.c"
  29 #include "i386-asm.c"
  30 #elif defined(TCC_TARGET_ARM)
  31 #include "arm-gen.c"
  32 #include "arm-link.c"
  33 #include "arm-asm.c"
  34 #elif defined(TCC_TARGET_ARM64)
  35 #include "arm64-gen.c"
  36 #include "arm64-link.c"
  37 #include "arm-asm.c"
  38 #elif defined(TCC_TARGET_C67)
  39 #include "c67-gen.c"
  40 #include "c67-link.c"
  41 #include "tcccoff.c"
  42 #elif defined(TCC_TARGET_X86_64)
  43 #include "x86_64-gen.c"
  44 #include "x86_64-link.c"
  45 #include "i386-asm.c"
  46 #elif defined(TCC_TARGET_RISCV64)
  47 #include "riscv64-gen.c"
  48 #include "riscv64-link.c"
  49 #include "riscv64-asm.c"
  50 #else
  51 #error unknown target
  52 #endif
  53 #ifdef CONFIG_TCC_ASM
  54 #include "tccasm.c"
  55 #endif
  56 #ifdef TCC_TARGET_PE
  57 #include "tccpe.c"
  58 #endif
  59 #ifdef TCC_TARGET_MACHO
  60 #include "tccmacho.c"
  61 #endif
  62 #endif /* ONE_SOURCE */
  63
  64 #include "tcc.h"
  65
  66 /********************************************************/
  67 /* global variables */
  68
  69 /* XXX: get rid of this ASAP (or maybe not) */
  70 ST_DATA struct TCCState *tcc_state;
  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 static HMODULE tcc_module;
  88
  89 /* on win32, we suppose the lib and includes are at the location of 'tcc.exe' */
  90 static void tcc_set_lib_path_w32(TCCState *s)
  91 {
  92     char path[1024], *p;
  93     GetModuleFileNameA(tcc_module, path, sizeof path);
  94     p = tcc_basename(normalize_slashes(strlwr(path)));
  95     if (p > path)
  96         --p;
  97     *p = 0;
  98     tcc_set_lib_path(s, path);
  99 }
 100
 101 #ifdef TCC_TARGET_PE
 102 static void tcc_add_systemdir(TCCState *s)
 103 {
 104     char buf[1000];
 105     GetSystemDirectory(buf, sizeof buf);
 106     tcc_add_library_path(s, normalize_slashes(buf));
 107 }
 108 #endif
 109
 110 #ifdef LIBTCC_AS_DLL
 111 BOOL WINAPI DllMain (HINSTANCE hDll, DWORD dwReason, LPVOID lpReserved)
 112 {
 113     if (DLL_PROCESS_ATTACH == dwReason)
 114         tcc_module = hDll;
 115     return TRUE;
 116 }
 117 #endif
 118 #endif
 119
 120 /********************************************************/
 121 #ifndef CONFIG_TCC_SEMLOCK
 122 #define WAIT_SEM()
 123 #define POST_SEM()
 124 #elif defined _WIN32
 125 static int tcc_sem_init;
 126 static CRITICAL_SECTION tcc_cr;
 127 static void wait_sem(void)
 128 {
 129     if (!tcc_sem_init)
 130         InitializeCriticalSection(&tcc_cr), tcc_sem_init = 1;
 131     EnterCriticalSection(&tcc_cr);
 132 }
 133 #define WAIT_SEM() wait_sem()
 134 #define POST_SEM() LeaveCriticalSection(&tcc_cr);
 135 #elif defined __APPLE__
 136 /* Half-compatible MacOS doesn't have non-shared (process local)
 137    semaphores.  Use the dispatch framework for lightweight locks.  */
 138 #include <dispatch/dispatch.h>
 139 static int tcc_sem_init;
 140 static dispatch_semaphore_t tcc_sem;
 141 static void wait_sem(void)
 142 {
 143     if (!tcc_sem_init)
 144       tcc_sem = dispatch_semaphore_create(1), tcc_sem_init = 1;
 145     dispatch_semaphore_wait(tcc_sem, DISPATCH_TIME_FOREVER);
 146 }
 147 #define WAIT_SEM() wait_sem()
 148 #define POST_SEM() dispatch_semaphore_signal(tcc_sem)
 149 #else
 150 #include <semaphore.h>
 151 static int tcc_sem_init;
 152 static sem_t tcc_sem;
 153 static void wait_sem(void)
 154 {
 155     if (!tcc_sem_init)
 156         sem_init(&tcc_sem, 0, 1), tcc_sem_init = 1;
 157     while (sem_wait (&tcc_sem) < 0 && errno == EINTR);
 158 }
 159 #define WAIT_SEM() wait_sem()
 160 #define POST_SEM() sem_post(&tcc_sem)
 161 #endif
 162
 163 /********************************************************/
 164 /* copy a string and truncate it. */
 165 ST_FUNC char *pstrcpy(char *buf, size_t buf_size, const char *s)
 166 {
 167     char *q, *q_end;
 168     int c;
 169
 170     if (buf_size > 0) {
 171         q = buf;
 172         q_end = buf + buf_size - 1;
 173         while (q < q_end) {
 174             c = *s++;
 175             if (c == '\0')
 176                 break;
 177             *q++ = c;
 178         }
 179         *q = '\0';
 180     }
 181     return buf;
 182 }
 183
 184 /* strcat and truncate. */
 185 ST_FUNC char *pstrcat(char *buf, size_t buf_size, const char *s)
 186 {
 187     size_t len;
 188     len = strlen(buf);
 189     if (len < buf_size)
 190         pstrcpy(buf + len, buf_size - len, s);
 191     return buf;
 192 }
 193
 194 ST_FUNC char *pstrncpy(char *out, const char *in, size_t num)
 195 {
 196     memcpy(out, in, num);
 197     out[num] = '\0';
 198     return out;
 199 }
 200
 201 /* extract the basename of a file */
 202 PUB_FUNC char *tcc_basename(const char *name)
 203 {
 204     char *p = strchr(name, 0);
 205     while (p > name && !IS_DIRSEP(p[-1]))
 206         --p;
 207     return p;
 208 }
 209
 210 /* extract extension part of a file
 211  *
 212  * (if no extension, return pointer to end-of-string)
 213  */
 214 PUB_FUNC char *tcc_fileextension (const char *name)
 215 {
 216     char *b = tcc_basename(name);
 217     char *e = strrchr(b, '.');
 218     return e ? e : strchr(b, 0);
 219 }
 220
 221 /********************************************************/
 222 /* memory management */
 223
 224 #undef free
 225 #undef malloc
 226 #undef realloc
 227
 228 #ifndef MEM_DEBUG
 229
 230 PUB_FUNC void tcc_free(void *ptr)
 231 {
 232     free(ptr);
 233 }
 234
 235 PUB_FUNC void *tcc_malloc(unsigned long size)
 236 {
 237     void *ptr;
 238     ptr = malloc(size);
 239     if (!ptr && size)
 240         _tcc_error("memory full (malloc)");
 241     return ptr;
 242 }
 243
 244 PUB_FUNC void *tcc_mallocz(unsigned long size)
 245 {
 246     void *ptr;
 247     ptr = tcc_malloc(size);
 248     if (size)
 249         memset(ptr, 0, size);
 250     return ptr;
 251 }
 252
 253 PUB_FUNC void *tcc_realloc(void *ptr, unsigned long size)
 254 {
 255     void *ptr1;
 256     ptr1 = realloc(ptr, size);
 257     if (!ptr1 && size)
 258         _tcc_error("memory full (realloc)");
 259     return ptr1;
 260 }
 261
 262 PUB_FUNC char *tcc_strdup(const char *str)
 263 {
 264     char *ptr;
 265     ptr = tcc_malloc(strlen(str) + 1);
 266     strcpy(ptr, str);
 267     return ptr;
 268 }
 269
 270 #else
 271
 272 #define MEM_DEBUG_MAGIC1 0xFEEDDEB1
 273 #define MEM_DEBUG_MAGIC2 0xFEEDDEB2
 274 #define MEM_DEBUG_MAGIC3 0xFEEDDEB3
 275 #define MEM_DEBUG_FILE_LEN 40
 276 #define MEM_DEBUG_CHECK3(header) \
 277     ((mem_debug_header_t*)((char*)header + header->size))->magic3
 278 #define MEM_USER_PTR(header) \
 279     ((char *)header + offsetof(mem_debug_header_t, magic3))
 280 #define MEM_HEADER_PTR(ptr) \
 281     (mem_debug_header_t *)((char*)ptr - offsetof(mem_debug_header_t, magic3))
 282
 283 struct mem_debug_header {
 284     unsigned magic1;
 285     unsigned size;
 286     struct mem_debug_header *prev;
 287     struct mem_debug_header *next;
 288     int line_num;
 289     char file_name[MEM_DEBUG_FILE_LEN + 1];
 290     unsigned magic2;
 291     ALIGNED(16) unsigned magic3;
 292 };
 293
 294 typedef struct mem_debug_header mem_debug_header_t;
 295
 296 static mem_debug_header_t *mem_debug_chain;
 297 static unsigned mem_cur_size;
 298 static unsigned mem_max_size;
 299
 300 static mem_debug_header_t *malloc_check(void *ptr, const char *msg)
 301 {
 302     mem_debug_header_t * header = MEM_HEADER_PTR(ptr);
 303     if (header->magic1 != MEM_DEBUG_MAGIC1 ||
 304         header->magic2 != MEM_DEBUG_MAGIC2 ||
 305         MEM_DEBUG_CHECK3(header) != MEM_DEBUG_MAGIC3 ||
 306         header->size == (unsigned)-1) {
 307         fprintf(stderr, "%s check failed\n", msg);
 308         if (header->magic1 == MEM_DEBUG_MAGIC1)
 309             fprintf(stderr, "%s:%u: block allocated here.\n",
 310                 header->file_name, header->line_num);
 311         exit(1);
 312     }
 313     return header;
 314 }
 315
 316 PUB_FUNC void *tcc_malloc_debug(unsigned long size, const char *file, int line)
 317 {
 318     int ofs;
 319     mem_debug_header_t *header;
 320
 321     header = malloc(sizeof(mem_debug_header_t) + size);
 322     if (!header)
 323         _tcc_error("memory full (malloc)");
 324
 325     header->magic1 = MEM_DEBUG_MAGIC1;
 326     header->magic2 = MEM_DEBUG_MAGIC2;
 327     header->size = size;
 328     MEM_DEBUG_CHECK3(header) = MEM_DEBUG_MAGIC3;
 329     header->line_num = line;
 330     ofs = strlen(file) - MEM_DEBUG_FILE_LEN;
 331     strncpy(header->file_name, file + (ofs > 0 ? ofs : 0), MEM_DEBUG_FILE_LEN);
 332     header->file_name[MEM_DEBUG_FILE_LEN] = 0;
 333
 334     header->next = mem_debug_chain;
 335     header->prev = NULL;
 336     if (header->next)
 337         header->next->prev = header;
 338     mem_debug_chain = header;
 339
 340     mem_cur_size += size;
 341     if (mem_cur_size > mem_max_size)
 342         mem_max_size = mem_cur_size;
 343
 344     return MEM_USER_PTR(header);
 345 }
 346
 347 PUB_FUNC void tcc_free_debug(void *ptr)
 348 {
 349     mem_debug_header_t *header;
 350     if (!ptr)
 351         return;
 352     header = malloc_check(ptr, "tcc_free");
 353     mem_cur_size -= header->size;
 354     header->size = (unsigned)-1;
 355     if (header->next)
 356         header->next->prev = header->prev;
 357     if (header->prev)
 358         header->prev->next = header->next;
 359     if (header == mem_debug_chain)
 360         mem_debug_chain = header->next;
 361     free(header);
 362 }
 363
 364 PUB_FUNC void *tcc_mallocz_debug(unsigned long size, const char *file, int line)
 365 {
 366     void *ptr;
 367     ptr = tcc_malloc_debug(size,file,line);
 368     memset(ptr, 0, size);
 369     return ptr;
 370 }
 371
 372 PUB_FUNC void *tcc_realloc_debug(void *ptr, unsigned long size, const char *file, int line)
 373 {
 374     mem_debug_header_t *header;
 375     int mem_debug_chain_update = 0;
 376     if (!ptr)
 377         return tcc_malloc_debug(size, file, line);
 378     header = malloc_check(ptr, "tcc_realloc");
 379     mem_cur_size -= header->size;
 380     mem_debug_chain_update = (header == mem_debug_chain);
 381     header = realloc(header, sizeof(mem_debug_header_t) + size);
 382     if (!header)
 383         _tcc_error("memory full (realloc)");
 384     header->size = size;
 385     MEM_DEBUG_CHECK3(header) = MEM_DEBUG_MAGIC3;
 386     if (header->next)
 387         header->next->prev = header;
 388     if (header->prev)
 389         header->prev->next = header;
 390     if (mem_debug_chain_update)
 391         mem_debug_chain = header;
 392     mem_cur_size += size;
 393     if (mem_cur_size > mem_max_size)
 394         mem_max_size = mem_cur_size;
 395     return MEM_USER_PTR(header);
 396 }
 397
 398 PUB_FUNC char *tcc_strdup_debug(const char *str, const char *file, int line)
 399 {
 400     char *ptr;
 401     ptr = tcc_malloc_debug(strlen(str) + 1, file, line);
 402     strcpy(ptr, str);
 403     return ptr;
 404 }
 405
 406 PUB_FUNC void tcc_memcheck(void)
 407 {
 408     if (mem_cur_size) {
 409         mem_debug_header_t *header = mem_debug_chain;
 410         fprintf(stderr, "MEM_DEBUG: mem_leak= %d bytes, mem_max_size= %d bytes\n",
 411             mem_cur_size, mem_max_size);
 412         while (header) {
 413             fprintf(stderr, "%s:%u: error: %u bytes leaked\n",
 414                 header->file_name, header->line_num, header->size);
 415             header = header->next;
 416         }
 417 #if MEM_DEBUG-0 == 2
 418         exit(2);
 419 #endif
 420     }
 421 }
 422 #endif /* MEM_DEBUG */
 423
 424 #define free(p) use_tcc_free(p)
 425 #define malloc(s) use_tcc_malloc(s)
 426 #define realloc(p, s) use_tcc_realloc(p, s)
 427
 428 /********************************************************/
 429 /* dynarrays */
 430
 431 ST_FUNC void dynarray_add(void *ptab, int *nb_ptr, void *data)
 432 {
 433     int nb, nb_alloc;
 434     void **pp;
 435
 436     nb = *nb_ptr;
 437     pp = *(void ***)ptab;
 438     /* every power of two we double array size */
 439     if ((nb & (nb - 1)) == 0) {
 440         if (!nb)
 441             nb_alloc = 1;
 442         else
 443             nb_alloc = nb * 2;
 444         pp = tcc_realloc(pp, nb_alloc * sizeof(void *));
 445         *(void***)ptab = pp;
 446     }
 447     pp[nb++] = data;
 448     *nb_ptr = nb;
 449 }
 450
 451 ST_FUNC void dynarray_reset(void *pp, int *n)
 452 {
 453     void **p;
 454     for (p = *(void***)pp; *n; ++p, --*n)
 455         if (*p)
 456             tcc_free(*p);
 457     tcc_free(*(void**)pp);
 458     *(void**)pp = NULL;
 459 }
 460
 461 static void tcc_split_path(TCCState *s, void *p_ary, int *p_nb_ary, const char *in)
 462 {
 463     const char *p;
 464     do {
 465         int c;
 466         CString str;
 467
 468         cstr_new(&str);
 469         for (p = in; c = *p, c != '\0' && c != PATHSEP[0]; ++p) {
 470             if (c == '{' && p[1] && p[2] == '}') {
 471                 c = p[1], p += 2;
 472                 if (c == 'B')
 473                     cstr_cat(&str, s->tcc_lib_path, -1);
 474                 if (c == 'f' && file) {
 475                     /* substitute current file's dir */
 476                     const char *f = file->true_filename;
 477                     const char *b = tcc_basename(f);
 478                     if (b > f)
 479                         cstr_cat(&str, f, b - f - 1);
 480                     else
 481                         cstr_cat(&str, ".", 1);
 482                 }
 483             } else {
 484                 cstr_ccat(&str, c);
 485             }
 486         }
 487         if (str.size) {
 488             cstr_ccat(&str, '\0');
 489             dynarray_add(p_ary, p_nb_ary, tcc_strdup(str.data));
 490         }
 491         cstr_free(&str);
 492         in = p+1;
 493     } while (*p);
 494 }
 495
 496 /********************************************************/
 497
 498 static void strcat_vprintf(char *buf, int buf_size, const char *fmt, va_list ap)
 499 {
 500     int len;
 501     len = strlen(buf);
 502     vsnprintf(buf + len, buf_size - len, fmt, ap);
 503 }
 504
 505 static void strcat_printf(char *buf, int buf_size, const char *fmt, ...)
 506 {
 507     va_list ap;
 508     va_start(ap, fmt);
 509     strcat_vprintf(buf, buf_size, fmt, ap);
 510     va_end(ap);
 511 }
 512
 513 #define ERROR_WARN 0
 514 #define ERROR_NOABORT 1
 515 #define ERROR_ERROR 2
 516
 517 PUB_FUNC void tcc_enter_state(TCCState *s1)
 518 {
 519     WAIT_SEM();
 520     tcc_state = s1;
 521 }
 522
 523 PUB_FUNC void tcc_exit_state(void)
 524 {
 525     tcc_state = NULL;
 526     POST_SEM();
 527 }
 528
 529 static void error1(int mode, const char *fmt, va_list ap)
 530 {
 531     char buf[2048];
 532     BufferedFile **pf, *f;
 533     TCCState *s1 = tcc_state;
 534
 535     buf[0] = '\0';
 536     if (s1 == NULL)
 537         /* can happen only if called from tcc_malloc(): 'out of memory' */
 538         goto no_file;
 539
 540     if (s1 && !s1->error_set_jmp_enabled)
 541         /* tcc_state just was set by tcc_enter_state() */
 542         tcc_exit_state();
 543
 544     if (mode == ERROR_WARN) {
 545         if (s1->warn_none)
 546             return;
 547         if (s1->warn_error)
 548             mode = ERROR_ERROR;
 549     }
 550
 551     f = NULL;
 552     if (s1->error_set_jmp_enabled) { /* we're called while parsing a file */
 553         /* use upper file if inline ":asm:" or token ":paste:" */
 554         for (f = file; f && f->filename[0] == ':'; f = f->prev)
 555             ;
 556     }
 557     if (f) {
 558         for(pf = s1->include_stack; pf < s1->include_stack_ptr; pf++)
 559             strcat_printf(buf, sizeof(buf), "In file included from %s:%d:\n",
 560                 (*pf)->filename, (*pf)->line_num);
 561         strcat_printf(buf, sizeof(buf), "%s:%d: ",
 562             f->filename, f->line_num - !!(tok_flags & TOK_FLAG_BOL));
 563     } else if (s1->current_filename) {
 564         strcat_printf(buf, sizeof(buf), "%s: ", s1->current_filename);
 565     }
 566
 567 no_file:
 568     if (0 == buf[0])
 569         strcat_printf(buf, sizeof(buf), "tcc: ");
 570     if (mode == ERROR_WARN)
 571         strcat_printf(buf, sizeof(buf), "warning: ");
 572     else
 573         strcat_printf(buf, sizeof(buf), "error: ");
 574     strcat_vprintf(buf, sizeof(buf), fmt, ap);
 575     if (!s1 || !s1->error_func) {
 576         /* default case: stderr */
 577         if (s1 && s1->output_type == TCC_OUTPUT_PREPROCESS && s1->ppfp == stdout)
 578             /* print a newline during tcc -E */
 579             printf("\n"), fflush(stdout);
 580         fflush(stdout); /* flush -v output */
 581         fprintf(stderr, "%s\n", buf);
 582         fflush(stderr); /* print error/warning now (win32) */
 583     } else {
 584         s1->error_func(s1->error_opaque, buf);
 585     }
 586     if (s1) {
 587         if (mode != ERROR_WARN)
 588             s1->nb_errors++;
 589         if (mode != ERROR_ERROR)
 590             return;
 591         if (s1->error_set_jmp_enabled)
 592             longjmp(s1->error_jmp_buf, 1);
 593     }
 594     exit(1);
 595 }
 596
 597 LIBTCCAPI void tcc_set_error_func(TCCState *s, void *error_opaque, TCCErrorFunc error_func)
 598 {
 599     s->error_opaque = error_opaque;
 600     s->error_func = error_func;
 601 }
 602
 603 LIBTCCAPI TCCErrorFunc tcc_get_error_func(TCCState *s)
 604 {
 605     return s->error_func;
 606 }
 607
 608 LIBTCCAPI void *tcc_get_error_opaque(TCCState *s)
 609 {
 610     return s->error_opaque;
 611 }
 612
 613 /* error without aborting current compilation */
 614 PUB_FUNC void _tcc_error_noabort(const char *fmt, ...)
 615 {
 616     va_list ap;
 617     va_start(ap, fmt);
 618     error1(ERROR_NOABORT, fmt, ap);
 619     va_end(ap);
 620 }
 621
 622 PUB_FUNC void _tcc_error(const char *fmt, ...)
 623 {
 624     va_list ap;
 625     va_start(ap, fmt);
 626     for (;;) error1(ERROR_ERROR, fmt, ap);
 627 }
 628
 629 PUB_FUNC void _tcc_warning(const char *fmt, ...)
 630 {
 631     va_list ap;
 632     va_start(ap, fmt);
 633     error1(ERROR_WARN, fmt, ap);
 634     va_end(ap);
 635 }
 636
 637 /********************************************************/
 638 /* I/O layer */
 639
 640 ST_FUNC void tcc_open_bf(TCCState *s1, const char *filename, int initlen)
 641 {
 642     BufferedFile *bf;
 643     int buflen = initlen ? initlen : IO_BUF_SIZE;
 644
 645     bf = tcc_mallocz(sizeof(BufferedFile) + buflen);
 646     bf->buf_ptr = bf->buffer;
 647     bf->buf_end = bf->buffer + initlen;
 648     bf->buf_end[0] = CH_EOB; /* put eob symbol */
 649     pstrcpy(bf->filename, sizeof(bf->filename), filename);
 650 #ifdef _WIN32
 651     normalize_slashes(bf->filename);
 652 #endif
 653     bf->true_filename = bf->filename;
 654     bf->line_num = 1;
 655     bf->ifdef_stack_ptr = s1->ifdef_stack_ptr;
 656     bf->fd = -1;
 657     bf->prev = file;
 658     file = bf;
 659     tok_flags = TOK_FLAG_BOL | TOK_FLAG_BOF;
 660 }
 661
 662 ST_FUNC void tcc_close(void)
 663 {
 664     TCCState *s1 = tcc_state;
 665     BufferedFile *bf = file;
 666     if (bf->fd > 0) {
 667         close(bf->fd);
 668         total_lines += bf->line_num;
 669     }
 670     if (bf->true_filename != bf->filename)
 671         tcc_free(bf->true_filename);
 672     file = bf->prev;
 673     tcc_free(bf);
 674 }
 675
 676 static int _tcc_open(TCCState *s1, const char *filename)
 677 {
 678     int fd;
 679     if (strcmp(filename, "-") == 0)
 680         fd = 0, filename = "<stdin>";
 681     else
 682         fd = open(filename, O_RDONLY | O_BINARY);
 683     if ((s1->verbose == 2 && fd >= 0) || s1->verbose == 3)
 684         printf("%s %*s%s\n", fd < 0 ? "nf":"->",
 685                (int)(s1->include_stack_ptr - s1->include_stack), "", filename);
 686     return fd;
 687 }
 688
 689 ST_FUNC int tcc_open(TCCState *s1, const char *filename)
 690 {
 691     int fd = _tcc_open(s1, filename);
 692     if (fd < 0)
 693         return -1;
 694     tcc_open_bf(s1, filename, 0);
 695     file->fd = fd;
 696     return 0;
 697 }
 698
 699 /* compile the file opened in 'file'. Return non zero if errors. */
 700 static int tcc_compile(TCCState *s1, int filetype, const char *str, int fd)
 701 {
 702     /* Here we enter the code section where we use the global variables for
 703        parsing and code generation (tccpp.c, tccgen.c, <target>-gen.c).
 704        Other threads need to wait until we're done.
 705
 706        Alternatively we could use thread local storage for those global
 707        variables, which may or may not have advantages */
 708
 709     tcc_enter_state(s1);
 710
 711     if (setjmp(s1->error_jmp_buf) == 0) {
 712         s1->error_set_jmp_enabled = 1;
 713         s1->nb_errors = 0;
 714
 715         if (fd == -1) {
 716             int len = strlen(str);
 717             tcc_open_bf(s1, "<string>", len);
 718             memcpy(file->buffer, str, len);
 719         } else {
 720             tcc_open_bf(s1, str, 0);
 721             file->fd = fd;
 722         }
 723
 724         tccelf_begin_file(s1);
 725         preprocess_start(s1, filetype);
 726         tccgen_init(s1);
 727         if (s1->output_type == TCC_OUTPUT_PREPROCESS) {
 728             tcc_preprocess(s1);
 729         } else if (filetype & (AFF_TYPE_ASM | AFF_TYPE_ASMPP)) {
 730 #ifdef CONFIG_TCC_ASM
 731             tcc_assemble(s1, !!(filetype & AFF_TYPE_ASMPP));
 732 #else
 733             tcc_error_noabort("asm not supported");
 734 #endif
 735         } else {
 736             tccgen_compile(s1);
 737         }
 738     }
 739     s1->error_set_jmp_enabled = 0;
 740     tccgen_finish(s1);
 741     preprocess_end(s1);
 742     tcc_exit_state();
 743
 744     tccelf_end_file(s1);
 745     return s1->nb_errors != 0 ? -1 : 0;
 746 }
 747
 748 LIBTCCAPI int tcc_compile_string(TCCState *s, const char *str)
 749 {
 750     return tcc_compile(s, s->filetype, str, -1);
 751 }
 752
 753 /* define a preprocessor symbol. value can be NULL, sym can be "sym=val" */
 754 LIBTCCAPI void tcc_define_symbol(TCCState *s1, const char *sym, const char *value)
 755 {
 756     const char *eq;
 757     if (NULL == (eq = strchr(sym, '=')))
 758         eq = strchr(sym, 0);
 759     if (NULL == value)
 760         value = *eq ? eq + 1 : "1";
 761     cstr_printf(&s1->cmdline_defs, "#define %.*s %s\n", (int)(eq-sym), sym, value);
 762 }
 763
 764 /* undefine a preprocessor symbol */
 765 LIBTCCAPI void tcc_undefine_symbol(TCCState *s1, const char *sym)
 766 {
 767     cstr_printf(&s1->cmdline_defs, "#undef %s\n", sym);
 768 }
 769
 770
 771 LIBTCCAPI TCCState *tcc_new(void)
 772 {
 773     TCCState *s;
 774
 775     s = tcc_mallocz(sizeof(TCCState));
 776     if (!s)
 777         return NULL;
 778 #ifdef MEM_DEBUG
 779     ++nb_states;
 780 #endif
 781
 782 #undef gnu_ext
 783
 784     s->gnu_ext = 1;
 785     s->tcc_ext = 1;
 786     s->nocommon = 1;
 787     s->dollars_in_identifiers = 1; /*on by default like in gcc/clang*/
 788     s->cversion = 199901; /* default unless -std=c11 is supplied */
 789     s->warn_implicit_function_declaration = 1;
 790     s->ms_extensions = 1;
 791
 792 #ifdef CHAR_IS_UNSIGNED
 793     s->char_is_unsigned = 1;
 794 #endif
 795 #ifdef TCC_TARGET_I386
 796     s->seg_size = 32;
 797 #endif
 798     /* enable this if you want symbols with leading underscore on windows: */
 799 #if defined TCC_TARGET_MACHO /* || defined TCC_TARGET_PE */
 800     s->leading_underscore = 1;
 801 #endif
 802     s->ppfp = stdout;
 803     /* might be used in error() before preprocess_start() */
 804     s->include_stack_ptr = s->include_stack;
 805
 806     tccelf_new(s);
 807
 808 #ifdef _WIN32
 809     tcc_set_lib_path_w32(s);
 810 #else
 811     tcc_set_lib_path(s, CONFIG_TCCDIR);
 812 #endif
 813
 814     {
 815         /* define __TINYC__ 92X  */
 816         char buffer[32]; int a,b,c;
 817         sscanf(TCC_VERSION, "%d.%d.%d", &a, &b, &c);
 818         sprintf(buffer, "%d", a*10000 + b*100 + c);
 819         tcc_define_symbol(s, "__TINYC__", buffer);
 820     }
 821
 822     /* standard defines */
 823     tcc_define_symbol(s, "__STDC__", NULL);
 824     tcc_define_symbol(s, "__STDC_VERSION__", "199901L");
 825     tcc_define_symbol(s, "__STDC_HOSTED__", NULL);
 826
 827     /* target defines */
 828 #if defined(TCC_TARGET_I386)
 829     tcc_define_symbol(s, "__i386__", NULL);
 830     tcc_define_symbol(s, "__i386", NULL);
 831     tcc_define_symbol(s, "i386", NULL);
 832 #elif defined(TCC_TARGET_X86_64)
 833     tcc_define_symbol(s, "__x86_64__", NULL);
 834 #elif defined(TCC_TARGET_ARM)
 835     tcc_define_symbol(s, "__ARM_ARCH_4__", NULL);
 836     tcc_define_symbol(s, "__arm_elf__", NULL);
 837     tcc_define_symbol(s, "__arm_elf", NULL);
 838     tcc_define_symbol(s, "arm_elf", NULL);
 839     tcc_define_symbol(s, "__arm__", NULL);
 840     tcc_define_symbol(s, "__arm", NULL);
 841     tcc_define_symbol(s, "arm", NULL);
 842     tcc_define_symbol(s, "__APCS_32__", NULL);
 843     tcc_define_symbol(s, "__ARMEL__", NULL);
 844 #if defined(TCC_ARM_EABI)
 845     tcc_define_symbol(s, "__ARM_EABI__", NULL);
 846 #endif
 847 #if defined(TCC_ARM_HARDFLOAT)
 848     s->float_abi = ARM_HARD_FLOAT;
 849     tcc_define_symbol(s, "__ARM_PCS_VFP", NULL);
 850 #else
 851     s->float_abi = ARM_SOFTFP_FLOAT;
 852 #endif
 853 #elif defined(TCC_TARGET_ARM64)
 854     tcc_define_symbol(s, "__aarch64__", NULL);
 855 #elif defined TCC_TARGET_C67
 856     tcc_define_symbol(s, "__C67__", NULL);
 857 #elif defined TCC_TARGET_RISCV64
 858     tcc_define_symbol(s, "__riscv", NULL);
 859     tcc_define_symbol(s, "__riscv_xlen", "64");
 860     tcc_define_symbol(s, "__riscv_flen", "64");
 861     tcc_define_symbol(s, "__riscv_div", NULL);
 862     tcc_define_symbol(s, "__riscv_mul", NULL);
 863     tcc_define_symbol(s, "__riscv_fdiv", NULL);
 864     tcc_define_symbol(s, "__riscv_fsqrt", NULL);
 865     tcc_define_symbol(s, "__riscv_float_abi_double", NULL);
 866 #endif
 867
 868 #ifdef TCC_TARGET_PE
 869     tcc_define_symbol(s, "_WIN32", NULL);
 870     tcc_define_symbol(s, "__declspec(x)", "__attribute__((x))");
 871     tcc_define_symbol(s, "__cdecl", "");
 872 # ifdef TCC_TARGET_X86_64
 873     tcc_define_symbol(s, "_WIN64", NULL);
 874 # endif
 875 #else
 876     tcc_define_symbol(s, "__unix__", NULL);
 877     tcc_define_symbol(s, "__unix", NULL);
 878     tcc_define_symbol(s, "unix", NULL);
 879 # if defined(__linux__)
 880     tcc_define_symbol(s, "__linux__", NULL);
 881     tcc_define_symbol(s, "__linux", NULL);
 882 # endif
 883 # if TARGETOS_FreeBSD
 884     tcc_define_symbol(s, "__FreeBSD__", "12");
 885     /* No 'Thread Storage Local' on FreeBSD with tcc */
 886     tcc_define_symbol(s, "__NO_TLS", NULL);
 887     tcc_define_symbol(s, "__builtin_huge_val()", "1e500");
 888     tcc_define_symbol(s, "__builtin_huge_valf()", "1e50f");
 889     tcc_define_symbol(s, "__builtin_huge_vall()", "1e5000L");
 890     tcc_define_symbol(s, "__builtin_nanf(ignored_string)", "(0.0F/0.0F)");
 891 #   if defined(__aarch64__)
 892     /* FIXME, __int128_t is used by setjump */
 893     tcc_define_symbol(s, "__int128_t", "struct { unsigned char _dummy[16]; }");
 894 #   endif
 895 # endif
 896 # if TARGETOS_FreeBSD_kernel
 897     tcc_define_symbol(s, "__FreeBSD_kernel__", NULL);
 898 # endif
 899 # if TARGETOS_NetBSD
 900     tcc_define_symbol(s, "__NetBSD__", "1");
 901     tcc_define_symbol(s, "__GNUC__", "4");
 902     tcc_define_symbol(s, "__GNUC_MINOR__", "0");
 903     tcc_define_symbol(s, "__GNUC_PATCHLEVEL__", "0");
 904     tcc_define_symbol(s, "_Pragma(x)", "");
 905     tcc_define_symbol(s, "__ELF__", "1");
 906     tcc_define_symbol(s, "__amd64__", "1");
 907     tcc_define_symbol(s, "__builtin_huge_val()", "1e500");
 908     tcc_define_symbol(s, "__builtin_huge_valf()", "1e50f");
 909     tcc_define_symbol(s, "__builtin_huge_vall()", "1e5000L");
 910     tcc_define_symbol(s, "__builtin_nanf(ignored_string)", "(0.0F/0.0F)");
 911 # endif
 912 # if TARGETOS_OpenBSD
 913     tcc_define_symbol(s, "__OpenBSD__", "1");
 914     tcc_define_symbol(s, "_ANSI_LIBRARY", "1");
 915     tcc_define_symbol(s, "__GNUC__", "4");
 916     /* used by math.h */
 917     tcc_define_symbol(s, "__builtin_huge_val()", "1e500");
 918     tcc_define_symbol(s, "__builtin_huge_valf()", "1e50f");
 919     tcc_define_symbol(s, "__builtin_huge_vall()", "1e5000L");
 920     tcc_define_symbol(s, "__builtin_nanf(ignored_string)", "(0.0F/0.0F)");
 921 # endif
 922 #endif
 923
 924     /* TinyCC & gcc defines */
 925 #if PTR_SIZE == 4
 926     /* 32bit systems. */
 927     tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned int");
 928     tcc_define_symbol(s, "__PTRDIFF_TYPE__", "int");
 929     tcc_define_symbol(s, "__ILP32__", NULL);
 930 #elif LONG_SIZE == 4
 931     /* 64bit Windows. */
 932     tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned long long");
 933     tcc_define_symbol(s, "__PTRDIFF_TYPE__", "long long");
 934     tcc_define_symbol(s, "__LLP64__", NULL);
 935 #else
 936     /* Other 64bit systems. */
 937     tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned long");
 938     tcc_define_symbol(s, "__PTRDIFF_TYPE__", "long");
 939     tcc_define_symbol(s, "__LP64__", NULL);
 940 #endif
 941     tcc_define_symbol(s, "__SIZEOF_POINTER__", PTR_SIZE == 4 ? "4" : "8");
 942
 943 #ifdef TCC_TARGET_PE
 944     tcc_define_symbol(s, "__WCHAR_TYPE__", "unsigned short");
 945     tcc_define_symbol(s, "__WINT_TYPE__", "unsigned short");
 946 #else
 947     tcc_define_symbol(s, "__WCHAR_TYPE__", "int");
 948     /* wint_t is unsigned int by default, but (signed) int on BSDs
 949        and unsigned short on windows.  Other OSes might have still
 950        other conventions, sigh.  */
 951 # if TARGETOS_FreeBSD || TARGETOS_FreeBSD_kernel || TARGETOS_NetBSD || TARGETOS_OpenBSD
 952     tcc_define_symbol(s, "__WINT_TYPE__", "int");
 953 #  if TARGETOS_FreeBSD
 954     /* define __GNUC__ to have some useful stuff from sys/cdefs.h
 955        that are unconditionally used in FreeBSDs other system headers :/ */
 956     tcc_define_symbol(s, "__GNUC__", "9");
 957     tcc_define_symbol(s, "__GNUC_MINOR__", "3");
 958     tcc_define_symbol(s, "__GNUC_PATCHLEVEL__", "0");
 959     tcc_define_symbol(s, "__GNUC_STDC_INLINE__", "1");
 960     tcc_define_symbol(s, "__amd64__", "1");
 961 #  endif
 962 # else
 963     tcc_define_symbol(s, "__WINT_TYPE__", "unsigned int");
 964     /* glibc defines */
 965     tcc_define_symbol(s, "__REDIRECT(name, proto, alias)",
 966         "name proto __asm__ (#alias)");
 967     tcc_define_symbol(s, "__REDIRECT_NTH(name, proto, alias)",
 968         "name proto __asm__ (#alias) __THROW");
 969 # endif
 970     /* Some GCC builtins that are simple to express as macros.  */
 971     tcc_define_symbol(s, "__builtin_extract_return_addr(x)", "x");
 972 #endif /* ndef TCC_TARGET_PE */
 973 #ifdef TCC_TARGET_MACHO
 974     /* emulate APPLE-GCC to make libc's headerfiles compile: */
 975     tcc_define_symbol(s, "__APPLE__", "1");
 976     tcc_define_symbol(s, "__GNUC__", "4");   /* darwin emits warning on GCC<4 */
 977     tcc_define_symbol(s, "__APPLE_CC__", "1"); /* for <TargetConditionals.h> */
 978     tcc_define_symbol(s, "_DONT_USE_CTYPE_INLINE_", "1");
 979     /* used by math.h */
 980     tcc_define_symbol(s, "__builtin_huge_val()", "1e500");
 981     tcc_define_symbol(s, "__builtin_huge_valf()", "1e50f");
 982     tcc_define_symbol(s, "__builtin_huge_vall()", "1e5000L");
 983     tcc_define_symbol(s, "__builtin_nanf(ignored_string)", "__nan()");
 984     /* used by _fd_def.h */
 985     tcc_define_symbol(s, "__builtin_bzero(p, ignored_size)", "bzero(p, sizeof(*(p)))");
 986     /* used by floats.h to implement FLT_ROUNDS C99 macro. 1 == to nearest */
 987     tcc_define_symbol(s, "__builtin_flt_rounds()", "1");
 988
 989     /* avoids usage of GCC/clang specific builtins in libc-headerfiles: */
 990     tcc_define_symbol(s, "__FINITE_MATH_ONLY__", "1");
 991     tcc_define_symbol(s, "_FORTIFY_SOURCE", "0");
 992 #endif /* ndef TCC_TARGET_MACHO */
 993
 994 #if LONG_SIZE == 4
 995     tcc_define_symbol(s, "__SIZEOF_LONG__", "4");
 996     tcc_define_symbol(s, "__LONG_MAX__", "0x7fffffffL");
 997 #else
 998     tcc_define_symbol(s, "__SIZEOF_LONG__", "8");
 999     tcc_define_symbol(s, "__LONG_MAX__", "0x7fffffffffffffffL");
1000 #endif
1001     tcc_define_symbol(s, "__SIZEOF_INT__", "4");
1002     tcc_define_symbol(s, "__SIZEOF_LONG_LONG__", "8");
1003     tcc_define_symbol(s, "__CHAR_BIT__", "8");
1004     tcc_define_symbol(s, "__ORDER_LITTLE_ENDIAN__", "1234");
1005     tcc_define_symbol(s, "__ORDER_BIG_ENDIAN__", "4321");
1006     tcc_define_symbol(s, "__BYTE_ORDER__", "__ORDER_LITTLE_ENDIAN__");
1007     tcc_define_symbol(s, "__INT_MAX__", "0x7fffffff");
1008     tcc_define_symbol(s, "__LONG_LONG_MAX__", "0x7fffffffffffffffLL");
1009     tcc_define_symbol(s, "__builtin_offsetof(type,field)", "((__SIZE_TYPE__) &((type *)0)->field)");
1010     return s;
1011 }
1012
1013 LIBTCCAPI void tcc_delete(TCCState *s1)
1014 {
1015     /* free sections */
1016     tccelf_delete(s1);
1017
1018     /* free library paths */
1019     dynarray_reset(&s1->library_paths, &s1->nb_library_paths);
1020     dynarray_reset(&s1->crt_paths, &s1->nb_crt_paths);
1021
1022     /* free include paths */
1023     dynarray_reset(&s1->include_paths, &s1->nb_include_paths);
1024     dynarray_reset(&s1->sysinclude_paths, &s1->nb_sysinclude_paths);
1025
1026     tcc_free(s1->tcc_lib_path);
1027     tcc_free(s1->soname);
1028     tcc_free(s1->rpath);
1029     tcc_free(s1->init_symbol);
1030     tcc_free(s1->fini_symbol);
1031     tcc_free(s1->outfile);
1032     tcc_free(s1->deps_outfile);
1033     dynarray_reset(&s1->files, &s1->nb_files);
1034     dynarray_reset(&s1->target_deps, &s1->nb_target_deps);
1035     dynarray_reset(&s1->pragma_libs, &s1->nb_pragma_libs);
1036     dynarray_reset(&s1->argv, &s1->argc);
1037     cstr_free(&s1->cmdline_defs);
1038     cstr_free(&s1->cmdline_incl);
1039 #ifdef TCC_IS_NATIVE
1040     /* free runtime memory */
1041     tcc_run_free(s1);
1042 #endif
1043
1044     tcc_free(s1);
1045 #ifdef MEM_DEBUG
1046     if (0 == --nb_states)
1047         tcc_memcheck();
1048 #endif
1049 }
1050
1051 LIBTCCAPI int tcc_set_output_type(TCCState *s, int output_type)
1052 {
1053     s->output_type = output_type;
1054
1055     /* always elf for objects */
1056     if (output_type == TCC_OUTPUT_OBJ)
1057         s->output_format = TCC_OUTPUT_FORMAT_ELF;
1058
1059     if (s->char_is_unsigned)
1060         tcc_define_symbol(s, "__CHAR_UNSIGNED__", NULL);
1061
1062     if (s->cversion == 201112) {
1063         tcc_undefine_symbol(s, "__STDC_VERSION__");
1064         tcc_define_symbol(s, "__STDC_VERSION__", "201112L");
1065         tcc_define_symbol(s, "__STDC_NO_ATOMICS__", NULL);
1066         tcc_define_symbol(s, "__STDC_NO_COMPLEX__", NULL);
1067         tcc_define_symbol(s, "__STDC_NO_THREADS__", NULL);
1068 #ifndef TCC_TARGET_PE
1069         /* on Linux, this conflicts with a define introduced by
1070            /usr/include/stdc-predef.h included by glibc libs
1071         tcc_define_symbol(s, "__STDC_ISO_10646__", "201605L"); */
1072         tcc_define_symbol(s, "__STDC_UTF_16__", NULL);
1073         tcc_define_symbol(s, "__STDC_UTF_32__", NULL);
1074 #endif
1075     }
1076
1077     if (s->optimize > 0)
1078         tcc_define_symbol(s, "__OPTIMIZE__", NULL);
1079
1080     if (s->option_pthread)
1081         tcc_define_symbol(s, "_REENTRANT", NULL);
1082
1083     if (s->leading_underscore)
1084         tcc_define_symbol(s, "__leading_underscore", NULL);
1085
1086     if (!s->nostdinc) {
1087         /* default include paths */
1088         /* -isystem paths have already been handled */
1089         tcc_add_sysinclude_path(s, CONFIG_TCC_SYSINCLUDEPATHS);
1090     }
1091
1092 #ifdef CONFIG_TCC_BCHECK
1093     if (s->do_bounds_check) {
1094         /* if bound checking, then add corresponding sections */
1095         tccelf_bounds_new(s);
1096         /* define symbol */
1097         tcc_define_symbol(s, "__BOUNDS_CHECKING_ON", NULL);
1098     }
1099 #endif
1100     if (s->do_debug) {
1101         /* add debug sections */
1102         tccelf_stab_new(s);
1103     }
1104
1105     tcc_add_library_path(s, CONFIG_TCC_LIBPATHS);
1106
1107 #ifdef TCC_TARGET_PE
1108 # ifdef _WIN32
1109     if (!s->nostdlib && output_type != TCC_OUTPUT_OBJ)
1110         tcc_add_systemdir(s);
1111 # endif
1112 #else
1113     /* paths for crt objects */
1114     tcc_split_path(s, &s->crt_paths, &s->nb_crt_paths, CONFIG_TCC_CRTPREFIX);
1115     /* add libc crt1/crti objects */
1116     if ((output_type == TCC_OUTPUT_EXE || output_type == TCC_OUTPUT_DLL) &&
1117         !s->nostdlib) {
1118 #if TARGETOS_OpenBSD || TARGETOS_FreeBSD || TARGETOS_NetBSD
1119 #if TARGETOS_OpenBSD
1120         if (output_type != TCC_OUTPUT_DLL)
1121             tcc_add_crt(s, "crt0.o");
1122 #elif TARGETOS_FreeBSD
1123         if (output_type != TCC_OUTPUT_DLL)
1124             tcc_add_crt(s, "crt1.o");
1125         tcc_add_crt(s, "crti.o");
1126 #elif TARGETOS_NetBSD
1127         if (output_type != TCC_OUTPUT_DLL)
1128             tcc_add_crt(s, "crt0.o");
1129         tcc_add_crt(s, "crti.o");
1130 #endif
1131         if (s->static_link)
1132             tcc_add_crt(s, "crtbeginT.o");
1133         else if (output_type == TCC_OUTPUT_DLL)
1134             tcc_add_crt(s, "crtbeginS.o");
1135         else
1136             tcc_add_crt(s, "crtbegin.o");
1137 #elif !TCC_TARGET_MACHO
1138         /* Mach-O with LC_MAIN doesn't need any crt startup code.  */
1139         if (output_type != TCC_OUTPUT_DLL)
1140             tcc_add_crt(s, "crt1.o");
1141         tcc_add_crt(s, "crti.o");
1142 #endif
1143     }
1144 #endif
1145     return 0;
1146 }
1147
1148 LIBTCCAPI int tcc_add_include_path(TCCState *s, const char *pathname)
1149 {
1150     tcc_split_path(s, &s->include_paths, &s->nb_include_paths, pathname);
1151     return 0;
1152 }
1153
1154 LIBTCCAPI int tcc_add_sysinclude_path(TCCState *s, const char *pathname)
1155 {
1156     tcc_split_path(s, &s->sysinclude_paths, &s->nb_sysinclude_paths, pathname);
1157     return 0;
1158 }
1159
1160 #if !defined TCC_TARGET_MACHO || defined TCC_IS_NATIVE
1161 ST_FUNC DLLReference *tcc_add_dllref(TCCState *s1, const char *dllname)
1162 {
1163     DLLReference *ref = tcc_mallocz(sizeof(DLLReference) + strlen(dllname));
1164     strcpy(ref->name, dllname);
1165     dynarray_add(&s1->loaded_dlls, &s1->nb_loaded_dlls, ref);
1166     return ref;
1167 }
1168 #endif
1169
1170 ST_FUNC int tcc_add_file_internal(TCCState *s1, const char *filename, int flags)
1171 {
1172     int fd, ret = -1;
1173
1174     /* open the file */
1175     fd = _tcc_open(s1, filename);
1176     if (fd < 0) {
1177         if (flags & AFF_PRINT_ERROR)
1178             tcc_error_noabort("file '%s' not found", filename);
1179         return ret;
1180     }
1181
1182     s1->current_filename = filename;
1183     if (flags & AFF_TYPE_BIN) {
1184         ElfW(Ehdr) ehdr;
1185         int obj_type;
1186
1187         obj_type = tcc_object_type(fd, &ehdr);
1188         lseek(fd, 0, SEEK_SET);
1189
1190 #ifdef TCC_TARGET_MACHO
1191         if (0 == obj_type && 0 == strcmp(tcc_fileextension(filename), ".dylib"))
1192             obj_type = AFF_BINTYPE_DYN;
1193 #endif
1194
1195         switch (obj_type) {
1196
1197         case AFF_BINTYPE_REL:
1198             ret = tcc_load_object_file(s1, fd, 0);
1199             break;
1200
1201         case AFF_BINTYPE_AR:
1202             ret = tcc_load_archive(s1, fd, !(flags & AFF_WHOLE_ARCHIVE));
1203             break;
1204
1205 #ifdef TCC_TARGET_PE
1206         default:
1207             ret = pe_load_file(s1, fd, filename);
1208 #else
1209         case AFF_BINTYPE_DYN:
1210             if (s1->output_type == TCC_OUTPUT_MEMORY) {
1211 #ifdef TCC_IS_NATIVE
1212                 void *dl = dlopen(filename, RTLD_GLOBAL | RTLD_LAZY);
1213                 if (dl) {
1214                     tcc_add_dllref(s1, filename)->handle = dl;
1215                     ret = 0;
1216                 }
1217 #endif
1218                 break;
1219             }
1220 #ifdef TCC_TARGET_MACHO
1221             ret = macho_load_dll(s1, fd, filename,
1222                                  (flags & AFF_REFERENCED_DLL) != 0);
1223 #else
1224             ret = tcc_load_dll(s1, fd, filename,
1225                                (flags & AFF_REFERENCED_DLL) != 0);
1226 #endif
1227             break;
1228
1229 #ifdef TCC_TARGET_COFF
1230         case AFF_BINTYPE_C67:
1231             ret = tcc_load_coff(s1, fd);
1232             break;
1233 #endif
1234         default:
1235 #ifndef TCC_TARGET_MACHO
1236             /* as GNU ld, consider it is an ld script if not recognized */
1237             ret = tcc_load_ldscript(s1, fd);
1238 #endif
1239
1240 #endif /* !TCC_TARGET_PE */
1241             if (ret < 0)
1242                 tcc_error_noabort("%s: unrecognized file type", filename);
1243             break;
1244         }
1245         close(fd);
1246     } else {
1247         /* update target deps */
1248         dynarray_add(&s1->target_deps, &s1->nb_target_deps, tcc_strdup(filename));
1249         ret = tcc_compile(s1, flags, filename, fd);
1250     }
1251     s1->current_filename = NULL;
1252     return ret;
1253 }
1254
1255 LIBTCCAPI int tcc_add_file(TCCState *s, const char *filename)
1256 {
1257     int filetype = s->filetype;
1258     if (0 == (filetype & AFF_TYPE_MASK)) {
1259         /* use a file extension to detect a filetype */
1260         const char *ext = tcc_fileextension(filename);
1261         if (ext[0]) {
1262             ext++;
1263             if (!strcmp(ext, "S"))
1264                 filetype = AFF_TYPE_ASMPP;
1265             else if (!strcmp(ext, "s"))
1266                 filetype = AFF_TYPE_ASM;
1267             else if (!PATHCMP(ext, "c") || !PATHCMP(ext, "i"))
1268                 filetype = AFF_TYPE_C;
1269             else
1270                 filetype |= AFF_TYPE_BIN;
1271         } else {
1272             filetype = AFF_TYPE_C;
1273         }
1274     }
1275     return tcc_add_file_internal(s, filename, filetype | AFF_PRINT_ERROR);
1276 }
1277
1278 LIBTCCAPI int tcc_add_library_path(TCCState *s, const char *pathname)
1279 {
1280     tcc_split_path(s, &s->library_paths, &s->nb_library_paths, pathname);
1281     return 0;
1282 }
1283
1284 static int tcc_add_library_internal(TCCState *s, const char *fmt,
1285     const char *filename, int flags, char **paths, int nb_paths)
1286 {
1287     char buf[1024];
1288     int i;
1289
1290     for(i = 0; i < nb_paths; i++) {
1291         snprintf(buf, sizeof(buf), fmt, paths[i], filename);
1292         if (tcc_add_file_internal(s, buf, flags | AFF_TYPE_BIN) == 0)
1293             return 0;
1294     }
1295     return -1;
1296 }
1297
1298 #ifndef TCC_TARGET_MACHO
1299 /* find and load a dll. Return non zero if not found */
1300 /* XXX: add '-rpath' option support ? */
1301 ST_FUNC int tcc_add_dll(TCCState *s, const char *filename, int flags)
1302 {
1303     return tcc_add_library_internal(s, "%s/%s", filename, flags,
1304         s->library_paths, s->nb_library_paths);
1305 }
1306 #endif
1307
1308 #if !defined TCC_TARGET_PE && !defined TCC_TARGET_MACHO
1309 ST_FUNC int tcc_add_crt(TCCState *s1, const char *filename)
1310 {
1311     if (-1 == tcc_add_library_internal(s1, "%s/%s",
1312         filename, 0, s1->crt_paths, s1->nb_crt_paths))
1313         tcc_error_noabort("file '%s' not found", filename);
1314     return 0;
1315 }
1316 #endif
1317
1318 /* the library name is the same as the argument of the '-l' option */
1319 LIBTCCAPI int tcc_add_library(TCCState *s, const char *libraryname)
1320 {
1321 #if defined TCC_TARGET_PE
1322     const char *libs[] = { "%s/%s.def", "%s/lib%s.def", "%s/%s.dll", "%s/lib%s.dll", "%s/lib%s.a", NULL };
1323     const char **pp = s->static_link ? libs + 4 : libs;
1324 #elif defined TCC_TARGET_MACHO
1325     const char *libs[] = { "%s/lib%s.dylib", "%s/lib%s.a", NULL };
1326     const char **pp = s->static_link ? libs + 1 : libs;
1327 #else
1328     const char *libs[] = { "%s/lib%s.so", "%s/lib%s.a", NULL };
1329     const char **pp = s->static_link ? libs + 1 : libs;
1330 #endif
1331     int flags = s->filetype & AFF_WHOLE_ARCHIVE;
1332     while (*pp) {
1333         if (0 == tcc_add_library_internal(s, *pp,
1334             libraryname, flags, s->library_paths, s->nb_library_paths))
1335             return 0;
1336         ++pp;
1337     }
1338     return -1;
1339 }
1340
1341 PUB_FUNC int tcc_add_library_err(TCCState *s1, const char *libname)
1342 {
1343     int ret = tcc_add_library(s1, libname);
1344     if (ret < 0)
1345         tcc_error_noabort("library '%s' not found", libname);
1346     return ret;
1347 }
1348
1349 /* handle #pragma comment(lib,) */
1350 ST_FUNC void tcc_add_pragma_libs(TCCState *s1)
1351 {
1352     int i;
1353     for (i = 0; i < s1->nb_pragma_libs; i++)
1354         tcc_add_library_err(s1, s1->pragma_libs[i]);
1355 }
1356
1357 LIBTCCAPI int tcc_add_symbol(TCCState *s1, const char *name, const void *val)
1358 {
1359 #ifdef TCC_TARGET_PE
1360     /* On x86_64 'val' might not be reachable with a 32bit offset.
1361        So it is handled here as if it were in a DLL. */
1362     pe_putimport(s1, 0, name, (uintptr_t)val);
1363 #else
1364     char buf[256];
1365     if (s1->leading_underscore) {
1366         buf[0] = '_';
1367         pstrcpy(buf + 1, sizeof(buf) - 1, name);
1368         name = buf;
1369     }
1370     set_global_sym(s1, name, NULL, (addr_t)(uintptr_t)val); /* NULL: SHN_ABS */
1371 #endif
1372     return 0;
1373 }
1374
1375 LIBTCCAPI void tcc_set_lib_path(TCCState *s, const char *path)
1376 {
1377     tcc_free(s->tcc_lib_path);
1378     s->tcc_lib_path = tcc_strdup(path);
1379 }
1380
1381 #define WD_ALL    0x0001 /* warning is activated when using -Wall */
1382 #define FD_INVERT 0x0002 /* invert value before storing */
1383
1384 typedef struct FlagDef {
1385     uint16_t offset;
1386     uint16_t flags;
1387     const char *name;
1388 } FlagDef;
1389
1390 static int no_flag(const char **pp)
1391 {
1392     const char *p = *pp;
1393     if (*p != 'n' || *++p != 'o' || *++p != '-')
1394         return 0;
1395     *pp = p + 1;
1396     return 1;
1397 }
1398
1399 ST_FUNC int set_flag(TCCState *s, const FlagDef *flags, const char *name)
1400 {
1401     int value, ret;
1402     const FlagDef *p;
1403     const char *r;
1404
1405     value = 1;
1406     r = name;
1407     if (no_flag(&r))
1408         value = 0;
1409
1410     for (ret = -1, p = flags; p->name; ++p) {
1411         if (ret) {
1412             if (strcmp(r, p->name))
1413                 continue;
1414         } else {
1415             if (0 == (p->flags & WD_ALL))
1416                 continue;
1417         }
1418         if (p->offset) {
1419             *((unsigned char *)s + p->offset) =
1420                 p->flags & FD_INVERT ? !value : value;
1421             if (ret)
1422                 return 0;
1423         } else {
1424             ret = 0;
1425         }
1426     }
1427     return ret;
1428 }
1429
1430 static int strstart(const char *val, const char **str)
1431 {
1432     const char *p, *q;
1433     p = *str;
1434     q = val;
1435     while (*q) {
1436         if (*p != *q)
1437             return 0;
1438         p++;
1439         q++;
1440     }
1441     *str = p;
1442     return 1;
1443 }
1444
1445 /* Like strstart, but automatically takes into account that ld options can
1446  *
1447  * - start with double or single dash (e.g. '--soname' or '-soname')
1448  * - arguments can be given as separate or after '=' (e.g. '-Wl,-soname,x.so'
1449  *   or '-Wl,-soname=x.so')
1450  *
1451  * you provide `val` always in 'option[=]' form (no leading -)
1452  */
1453 static int link_option(const char *str, const char *val, const char **ptr)
1454 {
1455     const char *p, *q;
1456     int ret;
1457
1458     /* there should be 1 or 2 dashes */
1459     if (*str++ != '-')
1460         return 0;
1461     if (*str == '-')
1462         str++;
1463
1464     /* then str & val should match (potentially up to '=') */
1465     p = str;
1466     q = val;
1467
1468     ret = 1;
1469     if (q[0] == '?') {
1470         ++q;
1471         if (no_flag(&p))
1472             ret = -1;
1473     }
1474
1475     while (*q != '\0' && *q != '=') {
1476         if (*p != *q)
1477             return 0;
1478         p++;
1479         q++;
1480     }
1481
1482     /* '=' near eos means ',' or '=' is ok */
1483     if (*q == '=') {
1484         if (*p == 0)
1485             *ptr = p;
1486         if (*p != ',' && *p != '=')
1487             return 0;
1488         p++;
1489     } else if (*p) {
1490         return 0;
1491     }
1492     *ptr = p;
1493     return ret;
1494 }
1495
1496 static const char *skip_linker_arg(const char **str)
1497 {
1498     const char *s1 = *str;
1499     const char *s2 = strchr(s1, ',');
1500     *str = s2 ? s2++ : (s2 = s1 + strlen(s1));
1501     return s2;
1502 }
1503
1504 static void copy_linker_arg(char **pp, const char *s, int sep)
1505 {
1506     const char *q = s;
1507     char *p = *pp;
1508     int l = 0;
1509     if (p && sep)
1510         p[l = strlen(p)] = sep, ++l;
1511     skip_linker_arg(&q);
1512     pstrncpy(l + (*pp = tcc_realloc(p, q - s + l + 1)), s, q - s);
1513 }
1514
1515 /* set linker options */
1516 static int tcc_set_linker(TCCState *s, const char *option)
1517 {
1518     TCCState *s1 = s;
1519     while (*option) {
1520
1521         const char *p = NULL;
1522         char *end = NULL;
1523         int ignoring = 0;
1524         int ret;
1525
1526         if (link_option(option, "Bsymbolic", &p)) {
1527             s->symbolic = 1;
1528         } else if (link_option(option, "nostdlib", &p)) {
1529             s->nostdlib = 1;
1530         } else if (link_option(option, "fini=", &p)) {
1531             copy_linker_arg(&s->fini_symbol, p, 0);
1532             ignoring = 1;
1533         } else if (link_option(option, "image-base=", &p)
1534                 || link_option(option, "Ttext=", &p)) {
1535             s->text_addr = strtoull(p, &end, 16);
1536             s->has_text_addr = 1;
1537         } else if (link_option(option, "init=", &p)) {
1538             copy_linker_arg(&s->init_symbol, p, 0);
1539             ignoring = 1;
1540         } else if (link_option(option, "oformat=", &p)) {
1541 #if defined(TCC_TARGET_PE)
1542             if (strstart("pe-", &p)) {
1543 #elif PTR_SIZE == 8
1544             if (strstart("elf64-", &p)) {
1545 #else
1546             if (strstart("elf32-", &p)) {
1547 #endif
1548                 s->output_format = TCC_OUTPUT_FORMAT_ELF;
1549             } else if (!strcmp(p, "binary")) {
1550                 s->output_format = TCC_OUTPUT_FORMAT_BINARY;
1551 #ifdef TCC_TARGET_COFF
1552             } else if (!strcmp(p, "coff")) {
1553                 s->output_format = TCC_OUTPUT_FORMAT_COFF;
1554 #endif
1555             } else
1556                 goto err;
1557
1558         } else if (link_option(option, "as-needed", &p)) {
1559             ignoring = 1;
1560         } else if (link_option(option, "O", &p)) {
1561             ignoring = 1;
1562         } else if (link_option(option, "export-all-symbols", &p)) {
1563             s->rdynamic = 1;
1564         } else if (link_option(option, "export-dynamic", &p)) {
1565             s->rdynamic = 1;
1566         } else if (link_option(option, "rpath=", &p)) {
1567             copy_linker_arg(&s->rpath, p, ':');
1568         } else if (link_option(option, "enable-new-dtags", &p)) {
1569             s->enable_new_dtags = 1;
1570         } else if (link_option(option, "section-alignment=", &p)) {
1571             s->section_align = strtoul(p, &end, 16);
1572         } else if (link_option(option, "soname=", &p)) {
1573             copy_linker_arg(&s->soname, p, 0);
1574 #ifdef TCC_TARGET_PE
1575         } else if (link_option(option, "large-address-aware", &p)) {
1576             s->pe_characteristics |= 0x20;
1577         } else if (link_option(option, "file-alignment=", &p)) {
1578             s->pe_file_align = strtoul(p, &end, 16);
1579         } else if (link_option(option, "stack=", &p)) {
1580             s->pe_stack_size = strtoul(p, &end, 10);
1581         } else if (link_option(option, "subsystem=", &p)) {
1582 #if defined(TCC_TARGET_I386) || defined(TCC_TARGET_X86_64)
1583             if (!strcmp(p, "native")) {
1584                 s->pe_subsystem = 1;
1585             } else if (!strcmp(p, "console")) {
1586                 s->pe_subsystem = 3;
1587             } else if (!strcmp(p, "gui") || !strcmp(p, "windows")) {
1588                 s->pe_subsystem = 2;
1589             } else if (!strcmp(p, "posix")) {
1590                 s->pe_subsystem = 7;
1591             } else if (!strcmp(p, "efiapp")) {
1592                 s->pe_subsystem = 10;
1593             } else if (!strcmp(p, "efiboot")) {
1594                 s->pe_subsystem = 11;
1595             } else if (!strcmp(p, "efiruntime")) {
1596                 s->pe_subsystem = 12;
1597             } else if (!strcmp(p, "efirom")) {
1598                 s->pe_subsystem = 13;
1599 #elif defined(TCC_TARGET_ARM)
1600             if (!strcmp(p, "wince")) {
1601                 s->pe_subsystem = 9;
1602 #endif
1603             } else
1604                 goto err;
1605 #endif
1606         } else if (ret = link_option(option, "?whole-archive", &p), ret) {
1607             if (ret > 0)
1608                 s->filetype |= AFF_WHOLE_ARCHIVE;
1609             else
1610                 s->filetype &= ~AFF_WHOLE_ARCHIVE;
1611         } else if (p) {
1612             return 0;
1613         } else {
1614     err:
1615             tcc_error("unsupported linker option '%s'", option);
1616         }
1617
1618         if (ignoring && s->warn_unsupported)
1619             tcc_warning("unsupported linker option '%s'", option);
1620
1621         option = skip_linker_arg(&p);
1622     }
1623     return 1;
1624 }
1625
1626 typedef struct TCCOption {
1627     const char *name;
1628     uint16_t index;
1629     uint16_t flags;
1630 } TCCOption;
1631
1632 enum {
1633     TCC_OPTION_HELP,
1634     TCC_OPTION_HELP2,
1635     TCC_OPTION_v,
1636     TCC_OPTION_I,
1637     TCC_OPTION_D,
1638     TCC_OPTION_U,
1639     TCC_OPTION_P,
1640     TCC_OPTION_L,
1641     TCC_OPTION_B,
1642     TCC_OPTION_l,
1643     TCC_OPTION_bench,
1644     TCC_OPTION_bt,
1645     TCC_OPTION_b,
1646     TCC_OPTION_ba,
1647     TCC_OPTION_g,
1648     TCC_OPTION_c,
1649     TCC_OPTION_dumpversion,
1650     TCC_OPTION_d,
1651     TCC_OPTION_static,
1652     TCC_OPTION_std,
1653     TCC_OPTION_shared,
1654     TCC_OPTION_soname,
1655     TCC_OPTION_o,
1656     TCC_OPTION_r,
1657     TCC_OPTION_s,
1658     TCC_OPTION_traditional,
1659     TCC_OPTION_Wl,
1660     TCC_OPTION_Wp,
1661     TCC_OPTION_W,
1662     TCC_OPTION_O,
1663     TCC_OPTION_mfloat_abi,
1664     TCC_OPTION_m,
1665     TCC_OPTION_f,
1666     TCC_OPTION_isystem,
1667     TCC_OPTION_iwithprefix,
1668     TCC_OPTION_include,
1669     TCC_OPTION_nostdinc,
1670     TCC_OPTION_nostdlib,
1671     TCC_OPTION_print_search_dirs,
1672     TCC_OPTION_rdynamic,
1673     TCC_OPTION_param,
1674     TCC_OPTION_pedantic,
1675     TCC_OPTION_pthread,
1676     TCC_OPTION_run,
1677     TCC_OPTION_w,
1678     TCC_OPTION_pipe,
1679     TCC_OPTION_E,
1680     TCC_OPTION_MD,
1681     TCC_OPTION_MF,
1682     TCC_OPTION_x,
1683     TCC_OPTION_ar,
1684     TCC_OPTION_impdef,
1685     TCC_OPTION_C
1686 };
1687
1688 #define TCC_OPTION_HAS_ARG 0x0001
1689 #define TCC_OPTION_NOSEP   0x0002 /* cannot have space before option and arg */
1690
1691 static const TCCOption tcc_options[] = {
1692     { "h", TCC_OPTION_HELP, 0 },
1693     { "-help", TCC_OPTION_HELP, 0 },
1694     { "?", TCC_OPTION_HELP, 0 },
1695     { "hh", TCC_OPTION_HELP2, 0 },
1696     { "v", TCC_OPTION_v, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1697     { "-version", TCC_OPTION_v, 0 }, /* handle as verbose, also prints version*/
1698     { "I", TCC_OPTION_I, TCC_OPTION_HAS_ARG },
1699     { "D", TCC_OPTION_D, TCC_OPTION_HAS_ARG },
1700     { "U", TCC_OPTION_U, TCC_OPTION_HAS_ARG },
1701     { "P", TCC_OPTION_P, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1702     { "L", TCC_OPTION_L, TCC_OPTION_HAS_ARG },
1703     { "B", TCC_OPTION_B, TCC_OPTION_HAS_ARG },
1704     { "l", TCC_OPTION_l, TCC_OPTION_HAS_ARG },
1705     { "bench", TCC_OPTION_bench, 0 },
1706 #ifdef CONFIG_TCC_BACKTRACE
1707     { "bt", TCC_OPTION_bt, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1708 #endif
1709 #ifdef CONFIG_TCC_BCHECK
1710     { "b", TCC_OPTION_b, 0 },
1711 #endif
1712     { "g", TCC_OPTION_g, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1713     { "c", TCC_OPTION_c, 0 },
1714     { "dumpversion", TCC_OPTION_dumpversion, 0},
1715     { "d", TCC_OPTION_d, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1716     { "static", TCC_OPTION_static, 0 },
1717     { "std", TCC_OPTION_std, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1718     { "shared", TCC_OPTION_shared, 0 },
1719     { "soname", TCC_OPTION_soname, TCC_OPTION_HAS_ARG },
1720     { "o", TCC_OPTION_o, TCC_OPTION_HAS_ARG },
1721     { "-param", TCC_OPTION_param, TCC_OPTION_HAS_ARG },
1722     { "pedantic", TCC_OPTION_pedantic, 0},
1723     { "pthread", TCC_OPTION_pthread, 0},
1724     { "run", TCC_OPTION_run, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1725     { "rdynamic", TCC_OPTION_rdynamic, 0 },
1726     { "r", TCC_OPTION_r, 0 },
1727     { "s", TCC_OPTION_s, 0 },
1728     { "traditional", TCC_OPTION_traditional, 0 },
1729     { "Wl,", TCC_OPTION_Wl, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1730     { "Wp,", TCC_OPTION_Wp, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1731     { "W", TCC_OPTION_W, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1732     { "O", TCC_OPTION_O, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1733 #ifdef TCC_TARGET_ARM
1734     { "mfloat-abi", TCC_OPTION_mfloat_abi, TCC_OPTION_HAS_ARG },
1735 #endif
1736     { "m", TCC_OPTION_m, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1737     { "f", TCC_OPTION_f, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1738     { "isystem", TCC_OPTION_isystem, TCC_OPTION_HAS_ARG },
1739     { "include", TCC_OPTION_include, TCC_OPTION_HAS_ARG },
1740     { "nostdinc", TCC_OPTION_nostdinc, 0 },
1741     { "nostdlib", TCC_OPTION_nostdlib, 0 },
1742     { "print-search-dirs", TCC_OPTION_print_search_dirs, 0 },
1743     { "w", TCC_OPTION_w, 0 },
1744     { "pipe", TCC_OPTION_pipe, 0},
1745     { "E", TCC_OPTION_E, 0},
1746     { "MD", TCC_OPTION_MD, 0},
1747     { "MF", TCC_OPTION_MF, TCC_OPTION_HAS_ARG },
1748     { "x", TCC_OPTION_x, TCC_OPTION_HAS_ARG },
1749     { "ar", TCC_OPTION_ar, 0},
1750 #ifdef TCC_TARGET_PE
1751     { "impdef", TCC_OPTION_impdef, 0},
1752 #endif
1753     { "C", TCC_OPTION_C, 0},
1754     { NULL, 0, 0 },
1755 };
1756
1757 static const FlagDef options_W[] = {
1758     { 0, 0, "all" },
1759     { offsetof(TCCState, warn_unsupported), 0, "unsupported" },
1760     { offsetof(TCCState, warn_write_strings), 0, "write-strings" },
1761     { offsetof(TCCState, warn_error), 0, "error" },
1762     { offsetof(TCCState, warn_gcc_compat), 0, "gcc-compat" },
1763     { offsetof(TCCState, warn_implicit_function_declaration), WD_ALL,
1764       "implicit-function-declaration" },
1765     { 0, 0, NULL }
1766 };
1767
1768 static const FlagDef options_f[] = {
1769     { offsetof(TCCState, char_is_unsigned), 0, "unsigned-char" },
1770     { offsetof(TCCState, char_is_unsigned), FD_INVERT, "signed-char" },
1771     { offsetof(TCCState, nocommon), FD_INVERT, "common" },
1772     { offsetof(TCCState, leading_underscore), 0, "leading-underscore" },
1773     { offsetof(TCCState, ms_extensions), 0, "ms-extensions" },
1774     { offsetof(TCCState, dollars_in_identifiers), 0, "dollars-in-identifiers" },
1775     { 0, 0, NULL }
1776 };
1777
1778 static const FlagDef options_m[] = {
1779     { offsetof(TCCState, ms_bitfields), 0, "ms-bitfields" },
1780 #ifdef TCC_TARGET_X86_64
1781     { offsetof(TCCState, nosse), FD_INVERT, "sse" },
1782 #endif
1783     { 0, 0, NULL }
1784 };
1785
1786 static void args_parser_add_file(TCCState *s, const char* filename, int filetype)
1787 {
1788     struct filespec *f = tcc_malloc(sizeof *f + strlen(filename));
1789     f->type = filetype;
1790     strcpy(f->name, filename);
1791     dynarray_add(&s->files, &s->nb_files, f);
1792 }
1793
1794 static int args_parser_make_argv(const char *r, int *argc, char ***argv)
1795 {
1796     int ret = 0, q, c;
1797     CString str;
1798     for(;;) {
1799         while (c = (unsigned char)*r, c && c <= ' ')
1800           ++r;
1801         if (c == 0)
1802             break;
1803         q = 0;
1804         cstr_new(&str);
1805         while (c = (unsigned char)*r, c) {
1806             ++r;
1807             if (c == '\\' && (*r == '"' || *r == '\\')) {
1808                 c = *r++;
1809             } else if (c == '"') {
1810                 q = !q;
1811                 continue;
1812             } else if (q == 0 && c <= ' ') {
1813                 break;
1814             }
1815             cstr_ccat(&str, c);
1816         }
1817         cstr_ccat(&str, 0);
1818         //printf("<%s>\n", str.data), fflush(stdout);
1819         dynarray_add(argv, argc, tcc_strdup(str.data));
1820         cstr_free(&str);
1821         ++ret;
1822     }
1823     return ret;
1824 }
1825
1826 /* read list file */
1827 static void args_parser_listfile(TCCState *s,
1828     const char *filename, int optind, int *pargc, char ***pargv)
1829 {
1830     TCCState *s1 = s;
1831     int fd, i;
1832     size_t len;
1833     char *p;
1834     int argc = 0;
1835     char **argv = NULL;
1836
1837     fd = open(filename, O_RDONLY | O_BINARY);
1838     if (fd < 0)
1839         tcc_error("listfile '%s' not found", filename);
1840
1841     len = lseek(fd, 0, SEEK_END);
1842     p = tcc_malloc(len + 1), p[len] = 0;
1843     lseek(fd, 0, SEEK_SET), read(fd, p, len), close(fd);
1844
1845     for (i = 0; i < *pargc; ++i)
1846         if (i == optind)
1847             args_parser_make_argv(p, &argc, &argv);
1848         else
1849             dynarray_add(&argv, &argc, tcc_strdup((*pargv)[i]));
1850
1851     tcc_free(p);
1852     dynarray_reset(&s->argv, &s->argc);
1853     *pargc = s->argc = argc, *pargv = s->argv = argv;
1854 }
1855
1856 PUB_FUNC int tcc_parse_args(TCCState *s, int *pargc, char ***pargv, int optind)
1857 {
1858     TCCState *s1 = s;
1859     const TCCOption *popt;
1860     const char *optarg, *r;
1861     const char *run = NULL;
1862     int x;
1863     CString linker_arg; /* collect -Wl options */
1864     int tool = 0, arg_start = 0, noaction = optind;
1865     char **argv = *pargv;
1866     int argc = *pargc;
1867
1868     cstr_new(&linker_arg);
1869
1870     while (optind < argc) {
1871         r = argv[optind];
1872         if (r[0] == '@' && r[1] != '\0') {
1873             args_parser_listfile(s, r + 1, optind, &argc, &argv);
1874             continue;
1875         }
1876         optind++;
1877         if (tool) {
1878             if (r[0] == '-' && r[1] == 'v' && r[2] == 0)
1879                 ++s->verbose;
1880             continue;
1881         }
1882 reparse:
1883         if (r[0] != '-' || r[1] == '\0') {
1884             if (r[0] != '@') /* allow "tcc file(s) -run @ args ..." */
1885                 args_parser_add_file(s, r, s->filetype);
1886             if (run) {
1887                 tcc_set_options(s, run);
1888                 arg_start = optind - 1;
1889                 break;
1890             }
1891             continue;
1892         }
1893
1894         /* find option in table */
1895         for(popt = tcc_options; ; ++popt) {
1896             const char *p1 = popt->name;
1897             const char *r1 = r + 1;
1898             if (p1 == NULL)
1899                 tcc_error("invalid option -- '%s'", r);
1900             if (!strstart(p1, &r1))
1901                 continue;
1902             optarg = r1;
1903             if (popt->flags & TCC_OPTION_HAS_ARG) {
1904                 if (*r1 == '\0' && !(popt->flags & TCC_OPTION_NOSEP)) {
1905                     if (optind >= argc)
1906                 arg_err:
1907                         tcc_error("argument to '%s' is missing", r);
1908                     optarg = argv[optind++];
1909                 }
1910             } else if (*r1 != '\0')
1911                 continue;
1912             break;
1913         }
1914
1915         switch(popt->index) {
1916         case TCC_OPTION_HELP:
1917             x = OPT_HELP;
1918             goto extra_action;
1919         case TCC_OPTION_HELP2:
1920             x = OPT_HELP2;
1921             goto extra_action;
1922         case TCC_OPTION_I:
1923             tcc_add_include_path(s, optarg);
1924             break;
1925         case TCC_OPTION_D:
1926             tcc_define_symbol(s, optarg, NULL);
1927             break;
1928         case TCC_OPTION_U:
1929             tcc_undefine_symbol(s, optarg);
1930             break;
1931         case TCC_OPTION_L:
1932             tcc_add_library_path(s, optarg);
1933             break;
1934         case TCC_OPTION_B:
1935             /* set tcc utilities path (mainly for tcc development) */
1936             tcc_set_lib_path(s, optarg);
1937             break;
1938         case TCC_OPTION_l:
1939             args_parser_add_file(s, optarg, AFF_TYPE_LIB | (s->filetype & ~AFF_TYPE_MASK));
1940             s->nb_libraries++;
1941             break;
1942         case TCC_OPTION_pthread:
1943             s->option_pthread = 1;
1944             break;
1945         case TCC_OPTION_bench:
1946             s->do_bench = 1;
1947             break;
1948 #ifdef CONFIG_TCC_BACKTRACE
1949         case TCC_OPTION_bt:
1950             s->rt_num_callers = atoi(optarg);
1951             s->do_backtrace = 1;
1952             s->do_debug = 1;
1953             break;
1954 #endif
1955 #ifdef CONFIG_TCC_BCHECK
1956         case TCC_OPTION_b:
1957             s->do_bounds_check = 1;
1958             s->do_backtrace = 1;
1959             s->do_debug = 1;
1960             break;
1961 #endif
1962         case TCC_OPTION_g:
1963             s->do_debug = 1;
1964             break;
1965         case TCC_OPTION_c:
1966             x = TCC_OUTPUT_OBJ;
1967         set_output_type:
1968             if (s->output_type)
1969                 tcc_warning("-%s: overriding compiler action already specified", popt->name);
1970             s->output_type = x;
1971             break;
1972         case TCC_OPTION_d:
1973             if (*optarg == 'D')
1974                 s->dflag = 3;
1975             else if (*optarg == 'M')
1976                 s->dflag = 7;
1977             else if (*optarg == 't')
1978                 s->dflag = 16;
1979             else if (isnum(*optarg))
1980                 s->g_debug |= atoi(optarg);
1981             else
1982                 goto unsupported_option;
1983             break;
1984         case TCC_OPTION_static:
1985             s->static_link = 1;
1986             break;
1987         case TCC_OPTION_std:
1988             if (strcmp(optarg, "=c11") == 0)
1989                 s->cversion = 201112;
1990             break;
1991         case TCC_OPTION_shared:
1992             x = TCC_OUTPUT_DLL;
1993             goto set_output_type;
1994         case TCC_OPTION_soname:
1995             s->soname = tcc_strdup(optarg);
1996             break;
1997         case TCC_OPTION_o:
1998             if (s->outfile) {
1999                 tcc_warning("multiple -o option");
2000                 tcc_free(s->outfile);
2001             }
2002             s->outfile = tcc_strdup(optarg);
2003             break;
2004         case TCC_OPTION_r:
2005             /* generate a .o merging several output files */
2006             s->option_r = 1;
2007             x = TCC_OUTPUT_OBJ;
2008             goto set_output_type;
2009         case TCC_OPTION_isystem:
2010             tcc_add_sysinclude_path(s, optarg);
2011             break;
2012         case TCC_OPTION_include:
2013             cstr_printf(&s->cmdline_incl, "#include \"%s\"\n", optarg);
2014             break;
2015         case TCC_OPTION_nostdinc:
2016             s->nostdinc = 1;
2017             break;
2018         case TCC_OPTION_nostdlib:
2019             s->nostdlib = 1;
2020             break;
2021         case TCC_OPTION_run:
2022 #ifndef TCC_IS_NATIVE
2023             tcc_error("-run is not available in a cross compiler");
2024 #endif
2025             run = optarg;
2026             x = TCC_OUTPUT_MEMORY;
2027             goto set_output_type;
2028         case TCC_OPTION_v:
2029             do ++s->verbose; while (*optarg++ == 'v');
2030             ++noaction;
2031             break;
2032         case TCC_OPTION_f:
2033             if (set_flag(s, options_f, optarg) < 0)
2034                 goto unsupported_option;
2035             break;
2036 #ifdef TCC_TARGET_ARM
2037         case TCC_OPTION_mfloat_abi:
2038             /* tcc doesn't support soft float yet */
2039             if (!strcmp(optarg, "softfp")) {
2040                 s->float_abi = ARM_SOFTFP_FLOAT;
2041                 tcc_undefine_symbol(s, "__ARM_PCS_VFP");
2042             } else if (!strcmp(optarg, "hard"))
2043                 s->float_abi = ARM_HARD_FLOAT;
2044             else
2045                 tcc_error("unsupported float abi '%s'", optarg);
2046             break;
2047 #endif
2048         case TCC_OPTION_m:
2049             if (set_flag(s, options_m, optarg) < 0) {
2050                 if (x = atoi(optarg), x != 32 && x != 64)
2051                     goto unsupported_option;
2052                 if (PTR_SIZE != x/8)
2053                     return x;
2054                 ++noaction;
2055             }
2056             break;
2057         case TCC_OPTION_W:
2058             s->warn_none = 0;
2059             if (optarg[0] && set_flag(s, options_W, optarg) < 0)
2060                 goto unsupported_option;
2061             break;
2062         case TCC_OPTION_w:
2063             s->warn_none = 1;
2064             break;
2065         case TCC_OPTION_rdynamic:
2066             s->rdynamic = 1;
2067             break;
2068         case TCC_OPTION_Wl:
2069             if (linker_arg.size)
2070                 --linker_arg.size, cstr_ccat(&linker_arg, ',');
2071             cstr_cat(&linker_arg, optarg, 0);
2072             if (tcc_set_linker(s, linker_arg.data))
2073                 cstr_free(&linker_arg);
2074             break;
2075         case TCC_OPTION_Wp:
2076             r = optarg;
2077             goto reparse;
2078         case TCC_OPTION_E:
2079             x = TCC_OUTPUT_PREPROCESS;
2080             goto set_output_type;
2081         case TCC_OPTION_P:
2082             s->Pflag = atoi(optarg) + 1;
2083             break;
2084         case TCC_OPTION_MD:
2085             s->gen_deps = 1;
2086             break;
2087         case TCC_OPTION_MF:
2088             s->deps_outfile = tcc_strdup(optarg);
2089             break;
2090         case TCC_OPTION_dumpversion:
2091             printf ("%s\n", TCC_VERSION);
2092             exit(0);
2093             break;
2094         case TCC_OPTION_x:
2095             x = 0;
2096             if (*optarg == 'c')
2097                 x = AFF_TYPE_C;
2098             else if (*optarg == 'a')
2099                 x = AFF_TYPE_ASMPP;
2100             else if (*optarg == 'b')
2101                 x = AFF_TYPE_BIN;
2102             else if (*optarg == 'n')
2103                 x = AFF_TYPE_NONE;
2104             else
2105                 tcc_warning("unsupported language '%s'", optarg);
2106             s->filetype = x | (s->filetype & ~AFF_TYPE_MASK);
2107             break;
2108         case TCC_OPTION_O:
2109             s->optimize = atoi(optarg);
2110             break;
2111         case TCC_OPTION_print_search_dirs:
2112             x = OPT_PRINT_DIRS;
2113             goto extra_action;
2114         case TCC_OPTION_impdef:
2115             x = OPT_IMPDEF;
2116             goto extra_action;
2117         case TCC_OPTION_ar:
2118             x = OPT_AR;
2119         extra_action:
2120             arg_start = optind - 1;
2121             if (arg_start != noaction)
2122                 tcc_error("cannot parse %s here", r);
2123             tool = x;
2124             break;
2125         case TCC_OPTION_traditional:
2126         case TCC_OPTION_pedantic:
2127         case TCC_OPTION_pipe:
2128         case TCC_OPTION_s:
2129         case TCC_OPTION_C:
2130             /* ignored */
2131             break;
2132         default:
2133 unsupported_option:
2134             if (s->warn_unsupported)
2135                 tcc_warning("unsupported option '%s'", r);
2136             break;
2137         }
2138     }
2139     if (linker_arg.size) {
2140         r = linker_arg.data;
2141         goto arg_err;
2142     }
2143     *pargc = argc - arg_start;
2144     *pargv = argv + arg_start;
2145     if (tool)
2146         return tool;
2147     if (optind != noaction)
2148         return 0;
2149     if (s->verbose == 2)
2150         return OPT_PRINT_DIRS;
2151     if (s->verbose)
2152         return OPT_V;
2153     return OPT_HELP;
2154 }
2155
2156 LIBTCCAPI void tcc_set_options(TCCState *s, const char *r)
2157 {
2158     char **argv = NULL;
2159     int argc = 0;
2160     args_parser_make_argv(r, &argc, &argv);
2161     tcc_parse_args(s, &argc, &argv, 0);
2162     dynarray_reset(&argv, &argc);
2163 }
2164
2165 PUB_FUNC void tcc_print_stats(TCCState *s1, unsigned total_time)
2166 {
2167     if (total_time < 1)
2168         total_time = 1;
2169     if (total_bytes < 1)
2170         total_bytes = 1;
2171     fprintf(stderr, "* %d idents, %d lines, %d bytes\n"
2172                     "* %0.3f s, %u lines/s, %0.1f MB/s\n",
2173            total_idents, total_lines, total_bytes,
2174            (double)total_time/1000,
2175            (unsigned)total_lines*1000/total_time,
2176            (double)total_bytes/1000/total_time);
2177     fprintf(stderr, "* text %d, data %d, bss %d bytes\n",
2178            s1->total_output[0], s1->total_output[1], s1->total_output[2]);
2179 #ifdef MEM_DEBUG
2180     fprintf(stderr, "* %d bytes memory used\n", mem_max_size);
2181 #endif
2182 }