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