libtcc.c

   1 /*
   2  *  TCC - Tiny C Compiler
   3  *
   4  *  Copyright (c) 2001-2004 Fabrice Bellard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #if !defined ONE_SOURCE || ONE_SOURCE
  22 #include "tccpp.c"
  23 #include "tccgen.c"
  24 #include "tccdbg.c"
  25 #include "tccasm.c"
  26 #include "tccelf.c"
  27 #include "tccrun.c"
  28 #ifdef TCC_TARGET_I386
  29 #include "i386-gen.c"
  30 #include "i386-link.c"
  31 #include "i386-asm.c"
  32 #elif defined(TCC_TARGET_ARM)
  33 #include "arm-gen.c"
  34 #include "arm-link.c"
  35 #include "arm-asm.c"
  36 #elif defined(TCC_TARGET_ARM64)
  37 #include "arm64-gen.c"
  38 #include "arm64-link.c"
  39 #include "arm-asm.c"
  40 #elif defined(TCC_TARGET_C67)
  41 #include "c67-gen.c"
  42 #include "c67-link.c"
  43 #include "tcccoff.c"
  44 #elif defined(TCC_TARGET_X86_64)
  45 #include "x86_64-gen.c"
  46 #include "x86_64-link.c"
  47 #include "i386-asm.c"
  48 #elif defined(TCC_TARGET_RISCV64)
  49 #include "riscv64-gen.c"
  50 #include "riscv64-link.c"
  51 #include "riscv64-asm.c"
  52 #else
  53 #error unknown target
  54 #endif
  55 #ifdef TCC_TARGET_PE
  56 #include "tccpe.c"
  57 #endif
  58 #ifdef TCC_TARGET_MACHO
  59 #include "tccmacho.c"
  60 #endif
  61 #endif /* ONE_SOURCE */
  62
  63 #include "tcc.h"
  64
  65 /********************************************************/
  66 /* global variables */
  67
  68 /* XXX: get rid of this ASAP (or maybe not) */
  69 ST_DATA struct TCCState *tcc_state;
  70 TCC_SEM(static tcc_compile_sem);
  71 /* an array of pointers to memory to be free'd after errors */
  72 ST_DATA void** stk_data;
  73 ST_DATA int nb_stk_data;
  74
  75 /********************************************************/
  76 #ifdef _WIN32
  77 ST_FUNC char *normalize_slashes(char *path)
  78 {
  79     char *p;
  80     for (p = path; *p; ++p)
  81         if (*p == '\\')
  82             *p = '/';
  83     return path;
  84 }
  85
  86 #if defined LIBTCC_AS_DLL && !defined CONFIG_TCCDIR
  87 static HMODULE tcc_module;
  88 BOOL WINAPI DllMain (HINSTANCE hDll, DWORD dwReason, LPVOID lpReserved)
  89 {
  90     if (DLL_PROCESS_ATTACH == dwReason)
  91         tcc_module = hDll;
  92     return TRUE;
  93 }
  94 #else
  95 #define tcc_module NULL /* NULL means executable itself */
  96 #endif
  97
  98 #ifndef CONFIG_TCCDIR
  99 /* on win32, we suppose the lib and includes are at the location of 'tcc.exe' */
 100 static inline char *config_tccdir_w32(char *path)
 101 {
 102     char *p;
 103     GetModuleFileName(tcc_module, path, MAX_PATH);
 104     p = tcc_basename(normalize_slashes(strlwr(path)));
 105     if (p > path)
 106         --p;
 107     *p = 0;
 108     return path;
 109 }
 110 #define CONFIG_TCCDIR config_tccdir_w32(alloca(MAX_PATH))
 111 #endif
 112
 113 #ifdef TCC_TARGET_PE
 114 static void tcc_add_systemdir(TCCState *s)
 115 {
 116     char buf[1000];
 117     GetSystemDirectory(buf, sizeof buf);
 118     tcc_add_library_path(s, normalize_slashes(buf));
 119 }
 120 #endif
 121 #endif
 122
 123 /********************************************************/
 124 #if CONFIG_TCC_SEMLOCK
 125 #if defined _WIN32
 126 ST_FUNC void wait_sem(TCCSem *p)
 127 {
 128     if (!p->init)
 129         InitializeCriticalSection(&p->cr), p->init = 1;
 130     EnterCriticalSection(&p->cr);
 131 }
 132 ST_FUNC void post_sem(TCCSem *p)
 133 {
 134     LeaveCriticalSection(&p->cr);
 135 }
 136 #elif defined __APPLE__
 137 /* Half-compatible MacOS doesn't have non-shared (process local)
 138    semaphores.  Use the dispatch framework for lightweight locks.  */
 139 ST_FUNC void wait_sem(TCCSem *p)
 140 {
 141     if (!p->init)
 142         p->sem = dispatch_semaphore_create(1), p->init = 1;
 143     dispatch_semaphore_wait(p->sem, DISPATCH_TIME_FOREVER);
 144 }
 145 ST_FUNC void post_sem(TCCSem *p)
 146 {
 147     dispatch_semaphore_signal(p->sem);
 148 }
 149 #else
 150 ST_FUNC void wait_sem(TCCSem *p)
 151 {
 152     if (!p->init)
 153         sem_init(&p->sem, 0, 1), p->init = 1;
 154     while (sem_wait(&p->sem) < 0 && errno == EINTR);
 155 }
 156 ST_FUNC void post_sem(TCCSem *p)
 157 {
 158     sem_post(&p->sem);
 159 }
 160 #endif
 161 #endif
 162
 163 PUB_FUNC void tcc_enter_state(TCCState *s1)
 164 {
 165     if (s1->error_set_jmp_enabled)
 166         return;
 167     WAIT_SEM(&tcc_compile_sem);
 168     tcc_state = s1;
 169 }
 170
 171 PUB_FUNC void tcc_exit_state(TCCState *s1)
 172 {
 173     if (s1->error_set_jmp_enabled)
 174         return;
 175     tcc_state = NULL;
 176     POST_SEM(&tcc_compile_sem);
 177 }
 178
 179 /********************************************************/
 180 /* copy a string and truncate it. */
 181 ST_FUNC char *pstrcpy(char *buf, size_t buf_size, const char *s)
 182 {
 183     char *q, *q_end;
 184     int c;
 185
 186     if (buf_size > 0) {
 187         q = buf;
 188         q_end = buf + buf_size - 1;
 189         while (q < q_end) {
 190             c = *s++;
 191             if (c == '\0')
 192                 break;
 193             *q++ = c;
 194         }
 195         *q = '\0';
 196     }
 197     return buf;
 198 }
 199
 200 /* strcat and truncate. */
 201 ST_FUNC char *pstrcat(char *buf, size_t buf_size, const char *s)
 202 {
 203     size_t len;
 204     len = strlen(buf);
 205     if (len < buf_size)
 206         pstrcpy(buf + len, buf_size - len, s);
 207     return buf;
 208 }
 209
 210 ST_FUNC char *pstrncpy(char *out, const char *in, size_t num)
 211 {
 212     memcpy(out, in, num);
 213     out[num] = '\0';
 214     return out;
 215 }
 216
 217 /* extract the basename of a file */
 218 PUB_FUNC char *tcc_basename(const char *name)
 219 {
 220     char *p = strchr(name, 0);
 221     while (p > name && !IS_DIRSEP(p[-1]))
 222         --p;
 223     return p;
 224 }
 225
 226 /* extract extension part of a file
 227  *
 228  * (if no extension, return pointer to end-of-string)
 229  */
 230 PUB_FUNC char *tcc_fileextension (const char *name)
 231 {
 232     char *b = tcc_basename(name);
 233     char *e = strrchr(b, '.');
 234     return e ? e : strchr(b, 0);
 235 }
 236
 237 ST_FUNC char *tcc_load_text(int fd)
 238 {
 239     int len = lseek(fd, 0, SEEK_END);
 240     char *buf = load_data(fd, 0, len + 1);
 241     buf[len] = 0;
 242     return buf;
 243 }
 244
 245 /********************************************************/
 246 /* memory management */
 247
 248 #undef free
 249 #undef malloc
 250 #undef realloc
 251
 252 void mem_error(const char *msg)
 253 {
 254     fprintf(stderr, "%s\n", msg);
 255     exit (1);
 256 }
 257
 258 #ifndef MEM_DEBUG
 259
 260 PUB_FUNC void tcc_free(void *ptr)
 261 {
 262     free(ptr);
 263 }
 264
 265 PUB_FUNC void *tcc_malloc(unsigned long size)
 266 {
 267     void *ptr;
 268     ptr = malloc(size);
 269     if (!ptr && size)
 270         mem_error("memory full (malloc)");
 271     return ptr;
 272 }
 273
 274 PUB_FUNC void *tcc_mallocz(unsigned long size)
 275 {
 276     void *ptr;
 277     ptr = tcc_malloc(size);
 278     if (size)
 279         memset(ptr, 0, size);
 280     return ptr;
 281 }
 282
 283 PUB_FUNC void *tcc_realloc(void *ptr, unsigned long size)
 284 {
 285     void *ptr1;
 286     ptr1 = realloc(ptr, size);
 287     if (!ptr1 && size)
 288         mem_error("memory full (realloc)");
 289     return ptr1;
 290 }
 291
 292 PUB_FUNC char *tcc_strdup(const char *str)
 293 {
 294     char *ptr;
 295     ptr = tcc_malloc(strlen(str) + 1);
 296     strcpy(ptr, str);
 297     return ptr;
 298 }
 299
 300 #else
 301
 302 #define MEM_DEBUG_MAGIC1 0xFEEDDEB1
 303 #define MEM_DEBUG_MAGIC2 0xFEEDDEB2
 304 #define MEM_DEBUG_MAGIC3 0xFEEDDEB3
 305 #define MEM_DEBUG_FILE_LEN 40
 306 #define MEM_DEBUG_CHECK3(header) \
 307     ((mem_debug_header_t*)((char*)header + header->size))->magic3
 308 #define MEM_USER_PTR(header) \
 309     ((char *)header + offsetof(mem_debug_header_t, magic3))
 310 #define MEM_HEADER_PTR(ptr) \
 311     (mem_debug_header_t *)((char*)ptr - offsetof(mem_debug_header_t, magic3))
 312
 313 struct mem_debug_header {
 314     unsigned magic1;
 315     unsigned size;
 316     struct mem_debug_header *prev;
 317     struct mem_debug_header *next;
 318     int line_num;
 319     char file_name[MEM_DEBUG_FILE_LEN + 1];
 320     unsigned magic2;
 321     ALIGNED(16) unsigned char magic3[4];
 322 };
 323
 324 typedef struct mem_debug_header mem_debug_header_t;
 325
 326 TCC_SEM(static mem_sem);
 327 static mem_debug_header_t *mem_debug_chain;
 328 static unsigned mem_cur_size;
 329 static unsigned mem_max_size;
 330 static int nb_states;
 331
 332 static mem_debug_header_t *malloc_check(void *ptr, const char *msg)
 333 {
 334     mem_debug_header_t * header = MEM_HEADER_PTR(ptr);
 335     if (header->magic1 != MEM_DEBUG_MAGIC1 ||
 336         header->magic2 != MEM_DEBUG_MAGIC2 ||
 337         read32le(MEM_DEBUG_CHECK3(header)) != MEM_DEBUG_MAGIC3 ||
 338         header->size == (unsigned)-1) {
 339         fprintf(stderr, "%s check failed\n", msg);
 340         if (header->magic1 == MEM_DEBUG_MAGIC1)
 341             fprintf(stderr, "%s:%u: block allocated here.\n",
 342                 header->file_name, header->line_num);
 343         exit(1);
 344     }
 345     return header;
 346 }
 347
 348 PUB_FUNC void *tcc_malloc_debug(unsigned long size, const char *file, int line)
 349 {
 350     int ofs;
 351     mem_debug_header_t *header;
 352
 353     header = malloc(sizeof(mem_debug_header_t) + size);
 354     if (!header)
 355         mem_error("memory full (malloc)");
 356
 357     header->magic1 = MEM_DEBUG_MAGIC1;
 358     header->magic2 = MEM_DEBUG_MAGIC2;
 359     header->size = size;
 360     write32le(MEM_DEBUG_CHECK3(header), MEM_DEBUG_MAGIC3);
 361     header->line_num = line;
 362     ofs = strlen(file) - MEM_DEBUG_FILE_LEN;
 363     strncpy(header->file_name, file + (ofs > 0 ? ofs : 0), MEM_DEBUG_FILE_LEN);
 364     header->file_name[MEM_DEBUG_FILE_LEN] = 0;
 365
 366     WAIT_SEM(&mem_sem);
 367     header->next = mem_debug_chain;
 368     header->prev = NULL;
 369     if (header->next)
 370         header->next->prev = header;
 371     mem_debug_chain = header;
 372     mem_cur_size += size;
 373     if (mem_cur_size > mem_max_size)
 374         mem_max_size = mem_cur_size;
 375     POST_SEM(&mem_sem);
 376
 377     return MEM_USER_PTR(header);
 378 }
 379
 380 PUB_FUNC void tcc_free_debug(void *ptr)
 381 {
 382     mem_debug_header_t *header;
 383     if (!ptr)
 384         return;
 385     header = malloc_check(ptr, "tcc_free");
 386
 387     WAIT_SEM(&mem_sem);
 388     mem_cur_size -= header->size;
 389     header->size = (unsigned)-1;
 390     if (header->next)
 391         header->next->prev = header->prev;
 392     if (header->prev)
 393         header->prev->next = header->next;
 394     if (header == mem_debug_chain)
 395         mem_debug_chain = header->next;
 396     POST_SEM(&mem_sem);
 397     free(header);
 398 }
 399
 400 PUB_FUNC void *tcc_mallocz_debug(unsigned long size, const char *file, int line)
 401 {
 402     void *ptr;
 403     ptr = tcc_malloc_debug(size,file,line);
 404     memset(ptr, 0, size);
 405     return ptr;
 406 }
 407
 408 PUB_FUNC void *tcc_realloc_debug(void *ptr, unsigned long size, const char *file, int line)
 409 {
 410     mem_debug_header_t *header;
 411     int mem_debug_chain_update = 0;
 412     if (!ptr)
 413         return tcc_malloc_debug(size, file, line);
 414     header = malloc_check(ptr, "tcc_realloc");
 415
 416     WAIT_SEM(&mem_sem);
 417     mem_cur_size -= header->size;
 418     mem_debug_chain_update = (header == mem_debug_chain);
 419     header = realloc(header, sizeof(mem_debug_header_t) + size);
 420     if (!header)
 421         mem_error("memory full (realloc)");
 422     header->size = size;
 423     write32le(MEM_DEBUG_CHECK3(header), MEM_DEBUG_MAGIC3);
 424     if (header->next)
 425         header->next->prev = header;
 426     if (header->prev)
 427         header->prev->next = header;
 428     if (mem_debug_chain_update)
 429         mem_debug_chain = header;
 430     mem_cur_size += size;
 431     if (mem_cur_size > mem_max_size)
 432         mem_max_size = mem_cur_size;
 433     POST_SEM(&mem_sem);
 434
 435     return MEM_USER_PTR(header);
 436 }
 437
 438 PUB_FUNC char *tcc_strdup_debug(const char *str, const char *file, int line)
 439 {
 440     char *ptr;
 441     ptr = tcc_malloc_debug(strlen(str) + 1, file, line);
 442     strcpy(ptr, str);
 443     return ptr;
 444 }
 445
 446 PUB_FUNC void tcc_memcheck(int d)
 447 {
 448     WAIT_SEM(&mem_sem);
 449     nb_states += d;
 450     if (0 == nb_states && mem_cur_size) {
 451         mem_debug_header_t *header = mem_debug_chain;
 452         fflush(stdout);
 453         fprintf(stderr, "MEM_DEBUG: mem_leak= %d bytes, mem_max_size= %d bytes\n",
 454             mem_cur_size, mem_max_size);
 455         while (header) {
 456             fprintf(stderr, "%s:%u: error: %u bytes leaked\n",
 457                 header->file_name, header->line_num, header->size);
 458             header = header->next;
 459         }
 460         fflush(stderr);
 461         mem_cur_size = 0;
 462         mem_debug_chain = NULL;
 463 #if MEM_DEBUG-0 == 2
 464         exit(2);
 465 #endif
 466     }
 467     POST_SEM(&mem_sem);
 468 }
 469
 470 #endif /* MEM_DEBUG */
 471
 472 #ifdef _WIN32
 473 # define realpath(file, buf) _fullpath(buf, file, 260)
 474 #endif
 475
 476 /* for #pragma once */
 477 ST_FUNC int normalized_PATHCMP(const char *f1, const char *f2)
 478 {
 479     char *p1, *p2;
 480     int ret = 1;
 481     if (!!(p1 = realpath(f1, NULL))) {
 482         if (!!(p2 = realpath(f2, NULL))) {
 483             ret = PATHCMP(p1, p2);
 484             free(p2); /* using original free */
 485         }
 486         free(p1);
 487     }
 488     return ret;
 489 }
 490
 491 #define free(p) use_tcc_free(p)
 492 #define malloc(s) use_tcc_malloc(s)
 493 #define realloc(p, s) use_tcc_realloc(p, s)
 494
 495 /********************************************************/
 496 /* dynarrays */
 497
 498 ST_FUNC void dynarray_add(void *ptab, int *nb_ptr, void *data)
 499 {
 500     int nb, nb_alloc;
 501     void **pp;
 502
 503     nb = *nb_ptr;
 504     pp = *(void ***)ptab;
 505     /* every power of two we double array size */
 506     if ((nb & (nb - 1)) == 0) {
 507         if (!nb)
 508             nb_alloc = 1;
 509         else
 510             nb_alloc = nb * 2;
 511         pp = tcc_realloc(pp, nb_alloc * sizeof(void *));
 512         *(void***)ptab = pp;
 513     }
 514     pp[nb++] = data;
 515     *nb_ptr = nb;
 516 }
 517
 518 ST_FUNC void dynarray_reset(void *pp, int *n)
 519 {
 520     void **p;
 521     for (p = *(void***)pp; *n; ++p, --*n)
 522         if (*p)
 523             tcc_free(*p);
 524     tcc_free(*(void**)pp);
 525     *(void**)pp = NULL;
 526 }
 527
 528 static void tcc_split_path(TCCState *s, void *p_ary, int *p_nb_ary, const char *in)
 529 {
 530     const char *p;
 531     do {
 532         int c;
 533         CString str;
 534
 535         cstr_new(&str);
 536         for (p = in; c = *p, c != '\0' && c != PATHSEP[0]; ++p) {
 537             if (c == '{' && p[1] && p[2] == '}') {
 538                 c = p[1], p += 2;
 539                 if (c == 'B')
 540                     cstr_cat(&str, s->tcc_lib_path, -1);
 541                 if (c == 'R')
 542                     cstr_cat(&str, CONFIG_SYSROOT, -1);
 543                 if (c == 'f' && file) {
 544                     /* substitute current file's dir */
 545                     const char *f = file->true_filename;
 546                     const char *b = tcc_basename(f);
 547                     if (b > f)
 548                         cstr_cat(&str, f, b - f - 1);
 549                     else
 550                         cstr_cat(&str, ".", 1);
 551                 }
 552             } else {
 553                 cstr_ccat(&str, c);
 554             }
 555         }
 556         if (str.size) {
 557             cstr_ccat(&str, '\0');
 558             dynarray_add(p_ary, p_nb_ary, tcc_strdup(str.data));
 559         }
 560         cstr_free(&str);
 561         in = p+1;
 562     } while (*p);
 563 }
 564
 565 /********************************************************/
 566 /* warning / error */
 567
 568 /* warn_... option bits */
 569 #define WARN_ON  1 /* warning is on (-Woption) */
 570 #define WARN_ERR 2 /* warning is an error (-Werror=option) */
 571 #define WARN_NOE 4 /* warning is not an error (-Wno-error=option) */
 572
 573 /* error1() modes */
 574 enum { ERROR_WARN, ERROR_NOABORT, ERROR_ERROR };
 575
 576 static void error1(int mode, const char *fmt, va_list ap)
 577 {
 578     BufferedFile **pf, *f;
 579     TCCState *s1 = tcc_state;
 580     CString cs;
 581
 582     tcc_exit_state(s1);
 583
 584     if (mode == ERROR_WARN) {
 585         if (s1->warn_error)
 586             mode = ERROR_ERROR;
 587         if (s1->warn_num) {
 588             /* handle tcc_warning_c(warn_option)(fmt, ...) */
 589             int wopt = *(&s1->warn_none + s1->warn_num);
 590             s1->warn_num = 0;
 591             if (0 == (wopt & WARN_ON))
 592                 return;
 593             if (wopt & WARN_ERR)
 594                 mode = ERROR_ERROR;
 595             if (wopt & WARN_NOE)
 596                 mode = ERROR_WARN;
 597         }
 598         if (s1->warn_none)
 599             return;
 600     }
 601
 602     cstr_new(&cs);
 603     f = NULL;
 604     if (s1->error_set_jmp_enabled) { /* we're called while parsing a file */
 605         /* use upper file if inline ":asm:" or token ":paste:" */
 606         for (f = file; f && f->filename[0] == ':'; f = f->prev)
 607             ;
 608     }
 609     if (f) {
 610         for(pf = s1->include_stack; pf < s1->include_stack_ptr; pf++)
 611             cstr_printf(&cs, "In file included from %s:%d:\n",
 612                 (*pf)->filename, (*pf)->line_num - 1);
 613         cstr_printf(&cs, "%s:%d: ",
 614             f->filename, f->line_num - !!(tok_flags & TOK_FLAG_BOL));
 615     } else if (s1->current_filename) {
 616         cstr_printf(&cs, "%s: ", s1->current_filename);
 617     }
 618     if (0 == cs.size)
 619         cstr_printf(&cs, "tcc: ");
 620     cstr_printf(&cs, mode == ERROR_WARN ? "warning: " : "error: ");
 621     cstr_vprintf(&cs, fmt, ap);
 622     if (!s1 || !s1->error_func) {
 623         /* default case: stderr */
 624         if (s1 && s1->output_type == TCC_OUTPUT_PREPROCESS && s1->ppfp == stdout)
 625             printf("\n"); /* print a newline during tcc -E */
 626         fflush(stdout); /* flush -v output */
 627         fprintf(stderr, "%s\n", (char*)cs.data);
 628         fflush(stderr); /* print error/warning now (win32) */
 629     } else {
 630         s1->error_func(s1->error_opaque, (char*)cs.data);
 631     }
 632     cstr_free(&cs);
 633     if (mode != ERROR_WARN)
 634         s1->nb_errors++;
 635     if (mode == ERROR_ERROR && s1->error_set_jmp_enabled) {
 636         while (nb_stk_data)
 637             tcc_free(*(void**)stk_data[--nb_stk_data]);
 638         longjmp(s1->error_jmp_buf, 1);
 639     }
 640 }
 641
 642 LIBTCCAPI void tcc_set_error_func(TCCState *s, void *error_opaque, TCCErrorFunc error_func)
 643 {
 644     s->error_opaque = error_opaque;
 645     s->error_func = error_func;
 646 }
 647
 648 LIBTCCAPI TCCErrorFunc tcc_get_error_func(TCCState *s)
 649 {
 650     return s->error_func;
 651 }
 652
 653 LIBTCCAPI void *tcc_get_error_opaque(TCCState *s)
 654 {
 655     return s->error_opaque;
 656 }
 657
 658 /* error without aborting current compilation */
 659 PUB_FUNC int _tcc_error_noabort(const char *fmt, ...)
 660 {
 661     va_list ap;
 662     va_start(ap, fmt);
 663     error1(ERROR_NOABORT, fmt, ap);
 664     va_end(ap);
 665     return -1;
 666 }
 667
 668 #undef _tcc_error
 669 PUB_FUNC void _tcc_error(const char *fmt, ...)
 670 {
 671     va_list ap;
 672     va_start(ap, fmt);
 673     error1(ERROR_ERROR, fmt, ap);
 674     exit(1);
 675 }
 676 #define _tcc_error use_tcc_error_noabort
 677
 678 PUB_FUNC void _tcc_warning(const char *fmt, ...)
 679 {
 680     va_list ap;
 681     va_start(ap, fmt);
 682     error1(ERROR_WARN, fmt, ap);
 683     va_end(ap);
 684 }
 685
 686
 687 /********************************************************/
 688 /* I/O layer */
 689
 690 ST_FUNC void tcc_open_bf(TCCState *s1, const char *filename, int initlen)
 691 {
 692     BufferedFile *bf;
 693     int buflen = initlen ? initlen : IO_BUF_SIZE;
 694
 695     bf = tcc_mallocz(sizeof(BufferedFile) + buflen);
 696     bf->buf_ptr = bf->buffer;
 697     bf->buf_end = bf->buffer + initlen;
 698     bf->buf_end[0] = CH_EOB; /* put eob symbol */
 699     pstrcpy(bf->filename, sizeof(bf->filename), filename);
 700 #ifdef _WIN32
 701     normalize_slashes(bf->filename);
 702 #endif
 703     bf->true_filename = bf->filename;
 704     bf->line_num = 1;
 705     bf->ifdef_stack_ptr = s1->ifdef_stack_ptr;
 706     bf->fd = -1;
 707     bf->prev = file;
 708     file = bf;
 709     tok_flags = TOK_FLAG_BOL | TOK_FLAG_BOF;
 710 }
 711
 712 ST_FUNC void tcc_close(void)
 713 {
 714     TCCState *s1 = tcc_state;
 715     BufferedFile *bf = file;
 716     if (bf->fd > 0) {
 717         close(bf->fd);
 718         total_lines += bf->line_num - 1;
 719     }
 720     if (bf->true_filename != bf->filename)
 721         tcc_free(bf->true_filename);
 722     file = bf->prev;
 723     tcc_free(bf);
 724 }
 725
 726 static int _tcc_open(TCCState *s1, const char *filename)
 727 {
 728     int fd;
 729     if (strcmp(filename, "-") == 0)
 730         fd = 0, filename = "<stdin>";
 731     else
 732         fd = open(filename, O_RDONLY | O_BINARY);
 733     if ((s1->verbose == 2 && fd >= 0) || s1->verbose == 3)
 734         printf("%s %*s%s\n", fd < 0 ? "nf":"->",
 735                (int)(s1->include_stack_ptr - s1->include_stack), "", filename);
 736     return fd;
 737 }
 738
 739 ST_FUNC int tcc_open(TCCState *s1, const char *filename)
 740 {
 741     int fd = _tcc_open(s1, filename);
 742     if (fd < 0)
 743         return -1;
 744     tcc_open_bf(s1, filename, 0);
 745     file->fd = fd;
 746     return 0;
 747 }
 748
 749 /* compile the file opened in 'file'. Return non zero if errors. */
 750 static int tcc_compile(TCCState *s1, int filetype, const char *str, int fd)
 751 {
 752     /* Here we enter the code section where we use the global variables for
 753        parsing and code generation (tccpp.c, tccgen.c, <target>-gen.c).
 754        Other threads need to wait until we're done.
 755
 756        Alternatively we could use thread local storage for those global
 757        variables, which may or may not have advantages */
 758
 759     tcc_enter_state(s1);
 760     s1->error_set_jmp_enabled = 1;
 761
 762     if (setjmp(s1->error_jmp_buf) == 0) {
 763         s1->nb_errors = 0;
 764
 765         if (fd == -1) {
 766             int len = strlen(str);
 767             tcc_open_bf(s1, "<string>", len);
 768             memcpy(file->buffer, str, len);
 769         } else {
 770             tcc_open_bf(s1, str, 0);
 771             file->fd = fd;
 772         }
 773
 774         preprocess_start(s1, filetype);
 775         tccgen_init(s1);
 776
 777         if (s1->output_type == TCC_OUTPUT_PREPROCESS) {
 778             tcc_preprocess(s1);
 779         } else {
 780             tccelf_begin_file(s1);
 781             if (filetype & (AFF_TYPE_ASM | AFF_TYPE_ASMPP)) {
 782                 tcc_assemble(s1, !!(filetype & AFF_TYPE_ASMPP));
 783             } else {
 784                 tccgen_compile(s1);
 785             }
 786             tccelf_end_file(s1);
 787         }
 788     }
 789     tccgen_finish(s1);
 790     preprocess_end(s1);
 791     s1->error_set_jmp_enabled = 0;
 792     tcc_exit_state(s1);
 793     return s1->nb_errors != 0 ? -1 : 0;
 794 }
 795
 796 LIBTCCAPI int tcc_compile_string(TCCState *s, const char *str)
 797 {
 798     return tcc_compile(s, s->filetype, str, -1);
 799 }
 800
 801 /* define a preprocessor symbol. value can be NULL, sym can be "sym=val" */
 802 LIBTCCAPI void tcc_define_symbol(TCCState *s1, const char *sym, const char *value)
 803 {
 804     const char *eq;
 805     if (NULL == (eq = strchr(sym, '=')))
 806         eq = strchr(sym, 0);
 807     if (NULL == value)
 808         value = *eq ? eq + 1 : "1";
 809     cstr_printf(&s1->cmdline_defs, "#define %.*s %s\n", (int)(eq-sym), sym, value);
 810 }
 811
 812 /* undefine a preprocessor symbol */
 813 LIBTCCAPI void tcc_undefine_symbol(TCCState *s1, const char *sym)
 814 {
 815     cstr_printf(&s1->cmdline_defs, "#undef %s\n", sym);
 816 }
 817
 818
 819 LIBTCCAPI TCCState *tcc_new(void)
 820 {
 821     TCCState *s;
 822
 823     s = tcc_mallocz(sizeof(TCCState));
 824     if (!s)
 825         return NULL;
 826 #ifdef MEM_DEBUG
 827     tcc_memcheck(1);
 828 #endif
 829
 830 #undef gnu_ext
 831
 832     s->gnu_ext = 1;
 833     s->tcc_ext = 1;
 834     s->nocommon = 1;
 835     s->dollars_in_identifiers = 1; /*on by default like in gcc/clang*/
 836     s->cversion = 199901; /* default unless -std=c11 is supplied */
 837     s->warn_implicit_function_declaration = 1;
 838     s->warn_discarded_qualifiers = 1;
 839     s->ms_extensions = 1;
 840
 841 #ifdef CHAR_IS_UNSIGNED
 842     s->char_is_unsigned = 1;
 843 #endif
 844 #ifdef TCC_TARGET_I386
 845     s->seg_size = 32;
 846 #endif
 847     /* enable this if you want symbols with leading underscore on windows: */
 848 #if defined TCC_TARGET_MACHO /* || defined TCC_TARGET_PE */
 849     s->leading_underscore = 1;
 850 #endif
 851 #ifdef TCC_TARGET_ARM
 852     s->float_abi = ARM_FLOAT_ABI;
 853 #endif
 854 #ifdef CONFIG_NEW_DTAGS
 855     s->enable_new_dtags = 1;
 856 #endif
 857     s->ppfp = stdout;
 858     /* might be used in error() before preprocess_start() */
 859     s->include_stack_ptr = s->include_stack;
 860
 861     tcc_set_lib_path(s, CONFIG_TCCDIR);
 862     return s;
 863 }
 864
 865 LIBTCCAPI void tcc_delete(TCCState *s1)
 866 {
 867     /* free sections */
 868     tccelf_delete(s1);
 869
 870     /* free library paths */
 871     dynarray_reset(&s1->library_paths, &s1->nb_library_paths);
 872     dynarray_reset(&s1->crt_paths, &s1->nb_crt_paths);
 873
 874     /* free include paths */
 875     dynarray_reset(&s1->include_paths, &s1->nb_include_paths);
 876     dynarray_reset(&s1->sysinclude_paths, &s1->nb_sysinclude_paths);
 877
 878     tcc_free(s1->tcc_lib_path);
 879     tcc_free(s1->soname);
 880     tcc_free(s1->rpath);
 881     tcc_free(s1->elf_entryname);
 882     tcc_free(s1->init_symbol);
 883     tcc_free(s1->fini_symbol);
 884     tcc_free(s1->mapfile);
 885     tcc_free(s1->outfile);
 886     tcc_free(s1->deps_outfile);
 887 #if defined TCC_TARGET_MACHO
 888     tcc_free(s1->install_name);
 889 #endif
 890     dynarray_reset(&s1->files, &s1->nb_files);
 891     dynarray_reset(&s1->target_deps, &s1->nb_target_deps);
 892     dynarray_reset(&s1->pragma_libs, &s1->nb_pragma_libs);
 893     dynarray_reset(&s1->argv, &s1->argc);
 894     cstr_free(&s1->cmdline_defs);
 895     cstr_free(&s1->cmdline_incl);
 896     cstr_free(&s1->linker_arg);
 897 #ifdef TCC_IS_NATIVE
 898     /* free runtime memory */
 899     tcc_run_free(s1);
 900 #endif
 901     tcc_free(s1->dState);
 902     tcc_free(s1);
 903 #ifdef MEM_DEBUG
 904     tcc_memcheck(-1);
 905 #endif
 906 }
 907
 908 LIBTCCAPI int tcc_set_output_type(TCCState *s, int output_type)
 909 {
 910 #ifdef CONFIG_TCC_PIE
 911     if (output_type == TCC_OUTPUT_EXE)
 912         output_type |= TCC_OUTPUT_DYN;
 913 #endif
 914     s->output_type = output_type;
 915
 916     if (!s->nostdinc) {
 917         /* default include paths */
 918         /* -isystem paths have already been handled */
 919         tcc_add_sysinclude_path(s, CONFIG_TCC_SYSINCLUDEPATHS);
 920     }
 921
 922     if (output_type == TCC_OUTPUT_PREPROCESS) {
 923         s->do_debug = 0;
 924         return 0;
 925     }
 926
 927     tccelf_new(s);
 928     if (s->do_debug) {
 929         /* add debug sections */
 930         tcc_debug_new(s);
 931     }
 932 #ifdef CONFIG_TCC_BCHECK
 933     if (s->do_bounds_check) {
 934         /* if bound checking, then add corresponding sections */
 935         tccelf_bounds_new(s);
 936     }
 937 #endif
 938
 939     if (output_type == TCC_OUTPUT_OBJ) {
 940         /* always elf for objects */
 941         s->output_format = TCC_OUTPUT_FORMAT_ELF;
 942         return 0;
 943     }
 944
 945     tcc_add_library_path(s, CONFIG_TCC_LIBPATHS);
 946
 947 #ifdef TCC_TARGET_PE
 948 # ifdef _WIN32
 949     /* allow linking with system dll's directly */
 950     tcc_add_systemdir(s);
 951 # endif
 952     /* target PE has its own startup code in libtcc1.a */
 953     return 0;
 954
 955 #elif defined TCC_TARGET_MACHO
 956 # ifdef TCC_IS_NATIVE
 957     tcc_add_macos_sdkpath(s);
 958 # endif
 959     /* Mach-O with LC_MAIN doesn't need any crt startup code.  */
 960     return 0;
 961
 962 #else
 963     /* paths for crt objects */
 964     tcc_split_path(s, &s->crt_paths, &s->nb_crt_paths, CONFIG_TCC_CRTPREFIX);
 965
 966     /* add libc crt1/crti objects */
 967     if (output_type != TCC_OUTPUT_MEMORY && !s->nostdlib) {
 968 #if TARGETOS_OpenBSD
 969         if (output_type != TCC_OUTPUT_DLL)
 970             tcc_add_crt(s, "crt0.o");
 971         if (output_type == TCC_OUTPUT_DLL)
 972             tcc_add_crt(s, "crtbeginS.o");
 973         else
 974             tcc_add_crt(s, "crtbegin.o");
 975 #elif TARGETOS_FreeBSD
 976         if (output_type != TCC_OUTPUT_DLL)
 977             tcc_add_crt(s, "crt1.o");
 978         tcc_add_crt(s, "crti.o");
 979         if (s->static_link)
 980             tcc_add_crt(s, "crtbeginT.o");
 981         else if (output_type & TCC_OUTPUT_DYN)
 982             tcc_add_crt(s, "crtbeginS.o");
 983         else
 984             tcc_add_crt(s, "crtbegin.o");
 985 #elif TARGETOS_NetBSD
 986         if (output_type != TCC_OUTPUT_DLL)
 987             tcc_add_crt(s, "crt0.o");
 988         tcc_add_crt(s, "crti.o");
 989         if (s->static_link)
 990             tcc_add_crt(s, "crtbeginT.o");
 991         else if (output_type & TCC_OUTPUT_DYN)
 992             tcc_add_crt(s, "crtbeginS.o");
 993         else
 994             tcc_add_crt(s, "crtbegin.o");
 995 #elif defined TARGETOS_ANDROID
 996         if (output_type != TCC_OUTPUT_DLL)
 997             tcc_add_crt(s, "crtbegin_dynamic.o");
 998         else
 999             tcc_add_crt(s, "crtbegin_so.o");
1000 #else
1001         if (output_type != TCC_OUTPUT_DLL)
1002             tcc_add_crt(s, "crt1.o");
1003         tcc_add_crt(s, "crti.o");
1004 #endif
1005     }
1006     return 0;
1007 #endif
1008 }
1009
1010 LIBTCCAPI int tcc_add_include_path(TCCState *s, const char *pathname)
1011 {
1012     tcc_split_path(s, &s->include_paths, &s->nb_include_paths, pathname);
1013     return 0;
1014 }
1015
1016 LIBTCCAPI int tcc_add_sysinclude_path(TCCState *s, const char *pathname)
1017 {
1018     tcc_split_path(s, &s->sysinclude_paths, &s->nb_sysinclude_paths, pathname);
1019     return 0;
1020 }
1021
1022 /* add/update a 'DLLReference', Just find if level == -1  */
1023 ST_FUNC DLLReference *tcc_add_dllref(TCCState *s1, const char *dllname, int level)
1024 {
1025     DLLReference *ref = NULL;
1026     int i;
1027     for (i = 0; i < s1->nb_loaded_dlls; i++)
1028         if (0 == strcmp(s1->loaded_dlls[i]->name, dllname)) {
1029             ref = s1->loaded_dlls[i];
1030             break;
1031         }
1032     if (level == -1)
1033         return ref;
1034     if (ref) {
1035         if (level < ref->level)
1036             ref->level = level;
1037         ref->found = 1;
1038         return ref;
1039     }
1040     ref = tcc_mallocz(sizeof(DLLReference) + strlen(dllname));
1041     strcpy(ref->name, dllname);
1042     dynarray_add(&s1->loaded_dlls, &s1->nb_loaded_dlls, ref);
1043     ref->level = level;
1044     ref->index = s1->nb_loaded_dlls;
1045     return ref;
1046 }
1047
1048 /* OpenBSD: choose latest from libxxx.so.x.y versions */
1049 #if defined TARGETOS_OpenBSD && !defined _WIN32
1050 #include <glob.h>
1051 static int tcc_glob_so(TCCState *s1, const char *pattern, char *buf, int size)
1052 {
1053     const char *star;
1054     glob_t g;
1055     char *p;
1056     int i, v, v1, v2, v3;
1057
1058     star = strchr(pattern, '*');
1059     if (!star || glob(pattern, 0, NULL, &g))
1060         return -1;
1061     for (v = -1, i = 0; i < g.gl_pathc; ++i) {
1062         p = g.gl_pathv[i];
1063         if (2 != sscanf(p + (star - pattern), "%d.%d.%d", &v1, &v2, &v3))
1064             continue;
1065         if ((v1 = v1 * 1000 + v2) > v)
1066             v = v1, pstrcpy(buf, size, p);
1067     }
1068     globfree(&g);
1069     return v;
1070 }
1071 #endif
1072
1073 ST_FUNC int tcc_add_file_internal(TCCState *s1, const char *filename, int flags)
1074 {
1075     int fd, ret = -1;
1076
1077 #if defined TARGETOS_OpenBSD && !defined _WIN32
1078     char buf[1024];
1079     if (tcc_glob_so(s1, filename, buf, sizeof buf) >= 0)
1080         filename = buf;
1081 #endif
1082
1083     /* ignore binary files with -E */
1084     if (s1->output_type == TCC_OUTPUT_PREPROCESS
1085         && (flags & AFF_TYPE_BIN))
1086         return 0;
1087
1088     /* open the file */
1089     fd = _tcc_open(s1, filename);
1090     if (fd < 0) {
1091         if (flags & AFF_PRINT_ERROR)
1092             tcc_error_noabort("file '%s' not found", filename);
1093         return ret;
1094     }
1095
1096     s1->current_filename = filename;
1097     if (flags & AFF_TYPE_BIN) {
1098         ElfW(Ehdr) ehdr;
1099         int obj_type;
1100
1101         obj_type = tcc_object_type(fd, &ehdr);
1102         lseek(fd, 0, SEEK_SET);
1103
1104         switch (obj_type) {
1105
1106         case AFF_BINTYPE_REL:
1107             ret = tcc_load_object_file(s1, fd, 0);
1108             break;
1109
1110         case AFF_BINTYPE_AR:
1111             ret = tcc_load_archive(s1, fd, !(flags & AFF_WHOLE_ARCHIVE));
1112             break;
1113
1114 #ifdef TCC_TARGET_PE
1115         default:
1116             ret = pe_load_file(s1, fd, filename);
1117             goto check_success;
1118
1119 #elif defined TCC_TARGET_MACHO
1120         case AFF_BINTYPE_DYN:
1121         case_dyn_or_tbd:
1122             if (s1->output_type == TCC_OUTPUT_MEMORY) {
1123 #ifdef TCC_IS_NATIVE
1124                 void* dl;
1125                 const char* soname = filename;
1126                 if (obj_type != AFF_BINTYPE_DYN)
1127                     soname = macho_tbd_soname(filename);
1128                 dl = dlopen(soname, RTLD_GLOBAL | RTLD_LAZY);
1129                 if (dl)
1130                     tcc_add_dllref(s1, soname, 0)->handle = dl, ret = 0;
1131                 if (filename != soname)
1132                     tcc_free((void *)soname);
1133 #endif
1134             } else if (obj_type == AFF_BINTYPE_DYN) {
1135                 ret = macho_load_dll(s1, fd, filename, (flags & AFF_REFERENCED_DLL) != 0);
1136             } else {
1137                 ret = macho_load_tbd(s1, fd, filename, (flags & AFF_REFERENCED_DLL) != 0);
1138             }
1139             goto check_success;
1140         default:
1141         {
1142             const char *ext = tcc_fileextension(filename);
1143             if (!strcmp(ext, ".tbd"))
1144                 goto case_dyn_or_tbd;
1145             if (!strcmp(ext, ".dylib")) {
1146                 obj_type = AFF_BINTYPE_DYN;
1147                 goto case_dyn_or_tbd;
1148             }
1149             goto check_success;
1150         }
1151
1152 #else /* unix */
1153         case AFF_BINTYPE_DYN:
1154             if (s1->output_type == TCC_OUTPUT_MEMORY) {
1155 #ifdef TCC_IS_NATIVE
1156                 void* dl = dlopen(filename, RTLD_GLOBAL | RTLD_LAZY);
1157                 if (dl)
1158                     tcc_add_dllref(s1, filename, 0)->handle = dl, ret = 0;
1159 #endif
1160             } else
1161                 ret = tcc_load_dll(s1, fd, filename, (flags & AFF_REFERENCED_DLL) != 0);
1162             break;
1163
1164         default:
1165             /* as GNU ld, consider it is an ld script if not recognized */
1166             ret = tcc_load_ldscript(s1, fd);
1167             goto check_success;
1168
1169 #endif /* pe / macos / unix */
1170
1171 check_success:
1172             if (ret < 0)
1173                 tcc_error_noabort("%s: unrecognized file type", filename);
1174             break;
1175
1176 #ifdef TCC_TARGET_COFF
1177         case AFF_BINTYPE_C67:
1178             ret = tcc_load_coff(s1, fd);
1179             break;
1180 #endif
1181         }
1182         close(fd);
1183     } else {
1184         /* update target deps */
1185         dynarray_add(&s1->target_deps, &s1->nb_target_deps, tcc_strdup(filename));
1186         ret = tcc_compile(s1, flags, filename, fd);
1187     }
1188     s1->current_filename = NULL;
1189     return ret;
1190 }
1191
1192 LIBTCCAPI int tcc_add_file(TCCState *s, const char *filename)
1193 {
1194     int filetype = s->filetype;
1195     if (0 == (filetype & AFF_TYPE_MASK)) {
1196         /* use a file extension to detect a filetype */
1197         const char *ext = tcc_fileextension(filename);
1198         if (ext[0]) {
1199             ext++;
1200             if (!strcmp(ext, "S"))
1201                 filetype = AFF_TYPE_ASMPP;
1202             else if (!strcmp(ext, "s"))
1203                 filetype = AFF_TYPE_ASM;
1204             else if (!PATHCMP(ext, "c")
1205                      || !PATHCMP(ext, "h")
1206                      || !PATHCMP(ext, "i"))
1207                 filetype = AFF_TYPE_C;
1208             else
1209                 filetype |= AFF_TYPE_BIN;
1210         } else {
1211             filetype = AFF_TYPE_C;
1212         }
1213     }
1214     return tcc_add_file_internal(s, filename, filetype | AFF_PRINT_ERROR);
1215 }
1216
1217 LIBTCCAPI int tcc_add_library_path(TCCState *s, const char *pathname)
1218 {
1219     tcc_split_path(s, &s->library_paths, &s->nb_library_paths, pathname);
1220     return 0;
1221 }
1222
1223 static int tcc_add_library_internal(TCCState *s, const char *fmt,
1224     const char *filename, int flags, char **paths, int nb_paths)
1225 {
1226     char buf[1024];
1227     int i;
1228
1229     for(i = 0; i < nb_paths; i++) {
1230         snprintf(buf, sizeof(buf), fmt, paths[i], filename);
1231         if (tcc_add_file_internal(s, buf, flags | AFF_TYPE_BIN) == 0)
1232             return 0;
1233     }
1234     return -1;
1235 }
1236
1237 /* find and load a dll. Return non zero if not found */
1238 ST_FUNC int tcc_add_dll(TCCState *s, const char *filename, int flags)
1239 {
1240     return tcc_add_library_internal(s, "%s/%s", filename, flags,
1241         s->library_paths, s->nb_library_paths);
1242 }
1243
1244 /* find [cross-]libtcc1.a and tcc helper objects in library path */
1245 ST_FUNC void tcc_add_support(TCCState *s1, const char *filename)
1246 {
1247     char buf[100];
1248     if (CONFIG_TCC_CROSSPREFIX[0])
1249         filename = strcat(strcpy(buf, CONFIG_TCC_CROSSPREFIX), filename);
1250     if (tcc_add_dll(s1, filename, 0) < 0)
1251         tcc_error_noabort("%s not found", filename);
1252 }
1253
1254 #if !defined TCC_TARGET_PE && !defined TCC_TARGET_MACHO
1255 ST_FUNC int tcc_add_crt(TCCState *s1, const char *filename)
1256 {
1257     if (-1 == tcc_add_library_internal(s1, "%s/%s",
1258         filename, 0, s1->crt_paths, s1->nb_crt_paths))
1259         return tcc_error_noabort("file '%s' not found", filename);
1260     return 0;
1261 }
1262 #endif
1263
1264 /* the library name is the same as the argument of the '-l' option */
1265 LIBTCCAPI int tcc_add_library(TCCState *s, const char *libraryname)
1266 {
1267 #if defined TCC_TARGET_PE
1268     static const char * const libs[] = { "%s/%s.def", "%s/lib%s.def", "%s/%s.dll", "%s/lib%s.dll", "%s/lib%s.a", NULL };
1269     const char * const *pp = s->static_link ? libs + 4 : libs;
1270 #elif defined TCC_TARGET_MACHO
1271     static const char * const libs[] = { "%s/lib%s.dylib", "%s/lib%s.tbd", "%s/lib%s.a", NULL };
1272     const char * const *pp = s->static_link ? libs + 2 : libs;
1273 #elif defined TARGETOS_OpenBSD
1274     static const char * const libs[] = { "%s/lib%s.so.*", "%s/lib%s.a", NULL };
1275     const char * const *pp = s->static_link ? libs + 1 : libs;
1276 #else
1277     static const char * const libs[] = { "%s/lib%s.so", "%s/lib%s.a", NULL };
1278     const char * const *pp = s->static_link ? libs + 1 : libs;
1279 #endif
1280     int flags = s->filetype & AFF_WHOLE_ARCHIVE;
1281     while (*pp) {
1282         if (0 == tcc_add_library_internal(s, *pp,
1283             libraryname, flags, s->library_paths, s->nb_library_paths))
1284             return 0;
1285         ++pp;
1286     }
1287     return -1;
1288 }
1289
1290 PUB_FUNC int tcc_add_library_err(TCCState *s1, const char *libname)
1291 {
1292     int ret = tcc_add_library(s1, libname);
1293     if (ret < 0)
1294         tcc_error_noabort("library '%s' not found", libname);
1295     return ret;
1296 }
1297
1298 /* handle #pragma comment(lib,) */
1299 ST_FUNC void tcc_add_pragma_libs(TCCState *s1)
1300 {
1301     int i;
1302     for (i = 0; i < s1->nb_pragma_libs; i++)
1303         tcc_add_library_err(s1, s1->pragma_libs[i]);
1304 }
1305
1306 LIBTCCAPI int tcc_add_symbol(TCCState *s1, const char *name, const void *val)
1307 {
1308 #ifdef TCC_TARGET_PE
1309     /* On x86_64 'val' might not be reachable with a 32bit offset.
1310        So it is handled here as if it were in a DLL. */
1311     pe_putimport(s1, 0, name, (uintptr_t)val);
1312 #else
1313     char buf[256];
1314     if (s1->leading_underscore) {
1315         buf[0] = '_';
1316         pstrcpy(buf + 1, sizeof(buf) - 1, name);
1317         name = buf;
1318     }
1319     set_global_sym(s1, name, NULL, (addr_t)(uintptr_t)val); /* NULL: SHN_ABS */
1320 #endif
1321     return 0;
1322 }
1323
1324 LIBTCCAPI void tcc_set_lib_path(TCCState *s, const char *path)
1325 {
1326     tcc_free(s->tcc_lib_path);
1327     s->tcc_lib_path = tcc_strdup(path);
1328 }
1329
1330 /********************************************************/
1331 /* options parser */
1332
1333 static int strstart(const char *val, const char **str)
1334 {
1335     const char *p, *q;
1336     p = *str;
1337     q = val;
1338     while (*q) {
1339         if (*p != *q)
1340             return 0;
1341         p++;
1342         q++;
1343     }
1344     *str = p;
1345     return 1;
1346 }
1347
1348 /* Like strstart, but automatically takes into account that ld options can
1349  *
1350  * - start with double or single dash (e.g. '--soname' or '-soname')
1351  * - arguments can be given as separate or after '=' (e.g. '-Wl,-soname,x.so'
1352  *   or '-Wl,-soname=x.so')
1353  *
1354  * you provide `val` always in 'option[=]' form (no leading -)
1355  */
1356 static int link_option(const char *str, const char *val, const char **ptr)
1357 {
1358     const char *p, *q;
1359     int ret;
1360
1361     /* there should be 1 or 2 dashes */
1362     if (*str++ != '-')
1363         return 0;
1364     if (*str == '-')
1365         str++;
1366
1367     /* then str & val should match (potentially up to '=') */
1368     p = str;
1369     q = val;
1370
1371     ret = 1;
1372     if (q[0] == '?') {
1373         ++q;
1374         if (strstart("no-", &p))
1375             ret = -1;
1376     }
1377
1378     while (*q != '\0' && *q != '=') {
1379         if (*p != *q)
1380             return 0;
1381         p++;
1382         q++;
1383     }
1384
1385     /* '=' near eos means ',' or '=' is ok */
1386     if (*q == '=') {
1387         if (*p == 0)
1388             *ptr = p;
1389         if (*p != ',' && *p != '=')
1390             return 0;
1391         p++;
1392     } else if (*p) {
1393         return 0;
1394     }
1395     *ptr = p;
1396     return ret;
1397 }
1398
1399 static const char *skip_linker_arg(const char **str)
1400 {
1401     const char *s1 = *str;
1402     const char *s2 = strchr(s1, ',');
1403     *str = s2 ? s2++ : (s2 = s1 + strlen(s1));
1404     return s2;
1405 }
1406
1407 static void copy_linker_arg(char **pp, const char *s, int sep)
1408 {
1409     const char *q = s;
1410     char *p = *pp;
1411     int l = 0;
1412     if (p && sep)
1413         p[l = strlen(p)] = sep, ++l;
1414     skip_linker_arg(&q);
1415     pstrncpy(l + (*pp = tcc_realloc(p, q - s + l + 1)), s, q - s);
1416 }
1417
1418 static void args_parser_add_file(TCCState *s, const char* filename, int filetype)
1419 {
1420     struct filespec *f = tcc_malloc(sizeof *f + strlen(filename));
1421     f->type = filetype;
1422     strcpy(f->name, filename);
1423     dynarray_add(&s->files, &s->nb_files, f);
1424 }
1425
1426 /* set linker options */
1427 static int tcc_set_linker(TCCState *s, const char *option)
1428 {
1429     TCCState *s1 = s;
1430     while (*option) {
1431
1432         const char *p = NULL;
1433         char *end = NULL;
1434         int ignoring = 0;
1435         int ret;
1436
1437         if (link_option(option, "Bsymbolic", &p)) {
1438             s->symbolic = 1;
1439         } else if (link_option(option, "nostdlib", &p)) {
1440             s->nostdlib = 1;
1441         } else if (link_option(option, "e=", &p)
1442                ||  link_option(option, "entry=", &p)) {
1443             copy_linker_arg(&s->elf_entryname, p, 0);
1444         } else if (link_option(option, "fini=", &p)) {
1445             copy_linker_arg(&s->fini_symbol, p, 0);
1446             ignoring = 1;
1447         } else if (link_option(option, "image-base=", &p)
1448                 || link_option(option, "Ttext=", &p)) {
1449             s->text_addr = strtoull(p, &end, 16);
1450             s->has_text_addr = 1;
1451         } else if (link_option(option, "init=", &p)) {
1452             copy_linker_arg(&s->init_symbol, p, 0);
1453             ignoring = 1;
1454         } else if (link_option(option, "Map=", &p)) {
1455             copy_linker_arg(&s->mapfile, p, 0);
1456             ignoring = 1;
1457         } else if (link_option(option, "oformat=", &p)) {
1458 #if defined(TCC_TARGET_PE)
1459             if (strstart("pe-", &p)) {
1460 #elif PTR_SIZE == 8
1461             if (strstart("elf64-", &p)) {
1462 #else
1463             if (strstart("elf32-", &p)) {
1464 #endif
1465                 s->output_format = TCC_OUTPUT_FORMAT_ELF;
1466             } else if (!strcmp(p, "binary")) {
1467                 s->output_format = TCC_OUTPUT_FORMAT_BINARY;
1468 #ifdef TCC_TARGET_COFF
1469             } else if (!strcmp(p, "coff")) {
1470                 s->output_format = TCC_OUTPUT_FORMAT_COFF;
1471 #endif
1472             } else
1473                 goto err;
1474
1475         } else if (link_option(option, "as-needed", &p)) {
1476             ignoring = 1;
1477         } else if (link_option(option, "O", &p)) {
1478             ignoring = 1;
1479         } else if (link_option(option, "export-all-symbols", &p)) {
1480             s->rdynamic = 1;
1481         } else if (link_option(option, "export-dynamic", &p)) {
1482             s->rdynamic = 1;
1483         } else if (link_option(option, "rpath=", &p)) {
1484             copy_linker_arg(&s->rpath, p, ':');
1485         } else if (link_option(option, "enable-new-dtags", &p)) {
1486             s->enable_new_dtags = 1;
1487         } else if (link_option(option, "section-alignment=", &p)) {
1488             s->section_align = strtoul(p, &end, 16);
1489         } else if (link_option(option, "soname=", &p)) {
1490             copy_linker_arg(&s->soname, p, 0);
1491         } else if (link_option(option, "install_name=", &p)) {
1492             copy_linker_arg(&s->soname, p, 0);
1493 #ifdef TCC_TARGET_PE
1494         } else if (link_option(option, "large-address-aware", &p)) {
1495             s->pe_characteristics |= 0x20;
1496         } else if (link_option(option, "file-alignment=", &p)) {
1497             s->pe_file_align = strtoul(p, &end, 16);
1498         } else if (link_option(option, "stack=", &p)) {
1499             s->pe_stack_size = strtoul(p, &end, 10);
1500         } else if (link_option(option, "subsystem=", &p)) {
1501 #if defined(TCC_TARGET_I386) || defined(TCC_TARGET_X86_64)
1502             if (!strcmp(p, "native")) {
1503                 s->pe_subsystem = 1;
1504             } else if (!strcmp(p, "console")) {
1505                 s->pe_subsystem = 3;
1506             } else if (!strcmp(p, "gui") || !strcmp(p, "windows")) {
1507                 s->pe_subsystem = 2;
1508             } else if (!strcmp(p, "posix")) {
1509                 s->pe_subsystem = 7;
1510             } else if (!strcmp(p, "efiapp")) {
1511                 s->pe_subsystem = 10;
1512             } else if (!strcmp(p, "efiboot")) {
1513                 s->pe_subsystem = 11;
1514             } else if (!strcmp(p, "efiruntime")) {
1515                 s->pe_subsystem = 12;
1516             } else if (!strcmp(p, "efirom")) {
1517                 s->pe_subsystem = 13;
1518 #elif defined(TCC_TARGET_ARM)
1519             if (!strcmp(p, "wince")) {
1520                 s->pe_subsystem = 9;
1521 #endif
1522             } else
1523                 goto err;
1524 #endif
1525 #ifdef TCC_TARGET_MACHO
1526         } else if (link_option(option, "all_load", &p)) {
1527             s->filetype |= AFF_WHOLE_ARCHIVE;
1528         } else if (link_option(option, "force_load", &p)) {
1529             s->filetype |= AFF_WHOLE_ARCHIVE;
1530             args_parser_add_file(s, p, AFF_TYPE_LIB | (s->filetype & ~AFF_TYPE_MASK));
1531             s->nb_libraries++;
1532         } else if (link_option(option, "single_module", &p)) {
1533             ignoring = 1;
1534 #endif
1535         } else if (ret = link_option(option, "?whole-archive", &p), ret) {
1536             if (ret > 0)
1537                 s->filetype |= AFF_WHOLE_ARCHIVE;
1538             else
1539                 s->filetype &= ~AFF_WHOLE_ARCHIVE;
1540         } else if (link_option(option, "z=", &p)) {
1541             ignoring = 1;
1542         } else if (p) {
1543             return 0;
1544         } else {
1545     err:
1546             return tcc_error_noabort("unsupported linker option '%s'", option);
1547         }
1548         if (ignoring)
1549             tcc_warning_c(warn_unsupported)("unsupported linker option '%s'", option);
1550         option = skip_linker_arg(&p);
1551     }
1552     return 1;
1553 }
1554
1555 typedef struct TCCOption {
1556     const char *name;
1557     uint16_t index;
1558     uint16_t flags;
1559 } TCCOption;
1560
1561 enum {
1562     TCC_OPTION_ignored = 0,
1563     TCC_OPTION_HELP,
1564     TCC_OPTION_HELP2,
1565     TCC_OPTION_v,
1566     TCC_OPTION_I,
1567     TCC_OPTION_D,
1568     TCC_OPTION_U,
1569     TCC_OPTION_P,
1570     TCC_OPTION_L,
1571     TCC_OPTION_B,
1572     TCC_OPTION_l,
1573     TCC_OPTION_bench,
1574     TCC_OPTION_bt,
1575     TCC_OPTION_b,
1576     TCC_OPTION_ba,
1577     TCC_OPTION_g,
1578     TCC_OPTION_c,
1579     TCC_OPTION_dumpversion,
1580     TCC_OPTION_d,
1581     TCC_OPTION_static,
1582     TCC_OPTION_std,
1583     TCC_OPTION_shared,
1584     TCC_OPTION_soname,
1585     TCC_OPTION_o,
1586     TCC_OPTION_r,
1587     TCC_OPTION_Wl,
1588     TCC_OPTION_Wp,
1589     TCC_OPTION_W,
1590     TCC_OPTION_O,
1591     TCC_OPTION_mfloat_abi,
1592     TCC_OPTION_m,
1593     TCC_OPTION_f,
1594     TCC_OPTION_isystem,
1595     TCC_OPTION_iwithprefix,
1596     TCC_OPTION_include,
1597     TCC_OPTION_nostdinc,
1598     TCC_OPTION_nostdlib,
1599     TCC_OPTION_print_search_dirs,
1600     TCC_OPTION_rdynamic,
1601     TCC_OPTION_pthread,
1602     TCC_OPTION_run,
1603     TCC_OPTION_w,
1604     TCC_OPTION_E,
1605     TCC_OPTION_M,
1606     TCC_OPTION_MD,
1607     TCC_OPTION_MF,
1608     TCC_OPTION_MM,
1609     TCC_OPTION_MMD,
1610     TCC_OPTION_x,
1611     TCC_OPTION_ar,
1612     TCC_OPTION_impdef,
1613     TCC_OPTION_dynamiclib,
1614     TCC_OPTION_flat_namespace,
1615     TCC_OPTION_two_levelnamespace,
1616     TCC_OPTION_undefined,
1617     TCC_OPTION_install_name,
1618     TCC_OPTION_compatibility_version ,
1619     TCC_OPTION_current_version,
1620 };
1621
1622 #define TCC_OPTION_HAS_ARG 0x0001
1623 #define TCC_OPTION_NOSEP   0x0002 /* cannot have space before option and arg */
1624
1625 static const TCCOption tcc_options[] = {
1626     { "h", TCC_OPTION_HELP, 0 },
1627     { "-help", TCC_OPTION_HELP, 0 },
1628     { "?", TCC_OPTION_HELP, 0 },
1629     { "hh", TCC_OPTION_HELP2, 0 },
1630     { "v", TCC_OPTION_v, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1631     { "-version", TCC_OPTION_v, 0 }, /* handle as verbose, also prints version*/
1632     { "I", TCC_OPTION_I, TCC_OPTION_HAS_ARG },
1633     { "D", TCC_OPTION_D, TCC_OPTION_HAS_ARG },
1634     { "U", TCC_OPTION_U, TCC_OPTION_HAS_ARG },
1635     { "P", TCC_OPTION_P, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1636     { "L", TCC_OPTION_L, TCC_OPTION_HAS_ARG },
1637     { "B", TCC_OPTION_B, TCC_OPTION_HAS_ARG },
1638     { "l", TCC_OPTION_l, TCC_OPTION_HAS_ARG },
1639     { "bench", TCC_OPTION_bench, 0 },
1640 #ifdef CONFIG_TCC_BACKTRACE
1641     { "bt", TCC_OPTION_bt, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1642 #endif
1643 #ifdef CONFIG_TCC_BCHECK
1644     { "b", TCC_OPTION_b, 0 },
1645 #endif
1646     { "g", TCC_OPTION_g, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1647 #ifdef TCC_TARGET_MACHO
1648     { "compatibility_version", TCC_OPTION_compatibility_version, TCC_OPTION_HAS_ARG },
1649     { "current_version", TCC_OPTION_current_version, TCC_OPTION_HAS_ARG },
1650 #endif
1651     { "c", TCC_OPTION_c, 0 },
1652 #ifdef TCC_TARGET_MACHO
1653     { "dynamiclib", TCC_OPTION_dynamiclib, 0 },
1654 #endif
1655     { "dumpversion", TCC_OPTION_dumpversion, 0},
1656     { "d", TCC_OPTION_d, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1657     { "static", TCC_OPTION_static, 0 },
1658     { "std", TCC_OPTION_std, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1659     { "shared", TCC_OPTION_shared, 0 },
1660     { "soname", TCC_OPTION_soname, TCC_OPTION_HAS_ARG },
1661     { "o", TCC_OPTION_o, TCC_OPTION_HAS_ARG },
1662     { "pthread", TCC_OPTION_pthread, 0},
1663     { "run", TCC_OPTION_run, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1664     { "rdynamic", TCC_OPTION_rdynamic, 0 },
1665     { "r", TCC_OPTION_r, 0 },
1666     { "Wl,", TCC_OPTION_Wl, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1667     { "Wp,", TCC_OPTION_Wp, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1668     { "W", TCC_OPTION_W, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1669     { "O", TCC_OPTION_O, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1670 #ifdef TCC_TARGET_ARM
1671     { "mfloat-abi", TCC_OPTION_mfloat_abi, TCC_OPTION_HAS_ARG },
1672 #endif
1673     { "m", TCC_OPTION_m, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1674 #ifdef TCC_TARGET_MACHO
1675     { "flat_namespace", TCC_OPTION_flat_namespace, 0 },
1676 #endif
1677     { "f", TCC_OPTION_f, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1678     { "isystem", TCC_OPTION_isystem, TCC_OPTION_HAS_ARG },
1679     { "include", TCC_OPTION_include, TCC_OPTION_HAS_ARG },
1680     { "nostdinc", TCC_OPTION_nostdinc, 0 },
1681     { "nostdlib", TCC_OPTION_nostdlib, 0 },
1682     { "print-search-dirs", TCC_OPTION_print_search_dirs, 0 },
1683     { "w", TCC_OPTION_w, 0 },
1684     { "E", TCC_OPTION_E, 0},
1685     { "M", TCC_OPTION_M, 0},
1686     { "MD", TCC_OPTION_MD, 0},
1687     { "MF", TCC_OPTION_MF, TCC_OPTION_HAS_ARG },
1688     { "MM", TCC_OPTION_MM, 0},
1689     { "MMD", TCC_OPTION_MMD, 0},
1690     { "x", TCC_OPTION_x, TCC_OPTION_HAS_ARG },
1691     { "ar", TCC_OPTION_ar, 0},
1692 #ifdef TCC_TARGET_PE
1693     { "impdef", TCC_OPTION_impdef, 0},
1694 #endif
1695 #ifdef TCC_TARGET_MACHO
1696     { "install_name", TCC_OPTION_install_name, TCC_OPTION_HAS_ARG },
1697     { "two_levelnamespace", TCC_OPTION_two_levelnamespace, 0 },
1698     { "undefined", TCC_OPTION_undefined, TCC_OPTION_HAS_ARG },
1699 #endif
1700     /* ignored (silently, except after -Wunsupported) */
1701     { "arch", 0, TCC_OPTION_HAS_ARG},
1702     { "C", 0, 0 },
1703     { "-param", 0, TCC_OPTION_HAS_ARG },
1704     { "pedantic", 0, 0 },
1705     { "pipe", 0, 0 },
1706     { "s", 0, 0 },
1707     { "traditional", 0, 0 },
1708     { NULL, 0, 0 },
1709 };
1710
1711 typedef struct FlagDef {
1712     uint16_t offset;
1713     uint16_t flags;
1714     const char *name;
1715 } FlagDef;
1716
1717 #define WD_ALL    0x0001 /* warning is activated when using -Wall */
1718 #define FD_INVERT 0x0002 /* invert value before storing */
1719
1720 static const FlagDef options_W[] = {
1721     { offsetof(TCCState, warn_all), WD_ALL, "all" },
1722     { offsetof(TCCState, warn_error), 0, "error" },
1723     { offsetof(TCCState, warn_write_strings), 0, "write-strings" },
1724     { offsetof(TCCState, warn_unsupported), 0, "unsupported" },
1725     { offsetof(TCCState, warn_implicit_function_declaration), WD_ALL, "implicit-function-declaration" },
1726     { offsetof(TCCState, warn_discarded_qualifiers), WD_ALL, "discarded-qualifiers" },
1727     { 0, 0, NULL }
1728 };
1729
1730 static const FlagDef options_f[] = {
1731     { offsetof(TCCState, char_is_unsigned), 0, "unsigned-char" },
1732     { offsetof(TCCState, char_is_unsigned), FD_INVERT, "signed-char" },
1733     { offsetof(TCCState, nocommon), FD_INVERT, "common" },
1734     { offsetof(TCCState, leading_underscore), 0, "leading-underscore" },
1735     { offsetof(TCCState, ms_extensions), 0, "ms-extensions" },
1736     { offsetof(TCCState, dollars_in_identifiers), 0, "dollars-in-identifiers" },
1737     { offsetof(TCCState, test_coverage), 0, "test-coverage" },
1738     { 0, 0, NULL }
1739 };
1740
1741 static const FlagDef options_m[] = {
1742     { offsetof(TCCState, ms_bitfields), 0, "ms-bitfields" },
1743 #ifdef TCC_TARGET_X86_64
1744     { offsetof(TCCState, nosse), FD_INVERT, "sse" },
1745 #endif
1746     { 0, 0, NULL }
1747 };
1748
1749 static int set_flag(TCCState *s, const FlagDef *flags, const char *name)
1750 {
1751     int value, mask, ret;
1752     const FlagDef *p;
1753     const char *r;
1754     unsigned char *f;
1755
1756     r = name, value = !strstart("no-", &r), mask = 0;
1757
1758     /* when called with options_W, look for -W[no-]error=<option> */
1759     if ((flags->flags & WD_ALL) && strstart("error=", &r))
1760         value = value ? WARN_ON|WARN_ERR : WARN_NOE, mask = WARN_ON;
1761
1762     for (ret = -1, p = flags; p->name; ++p) {
1763         if (ret) {
1764             if (strcmp(r, p->name))
1765                 continue;
1766         } else {
1767             if (0 == (p->flags & WD_ALL))
1768                 continue;
1769         }
1770
1771         f = (unsigned char *)s + p->offset;
1772         *f = (*f & mask) | (value ^ !!(p->flags & FD_INVERT));
1773
1774         if (ret) {
1775             ret = 0;
1776             if (strcmp(r, "all"))
1777                 break;
1778         }
1779     }
1780     return ret;
1781 }
1782
1783 static int args_parser_make_argv(const char *r, int *argc, char ***argv)
1784 {
1785     int ret = 0, q, c;
1786     CString str;
1787     for(;;) {
1788         while (c = (unsigned char)*r, c && c <= ' ')
1789           ++r;
1790         if (c == 0)
1791             break;
1792         q = 0;
1793         cstr_new(&str);
1794         while (c = (unsigned char)*r, c) {
1795             ++r;
1796             if (c == '\\' && (*r == '"' || *r == '\\')) {
1797                 c = *r++;
1798             } else if (c == '"') {
1799                 q = !q;
1800                 continue;
1801             } else if (q == 0 && c <= ' ') {
1802                 break;
1803             }
1804             cstr_ccat(&str, c);
1805         }
1806         cstr_ccat(&str, 0);
1807         //printf("<%s>\n", str.data), fflush(stdout);
1808         dynarray_add(argv, argc, tcc_strdup(str.data));
1809         cstr_free(&str);
1810         ++ret;
1811     }
1812     return ret;
1813 }
1814
1815 /* read list file */
1816 static int args_parser_listfile(TCCState *s,
1817     const char *filename, int optind, int *pargc, char ***pargv)
1818 {
1819     TCCState *s1 = s;
1820     int fd, i;
1821     char *p;
1822     int argc = 0;
1823     char **argv = NULL;
1824
1825     fd = open(filename, O_RDONLY | O_BINARY);
1826     if (fd < 0)
1827         return tcc_error_noabort("listfile '%s' not found", filename);
1828
1829     p = tcc_load_text(fd);
1830     for (i = 0; i < *pargc; ++i)
1831         if (i == optind)
1832             args_parser_make_argv(p, &argc, &argv);
1833         else
1834             dynarray_add(&argv, &argc, tcc_strdup((*pargv)[i]));
1835
1836     tcc_free(p);
1837     dynarray_reset(&s->argv, &s->argc);
1838     *pargc = s->argc = argc, *pargv = s->argv = argv;
1839     return 0;
1840 }
1841
1842 #if defined TCC_TARGET_MACHO
1843 static uint32_t parse_version(TCCState *s1, const char *version)
1844 {
1845     uint32_t a = 0;
1846     uint32_t b = 0;
1847     uint32_t c = 0;
1848     char* last;
1849
1850     a = strtoul(version, &last, 10);
1851     if (*last == '.') {
1852         b = strtoul(&last[1], &last, 10);
1853         if (*last == '.')
1854              c = strtoul(&last[1], &last, 10);
1855     }
1856     if (*last || a > 0xffff || b > 0xff || c > 0xff)
1857         tcc_error_noabort("version a.b.c not correct: %s", version);
1858     return (a << 16) | (b << 8) | c;
1859 }
1860 #endif
1861
1862 PUB_FUNC int tcc_parse_args(TCCState *s, int *pargc, char ***pargv, int optind)
1863 {
1864     TCCState *s1 = s;
1865     const TCCOption *popt;
1866     const char *optarg, *r;
1867     const char *run = NULL;
1868     int x;
1869     int tool = 0, arg_start = 0, noaction = optind;
1870     char **argv = *pargv;
1871     int argc = *pargc;
1872
1873     cstr_reset(&s->linker_arg);
1874
1875     while (optind < argc) {
1876         r = argv[optind];
1877         if (r[0] == '@' && r[1] != '\0') {
1878             if (args_parser_listfile(s, r + 1, optind, &argc, &argv))
1879                 return -1;
1880             continue;
1881         }
1882         optind++;
1883         if (tool) {
1884             if (r[0] == '-' && r[1] == 'v' && r[2] == 0)
1885                 ++s->verbose;
1886             continue;
1887         }
1888 reparse:
1889         if (r[0] != '-' || r[1] == '\0') {
1890             args_parser_add_file(s, r, s->filetype);
1891             if (run) {
1892 dorun:
1893                 if (tcc_set_options(s, run))
1894                     return -1;
1895                 arg_start = optind - 1;
1896                 break;
1897             }
1898             continue;
1899         }
1900
1901         /* allow "tcc files... -run -- args ..." */
1902         if (r[1] == '-' && r[2] == '\0' && run)
1903             goto dorun;
1904
1905         /* find option in table */
1906         for(popt = tcc_options; ; ++popt) {
1907             const char *p1 = popt->name;
1908             const char *r1 = r + 1;
1909             if (p1 == NULL)
1910                 return tcc_error_noabort("invalid option -- '%s'", r);
1911             if (!strstart(p1, &r1))
1912                 continue;
1913             optarg = r1;
1914             if (popt->flags & TCC_OPTION_HAS_ARG) {
1915                 if (*r1 == '\0' && !(popt->flags & TCC_OPTION_NOSEP)) {
1916                     if (optind >= argc)
1917                 arg_err:
1918                         return tcc_error_noabort("argument to '%s' is missing", r);
1919                     optarg = argv[optind++];
1920                 }
1921             } else if (*r1 != '\0')
1922                 continue;
1923             break;
1924         }
1925
1926         switch(popt->index) {
1927         case TCC_OPTION_HELP:
1928             x = OPT_HELP;
1929             goto extra_action;
1930         case TCC_OPTION_HELP2:
1931             x = OPT_HELP2;
1932             goto extra_action;
1933         case TCC_OPTION_I:
1934             tcc_add_include_path(s, optarg);
1935             break;
1936         case TCC_OPTION_D:
1937             tcc_define_symbol(s, optarg, NULL);
1938             break;
1939         case TCC_OPTION_U:
1940             tcc_undefine_symbol(s, optarg);
1941             break;
1942         case TCC_OPTION_L:
1943             tcc_add_library_path(s, optarg);
1944             break;
1945         case TCC_OPTION_B:
1946             /* set tcc utilities path (mainly for tcc development) */
1947             tcc_set_lib_path(s, optarg);
1948             ++noaction;
1949             break;
1950         case TCC_OPTION_l:
1951             args_parser_add_file(s, optarg, AFF_TYPE_LIB | (s->filetype & ~AFF_TYPE_MASK));
1952             s->nb_libraries++;
1953             break;
1954         case TCC_OPTION_pthread:
1955             s->option_pthread = 1;
1956             break;
1957         case TCC_OPTION_bench:
1958             s->do_bench = 1;
1959             break;
1960 #ifdef CONFIG_TCC_BACKTRACE
1961         case TCC_OPTION_bt:
1962             s->rt_num_callers = atoi(optarg);
1963             s->do_backtrace = 1;
1964             s->do_debug = 1;
1965             s->dwarf = DWARF_VERSION;
1966             break;
1967 #endif
1968 #ifdef CONFIG_TCC_BCHECK
1969         case TCC_OPTION_b:
1970             s->do_bounds_check = 1;
1971             s->do_backtrace = 1;
1972             s->do_debug = 1;
1973             s->dwarf = DWARF_VERSION;
1974             break;
1975 #endif
1976         case TCC_OPTION_g:
1977             s->do_debug = 1;
1978             s->dwarf = DWARF_VERSION;
1979             if (strstart("dwarf", &optarg))
1980                 s->dwarf = (*optarg) ? (0 - atoi(optarg)) : DEFAULT_DWARF_VERSION;
1981 #ifdef TCC_TARGET_PE
1982             else if (0 == strcmp(".pdb", optarg))
1983                 s->dwarf = 5, s->do_debug |= 16;
1984 #endif
1985             break;
1986         case TCC_OPTION_c:
1987             x = TCC_OUTPUT_OBJ;
1988         set_output_type:
1989             if (s->output_type)
1990                 tcc_warning("-%s: overriding compiler action already specified", popt->name);
1991             s->output_type = x;
1992             break;
1993         case TCC_OPTION_d:
1994             if (*optarg == 'D')
1995                 s->dflag = 3;
1996             else if (*optarg == 'M')
1997                 s->dflag = 7;
1998             else if (*optarg == 't')
1999                 s->dflag = 16;
2000             else if (isnum(*optarg))
2001                 s->g_debug |= atoi(optarg);
2002             else
2003                 goto unsupported_option;
2004             break;
2005         case TCC_OPTION_static:
2006             s->static_link = 1;
2007             break;
2008         case TCC_OPTION_std:
2009             if (strcmp(optarg, "=c11") == 0)
2010                 s->cversion = 201112;
2011             break;
2012         case TCC_OPTION_shared:
2013             x = TCC_OUTPUT_DLL;
2014             goto set_output_type;
2015         case TCC_OPTION_soname:
2016             s->soname = tcc_strdup(optarg);
2017             break;
2018         case TCC_OPTION_o:
2019             if (s->outfile) {
2020                 tcc_warning("multiple -o option");
2021                 tcc_free(s->outfile);
2022             }
2023             s->outfile = tcc_strdup(optarg);
2024             break;
2025         case TCC_OPTION_r:
2026             /* generate a .o merging several output files */
2027             s->option_r = 1;
2028             x = TCC_OUTPUT_OBJ;
2029             goto set_output_type;
2030         case TCC_OPTION_isystem:
2031             tcc_add_sysinclude_path(s, optarg);
2032             break;
2033         case TCC_OPTION_include:
2034             cstr_printf(&s->cmdline_incl, "#include \"%s\"\n", optarg);
2035             break;
2036         case TCC_OPTION_nostdinc:
2037             s->nostdinc = 1;
2038             break;
2039         case TCC_OPTION_nostdlib:
2040             s->nostdlib = 1;
2041             break;
2042         case TCC_OPTION_run:
2043 #ifndef TCC_IS_NATIVE
2044             return tcc_error_noabort("-run is not available in a cross compiler");
2045 #else
2046             run = optarg;
2047             x = TCC_OUTPUT_MEMORY;
2048             goto set_output_type;
2049 #endif
2050         case TCC_OPTION_v:
2051             do ++s->verbose; while (*optarg++ == 'v');
2052             ++noaction;
2053             break;
2054         case TCC_OPTION_f:
2055             if (set_flag(s, options_f, optarg) < 0)
2056                 goto unsupported_option;
2057             break;
2058 #ifdef TCC_TARGET_ARM
2059         case TCC_OPTION_mfloat_abi:
2060             /* tcc doesn't support soft float yet */
2061             if (!strcmp(optarg, "softfp")) {
2062                 s->float_abi = ARM_SOFTFP_FLOAT;
2063             } else if (!strcmp(optarg, "hard"))
2064                 s->float_abi = ARM_HARD_FLOAT;
2065             else
2066                 return tcc_error_noabort("unsupported float abi '%s'", optarg);
2067             break;
2068 #endif
2069         case TCC_OPTION_m:
2070             if (set_flag(s, options_m, optarg) < 0) {
2071                 if (x = atoi(optarg), x != 32 && x != 64)
2072                     goto unsupported_option;
2073                 if (PTR_SIZE != x/8)
2074                     return x;
2075                 ++noaction;
2076             }
2077             break;
2078         case TCC_OPTION_W:
2079             s->warn_none = 0;
2080             if (optarg[0] && set_flag(s, options_W, optarg) < 0)
2081                 goto unsupported_option;
2082             break;
2083         case TCC_OPTION_w:
2084             s->warn_none = 1;
2085             break;
2086         case TCC_OPTION_rdynamic:
2087             s->rdynamic = 1;
2088             break;
2089         case TCC_OPTION_Wl:
2090             if (s->linker_arg.size)
2091                 ((char*)s->linker_arg.data)[s->linker_arg.size - 1] = ',';
2092             cstr_cat(&s->linker_arg, optarg, 0);
2093             x = tcc_set_linker(s, s->linker_arg.data);
2094             if (x)
2095                 cstr_reset(&s->linker_arg);
2096             if (x < 0)
2097                 return -1;
2098             break;
2099         case TCC_OPTION_Wp:
2100             r = optarg;
2101             goto reparse;
2102         case TCC_OPTION_E:
2103             x = TCC_OUTPUT_PREPROCESS;
2104             goto set_output_type;
2105         case TCC_OPTION_P:
2106             s->Pflag = atoi(optarg) + 1;
2107             break;
2108         case TCC_OPTION_M:
2109             s->include_sys_deps = 1;
2110             // fall through
2111         case TCC_OPTION_MM:
2112             s->just_deps = 1;
2113             if(!s->deps_outfile)
2114                 s->deps_outfile = tcc_strdup("-");
2115             // fall through
2116         case TCC_OPTION_MMD:
2117             s->gen_deps = 1;
2118             break;
2119         case TCC_OPTION_MD:
2120             s->gen_deps = 1;
2121             s->include_sys_deps = 1;
2122             break;
2123         case TCC_OPTION_MF:
2124             s->deps_outfile = tcc_strdup(optarg);
2125             break;
2126         case TCC_OPTION_dumpversion:
2127             printf ("%s\n", TCC_VERSION);
2128             exit(0);
2129             break;
2130         case TCC_OPTION_x:
2131             x = 0;
2132             if (*optarg == 'c')
2133                 x = AFF_TYPE_C;
2134             else if (*optarg == 'a')
2135                 x = AFF_TYPE_ASMPP;
2136             else if (*optarg == 'b')
2137                 x = AFF_TYPE_BIN;
2138             else if (*optarg == 'n')
2139                 x = AFF_TYPE_NONE;
2140             else
2141                 tcc_warning("unsupported language '%s'", optarg);
2142             s->filetype = x | (s->filetype & ~AFF_TYPE_MASK);
2143             break;
2144         case TCC_OPTION_O:
2145             s->optimize = atoi(optarg);
2146             break;
2147         case TCC_OPTION_print_search_dirs:
2148             x = OPT_PRINT_DIRS;
2149             goto extra_action;
2150         case TCC_OPTION_impdef:
2151             x = OPT_IMPDEF;
2152             goto extra_action;
2153 #if defined TCC_TARGET_MACHO
2154         case TCC_OPTION_dynamiclib:
2155             x = TCC_OUTPUT_DLL;
2156             goto set_output_type;
2157         case TCC_OPTION_flat_namespace:
2158              break;
2159         case TCC_OPTION_two_levelnamespace:
2160              break;
2161         case TCC_OPTION_undefined:
2162              break;
2163         case TCC_OPTION_install_name:
2164             s->install_name = tcc_strdup(optarg);
2165             break;
2166         case TCC_OPTION_compatibility_version:
2167             s->compatibility_version = parse_version(s, optarg);
2168             break;
2169         case TCC_OPTION_current_version:
2170             s->current_version = parse_version(s, optarg);;
2171             break;
2172 #endif
2173         case TCC_OPTION_ar:
2174             x = OPT_AR;
2175         extra_action:
2176             arg_start = optind - 1;
2177             if (arg_start != noaction)
2178                 return tcc_error_noabort("cannot parse %s here", r);
2179             tool = x;
2180             break;
2181         default:
2182 unsupported_option:
2183             tcc_warning_c(warn_unsupported)("unsupported option '%s'", r);
2184             break;
2185         }
2186     }
2187     if (s->linker_arg.size) {
2188         r = s->linker_arg.data;
2189         goto arg_err;
2190     }
2191     *pargc = argc - arg_start;
2192     *pargv = argv + arg_start;
2193     if (tool)
2194         return tool;
2195     if (optind != noaction)
2196         return 0;
2197     if (s->verbose == 2)
2198         return OPT_PRINT_DIRS;
2199     if (s->verbose)
2200         return OPT_V;
2201     return OPT_HELP;
2202 }
2203
2204 LIBTCCAPI int tcc_set_options(TCCState *s, const char *r)
2205 {
2206     char **argv = NULL;
2207     int argc = 0, ret;
2208     args_parser_make_argv(r, &argc, &argv);
2209     ret = tcc_parse_args(s, &argc, &argv, 0);
2210     dynarray_reset(&argv, &argc);
2211     return ret < 0 ? ret : 0;
2212 }
2213
2214 PUB_FUNC void tcc_print_stats(TCCState *s1, unsigned total_time)
2215 {
2216     if (!total_time)
2217         total_time = 1;
2218     fprintf(stderr, "# %d idents, %d lines, %u bytes\n"
2219                     "# %0.3f s, %u lines/s, %0.1f MB/s\n",
2220            total_idents, total_lines, total_bytes,
2221            (double)total_time/1000,
2222            (unsigned)total_lines*1000/total_time,
2223            (double)total_bytes/1000/total_time);
2224     fprintf(stderr, "# text %u, data.rw %u, data.ro %u, bss %u bytes\n",
2225            s1->total_output[0],
2226            s1->total_output[1],
2227            s1->total_output[2],
2228            s1->total_output[3]
2229            );
2230 #ifdef MEM_DEBUG
2231     fprintf(stderr, "# %d bytes memory used\n", mem_max_size);
2232 #endif
2233 }