libtcc.c

   1 /*
   2  *  TCC - Tiny C Compiler
   3  *
   4  *  Copyright (c) 2001-2004 Fabrice Bellard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #if !defined ONE_SOURCE || ONE_SOURCE
  22 #include "tccpp.c"
  23 #include "tccgen.c"
  24 #include "tccelf.c"
  25 #include "tccrun.c"
  26 #ifdef TCC_TARGET_I386
  27 #include "i386-gen.c"
  28 #include "i386-link.c"
  29 #include "i386-asm.c"
  30 #elif defined(TCC_TARGET_ARM)
  31 #include "arm-gen.c"
  32 #include "arm-link.c"
  33 #include "arm-asm.c"
  34 #elif defined(TCC_TARGET_ARM64)
  35 #include "arm64-gen.c"
  36 #include "arm64-link.c"
  37 #include "arm-asm.c"
  38 #elif defined(TCC_TARGET_C67)
  39 #include "c67-gen.c"
  40 #include "c67-link.c"
  41 #include "tcccoff.c"
  42 #elif defined(TCC_TARGET_X86_64)
  43 #include "x86_64-gen.c"
  44 #include "x86_64-link.c"
  45 #include "i386-asm.c"
  46 #elif defined(TCC_TARGET_RISCV64)
  47 #include "riscv64-gen.c"
  48 #include "riscv64-link.c"
  49 #include "riscv64-asm.c"
  50 #else
  51 #error unknown target
  52 #endif
  53 #ifdef CONFIG_TCC_ASM
  54 #include "tccasm.c"
  55 #endif
  56 #ifdef TCC_TARGET_PE
  57 #include "tccpe.c"
  58 #endif
  59 #ifdef TCC_TARGET_MACHO
  60 #include "tccmacho.c"
  61 #endif
  62 #endif /* ONE_SOURCE */
  63
  64 #include "tcc.h"
  65
  66 /********************************************************/
  67 /* global variables */
  68
  69 /* XXX: get rid of this ASAP (or maybe not) */
  70 ST_DATA struct TCCState *tcc_state;
  71
  72 #ifdef MEM_DEBUG
  73 static int nb_states;
  74 #endif
  75
  76 /********************************************************/
  77 #ifdef _WIN32
  78 ST_FUNC char *normalize_slashes(char *path)
  79 {
  80     char *p;
  81     for (p = path; *p; ++p)
  82         if (*p == '\\')
  83             *p = '/';
  84     return path;
  85 }
  86
  87 static HMODULE tcc_module;
  88
  89 /* on win32, we suppose the lib and includes are at the location of 'tcc.exe' */
  90 static void tcc_set_lib_path_w32(TCCState *s)
  91 {
  92     char path[1024], *p;
  93     GetModuleFileNameA(tcc_module, path, sizeof path);
  94     p = tcc_basename(normalize_slashes(strlwr(path)));
  95     if (p > path)
  96         --p;
  97     *p = 0;
  98     tcc_set_lib_path(s, path);
  99 }
 100
 101 #ifdef TCC_TARGET_PE
 102 static void tcc_add_systemdir(TCCState *s)
 103 {
 104     char buf[1000];
 105     GetSystemDirectory(buf, sizeof buf);
 106     tcc_add_library_path(s, normalize_slashes(buf));
 107 }
 108 #endif
 109
 110 #ifdef LIBTCC_AS_DLL
 111 BOOL WINAPI DllMain (HINSTANCE hDll, DWORD dwReason, LPVOID lpReserved)
 112 {
 113     if (DLL_PROCESS_ATTACH == dwReason)
 114         tcc_module = hDll;
 115     return TRUE;
 116 }
 117 #endif
 118 #endif
 119
 120 /********************************************************/
 121 #ifndef CONFIG_TCC_SEMLOCK
 122 #define WAIT_SEM()
 123 #define POST_SEM()
 124 #elif defined _WIN32
 125 static int tcc_sem_init;
 126 static CRITICAL_SECTION tcc_cr;
 127 static void wait_sem(void)
 128 {
 129     if (!tcc_sem_init)
 130         InitializeCriticalSection(&tcc_cr), tcc_sem_init = 1;
 131     EnterCriticalSection(&tcc_cr);
 132 }
 133 #define WAIT_SEM() wait_sem()
 134 #define POST_SEM() LeaveCriticalSection(&tcc_cr);
 135 #elif defined __APPLE__
 136 /* Half-compatible MacOS doesn't have non-shared (process local)
 137    semaphores.  Use the dispatch framework for lightweight locks.  */
 138 #include <dispatch/dispatch.h>
 139 static int tcc_sem_init;
 140 static dispatch_semaphore_t tcc_sem;
 141 static void wait_sem(void)
 142 {
 143     if (!tcc_sem_init)
 144       tcc_sem = dispatch_semaphore_create(1), tcc_sem_init = 1;
 145     dispatch_semaphore_wait(tcc_sem, DISPATCH_TIME_FOREVER);
 146 }
 147 #define WAIT_SEM() wait_sem()
 148 #define POST_SEM() dispatch_semaphore_signal(tcc_sem)
 149 #else
 150 #include <semaphore.h>
 151 static int tcc_sem_init;
 152 static sem_t tcc_sem;
 153 static void wait_sem(void)
 154 {
 155     if (!tcc_sem_init)
 156         sem_init(&tcc_sem, 0, 1), tcc_sem_init = 1;
 157     while (sem_wait (&tcc_sem) < 0 && errno == EINTR);
 158 }
 159 #define WAIT_SEM() wait_sem()
 160 #define POST_SEM() sem_post(&tcc_sem)
 161 #endif
 162
 163 /********************************************************/
 164 /* copy a string and truncate it. */
 165 ST_FUNC char *pstrcpy(char *buf, size_t buf_size, const char *s)
 166 {
 167     char *q, *q_end;
 168     int c;
 169
 170     if (buf_size > 0) {
 171         q = buf;
 172         q_end = buf + buf_size - 1;
 173         while (q < q_end) {
 174             c = *s++;
 175             if (c == '\0')
 176                 break;
 177             *q++ = c;
 178         }
 179         *q = '\0';
 180     }
 181     return buf;
 182 }
 183
 184 /* strcat and truncate. */
 185 ST_FUNC char *pstrcat(char *buf, size_t buf_size, const char *s)
 186 {
 187     size_t len;
 188     len = strlen(buf);
 189     if (len < buf_size)
 190         pstrcpy(buf + len, buf_size - len, s);
 191     return buf;
 192 }
 193
 194 ST_FUNC char *pstrncpy(char *out, const char *in, size_t num)
 195 {
 196     memcpy(out, in, num);
 197     out[num] = '\0';
 198     return out;
 199 }
 200
 201 /* extract the basename of a file */
 202 PUB_FUNC char *tcc_basename(const char *name)
 203 {
 204     char *p = strchr(name, 0);
 205     while (p > name && !IS_DIRSEP(p[-1]))
 206         --p;
 207     return p;
 208 }
 209
 210 /* extract extension part of a file
 211  *
 212  * (if no extension, return pointer to end-of-string)
 213  */
 214 PUB_FUNC char *tcc_fileextension (const char *name)
 215 {
 216     char *b = tcc_basename(name);
 217     char *e = strrchr(b, '.');
 218     return e ? e : strchr(b, 0);
 219 }
 220
 221 /********************************************************/
 222 /* memory management */
 223
 224 #undef free
 225 #undef malloc
 226 #undef realloc
 227
 228 #ifndef MEM_DEBUG
 229
 230 PUB_FUNC void tcc_free(void *ptr)
 231 {
 232     free(ptr);
 233 }
 234
 235 PUB_FUNC void *tcc_malloc(unsigned long size)
 236 {
 237     void *ptr;
 238     ptr = malloc(size);
 239     if (!ptr && size)
 240         _tcc_error("memory full (malloc)");
 241     return ptr;
 242 }
 243
 244 PUB_FUNC void *tcc_mallocz(unsigned long size)
 245 {
 246     void *ptr;
 247     ptr = tcc_malloc(size);
 248     memset(ptr, 0, size);
 249     return ptr;
 250 }
 251
 252 PUB_FUNC void *tcc_realloc(void *ptr, unsigned long size)
 253 {
 254     void *ptr1;
 255     ptr1 = realloc(ptr, size);
 256     if (!ptr1 && size)
 257         _tcc_error("memory full (realloc)");
 258     return ptr1;
 259 }
 260
 261 PUB_FUNC char *tcc_strdup(const char *str)
 262 {
 263     char *ptr;
 264     ptr = tcc_malloc(strlen(str) + 1);
 265     strcpy(ptr, str);
 266     return ptr;
 267 }
 268
 269 #else
 270
 271 #define MEM_DEBUG_MAGIC1 0xFEEDDEB1
 272 #define MEM_DEBUG_MAGIC2 0xFEEDDEB2
 273 #define MEM_DEBUG_MAGIC3 0xFEEDDEB3
 274 #define MEM_DEBUG_FILE_LEN 40
 275 #define MEM_DEBUG_CHECK3(header) \
 276     ((mem_debug_header_t*)((char*)header + header->size))->magic3
 277 #define MEM_USER_PTR(header) \
 278     ((char *)header + offsetof(mem_debug_header_t, magic3))
 279 #define MEM_HEADER_PTR(ptr) \
 280     (mem_debug_header_t *)((char*)ptr - offsetof(mem_debug_header_t, magic3))
 281
 282 struct mem_debug_header {
 283     unsigned magic1;
 284     unsigned size;
 285     struct mem_debug_header *prev;
 286     struct mem_debug_header *next;
 287     int line_num;
 288     char file_name[MEM_DEBUG_FILE_LEN + 1];
 289     unsigned magic2;
 290     ALIGNED(16) unsigned magic3;
 291 };
 292
 293 typedef struct mem_debug_header mem_debug_header_t;
 294
 295 static mem_debug_header_t *mem_debug_chain;
 296 static unsigned mem_cur_size;
 297 static unsigned mem_max_size;
 298
 299 static mem_debug_header_t *malloc_check(void *ptr, const char *msg)
 300 {
 301     mem_debug_header_t * header = MEM_HEADER_PTR(ptr);
 302     if (header->magic1 != MEM_DEBUG_MAGIC1 ||
 303         header->magic2 != MEM_DEBUG_MAGIC2 ||
 304         MEM_DEBUG_CHECK3(header) != MEM_DEBUG_MAGIC3 ||
 305         header->size == (unsigned)-1) {
 306         fprintf(stderr, "%s check failed\n", msg);
 307         if (header->magic1 == MEM_DEBUG_MAGIC1)
 308             fprintf(stderr, "%s:%u: block allocated here.\n",
 309                 header->file_name, header->line_num);
 310         exit(1);
 311     }
 312     return header;
 313 }
 314
 315 PUB_FUNC void *tcc_malloc_debug(unsigned long size, const char *file, int line)
 316 {
 317     int ofs;
 318     mem_debug_header_t *header;
 319
 320     header = malloc(sizeof(mem_debug_header_t) + size);
 321     if (!header)
 322         _tcc_error("memory full (malloc)");
 323
 324     header->magic1 = MEM_DEBUG_MAGIC1;
 325     header->magic2 = MEM_DEBUG_MAGIC2;
 326     header->size = size;
 327     MEM_DEBUG_CHECK3(header) = MEM_DEBUG_MAGIC3;
 328     header->line_num = line;
 329     ofs = strlen(file) - MEM_DEBUG_FILE_LEN;
 330     strncpy(header->file_name, file + (ofs > 0 ? ofs : 0), MEM_DEBUG_FILE_LEN);
 331     header->file_name[MEM_DEBUG_FILE_LEN] = 0;
 332
 333     header->next = mem_debug_chain;
 334     header->prev = NULL;
 335     if (header->next)
 336         header->next->prev = header;
 337     mem_debug_chain = header;
 338
 339     mem_cur_size += size;
 340     if (mem_cur_size > mem_max_size)
 341         mem_max_size = mem_cur_size;
 342
 343     return MEM_USER_PTR(header);
 344 }
 345
 346 PUB_FUNC void tcc_free_debug(void *ptr)
 347 {
 348     mem_debug_header_t *header;
 349     if (!ptr)
 350         return;
 351     header = malloc_check(ptr, "tcc_free");
 352     mem_cur_size -= header->size;
 353     header->size = (unsigned)-1;
 354     if (header->next)
 355         header->next->prev = header->prev;
 356     if (header->prev)
 357         header->prev->next = header->next;
 358     if (header == mem_debug_chain)
 359         mem_debug_chain = header->next;
 360     free(header);
 361 }
 362
 363 PUB_FUNC void *tcc_mallocz_debug(unsigned long size, const char *file, int line)
 364 {
 365     void *ptr;
 366     ptr = tcc_malloc_debug(size,file,line);
 367     memset(ptr, 0, size);
 368     return ptr;
 369 }
 370
 371 PUB_FUNC void *tcc_realloc_debug(void *ptr, unsigned long size, const char *file, int line)
 372 {
 373     mem_debug_header_t *header;
 374     int mem_debug_chain_update = 0;
 375     if (!ptr)
 376         return tcc_malloc_debug(size, file, line);
 377     header = malloc_check(ptr, "tcc_realloc");
 378     mem_cur_size -= header->size;
 379     mem_debug_chain_update = (header == mem_debug_chain);
 380     header = realloc(header, sizeof(mem_debug_header_t) + size);
 381     if (!header)
 382         _tcc_error("memory full (realloc)");
 383     header->size = size;
 384     MEM_DEBUG_CHECK3(header) = MEM_DEBUG_MAGIC3;
 385     if (header->next)
 386         header->next->prev = header;
 387     if (header->prev)
 388         header->prev->next = header;
 389     if (mem_debug_chain_update)
 390         mem_debug_chain = header;
 391     mem_cur_size += size;
 392     if (mem_cur_size > mem_max_size)
 393         mem_max_size = mem_cur_size;
 394     return MEM_USER_PTR(header);
 395 }
 396
 397 PUB_FUNC char *tcc_strdup_debug(const char *str, const char *file, int line)
 398 {
 399     char *ptr;
 400     ptr = tcc_malloc_debug(strlen(str) + 1, file, line);
 401     strcpy(ptr, str);
 402     return ptr;
 403 }
 404
 405 PUB_FUNC void tcc_memcheck(void)
 406 {
 407     if (mem_cur_size) {
 408         mem_debug_header_t *header = mem_debug_chain;
 409         fprintf(stderr, "MEM_DEBUG: mem_leak= %d bytes, mem_max_size= %d bytes\n",
 410             mem_cur_size, mem_max_size);
 411         while (header) {
 412             fprintf(stderr, "%s:%u: error: %u bytes leaked\n",
 413                 header->file_name, header->line_num, header->size);
 414             header = header->next;
 415         }
 416 #if MEM_DEBUG-0 == 2
 417         exit(2);
 418 #endif
 419     }
 420 }
 421 #endif /* MEM_DEBUG */
 422
 423 #define free(p) use_tcc_free(p)
 424 #define malloc(s) use_tcc_malloc(s)
 425 #define realloc(p, s) use_tcc_realloc(p, s)
 426
 427 /********************************************************/
 428 /* dynarrays */
 429
 430 ST_FUNC void dynarray_add(void *ptab, int *nb_ptr, void *data)
 431 {
 432     int nb, nb_alloc;
 433     void **pp;
 434
 435     nb = *nb_ptr;
 436     pp = *(void ***)ptab;
 437     /* every power of two we double array size */
 438     if ((nb & (nb - 1)) == 0) {
 439         if (!nb)
 440             nb_alloc = 1;
 441         else
 442             nb_alloc = nb * 2;
 443         pp = tcc_realloc(pp, nb_alloc * sizeof(void *));
 444         *(void***)ptab = pp;
 445     }
 446     pp[nb++] = data;
 447     *nb_ptr = nb;
 448 }
 449
 450 ST_FUNC void dynarray_reset(void *pp, int *n)
 451 {
 452     void **p;
 453     for (p = *(void***)pp; *n; ++p, --*n)
 454         if (*p)
 455             tcc_free(*p);
 456     tcc_free(*(void**)pp);
 457     *(void**)pp = NULL;
 458 }
 459
 460 static void tcc_split_path(TCCState *s, void *p_ary, int *p_nb_ary, const char *in)
 461 {
 462     const char *p;
 463     do {
 464         int c;
 465         CString str;
 466
 467         cstr_new(&str);
 468         for (p = in; c = *p, c != '\0' && c != PATHSEP[0]; ++p) {
 469             if (c == '{' && p[1] && p[2] == '}') {
 470                 c = p[1], p += 2;
 471                 if (c == 'B')
 472                     cstr_cat(&str, s->tcc_lib_path, -1);
 473                 if (c == 'f' && file) {
 474                     /* substitute current file's dir */
 475                     const char *f = file->true_filename;
 476                     const char *b = tcc_basename(f);
 477                     if (b > f)
 478                         cstr_cat(&str, f, b - f - 1);
 479                     else
 480                         cstr_cat(&str, ".", 1);
 481                 }
 482             } else {
 483                 cstr_ccat(&str, c);
 484             }
 485         }
 486         if (str.size) {
 487             cstr_ccat(&str, '\0');
 488             dynarray_add(p_ary, p_nb_ary, tcc_strdup(str.data));
 489         }
 490         cstr_free(&str);
 491         in = p+1;
 492     } while (*p);
 493 }
 494
 495 /********************************************************/
 496
 497 static void strcat_vprintf(char *buf, int buf_size, const char *fmt, va_list ap)
 498 {
 499     int len;
 500     len = strlen(buf);
 501     vsnprintf(buf + len, buf_size - len, fmt, ap);
 502 }
 503
 504 static void strcat_printf(char *buf, int buf_size, const char *fmt, ...)
 505 {
 506     va_list ap;
 507     va_start(ap, fmt);
 508     strcat_vprintf(buf, buf_size, fmt, ap);
 509     va_end(ap);
 510 }
 511
 512 #define ERROR_WARN 0
 513 #define ERROR_NOABORT 1
 514 #define ERROR_ERROR 2
 515
 516 PUB_FUNC void tcc_enter_state(TCCState *s1)
 517 {
 518     WAIT_SEM();
 519     tcc_state = s1;
 520 }
 521
 522 PUB_FUNC void tcc_exit_state(void)
 523 {
 524     tcc_state = NULL;
 525     POST_SEM();
 526 }
 527
 528 static void error1(int mode, const char *fmt, va_list ap)
 529 {
 530     char buf[2048];
 531     BufferedFile **pf, *f;
 532     TCCState *s1 = tcc_state;
 533
 534     buf[0] = '\0';
 535     if (s1 == NULL)
 536         /* can happen only if called from tcc_malloc(): 'out of memory' */
 537         goto no_file;
 538
 539     if (s1 && !s1->error_set_jmp_enabled)
 540         /* tcc_state just was set by tcc_enter_state() */
 541         tcc_exit_state();
 542
 543     if (mode == ERROR_WARN) {
 544         if (s1->warn_none)
 545             return;
 546         if (s1->warn_error)
 547             mode = ERROR_ERROR;
 548     }
 549
 550     f = NULL;
 551     if (s1->error_set_jmp_enabled) { /* we're called while parsing a file */
 552         /* use upper file if inline ":asm:" or token ":paste:" */
 553         for (f = file; f && f->filename[0] == ':'; f = f->prev)
 554             ;
 555     }
 556     if (f) {
 557         for(pf = s1->include_stack; pf < s1->include_stack_ptr; pf++)
 558             strcat_printf(buf, sizeof(buf), "In file included from %s:%d:\n",
 559                 (*pf)->filename, (*pf)->line_num);
 560         strcat_printf(buf, sizeof(buf), "%s:%d: ",
 561             f->filename, f->line_num - !!(tok_flags & TOK_FLAG_BOL));
 562     } else if (s1->current_filename) {
 563         strcat_printf(buf, sizeof(buf), "%s: ", s1->current_filename);
 564     }
 565
 566 no_file:
 567     if (0 == buf[0])
 568         strcat_printf(buf, sizeof(buf), "tcc: ");
 569     if (mode == ERROR_WARN)
 570         strcat_printf(buf, sizeof(buf), "warning: ");
 571     else
 572         strcat_printf(buf, sizeof(buf), "error: ");
 573     strcat_vprintf(buf, sizeof(buf), fmt, ap);
 574     if (!s1 || !s1->error_func) {
 575         /* default case: stderr */
 576         if (s1 && s1->output_type == TCC_OUTPUT_PREPROCESS && s1->ppfp == stdout)
 577             /* print a newline during tcc -E */
 578             printf("\n"), fflush(stdout);
 579         fflush(stdout); /* flush -v output */
 580         fprintf(stderr, "%s\n", buf);
 581         fflush(stderr); /* print error/warning now (win32) */
 582     } else {
 583         s1->error_func(s1->error_opaque, buf);
 584     }
 585     if (s1) {
 586         if (mode != ERROR_WARN)
 587             s1->nb_errors++;
 588         if (mode != ERROR_ERROR)
 589             return;
 590         if (s1->error_set_jmp_enabled)
 591             longjmp(s1->error_jmp_buf, 1);
 592     }
 593     exit(1);
 594 }
 595
 596 LIBTCCAPI void tcc_set_error_func(TCCState *s, void *error_opaque, TCCErrorFunc error_func)
 597 {
 598     s->error_opaque = error_opaque;
 599     s->error_func = error_func;
 600 }
 601
 602 LIBTCCAPI TCCErrorFunc tcc_get_error_func(TCCState *s)
 603 {
 604     return s->error_func;
 605 }
 606
 607 LIBTCCAPI void *tcc_get_error_opaque(TCCState *s)
 608 {
 609     return s->error_opaque;
 610 }
 611
 612 /* error without aborting current compilation */
 613 PUB_FUNC void _tcc_error_noabort(const char *fmt, ...)
 614 {
 615     va_list ap;
 616     va_start(ap, fmt);
 617     error1(ERROR_NOABORT, fmt, ap);
 618     va_end(ap);
 619 }
 620
 621 PUB_FUNC void _tcc_error(const char *fmt, ...)
 622 {
 623     va_list ap;
 624     va_start(ap, fmt);
 625     for (;;) error1(ERROR_ERROR, fmt, ap);
 626 }
 627
 628 PUB_FUNC void _tcc_warning(const char *fmt, ...)
 629 {
 630     va_list ap;
 631     va_start(ap, fmt);
 632     error1(ERROR_WARN, fmt, ap);
 633     va_end(ap);
 634 }
 635
 636 /********************************************************/
 637 /* I/O layer */
 638
 639 ST_FUNC void tcc_open_bf(TCCState *s1, const char *filename, int initlen)
 640 {
 641     BufferedFile *bf;
 642     int buflen = initlen ? initlen : IO_BUF_SIZE;
 643
 644     bf = tcc_mallocz(sizeof(BufferedFile) + buflen);
 645     bf->buf_ptr = bf->buffer;
 646     bf->buf_end = bf->buffer + initlen;
 647     bf->buf_end[0] = CH_EOB; /* put eob symbol */
 648     pstrcpy(bf->filename, sizeof(bf->filename), filename);
 649 #ifdef _WIN32
 650     normalize_slashes(bf->filename);
 651 #endif
 652     bf->true_filename = bf->filename;
 653     bf->line_num = 1;
 654     bf->ifdef_stack_ptr = s1->ifdef_stack_ptr;
 655     bf->fd = -1;
 656     bf->prev = file;
 657     file = bf;
 658     tok_flags = TOK_FLAG_BOL | TOK_FLAG_BOF;
 659 }
 660
 661 ST_FUNC void tcc_close(void)
 662 {
 663     TCCState *s1 = tcc_state;
 664     BufferedFile *bf = file;
 665     if (bf->fd > 0) {
 666         close(bf->fd);
 667         total_lines += bf->line_num;
 668     }
 669     if (bf->true_filename != bf->filename)
 670         tcc_free(bf->true_filename);
 671     file = bf->prev;
 672     tcc_free(bf);
 673 }
 674
 675 static int _tcc_open(TCCState *s1, const char *filename)
 676 {
 677     int fd;
 678     if (strcmp(filename, "-") == 0)
 679         fd = 0, filename = "<stdin>";
 680     else
 681         fd = open(filename, O_RDONLY | O_BINARY);
 682     if ((s1->verbose == 2 && fd >= 0) || s1->verbose == 3)
 683         printf("%s %*s%s\n", fd < 0 ? "nf":"->",
 684                (int)(s1->include_stack_ptr - s1->include_stack), "", filename);
 685     return fd;
 686 }
 687
 688 ST_FUNC int tcc_open(TCCState *s1, const char *filename)
 689 {
 690     int fd = _tcc_open(s1, filename);
 691     if (fd < 0)
 692         return -1;
 693     tcc_open_bf(s1, filename, 0);
 694     file->fd = fd;
 695     return 0;
 696 }
 697
 698 /* compile the file opened in 'file'. Return non zero if errors. */
 699 static int tcc_compile(TCCState *s1, int filetype, const char *str, int fd)
 700 {
 701     /* Here we enter the code section where we use the global variables for
 702        parsing and code generation (tccpp.c, tccgen.c, <target>-gen.c).
 703        Other threads need to wait until we're done.
 704
 705        Alternatively we could use thread local storage for those global
 706        variables, which may or may not have advantages */
 707
 708     tcc_enter_state(s1);
 709
 710     if (setjmp(s1->error_jmp_buf) == 0) {
 711         int is_asm;
 712         s1->error_set_jmp_enabled = 1;
 713         s1->nb_errors = 0;
 714
 715         if (fd == -1) {
 716             int len = strlen(str);
 717             tcc_open_bf(s1, "<string>", len);
 718             memcpy(file->buffer, str, len);
 719         } else {
 720             tcc_open_bf(s1, str, 0);
 721             file->fd = fd;
 722         }
 723
 724         is_asm = !!(filetype & (AFF_TYPE_ASM|AFF_TYPE_ASMPP));
 725         tccelf_begin_file(s1);
 726         preprocess_start(s1, is_asm);
 727         tccgen_init(s1);
 728         if (s1->output_type == TCC_OUTPUT_PREPROCESS) {
 729             tcc_preprocess(s1);
 730         } else if (is_asm) {
 731 #ifdef CONFIG_TCC_ASM
 732             tcc_assemble(s1, !!(filetype & AFF_TYPE_ASMPP));
 733 #else
 734             tcc_error_noabort("asm not supported");
 735 #endif
 736         } else {
 737             tccgen_compile(s1);
 738         }
 739     }
 740     s1->error_set_jmp_enabled = 0;
 741     tccgen_finish(s1);
 742     preprocess_end(s1);
 743     tcc_exit_state();
 744
 745     tccelf_end_file(s1);
 746     return s1->nb_errors != 0 ? -1 : 0;
 747 }
 748
 749 LIBTCCAPI int tcc_compile_string(TCCState *s, const char *str)
 750 {
 751     return tcc_compile(s, s->filetype, str, -1);
 752 }
 753
 754 /* define a preprocessor symbol. A value can also be provided with the '=' operator */
 755 LIBTCCAPI void tcc_define_symbol(TCCState *s1, const char *sym, const char *value)
 756 {
 757     if (!value)
 758         value = "1";
 759     cstr_printf(&s1->cmdline_defs, "#define %s %s\n", sym, value);
 760 }
 761
 762 /* undefine a preprocessor symbol */
 763 LIBTCCAPI void tcc_undefine_symbol(TCCState *s1, const char *sym)
 764 {
 765     cstr_printf(&s1->cmdline_defs, "#undef %s\n", sym);
 766 }
 767
 768
 769 LIBTCCAPI TCCState *tcc_new(void)
 770 {
 771     TCCState *s;
 772
 773     s = tcc_mallocz(sizeof(TCCState));
 774     if (!s)
 775         return NULL;
 776 #ifdef MEM_DEBUG
 777     ++nb_states;
 778 #endif
 779
 780 #undef gnu_ext
 781
 782     s->gnu_ext = 1;
 783     s->tcc_ext = 1;
 784     s->nocommon = 1;
 785     s->dollars_in_identifiers = 1; /*on by default like in gcc/clang*/
 786     s->cversion = 199901; /* default unless -std=c11 is supplied */
 787     s->warn_implicit_function_declaration = 1;
 788     s->ms_extensions = 1;
 789
 790 #ifdef CHAR_IS_UNSIGNED
 791     s->char_is_unsigned = 1;
 792 #endif
 793 #ifdef TCC_TARGET_I386
 794     s->seg_size = 32;
 795 #endif
 796     /* enable this if you want symbols with leading underscore on windows: */
 797 #if defined TCC_TARGET_MACHO /* || defined TCC_TARGET_PE */
 798     s->leading_underscore = 1;
 799 #endif
 800     s->ppfp = stdout;
 801     /* might be used in error() before preprocess_start() */
 802     s->include_stack_ptr = s->include_stack;
 803
 804     tccelf_new(s);
 805
 806 #ifdef _WIN32
 807     tcc_set_lib_path_w32(s);
 808 #else
 809     tcc_set_lib_path(s, CONFIG_TCCDIR);
 810 #endif
 811
 812     {
 813         /* define __TINYC__ 92X  */
 814         char buffer[32]; int a,b,c;
 815         sscanf(TCC_VERSION, "%d.%d.%d", &a, &b, &c);
 816         sprintf(buffer, "%d", a*10000 + b*100 + c);
 817         tcc_define_symbol(s, "__TINYC__", buffer);
 818     }
 819
 820     /* standard defines */
 821     tcc_define_symbol(s, "__STDC__", NULL);
 822     tcc_define_symbol(s, "__STDC_VERSION__", "199901L");
 823     tcc_define_symbol(s, "__STDC_HOSTED__", NULL);
 824
 825     /* target defines */
 826 #if defined(TCC_TARGET_I386)
 827     tcc_define_symbol(s, "__i386__", NULL);
 828     tcc_define_symbol(s, "__i386", NULL);
 829     tcc_define_symbol(s, "i386", NULL);
 830 #elif defined(TCC_TARGET_X86_64)
 831     tcc_define_symbol(s, "__x86_64__", NULL);
 832 #elif defined(TCC_TARGET_ARM)
 833     tcc_define_symbol(s, "__ARM_ARCH_4__", NULL);
 834     tcc_define_symbol(s, "__arm_elf__", NULL);
 835     tcc_define_symbol(s, "__arm_elf", NULL);
 836     tcc_define_symbol(s, "arm_elf", NULL);
 837     tcc_define_symbol(s, "__arm__", NULL);
 838     tcc_define_symbol(s, "__arm", NULL);
 839     tcc_define_symbol(s, "arm", NULL);
 840     tcc_define_symbol(s, "__APCS_32__", NULL);
 841     tcc_define_symbol(s, "__ARMEL__", NULL);
 842 #if defined(TCC_ARM_EABI)
 843     tcc_define_symbol(s, "__ARM_EABI__", NULL);
 844 #endif
 845 #if defined(TCC_ARM_HARDFLOAT)
 846     s->float_abi = ARM_HARD_FLOAT;
 847     tcc_define_symbol(s, "__ARM_PCS_VFP", NULL);
 848 #else
 849     s->float_abi = ARM_SOFTFP_FLOAT;
 850 #endif
 851 #elif defined(TCC_TARGET_ARM64)
 852     tcc_define_symbol(s, "__aarch64__", NULL);
 853 #elif defined TCC_TARGET_C67
 854     tcc_define_symbol(s, "__C67__", NULL);
 855 #elif defined TCC_TARGET_RISCV64
 856     tcc_define_symbol(s, "__riscv", NULL);
 857     tcc_define_symbol(s, "__riscv_xlen", "64");
 858     tcc_define_symbol(s, "__riscv_flen", "64");
 859     tcc_define_symbol(s, "__riscv_div", NULL);
 860     tcc_define_symbol(s, "__riscv_mul", NULL);
 861     tcc_define_symbol(s, "__riscv_fdiv", NULL);
 862     tcc_define_symbol(s, "__riscv_fsqrt", NULL);
 863     tcc_define_symbol(s, "__riscv_float_abi_double", NULL);
 864 #endif
 865
 866 #ifdef TCC_TARGET_PE
 867     tcc_define_symbol(s, "_WIN32", NULL);
 868     tcc_define_symbol(s, "__declspec(x)", "__attribute__((x))");
 869     tcc_define_symbol(s, "__cdecl", "");
 870 # ifdef TCC_TARGET_X86_64
 871     tcc_define_symbol(s, "_WIN64", NULL);
 872 # endif
 873 #else
 874     tcc_define_symbol(s, "__unix__", NULL);
 875     tcc_define_symbol(s, "__unix", NULL);
 876     tcc_define_symbol(s, "unix", NULL);
 877 # if defined(__linux__)
 878     tcc_define_symbol(s, "__linux__", NULL);
 879     tcc_define_symbol(s, "__linux", NULL);
 880 # endif
 881 # if defined(__FreeBSD__)
 882     tcc_define_symbol(s, "__FreeBSD__", "__FreeBSD__");
 883     /* No 'Thread Storage Local' on FreeBSD with tcc */
 884     tcc_define_symbol(s, "__NO_TLS", NULL);
 885 # endif
 886 # if defined(__FreeBSD_kernel__)
 887     tcc_define_symbol(s, "__FreeBSD_kernel__", NULL);
 888 # endif
 889 # if defined(__NetBSD__)
 890     tcc_define_symbol(s, "__NetBSD__", "__NetBSD__");
 891 # endif
 892 # if defined(__OpenBSD__)
 893     tcc_define_symbol(s, "__OpenBSD__", "__OpenBSD__");
 894 # endif
 895 #endif
 896
 897     /* TinyCC & gcc defines */
 898 #if PTR_SIZE == 4
 899     /* 32bit systems. */
 900     tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned int");
 901     tcc_define_symbol(s, "__PTRDIFF_TYPE__", "int");
 902     tcc_define_symbol(s, "__ILP32__", NULL);
 903 #elif LONG_SIZE == 4
 904     /* 64bit Windows. */
 905     tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned long long");
 906     tcc_define_symbol(s, "__PTRDIFF_TYPE__", "long long");
 907     tcc_define_symbol(s, "__LLP64__", NULL);
 908 #else
 909     /* Other 64bit systems. */
 910     tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned long");
 911     tcc_define_symbol(s, "__PTRDIFF_TYPE__", "long");
 912     tcc_define_symbol(s, "__LP64__", NULL);
 913 #endif
 914     tcc_define_symbol(s, "__SIZEOF_POINTER__", PTR_SIZE == 4 ? "4" : "8");
 915
 916 #ifdef TCC_TARGET_PE
 917     tcc_define_symbol(s, "__WCHAR_TYPE__", "unsigned short");
 918     tcc_define_symbol(s, "__WINT_TYPE__", "unsigned short");
 919 #else
 920     tcc_define_symbol(s, "__WCHAR_TYPE__", "int");
 921     /* wint_t is unsigned int by default, but (signed) int on BSDs
 922        and unsigned short on windows.  Other OSes might have still
 923        other conventions, sigh.  */
 924 # if defined(__FreeBSD__) || defined (__FreeBSD_kernel__) \
 925   || defined(__NetBSD__) || defined(__OpenBSD__)
 926     tcc_define_symbol(s, "__WINT_TYPE__", "int");
 927 #  ifdef __FreeBSD__
 928     /* define __GNUC__ to have some useful stuff from sys/cdefs.h
 929        that are unconditionally used in FreeBSDs other system headers :/ */
 930     tcc_define_symbol(s, "__GNUC__", "2");
 931     tcc_define_symbol(s, "__GNUC_MINOR__", "7");
 932     tcc_define_symbol(s, "__builtin_alloca", "alloca");
 933 #  endif
 934 # else
 935     tcc_define_symbol(s, "__WINT_TYPE__", "unsigned int");
 936     /* glibc defines */
 937     tcc_define_symbol(s, "__REDIRECT(name, proto, alias)",
 938         "name proto __asm__ (#alias)");
 939     tcc_define_symbol(s, "__REDIRECT_NTH(name, proto, alias)",
 940         "name proto __asm__ (#alias) __THROW");
 941 # endif
 942     /* Some GCC builtins that are simple to express as macros.  */
 943     tcc_define_symbol(s, "__builtin_extract_return_addr(x)", "x");
 944 #endif /* ndef TCC_TARGET_PE */
 945 #ifdef TCC_TARGET_MACHO
 946     /* emulate APPLE-GCC to make libc's headerfiles compile: */
 947     tcc_define_symbol(s, "__APPLE__", "1");
 948     tcc_define_symbol(s, "__GNUC__", "4");   /* darwin emits warning on GCC<4 */
 949     tcc_define_symbol(s, "__APPLE_CC__", "1"); /* for <TargetConditionals.h> */
 950     tcc_define_symbol(s, "__builtin_alloca", "alloca"); /* as we claim GNUC */
 951
 952     /* avoids usage of GCC/clang specific builtins in libc-headerfiles: */
 953     tcc_define_symbol(s, "__FINITE_MATH_ONLY__", "1");
 954     tcc_define_symbol(s, "_FORTIFY_SOURCE", "0");
 955 #endif /* ndef TCC_TARGET_MACHO */
 956     return s;
 957 }
 958
 959 LIBTCCAPI void tcc_delete(TCCState *s1)
 960 {
 961     /* free sections */
 962     tccelf_delete(s1);
 963
 964     /* free library paths */
 965     dynarray_reset(&s1->library_paths, &s1->nb_library_paths);
 966     dynarray_reset(&s1->crt_paths, &s1->nb_crt_paths);
 967
 968     /* free include paths */
 969     dynarray_reset(&s1->include_paths, &s1->nb_include_paths);
 970     dynarray_reset(&s1->sysinclude_paths, &s1->nb_sysinclude_paths);
 971
 972     tcc_free(s1->tcc_lib_path);
 973     tcc_free(s1->soname);
 974     tcc_free(s1->rpath);
 975     tcc_free(s1->init_symbol);
 976     tcc_free(s1->fini_symbol);
 977     tcc_free(s1->outfile);
 978     tcc_free(s1->deps_outfile);
 979     dynarray_reset(&s1->files, &s1->nb_files);
 980     dynarray_reset(&s1->target_deps, &s1->nb_target_deps);
 981     dynarray_reset(&s1->pragma_libs, &s1->nb_pragma_libs);
 982     dynarray_reset(&s1->argv, &s1->argc);
 983
 984     cstr_free(&s1->cmdline_defs);
 985     cstr_free(&s1->cmdline_incl);
 986 #ifdef TCC_IS_NATIVE
 987     /* free runtime memory */
 988     tcc_run_free(s1);
 989 #endif
 990
 991     tcc_free(s1);
 992 #ifdef MEM_DEBUG
 993     if (0 == --nb_states)
 994         tcc_memcheck();
 995 #endif
 996 }
 997
 998 LIBTCCAPI int tcc_set_output_type(TCCState *s, int output_type)
 999 {
1000     s->output_type = output_type;
1001
1002     /* always elf for objects */
1003     if (output_type == TCC_OUTPUT_OBJ)
1004         s->output_format = TCC_OUTPUT_FORMAT_ELF;
1005
1006     if (s->char_is_unsigned)
1007         tcc_define_symbol(s, "__CHAR_UNSIGNED__", NULL);
1008
1009     if (s->cversion == 201112) {
1010         tcc_undefine_symbol(s, "__STDC_VERSION__");
1011         tcc_define_symbol(s, "__STDC_VERSION__", "201112L");
1012         tcc_define_symbol(s, "__STDC_NO_ATOMICS__", NULL);
1013         tcc_define_symbol(s, "__STDC_NO_COMPLEX__", NULL);
1014         tcc_define_symbol(s, "__STDC_NO_THREADS__", NULL);
1015 #ifndef TCC_TARGET_PE
1016         /* on Linux, this conflicts with a define introduced by
1017            /usr/include/stdc-predef.h included by glibc libs
1018         tcc_define_symbol(s, "__STDC_ISO_10646__", "201605L"); */
1019         tcc_define_symbol(s, "__STDC_UTF_16__", NULL);
1020         tcc_define_symbol(s, "__STDC_UTF_32__", NULL);
1021 #endif
1022     }
1023
1024     if (s->optimize > 0)
1025         tcc_define_symbol(s, "__OPTIMIZE__", NULL);
1026
1027     if (s->option_pthread)
1028         tcc_define_symbol(s, "_REENTRANT", NULL);
1029
1030     if (!s->nostdinc) {
1031         /* default include paths */
1032         /* -isystem paths have already been handled */
1033         tcc_add_sysinclude_path(s, CONFIG_TCC_SYSINCLUDEPATHS);
1034     }
1035
1036 #ifdef CONFIG_TCC_BCHECK
1037     if (s->do_bounds_check) {
1038         /* if bound checking, then add corresponding sections */
1039         tccelf_bounds_new(s);
1040         /* define symbol */
1041         tcc_define_symbol(s, "__BOUNDS_CHECKING_ON", NULL);
1042     }
1043 #endif
1044     if (s->do_debug) {
1045         /* add debug sections */
1046         tccelf_stab_new(s);
1047     }
1048
1049     tcc_add_library_path(s, CONFIG_TCC_LIBPATHS);
1050
1051 #ifdef TCC_TARGET_PE
1052 # ifdef _WIN32
1053     if (!s->nostdlib && output_type != TCC_OUTPUT_OBJ)
1054         tcc_add_systemdir(s);
1055 # endif
1056 #else
1057     /* paths for crt objects */
1058     tcc_split_path(s, &s->crt_paths, &s->nb_crt_paths, CONFIG_TCC_CRTPREFIX);
1059     /* add libc crt1/crti objects */
1060     if ((output_type == TCC_OUTPUT_EXE || output_type == TCC_OUTPUT_DLL) &&
1061         !s->nostdlib) {
1062 #ifndef TCC_TARGET_MACHO
1063         /* Mach-O with LC_MAIN doesn't need any crt startup code.  */
1064         if (output_type != TCC_OUTPUT_DLL)
1065             tcc_add_crt(s, "crt1.o");
1066         tcc_add_crt(s, "crti.o");
1067 #endif
1068     }
1069 #endif
1070     return 0;
1071 }
1072
1073 LIBTCCAPI int tcc_add_include_path(TCCState *s, const char *pathname)
1074 {
1075     tcc_split_path(s, &s->include_paths, &s->nb_include_paths, pathname);
1076     return 0;
1077 }
1078
1079 LIBTCCAPI int tcc_add_sysinclude_path(TCCState *s, const char *pathname)
1080 {
1081     tcc_split_path(s, &s->sysinclude_paths, &s->nb_sysinclude_paths, pathname);
1082     return 0;
1083 }
1084
1085 ST_FUNC int tcc_add_file_internal(TCCState *s1, const char *filename, int flags)
1086 {
1087     int fd, ret;
1088
1089     /* open the file */
1090     fd = _tcc_open(s1, filename);
1091     if (fd < 0) {
1092         if (flags & AFF_PRINT_ERROR)
1093             tcc_error_noabort("file '%s' not found", filename);
1094         return -1;
1095     }
1096
1097     s1->current_filename = filename;
1098     if (flags & AFF_TYPE_BIN) {
1099         ElfW(Ehdr) ehdr;
1100         int obj_type;
1101
1102         obj_type = tcc_object_type(fd, &ehdr);
1103         lseek(fd, 0, SEEK_SET);
1104
1105 #ifdef TCC_TARGET_MACHO
1106         if (0 == obj_type && 0 == strcmp(tcc_fileextension(filename), ".dylib"))
1107             obj_type = AFF_BINTYPE_DYN;
1108 #endif
1109
1110         switch (obj_type) {
1111         case AFF_BINTYPE_REL:
1112             ret = tcc_load_object_file(s1, fd, 0);
1113             break;
1114 #ifndef TCC_TARGET_PE
1115         case AFF_BINTYPE_DYN:
1116             if (s1->output_type == TCC_OUTPUT_MEMORY) {
1117                 ret = 0;
1118 #ifdef TCC_IS_NATIVE
1119                 if (NULL == dlopen(filename, RTLD_GLOBAL | RTLD_LAZY))
1120                     ret = -1;
1121 #endif
1122             } else {
1123 #ifndef TCC_TARGET_MACHO
1124                 ret = tcc_load_dll(s1, fd, filename,
1125                                    (flags & AFF_REFERENCED_DLL) != 0);
1126 #else
1127                 ret = macho_load_dll(s1, fd, filename,
1128                                      (flags & AFF_REFERENCED_DLL) != 0);
1129 #endif
1130             }
1131             break;
1132 #endif
1133         case AFF_BINTYPE_AR:
1134             ret = tcc_load_archive(s1, fd, !(flags & AFF_WHOLE_ARCHIVE));
1135             break;
1136 #ifdef TCC_TARGET_COFF
1137         case AFF_BINTYPE_C67:
1138             ret = tcc_load_coff(s1, fd);
1139             break;
1140 #endif
1141         default:
1142 #ifdef TCC_TARGET_PE
1143             ret = pe_load_file(s1, filename, fd);
1144 #elif defined(TCC_TARGET_MACHO)
1145             ret = -1;
1146 #else
1147             /* as GNU ld, consider it is an ld script if not recognized */
1148             ret = tcc_load_ldscript(s1, fd);
1149 #endif
1150             if (ret < 0)
1151                 tcc_error_noabort("%s: unrecognized file type %d", filename,
1152                                   obj_type);
1153             break;
1154         }
1155         close(fd);
1156     } else {
1157         /* update target deps */
1158         dynarray_add(&s1->target_deps, &s1->nb_target_deps, tcc_strdup(filename));
1159         ret = tcc_compile(s1, flags, filename, fd);
1160     }
1161     s1->current_filename = NULL;
1162     return ret;
1163 }
1164
1165 LIBTCCAPI int tcc_add_file(TCCState *s, const char *filename)
1166 {
1167     int filetype = s->filetype;
1168     if (0 == (filetype & AFF_TYPE_MASK)) {
1169         /* use a file extension to detect a filetype */
1170         const char *ext = tcc_fileextension(filename);
1171         if (ext[0]) {
1172             ext++;
1173             if (!strcmp(ext, "S"))
1174                 filetype = AFF_TYPE_ASMPP;
1175             else if (!strcmp(ext, "s"))
1176                 filetype = AFF_TYPE_ASM;
1177             else if (!PATHCMP(ext, "c") || !PATHCMP(ext, "i"))
1178                 filetype = AFF_TYPE_C;
1179             else
1180                 filetype |= AFF_TYPE_BIN;
1181         } else {
1182             filetype = AFF_TYPE_C;
1183         }
1184     }
1185     return tcc_add_file_internal(s, filename, filetype | AFF_PRINT_ERROR);
1186 }
1187
1188 LIBTCCAPI int tcc_add_library_path(TCCState *s, const char *pathname)
1189 {
1190     tcc_split_path(s, &s->library_paths, &s->nb_library_paths, pathname);
1191     return 0;
1192 }
1193
1194 static int tcc_add_library_internal(TCCState *s, const char *fmt,
1195     const char *filename, int flags, char **paths, int nb_paths)
1196 {
1197     char buf[1024];
1198     int i;
1199
1200     for(i = 0; i < nb_paths; i++) {
1201         snprintf(buf, sizeof(buf), fmt, paths[i], filename);
1202         if (tcc_add_file_internal(s, buf, flags | AFF_TYPE_BIN) == 0)
1203             return 0;
1204     }
1205     return -1;
1206 }
1207
1208 /* find and load a dll. Return non zero if not found */
1209 /* XXX: add '-rpath' option support ? */
1210 ST_FUNC int tcc_add_dll(TCCState *s, const char *filename, int flags)
1211 {
1212     return tcc_add_library_internal(s, "%s/%s", filename, flags,
1213         s->library_paths, s->nb_library_paths);
1214 }
1215
1216 #ifndef TCC_TARGET_PE
1217 ST_FUNC int tcc_add_crt(TCCState *s1, const char *filename)
1218 {
1219     if (-1 == tcc_add_library_internal(s1, "%s/%s",
1220         filename, 0, s1->crt_paths, s1->nb_crt_paths))
1221         tcc_error_noabort("file '%s' not found", filename);
1222     return 0;
1223 }
1224 #endif
1225
1226 /* the library name is the same as the argument of the '-l' option */
1227 LIBTCCAPI int tcc_add_library(TCCState *s, const char *libraryname)
1228 {
1229 #if defined TCC_TARGET_PE
1230     const char *libs[] = { "%s/%s.def", "%s/lib%s.def", "%s/%s.dll", "%s/lib%s.dll", "%s/lib%s.a", NULL };
1231     const char **pp = s->static_link ? libs + 4 : libs;
1232 #elif defined TCC_TARGET_MACHO
1233     const char *libs[] = { "%s/lib%s.dylib", "%s/lib%s.a", NULL };
1234     const char **pp = s->static_link ? libs + 1 : libs;
1235 #else
1236     const char *libs[] = { "%s/lib%s.so", "%s/lib%s.a", NULL };
1237     const char **pp = s->static_link ? libs + 1 : libs;
1238 #endif
1239     int flags = s->filetype & AFF_WHOLE_ARCHIVE;
1240     while (*pp) {
1241         if (0 == tcc_add_library_internal(s, *pp,
1242             libraryname, flags, s->library_paths, s->nb_library_paths))
1243             return 0;
1244         ++pp;
1245     }
1246     return -1;
1247 }
1248
1249 PUB_FUNC int tcc_add_library_err(TCCState *s1, const char *libname)
1250 {
1251     int ret = tcc_add_library(s1, libname);
1252     if (ret < 0)
1253         tcc_error_noabort("library '%s' not found", libname);
1254     return ret;
1255 }
1256
1257 /* handle #pragma comment(lib,) */
1258 ST_FUNC void tcc_add_pragma_libs(TCCState *s1)
1259 {
1260     int i;
1261     for (i = 0; i < s1->nb_pragma_libs; i++)
1262         tcc_add_library_err(s1, s1->pragma_libs[i]);
1263 }
1264
1265 LIBTCCAPI int tcc_add_symbol(TCCState *s1, const char *name, const void *val)
1266 {
1267 #ifdef TCC_TARGET_PE
1268     /* On x86_64 'val' might not be reachable with a 32bit offset.
1269        So it is handled here as if it were in a DLL. */
1270     pe_putimport(s1, 0, name, (uintptr_t)val);
1271 #else
1272     set_elf_sym(symtab_section, (uintptr_t)val, 0,
1273         ELFW(ST_INFO)(STB_GLOBAL, STT_NOTYPE), 0,
1274         SHN_ABS, name);
1275 #endif
1276     return 0;
1277 }
1278
1279 LIBTCCAPI void tcc_set_lib_path(TCCState *s, const char *path)
1280 {
1281     tcc_free(s->tcc_lib_path);
1282     s->tcc_lib_path = tcc_strdup(path);
1283 }
1284
1285 #define WD_ALL    0x0001 /* warning is activated when using -Wall */
1286 #define FD_INVERT 0x0002 /* invert value before storing */
1287
1288 typedef struct FlagDef {
1289     uint16_t offset;
1290     uint16_t flags;
1291     const char *name;
1292 } FlagDef;
1293
1294 static int no_flag(const char **pp)
1295 {
1296     const char *p = *pp;
1297     if (*p != 'n' || *++p != 'o' || *++p != '-')
1298         return 0;
1299     *pp = p + 1;
1300     return 1;
1301 }
1302
1303 ST_FUNC int set_flag(TCCState *s, const FlagDef *flags, const char *name)
1304 {
1305     int value, ret;
1306     const FlagDef *p;
1307     const char *r;
1308
1309     value = 1;
1310     r = name;
1311     if (no_flag(&r))
1312         value = 0;
1313
1314     for (ret = -1, p = flags; p->name; ++p) {
1315         if (ret) {
1316             if (strcmp(r, p->name))
1317                 continue;
1318         } else {
1319             if (0 == (p->flags & WD_ALL))
1320                 continue;
1321         }
1322         if (p->offset) {
1323             *((unsigned char *)s + p->offset) =
1324                 p->flags & FD_INVERT ? !value : value;
1325             if (ret)
1326                 return 0;
1327         } else {
1328             ret = 0;
1329         }
1330     }
1331     return ret;
1332 }
1333
1334 static int strstart(const char *val, const char **str)
1335 {
1336     const char *p, *q;
1337     p = *str;
1338     q = val;
1339     while (*q) {
1340         if (*p != *q)
1341             return 0;
1342         p++;
1343         q++;
1344     }
1345     *str = p;
1346     return 1;
1347 }
1348
1349 /* Like strstart, but automatically takes into account that ld options can
1350  *
1351  * - start with double or single dash (e.g. '--soname' or '-soname')
1352  * - arguments can be given as separate or after '=' (e.g. '-Wl,-soname,x.so'
1353  *   or '-Wl,-soname=x.so')
1354  *
1355  * you provide `val` always in 'option[=]' form (no leading -)
1356  */
1357 static int link_option(const char *str, const char *val, const char **ptr)
1358 {
1359     const char *p, *q;
1360     int ret;
1361
1362     /* there should be 1 or 2 dashes */
1363     if (*str++ != '-')
1364         return 0;
1365     if (*str == '-')
1366         str++;
1367
1368     /* then str & val should match (potentially up to '=') */
1369     p = str;
1370     q = val;
1371
1372     ret = 1;
1373     if (q[0] == '?') {
1374         ++q;
1375         if (no_flag(&p))
1376             ret = -1;
1377     }
1378
1379     while (*q != '\0' && *q != '=') {
1380         if (*p != *q)
1381             return 0;
1382         p++;
1383         q++;
1384     }
1385
1386     /* '=' near eos means ',' or '=' is ok */
1387     if (*q == '=') {
1388         if (*p == 0)
1389             *ptr = p;
1390         if (*p != ',' && *p != '=')
1391             return 0;
1392         p++;
1393     } else if (*p) {
1394         return 0;
1395     }
1396     *ptr = p;
1397     return ret;
1398 }
1399
1400 static const char *skip_linker_arg(const char **str)
1401 {
1402     const char *s1 = *str;
1403     const char *s2 = strchr(s1, ',');
1404     *str = s2 ? s2++ : (s2 = s1 + strlen(s1));
1405     return s2;
1406 }
1407
1408 static void copy_linker_arg(char **pp, const char *s, int sep)
1409 {
1410     const char *q = s;
1411     char *p = *pp;
1412     int l = 0;
1413     if (p && sep)
1414         p[l = strlen(p)] = sep, ++l;
1415     skip_linker_arg(&q);
1416     pstrncpy(l + (*pp = tcc_realloc(p, q - s + l + 1)), s, q - s);
1417 }
1418
1419 /* set linker options */
1420 static int tcc_set_linker(TCCState *s, const char *option)
1421 {
1422     TCCState *s1 = s;
1423     while (*option) {
1424
1425         const char *p = NULL;
1426         char *end = NULL;
1427         int ignoring = 0;
1428         int ret;
1429
1430         if (link_option(option, "Bsymbolic", &p)) {
1431             s->symbolic = 1;
1432         } else if (link_option(option, "nostdlib", &p)) {
1433             s->nostdlib = 1;
1434         } else if (link_option(option, "fini=", &p)) {
1435             copy_linker_arg(&s->fini_symbol, p, 0);
1436             ignoring = 1;
1437         } else if (link_option(option, "image-base=", &p)
1438                 || link_option(option, "Ttext=", &p)) {
1439             s->text_addr = strtoull(p, &end, 16);
1440             s->has_text_addr = 1;
1441         } else if (link_option(option, "init=", &p)) {
1442             copy_linker_arg(&s->init_symbol, p, 0);
1443             ignoring = 1;
1444         } else if (link_option(option, "oformat=", &p)) {
1445 #if defined(TCC_TARGET_PE)
1446             if (strstart("pe-", &p)) {
1447 #elif PTR_SIZE == 8
1448             if (strstart("elf64-", &p)) {
1449 #else
1450             if (strstart("elf32-", &p)) {
1451 #endif
1452                 s->output_format = TCC_OUTPUT_FORMAT_ELF;
1453             } else if (!strcmp(p, "binary")) {
1454                 s->output_format = TCC_OUTPUT_FORMAT_BINARY;
1455 #ifdef TCC_TARGET_COFF
1456             } else if (!strcmp(p, "coff")) {
1457                 s->output_format = TCC_OUTPUT_FORMAT_COFF;
1458 #endif
1459             } else
1460                 goto err;
1461
1462         } else if (link_option(option, "as-needed", &p)) {
1463             ignoring = 1;
1464         } else if (link_option(option, "O", &p)) {
1465             ignoring = 1;
1466         } else if (link_option(option, "export-all-symbols", &p)) {
1467             s->rdynamic = 1;
1468         } else if (link_option(option, "export-dynamic", &p)) {
1469             s->rdynamic = 1;
1470         } else if (link_option(option, "rpath=", &p)) {
1471             copy_linker_arg(&s->rpath, p, ':');
1472         } else if (link_option(option, "enable-new-dtags", &p)) {
1473             s->enable_new_dtags = 1;
1474         } else if (link_option(option, "section-alignment=", &p)) {
1475             s->section_align = strtoul(p, &end, 16);
1476         } else if (link_option(option, "soname=", &p)) {
1477             copy_linker_arg(&s->soname, p, 0);
1478 #ifdef TCC_TARGET_PE
1479         } else if (link_option(option, "large-address-aware", &p)) {
1480             s->pe_characteristics |= 0x20;
1481         } else if (link_option(option, "file-alignment=", &p)) {
1482             s->pe_file_align = strtoul(p, &end, 16);
1483         } else if (link_option(option, "stack=", &p)) {
1484             s->pe_stack_size = strtoul(p, &end, 10);
1485         } else if (link_option(option, "subsystem=", &p)) {
1486 #if defined(TCC_TARGET_I386) || defined(TCC_TARGET_X86_64)
1487             if (!strcmp(p, "native")) {
1488                 s->pe_subsystem = 1;
1489             } else if (!strcmp(p, "console")) {
1490                 s->pe_subsystem = 3;
1491             } else if (!strcmp(p, "gui") || !strcmp(p, "windows")) {
1492                 s->pe_subsystem = 2;
1493             } else if (!strcmp(p, "posix")) {
1494                 s->pe_subsystem = 7;
1495             } else if (!strcmp(p, "efiapp")) {
1496                 s->pe_subsystem = 10;
1497             } else if (!strcmp(p, "efiboot")) {
1498                 s->pe_subsystem = 11;
1499             } else if (!strcmp(p, "efiruntime")) {
1500                 s->pe_subsystem = 12;
1501             } else if (!strcmp(p, "efirom")) {
1502                 s->pe_subsystem = 13;
1503 #elif defined(TCC_TARGET_ARM)
1504             if (!strcmp(p, "wince")) {
1505                 s->pe_subsystem = 9;
1506 #endif
1507             } else
1508                 goto err;
1509 #endif
1510         } else if (ret = link_option(option, "?whole-archive", &p), ret) {
1511             if (ret > 0)
1512                 s->filetype |= AFF_WHOLE_ARCHIVE;
1513             else
1514                 s->filetype &= ~AFF_WHOLE_ARCHIVE;
1515         } else if (p) {
1516             return 0;
1517         } else {
1518     err:
1519             tcc_error("unsupported linker option '%s'", option);
1520         }
1521
1522         if (ignoring && s->warn_unsupported)
1523             tcc_warning("unsupported linker option '%s'", option);
1524
1525         option = skip_linker_arg(&p);
1526     }
1527     return 1;
1528 }
1529
1530 typedef struct TCCOption {
1531     const char *name;
1532     uint16_t index;
1533     uint16_t flags;
1534 } TCCOption;
1535
1536 enum {
1537     TCC_OPTION_HELP,
1538     TCC_OPTION_HELP2,
1539     TCC_OPTION_v,
1540     TCC_OPTION_I,
1541     TCC_OPTION_D,
1542     TCC_OPTION_U,
1543     TCC_OPTION_P,
1544     TCC_OPTION_L,
1545     TCC_OPTION_B,
1546     TCC_OPTION_l,
1547     TCC_OPTION_bench,
1548     TCC_OPTION_bt,
1549     TCC_OPTION_b,
1550     TCC_OPTION_ba,
1551     TCC_OPTION_g,
1552     TCC_OPTION_c,
1553     TCC_OPTION_dumpversion,
1554     TCC_OPTION_d,
1555     TCC_OPTION_static,
1556     TCC_OPTION_std,
1557     TCC_OPTION_shared,
1558     TCC_OPTION_soname,
1559     TCC_OPTION_o,
1560     TCC_OPTION_r,
1561     TCC_OPTION_s,
1562     TCC_OPTION_traditional,
1563     TCC_OPTION_Wl,
1564     TCC_OPTION_Wp,
1565     TCC_OPTION_W,
1566     TCC_OPTION_O,
1567     TCC_OPTION_mfloat_abi,
1568     TCC_OPTION_m,
1569     TCC_OPTION_f,
1570     TCC_OPTION_isystem,
1571     TCC_OPTION_iwithprefix,
1572     TCC_OPTION_include,
1573     TCC_OPTION_nostdinc,
1574     TCC_OPTION_nostdlib,
1575     TCC_OPTION_print_search_dirs,
1576     TCC_OPTION_rdynamic,
1577     TCC_OPTION_param,
1578     TCC_OPTION_pedantic,
1579     TCC_OPTION_pthread,
1580     TCC_OPTION_run,
1581     TCC_OPTION_w,
1582     TCC_OPTION_pipe,
1583     TCC_OPTION_E,
1584     TCC_OPTION_MD,
1585     TCC_OPTION_MF,
1586     TCC_OPTION_x,
1587     TCC_OPTION_ar,
1588     TCC_OPTION_impdef
1589 };
1590
1591 #define TCC_OPTION_HAS_ARG 0x0001
1592 #define TCC_OPTION_NOSEP   0x0002 /* cannot have space before option and arg */
1593
1594 static const TCCOption tcc_options[] = {
1595     { "h", TCC_OPTION_HELP, 0 },
1596     { "-help", TCC_OPTION_HELP, 0 },
1597     { "?", TCC_OPTION_HELP, 0 },
1598     { "hh", TCC_OPTION_HELP2, 0 },
1599     { "v", TCC_OPTION_v, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1600     { "-version", TCC_OPTION_v, 0 }, /* handle as verbose, also prints version*/
1601     { "I", TCC_OPTION_I, TCC_OPTION_HAS_ARG },
1602     { "D", TCC_OPTION_D, TCC_OPTION_HAS_ARG },
1603     { "U", TCC_OPTION_U, TCC_OPTION_HAS_ARG },
1604     { "P", TCC_OPTION_P, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1605     { "L", TCC_OPTION_L, TCC_OPTION_HAS_ARG },
1606     { "B", TCC_OPTION_B, TCC_OPTION_HAS_ARG },
1607     { "l", TCC_OPTION_l, TCC_OPTION_HAS_ARG },
1608     { "bench", TCC_OPTION_bench, 0 },
1609 #ifdef CONFIG_TCC_BACKTRACE
1610     { "bt", TCC_OPTION_bt, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1611 #endif
1612 #ifdef CONFIG_TCC_BCHECK
1613     { "b", TCC_OPTION_b, 0 },
1614 #endif
1615     { "g", TCC_OPTION_g, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1616     { "c", TCC_OPTION_c, 0 },
1617     { "dumpversion", TCC_OPTION_dumpversion, 0},
1618     { "d", TCC_OPTION_d, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1619     { "static", TCC_OPTION_static, 0 },
1620     { "std", TCC_OPTION_std, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1621     { "shared", TCC_OPTION_shared, 0 },
1622     { "soname", TCC_OPTION_soname, TCC_OPTION_HAS_ARG },
1623     { "o", TCC_OPTION_o, TCC_OPTION_HAS_ARG },
1624     { "-param", TCC_OPTION_param, TCC_OPTION_HAS_ARG },
1625     { "pedantic", TCC_OPTION_pedantic, 0},
1626     { "pthread", TCC_OPTION_pthread, 0},
1627     { "run", TCC_OPTION_run, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1628     { "rdynamic", TCC_OPTION_rdynamic, 0 },
1629     { "r", TCC_OPTION_r, 0 },
1630     { "s", TCC_OPTION_s, 0 },
1631     { "traditional", TCC_OPTION_traditional, 0 },
1632     { "Wl,", TCC_OPTION_Wl, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1633     { "Wp,", TCC_OPTION_Wp, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1634     { "W", TCC_OPTION_W, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1635     { "O", TCC_OPTION_O, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1636 #ifdef TCC_TARGET_ARM
1637     { "mfloat-abi", TCC_OPTION_mfloat_abi, TCC_OPTION_HAS_ARG },
1638 #endif
1639     { "m", TCC_OPTION_m, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1640     { "f", TCC_OPTION_f, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1641     { "isystem", TCC_OPTION_isystem, TCC_OPTION_HAS_ARG },
1642     { "include", TCC_OPTION_include, TCC_OPTION_HAS_ARG },
1643     { "nostdinc", TCC_OPTION_nostdinc, 0 },
1644     { "nostdlib", TCC_OPTION_nostdlib, 0 },
1645     { "print-search-dirs", TCC_OPTION_print_search_dirs, 0 },
1646     { "w", TCC_OPTION_w, 0 },
1647     { "pipe", TCC_OPTION_pipe, 0},
1648     { "E", TCC_OPTION_E, 0},
1649     { "MD", TCC_OPTION_MD, 0},
1650     { "MF", TCC_OPTION_MF, TCC_OPTION_HAS_ARG },
1651     { "x", TCC_OPTION_x, TCC_OPTION_HAS_ARG },
1652     { "ar", TCC_OPTION_ar, 0},
1653 #ifdef TCC_TARGET_PE
1654     { "impdef", TCC_OPTION_impdef, 0},
1655 #endif
1656     { NULL, 0, 0 },
1657 };
1658
1659 static const FlagDef options_W[] = {
1660     { 0, 0, "all" },
1661     { offsetof(TCCState, warn_unsupported), 0, "unsupported" },
1662     { offsetof(TCCState, warn_write_strings), 0, "write-strings" },
1663     { offsetof(TCCState, warn_error), 0, "error" },
1664     { offsetof(TCCState, warn_gcc_compat), 0, "gcc-compat" },
1665     { offsetof(TCCState, warn_implicit_function_declaration), WD_ALL,
1666       "implicit-function-declaration" },
1667     { 0, 0, NULL }
1668 };
1669
1670 static const FlagDef options_f[] = {
1671     { offsetof(TCCState, char_is_unsigned), 0, "unsigned-char" },
1672     { offsetof(TCCState, char_is_unsigned), FD_INVERT, "signed-char" },
1673     { offsetof(TCCState, nocommon), FD_INVERT, "common" },
1674     { offsetof(TCCState, leading_underscore), 0, "leading-underscore" },
1675     { offsetof(TCCState, ms_extensions), 0, "ms-extensions" },
1676     { offsetof(TCCState, dollars_in_identifiers), 0, "dollars-in-identifiers" },
1677     { 0, 0, NULL }
1678 };
1679
1680 static const FlagDef options_m[] = {
1681     { offsetof(TCCState, ms_bitfields), 0, "ms-bitfields" },
1682 #ifdef TCC_TARGET_X86_64
1683     { offsetof(TCCState, nosse), FD_INVERT, "sse" },
1684 #endif
1685     { 0, 0, NULL }
1686 };
1687
1688 static void parse_option_D(TCCState *s1, const char *optarg)
1689 {
1690     char *sym = tcc_strdup(optarg);
1691     char *value = strchr(sym, '=');
1692     if (value)
1693         *value++ = '\0';
1694     tcc_define_symbol(s1, sym, value);
1695     tcc_free(sym);
1696 }
1697
1698 static void args_parser_add_file(TCCState *s, const char* filename, int filetype)
1699 {
1700     struct filespec *f = tcc_malloc(sizeof *f + strlen(filename));
1701     f->type = filetype;
1702     strcpy(f->name, filename);
1703     dynarray_add(&s->files, &s->nb_files, f);
1704 }
1705
1706 static int args_parser_make_argv(const char *r, int *argc, char ***argv)
1707 {
1708     int ret = 0, q, c;
1709     CString str;
1710     for(;;) {
1711         while (c = (unsigned char)*r, c && c <= ' ')
1712           ++r;
1713         if (c == 0)
1714             break;
1715         q = 0;
1716         cstr_new(&str);
1717         while (c = (unsigned char)*r, c) {
1718             ++r;
1719             if (c == '\\' && (*r == '"' || *r == '\\')) {
1720                 c = *r++;
1721             } else if (c == '"') {
1722                 q = !q;
1723                 continue;
1724             } else if (q == 0 && c <= ' ') {
1725                 break;
1726             }
1727             cstr_ccat(&str, c);
1728         }
1729         cstr_ccat(&str, 0);
1730         //printf("<%s>\n", str.data), fflush(stdout);
1731         dynarray_add(argv, argc, tcc_strdup(str.data));
1732         cstr_free(&str);
1733         ++ret;
1734     }
1735     return ret;
1736 }
1737
1738 /* read list file */
1739 static void args_parser_listfile(TCCState *s,
1740     const char *filename, int optind, int *pargc, char ***pargv)
1741 {
1742     TCCState *s1 = s;
1743     int fd, i;
1744     size_t len;
1745     char *p;
1746     int argc = 0;
1747     char **argv = NULL;
1748
1749     fd = open(filename, O_RDONLY | O_BINARY);
1750     if (fd < 0)
1751         tcc_error("listfile '%s' not found", filename);
1752
1753     len = lseek(fd, 0, SEEK_END);
1754     p = tcc_malloc(len + 1), p[len] = 0;
1755     lseek(fd, 0, SEEK_SET), read(fd, p, len), close(fd);
1756
1757     for (i = 0; i < *pargc; ++i)
1758         if (i == optind)
1759             args_parser_make_argv(p, &argc, &argv);
1760         else
1761             dynarray_add(&argv, &argc, tcc_strdup((*pargv)[i]));
1762
1763     tcc_free(p);
1764     dynarray_reset(&s->argv, &s->argc);
1765     *pargc = s->argc = argc, *pargv = s->argv = argv;
1766 }
1767
1768 PUB_FUNC int tcc_parse_args(TCCState *s, int *pargc, char ***pargv, int optind)
1769 {
1770     TCCState *s1 = s;
1771     const TCCOption *popt;
1772     const char *optarg, *r;
1773     const char *run = NULL;
1774     int x;
1775     CString linker_arg; /* collect -Wl options */
1776     int tool = 0, arg_start = 0, noaction = optind;
1777     char **argv = *pargv;
1778     int argc = *pargc;
1779
1780     cstr_new(&linker_arg);
1781
1782     while (optind < argc) {
1783         r = argv[optind];
1784         if (r[0] == '@' && r[1] != '\0') {
1785             args_parser_listfile(s, r + 1, optind, &argc, &argv);
1786             continue;
1787         }
1788         optind++;
1789         if (tool) {
1790             if (r[0] == '-' && r[1] == 'v' && r[2] == 0)
1791                 ++s->verbose;
1792             continue;
1793         }
1794 reparse:
1795         if (r[0] != '-' || r[1] == '\0') {
1796             if (r[0] != '@') /* allow "tcc file(s) -run @ args ..." */
1797                 args_parser_add_file(s, r, s->filetype);
1798             if (run) {
1799                 tcc_set_options(s, run);
1800                 arg_start = optind - 1;
1801                 break;
1802             }
1803             continue;
1804         }
1805
1806         /* find option in table */
1807         for(popt = tcc_options; ; ++popt) {
1808             const char *p1 = popt->name;
1809             const char *r1 = r + 1;
1810             if (p1 == NULL)
1811                 tcc_error("invalid option -- '%s'", r);
1812             if (!strstart(p1, &r1))
1813                 continue;
1814             optarg = r1;
1815             if (popt->flags & TCC_OPTION_HAS_ARG) {
1816                 if (*r1 == '\0' && !(popt->flags & TCC_OPTION_NOSEP)) {
1817                     if (optind >= argc)
1818                 arg_err:
1819                         tcc_error("argument to '%s' is missing", r);
1820                     optarg = argv[optind++];
1821                 }
1822             } else if (*r1 != '\0')
1823                 continue;
1824             break;
1825         }
1826
1827         switch(popt->index) {
1828         case TCC_OPTION_HELP:
1829             x = OPT_HELP;
1830             goto extra_action;
1831         case TCC_OPTION_HELP2:
1832             x = OPT_HELP2;
1833             goto extra_action;
1834         case TCC_OPTION_I:
1835             tcc_add_include_path(s, optarg);
1836             break;
1837         case TCC_OPTION_D:
1838             parse_option_D(s, optarg);
1839             break;
1840         case TCC_OPTION_U:
1841             tcc_undefine_symbol(s, optarg);
1842             break;
1843         case TCC_OPTION_L:
1844             tcc_add_library_path(s, optarg);
1845             break;
1846         case TCC_OPTION_B:
1847             /* set tcc utilities path (mainly for tcc development) */
1848             tcc_set_lib_path(s, optarg);
1849             break;
1850         case TCC_OPTION_l:
1851             args_parser_add_file(s, optarg, AFF_TYPE_LIB | (s->filetype & ~AFF_TYPE_MASK));
1852             s->nb_libraries++;
1853             break;
1854         case TCC_OPTION_pthread:
1855             s->option_pthread = 1;
1856             break;
1857         case TCC_OPTION_bench:
1858             s->do_bench = 1;
1859             break;
1860 #ifdef CONFIG_TCC_BACKTRACE
1861         case TCC_OPTION_bt:
1862             s->rt_num_callers = atoi(optarg);
1863             s->do_backtrace = 1;
1864             s->do_debug = 1;
1865             break;
1866 #endif
1867 #ifdef CONFIG_TCC_BCHECK
1868         case TCC_OPTION_b:
1869             s->do_bounds_check = 1;
1870             s->do_backtrace = 1;
1871             s->do_debug = 1;
1872             break;
1873 #endif
1874         case TCC_OPTION_g:
1875             s->do_debug = 1;
1876             break;
1877         case TCC_OPTION_c:
1878             x = TCC_OUTPUT_OBJ;
1879         set_output_type:
1880             if (s->output_type)
1881                 tcc_warning("-%s: overriding compiler action already specified", popt->name);
1882             s->output_type = x;
1883             break;
1884         case TCC_OPTION_d:
1885             if (*optarg == 'D')
1886                 s->dflag = 3;
1887             else if (*optarg == 'M')
1888                 s->dflag = 7;
1889             else if (*optarg == 't')
1890                 s->dflag = 16;
1891             else if (isnum(*optarg))
1892                 s->g_debug |= atoi(optarg);
1893             else
1894                 goto unsupported_option;
1895             break;
1896         case TCC_OPTION_static:
1897             s->static_link = 1;
1898             break;
1899         case TCC_OPTION_std:
1900             if (strcmp(optarg, "=c11") == 0)
1901                 s->cversion = 201112;
1902             break;
1903         case TCC_OPTION_shared:
1904             x = TCC_OUTPUT_DLL;
1905             goto set_output_type;
1906         case TCC_OPTION_soname:
1907             s->soname = tcc_strdup(optarg);
1908             break;
1909         case TCC_OPTION_o:
1910             if (s->outfile) {
1911                 tcc_warning("multiple -o option");
1912                 tcc_free(s->outfile);
1913             }
1914             s->outfile = tcc_strdup(optarg);
1915             break;
1916         case TCC_OPTION_r:
1917             /* generate a .o merging several output files */
1918             s->option_r = 1;
1919             x = TCC_OUTPUT_OBJ;
1920             goto set_output_type;
1921         case TCC_OPTION_isystem:
1922             tcc_add_sysinclude_path(s, optarg);
1923             break;
1924         case TCC_OPTION_include:
1925             cstr_printf(&s->cmdline_incl, "#include \"%s\"\n", optarg);
1926             break;
1927         case TCC_OPTION_nostdinc:
1928             s->nostdinc = 1;
1929             break;
1930         case TCC_OPTION_nostdlib:
1931             s->nostdlib = 1;
1932             break;
1933         case TCC_OPTION_run:
1934 #ifndef TCC_IS_NATIVE
1935             tcc_error("-run is not available in a cross compiler");
1936 #endif
1937             run = optarg;
1938             x = TCC_OUTPUT_MEMORY;
1939             goto set_output_type;
1940         case TCC_OPTION_v:
1941             do ++s->verbose; while (*optarg++ == 'v');
1942             ++noaction;
1943             break;
1944         case TCC_OPTION_f:
1945             if (set_flag(s, options_f, optarg) < 0)
1946                 goto unsupported_option;
1947             break;
1948 #ifdef TCC_TARGET_ARM
1949         case TCC_OPTION_mfloat_abi:
1950             /* tcc doesn't support soft float yet */
1951             if (!strcmp(optarg, "softfp")) {
1952                 s->float_abi = ARM_SOFTFP_FLOAT;
1953                 tcc_undefine_symbol(s, "__ARM_PCS_VFP");
1954             } else if (!strcmp(optarg, "hard"))
1955                 s->float_abi = ARM_HARD_FLOAT;
1956             else
1957                 tcc_error("unsupported float abi '%s'", optarg);
1958             break;
1959 #endif
1960         case TCC_OPTION_m:
1961             if (set_flag(s, options_m, optarg) < 0) {
1962                 if (x = atoi(optarg), x != 32 && x != 64)
1963                     goto unsupported_option;
1964                 if (PTR_SIZE != x/8)
1965                     return x;
1966                 ++noaction;
1967             }
1968             break;
1969         case TCC_OPTION_W:
1970             s->warn_none = 0;
1971             if (optarg[0] && set_flag(s, options_W, optarg) < 0)
1972                 goto unsupported_option;
1973             break;
1974         case TCC_OPTION_w:
1975             s->warn_none = 1;
1976             break;
1977         case TCC_OPTION_rdynamic:
1978             s->rdynamic = 1;
1979             break;
1980         case TCC_OPTION_Wl:
1981             if (linker_arg.size)
1982                 --linker_arg.size, cstr_ccat(&linker_arg, ',');
1983             cstr_cat(&linker_arg, optarg, 0);
1984             if (tcc_set_linker(s, linker_arg.data))
1985                 cstr_free(&linker_arg);
1986             break;
1987         case TCC_OPTION_Wp:
1988             r = optarg;
1989             goto reparse;
1990         case TCC_OPTION_E:
1991             x = TCC_OUTPUT_PREPROCESS;
1992             goto set_output_type;
1993         case TCC_OPTION_P:
1994             s->Pflag = atoi(optarg) + 1;
1995             break;
1996         case TCC_OPTION_MD:
1997             s->gen_deps = 1;
1998             break;
1999         case TCC_OPTION_MF:
2000             s->deps_outfile = tcc_strdup(optarg);
2001             break;
2002         case TCC_OPTION_dumpversion:
2003             printf ("%s\n", TCC_VERSION);
2004             exit(0);
2005             break;
2006         case TCC_OPTION_x:
2007             x = 0;
2008             if (*optarg == 'c')
2009                 x = AFF_TYPE_C;
2010             else if (*optarg == 'a')
2011                 x = AFF_TYPE_ASMPP;
2012             else if (*optarg == 'b')
2013                 x = AFF_TYPE_BIN;
2014             else if (*optarg == 'n')
2015                 x = AFF_TYPE_NONE;
2016             else
2017                 tcc_warning("unsupported language '%s'", optarg);
2018             s->filetype = x | (s->filetype & ~AFF_TYPE_MASK);
2019             break;
2020         case TCC_OPTION_O:
2021             s->optimize = atoi(optarg);
2022             break;
2023         case TCC_OPTION_print_search_dirs:
2024             x = OPT_PRINT_DIRS;
2025             goto extra_action;
2026         case TCC_OPTION_impdef:
2027             x = OPT_IMPDEF;
2028             goto extra_action;
2029         case TCC_OPTION_ar:
2030             x = OPT_AR;
2031         extra_action:
2032             arg_start = optind - 1;
2033             if (arg_start != noaction)
2034                 tcc_error("cannot parse %s here", r);
2035             tool = x;
2036             break;
2037         case TCC_OPTION_traditional:
2038         case TCC_OPTION_pedantic:
2039         case TCC_OPTION_pipe:
2040         case TCC_OPTION_s:
2041             /* ignored */
2042             break;
2043         default:
2044 unsupported_option:
2045             if (s->warn_unsupported)
2046                 tcc_warning("unsupported option '%s'", r);
2047             break;
2048         }
2049     }
2050     if (linker_arg.size) {
2051         r = linker_arg.data;
2052         goto arg_err;
2053     }
2054     *pargc = argc - arg_start;
2055     *pargv = argv + arg_start;
2056     if (tool)
2057         return tool;
2058     if (optind != noaction)
2059         return 0;
2060     if (s->verbose == 2)
2061         return OPT_PRINT_DIRS;
2062     if (s->verbose)
2063         return OPT_V;
2064     return OPT_HELP;
2065 }
2066
2067 LIBTCCAPI void tcc_set_options(TCCState *s, const char *r)
2068 {
2069     char **argv = NULL;
2070     int argc = 0;
2071     args_parser_make_argv(r, &argc, &argv);
2072     tcc_parse_args(s, &argc, &argv, 0);
2073     dynarray_reset(&argv, &argc);
2074 }
2075
2076 PUB_FUNC void tcc_print_stats(TCCState *s1, unsigned total_time)
2077 {
2078     if (total_time < 1)
2079         total_time = 1;
2080     if (total_bytes < 1)
2081         total_bytes = 1;
2082     fprintf(stderr, "* %d idents, %d lines, %d bytes\n"
2083                     "* %0.3f s, %u lines/s, %0.1f MB/s\n",
2084            total_idents, total_lines, total_bytes,
2085            (double)total_time/1000,
2086            (unsigned)total_lines*1000/total_time,
2087            (double)total_bytes/1000/total_time);
2088 #ifdef MEM_DEBUG
2089     fprintf(stderr, "* %d bytes memory used\n", mem_max_size);
2090 #endif
2091 }