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, "_DONT_USE_CTYPE_INLINE_", "1");
 951     tcc_define_symbol(s, "__builtin_alloca", "alloca"); /* as we claim GNUC */
 952     /* used by math.h */
 953     tcc_define_symbol(s, "__builtin_huge_val()", "1e500");
 954     tcc_define_symbol(s, "__builtin_huge_valf()", "1e50f");
 955     tcc_define_symbol(s, "__builtin_huge_vall()", "1e5000L");
 956     tcc_define_symbol(s, "__builtin_nanf(ignored_string)", "__nan()");
 957     /* used by _fd_def.h */
 958     tcc_define_symbol(s, "__builtin_bzero(p, ignored_size)", "bzero(p, sizeof(*(p)))");
 959     /* avoids usage of GCC/clang specific builtins in libc-headerfiles: */
 960     tcc_define_symbol(s, "__FINITE_MATH_ONLY__", "1");
 961     tcc_define_symbol(s, "_FORTIFY_SOURCE", "0");
 962 #endif /* ndef TCC_TARGET_MACHO */
 963     return s;
 964 }
 965
 966 LIBTCCAPI void tcc_delete(TCCState *s1)
 967 {
 968     /* free sections */
 969     tccelf_delete(s1);
 970
 971     /* free library paths */
 972     dynarray_reset(&s1->library_paths, &s1->nb_library_paths);
 973     dynarray_reset(&s1->crt_paths, &s1->nb_crt_paths);
 974
 975     /* free include paths */
 976     dynarray_reset(&s1->include_paths, &s1->nb_include_paths);
 977     dynarray_reset(&s1->sysinclude_paths, &s1->nb_sysinclude_paths);
 978
 979     tcc_free(s1->tcc_lib_path);
 980     tcc_free(s1->soname);
 981     tcc_free(s1->rpath);
 982     tcc_free(s1->init_symbol);
 983     tcc_free(s1->fini_symbol);
 984     tcc_free(s1->outfile);
 985     tcc_free(s1->deps_outfile);
 986     dynarray_reset(&s1->files, &s1->nb_files);
 987     dynarray_reset(&s1->target_deps, &s1->nb_target_deps);
 988     dynarray_reset(&s1->pragma_libs, &s1->nb_pragma_libs);
 989     dynarray_reset(&s1->argv, &s1->argc);
 990
 991     cstr_free(&s1->cmdline_defs);
 992     cstr_free(&s1->cmdline_incl);
 993 #ifdef TCC_IS_NATIVE
 994     /* free runtime memory */
 995     tcc_run_free(s1);
 996 #endif
 997
 998     tcc_free(s1);
 999 #ifdef MEM_DEBUG
1000     if (0 == --nb_states)
1001         tcc_memcheck();
1002 #endif
1003 }
1004
1005 LIBTCCAPI int tcc_set_output_type(TCCState *s, int output_type)
1006 {
1007     s->output_type = output_type;
1008
1009     /* always elf for objects */
1010     if (output_type == TCC_OUTPUT_OBJ)
1011         s->output_format = TCC_OUTPUT_FORMAT_ELF;
1012
1013     if (s->char_is_unsigned)
1014         tcc_define_symbol(s, "__CHAR_UNSIGNED__", NULL);
1015
1016     if (s->cversion == 201112) {
1017         tcc_undefine_symbol(s, "__STDC_VERSION__");
1018         tcc_define_symbol(s, "__STDC_VERSION__", "201112L");
1019         tcc_define_symbol(s, "__STDC_NO_ATOMICS__", NULL);
1020         tcc_define_symbol(s, "__STDC_NO_COMPLEX__", NULL);
1021         tcc_define_symbol(s, "__STDC_NO_THREADS__", NULL);
1022 #ifndef TCC_TARGET_PE
1023         /* on Linux, this conflicts with a define introduced by
1024            /usr/include/stdc-predef.h included by glibc libs
1025         tcc_define_symbol(s, "__STDC_ISO_10646__", "201605L"); */
1026         tcc_define_symbol(s, "__STDC_UTF_16__", NULL);
1027         tcc_define_symbol(s, "__STDC_UTF_32__", NULL);
1028 #endif
1029     }
1030
1031     if (s->optimize > 0)
1032         tcc_define_symbol(s, "__OPTIMIZE__", NULL);
1033
1034     if (s->option_pthread)
1035         tcc_define_symbol(s, "_REENTRANT", NULL);
1036
1037     if (!s->nostdinc) {
1038         /* default include paths */
1039         /* -isystem paths have already been handled */
1040         tcc_add_sysinclude_path(s, CONFIG_TCC_SYSINCLUDEPATHS);
1041     }
1042
1043 #ifdef CONFIG_TCC_BCHECK
1044     if (s->do_bounds_check) {
1045         /* if bound checking, then add corresponding sections */
1046         tccelf_bounds_new(s);
1047         /* define symbol */
1048         tcc_define_symbol(s, "__BOUNDS_CHECKING_ON", NULL);
1049     }
1050 #endif
1051     if (s->do_debug) {
1052         /* add debug sections */
1053         tccelf_stab_new(s);
1054     }
1055
1056     tcc_add_library_path(s, CONFIG_TCC_LIBPATHS);
1057
1058 #ifdef TCC_TARGET_PE
1059 # ifdef _WIN32
1060     if (!s->nostdlib && output_type != TCC_OUTPUT_OBJ)
1061         tcc_add_systemdir(s);
1062 # endif
1063 #else
1064     /* paths for crt objects */
1065     tcc_split_path(s, &s->crt_paths, &s->nb_crt_paths, CONFIG_TCC_CRTPREFIX);
1066     /* add libc crt1/crti objects */
1067     if ((output_type == TCC_OUTPUT_EXE || output_type == TCC_OUTPUT_DLL) &&
1068         !s->nostdlib) {
1069 #ifndef TCC_TARGET_MACHO
1070         /* Mach-O with LC_MAIN doesn't need any crt startup code.  */
1071         if (output_type != TCC_OUTPUT_DLL)
1072             tcc_add_crt(s, "crt1.o");
1073         tcc_add_crt(s, "crti.o");
1074 #endif
1075     }
1076 #endif
1077     return 0;
1078 }
1079
1080 LIBTCCAPI int tcc_add_include_path(TCCState *s, const char *pathname)
1081 {
1082     tcc_split_path(s, &s->include_paths, &s->nb_include_paths, pathname);
1083     return 0;
1084 }
1085
1086 LIBTCCAPI int tcc_add_sysinclude_path(TCCState *s, const char *pathname)
1087 {
1088     tcc_split_path(s, &s->sysinclude_paths, &s->nb_sysinclude_paths, pathname);
1089     return 0;
1090 }
1091
1092 ST_FUNC int tcc_add_file_internal(TCCState *s1, const char *filename, int flags)
1093 {
1094     int fd, ret;
1095
1096     /* open the file */
1097     fd = _tcc_open(s1, filename);
1098     if (fd < 0) {
1099         if (flags & AFF_PRINT_ERROR)
1100             tcc_error_noabort("file '%s' not found", filename);
1101         return -1;
1102     }
1103
1104     s1->current_filename = filename;
1105     if (flags & AFF_TYPE_BIN) {
1106         ElfW(Ehdr) ehdr;
1107         int obj_type;
1108
1109         obj_type = tcc_object_type(fd, &ehdr);
1110         lseek(fd, 0, SEEK_SET);
1111
1112 #ifdef TCC_TARGET_MACHO
1113         if (0 == obj_type && 0 == strcmp(tcc_fileextension(filename), ".dylib"))
1114             obj_type = AFF_BINTYPE_DYN;
1115 #endif
1116
1117         switch (obj_type) {
1118         case AFF_BINTYPE_REL:
1119             ret = tcc_load_object_file(s1, fd, 0);
1120             break;
1121 #ifndef TCC_TARGET_PE
1122         case AFF_BINTYPE_DYN:
1123             if (s1->output_type == TCC_OUTPUT_MEMORY) {
1124                 ret = 0;
1125 #ifdef TCC_IS_NATIVE
1126                 if (NULL == dlopen(filename, RTLD_GLOBAL | RTLD_LAZY))
1127                     ret = -1;
1128 #endif
1129             } else {
1130 #ifndef TCC_TARGET_MACHO
1131                 ret = tcc_load_dll(s1, fd, filename,
1132                                    (flags & AFF_REFERENCED_DLL) != 0);
1133 #else
1134                 ret = macho_load_dll(s1, fd, filename,
1135                                      (flags & AFF_REFERENCED_DLL) != 0);
1136 #endif
1137             }
1138             break;
1139 #endif
1140         case AFF_BINTYPE_AR:
1141             ret = tcc_load_archive(s1, fd, !(flags & AFF_WHOLE_ARCHIVE));
1142             break;
1143 #ifdef TCC_TARGET_COFF
1144         case AFF_BINTYPE_C67:
1145             ret = tcc_load_coff(s1, fd);
1146             break;
1147 #endif
1148         default:
1149 #ifdef TCC_TARGET_PE
1150             ret = pe_load_file(s1, filename, fd);
1151 #elif defined(TCC_TARGET_MACHO)
1152             ret = -1;
1153 #else
1154             /* as GNU ld, consider it is an ld script if not recognized */
1155             ret = tcc_load_ldscript(s1, fd);
1156 #endif
1157             if (ret < 0)
1158                 tcc_error_noabort("%s: unrecognized file type %d", filename,
1159                                   obj_type);
1160             break;
1161         }
1162         close(fd);
1163     } else {
1164         /* update target deps */
1165         dynarray_add(&s1->target_deps, &s1->nb_target_deps, tcc_strdup(filename));
1166         ret = tcc_compile(s1, flags, filename, fd);
1167     }
1168     s1->current_filename = NULL;
1169     return ret;
1170 }
1171
1172 LIBTCCAPI int tcc_add_file(TCCState *s, const char *filename)
1173 {
1174     int filetype = s->filetype;
1175     if (0 == (filetype & AFF_TYPE_MASK)) {
1176         /* use a file extension to detect a filetype */
1177         const char *ext = tcc_fileextension(filename);
1178         if (ext[0]) {
1179             ext++;
1180             if (!strcmp(ext, "S"))
1181                 filetype = AFF_TYPE_ASMPP;
1182             else if (!strcmp(ext, "s"))
1183                 filetype = AFF_TYPE_ASM;
1184             else if (!PATHCMP(ext, "c") || !PATHCMP(ext, "i"))
1185                 filetype = AFF_TYPE_C;
1186             else
1187                 filetype |= AFF_TYPE_BIN;
1188         } else {
1189             filetype = AFF_TYPE_C;
1190         }
1191     }
1192     return tcc_add_file_internal(s, filename, filetype | AFF_PRINT_ERROR);
1193 }
1194
1195 LIBTCCAPI int tcc_add_library_path(TCCState *s, const char *pathname)
1196 {
1197     tcc_split_path(s, &s->library_paths, &s->nb_library_paths, pathname);
1198     return 0;
1199 }
1200
1201 static int tcc_add_library_internal(TCCState *s, const char *fmt,
1202     const char *filename, int flags, char **paths, int nb_paths)
1203 {
1204     char buf[1024];
1205     int i;
1206
1207     for(i = 0; i < nb_paths; i++) {
1208         snprintf(buf, sizeof(buf), fmt, paths[i], filename);
1209         if (tcc_add_file_internal(s, buf, flags | AFF_TYPE_BIN) == 0)
1210             return 0;
1211     }
1212     return -1;
1213 }
1214
1215 /* find and load a dll. Return non zero if not found */
1216 /* XXX: add '-rpath' option support ? */
1217 ST_FUNC int tcc_add_dll(TCCState *s, const char *filename, int flags)
1218 {
1219     return tcc_add_library_internal(s, "%s/%s", filename, flags,
1220         s->library_paths, s->nb_library_paths);
1221 }
1222
1223 #ifndef TCC_TARGET_PE
1224 ST_FUNC int tcc_add_crt(TCCState *s1, const char *filename)
1225 {
1226     if (-1 == tcc_add_library_internal(s1, "%s/%s",
1227         filename, 0, s1->crt_paths, s1->nb_crt_paths))
1228         tcc_error_noabort("file '%s' not found", filename);
1229     return 0;
1230 }
1231 #endif
1232
1233 /* the library name is the same as the argument of the '-l' option */
1234 LIBTCCAPI int tcc_add_library(TCCState *s, const char *libraryname)
1235 {
1236 #if defined TCC_TARGET_PE
1237     const char *libs[] = { "%s/%s.def", "%s/lib%s.def", "%s/%s.dll", "%s/lib%s.dll", "%s/lib%s.a", NULL };
1238     const char **pp = s->static_link ? libs + 4 : libs;
1239 #elif defined TCC_TARGET_MACHO
1240     const char *libs[] = { "%s/lib%s.dylib", "%s/lib%s.a", NULL };
1241     const char **pp = s->static_link ? libs + 1 : libs;
1242 #else
1243     const char *libs[] = { "%s/lib%s.so", "%s/lib%s.a", NULL };
1244     const char **pp = s->static_link ? libs + 1 : libs;
1245 #endif
1246     int flags = s->filetype & AFF_WHOLE_ARCHIVE;
1247     while (*pp) {
1248         if (0 == tcc_add_library_internal(s, *pp,
1249             libraryname, flags, s->library_paths, s->nb_library_paths))
1250             return 0;
1251         ++pp;
1252     }
1253     return -1;
1254 }
1255
1256 PUB_FUNC int tcc_add_library_err(TCCState *s1, const char *libname)
1257 {
1258     int ret = tcc_add_library(s1, libname);
1259     if (ret < 0)
1260         tcc_error_noabort("library '%s' not found", libname);
1261     return ret;
1262 }
1263
1264 /* handle #pragma comment(lib,) */
1265 ST_FUNC void tcc_add_pragma_libs(TCCState *s1)
1266 {
1267     int i;
1268     for (i = 0; i < s1->nb_pragma_libs; i++)
1269         tcc_add_library_err(s1, s1->pragma_libs[i]);
1270 }
1271
1272 LIBTCCAPI int tcc_add_symbol(TCCState *s1, const char *name, const void *val)
1273 {
1274 #ifdef TCC_TARGET_PE
1275     /* On x86_64 'val' might not be reachable with a 32bit offset.
1276        So it is handled here as if it were in a DLL. */
1277     pe_putimport(s1, 0, name, (uintptr_t)val);
1278 #else
1279     set_elf_sym(symtab_section, (uintptr_t)val, 0,
1280         ELFW(ST_INFO)(STB_GLOBAL, STT_NOTYPE), 0,
1281         SHN_ABS, name);
1282 #endif
1283     return 0;
1284 }
1285
1286 LIBTCCAPI void tcc_set_lib_path(TCCState *s, const char *path)
1287 {
1288     tcc_free(s->tcc_lib_path);
1289     s->tcc_lib_path = tcc_strdup(path);
1290 }
1291
1292 #define WD_ALL    0x0001 /* warning is activated when using -Wall */
1293 #define FD_INVERT 0x0002 /* invert value before storing */
1294
1295 typedef struct FlagDef {
1296     uint16_t offset;
1297     uint16_t flags;
1298     const char *name;
1299 } FlagDef;
1300
1301 static int no_flag(const char **pp)
1302 {
1303     const char *p = *pp;
1304     if (*p != 'n' || *++p != 'o' || *++p != '-')
1305         return 0;
1306     *pp = p + 1;
1307     return 1;
1308 }
1309
1310 ST_FUNC int set_flag(TCCState *s, const FlagDef *flags, const char *name)
1311 {
1312     int value, ret;
1313     const FlagDef *p;
1314     const char *r;
1315
1316     value = 1;
1317     r = name;
1318     if (no_flag(&r))
1319         value = 0;
1320
1321     for (ret = -1, p = flags; p->name; ++p) {
1322         if (ret) {
1323             if (strcmp(r, p->name))
1324                 continue;
1325         } else {
1326             if (0 == (p->flags & WD_ALL))
1327                 continue;
1328         }
1329         if (p->offset) {
1330             *((unsigned char *)s + p->offset) =
1331                 p->flags & FD_INVERT ? !value : value;
1332             if (ret)
1333                 return 0;
1334         } else {
1335             ret = 0;
1336         }
1337     }
1338     return ret;
1339 }
1340
1341 static int strstart(const char *val, const char **str)
1342 {
1343     const char *p, *q;
1344     p = *str;
1345     q = val;
1346     while (*q) {
1347         if (*p != *q)
1348             return 0;
1349         p++;
1350         q++;
1351     }
1352     *str = p;
1353     return 1;
1354 }
1355
1356 /* Like strstart, but automatically takes into account that ld options can
1357  *
1358  * - start with double or single dash (e.g. '--soname' or '-soname')
1359  * - arguments can be given as separate or after '=' (e.g. '-Wl,-soname,x.so'
1360  *   or '-Wl,-soname=x.so')
1361  *
1362  * you provide `val` always in 'option[=]' form (no leading -)
1363  */
1364 static int link_option(const char *str, const char *val, const char **ptr)
1365 {
1366     const char *p, *q;
1367     int ret;
1368
1369     /* there should be 1 or 2 dashes */
1370     if (*str++ != '-')
1371         return 0;
1372     if (*str == '-')
1373         str++;
1374
1375     /* then str & val should match (potentially up to '=') */
1376     p = str;
1377     q = val;
1378
1379     ret = 1;
1380     if (q[0] == '?') {
1381         ++q;
1382         if (no_flag(&p))
1383             ret = -1;
1384     }
1385
1386     while (*q != '\0' && *q != '=') {
1387         if (*p != *q)
1388             return 0;
1389         p++;
1390         q++;
1391     }
1392
1393     /* '=' near eos means ',' or '=' is ok */
1394     if (*q == '=') {
1395         if (*p == 0)
1396             *ptr = p;
1397         if (*p != ',' && *p != '=')
1398             return 0;
1399         p++;
1400     } else if (*p) {
1401         return 0;
1402     }
1403     *ptr = p;
1404     return ret;
1405 }
1406
1407 static const char *skip_linker_arg(const char **str)
1408 {
1409     const char *s1 = *str;
1410     const char *s2 = strchr(s1, ',');
1411     *str = s2 ? s2++ : (s2 = s1 + strlen(s1));
1412     return s2;
1413 }
1414
1415 static void copy_linker_arg(char **pp, const char *s, int sep)
1416 {
1417     const char *q = s;
1418     char *p = *pp;
1419     int l = 0;
1420     if (p && sep)
1421         p[l = strlen(p)] = sep, ++l;
1422     skip_linker_arg(&q);
1423     pstrncpy(l + (*pp = tcc_realloc(p, q - s + l + 1)), s, q - s);
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, "fini=", &p)) {
1442             copy_linker_arg(&s->fini_symbol, p, 0);
1443             ignoring = 1;
1444         } else if (link_option(option, "image-base=", &p)
1445                 || link_option(option, "Ttext=", &p)) {
1446             s->text_addr = strtoull(p, &end, 16);
1447             s->has_text_addr = 1;
1448         } else if (link_option(option, "init=", &p)) {
1449             copy_linker_arg(&s->init_symbol, p, 0);
1450             ignoring = 1;
1451         } else if (link_option(option, "oformat=", &p)) {
1452 #if defined(TCC_TARGET_PE)
1453             if (strstart("pe-", &p)) {
1454 #elif PTR_SIZE == 8
1455             if (strstart("elf64-", &p)) {
1456 #else
1457             if (strstart("elf32-", &p)) {
1458 #endif
1459                 s->output_format = TCC_OUTPUT_FORMAT_ELF;
1460             } else if (!strcmp(p, "binary")) {
1461                 s->output_format = TCC_OUTPUT_FORMAT_BINARY;
1462 #ifdef TCC_TARGET_COFF
1463             } else if (!strcmp(p, "coff")) {
1464                 s->output_format = TCC_OUTPUT_FORMAT_COFF;
1465 #endif
1466             } else
1467                 goto err;
1468
1469         } else if (link_option(option, "as-needed", &p)) {
1470             ignoring = 1;
1471         } else if (link_option(option, "O", &p)) {
1472             ignoring = 1;
1473         } else if (link_option(option, "export-all-symbols", &p)) {
1474             s->rdynamic = 1;
1475         } else if (link_option(option, "export-dynamic", &p)) {
1476             s->rdynamic = 1;
1477         } else if (link_option(option, "rpath=", &p)) {
1478             copy_linker_arg(&s->rpath, p, ':');
1479         } else if (link_option(option, "enable-new-dtags", &p)) {
1480             s->enable_new_dtags = 1;
1481         } else if (link_option(option, "section-alignment=", &p)) {
1482             s->section_align = strtoul(p, &end, 16);
1483         } else if (link_option(option, "soname=", &p)) {
1484             copy_linker_arg(&s->soname, p, 0);
1485 #ifdef TCC_TARGET_PE
1486         } else if (link_option(option, "large-address-aware", &p)) {
1487             s->pe_characteristics |= 0x20;
1488         } else if (link_option(option, "file-alignment=", &p)) {
1489             s->pe_file_align = strtoul(p, &end, 16);
1490         } else if (link_option(option, "stack=", &p)) {
1491             s->pe_stack_size = strtoul(p, &end, 10);
1492         } else if (link_option(option, "subsystem=", &p)) {
1493 #if defined(TCC_TARGET_I386) || defined(TCC_TARGET_X86_64)
1494             if (!strcmp(p, "native")) {
1495                 s->pe_subsystem = 1;
1496             } else if (!strcmp(p, "console")) {
1497                 s->pe_subsystem = 3;
1498             } else if (!strcmp(p, "gui") || !strcmp(p, "windows")) {
1499                 s->pe_subsystem = 2;
1500             } else if (!strcmp(p, "posix")) {
1501                 s->pe_subsystem = 7;
1502             } else if (!strcmp(p, "efiapp")) {
1503                 s->pe_subsystem = 10;
1504             } else if (!strcmp(p, "efiboot")) {
1505                 s->pe_subsystem = 11;
1506             } else if (!strcmp(p, "efiruntime")) {
1507                 s->pe_subsystem = 12;
1508             } else if (!strcmp(p, "efirom")) {
1509                 s->pe_subsystem = 13;
1510 #elif defined(TCC_TARGET_ARM)
1511             if (!strcmp(p, "wince")) {
1512                 s->pe_subsystem = 9;
1513 #endif
1514             } else
1515                 goto err;
1516 #endif
1517         } else if (ret = link_option(option, "?whole-archive", &p), ret) {
1518             if (ret > 0)
1519                 s->filetype |= AFF_WHOLE_ARCHIVE;
1520             else
1521                 s->filetype &= ~AFF_WHOLE_ARCHIVE;
1522         } else if (p) {
1523             return 0;
1524         } else {
1525     err:
1526             tcc_error("unsupported linker option '%s'", option);
1527         }
1528
1529         if (ignoring && s->warn_unsupported)
1530             tcc_warning("unsupported linker option '%s'", option);
1531
1532         option = skip_linker_arg(&p);
1533     }
1534     return 1;
1535 }
1536
1537 typedef struct TCCOption {
1538     const char *name;
1539     uint16_t index;
1540     uint16_t flags;
1541 } TCCOption;
1542
1543 enum {
1544     TCC_OPTION_HELP,
1545     TCC_OPTION_HELP2,
1546     TCC_OPTION_v,
1547     TCC_OPTION_I,
1548     TCC_OPTION_D,
1549     TCC_OPTION_U,
1550     TCC_OPTION_P,
1551     TCC_OPTION_L,
1552     TCC_OPTION_B,
1553     TCC_OPTION_l,
1554     TCC_OPTION_bench,
1555     TCC_OPTION_bt,
1556     TCC_OPTION_b,
1557     TCC_OPTION_ba,
1558     TCC_OPTION_g,
1559     TCC_OPTION_c,
1560     TCC_OPTION_dumpversion,
1561     TCC_OPTION_d,
1562     TCC_OPTION_static,
1563     TCC_OPTION_std,
1564     TCC_OPTION_shared,
1565     TCC_OPTION_soname,
1566     TCC_OPTION_o,
1567     TCC_OPTION_r,
1568     TCC_OPTION_s,
1569     TCC_OPTION_traditional,
1570     TCC_OPTION_Wl,
1571     TCC_OPTION_Wp,
1572     TCC_OPTION_W,
1573     TCC_OPTION_O,
1574     TCC_OPTION_mfloat_abi,
1575     TCC_OPTION_m,
1576     TCC_OPTION_f,
1577     TCC_OPTION_isystem,
1578     TCC_OPTION_iwithprefix,
1579     TCC_OPTION_include,
1580     TCC_OPTION_nostdinc,
1581     TCC_OPTION_nostdlib,
1582     TCC_OPTION_print_search_dirs,
1583     TCC_OPTION_rdynamic,
1584     TCC_OPTION_param,
1585     TCC_OPTION_pedantic,
1586     TCC_OPTION_pthread,
1587     TCC_OPTION_run,
1588     TCC_OPTION_w,
1589     TCC_OPTION_pipe,
1590     TCC_OPTION_E,
1591     TCC_OPTION_MD,
1592     TCC_OPTION_MF,
1593     TCC_OPTION_x,
1594     TCC_OPTION_ar,
1595     TCC_OPTION_impdef
1596 };
1597
1598 #define TCC_OPTION_HAS_ARG 0x0001
1599 #define TCC_OPTION_NOSEP   0x0002 /* cannot have space before option and arg */
1600
1601 static const TCCOption tcc_options[] = {
1602     { "h", TCC_OPTION_HELP, 0 },
1603     { "-help", TCC_OPTION_HELP, 0 },
1604     { "?", TCC_OPTION_HELP, 0 },
1605     { "hh", TCC_OPTION_HELP2, 0 },
1606     { "v", TCC_OPTION_v, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1607     { "-version", TCC_OPTION_v, 0 }, /* handle as verbose, also prints version*/
1608     { "I", TCC_OPTION_I, TCC_OPTION_HAS_ARG },
1609     { "D", TCC_OPTION_D, TCC_OPTION_HAS_ARG },
1610     { "U", TCC_OPTION_U, TCC_OPTION_HAS_ARG },
1611     { "P", TCC_OPTION_P, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1612     { "L", TCC_OPTION_L, TCC_OPTION_HAS_ARG },
1613     { "B", TCC_OPTION_B, TCC_OPTION_HAS_ARG },
1614     { "l", TCC_OPTION_l, TCC_OPTION_HAS_ARG },
1615     { "bench", TCC_OPTION_bench, 0 },
1616 #ifdef CONFIG_TCC_BACKTRACE
1617     { "bt", TCC_OPTION_bt, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1618 #endif
1619 #ifdef CONFIG_TCC_BCHECK
1620     { "b", TCC_OPTION_b, 0 },
1621 #endif
1622     { "g", TCC_OPTION_g, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1623     { "c", TCC_OPTION_c, 0 },
1624     { "dumpversion", TCC_OPTION_dumpversion, 0},
1625     { "d", TCC_OPTION_d, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1626     { "static", TCC_OPTION_static, 0 },
1627     { "std", TCC_OPTION_std, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1628     { "shared", TCC_OPTION_shared, 0 },
1629     { "soname", TCC_OPTION_soname, TCC_OPTION_HAS_ARG },
1630     { "o", TCC_OPTION_o, TCC_OPTION_HAS_ARG },
1631     { "-param", TCC_OPTION_param, TCC_OPTION_HAS_ARG },
1632     { "pedantic", TCC_OPTION_pedantic, 0},
1633     { "pthread", TCC_OPTION_pthread, 0},
1634     { "run", TCC_OPTION_run, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1635     { "rdynamic", TCC_OPTION_rdynamic, 0 },
1636     { "r", TCC_OPTION_r, 0 },
1637     { "s", TCC_OPTION_s, 0 },
1638     { "traditional", TCC_OPTION_traditional, 0 },
1639     { "Wl,", TCC_OPTION_Wl, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1640     { "Wp,", TCC_OPTION_Wp, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1641     { "W", TCC_OPTION_W, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1642     { "O", TCC_OPTION_O, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1643 #ifdef TCC_TARGET_ARM
1644     { "mfloat-abi", TCC_OPTION_mfloat_abi, TCC_OPTION_HAS_ARG },
1645 #endif
1646     { "m", TCC_OPTION_m, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1647     { "f", TCC_OPTION_f, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1648     { "isystem", TCC_OPTION_isystem, TCC_OPTION_HAS_ARG },
1649     { "include", TCC_OPTION_include, TCC_OPTION_HAS_ARG },
1650     { "nostdinc", TCC_OPTION_nostdinc, 0 },
1651     { "nostdlib", TCC_OPTION_nostdlib, 0 },
1652     { "print-search-dirs", TCC_OPTION_print_search_dirs, 0 },
1653     { "w", TCC_OPTION_w, 0 },
1654     { "pipe", TCC_OPTION_pipe, 0},
1655     { "E", TCC_OPTION_E, 0},
1656     { "MD", TCC_OPTION_MD, 0},
1657     { "MF", TCC_OPTION_MF, TCC_OPTION_HAS_ARG },
1658     { "x", TCC_OPTION_x, TCC_OPTION_HAS_ARG },
1659     { "ar", TCC_OPTION_ar, 0},
1660 #ifdef TCC_TARGET_PE
1661     { "impdef", TCC_OPTION_impdef, 0},
1662 #endif
1663     { NULL, 0, 0 },
1664 };
1665
1666 static const FlagDef options_W[] = {
1667     { 0, 0, "all" },
1668     { offsetof(TCCState, warn_unsupported), 0, "unsupported" },
1669     { offsetof(TCCState, warn_write_strings), 0, "write-strings" },
1670     { offsetof(TCCState, warn_error), 0, "error" },
1671     { offsetof(TCCState, warn_gcc_compat), 0, "gcc-compat" },
1672     { offsetof(TCCState, warn_implicit_function_declaration), WD_ALL,
1673       "implicit-function-declaration" },
1674     { 0, 0, NULL }
1675 };
1676
1677 static const FlagDef options_f[] = {
1678     { offsetof(TCCState, char_is_unsigned), 0, "unsigned-char" },
1679     { offsetof(TCCState, char_is_unsigned), FD_INVERT, "signed-char" },
1680     { offsetof(TCCState, nocommon), FD_INVERT, "common" },
1681     { offsetof(TCCState, leading_underscore), 0, "leading-underscore" },
1682     { offsetof(TCCState, ms_extensions), 0, "ms-extensions" },
1683     { offsetof(TCCState, dollars_in_identifiers), 0, "dollars-in-identifiers" },
1684     { 0, 0, NULL }
1685 };
1686
1687 static const FlagDef options_m[] = {
1688     { offsetof(TCCState, ms_bitfields), 0, "ms-bitfields" },
1689 #ifdef TCC_TARGET_X86_64
1690     { offsetof(TCCState, nosse), FD_INVERT, "sse" },
1691 #endif
1692     { 0, 0, NULL }
1693 };
1694
1695 static void parse_option_D(TCCState *s1, const char *optarg)
1696 {
1697     char *sym = tcc_strdup(optarg);
1698     char *value = strchr(sym, '=');
1699     if (value)
1700         *value++ = '\0';
1701     tcc_define_symbol(s1, sym, value);
1702     tcc_free(sym);
1703 }
1704
1705 static void args_parser_add_file(TCCState *s, const char* filename, int filetype)
1706 {
1707     struct filespec *f = tcc_malloc(sizeof *f + strlen(filename));
1708     f->type = filetype;
1709     strcpy(f->name, filename);
1710     dynarray_add(&s->files, &s->nb_files, f);
1711 }
1712
1713 static int args_parser_make_argv(const char *r, int *argc, char ***argv)
1714 {
1715     int ret = 0, q, c;
1716     CString str;
1717     for(;;) {
1718         while (c = (unsigned char)*r, c && c <= ' ')
1719           ++r;
1720         if (c == 0)
1721             break;
1722         q = 0;
1723         cstr_new(&str);
1724         while (c = (unsigned char)*r, c) {
1725             ++r;
1726             if (c == '\\' && (*r == '"' || *r == '\\')) {
1727                 c = *r++;
1728             } else if (c == '"') {
1729                 q = !q;
1730                 continue;
1731             } else if (q == 0 && c <= ' ') {
1732                 break;
1733             }
1734             cstr_ccat(&str, c);
1735         }
1736         cstr_ccat(&str, 0);
1737         //printf("<%s>\n", str.data), fflush(stdout);
1738         dynarray_add(argv, argc, tcc_strdup(str.data));
1739         cstr_free(&str);
1740         ++ret;
1741     }
1742     return ret;
1743 }
1744
1745 /* read list file */
1746 static void args_parser_listfile(TCCState *s,
1747     const char *filename, int optind, int *pargc, char ***pargv)
1748 {
1749     TCCState *s1 = s;
1750     int fd, i;
1751     size_t len;
1752     char *p;
1753     int argc = 0;
1754     char **argv = NULL;
1755
1756     fd = open(filename, O_RDONLY | O_BINARY);
1757     if (fd < 0)
1758         tcc_error("listfile '%s' not found", filename);
1759
1760     len = lseek(fd, 0, SEEK_END);
1761     p = tcc_malloc(len + 1), p[len] = 0;
1762     lseek(fd, 0, SEEK_SET), read(fd, p, len), close(fd);
1763
1764     for (i = 0; i < *pargc; ++i)
1765         if (i == optind)
1766             args_parser_make_argv(p, &argc, &argv);
1767         else
1768             dynarray_add(&argv, &argc, tcc_strdup((*pargv)[i]));
1769
1770     tcc_free(p);
1771     dynarray_reset(&s->argv, &s->argc);
1772     *pargc = s->argc = argc, *pargv = s->argv = argv;
1773 }
1774
1775 PUB_FUNC int tcc_parse_args(TCCState *s, int *pargc, char ***pargv, int optind)
1776 {
1777     TCCState *s1 = s;
1778     const TCCOption *popt;
1779     const char *optarg, *r;
1780     const char *run = NULL;
1781     int x;
1782     CString linker_arg; /* collect -Wl options */
1783     int tool = 0, arg_start = 0, noaction = optind;
1784     char **argv = *pargv;
1785     int argc = *pargc;
1786
1787     cstr_new(&linker_arg);
1788
1789     while (optind < argc) {
1790         r = argv[optind];
1791         if (r[0] == '@' && r[1] != '\0') {
1792             args_parser_listfile(s, r + 1, optind, &argc, &argv);
1793             continue;
1794         }
1795         optind++;
1796         if (tool) {
1797             if (r[0] == '-' && r[1] == 'v' && r[2] == 0)
1798                 ++s->verbose;
1799             continue;
1800         }
1801 reparse:
1802         if (r[0] != '-' || r[1] == '\0') {
1803             if (r[0] != '@') /* allow "tcc file(s) -run @ args ..." */
1804                 args_parser_add_file(s, r, s->filetype);
1805             if (run) {
1806                 tcc_set_options(s, run);
1807                 arg_start = optind - 1;
1808                 break;
1809             }
1810             continue;
1811         }
1812
1813         /* find option in table */
1814         for(popt = tcc_options; ; ++popt) {
1815             const char *p1 = popt->name;
1816             const char *r1 = r + 1;
1817             if (p1 == NULL)
1818                 tcc_error("invalid option -- '%s'", r);
1819             if (!strstart(p1, &r1))
1820                 continue;
1821             optarg = r1;
1822             if (popt->flags & TCC_OPTION_HAS_ARG) {
1823                 if (*r1 == '\0' && !(popt->flags & TCC_OPTION_NOSEP)) {
1824                     if (optind >= argc)
1825                 arg_err:
1826                         tcc_error("argument to '%s' is missing", r);
1827                     optarg = argv[optind++];
1828                 }
1829             } else if (*r1 != '\0')
1830                 continue;
1831             break;
1832         }
1833
1834         switch(popt->index) {
1835         case TCC_OPTION_HELP:
1836             x = OPT_HELP;
1837             goto extra_action;
1838         case TCC_OPTION_HELP2:
1839             x = OPT_HELP2;
1840             goto extra_action;
1841         case TCC_OPTION_I:
1842             tcc_add_include_path(s, optarg);
1843             break;
1844         case TCC_OPTION_D:
1845             parse_option_D(s, optarg);
1846             break;
1847         case TCC_OPTION_U:
1848             tcc_undefine_symbol(s, optarg);
1849             break;
1850         case TCC_OPTION_L:
1851             tcc_add_library_path(s, optarg);
1852             break;
1853         case TCC_OPTION_B:
1854             /* set tcc utilities path (mainly for tcc development) */
1855             tcc_set_lib_path(s, optarg);
1856             break;
1857         case TCC_OPTION_l:
1858             args_parser_add_file(s, optarg, AFF_TYPE_LIB | (s->filetype & ~AFF_TYPE_MASK));
1859             s->nb_libraries++;
1860             break;
1861         case TCC_OPTION_pthread:
1862             s->option_pthread = 1;
1863             break;
1864         case TCC_OPTION_bench:
1865             s->do_bench = 1;
1866             break;
1867 #ifdef CONFIG_TCC_BACKTRACE
1868         case TCC_OPTION_bt:
1869             s->rt_num_callers = atoi(optarg);
1870             s->do_backtrace = 1;
1871             s->do_debug = 1;
1872             break;
1873 #endif
1874 #ifdef CONFIG_TCC_BCHECK
1875         case TCC_OPTION_b:
1876             s->do_bounds_check = 1;
1877             s->do_backtrace = 1;
1878             s->do_debug = 1;
1879             break;
1880 #endif
1881         case TCC_OPTION_g:
1882             s->do_debug = 1;
1883             break;
1884         case TCC_OPTION_c:
1885             x = TCC_OUTPUT_OBJ;
1886         set_output_type:
1887             if (s->output_type)
1888                 tcc_warning("-%s: overriding compiler action already specified", popt->name);
1889             s->output_type = x;
1890             break;
1891         case TCC_OPTION_d:
1892             if (*optarg == 'D')
1893                 s->dflag = 3;
1894             else if (*optarg == 'M')
1895                 s->dflag = 7;
1896             else if (*optarg == 't')
1897                 s->dflag = 16;
1898             else if (isnum(*optarg))
1899                 s->g_debug |= atoi(optarg);
1900             else
1901                 goto unsupported_option;
1902             break;
1903         case TCC_OPTION_static:
1904             s->static_link = 1;
1905             break;
1906         case TCC_OPTION_std:
1907             if (strcmp(optarg, "=c11") == 0)
1908                 s->cversion = 201112;
1909             break;
1910         case TCC_OPTION_shared:
1911             x = TCC_OUTPUT_DLL;
1912             goto set_output_type;
1913         case TCC_OPTION_soname:
1914             s->soname = tcc_strdup(optarg);
1915             break;
1916         case TCC_OPTION_o:
1917             if (s->outfile) {
1918                 tcc_warning("multiple -o option");
1919                 tcc_free(s->outfile);
1920             }
1921             s->outfile = tcc_strdup(optarg);
1922             break;
1923         case TCC_OPTION_r:
1924             /* generate a .o merging several output files */
1925             s->option_r = 1;
1926             x = TCC_OUTPUT_OBJ;
1927             goto set_output_type;
1928         case TCC_OPTION_isystem:
1929             tcc_add_sysinclude_path(s, optarg);
1930             break;
1931         case TCC_OPTION_include:
1932             cstr_printf(&s->cmdline_incl, "#include \"%s\"\n", optarg);
1933             break;
1934         case TCC_OPTION_nostdinc:
1935             s->nostdinc = 1;
1936             break;
1937         case TCC_OPTION_nostdlib:
1938             s->nostdlib = 1;
1939             break;
1940         case TCC_OPTION_run:
1941 #ifndef TCC_IS_NATIVE
1942             tcc_error("-run is not available in a cross compiler");
1943 #endif
1944             run = optarg;
1945             x = TCC_OUTPUT_MEMORY;
1946             goto set_output_type;
1947         case TCC_OPTION_v:
1948             do ++s->verbose; while (*optarg++ == 'v');
1949             ++noaction;
1950             break;
1951         case TCC_OPTION_f:
1952             if (set_flag(s, options_f, optarg) < 0)
1953                 goto unsupported_option;
1954             break;
1955 #ifdef TCC_TARGET_ARM
1956         case TCC_OPTION_mfloat_abi:
1957             /* tcc doesn't support soft float yet */
1958             if (!strcmp(optarg, "softfp")) {
1959                 s->float_abi = ARM_SOFTFP_FLOAT;
1960                 tcc_undefine_symbol(s, "__ARM_PCS_VFP");
1961             } else if (!strcmp(optarg, "hard"))
1962                 s->float_abi = ARM_HARD_FLOAT;
1963             else
1964                 tcc_error("unsupported float abi '%s'", optarg);
1965             break;
1966 #endif
1967         case TCC_OPTION_m:
1968             if (set_flag(s, options_m, optarg) < 0) {
1969                 if (x = atoi(optarg), x != 32 && x != 64)
1970                     goto unsupported_option;
1971                 if (PTR_SIZE != x/8)
1972                     return x;
1973                 ++noaction;
1974             }
1975             break;
1976         case TCC_OPTION_W:
1977             s->warn_none = 0;
1978             if (optarg[0] && set_flag(s, options_W, optarg) < 0)
1979                 goto unsupported_option;
1980             break;
1981         case TCC_OPTION_w:
1982             s->warn_none = 1;
1983             break;
1984         case TCC_OPTION_rdynamic:
1985             s->rdynamic = 1;
1986             break;
1987         case TCC_OPTION_Wl:
1988             if (linker_arg.size)
1989                 --linker_arg.size, cstr_ccat(&linker_arg, ',');
1990             cstr_cat(&linker_arg, optarg, 0);
1991             if (tcc_set_linker(s, linker_arg.data))
1992                 cstr_free(&linker_arg);
1993             break;
1994         case TCC_OPTION_Wp:
1995             r = optarg;
1996             goto reparse;
1997         case TCC_OPTION_E:
1998             x = TCC_OUTPUT_PREPROCESS;
1999             goto set_output_type;
2000         case TCC_OPTION_P:
2001             s->Pflag = atoi(optarg) + 1;
2002             break;
2003         case TCC_OPTION_MD:
2004             s->gen_deps = 1;
2005             break;
2006         case TCC_OPTION_MF:
2007             s->deps_outfile = tcc_strdup(optarg);
2008             break;
2009         case TCC_OPTION_dumpversion:
2010             printf ("%s\n", TCC_VERSION);
2011             exit(0);
2012             break;
2013         case TCC_OPTION_x:
2014             x = 0;
2015             if (*optarg == 'c')
2016                 x = AFF_TYPE_C;
2017             else if (*optarg == 'a')
2018                 x = AFF_TYPE_ASMPP;
2019             else if (*optarg == 'b')
2020                 x = AFF_TYPE_BIN;
2021             else if (*optarg == 'n')
2022                 x = AFF_TYPE_NONE;
2023             else
2024                 tcc_warning("unsupported language '%s'", optarg);
2025             s->filetype = x | (s->filetype & ~AFF_TYPE_MASK);
2026             break;
2027         case TCC_OPTION_O:
2028             s->optimize = atoi(optarg);
2029             break;
2030         case TCC_OPTION_print_search_dirs:
2031             x = OPT_PRINT_DIRS;
2032             goto extra_action;
2033         case TCC_OPTION_impdef:
2034             x = OPT_IMPDEF;
2035             goto extra_action;
2036         case TCC_OPTION_ar:
2037             x = OPT_AR;
2038         extra_action:
2039             arg_start = optind - 1;
2040             if (arg_start != noaction)
2041                 tcc_error("cannot parse %s here", r);
2042             tool = x;
2043             break;
2044         case TCC_OPTION_traditional:
2045         case TCC_OPTION_pedantic:
2046         case TCC_OPTION_pipe:
2047         case TCC_OPTION_s:
2048             /* ignored */
2049             break;
2050         default:
2051 unsupported_option:
2052             if (s->warn_unsupported)
2053                 tcc_warning("unsupported option '%s'", r);
2054             break;
2055         }
2056     }
2057     if (linker_arg.size) {
2058         r = linker_arg.data;
2059         goto arg_err;
2060     }
2061     *pargc = argc - arg_start;
2062     *pargv = argv + arg_start;
2063     if (tool)
2064         return tool;
2065     if (optind != noaction)
2066         return 0;
2067     if (s->verbose == 2)
2068         return OPT_PRINT_DIRS;
2069     if (s->verbose)
2070         return OPT_V;
2071     return OPT_HELP;
2072 }
2073
2074 LIBTCCAPI void tcc_set_options(TCCState *s, const char *r)
2075 {
2076     char **argv = NULL;
2077     int argc = 0;
2078     args_parser_make_argv(r, &argc, &argv);
2079     tcc_parse_args(s, &argc, &argv, 0);
2080     dynarray_reset(&argv, &argc);
2081 }
2082
2083 PUB_FUNC void tcc_print_stats(TCCState *s1, unsigned total_time)
2084 {
2085     if (total_time < 1)
2086         total_time = 1;
2087     if (total_bytes < 1)
2088         total_bytes = 1;
2089     fprintf(stderr, "* %d idents, %d lines, %d bytes\n"
2090                     "* %0.3f s, %u lines/s, %0.1f MB/s\n",
2091            total_idents, total_lines, total_bytes,
2092            (double)total_time/1000,
2093            (unsigned)total_lines*1000/total_time,
2094            (double)total_bytes/1000/total_time);
2095 #ifdef MEM_DEBUG
2096     fprintf(stderr, "* %d bytes memory used\n", mem_max_size);
2097 #endif
2098 }