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 #include "tcc.h"
  22
  23 /********************************************************/
  24 /* global variables */
  25
  26 /* use GNU C extensions */
  27 ST_DATA int gnu_ext = 1;
  28
  29 /* use TinyCC extensions */
  30 ST_DATA int tcc_ext = 1;
  31
  32 /* XXX: get rid of this ASAP */
  33 ST_DATA struct TCCState *tcc_state;
  34
  35 static int nb_states;
  36
  37 /********************************************************/
  38
  39 #if ONE_SOURCE
  40 #include "tccpp.c"
  41 #include "tccgen.c"
  42 #include "tccelf.c"
  43 #include "tccrun.c"
  44 #ifdef TCC_TARGET_I386
  45 #include "i386-gen.c"
  46 #include "i386-link.c"
  47 #include "i386-asm.c"
  48 #endif
  49 #ifdef TCC_TARGET_ARM
  50 #include "arm-gen.c"
  51 #include "arm-link.c"
  52 #include "arm-asm.c"
  53 #endif
  54 #ifdef TCC_TARGET_ARM64
  55 #include "arm64-gen.c"
  56 #include "arm64-link.c"
  57 #endif
  58 #ifdef TCC_TARGET_C67
  59 #include "c67-gen.c"
  60 #include "c67-link.c"
  61 #include "tcccoff.c"
  62 #endif
  63 #ifdef TCC_TARGET_X86_64
  64 #include "x86_64-gen.c"
  65 #include "x86_64-link.c"
  66 #include "i386-asm.c"
  67 #endif
  68 #ifdef CONFIG_TCC_ASM
  69 #include "tccasm.c"
  70 #endif
  71 #ifdef TCC_TARGET_PE
  72 #include "tccpe.c"
  73 #endif
  74 #endif /* ONE_SOURCE */
  75
  76 /********************************************************/
  77 #ifndef CONFIG_TCC_ASM
  78 ST_FUNC void asm_instr(void)
  79 {
  80     tcc_error("inline asm() not supported");
  81 }
  82 ST_FUNC void asm_global_instr(void)
  83 {
  84     tcc_error("inline asm() not supported");
  85 }
  86 #endif
  87
  88 /********************************************************/
  89 #ifdef _WIN32
  90 ST_FUNC char *normalize_slashes(char *path)
  91 {
  92     char *p;
  93     for (p = path; *p; ++p)
  94         if (*p == '\\')
  95             *p = '/';
  96     return path;
  97 }
  98
  99 static HMODULE tcc_module;
 100
 101 /* on win32, we suppose the lib and includes are at the location of 'tcc.exe' */
 102 static void tcc_set_lib_path_w32(TCCState *s)
 103 {
 104     char path[1024], *p;
 105     GetModuleFileNameA(tcc_module, path, sizeof path);
 106     p = tcc_basename(normalize_slashes(strlwr(path)));
 107     if (p - 5 > path && 0 == strncmp(p - 5, "/bin/", 5))
 108         p -= 5;
 109     else if (p > path)
 110         p--;
 111     *p = 0;
 112     tcc_set_lib_path(s, path);
 113 }
 114
 115 #ifdef TCC_TARGET_PE
 116 static void tcc_add_systemdir(TCCState *s)
 117 {
 118     char buf[1000];
 119     GetSystemDirectory(buf, sizeof buf);
 120     tcc_add_library_path(s, normalize_slashes(buf));
 121 }
 122 #endif
 123
 124 #ifdef LIBTCC_AS_DLL
 125 BOOL WINAPI DllMain (HINSTANCE hDll, DWORD dwReason, LPVOID lpReserved)
 126 {
 127     if (DLL_PROCESS_ATTACH == dwReason)
 128         tcc_module = hDll;
 129     return TRUE;
 130 }
 131 #endif
 132 #endif
 133
 134 /********************************************************/
 135 /* copy a string and truncate it. */
 136 ST_FUNC char *pstrcpy(char *buf, int buf_size, const char *s)
 137 {
 138     char *q, *q_end;
 139     int c;
 140
 141     if (buf_size > 0) {
 142         q = buf;
 143         q_end = buf + buf_size - 1;
 144         while (q < q_end) {
 145             c = *s++;
 146             if (c == '\0')
 147                 break;
 148             *q++ = c;
 149         }
 150         *q = '\0';
 151     }
 152     return buf;
 153 }
 154
 155 /* strcat and truncate. */
 156 ST_FUNC char *pstrcat(char *buf, int buf_size, const char *s)
 157 {
 158     int len;
 159     len = strlen(buf);
 160     if (len < buf_size)
 161         pstrcpy(buf + len, buf_size - len, s);
 162     return buf;
 163 }
 164
 165 ST_FUNC char *pstrncpy(char *out, const char *in, size_t num)
 166 {
 167     memcpy(out, in, num);
 168     out[num] = '\0';
 169     return out;
 170 }
 171
 172 /* extract the basename of a file */
 173 PUB_FUNC char *tcc_basename(const char *name)
 174 {
 175     char *p = strchr(name, 0);
 176     while (p > name && !IS_DIRSEP(p[-1]))
 177         --p;
 178     return p;
 179 }
 180
 181 /* extract extension part of a file
 182  *
 183  * (if no extension, return pointer to end-of-string)
 184  */
 185 PUB_FUNC char *tcc_fileextension (const char *name)
 186 {
 187     char *b = tcc_basename(name);
 188     char *e = strrchr(b, '.');
 189     return e ? e : strchr(b, 0);
 190 }
 191
 192 /********************************************************/
 193 /* memory management */
 194
 195 #undef free
 196 #undef malloc
 197 #undef realloc
 198
 199 #ifndef MEM_DEBUG
 200
 201 PUB_FUNC void tcc_free(void *ptr)
 202 {
 203     free(ptr);
 204 }
 205
 206 PUB_FUNC void *tcc_malloc(unsigned long size)
 207 {
 208     void *ptr;
 209     ptr = malloc(size);
 210     if (!ptr && size)
 211         tcc_error("memory full (malloc)");
 212     return ptr;
 213 }
 214
 215 PUB_FUNC void *tcc_mallocz(unsigned long size)
 216 {
 217     void *ptr;
 218     ptr = tcc_malloc(size);
 219     memset(ptr, 0, size);
 220     return ptr;
 221 }
 222
 223 PUB_FUNC void *tcc_realloc(void *ptr, unsigned long size)
 224 {
 225     void *ptr1;
 226     ptr1 = realloc(ptr, size);
 227     if (!ptr1 && size)
 228         tcc_error("memory full (realloc)");
 229     return ptr1;
 230 }
 231
 232 PUB_FUNC char *tcc_strdup(const char *str)
 233 {
 234     char *ptr;
 235     ptr = tcc_malloc(strlen(str) + 1);
 236     strcpy(ptr, str);
 237     return ptr;
 238 }
 239
 240 PUB_FUNC void tcc_memcheck(void)
 241 {
 242 }
 243
 244 #else
 245
 246 #define MEM_DEBUG_MAGIC1 0xFEEDDEB1
 247 #define MEM_DEBUG_MAGIC2 0xFEEDDEB2
 248 #define MEM_DEBUG_MAGIC3 0xFEEDDEB3
 249 #define MEM_DEBUG_FILE_LEN 40
 250 #define MEM_DEBUG_CHECK3(header) \
 251     ((mem_debug_header_t*)((char*)header + header->size))->magic3
 252 #define MEM_USER_PTR(header) \
 253     ((char *)header + offsetof(mem_debug_header_t, magic3))
 254 #define MEM_HEADER_PTR(ptr) \
 255     (mem_debug_header_t *)((char*)ptr - offsetof(mem_debug_header_t, magic3))
 256
 257 struct mem_debug_header {
 258     unsigned magic1;
 259     unsigned size;
 260     struct mem_debug_header *prev;
 261     struct mem_debug_header *next;
 262     int line_num;
 263     char file_name[MEM_DEBUG_FILE_LEN + 1];
 264     unsigned magic2;
 265     ALIGNED(16) unsigned magic3;
 266 };
 267
 268 typedef struct mem_debug_header mem_debug_header_t;
 269
 270 static mem_debug_header_t *mem_debug_chain;
 271 static unsigned mem_cur_size;
 272 static unsigned mem_max_size;
 273
 274 static mem_debug_header_t *malloc_check(void *ptr, const char *msg)
 275 {
 276     mem_debug_header_t * header = MEM_HEADER_PTR(ptr);
 277     if (header->magic1 != MEM_DEBUG_MAGIC1 ||
 278         header->magic2 != MEM_DEBUG_MAGIC2 ||
 279         MEM_DEBUG_CHECK3(header) != MEM_DEBUG_MAGIC3 ||
 280         header->size == (unsigned)-1) {
 281         fprintf(stderr, "%s check failed\n", msg);
 282         if (header->magic1 == MEM_DEBUG_MAGIC1)
 283             fprintf(stderr, "%s:%u: block allocated here.\n",
 284                 header->file_name, header->line_num);
 285         exit(1);
 286     }
 287     return header;
 288 }
 289
 290 PUB_FUNC void *tcc_malloc_debug(unsigned long size, const char *file, int line)
 291 {
 292     int ofs;
 293     mem_debug_header_t *header;
 294
 295     header = malloc(sizeof(mem_debug_header_t) + size);
 296     if (!header)
 297         tcc_error("memory full (malloc)");
 298
 299     header->magic1 = MEM_DEBUG_MAGIC1;
 300     header->magic2 = MEM_DEBUG_MAGIC2;
 301     header->size = size;
 302     MEM_DEBUG_CHECK3(header) = MEM_DEBUG_MAGIC3;
 303     header->line_num = line;
 304     ofs = strlen(file) - MEM_DEBUG_FILE_LEN;
 305     strncpy(header->file_name, file + (ofs > 0 ? ofs : 0), MEM_DEBUG_FILE_LEN);
 306     header->file_name[MEM_DEBUG_FILE_LEN] = 0;
 307
 308     header->next = mem_debug_chain;
 309     header->prev = NULL;
 310     if (header->next)
 311         header->next->prev = header;
 312     mem_debug_chain = header;
 313
 314     mem_cur_size += size;
 315     if (mem_cur_size > mem_max_size)
 316         mem_max_size = mem_cur_size;
 317
 318     return MEM_USER_PTR(header);
 319 }
 320
 321 PUB_FUNC void tcc_free_debug(void *ptr)
 322 {
 323     mem_debug_header_t *header;
 324     if (!ptr)
 325         return;
 326     header = malloc_check(ptr, "tcc_free");
 327     mem_cur_size -= header->size;
 328     header->size = (unsigned)-1;
 329     if (header->next)
 330         header->next->prev = header->prev;
 331     if (header->prev)
 332         header->prev->next = header->next;
 333     if (header == mem_debug_chain)
 334         mem_debug_chain = header->next;
 335     free(header);
 336 }
 337
 338 PUB_FUNC void *tcc_mallocz_debug(unsigned long size, const char *file, int line)
 339 {
 340     void *ptr;
 341     ptr = tcc_malloc_debug(size,file,line);
 342     memset(ptr, 0, size);
 343     return ptr;
 344 }
 345
 346 PUB_FUNC void *tcc_realloc_debug(void *ptr, unsigned long size, const char *file, int line)
 347 {
 348     mem_debug_header_t *header;
 349     int mem_debug_chain_update = 0;
 350     if (!ptr)
 351         return tcc_malloc_debug(size, file, line);
 352     header = malloc_check(ptr, "tcc_realloc");
 353     mem_cur_size -= header->size;
 354     mem_debug_chain_update = (header == mem_debug_chain);
 355     header = realloc(header, sizeof(mem_debug_header_t) + size);
 356     if (!header)
 357         tcc_error("memory full (realloc)");
 358     header->size = size;
 359     MEM_DEBUG_CHECK3(header) = MEM_DEBUG_MAGIC3;
 360     if (header->next)
 361         header->next->prev = header;
 362     if (header->prev)
 363         header->prev->next = header;
 364     if (mem_debug_chain_update)
 365         mem_debug_chain = header;
 366     mem_cur_size += size;
 367     if (mem_cur_size > mem_max_size)
 368         mem_max_size = mem_cur_size;
 369     return MEM_USER_PTR(header);
 370 }
 371
 372 PUB_FUNC char *tcc_strdup_debug(const char *str, const char *file, int line)
 373 {
 374     char *ptr;
 375     ptr = tcc_malloc_debug(strlen(str) + 1, file, line);
 376     strcpy(ptr, str);
 377     return ptr;
 378 }
 379
 380 PUB_FUNC void tcc_memcheck(void)
 381 {
 382     if (mem_cur_size) {
 383         mem_debug_header_t *header = mem_debug_chain;
 384         fprintf(stderr, "MEM_DEBUG: mem_leak= %d bytes, mem_max_size= %d bytes\n",
 385             mem_cur_size, mem_max_size);
 386         while (header) {
 387             fprintf(stderr, "%s:%u: error: %u bytes leaked\n",
 388                 header->file_name, header->line_num, header->size);
 389             header = header->next;
 390         }
 391 #if MEM_DEBUG-0 == 2
 392         exit(2);
 393 #endif
 394     }
 395 }
 396 #endif /* MEM_DEBUG */
 397
 398 #define free(p) use_tcc_free(p)
 399 #define malloc(s) use_tcc_malloc(s)
 400 #define realloc(p, s) use_tcc_realloc(p, s)
 401
 402 /********************************************************/
 403 /* dynarrays */
 404
 405 ST_FUNC void dynarray_add(void *ptab, int *nb_ptr, void *data)
 406 {
 407     int nb, nb_alloc;
 408     void **pp;
 409
 410     nb = *nb_ptr;
 411     pp = *(void ***)ptab;
 412     /* every power of two we double array size */
 413     if ((nb & (nb - 1)) == 0) {
 414         if (!nb)
 415             nb_alloc = 1;
 416         else
 417             nb_alloc = nb * 2;
 418         pp = tcc_realloc(pp, nb_alloc * sizeof(void *));
 419         *(void***)ptab = pp;
 420     }
 421     pp[nb++] = data;
 422     *nb_ptr = nb;
 423 }
 424
 425 ST_FUNC void dynarray_reset(void *pp, int *n)
 426 {
 427     void **p;
 428     for (p = *(void***)pp; *n; ++p, --*n)
 429         if (*p)
 430             tcc_free(*p);
 431     tcc_free(*(void**)pp);
 432     *(void**)pp = NULL;
 433 }
 434
 435 static void tcc_split_path(TCCState *s, void *p_ary, int *p_nb_ary, const char *in)
 436 {
 437     const char *p;
 438     do {
 439         int c;
 440         CString str;
 441
 442         cstr_new(&str);
 443         for (p = in; c = *p, c != '\0' && c != PATHSEP; ++p) {
 444             if (c == '{' && p[1] && p[2] == '}') {
 445                 c = p[1], p += 2;
 446                 if (c == 'B')
 447                     cstr_cat(&str, s->tcc_lib_path, -1);
 448             } else {
 449                 cstr_ccat(&str, c);
 450             }
 451         }
 452         if (str.size) {
 453             cstr_ccat(&str, '\0');
 454             dynarray_add(p_ary, p_nb_ary, tcc_strdup(str.data));
 455         }
 456         cstr_free(&str);
 457         in = p+1;
 458     } while (*p);
 459 }
 460
 461 /********************************************************/
 462
 463 static void strcat_vprintf(char *buf, int buf_size, const char *fmt, va_list ap)
 464 {
 465     int len;
 466     len = strlen(buf);
 467     vsnprintf(buf + len, buf_size - len, fmt, ap);
 468 }
 469
 470 static void strcat_printf(char *buf, int buf_size, const char *fmt, ...)
 471 {
 472     va_list ap;
 473     va_start(ap, fmt);
 474     strcat_vprintf(buf, buf_size, fmt, ap);
 475     va_end(ap);
 476 }
 477
 478 static void error1(TCCState *s1, int is_warning, const char *fmt, va_list ap)
 479 {
 480     char buf[2048];
 481     BufferedFile **pf, *f;
 482
 483     buf[0] = '\0';
 484     /* use upper file if inline ":asm:" or token ":paste:" */
 485     for (f = file; f && f->filename[0] == ':'; f = f->prev)
 486      ;
 487     if (f) {
 488         for(pf = s1->include_stack; pf < s1->include_stack_ptr; pf++)
 489             strcat_printf(buf, sizeof(buf), "In file included from %s:%d:\n",
 490                 (*pf)->filename, (*pf)->line_num);
 491         if (f->line_num > 0) {
 492             strcat_printf(buf, sizeof(buf), "%s:%d: ",
 493                 f->filename, f->line_num - !!(tok_flags & TOK_FLAG_BOL));
 494         } else {
 495             strcat_printf(buf, sizeof(buf), "%s: ",
 496                 f->filename);
 497         }
 498     } else {
 499         strcat_printf(buf, sizeof(buf), "tcc: ");
 500     }
 501     if (is_warning)
 502         strcat_printf(buf, sizeof(buf), "warning: ");
 503     else
 504         strcat_printf(buf, sizeof(buf), "error: ");
 505     strcat_vprintf(buf, sizeof(buf), fmt, ap);
 506
 507     if (!s1->error_func) {
 508         /* default case: stderr */
 509         if (s1->output_type == TCC_OUTPUT_PREPROCESS && s1->ppfp == stdout)
 510             /* print a newline during tcc -E */
 511             printf("\n"), fflush(stdout);
 512         fflush(stdout); /* flush -v output */
 513         fprintf(stderr, "%s\n", buf);
 514         fflush(stderr); /* print error/warning now (win32) */
 515     } else {
 516         s1->error_func(s1->error_opaque, buf);
 517     }
 518     if (!is_warning || s1->warn_error)
 519         s1->nb_errors++;
 520 }
 521
 522 LIBTCCAPI void tcc_set_error_func(TCCState *s, void *error_opaque,
 523                         void (*error_func)(void *opaque, const char *msg))
 524 {
 525     s->error_opaque = error_opaque;
 526     s->error_func = error_func;
 527 }
 528
 529 /* error without aborting current compilation */
 530 PUB_FUNC void tcc_error_noabort(const char *fmt, ...)
 531 {
 532     TCCState *s1 = tcc_state;
 533     va_list ap;
 534
 535     va_start(ap, fmt);
 536     error1(s1, 0, fmt, ap);
 537     va_end(ap);
 538 }
 539
 540 PUB_FUNC void tcc_error(const char *fmt, ...)
 541 {
 542     TCCState *s1 = tcc_state;
 543     va_list ap;
 544
 545     va_start(ap, fmt);
 546     error1(s1, 0, fmt, ap);
 547     va_end(ap);
 548     /* better than nothing: in some cases, we accept to handle errors */
 549     if (s1->error_set_jmp_enabled) {
 550         longjmp(s1->error_jmp_buf, 1);
 551     } else {
 552         /* XXX: eliminate this someday */
 553         exit(1);
 554     }
 555 }
 556
 557 PUB_FUNC void tcc_warning(const char *fmt, ...)
 558 {
 559     TCCState *s1 = tcc_state;
 560     va_list ap;
 561
 562     if (s1->warn_none)
 563         return;
 564
 565     va_start(ap, fmt);
 566     error1(s1, 1, fmt, ap);
 567     va_end(ap);
 568 }
 569
 570 /********************************************************/
 571 /* I/O layer */
 572
 573 ST_FUNC void tcc_open_bf(TCCState *s1, const char *filename, int initlen)
 574 {
 575     BufferedFile *bf;
 576     int buflen = initlen ? initlen : IO_BUF_SIZE;
 577
 578     bf = tcc_mallocz(sizeof(BufferedFile) + buflen);
 579     bf->buf_ptr = bf->buffer;
 580     bf->buf_end = bf->buffer + initlen;
 581     bf->buf_end[0] = CH_EOB; /* put eob symbol */
 582     pstrcpy(bf->filename, sizeof(bf->filename), filename);
 583     bf->true_filename = bf->filename;
 584     bf->line_num = 1;
 585     bf->ifdef_stack_ptr = s1->ifdef_stack_ptr;
 586     bf->fd = -1;
 587     bf->prev = file;
 588     file = bf;
 589     tok_flags = TOK_FLAG_BOL | TOK_FLAG_BOF;
 590 }
 591
 592 ST_FUNC void tcc_close(void)
 593 {
 594     BufferedFile *bf = file;
 595     if (bf->fd > 0) {
 596         close(bf->fd);
 597         total_lines += bf->line_num;
 598     }
 599     if (bf->true_filename != bf->filename)
 600         tcc_free(bf->true_filename);
 601     file = bf->prev;
 602     tcc_free(bf);
 603 }
 604
 605 ST_FUNC int tcc_open(TCCState *s1, const char *filename)
 606 {
 607     int fd;
 608     if (strcmp(filename, "-") == 0)
 609         fd = 0, filename = "<stdin>";
 610     else
 611         fd = open(filename, O_RDONLY | O_BINARY);
 612     if ((s1->verbose == 2 && fd >= 0) || s1->verbose == 3)
 613         printf("%s %*s%s\n", fd < 0 ? "nf":"->",
 614                (int)(s1->include_stack_ptr - s1->include_stack), "", filename);
 615     if (fd < 0)
 616         return -1;
 617     tcc_open_bf(s1, filename, 0);
 618 #ifdef _WIN32
 619     normalize_slashes(file->filename);
 620 #endif
 621     file->fd = fd;
 622     return fd;
 623 }
 624
 625 /* compile the file opened in 'file'. Return non zero if errors. */
 626 static int tcc_compile(TCCState *s1)
 627 {
 628     Sym *define_start;
 629     int filetype, is_asm;
 630
 631     define_start = define_stack;
 632     filetype = s1->filetype;
 633     is_asm = filetype == AFF_TYPE_ASM || filetype == AFF_TYPE_ASMPP;
 634
 635     if (setjmp(s1->error_jmp_buf) == 0) {
 636         s1->nb_errors = 0;
 637         s1->error_set_jmp_enabled = 1;
 638
 639         preprocess_start(s1, is_asm);
 640         if (s1->output_type == TCC_OUTPUT_PREPROCESS) {
 641             tcc_preprocess(s1);
 642         } else if (is_asm) {
 643 #ifdef CONFIG_TCC_ASM
 644             tcc_assemble(s1, filetype == AFF_TYPE_ASMPP);
 645 #else
 646             tcc_error_noabort("asm not supported");
 647 #endif
 648         } else {
 649             tccgen_compile(s1);
 650         }
 651     }
 652     s1->error_set_jmp_enabled = 0;
 653
 654     preprocess_end(s1);
 655     free_inline_functions(s1);
 656     /* reset define stack, but keep -D and built-ins */
 657     free_defines(define_start);
 658     sym_pop(&global_stack, NULL, 0);
 659     sym_pop(&local_stack, NULL, 0);
 660     return s1->nb_errors != 0 ? -1 : 0;
 661 }
 662
 663 LIBTCCAPI int tcc_compile_string(TCCState *s, const char *str)
 664 {
 665     int len, ret;
 666
 667     len = strlen(str);
 668     tcc_open_bf(s, "<string>", len);
 669     memcpy(file->buffer, str, len);
 670     ret = tcc_compile(s);
 671     tcc_close();
 672     return ret;
 673 }
 674
 675 /* define a preprocessor symbol. A value can also be provided with the '=' operator */
 676 LIBTCCAPI void tcc_define_symbol(TCCState *s1, const char *sym, const char *value)
 677 {
 678     int len1, len2;
 679     /* default value */
 680     if (!value)
 681         value = "1";
 682     len1 = strlen(sym);
 683     len2 = strlen(value);
 684
 685     /* init file structure */
 686     tcc_open_bf(s1, "<define>", len1 + len2 + 1);
 687     memcpy(file->buffer, sym, len1);
 688     file->buffer[len1] = ' ';
 689     memcpy(file->buffer + len1 + 1, value, len2);
 690
 691     /* parse with define parser */
 692     next_nomacro();
 693     parse_define();
 694     tcc_close();
 695 }
 696
 697 /* undefine a preprocessor symbol */
 698 LIBTCCAPI void tcc_undefine_symbol(TCCState *s1, const char *sym)
 699 {
 700     TokenSym *ts;
 701     Sym *s;
 702     ts = tok_alloc(sym, strlen(sym));
 703     s = define_find(ts->tok);
 704     /* undefine symbol by putting an invalid name */
 705     if (s)
 706         define_undef(s);
 707 }
 708
 709 /* cleanup all static data used during compilation */
 710 static void tcc_cleanup(void)
 711 {
 712     if (NULL == tcc_state)
 713         return;
 714     while (file)
 715         tcc_close();
 716     tccpp_delete(tcc_state);
 717     tcc_state = NULL;
 718     /* free sym_pools */
 719     dynarray_reset(&sym_pools, &nb_sym_pools);
 720     /* reset symbol stack */
 721     sym_free_first = NULL;
 722 }
 723
 724 LIBTCCAPI TCCState *tcc_new(void)
 725 {
 726     TCCState *s;
 727
 728     tcc_cleanup();
 729
 730     s = tcc_mallocz(sizeof(TCCState));
 731     if (!s)
 732         return NULL;
 733     tcc_state = s;
 734     ++nb_states;
 735
 736     s->alacarte_link = 1;
 737     s->nocommon = 1;
 738     s->warn_implicit_function_declaration = 1;
 739     s->ms_extensions = 1;
 740
 741 #ifdef CHAR_IS_UNSIGNED
 742     s->char_is_unsigned = 1;
 743 #endif
 744 #ifdef TCC_TARGET_I386
 745     s->seg_size = 32;
 746 #endif
 747     /* enable this if you want symbols with leading underscore on windows: */
 748 #if 0 /* def TCC_TARGET_PE */
 749     s->leading_underscore = 1;
 750 #endif
 751 #ifdef _WIN32
 752     tcc_set_lib_path_w32(s);
 753 #else
 754     tcc_set_lib_path(s, CONFIG_TCCDIR);
 755 #endif
 756     tccelf_new(s);
 757     tccpp_new(s);
 758
 759     /* we add dummy defines for some special macros to speed up tests
 760        and to have working defined() */
 761     define_push(TOK___LINE__, MACRO_OBJ, NULL, NULL);
 762     define_push(TOK___FILE__, MACRO_OBJ, NULL, NULL);
 763     define_push(TOK___DATE__, MACRO_OBJ, NULL, NULL);
 764     define_push(TOK___TIME__, MACRO_OBJ, NULL, NULL);
 765     define_push(TOK___COUNTER__, MACRO_OBJ, NULL, NULL);
 766     {
 767         /* define __TINYC__ 92X  */
 768         char buffer[32]; int a,b,c;
 769         sscanf(TCC_VERSION, "%d.%d.%d", &a, &b, &c);
 770         sprintf(buffer, "%d", a*10000 + b*100 + c);
 771         tcc_define_symbol(s, "__TINYC__", buffer);
 772     }
 773
 774     /* standard defines */
 775     tcc_define_symbol(s, "__STDC__", NULL);
 776     tcc_define_symbol(s, "__STDC_VERSION__", "199901L");
 777     tcc_define_symbol(s, "__STDC_HOSTED__", NULL);
 778
 779     /* target defines */
 780 #if defined(TCC_TARGET_I386)
 781     tcc_define_symbol(s, "__i386__", NULL);
 782     tcc_define_symbol(s, "__i386", NULL);
 783     tcc_define_symbol(s, "i386", NULL);
 784 #elif defined(TCC_TARGET_X86_64)
 785     tcc_define_symbol(s, "__x86_64__", NULL);
 786 #elif defined(TCC_TARGET_ARM)
 787     tcc_define_symbol(s, "__ARM_ARCH_4__", NULL);
 788     tcc_define_symbol(s, "__arm_elf__", NULL);
 789     tcc_define_symbol(s, "__arm_elf", NULL);
 790     tcc_define_symbol(s, "arm_elf", NULL);
 791     tcc_define_symbol(s, "__arm__", NULL);
 792     tcc_define_symbol(s, "__arm", NULL);
 793     tcc_define_symbol(s, "arm", NULL);
 794     tcc_define_symbol(s, "__APCS_32__", NULL);
 795     tcc_define_symbol(s, "__ARMEL__", NULL);
 796 #if defined(TCC_ARM_EABI)
 797     tcc_define_symbol(s, "__ARM_EABI__", NULL);
 798 #endif
 799 #if defined(TCC_ARM_HARDFLOAT)
 800     s->float_abi = ARM_HARD_FLOAT;
 801     tcc_define_symbol(s, "__ARM_PCS_VFP", NULL);
 802 #else
 803     s->float_abi = ARM_SOFTFP_FLOAT;
 804 #endif
 805 #elif defined(TCC_TARGET_ARM64)
 806     tcc_define_symbol(s, "__aarch64__", NULL);
 807 #endif
 808
 809 #ifdef TCC_TARGET_PE
 810     tcc_define_symbol(s, "_WIN32", NULL);
 811 # ifdef TCC_TARGET_X86_64
 812     tcc_define_symbol(s, "_WIN64", NULL);
 813 # endif
 814 #else
 815     tcc_define_symbol(s, "__unix__", NULL);
 816     tcc_define_symbol(s, "__unix", NULL);
 817     tcc_define_symbol(s, "unix", NULL);
 818 # if defined(__linux__)
 819     tcc_define_symbol(s, "__linux__", NULL);
 820     tcc_define_symbol(s, "__linux", NULL);
 821 # endif
 822 # if defined(__FreeBSD__)
 823     tcc_define_symbol(s, "__FreeBSD__", "__FreeBSD__");
 824     /* No 'Thread Storage Local' on FreeBSD with tcc */
 825     tcc_define_symbol(s, "__NO_TLS", NULL);
 826 # endif
 827 # if defined(__FreeBSD_kernel__)
 828     tcc_define_symbol(s, "__FreeBSD_kernel__", NULL);
 829 # endif
 830 #endif
 831 # if defined(__NetBSD__)
 832     tcc_define_symbol(s, "__NetBSD__", "__NetBSD__");
 833 # endif
 834 # if defined(__OpenBSD__)
 835     tcc_define_symbol(s, "__OpenBSD__", "__OpenBSD__");
 836 # endif
 837
 838     /* TinyCC & gcc defines */
 839 #if PTR_SIZE == 4
 840     /* 32bit systems. */
 841     tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned int");
 842     tcc_define_symbol(s, "__PTRDIFF_TYPE__", "int");
 843     tcc_define_symbol(s, "__ILP32__", NULL);
 844 #elif LONG_SIZE == 4
 845     /* 64bit Windows. */
 846     tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned long long");
 847     tcc_define_symbol(s, "__PTRDIFF_TYPE__", "long long");
 848     tcc_define_symbol(s, "__LLP64__", NULL);
 849 #else
 850     /* Other 64bit systems. */
 851     tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned long");
 852     tcc_define_symbol(s, "__PTRDIFF_TYPE__", "long");
 853     tcc_define_symbol(s, "__LP64__", NULL);
 854 #endif
 855
 856 #if defined(TCC_MUSL)
 857     tcc_define_symbol(s, "__TCC_NEEDS_va_list", "");
 858     tcc_define_symbol(s, "__builtin_va_list", "va_list");
 859     tcc_define_symbol(s, "__DEFINED_va_list", "");
 860     tcc_define_symbol(s, "__DEFINED___isoc_va_list", "");
 861     tcc_define_symbol(s, "__isoc_va_list", "void *");
 862 #endif /* TCC_MUSL */
 863
 864 #ifdef TCC_TARGET_PE
 865     tcc_define_symbol(s, "__WCHAR_TYPE__", "unsigned short");
 866     tcc_define_symbol(s, "__WINT_TYPE__", "unsigned short");
 867 #else
 868     tcc_define_symbol(s, "__WCHAR_TYPE__", "int");
 869     /* wint_t is unsigned int by default, but (signed) int on BSDs
 870        and unsigned short on windows.  Other OSes might have still
 871        other conventions, sigh.  */
 872 # if defined(__FreeBSD__) || defined (__FreeBSD_kernel__) \
 873   || defined(__NetBSD__) || defined(__OpenBSD__)
 874     tcc_define_symbol(s, "__WINT_TYPE__", "int");
 875 #  ifdef __FreeBSD__
 876     /* define __GNUC__ to have some useful stuff from sys/cdefs.h
 877        that are unconditionally used in FreeBSDs other system headers :/ */
 878     tcc_define_symbol(s, "__GNUC__", "2");
 879     tcc_define_symbol(s, "__GNUC_MINOR__", "7");
 880     tcc_define_symbol(s, "__builtin_alloca", "alloca");
 881 #  endif
 882 # else
 883     tcc_define_symbol(s, "__WINT_TYPE__", "unsigned int");
 884     /* glibc defines */
 885     tcc_define_symbol(s, "__REDIRECT(name, proto, alias)",
 886         "name proto __asm__ (#alias)");
 887     tcc_define_symbol(s, "__REDIRECT_NTH(name, proto, alias)",
 888         "name proto __asm__ (#alias) __THROW");
 889 # endif
 890     /* Some GCC builtins that are simple to express as macros.  */
 891     tcc_define_symbol(s, "__builtin_extract_return_addr(x)", "x");
 892 #endif /* ndef TCC_TARGET_PE */
 893     return s;
 894 }
 895
 896 LIBTCCAPI void tcc_delete(TCCState *s1)
 897 {
 898     tcc_cleanup();
 899
 900     /* free sections */
 901     tccelf_delete(s1);
 902
 903     /* free library paths */
 904     dynarray_reset(&s1->library_paths, &s1->nb_library_paths);
 905     dynarray_reset(&s1->crt_paths, &s1->nb_crt_paths);
 906
 907     /* free include paths */
 908     dynarray_reset(&s1->cached_includes, &s1->nb_cached_includes);
 909     dynarray_reset(&s1->tccinclude_paths, &s1->nb_tccinclude_paths);
 910     dynarray_reset(&s1->include_paths, &s1->nb_include_paths);
 911     dynarray_reset(&s1->sysinclude_paths, &s1->nb_sysinclude_paths);
 912     dynarray_reset(&s1->cmd_include_files, &s1->nb_cmd_include_files);
 913
 914     tcc_free(s1->tcc_lib_path);
 915     tcc_free(s1->soname);
 916     tcc_free(s1->rpath);
 917     tcc_free(s1->init_symbol);
 918     tcc_free(s1->fini_symbol);
 919     tcc_free(s1->outfile);
 920     tcc_free(s1->deps_outfile);
 921     dynarray_reset(&s1->files, &s1->nb_files);
 922     dynarray_reset(&s1->target_deps, &s1->nb_target_deps);
 923     dynarray_reset(&s1->pragma_libs, &s1->nb_pragma_libs);
 924     dynarray_reset(&s1->argv, &s1->argc);
 925
 926 #ifdef TCC_IS_NATIVE
 927     /* free runtime memory */
 928     tcc_run_free(s1);
 929 #endif
 930
 931     tcc_free(s1);
 932     if (0 == --nb_states)
 933         tcc_memcheck();
 934 }
 935
 936 LIBTCCAPI int tcc_set_output_type(TCCState *s, int output_type)
 937 {
 938     s->output_type = output_type;
 939
 940     /* always elf for objects */
 941     if (output_type == TCC_OUTPUT_OBJ)
 942         s->output_format = TCC_OUTPUT_FORMAT_ELF;
 943
 944     if (s->char_is_unsigned)
 945         tcc_define_symbol(s, "__CHAR_UNSIGNED__", NULL);
 946
 947     if (!s->nostdinc) {
 948         /* default include paths */
 949         /* -isystem paths have already been handled */
 950         tcc_add_tccinclude_path(s, CONFIG_TCC_TCCINCLUDEPATHS);
 951         tcc_add_sysinclude_path(s, CONFIG_TCC_SYSINCLUDEPATHS);
 952     }
 953
 954 #ifdef CONFIG_TCC_BCHECK
 955     if (s->do_bounds_check) {
 956         /* if bound checking, then add corresponding sections */
 957         tccelf_bounds_new(s);
 958         /* define symbol */
 959         tcc_define_symbol(s, "__BOUNDS_CHECKING_ON", NULL);
 960     }
 961 #endif
 962     if (s->do_debug) {
 963         /* add debug sections */
 964         tccelf_stab_new(s);
 965     }
 966
 967     tcc_add_library_path(s, CONFIG_TCC_LIBPATHS);
 968
 969 #ifdef TCC_TARGET_PE
 970 # ifdef _WIN32
 971     if (!s->nostdlib && output_type != TCC_OUTPUT_OBJ)
 972         tcc_add_systemdir(s);
 973 # endif
 974 #else
 975     /* paths for crt objects */
 976     tcc_split_path(s, &s->crt_paths, &s->nb_crt_paths, CONFIG_TCC_CRTPREFIX);
 977     /* add libc crt1/crti objects */
 978     if ((output_type == TCC_OUTPUT_EXE || output_type == TCC_OUTPUT_DLL) &&
 979         !s->nostdlib) {
 980         if (output_type != TCC_OUTPUT_DLL)
 981             tcc_add_crt(s, "crt1.o");
 982         tcc_add_crt(s, "crti.o");
 983     }
 984 #endif
 985     return 0;
 986 }
 987
 988 LIBTCCAPI int tcc_add_tccinclude_path(TCCState *s, const char *pathname)
 989 {
 990     tcc_split_path(s, &s->tccinclude_paths, &s->nb_tccinclude_paths, pathname);
 991     return 0;
 992 }
 993
 994 LIBTCCAPI int tcc_add_include_path(TCCState *s, const char *pathname)
 995 {
 996     tcc_split_path(s, &s->include_paths, &s->nb_include_paths, pathname);
 997     return 0;
 998 }
 999
1000 LIBTCCAPI int tcc_add_sysinclude_path(TCCState *s, const char *pathname)
1001 {
1002     tcc_split_path(s, &s->sysinclude_paths, &s->nb_sysinclude_paths, pathname);
1003     return 0;
1004 }
1005
1006 ST_FUNC int tcc_add_file_internal(TCCState *s1, const char *filename, int flags)
1007 {
1008     int ret;
1009
1010     /* open the file */
1011     ret = tcc_open(s1, filename);
1012     if (ret < 0) {
1013         if (flags & AFF_PRINT_ERROR)
1014             tcc_error_noabort("file '%s' not found", filename);
1015         return ret;
1016     }
1017
1018     /* update target deps */
1019     dynarray_add(&s1->target_deps, &s1->nb_target_deps,
1020             tcc_strdup(filename));
1021
1022     if (flags & AFF_TYPE_BIN) {
1023         ElfW(Ehdr) ehdr;
1024         int fd, obj_type;
1025
1026         fd = file->fd;
1027         obj_type = tcc_object_type(fd, &ehdr);
1028         lseek(fd, 0, SEEK_SET);
1029
1030         /* do not display line number if error */
1031         file->line_num = 0;
1032
1033 #ifdef TCC_TARGET_MACHO
1034         if (0 == obj_type && 0 == strcmp(tcc_fileextension(filename), "dylib"))
1035             obj_type = AFF_BINTYPE_DYN;
1036 #endif
1037
1038         switch (obj_type) {
1039         case AFF_BINTYPE_REL:
1040             ret = tcc_load_object_file(s1, fd, 0);
1041             break;
1042 #ifndef TCC_TARGET_PE
1043         case AFF_BINTYPE_DYN:
1044             if (s1->output_type == TCC_OUTPUT_MEMORY) {
1045                 ret = 0;
1046 #ifdef TCC_IS_NATIVE
1047                 if (NULL == dlopen(filename, RTLD_GLOBAL | RTLD_LAZY))
1048                     ret = -1;
1049 #endif
1050             } else {
1051                 ret = tcc_load_dll(s1, fd, filename,
1052                                    (flags & AFF_REFERENCED_DLL) != 0);
1053             }
1054             break;
1055 #endif
1056         case AFF_BINTYPE_AR:
1057             ret = tcc_load_archive(s1, fd);
1058             break;
1059 #ifdef TCC_TARGET_COFF
1060         case AFF_BINTYPE_C67:
1061             ret = tcc_load_coff(s1, fd);
1062             break;
1063 #endif
1064         default:
1065 #ifdef TCC_TARGET_PE
1066             ret = pe_load_file(s1, filename, fd);
1067 #else
1068             /* as GNU ld, consider it is an ld script if not recognized */
1069             ret = tcc_load_ldscript(s1);
1070 #endif
1071             if (ret < 0)
1072                 tcc_error_noabort("unrecognized file type");
1073             break;
1074         }
1075     } else {
1076         ret = tcc_compile(s1);
1077     }
1078     tcc_close();
1079     return ret;
1080 }
1081
1082 LIBTCCAPI int tcc_add_file(TCCState *s, const char *filename)
1083 {
1084     int filetype = s->filetype;
1085     int flags = AFF_PRINT_ERROR;
1086     if (filetype == 0) {
1087         /* use a file extension to detect a filetype */
1088         const char *ext = tcc_fileextension(filename);
1089         if (ext[0]) {
1090             ext++;
1091             if (!strcmp(ext, "S"))
1092                 filetype = AFF_TYPE_ASMPP;
1093             else if (!strcmp(ext, "s"))
1094                 filetype = AFF_TYPE_ASM;
1095             else if (!PATHCMP(ext, "c") || !PATHCMP(ext, "i"))
1096                 filetype = AFF_TYPE_C;
1097             else
1098                 flags |= AFF_TYPE_BIN;
1099         } else {
1100             filetype = AFF_TYPE_C;
1101         }
1102         s->filetype = filetype;
1103     }
1104     return tcc_add_file_internal(s, filename, flags);
1105 }
1106
1107 LIBTCCAPI int tcc_add_library_path(TCCState *s, const char *pathname)
1108 {
1109     tcc_split_path(s, &s->library_paths, &s->nb_library_paths, pathname);
1110     return 0;
1111 }
1112
1113 static int tcc_add_library_internal(TCCState *s, const char *fmt,
1114     const char *filename, int flags, char **paths, int nb_paths)
1115 {
1116     char buf[1024];
1117     int i;
1118
1119     for(i = 0; i < nb_paths; i++) {
1120         snprintf(buf, sizeof(buf), fmt, paths[i], filename);
1121         if (tcc_add_file_internal(s, buf, flags | AFF_TYPE_BIN) == 0)
1122             return 0;
1123     }
1124     return -1;
1125 }
1126
1127 /* find and load a dll. Return non zero if not found */
1128 /* XXX: add '-rpath' option support ? */
1129 ST_FUNC int tcc_add_dll(TCCState *s, const char *filename, int flags)
1130 {
1131     return tcc_add_library_internal(s, "%s/%s", filename, flags,
1132         s->library_paths, s->nb_library_paths);
1133 }
1134
1135 ST_FUNC int tcc_add_crt(TCCState *s, const char *filename)
1136 {
1137     if (-1 == tcc_add_library_internal(s, "%s/%s",
1138         filename, 0, s->crt_paths, s->nb_crt_paths))
1139         tcc_error_noabort("file '%s' not found", filename);
1140     return 0;
1141 }
1142
1143 /* the library name is the same as the argument of the '-l' option */
1144 LIBTCCAPI int tcc_add_library(TCCState *s, const char *libraryname)
1145 {
1146 #if defined TCC_TARGET_PE
1147     const char *libs[] = { "%s/%s.def", "%s/lib%s.def", "%s/%s.dll", "%s/lib%s.dll", "%s/lib%s.a", NULL };
1148     const char **pp = s->static_link ? libs + 4 : libs;
1149 #elif defined TCC_TARGET_MACHO
1150     const char *libs[] = { "%s/lib%s.dylib", "%s/lib%s.a", NULL };
1151     const char **pp = s->static_link ? libs + 1 : libs;
1152 #else
1153     const char *libs[] = { "%s/lib%s.so", "%s/lib%s.a", NULL };
1154     const char **pp = s->static_link ? libs + 1 : libs;
1155 #endif
1156     while (*pp) {
1157         if (0 == tcc_add_library_internal(s, *pp,
1158             libraryname, 0, s->library_paths, s->nb_library_paths))
1159             return 0;
1160         ++pp;
1161     }
1162     return -1;
1163 }
1164
1165 PUB_FUNC int tcc_add_library_err(TCCState *s, const char *libname)
1166 {
1167     int ret = tcc_add_library(s, libname);
1168     if (ret < 0)
1169         tcc_error_noabort("library '%s' not found", libname);
1170     return ret;
1171 }
1172
1173 /* handle #pragma comment(lib,) */
1174 ST_FUNC void tcc_add_pragma_libs(TCCState *s1)
1175 {
1176     int i;
1177     for (i = 0; i < s1->nb_pragma_libs; i++)
1178         tcc_add_library_err(s1, s1->pragma_libs[i]);
1179 }
1180
1181 LIBTCCAPI int tcc_add_symbol(TCCState *s, const char *name, const void *val)
1182 {
1183 #ifdef TCC_TARGET_PE
1184     /* On x86_64 'val' might not be reachable with a 32bit offset.
1185        So it is handled here as if it were in a DLL. */
1186     pe_putimport(s, 0, name, (uintptr_t)val);
1187 #else
1188     set_elf_sym(symtab_section, (uintptr_t)val, 0,
1189         ELFW(ST_INFO)(STB_GLOBAL, STT_NOTYPE), 0,
1190         SHN_ABS, name);
1191 #endif
1192     return 0;
1193 }
1194
1195 LIBTCCAPI void tcc_set_lib_path(TCCState *s, const char *path)
1196 {
1197     tcc_free(s->tcc_lib_path);
1198     s->tcc_lib_path = tcc_strdup(path);
1199 }
1200
1201 #define WD_ALL    0x0001 /* warning is activated when using -Wall */
1202 #define FD_INVERT 0x0002 /* invert value before storing */
1203
1204 typedef struct FlagDef {
1205     uint16_t offset;
1206     uint16_t flags;
1207     const char *name;
1208 } FlagDef;
1209
1210 static int no_flag(const char **pp)
1211 {
1212     const char *p = *pp;
1213     if (*p != 'n' || *++p != 'o' || *++p != '-')
1214         return 0;
1215     *pp = p + 1;
1216     return 1;
1217 }
1218
1219 ST_FUNC int set_flag(TCCState *s, const FlagDef *flags, const char *name)
1220 {
1221     int value, ret;
1222     const FlagDef *p;
1223     const char *r;
1224
1225     value = 1;
1226     r = name;
1227     if (no_flag(&r))
1228         value = 0;
1229
1230     for (ret = -1, p = flags; p->name; ++p) {
1231         if (ret) {
1232             if (strcmp(r, p->name))
1233                 continue;
1234         } else {
1235             if (0 == (p->flags & WD_ALL))
1236                 continue;
1237         }
1238         if (p->offset) {
1239             *(int*)((char *)s + p->offset) =
1240                 p->flags & FD_INVERT ? !value : value;
1241             if (ret)
1242                 return 0;
1243         } else {
1244             ret = 0;
1245         }
1246     }
1247     return ret;
1248 }
1249
1250 static int strstart(const char *val, const char **str)
1251 {
1252     const char *p, *q;
1253     p = *str;
1254     q = val;
1255     while (*q) {
1256         if (*p != *q)
1257             return 0;
1258         p++;
1259         q++;
1260     }
1261     *str = p;
1262     return 1;
1263 }
1264
1265 /* Like strstart, but automatically takes into account that ld options can
1266  *
1267  * - start with double or single dash (e.g. '--soname' or '-soname')
1268  * - arguments can be given as separate or after '=' (e.g. '-Wl,-soname,x.so'
1269  *   or '-Wl,-soname=x.so')
1270  *
1271  * you provide `val` always in 'option[=]' form (no leading -)
1272  */
1273 static int link_option(const char *str, const char *val, const char **ptr)
1274 {
1275     const char *p, *q;
1276     int ret;
1277
1278     /* there should be 1 or 2 dashes */
1279     if (*str++ != '-')
1280         return 0;
1281     if (*str == '-')
1282         str++;
1283
1284     /* then str & val should match (potentially up to '=') */
1285     p = str;
1286     q = val;
1287
1288     ret = 1;
1289     if (q[0] == '?') {
1290         ++q;
1291         if (no_flag(&p))
1292             ret = -1;
1293     }
1294
1295     while (*q != '\0' && *q != '=') {
1296         if (*p != *q)
1297             return 0;
1298         p++;
1299         q++;
1300     }
1301
1302     /* '=' near eos means ',' or '=' is ok */
1303     if (*q == '=') {
1304         if (*p == 0)
1305             *ptr = p;
1306         if (*p != ',' && *p != '=')
1307             return 0;
1308         p++;
1309     } else if (*p) {
1310         return 0;
1311     }
1312     *ptr = p;
1313     return ret;
1314 }
1315
1316 static const char *skip_linker_arg(const char **str)
1317 {
1318     const char *s1 = *str;
1319     const char *s2 = strchr(s1, ',');
1320     *str = s2 ? s2++ : (s2 = s1 + strlen(s1));
1321     return s2;
1322 }
1323
1324 static void copy_linker_arg(char **pp, const char *s, int sep)
1325 {
1326     const char *q = s;
1327     char *p = *pp;
1328     int l = 0;
1329     if (p && sep)
1330         p[l = strlen(p)] = sep, ++l;
1331     skip_linker_arg(&q);
1332     pstrncpy(l + (*pp = tcc_realloc(p, q - s + l + 1)), s, q - s);
1333 }
1334
1335 /* set linker options */
1336 static int tcc_set_linker(TCCState *s, const char *option)
1337 {
1338     while (*option) {
1339
1340         const char *p = NULL;
1341         char *end = NULL;
1342         int ignoring = 0;
1343         int ret;
1344
1345         if (link_option(option, "Bsymbolic", &p)) {
1346             s->symbolic = 1;
1347         } else if (link_option(option, "nostdlib", &p)) {
1348             s->nostdlib = 1;
1349         } else if (link_option(option, "fini=", &p)) {
1350             copy_linker_arg(&s->fini_symbol, p, 0);
1351             ignoring = 1;
1352         } else if (link_option(option, "image-base=", &p)
1353                 || link_option(option, "Ttext=", &p)) {
1354             s->text_addr = strtoull(p, &end, 16);
1355             s->has_text_addr = 1;
1356         } else if (link_option(option, "init=", &p)) {
1357             copy_linker_arg(&s->init_symbol, p, 0);
1358             ignoring = 1;
1359         } else if (link_option(option, "oformat=", &p)) {
1360 #if defined(TCC_TARGET_PE)
1361             if (strstart("pe-", &p)) {
1362 #elif PTR_SIZE == 8
1363             if (strstart("elf64-", &p)) {
1364 #else
1365             if (strstart("elf32-", &p)) {
1366 #endif
1367                 s->output_format = TCC_OUTPUT_FORMAT_ELF;
1368             } else if (!strcmp(p, "binary")) {
1369                 s->output_format = TCC_OUTPUT_FORMAT_BINARY;
1370 #ifdef TCC_TARGET_COFF
1371             } else if (!strcmp(p, "coff")) {
1372                 s->output_format = TCC_OUTPUT_FORMAT_COFF;
1373 #endif
1374             } else
1375                 goto err;
1376
1377         } else if (link_option(option, "as-needed", &p)) {
1378             ignoring = 1;
1379         } else if (link_option(option, "O", &p)) {
1380             ignoring = 1;
1381         } else if (link_option(option, "export-all-symbols", &p)) {
1382             s->rdynamic = 1;
1383         } else if (link_option(option, "rpath=", &p)) {
1384             copy_linker_arg(&s->rpath, p, ':');
1385         } else if (link_option(option, "enable-new-dtags", &p)) {
1386             s->enable_new_dtags = 1;
1387         } else if (link_option(option, "section-alignment=", &p)) {
1388             s->section_align = strtoul(p, &end, 16);
1389         } else if (link_option(option, "soname=", &p)) {
1390             copy_linker_arg(&s->soname, p, 0);
1391 #ifdef TCC_TARGET_PE
1392         } else if (link_option(option, "large-address-aware", &p)) {
1393             s->pe_characteristics |= 0x20;
1394         } else if (link_option(option, "file-alignment=", &p)) {
1395             s->pe_file_align = strtoul(p, &end, 16);
1396         } else if (link_option(option, "stack=", &p)) {
1397             s->pe_stack_size = strtoul(p, &end, 10);
1398         } else if (link_option(option, "subsystem=", &p)) {
1399 #if defined(TCC_TARGET_I386) || defined(TCC_TARGET_X86_64)
1400             if (!strcmp(p, "native")) {
1401                 s->pe_subsystem = 1;
1402             } else if (!strcmp(p, "console")) {
1403                 s->pe_subsystem = 3;
1404             } else if (!strcmp(p, "gui") || !strcmp(p, "windows")) {
1405                 s->pe_subsystem = 2;
1406             } else if (!strcmp(p, "posix")) {
1407                 s->pe_subsystem = 7;
1408             } else if (!strcmp(p, "efiapp")) {
1409                 s->pe_subsystem = 10;
1410             } else if (!strcmp(p, "efiboot")) {
1411                 s->pe_subsystem = 11;
1412             } else if (!strcmp(p, "efiruntime")) {
1413                 s->pe_subsystem = 12;
1414             } else if (!strcmp(p, "efirom")) {
1415                 s->pe_subsystem = 13;
1416 #elif defined(TCC_TARGET_ARM)
1417             if (!strcmp(p, "wince")) {
1418                 s->pe_subsystem = 9;
1419 #endif
1420             } else
1421                 goto err;
1422 #endif
1423         } else if (ret = link_option(option, "?whole-archive", &p), ret) {
1424             s->alacarte_link = ret < 0;
1425         } else if (p) {
1426             return 0;
1427         } else {
1428     err:
1429             tcc_error("unsupported linker option '%s'", option);
1430         }
1431
1432         if (ignoring && s->warn_unsupported)
1433             tcc_warning("unsupported linker option '%s'", option);
1434
1435         option = skip_linker_arg(&p);
1436     }
1437     return 1;
1438 }
1439
1440 typedef struct TCCOption {
1441     const char *name;
1442     uint16_t index;
1443     uint16_t flags;
1444 } TCCOption;
1445
1446 enum {
1447     TCC_OPTION_HELP,
1448     TCC_OPTION_HELP2,
1449     TCC_OPTION_v,
1450     TCC_OPTION_I,
1451     TCC_OPTION_D,
1452     TCC_OPTION_U,
1453     TCC_OPTION_P,
1454     TCC_OPTION_L,
1455     TCC_OPTION_B,
1456     TCC_OPTION_l,
1457     TCC_OPTION_bench,
1458     TCC_OPTION_bt,
1459     TCC_OPTION_b,
1460     TCC_OPTION_g,
1461     TCC_OPTION_c,
1462     TCC_OPTION_dumpversion,
1463     TCC_OPTION_d,
1464     TCC_OPTION_static,
1465     TCC_OPTION_std,
1466     TCC_OPTION_shared,
1467     TCC_OPTION_soname,
1468     TCC_OPTION_o,
1469     TCC_OPTION_r,
1470     TCC_OPTION_s,
1471     TCC_OPTION_traditional,
1472     TCC_OPTION_Wl,
1473     TCC_OPTION_Wp,
1474     TCC_OPTION_W,
1475     TCC_OPTION_O,
1476     TCC_OPTION_mfloat_abi,
1477     TCC_OPTION_m,
1478     TCC_OPTION_f,
1479     TCC_OPTION_isystem,
1480     TCC_OPTION_iwithprefix,
1481     TCC_OPTION_include,
1482     TCC_OPTION_nostdinc,
1483     TCC_OPTION_nostdlib,
1484     TCC_OPTION_print_search_dirs,
1485     TCC_OPTION_rdynamic,
1486     TCC_OPTION_param,
1487     TCC_OPTION_pedantic,
1488     TCC_OPTION_pthread,
1489     TCC_OPTION_run,
1490     TCC_OPTION_w,
1491     TCC_OPTION_pipe,
1492     TCC_OPTION_E,
1493     TCC_OPTION_MD,
1494     TCC_OPTION_MF,
1495     TCC_OPTION_x,
1496     TCC_OPTION_ar,
1497     TCC_OPTION_impdef
1498 };
1499
1500 #define TCC_OPTION_HAS_ARG 0x0001
1501 #define TCC_OPTION_NOSEP   0x0002 /* cannot have space before option and arg */
1502
1503 static const TCCOption tcc_options[] = {
1504     { "h", TCC_OPTION_HELP, 0 },
1505     { "-help", TCC_OPTION_HELP, 0 },
1506     { "?", TCC_OPTION_HELP, 0 },
1507     { "hh", TCC_OPTION_HELP2, 0 },
1508     { "v", TCC_OPTION_v, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1509     { "I", TCC_OPTION_I, TCC_OPTION_HAS_ARG },
1510     { "D", TCC_OPTION_D, TCC_OPTION_HAS_ARG },
1511     { "U", TCC_OPTION_U, TCC_OPTION_HAS_ARG },
1512     { "P", TCC_OPTION_P, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1513     { "L", TCC_OPTION_L, TCC_OPTION_HAS_ARG },
1514     { "B", TCC_OPTION_B, TCC_OPTION_HAS_ARG },
1515     { "l", TCC_OPTION_l, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1516     { "bench", TCC_OPTION_bench, 0 },
1517 #ifdef CONFIG_TCC_BACKTRACE
1518     { "bt", TCC_OPTION_bt, TCC_OPTION_HAS_ARG },
1519 #endif
1520 #ifdef CONFIG_TCC_BCHECK
1521     { "b", TCC_OPTION_b, 0 },
1522 #endif
1523     { "g", TCC_OPTION_g, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1524     { "c", TCC_OPTION_c, 0 },
1525     { "dumpversion", TCC_OPTION_dumpversion, 0},
1526     { "d", TCC_OPTION_d, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1527     { "static", TCC_OPTION_static, 0 },
1528     { "std", TCC_OPTION_std, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1529     { "shared", TCC_OPTION_shared, 0 },
1530     { "soname", TCC_OPTION_soname, TCC_OPTION_HAS_ARG },
1531     { "o", TCC_OPTION_o, TCC_OPTION_HAS_ARG },
1532     { "-param", TCC_OPTION_param, TCC_OPTION_HAS_ARG },
1533     { "pedantic", TCC_OPTION_pedantic, 0},
1534     { "pthread", TCC_OPTION_pthread, 0},
1535     { "run", TCC_OPTION_run, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1536     { "rdynamic", TCC_OPTION_rdynamic, 0 },
1537     { "r", TCC_OPTION_r, 0 },
1538     { "s", TCC_OPTION_s, 0 },
1539     { "traditional", TCC_OPTION_traditional, 0 },
1540     { "Wl,", TCC_OPTION_Wl, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1541     { "Wp,", TCC_OPTION_Wp, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1542     { "W", TCC_OPTION_W, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1543     { "O", TCC_OPTION_O, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1544 #ifdef TCC_TARGET_ARM
1545     { "mfloat-abi", TCC_OPTION_mfloat_abi, TCC_OPTION_HAS_ARG },
1546 #endif
1547     { "m", TCC_OPTION_m, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1548     { "f", TCC_OPTION_f, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1549     { "isystem", TCC_OPTION_isystem, TCC_OPTION_HAS_ARG },
1550     { "iwithprefix", TCC_OPTION_iwithprefix, TCC_OPTION_HAS_ARG },
1551     { "include", TCC_OPTION_include, TCC_OPTION_HAS_ARG },
1552     { "nostdinc", TCC_OPTION_nostdinc, 0 },
1553     { "nostdlib", TCC_OPTION_nostdlib, 0 },
1554     { "print-search-dirs", TCC_OPTION_print_search_dirs, 0 },
1555     { "w", TCC_OPTION_w, 0 },
1556     { "pipe", TCC_OPTION_pipe, 0},
1557     { "E", TCC_OPTION_E, 0},
1558     { "MD", TCC_OPTION_MD, 0},
1559     { "MF", TCC_OPTION_MF, TCC_OPTION_HAS_ARG },
1560     { "x", TCC_OPTION_x, TCC_OPTION_HAS_ARG },
1561     { "ar", TCC_OPTION_ar, 0},
1562 #ifdef TCC_TARGET_PE
1563     { "impdef", TCC_OPTION_impdef, 0},
1564 #endif
1565     { NULL, 0, 0 },
1566 };
1567
1568 static const FlagDef options_W[] = {
1569     { 0, 0, "all" },
1570     { offsetof(TCCState, warn_unsupported), 0, "unsupported" },
1571     { offsetof(TCCState, warn_write_strings), 0, "write-strings" },
1572     { offsetof(TCCState, warn_error), 0, "error" },
1573     { offsetof(TCCState, warn_gcc_compat), 0, "gcc-compat" },
1574     { offsetof(TCCState, warn_implicit_function_declaration), WD_ALL,
1575       "implicit-function-declaration" },
1576     { 0, 0, NULL }
1577 };
1578
1579 static const FlagDef options_f[] = {
1580     { offsetof(TCCState, char_is_unsigned), 0, "unsigned-char" },
1581     { offsetof(TCCState, char_is_unsigned), FD_INVERT, "signed-char" },
1582     { offsetof(TCCState, nocommon), FD_INVERT, "common" },
1583     { offsetof(TCCState, leading_underscore), 0, "leading-underscore" },
1584     { offsetof(TCCState, ms_extensions), 0, "ms-extensions" },
1585     { offsetof(TCCState, dollars_in_identifiers), 0, "dollars-in-identifiers" },
1586     { 0, 0, NULL }
1587 };
1588
1589 static const FlagDef options_m[] = {
1590     { offsetof(TCCState, ms_bitfields), 0, "ms-bitfields" },
1591 #ifdef TCC_TARGET_X86_64
1592     { offsetof(TCCState, nosse), FD_INVERT, "sse" },
1593 #endif
1594     { 0, 0, NULL }
1595 };
1596
1597 static void parse_option_D(TCCState *s1, const char *optarg)
1598 {
1599     char *sym = tcc_strdup(optarg);
1600     char *value = strchr(sym, '=');
1601     if (value)
1602         *value++ = '\0';
1603     tcc_define_symbol(s1, sym, value);
1604     tcc_free(sym);
1605 }
1606
1607 static void args_parser_add_file(TCCState *s, const char* filename, int filetype)
1608 {
1609     struct filespec *f = tcc_malloc(sizeof *f + strlen(filename));
1610     f->type = filetype;
1611     f->alacarte = s->alacarte_link;
1612     strcpy(f->name, filename);
1613     dynarray_add(&s->files, &s->nb_files, f);
1614 }
1615
1616 static int args_parser_make_argv(const char *r, int *argc, char ***argv)
1617 {
1618     int ret = 0, q, c;
1619     CString str;
1620     for(;;) {
1621         while (c = (unsigned char)*r, c && c <= ' ')
1622             ++r;
1623         if (c == 0)
1624             break;
1625         q = 0;
1626         cstr_new(&str);
1627         while (c = (unsigned char)*r, c) {
1628             ++r;
1629             if (c == '\\' && (*r == '"' || *r == '\\')) {
1630                 c = *r++;
1631             } else if (c == '"') {
1632                 q = !q;
1633                 continue;
1634             } else if (q == 0 && c <= ' ') {
1635                 break;
1636             }
1637             cstr_ccat(&str, c);
1638         }
1639         cstr_ccat(&str, 0);
1640         //printf("<%s>\n", str.data), fflush(stdout);
1641         dynarray_add(argv, argc, tcc_strdup(str.data));
1642         cstr_free(&str);
1643         ++ret;
1644     }
1645     return ret;
1646 }
1647
1648 /* read list file */
1649 static void args_parser_listfile(TCCState *s,
1650     const char *filename, int optind, int *pargc, char ***pargv)
1651 {
1652     int fd, i;
1653     size_t len;
1654     char *p;
1655     int argc = 0;
1656     char **argv = NULL;
1657
1658     fd = open(filename, O_RDONLY | O_BINARY);
1659     if (fd < 0)
1660         tcc_error("listfile '%s' not found", filename);
1661
1662     len = lseek(fd, 0, SEEK_END);
1663     p = tcc_malloc(len + 1), p[len] = 0;
1664     lseek(fd, 0, SEEK_SET), read(fd, p, len), close(fd);
1665
1666     for (i = 0; i < *pargc; ++i)
1667         if (i == optind)
1668             args_parser_make_argv(p, &argc, &argv);
1669         else
1670             dynarray_add(&argv, &argc, tcc_strdup((*pargv)[i]));
1671
1672     tcc_free(p);
1673     dynarray_reset(&s->argv, &s->argc);
1674     *pargc = s->argc = argc, *pargv = s->argv = argv;
1675 }
1676
1677 PUB_FUNC int tcc_parse_args(TCCState *s, int *pargc, char ***pargv, int optind)
1678 {
1679     const TCCOption *popt;
1680     const char *optarg, *r;
1681     const char *run = NULL;
1682     int last_o = -1;
1683     int x;
1684     CString linker_arg; /* collect -Wl options */
1685     char buf[1024];
1686     int tool = 0, arg_start = 0, noaction = optind;
1687     char **argv = *pargv;
1688     int argc = *pargc;
1689
1690     cstr_new(&linker_arg);
1691
1692     while (optind < argc) {
1693         r = argv[optind];
1694         if (r[0] == '@' && r[1] != '\0') {
1695             args_parser_listfile(s, r + 1, optind, &argc, &argv);
1696             continue;
1697         }
1698         optind++;
1699         if (tool) {
1700             if (r[0] == '-' && r[1] == 'v' && r[2] == 0)
1701                 ++s->verbose;
1702             continue;
1703         }
1704 reparse:
1705         if (r[0] != '-' || r[1] == '\0') {
1706             if (r[0] != '@') /* allow "tcc file(s) -run @ args ..." */
1707                 args_parser_add_file(s, r, s->filetype);
1708             if (run) {
1709                 tcc_set_options(s, run);
1710                 arg_start = optind - 1;
1711                 break;
1712             }
1713             continue;
1714         }
1715
1716         /* find option in table */
1717         for(popt = tcc_options; ; ++popt) {
1718             const char *p1 = popt->name;
1719             const char *r1 = r + 1;
1720             if (p1 == NULL)
1721                 tcc_error("invalid option -- '%s'", r);
1722             if (!strstart(p1, &r1))
1723                 continue;
1724             optarg = r1;
1725             if (popt->flags & TCC_OPTION_HAS_ARG) {
1726                 if (*r1 == '\0' && !(popt->flags & TCC_OPTION_NOSEP)) {
1727                     if (optind >= argc)
1728                 arg_err:
1729                         tcc_error("argument to '%s' is missing", r);
1730                     optarg = argv[optind++];
1731                 }
1732             } else if (*r1 != '\0')
1733                 continue;
1734             break;
1735         }
1736
1737         switch(popt->index) {
1738         case TCC_OPTION_HELP:
1739             return OPT_HELP;
1740         case TCC_OPTION_HELP2:
1741             return OPT_HELP2;
1742         case TCC_OPTION_I:
1743             tcc_add_include_path(s, optarg);
1744             break;
1745         case TCC_OPTION_D:
1746             parse_option_D(s, optarg);
1747             break;
1748         case TCC_OPTION_U:
1749             tcc_undefine_symbol(s, optarg);
1750             break;
1751         case TCC_OPTION_L:
1752             tcc_add_library_path(s, optarg);
1753             break;
1754         case TCC_OPTION_B:
1755             /* set tcc utilities path (mainly for tcc development) */
1756             tcc_set_lib_path(s, optarg);
1757             break;
1758         case TCC_OPTION_l:
1759             args_parser_add_file(s, optarg, AFF_TYPE_LIB);
1760             s->nb_libraries++;
1761             break;
1762         case TCC_OPTION_pthread:
1763             parse_option_D(s, "_REENTRANT");
1764             s->option_pthread = 1;
1765             break;
1766         case TCC_OPTION_bench:
1767             s->do_bench = 1;
1768             break;
1769 #ifdef CONFIG_TCC_BACKTRACE
1770         case TCC_OPTION_bt:
1771             tcc_set_num_callers(atoi(optarg));
1772             break;
1773 #endif
1774 #ifdef CONFIG_TCC_BCHECK
1775         case TCC_OPTION_b:
1776             s->do_bounds_check = 1;
1777             s->do_debug = 1;
1778             break;
1779 #endif
1780         case TCC_OPTION_g:
1781             s->do_debug = 1;
1782             break;
1783         case TCC_OPTION_c:
1784             x = TCC_OUTPUT_OBJ;
1785         set_output_type:
1786             if (s->output_type)
1787                 tcc_warning("-%s: overriding compiler action already specified", popt->name);
1788             s->output_type = x;
1789             break;
1790         case TCC_OPTION_d:
1791             if (*optarg == 'D')
1792                 s->dflag = 3;
1793             else if (*optarg == 'M')
1794                 s->dflag = 7;
1795             else if (*optarg == 't')
1796                 s->dflag = 16;
1797             else if (isnum(*optarg))
1798                 g_debug = atoi(optarg);
1799             else
1800                 goto unsupported_option;
1801             break;
1802         case TCC_OPTION_static:
1803             s->static_link = 1;
1804             break;
1805         case TCC_OPTION_std:
1806             /* silently ignore, a current purpose:
1807                allow to use a tcc as a reference compiler for "make test" */
1808             break;
1809         case TCC_OPTION_shared:
1810             x = TCC_OUTPUT_DLL;
1811             goto set_output_type;
1812         case TCC_OPTION_soname:
1813             s->soname = tcc_strdup(optarg);
1814             break;
1815         case TCC_OPTION_o:
1816             if (s->outfile) {
1817                 tcc_warning("multiple -o option");
1818                 tcc_free(s->outfile);
1819             }
1820             s->outfile = tcc_strdup(optarg);
1821             break;
1822         case TCC_OPTION_r:
1823             /* generate a .o merging several output files */
1824             s->option_r = 1;
1825             x = TCC_OUTPUT_OBJ;
1826             goto set_output_type;
1827         case TCC_OPTION_isystem:
1828             tcc_add_sysinclude_path(s, optarg);
1829             break;
1830         case TCC_OPTION_iwithprefix:
1831             snprintf(buf, sizeof buf, "{B}/%s", optarg);
1832             tcc_add_tccinclude_path(s, buf);
1833             break;
1834         case TCC_OPTION_include:
1835             dynarray_add(&s->cmd_include_files,
1836                          &s->nb_cmd_include_files, tcc_strdup(optarg));
1837             break;
1838         case TCC_OPTION_nostdinc:
1839             s->nostdinc = 1;
1840             break;
1841         case TCC_OPTION_nostdlib:
1842             s->nostdlib = 1;
1843             break;
1844         case TCC_OPTION_run:
1845 #ifndef TCC_IS_NATIVE
1846             tcc_error("-run is not available in a cross compiler");
1847 #endif
1848             run = optarg;
1849             x = TCC_OUTPUT_MEMORY;
1850             goto set_output_type;
1851         case TCC_OPTION_v:
1852             do ++s->verbose; while (*optarg++ == 'v');
1853             ++noaction;
1854             break;
1855         case TCC_OPTION_f:
1856             if (set_flag(s, options_f, optarg) < 0)
1857                 goto unsupported_option;
1858             break;
1859 #ifdef TCC_TARGET_ARM
1860         case TCC_OPTION_mfloat_abi:
1861             /* tcc doesn't support soft float yet */
1862             if (!strcmp(optarg, "softfp")) {
1863                 s->float_abi = ARM_SOFTFP_FLOAT;
1864                 tcc_undefine_symbol(s, "__ARM_PCS_VFP");
1865             } else if (!strcmp(optarg, "hard"))
1866                 s->float_abi = ARM_HARD_FLOAT;
1867             else
1868                 tcc_error("unsupported float abi '%s'", optarg);
1869             break;
1870 #endif
1871         case TCC_OPTION_m:
1872             if (set_flag(s, options_m, optarg) < 0) {
1873                 if (x = atoi(optarg), x != 32 && x != 64)
1874                     goto unsupported_option;
1875                 if (PTR_SIZE != x/8)
1876                     return x;
1877                 ++noaction;
1878             }
1879             break;
1880         case TCC_OPTION_W:
1881             if (set_flag(s, options_W, optarg) < 0)
1882                 goto unsupported_option;
1883             break;
1884         case TCC_OPTION_w:
1885             s->warn_none = 1;
1886             break;
1887         case TCC_OPTION_rdynamic:
1888             s->rdynamic = 1;
1889             break;
1890         case TCC_OPTION_Wl:
1891             if (linker_arg.size)
1892                 --linker_arg.size, cstr_ccat(&linker_arg, ',');
1893             cstr_cat(&linker_arg, optarg, 0);
1894             if (tcc_set_linker(s, linker_arg.data))
1895                 cstr_free(&linker_arg);
1896             break;
1897         case TCC_OPTION_Wp:
1898             r = optarg;
1899             goto reparse;
1900         case TCC_OPTION_E:
1901             x = TCC_OUTPUT_PREPROCESS;
1902             goto set_output_type;
1903         case TCC_OPTION_P:
1904             s->Pflag = atoi(optarg) + 1;
1905             break;
1906         case TCC_OPTION_MD:
1907             s->gen_deps = 1;
1908             break;
1909         case TCC_OPTION_MF:
1910             s->deps_outfile = tcc_strdup(optarg);
1911             break;
1912         case TCC_OPTION_dumpversion:
1913             printf ("%s\n", TCC_VERSION);
1914             exit(0);
1915             break;
1916         case TCC_OPTION_x:
1917             if (*optarg == 'c')
1918                 s->filetype = AFF_TYPE_C;
1919             else if (*optarg == 'a')
1920                 s->filetype = AFF_TYPE_ASMPP;
1921             else if (*optarg == 'n')
1922                 s->filetype = AFF_TYPE_NONE;
1923             else
1924                 tcc_warning("unsupported language '%s'", optarg);
1925             break;
1926         case TCC_OPTION_O:
1927             last_o = atoi(optarg);
1928             break;
1929         case TCC_OPTION_print_search_dirs:
1930             x = OPT_PRINT_DIRS;
1931             goto extra_action;
1932         case TCC_OPTION_impdef:
1933             x = OPT_IMPDEF;
1934             goto extra_action;
1935         case TCC_OPTION_ar:
1936             x = OPT_AR;
1937         extra_action:
1938             arg_start = optind - 1;
1939             if (arg_start != noaction)
1940                 tcc_error("cannot parse %s here", r);
1941             tool = x;
1942             break;
1943         case TCC_OPTION_traditional:
1944         case TCC_OPTION_pedantic:
1945         case TCC_OPTION_pipe:
1946         case TCC_OPTION_s:
1947             /* ignored */
1948             break;
1949         default:
1950 unsupported_option:
1951             if (s->warn_unsupported)
1952                 tcc_warning("unsupported option '%s'", r);
1953             break;
1954         }
1955     }
1956     if (last_o > 0)
1957         tcc_define_symbol(s, "__OPTIMIZE__", NULL);
1958     if (linker_arg.size) {
1959         r = linker_arg.data;
1960         goto arg_err;
1961     }
1962     *pargc = argc - arg_start;
1963     *pargv = argv + arg_start;
1964     if (tool)
1965         return tool;
1966     if (optind != noaction)
1967         return 0;
1968     if (s->verbose == 2)
1969         return OPT_PRINT_DIRS;
1970     if (s->verbose)
1971         return OPT_V;
1972     return OPT_HELP;
1973 }
1974
1975 LIBTCCAPI void tcc_set_options(TCCState *s, const char *r)
1976 {
1977     char **argv = NULL;
1978     int argc = 0;
1979     args_parser_make_argv(r, &argc, &argv);
1980     tcc_parse_args(s, &argc, &argv, 0);
1981     dynarray_reset(&argv, &argc);
1982 }
1983
1984 PUB_FUNC void tcc_print_stats(TCCState *s, unsigned total_time)
1985 {
1986     if (total_time < 1)
1987         total_time = 1;
1988     if (total_bytes < 1)
1989         total_bytes = 1;
1990     fprintf(stderr, "* %d idents, %d lines, %d bytes\n"
1991                     "* %0.3f s, %u lines/s, %0.1f MB/s\n",
1992            tok_ident - TOK_IDENT, total_lines, total_bytes,
1993            (double)total_time/1000,
1994            (unsigned)total_lines*1000/total_time,
1995            (double)total_bytes/1000/total_time);
1996 #ifdef MEM_DEBUG
1997     fprintf(stderr, "* %d bytes memory used\n", mem_max_size);
1998 #endif
1999 }