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 /********************************************************/
  36
  37 #ifdef ONE_SOURCE
  38 #include "tccpp.c"
  39 #include "tccgen.c"
  40 #include "tccelf.c"
  41 #include "tccrun.c"
  42 #ifdef TCC_TARGET_I386
  43 #include "i386-gen.c"
  44 #include "i386-link.c"
  45 #endif
  46 #ifdef TCC_TARGET_ARM
  47 #include "arm-gen.c"
  48 #include "arm-link.c"
  49 #endif
  50 #ifdef TCC_TARGET_ARM64
  51 #include "arm64-gen.c"
  52 #include "arm64-link.c"
  53 #endif
  54 #ifdef TCC_TARGET_C67
  55 #include "c67-gen.c"
  56 #include "c67-link.c"
  57 #endif
  58 #ifdef TCC_TARGET_X86_64
  59 #include "x86_64-gen.c"
  60 #include "x86_64-link.c"
  61 #endif
  62 #ifdef CONFIG_TCC_ASM
  63 #include "tccasm.c"
  64 #if defined TCC_TARGET_I386 || defined TCC_TARGET_X86_64
  65 #include "i386-asm.c"
  66 #endif
  67 #endif
  68 #ifdef TCC_TARGET_COFF
  69 #include "tcccoff.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 PUB_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 PUB_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 PUB_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_memstats(int bench)
 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     __attribute__((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_memstats(int bench)
 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     } else if (bench)
 395         fprintf(stderr, "mem_max_size= %d bytes\n", mem_max_size);
 396 }
 397 #endif /* MEM_DEBUG */
 398
 399 #define free(p) use_tcc_free(p)
 400 #define malloc(s) use_tcc_malloc(s)
 401 #define realloc(p, s) use_tcc_realloc(p, s)
 402
 403 /********************************************************/
 404 /* dynarrays */
 405
 406 ST_FUNC void dynarray_add(void ***ptab, int *nb_ptr, void *data)
 407 {
 408     int nb, nb_alloc;
 409     void **pp;
 410
 411     nb = *nb_ptr;
 412     pp = *ptab;
 413     /* every power of two we double array size */
 414     if ((nb & (nb - 1)) == 0) {
 415         if (!nb)
 416             nb_alloc = 1;
 417         else
 418             nb_alloc = nb * 2;
 419         pp = tcc_realloc(pp, nb_alloc * sizeof(void *));
 420         *ptab = pp;
 421     }
 422     pp[nb++] = data;
 423     *nb_ptr = nb;
 424 }
 425
 426 ST_FUNC void dynarray_reset(void *pp, int *n)
 427 {
 428     void **p;
 429     for (p = *(void***)pp; *n; ++p, --*n)
 430         if (*p)
 431             tcc_free(*p);
 432     tcc_free(*(void**)pp);
 433     *(void**)pp = NULL;
 434 }
 435
 436 static void tcc_split_path(TCCState *s, void ***p_ary, int *p_nb_ary, const char *in)
 437 {
 438     const char *p;
 439     do {
 440         int c;
 441         CString str;
 442
 443         cstr_new(&str);
 444         for (p = in; c = *p, c != '\0' && c != PATHSEP; ++p) {
 445             if (c == '{' && p[1] && p[2] == '}') {
 446                 c = p[1], p += 2;
 447                 if (c == 'B')
 448                     cstr_cat(&str, s->tcc_lib_path, -1);
 449             } else {
 450                 cstr_ccat(&str, c);
 451             }
 452         }
 453         if (str.size) {
 454             cstr_ccat(&str, '\0');
 455             dynarray_add(p_ary, p_nb_ary, tcc_strdup(str.data));
 456         }
 457         cstr_free(&str);
 458         in = p+1;
 459     } while (*p);
 460 }
 461
 462 /********************************************************/
 463
 464 static void strcat_vprintf(char *buf, int buf_size, const char *fmt, va_list ap)
 465 {
 466     int len;
 467     len = strlen(buf);
 468     vsnprintf(buf + len, buf_size - len, fmt, ap);
 469 }
 470
 471 static void strcat_printf(char *buf, int buf_size, const char *fmt, ...)
 472 {
 473     va_list ap;
 474     va_start(ap, fmt);
 475     strcat_vprintf(buf, buf_size, fmt, ap);
 476     va_end(ap);
 477 }
 478
 479 static void error1(TCCState *s1, int is_warning, const char *fmt, va_list ap)
 480 {
 481     char buf[2048];
 482     BufferedFile **pf, *f;
 483
 484     buf[0] = '\0';
 485     /* use upper file if inline ":asm:" or token ":paste:" */
 486     for (f = file; f && f->filename[0] == ':'; f = f->prev)
 487      ;
 488     if (f) {
 489         for(pf = s1->include_stack; pf < s1->include_stack_ptr; pf++)
 490             strcat_printf(buf, sizeof(buf), "In file included from %s:%d:\n",
 491                 (*pf)->filename, (*pf)->line_num);
 492         if (f->line_num > 0) {
 493             strcat_printf(buf, sizeof(buf), "%s:%d: ",
 494                 f->filename, f->line_num - !!(tok_flags & TOK_FLAG_BOL));
 495         } else {
 496             strcat_printf(buf, sizeof(buf), "%s: ",
 497                 f->filename);
 498         }
 499     } else {
 500         strcat_printf(buf, sizeof(buf), "tcc: ");
 501     }
 502     if (is_warning)
 503         strcat_printf(buf, sizeof(buf), "warning: ");
 504     else
 505         strcat_printf(buf, sizeof(buf), "error: ");
 506     strcat_vprintf(buf, sizeof(buf), fmt, ap);
 507
 508     if (!s1->error_func) {
 509         /* default case: stderr */
 510         if (s1->ppfp) /* print a newline during tcc -E */
 511             fprintf(s1->ppfp, "\n"), fflush(s1->ppfp);
 512         fprintf(stderr, "%s\n", buf);
 513         fflush(stderr); /* print error/warning now (win32) */
 514     } else {
 515         s1->error_func(s1->error_opaque, buf);
 516     }
 517     if (!is_warning || s1->warn_error)
 518         s1->nb_errors++;
 519 }
 520
 521 LIBTCCAPI void tcc_set_error_func(TCCState *s, void *error_opaque,
 522                         void (*error_func)(void *opaque, const char *msg))
 523 {
 524     s->error_opaque = error_opaque;
 525     s->error_func = error_func;
 526 }
 527
 528 /* error without aborting current compilation */
 529 PUB_FUNC void tcc_error_noabort(const char *fmt, ...)
 530 {
 531     TCCState *s1 = tcc_state;
 532     va_list ap;
 533
 534     va_start(ap, fmt);
 535     error1(s1, 0, fmt, ap);
 536     va_end(ap);
 537 }
 538
 539 PUB_FUNC void tcc_error(const char *fmt, ...)
 540 {
 541     TCCState *s1 = tcc_state;
 542     va_list ap;
 543
 544     va_start(ap, fmt);
 545     error1(s1, 0, fmt, ap);
 546     va_end(ap);
 547     /* better than nothing: in some cases, we accept to handle errors */
 548     if (s1->error_set_jmp_enabled) {
 549         longjmp(s1->error_jmp_buf, 1);
 550     } else {
 551         /* XXX: eliminate this someday */
 552         exit(1);
 553     }
 554 }
 555
 556 PUB_FUNC void tcc_warning(const char *fmt, ...)
 557 {
 558     TCCState *s1 = tcc_state;
 559     va_list ap;
 560
 561     if (s1->warn_none)
 562         return;
 563
 564     va_start(ap, fmt);
 565     error1(s1, 1, fmt, ap);
 566     va_end(ap);
 567 }
 568
 569 /********************************************************/
 570 /* I/O layer */
 571
 572 ST_FUNC void tcc_open_bf(TCCState *s1, const char *filename, int initlen)
 573 {
 574     BufferedFile *bf;
 575     int buflen = initlen ? initlen : IO_BUF_SIZE;
 576
 577     bf = tcc_mallocz(sizeof(BufferedFile) + buflen);
 578     bf->buf_ptr = bf->buffer;
 579     bf->buf_end = bf->buffer + initlen;
 580     bf->buf_end[0] = CH_EOB; /* put eob symbol */
 581     pstrcpy(bf->filename, sizeof(bf->filename), filename);
 582 #ifdef _WIN32
 583     normalize_slashes(bf->filename);
 584 #endif
 585     bf->line_num = 1;
 586     bf->ifdef_stack_ptr = s1->ifdef_stack_ptr;
 587     bf->fd = -1;
 588     bf->prev = file;
 589     file = bf;
 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     file = bf->prev;
 600     tcc_free(bf);
 601 }
 602
 603 ST_FUNC int tcc_open(TCCState *s1, const char *filename)
 604 {
 605     int fd;
 606     if (strcmp(filename, "-") == 0)
 607         fd = 0, filename = "<stdin>";
 608     else
 609         fd = open(filename, O_RDONLY | O_BINARY);
 610     if ((s1->verbose == 2 && fd >= 0) || s1->verbose == 3)
 611         printf("%s %*s%s\n", fd < 0 ? "nf":"->",
 612                (int)(s1->include_stack_ptr - s1->include_stack), "", filename);
 613     if (fd < 0)
 614         return -1;
 615
 616     tcc_open_bf(s1, filename, 0);
 617     file->fd = fd;
 618     return fd;
 619 }
 620
 621 /* compile the C file opened in 'file'. Return non zero if errors. */
 622 static int tcc_compile(TCCState *s1)
 623 {
 624     Sym *define_start;
 625
 626     preprocess_start(s1);
 627     define_start = define_stack;
 628
 629     if (setjmp(s1->error_jmp_buf) == 0) {
 630         s1->nb_errors = 0;
 631         s1->error_set_jmp_enabled = 1;
 632
 633         tccgen_start(s1);
 634 #ifdef INC_DEBUG
 635         printf("%s: **** new file\n", file->filename);
 636 #endif
 637         ch = file->buf_ptr[0];
 638         tok_flags = TOK_FLAG_BOL | TOK_FLAG_BOF;
 639         parse_flags = PARSE_FLAG_PREPROCESS | PARSE_FLAG_TOK_NUM | PARSE_FLAG_TOK_STR;
 640         next();
 641         decl(VT_CONST);
 642         if (tok != TOK_EOF)
 643             expect("declaration");
 644         /* reset define stack, but keep -D and built-ins */
 645         free_defines(define_start);
 646         tccgen_end(s1);
 647     }
 648     s1->error_set_jmp_enabled = 0;
 649
 650     free_inline_functions(s1);
 651     sym_pop(&global_stack, NULL, 0);
 652     sym_pop(&local_stack, NULL, 0);
 653     return s1->nb_errors != 0 ? -1 : 0;
 654 }
 655
 656 LIBTCCAPI int tcc_compile_string(TCCState *s, const char *str)
 657 {
 658     int len, ret;
 659
 660     len = strlen(str);
 661     tcc_open_bf(s, "<string>", len);
 662     memcpy(file->buffer, str, len);
 663     ret = tcc_compile(s);
 664     tcc_close();
 665     return ret;
 666 }
 667
 668 /* define a preprocessor symbol. A value can also be provided with the '=' operator */
 669 LIBTCCAPI void tcc_define_symbol(TCCState *s1, const char *sym, const char *value)
 670 {
 671     int len1, len2;
 672     /* default value */
 673     if (!value)
 674         value = "1";
 675     len1 = strlen(sym);
 676     len2 = strlen(value);
 677
 678     /* init file structure */
 679     tcc_open_bf(s1, "<define>", len1 + len2 + 1);
 680     memcpy(file->buffer, sym, len1);
 681     file->buffer[len1] = ' ';
 682     memcpy(file->buffer + len1 + 1, value, len2);
 683
 684     /* parse with define parser */
 685     ch = file->buf_ptr[0];
 686     next_nomacro();
 687     parse_define();
 688
 689     tcc_close();
 690 }
 691
 692 /* undefine a preprocessor symbol */
 693 LIBTCCAPI void tcc_undefine_symbol(TCCState *s1, const char *sym)
 694 {
 695     TokenSym *ts;
 696     Sym *s;
 697     ts = tok_alloc(sym, strlen(sym));
 698     s = define_find(ts->tok);
 699     /* undefine symbol by putting an invalid name */
 700     if (s)
 701         define_undef(s);
 702 }
 703
 704 /* cleanup all static data used during compilation */
 705 static void tcc_cleanup(void)
 706 {
 707     if (NULL == tcc_state)
 708         return;
 709     tccpp_delete(tcc_state);
 710     tcc_state = NULL;
 711     /* free sym_pools */
 712     dynarray_reset(&sym_pools, &nb_sym_pools);
 713     /* reset symbol stack */
 714     sym_free_first = NULL;
 715 }
 716
 717 LIBTCCAPI TCCState *tcc_new(void)
 718 {
 719     TCCState *s;
 720
 721     tcc_cleanup();
 722
 723     s = tcc_mallocz(sizeof(TCCState));
 724     if (!s)
 725         return NULL;
 726     tcc_state = s;
 727
 728     s->alacarte_link = 1;
 729     s->nocommon = 1;
 730     s->warn_implicit_function_declaration = 1;
 731
 732 #ifdef CHAR_IS_UNSIGNED
 733     s->char_is_unsigned = 1;
 734 #endif
 735 #ifdef TCC_TARGET_I386
 736     s->seg_size = 32;
 737 #endif
 738 #ifdef TCC_IS_NATIVE
 739     s->runtime_main = "main";
 740 #endif
 741     /* enable this if you want symbols with leading underscore on windows: */
 742 #if 0 /* def TCC_TARGET_PE */
 743     s->leading_underscore = 1;
 744 #endif
 745 #ifdef _WIN32
 746     tcc_set_lib_path_w32(s);
 747 #else
 748     tcc_set_lib_path(s, CONFIG_TCCDIR);
 749 #endif
 750     tccelf_new(s);
 751     tccpp_new(s);
 752
 753     /* we add dummy defines for some special macros to speed up tests
 754        and to have working defined() */
 755     define_push(TOK___LINE__, MACRO_OBJ, NULL, NULL);
 756     define_push(TOK___FILE__, MACRO_OBJ, NULL, NULL);
 757     define_push(TOK___DATE__, MACRO_OBJ, NULL, NULL);
 758     define_push(TOK___TIME__, MACRO_OBJ, NULL, NULL);
 759     {
 760         /* define __TINYC__ 92X  */
 761         char buffer[32]; int a,b,c;
 762         sscanf(TCC_VERSION, "%d.%d.%d", &a, &b, &c);
 763         sprintf(buffer, "%d", a*10000 + b*100 + c);
 764         tcc_define_symbol(s, "__TINYC__", buffer);
 765     }
 766
 767     /* standard defines */
 768     tcc_define_symbol(s, "__STDC__", NULL);
 769     tcc_define_symbol(s, "__STDC_VERSION__", "199901L");
 770     tcc_define_symbol(s, "__STDC_HOSTED__", NULL);
 771
 772     /* target defines */
 773 #if defined(TCC_TARGET_I386)
 774     tcc_define_symbol(s, "__i386__", NULL);
 775     tcc_define_symbol(s, "__i386", NULL);
 776     tcc_define_symbol(s, "i386", NULL);
 777 #elif defined(TCC_TARGET_X86_64)
 778     tcc_define_symbol(s, "__x86_64__", NULL);
 779 #elif defined(TCC_TARGET_ARM)
 780     tcc_define_symbol(s, "__ARM_ARCH_4__", NULL);
 781     tcc_define_symbol(s, "__arm_elf__", NULL);
 782     tcc_define_symbol(s, "__arm_elf", NULL);
 783     tcc_define_symbol(s, "arm_elf", NULL);
 784     tcc_define_symbol(s, "__arm__", NULL);
 785     tcc_define_symbol(s, "__arm", NULL);
 786     tcc_define_symbol(s, "arm", NULL);
 787     tcc_define_symbol(s, "__APCS_32__", NULL);
 788     tcc_define_symbol(s, "__ARMEL__", NULL);
 789 #if defined(TCC_ARM_EABI)
 790     tcc_define_symbol(s, "__ARM_EABI__", NULL);
 791 #endif
 792 #if defined(TCC_ARM_HARDFLOAT)
 793     s->float_abi = ARM_HARD_FLOAT;
 794     tcc_define_symbol(s, "__ARM_PCS_VFP", NULL);
 795 #else
 796     s->float_abi = ARM_SOFTFP_FLOAT;
 797 #endif
 798 #elif defined(TCC_TARGET_ARM64)
 799     tcc_define_symbol(s, "__aarch64__", NULL);
 800 #endif
 801
 802 #ifdef TCC_TARGET_PE
 803     tcc_define_symbol(s, "_WIN32", NULL);
 804 # ifdef TCC_TARGET_X86_64
 805     tcc_define_symbol(s, "_WIN64", NULL);
 806 # endif
 807 #else
 808     tcc_define_symbol(s, "__unix__", NULL);
 809     tcc_define_symbol(s, "__unix", NULL);
 810     tcc_define_symbol(s, "unix", NULL);
 811 # if defined(__linux__)
 812     tcc_define_symbol(s, "__linux__", NULL);
 813     tcc_define_symbol(s, "__linux", NULL);
 814 # endif
 815 # if defined(__FreeBSD__)
 816     tcc_define_symbol(s, "__FreeBSD__", "__FreeBSD__");
 817     /* No 'Thread Storage Local' on FreeBSD with tcc */
 818     tcc_define_symbol(s, "__NO_TLS", NULL);
 819 # endif
 820 # if defined(__FreeBSD_kernel__)
 821     tcc_define_symbol(s, "__FreeBSD_kernel__", NULL);
 822 # endif
 823 #endif
 824 # if defined(__NetBSD__)
 825     tcc_define_symbol(s, "__NetBSD__", "__NetBSD__");
 826 # endif
 827 # if defined(__OpenBSD__)
 828     tcc_define_symbol(s, "__OpenBSD__", "__OpenBSD__");
 829 # endif
 830
 831     /* TinyCC & gcc defines */
 832 #if defined(TCC_TARGET_PE) && defined(TCC_TARGET_X86_64)
 833     /* 64bit Windows. */
 834     tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned long long");
 835     tcc_define_symbol(s, "__PTRDIFF_TYPE__", "long long");
 836     tcc_define_symbol(s, "__LLP64__", NULL);
 837 #elif defined(TCC_TARGET_X86_64) || defined(TCC_TARGET_ARM64)
 838     /* Other 64bit systems. */
 839     tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned long");
 840     tcc_define_symbol(s, "__PTRDIFF_TYPE__", "long");
 841     tcc_define_symbol(s, "__LP64__", NULL);
 842 #else
 843     /* Other 32bit systems. */
 844     tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned long");
 845     tcc_define_symbol(s, "__PTRDIFF_TYPE__", "long");
 846     tcc_define_symbol(s, "__ILP32__", NULL);
 847 #endif
 848
 849 #ifdef TCC_TARGET_PE
 850     tcc_define_symbol(s, "__WCHAR_TYPE__", "unsigned short");
 851     tcc_define_symbol(s, "__WINT_TYPE__", "unsigned short");
 852 #else
 853     tcc_define_symbol(s, "__WCHAR_TYPE__", "int");
 854     /* wint_t is unsigned int by default, but (signed) int on BSDs
 855        and unsigned short on windows.  Other OSes might have still
 856        other conventions, sigh.  */
 857 # if defined(__FreeBSD__) || defined (__FreeBSD_kernel__) \
 858   || defined(__NetBSD__) || defined(__OpenBSD__)
 859     tcc_define_symbol(s, "__WINT_TYPE__", "int");
 860 #  ifdef __FreeBSD__
 861     /* define __GNUC__ to have some useful stuff from sys/cdefs.h
 862        that are unconditionally used in FreeBSDs other system headers :/ */
 863     tcc_define_symbol(s, "__GNUC__", "2");
 864     tcc_define_symbol(s, "__GNUC_MINOR__", "7");
 865     tcc_define_symbol(s, "__builtin_alloca", "alloca");
 866 #  endif
 867 # else
 868     tcc_define_symbol(s, "__WINT_TYPE__", "unsigned int");
 869     /* glibc defines */
 870     tcc_define_symbol(s, "__REDIRECT(name, proto, alias)",
 871         "name proto __asm__ (#alias)");
 872     tcc_define_symbol(s, "__REDIRECT_NTH(name, proto, alias)",
 873         "name proto __asm__ (#alias) __THROW");
 874 # endif
 875 #endif /* ndef TCC_TARGET_PE */
 876
 877     /* Some GCC builtins that are simple to express as macros.  */
 878     tcc_define_symbol(s, "__builtin_extract_return_addr(x)", "x");
 879
 880     return s;
 881 }
 882
 883 LIBTCCAPI void tcc_delete(TCCState *s1)
 884 {
 885     int bench = s1->do_bench;
 886
 887     tcc_cleanup();
 888
 889     /* free sections */
 890     tccelf_delete(s1);
 891
 892     /* free library paths */
 893     dynarray_reset(&s1->library_paths, &s1->nb_library_paths);
 894     dynarray_reset(&s1->crt_paths, &s1->nb_crt_paths);
 895
 896     /* free include paths */
 897     dynarray_reset(&s1->cached_includes, &s1->nb_cached_includes);
 898     dynarray_reset(&s1->include_paths, &s1->nb_include_paths);
 899     dynarray_reset(&s1->sysinclude_paths, &s1->nb_sysinclude_paths);
 900
 901     tcc_free(s1->tcc_lib_path);
 902     tcc_free(s1->soname);
 903     tcc_free(s1->rpath);
 904     tcc_free(s1->init_symbol);
 905     tcc_free(s1->fini_symbol);
 906     tcc_free(s1->outfile);
 907     tcc_free(s1->deps_outfile);
 908     dynarray_reset(&s1->files, &s1->nb_files);
 909     dynarray_reset(&s1->target_deps, &s1->nb_target_deps);
 910     dynarray_reset(&s1->pragma_libs, &s1->nb_pragma_libs);
 911
 912 #ifdef TCC_IS_NATIVE
 913     /* free runtime memory */
 914     tcc_run_free(s1);
 915 #endif
 916
 917     tcc_free(s1);
 918     tcc_memstats(bench);
 919 }
 920
 921 LIBTCCAPI int tcc_set_output_type(TCCState *s, int output_type)
 922 {
 923     s->output_type = output_type;
 924
 925     /* always elf for objects */
 926     if (output_type == TCC_OUTPUT_OBJ)
 927         s->output_format = TCC_OUTPUT_FORMAT_ELF;
 928
 929     if (s->char_is_unsigned)
 930         tcc_define_symbol(s, "__CHAR_UNSIGNED__", NULL);
 931
 932     if (!s->nostdinc) {
 933         /* default include paths */
 934         /* -isystem paths have already been handled */
 935         tcc_add_sysinclude_path(s, CONFIG_TCC_SYSINCLUDEPATHS);
 936     }
 937
 938 #ifdef CONFIG_TCC_BCHECK
 939     if (s->do_bounds_check) {
 940         /* if bound checking, then add corresponding sections */
 941         tccelf_bounds_new(s);
 942         /* define symbol */
 943         tcc_define_symbol(s, "__BOUNDS_CHECKING_ON", NULL);
 944     }
 945 #endif
 946     if (s->do_debug) {
 947         /* add debug sections */
 948         tccelf_stab_new(s);
 949     }
 950
 951     tcc_add_library_path(s, CONFIG_TCC_LIBPATHS);
 952
 953 #ifdef TCC_TARGET_PE
 954 # ifdef _WIN32
 955     if (!s->nostdlib && output_type != TCC_OUTPUT_OBJ)
 956         tcc_add_systemdir(s);
 957 # endif
 958 #else
 959     /* paths for crt objects */
 960     tcc_split_path(s, (void ***)&s->crt_paths, &s->nb_crt_paths, CONFIG_TCC_CRTPREFIX);
 961     /* add libc crt1/crti objects */
 962     if ((output_type == TCC_OUTPUT_EXE || output_type == TCC_OUTPUT_DLL) &&
 963         !s->nostdlib) {
 964         if (output_type != TCC_OUTPUT_DLL)
 965             tcc_add_crt(s, "crt1.o");
 966         tcc_add_crt(s, "crti.o");
 967     }
 968 #endif
 969     return 0;
 970 }
 971
 972 LIBTCCAPI int tcc_add_include_path(TCCState *s, const char *pathname)
 973 {
 974     tcc_split_path(s, (void ***)&s->include_paths, &s->nb_include_paths, pathname);
 975     return 0;
 976 }
 977
 978 LIBTCCAPI int tcc_add_sysinclude_path(TCCState *s, const char *pathname)
 979 {
 980     tcc_split_path(s, (void ***)&s->sysinclude_paths, &s->nb_sysinclude_paths, pathname);
 981     return 0;
 982 }
 983
 984 ST_FUNC int tcc_add_file_internal(TCCState *s1, const char *filename, int flags)
 985 {
 986     int ret, filetype;
 987
 988     filetype = flags & 0x0F;
 989     if (filetype == 0) {
 990         /* use a file extension to detect a filetype */
 991         const char *ext = tcc_fileextension(filename);
 992         if (ext[0]) {
 993             ext++;
 994             if (!strcmp(ext, "S"))
 995                 filetype = AFF_TYPE_ASMPP;
 996             else if (!strcmp(ext, "s"))
 997                 filetype = AFF_TYPE_ASM;
 998             else if (!PATHCMP(ext, "c") || !PATHCMP(ext, "i"))
 999                 filetype = AFF_TYPE_C;
1000             else
1001                 filetype = AFF_TYPE_BIN;
1002         } else {
1003             filetype = AFF_TYPE_C;
1004         }
1005     }
1006
1007     /* open the file */
1008     ret = tcc_open(s1, filename);
1009     if (ret < 0) {
1010         if (flags & AFF_PRINT_ERROR)
1011             tcc_error_noabort("file '%s' not found", filename);
1012         return ret;
1013     }
1014
1015     /* update target deps */
1016     dynarray_add((void ***)&s1->target_deps, &s1->nb_target_deps,
1017             tcc_strdup(filename));
1018
1019     parse_flags = 0;
1020     /* if .S file, define __ASSEMBLER__ like gcc does */
1021     if (filetype == AFF_TYPE_ASM || filetype == AFF_TYPE_ASMPP) {
1022         tcc_define_symbol(s1, "__ASSEMBLER__", NULL);
1023         parse_flags = PARSE_FLAG_ASM_FILE;
1024     }
1025
1026     if (flags & AFF_PREPROCESS) {
1027         ret = tcc_preprocess(s1);
1028     } else if (filetype == AFF_TYPE_C) {
1029         ret = tcc_compile(s1);
1030 #ifdef CONFIG_TCC_ASM
1031     } else if (filetype == AFF_TYPE_ASMPP) {
1032         /* non preprocessed assembler */
1033         ret = tcc_assemble(s1, 1);
1034     } else if (filetype == AFF_TYPE_ASM) {
1035         /* preprocessed assembler */
1036         ret = tcc_assemble(s1, 0);
1037 #endif
1038     } else {
1039         ElfW(Ehdr) ehdr;
1040         int fd, obj_type;
1041
1042         fd = file->fd;
1043         obj_type = tcc_object_type(fd, &ehdr);
1044         lseek(fd, 0, SEEK_SET);
1045
1046         /* do not display line number if error */
1047         file->line_num = 0;
1048
1049         switch (obj_type) {
1050         case AFF_BINTYPE_REL:
1051             ret = tcc_load_object_file(s1, fd, 0);
1052             break;
1053 #ifndef TCC_TARGET_PE
1054         case AFF_BINTYPE_DYN:
1055             if (s1->output_type == TCC_OUTPUT_MEMORY) {
1056                 ret = 0;
1057 #ifdef TCC_IS_NATIVE
1058                 if (NULL == dlopen(filename, RTLD_GLOBAL | RTLD_LAZY))
1059                     ret = -1;
1060 #endif
1061             } else {
1062                 ret = tcc_load_dll(s1, fd, filename,
1063                                    (flags & AFF_REFERENCED_DLL) != 0);
1064             }
1065             break;
1066 #endif
1067         case AFF_BINTYPE_AR:
1068             ret = tcc_load_archive(s1, fd);
1069             break;
1070 #ifdef TCC_TARGET_COFF
1071         case AFF_BINTYPE_C67:
1072             ret = tcc_load_coff(s1, fd);
1073             break;
1074 #endif
1075         default:
1076 #ifdef TCC_TARGET_PE
1077             ret = pe_load_file(s1, filename, fd);
1078 #else
1079             /* as GNU ld, consider it is an ld script if not recognized */
1080             ret = tcc_load_ldscript(s1);
1081 #endif
1082             if (ret < 0)
1083                 tcc_error_noabort("unrecognized file type");
1084             break;
1085         }
1086     }
1087     tcc_close();
1088     return ret;
1089 }
1090
1091 LIBTCCAPI int tcc_add_file(TCCState *s, const char *filename)
1092 {
1093     if (s->output_type == TCC_OUTPUT_PREPROCESS)
1094         return tcc_add_file_internal(s, filename, AFF_PRINT_ERROR | AFF_PREPROCESS | s->filetype);
1095     else
1096         return tcc_add_file_internal(s, filename, AFF_PRINT_ERROR | s->filetype);
1097 }
1098
1099 LIBTCCAPI int tcc_add_library_path(TCCState *s, const char *pathname)
1100 {
1101     tcc_split_path(s, (void ***)&s->library_paths, &s->nb_library_paths, pathname);
1102     return 0;
1103 }
1104
1105 static int tcc_add_library_internal(TCCState *s, const char *fmt,
1106     const char *filename, int flags, char **paths, int nb_paths)
1107 {
1108     char buf[1024];
1109     int i;
1110
1111     for(i = 0; i < nb_paths; i++) {
1112         snprintf(buf, sizeof(buf), fmt, paths[i], filename);
1113         if (tcc_add_file_internal(s, buf, flags | AFF_TYPE_BIN) == 0)
1114             return 0;
1115     }
1116     return -1;
1117 }
1118
1119 #ifndef TCC_TARGET_PE
1120 /* find and load a dll. Return non zero if not found */
1121 /* XXX: add '-rpath' option support ? */
1122 ST_FUNC int tcc_add_dll(TCCState *s, const char *filename, int flags)
1123 {
1124     return tcc_add_library_internal(s, "%s/%s", filename, flags,
1125         s->library_paths, s->nb_library_paths);
1126 }
1127 #endif
1128
1129 ST_FUNC int tcc_add_crt(TCCState *s, const char *filename)
1130 {
1131     if (-1 == tcc_add_library_internal(s, "%s/%s",
1132         filename, 0, s->crt_paths, s->nb_crt_paths))
1133         tcc_error_noabort("file '%s' not found", filename);
1134     return 0;
1135 }
1136
1137 /* the library name is the same as the argument of the '-l' option */
1138 LIBTCCAPI int tcc_add_library(TCCState *s, const char *libraryname)
1139 {
1140 #ifdef TCC_TARGET_PE
1141     const char *libs[] = { "%s/%s.def", "%s/lib%s.def", "%s/%s.dll", "%s/lib%s.dll", "%s/lib%s.a", NULL };
1142     const char **pp = s->static_link ? libs + 4 : libs;
1143 #else
1144     const char *libs[] = { "%s/lib%s.so", "%s/lib%s.a", NULL };
1145     const char **pp = s->static_link ? libs + 1 : libs;
1146 #endif
1147     while (*pp) {
1148         if (0 == tcc_add_library_internal(s, *pp,
1149             libraryname, 0, s->library_paths, s->nb_library_paths))
1150             return 0;
1151         ++pp;
1152     }
1153     return -1;
1154 }
1155
1156 PUB_FUNC int tcc_add_library_err(TCCState *s, const char *libname)
1157 {
1158     int ret = tcc_add_library(s, libname);
1159     if (ret < 0)
1160         tcc_error_noabort("library 'lib%s' not found", libname);
1161     return ret;
1162 }
1163
1164 /* habdle #pragma comment(lib,) */
1165 ST_FUNC void tcc_add_pragma_libs(TCCState *s1)
1166 {
1167     int i;
1168     for (i = 0; i < s1->nb_pragma_libs; i++)
1169         tcc_add_library_err(s1, s1->pragma_libs[i]);
1170 }
1171
1172 LIBTCCAPI int tcc_add_symbol(TCCState *s, const char *name, const void *val)
1173 {
1174 #ifdef TCC_TARGET_PE
1175     /* On x86_64 'val' might not be reachable with a 32bit offset.
1176        So it is handled here as if it were in a DLL. */
1177     pe_putimport(s, 0, name, (uintptr_t)val);
1178 #else
1179     set_elf_sym(symtab_section, (uintptr_t)val, 0,
1180         ELFW(ST_INFO)(STB_GLOBAL, STT_NOTYPE), 0,
1181         SHN_ABS, name);
1182 #endif
1183     return 0;
1184 }
1185
1186 LIBTCCAPI void tcc_set_lib_path(TCCState *s, const char *path)
1187 {
1188     tcc_free(s->tcc_lib_path);
1189     s->tcc_lib_path = tcc_strdup(path);
1190 }
1191
1192 #define WD_ALL    0x0001 /* warning is activated when using -Wall */
1193 #define FD_INVERT 0x0002 /* invert value before storing */
1194
1195 typedef struct FlagDef {
1196     uint16_t offset;
1197     uint16_t flags;
1198     const char *name;
1199 } FlagDef;
1200
1201 static int no_flag(const char **pp)
1202 {
1203     const char *p = *pp;
1204     if (*p != 'n' || *++p != 'o' || *++p != '-')
1205         return 0;
1206     *pp = p + 1;
1207     return 1;
1208 }
1209
1210 ST_FUNC int set_flag(TCCState *s, const FlagDef *flags, const char *name)
1211 {
1212     int value, ret;
1213     const FlagDef *p;
1214     const char *r;
1215
1216     value = 1;
1217     r = name;
1218     if (no_flag(&r))
1219         value = 0;
1220
1221     for (ret = -1, p = flags; p->name; ++p) {
1222         if (ret) {
1223             if (strcmp(r, p->name))
1224                 continue;
1225         } else {
1226             if (0 == (p->flags & WD_ALL))
1227                 continue;
1228         }
1229         if (p->offset) {
1230             *(int*)((char *)s + p->offset) =
1231                 p->flags & FD_INVERT ? !value : value;
1232             if (ret)
1233                 return 0;
1234         } else {
1235             ret = 0;
1236         }
1237     }
1238     return ret;
1239 }
1240
1241 static int strstart(const char *val, const char **str)
1242 {
1243     const char *p, *q;
1244     p = *str;
1245     q = val;
1246     while (*q) {
1247         if (*p != *q)
1248             return 0;
1249         p++;
1250         q++;
1251     }
1252     *str = p;
1253     return 1;
1254 }
1255
1256 /* Like strstart, but automatically takes into account that ld options can
1257  *
1258  * - start with double or single dash (e.g. '--soname' or '-soname')
1259  * - arguments can be given as separate or after '=' (e.g. '-Wl,-soname,x.so'
1260  *   or '-Wl,-soname=x.so')
1261  *
1262  * you provide `val` always in 'option[=]' form (no leading -)
1263  */
1264 static int link_option(const char *str, const char *val, const char **ptr)
1265 {
1266     const char *p, *q;
1267     int ret;
1268
1269     /* there should be 1 or 2 dashes */
1270     if (*str++ != '-')
1271         return 0;
1272     if (*str == '-')
1273         str++;
1274
1275     /* then str & val should match (potentialy up to '=') */
1276     p = str;
1277     q = val;
1278
1279     ret = 1;
1280     if (q[0] == '?') {
1281         ++q;
1282         if (no_flag(&p))
1283             ret = -1;
1284     }
1285
1286     while (*q != '\0' && *q != '=') {
1287         if (*p != *q)
1288             return 0;
1289         p++;
1290         q++;
1291     }
1292
1293     /* '=' near eos means ',' or '=' is ok */
1294     if (*q == '=') {
1295         if (*p == 0)
1296             *ptr = p;
1297         if (*p != ',' && *p != '=')
1298             return 0;
1299         p++;
1300     }
1301     *ptr = p;
1302     return ret;
1303 }
1304
1305 static const char *skip_linker_arg(const char **str)
1306 {
1307     const char *s1 = *str;
1308     const char *s2 = strchr(s1, ',');
1309     *str = s2 ? s2++ : (s2 = s1 + strlen(s1));
1310     return s2;
1311 }
1312
1313 static char *copy_linker_arg(const char *p)
1314 {
1315     const char *q = p;
1316     skip_linker_arg(&q);
1317     return pstrncpy(tcc_malloc(q - p + 1), p, q - p);
1318 }
1319
1320 /* set linker options */
1321 static int tcc_set_linker(TCCState *s, const char *option)
1322 {
1323     while (*option) {
1324
1325         const char *p = NULL;
1326         char *end = NULL;
1327         int ignoring = 0;
1328         int ret;
1329
1330         if (link_option(option, "Bsymbolic", &p)) {
1331             s->symbolic = 1;
1332         } else if (link_option(option, "nostdlib", &p)) {
1333             s->nostdlib = 1;
1334         } else if (link_option(option, "fini=", &p)) {
1335             s->fini_symbol = copy_linker_arg(p);
1336             ignoring = 1;
1337         } else if (link_option(option, "image-base=", &p)
1338                 || link_option(option, "Ttext=", &p)) {
1339             s->text_addr = strtoull(p, &end, 16);
1340             s->has_text_addr = 1;
1341         } else if (link_option(option, "init=", &p)) {
1342             s->init_symbol = copy_linker_arg(p);
1343             ignoring = 1;
1344         } else if (link_option(option, "oformat=", &p)) {
1345 #if defined(TCC_TARGET_PE)
1346             if (strstart("pe-", &p)) {
1347 #elif defined(TCC_TARGET_ARM64) || defined(TCC_TARGET_X86_64)
1348             if (strstart("elf64-", &p)) {
1349 #else
1350             if (strstart("elf32-", &p)) {
1351 #endif
1352                 s->output_format = TCC_OUTPUT_FORMAT_ELF;
1353             } else if (!strcmp(p, "binary")) {
1354                 s->output_format = TCC_OUTPUT_FORMAT_BINARY;
1355 #ifdef TCC_TARGET_COFF
1356             } else if (!strcmp(p, "coff")) {
1357                 s->output_format = TCC_OUTPUT_FORMAT_COFF;
1358 #endif
1359             } else
1360                 goto err;
1361
1362         } else if (link_option(option, "as-needed", &p)) {
1363             ignoring = 1;
1364         } else if (link_option(option, "O", &p)) {
1365             ignoring = 1;
1366         } else if (link_option(option, "rpath=", &p)) {
1367             s->rpath = copy_linker_arg(p);
1368         } else if (link_option(option, "section-alignment=", &p)) {
1369             s->section_align = strtoul(p, &end, 16);
1370         } else if (link_option(option, "soname=", &p)) {
1371             s->soname = copy_linker_arg(p);
1372 #ifdef TCC_TARGET_PE
1373         } else if (link_option(option, "large-address-aware", &p)) {
1374             s->pe_characteristics |= 0x20;
1375         } else if (link_option(option, "file-alignment=", &p)) {
1376             s->pe_file_align = strtoul(p, &end, 16);
1377         } else if (link_option(option, "stack=", &p)) {
1378             s->pe_stack_size = strtoul(p, &end, 10);
1379         } else if (link_option(option, "subsystem=", &p)) {
1380 #if defined(TCC_TARGET_I386) || defined(TCC_TARGET_X86_64)
1381             if (!strcmp(p, "native")) {
1382                 s->pe_subsystem = 1;
1383             } else if (!strcmp(p, "console")) {
1384                 s->pe_subsystem = 3;
1385             } else if (!strcmp(p, "gui")) {
1386                 s->pe_subsystem = 2;
1387             } else if (!strcmp(p, "posix")) {
1388                 s->pe_subsystem = 7;
1389             } else if (!strcmp(p, "efiapp")) {
1390                 s->pe_subsystem = 10;
1391             } else if (!strcmp(p, "efiboot")) {
1392                 s->pe_subsystem = 11;
1393             } else if (!strcmp(p, "efiruntime")) {
1394                 s->pe_subsystem = 12;
1395             } else if (!strcmp(p, "efirom")) {
1396                 s->pe_subsystem = 13;
1397 #elif defined(TCC_TARGET_ARM)
1398             if (!strcmp(p, "wince")) {
1399                 s->pe_subsystem = 9;
1400 #endif
1401             } else
1402                 goto err;
1403 #endif
1404         } else if (ret = link_option(option, "?whole-archive", &p), ret) {
1405             s->alacarte_link = ret < 0;
1406         } else if (p) {
1407             return 0;
1408         } else {
1409     err:
1410             tcc_error("unsupported linker option '%s'", option);
1411         }
1412
1413         if (ignoring && s->warn_unsupported)
1414             tcc_warning("unsupported linker option '%s'", option);
1415
1416         option = skip_linker_arg(&p);
1417     }
1418     return 1;
1419 }
1420
1421 typedef struct TCCOption {
1422     const char *name;
1423     uint16_t index;
1424     uint16_t flags;
1425 } TCCOption;
1426
1427 enum {
1428     TCC_OPTION_HELP,
1429     TCC_OPTION_I,
1430     TCC_OPTION_D,
1431     TCC_OPTION_U,
1432     TCC_OPTION_P,
1433     TCC_OPTION_L,
1434     TCC_OPTION_B,
1435     TCC_OPTION_l,
1436     TCC_OPTION_bench,
1437     TCC_OPTION_bt,
1438     TCC_OPTION_b,
1439     TCC_OPTION_g,
1440     TCC_OPTION_c,
1441     TCC_OPTION_dumpversion,
1442     TCC_OPTION_d,
1443     TCC_OPTION_static,
1444     TCC_OPTION_std,
1445     TCC_OPTION_shared,
1446     TCC_OPTION_soname,
1447     TCC_OPTION_o,
1448     TCC_OPTION_r,
1449     TCC_OPTION_s,
1450     TCC_OPTION_traditional,
1451     TCC_OPTION_Wl,
1452     TCC_OPTION_Wp,
1453     TCC_OPTION_W,
1454     TCC_OPTION_O,
1455     TCC_OPTION_mfloat_abi,
1456     TCC_OPTION_m,
1457     TCC_OPTION_f,
1458     TCC_OPTION_isystem,
1459     TCC_OPTION_iwithprefix,
1460     TCC_OPTION_include,
1461     TCC_OPTION_nostdinc,
1462     TCC_OPTION_nostdlib,
1463     TCC_OPTION_print_search_dirs,
1464     TCC_OPTION_rdynamic,
1465     TCC_OPTION_param,
1466     TCC_OPTION_pedantic,
1467     TCC_OPTION_pthread,
1468     TCC_OPTION_run,
1469     TCC_OPTION_v,
1470     TCC_OPTION_w,
1471     TCC_OPTION_pipe,
1472     TCC_OPTION_E,
1473     TCC_OPTION_MD,
1474     TCC_OPTION_MF,
1475     TCC_OPTION_x
1476 };
1477
1478 #define TCC_OPTION_HAS_ARG 0x0001
1479 #define TCC_OPTION_NOSEP   0x0002 /* cannot have space before option and arg */
1480
1481 static const TCCOption tcc_options[] = {
1482     { "h", TCC_OPTION_HELP, 0 },
1483     { "-help", TCC_OPTION_HELP, 0 },
1484     { "?", TCC_OPTION_HELP, 0 },
1485     { "I", TCC_OPTION_I, TCC_OPTION_HAS_ARG },
1486     { "D", TCC_OPTION_D, TCC_OPTION_HAS_ARG },
1487     { "U", TCC_OPTION_U, TCC_OPTION_HAS_ARG },
1488     { "P", TCC_OPTION_P, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1489     { "L", TCC_OPTION_L, TCC_OPTION_HAS_ARG },
1490     { "B", TCC_OPTION_B, TCC_OPTION_HAS_ARG },
1491     { "l", TCC_OPTION_l, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1492     { "bench", TCC_OPTION_bench, 0 },
1493 #ifdef CONFIG_TCC_BACKTRACE
1494     { "bt", TCC_OPTION_bt, TCC_OPTION_HAS_ARG },
1495 #endif
1496 #ifdef CONFIG_TCC_BCHECK
1497     { "b", TCC_OPTION_b, 0 },
1498 #endif
1499     { "g", TCC_OPTION_g, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1500     { "c", TCC_OPTION_c, 0 },
1501     { "dumpversion", TCC_OPTION_dumpversion, 0},
1502     { "d", TCC_OPTION_d, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1503     { "static", TCC_OPTION_static, 0 },
1504     { "std", TCC_OPTION_std, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1505     { "shared", TCC_OPTION_shared, 0 },
1506     { "soname", TCC_OPTION_soname, TCC_OPTION_HAS_ARG },
1507     { "o", TCC_OPTION_o, TCC_OPTION_HAS_ARG },
1508     { "-param", TCC_OPTION_param, TCC_OPTION_HAS_ARG },
1509     { "pedantic", TCC_OPTION_pedantic, 0},
1510     { "pthread", TCC_OPTION_pthread, 0},
1511     { "run", TCC_OPTION_run, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1512     { "rdynamic", TCC_OPTION_rdynamic, 0 },
1513     { "r", TCC_OPTION_r, 0 },
1514     { "s", TCC_OPTION_s, 0 },
1515     { "traditional", TCC_OPTION_traditional, 0 },
1516     { "Wl,", TCC_OPTION_Wl, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1517     { "Wp,", TCC_OPTION_Wp, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1518     { "W", TCC_OPTION_W, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1519     { "O", TCC_OPTION_O, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1520 #ifdef TCC_TARGET_ARM
1521     { "mfloat-abi", TCC_OPTION_mfloat_abi, TCC_OPTION_HAS_ARG },
1522 #endif
1523     { "m", TCC_OPTION_m, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1524     { "f", TCC_OPTION_f, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1525     { "isystem", TCC_OPTION_isystem, TCC_OPTION_HAS_ARG },
1526     { "iwithprefix", TCC_OPTION_iwithprefix, TCC_OPTION_HAS_ARG },
1527     { "include", TCC_OPTION_include, TCC_OPTION_HAS_ARG },
1528     { "nostdinc", TCC_OPTION_nostdinc, 0 },
1529     { "nostdlib", TCC_OPTION_nostdlib, 0 },
1530     { "print-search-dirs", TCC_OPTION_print_search_dirs, 0 },
1531     { "v", TCC_OPTION_v, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1532     { "w", TCC_OPTION_w, 0 },
1533     { "pipe", TCC_OPTION_pipe, 0},
1534     { "E", TCC_OPTION_E, 0},
1535     { "MD", TCC_OPTION_MD, 0},
1536     { "MF", TCC_OPTION_MF, TCC_OPTION_HAS_ARG },
1537     { "x", TCC_OPTION_x, TCC_OPTION_HAS_ARG },
1538     { NULL, 0, 0 },
1539 };
1540
1541 static const FlagDef options_W[] = {
1542     { 0, 0, "all" },
1543     { offsetof(TCCState, warn_unsupported), 0, "unsupported" },
1544     { offsetof(TCCState, warn_write_strings), 0, "write-strings" },
1545     { offsetof(TCCState, warn_error), 0, "error" },
1546     { offsetof(TCCState, warn_implicit_function_declaration), WD_ALL,
1547       "implicit-function-declaration" },
1548     { 0, 0, NULL }
1549 };
1550
1551 static const FlagDef options_f[] = {
1552     { offsetof(TCCState, char_is_unsigned), 0, "unsigned-char" },
1553     { offsetof(TCCState, char_is_unsigned), FD_INVERT, "signed-char" },
1554     { offsetof(TCCState, nocommon), FD_INVERT, "common" },
1555     { offsetof(TCCState, leading_underscore), 0, "leading-underscore" },
1556     { offsetof(TCCState, ms_extensions), 0, "ms-extensions" },
1557     { offsetof(TCCState, old_struct_init_code), 0, "old-struct-init-code" },
1558     { offsetof(TCCState, dollars_in_identifiers), 0, "dollars-in-identifiers" },
1559     { 0, 0, NULL }
1560 };
1561
1562 static const FlagDef options_m[] = {
1563     { offsetof(TCCState, ms_bitfields), 0, "ms-bitfields" },
1564 #ifdef TCC_TARGET_X86_64
1565     { offsetof(TCCState, nosse), FD_INVERT, "sse" },
1566 #endif
1567     { 0, 0, NULL }
1568 };
1569
1570 static void parse_option_D(TCCState *s1, const char *optarg)
1571 {
1572     char *sym = tcc_strdup(optarg);
1573     char *value = strchr(sym, '=');
1574     if (value)
1575         *value++ = '\0';
1576     tcc_define_symbol(s1, sym, value);
1577     tcc_free(sym);
1578 }
1579
1580 static void args_parser_add_file(TCCState *s, const char* filename, int filetype)
1581 {
1582     struct filespec *f = tcc_malloc(sizeof *f + strlen(filename));
1583     f->type = filetype;
1584     strcpy(f->name, filename);
1585     dynarray_add((void ***)&s->files, &s->nb_files, f);
1586 }
1587
1588 /* read list file */
1589 static void args_parser_listfile(TCCState *s, const char *filename)
1590 {
1591     int fd;
1592     size_t len;
1593     char *p;
1594
1595     fd = open(filename, O_RDONLY | O_BINARY);
1596     if (fd < 0)
1597         tcc_error("file '%s' not found", filename);
1598
1599     len = lseek(fd, 0, SEEK_END);
1600     p = tcc_malloc(len + 1), p[len] = 0;
1601     lseek(fd, 0, SEEK_SET), read(fd, p, len), close(fd);
1602     tcc_set_options(s, p);
1603     tcc_free(p);
1604 }
1605
1606 PUB_FUNC int tcc_parse_args(TCCState *s, int argc, char **argv)
1607 {
1608     const TCCOption *popt;
1609     const char *optarg, *r;
1610     int optind = 0;
1611     int run = 0;
1612     int x;
1613     int last_o = -1;
1614     CString linker_arg; /* collect -Wl options */
1615     char buf[1024];
1616
1617     cstr_new(&linker_arg);
1618
1619     while (optind < argc) {
1620
1621         r = argv[optind++];
1622
1623 reparse:
1624         if (r[0] == '@' && r[1] != '\0') {
1625             args_parser_listfile(s, r + 1);
1626             continue;
1627         }
1628
1629         if (r[0] != '-' || r[1] == '\0') {
1630             args_parser_add_file(s, r, s->filetype);
1631             if (run) {
1632                 optind--;
1633                 /* argv[0] will be this file */
1634                 break;
1635             }
1636             continue;
1637         }
1638
1639         /* find option in table */
1640         for(popt = tcc_options; ; ++popt) {
1641             const char *p1 = popt->name;
1642             const char *r1 = r + 1;
1643             if (p1 == NULL)
1644                 tcc_error("invalid option -- '%s'", r);
1645             if (!strstart(p1, &r1))
1646                 continue;
1647             optarg = r1;
1648             if (popt->flags & TCC_OPTION_HAS_ARG) {
1649                 if (*r1 == '\0' && !(popt->flags & TCC_OPTION_NOSEP)) {
1650                     if (optind >= argc)
1651                 arg_err:
1652                         tcc_error("argument to '%s' is missing", r);
1653                     optarg = argv[optind++];
1654                 }
1655             } else if (*r1 != '\0')
1656                 continue;
1657             break;
1658         }
1659
1660         switch(popt->index) {
1661         case TCC_OPTION_HELP:
1662             return 0;
1663         case TCC_OPTION_I:
1664             tcc_add_include_path(s, optarg);
1665             break;
1666         case TCC_OPTION_D:
1667             parse_option_D(s, optarg);
1668             break;
1669         case TCC_OPTION_U:
1670             tcc_undefine_symbol(s, optarg);
1671             break;
1672         case TCC_OPTION_L:
1673             tcc_add_library_path(s, optarg);
1674             break;
1675         case TCC_OPTION_B:
1676             /* set tcc utilities path (mainly for tcc development) */
1677             tcc_set_lib_path(s, optarg);
1678             break;
1679         case TCC_OPTION_l:
1680             args_parser_add_file(s, optarg, AFF_TYPE_LIBWH - s->alacarte_link);
1681             s->nb_libraries++;
1682             break;
1683         case TCC_OPTION_pthread:
1684             parse_option_D(s, "_REENTRANT");
1685             s->option_pthread = 1;
1686             break;
1687         case TCC_OPTION_bench:
1688             s->do_bench = 1;
1689             break;
1690 #ifdef CONFIG_TCC_BACKTRACE
1691         case TCC_OPTION_bt:
1692             tcc_set_num_callers(atoi(optarg));
1693             break;
1694 #endif
1695 #ifdef CONFIG_TCC_BCHECK
1696         case TCC_OPTION_b:
1697             s->do_bounds_check = 1;
1698             s->do_debug = 1;
1699             break;
1700 #endif
1701         case TCC_OPTION_g:
1702             s->do_debug = 1;
1703             break;
1704         case TCC_OPTION_c:
1705             x = TCC_OUTPUT_OBJ;
1706         set_output_type:
1707             if (s->output_type)
1708                 tcc_warning("-%s: overriding compiler action already specified", popt->name);
1709             s->output_type = x;
1710             break;
1711         case TCC_OPTION_d:
1712             if (*optarg == 'D')
1713                 s->dflag = 3;
1714             else if (*optarg == 'M')
1715                 s->dflag = 7;
1716             else
1717                 goto unsupported_option;
1718             break;
1719         case TCC_OPTION_static:
1720             s->static_link = 1;
1721             break;
1722         case TCC_OPTION_std:
1723             /* silently ignore, a current purpose:
1724                allow to use a tcc as a reference compiler for "make test" */
1725             break;
1726         case TCC_OPTION_shared:
1727             x = TCC_OUTPUT_DLL;
1728             goto set_output_type;
1729         case TCC_OPTION_soname:
1730             s->soname = tcc_strdup(optarg);
1731             break;
1732         case TCC_OPTION_o:
1733             if (s->outfile) {
1734                 tcc_warning("multiple -o option");
1735                 tcc_free(s->outfile);
1736             }
1737             s->outfile = tcc_strdup(optarg);
1738             break;
1739         case TCC_OPTION_r:
1740             /* generate a .o merging several output files */
1741             s->option_r = 1;
1742             x = TCC_OUTPUT_OBJ;
1743             goto set_output_type;
1744         case TCC_OPTION_isystem:
1745             tcc_add_sysinclude_path(s, optarg);
1746             break;
1747         case TCC_OPTION_iwithprefix:
1748             snprintf(buf, sizeof buf, "{B}/%s", optarg);
1749             tcc_add_sysinclude_path(s, buf);
1750             break;
1751         case TCC_OPTION_include:
1752             dynarray_add((void ***)&s->cmd_include_files,
1753                          &s->nb_cmd_include_files, tcc_strdup(optarg));
1754             break;
1755         case TCC_OPTION_nostdinc:
1756             s->nostdinc = 1;
1757             break;
1758         case TCC_OPTION_nostdlib:
1759             s->nostdlib = 1;
1760             break;
1761         case TCC_OPTION_print_search_dirs:
1762             s->print_search_dirs = 1;
1763             break;
1764         case TCC_OPTION_run:
1765 #ifndef TCC_IS_NATIVE
1766             tcc_error("-run is not available in a cross compiler");
1767 #endif
1768             tcc_set_options(s, optarg);
1769             run = 1;
1770             x = TCC_OUTPUT_MEMORY;
1771             goto set_output_type;
1772         case TCC_OPTION_v:
1773             do ++s->verbose; while (*optarg++ == 'v');
1774             break;
1775         case TCC_OPTION_f:
1776             if (set_flag(s, options_f, optarg) < 0)
1777                 goto unsupported_option;
1778             break;
1779 #ifdef TCC_TARGET_ARM
1780         case TCC_OPTION_mfloat_abi:
1781             /* tcc doesn't support soft float yet */
1782             if (!strcmp(optarg, "softfp")) {
1783                 s->float_abi = ARM_SOFTFP_FLOAT;
1784                 tcc_undefine_symbol(s, "__ARM_PCS_VFP");
1785             } else if (!strcmp(optarg, "hard"))
1786                 s->float_abi = ARM_HARD_FLOAT;
1787             else
1788                 tcc_error("unsupported float abi '%s'", optarg);
1789             break;
1790 #endif
1791         case TCC_OPTION_m:
1792             if (set_flag(s, options_m, optarg) == 0)
1793                 break;
1794             else if (x = atoi(optarg), x == 32 || x == 64)
1795                 s->cross_target = x;
1796             else
1797                 goto unsupported_option;
1798             break;
1799         case TCC_OPTION_W:
1800             if (set_flag(s, options_W, optarg) < 0)
1801                 goto unsupported_option;
1802             break;
1803         case TCC_OPTION_w:
1804             s->warn_none = 1;
1805             break;
1806         case TCC_OPTION_rdynamic:
1807             s->rdynamic = 1;
1808             break;
1809         case TCC_OPTION_Wl:
1810             if (linker_arg.size)
1811                 --linker_arg.size, cstr_ccat(&linker_arg, ',');
1812             cstr_cat(&linker_arg, optarg, 0);
1813             if (tcc_set_linker(s, linker_arg.data))
1814                 cstr_free(&linker_arg);
1815             break;
1816         case TCC_OPTION_Wp:
1817             r = optarg;
1818             goto reparse;
1819         case TCC_OPTION_E:
1820             x = TCC_OUTPUT_PREPROCESS;
1821             goto set_output_type;
1822         case TCC_OPTION_P:
1823             s->Pflag = atoi(optarg) + 1;
1824             break;
1825         case TCC_OPTION_MD:
1826             s->gen_deps = 1;
1827             break;
1828         case TCC_OPTION_MF:
1829             s->deps_outfile = tcc_strdup(optarg);
1830             break;
1831         case TCC_OPTION_dumpversion:
1832             printf ("%s\n", TCC_VERSION);
1833             exit(0);
1834             break;
1835         case TCC_OPTION_x:
1836             if (*optarg == 'c')
1837                 s->filetype = AFF_TYPE_C;
1838             else if (*optarg == 'a')
1839                 s->filetype = AFF_TYPE_ASMPP;
1840             else if (*optarg == 'n')
1841                 s->filetype = AFF_TYPE_NONE;
1842             else
1843                 tcc_warning("unsupported language '%s'", optarg);
1844             break;
1845         case TCC_OPTION_O:
1846             last_o = atoi(optarg);
1847             break;
1848         case TCC_OPTION_traditional:
1849         case TCC_OPTION_pedantic:
1850         case TCC_OPTION_pipe:
1851         case TCC_OPTION_s:
1852             /* ignored */
1853             break;
1854         default:
1855 unsupported_option:
1856             if (s->warn_unsupported)
1857                 tcc_warning("unsupported option '%s'", r);
1858             break;
1859         }
1860     }
1861
1862     if (last_o > 0)
1863         tcc_define_symbol(s, "__OPTIMIZE__", NULL);
1864
1865     if (linker_arg.size) {
1866         r = linker_arg.data;
1867         goto arg_err;
1868     }
1869
1870     return optind;
1871 }
1872
1873 LIBTCCAPI int tcc_set_options(TCCState *s, const char *r)
1874 {
1875     char **argv;
1876     int argc;
1877     int ret, q, c;
1878     CString str;
1879
1880     argc = 0, argv = NULL;
1881     for(;;) {
1882         while (c = (unsigned char)*r, c && c <= ' ')
1883             ++r;
1884         if (c == 0)
1885             break;
1886         q = 0;
1887         cstr_new(&str);
1888         while (c = (unsigned char)*r, c) {
1889             ++r;
1890             if (c == '\\' && (*r == '"' || *r == '\\')) {
1891                 c = *r++;
1892             } else if (c == '"') {
1893                 q = !q;
1894                 continue;
1895             } else if (q == 0 && c <= ' ') {
1896                 break;
1897             }
1898             cstr_ccat(&str, c);
1899         }
1900         cstr_ccat(&str, 0);
1901         //printf("<%s>\n", str.data), fflush(stdout);
1902         dynarray_add((void ***)&argv, &argc, tcc_strdup(str.data));
1903         cstr_free(&str);
1904     }
1905     ret = tcc_parse_args(s, argc, argv);
1906     dynarray_reset(&argv, &argc);
1907     return ret;
1908 }
1909
1910 PUB_FUNC void tcc_print_stats(TCCState *s, unsigned total_time)
1911 {
1912     if (total_time < 1)
1913         total_time = 1;
1914     if (total_bytes < 1)
1915         total_bytes = 1;
1916     fprintf(stderr, "%d idents, %d lines, %d bytes, %0.3f s, %u lines/s, %0.1f MB/s\n",
1917            tok_ident - TOK_IDENT, total_lines, total_bytes,
1918            (double)total_time/1000,
1919            (unsigned)total_lines*1000/total_time,
1920            (double)total_bytes/1000/total_time);
1921 }
1922
1923 PUB_FUNC void tcc_set_environment(TCCState *s)
1924 {
1925     char * path;
1926
1927     path = getenv("C_INCLUDE_PATH");
1928     if(path != NULL) {
1929         tcc_add_include_path(s, path);
1930     }
1931     path = getenv("CPATH");
1932     if(path != NULL) {
1933         tcc_add_include_path(s, path);
1934     }
1935     path = getenv("LIBRARY_PATH");
1936     if(path != NULL) {
1937         tcc_add_library_path(s, path);
1938     }
1939 }