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 #elif defined(TCC_TARGET_ARM)
  49 #include "arm-gen.c"
  50 #include "arm-link.c"
  51 #include "arm-asm.c"
  52 #elif defined(TCC_TARGET_ARM64)
  53 #include "arm64-gen.c"
  54 #include "arm64-link.c"
  55 #elif defined(TCC_TARGET_C67)
  56 #include "c67-gen.c"
  57 #include "c67-link.c"
  58 #include "tcccoff.c"
  59 #elif defined(TCC_TARGET_X86_64)
  60 #include "x86_64-gen.c"
  61 #include "x86_64-link.c"
  62 #include "i386-asm.c"
  63 #elif defined(TCC_TARGET_RISCV64)
  64 #include "riscv64-gen.c"
  65 #include "riscv64-link.c"
  66 #else
  67 #error unknown target
  68 #endif
  69 #ifdef CONFIG_TCC_ASM
  70 #include "tccasm.c"
  71 #endif
  72 #ifdef TCC_TARGET_PE
  73 #include "tccpe.c"
  74 #endif
  75 #endif /* ONE_SOURCE */
  76
  77 /********************************************************/
  78 #ifndef CONFIG_TCC_ASM
  79 ST_FUNC void asm_instr(void)
  80 {
  81     tcc_error("inline asm() not supported");
  82 }
  83 ST_FUNC void asm_global_instr(void)
  84 {
  85     tcc_error("inline asm() not supported");
  86 }
  87 #endif
  88
  89 /********************************************************/
  90 #ifdef _WIN32
  91 ST_FUNC char *normalize_slashes(char *path)
  92 {
  93     char *p;
  94     for (p = path; *p; ++p)
  95         if (*p == '\\')
  96             *p = '/';
  97     return path;
  98 }
  99
 100 static HMODULE tcc_module;
 101
 102 /* on win32, we suppose the lib and includes are at the location of 'tcc.exe' */
 103 static void tcc_set_lib_path_w32(TCCState *s)
 104 {
 105     char path[1024], *p;
 106     GetModuleFileNameA(tcc_module, path, sizeof path);
 107     p = tcc_basename(normalize_slashes(strlwr(path)));
 108     if (p > path)
 109         --p;
 110     *p = 0;
 111     tcc_set_lib_path(s, path);
 112 }
 113
 114 #ifdef TCC_TARGET_PE
 115 static void tcc_add_systemdir(TCCState *s)
 116 {
 117     char buf[1000];
 118     GetSystemDirectory(buf, sizeof buf);
 119     tcc_add_library_path(s, normalize_slashes(buf));
 120 }
 121 #endif
 122
 123 #ifdef LIBTCC_AS_DLL
 124 BOOL WINAPI DllMain (HINSTANCE hDll, DWORD dwReason, LPVOID lpReserved)
 125 {
 126     if (DLL_PROCESS_ATTACH == dwReason)
 127         tcc_module = hDll;
 128     return TRUE;
 129 }
 130 #endif
 131 #endif
 132
 133 /********************************************************/
 134 /* copy a string and truncate it. */
 135 ST_FUNC char *pstrcpy(char *buf, int buf_size, const char *s)
 136 {
 137     char *q, *q_end;
 138     int c;
 139
 140     if (buf_size > 0) {
 141         q = buf;
 142         q_end = buf + buf_size - 1;
 143         while (q < q_end) {
 144             c = *s++;
 145             if (c == '\0')
 146                 break;
 147             *q++ = c;
 148         }
 149         *q = '\0';
 150     }
 151     return buf;
 152 }
 153
 154 /* strcat and truncate. */
 155 ST_FUNC char *pstrcat(char *buf, int buf_size, const char *s)
 156 {
 157     int len;
 158     len = strlen(buf);
 159     if (len < buf_size)
 160         pstrcpy(buf + len, buf_size - len, s);
 161     return buf;
 162 }
 163
 164 ST_FUNC char *pstrncpy(char *out, const char *in, size_t num)
 165 {
 166     memcpy(out, in, num);
 167     out[num] = '\0';
 168     return out;
 169 }
 170
 171 /* extract the basename of a file */
 172 PUB_FUNC char *tcc_basename(const char *name)
 173 {
 174     char *p = strchr(name, 0);
 175     while (p > name && !IS_DIRSEP(p[-1]))
 176         --p;
 177     return p;
 178 }
 179
 180 /* extract extension part of a file
 181  *
 182  * (if no extension, return pointer to end-of-string)
 183  */
 184 PUB_FUNC char *tcc_fileextension (const char *name)
 185 {
 186     char *b = tcc_basename(name);
 187     char *e = strrchr(b, '.');
 188     return e ? e : strchr(b, 0);
 189 }
 190
 191 /********************************************************/
 192 /* memory management */
 193
 194 #undef free
 195 #undef malloc
 196 #undef realloc
 197
 198 #ifndef MEM_DEBUG
 199
 200 PUB_FUNC void tcc_free(void *ptr)
 201 {
 202     free(ptr);
 203 }
 204
 205 PUB_FUNC void *tcc_malloc(unsigned long size)
 206 {
 207     void *ptr;
 208     ptr = malloc(size);
 209     if (!ptr && size)
 210         tcc_error("memory full (malloc)");
 211     return ptr;
 212 }
 213
 214 PUB_FUNC void *tcc_mallocz(unsigned long size)
 215 {
 216     void *ptr;
 217     ptr = tcc_malloc(size);
 218     memset(ptr, 0, size);
 219     return ptr;
 220 }
 221
 222 PUB_FUNC void *tcc_realloc(void *ptr, unsigned long size)
 223 {
 224     void *ptr1;
 225     ptr1 = realloc(ptr, size);
 226     if (!ptr1 && size)
 227         tcc_error("memory full (realloc)");
 228     return ptr1;
 229 }
 230
 231 PUB_FUNC char *tcc_strdup(const char *str)
 232 {
 233     char *ptr;
 234     ptr = tcc_malloc(strlen(str) + 1);
 235     strcpy(ptr, str);
 236     return ptr;
 237 }
 238
 239 PUB_FUNC void tcc_memcheck(void)
 240 {
 241 }
 242
 243 #else
 244
 245 #define MEM_DEBUG_MAGIC1 0xFEEDDEB1
 246 #define MEM_DEBUG_MAGIC2 0xFEEDDEB2
 247 #define MEM_DEBUG_MAGIC3 0xFEEDDEB3
 248 #define MEM_DEBUG_FILE_LEN 40
 249 #define MEM_DEBUG_CHECK3(header) \
 250     ((mem_debug_header_t*)((char*)header + header->size))->magic3
 251 #define MEM_USER_PTR(header) \
 252     ((char *)header + offsetof(mem_debug_header_t, magic3))
 253 #define MEM_HEADER_PTR(ptr) \
 254     (mem_debug_header_t *)((char*)ptr - offsetof(mem_debug_header_t, magic3))
 255
 256 struct mem_debug_header {
 257     unsigned magic1;
 258     unsigned size;
 259     struct mem_debug_header *prev;
 260     struct mem_debug_header *next;
 261     int line_num;
 262     char file_name[MEM_DEBUG_FILE_LEN + 1];
 263     unsigned magic2;
 264     ALIGNED(16) unsigned magic3;
 265 };
 266
 267 typedef struct mem_debug_header mem_debug_header_t;
 268
 269 static mem_debug_header_t *mem_debug_chain;
 270 static unsigned mem_cur_size;
 271 static unsigned mem_max_size;
 272
 273 static mem_debug_header_t *malloc_check(void *ptr, const char *msg)
 274 {
 275     mem_debug_header_t * header = MEM_HEADER_PTR(ptr);
 276     if (header->magic1 != MEM_DEBUG_MAGIC1 ||
 277         header->magic2 != MEM_DEBUG_MAGIC2 ||
 278         MEM_DEBUG_CHECK3(header) != MEM_DEBUG_MAGIC3 ||
 279         header->size == (unsigned)-1) {
 280         fprintf(stderr, "%s check failed\n", msg);
 281         if (header->magic1 == MEM_DEBUG_MAGIC1)
 282             fprintf(stderr, "%s:%u: block allocated here.\n",
 283                 header->file_name, header->line_num);
 284         exit(1);
 285     }
 286     return header;
 287 }
 288
 289 PUB_FUNC void *tcc_malloc_debug(unsigned long size, const char *file, int line)
 290 {
 291     int ofs;
 292     mem_debug_header_t *header;
 293
 294     header = malloc(sizeof(mem_debug_header_t) + size);
 295     if (!header)
 296         tcc_error("memory full (malloc)");
 297
 298     header->magic1 = MEM_DEBUG_MAGIC1;
 299     header->magic2 = MEM_DEBUG_MAGIC2;
 300     header->size = size;
 301     MEM_DEBUG_CHECK3(header) = MEM_DEBUG_MAGIC3;
 302     header->line_num = line;
 303     ofs = strlen(file) - MEM_DEBUG_FILE_LEN;
 304     strncpy(header->file_name, file + (ofs > 0 ? ofs : 0), MEM_DEBUG_FILE_LEN);
 305     header->file_name[MEM_DEBUG_FILE_LEN] = 0;
 306
 307     header->next = mem_debug_chain;
 308     header->prev = NULL;
 309     if (header->next)
 310         header->next->prev = header;
 311     mem_debug_chain = header;
 312
 313     mem_cur_size += size;
 314     if (mem_cur_size > mem_max_size)
 315         mem_max_size = mem_cur_size;
 316
 317     return MEM_USER_PTR(header);
 318 }
 319
 320 PUB_FUNC void tcc_free_debug(void *ptr)
 321 {
 322     mem_debug_header_t *header;
 323     if (!ptr)
 324         return;
 325     header = malloc_check(ptr, "tcc_free");
 326     mem_cur_size -= header->size;
 327     header->size = (unsigned)-1;
 328     if (header->next)
 329         header->next->prev = header->prev;
 330     if (header->prev)
 331         header->prev->next = header->next;
 332     if (header == mem_debug_chain)
 333         mem_debug_chain = header->next;
 334     free(header);
 335 }
 336
 337 PUB_FUNC void *tcc_mallocz_debug(unsigned long size, const char *file, int line)
 338 {
 339     void *ptr;
 340     ptr = tcc_malloc_debug(size,file,line);
 341     memset(ptr, 0, size);
 342     return ptr;
 343 }
 344
 345 PUB_FUNC void *tcc_realloc_debug(void *ptr, unsigned long size, const char *file, int line)
 346 {
 347     mem_debug_header_t *header;
 348     int mem_debug_chain_update = 0;
 349     if (!ptr)
 350         return tcc_malloc_debug(size, file, line);
 351     header = malloc_check(ptr, "tcc_realloc");
 352     mem_cur_size -= header->size;
 353     mem_debug_chain_update = (header == mem_debug_chain);
 354     header = realloc(header, sizeof(mem_debug_header_t) + size);
 355     if (!header)
 356         tcc_error("memory full (realloc)");
 357     header->size = size;
 358     MEM_DEBUG_CHECK3(header) = MEM_DEBUG_MAGIC3;
 359     if (header->next)
 360         header->next->prev = header;
 361     if (header->prev)
 362         header->prev->next = header;
 363     if (mem_debug_chain_update)
 364         mem_debug_chain = header;
 365     mem_cur_size += size;
 366     if (mem_cur_size > mem_max_size)
 367         mem_max_size = mem_cur_size;
 368     return MEM_USER_PTR(header);
 369 }
 370
 371 PUB_FUNC char *tcc_strdup_debug(const char *str, const char *file, int line)
 372 {
 373     char *ptr;
 374     ptr = tcc_malloc_debug(strlen(str) + 1, file, line);
 375     strcpy(ptr, str);
 376     return ptr;
 377 }
 378
 379 PUB_FUNC void tcc_memcheck(void)
 380 {
 381     if (mem_cur_size) {
 382         mem_debug_header_t *header = mem_debug_chain;
 383         fprintf(stderr, "MEM_DEBUG: mem_leak= %d bytes, mem_max_size= %d bytes\n",
 384             mem_cur_size, mem_max_size);
 385         while (header) {
 386             fprintf(stderr, "%s:%u: error: %u bytes leaked\n",
 387                 header->file_name, header->line_num, header->size);
 388             header = header->next;
 389         }
 390 #if MEM_DEBUG-0 == 2
 391         exit(2);
 392 #endif
 393     }
 394 }
 395 #endif /* MEM_DEBUG */
 396
 397 #define free(p) use_tcc_free(p)
 398 #define malloc(s) use_tcc_malloc(s)
 399 #define realloc(p, s) use_tcc_realloc(p, s)
 400
 401 /********************************************************/
 402 /* dynarrays */
 403
 404 ST_FUNC void dynarray_add(void *ptab, int *nb_ptr, void *data)
 405 {
 406     int nb, nb_alloc;
 407     void **pp;
 408
 409     nb = *nb_ptr;
 410     pp = *(void ***)ptab;
 411     /* every power of two we double array size */
 412     if ((nb & (nb - 1)) == 0) {
 413         if (!nb)
 414             nb_alloc = 1;
 415         else
 416             nb_alloc = nb * 2;
 417         pp = tcc_realloc(pp, nb_alloc * sizeof(void *));
 418         *(void***)ptab = pp;
 419     }
 420     pp[nb++] = data;
 421     *nb_ptr = nb;
 422 }
 423
 424 ST_FUNC void dynarray_reset(void *pp, int *n)
 425 {
 426     void **p;
 427     for (p = *(void***)pp; *n; ++p, --*n)
 428         if (*p)
 429             tcc_free(*p);
 430     tcc_free(*(void**)pp);
 431     *(void**)pp = NULL;
 432 }
 433
 434 static void tcc_split_path(TCCState *s, void *p_ary, int *p_nb_ary, const char *in)
 435 {
 436     const char *p;
 437     do {
 438         int c;
 439         CString str;
 440
 441         cstr_new(&str);
 442         for (p = in; c = *p, c != '\0' && c != PATHSEP[0]; ++p) {
 443             if (c == '{' && p[1] && p[2] == '}') {
 444                 c = p[1], p += 2;
 445                 if (c == 'B')
 446                     cstr_cat(&str, s->tcc_lib_path, -1);
 447             } else {
 448                 cstr_ccat(&str, c);
 449             }
 450         }
 451         if (str.size) {
 452             cstr_ccat(&str, '\0');
 453             dynarray_add(p_ary, p_nb_ary, tcc_strdup(str.data));
 454         }
 455         cstr_free(&str);
 456         in = p+1;
 457     } while (*p);
 458 }
 459
 460 /********************************************************/
 461
 462 static void strcat_vprintf(char *buf, int buf_size, const char *fmt, va_list ap)
 463 {
 464     int len;
 465     len = strlen(buf);
 466     vsnprintf(buf + len, buf_size - len, fmt, ap);
 467 }
 468
 469 static void strcat_printf(char *buf, int buf_size, const char *fmt, ...)
 470 {
 471     va_list ap;
 472     va_start(ap, fmt);
 473     strcat_vprintf(buf, buf_size, fmt, ap);
 474     va_end(ap);
 475 }
 476
 477 static void error1(TCCState *s1, int is_warning, const char *fmt, va_list ap)
 478 {
 479     char buf[2048];
 480     BufferedFile **pf, *f;
 481
 482     buf[0] = '\0';
 483     /* use upper file if inline ":asm:" or token ":paste:" */
 484     for (f = file; f && f->filename[0] == ':'; f = f->prev)
 485      ;
 486     if (f) {
 487         for(pf = s1->include_stack; pf < s1->include_stack_ptr; pf++)
 488             strcat_printf(buf, sizeof(buf), "In file included from %s:%d:\n",
 489                 (*pf)->filename, (*pf)->line_num);
 490         if (s1->error_set_jmp_enabled) {
 491             strcat_printf(buf, sizeof(buf), "%s:%d: ",
 492                 f->filename, f->line_num - !!(tok_flags & TOK_FLAG_BOL));
 493         } else {
 494             strcat_printf(buf, sizeof(buf), "%s: ",
 495                 f->filename);
 496         }
 497     } else {
 498         strcat_printf(buf, sizeof(buf), "tcc: ");
 499     }
 500     if (is_warning)
 501         strcat_printf(buf, sizeof(buf), "warning: ");
 502     else
 503         strcat_printf(buf, sizeof(buf), "error: ");
 504     strcat_vprintf(buf, sizeof(buf), fmt, ap);
 505
 506     if (!s1->error_func) {
 507         /* default case: stderr */
 508         if (s1->output_type == TCC_OUTPUT_PREPROCESS && s1->ppfp == stdout)
 509             /* print a newline during tcc -E */
 510             printf("\n"), fflush(stdout);
 511         fflush(stdout); /* flush -v output */
 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     bf->true_filename = bf->filename;
 583     bf->line_num = 1;
 584     bf->ifdef_stack_ptr = s1->ifdef_stack_ptr;
 585     bf->fd = -1;
 586     bf->prev = file;
 587     file = bf;
 588     tok_flags = TOK_FLAG_BOL | TOK_FLAG_BOF;
 589 }
 590
 591 ST_FUNC void tcc_close(void)
 592 {
 593     BufferedFile *bf = file;
 594     if (bf->fd > 0) {
 595         close(bf->fd);
 596         total_lines += bf->line_num;
 597     }
 598     if (bf->true_filename != bf->filename)
 599         tcc_free(bf->true_filename);
 600     file = bf->prev;
 601     tcc_free(bf);
 602 }
 603
 604 ST_FUNC int tcc_open(TCCState *s1, const char *filename)
 605 {
 606     int fd;
 607     if (strcmp(filename, "-") == 0)
 608         fd = 0, filename = "<stdin>";
 609     else
 610         fd = open(filename, O_RDONLY | O_BINARY);
 611     if ((s1->verbose == 2 && fd >= 0) || s1->verbose == 3)
 612         printf("%s %*s%s\n", fd < 0 ? "nf":"->",
 613                (int)(s1->include_stack_ptr - s1->include_stack), "", filename);
 614     if (fd < 0)
 615         return -1;
 616     tcc_open_bf(s1, filename, 0);
 617 #ifdef _WIN32
 618     normalize_slashes(file->filename);
 619 #endif
 620     file->fd = fd;
 621     return fd;
 622 }
 623
 624 /* compile the file opened in 'file'. Return non zero if errors. */
 625 static int tcc_compile(TCCState *s1, int filetype)
 626 {
 627     Sym *define_start;
 628     int is_asm;
 629
 630     define_start = define_stack;
 631     is_asm = !!(filetype & (AFF_TYPE_ASM|AFF_TYPE_ASMPP));
 632     tccelf_begin_file(s1);
 633
 634     if (setjmp(s1->error_jmp_buf) == 0) {
 635         s1->nb_errors = 0;
 636         s1->error_set_jmp_enabled = 1;
 637
 638         preprocess_start(s1, is_asm);
 639         if (s1->output_type == TCC_OUTPUT_PREPROCESS) {
 640             tcc_preprocess(s1);
 641         } else if (is_asm) {
 642 #ifdef CONFIG_TCC_ASM
 643             tcc_assemble(s1, !!(filetype & AFF_TYPE_ASMPP));
 644 #else
 645             tcc_error_noabort("asm not supported");
 646 #endif
 647         } else {
 648             tccgen_compile(s1);
 649         }
 650     }
 651     s1->error_set_jmp_enabled = 0;
 652
 653     preprocess_end(s1);
 654     free_inline_functions(s1);
 655     /* reset define stack, but keep -D and built-ins */
 656     free_defines(define_start);
 657     sym_pop(&global_stack, NULL, 0);
 658     sym_pop(&local_stack, NULL, 0);
 659     tccelf_end_file(s1);
 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, s->filetype);
 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     if (s) {
 705         define_undef(s);
 706         tok_str_free_str(s->d);
 707         s->d = NULL;
 708     }
 709 }
 710
 711 /* cleanup all static data used during compilation */
 712 static void tcc_cleanup(void)
 713 {
 714     if (NULL == tcc_state)
 715         return;
 716     while (file)
 717         tcc_close();
 718     tccpp_delete(tcc_state);
 719     tcc_state = NULL;
 720     /* free sym_pools */
 721     dynarray_reset(&sym_pools, &nb_sym_pools);
 722     /* reset symbol stack */
 723     sym_free_first = NULL;
 724 }
 725
 726 LIBTCCAPI TCCState *tcc_new(void)
 727 {
 728     TCCState *s;
 729
 730     tcc_cleanup();
 731
 732     s = tcc_mallocz(sizeof(TCCState));
 733     if (!s)
 734         return NULL;
 735     tcc_state = s;
 736     ++nb_states;
 737
 738     s->nocommon = 1;
 739     s->dollars_in_identifiers = 1; /*on by default like in gcc/clang*/
 740     s->cversion = 199901; /* default unless -std=c11 is supplied */
 741     s->warn_implicit_function_declaration = 1;
 742     s->ms_extensions = 1;
 743
 744 #ifdef CHAR_IS_UNSIGNED
 745     s->char_is_unsigned = 1;
 746 #endif
 747 #ifdef TCC_TARGET_I386
 748     s->seg_size = 32;
 749 #endif
 750     /* enable this if you want symbols with leading underscore on windows: */
 751 #if 0 /* def TCC_TARGET_PE */
 752     s->leading_underscore = 1;
 753 #endif
 754 #ifdef _WIN32
 755     tcc_set_lib_path_w32(s);
 756 #else
 757     tcc_set_lib_path(s, CONFIG_TCCDIR);
 758 #endif
 759     tccelf_new(s);
 760     tccpp_new(s);
 761
 762     /* we add dummy defines for some special macros to speed up tests
 763        and to have working defined() */
 764     define_push(TOK___LINE__, MACRO_OBJ, NULL, NULL);
 765     define_push(TOK___FILE__, MACRO_OBJ, NULL, NULL);
 766     define_push(TOK___DATE__, MACRO_OBJ, NULL, NULL);
 767     define_push(TOK___TIME__, MACRO_OBJ, NULL, NULL);
 768     define_push(TOK___COUNTER__, MACRO_OBJ, NULL, NULL);
 769     {
 770         /* define __TINYC__ 92X  */
 771         char buffer[32]; int a,b,c;
 772         sscanf(TCC_VERSION, "%d.%d.%d", &a, &b, &c);
 773         sprintf(buffer, "%d", a*10000 + b*100 + c);
 774         tcc_define_symbol(s, "__TINYC__", buffer);
 775     }
 776
 777     /* standard defines */
 778     tcc_define_symbol(s, "__STDC__", NULL);
 779     tcc_define_symbol(s, "__STDC_VERSION__", "199901L");
 780     tcc_define_symbol(s, "__STDC_HOSTED__", NULL);
 781
 782     /* target defines */
 783 #if defined(TCC_TARGET_I386)
 784     tcc_define_symbol(s, "__i386__", NULL);
 785     tcc_define_symbol(s, "__i386", NULL);
 786     tcc_define_symbol(s, "i386", NULL);
 787 #elif defined(TCC_TARGET_X86_64)
 788     tcc_define_symbol(s, "__x86_64__", NULL);
 789 #elif defined(TCC_TARGET_ARM)
 790     tcc_define_symbol(s, "__ARM_ARCH_4__", NULL);
 791     tcc_define_symbol(s, "__arm_elf__", NULL);
 792     tcc_define_symbol(s, "__arm_elf", NULL);
 793     tcc_define_symbol(s, "arm_elf", NULL);
 794     tcc_define_symbol(s, "__arm__", NULL);
 795     tcc_define_symbol(s, "__arm", NULL);
 796     tcc_define_symbol(s, "arm", NULL);
 797     tcc_define_symbol(s, "__APCS_32__", NULL);
 798     tcc_define_symbol(s, "__ARMEL__", NULL);
 799 #if defined(TCC_ARM_EABI)
 800     tcc_define_symbol(s, "__ARM_EABI__", NULL);
 801 #endif
 802 #if defined(TCC_ARM_HARDFLOAT)
 803     s->float_abi = ARM_HARD_FLOAT;
 804     tcc_define_symbol(s, "__ARM_PCS_VFP", NULL);
 805 #else
 806     s->float_abi = ARM_SOFTFP_FLOAT;
 807 #endif
 808 #elif defined(TCC_TARGET_ARM64)
 809     tcc_define_symbol(s, "__aarch64__", NULL);
 810 #elif defined TCC_TARGET_C67
 811     tcc_define_symbol(s, "__C67__", NULL);
 812 #endif
 813
 814 #ifdef TCC_TARGET_PE
 815     tcc_define_symbol(s, "_WIN32", NULL);
 816 # ifdef TCC_TARGET_X86_64
 817     tcc_define_symbol(s, "_WIN64", NULL);
 818 # endif
 819 #else
 820     tcc_define_symbol(s, "__unix__", NULL);
 821     tcc_define_symbol(s, "__unix", NULL);
 822     tcc_define_symbol(s, "unix", NULL);
 823 # if defined(__linux__)
 824     tcc_define_symbol(s, "__linux__", NULL);
 825     tcc_define_symbol(s, "__linux", NULL);
 826 # endif
 827 # if defined(__FreeBSD__)
 828     tcc_define_symbol(s, "__FreeBSD__", "__FreeBSD__");
 829     /* No 'Thread Storage Local' on FreeBSD with tcc */
 830     tcc_define_symbol(s, "__NO_TLS", NULL);
 831 # endif
 832 # if defined(__FreeBSD_kernel__)
 833     tcc_define_symbol(s, "__FreeBSD_kernel__", NULL);
 834 # endif
 835 # if defined(__NetBSD__)
 836     tcc_define_symbol(s, "__NetBSD__", "__NetBSD__");
 837 # endif
 838 # if defined(__OpenBSD__)
 839     tcc_define_symbol(s, "__OpenBSD__", "__OpenBSD__");
 840 # endif
 841 #endif
 842
 843     /* TinyCC & gcc defines */
 844 #if PTR_SIZE == 4
 845     /* 32bit systems. */
 846     tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned int");
 847     tcc_define_symbol(s, "__PTRDIFF_TYPE__", "int");
 848     tcc_define_symbol(s, "__ILP32__", NULL);
 849 #elif LONG_SIZE == 4
 850     /* 64bit Windows. */
 851     tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned long long");
 852     tcc_define_symbol(s, "__PTRDIFF_TYPE__", "long long");
 853     tcc_define_symbol(s, "__LLP64__", NULL);
 854 #else
 855     /* Other 64bit systems. */
 856     tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned long");
 857     tcc_define_symbol(s, "__PTRDIFF_TYPE__", "long");
 858     tcc_define_symbol(s, "__LP64__", NULL);
 859 #endif
 860
 861 #ifdef TCC_TARGET_PE
 862     tcc_define_symbol(s, "__WCHAR_TYPE__", "unsigned short");
 863     tcc_define_symbol(s, "__WINT_TYPE__", "unsigned short");
 864 #else
 865     tcc_define_symbol(s, "__WCHAR_TYPE__", "int");
 866     /* wint_t is unsigned int by default, but (signed) int on BSDs
 867        and unsigned short on windows.  Other OSes might have still
 868        other conventions, sigh.  */
 869 # if defined(__FreeBSD__) || defined (__FreeBSD_kernel__) \
 870   || defined(__NetBSD__) || defined(__OpenBSD__)
 871     tcc_define_symbol(s, "__WINT_TYPE__", "int");
 872 #  ifdef __FreeBSD__
 873     /* define __GNUC__ to have some useful stuff from sys/cdefs.h
 874        that are unconditionally used in FreeBSDs other system headers :/ */
 875     tcc_define_symbol(s, "__GNUC__", "2");
 876     tcc_define_symbol(s, "__GNUC_MINOR__", "7");
 877     tcc_define_symbol(s, "__builtin_alloca", "alloca");
 878 #  endif
 879 # else
 880     tcc_define_symbol(s, "__WINT_TYPE__", "unsigned int");
 881     /* glibc defines */
 882     tcc_define_symbol(s, "__REDIRECT(name, proto, alias)",
 883         "name proto __asm__ (#alias)");
 884     tcc_define_symbol(s, "__REDIRECT_NTH(name, proto, alias)",
 885         "name proto __asm__ (#alias) __THROW");
 886 # endif
 887 # if defined(TCC_MUSL)
 888     tcc_define_symbol(s, "__DEFINED_va_list", "");
 889     tcc_define_symbol(s, "__DEFINED___isoc_va_list", "");
 890     tcc_define_symbol(s, "__isoc_va_list", "void *");
 891 # endif /* TCC_MUSL */
 892     /* Some GCC builtins that are simple to express as macros.  */
 893     tcc_define_symbol(s, "__builtin_extract_return_addr(x)", "x");
 894 #endif /* ndef TCC_TARGET_PE */
 895     return s;
 896 }
 897
 898 LIBTCCAPI void tcc_delete(TCCState *s1)
 899 {
 900     tcc_cleanup();
 901
 902     /* free sections */
 903     tccelf_delete(s1);
 904
 905     /* free library paths */
 906     dynarray_reset(&s1->library_paths, &s1->nb_library_paths);
 907     dynarray_reset(&s1->crt_paths, &s1->nb_crt_paths);
 908
 909     /* free include paths */
 910     dynarray_reset(&s1->cached_includes, &s1->nb_cached_includes);
 911     dynarray_reset(&s1->include_paths, &s1->nb_include_paths);
 912     dynarray_reset(&s1->sysinclude_paths, &s1->nb_sysinclude_paths);
 913     dynarray_reset(&s1->cmd_include_files, &s1->nb_cmd_include_files);
 914
 915     tcc_free(s1->tcc_lib_path);
 916     tcc_free(s1->soname);
 917     tcc_free(s1->rpath);
 918     tcc_free(s1->init_symbol);
 919     tcc_free(s1->fini_symbol);
 920     tcc_free(s1->outfile);
 921     tcc_free(s1->deps_outfile);
 922     dynarray_reset(&s1->files, &s1->nb_files);
 923     dynarray_reset(&s1->target_deps, &s1->nb_target_deps);
 924     dynarray_reset(&s1->pragma_libs, &s1->nb_pragma_libs);
 925     dynarray_reset(&s1->argv, &s1->argc);
 926
 927 #ifdef TCC_IS_NATIVE
 928     /* free runtime memory */
 929     tcc_run_free(s1);
 930 #endif
 931
 932     tcc_free(s1);
 933     if (0 == --nb_states)
 934         tcc_memcheck();
 935 }
 936
 937 LIBTCCAPI int tcc_set_output_type(TCCState *s, int output_type)
 938 {
 939     s->output_type = output_type;
 940
 941     /* always elf for objects */
 942     if (output_type == TCC_OUTPUT_OBJ)
 943         s->output_format = TCC_OUTPUT_FORMAT_ELF;
 944
 945     if (s->char_is_unsigned)
 946         tcc_define_symbol(s, "__CHAR_UNSIGNED__", NULL);
 947
 948     if (!s->nostdinc) {
 949         /* default include paths */
 950         /* -isystem paths have already been handled */
 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_include_path(TCCState *s, const char *pathname)
 989 {
 990     tcc_split_path(s, &s->include_paths, &s->nb_include_paths, pathname);
 991     return 0;
 992 }
 993
 994 LIBTCCAPI int tcc_add_sysinclude_path(TCCState *s, const char *pathname)
 995 {
 996     tcc_split_path(s, &s->sysinclude_paths, &s->nb_sysinclude_paths, pathname);
 997     return 0;
 998 }
 999
1000 ST_FUNC int tcc_add_file_internal(TCCState *s1, const char *filename, int flags)
1001 {
1002     int ret;
1003
1004     /* open the file */
1005     ret = tcc_open(s1, filename);
1006     if (ret < 0) {
1007         if (flags & AFF_PRINT_ERROR)
1008             tcc_error_noabort("file '%s' not found", filename);
1009         return ret;
1010     }
1011
1012     /* update target deps */
1013     dynarray_add(&s1->target_deps, &s1->nb_target_deps,
1014             tcc_strdup(filename));
1015
1016     if (flags & AFF_TYPE_BIN) {
1017         ElfW(Ehdr) ehdr;
1018         int fd, obj_type;
1019
1020         fd = file->fd;
1021         obj_type = tcc_object_type(fd, &ehdr);
1022         lseek(fd, 0, SEEK_SET);
1023
1024 #ifdef TCC_TARGET_MACHO
1025         if (0 == obj_type && 0 == strcmp(tcc_fileextension(filename), ".dylib"))
1026             obj_type = AFF_BINTYPE_DYN;
1027 #endif
1028
1029         switch (obj_type) {
1030         case AFF_BINTYPE_REL:
1031             ret = tcc_load_object_file(s1, fd, 0);
1032             break;
1033 #ifndef TCC_TARGET_PE
1034         case AFF_BINTYPE_DYN:
1035             if (s1->output_type == TCC_OUTPUT_MEMORY) {
1036                 ret = 0;
1037 #ifdef TCC_IS_NATIVE
1038                 if (NULL == dlopen(filename, RTLD_GLOBAL | RTLD_LAZY))
1039                     ret = -1;
1040 #endif
1041             } else {
1042                 ret = tcc_load_dll(s1, fd, filename,
1043                                    (flags & AFF_REFERENCED_DLL) != 0);
1044             }
1045             break;
1046 #endif
1047         case AFF_BINTYPE_AR:
1048             ret = tcc_load_archive(s1, fd, !(flags & AFF_WHOLE_ARCHIVE));
1049             break;
1050 #ifdef TCC_TARGET_COFF
1051         case AFF_BINTYPE_C67:
1052             ret = tcc_load_coff(s1, fd);
1053             break;
1054 #endif
1055         default:
1056 #ifdef TCC_TARGET_PE
1057             ret = pe_load_file(s1, filename, fd);
1058 #else
1059             /* as GNU ld, consider it is an ld script if not recognized */
1060             ret = tcc_load_ldscript(s1);
1061 #endif
1062             if (ret < 0)
1063                 tcc_error_noabort("unrecognized file type");
1064             break;
1065         }
1066     } else {
1067         ret = tcc_compile(s1, flags);
1068     }
1069     tcc_close();
1070     return ret;
1071 }
1072
1073 LIBTCCAPI int tcc_add_file(TCCState *s, const char *filename)
1074 {
1075     int filetype = s->filetype;
1076     if (0 == (filetype & AFF_TYPE_MASK)) {
1077         /* use a file extension to detect a filetype */
1078         const char *ext = tcc_fileextension(filename);
1079         if (ext[0]) {
1080             ext++;
1081             if (!strcmp(ext, "S"))
1082                 filetype = AFF_TYPE_ASMPP;
1083             else if (!strcmp(ext, "s"))
1084                 filetype = AFF_TYPE_ASM;
1085             else if (!PATHCMP(ext, "c") || !PATHCMP(ext, "i"))
1086                 filetype = AFF_TYPE_C;
1087             else
1088                 filetype |= AFF_TYPE_BIN;
1089         } else {
1090             filetype = AFF_TYPE_C;
1091         }
1092     }
1093     return tcc_add_file_internal(s, filename, filetype | AFF_PRINT_ERROR);
1094 }
1095
1096 LIBTCCAPI int tcc_add_library_path(TCCState *s, const char *pathname)
1097 {
1098     tcc_split_path(s, &s->library_paths, &s->nb_library_paths, pathname);
1099     return 0;
1100 }
1101
1102 static int tcc_add_library_internal(TCCState *s, const char *fmt,
1103     const char *filename, int flags, char **paths, int nb_paths)
1104 {
1105     char buf[1024];
1106     int i;
1107
1108     for(i = 0; i < nb_paths; i++) {
1109         snprintf(buf, sizeof(buf), fmt, paths[i], filename);
1110         if (tcc_add_file_internal(s, buf, flags | AFF_TYPE_BIN) == 0)
1111             return 0;
1112     }
1113     return -1;
1114 }
1115
1116 /* find and load a dll. Return non zero if not found */
1117 /* XXX: add '-rpath' option support ? */
1118 ST_FUNC int tcc_add_dll(TCCState *s, const char *filename, int flags)
1119 {
1120     return tcc_add_library_internal(s, "%s/%s", filename, flags,
1121         s->library_paths, s->nb_library_paths);
1122 }
1123
1124 #ifndef TCC_TARGET_PE
1125 ST_FUNC int tcc_add_crt(TCCState *s, const char *filename)
1126 {
1127     if (-1 == tcc_add_library_internal(s, "%s/%s",
1128         filename, 0, s->crt_paths, s->nb_crt_paths))
1129         tcc_error_noabort("file '%s' not found", filename);
1130     return 0;
1131 }
1132 #endif
1133
1134 /* the library name is the same as the argument of the '-l' option */
1135 LIBTCCAPI int tcc_add_library(TCCState *s, const char *libraryname)
1136 {
1137 #if defined TCC_TARGET_PE
1138     const char *libs[] = { "%s/%s.def", "%s/lib%s.def", "%s/%s.dll", "%s/lib%s.dll", "%s/lib%s.a", NULL };
1139     const char **pp = s->static_link ? libs + 4 : libs;
1140 #elif defined TCC_TARGET_MACHO
1141     const char *libs[] = { "%s/lib%s.dylib", "%s/lib%s.a", NULL };
1142     const char **pp = s->static_link ? libs + 1 : 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     int flags = s->filetype & AFF_WHOLE_ARCHIVE;
1148     while (*pp) {
1149         if (0 == tcc_add_library_internal(s, *pp,
1150             libraryname, flags, s->library_paths, s->nb_library_paths))
1151             return 0;
1152         ++pp;
1153     }
1154     return -1;
1155 }
1156
1157 PUB_FUNC int tcc_add_library_err(TCCState *s, const char *libname)
1158 {
1159     int ret = tcc_add_library(s, libname);
1160     if (ret < 0)
1161         tcc_error_noabort("library '%s' not found", libname);
1162     return ret;
1163 }
1164
1165 /* handle #pragma comment(lib,) */
1166 ST_FUNC void tcc_add_pragma_libs(TCCState *s1)
1167 {
1168     int i;
1169     for (i = 0; i < s1->nb_pragma_libs; i++)
1170         tcc_add_library_err(s1, s1->pragma_libs[i]);
1171 }
1172
1173 LIBTCCAPI int tcc_add_symbol(TCCState *s, const char *name, const void *val)
1174 {
1175 #ifdef TCC_TARGET_PE
1176     /* On x86_64 'val' might not be reachable with a 32bit offset.
1177        So it is handled here as if it were in a DLL. */
1178     pe_putimport(s, 0, name, (uintptr_t)val);
1179 #else
1180     set_elf_sym(symtab_section, (uintptr_t)val, 0,
1181         ELFW(ST_INFO)(STB_GLOBAL, STT_NOTYPE), 0,
1182         SHN_ABS, name);
1183 #endif
1184     return 0;
1185 }
1186
1187 LIBTCCAPI void tcc_set_lib_path(TCCState *s, const char *path)
1188 {
1189     tcc_free(s->tcc_lib_path);
1190     s->tcc_lib_path = tcc_strdup(path);
1191 }
1192
1193 #define WD_ALL    0x0001 /* warning is activated when using -Wall */
1194 #define FD_INVERT 0x0002 /* invert value before storing */
1195
1196 typedef struct FlagDef {
1197     uint16_t offset;
1198     uint16_t flags;
1199     const char *name;
1200 } FlagDef;
1201
1202 static int no_flag(const char **pp)
1203 {
1204     const char *p = *pp;
1205     if (*p != 'n' || *++p != 'o' || *++p != '-')
1206         return 0;
1207     *pp = p + 1;
1208     return 1;
1209 }
1210
1211 ST_FUNC int set_flag(TCCState *s, const FlagDef *flags, const char *name)
1212 {
1213     int value, ret;
1214     const FlagDef *p;
1215     const char *r;
1216
1217     value = 1;
1218     r = name;
1219     if (no_flag(&r))
1220         value = 0;
1221
1222     for (ret = -1, p = flags; p->name; ++p) {
1223         if (ret) {
1224             if (strcmp(r, p->name))
1225                 continue;
1226         } else {
1227             if (0 == (p->flags & WD_ALL))
1228                 continue;
1229         }
1230         if (p->offset) {
1231             *(int*)((char *)s + p->offset) =
1232                 p->flags & FD_INVERT ? !value : value;
1233             if (ret)
1234                 return 0;
1235         } else {
1236             ret = 0;
1237         }
1238     }
1239     return ret;
1240 }
1241
1242 static int strstart(const char *val, const char **str)
1243 {
1244     const char *p, *q;
1245     p = *str;
1246     q = val;
1247     while (*q) {
1248         if (*p != *q)
1249             return 0;
1250         p++;
1251         q++;
1252     }
1253     *str = p;
1254     return 1;
1255 }
1256
1257 /* Like strstart, but automatically takes into account that ld options can
1258  *
1259  * - start with double or single dash (e.g. '--soname' or '-soname')
1260  * - arguments can be given as separate or after '=' (e.g. '-Wl,-soname,x.so'
1261  *   or '-Wl,-soname=x.so')
1262  *
1263  * you provide `val` always in 'option[=]' form (no leading -)
1264  */
1265 static int link_option(const char *str, const char *val, const char **ptr)
1266 {
1267     const char *p, *q;
1268     int ret;
1269
1270     /* there should be 1 or 2 dashes */
1271     if (*str++ != '-')
1272         return 0;
1273     if (*str == '-')
1274         str++;
1275
1276     /* then str & val should match (potentially up to '=') */
1277     p = str;
1278     q = val;
1279
1280     ret = 1;
1281     if (q[0] == '?') {
1282         ++q;
1283         if (no_flag(&p))
1284             ret = -1;
1285     }
1286
1287     while (*q != '\0' && *q != '=') {
1288         if (*p != *q)
1289             return 0;
1290         p++;
1291         q++;
1292     }
1293
1294     /* '=' near eos means ',' or '=' is ok */
1295     if (*q == '=') {
1296         if (*p == 0)
1297             *ptr = p;
1298         if (*p != ',' && *p != '=')
1299             return 0;
1300         p++;
1301     } else if (*p) {
1302         return 0;
1303     }
1304     *ptr = p;
1305     return ret;
1306 }
1307
1308 static const char *skip_linker_arg(const char **str)
1309 {
1310     const char *s1 = *str;
1311     const char *s2 = strchr(s1, ',');
1312     *str = s2 ? s2++ : (s2 = s1 + strlen(s1));
1313     return s2;
1314 }
1315
1316 static void copy_linker_arg(char **pp, const char *s, int sep)
1317 {
1318     const char *q = s;
1319     char *p = *pp;
1320     int l = 0;
1321     if (p && sep)
1322         p[l = strlen(p)] = sep, ++l;
1323     skip_linker_arg(&q);
1324     pstrncpy(l + (*pp = tcc_realloc(p, q - s + l + 1)), s, q - s);
1325 }
1326
1327 /* set linker options */
1328 static int tcc_set_linker(TCCState *s, const char *option)
1329 {
1330     while (*option) {
1331
1332         const char *p = NULL;
1333         char *end = NULL;
1334         int ignoring = 0;
1335         int ret;
1336
1337         if (link_option(option, "Bsymbolic", &p)) {
1338             s->symbolic = 1;
1339         } else if (link_option(option, "nostdlib", &p)) {
1340             s->nostdlib = 1;
1341         } else if (link_option(option, "fini=", &p)) {
1342             copy_linker_arg(&s->fini_symbol, p, 0);
1343             ignoring = 1;
1344         } else if (link_option(option, "image-base=", &p)
1345                 || link_option(option, "Ttext=", &p)) {
1346             s->text_addr = strtoull(p, &end, 16);
1347             s->has_text_addr = 1;
1348         } else if (link_option(option, "init=", &p)) {
1349             copy_linker_arg(&s->init_symbol, p, 0);
1350             ignoring = 1;
1351         } else if (link_option(option, "oformat=", &p)) {
1352 #if defined(TCC_TARGET_PE)
1353             if (strstart("pe-", &p)) {
1354 #elif PTR_SIZE == 8
1355             if (strstart("elf64-", &p)) {
1356 #else
1357             if (strstart("elf32-", &p)) {
1358 #endif
1359                 s->output_format = TCC_OUTPUT_FORMAT_ELF;
1360             } else if (!strcmp(p, "binary")) {
1361                 s->output_format = TCC_OUTPUT_FORMAT_BINARY;
1362 #ifdef TCC_TARGET_COFF
1363             } else if (!strcmp(p, "coff")) {
1364                 s->output_format = TCC_OUTPUT_FORMAT_COFF;
1365 #endif
1366             } else
1367                 goto err;
1368
1369         } else if (link_option(option, "as-needed", &p)) {
1370             ignoring = 1;
1371         } else if (link_option(option, "O", &p)) {
1372             ignoring = 1;
1373         } else if (link_option(option, "export-all-symbols", &p)) {
1374             s->rdynamic = 1;
1375         } else if (link_option(option, "export-dynamic", &p)) {
1376             s->rdynamic = 1;
1377         } else if (link_option(option, "rpath=", &p)) {
1378             copy_linker_arg(&s->rpath, p, ':');
1379         } else if (link_option(option, "enable-new-dtags", &p)) {
1380             s->enable_new_dtags = 1;
1381         } else if (link_option(option, "section-alignment=", &p)) {
1382             s->section_align = strtoul(p, &end, 16);
1383         } else if (link_option(option, "soname=", &p)) {
1384             copy_linker_arg(&s->soname, p, 0);
1385 #ifdef TCC_TARGET_PE
1386         } else if (link_option(option, "large-address-aware", &p)) {
1387             s->pe_characteristics |= 0x20;
1388         } else if (link_option(option, "file-alignment=", &p)) {
1389             s->pe_file_align = strtoul(p, &end, 16);
1390         } else if (link_option(option, "stack=", &p)) {
1391             s->pe_stack_size = strtoul(p, &end, 10);
1392         } else if (link_option(option, "subsystem=", &p)) {
1393 #if defined(TCC_TARGET_I386) || defined(TCC_TARGET_X86_64)
1394             if (!strcmp(p, "native")) {
1395                 s->pe_subsystem = 1;
1396             } else if (!strcmp(p, "console")) {
1397                 s->pe_subsystem = 3;
1398             } else if (!strcmp(p, "gui") || !strcmp(p, "windows")) {
1399                 s->pe_subsystem = 2;
1400             } else if (!strcmp(p, "posix")) {
1401                 s->pe_subsystem = 7;
1402             } else if (!strcmp(p, "efiapp")) {
1403                 s->pe_subsystem = 10;
1404             } else if (!strcmp(p, "efiboot")) {
1405                 s->pe_subsystem = 11;
1406             } else if (!strcmp(p, "efiruntime")) {
1407                 s->pe_subsystem = 12;
1408             } else if (!strcmp(p, "efirom")) {
1409                 s->pe_subsystem = 13;
1410 #elif defined(TCC_TARGET_ARM)
1411             if (!strcmp(p, "wince")) {
1412                 s->pe_subsystem = 9;
1413 #endif
1414             } else
1415                 goto err;
1416 #endif
1417         } else if (ret = link_option(option, "?whole-archive", &p), ret) {
1418             if (ret > 0)
1419                 s->filetype |= AFF_WHOLE_ARCHIVE;
1420             else
1421                 s->filetype &= ~AFF_WHOLE_ARCHIVE;
1422         } else if (p) {
1423             return 0;
1424         } else {
1425     err:
1426             tcc_error("unsupported linker option '%s'", option);
1427         }
1428
1429         if (ignoring && s->warn_unsupported)
1430             tcc_warning("unsupported linker option '%s'", option);
1431
1432         option = skip_linker_arg(&p);
1433     }
1434     return 1;
1435 }
1436
1437 typedef struct TCCOption {
1438     const char *name;
1439     uint16_t index;
1440     uint16_t flags;
1441 } TCCOption;
1442
1443 enum {
1444     TCC_OPTION_HELP,
1445     TCC_OPTION_HELP2,
1446     TCC_OPTION_v,
1447     TCC_OPTION_I,
1448     TCC_OPTION_D,
1449     TCC_OPTION_U,
1450     TCC_OPTION_P,
1451     TCC_OPTION_L,
1452     TCC_OPTION_B,
1453     TCC_OPTION_l,
1454     TCC_OPTION_bench,
1455     TCC_OPTION_bt,
1456     TCC_OPTION_b,
1457     TCC_OPTION_g,
1458     TCC_OPTION_c,
1459     TCC_OPTION_dumpversion,
1460     TCC_OPTION_d,
1461     TCC_OPTION_static,
1462     TCC_OPTION_std,
1463     TCC_OPTION_shared,
1464     TCC_OPTION_soname,
1465     TCC_OPTION_o,
1466     TCC_OPTION_r,
1467     TCC_OPTION_s,
1468     TCC_OPTION_traditional,
1469     TCC_OPTION_Wl,
1470     TCC_OPTION_Wp,
1471     TCC_OPTION_W,
1472     TCC_OPTION_O,
1473     TCC_OPTION_mfloat_abi,
1474     TCC_OPTION_m,
1475     TCC_OPTION_f,
1476     TCC_OPTION_isystem,
1477     TCC_OPTION_iwithprefix,
1478     TCC_OPTION_include,
1479     TCC_OPTION_nostdinc,
1480     TCC_OPTION_nostdlib,
1481     TCC_OPTION_print_search_dirs,
1482     TCC_OPTION_rdynamic,
1483     TCC_OPTION_param,
1484     TCC_OPTION_pedantic,
1485     TCC_OPTION_pthread,
1486     TCC_OPTION_run,
1487     TCC_OPTION_w,
1488     TCC_OPTION_pipe,
1489     TCC_OPTION_E,
1490     TCC_OPTION_MD,
1491     TCC_OPTION_MF,
1492     TCC_OPTION_x,
1493     TCC_OPTION_ar,
1494     TCC_OPTION_impdef
1495 };
1496
1497 #define TCC_OPTION_HAS_ARG 0x0001
1498 #define TCC_OPTION_NOSEP   0x0002 /* cannot have space before option and arg */
1499
1500 static const TCCOption tcc_options[] = {
1501     { "h", TCC_OPTION_HELP, 0 },
1502     { "-help", TCC_OPTION_HELP, 0 },
1503     { "?", TCC_OPTION_HELP, 0 },
1504     { "hh", TCC_OPTION_HELP2, 0 },
1505     { "v", TCC_OPTION_v, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1506     { "I", TCC_OPTION_I, TCC_OPTION_HAS_ARG },
1507     { "D", TCC_OPTION_D, TCC_OPTION_HAS_ARG },
1508     { "U", TCC_OPTION_U, TCC_OPTION_HAS_ARG },
1509     { "P", TCC_OPTION_P, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1510     { "L", TCC_OPTION_L, TCC_OPTION_HAS_ARG },
1511     { "B", TCC_OPTION_B, TCC_OPTION_HAS_ARG },
1512     { "l", TCC_OPTION_l, TCC_OPTION_HAS_ARG },
1513     { "bench", TCC_OPTION_bench, 0 },
1514 #ifdef CONFIG_TCC_BACKTRACE
1515     { "bt", TCC_OPTION_bt, TCC_OPTION_HAS_ARG },
1516 #endif
1517 #ifdef CONFIG_TCC_BCHECK
1518     { "b", TCC_OPTION_b, 0 },
1519 #endif
1520     { "g", TCC_OPTION_g, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1521     { "c", TCC_OPTION_c, 0 },
1522     { "dumpversion", TCC_OPTION_dumpversion, 0},
1523     { "d", TCC_OPTION_d, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1524     { "static", TCC_OPTION_static, 0 },
1525     { "std", TCC_OPTION_std, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1526     { "shared", TCC_OPTION_shared, 0 },
1527     { "soname", TCC_OPTION_soname, TCC_OPTION_HAS_ARG },
1528     { "o", TCC_OPTION_o, TCC_OPTION_HAS_ARG },
1529     { "-param", TCC_OPTION_param, TCC_OPTION_HAS_ARG },
1530     { "pedantic", TCC_OPTION_pedantic, 0},
1531     { "pthread", TCC_OPTION_pthread, 0},
1532     { "run", TCC_OPTION_run, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1533     { "rdynamic", TCC_OPTION_rdynamic, 0 },
1534     { "r", TCC_OPTION_r, 0 },
1535     { "s", TCC_OPTION_s, 0 },
1536     { "traditional", TCC_OPTION_traditional, 0 },
1537     { "Wl,", TCC_OPTION_Wl, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1538     { "Wp,", TCC_OPTION_Wp, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1539     { "W", TCC_OPTION_W, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1540     { "O", TCC_OPTION_O, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1541 #ifdef TCC_TARGET_ARM
1542     { "mfloat-abi", TCC_OPTION_mfloat_abi, TCC_OPTION_HAS_ARG },
1543 #endif
1544     { "m", TCC_OPTION_m, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1545     { "f", TCC_OPTION_f, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1546     { "isystem", TCC_OPTION_isystem, TCC_OPTION_HAS_ARG },
1547     { "include", TCC_OPTION_include, TCC_OPTION_HAS_ARG },
1548     { "nostdinc", TCC_OPTION_nostdinc, 0 },
1549     { "nostdlib", TCC_OPTION_nostdlib, 0 },
1550     { "print-search-dirs", TCC_OPTION_print_search_dirs, 0 },
1551     { "w", TCC_OPTION_w, 0 },
1552     { "pipe", TCC_OPTION_pipe, 0},
1553     { "E", TCC_OPTION_E, 0},
1554     { "MD", TCC_OPTION_MD, 0},
1555     { "MF", TCC_OPTION_MF, TCC_OPTION_HAS_ARG },
1556     { "x", TCC_OPTION_x, TCC_OPTION_HAS_ARG },
1557     { "ar", TCC_OPTION_ar, 0},
1558 #ifdef TCC_TARGET_PE
1559     { "impdef", TCC_OPTION_impdef, 0},
1560 #endif
1561     { NULL, 0, 0 },
1562 };
1563
1564 static const FlagDef options_W[] = {
1565     { 0, 0, "all" },
1566     { offsetof(TCCState, warn_unsupported), 0, "unsupported" },
1567     { offsetof(TCCState, warn_write_strings), 0, "write-strings" },
1568     { offsetof(TCCState, warn_error), 0, "error" },
1569     { offsetof(TCCState, warn_gcc_compat), 0, "gcc-compat" },
1570     { offsetof(TCCState, warn_implicit_function_declaration), WD_ALL,
1571       "implicit-function-declaration" },
1572     { 0, 0, NULL }
1573 };
1574
1575 static const FlagDef options_f[] = {
1576     { offsetof(TCCState, char_is_unsigned), 0, "unsigned-char" },
1577     { offsetof(TCCState, char_is_unsigned), FD_INVERT, "signed-char" },
1578     { offsetof(TCCState, nocommon), FD_INVERT, "common" },
1579     { offsetof(TCCState, leading_underscore), 0, "leading-underscore" },
1580     { offsetof(TCCState, ms_extensions), 0, "ms-extensions" },
1581     { offsetof(TCCState, dollars_in_identifiers), 0, "dollars-in-identifiers" },
1582     { 0, 0, NULL }
1583 };
1584
1585 static const FlagDef options_m[] = {
1586     { offsetof(TCCState, ms_bitfields), 0, "ms-bitfields" },
1587 #ifdef TCC_TARGET_X86_64
1588     { offsetof(TCCState, nosse), FD_INVERT, "sse" },
1589 #endif
1590     { 0, 0, NULL }
1591 };
1592
1593 static void parse_option_D(TCCState *s1, const char *optarg)
1594 {
1595     char *sym = tcc_strdup(optarg);
1596     char *value = strchr(sym, '=');
1597     if (value)
1598         *value++ = '\0';
1599     tcc_define_symbol(s1, sym, value);
1600     tcc_free(sym);
1601 }
1602
1603 static void args_parser_add_file(TCCState *s, const char* filename, int filetype)
1604 {
1605     struct filespec *f = tcc_malloc(sizeof *f + strlen(filename));
1606     f->type = filetype;
1607     strcpy(f->name, filename);
1608     dynarray_add(&s->files, &s->nb_files, f);
1609 }
1610
1611 static int args_parser_make_argv(const char *r, int *argc, char ***argv)
1612 {
1613     int ret = 0, q, c;
1614     CString str;
1615     for(;;) {
1616         while (c = (unsigned char)*r, c && c <= ' ')
1617           ++r;
1618         if (c == 0)
1619             break;
1620         q = 0;
1621         cstr_new(&str);
1622         while (c = (unsigned char)*r, c) {
1623             ++r;
1624             if (c == '\\' && (*r == '"' || *r == '\\')) {
1625                 c = *r++;
1626             } else if (c == '"') {
1627                 q = !q;
1628                 continue;
1629             } else if (q == 0 && c <= ' ') {
1630                 break;
1631             }
1632             cstr_ccat(&str, c);
1633         }
1634         cstr_ccat(&str, 0);
1635         //printf("<%s>\n", str.data), fflush(stdout);
1636         dynarray_add(argv, argc, tcc_strdup(str.data));
1637         cstr_free(&str);
1638         ++ret;
1639     }
1640     return ret;
1641 }
1642
1643 /* read list file */
1644 static void args_parser_listfile(TCCState *s,
1645     const char *filename, int optind, int *pargc, char ***pargv)
1646 {
1647     int fd, i;
1648     size_t len;
1649     char *p;
1650     int argc = 0;
1651     char **argv = NULL;
1652
1653     fd = open(filename, O_RDONLY | O_BINARY);
1654     if (fd < 0)
1655         tcc_error("listfile '%s' not found", filename);
1656
1657     len = lseek(fd, 0, SEEK_END);
1658     p = tcc_malloc(len + 1), p[len] = 0;
1659     lseek(fd, 0, SEEK_SET), read(fd, p, len), close(fd);
1660
1661     for (i = 0; i < *pargc; ++i)
1662         if (i == optind)
1663             args_parser_make_argv(p, &argc, &argv);
1664         else
1665             dynarray_add(&argv, &argc, tcc_strdup((*pargv)[i]));
1666
1667     tcc_free(p);
1668     dynarray_reset(&s->argv, &s->argc);
1669     *pargc = s->argc = argc, *pargv = s->argv = argv;
1670 }
1671
1672 PUB_FUNC int tcc_parse_args(TCCState *s, int *pargc, char ***pargv, int optind)
1673 {
1674     const TCCOption *popt;
1675     const char *optarg, *r;
1676     const char *run = NULL;
1677     int last_o = -1;
1678     int x;
1679     CString linker_arg; /* collect -Wl options */
1680     int tool = 0, arg_start = 0, noaction = optind;
1681     char **argv = *pargv;
1682     int argc = *pargc;
1683
1684     cstr_new(&linker_arg);
1685
1686     while (optind < argc) {
1687         r = argv[optind];
1688         if (r[0] == '@' && r[1] != '\0') {
1689             args_parser_listfile(s, r + 1, optind, &argc, &argv);
1690             continue;
1691         }
1692         optind++;
1693         if (tool) {
1694             if (r[0] == '-' && r[1] == 'v' && r[2] == 0)
1695                 ++s->verbose;
1696             continue;
1697         }
1698 reparse:
1699         if (r[0] != '-' || r[1] == '\0') {
1700             if (r[0] != '@') /* allow "tcc file(s) -run @ args ..." */
1701                 args_parser_add_file(s, r, s->filetype);
1702             if (run) {
1703                 tcc_set_options(s, run);
1704                 arg_start = optind - 1;
1705                 break;
1706             }
1707             continue;
1708         }
1709
1710         /* find option in table */
1711         for(popt = tcc_options; ; ++popt) {
1712             const char *p1 = popt->name;
1713             const char *r1 = r + 1;
1714             if (p1 == NULL)
1715                 tcc_error("invalid option -- '%s'", r);
1716             if (!strstart(p1, &r1))
1717                 continue;
1718             optarg = r1;
1719             if (popt->flags & TCC_OPTION_HAS_ARG) {
1720                 if (*r1 == '\0' && !(popt->flags & TCC_OPTION_NOSEP)) {
1721                     if (optind >= argc)
1722                 arg_err:
1723                         tcc_error("argument to '%s' is missing", r);
1724                     optarg = argv[optind++];
1725                 }
1726             } else if (*r1 != '\0')
1727                 continue;
1728             break;
1729         }
1730
1731         switch(popt->index) {
1732         case TCC_OPTION_HELP:
1733             return OPT_HELP;
1734         case TCC_OPTION_HELP2:
1735             return OPT_HELP2;
1736         case TCC_OPTION_I:
1737             tcc_add_include_path(s, optarg);
1738             break;
1739         case TCC_OPTION_D:
1740             parse_option_D(s, optarg);
1741             break;
1742         case TCC_OPTION_U:
1743             tcc_undefine_symbol(s, optarg);
1744             break;
1745         case TCC_OPTION_L:
1746             tcc_add_library_path(s, optarg);
1747             break;
1748         case TCC_OPTION_B:
1749             /* set tcc utilities path (mainly for tcc development) */
1750             tcc_set_lib_path(s, optarg);
1751             break;
1752         case TCC_OPTION_l:
1753             args_parser_add_file(s, optarg, AFF_TYPE_LIB | (s->filetype & ~AFF_TYPE_MASK));
1754             s->nb_libraries++;
1755             break;
1756         case TCC_OPTION_pthread:
1757             parse_option_D(s, "_REENTRANT");
1758             s->option_pthread = 1;
1759             break;
1760         case TCC_OPTION_bench:
1761             s->do_bench = 1;
1762             break;
1763 #ifdef CONFIG_TCC_BACKTRACE
1764         case TCC_OPTION_bt:
1765             tcc_set_num_callers(atoi(optarg));
1766             break;
1767 #endif
1768 #ifdef CONFIG_TCC_BCHECK
1769         case TCC_OPTION_b:
1770             s->do_bounds_check = 1;
1771             s->do_debug = 1;
1772             break;
1773 #endif
1774         case TCC_OPTION_g:
1775             s->do_debug = 1;
1776             break;
1777         case TCC_OPTION_c:
1778             x = TCC_OUTPUT_OBJ;
1779         set_output_type:
1780             if (s->output_type)
1781                 tcc_warning("-%s: overriding compiler action already specified", popt->name);
1782             s->output_type = x;
1783             break;
1784         case TCC_OPTION_d:
1785             if (*optarg == 'D')
1786                 s->dflag = 3;
1787             else if (*optarg == 'M')
1788                 s->dflag = 7;
1789             else if (*optarg == 't')
1790                 s->dflag = 16;
1791             else if (isnum(*optarg))
1792                 g_debug = atoi(optarg);
1793             else
1794                 goto unsupported_option;
1795             break;
1796         case TCC_OPTION_static:
1797             s->static_link = 1;
1798             break;
1799         case TCC_OPTION_std:
1800             if (*optarg == '=') {
1801                 if (strcmp(optarg, "=c11") == 0) {
1802                     tcc_undefine_symbol(s, "__STDC_VERSION__");
1803                     tcc_define_symbol(s, "__STDC_VERSION__", "201112L");
1804                     /*
1805                      * The integer constant 1, intended to indicate
1806                      * that the implementation does not support atomic
1807                      * types (including the _Atomic type qualiﬁer) and
1808                      * the <stdatomic.h> header.
1809                      */
1810                     tcc_define_symbol(s, "__STDC_NO_ATOMICS__", "1");
1811                     /*
1812                      * The integer constant 1, intended to indicate
1813                      * that the implementation does not support complex
1814                      * types or the <complex.h> header.
1815                      */
1816                     tcc_define_symbol(s, "__STDC_NO_COMPLEX__", "1");
1817                     /*
1818                      * The integer constant 1, intended to indicate
1819                      * that the implementation does not support the
1820                      * <threads.h> header.
1821                      */
1822                     tcc_define_symbol(s, "__STDC_NO_THREADS__", "1");
1823                     /*
1824                      * __STDC_NO_VLA__, tcc supports VLA.
1825                      * The integer constant 1, intended to indicate
1826                      * that the implementation does not support
1827                      * variable length arrays or variably modiﬁed
1828                      * types.
1829                      */
1830 #if !defined(TCC_TARGET_PE)
1831                     /*
1832                      * An integer constant of the form yyyymmL (for
1833                      * example, 199712L). If this symbol is deﬁned,
1834                      * then every character in the Unicode required
1835                      * set, when stored in an object of type
1836                      * wchar_t, has the same value as the short
1837                      * identiﬁer of that character.
1838                      */
1839                     #if 0
1840                     /* on Linux, this conflicts with a define introduced by
1841                      * /usr/include/stdc-predef.h included by glibc libs;
1842                      * clang doesn't define it at all so it's probably not necessary
1843                      */
1844                     tcc_define_symbol(s, "__STDC_ISO_10646__", "201605L");
1845                     #endif
1846                     /*
1847                      * The integer constant 1, intended to indicate
1848                      * that values of type char16_t are UTF−16
1849                      * encoded. If some other encoding is used, the
1850                      * macro shall not be deﬁned and the actual
1851                      * encoding used is implementation deﬁned.
1852                      */
1853                     tcc_define_symbol(s, "__STDC_UTF_16__", "1");
1854                     /*
1855                      * The integer constant 1, intended to indicate
1856                      * that values of type char32_t are UTF−32
1857                      * encoded. If some other encoding is used, the
1858                      * macro shall not be deﬁned and the actual
1859                      * encoding used is implementationdeﬁned.
1860                      */
1861                     tcc_define_symbol(s, "__STDC_UTF_32__", "1");
1862 #endif /* !TCC_TARGET_PE */
1863                     s->cversion = 201112;
1864                 }
1865             }
1866             /*
1867              * silently ignore other values, a current purpose:
1868              * allow to use a tcc as a reference compiler for "make test"
1869              */
1870             break;
1871         case TCC_OPTION_shared:
1872             x = TCC_OUTPUT_DLL;
1873             goto set_output_type;
1874         case TCC_OPTION_soname:
1875             s->soname = tcc_strdup(optarg);
1876             break;
1877         case TCC_OPTION_o:
1878             if (s->outfile) {
1879                 tcc_warning("multiple -o option");
1880                 tcc_free(s->outfile);
1881             }
1882             s->outfile = tcc_strdup(optarg);
1883             break;
1884         case TCC_OPTION_r:
1885             /* generate a .o merging several output files */
1886             s->option_r = 1;
1887             x = TCC_OUTPUT_OBJ;
1888             goto set_output_type;
1889         case TCC_OPTION_isystem:
1890             tcc_add_sysinclude_path(s, optarg);
1891             break;
1892         case TCC_OPTION_include:
1893             dynarray_add(&s->cmd_include_files,
1894                          &s->nb_cmd_include_files, tcc_strdup(optarg));
1895             break;
1896         case TCC_OPTION_nostdinc:
1897             s->nostdinc = 1;
1898             break;
1899         case TCC_OPTION_nostdlib:
1900             s->nostdlib = 1;
1901             break;
1902         case TCC_OPTION_run:
1903 #ifndef TCC_IS_NATIVE
1904             tcc_error("-run is not available in a cross compiler");
1905 #endif
1906             run = optarg;
1907             x = TCC_OUTPUT_MEMORY;
1908             goto set_output_type;
1909         case TCC_OPTION_v:
1910             do ++s->verbose; while (*optarg++ == 'v');
1911             ++noaction;
1912             break;
1913         case TCC_OPTION_f:
1914             if (set_flag(s, options_f, optarg) < 0)
1915                 goto unsupported_option;
1916             break;
1917 #ifdef TCC_TARGET_ARM
1918         case TCC_OPTION_mfloat_abi:
1919             /* tcc doesn't support soft float yet */
1920             if (!strcmp(optarg, "softfp")) {
1921                 s->float_abi = ARM_SOFTFP_FLOAT;
1922                 tcc_undefine_symbol(s, "__ARM_PCS_VFP");
1923             } else if (!strcmp(optarg, "hard"))
1924                 s->float_abi = ARM_HARD_FLOAT;
1925             else
1926                 tcc_error("unsupported float abi '%s'", optarg);
1927             break;
1928 #endif
1929         case TCC_OPTION_m:
1930             if (set_flag(s, options_m, optarg) < 0) {
1931                 if (x = atoi(optarg), x != 32 && x != 64)
1932                     goto unsupported_option;
1933                 if (PTR_SIZE != x/8)
1934                     return x;
1935                 ++noaction;
1936             }
1937             break;
1938         case TCC_OPTION_W:
1939             if (set_flag(s, options_W, optarg) < 0)
1940                 goto unsupported_option;
1941             break;
1942         case TCC_OPTION_w:
1943             s->warn_none = 1;
1944             break;
1945         case TCC_OPTION_rdynamic:
1946             s->rdynamic = 1;
1947             break;
1948         case TCC_OPTION_Wl:
1949             if (linker_arg.size)
1950                 --linker_arg.size, cstr_ccat(&linker_arg, ',');
1951             cstr_cat(&linker_arg, optarg, 0);
1952             if (tcc_set_linker(s, linker_arg.data))
1953                 cstr_free(&linker_arg);
1954             break;
1955         case TCC_OPTION_Wp:
1956             r = optarg;
1957             goto reparse;
1958         case TCC_OPTION_E:
1959             x = TCC_OUTPUT_PREPROCESS;
1960             goto set_output_type;
1961         case TCC_OPTION_P:
1962             s->Pflag = atoi(optarg) + 1;
1963             break;
1964         case TCC_OPTION_MD:
1965             s->gen_deps = 1;
1966             break;
1967         case TCC_OPTION_MF:
1968             s->deps_outfile = tcc_strdup(optarg);
1969             break;
1970         case TCC_OPTION_dumpversion:
1971             printf ("%s\n", TCC_VERSION);
1972             exit(0);
1973             break;
1974         case TCC_OPTION_x:
1975             x = 0;
1976             if (*optarg == 'c')
1977                 x = AFF_TYPE_C;
1978             else if (*optarg == 'a')
1979                 x = AFF_TYPE_ASMPP;
1980             else if (*optarg == 'b')
1981                 x = AFF_TYPE_BIN;
1982             else if (*optarg == 'n')
1983                 x = AFF_TYPE_NONE;
1984             else
1985                 tcc_warning("unsupported language '%s'", optarg);
1986             s->filetype = x | (s->filetype & ~AFF_TYPE_MASK);
1987             break;
1988         case TCC_OPTION_O:
1989             last_o = atoi(optarg);
1990             break;
1991         case TCC_OPTION_print_search_dirs:
1992             x = OPT_PRINT_DIRS;
1993             goto extra_action;
1994         case TCC_OPTION_impdef:
1995             x = OPT_IMPDEF;
1996             goto extra_action;
1997         case TCC_OPTION_ar:
1998             x = OPT_AR;
1999         extra_action:
2000             arg_start = optind - 1;
2001             if (arg_start != noaction)
2002                 tcc_error("cannot parse %s here", r);
2003             tool = x;
2004             break;
2005         case TCC_OPTION_traditional:
2006         case TCC_OPTION_pedantic:
2007         case TCC_OPTION_pipe:
2008         case TCC_OPTION_s:
2009             /* ignored */
2010             break;
2011         default:
2012 unsupported_option:
2013             if (s->warn_unsupported)
2014                 tcc_warning("unsupported option '%s'", r);
2015             break;
2016         }
2017     }
2018     if (last_o > 0)
2019         tcc_define_symbol(s, "__OPTIMIZE__", NULL);
2020     if (linker_arg.size) {
2021         r = linker_arg.data;
2022         goto arg_err;
2023     }
2024     *pargc = argc - arg_start;
2025     *pargv = argv + arg_start;
2026     if (tool)
2027         return tool;
2028     if (optind != noaction)
2029         return 0;
2030     if (s->verbose == 2)
2031         return OPT_PRINT_DIRS;
2032     if (s->verbose)
2033         return OPT_V;
2034     return OPT_HELP;
2035 }
2036
2037 LIBTCCAPI void tcc_set_options(TCCState *s, const char *r)
2038 {
2039     char **argv = NULL;
2040     int argc = 0;
2041     args_parser_make_argv(r, &argc, &argv);
2042     tcc_parse_args(s, &argc, &argv, 0);
2043     dynarray_reset(&argv, &argc);
2044 }
2045
2046 PUB_FUNC void tcc_print_stats(TCCState *s, unsigned total_time)
2047 {
2048     if (total_time < 1)
2049         total_time = 1;
2050     if (total_bytes < 1)
2051         total_bytes = 1;
2052     fprintf(stderr, "* %d idents, %d lines, %d bytes\n"
2053                     "* %0.3f s, %u lines/s, %0.1f MB/s\n",
2054            tok_ident - TOK_IDENT, total_lines, total_bytes,
2055            (double)total_time/1000,
2056            (unsigned)total_lines*1000/total_time,
2057            (double)total_bytes/1000/total_time);
2058 #ifdef MEM_DEBUG
2059     fprintf(stderr, "* %d bytes memory used\n", mem_max_size);
2060 #endif
2061 }