libtcc.c

   1 /*
   2  *  TCC - Tiny C Compiler
   3  *
   4  *  Copyright (c) 2001-2004 Fabrice Bellard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #if !defined ONE_SOURCE || ONE_SOURCE
  22 #include "tccpp.c"
  23 #include "tccgen.c"
  24 #include "tccelf.c"
  25 #include "tccrun.c"
  26 #ifdef TCC_TARGET_I386
  27 #include "i386-gen.c"
  28 #include "i386-link.c"
  29 #include "i386-asm.c"
  30 #elif defined(TCC_TARGET_ARM)
  31 #include "arm-gen.c"
  32 #include "arm-link.c"
  33 #include "arm-asm.c"
  34 #elif defined(TCC_TARGET_ARM64)
  35 #include "arm64-gen.c"
  36 #include "arm64-link.c"
  37 #elif defined(TCC_TARGET_C67)
  38 #include "c67-gen.c"
  39 #include "c67-link.c"
  40 #include "tcccoff.c"
  41 #elif defined(TCC_TARGET_X86_64)
  42 #include "x86_64-gen.c"
  43 #include "x86_64-link.c"
  44 #include "i386-asm.c"
  45 #elif defined(TCC_TARGET_RISCV64)
  46 #include "riscv64-gen.c"
  47 #include "riscv64-link.c"
  48 #else
  49 #error unknown target
  50 #endif
  51 #ifdef CONFIG_TCC_ASM
  52 #include "tccasm.c"
  53 #endif
  54 #ifdef TCC_TARGET_PE
  55 #include "tccpe.c"
  56 #endif
  57 #endif /* ONE_SOURCE */
  58
  59 #include "tcc.h"
  60
  61 /********************************************************/
  62 /* global variables */
  63
  64 /* XXX: get rid of this ASAP (or maybe not) */
  65 ST_DATA struct TCCState *tcc_state;
  66
  67 static int nb_states;
  68
  69 /********************************************************/
  70 #ifdef _WIN32
  71 ST_FUNC char *normalize_slashes(char *path)
  72 {
  73     char *p;
  74     for (p = path; *p; ++p)
  75         if (*p == '\\')
  76             *p = '/';
  77     return path;
  78 }
  79
  80 static HMODULE tcc_module;
  81
  82 /* on win32, we suppose the lib and includes are at the location of 'tcc.exe' */
  83 static void tcc_set_lib_path_w32(TCCState *s)
  84 {
  85     char path[1024], *p;
  86     GetModuleFileNameA(tcc_module, path, sizeof path);
  87     p = tcc_basename(normalize_slashes(strlwr(path)));
  88     if (p > path)
  89         --p;
  90     *p = 0;
  91     tcc_set_lib_path(s, path);
  92 }
  93
  94 #ifdef TCC_TARGET_PE
  95 static void tcc_add_systemdir(TCCState *s)
  96 {
  97     char buf[1000];
  98     GetSystemDirectory(buf, sizeof buf);
  99     tcc_add_library_path(s, normalize_slashes(buf));
 100 }
 101 #endif
 102
 103 #ifdef LIBTCC_AS_DLL
 104 BOOL WINAPI DllMain (HINSTANCE hDll, DWORD dwReason, LPVOID lpReserved)
 105 {
 106     if (DLL_PROCESS_ATTACH == dwReason)
 107         tcc_module = hDll;
 108     return TRUE;
 109 }
 110 #endif
 111 #endif
 112
 113 /********************************************************/
 114 #ifndef CONFIG_TCC_SEMLOCK
 115 #define WAIT_SEM()
 116 #define POST_SEM()
 117 #elif defined _WIN32
 118 static int tcc_sem_init;
 119 static CRITICAL_SECTION tcc_cr;
 120 static void wait_sem(void)
 121 {
 122     if (!tcc_sem_init)
 123         InitializeCriticalSection(&tcc_cr), tcc_sem_init = 1;
 124     EnterCriticalSection(&tcc_cr);
 125 }
 126 #define WAIT_SEM() wait_sem()
 127 #define POST_SEM() LeaveCriticalSection(&tcc_cr);
 128 #else
 129 #include <semaphore.h>
 130 static int tcc_sem_init;
 131 static sem_t tcc_sem;
 132 static void wait_sem(void)
 133 {
 134     if (!tcc_sem_init)
 135         sem_init(&tcc_sem, 0, 1), tcc_sem_init = 1;
 136     while (sem_wait (&tcc_sem) < 0 && errno == EINTR);
 137 }
 138 #define WAIT_SEM() wait_sem()
 139 #define POST_SEM() sem_post(&tcc_sem)
 140 #endif
 141
 142 /********************************************************/
 143 /* copy a string and truncate it. */
 144 ST_FUNC char *pstrcpy(char *buf, size_t buf_size, const char *s)
 145 {
 146     char *q, *q_end;
 147     int c;
 148
 149     if (buf_size > 0) {
 150         q = buf;
 151         q_end = buf + buf_size - 1;
 152         while (q < q_end) {
 153             c = *s++;
 154             if (c == '\0')
 155                 break;
 156             *q++ = c;
 157         }
 158         *q = '\0';
 159     }
 160     return buf;
 161 }
 162
 163 /* strcat and truncate. */
 164 ST_FUNC char *pstrcat(char *buf, size_t buf_size, const char *s)
 165 {
 166     size_t len;
 167     len = strlen(buf);
 168     if (len < buf_size)
 169         pstrcpy(buf + len, buf_size - len, s);
 170     return buf;
 171 }
 172
 173 ST_FUNC char *pstrncpy(char *out, const char *in, size_t num)
 174 {
 175     memcpy(out, in, num);
 176     out[num] = '\0';
 177     return out;
 178 }
 179
 180 /* extract the basename of a file */
 181 PUB_FUNC char *tcc_basename(const char *name)
 182 {
 183     char *p = strchr(name, 0);
 184     while (p > name && !IS_DIRSEP(p[-1]))
 185         --p;
 186     return p;
 187 }
 188
 189 /* extract extension part of a file
 190  *
 191  * (if no extension, return pointer to end-of-string)
 192  */
 193 PUB_FUNC char *tcc_fileextension (const char *name)
 194 {
 195     char *b = tcc_basename(name);
 196     char *e = strrchr(b, '.');
 197     return e ? e : strchr(b, 0);
 198 }
 199
 200 /********************************************************/
 201 /* memory management */
 202
 203 #undef free
 204 #undef malloc
 205 #undef realloc
 206
 207 #ifndef MEM_DEBUG
 208
 209 PUB_FUNC void tcc_free(void *ptr)
 210 {
 211     free(ptr);
 212 }
 213
 214 PUB_FUNC void *tcc_malloc(unsigned long size)
 215 {
 216     void *ptr;
 217     ptr = malloc(size);
 218     if (!ptr && size)
 219         _tcc_error("memory full (malloc)");
 220     return ptr;
 221 }
 222
 223 PUB_FUNC void *tcc_mallocz(unsigned long size)
 224 {
 225     void *ptr;
 226     ptr = tcc_malloc(size);
 227     memset(ptr, 0, size);
 228     return ptr;
 229 }
 230
 231 PUB_FUNC void *tcc_realloc(void *ptr, unsigned long size)
 232 {
 233     void *ptr1;
 234     ptr1 = realloc(ptr, size);
 235     if (!ptr1 && size)
 236         _tcc_error("memory full (realloc)");
 237     return ptr1;
 238 }
 239
 240 PUB_FUNC char *tcc_strdup(const char *str)
 241 {
 242     char *ptr;
 243     ptr = tcc_malloc(strlen(str) + 1);
 244     strcpy(ptr, str);
 245     return ptr;
 246 }
 247
 248 PUB_FUNC void tcc_memcheck(void)
 249 {
 250 }
 251
 252 #else
 253
 254 #define MEM_DEBUG_MAGIC1 0xFEEDDEB1
 255 #define MEM_DEBUG_MAGIC2 0xFEEDDEB2
 256 #define MEM_DEBUG_MAGIC3 0xFEEDDEB3
 257 #define MEM_DEBUG_FILE_LEN 40
 258 #define MEM_DEBUG_CHECK3(header) \
 259     ((mem_debug_header_t*)((char*)header + header->size))->magic3
 260 #define MEM_USER_PTR(header) \
 261     ((char *)header + offsetof(mem_debug_header_t, magic3))
 262 #define MEM_HEADER_PTR(ptr) \
 263     (mem_debug_header_t *)((char*)ptr - offsetof(mem_debug_header_t, magic3))
 264
 265 struct mem_debug_header {
 266     unsigned magic1;
 267     unsigned size;
 268     struct mem_debug_header *prev;
 269     struct mem_debug_header *next;
 270     int line_num;
 271     char file_name[MEM_DEBUG_FILE_LEN + 1];
 272     unsigned magic2;
 273     ALIGNED(16) unsigned magic3;
 274 };
 275
 276 typedef struct mem_debug_header mem_debug_header_t;
 277
 278 static mem_debug_header_t *mem_debug_chain;
 279 static unsigned mem_cur_size;
 280 static unsigned mem_max_size;
 281
 282 static mem_debug_header_t *malloc_check(void *ptr, const char *msg)
 283 {
 284     mem_debug_header_t * header = MEM_HEADER_PTR(ptr);
 285     if (header->magic1 != MEM_DEBUG_MAGIC1 ||
 286         header->magic2 != MEM_DEBUG_MAGIC2 ||
 287         MEM_DEBUG_CHECK3(header) != MEM_DEBUG_MAGIC3 ||
 288         header->size == (unsigned)-1) {
 289         fprintf(stderr, "%s check failed\n", msg);
 290         if (header->magic1 == MEM_DEBUG_MAGIC1)
 291             fprintf(stderr, "%s:%u: block allocated here.\n",
 292                 header->file_name, header->line_num);
 293         exit(1);
 294     }
 295     return header;
 296 }
 297
 298 PUB_FUNC void *tcc_malloc_debug(unsigned long size, const char *file, int line)
 299 {
 300     int ofs;
 301     mem_debug_header_t *header;
 302
 303     header = malloc(sizeof(mem_debug_header_t) + size);
 304     if (!header)
 305         _tcc_error("memory full (malloc)");
 306
 307     header->magic1 = MEM_DEBUG_MAGIC1;
 308     header->magic2 = MEM_DEBUG_MAGIC2;
 309     header->size = size;
 310     MEM_DEBUG_CHECK3(header) = MEM_DEBUG_MAGIC3;
 311     header->line_num = line;
 312     ofs = strlen(file) - MEM_DEBUG_FILE_LEN;
 313     strncpy(header->file_name, file + (ofs > 0 ? ofs : 0), MEM_DEBUG_FILE_LEN);
 314     header->file_name[MEM_DEBUG_FILE_LEN] = 0;
 315
 316     header->next = mem_debug_chain;
 317     header->prev = NULL;
 318     if (header->next)
 319         header->next->prev = header;
 320     mem_debug_chain = header;
 321
 322     mem_cur_size += size;
 323     if (mem_cur_size > mem_max_size)
 324         mem_max_size = mem_cur_size;
 325
 326     return MEM_USER_PTR(header);
 327 }
 328
 329 PUB_FUNC void tcc_free_debug(void *ptr)
 330 {
 331     mem_debug_header_t *header;
 332     if (!ptr)
 333         return;
 334     header = malloc_check(ptr, "tcc_free");
 335     mem_cur_size -= header->size;
 336     header->size = (unsigned)-1;
 337     if (header->next)
 338         header->next->prev = header->prev;
 339     if (header->prev)
 340         header->prev->next = header->next;
 341     if (header == mem_debug_chain)
 342         mem_debug_chain = header->next;
 343     free(header);
 344 }
 345
 346 PUB_FUNC void *tcc_mallocz_debug(unsigned long size, const char *file, int line)
 347 {
 348     void *ptr;
 349     ptr = tcc_malloc_debug(size,file,line);
 350     memset(ptr, 0, size);
 351     return ptr;
 352 }
 353
 354 PUB_FUNC void *tcc_realloc_debug(void *ptr, unsigned long size, const char *file, int line)
 355 {
 356     mem_debug_header_t *header;
 357     int mem_debug_chain_update = 0;
 358     if (!ptr)
 359         return tcc_malloc_debug(size, file, line);
 360     header = malloc_check(ptr, "tcc_realloc");
 361     mem_cur_size -= header->size;
 362     mem_debug_chain_update = (header == mem_debug_chain);
 363     header = realloc(header, sizeof(mem_debug_header_t) + size);
 364     if (!header)
 365         _tcc_error("memory full (realloc)");
 366     header->size = size;
 367     MEM_DEBUG_CHECK3(header) = MEM_DEBUG_MAGIC3;
 368     if (header->next)
 369         header->next->prev = header;
 370     if (header->prev)
 371         header->prev->next = header;
 372     if (mem_debug_chain_update)
 373         mem_debug_chain = header;
 374     mem_cur_size += size;
 375     if (mem_cur_size > mem_max_size)
 376         mem_max_size = mem_cur_size;
 377     return MEM_USER_PTR(header);
 378 }
 379
 380 PUB_FUNC char *tcc_strdup_debug(const char *str, const char *file, int line)
 381 {
 382     char *ptr;
 383     ptr = tcc_malloc_debug(strlen(str) + 1, file, line);
 384     strcpy(ptr, str);
 385     return ptr;
 386 }
 387
 388 PUB_FUNC void tcc_memcheck(void)
 389 {
 390     if (mem_cur_size) {
 391         mem_debug_header_t *header = mem_debug_chain;
 392         fprintf(stderr, "MEM_DEBUG: mem_leak= %d bytes, mem_max_size= %d bytes\n",
 393             mem_cur_size, mem_max_size);
 394         while (header) {
 395             fprintf(stderr, "%s:%u: error: %u bytes leaked\n",
 396                 header->file_name, header->line_num, header->size);
 397             header = header->next;
 398         }
 399 #if MEM_DEBUG-0 == 2
 400         exit(2);
 401 #endif
 402     }
 403 }
 404 #endif /* MEM_DEBUG */
 405
 406 #define free(p) use_tcc_free(p)
 407 #define malloc(s) use_tcc_malloc(s)
 408 #define realloc(p, s) use_tcc_realloc(p, s)
 409
 410 /********************************************************/
 411 /* dynarrays */
 412
 413 ST_FUNC void dynarray_add(void *ptab, int *nb_ptr, void *data)
 414 {
 415     int nb, nb_alloc;
 416     void **pp;
 417
 418     nb = *nb_ptr;
 419     pp = *(void ***)ptab;
 420     /* every power of two we double array size */
 421     if ((nb & (nb - 1)) == 0) {
 422         if (!nb)
 423             nb_alloc = 1;
 424         else
 425             nb_alloc = nb * 2;
 426         pp = tcc_realloc(pp, nb_alloc * sizeof(void *));
 427         *(void***)ptab = pp;
 428     }
 429     pp[nb++] = data;
 430     *nb_ptr = nb;
 431 }
 432
 433 ST_FUNC void dynarray_reset(void *pp, int *n)
 434 {
 435     void **p;
 436     for (p = *(void***)pp; *n; ++p, --*n)
 437         if (*p)
 438             tcc_free(*p);
 439     tcc_free(*(void**)pp);
 440     *(void**)pp = NULL;
 441 }
 442
 443 static void tcc_split_path(TCCState *s, void *p_ary, int *p_nb_ary, const char *in)
 444 {
 445     const char *p;
 446     do {
 447         int c;
 448         CString str;
 449
 450         cstr_new(&str);
 451         for (p = in; c = *p, c != '\0' && c != PATHSEP[0]; ++p) {
 452             if (c == '{' && p[1] && p[2] == '}') {
 453                 c = p[1], p += 2;
 454                 if (c == 'B')
 455                     cstr_cat(&str, s->tcc_lib_path, -1);
 456             } else {
 457                 cstr_ccat(&str, c);
 458             }
 459         }
 460         if (str.size) {
 461             cstr_ccat(&str, '\0');
 462             dynarray_add(p_ary, p_nb_ary, tcc_strdup(str.data));
 463         }
 464         cstr_free(&str);
 465         in = p+1;
 466     } while (*p);
 467 }
 468
 469 /********************************************************/
 470
 471 static void strcat_vprintf(char *buf, int buf_size, const char *fmt, va_list ap)
 472 {
 473     int len;
 474     len = strlen(buf);
 475     vsnprintf(buf + len, buf_size - len, fmt, ap);
 476 }
 477
 478 static void strcat_printf(char *buf, int buf_size, const char *fmt, ...)
 479 {
 480     va_list ap;
 481     va_start(ap, fmt);
 482     strcat_vprintf(buf, buf_size, fmt, ap);
 483     va_end(ap);
 484 }
 485
 486 #define ERROR_WARN 0
 487 #define ERROR_NOABORT 1
 488 #define ERROR_ERROR 2
 489
 490 PUB_FUNC void tcc_enter_state(TCCState *s1)
 491 {
 492     WAIT_SEM();
 493     tcc_state = s1;
 494 }
 495
 496 static void error1(int mode, const char *fmt, va_list ap)
 497 {
 498     char buf[2048];
 499     BufferedFile **pf, *f;
 500     TCCState *s1 = tcc_state;
 501
 502     /* 's1->error_set_jmp_enabled' means that we're called from
 503         within the parser/generator and 'tcc_state' was already
 504         set (i.e. not by the function above).
 505
 506         Otherwise, 's1 = NULL' means we're called because of severe
 507         problems from tcc_malloc() which under normal conditions
 508         should never happen. */
 509
 510     if (s1 && !s1->error_set_jmp_enabled) {
 511         tcc_state = NULL;
 512         POST_SEM();
 513     }
 514
 515     if (mode == ERROR_WARN) {
 516         if (s1->warn_none)
 517             return;
 518         if (s1->warn_error)
 519             mode = ERROR_ERROR;
 520     }
 521
 522     buf[0] = '\0';
 523     /* use upper file if inline ":asm:" or token ":paste:" */
 524     for (f = file; f && f->filename[0] == ':'; f = f->prev)
 525      ;
 526     if (f) {
 527         for(pf = s1->include_stack; pf < s1->include_stack_ptr; pf++)
 528             strcat_printf(buf, sizeof(buf), "In file included from %s:%d:\n",
 529                 (*pf)->filename, (*pf)->line_num);
 530         if (s1->error_set_jmp_enabled) {
 531             strcat_printf(buf, sizeof(buf), "%s:%d: ",
 532                 f->filename, f->line_num - !!(tok_flags & TOK_FLAG_BOL));
 533         } else {
 534             strcat_printf(buf, sizeof(buf), "%s: ",
 535                 f->filename);
 536         }
 537     } else {
 538         strcat_printf(buf, sizeof(buf), "tcc: ");
 539     }
 540     if (mode == ERROR_WARN)
 541         strcat_printf(buf, sizeof(buf), "warning: ");
 542     else
 543         strcat_printf(buf, sizeof(buf), "error: ");
 544     strcat_vprintf(buf, sizeof(buf), fmt, ap);
 545     if (!s1 || !s1->error_func) {
 546         /* default case: stderr */
 547         if (s1 && s1->output_type == TCC_OUTPUT_PREPROCESS && s1->ppfp == stdout)
 548             /* print a newline during tcc -E */
 549             printf("\n"), fflush(stdout);
 550         fflush(stdout); /* flush -v output */
 551         fprintf(stderr, "%s\n", buf);
 552         fflush(stderr); /* print error/warning now (win32) */
 553     } else {
 554         s1->error_func(s1->error_opaque, buf);
 555     }
 556     if (s1) {
 557         if (mode != ERROR_WARN)
 558             s1->nb_errors++;
 559         if (mode != ERROR_ERROR)
 560             return;
 561         if (s1->error_set_jmp_enabled)
 562             longjmp(s1->error_jmp_buf, 1);
 563     }
 564     exit(1);
 565 }
 566
 567 LIBTCCAPI void tcc_set_error_func(TCCState *s, void *error_opaque, TCCErrorFunc error_func)
 568 {
 569     s->error_opaque = error_opaque;
 570     s->error_func = error_func;
 571 }
 572
 573 LIBTCCAPI TCCErrorFunc tcc_get_error_func(TCCState *s)
 574 {
 575     return s->error_func;
 576 }
 577
 578 LIBTCCAPI void *tcc_get_error_opaque(TCCState *s)
 579 {
 580     return s->error_opaque;
 581 }
 582
 583 /* error without aborting current compilation */
 584 PUB_FUNC void _tcc_error_noabort(const char *fmt, ...)
 585 {
 586     va_list ap;
 587     va_start(ap, fmt);
 588     error1(ERROR_NOABORT, fmt, ap);
 589     va_end(ap);
 590 }
 591
 592 PUB_FUNC void _tcc_error(const char *fmt, ...)
 593 {
 594     va_list ap;
 595     va_start(ap, fmt);
 596     for (;;) error1(ERROR_ERROR, fmt, ap);
 597 }
 598
 599 PUB_FUNC void _tcc_warning(const char *fmt, ...)
 600 {
 601     va_list ap;
 602     va_start(ap, fmt);
 603     error1(ERROR_WARN, fmt, ap);
 604     va_end(ap);
 605 }
 606
 607 /********************************************************/
 608 /* I/O layer */
 609
 610 ST_FUNC void tcc_open_bf(TCCState *s1, const char *filename, int initlen)
 611 {
 612     BufferedFile *bf;
 613     int buflen = initlen ? initlen : IO_BUF_SIZE;
 614
 615     bf = tcc_mallocz(sizeof(BufferedFile) + buflen);
 616     bf->buf_ptr = bf->buffer;
 617     bf->buf_end = bf->buffer + initlen;
 618     bf->buf_end[0] = CH_EOB; /* put eob symbol */
 619     pstrcpy(bf->filename, sizeof(bf->filename), filename);
 620 #ifdef _WIN32
 621     normalize_slashes(bf->filename);
 622 #endif
 623     bf->true_filename = bf->filename;
 624     bf->line_num = 1;
 625     bf->ifdef_stack_ptr = s1->ifdef_stack_ptr;
 626     bf->fd = -1;
 627     bf->prev = file;
 628     file = bf;
 629     tok_flags = TOK_FLAG_BOL | TOK_FLAG_BOF;
 630 }
 631
 632 ST_FUNC void tcc_close(void)
 633 {
 634     BufferedFile *bf = file;
 635     if (bf->fd > 0) {
 636         close(bf->fd);
 637         total_lines += bf->line_num;
 638     }
 639     if (bf->true_filename != bf->filename)
 640         tcc_free(bf->true_filename);
 641     file = bf->prev;
 642     tcc_free(bf);
 643 }
 644
 645 static int _tcc_open(TCCState *s1, const char *filename)
 646 {
 647     int fd;
 648     if (strcmp(filename, "-") == 0)
 649         fd = 0, filename = "<stdin>";
 650     else
 651         fd = open(filename, O_RDONLY | O_BINARY);
 652     if ((s1->verbose == 2 && fd >= 0) || s1->verbose == 3)
 653         printf("%s %*s%s\n", fd < 0 ? "nf":"->",
 654                (int)(s1->include_stack_ptr - s1->include_stack), "", filename);
 655     return fd;
 656 }
 657
 658 ST_FUNC int tcc_open(TCCState *s1, const char *filename)
 659 {
 660     int fd = _tcc_open(s1, filename);
 661     if (fd < 0)
 662         return -1;
 663     tcc_open_bf(s1, filename, 0);
 664     file->fd = fd;
 665     return 0;
 666 }
 667
 668 /* compile the file opened in 'file'. Return non zero if errors. */
 669 static int tcc_compile(TCCState *s1, int filetype, const char *str, int fd)
 670 {
 671     tccelf_begin_file(s1);
 672
 673     /* Here we enter the code section where we use the global variables for
 674        parsing and code generation (tccpp.c, tccgen.c, <target>-gen.c).
 675        Other threads need to wait until we're done.
 676
 677        Alternatively we could of course pass TCCState *s1 everwhere
 678        except that it would look extremly ugly.
 679
 680        Alternatively we could use thread local storage for those global
 681        variables, which may or may not have advantages */
 682
 683     WAIT_SEM();
 684     tcc_state = s1;
 685
 686     if (setjmp(s1->error_jmp_buf) == 0) {
 687         int is_asm;
 688         s1->error_set_jmp_enabled = 1;
 689         s1->nb_errors = 0;
 690
 691         if (fd == -1) {
 692             int len = strlen(str);
 693             tcc_open_bf(s1, "<string>", len);
 694             memcpy(file->buffer, str, len);
 695         } else {
 696             tcc_open_bf(s1, str, 0);
 697             file->fd = fd;
 698         }
 699
 700         is_asm = !!(filetype & (AFF_TYPE_ASM|AFF_TYPE_ASMPP));
 701         preprocess_start(s1, is_asm);
 702         if (s1->output_type == TCC_OUTPUT_PREPROCESS) {
 703             tcc_preprocess(s1);
 704         } else if (is_asm) {
 705 #ifdef CONFIG_TCC_ASM
 706             tcc_assemble(s1, !!(filetype & AFF_TYPE_ASMPP));
 707 #else
 708             tcc_error_noabort("asm not supported");
 709 #endif
 710         } else {
 711             tccgen_compile(s1);
 712         }
 713     }
 714     s1->error_set_jmp_enabled = 0;
 715     tccgen_finish(s1, 1);
 716     preprocess_end(s1);
 717     tccgen_finish(s1, 2);
 718
 719     tcc_state = NULL;
 720     POST_SEM();
 721     tccelf_end_file(s1);
 722     return s1->nb_errors != 0 ? -1 : 0;
 723 }
 724
 725 LIBTCCAPI int tcc_compile_string(TCCState *s, const char *str)
 726 {
 727     return tcc_compile(s, s->filetype, str, -1);
 728 }
 729
 730 /* define a preprocessor symbol. A value can also be provided with the '=' operator */
 731 LIBTCCAPI void tcc_define_symbol(TCCState *s1, const char *sym, const char *value)
 732 {
 733     if (!value)
 734         value = "1";
 735     cstr_printf(&s1->cmdline_defs, "#define %s %s\n", sym, value);
 736 }
 737
 738 /* undefine a preprocessor symbol */
 739 LIBTCCAPI void tcc_undefine_symbol(TCCState *s1, const char *sym)
 740 {
 741     cstr_printf(&s1->cmdline_defs, "#undef %s\n", sym);
 742 }
 743
 744
 745 LIBTCCAPI TCCState *tcc_new(void)
 746 {
 747     TCCState *s;
 748
 749     s = tcc_mallocz(sizeof(TCCState));
 750     if (!s)
 751         return NULL;
 752     WAIT_SEM();
 753     ++nb_states;
 754     POST_SEM();
 755
 756 #undef gnu_ext
 757
 758     s->gnu_ext = 1;
 759     s->tcc_ext = 1;
 760     s->nocommon = 1;
 761     s->dollars_in_identifiers = 1; /*on by default like in gcc/clang*/
 762     s->cversion = 199901; /* default unless -std=c11 is supplied */
 763     s->warn_implicit_function_declaration = 1;
 764     s->ms_extensions = 1;
 765
 766 #ifdef CHAR_IS_UNSIGNED
 767     s->char_is_unsigned = 1;
 768 #endif
 769 #ifdef TCC_TARGET_I386
 770     s->seg_size = 32;
 771 #endif
 772     /* enable this if you want symbols with leading underscore on windows: */
 773 #if 0 /* def TCC_TARGET_PE */
 774     s->leading_underscore = 1;
 775 #endif
 776 #ifdef CONFIG_TCC_BACKTRACE
 777     s->rt_num_callers = 6;
 778 #endif
 779     s->ppfp = stdout;
 780     /* might be used in error() before preprocess_start() */
 781     s->include_stack_ptr = s->include_stack;
 782
 783     tccelf_new(s);
 784
 785 #ifdef _WIN32
 786     tcc_set_lib_path_w32(s);
 787 #else
 788     tcc_set_lib_path(s, CONFIG_TCCDIR);
 789 #endif
 790
 791     {
 792         /* define __TINYC__ 92X  */
 793         char buffer[32]; int a,b,c;
 794         sscanf(TCC_VERSION, "%d.%d.%d", &a, &b, &c);
 795         sprintf(buffer, "%d", a*10000 + b*100 + c);
 796         tcc_define_symbol(s, "__TINYC__", buffer);
 797     }
 798
 799     /* standard defines */
 800     tcc_define_symbol(s, "__STDC__", NULL);
 801     tcc_define_symbol(s, "__STDC_VERSION__", "199901L");
 802     tcc_define_symbol(s, "__STDC_HOSTED__", NULL);
 803
 804     /* target defines */
 805 #if defined(TCC_TARGET_I386)
 806     tcc_define_symbol(s, "__i386__", NULL);
 807     tcc_define_symbol(s, "__i386", NULL);
 808     tcc_define_symbol(s, "i386", NULL);
 809 #elif defined(TCC_TARGET_X86_64)
 810     tcc_define_symbol(s, "__x86_64__", NULL);
 811 #elif defined(TCC_TARGET_ARM)
 812     tcc_define_symbol(s, "__ARM_ARCH_4__", NULL);
 813     tcc_define_symbol(s, "__arm_elf__", NULL);
 814     tcc_define_symbol(s, "__arm_elf", NULL);
 815     tcc_define_symbol(s, "arm_elf", NULL);
 816     tcc_define_symbol(s, "__arm__", NULL);
 817     tcc_define_symbol(s, "__arm", NULL);
 818     tcc_define_symbol(s, "arm", NULL);
 819     tcc_define_symbol(s, "__APCS_32__", NULL);
 820     tcc_define_symbol(s, "__ARMEL__", NULL);
 821 #if defined(TCC_ARM_EABI)
 822     tcc_define_symbol(s, "__ARM_EABI__", NULL);
 823 #endif
 824 #if defined(TCC_ARM_HARDFLOAT)
 825     s->float_abi = ARM_HARD_FLOAT;
 826     tcc_define_symbol(s, "__ARM_PCS_VFP", NULL);
 827 #else
 828     s->float_abi = ARM_SOFTFP_FLOAT;
 829 #endif
 830 #elif defined(TCC_TARGET_ARM64)
 831     tcc_define_symbol(s, "__aarch64__", NULL);
 832 #elif defined TCC_TARGET_C67
 833     tcc_define_symbol(s, "__C67__", NULL);
 834 #elif defined TCC_TARGET_RISCV64
 835     tcc_define_symbol(s, "__riscv", NULL);
 836     tcc_define_symbol(s, "__riscv_xlen", "64");
 837     tcc_define_symbol(s, "__riscv_flen", "64");
 838     tcc_define_symbol(s, "__riscv_div", NULL);
 839     tcc_define_symbol(s, "__riscv_mul", NULL);
 840     tcc_define_symbol(s, "__riscv_fdiv", NULL);
 841     tcc_define_symbol(s, "__riscv_fsqrt", NULL);
 842     tcc_define_symbol(s, "__riscv_float_abi_double", NULL);
 843 #endif
 844
 845 #ifdef TCC_TARGET_PE
 846     tcc_define_symbol(s, "_WIN32", NULL);
 847 # ifdef TCC_TARGET_X86_64
 848     tcc_define_symbol(s, "_WIN64", NULL);
 849 # endif
 850 #else
 851     tcc_define_symbol(s, "__unix__", NULL);
 852     tcc_define_symbol(s, "__unix", NULL);
 853     tcc_define_symbol(s, "unix", NULL);
 854 # if defined(__linux__)
 855     tcc_define_symbol(s, "__linux__", NULL);
 856     tcc_define_symbol(s, "__linux", NULL);
 857 # endif
 858 # if defined(__FreeBSD__)
 859     tcc_define_symbol(s, "__FreeBSD__", "__FreeBSD__");
 860     /* No 'Thread Storage Local' on FreeBSD with tcc */
 861     tcc_define_symbol(s, "__NO_TLS", NULL);
 862 # endif
 863 # if defined(__FreeBSD_kernel__)
 864     tcc_define_symbol(s, "__FreeBSD_kernel__", NULL);
 865 # endif
 866 # if defined(__NetBSD__)
 867     tcc_define_symbol(s, "__NetBSD__", "__NetBSD__");
 868 # endif
 869 # if defined(__OpenBSD__)
 870     tcc_define_symbol(s, "__OpenBSD__", "__OpenBSD__");
 871 # endif
 872 #endif
 873
 874     /* TinyCC & gcc defines */
 875 #if PTR_SIZE == 4
 876     /* 32bit systems. */
 877     tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned int");
 878     tcc_define_symbol(s, "__PTRDIFF_TYPE__", "int");
 879     tcc_define_symbol(s, "__ILP32__", NULL);
 880 #elif LONG_SIZE == 4
 881     /* 64bit Windows. */
 882     tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned long long");
 883     tcc_define_symbol(s, "__PTRDIFF_TYPE__", "long long");
 884     tcc_define_symbol(s, "__LLP64__", NULL);
 885 #else
 886     /* Other 64bit systems. */
 887     tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned long");
 888     tcc_define_symbol(s, "__PTRDIFF_TYPE__", "long");
 889     tcc_define_symbol(s, "__LP64__", NULL);
 890 #endif
 891     tcc_define_symbol(s, "__SIZEOF_POINTER__", PTR_SIZE == 4 ? "4" : "8");
 892
 893 #ifdef TCC_TARGET_PE
 894     tcc_define_symbol(s, "__WCHAR_TYPE__", "unsigned short");
 895     tcc_define_symbol(s, "__WINT_TYPE__", "unsigned short");
 896 #else
 897     tcc_define_symbol(s, "__WCHAR_TYPE__", "int");
 898     /* wint_t is unsigned int by default, but (signed) int on BSDs
 899        and unsigned short on windows.  Other OSes might have still
 900        other conventions, sigh.  */
 901 # if defined(__FreeBSD__) || defined (__FreeBSD_kernel__) \
 902   || defined(__NetBSD__) || defined(__OpenBSD__)
 903     tcc_define_symbol(s, "__WINT_TYPE__", "int");
 904 #  ifdef __FreeBSD__
 905     /* define __GNUC__ to have some useful stuff from sys/cdefs.h
 906        that are unconditionally used in FreeBSDs other system headers :/ */
 907     tcc_define_symbol(s, "__GNUC__", "2");
 908     tcc_define_symbol(s, "__GNUC_MINOR__", "7");
 909     tcc_define_symbol(s, "__builtin_alloca", "alloca");
 910 #  endif
 911 # else
 912     tcc_define_symbol(s, "__WINT_TYPE__", "unsigned int");
 913     /* glibc defines */
 914     tcc_define_symbol(s, "__REDIRECT(name, proto, alias)",
 915         "name proto __asm__ (#alias)");
 916     tcc_define_symbol(s, "__REDIRECT_NTH(name, proto, alias)",
 917         "name proto __asm__ (#alias) __THROW");
 918 # endif
 919 # if defined(TCC_MUSL)
 920     tcc_define_symbol(s, "__DEFINED_va_list", "");
 921     tcc_define_symbol(s, "__DEFINED___isoc_va_list", "");
 922     tcc_define_symbol(s, "__isoc_va_list", "void *");
 923 # endif /* TCC_MUSL */
 924     /* Some GCC builtins that are simple to express as macros.  */
 925     tcc_define_symbol(s, "__builtin_extract_return_addr(x)", "x");
 926 #endif /* ndef TCC_TARGET_PE */
 927     return s;
 928 }
 929
 930 LIBTCCAPI void tcc_delete(TCCState *s1)
 931 {
 932     /* free sections */
 933     tccelf_delete(s1);
 934
 935     /* free library paths */
 936     dynarray_reset(&s1->library_paths, &s1->nb_library_paths);
 937     dynarray_reset(&s1->crt_paths, &s1->nb_crt_paths);
 938
 939     /* free include paths */
 940     dynarray_reset(&s1->include_paths, &s1->nb_include_paths);
 941     dynarray_reset(&s1->sysinclude_paths, &s1->nb_sysinclude_paths);
 942
 943     tcc_free(s1->tcc_lib_path);
 944     tcc_free(s1->soname);
 945     tcc_free(s1->rpath);
 946     tcc_free(s1->init_symbol);
 947     tcc_free(s1->fini_symbol);
 948     tcc_free(s1->outfile);
 949     tcc_free(s1->deps_outfile);
 950     dynarray_reset(&s1->files, &s1->nb_files);
 951     dynarray_reset(&s1->target_deps, &s1->nb_target_deps);
 952     dynarray_reset(&s1->pragma_libs, &s1->nb_pragma_libs);
 953     dynarray_reset(&s1->argv, &s1->argc);
 954
 955     cstr_free(&s1->cmdline_defs);
 956     cstr_free(&s1->cmdline_incl);
 957 #ifdef TCC_IS_NATIVE
 958     /* free runtime memory */
 959     tcc_run_free(s1);
 960 #endif
 961
 962     tcc_free(s1);
 963     WAIT_SEM();
 964     if (0 == --nb_states)
 965         tcc_memcheck();
 966     POST_SEM();
 967 }
 968
 969 LIBTCCAPI int tcc_set_output_type(TCCState *s, int output_type)
 970 {
 971     s->output_type = output_type;
 972
 973     /* always elf for objects */
 974     if (output_type == TCC_OUTPUT_OBJ)
 975         s->output_format = TCC_OUTPUT_FORMAT_ELF;
 976
 977     if (s->char_is_unsigned)
 978         tcc_define_symbol(s, "__CHAR_UNSIGNED__", NULL);
 979
 980     if (!s->nostdinc) {
 981         /* default include paths */
 982         /* -isystem paths have already been handled */
 983         tcc_add_sysinclude_path(s, CONFIG_TCC_SYSINCLUDEPATHS);
 984     }
 985
 986 #ifdef CONFIG_TCC_BCHECK
 987     if (s->do_bounds_check) {
 988         /* if bound checking, then add corresponding sections */
 989         tccelf_bounds_new(s);
 990         /* define symbol */
 991         tcc_define_symbol(s, "__BOUNDS_CHECKING_ON", NULL);
 992     }
 993 #endif
 994     if (s->do_debug) {
 995         /* add debug sections */
 996         tccelf_stab_new(s);
 997     }
 998
 999     tcc_add_library_path(s, CONFIG_TCC_LIBPATHS);
1000
1001 #ifdef TCC_TARGET_PE
1002 # ifdef _WIN32
1003     if (!s->nostdlib && output_type != TCC_OUTPUT_OBJ)
1004         tcc_add_systemdir(s);
1005 # endif
1006 #else
1007     /* paths for crt objects */
1008     tcc_split_path(s, &s->crt_paths, &s->nb_crt_paths, CONFIG_TCC_CRTPREFIX);
1009     /* add libc crt1/crti objects */
1010     if ((output_type == TCC_OUTPUT_EXE || output_type == TCC_OUTPUT_DLL) &&
1011         !s->nostdlib) {
1012         if (output_type != TCC_OUTPUT_DLL)
1013             tcc_add_crt(s, "crt1.o");
1014         tcc_add_crt(s, "crti.o");
1015     }
1016 #endif
1017     return 0;
1018 }
1019
1020 LIBTCCAPI int tcc_add_include_path(TCCState *s, const char *pathname)
1021 {
1022     tcc_split_path(s, &s->include_paths, &s->nb_include_paths, pathname);
1023     return 0;
1024 }
1025
1026 LIBTCCAPI int tcc_add_sysinclude_path(TCCState *s, const char *pathname)
1027 {
1028     tcc_split_path(s, &s->sysinclude_paths, &s->nb_sysinclude_paths, pathname);
1029     return 0;
1030 }
1031
1032 ST_FUNC int tcc_add_file_internal(TCCState *s1, const char *filename, int flags)
1033 {
1034     int fd, ret;
1035
1036     /* open the file */
1037     fd = _tcc_open(s1, filename);
1038     if (fd < 0) {
1039         if (flags & AFF_PRINT_ERROR)
1040             tcc_error_noabort("file '%s' not found", filename);
1041         return -1;
1042     }
1043
1044     /* update target deps */
1045     dynarray_add(&s1->target_deps, &s1->nb_target_deps,
1046             tcc_strdup(filename));
1047
1048     if (flags & AFF_TYPE_BIN) {
1049         ElfW(Ehdr) ehdr;
1050         int obj_type;
1051
1052         obj_type = tcc_object_type(fd, &ehdr);
1053         lseek(fd, 0, SEEK_SET);
1054
1055 #ifdef TCC_TARGET_MACHO
1056         if (0 == obj_type && 0 == strcmp(tcc_fileextension(filename), ".dylib"))
1057             obj_type = AFF_BINTYPE_DYN;
1058 #endif
1059
1060         switch (obj_type) {
1061         case AFF_BINTYPE_REL:
1062             ret = tcc_load_object_file(s1, fd, 0);
1063             break;
1064 #ifndef TCC_TARGET_PE
1065         case AFF_BINTYPE_DYN:
1066             if (s1->output_type == TCC_OUTPUT_MEMORY) {
1067                 ret = 0;
1068 #ifdef TCC_IS_NATIVE
1069                 if (NULL == dlopen(filename, RTLD_GLOBAL | RTLD_LAZY))
1070                     ret = -1;
1071 #endif
1072             } else {
1073                 ret = tcc_load_dll(s1, fd, filename,
1074                                    (flags & AFF_REFERENCED_DLL) != 0);
1075             }
1076             break;
1077 #endif
1078         case AFF_BINTYPE_AR:
1079             ret = tcc_load_archive(s1, fd, !(flags & AFF_WHOLE_ARCHIVE));
1080             break;
1081 #ifdef TCC_TARGET_COFF
1082         case AFF_BINTYPE_C67:
1083             ret = tcc_load_coff(s1, fd);
1084             break;
1085 #endif
1086         default:
1087 #ifdef TCC_TARGET_PE
1088             ret = pe_load_file(s1, filename, fd);
1089 #else
1090             /* as GNU ld, consider it is an ld script if not recognized */
1091             ret = tcc_load_ldscript(s1, fd);
1092 #endif
1093             if (ret < 0)
1094                 tcc_error_noabort("unrecognized file type");
1095             break;
1096         }
1097         close(fd);
1098     } else {
1099         ret = tcc_compile(s1, flags, filename, fd);
1100     }
1101     return ret;
1102 }
1103
1104 LIBTCCAPI int tcc_add_file(TCCState *s, const char *filename)
1105 {
1106     int filetype = s->filetype;
1107     if (0 == (filetype & AFF_TYPE_MASK)) {
1108         /* use a file extension to detect a filetype */
1109         const char *ext = tcc_fileextension(filename);
1110         if (ext[0]) {
1111             ext++;
1112             if (!strcmp(ext, "S"))
1113                 filetype = AFF_TYPE_ASMPP;
1114             else if (!strcmp(ext, "s"))
1115                 filetype = AFF_TYPE_ASM;
1116             else if (!PATHCMP(ext, "c") || !PATHCMP(ext, "i"))
1117                 filetype = AFF_TYPE_C;
1118             else
1119                 filetype |= AFF_TYPE_BIN;
1120         } else {
1121             filetype = AFF_TYPE_C;
1122         }
1123     }
1124     return tcc_add_file_internal(s, filename, filetype | AFF_PRINT_ERROR);
1125 }
1126
1127 LIBTCCAPI int tcc_add_library_path(TCCState *s, const char *pathname)
1128 {
1129     tcc_split_path(s, &s->library_paths, &s->nb_library_paths, pathname);
1130     return 0;
1131 }
1132
1133 static int tcc_add_library_internal(TCCState *s, const char *fmt,
1134     const char *filename, int flags, char **paths, int nb_paths)
1135 {
1136     char buf[1024];
1137     int i;
1138
1139     for(i = 0; i < nb_paths; i++) {
1140         snprintf(buf, sizeof(buf), fmt, paths[i], filename);
1141         if (tcc_add_file_internal(s, buf, flags | AFF_TYPE_BIN) == 0)
1142             return 0;
1143     }
1144     return -1;
1145 }
1146
1147 /* find and load a dll. Return non zero if not found */
1148 /* XXX: add '-rpath' option support ? */
1149 ST_FUNC int tcc_add_dll(TCCState *s, const char *filename, int flags)
1150 {
1151     return tcc_add_library_internal(s, "%s/%s", filename, flags,
1152         s->library_paths, s->nb_library_paths);
1153 }
1154
1155 #ifndef TCC_TARGET_PE
1156 ST_FUNC int tcc_add_crt(TCCState *s1, const char *filename)
1157 {
1158     if (-1 == tcc_add_library_internal(s1, "%s/%s",
1159         filename, 0, s1->crt_paths, s1->nb_crt_paths))
1160         tcc_error_noabort("file '%s' not found", filename);
1161     return 0;
1162 }
1163 #endif
1164
1165 /* the library name is the same as the argument of the '-l' option */
1166 LIBTCCAPI int tcc_add_library(TCCState *s, const char *libraryname)
1167 {
1168 #if defined TCC_TARGET_PE
1169     const char *libs[] = { "%s/%s.def", "%s/lib%s.def", "%s/%s.dll", "%s/lib%s.dll", "%s/lib%s.a", NULL };
1170     const char **pp = s->static_link ? libs + 4 : libs;
1171 #elif defined TCC_TARGET_MACHO
1172     const char *libs[] = { "%s/lib%s.dylib", "%s/lib%s.a", NULL };
1173     const char **pp = s->static_link ? libs + 1 : libs;
1174 #else
1175     const char *libs[] = { "%s/lib%s.so", "%s/lib%s.a", NULL };
1176     const char **pp = s->static_link ? libs + 1 : libs;
1177 #endif
1178     int flags = s->filetype & AFF_WHOLE_ARCHIVE;
1179     while (*pp) {
1180         if (0 == tcc_add_library_internal(s, *pp,
1181             libraryname, flags, s->library_paths, s->nb_library_paths))
1182             return 0;
1183         ++pp;
1184     }
1185     return -1;
1186 }
1187
1188 PUB_FUNC int tcc_add_library_err(TCCState *s1, const char *libname)
1189 {
1190     int ret = tcc_add_library(s1, libname);
1191     if (ret < 0)
1192         tcc_error_noabort("library '%s' not found", libname);
1193     return ret;
1194 }
1195
1196 /* handle #pragma comment(lib,) */
1197 ST_FUNC void tcc_add_pragma_libs(TCCState *s1)
1198 {
1199     int i;
1200     for (i = 0; i < s1->nb_pragma_libs; i++)
1201         tcc_add_library_err(s1, s1->pragma_libs[i]);
1202 }
1203
1204 LIBTCCAPI int tcc_add_symbol(TCCState *s1, const char *name, const void *val)
1205 {
1206 #ifdef TCC_TARGET_PE
1207     /* On x86_64 'val' might not be reachable with a 32bit offset.
1208        So it is handled here as if it were in a DLL. */
1209     pe_putimport(s1, 0, name, (uintptr_t)val);
1210 #else
1211     set_elf_sym(symtab_section, (uintptr_t)val, 0,
1212         ELFW(ST_INFO)(STB_GLOBAL, STT_NOTYPE), 0,
1213         SHN_ABS, name);
1214 #endif
1215     return 0;
1216 }
1217
1218 LIBTCCAPI void tcc_set_lib_path(TCCState *s, const char *path)
1219 {
1220     tcc_free(s->tcc_lib_path);
1221     s->tcc_lib_path = tcc_strdup(path);
1222 }
1223
1224 #define WD_ALL    0x0001 /* warning is activated when using -Wall */
1225 #define FD_INVERT 0x0002 /* invert value before storing */
1226
1227 typedef struct FlagDef {
1228     uint16_t offset;
1229     uint16_t flags;
1230     const char *name;
1231 } FlagDef;
1232
1233 static int no_flag(const char **pp)
1234 {
1235     const char *p = *pp;
1236     if (*p != 'n' || *++p != 'o' || *++p != '-')
1237         return 0;
1238     *pp = p + 1;
1239     return 1;
1240 }
1241
1242 ST_FUNC int set_flag(TCCState *s, const FlagDef *flags, const char *name)
1243 {
1244     int value, ret;
1245     const FlagDef *p;
1246     const char *r;
1247
1248     value = 1;
1249     r = name;
1250     if (no_flag(&r))
1251         value = 0;
1252
1253     for (ret = -1, p = flags; p->name; ++p) {
1254         if (ret) {
1255             if (strcmp(r, p->name))
1256                 continue;
1257         } else {
1258             if (0 == (p->flags & WD_ALL))
1259                 continue;
1260         }
1261         if (p->offset) {
1262             *((unsigned char *)s + p->offset) =
1263                 p->flags & FD_INVERT ? !value : value;
1264             if (ret)
1265                 return 0;
1266         } else {
1267             ret = 0;
1268         }
1269     }
1270     return ret;
1271 }
1272
1273 static int strstart(const char *val, const char **str)
1274 {
1275     const char *p, *q;
1276     p = *str;
1277     q = val;
1278     while (*q) {
1279         if (*p != *q)
1280             return 0;
1281         p++;
1282         q++;
1283     }
1284     *str = p;
1285     return 1;
1286 }
1287
1288 /* Like strstart, but automatically takes into account that ld options can
1289  *
1290  * - start with double or single dash (e.g. '--soname' or '-soname')
1291  * - arguments can be given as separate or after '=' (e.g. '-Wl,-soname,x.so'
1292  *   or '-Wl,-soname=x.so')
1293  *
1294  * you provide `val` always in 'option[=]' form (no leading -)
1295  */
1296 static int link_option(const char *str, const char *val, const char **ptr)
1297 {
1298     const char *p, *q;
1299     int ret;
1300
1301     /* there should be 1 or 2 dashes */
1302     if (*str++ != '-')
1303         return 0;
1304     if (*str == '-')
1305         str++;
1306
1307     /* then str & val should match (potentially up to '=') */
1308     p = str;
1309     q = val;
1310
1311     ret = 1;
1312     if (q[0] == '?') {
1313         ++q;
1314         if (no_flag(&p))
1315             ret = -1;
1316     }
1317
1318     while (*q != '\0' && *q != '=') {
1319         if (*p != *q)
1320             return 0;
1321         p++;
1322         q++;
1323     }
1324
1325     /* '=' near eos means ',' or '=' is ok */
1326     if (*q == '=') {
1327         if (*p == 0)
1328             *ptr = p;
1329         if (*p != ',' && *p != '=')
1330             return 0;
1331         p++;
1332     } else if (*p) {
1333         return 0;
1334     }
1335     *ptr = p;
1336     return ret;
1337 }
1338
1339 static const char *skip_linker_arg(const char **str)
1340 {
1341     const char *s1 = *str;
1342     const char *s2 = strchr(s1, ',');
1343     *str = s2 ? s2++ : (s2 = s1 + strlen(s1));
1344     return s2;
1345 }
1346
1347 static void copy_linker_arg(char **pp, const char *s, int sep)
1348 {
1349     const char *q = s;
1350     char *p = *pp;
1351     int l = 0;
1352     if (p && sep)
1353         p[l = strlen(p)] = sep, ++l;
1354     skip_linker_arg(&q);
1355     pstrncpy(l + (*pp = tcc_realloc(p, q - s + l + 1)), s, q - s);
1356 }
1357
1358 /* set linker options */
1359 static int tcc_set_linker(TCCState *s, const char *option)
1360 {
1361     TCCState *s1 = s;
1362     while (*option) {
1363
1364         const char *p = NULL;
1365         char *end = NULL;
1366         int ignoring = 0;
1367         int ret;
1368
1369         if (link_option(option, "Bsymbolic", &p)) {
1370             s->symbolic = 1;
1371         } else if (link_option(option, "nostdlib", &p)) {
1372             s->nostdlib = 1;
1373         } else if (link_option(option, "fini=", &p)) {
1374             copy_linker_arg(&s->fini_symbol, p, 0);
1375             ignoring = 1;
1376         } else if (link_option(option, "image-base=", &p)
1377                 || link_option(option, "Ttext=", &p)) {
1378             s->text_addr = strtoull(p, &end, 16);
1379             s->has_text_addr = 1;
1380         } else if (link_option(option, "init=", &p)) {
1381             copy_linker_arg(&s->init_symbol, p, 0);
1382             ignoring = 1;
1383         } else if (link_option(option, "oformat=", &p)) {
1384 #if defined(TCC_TARGET_PE)
1385             if (strstart("pe-", &p)) {
1386 #elif PTR_SIZE == 8
1387             if (strstart("elf64-", &p)) {
1388 #else
1389             if (strstart("elf32-", &p)) {
1390 #endif
1391                 s->output_format = TCC_OUTPUT_FORMAT_ELF;
1392             } else if (!strcmp(p, "binary")) {
1393                 s->output_format = TCC_OUTPUT_FORMAT_BINARY;
1394 #ifdef TCC_TARGET_COFF
1395             } else if (!strcmp(p, "coff")) {
1396                 s->output_format = TCC_OUTPUT_FORMAT_COFF;
1397 #endif
1398             } else
1399                 goto err;
1400
1401         } else if (link_option(option, "as-needed", &p)) {
1402             ignoring = 1;
1403         } else if (link_option(option, "O", &p)) {
1404             ignoring = 1;
1405         } else if (link_option(option, "export-all-symbols", &p)) {
1406             s->rdynamic = 1;
1407         } else if (link_option(option, "export-dynamic", &p)) {
1408             s->rdynamic = 1;
1409         } else if (link_option(option, "rpath=", &p)) {
1410             copy_linker_arg(&s->rpath, p, ':');
1411         } else if (link_option(option, "enable-new-dtags", &p)) {
1412             s->enable_new_dtags = 1;
1413         } else if (link_option(option, "section-alignment=", &p)) {
1414             s->section_align = strtoul(p, &end, 16);
1415         } else if (link_option(option, "soname=", &p)) {
1416             copy_linker_arg(&s->soname, p, 0);
1417 #ifdef TCC_TARGET_PE
1418         } else if (link_option(option, "large-address-aware", &p)) {
1419             s->pe_characteristics |= 0x20;
1420         } else if (link_option(option, "file-alignment=", &p)) {
1421             s->pe_file_align = strtoul(p, &end, 16);
1422         } else if (link_option(option, "stack=", &p)) {
1423             s->pe_stack_size = strtoul(p, &end, 10);
1424         } else if (link_option(option, "subsystem=", &p)) {
1425 #if defined(TCC_TARGET_I386) || defined(TCC_TARGET_X86_64)
1426             if (!strcmp(p, "native")) {
1427                 s->pe_subsystem = 1;
1428             } else if (!strcmp(p, "console")) {
1429                 s->pe_subsystem = 3;
1430             } else if (!strcmp(p, "gui") || !strcmp(p, "windows")) {
1431                 s->pe_subsystem = 2;
1432             } else if (!strcmp(p, "posix")) {
1433                 s->pe_subsystem = 7;
1434             } else if (!strcmp(p, "efiapp")) {
1435                 s->pe_subsystem = 10;
1436             } else if (!strcmp(p, "efiboot")) {
1437                 s->pe_subsystem = 11;
1438             } else if (!strcmp(p, "efiruntime")) {
1439                 s->pe_subsystem = 12;
1440             } else if (!strcmp(p, "efirom")) {
1441                 s->pe_subsystem = 13;
1442 #elif defined(TCC_TARGET_ARM)
1443             if (!strcmp(p, "wince")) {
1444                 s->pe_subsystem = 9;
1445 #endif
1446             } else
1447                 goto err;
1448 #endif
1449         } else if (ret = link_option(option, "?whole-archive", &p), ret) {
1450             if (ret > 0)
1451                 s->filetype |= AFF_WHOLE_ARCHIVE;
1452             else
1453                 s->filetype &= ~AFF_WHOLE_ARCHIVE;
1454         } else if (p) {
1455             return 0;
1456         } else {
1457     err:
1458             tcc_error("unsupported linker option '%s'", option);
1459         }
1460
1461         if (ignoring && s->warn_unsupported)
1462             tcc_warning("unsupported linker option '%s'", option);
1463
1464         option = skip_linker_arg(&p);
1465     }
1466     return 1;
1467 }
1468
1469 typedef struct TCCOption {
1470     const char *name;
1471     uint16_t index;
1472     uint16_t flags;
1473 } TCCOption;
1474
1475 enum {
1476     TCC_OPTION_HELP,
1477     TCC_OPTION_HELP2,
1478     TCC_OPTION_v,
1479     TCC_OPTION_I,
1480     TCC_OPTION_D,
1481     TCC_OPTION_U,
1482     TCC_OPTION_P,
1483     TCC_OPTION_L,
1484     TCC_OPTION_B,
1485     TCC_OPTION_l,
1486     TCC_OPTION_bench,
1487     TCC_OPTION_bt,
1488     TCC_OPTION_b,
1489     TCC_OPTION_ba,
1490     TCC_OPTION_g,
1491     TCC_OPTION_c,
1492     TCC_OPTION_dumpversion,
1493     TCC_OPTION_d,
1494     TCC_OPTION_static,
1495     TCC_OPTION_std,
1496     TCC_OPTION_shared,
1497     TCC_OPTION_soname,
1498     TCC_OPTION_o,
1499     TCC_OPTION_r,
1500     TCC_OPTION_s,
1501     TCC_OPTION_traditional,
1502     TCC_OPTION_Wl,
1503     TCC_OPTION_Wp,
1504     TCC_OPTION_W,
1505     TCC_OPTION_O,
1506     TCC_OPTION_mfloat_abi,
1507     TCC_OPTION_m,
1508     TCC_OPTION_f,
1509     TCC_OPTION_isystem,
1510     TCC_OPTION_iwithprefix,
1511     TCC_OPTION_include,
1512     TCC_OPTION_nostdinc,
1513     TCC_OPTION_nostdlib,
1514     TCC_OPTION_print_search_dirs,
1515     TCC_OPTION_rdynamic,
1516     TCC_OPTION_param,
1517     TCC_OPTION_pedantic,
1518     TCC_OPTION_pthread,
1519     TCC_OPTION_run,
1520     TCC_OPTION_w,
1521     TCC_OPTION_pipe,
1522     TCC_OPTION_E,
1523     TCC_OPTION_MD,
1524     TCC_OPTION_MF,
1525     TCC_OPTION_x,
1526     TCC_OPTION_ar,
1527     TCC_OPTION_impdef
1528 };
1529
1530 #define TCC_OPTION_HAS_ARG 0x0001
1531 #define TCC_OPTION_NOSEP   0x0002 /* cannot have space before option and arg */
1532
1533 static const TCCOption tcc_options[] = {
1534     { "h", TCC_OPTION_HELP, 0 },
1535     { "-help", TCC_OPTION_HELP, 0 },
1536     { "?", TCC_OPTION_HELP, 0 },
1537     { "hh", TCC_OPTION_HELP2, 0 },
1538     { "v", TCC_OPTION_v, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1539     { "I", TCC_OPTION_I, TCC_OPTION_HAS_ARG },
1540     { "D", TCC_OPTION_D, TCC_OPTION_HAS_ARG },
1541     { "U", TCC_OPTION_U, TCC_OPTION_HAS_ARG },
1542     { "P", TCC_OPTION_P, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1543     { "L", TCC_OPTION_L, TCC_OPTION_HAS_ARG },
1544     { "B", TCC_OPTION_B, TCC_OPTION_HAS_ARG },
1545     { "l", TCC_OPTION_l, TCC_OPTION_HAS_ARG },
1546     { "bench", TCC_OPTION_bench, 0 },
1547 #ifdef CONFIG_TCC_BACKTRACE
1548     { "bt", TCC_OPTION_bt, TCC_OPTION_HAS_ARG },
1549 #endif
1550 #ifdef CONFIG_TCC_BCHECK
1551     { "b", TCC_OPTION_b, 0 },
1552 #endif
1553     { "g", TCC_OPTION_g, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1554     { "c", TCC_OPTION_c, 0 },
1555     { "dumpversion", TCC_OPTION_dumpversion, 0},
1556     { "d", TCC_OPTION_d, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1557     { "static", TCC_OPTION_static, 0 },
1558     { "std", TCC_OPTION_std, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1559     { "shared", TCC_OPTION_shared, 0 },
1560     { "soname", TCC_OPTION_soname, TCC_OPTION_HAS_ARG },
1561     { "o", TCC_OPTION_o, TCC_OPTION_HAS_ARG },
1562     { "-param", TCC_OPTION_param, TCC_OPTION_HAS_ARG },
1563     { "pedantic", TCC_OPTION_pedantic, 0},
1564     { "pthread", TCC_OPTION_pthread, 0},
1565     { "run", TCC_OPTION_run, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1566     { "rdynamic", TCC_OPTION_rdynamic, 0 },
1567     { "r", TCC_OPTION_r, 0 },
1568     { "s", TCC_OPTION_s, 0 },
1569     { "traditional", TCC_OPTION_traditional, 0 },
1570     { "Wl,", TCC_OPTION_Wl, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1571     { "Wp,", TCC_OPTION_Wp, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1572     { "W", TCC_OPTION_W, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1573     { "O", TCC_OPTION_O, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1574 #ifdef TCC_TARGET_ARM
1575     { "mfloat-abi", TCC_OPTION_mfloat_abi, TCC_OPTION_HAS_ARG },
1576 #endif
1577     { "m", TCC_OPTION_m, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1578     { "f", TCC_OPTION_f, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1579     { "isystem", TCC_OPTION_isystem, TCC_OPTION_HAS_ARG },
1580     { "include", TCC_OPTION_include, TCC_OPTION_HAS_ARG },
1581     { "nostdinc", TCC_OPTION_nostdinc, 0 },
1582     { "nostdlib", TCC_OPTION_nostdlib, 0 },
1583     { "print-search-dirs", TCC_OPTION_print_search_dirs, 0 },
1584     { "w", TCC_OPTION_w, 0 },
1585     { "pipe", TCC_OPTION_pipe, 0},
1586     { "E", TCC_OPTION_E, 0},
1587     { "MD", TCC_OPTION_MD, 0},
1588     { "MF", TCC_OPTION_MF, TCC_OPTION_HAS_ARG },
1589     { "x", TCC_OPTION_x, TCC_OPTION_HAS_ARG },
1590     { "ar", TCC_OPTION_ar, 0},
1591 #ifdef TCC_TARGET_PE
1592     { "impdef", TCC_OPTION_impdef, 0},
1593 #endif
1594     { NULL, 0, 0 },
1595 };
1596
1597 static const FlagDef options_W[] = {
1598     { 0, 0, "all" },
1599     { offsetof(TCCState, warn_unsupported), 0, "unsupported" },
1600     { offsetof(TCCState, warn_write_strings), 0, "write-strings" },
1601     { offsetof(TCCState, warn_error), 0, "error" },
1602     { offsetof(TCCState, warn_gcc_compat), 0, "gcc-compat" },
1603     { offsetof(TCCState, warn_implicit_function_declaration), WD_ALL,
1604       "implicit-function-declaration" },
1605     { 0, 0, NULL }
1606 };
1607
1608 static const FlagDef options_f[] = {
1609     { offsetof(TCCState, char_is_unsigned), 0, "unsigned-char" },
1610     { offsetof(TCCState, char_is_unsigned), FD_INVERT, "signed-char" },
1611     { offsetof(TCCState, nocommon), FD_INVERT, "common" },
1612     { offsetof(TCCState, leading_underscore), 0, "leading-underscore" },
1613     { offsetof(TCCState, ms_extensions), 0, "ms-extensions" },
1614     { offsetof(TCCState, dollars_in_identifiers), 0, "dollars-in-identifiers" },
1615     { 0, 0, NULL }
1616 };
1617
1618 static const FlagDef options_m[] = {
1619     { offsetof(TCCState, ms_bitfields), 0, "ms-bitfields" },
1620 #ifdef TCC_TARGET_X86_64
1621     { offsetof(TCCState, nosse), FD_INVERT, "sse" },
1622 #endif
1623     { 0, 0, NULL }
1624 };
1625
1626 static void parse_option_D(TCCState *s1, const char *optarg)
1627 {
1628     char *sym = tcc_strdup(optarg);
1629     char *value = strchr(sym, '=');
1630     if (value)
1631         *value++ = '\0';
1632     tcc_define_symbol(s1, sym, value);
1633     tcc_free(sym);
1634 }
1635
1636 static void args_parser_add_file(TCCState *s, const char* filename, int filetype)
1637 {
1638     struct filespec *f = tcc_malloc(sizeof *f + strlen(filename));
1639     f->type = filetype;
1640     strcpy(f->name, filename);
1641     dynarray_add(&s->files, &s->nb_files, f);
1642 }
1643
1644 static int args_parser_make_argv(const char *r, int *argc, char ***argv)
1645 {
1646     int ret = 0, q, c;
1647     CString str;
1648     for(;;) {
1649         while (c = (unsigned char)*r, c && c <= ' ')
1650           ++r;
1651         if (c == 0)
1652             break;
1653         q = 0;
1654         cstr_new(&str);
1655         while (c = (unsigned char)*r, c) {
1656             ++r;
1657             if (c == '\\' && (*r == '"' || *r == '\\')) {
1658                 c = *r++;
1659             } else if (c == '"') {
1660                 q = !q;
1661                 continue;
1662             } else if (q == 0 && c <= ' ') {
1663                 break;
1664             }
1665             cstr_ccat(&str, c);
1666         }
1667         cstr_ccat(&str, 0);
1668         //printf("<%s>\n", str.data), fflush(stdout);
1669         dynarray_add(argv, argc, tcc_strdup(str.data));
1670         cstr_free(&str);
1671         ++ret;
1672     }
1673     return ret;
1674 }
1675
1676 /* read list file */
1677 static void args_parser_listfile(TCCState *s,
1678     const char *filename, int optind, int *pargc, char ***pargv)
1679 {
1680     TCCState *s1 = s;
1681     int fd, i;
1682     size_t len;
1683     char *p;
1684     int argc = 0;
1685     char **argv = NULL;
1686
1687     fd = open(filename, O_RDONLY | O_BINARY);
1688     if (fd < 0)
1689         tcc_error("listfile '%s' not found", filename);
1690
1691     len = lseek(fd, 0, SEEK_END);
1692     p = tcc_malloc(len + 1), p[len] = 0;
1693     lseek(fd, 0, SEEK_SET), read(fd, p, len), close(fd);
1694
1695     for (i = 0; i < *pargc; ++i)
1696         if (i == optind)
1697             args_parser_make_argv(p, &argc, &argv);
1698         else
1699             dynarray_add(&argv, &argc, tcc_strdup((*pargv)[i]));
1700
1701     tcc_free(p);
1702     dynarray_reset(&s->argv, &s->argc);
1703     *pargc = s->argc = argc, *pargv = s->argv = argv;
1704 }
1705
1706 PUB_FUNC int tcc_parse_args(TCCState *s, int *pargc, char ***pargv, int optind)
1707 {
1708     TCCState *s1 = s;
1709     const TCCOption *popt;
1710     const char *optarg, *r;
1711     const char *run = NULL;
1712     int last_o = -1;
1713     int x;
1714     CString linker_arg; /* collect -Wl options */
1715     int tool = 0, arg_start = 0, noaction = optind;
1716     char **argv = *pargv;
1717     int argc = *pargc;
1718
1719     cstr_new(&linker_arg);
1720
1721     while (optind < argc) {
1722         r = argv[optind];
1723         if (r[0] == '@' && r[1] != '\0') {
1724             args_parser_listfile(s, r + 1, optind, &argc, &argv);
1725             continue;
1726         }
1727         optind++;
1728         if (tool) {
1729             if (r[0] == '-' && r[1] == 'v' && r[2] == 0)
1730                 ++s->verbose;
1731             continue;
1732         }
1733 reparse:
1734         if (r[0] != '-' || r[1] == '\0') {
1735             if (r[0] != '@') /* allow "tcc file(s) -run @ args ..." */
1736                 args_parser_add_file(s, r, s->filetype);
1737             if (run) {
1738                 tcc_set_options(s, run);
1739                 arg_start = optind - 1;
1740                 break;
1741             }
1742             continue;
1743         }
1744
1745         /* find option in table */
1746         for(popt = tcc_options; ; ++popt) {
1747             const char *p1 = popt->name;
1748             const char *r1 = r + 1;
1749             if (p1 == NULL)
1750                 tcc_error("invalid option -- '%s'", r);
1751             if (!strstart(p1, &r1))
1752                 continue;
1753             optarg = r1;
1754             if (popt->flags & TCC_OPTION_HAS_ARG) {
1755                 if (*r1 == '\0' && !(popt->flags & TCC_OPTION_NOSEP)) {
1756                     if (optind >= argc)
1757                 arg_err:
1758                         tcc_error("argument to '%s' is missing", r);
1759                     optarg = argv[optind++];
1760                 }
1761             } else if (*r1 != '\0')
1762                 continue;
1763             break;
1764         }
1765
1766         switch(popt->index) {
1767         case TCC_OPTION_HELP:
1768             return OPT_HELP;
1769         case TCC_OPTION_HELP2:
1770             return OPT_HELP2;
1771         case TCC_OPTION_I:
1772             tcc_add_include_path(s, optarg);
1773             break;
1774         case TCC_OPTION_D:
1775             parse_option_D(s, optarg);
1776             break;
1777         case TCC_OPTION_U:
1778             tcc_undefine_symbol(s, optarg);
1779             break;
1780         case TCC_OPTION_L:
1781             tcc_add_library_path(s, optarg);
1782             break;
1783         case TCC_OPTION_B:
1784             /* set tcc utilities path (mainly for tcc development) */
1785             tcc_set_lib_path(s, optarg);
1786             break;
1787         case TCC_OPTION_l:
1788             args_parser_add_file(s, optarg, AFF_TYPE_LIB | (s->filetype & ~AFF_TYPE_MASK));
1789             s->nb_libraries++;
1790             break;
1791         case TCC_OPTION_pthread:
1792             parse_option_D(s, "_REENTRANT");
1793             s->option_pthread = 1;
1794             break;
1795         case TCC_OPTION_bench:
1796             s->do_bench = 1;
1797             break;
1798 #ifdef CONFIG_TCC_BACKTRACE
1799         case TCC_OPTION_bt:
1800             s->rt_num_callers = atoi(optarg);
1801             break;
1802 #endif
1803 #ifdef CONFIG_TCC_BCHECK
1804         case TCC_OPTION_b:
1805             s->do_bounds_check = 1;
1806             s->do_debug = 1;
1807             break;
1808 #endif
1809         case TCC_OPTION_g:
1810             s->do_debug = 1;
1811             break;
1812         case TCC_OPTION_c:
1813             x = TCC_OUTPUT_OBJ;
1814         set_output_type:
1815             if (s->output_type)
1816                 tcc_warning("-%s: overriding compiler action already specified", popt->name);
1817             s->output_type = x;
1818             break;
1819         case TCC_OPTION_d:
1820             if (*optarg == 'D')
1821                 s->dflag = 3;
1822             else if (*optarg == 'M')
1823                 s->dflag = 7;
1824             else if (*optarg == 't')
1825                 s->dflag = 16;
1826             else if (isnum(*optarg))
1827                 g_debug = atoi(optarg);
1828             else
1829                 goto unsupported_option;
1830             break;
1831         case TCC_OPTION_static:
1832             s->static_link = 1;
1833             break;
1834         case TCC_OPTION_std:
1835             if (*optarg == '=') {
1836                 if (strcmp(optarg, "=c11") == 0) {
1837                     tcc_undefine_symbol(s, "__STDC_VERSION__");
1838                     tcc_define_symbol(s, "__STDC_VERSION__", "201112L");
1839                     /*
1840                      * The integer constant 1, intended to indicate
1841                      * that the implementation does not support atomic
1842                      * types (including the _Atomic type qualiﬁer) and
1843                      * the <stdatomic.h> header.
1844                      */
1845                     tcc_define_symbol(s, "__STDC_NO_ATOMICS__", "1");
1846                     /*
1847                      * The integer constant 1, intended to indicate
1848                      * that the implementation does not support complex
1849                      * types or the <complex.h> header.
1850                      */
1851                     tcc_define_symbol(s, "__STDC_NO_COMPLEX__", "1");
1852                     /*
1853                      * The integer constant 1, intended to indicate
1854                      * that the implementation does not support the
1855                      * <threads.h> header.
1856                      */
1857                     tcc_define_symbol(s, "__STDC_NO_THREADS__", "1");
1858                     /*
1859                      * __STDC_NO_VLA__, tcc supports VLA.
1860                      * The integer constant 1, intended to indicate
1861                      * that the implementation does not support
1862                      * variable length arrays or variably modiﬁed
1863                      * types.
1864                      */
1865 #if !defined(TCC_TARGET_PE)
1866                     /*
1867                      * An integer constant of the form yyyymmL (for
1868                      * example, 199712L). If this symbol is deﬁned,
1869                      * then every character in the Unicode required
1870                      * set, when stored in an object of type
1871                      * wchar_t, has the same value as the short
1872                      * identiﬁer of that character.
1873                      */
1874                     #if 0
1875                     /* on Linux, this conflicts with a define introduced by
1876                      * /usr/include/stdc-predef.h included by glibc libs;
1877                      * clang doesn't define it at all so it's probably not necessary
1878                      */
1879                     tcc_define_symbol(s, "__STDC_ISO_10646__", "201605L");
1880                     #endif
1881                     /*
1882                      * The integer constant 1, intended to indicate
1883                      * that values of type char16_t are UTF−16
1884                      * encoded. If some other encoding is used, the
1885                      * macro shall not be deﬁned and the actual
1886                      * encoding used is implementation deﬁned.
1887                      */
1888                     tcc_define_symbol(s, "__STDC_UTF_16__", "1");
1889                     /*
1890                      * The integer constant 1, intended to indicate
1891                      * that values of type char32_t are UTF−32
1892                      * encoded. If some other encoding is used, the
1893                      * macro shall not be deﬁned and the actual
1894                      * encoding used is implementationdeﬁned.
1895                      */
1896                     tcc_define_symbol(s, "__STDC_UTF_32__", "1");
1897 #endif /* !TCC_TARGET_PE */
1898                     s->cversion = 201112;
1899                 }
1900             }
1901             /*
1902              * silently ignore other values, a current purpose:
1903              * allow to use a tcc as a reference compiler for "make test"
1904              */
1905             break;
1906         case TCC_OPTION_shared:
1907             x = TCC_OUTPUT_DLL;
1908             goto set_output_type;
1909         case TCC_OPTION_soname:
1910             s->soname = tcc_strdup(optarg);
1911             break;
1912         case TCC_OPTION_o:
1913             if (s->outfile) {
1914                 tcc_warning("multiple -o option");
1915                 tcc_free(s->outfile);
1916             }
1917             s->outfile = tcc_strdup(optarg);
1918             break;
1919         case TCC_OPTION_r:
1920             /* generate a .o merging several output files */
1921             s->option_r = 1;
1922             x = TCC_OUTPUT_OBJ;
1923             goto set_output_type;
1924         case TCC_OPTION_isystem:
1925             tcc_add_sysinclude_path(s, optarg);
1926             break;
1927         case TCC_OPTION_include:
1928             cstr_printf(&s->cmdline_defs, "#include \"%s\"\n", optarg);
1929             break;
1930         case TCC_OPTION_nostdinc:
1931             s->nostdinc = 1;
1932             break;
1933         case TCC_OPTION_nostdlib:
1934             s->nostdlib = 1;
1935             break;
1936         case TCC_OPTION_run:
1937 #ifndef TCC_IS_NATIVE
1938             tcc_error("-run is not available in a cross compiler");
1939 #endif
1940             run = optarg;
1941             x = TCC_OUTPUT_MEMORY;
1942             goto set_output_type;
1943         case TCC_OPTION_v:
1944             do ++s->verbose; while (*optarg++ == 'v');
1945             ++noaction;
1946             break;
1947         case TCC_OPTION_f:
1948             if (set_flag(s, options_f, optarg) < 0)
1949                 goto unsupported_option;
1950             break;
1951 #ifdef TCC_TARGET_ARM
1952         case TCC_OPTION_mfloat_abi:
1953             /* tcc doesn't support soft float yet */
1954             if (!strcmp(optarg, "softfp")) {
1955                 s->float_abi = ARM_SOFTFP_FLOAT;
1956                 tcc_undefine_symbol(s, "__ARM_PCS_VFP");
1957             } else if (!strcmp(optarg, "hard"))
1958                 s->float_abi = ARM_HARD_FLOAT;
1959             else
1960                 tcc_error("unsupported float abi '%s'", optarg);
1961             break;
1962 #endif
1963         case TCC_OPTION_m:
1964             if (set_flag(s, options_m, optarg) < 0) {
1965                 if (x = atoi(optarg), x != 32 && x != 64)
1966                     goto unsupported_option;
1967                 if (PTR_SIZE != x/8)
1968                     return x;
1969                 ++noaction;
1970             }
1971             break;
1972         case TCC_OPTION_W:
1973             if (set_flag(s, options_W, optarg) < 0)
1974                 goto unsupported_option;
1975             break;
1976         case TCC_OPTION_w:
1977             s->warn_none = 1;
1978             break;
1979         case TCC_OPTION_rdynamic:
1980             s->rdynamic = 1;
1981             break;
1982         case TCC_OPTION_Wl:
1983             if (linker_arg.size)
1984                 --linker_arg.size, cstr_ccat(&linker_arg, ',');
1985             cstr_cat(&linker_arg, optarg, 0);
1986             if (tcc_set_linker(s, linker_arg.data))
1987                 cstr_free(&linker_arg);
1988             break;
1989         case TCC_OPTION_Wp:
1990             r = optarg;
1991             goto reparse;
1992         case TCC_OPTION_E:
1993             x = TCC_OUTPUT_PREPROCESS;
1994             goto set_output_type;
1995         case TCC_OPTION_P:
1996             s->Pflag = atoi(optarg) + 1;
1997             break;
1998         case TCC_OPTION_MD:
1999             s->gen_deps = 1;
2000             break;
2001         case TCC_OPTION_MF:
2002             s->deps_outfile = tcc_strdup(optarg);
2003             break;
2004         case TCC_OPTION_dumpversion:
2005             printf ("%s\n", TCC_VERSION);
2006             exit(0);
2007             break;
2008         case TCC_OPTION_x:
2009             x = 0;
2010             if (*optarg == 'c')
2011                 x = AFF_TYPE_C;
2012             else if (*optarg == 'a')
2013                 x = AFF_TYPE_ASMPP;
2014             else if (*optarg == 'b')
2015                 x = AFF_TYPE_BIN;
2016             else if (*optarg == 'n')
2017                 x = AFF_TYPE_NONE;
2018             else
2019                 tcc_warning("unsupported language '%s'", optarg);
2020             s->filetype = x | (s->filetype & ~AFF_TYPE_MASK);
2021             break;
2022         case TCC_OPTION_O:
2023             last_o = atoi(optarg);
2024             break;
2025         case TCC_OPTION_print_search_dirs:
2026             x = OPT_PRINT_DIRS;
2027             goto extra_action;
2028         case TCC_OPTION_impdef:
2029             x = OPT_IMPDEF;
2030             goto extra_action;
2031         case TCC_OPTION_ar:
2032             x = OPT_AR;
2033         extra_action:
2034             arg_start = optind - 1;
2035             if (arg_start != noaction)
2036                 tcc_error("cannot parse %s here", r);
2037             tool = x;
2038             break;
2039         case TCC_OPTION_traditional:
2040         case TCC_OPTION_pedantic:
2041         case TCC_OPTION_pipe:
2042         case TCC_OPTION_s:
2043             /* ignored */
2044             break;
2045         default:
2046 unsupported_option:
2047             if (s->warn_unsupported)
2048                 tcc_warning("unsupported option '%s'", r);
2049             break;
2050         }
2051     }
2052     if (last_o > 0)
2053         tcc_define_symbol(s, "__OPTIMIZE__", NULL);
2054     if (linker_arg.size) {
2055         r = linker_arg.data;
2056         goto arg_err;
2057     }
2058     *pargc = argc - arg_start;
2059     *pargv = argv + arg_start;
2060     if (tool)
2061         return tool;
2062     if (optind != noaction)
2063         return 0;
2064     if (s->verbose == 2)
2065         return OPT_PRINT_DIRS;
2066     if (s->verbose)
2067         return OPT_V;
2068     return OPT_HELP;
2069 }
2070
2071 LIBTCCAPI void tcc_set_options(TCCState *s, const char *r)
2072 {
2073     char **argv = NULL;
2074     int argc = 0;
2075     args_parser_make_argv(r, &argc, &argv);
2076     tcc_parse_args(s, &argc, &argv, 0);
2077     dynarray_reset(&argv, &argc);
2078 }
2079
2080 PUB_FUNC void tcc_print_stats(TCCState *s, unsigned total_time)
2081 {
2082     if (total_time < 1)
2083         total_time = 1;
2084     if (total_bytes < 1)
2085         total_bytes = 1;
2086     fprintf(stderr, "* %d idents, %d lines, %d bytes\n"
2087                     "* %0.3f s, %u lines/s, %0.1f MB/s\n",
2088            tok_ident - TOK_IDENT, total_lines, total_bytes,
2089            (double)total_time/1000,
2090            (unsigned)total_lines*1000/total_time,
2091            (double)total_bytes/1000/total_time);
2092 #ifdef MEM_DEBUG
2093     fprintf(stderr, "* %d bytes memory used\n", mem_max_size);
2094 #endif
2095 }