libtcc.c

   1 /*
   2  *  TCC - Tiny C Compiler
   3  *
   4  *  Copyright (c) 2001-2004 Fabrice Bellard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #if !defined ONE_SOURCE || ONE_SOURCE
  22 #include "tccpp.c"
  23 #include "tccgen.c"
  24 #include "tccelf.c"
  25 #include "tccrun.c"
  26 #ifdef TCC_TARGET_I386
  27 #include "i386-gen.c"
  28 #include "i386-link.c"
  29 #include "i386-asm.c"
  30 #elif defined(TCC_TARGET_ARM)
  31 #include "arm-gen.c"
  32 #include "arm-link.c"
  33 #include "arm-asm.c"
  34 #elif defined(TCC_TARGET_ARM64)
  35 #include "arm64-gen.c"
  36 #include "arm64-link.c"
  37 #include "arm-asm.c"
  38 #elif defined(TCC_TARGET_C67)
  39 #include "c67-gen.c"
  40 #include "c67-link.c"
  41 #include "tcccoff.c"
  42 #elif defined(TCC_TARGET_X86_64)
  43 #include "x86_64-gen.c"
  44 #include "x86_64-link.c"
  45 #include "i386-asm.c"
  46 #elif defined(TCC_TARGET_RISCV64)
  47 #include "riscv64-gen.c"
  48 #include "riscv64-link.c"
  49 #include "riscv64-asm.c"
  50 #else
  51 #error unknown target
  52 #endif
  53 #ifdef CONFIG_TCC_ASM
  54 #include "tccasm.c"
  55 #endif
  56 #ifdef TCC_TARGET_PE
  57 #include "tccpe.c"
  58 #endif
  59 #ifdef TCC_TARGET_MACHO
  60 #include "tccmacho.c"
  61 #endif
  62 #endif /* ONE_SOURCE */
  63
  64 #include "tcc.h"
  65
  66 /********************************************************/
  67 /* global variables */
  68
  69 /* XXX: get rid of this ASAP (or maybe not) */
  70 ST_DATA struct TCCState *tcc_state;
  71
  72 #ifdef MEM_DEBUG
  73 static int nb_states;
  74 #endif
  75
  76 /********************************************************/
  77 #ifdef _WIN32
  78 ST_FUNC char *normalize_slashes(char *path)
  79 {
  80     char *p;
  81     for (p = path; *p; ++p)
  82         if (*p == '\\')
  83             *p = '/';
  84     return path;
  85 }
  86
  87 static HMODULE tcc_module;
  88
  89 /* on win32, we suppose the lib and includes are at the location of 'tcc.exe' */
  90 static void tcc_set_lib_path_w32(TCCState *s)
  91 {
  92     char path[1024], *p;
  93     GetModuleFileNameA(tcc_module, path, sizeof path);
  94     p = tcc_basename(normalize_slashes(strlwr(path)));
  95     if (p > path)
  96         --p;
  97     *p = 0;
  98     tcc_set_lib_path(s, path);
  99 }
 100
 101 #ifdef TCC_TARGET_PE
 102 static void tcc_add_systemdir(TCCState *s)
 103 {
 104     char buf[1000];
 105     GetSystemDirectory(buf, sizeof buf);
 106     tcc_add_library_path(s, normalize_slashes(buf));
 107 }
 108 #endif
 109
 110 #ifdef LIBTCC_AS_DLL
 111 BOOL WINAPI DllMain (HINSTANCE hDll, DWORD dwReason, LPVOID lpReserved)
 112 {
 113     if (DLL_PROCESS_ATTACH == dwReason)
 114         tcc_module = hDll;
 115     return TRUE;
 116 }
 117 #endif
 118 #endif
 119
 120 /********************************************************/
 121 #ifndef CONFIG_TCC_SEMLOCK
 122 #define WAIT_SEM()
 123 #define POST_SEM()
 124 #elif defined _WIN32
 125 static int tcc_sem_init;
 126 static CRITICAL_SECTION tcc_cr;
 127 static void wait_sem(void)
 128 {
 129     if (!tcc_sem_init)
 130         InitializeCriticalSection(&tcc_cr), tcc_sem_init = 1;
 131     EnterCriticalSection(&tcc_cr);
 132 }
 133 #define WAIT_SEM() wait_sem()
 134 #define POST_SEM() LeaveCriticalSection(&tcc_cr);
 135 #elif defined __APPLE__
 136 /* Half-compatible MacOS doesn't have non-shared (process local)
 137    semaphores.  Use the dispatch framework for lightweight locks.  */
 138 #include <dispatch/dispatch.h>
 139 static int tcc_sem_init;
 140 static dispatch_semaphore_t tcc_sem;
 141 static void wait_sem(void)
 142 {
 143     if (!tcc_sem_init)
 144       tcc_sem = dispatch_semaphore_create(1), tcc_sem_init = 1;
 145     dispatch_semaphore_wait(tcc_sem, DISPATCH_TIME_FOREVER);
 146 }
 147 #define WAIT_SEM() wait_sem()
 148 #define POST_SEM() dispatch_semaphore_signal(tcc_sem)
 149 #else
 150 #include <semaphore.h>
 151 static int tcc_sem_init;
 152 static sem_t tcc_sem;
 153 static void wait_sem(void)
 154 {
 155     if (!tcc_sem_init)
 156         sem_init(&tcc_sem, 0, 1), tcc_sem_init = 1;
 157     while (sem_wait (&tcc_sem) < 0 && errno == EINTR);
 158 }
 159 #define WAIT_SEM() wait_sem()
 160 #define POST_SEM() sem_post(&tcc_sem)
 161 #endif
 162
 163 /********************************************************/
 164 /* copy a string and truncate it. */
 165 ST_FUNC char *pstrcpy(char *buf, size_t buf_size, const char *s)
 166 {
 167     char *q, *q_end;
 168     int c;
 169
 170     if (buf_size > 0) {
 171         q = buf;
 172         q_end = buf + buf_size - 1;
 173         while (q < q_end) {
 174             c = *s++;
 175             if (c == '\0')
 176                 break;
 177             *q++ = c;
 178         }
 179         *q = '\0';
 180     }
 181     return buf;
 182 }
 183
 184 /* strcat and truncate. */
 185 ST_FUNC char *pstrcat(char *buf, size_t buf_size, const char *s)
 186 {
 187     size_t len;
 188     len = strlen(buf);
 189     if (len < buf_size)
 190         pstrcpy(buf + len, buf_size - len, s);
 191     return buf;
 192 }
 193
 194 ST_FUNC char *pstrncpy(char *out, const char *in, size_t num)
 195 {
 196     memcpy(out, in, num);
 197     out[num] = '\0';
 198     return out;
 199 }
 200
 201 /* extract the basename of a file */
 202 PUB_FUNC char *tcc_basename(const char *name)
 203 {
 204     char *p = strchr(name, 0);
 205     while (p > name && !IS_DIRSEP(p[-1]))
 206         --p;
 207     return p;
 208 }
 209
 210 /* extract extension part of a file
 211  *
 212  * (if no extension, return pointer to end-of-string)
 213  */
 214 PUB_FUNC char *tcc_fileextension (const char *name)
 215 {
 216     char *b = tcc_basename(name);
 217     char *e = strrchr(b, '.');
 218     return e ? e : strchr(b, 0);
 219 }
 220
 221 /********************************************************/
 222 /* memory management */
 223
 224 #undef free
 225 #undef malloc
 226 #undef realloc
 227
 228 #ifndef MEM_DEBUG
 229
 230 PUB_FUNC void tcc_free(void *ptr)
 231 {
 232     free(ptr);
 233 }
 234
 235 PUB_FUNC void *tcc_malloc(unsigned long size)
 236 {
 237     void *ptr;
 238     ptr = malloc(size);
 239     if (!ptr && size)
 240         _tcc_error("memory full (malloc)");
 241     return ptr;
 242 }
 243
 244 PUB_FUNC void *tcc_mallocz(unsigned long size)
 245 {
 246     void *ptr;
 247     ptr = tcc_malloc(size);
 248     memset(ptr, 0, size);
 249     return ptr;
 250 }
 251
 252 PUB_FUNC void *tcc_realloc(void *ptr, unsigned long size)
 253 {
 254     void *ptr1;
 255     ptr1 = realloc(ptr, size);
 256     if (!ptr1 && size)
 257         _tcc_error("memory full (realloc)");
 258     return ptr1;
 259 }
 260
 261 PUB_FUNC char *tcc_strdup(const char *str)
 262 {
 263     char *ptr;
 264     ptr = tcc_malloc(strlen(str) + 1);
 265     strcpy(ptr, str);
 266     return ptr;
 267 }
 268
 269 #else
 270
 271 #define MEM_DEBUG_MAGIC1 0xFEEDDEB1
 272 #define MEM_DEBUG_MAGIC2 0xFEEDDEB2
 273 #define MEM_DEBUG_MAGIC3 0xFEEDDEB3
 274 #define MEM_DEBUG_FILE_LEN 40
 275 #define MEM_DEBUG_CHECK3(header) \
 276     ((mem_debug_header_t*)((char*)header + header->size))->magic3
 277 #define MEM_USER_PTR(header) \
 278     ((char *)header + offsetof(mem_debug_header_t, magic3))
 279 #define MEM_HEADER_PTR(ptr) \
 280     (mem_debug_header_t *)((char*)ptr - offsetof(mem_debug_header_t, magic3))
 281
 282 struct mem_debug_header {
 283     unsigned magic1;
 284     unsigned size;
 285     struct mem_debug_header *prev;
 286     struct mem_debug_header *next;
 287     int line_num;
 288     char file_name[MEM_DEBUG_FILE_LEN + 1];
 289     unsigned magic2;
 290     ALIGNED(16) unsigned magic3;
 291 };
 292
 293 typedef struct mem_debug_header mem_debug_header_t;
 294
 295 static mem_debug_header_t *mem_debug_chain;
 296 static unsigned mem_cur_size;
 297 static unsigned mem_max_size;
 298
 299 static mem_debug_header_t *malloc_check(void *ptr, const char *msg)
 300 {
 301     mem_debug_header_t * header = MEM_HEADER_PTR(ptr);
 302     if (header->magic1 != MEM_DEBUG_MAGIC1 ||
 303         header->magic2 != MEM_DEBUG_MAGIC2 ||
 304         MEM_DEBUG_CHECK3(header) != MEM_DEBUG_MAGIC3 ||
 305         header->size == (unsigned)-1) {
 306         fprintf(stderr, "%s check failed\n", msg);
 307         if (header->magic1 == MEM_DEBUG_MAGIC1)
 308             fprintf(stderr, "%s:%u: block allocated here.\n",
 309                 header->file_name, header->line_num);
 310         exit(1);
 311     }
 312     return header;
 313 }
 314
 315 PUB_FUNC void *tcc_malloc_debug(unsigned long size, const char *file, int line)
 316 {
 317     int ofs;
 318     mem_debug_header_t *header;
 319
 320     header = malloc(sizeof(mem_debug_header_t) + size);
 321     if (!header)
 322         _tcc_error("memory full (malloc)");
 323
 324     header->magic1 = MEM_DEBUG_MAGIC1;
 325     header->magic2 = MEM_DEBUG_MAGIC2;
 326     header->size = size;
 327     MEM_DEBUG_CHECK3(header) = MEM_DEBUG_MAGIC3;
 328     header->line_num = line;
 329     ofs = strlen(file) - MEM_DEBUG_FILE_LEN;
 330     strncpy(header->file_name, file + (ofs > 0 ? ofs : 0), MEM_DEBUG_FILE_LEN);
 331     header->file_name[MEM_DEBUG_FILE_LEN] = 0;
 332
 333     header->next = mem_debug_chain;
 334     header->prev = NULL;
 335     if (header->next)
 336         header->next->prev = header;
 337     mem_debug_chain = header;
 338
 339     mem_cur_size += size;
 340     if (mem_cur_size > mem_max_size)
 341         mem_max_size = mem_cur_size;
 342
 343     return MEM_USER_PTR(header);
 344 }
 345
 346 PUB_FUNC void tcc_free_debug(void *ptr)
 347 {
 348     mem_debug_header_t *header;
 349     if (!ptr)
 350         return;
 351     header = malloc_check(ptr, "tcc_free");
 352     mem_cur_size -= header->size;
 353     header->size = (unsigned)-1;
 354     if (header->next)
 355         header->next->prev = header->prev;
 356     if (header->prev)
 357         header->prev->next = header->next;
 358     if (header == mem_debug_chain)
 359         mem_debug_chain = header->next;
 360     free(header);
 361 }
 362
 363 PUB_FUNC void *tcc_mallocz_debug(unsigned long size, const char *file, int line)
 364 {
 365     void *ptr;
 366     ptr = tcc_malloc_debug(size,file,line);
 367     memset(ptr, 0, size);
 368     return ptr;
 369 }
 370
 371 PUB_FUNC void *tcc_realloc_debug(void *ptr, unsigned long size, const char *file, int line)
 372 {
 373     mem_debug_header_t *header;
 374     int mem_debug_chain_update = 0;
 375     if (!ptr)
 376         return tcc_malloc_debug(size, file, line);
 377     header = malloc_check(ptr, "tcc_realloc");
 378     mem_cur_size -= header->size;
 379     mem_debug_chain_update = (header == mem_debug_chain);
 380     header = realloc(header, sizeof(mem_debug_header_t) + size);
 381     if (!header)
 382         _tcc_error("memory full (realloc)");
 383     header->size = size;
 384     MEM_DEBUG_CHECK3(header) = MEM_DEBUG_MAGIC3;
 385     if (header->next)
 386         header->next->prev = header;
 387     if (header->prev)
 388         header->prev->next = header;
 389     if (mem_debug_chain_update)
 390         mem_debug_chain = header;
 391     mem_cur_size += size;
 392     if (mem_cur_size > mem_max_size)
 393         mem_max_size = mem_cur_size;
 394     return MEM_USER_PTR(header);
 395 }
 396
 397 PUB_FUNC char *tcc_strdup_debug(const char *str, const char *file, int line)
 398 {
 399     char *ptr;
 400     ptr = tcc_malloc_debug(strlen(str) + 1, file, line);
 401     strcpy(ptr, str);
 402     return ptr;
 403 }
 404
 405 PUB_FUNC void tcc_memcheck(void)
 406 {
 407     if (mem_cur_size) {
 408         mem_debug_header_t *header = mem_debug_chain;
 409         fprintf(stderr, "MEM_DEBUG: mem_leak= %d bytes, mem_max_size= %d bytes\n",
 410             mem_cur_size, mem_max_size);
 411         while (header) {
 412             fprintf(stderr, "%s:%u: error: %u bytes leaked\n",
 413                 header->file_name, header->line_num, header->size);
 414             header = header->next;
 415         }
 416 #if MEM_DEBUG-0 == 2
 417         exit(2);
 418 #endif
 419     }
 420 }
 421 #endif /* MEM_DEBUG */
 422
 423 #define free(p) use_tcc_free(p)
 424 #define malloc(s) use_tcc_malloc(s)
 425 #define realloc(p, s) use_tcc_realloc(p, s)
 426
 427 /********************************************************/
 428 /* dynarrays */
 429
 430 ST_FUNC void dynarray_add(void *ptab, int *nb_ptr, void *data)
 431 {
 432     int nb, nb_alloc;
 433     void **pp;
 434
 435     nb = *nb_ptr;
 436     pp = *(void ***)ptab;
 437     /* every power of two we double array size */
 438     if ((nb & (nb - 1)) == 0) {
 439         if (!nb)
 440             nb_alloc = 1;
 441         else
 442             nb_alloc = nb * 2;
 443         pp = tcc_realloc(pp, nb_alloc * sizeof(void *));
 444         *(void***)ptab = pp;
 445     }
 446     pp[nb++] = data;
 447     *nb_ptr = nb;
 448 }
 449
 450 ST_FUNC void dynarray_reset(void *pp, int *n)
 451 {
 452     void **p;
 453     for (p = *(void***)pp; *n; ++p, --*n)
 454         if (*p)
 455             tcc_free(*p);
 456     tcc_free(*(void**)pp);
 457     *(void**)pp = NULL;
 458 }
 459
 460 static void tcc_split_path(TCCState *s, void *p_ary, int *p_nb_ary, const char *in)
 461 {
 462     const char *p;
 463     do {
 464         int c;
 465         CString str;
 466
 467         cstr_new(&str);
 468         for (p = in; c = *p, c != '\0' && c != PATHSEP[0]; ++p) {
 469             if (c == '{' && p[1] && p[2] == '}') {
 470                 c = p[1], p += 2;
 471                 if (c == 'B')
 472                     cstr_cat(&str, s->tcc_lib_path, -1);
 473                 if (c == 'f' && file) {
 474                     /* substitute current file's dir */
 475                     const char *f = file->true_filename;
 476                     const char *b = tcc_basename(f);
 477                     if (b > f)
 478                         cstr_cat(&str, f, b - f - 1);
 479                     else
 480                         cstr_cat(&str, ".", 1);
 481                 }
 482             } else {
 483                 cstr_ccat(&str, c);
 484             }
 485         }
 486         if (str.size) {
 487             cstr_ccat(&str, '\0');
 488             dynarray_add(p_ary, p_nb_ary, tcc_strdup(str.data));
 489         }
 490         cstr_free(&str);
 491         in = p+1;
 492     } while (*p);
 493 }
 494
 495 /********************************************************/
 496
 497 static void strcat_vprintf(char *buf, int buf_size, const char *fmt, va_list ap)
 498 {
 499     int len;
 500     len = strlen(buf);
 501     vsnprintf(buf + len, buf_size - len, fmt, ap);
 502 }
 503
 504 static void strcat_printf(char *buf, int buf_size, const char *fmt, ...)
 505 {
 506     va_list ap;
 507     va_start(ap, fmt);
 508     strcat_vprintf(buf, buf_size, fmt, ap);
 509     va_end(ap);
 510 }
 511
 512 #define ERROR_WARN 0
 513 #define ERROR_NOABORT 1
 514 #define ERROR_ERROR 2
 515
 516 PUB_FUNC void tcc_enter_state(TCCState *s1)
 517 {
 518     WAIT_SEM();
 519     tcc_state = s1;
 520 }
 521
 522 PUB_FUNC void tcc_exit_state(void)
 523 {
 524     tcc_state = NULL;
 525     POST_SEM();
 526 }
 527
 528 static void error1(int mode, const char *fmt, va_list ap)
 529 {
 530     char buf[2048];
 531     BufferedFile **pf, *f;
 532     TCCState *s1 = tcc_state;
 533
 534     buf[0] = '\0';
 535     if (s1 == NULL)
 536         /* can happen only if called from tcc_malloc(): 'out of memory' */
 537         goto no_file;
 538
 539     if (s1 && !s1->error_set_jmp_enabled)
 540         /* tcc_state just was set by tcc_enter_state() */
 541         tcc_exit_state();
 542
 543     if (mode == ERROR_WARN) {
 544         if (s1->warn_none)
 545             return;
 546         if (s1->warn_error)
 547             mode = ERROR_ERROR;
 548     }
 549
 550     f = NULL;
 551     if (s1->error_set_jmp_enabled) { /* we're called while parsing a file */
 552         /* use upper file if inline ":asm:" or token ":paste:" */
 553         for (f = file; f && f->filename[0] == ':'; f = f->prev)
 554             ;
 555     }
 556     if (f) {
 557         for(pf = s1->include_stack; pf < s1->include_stack_ptr; pf++)
 558             strcat_printf(buf, sizeof(buf), "In file included from %s:%d:\n",
 559                 (*pf)->filename, (*pf)->line_num);
 560         strcat_printf(buf, sizeof(buf), "%s:%d: ",
 561             f->filename, f->line_num - !!(tok_flags & TOK_FLAG_BOL));
 562     } else if (s1->current_filename) {
 563         strcat_printf(buf, sizeof(buf), "%s: ", s1->current_filename);
 564     }
 565
 566 no_file:
 567     if (0 == buf[0])
 568         strcat_printf(buf, sizeof(buf), "tcc: ");
 569     if (mode == ERROR_WARN)
 570         strcat_printf(buf, sizeof(buf), "warning: ");
 571     else
 572         strcat_printf(buf, sizeof(buf), "error: ");
 573     strcat_vprintf(buf, sizeof(buf), fmt, ap);
 574     if (!s1 || !s1->error_func) {
 575         /* default case: stderr */
 576         if (s1 && s1->output_type == TCC_OUTPUT_PREPROCESS && s1->ppfp == stdout)
 577             /* print a newline during tcc -E */
 578             printf("\n"), fflush(stdout);
 579         fflush(stdout); /* flush -v output */
 580         fprintf(stderr, "%s\n", buf);
 581         fflush(stderr); /* print error/warning now (win32) */
 582     } else {
 583         s1->error_func(s1->error_opaque, buf);
 584     }
 585     if (s1) {
 586         if (mode != ERROR_WARN)
 587             s1->nb_errors++;
 588         if (mode != ERROR_ERROR)
 589             return;
 590         if (s1->error_set_jmp_enabled)
 591             longjmp(s1->error_jmp_buf, 1);
 592     }
 593     exit(1);
 594 }
 595
 596 LIBTCCAPI void tcc_set_error_func(TCCState *s, void *error_opaque, TCCErrorFunc error_func)
 597 {
 598     s->error_opaque = error_opaque;
 599     s->error_func = error_func;
 600 }
 601
 602 LIBTCCAPI TCCErrorFunc tcc_get_error_func(TCCState *s)
 603 {
 604     return s->error_func;
 605 }
 606
 607 LIBTCCAPI void *tcc_get_error_opaque(TCCState *s)
 608 {
 609     return s->error_opaque;
 610 }
 611
 612 /* error without aborting current compilation */
 613 PUB_FUNC void _tcc_error_noabort(const char *fmt, ...)
 614 {
 615     va_list ap;
 616     va_start(ap, fmt);
 617     error1(ERROR_NOABORT, fmt, ap);
 618     va_end(ap);
 619 }
 620
 621 PUB_FUNC void _tcc_error(const char *fmt, ...)
 622 {
 623     va_list ap;
 624     va_start(ap, fmt);
 625     for (;;) error1(ERROR_ERROR, fmt, ap);
 626 }
 627
 628 PUB_FUNC void _tcc_warning(const char *fmt, ...)
 629 {
 630     va_list ap;
 631     va_start(ap, fmt);
 632     error1(ERROR_WARN, fmt, ap);
 633     va_end(ap);
 634 }
 635
 636 /********************************************************/
 637 /* I/O layer */
 638
 639 ST_FUNC void tcc_open_bf(TCCState *s1, const char *filename, int initlen)
 640 {
 641     BufferedFile *bf;
 642     int buflen = initlen ? initlen : IO_BUF_SIZE;
 643
 644     bf = tcc_mallocz(sizeof(BufferedFile) + buflen);
 645     bf->buf_ptr = bf->buffer;
 646     bf->buf_end = bf->buffer + initlen;
 647     bf->buf_end[0] = CH_EOB; /* put eob symbol */
 648     pstrcpy(bf->filename, sizeof(bf->filename), filename);
 649 #ifdef _WIN32
 650     normalize_slashes(bf->filename);
 651 #endif
 652     bf->true_filename = bf->filename;
 653     bf->line_num = 1;
 654     bf->ifdef_stack_ptr = s1->ifdef_stack_ptr;
 655     bf->fd = -1;
 656     bf->prev = file;
 657     file = bf;
 658     tok_flags = TOK_FLAG_BOL | TOK_FLAG_BOF;
 659 }
 660
 661 ST_FUNC void tcc_close(void)
 662 {
 663     TCCState *s1 = tcc_state;
 664     BufferedFile *bf = file;
 665     if (bf->fd > 0) {
 666         close(bf->fd);
 667         total_lines += bf->line_num;
 668     }
 669     if (bf->true_filename != bf->filename)
 670         tcc_free(bf->true_filename);
 671     file = bf->prev;
 672     tcc_free(bf);
 673 }
 674
 675 static int _tcc_open(TCCState *s1, const char *filename)
 676 {
 677     int fd;
 678     if (strcmp(filename, "-") == 0)
 679         fd = 0, filename = "<stdin>";
 680     else
 681         fd = open(filename, O_RDONLY | O_BINARY);
 682     if ((s1->verbose == 2 && fd >= 0) || s1->verbose == 3)
 683         printf("%s %*s%s\n", fd < 0 ? "nf":"->",
 684                (int)(s1->include_stack_ptr - s1->include_stack), "", filename);
 685     return fd;
 686 }
 687
 688 ST_FUNC int tcc_open(TCCState *s1, const char *filename)
 689 {
 690     int fd = _tcc_open(s1, filename);
 691     if (fd < 0)
 692         return -1;
 693     tcc_open_bf(s1, filename, 0);
 694     file->fd = fd;
 695     return 0;
 696 }
 697
 698 /* compile the file opened in 'file'. Return non zero if errors. */
 699 static int tcc_compile(TCCState *s1, int filetype, const char *str, int fd)
 700 {
 701     /* Here we enter the code section where we use the global variables for
 702        parsing and code generation (tccpp.c, tccgen.c, <target>-gen.c).
 703        Other threads need to wait until we're done.
 704
 705        Alternatively we could use thread local storage for those global
 706        variables, which may or may not have advantages */
 707
 708     tcc_enter_state(s1);
 709
 710     if (setjmp(s1->error_jmp_buf) == 0) {
 711         s1->error_set_jmp_enabled = 1;
 712         s1->nb_errors = 0;
 713
 714         if (fd == -1) {
 715             int len = strlen(str);
 716             tcc_open_bf(s1, "<string>", len);
 717             memcpy(file->buffer, str, len);
 718         } else {
 719             tcc_open_bf(s1, str, 0);
 720             file->fd = fd;
 721         }
 722
 723         tccelf_begin_file(s1);
 724         preprocess_start(s1, filetype);
 725         tccgen_init(s1);
 726         if (s1->output_type == TCC_OUTPUT_PREPROCESS) {
 727             tcc_preprocess(s1);
 728         } else if (filetype & (AFF_TYPE_ASM | AFF_TYPE_ASMPP)) {
 729 #ifdef CONFIG_TCC_ASM
 730             tcc_assemble(s1, !!(filetype & AFF_TYPE_ASMPP));
 731 #else
 732             tcc_error_noabort("asm not supported");
 733 #endif
 734         } else {
 735             tccgen_compile(s1);
 736         }
 737     }
 738     s1->error_set_jmp_enabled = 0;
 739     tccgen_finish(s1);
 740     preprocess_end(s1);
 741     tcc_exit_state();
 742
 743     tccelf_end_file(s1);
 744     return s1->nb_errors != 0 ? -1 : 0;
 745 }
 746
 747 LIBTCCAPI int tcc_compile_string(TCCState *s, const char *str)
 748 {
 749     return tcc_compile(s, s->filetype, str, -1);
 750 }
 751
 752 /* define a preprocessor symbol. value can be NULL, sym can be "sym=val" */
 753 LIBTCCAPI void tcc_define_symbol(TCCState *s1, const char *sym, const char *value)
 754 {
 755     const char *eq;
 756     if (NULL == (eq = strchr(sym, '=')))
 757         eq = strchr(sym, 0);
 758     if (NULL == value)
 759         value = *eq ? eq + 1 : "1";
 760     cstr_printf(&s1->cmdline_defs, "#define %.*s %s\n", (int)(eq-sym), sym, value);
 761 }
 762
 763 /* undefine a preprocessor symbol */
 764 LIBTCCAPI void tcc_undefine_symbol(TCCState *s1, const char *sym)
 765 {
 766     cstr_printf(&s1->cmdline_defs, "#undef %s\n", sym);
 767 }
 768
 769
 770 LIBTCCAPI TCCState *tcc_new(void)
 771 {
 772     TCCState *s;
 773
 774     s = tcc_mallocz(sizeof(TCCState));
 775     if (!s)
 776         return NULL;
 777 #ifdef MEM_DEBUG
 778     ++nb_states;
 779 #endif
 780
 781 #undef gnu_ext
 782
 783     s->gnu_ext = 1;
 784     s->tcc_ext = 1;
 785     s->nocommon = 1;
 786     s->dollars_in_identifiers = 1; /*on by default like in gcc/clang*/
 787     s->cversion = 199901; /* default unless -std=c11 is supplied */
 788     s->warn_implicit_function_declaration = 1;
 789     s->ms_extensions = 1;
 790
 791 #ifdef CHAR_IS_UNSIGNED
 792     s->char_is_unsigned = 1;
 793 #endif
 794 #ifdef TCC_TARGET_I386
 795     s->seg_size = 32;
 796 #endif
 797     /* enable this if you want symbols with leading underscore on windows: */
 798 #if defined TCC_TARGET_MACHO /* || defined TCC_TARGET_PE */
 799     s->leading_underscore = 1;
 800 #endif
 801     s->ppfp = stdout;
 802     /* might be used in error() before preprocess_start() */
 803     s->include_stack_ptr = s->include_stack;
 804
 805     tccelf_new(s);
 806
 807 #ifdef _WIN32
 808     tcc_set_lib_path_w32(s);
 809 #else
 810     tcc_set_lib_path(s, CONFIG_TCCDIR);
 811 #endif
 812
 813     {
 814         /* define __TINYC__ 92X  */
 815         char buffer[32]; int a,b,c;
 816         sscanf(TCC_VERSION, "%d.%d.%d", &a, &b, &c);
 817         sprintf(buffer, "%d", a*10000 + b*100 + c);
 818         tcc_define_symbol(s, "__TINYC__", buffer);
 819     }
 820
 821     /* standard defines */
 822     tcc_define_symbol(s, "__STDC__", NULL);
 823     tcc_define_symbol(s, "__STDC_VERSION__", "199901L");
 824     tcc_define_symbol(s, "__STDC_HOSTED__", NULL);
 825
 826     /* target defines */
 827 #if defined(TCC_TARGET_I386)
 828     tcc_define_symbol(s, "__i386__", NULL);
 829     tcc_define_symbol(s, "__i386", NULL);
 830     tcc_define_symbol(s, "i386", NULL);
 831 #elif defined(TCC_TARGET_X86_64)
 832     tcc_define_symbol(s, "__x86_64__", NULL);
 833 #elif defined(TCC_TARGET_ARM)
 834     tcc_define_symbol(s, "__ARM_ARCH_4__", NULL);
 835     tcc_define_symbol(s, "__arm_elf__", NULL);
 836     tcc_define_symbol(s, "__arm_elf", NULL);
 837     tcc_define_symbol(s, "arm_elf", NULL);
 838     tcc_define_symbol(s, "__arm__", NULL);
 839     tcc_define_symbol(s, "__arm", NULL);
 840     tcc_define_symbol(s, "arm", NULL);
 841     tcc_define_symbol(s, "__APCS_32__", NULL);
 842     tcc_define_symbol(s, "__ARMEL__", NULL);
 843 #if defined(TCC_ARM_EABI)
 844     tcc_define_symbol(s, "__ARM_EABI__", NULL);
 845 #endif
 846 #if defined(TCC_ARM_HARDFLOAT)
 847     s->float_abi = ARM_HARD_FLOAT;
 848     tcc_define_symbol(s, "__ARM_PCS_VFP", NULL);
 849 #else
 850     s->float_abi = ARM_SOFTFP_FLOAT;
 851 #endif
 852 #elif defined(TCC_TARGET_ARM64)
 853     tcc_define_symbol(s, "__aarch64__", NULL);
 854 #elif defined TCC_TARGET_C67
 855     tcc_define_symbol(s, "__C67__", NULL);
 856 #elif defined TCC_TARGET_RISCV64
 857     tcc_define_symbol(s, "__riscv", NULL);
 858     tcc_define_symbol(s, "__riscv_xlen", "64");
 859     tcc_define_symbol(s, "__riscv_flen", "64");
 860     tcc_define_symbol(s, "__riscv_div", NULL);
 861     tcc_define_symbol(s, "__riscv_mul", NULL);
 862     tcc_define_symbol(s, "__riscv_fdiv", NULL);
 863     tcc_define_symbol(s, "__riscv_fsqrt", NULL);
 864     tcc_define_symbol(s, "__riscv_float_abi_double", NULL);
 865 #endif
 866
 867 #ifdef TCC_TARGET_PE
 868     tcc_define_symbol(s, "_WIN32", NULL);
 869     tcc_define_symbol(s, "__declspec(x)", "__attribute__((x))");
 870     tcc_define_symbol(s, "__cdecl", "");
 871 # ifdef TCC_TARGET_X86_64
 872     tcc_define_symbol(s, "_WIN64", NULL);
 873 # endif
 874 #else
 875     tcc_define_symbol(s, "__unix__", NULL);
 876     tcc_define_symbol(s, "__unix", NULL);
 877     tcc_define_symbol(s, "unix", NULL);
 878 # if defined(__linux__)
 879     tcc_define_symbol(s, "__linux__", NULL);
 880     tcc_define_symbol(s, "__linux", NULL);
 881 # endif
 882 # if defined(__FreeBSD__)
 883     tcc_define_symbol(s, "__FreeBSD__", "__FreeBSD__");
 884     /* No 'Thread Storage Local' on FreeBSD with tcc */
 885     tcc_define_symbol(s, "__NO_TLS", NULL);
 886 # endif
 887 # if defined(__FreeBSD_kernel__)
 888     tcc_define_symbol(s, "__FreeBSD_kernel__", NULL);
 889 # endif
 890 # if defined(__NetBSD__)
 891     tcc_define_symbol(s, "__NetBSD__", "__NetBSD__");
 892 # endif
 893 # if defined(__OpenBSD__)
 894     tcc_define_symbol(s, "__OpenBSD__", "__OpenBSD__");
 895 # endif
 896 #endif
 897
 898     /* TinyCC & gcc defines */
 899 #if PTR_SIZE == 4
 900     /* 32bit systems. */
 901     tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned int");
 902     tcc_define_symbol(s, "__PTRDIFF_TYPE__", "int");
 903     tcc_define_symbol(s, "__ILP32__", NULL);
 904 #elif LONG_SIZE == 4
 905     /* 64bit Windows. */
 906     tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned long long");
 907     tcc_define_symbol(s, "__PTRDIFF_TYPE__", "long long");
 908     tcc_define_symbol(s, "__LLP64__", NULL);
 909 #else
 910     /* Other 64bit systems. */
 911     tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned long");
 912     tcc_define_symbol(s, "__PTRDIFF_TYPE__", "long");
 913     tcc_define_symbol(s, "__LP64__", NULL);
 914 #endif
 915     tcc_define_symbol(s, "__SIZEOF_POINTER__", PTR_SIZE == 4 ? "4" : "8");
 916
 917 #ifdef TCC_TARGET_PE
 918     tcc_define_symbol(s, "__WCHAR_TYPE__", "unsigned short");
 919     tcc_define_symbol(s, "__WINT_TYPE__", "unsigned short");
 920 #else
 921     tcc_define_symbol(s, "__WCHAR_TYPE__", "int");
 922     /* wint_t is unsigned int by default, but (signed) int on BSDs
 923        and unsigned short on windows.  Other OSes might have still
 924        other conventions, sigh.  */
 925 # if defined(__FreeBSD__) || defined (__FreeBSD_kernel__) \
 926   || defined(__NetBSD__) || defined(__OpenBSD__)
 927     tcc_define_symbol(s, "__WINT_TYPE__", "int");
 928 #  ifdef __FreeBSD__
 929     /* define __GNUC__ to have some useful stuff from sys/cdefs.h
 930        that are unconditionally used in FreeBSDs other system headers :/ */
 931     tcc_define_symbol(s, "__GNUC__", "2");
 932     tcc_define_symbol(s, "__GNUC_MINOR__", "7");
 933     tcc_define_symbol(s, "__builtin_alloca", "alloca");
 934 #  endif
 935 # else
 936     tcc_define_symbol(s, "__WINT_TYPE__", "unsigned int");
 937     /* glibc defines */
 938     tcc_define_symbol(s, "__REDIRECT(name, proto, alias)",
 939         "name proto __asm__ (#alias)");
 940     tcc_define_symbol(s, "__REDIRECT_NTH(name, proto, alias)",
 941         "name proto __asm__ (#alias) __THROW");
 942 # endif
 943     /* Some GCC builtins that are simple to express as macros.  */
 944     tcc_define_symbol(s, "__builtin_extract_return_addr(x)", "x");
 945 #endif /* ndef TCC_TARGET_PE */
 946 #ifdef TCC_TARGET_MACHO
 947     /* emulate APPLE-GCC to make libc's headerfiles compile: */
 948     tcc_define_symbol(s, "__APPLE__", "1");
 949     tcc_define_symbol(s, "__GNUC__", "4");   /* darwin emits warning on GCC<4 */
 950     tcc_define_symbol(s, "__APPLE_CC__", "1"); /* for <TargetConditionals.h> */
 951     tcc_define_symbol(s, "_DONT_USE_CTYPE_INLINE_", "1");
 952     tcc_define_symbol(s, "__builtin_alloca", "alloca"); /* as we claim GNUC */
 953     /* used by math.h */
 954     tcc_define_symbol(s, "__builtin_huge_val()", "1e500");
 955     tcc_define_symbol(s, "__builtin_huge_valf()", "1e50f");
 956     tcc_define_symbol(s, "__builtin_huge_vall()", "1e5000L");
 957     tcc_define_symbol(s, "__builtin_nanf(ignored_string)", "__nan()");
 958     /* used by _fd_def.h */
 959     tcc_define_symbol(s, "__builtin_bzero(p, ignored_size)", "bzero(p, sizeof(*(p)))");
 960     /* used by floats.h to implement FLT_ROUNDS C99 macro. 1 == to nearest */
 961     tcc_define_symbol(s, "__builtin_flt_rounds()", "1");
 962
 963     /* avoids usage of GCC/clang specific builtins in libc-headerfiles: */
 964     tcc_define_symbol(s, "__FINITE_MATH_ONLY__", "1");
 965     tcc_define_symbol(s, "_FORTIFY_SOURCE", "0");
 966 #endif /* ndef TCC_TARGET_MACHO */
 967
 968 #if LONG_SIZE == 4
 969     tcc_define_symbol(s, "__SIZEOF_LONG__", "4");
 970     tcc_define_symbol(s, "__LONG_MAX__", "0x7fffffffL");
 971 #else
 972     tcc_define_symbol(s, "__SIZEOF_LONG__", "8");
 973     tcc_define_symbol(s, "__LONG_MAX__", "0x7fffffffffffffffL");
 974 #endif
 975     tcc_define_symbol(s, "__SIZEOF_INT__", "4");
 976     tcc_define_symbol(s, "__SIZEOF_LONG_LONG__", "8");
 977     tcc_define_symbol(s, "__CHAR_BIT__", "8");
 978     tcc_define_symbol(s, "__ORDER_LITTLE_ENDIAN__", "1234");
 979     tcc_define_symbol(s, "__ORDER_BIG_ENDIAN__", "4321");
 980     tcc_define_symbol(s, "__BYTE_ORDER__", "__ORDER_LITTLE_ENDIAN__");
 981     tcc_define_symbol(s, "__INT_MAX__", "0x7fffffff");
 982     tcc_define_symbol(s, "__LONG_LONG_MAX__", "0x7fffffffffffffffLL");
 983     tcc_define_symbol(s, "__builtin_offsetof(type,field)", "((__SIZE_TYPE__) &((type *)0)->field)");
 984     return s;
 985 }
 986
 987 LIBTCCAPI void tcc_delete(TCCState *s1)
 988 {
 989     /* free sections */
 990     tccelf_delete(s1);
 991
 992     /* free library paths */
 993     dynarray_reset(&s1->library_paths, &s1->nb_library_paths);
 994     dynarray_reset(&s1->crt_paths, &s1->nb_crt_paths);
 995
 996     /* free include paths */
 997     dynarray_reset(&s1->include_paths, &s1->nb_include_paths);
 998     dynarray_reset(&s1->sysinclude_paths, &s1->nb_sysinclude_paths);
 999
1000     tcc_free(s1->tcc_lib_path);
1001     tcc_free(s1->soname);
1002     tcc_free(s1->rpath);
1003     tcc_free(s1->init_symbol);
1004     tcc_free(s1->fini_symbol);
1005     tcc_free(s1->outfile);
1006     tcc_free(s1->deps_outfile);
1007     dynarray_reset(&s1->files, &s1->nb_files);
1008     dynarray_reset(&s1->target_deps, &s1->nb_target_deps);
1009     dynarray_reset(&s1->pragma_libs, &s1->nb_pragma_libs);
1010     dynarray_reset(&s1->argv, &s1->argc);
1011
1012     cstr_free(&s1->cmdline_defs);
1013     cstr_free(&s1->cmdline_incl);
1014 #ifdef TCC_IS_NATIVE
1015     /* free runtime memory */
1016     tcc_run_free(s1);
1017 #endif
1018
1019     tcc_free(s1);
1020 #ifdef MEM_DEBUG
1021     if (0 == --nb_states)
1022         tcc_memcheck();
1023 #endif
1024 }
1025
1026 LIBTCCAPI int tcc_set_output_type(TCCState *s, int output_type)
1027 {
1028     s->output_type = output_type;
1029
1030     /* always elf for objects */
1031     if (output_type == TCC_OUTPUT_OBJ)
1032         s->output_format = TCC_OUTPUT_FORMAT_ELF;
1033
1034     if (s->char_is_unsigned)
1035         tcc_define_symbol(s, "__CHAR_UNSIGNED__", NULL);
1036
1037     if (s->cversion == 201112) {
1038         tcc_undefine_symbol(s, "__STDC_VERSION__");
1039         tcc_define_symbol(s, "__STDC_VERSION__", "201112L");
1040         tcc_define_symbol(s, "__STDC_NO_ATOMICS__", NULL);
1041         tcc_define_symbol(s, "__STDC_NO_COMPLEX__", NULL);
1042         tcc_define_symbol(s, "__STDC_NO_THREADS__", NULL);
1043 #ifndef TCC_TARGET_PE
1044         /* on Linux, this conflicts with a define introduced by
1045            /usr/include/stdc-predef.h included by glibc libs
1046         tcc_define_symbol(s, "__STDC_ISO_10646__", "201605L"); */
1047         tcc_define_symbol(s, "__STDC_UTF_16__", NULL);
1048         tcc_define_symbol(s, "__STDC_UTF_32__", NULL);
1049 #endif
1050     }
1051
1052     if (s->optimize > 0)
1053         tcc_define_symbol(s, "__OPTIMIZE__", NULL);
1054
1055     if (s->option_pthread)
1056         tcc_define_symbol(s, "_REENTRANT", NULL);
1057
1058     if (s->leading_underscore)
1059         tcc_define_symbol(s, "__leading_underscore", NULL);
1060
1061     if (!s->nostdinc) {
1062         /* default include paths */
1063         /* -isystem paths have already been handled */
1064         tcc_add_sysinclude_path(s, CONFIG_TCC_SYSINCLUDEPATHS);
1065     }
1066
1067 #ifdef CONFIG_TCC_BCHECK
1068     if (s->do_bounds_check) {
1069         /* if bound checking, then add corresponding sections */
1070         tccelf_bounds_new(s);
1071         /* define symbol */
1072         tcc_define_symbol(s, "__BOUNDS_CHECKING_ON", NULL);
1073     }
1074 #endif
1075     if (s->do_debug) {
1076         /* add debug sections */
1077         tccelf_stab_new(s);
1078     }
1079
1080     tcc_add_library_path(s, CONFIG_TCC_LIBPATHS);
1081
1082 #ifdef TCC_TARGET_PE
1083 # ifdef _WIN32
1084     if (!s->nostdlib && output_type != TCC_OUTPUT_OBJ)
1085         tcc_add_systemdir(s);
1086 # endif
1087 #else
1088     /* paths for crt objects */
1089     tcc_split_path(s, &s->crt_paths, &s->nb_crt_paths, CONFIG_TCC_CRTPREFIX);
1090     /* add libc crt1/crti objects */
1091     if ((output_type == TCC_OUTPUT_EXE || output_type == TCC_OUTPUT_DLL) &&
1092         !s->nostdlib) {
1093 #ifndef TCC_TARGET_MACHO
1094         /* Mach-O with LC_MAIN doesn't need any crt startup code.  */
1095         if (output_type != TCC_OUTPUT_DLL)
1096             tcc_add_crt(s, "crt1.o");
1097         tcc_add_crt(s, "crti.o");
1098 #endif
1099     }
1100 #endif
1101     return 0;
1102 }
1103
1104 LIBTCCAPI int tcc_add_include_path(TCCState *s, const char *pathname)
1105 {
1106     tcc_split_path(s, &s->include_paths, &s->nb_include_paths, pathname);
1107     return 0;
1108 }
1109
1110 LIBTCCAPI int tcc_add_sysinclude_path(TCCState *s, const char *pathname)
1111 {
1112     tcc_split_path(s, &s->sysinclude_paths, &s->nb_sysinclude_paths, pathname);
1113     return 0;
1114 }
1115
1116 ST_FUNC int tcc_add_file_internal(TCCState *s1, const char *filename, int flags)
1117 {
1118     int fd, ret;
1119
1120     /* open the file */
1121     fd = _tcc_open(s1, filename);
1122     if (fd < 0) {
1123         if (flags & AFF_PRINT_ERROR)
1124             tcc_error_noabort("file '%s' not found", filename);
1125         return -1;
1126     }
1127
1128     s1->current_filename = filename;
1129     if (flags & AFF_TYPE_BIN) {
1130         ElfW(Ehdr) ehdr;
1131         int obj_type;
1132
1133         obj_type = tcc_object_type(fd, &ehdr);
1134         lseek(fd, 0, SEEK_SET);
1135
1136 #ifdef TCC_TARGET_MACHO
1137         if (0 == obj_type && 0 == strcmp(tcc_fileextension(filename), ".dylib"))
1138             obj_type = AFF_BINTYPE_DYN;
1139 #endif
1140
1141         switch (obj_type) {
1142         case AFF_BINTYPE_REL:
1143             ret = tcc_load_object_file(s1, fd, 0);
1144             break;
1145 #ifndef TCC_TARGET_PE
1146         case AFF_BINTYPE_DYN:
1147             if (s1->output_type == TCC_OUTPUT_MEMORY) {
1148                 ret = 0;
1149 #ifdef TCC_IS_NATIVE
1150                 if (NULL == dlopen(filename, RTLD_GLOBAL | RTLD_LAZY))
1151                     ret = -1;
1152 #endif
1153             } else {
1154 #ifndef TCC_TARGET_MACHO
1155                 ret = tcc_load_dll(s1, fd, filename,
1156                                    (flags & AFF_REFERENCED_DLL) != 0);
1157 #else
1158                 ret = macho_load_dll(s1, fd, filename,
1159                                      (flags & AFF_REFERENCED_DLL) != 0);
1160 #endif
1161             }
1162             break;
1163 #endif
1164         case AFF_BINTYPE_AR:
1165             ret = tcc_load_archive(s1, fd, !(flags & AFF_WHOLE_ARCHIVE));
1166             break;
1167 #ifdef TCC_TARGET_COFF
1168         case AFF_BINTYPE_C67:
1169             ret = tcc_load_coff(s1, fd);
1170             break;
1171 #endif
1172         default:
1173 #ifdef TCC_TARGET_PE
1174             ret = pe_load_file(s1, filename, fd);
1175 #elif defined(TCC_TARGET_MACHO)
1176             ret = -1;
1177 #else
1178             /* as GNU ld, consider it is an ld script if not recognized */
1179             ret = tcc_load_ldscript(s1, fd);
1180 #endif
1181             if (ret < 0)
1182                 tcc_error_noabort("%s: unrecognized file type %d", filename,
1183                                   obj_type);
1184             break;
1185         }
1186         close(fd);
1187     } else {
1188         /* update target deps */
1189         dynarray_add(&s1->target_deps, &s1->nb_target_deps, tcc_strdup(filename));
1190         ret = tcc_compile(s1, flags, filename, fd);
1191     }
1192     s1->current_filename = NULL;
1193     return ret;
1194 }
1195
1196 LIBTCCAPI int tcc_add_file(TCCState *s, const char *filename)
1197 {
1198     int filetype = s->filetype;
1199     if (0 == (filetype & AFF_TYPE_MASK)) {
1200         /* use a file extension to detect a filetype */
1201         const char *ext = tcc_fileextension(filename);
1202         if (ext[0]) {
1203             ext++;
1204             if (!strcmp(ext, "S"))
1205                 filetype = AFF_TYPE_ASMPP;
1206             else if (!strcmp(ext, "s"))
1207                 filetype = AFF_TYPE_ASM;
1208             else if (!PATHCMP(ext, "c") || !PATHCMP(ext, "i"))
1209                 filetype = AFF_TYPE_C;
1210             else
1211                 filetype |= AFF_TYPE_BIN;
1212         } else {
1213             filetype = AFF_TYPE_C;
1214         }
1215     }
1216     return tcc_add_file_internal(s, filename, filetype | AFF_PRINT_ERROR);
1217 }
1218
1219 LIBTCCAPI int tcc_add_library_path(TCCState *s, const char *pathname)
1220 {
1221     tcc_split_path(s, &s->library_paths, &s->nb_library_paths, pathname);
1222     return 0;
1223 }
1224
1225 static int tcc_add_library_internal(TCCState *s, const char *fmt,
1226     const char *filename, int flags, char **paths, int nb_paths)
1227 {
1228     char buf[1024];
1229     int i;
1230
1231     for(i = 0; i < nb_paths; i++) {
1232         snprintf(buf, sizeof(buf), fmt, paths[i], filename);
1233         if (tcc_add_file_internal(s, buf, flags | AFF_TYPE_BIN) == 0)
1234             return 0;
1235     }
1236     return -1;
1237 }
1238
1239 #ifndef TCC_TARGET_MACHO
1240 /* find and load a dll. Return non zero if not found */
1241 /* XXX: add '-rpath' option support ? */
1242 ST_FUNC int tcc_add_dll(TCCState *s, const char *filename, int flags)
1243 {
1244     return tcc_add_library_internal(s, "%s/%s", filename, flags,
1245         s->library_paths, s->nb_library_paths);
1246 }
1247 #endif
1248
1249 #if !defined TCC_TARGET_PE && !defined TCC_TARGET_MACHO
1250 ST_FUNC int tcc_add_crt(TCCState *s1, const char *filename)
1251 {
1252     if (-1 == tcc_add_library_internal(s1, "%s/%s",
1253         filename, 0, s1->crt_paths, s1->nb_crt_paths))
1254         tcc_error_noabort("file '%s' not found", filename);
1255     return 0;
1256 }
1257 #endif
1258
1259 /* the library name is the same as the argument of the '-l' option */
1260 LIBTCCAPI int tcc_add_library(TCCState *s, const char *libraryname)
1261 {
1262 #if defined TCC_TARGET_PE
1263     const char *libs[] = { "%s/%s.def", "%s/lib%s.def", "%s/%s.dll", "%s/lib%s.dll", "%s/lib%s.a", NULL };
1264     const char **pp = s->static_link ? libs + 4 : libs;
1265 #elif defined TCC_TARGET_MACHO
1266     const char *libs[] = { "%s/lib%s.dylib", "%s/lib%s.a", NULL };
1267     const char **pp = s->static_link ? libs + 1 : libs;
1268 #else
1269     const char *libs[] = { "%s/lib%s.so", "%s/lib%s.a", NULL };
1270     const char **pp = s->static_link ? libs + 1 : libs;
1271 #endif
1272     int flags = s->filetype & AFF_WHOLE_ARCHIVE;
1273     while (*pp) {
1274         if (0 == tcc_add_library_internal(s, *pp,
1275             libraryname, flags, s->library_paths, s->nb_library_paths))
1276             return 0;
1277         ++pp;
1278     }
1279     return -1;
1280 }
1281
1282 PUB_FUNC int tcc_add_library_err(TCCState *s1, const char *libname)
1283 {
1284     int ret = tcc_add_library(s1, libname);
1285     if (ret < 0)
1286         tcc_error_noabort("library '%s' not found", libname);
1287     return ret;
1288 }
1289
1290 /* handle #pragma comment(lib,) */
1291 ST_FUNC void tcc_add_pragma_libs(TCCState *s1)
1292 {
1293     int i;
1294     for (i = 0; i < s1->nb_pragma_libs; i++)
1295         tcc_add_library_err(s1, s1->pragma_libs[i]);
1296 }
1297
1298 LIBTCCAPI int tcc_add_symbol(TCCState *s1, const char *name, const void *val)
1299 {
1300 #ifdef TCC_TARGET_PE
1301     /* On x86_64 'val' might not be reachable with a 32bit offset.
1302        So it is handled here as if it were in a DLL. */
1303     pe_putimport(s1, 0, name, (uintptr_t)val);
1304 #else
1305     char buf[256];
1306     if (s1->leading_underscore) {
1307         buf[0] = '_';
1308         pstrcpy(buf + 1, sizeof(buf) - 1, name);
1309         name = buf;
1310     }
1311     set_global_sym(s1, name, NULL, (addr_t)(uintptr_t)val); /* NULL: SHN_ABS */
1312 #endif
1313     return 0;
1314 }
1315
1316 LIBTCCAPI void tcc_set_lib_path(TCCState *s, const char *path)
1317 {
1318     tcc_free(s->tcc_lib_path);
1319     s->tcc_lib_path = tcc_strdup(path);
1320 }
1321
1322 #define WD_ALL    0x0001 /* warning is activated when using -Wall */
1323 #define FD_INVERT 0x0002 /* invert value before storing */
1324
1325 typedef struct FlagDef {
1326     uint16_t offset;
1327     uint16_t flags;
1328     const char *name;
1329 } FlagDef;
1330
1331 static int no_flag(const char **pp)
1332 {
1333     const char *p = *pp;
1334     if (*p != 'n' || *++p != 'o' || *++p != '-')
1335         return 0;
1336     *pp = p + 1;
1337     return 1;
1338 }
1339
1340 ST_FUNC int set_flag(TCCState *s, const FlagDef *flags, const char *name)
1341 {
1342     int value, ret;
1343     const FlagDef *p;
1344     const char *r;
1345
1346     value = 1;
1347     r = name;
1348     if (no_flag(&r))
1349         value = 0;
1350
1351     for (ret = -1, p = flags; p->name; ++p) {
1352         if (ret) {
1353             if (strcmp(r, p->name))
1354                 continue;
1355         } else {
1356             if (0 == (p->flags & WD_ALL))
1357                 continue;
1358         }
1359         if (p->offset) {
1360             *((unsigned char *)s + p->offset) =
1361                 p->flags & FD_INVERT ? !value : value;
1362             if (ret)
1363                 return 0;
1364         } else {
1365             ret = 0;
1366         }
1367     }
1368     return ret;
1369 }
1370
1371 static int strstart(const char *val, const char **str)
1372 {
1373     const char *p, *q;
1374     p = *str;
1375     q = val;
1376     while (*q) {
1377         if (*p != *q)
1378             return 0;
1379         p++;
1380         q++;
1381     }
1382     *str = p;
1383     return 1;
1384 }
1385
1386 /* Like strstart, but automatically takes into account that ld options can
1387  *
1388  * - start with double or single dash (e.g. '--soname' or '-soname')
1389  * - arguments can be given as separate or after '=' (e.g. '-Wl,-soname,x.so'
1390  *   or '-Wl,-soname=x.so')
1391  *
1392  * you provide `val` always in 'option[=]' form (no leading -)
1393  */
1394 static int link_option(const char *str, const char *val, const char **ptr)
1395 {
1396     const char *p, *q;
1397     int ret;
1398
1399     /* there should be 1 or 2 dashes */
1400     if (*str++ != '-')
1401         return 0;
1402     if (*str == '-')
1403         str++;
1404
1405     /* then str & val should match (potentially up to '=') */
1406     p = str;
1407     q = val;
1408
1409     ret = 1;
1410     if (q[0] == '?') {
1411         ++q;
1412         if (no_flag(&p))
1413             ret = -1;
1414     }
1415
1416     while (*q != '\0' && *q != '=') {
1417         if (*p != *q)
1418             return 0;
1419         p++;
1420         q++;
1421     }
1422
1423     /* '=' near eos means ',' or '=' is ok */
1424     if (*q == '=') {
1425         if (*p == 0)
1426             *ptr = p;
1427         if (*p != ',' && *p != '=')
1428             return 0;
1429         p++;
1430     } else if (*p) {
1431         return 0;
1432     }
1433     *ptr = p;
1434     return ret;
1435 }
1436
1437 static const char *skip_linker_arg(const char **str)
1438 {
1439     const char *s1 = *str;
1440     const char *s2 = strchr(s1, ',');
1441     *str = s2 ? s2++ : (s2 = s1 + strlen(s1));
1442     return s2;
1443 }
1444
1445 static void copy_linker_arg(char **pp, const char *s, int sep)
1446 {
1447     const char *q = s;
1448     char *p = *pp;
1449     int l = 0;
1450     if (p && sep)
1451         p[l = strlen(p)] = sep, ++l;
1452     skip_linker_arg(&q);
1453     pstrncpy(l + (*pp = tcc_realloc(p, q - s + l + 1)), s, q - s);
1454 }
1455
1456 /* set linker options */
1457 static int tcc_set_linker(TCCState *s, const char *option)
1458 {
1459     TCCState *s1 = s;
1460     while (*option) {
1461
1462         const char *p = NULL;
1463         char *end = NULL;
1464         int ignoring = 0;
1465         int ret;
1466
1467         if (link_option(option, "Bsymbolic", &p)) {
1468             s->symbolic = 1;
1469         } else if (link_option(option, "nostdlib", &p)) {
1470             s->nostdlib = 1;
1471         } else if (link_option(option, "fini=", &p)) {
1472             copy_linker_arg(&s->fini_symbol, p, 0);
1473             ignoring = 1;
1474         } else if (link_option(option, "image-base=", &p)
1475                 || link_option(option, "Ttext=", &p)) {
1476             s->text_addr = strtoull(p, &end, 16);
1477             s->has_text_addr = 1;
1478         } else if (link_option(option, "init=", &p)) {
1479             copy_linker_arg(&s->init_symbol, p, 0);
1480             ignoring = 1;
1481         } else if (link_option(option, "oformat=", &p)) {
1482 #if defined(TCC_TARGET_PE)
1483             if (strstart("pe-", &p)) {
1484 #elif PTR_SIZE == 8
1485             if (strstart("elf64-", &p)) {
1486 #else
1487             if (strstart("elf32-", &p)) {
1488 #endif
1489                 s->output_format = TCC_OUTPUT_FORMAT_ELF;
1490             } else if (!strcmp(p, "binary")) {
1491                 s->output_format = TCC_OUTPUT_FORMAT_BINARY;
1492 #ifdef TCC_TARGET_COFF
1493             } else if (!strcmp(p, "coff")) {
1494                 s->output_format = TCC_OUTPUT_FORMAT_COFF;
1495 #endif
1496             } else
1497                 goto err;
1498
1499         } else if (link_option(option, "as-needed", &p)) {
1500             ignoring = 1;
1501         } else if (link_option(option, "O", &p)) {
1502             ignoring = 1;
1503         } else if (link_option(option, "export-all-symbols", &p)) {
1504             s->rdynamic = 1;
1505         } else if (link_option(option, "export-dynamic", &p)) {
1506             s->rdynamic = 1;
1507         } else if (link_option(option, "rpath=", &p)) {
1508             copy_linker_arg(&s->rpath, p, ':');
1509         } else if (link_option(option, "enable-new-dtags", &p)) {
1510             s->enable_new_dtags = 1;
1511         } else if (link_option(option, "section-alignment=", &p)) {
1512             s->section_align = strtoul(p, &end, 16);
1513         } else if (link_option(option, "soname=", &p)) {
1514             copy_linker_arg(&s->soname, p, 0);
1515 #ifdef TCC_TARGET_PE
1516         } else if (link_option(option, "large-address-aware", &p)) {
1517             s->pe_characteristics |= 0x20;
1518         } else if (link_option(option, "file-alignment=", &p)) {
1519             s->pe_file_align = strtoul(p, &end, 16);
1520         } else if (link_option(option, "stack=", &p)) {
1521             s->pe_stack_size = strtoul(p, &end, 10);
1522         } else if (link_option(option, "subsystem=", &p)) {
1523 #if defined(TCC_TARGET_I386) || defined(TCC_TARGET_X86_64)
1524             if (!strcmp(p, "native")) {
1525                 s->pe_subsystem = 1;
1526             } else if (!strcmp(p, "console")) {
1527                 s->pe_subsystem = 3;
1528             } else if (!strcmp(p, "gui") || !strcmp(p, "windows")) {
1529                 s->pe_subsystem = 2;
1530             } else if (!strcmp(p, "posix")) {
1531                 s->pe_subsystem = 7;
1532             } else if (!strcmp(p, "efiapp")) {
1533                 s->pe_subsystem = 10;
1534             } else if (!strcmp(p, "efiboot")) {
1535                 s->pe_subsystem = 11;
1536             } else if (!strcmp(p, "efiruntime")) {
1537                 s->pe_subsystem = 12;
1538             } else if (!strcmp(p, "efirom")) {
1539                 s->pe_subsystem = 13;
1540 #elif defined(TCC_TARGET_ARM)
1541             if (!strcmp(p, "wince")) {
1542                 s->pe_subsystem = 9;
1543 #endif
1544             } else
1545                 goto err;
1546 #endif
1547         } else if (ret = link_option(option, "?whole-archive", &p), ret) {
1548             if (ret > 0)
1549                 s->filetype |= AFF_WHOLE_ARCHIVE;
1550             else
1551                 s->filetype &= ~AFF_WHOLE_ARCHIVE;
1552         } else if (p) {
1553             return 0;
1554         } else {
1555     err:
1556             tcc_error("unsupported linker option '%s'", option);
1557         }
1558
1559         if (ignoring && s->warn_unsupported)
1560             tcc_warning("unsupported linker option '%s'", option);
1561
1562         option = skip_linker_arg(&p);
1563     }
1564     return 1;
1565 }
1566
1567 typedef struct TCCOption {
1568     const char *name;
1569     uint16_t index;
1570     uint16_t flags;
1571 } TCCOption;
1572
1573 enum {
1574     TCC_OPTION_HELP,
1575     TCC_OPTION_HELP2,
1576     TCC_OPTION_v,
1577     TCC_OPTION_I,
1578     TCC_OPTION_D,
1579     TCC_OPTION_U,
1580     TCC_OPTION_P,
1581     TCC_OPTION_L,
1582     TCC_OPTION_B,
1583     TCC_OPTION_l,
1584     TCC_OPTION_bench,
1585     TCC_OPTION_bt,
1586     TCC_OPTION_b,
1587     TCC_OPTION_ba,
1588     TCC_OPTION_g,
1589     TCC_OPTION_c,
1590     TCC_OPTION_dumpversion,
1591     TCC_OPTION_d,
1592     TCC_OPTION_static,
1593     TCC_OPTION_std,
1594     TCC_OPTION_shared,
1595     TCC_OPTION_soname,
1596     TCC_OPTION_o,
1597     TCC_OPTION_r,
1598     TCC_OPTION_s,
1599     TCC_OPTION_traditional,
1600     TCC_OPTION_Wl,
1601     TCC_OPTION_Wp,
1602     TCC_OPTION_W,
1603     TCC_OPTION_O,
1604     TCC_OPTION_mfloat_abi,
1605     TCC_OPTION_m,
1606     TCC_OPTION_f,
1607     TCC_OPTION_isystem,
1608     TCC_OPTION_iwithprefix,
1609     TCC_OPTION_include,
1610     TCC_OPTION_nostdinc,
1611     TCC_OPTION_nostdlib,
1612     TCC_OPTION_print_search_dirs,
1613     TCC_OPTION_rdynamic,
1614     TCC_OPTION_param,
1615     TCC_OPTION_pedantic,
1616     TCC_OPTION_pthread,
1617     TCC_OPTION_run,
1618     TCC_OPTION_w,
1619     TCC_OPTION_pipe,
1620     TCC_OPTION_E,
1621     TCC_OPTION_MD,
1622     TCC_OPTION_MF,
1623     TCC_OPTION_x,
1624     TCC_OPTION_ar,
1625     TCC_OPTION_impdef,
1626     TCC_OPTION_C
1627 };
1628
1629 #define TCC_OPTION_HAS_ARG 0x0001
1630 #define TCC_OPTION_NOSEP   0x0002 /* cannot have space before option and arg */
1631
1632 static const TCCOption tcc_options[] = {
1633     { "h", TCC_OPTION_HELP, 0 },
1634     { "-help", TCC_OPTION_HELP, 0 },
1635     { "?", TCC_OPTION_HELP, 0 },
1636     { "hh", TCC_OPTION_HELP2, 0 },
1637     { "v", TCC_OPTION_v, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1638     { "-version", TCC_OPTION_v, 0 }, /* handle as verbose, also prints version*/
1639     { "I", TCC_OPTION_I, TCC_OPTION_HAS_ARG },
1640     { "D", TCC_OPTION_D, TCC_OPTION_HAS_ARG },
1641     { "U", TCC_OPTION_U, TCC_OPTION_HAS_ARG },
1642     { "P", TCC_OPTION_P, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1643     { "L", TCC_OPTION_L, TCC_OPTION_HAS_ARG },
1644     { "B", TCC_OPTION_B, TCC_OPTION_HAS_ARG },
1645     { "l", TCC_OPTION_l, TCC_OPTION_HAS_ARG },
1646     { "bench", TCC_OPTION_bench, 0 },
1647 #ifdef CONFIG_TCC_BACKTRACE
1648     { "bt", TCC_OPTION_bt, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1649 #endif
1650 #ifdef CONFIG_TCC_BCHECK
1651     { "b", TCC_OPTION_b, 0 },
1652 #endif
1653     { "g", TCC_OPTION_g, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1654     { "c", TCC_OPTION_c, 0 },
1655     { "dumpversion", TCC_OPTION_dumpversion, 0},
1656     { "d", TCC_OPTION_d, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1657     { "static", TCC_OPTION_static, 0 },
1658     { "std", TCC_OPTION_std, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1659     { "shared", TCC_OPTION_shared, 0 },
1660     { "soname", TCC_OPTION_soname, TCC_OPTION_HAS_ARG },
1661     { "o", TCC_OPTION_o, TCC_OPTION_HAS_ARG },
1662     { "-param", TCC_OPTION_param, TCC_OPTION_HAS_ARG },
1663     { "pedantic", TCC_OPTION_pedantic, 0},
1664     { "pthread", TCC_OPTION_pthread, 0},
1665     { "run", TCC_OPTION_run, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1666     { "rdynamic", TCC_OPTION_rdynamic, 0 },
1667     { "r", TCC_OPTION_r, 0 },
1668     { "s", TCC_OPTION_s, 0 },
1669     { "traditional", TCC_OPTION_traditional, 0 },
1670     { "Wl,", TCC_OPTION_Wl, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1671     { "Wp,", TCC_OPTION_Wp, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1672     { "W", TCC_OPTION_W, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1673     { "O", TCC_OPTION_O, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1674 #ifdef TCC_TARGET_ARM
1675     { "mfloat-abi", TCC_OPTION_mfloat_abi, TCC_OPTION_HAS_ARG },
1676 #endif
1677     { "m", TCC_OPTION_m, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1678     { "f", TCC_OPTION_f, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1679     { "isystem", TCC_OPTION_isystem, TCC_OPTION_HAS_ARG },
1680     { "include", TCC_OPTION_include, TCC_OPTION_HAS_ARG },
1681     { "nostdinc", TCC_OPTION_nostdinc, 0 },
1682     { "nostdlib", TCC_OPTION_nostdlib, 0 },
1683     { "print-search-dirs", TCC_OPTION_print_search_dirs, 0 },
1684     { "w", TCC_OPTION_w, 0 },
1685     { "pipe", TCC_OPTION_pipe, 0},
1686     { "E", TCC_OPTION_E, 0},
1687     { "MD", TCC_OPTION_MD, 0},
1688     { "MF", TCC_OPTION_MF, TCC_OPTION_HAS_ARG },
1689     { "x", TCC_OPTION_x, TCC_OPTION_HAS_ARG },
1690     { "ar", TCC_OPTION_ar, 0},
1691 #ifdef TCC_TARGET_PE
1692     { "impdef", TCC_OPTION_impdef, 0},
1693 #endif
1694     { "C", TCC_OPTION_C, 0},
1695     { NULL, 0, 0 },
1696 };
1697
1698 static const FlagDef options_W[] = {
1699     { 0, 0, "all" },
1700     { offsetof(TCCState, warn_unsupported), 0, "unsupported" },
1701     { offsetof(TCCState, warn_write_strings), 0, "write-strings" },
1702     { offsetof(TCCState, warn_error), 0, "error" },
1703     { offsetof(TCCState, warn_gcc_compat), 0, "gcc-compat" },
1704     { offsetof(TCCState, warn_implicit_function_declaration), WD_ALL,
1705       "implicit-function-declaration" },
1706     { 0, 0, NULL }
1707 };
1708
1709 static const FlagDef options_f[] = {
1710     { offsetof(TCCState, char_is_unsigned), 0, "unsigned-char" },
1711     { offsetof(TCCState, char_is_unsigned), FD_INVERT, "signed-char" },
1712     { offsetof(TCCState, nocommon), FD_INVERT, "common" },
1713     { offsetof(TCCState, leading_underscore), 0, "leading-underscore" },
1714     { offsetof(TCCState, ms_extensions), 0, "ms-extensions" },
1715     { offsetof(TCCState, dollars_in_identifiers), 0, "dollars-in-identifiers" },
1716     { 0, 0, NULL }
1717 };
1718
1719 static const FlagDef options_m[] = {
1720     { offsetof(TCCState, ms_bitfields), 0, "ms-bitfields" },
1721 #ifdef TCC_TARGET_X86_64
1722     { offsetof(TCCState, nosse), FD_INVERT, "sse" },
1723 #endif
1724     { 0, 0, NULL }
1725 };
1726
1727 static void args_parser_add_file(TCCState *s, const char* filename, int filetype)
1728 {
1729     struct filespec *f = tcc_malloc(sizeof *f + strlen(filename));
1730     f->type = filetype;
1731     strcpy(f->name, filename);
1732     dynarray_add(&s->files, &s->nb_files, f);
1733 }
1734
1735 static int args_parser_make_argv(const char *r, int *argc, char ***argv)
1736 {
1737     int ret = 0, q, c;
1738     CString str;
1739     for(;;) {
1740         while (c = (unsigned char)*r, c && c <= ' ')
1741           ++r;
1742         if (c == 0)
1743             break;
1744         q = 0;
1745         cstr_new(&str);
1746         while (c = (unsigned char)*r, c) {
1747             ++r;
1748             if (c == '\\' && (*r == '"' || *r == '\\')) {
1749                 c = *r++;
1750             } else if (c == '"') {
1751                 q = !q;
1752                 continue;
1753             } else if (q == 0 && c <= ' ') {
1754                 break;
1755             }
1756             cstr_ccat(&str, c);
1757         }
1758         cstr_ccat(&str, 0);
1759         //printf("<%s>\n", str.data), fflush(stdout);
1760         dynarray_add(argv, argc, tcc_strdup(str.data));
1761         cstr_free(&str);
1762         ++ret;
1763     }
1764     return ret;
1765 }
1766
1767 /* read list file */
1768 static void args_parser_listfile(TCCState *s,
1769     const char *filename, int optind, int *pargc, char ***pargv)
1770 {
1771     TCCState *s1 = s;
1772     int fd, i;
1773     size_t len;
1774     char *p;
1775     int argc = 0;
1776     char **argv = NULL;
1777
1778     fd = open(filename, O_RDONLY | O_BINARY);
1779     if (fd < 0)
1780         tcc_error("listfile '%s' not found", filename);
1781
1782     len = lseek(fd, 0, SEEK_END);
1783     p = tcc_malloc(len + 1), p[len] = 0;
1784     lseek(fd, 0, SEEK_SET), read(fd, p, len), close(fd);
1785
1786     for (i = 0; i < *pargc; ++i)
1787         if (i == optind)
1788             args_parser_make_argv(p, &argc, &argv);
1789         else
1790             dynarray_add(&argv, &argc, tcc_strdup((*pargv)[i]));
1791
1792     tcc_free(p);
1793     dynarray_reset(&s->argv, &s->argc);
1794     *pargc = s->argc = argc, *pargv = s->argv = argv;
1795 }
1796
1797 PUB_FUNC int tcc_parse_args(TCCState *s, int *pargc, char ***pargv, int optind)
1798 {
1799     TCCState *s1 = s;
1800     const TCCOption *popt;
1801     const char *optarg, *r;
1802     const char *run = NULL;
1803     int x;
1804     CString linker_arg; /* collect -Wl options */
1805     int tool = 0, arg_start = 0, noaction = optind;
1806     char **argv = *pargv;
1807     int argc = *pargc;
1808
1809     cstr_new(&linker_arg);
1810
1811     while (optind < argc) {
1812         r = argv[optind];
1813         if (r[0] == '@' && r[1] != '\0') {
1814             args_parser_listfile(s, r + 1, optind, &argc, &argv);
1815             continue;
1816         }
1817         optind++;
1818         if (tool) {
1819             if (r[0] == '-' && r[1] == 'v' && r[2] == 0)
1820                 ++s->verbose;
1821             continue;
1822         }
1823 reparse:
1824         if (r[0] != '-' || r[1] == '\0') {
1825             if (r[0] != '@') /* allow "tcc file(s) -run @ args ..." */
1826                 args_parser_add_file(s, r, s->filetype);
1827             if (run) {
1828                 tcc_set_options(s, run);
1829                 arg_start = optind - 1;
1830                 break;
1831             }
1832             continue;
1833         }
1834
1835         /* find option in table */
1836         for(popt = tcc_options; ; ++popt) {
1837             const char *p1 = popt->name;
1838             const char *r1 = r + 1;
1839             if (p1 == NULL)
1840                 tcc_error("invalid option -- '%s'", r);
1841             if (!strstart(p1, &r1))
1842                 continue;
1843             optarg = r1;
1844             if (popt->flags & TCC_OPTION_HAS_ARG) {
1845                 if (*r1 == '\0' && !(popt->flags & TCC_OPTION_NOSEP)) {
1846                     if (optind >= argc)
1847                 arg_err:
1848                         tcc_error("argument to '%s' is missing", r);
1849                     optarg = argv[optind++];
1850                 }
1851             } else if (*r1 != '\0')
1852                 continue;
1853             break;
1854         }
1855
1856         switch(popt->index) {
1857         case TCC_OPTION_HELP:
1858             x = OPT_HELP;
1859             goto extra_action;
1860         case TCC_OPTION_HELP2:
1861             x = OPT_HELP2;
1862             goto extra_action;
1863         case TCC_OPTION_I:
1864             tcc_add_include_path(s, optarg);
1865             break;
1866         case TCC_OPTION_D:
1867             tcc_define_symbol(s, optarg, NULL);
1868             break;
1869         case TCC_OPTION_U:
1870             tcc_undefine_symbol(s, optarg);
1871             break;
1872         case TCC_OPTION_L:
1873             tcc_add_library_path(s, optarg);
1874             break;
1875         case TCC_OPTION_B:
1876             /* set tcc utilities path (mainly for tcc development) */
1877             tcc_set_lib_path(s, optarg);
1878             break;
1879         case TCC_OPTION_l:
1880             args_parser_add_file(s, optarg, AFF_TYPE_LIB | (s->filetype & ~AFF_TYPE_MASK));
1881             s->nb_libraries++;
1882             break;
1883         case TCC_OPTION_pthread:
1884             s->option_pthread = 1;
1885             break;
1886         case TCC_OPTION_bench:
1887             s->do_bench = 1;
1888             break;
1889 #ifdef CONFIG_TCC_BACKTRACE
1890         case TCC_OPTION_bt:
1891             s->rt_num_callers = atoi(optarg);
1892             s->do_backtrace = 1;
1893             s->do_debug = 1;
1894             break;
1895 #endif
1896 #ifdef CONFIG_TCC_BCHECK
1897         case TCC_OPTION_b:
1898             s->do_bounds_check = 1;
1899             s->do_backtrace = 1;
1900             s->do_debug = 1;
1901             break;
1902 #endif
1903         case TCC_OPTION_g:
1904             s->do_debug = 1;
1905             break;
1906         case TCC_OPTION_c:
1907             x = TCC_OUTPUT_OBJ;
1908         set_output_type:
1909             if (s->output_type)
1910                 tcc_warning("-%s: overriding compiler action already specified", popt->name);
1911             s->output_type = x;
1912             break;
1913         case TCC_OPTION_d:
1914             if (*optarg == 'D')
1915                 s->dflag = 3;
1916             else if (*optarg == 'M')
1917                 s->dflag = 7;
1918             else if (*optarg == 't')
1919                 s->dflag = 16;
1920             else if (isnum(*optarg))
1921                 s->g_debug |= atoi(optarg);
1922             else
1923                 goto unsupported_option;
1924             break;
1925         case TCC_OPTION_static:
1926             s->static_link = 1;
1927             break;
1928         case TCC_OPTION_std:
1929             if (strcmp(optarg, "=c11") == 0)
1930                 s->cversion = 201112;
1931             break;
1932         case TCC_OPTION_shared:
1933             x = TCC_OUTPUT_DLL;
1934             goto set_output_type;
1935         case TCC_OPTION_soname:
1936             s->soname = tcc_strdup(optarg);
1937             break;
1938         case TCC_OPTION_o:
1939             if (s->outfile) {
1940                 tcc_warning("multiple -o option");
1941                 tcc_free(s->outfile);
1942             }
1943             s->outfile = tcc_strdup(optarg);
1944             break;
1945         case TCC_OPTION_r:
1946             /* generate a .o merging several output files */
1947             s->option_r = 1;
1948             x = TCC_OUTPUT_OBJ;
1949             goto set_output_type;
1950         case TCC_OPTION_isystem:
1951             tcc_add_sysinclude_path(s, optarg);
1952             break;
1953         case TCC_OPTION_include:
1954             cstr_printf(&s->cmdline_incl, "#include \"%s\"\n", optarg);
1955             break;
1956         case TCC_OPTION_nostdinc:
1957             s->nostdinc = 1;
1958             break;
1959         case TCC_OPTION_nostdlib:
1960             s->nostdlib = 1;
1961             break;
1962         case TCC_OPTION_run:
1963 #ifndef TCC_IS_NATIVE
1964             tcc_error("-run is not available in a cross compiler");
1965 #endif
1966             run = optarg;
1967             x = TCC_OUTPUT_MEMORY;
1968             goto set_output_type;
1969         case TCC_OPTION_v:
1970             do ++s->verbose; while (*optarg++ == 'v');
1971             ++noaction;
1972             break;
1973         case TCC_OPTION_f:
1974             if (set_flag(s, options_f, optarg) < 0)
1975                 goto unsupported_option;
1976             break;
1977 #ifdef TCC_TARGET_ARM
1978         case TCC_OPTION_mfloat_abi:
1979             /* tcc doesn't support soft float yet */
1980             if (!strcmp(optarg, "softfp")) {
1981                 s->float_abi = ARM_SOFTFP_FLOAT;
1982                 tcc_undefine_symbol(s, "__ARM_PCS_VFP");
1983             } else if (!strcmp(optarg, "hard"))
1984                 s->float_abi = ARM_HARD_FLOAT;
1985             else
1986                 tcc_error("unsupported float abi '%s'", optarg);
1987             break;
1988 #endif
1989         case TCC_OPTION_m:
1990             if (set_flag(s, options_m, optarg) < 0) {
1991                 if (x = atoi(optarg), x != 32 && x != 64)
1992                     goto unsupported_option;
1993                 if (PTR_SIZE != x/8)
1994                     return x;
1995                 ++noaction;
1996             }
1997             break;
1998         case TCC_OPTION_W:
1999             s->warn_none = 0;
2000             if (optarg[0] && set_flag(s, options_W, optarg) < 0)
2001                 goto unsupported_option;
2002             break;
2003         case TCC_OPTION_w:
2004             s->warn_none = 1;
2005             break;
2006         case TCC_OPTION_rdynamic:
2007             s->rdynamic = 1;
2008             break;
2009         case TCC_OPTION_Wl:
2010             if (linker_arg.size)
2011                 --linker_arg.size, cstr_ccat(&linker_arg, ',');
2012             cstr_cat(&linker_arg, optarg, 0);
2013             if (tcc_set_linker(s, linker_arg.data))
2014                 cstr_free(&linker_arg);
2015             break;
2016         case TCC_OPTION_Wp:
2017             r = optarg;
2018             goto reparse;
2019         case TCC_OPTION_E:
2020             x = TCC_OUTPUT_PREPROCESS;
2021             goto set_output_type;
2022         case TCC_OPTION_P:
2023             s->Pflag = atoi(optarg) + 1;
2024             break;
2025         case TCC_OPTION_MD:
2026             s->gen_deps = 1;
2027             break;
2028         case TCC_OPTION_MF:
2029             s->deps_outfile = tcc_strdup(optarg);
2030             break;
2031         case TCC_OPTION_dumpversion:
2032             printf ("%s\n", TCC_VERSION);
2033             exit(0);
2034             break;
2035         case TCC_OPTION_x:
2036             x = 0;
2037             if (*optarg == 'c')
2038                 x = AFF_TYPE_C;
2039             else if (*optarg == 'a')
2040                 x = AFF_TYPE_ASMPP;
2041             else if (*optarg == 'b')
2042                 x = AFF_TYPE_BIN;
2043             else if (*optarg == 'n')
2044                 x = AFF_TYPE_NONE;
2045             else
2046                 tcc_warning("unsupported language '%s'", optarg);
2047             s->filetype = x | (s->filetype & ~AFF_TYPE_MASK);
2048             break;
2049         case TCC_OPTION_O:
2050             s->optimize = atoi(optarg);
2051             break;
2052         case TCC_OPTION_print_search_dirs:
2053             x = OPT_PRINT_DIRS;
2054             goto extra_action;
2055         case TCC_OPTION_impdef:
2056             x = OPT_IMPDEF;
2057             goto extra_action;
2058         case TCC_OPTION_ar:
2059             x = OPT_AR;
2060         extra_action:
2061             arg_start = optind - 1;
2062             if (arg_start != noaction)
2063                 tcc_error("cannot parse %s here", r);
2064             tool = x;
2065             break;
2066         case TCC_OPTION_traditional:
2067         case TCC_OPTION_pedantic:
2068         case TCC_OPTION_pipe:
2069         case TCC_OPTION_s:
2070         case TCC_OPTION_C:
2071             /* ignored */
2072             break;
2073         default:
2074 unsupported_option:
2075             if (s->warn_unsupported)
2076                 tcc_warning("unsupported option '%s'", r);
2077             break;
2078         }
2079     }
2080     if (linker_arg.size) {
2081         r = linker_arg.data;
2082         goto arg_err;
2083     }
2084     *pargc = argc - arg_start;
2085     *pargv = argv + arg_start;
2086     if (tool)
2087         return tool;
2088     if (optind != noaction)
2089         return 0;
2090     if (s->verbose == 2)
2091         return OPT_PRINT_DIRS;
2092     if (s->verbose)
2093         return OPT_V;
2094     return OPT_HELP;
2095 }
2096
2097 LIBTCCAPI void tcc_set_options(TCCState *s, const char *r)
2098 {
2099     char **argv = NULL;
2100     int argc = 0;
2101     args_parser_make_argv(r, &argc, &argv);
2102     tcc_parse_args(s, &argc, &argv, 0);
2103     dynarray_reset(&argv, &argc);
2104 }
2105
2106 PUB_FUNC void tcc_print_stats(TCCState *s1, unsigned total_time)
2107 {
2108     if (total_time < 1)
2109         total_time = 1;
2110     if (total_bytes < 1)
2111         total_bytes = 1;
2112     fprintf(stderr, "* %d idents, %d lines, %d bytes\n"
2113                     "* %0.3f s, %u lines/s, %0.1f MB/s\n",
2114            total_idents, total_lines, total_bytes,
2115            (double)total_time/1000,
2116            (unsigned)total_lines*1000/total_time,
2117            (double)total_bytes/1000/total_time);
2118 #ifdef MEM_DEBUG
2119     fprintf(stderr, "* %d bytes memory used\n", mem_max_size);
2120 #endif
2121 }