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 "tccdbg.c"
  25 #include "tccasm.c"
  26 #include "tccelf.c"
  27 #include "tccrun.c"
  28 #ifdef TCC_TARGET_I386
  29 #include "i386-gen.c"
  30 #include "i386-link.c"
  31 #include "i386-asm.c"
  32 #elif defined(TCC_TARGET_ARM)
  33 #include "arm-gen.c"
  34 #include "arm-link.c"
  35 #include "arm-asm.c"
  36 #elif defined(TCC_TARGET_ARM64)
  37 #include "arm64-gen.c"
  38 #include "arm64-link.c"
  39 #include "arm-asm.c"
  40 #elif defined(TCC_TARGET_C67)
  41 #include "c67-gen.c"
  42 #include "c67-link.c"
  43 #include "tcccoff.c"
  44 #elif defined(TCC_TARGET_X86_64)
  45 #include "x86_64-gen.c"
  46 #include "x86_64-link.c"
  47 #include "i386-asm.c"
  48 #elif defined(TCC_TARGET_RISCV64)
  49 #include "riscv64-gen.c"
  50 #include "riscv64-link.c"
  51 #include "riscv64-asm.c"
  52 #else
  53 #error unknown target
  54 #endif
  55 #ifdef TCC_TARGET_PE
  56 #include "tccpe.c"
  57 #endif
  58 #ifdef TCC_TARGET_MACHO
  59 #include "tccmacho.c"
  60 #endif
  61 #endif /* ONE_SOURCE */
  62
  63 #define TCC_SEM_IMPL 1
  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 TCC_SEM(static tcc_compile_sem);
  72 /* an array of pointers to memory to be free'd after errors */
  73 ST_DATA void** stk_data;
  74 ST_DATA int nb_stk_data;
  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 #if defined LIBTCC_AS_DLL && !defined CONFIG_TCCDIR
  88 static HMODULE tcc_module;
  89 BOOL WINAPI DllMain (HINSTANCE hDll, DWORD dwReason, LPVOID lpReserved)
  90 {
  91     if (DLL_PROCESS_ATTACH == dwReason)
  92         tcc_module = hDll;
  93     return TRUE;
  94 }
  95 #else
  96 #define tcc_module NULL /* NULL means executable itself */
  97 #endif
  98
  99 #ifndef CONFIG_TCCDIR
 100 /* on win32, we suppose the lib and includes are at the location of 'tcc.exe' */
 101 static inline char *config_tccdir_w32(char *path)
 102 {
 103     char *p;
 104     GetModuleFileNameA(tcc_module, path, MAX_PATH);
 105     p = tcc_basename(normalize_slashes(strlwr(path)));
 106     if (p > path)
 107         --p;
 108     *p = 0;
 109     return path;
 110 }
 111 #define CONFIG_TCCDIR config_tccdir_w32(alloca(MAX_PATH))
 112 #endif
 113
 114 #ifdef TCC_IS_NATIVE
 115 static void tcc_add_systemdir(TCCState *s)
 116 {
 117     char buf[1000];
 118     GetSystemDirectoryA(buf, sizeof buf);
 119     tcc_add_library_path(s, normalize_slashes(buf));
 120 }
 121 #endif
 122 #endif
 123
 124 /********************************************************/
 125
 126 PUB_FUNC void tcc_enter_state(TCCState *s1)
 127 {
 128     if (s1->error_set_jmp_enabled)
 129         return;
 130     WAIT_SEM(&tcc_compile_sem);
 131     tcc_state = s1;
 132 }
 133
 134 PUB_FUNC void tcc_exit_state(TCCState *s1)
 135 {
 136     if (s1->error_set_jmp_enabled)
 137         return;
 138     tcc_state = NULL;
 139     POST_SEM(&tcc_compile_sem);
 140 }
 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 ST_FUNC char *tcc_load_text(int fd)
 201 {
 202     int len = lseek(fd, 0, SEEK_END);
 203     char *buf = load_data(fd, 0, len + 1);
 204     if (buf)
 205         buf[len] = 0;
 206     return buf;
 207 }
 208
 209 /********************************************************/
 210 /* memory management */
 211
 212 /* we'll need the actual versions for a minute */
 213 #undef free
 214 #undef realloc
 215
 216 static void *default_reallocator(void *ptr, unsigned long size)
 217 {
 218     void *ptr1;
 219     if (size == 0) {
 220         free(ptr);
 221         ptr1 = NULL;
 222     }
 223     else {
 224         ptr1 = realloc(ptr, size);
 225         if (!ptr1) {
 226             fprintf(stderr, "memory full\n");
 227             exit (1);
 228         }
 229     }
 230     return ptr1;
 231 }
 232
 233 ST_FUNC void libc_free(void *ptr)
 234 {
 235     free(ptr);
 236 }
 237
 238 #define free(p) use_tcc_free(p)
 239 #define realloc(p, s) use_tcc_realloc(p, s)
 240
 241 /* global so that every tcc_alloc()/tcc_free() call doesn't need to be changed */
 242 static void *(*reallocator)(void*, unsigned long) = default_reallocator;
 243
 244 LIBTCCAPI void tcc_set_realloc(TCCReallocFunc *realloc)
 245 {
 246     reallocator = realloc ? realloc : default_reallocator;
 247 }
 248
 249 /* in case MEM_DEBUG is #defined */
 250 #undef tcc_free
 251 #undef tcc_malloc
 252 #undef tcc_realloc
 253 #undef tcc_mallocz
 254 #undef tcc_strdup
 255
 256 PUB_FUNC void tcc_free(void *ptr)
 257 {
 258     reallocator(ptr, 0);
 259 }
 260
 261 PUB_FUNC void *tcc_malloc(unsigned long size)
 262 {
 263     return reallocator(0, size);
 264 }
 265
 266 PUB_FUNC void *tcc_realloc(void *ptr, unsigned long size)
 267 {
 268     return reallocator(ptr, size);
 269 }
 270
 271 PUB_FUNC void *tcc_mallocz(unsigned long size)
 272 {
 273     void *ptr;
 274     ptr = tcc_malloc(size);
 275     if (size)
 276         memset(ptr, 0, size);
 277     return ptr;
 278 }
 279
 280 PUB_FUNC char *tcc_strdup(const char *str)
 281 {
 282     char *ptr;
 283     ptr = tcc_malloc(strlen(str) + 1);
 284     strcpy(ptr, str);
 285     return ptr;
 286 }
 287
 288 #ifdef MEM_DEBUG
 289
 290 #define MEM_DEBUG_MAGIC1 0xFEEDDEB1
 291 #define MEM_DEBUG_MAGIC2 0xFEEDDEB2
 292 #define MEM_DEBUG_MAGIC3 0xFEEDDEB3
 293 #define MEM_DEBUG_FILE_LEN 40
 294 #define MEM_DEBUG_CHECK3(header) \
 295     ((mem_debug_header_t*)((char*)header + header->size))->magic3
 296 #define MEM_USER_PTR(header) \
 297     ((char *)header + offsetof(mem_debug_header_t, magic3))
 298 #define MEM_HEADER_PTR(ptr) \
 299     (mem_debug_header_t *)((char*)ptr - offsetof(mem_debug_header_t, magic3))
 300
 301 struct mem_debug_header {
 302     unsigned magic1;
 303     unsigned size;
 304     struct mem_debug_header *prev;
 305     struct mem_debug_header *next;
 306     int line_num;
 307     char file_name[MEM_DEBUG_FILE_LEN + 1];
 308     unsigned magic2;
 309     ALIGNED(16) unsigned char magic3[4];
 310 };
 311
 312 typedef struct mem_debug_header mem_debug_header_t;
 313
 314 TCC_SEM(static mem_sem);
 315 static mem_debug_header_t *mem_debug_chain;
 316 static unsigned mem_cur_size;
 317 static unsigned mem_max_size;
 318 static int nb_states;
 319
 320 static mem_debug_header_t *malloc_check(void *ptr, const char *msg)
 321 {
 322     mem_debug_header_t * header = MEM_HEADER_PTR(ptr);
 323     if (header->magic1 != MEM_DEBUG_MAGIC1 ||
 324         header->magic2 != MEM_DEBUG_MAGIC2 ||
 325         read32le(MEM_DEBUG_CHECK3(header)) != MEM_DEBUG_MAGIC3 ||
 326         header->size == (unsigned)-1) {
 327         fprintf(stderr, "%s check failed\n", msg);
 328         if (header->magic1 == MEM_DEBUG_MAGIC1)
 329             fprintf(stderr, "%s:%u: block allocated here.\n",
 330                 header->file_name, header->line_num);
 331         exit(1);
 332     }
 333     return header;
 334 }
 335
 336 PUB_FUNC void *tcc_malloc_debug(unsigned long size, const char *file, int line)
 337 {
 338     int ofs;
 339     mem_debug_header_t *header;
 340     if (!size)
 341         return NULL;
 342     header = tcc_malloc(sizeof(mem_debug_header_t) + size);
 343     header->magic1 = MEM_DEBUG_MAGIC1;
 344     header->magic2 = MEM_DEBUG_MAGIC2;
 345     header->size = size;
 346     write32le(MEM_DEBUG_CHECK3(header), MEM_DEBUG_MAGIC3);
 347     header->line_num = line;
 348     ofs = strlen(file) - MEM_DEBUG_FILE_LEN;
 349     strncpy(header->file_name, file + (ofs > 0 ? ofs : 0), MEM_DEBUG_FILE_LEN);
 350     header->file_name[MEM_DEBUG_FILE_LEN] = 0;
 351     WAIT_SEM(&mem_sem);
 352     header->next = mem_debug_chain;
 353     header->prev = NULL;
 354     if (header->next)
 355         header->next->prev = header;
 356     mem_debug_chain = header;
 357     mem_cur_size += size;
 358     if (mem_cur_size > mem_max_size)
 359         mem_max_size = mem_cur_size;
 360     POST_SEM(&mem_sem);
 361     return MEM_USER_PTR(header);
 362 }
 363
 364 PUB_FUNC void tcc_free_debug(void *ptr)
 365 {
 366     mem_debug_header_t *header;
 367     if (!ptr)
 368         return;
 369     header = malloc_check(ptr, "tcc_free");
 370     WAIT_SEM(&mem_sem);
 371     mem_cur_size -= header->size;
 372     header->size = (unsigned)-1;
 373     if (header->next)
 374         header->next->prev = header->prev;
 375     if (header->prev)
 376         header->prev->next = header->next;
 377     if (header == mem_debug_chain)
 378         mem_debug_chain = header->next;
 379     POST_SEM(&mem_sem);
 380     tcc_free(header);
 381 }
 382
 383 PUB_FUNC void *tcc_mallocz_debug(unsigned long size, const char *file, int line)
 384 {
 385     void *ptr;
 386     ptr = tcc_malloc_debug(size,file,line);
 387     if (size)
 388         memset(ptr, 0, size);
 389     return ptr;
 390 }
 391
 392 PUB_FUNC void *tcc_realloc_debug(void *ptr, unsigned long size, const char *file, int line)
 393 {
 394     mem_debug_header_t *header;
 395     int mem_debug_chain_update = 0;
 396
 397     if (!ptr)
 398         return tcc_malloc_debug(size, file, line);
 399     if (!size) {
 400         tcc_free_debug(ptr);
 401         return NULL;
 402     }
 403     header = malloc_check(ptr, "tcc_realloc");
 404     WAIT_SEM(&mem_sem);
 405     mem_cur_size -= header->size;
 406     mem_debug_chain_update = (header == mem_debug_chain);
 407     header = tcc_realloc(header, sizeof(mem_debug_header_t) + size);
 408     header->size = size;
 409     write32le(MEM_DEBUG_CHECK3(header), MEM_DEBUG_MAGIC3);
 410     if (header->next)
 411         header->next->prev = header;
 412     if (header->prev)
 413         header->prev->next = header;
 414     if (mem_debug_chain_update)
 415         mem_debug_chain = header;
 416     mem_cur_size += size;
 417     if (mem_cur_size > mem_max_size)
 418         mem_max_size = mem_cur_size;
 419     POST_SEM(&mem_sem);
 420     return MEM_USER_PTR(header);
 421 }
 422
 423 PUB_FUNC char *tcc_strdup_debug(const char *str, const char *file, int line)
 424 {
 425     char *ptr;
 426     ptr = tcc_malloc_debug(strlen(str) + 1, file, line);
 427     strcpy(ptr, str);
 428     return ptr;
 429 }
 430
 431 PUB_FUNC void tcc_memcheck(int d)
 432 {
 433     WAIT_SEM(&mem_sem);
 434     nb_states += d;
 435     if (0 == nb_states && mem_cur_size) {
 436         mem_debug_header_t *header = mem_debug_chain;
 437         fflush(stdout);
 438         fprintf(stderr, "MEM_DEBUG: mem_leak= %d bytes, mem_max_size= %d bytes\n",
 439             mem_cur_size, mem_max_size);
 440         while (header) {
 441             fprintf(stderr, "%s:%u: error: %u bytes leaked\n",
 442                 header->file_name, header->line_num, header->size);
 443             header = header->next;
 444         }
 445         fflush(stderr);
 446         mem_cur_size = 0;
 447         mem_max_size = 0;
 448         mem_debug_chain = NULL;
 449 #if MEM_DEBUG-0 == 2
 450         exit(2);
 451 #endif
 452     }
 453     POST_SEM(&mem_sem);
 454 }
 455
 456 /* restore the debug versions */
 457 #define tcc_free(ptr)           tcc_free_debug(ptr)
 458 #define tcc_malloc(size)        tcc_malloc_debug(size, __FILE__, __LINE__)
 459 #define tcc_mallocz(size)       tcc_mallocz_debug(size, __FILE__, __LINE__)
 460 #define tcc_realloc(ptr,size)   tcc_realloc_debug(ptr, size, __FILE__, __LINE__)
 461 #define tcc_strdup(str)         tcc_strdup_debug(str, __FILE__, __LINE__)
 462
 463 #endif /* MEM_DEBUG */
 464
 465 #ifdef _WIN32
 466 # define realpath(file, buf) _fullpath(buf, file, 260)
 467 #endif
 468
 469 /* for #pragma once */
 470 ST_FUNC int normalized_PATHCMP(const char *f1, const char *f2)
 471 {
 472     char *p1, *p2;
 473     int ret = 1;
 474     if (!!(p1 = realpath(f1, NULL))) {
 475         if (!!(p2 = realpath(f2, NULL))) {
 476             ret = PATHCMP(p1, p2);
 477             libc_free(p2); /* realpath() requirement */
 478         }
 479         libc_free(p1);
 480     }
 481     return ret;
 482 }
 483
 484 /********************************************************/
 485 /* dynarrays */
 486
 487 ST_FUNC void dynarray_add(void *ptab, int *nb_ptr, void *data)
 488 {
 489     int nb, nb_alloc;
 490     void **pp;
 491
 492     nb = *nb_ptr;
 493     pp = *(void ***)ptab;
 494     /* every power of two we double array size */
 495     if ((nb & (nb - 1)) == 0) {
 496         if (!nb)
 497             nb_alloc = 1;
 498         else
 499             nb_alloc = nb * 2;
 500         pp = tcc_realloc(pp, nb_alloc * sizeof(void *));
 501         *(void***)ptab = pp;
 502     }
 503     pp[nb++] = data;
 504     *nb_ptr = nb;
 505 }
 506
 507 ST_FUNC void dynarray_reset(void *pp, int *n)
 508 {
 509     void **p;
 510     for (p = *(void***)pp; *n; ++p, --*n)
 511         if (*p)
 512             tcc_free(*p);
 513     tcc_free(*(void**)pp);
 514     *(void**)pp = NULL;
 515 }
 516
 517 static void tcc_split_path(TCCState *s, void *p_ary, int *p_nb_ary, const char *in)
 518 {
 519     const char *p;
 520     do {
 521         int c;
 522         CString str;
 523
 524         cstr_new(&str);
 525         for (p = in; c = *p, c != '\0' && c != PATHSEP[0]; ++p) {
 526             if (c == '{' && p[1] && p[2] == '}') {
 527                 c = p[1], p += 2;
 528                 if (c == 'B')
 529                     cstr_cat(&str, s->tcc_lib_path, -1);
 530                 if (c == 'R')
 531                     cstr_cat(&str, CONFIG_SYSROOT, -1);
 532                 if (c == 'f' && file) {
 533                     /* substitute current file's dir */
 534                     const char *f = file->true_filename;
 535                     const char *b = tcc_basename(f);
 536                     if (b > f)
 537                         cstr_cat(&str, f, b - f - 1);
 538                     else
 539                         cstr_cat(&str, ".", 1);
 540                 }
 541             } else {
 542                 cstr_ccat(&str, c);
 543             }
 544         }
 545         if (str.size) {
 546             cstr_ccat(&str, '\0');
 547             dynarray_add(p_ary, p_nb_ary, tcc_strdup(str.data));
 548         }
 549         cstr_free(&str);
 550         in = p+1;
 551     } while (*p);
 552 }
 553
 554 /********************************************************/
 555 /* warning / error */
 556
 557 /* warn_... option bits */
 558 #define WARN_ON  1 /* warning is on (-Woption) */
 559 #define WARN_ERR 2 /* warning is an error (-Werror=option) */
 560 #define WARN_NOE 4 /* warning is not an error (-Wno-error=option) */
 561
 562 /* error1() modes */
 563 enum { ERROR_WARN, ERROR_NOABORT, ERROR_ERROR };
 564
 565 static void error1(int mode, const char *fmt, va_list ap)
 566 {
 567     BufferedFile **pf, *f;
 568     TCCState *s1 = tcc_state;
 569     CString cs;
 570
 571     tcc_exit_state(s1);
 572
 573     if (mode == ERROR_WARN) {
 574         if (s1->warn_error)
 575             mode = ERROR_ERROR;
 576         if (s1->warn_num) {
 577             /* handle tcc_warning_c(warn_option)(fmt, ...) */
 578             int wopt = *(&s1->warn_none + s1->warn_num);
 579             s1->warn_num = 0;
 580             if (0 == (wopt & WARN_ON))
 581                 return;
 582             if (wopt & WARN_ERR)
 583                 mode = ERROR_ERROR;
 584             if (wopt & WARN_NOE)
 585                 mode = ERROR_WARN;
 586         }
 587         if (s1->warn_none)
 588             return;
 589     }
 590
 591     cstr_new(&cs);
 592     f = NULL;
 593     if (s1->error_set_jmp_enabled) { /* we're called while parsing a file */
 594         /* use upper file if inline ":asm:" or token ":paste:" */
 595         for (f = file; f && f->filename[0] == ':'; f = f->prev)
 596             ;
 597     }
 598     if (f) {
 599         for(pf = s1->include_stack; pf < s1->include_stack_ptr; pf++)
 600             cstr_printf(&cs, "In file included from %s:%d:\n",
 601                 (*pf)->filename, (*pf)->line_num - 1);
 602         cstr_printf(&cs, "%s:%d: ",
 603             f->filename, f->line_num - ((tok_flags & TOK_FLAG_BOL) && !macro_ptr));
 604     } else if (s1->current_filename) {
 605         cstr_printf(&cs, "%s: ", s1->current_filename);
 606     } else {
 607         cstr_printf(&cs, "tcc: ");
 608     }
 609     cstr_printf(&cs, mode == ERROR_WARN ? "warning: " : "error: ");
 610     if (pp_expr > 1)
 611         pp_error(&cs); /* special handler for preprocessor expression errors */
 612     else
 613         cstr_vprintf(&cs, fmt, ap);
 614     if (!s1->error_func) {
 615         /* default case: stderr */
 616         if (s1 && s1->output_type == TCC_OUTPUT_PREPROCESS && s1->ppfp == stdout)
 617             printf("\n"); /* print a newline during tcc -E */
 618         fflush(stdout); /* flush -v output */
 619         fprintf(stderr, "%s\n", (char*)cs.data);
 620         fflush(stderr); /* print error/warning now (win32) */
 621     } else {
 622         s1->error_func(s1->error_opaque, (char*)cs.data);
 623     }
 624     cstr_free(&cs);
 625     if (mode != ERROR_WARN)
 626         s1->nb_errors++;
 627     if (mode == ERROR_ERROR && s1->error_set_jmp_enabled) {
 628         while (nb_stk_data)
 629             tcc_free(*(void**)stk_data[--nb_stk_data]);
 630         longjmp(s1->error_jmp_buf, 1);
 631     }
 632 }
 633
 634 LIBTCCAPI void tcc_set_error_func(TCCState *s, void *error_opaque, TCCErrorFunc *error_func)
 635 {
 636     s->error_opaque = error_opaque;
 637     s->error_func = error_func;
 638 }
 639
 640 /* error without aborting current compilation */
 641 PUB_FUNC int _tcc_error_noabort(const char *fmt, ...)
 642 {
 643     va_list ap;
 644     va_start(ap, fmt);
 645     error1(ERROR_NOABORT, fmt, ap);
 646     va_end(ap);
 647     return -1;
 648 }
 649
 650 #undef _tcc_error
 651 PUB_FUNC void _tcc_error(const char *fmt, ...)
 652 {
 653     va_list ap;
 654     va_start(ap, fmt);
 655     error1(ERROR_ERROR, fmt, ap);
 656     exit(1);
 657 }
 658 #define _tcc_error use_tcc_error_noabort
 659
 660 PUB_FUNC void _tcc_warning(const char *fmt, ...)
 661 {
 662     va_list ap;
 663     va_start(ap, fmt);
 664     error1(ERROR_WARN, fmt, ap);
 665     va_end(ap);
 666 }
 667
 668
 669 /********************************************************/
 670 /* I/O layer */
 671
 672 ST_FUNC void tcc_open_bf(TCCState *s1, const char *filename, int initlen)
 673 {
 674     BufferedFile *bf;
 675     int buflen = initlen ? initlen : IO_BUF_SIZE;
 676
 677     bf = tcc_mallocz(sizeof(BufferedFile) + buflen);
 678     bf->buf_ptr = bf->buffer;
 679     bf->buf_end = bf->buffer + initlen;
 680     bf->buf_end[0] = CH_EOB; /* put eob symbol */
 681     pstrcpy(bf->filename, sizeof(bf->filename), filename);
 682 #ifdef _WIN32
 683     normalize_slashes(bf->filename);
 684 #endif
 685     bf->true_filename = bf->filename;
 686     bf->line_num = 1;
 687     bf->ifdef_stack_ptr = s1->ifdef_stack_ptr;
 688     bf->fd = -1;
 689     bf->prev = file;
 690     bf->prev_tok_flags = tok_flags;
 691     file = bf;
 692     tok_flags = TOK_FLAG_BOL | TOK_FLAG_BOF;
 693 }
 694
 695 ST_FUNC void tcc_close(void)
 696 {
 697     TCCState *s1 = tcc_state;
 698     BufferedFile *bf = file;
 699     if (bf->fd > 0) {
 700         close(bf->fd);
 701         total_lines += bf->line_num - 1;
 702     }
 703     if (bf->true_filename != bf->filename)
 704         tcc_free(bf->true_filename);
 705     file = bf->prev;
 706     tok_flags = bf->prev_tok_flags;
 707     tcc_free(bf);
 708 }
 709
 710 static int _tcc_open(TCCState *s1, const char *filename)
 711 {
 712     int fd;
 713     if (strcmp(filename, "-") == 0)
 714         fd = 0, filename = "<stdin>";
 715     else
 716         fd = open(filename, O_RDONLY | O_BINARY);
 717     if ((s1->verbose == 2 && fd >= 0) || s1->verbose == 3)
 718         printf("%s %*s%s\n", fd < 0 ? "nf":"->",
 719                (int)(s1->include_stack_ptr - s1->include_stack), "", filename);
 720     return fd;
 721 }
 722
 723 ST_FUNC int tcc_open(TCCState *s1, const char *filename)
 724 {
 725     int fd = _tcc_open(s1, filename);
 726     if (fd < 0)
 727         return -1;
 728     tcc_open_bf(s1, filename, 0);
 729     file->fd = fd;
 730     return 0;
 731 }
 732
 733 /* compile the file opened in 'file'. Return non zero if errors. */
 734 static int tcc_compile(TCCState *s1, int filetype, const char *str, int fd)
 735 {
 736     /* Here we enter the code section where we use the global variables for
 737        parsing and code generation (tccpp.c, tccgen.c, <target>-gen.c).
 738        Other threads need to wait until we're done.
 739
 740        Alternatively we could use thread local storage for those global
 741        variables, which may or may not have advantages */
 742
 743     tcc_enter_state(s1);
 744     s1->error_set_jmp_enabled = 1;
 745
 746     if (setjmp(s1->error_jmp_buf) == 0) {
 747         s1->nb_errors = 0;
 748
 749         if (fd == -1) {
 750             int len = strlen(str);
 751             tcc_open_bf(s1, "<string>", len);
 752             memcpy(file->buffer, str, len);
 753         } else {
 754             tcc_open_bf(s1, str, 0);
 755             file->fd = fd;
 756         }
 757
 758         preprocess_start(s1, filetype);
 759         tccgen_init(s1);
 760
 761         if (s1->output_type == TCC_OUTPUT_PREPROCESS) {
 762             tcc_preprocess(s1);
 763         } else {
 764             tccelf_begin_file(s1);
 765             if (filetype & (AFF_TYPE_ASM | AFF_TYPE_ASMPP)) {
 766                 tcc_assemble(s1, !!(filetype & AFF_TYPE_ASMPP));
 767             } else {
 768                 tccgen_compile(s1);
 769             }
 770             tccelf_end_file(s1);
 771         }
 772     }
 773     tccgen_finish(s1);
 774     preprocess_end(s1);
 775     s1->error_set_jmp_enabled = 0;
 776     tcc_exit_state(s1);
 777     return s1->nb_errors != 0 ? -1 : 0;
 778 }
 779
 780 LIBTCCAPI int tcc_compile_string(TCCState *s, const char *str)
 781 {
 782     return tcc_compile(s, s->filetype, str, -1);
 783 }
 784
 785 /* define a preprocessor symbol. value can be NULL, sym can be "sym=val" */
 786 LIBTCCAPI void tcc_define_symbol(TCCState *s1, const char *sym, const char *value)
 787 {
 788     const char *eq;
 789     if (NULL == (eq = strchr(sym, '=')))
 790         eq = strchr(sym, 0);
 791     if (NULL == value)
 792         value = *eq ? eq + 1 : "1";
 793     cstr_printf(&s1->cmdline_defs, "#define %.*s %s\n", (int)(eq-sym), sym, value);
 794 }
 795
 796 /* undefine a preprocessor symbol */
 797 LIBTCCAPI void tcc_undefine_symbol(TCCState *s1, const char *sym)
 798 {
 799     cstr_printf(&s1->cmdline_defs, "#undef %s\n", sym);
 800 }
 801
 802
 803 LIBTCCAPI TCCState *tcc_new(void)
 804 {
 805     TCCState *s;
 806
 807     s = tcc_mallocz(sizeof(TCCState));
 808 #ifdef MEM_DEBUG
 809     tcc_memcheck(1);
 810 #endif
 811
 812 #undef gnu_ext
 813     s->gnu_ext = 1;
 814     s->tcc_ext = 1;
 815     s->nocommon = 1;
 816     s->dollars_in_identifiers = 1; /*on by default like in gcc/clang*/
 817     s->cversion = 199901; /* default unless -std=c11 is supplied */
 818     s->warn_implicit_function_declaration = 1;
 819     s->warn_discarded_qualifiers = 1;
 820     s->ms_extensions = 1;
 821
 822 #ifdef CHAR_IS_UNSIGNED
 823     s->char_is_unsigned = 1;
 824 #endif
 825 #ifdef TCC_TARGET_I386
 826     s->seg_size = 32;
 827 #endif
 828     /* enable this if you want symbols with leading underscore on windows: */
 829 #if defined TCC_TARGET_MACHO /* || defined TCC_TARGET_PE */
 830     s->leading_underscore = 1;
 831 #endif
 832 #ifdef TCC_TARGET_ARM
 833     s->float_abi = ARM_FLOAT_ABI;
 834 #endif
 835 #ifdef CONFIG_NEW_DTAGS
 836     s->enable_new_dtags = 1;
 837 #endif
 838     s->ppfp = stdout;
 839     /* might be used in error() before preprocess_start() */
 840     s->include_stack_ptr = s->include_stack;
 841
 842     tcc_set_lib_path(s, CONFIG_TCCDIR);
 843     return s;
 844 }
 845
 846 LIBTCCAPI void tcc_delete(TCCState *s1)
 847 {
 848     /* free sections */
 849     tccelf_delete(s1);
 850
 851     /* free library paths */
 852     dynarray_reset(&s1->library_paths, &s1->nb_library_paths);
 853     dynarray_reset(&s1->crt_paths, &s1->nb_crt_paths);
 854
 855     /* free include paths */
 856     dynarray_reset(&s1->include_paths, &s1->nb_include_paths);
 857     dynarray_reset(&s1->sysinclude_paths, &s1->nb_sysinclude_paths);
 858
 859     tcc_free(s1->tcc_lib_path);
 860     tcc_free(s1->soname);
 861     tcc_free(s1->rpath);
 862     tcc_free(s1->elf_entryname);
 863     tcc_free(s1->init_symbol);
 864     tcc_free(s1->fini_symbol);
 865     tcc_free(s1->mapfile);
 866     tcc_free(s1->outfile);
 867     tcc_free(s1->deps_outfile);
 868 #if defined TCC_TARGET_MACHO
 869     tcc_free(s1->install_name);
 870 #endif
 871     dynarray_reset(&s1->files, &s1->nb_files);
 872     dynarray_reset(&s1->target_deps, &s1->nb_target_deps);
 873     dynarray_reset(&s1->pragma_libs, &s1->nb_pragma_libs);
 874     dynarray_reset(&s1->argv, &s1->argc);
 875     cstr_free(&s1->cmdline_defs);
 876     cstr_free(&s1->cmdline_incl);
 877     cstr_free(&s1->linker_arg);
 878     tcc_free(s1->dState);
 879 #ifdef TCC_IS_NATIVE
 880     /* free runtime memory */
 881     tcc_run_free(s1);
 882 #endif
 883     /* free loaded dlls array */
 884     dynarray_reset(&s1->loaded_dlls, &s1->nb_loaded_dlls);
 885     tcc_free(s1);
 886 #ifdef MEM_DEBUG
 887     tcc_memcheck(-1);
 888 #endif
 889 }
 890
 891 LIBTCCAPI int tcc_set_output_type(TCCState *s, int output_type)
 892 {
 893 #ifdef CONFIG_TCC_PIE
 894     if (output_type == TCC_OUTPUT_EXE)
 895         output_type |= TCC_OUTPUT_DYN;
 896 #endif
 897     s->output_type = output_type;
 898
 899     if (!s->nostdinc) {
 900         /* default include paths */
 901         /* -isystem paths have already been handled */
 902         tcc_add_sysinclude_path(s, CONFIG_TCC_SYSINCLUDEPATHS);
 903     }
 904
 905     if (output_type == TCC_OUTPUT_PREPROCESS) {
 906         s->do_debug = 0;
 907         return 0;
 908     }
 909
 910     /* add sections */
 911     tccelf_new(s);
 912
 913     if (output_type == TCC_OUTPUT_OBJ) {
 914         /* always elf for objects */
 915         s->output_format = TCC_OUTPUT_FORMAT_ELF;
 916         return 0;
 917     }
 918
 919     tcc_add_library_path(s, CONFIG_TCC_LIBPATHS);
 920
 921 #ifdef TCC_TARGET_PE
 922 # ifdef TCC_IS_NATIVE
 923     /* allow linking with system dll's directly */
 924     tcc_add_systemdir(s);
 925 # endif
 926 #elif defined TCC_TARGET_MACHO
 927 # ifdef TCC_IS_NATIVE
 928     tcc_add_macos_sdkpath(s);
 929 # endif
 930 #else
 931     /* paths for crt objects */
 932     tcc_split_path(s, &s->crt_paths, &s->nb_crt_paths, CONFIG_TCC_CRTPREFIX);
 933     if (output_type != TCC_OUTPUT_MEMORY && !s->nostdlib)
 934         tccelf_add_crtbegin(s);
 935 #endif
 936     return 0;
 937 }
 938
 939 LIBTCCAPI int tcc_add_include_path(TCCState *s, const char *pathname)
 940 {
 941     tcc_split_path(s, &s->include_paths, &s->nb_include_paths, pathname);
 942     return 0;
 943 }
 944
 945 LIBTCCAPI int tcc_add_sysinclude_path(TCCState *s, const char *pathname)
 946 {
 947     tcc_split_path(s, &s->sysinclude_paths, &s->nb_sysinclude_paths, pathname);
 948     return 0;
 949 }
 950
 951 /* add/update a 'DLLReference', Just find if level == -1  */
 952 ST_FUNC DLLReference *tcc_add_dllref(TCCState *s1, const char *dllname, int level)
 953 {
 954     DLLReference *ref = NULL;
 955     int i;
 956     for (i = 0; i < s1->nb_loaded_dlls; i++)
 957         if (0 == strcmp(s1->loaded_dlls[i]->name, dllname)) {
 958             ref = s1->loaded_dlls[i];
 959             break;
 960         }
 961     if (level == -1)
 962         return ref;
 963     if (ref) {
 964         if (level < ref->level)
 965             ref->level = level;
 966         ref->found = 1;
 967         return ref;
 968     }
 969     ref = tcc_mallocz(sizeof(DLLReference) + strlen(dllname));
 970     strcpy(ref->name, dllname);
 971     dynarray_add(&s1->loaded_dlls, &s1->nb_loaded_dlls, ref);
 972     ref->level = level;
 973     ref->index = s1->nb_loaded_dlls;
 974     return ref;
 975 }
 976
 977 /* OpenBSD: choose latest from libxxx.so.x.y versions */
 978 #if defined TARGETOS_OpenBSD && !defined _WIN32
 979 #include <glob.h>
 980 static int tcc_glob_so(TCCState *s1, const char *pattern, char *buf, int size)
 981 {
 982     const char *star;
 983     glob_t g;
 984     char *p;
 985     int i, v, v1, v2, v3;
 986
 987     star = strchr(pattern, '*');
 988     if (!star || glob(pattern, 0, NULL, &g))
 989         return -1;
 990     for (v = -1, i = 0; i < g.gl_pathc; ++i) {
 991         p = g.gl_pathv[i];
 992         if (2 != sscanf(p + (star - pattern), "%d.%d.%d", &v1, &v2, &v3))
 993             continue;
 994         if ((v1 = v1 * 1000 + v2) > v)
 995             v = v1, pstrcpy(buf, size, p);
 996     }
 997     globfree(&g);
 998     return v;
 999 }
1000 #endif
1001
1002 ST_FUNC int tcc_add_file_internal(TCCState *s1, const char *filename, int flags)
1003 {
1004     int fd, ret = -1;
1005
1006 #if defined TARGETOS_OpenBSD && !defined _WIN32
1007     char buf[1024];
1008     if (tcc_glob_so(s1, filename, buf, sizeof buf) >= 0)
1009         filename = buf;
1010 #endif
1011
1012     /* ignore binary files with -E */
1013     if (s1->output_type == TCC_OUTPUT_PREPROCESS
1014         && (flags & AFF_TYPE_BIN))
1015         return 0;
1016
1017     /* open the file */
1018     fd = _tcc_open(s1, filename);
1019     if (fd < 0) {
1020         if (flags & AFF_PRINT_ERROR)
1021             tcc_error_noabort("file '%s' not found", filename);
1022         return FILE_NOT_FOUND;
1023     }
1024
1025     s1->current_filename = filename;
1026     if (flags & AFF_TYPE_BIN) {
1027         ElfW(Ehdr) ehdr;
1028         int obj_type;
1029
1030         obj_type = tcc_object_type(fd, &ehdr);
1031         lseek(fd, 0, SEEK_SET);
1032
1033         switch (obj_type) {
1034
1035         case AFF_BINTYPE_REL:
1036             ret = tcc_load_object_file(s1, fd, 0);
1037             break;
1038
1039         case AFF_BINTYPE_AR:
1040             ret = tcc_load_archive(s1, fd, !(flags & AFF_WHOLE_ARCHIVE));
1041             break;
1042
1043 #ifdef TCC_TARGET_PE
1044         default:
1045             ret = pe_load_file(s1, fd, filename);
1046             goto check_success;
1047
1048 #elif defined TCC_TARGET_MACHO
1049         case AFF_BINTYPE_DYN:
1050         case_dyn_or_tbd:
1051             if (s1->output_type == TCC_OUTPUT_MEMORY) {
1052 #ifdef TCC_IS_NATIVE
1053                 void* dl;
1054                 const char* soname = filename;
1055                 if (obj_type != AFF_BINTYPE_DYN)
1056                     soname = macho_tbd_soname(filename);
1057                 dl = dlopen(soname, RTLD_GLOBAL | RTLD_LAZY);
1058                 if (dl)
1059                     tcc_add_dllref(s1, soname, 0)->handle = dl, ret = 0;
1060                 if (filename != soname)
1061                     tcc_free((void *)soname);
1062 #endif
1063             } else if (obj_type == AFF_BINTYPE_DYN) {
1064                 ret = macho_load_dll(s1, fd, filename, (flags & AFF_REFERENCED_DLL) != 0);
1065             } else {
1066                 ret = macho_load_tbd(s1, fd, filename, (flags & AFF_REFERENCED_DLL) != 0);
1067             }
1068             goto check_success;
1069         default:
1070         {
1071             const char *ext = tcc_fileextension(filename);
1072             if (!strcmp(ext, ".tbd"))
1073                 goto case_dyn_or_tbd;
1074             if (!strcmp(ext, ".dylib")) {
1075                 obj_type = AFF_BINTYPE_DYN;
1076                 goto case_dyn_or_tbd;
1077             }
1078             goto check_success;
1079         }
1080
1081 #else /* unix */
1082         case AFF_BINTYPE_DYN:
1083             if (s1->output_type == TCC_OUTPUT_MEMORY) {
1084 #ifdef TCC_IS_NATIVE
1085                 void* dl = dlopen(filename, RTLD_GLOBAL | RTLD_LAZY);
1086                 if (dl)
1087                     tcc_add_dllref(s1, filename, 0)->handle = dl, ret = 0;
1088 #endif
1089             } else
1090                 ret = tcc_load_dll(s1, fd, filename, (flags & AFF_REFERENCED_DLL) != 0);
1091             break;
1092
1093         default:
1094             /* as GNU ld, consider it is an ld script if not recognized */
1095             ret = tcc_load_ldscript(s1, fd);
1096             goto check_success;
1097
1098 #endif /* pe / macos / unix */
1099
1100 check_success:
1101             if (ret < 0)
1102                 tcc_error_noabort("%s: unrecognized file type", filename);
1103             break;
1104
1105 #ifdef TCC_TARGET_COFF
1106         case AFF_BINTYPE_C67:
1107             ret = tcc_load_coff(s1, fd);
1108             break;
1109 #endif
1110         }
1111         close(fd);
1112     } else {
1113         /* update target deps */
1114         dynarray_add(&s1->target_deps, &s1->nb_target_deps, tcc_strdup(filename));
1115         ret = tcc_compile(s1, flags, filename, fd);
1116     }
1117     s1->current_filename = NULL;
1118     return ret;
1119 }
1120
1121 LIBTCCAPI int tcc_add_file(TCCState *s, const char *filename)
1122 {
1123     int filetype = s->filetype;
1124     if (0 == (filetype & AFF_TYPE_MASK)) {
1125         /* use a file extension to detect a filetype */
1126         const char *ext = tcc_fileextension(filename);
1127         if (ext[0]) {
1128             ext++;
1129             if (!strcmp(ext, "S"))
1130                 filetype = AFF_TYPE_ASMPP;
1131             else if (!strcmp(ext, "s"))
1132                 filetype = AFF_TYPE_ASM;
1133             else if (!PATHCMP(ext, "c")
1134                      || !PATHCMP(ext, "h")
1135                      || !PATHCMP(ext, "i"))
1136                 filetype = AFF_TYPE_C;
1137             else
1138                 filetype |= AFF_TYPE_BIN;
1139         } else {
1140             filetype = AFF_TYPE_C;
1141         }
1142     }
1143     return tcc_add_file_internal(s, filename, filetype | AFF_PRINT_ERROR);
1144 }
1145
1146 LIBTCCAPI int tcc_add_library_path(TCCState *s, const char *pathname)
1147 {
1148     tcc_split_path(s, &s->library_paths, &s->nb_library_paths, pathname);
1149     return 0;
1150 }
1151
1152 static int tcc_add_library_internal(TCCState *s1, const char *fmt,
1153     const char *filename, int flags, char **paths, int nb_paths)
1154 {
1155     char buf[1024];
1156     int i, ret;
1157
1158     for(i = 0; i < nb_paths; i++) {
1159         snprintf(buf, sizeof(buf), fmt, paths[i], filename);
1160         ret = tcc_add_file_internal(s1, buf, (flags & ~AFF_PRINT_ERROR) | AFF_TYPE_BIN);
1161         if (ret != FILE_NOT_FOUND)
1162             return ret;
1163     }
1164     if (flags & AFF_PRINT_ERROR)
1165         tcc_error_noabort("file '%s' not found", filename);
1166     return FILE_NOT_FOUND;
1167 }
1168
1169 /* find and load a dll. Return non zero if not found */
1170 ST_FUNC int tcc_add_dll(TCCState *s, const char *filename, int flags)
1171 {
1172     return tcc_add_library_internal(s, "%s/%s", filename, flags,
1173         s->library_paths, s->nb_library_paths);
1174 }
1175
1176 /* find [cross-]libtcc1.a and tcc helper objects in library path */
1177 ST_FUNC void tcc_add_support(TCCState *s1, const char *filename)
1178 {
1179     char buf[100];
1180     if (CONFIG_TCC_CROSSPREFIX[0])
1181         filename = strcat(strcpy(buf, CONFIG_TCC_CROSSPREFIX), filename);
1182     tcc_add_dll(s1, filename, AFF_PRINT_ERROR);
1183 }
1184
1185 #if !defined TCC_TARGET_PE && !defined TCC_TARGET_MACHO
1186 ST_FUNC int tcc_add_crt(TCCState *s1, const char *filename)
1187 {
1188     return tcc_add_library_internal(s1, "%s/%s",
1189         filename, AFF_PRINT_ERROR, s1->crt_paths, s1->nb_crt_paths);
1190 }
1191 #endif
1192
1193 /* the library name is the same as the argument of the '-l' option */
1194 LIBTCCAPI int tcc_add_library(TCCState *s, const char *libraryname)
1195 {
1196 #if defined TCC_TARGET_PE
1197     static const char * const libs[] = { "%s/%s.def", "%s/lib%s.def", "%s/%s.dll", "%s/lib%s.dll", "%s/lib%s.a", NULL };
1198     const char * const *pp = s->static_link ? libs + 4 : libs;
1199 #elif defined TCC_TARGET_MACHO
1200     static const char * const libs[] = { "%s/lib%s.dylib", "%s/lib%s.tbd", "%s/lib%s.a", NULL };
1201     const char * const *pp = s->static_link ? libs + 2 : libs;
1202 #elif defined TARGETOS_OpenBSD
1203     static const char * const libs[] = { "%s/lib%s.so.*", "%s/lib%s.a", NULL };
1204     const char * const *pp = s->static_link ? libs + 1 : libs;
1205 #else
1206     static const char * const libs[] = { "%s/lib%s.so", "%s/lib%s.a", NULL };
1207     const char * const *pp = s->static_link ? libs + 1 : libs;
1208 #endif
1209     int flags = s->filetype & AFF_WHOLE_ARCHIVE;
1210     while (*pp) {
1211         int ret = tcc_add_library_internal(s, *pp,
1212             libraryname, flags, s->library_paths, s->nb_library_paths);
1213         if (ret != FILE_NOT_FOUND)
1214             return ret;
1215         ++pp;
1216     }
1217     return FILE_NOT_FOUND;
1218 }
1219
1220 PUB_FUNC int tcc_add_library_err(TCCState *s1, const char *libname)
1221 {
1222     int ret = tcc_add_library(s1, libname);
1223     if (ret == FILE_NOT_FOUND)
1224         tcc_error_noabort("library '%s' not found", libname);
1225     return ret;
1226 }
1227
1228 /* handle #pragma comment(lib,) */
1229 ST_FUNC void tcc_add_pragma_libs(TCCState *s1)
1230 {
1231     int i;
1232     for (i = 0; i < s1->nb_pragma_libs; i++)
1233         tcc_add_library_err(s1, s1->pragma_libs[i]);
1234 }
1235
1236 LIBTCCAPI int tcc_add_symbol(TCCState *s1, const char *name, const void *val)
1237 {
1238 #ifdef TCC_TARGET_PE
1239     /* On x86_64 'val' might not be reachable with a 32bit offset.
1240        So it is handled here as if it were in a DLL. */
1241     pe_putimport(s1, 0, name, (uintptr_t)val);
1242 #else
1243     char buf[256];
1244     if (s1->leading_underscore) {
1245         buf[0] = '_';
1246         pstrcpy(buf + 1, sizeof(buf) - 1, name);
1247         name = buf;
1248     }
1249     set_global_sym(s1, name, NULL, (addr_t)(uintptr_t)val); /* NULL: SHN_ABS */
1250 #endif
1251     return 0;
1252 }
1253
1254 LIBTCCAPI void tcc_set_lib_path(TCCState *s, const char *path)
1255 {
1256     tcc_free(s->tcc_lib_path);
1257     s->tcc_lib_path = tcc_strdup(path);
1258 }
1259
1260 /********************************************************/
1261 /* options parser */
1262
1263 static int strstart(const char *val, const char **str)
1264 {
1265     const char *p, *q;
1266     p = *str;
1267     q = val;
1268     while (*q) {
1269         if (*p != *q)
1270             return 0;
1271         p++;
1272         q++;
1273     }
1274     *str = p;
1275     return 1;
1276 }
1277
1278 /* Like strstart, but automatically takes into account that ld options can
1279  *
1280  * - start with double or single dash (e.g. '--soname' or '-soname')
1281  * - arguments can be given as separate or after '=' (e.g. '-Wl,-soname,x.so'
1282  *   or '-Wl,-soname=x.so')
1283  *
1284  * you provide `val` always in 'option[=]' form (no leading -)
1285  */
1286 static int link_option(const char *str, const char *val, const char **ptr)
1287 {
1288     const char *p, *q;
1289     int ret;
1290
1291     /* there should be 1 or 2 dashes */
1292     if (*str++ != '-')
1293         return 0;
1294     if (*str == '-')
1295         str++;
1296
1297     /* then str & val should match (potentially up to '=') */
1298     p = str;
1299     q = val;
1300
1301     ret = 1;
1302     if (q[0] == '?') {
1303         ++q;
1304         if (strstart("no-", &p))
1305             ret = -1;
1306     }
1307
1308     while (*q != '\0' && *q != '=') {
1309         if (*p != *q)
1310             return 0;
1311         p++;
1312         q++;
1313     }
1314
1315     /* '=' near eos means ',' or '=' is ok */
1316     if (*q == '=') {
1317         if (*p == 0)
1318             *ptr = p;
1319         if (*p != ',' && *p != '=')
1320             return 0;
1321         p++;
1322     } else if (*p) {
1323         return 0;
1324     }
1325     *ptr = p;
1326     return ret;
1327 }
1328
1329 static const char *skip_linker_arg(const char **str)
1330 {
1331     const char *s1 = *str;
1332     const char *s2 = strchr(s1, ',');
1333     *str = s2 ? s2++ : (s2 = s1 + strlen(s1));
1334     return s2;
1335 }
1336
1337 static void copy_linker_arg(char **pp, const char *s, int sep)
1338 {
1339     const char *q = s;
1340     char *p = *pp;
1341     int l = 0;
1342     if (p && sep)
1343         p[l = strlen(p)] = sep, ++l;
1344     skip_linker_arg(&q);
1345     pstrncpy(l + (*pp = tcc_realloc(p, q - s + l + 1)), s, q - s);
1346 }
1347
1348 static void args_parser_add_file(TCCState *s, const char* filename, int filetype)
1349 {
1350     struct filespec *f = tcc_malloc(sizeof *f + strlen(filename));
1351     f->type = filetype;
1352     strcpy(f->name, filename);
1353     dynarray_add(&s->files, &s->nb_files, f);
1354 }
1355
1356 /* set linker options */
1357 static int tcc_set_linker(TCCState *s, const char *option)
1358 {
1359     TCCState *s1 = s;
1360     while (*option) {
1361
1362         const char *p = NULL;
1363         char *end = NULL;
1364         int ignoring = 0;
1365         int ret;
1366
1367         if (link_option(option, "Bsymbolic", &p)) {
1368             s->symbolic = 1;
1369         } else if (link_option(option, "nostdlib", &p)) {
1370             s->nostdlib = 1;
1371         } else if (link_option(option, "e=", &p)
1372                ||  link_option(option, "entry=", &p)) {
1373             copy_linker_arg(&s->elf_entryname, p, 0);
1374         } else if (link_option(option, "fini=", &p)) {
1375             copy_linker_arg(&s->fini_symbol, p, 0);
1376             ignoring = 1;
1377         } else if (link_option(option, "image-base=", &p)
1378                 || link_option(option, "Ttext=", &p)) {
1379             s->text_addr = strtoull(p, &end, 16);
1380             s->has_text_addr = 1;
1381         } else if (link_option(option, "init=", &p)) {
1382             copy_linker_arg(&s->init_symbol, p, 0);
1383             ignoring = 1;
1384         } else if (link_option(option, "Map=", &p)) {
1385             copy_linker_arg(&s->mapfile, p, 0);
1386             ignoring = 1;
1387         } else if (link_option(option, "oformat=", &p)) {
1388 #if defined(TCC_TARGET_PE)
1389             if (strstart("pe-", &p)) {
1390 #elif PTR_SIZE == 8
1391             if (strstart("elf64-", &p)) {
1392 #else
1393             if (strstart("elf32-", &p)) {
1394 #endif
1395                 s->output_format = TCC_OUTPUT_FORMAT_ELF;
1396             } else if (!strcmp(p, "binary")) {
1397                 s->output_format = TCC_OUTPUT_FORMAT_BINARY;
1398 #ifdef TCC_TARGET_COFF
1399             } else if (!strcmp(p, "coff")) {
1400                 s->output_format = TCC_OUTPUT_FORMAT_COFF;
1401 #endif
1402             } else
1403                 goto err;
1404
1405         } else if (link_option(option, "as-needed", &p)) {
1406             ignoring = 1;
1407         } else if (link_option(option, "O", &p)) {
1408             ignoring = 1;
1409         } else if (link_option(option, "export-all-symbols", &p)) {
1410             s->rdynamic = 1;
1411         } else if (link_option(option, "export-dynamic", &p)) {
1412             s->rdynamic = 1;
1413         } else if (link_option(option, "rpath=", &p)) {
1414             copy_linker_arg(&s->rpath, p, ':');
1415         } else if (link_option(option, "enable-new-dtags", &p)) {
1416             s->enable_new_dtags = 1;
1417         } else if (link_option(option, "section-alignment=", &p)) {
1418             s->section_align = strtoul(p, &end, 16);
1419         } else if (link_option(option, "soname=", &p)) {
1420             copy_linker_arg(&s->soname, p, 0);
1421         } else if (link_option(option, "install_name=", &p)) {
1422             copy_linker_arg(&s->soname, p, 0);
1423 #ifdef TCC_TARGET_PE
1424         } else if (link_option(option, "large-address-aware", &p)) {
1425             s->pe_characteristics |= 0x20;
1426         } else if (link_option(option, "file-alignment=", &p)) {
1427             s->pe_file_align = strtoul(p, &end, 16);
1428         } else if (link_option(option, "stack=", &p)) {
1429             s->pe_stack_size = strtoul(p, &end, 10);
1430         } else if (link_option(option, "subsystem=", &p)) {
1431 #if defined(TCC_TARGET_I386) || defined(TCC_TARGET_X86_64)
1432             if (strstart("native", &p)) {
1433                 s->pe_subsystem = 1;
1434             } else if (strstart("console", &p)) {
1435                 s->pe_subsystem = 3;
1436             } else if (strstart("gui", &p) || strstart("windows", &p)) {
1437                 s->pe_subsystem = 2;
1438             } else if (strstart("posix", &p)) {
1439                 s->pe_subsystem = 7;
1440             } else if (strstart("efiapp", &p)) {
1441                 s->pe_subsystem = 10;
1442             } else if (strstart("efiboot", &p)) {
1443                 s->pe_subsystem = 11;
1444             } else if (strstart("efiruntime", &p)) {
1445                 s->pe_subsystem = 12;
1446             } else if (strstart("efirom", &p)) {
1447                 s->pe_subsystem = 13;
1448 #elif defined(TCC_TARGET_ARM)
1449             if (strstart("wince", &p)) {
1450                 s->pe_subsystem = 9;
1451 #endif
1452             } else
1453                 goto err;
1454 #endif
1455 #ifdef TCC_TARGET_MACHO
1456         } else if (link_option(option, "all_load", &p)) {
1457             s->filetype |= AFF_WHOLE_ARCHIVE;
1458         } else if (link_option(option, "force_load", &p)) {
1459             s->filetype |= AFF_WHOLE_ARCHIVE;
1460             args_parser_add_file(s, p, AFF_TYPE_LIB | (s->filetype & ~AFF_TYPE_MASK));
1461             s->nb_libraries++;
1462         } else if (link_option(option, "single_module", &p)) {
1463             ignoring = 1;
1464 #endif
1465         } else if (ret = link_option(option, "?whole-archive", &p), ret) {
1466             if (ret > 0)
1467                 s->filetype |= AFF_WHOLE_ARCHIVE;
1468             else
1469                 s->filetype &= ~AFF_WHOLE_ARCHIVE;
1470         } else if (link_option(option, "z=", &p)) {
1471             ignoring = 1;
1472         } else if (p) {
1473             return 0;
1474         } else {
1475     err:
1476             return tcc_error_noabort("unsupported linker option '%s'", option);
1477         }
1478         if (ignoring)
1479             tcc_warning_c(warn_unsupported)("unsupported linker option '%s'", option);
1480         option = skip_linker_arg(&p);
1481     }
1482     return 1;
1483 }
1484
1485 typedef struct TCCOption {
1486     const char *name;
1487     uint16_t index;
1488     uint16_t flags;
1489 } TCCOption;
1490
1491 enum {
1492     TCC_OPTION_ignored = 0,
1493     TCC_OPTION_HELP,
1494     TCC_OPTION_HELP2,
1495     TCC_OPTION_v,
1496     TCC_OPTION_I,
1497     TCC_OPTION_D,
1498     TCC_OPTION_U,
1499     TCC_OPTION_P,
1500     TCC_OPTION_L,
1501     TCC_OPTION_B,
1502     TCC_OPTION_l,
1503     TCC_OPTION_bench,
1504     TCC_OPTION_bt,
1505     TCC_OPTION_b,
1506     TCC_OPTION_ba,
1507     TCC_OPTION_g,
1508     TCC_OPTION_c,
1509     TCC_OPTION_dumpmachine,
1510     TCC_OPTION_dumpversion,
1511     TCC_OPTION_d,
1512     TCC_OPTION_static,
1513     TCC_OPTION_std,
1514     TCC_OPTION_shared,
1515     TCC_OPTION_soname,
1516     TCC_OPTION_o,
1517     TCC_OPTION_r,
1518     TCC_OPTION_Wl,
1519     TCC_OPTION_Wp,
1520     TCC_OPTION_W,
1521     TCC_OPTION_O,
1522     TCC_OPTION_mfloat_abi,
1523     TCC_OPTION_m,
1524     TCC_OPTION_f,
1525     TCC_OPTION_isystem,
1526     TCC_OPTION_iwithprefix,
1527     TCC_OPTION_include,
1528     TCC_OPTION_nostdinc,
1529     TCC_OPTION_nostdlib,
1530     TCC_OPTION_print_search_dirs,
1531     TCC_OPTION_rdynamic,
1532     TCC_OPTION_pthread,
1533     TCC_OPTION_run,
1534     TCC_OPTION_w,
1535     TCC_OPTION_E,
1536     TCC_OPTION_M,
1537     TCC_OPTION_MD,
1538     TCC_OPTION_MF,
1539     TCC_OPTION_MM,
1540     TCC_OPTION_MMD,
1541     TCC_OPTION_MP,
1542     TCC_OPTION_x,
1543     TCC_OPTION_ar,
1544     TCC_OPTION_impdef,
1545     TCC_OPTION_dynamiclib,
1546     TCC_OPTION_flat_namespace,
1547     TCC_OPTION_two_levelnamespace,
1548     TCC_OPTION_undefined,
1549     TCC_OPTION_install_name,
1550     TCC_OPTION_compatibility_version ,
1551     TCC_OPTION_current_version,
1552 };
1553
1554 #define TCC_OPTION_HAS_ARG 0x0001
1555 #define TCC_OPTION_NOSEP   0x0002 /* cannot have space before option and arg */
1556
1557 static const TCCOption tcc_options[] = {
1558     { "h", TCC_OPTION_HELP, 0 },
1559     { "-help", TCC_OPTION_HELP, 0 },
1560     { "?", TCC_OPTION_HELP, 0 },
1561     { "hh", TCC_OPTION_HELP2, 0 },
1562     { "v", TCC_OPTION_v, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1563     { "-version", TCC_OPTION_v, 0 }, /* handle as verbose, also prints version*/
1564     { "I", TCC_OPTION_I, TCC_OPTION_HAS_ARG },
1565     { "D", TCC_OPTION_D, TCC_OPTION_HAS_ARG },
1566     { "U", TCC_OPTION_U, TCC_OPTION_HAS_ARG },
1567     { "P", TCC_OPTION_P, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1568     { "L", TCC_OPTION_L, TCC_OPTION_HAS_ARG },
1569     { "B", TCC_OPTION_B, TCC_OPTION_HAS_ARG },
1570     { "l", TCC_OPTION_l, TCC_OPTION_HAS_ARG },
1571     { "bench", TCC_OPTION_bench, 0 },
1572 #ifdef CONFIG_TCC_BACKTRACE
1573     { "bt", TCC_OPTION_bt, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1574 #endif
1575 #ifdef CONFIG_TCC_BCHECK
1576     { "b", TCC_OPTION_b, 0 },
1577 #endif
1578     { "g", TCC_OPTION_g, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1579 #ifdef TCC_TARGET_MACHO
1580     { "compatibility_version", TCC_OPTION_compatibility_version, TCC_OPTION_HAS_ARG },
1581     { "current_version", TCC_OPTION_current_version, TCC_OPTION_HAS_ARG },
1582 #endif
1583     { "c", TCC_OPTION_c, 0 },
1584 #ifdef TCC_TARGET_MACHO
1585     { "dynamiclib", TCC_OPTION_dynamiclib, 0 },
1586 #endif
1587     { "dumpmachine", TCC_OPTION_dumpmachine, 0},
1588     { "dumpversion", TCC_OPTION_dumpversion, 0},
1589     { "d", TCC_OPTION_d, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1590     { "static", TCC_OPTION_static, 0 },
1591     { "std", TCC_OPTION_std, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1592     { "shared", TCC_OPTION_shared, 0 },
1593     { "soname", TCC_OPTION_soname, TCC_OPTION_HAS_ARG },
1594     { "o", TCC_OPTION_o, TCC_OPTION_HAS_ARG },
1595     { "pthread", TCC_OPTION_pthread, 0},
1596     { "run", TCC_OPTION_run, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1597     { "rdynamic", TCC_OPTION_rdynamic, 0 },
1598     { "r", TCC_OPTION_r, 0 },
1599     { "Wl,", TCC_OPTION_Wl, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1600     { "Wp,", TCC_OPTION_Wp, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1601     { "W", TCC_OPTION_W, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1602     { "O", TCC_OPTION_O, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1603 #ifdef TCC_TARGET_ARM
1604     { "mfloat-abi", TCC_OPTION_mfloat_abi, TCC_OPTION_HAS_ARG },
1605 #endif
1606     { "m", TCC_OPTION_m, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1607 #ifdef TCC_TARGET_MACHO
1608     { "flat_namespace", TCC_OPTION_flat_namespace, 0 },
1609 #endif
1610     { "f", TCC_OPTION_f, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1611     { "isystem", TCC_OPTION_isystem, TCC_OPTION_HAS_ARG },
1612     { "include", TCC_OPTION_include, TCC_OPTION_HAS_ARG },
1613     { "nostdinc", TCC_OPTION_nostdinc, 0 },
1614     { "nostdlib", TCC_OPTION_nostdlib, 0 },
1615     { "print-search-dirs", TCC_OPTION_print_search_dirs, 0 },
1616     { "w", TCC_OPTION_w, 0 },
1617     { "E", TCC_OPTION_E, 0},
1618     { "M", TCC_OPTION_M, 0},
1619     { "MD", TCC_OPTION_MD, 0},
1620     { "MF", TCC_OPTION_MF, TCC_OPTION_HAS_ARG },
1621     { "MM", TCC_OPTION_MM, 0},
1622     { "MMD", TCC_OPTION_MMD, 0},
1623     { "MP", TCC_OPTION_MP, 0},
1624     { "x", TCC_OPTION_x, TCC_OPTION_HAS_ARG },
1625     { "ar", TCC_OPTION_ar, 0},
1626 #ifdef TCC_TARGET_PE
1627     { "impdef", TCC_OPTION_impdef, 0},
1628 #endif
1629 #ifdef TCC_TARGET_MACHO
1630     { "install_name", TCC_OPTION_install_name, TCC_OPTION_HAS_ARG },
1631     { "two_levelnamespace", TCC_OPTION_two_levelnamespace, 0 },
1632     { "undefined", TCC_OPTION_undefined, TCC_OPTION_HAS_ARG },
1633 #endif
1634     /* ignored (silently, except after -Wunsupported) */
1635     { "arch", 0, TCC_OPTION_HAS_ARG},
1636     { "C", 0, 0 },
1637     { "-param", 0, TCC_OPTION_HAS_ARG },
1638     { "pedantic", 0, 0 },
1639     { "pipe", 0, 0 },
1640     { "s", 0, 0 },
1641     { "traditional", 0, 0 },
1642     { NULL, 0, 0 },
1643 };
1644
1645 typedef struct FlagDef {
1646     uint16_t offset;
1647     uint16_t flags;
1648     const char *name;
1649 } FlagDef;
1650
1651 #define WD_ALL    0x0001 /* warning is activated when using -Wall */
1652 #define FD_INVERT 0x0002 /* invert value before storing */
1653
1654 static const FlagDef options_W[] = {
1655     { offsetof(TCCState, warn_all), WD_ALL, "all" },
1656     { offsetof(TCCState, warn_error), 0, "error" },
1657     { offsetof(TCCState, warn_write_strings), 0, "write-strings" },
1658     { offsetof(TCCState, warn_unsupported), 0, "unsupported" },
1659     { offsetof(TCCState, warn_implicit_function_declaration), WD_ALL, "implicit-function-declaration" },
1660     { offsetof(TCCState, warn_discarded_qualifiers), WD_ALL, "discarded-qualifiers" },
1661     { 0, 0, NULL }
1662 };
1663
1664 static const FlagDef options_f[] = {
1665     { offsetof(TCCState, char_is_unsigned), 0, "unsigned-char" },
1666     { offsetof(TCCState, char_is_unsigned), FD_INVERT, "signed-char" },
1667     { offsetof(TCCState, nocommon), FD_INVERT, "common" },
1668     { offsetof(TCCState, leading_underscore), 0, "leading-underscore" },
1669     { offsetof(TCCState, ms_extensions), 0, "ms-extensions" },
1670     { offsetof(TCCState, dollars_in_identifiers), 0, "dollars-in-identifiers" },
1671     { offsetof(TCCState, test_coverage), 0, "test-coverage" },
1672     { 0, 0, NULL }
1673 };
1674
1675 static const FlagDef options_m[] = {
1676     { offsetof(TCCState, ms_bitfields), 0, "ms-bitfields" },
1677 #ifdef TCC_TARGET_X86_64
1678     { offsetof(TCCState, nosse), FD_INVERT, "sse" },
1679 #endif
1680     { 0, 0, NULL }
1681 };
1682
1683 static int set_flag(TCCState *s, const FlagDef *flags, const char *name)
1684 {
1685     int value, mask, ret;
1686     const FlagDef *p;
1687     const char *r;
1688     unsigned char *f;
1689
1690     r = name, value = !strstart("no-", &r), mask = 0;
1691
1692     /* when called with options_W, look for -W[no-]error=<option> */
1693     if ((flags->flags & WD_ALL) && strstart("error=", &r))
1694         value = value ? WARN_ON|WARN_ERR : WARN_NOE, mask = WARN_ON;
1695
1696     for (ret = -1, p = flags; p->name; ++p) {
1697         if (ret) {
1698             if (strcmp(r, p->name))
1699                 continue;
1700         } else {
1701             if (0 == (p->flags & WD_ALL))
1702                 continue;
1703         }
1704
1705         f = (unsigned char *)s + p->offset;
1706         *f = (*f & mask) | (value ^ !!(p->flags & FD_INVERT));
1707
1708         if (ret) {
1709             ret = 0;
1710             if (strcmp(r, "all"))
1711                 break;
1712         }
1713     }
1714     return ret;
1715 }
1716
1717 static const char dumpmachine_str[] =
1718 /* this is a best guess, please refine as necessary */
1719 #ifdef TCC_TARGET_I386
1720     "i386-pc"
1721 #elif defined TCC_TARGET_X86_64
1722     "x86_64-pc"
1723 #elif defined TCC_TARGET_C67
1724     "c67"
1725 #elif defined TCC_TARGET_ARM
1726     "arm"
1727 #elif defined TCC_TARGET_ARM64
1728     "aarch64"
1729 #elif defined TCC_TARGET_RISCV64
1730     "riscv64"
1731 #endif
1732     "-"
1733 #ifdef TCC_TARGET_PE
1734     "mingw32"
1735 #elif defined(TCC_TARGET_MACHO)
1736     "apple-darwin"
1737 #elif TARGETOS_FreeBSD || TARGETOS_FreeBSD_kernel
1738     "freebsd"
1739 #elif TARGETOS_OpenBSD
1740     "openbsd"
1741 #elif TARGETOS_NetBSD
1742     "netbsd"
1743 #elif TCC_MUSL
1744     "linux-musl"
1745 #else
1746     "linux-gnu"
1747 #endif
1748 ;
1749
1750 static int args_parser_make_argv(const char *r, int *argc, char ***argv)
1751 {
1752     int ret = 0, q, c;
1753     CString str;
1754     for(;;) {
1755         while (c = (unsigned char)*r, c && c <= ' ')
1756           ++r;
1757         if (c == 0)
1758             break;
1759         q = 0;
1760         cstr_new(&str);
1761         while (c = (unsigned char)*r, c) {
1762             ++r;
1763             if (c == '\\' && (*r == '"' || *r == '\\')) {
1764                 c = *r++;
1765             } else if (c == '"') {
1766                 q = !q;
1767                 continue;
1768             } else if (q == 0 && c <= ' ') {
1769                 break;
1770             }
1771             cstr_ccat(&str, c);
1772         }
1773         cstr_ccat(&str, 0);
1774         //printf("<%s>\n", str.data), fflush(stdout);
1775         dynarray_add(argv, argc, tcc_strdup(str.data));
1776         cstr_free(&str);
1777         ++ret;
1778     }
1779     return ret;
1780 }
1781
1782 /* read list file */
1783 static int args_parser_listfile(TCCState *s,
1784     const char *filename, int optind, int *pargc, char ***pargv)
1785 {
1786     TCCState *s1 = s;
1787     int fd, i;
1788     char *p;
1789     int argc = 0;
1790     char **argv = NULL;
1791
1792     fd = open(filename, O_RDONLY | O_BINARY);
1793     if (fd < 0)
1794         return tcc_error_noabort("listfile '%s' not found", filename);
1795
1796     p = tcc_load_text(fd);
1797     for (i = 0; i < *pargc; ++i)
1798         if (i == optind)
1799             args_parser_make_argv(p, &argc, &argv);
1800         else
1801             dynarray_add(&argv, &argc, tcc_strdup((*pargv)[i]));
1802
1803     tcc_free(p);
1804     dynarray_reset(&s->argv, &s->argc);
1805     *pargc = s->argc = argc, *pargv = s->argv = argv;
1806     return 0;
1807 }
1808
1809 #if defined TCC_TARGET_MACHO
1810 static uint32_t parse_version(TCCState *s1, const char *version)
1811 {
1812     uint32_t a = 0;
1813     uint32_t b = 0;
1814     uint32_t c = 0;
1815     char* last;
1816
1817     a = strtoul(version, &last, 10);
1818     if (*last == '.') {
1819         b = strtoul(&last[1], &last, 10);
1820         if (*last == '.')
1821              c = strtoul(&last[1], &last, 10);
1822     }
1823     if (*last || a > 0xffff || b > 0xff || c > 0xff)
1824         tcc_error_noabort("version a.b.c not correct: %s", version);
1825     return (a << 16) | (b << 8) | c;
1826 }
1827 #endif
1828
1829 PUB_FUNC int tcc_parse_args(TCCState *s, int *pargc, char ***pargv, int optind)
1830 {
1831     TCCState *s1 = s;
1832     const TCCOption *popt;
1833     const char *optarg, *r;
1834     const char *run = NULL;
1835     int x;
1836     int tool = 0, arg_start = 0, noaction = optind;
1837     char **argv = *pargv;
1838     int argc = *pargc;
1839
1840     cstr_reset(&s->linker_arg);
1841
1842     while (optind < argc) {
1843         r = argv[optind];
1844         if (r[0] == '@' && r[1] != '\0') {
1845             if (args_parser_listfile(s, r + 1, optind, &argc, &argv))
1846                 return -1;
1847             continue;
1848         }
1849         optind++;
1850         if (tool) {
1851             if (r[0] == '-' && r[1] == 'v' && r[2] == 0)
1852                 ++s->verbose;
1853             continue;
1854         }
1855 reparse:
1856         if (r[0] != '-' || r[1] == '\0') {
1857             args_parser_add_file(s, r, s->filetype);
1858             if (run) {
1859 dorun:
1860                 if (tcc_set_options(s, run))
1861                     return -1;
1862                 arg_start = optind - 1;
1863                 break;
1864             }
1865             continue;
1866         }
1867
1868         /* allow "tcc files... -run -- args ..." */
1869         if (r[1] == '-' && r[2] == '\0' && run)
1870             goto dorun;
1871
1872         /* find option in table */
1873         for(popt = tcc_options; ; ++popt) {
1874             const char *p1 = popt->name;
1875             const char *r1 = r + 1;
1876             if (p1 == NULL)
1877                 return tcc_error_noabort("invalid option -- '%s'", r);
1878             if (!strstart(p1, &r1))
1879                 continue;
1880             optarg = r1;
1881             if (popt->flags & TCC_OPTION_HAS_ARG) {
1882                 if (*r1 == '\0' && !(popt->flags & TCC_OPTION_NOSEP)) {
1883                     if (optind >= argc)
1884                 arg_err:
1885                         return tcc_error_noabort("argument to '%s' is missing", r);
1886                     optarg = argv[optind++];
1887                 }
1888             } else if (*r1 != '\0')
1889                 continue;
1890             break;
1891         }
1892
1893         switch(popt->index) {
1894         case TCC_OPTION_HELP:
1895             x = OPT_HELP;
1896             goto extra_action;
1897         case TCC_OPTION_HELP2:
1898             x = OPT_HELP2;
1899             goto extra_action;
1900         case TCC_OPTION_I:
1901             tcc_add_include_path(s, optarg);
1902             break;
1903         case TCC_OPTION_D:
1904             tcc_define_symbol(s, optarg, NULL);
1905             break;
1906         case TCC_OPTION_U:
1907             tcc_undefine_symbol(s, optarg);
1908             break;
1909         case TCC_OPTION_L:
1910             tcc_add_library_path(s, optarg);
1911             break;
1912         case TCC_OPTION_B:
1913             /* set tcc utilities path (mainly for tcc development) */
1914             tcc_set_lib_path(s, optarg);
1915             ++noaction;
1916             break;
1917         case TCC_OPTION_l:
1918             args_parser_add_file(s, optarg, AFF_TYPE_LIB | (s->filetype & ~AFF_TYPE_MASK));
1919             s->nb_libraries++;
1920             break;
1921         case TCC_OPTION_pthread:
1922             s->option_pthread = 1;
1923             break;
1924         case TCC_OPTION_bench:
1925             s->do_bench = 1;
1926             break;
1927 #ifdef CONFIG_TCC_BACKTRACE
1928         case TCC_OPTION_bt:
1929             s->rt_num_callers = atoi(optarg); /* zero = default (6) */
1930             goto enable_backtrace;
1931         enable_backtrace:
1932             s->do_backtrace = 1;
1933             s->do_debug = s->do_debug ? s->do_debug : 1;
1934             s->dwarf = DWARF_VERSION;
1935             break;
1936 #ifdef CONFIG_TCC_BCHECK
1937         case TCC_OPTION_b:
1938             s->do_bounds_check = 1;
1939             goto enable_backtrace;
1940 #endif
1941 #endif
1942         case TCC_OPTION_g:
1943             s->do_debug = 2;
1944             s->dwarf = DWARF_VERSION;
1945             if (strstart("dwarf", &optarg)) {
1946                 s->dwarf = (*optarg) ? (0 - atoi(optarg)) : DEFAULT_DWARF_VERSION;
1947             } else if (isnum(*optarg)) {
1948                 x = *optarg - '0';
1949                 /* -g0 = no info, -g1 = lines/functions only, -g2 = full info */
1950                 s->do_debug = x > 2 ? 2 : x == 0 && s->do_backtrace ? 1 : x;
1951 #ifdef TCC_TARGET_PE
1952             } else if (0 == strcmp(".pdb", optarg)) {
1953                 s->dwarf = 5, s->do_debug |= 16;
1954 #endif
1955             }
1956             break;
1957         case TCC_OPTION_c:
1958             x = TCC_OUTPUT_OBJ;
1959         set_output_type:
1960             if (s->output_type)
1961                 tcc_warning("-%s: overriding compiler action already specified", popt->name);
1962             s->output_type = x;
1963             break;
1964         case TCC_OPTION_d:
1965             if (*optarg == 'D')
1966                 s->dflag = 3;
1967             else if (*optarg == 'M')
1968                 s->dflag = 7;
1969             else if (*optarg == 't')
1970                 s->dflag = 16;
1971             else if (isnum(*optarg))
1972                 s->g_debug |= atoi(optarg);
1973             else
1974                 goto unsupported_option;
1975             break;
1976         case TCC_OPTION_static:
1977             s->static_link = 1;
1978             break;
1979         case TCC_OPTION_std:
1980             if (strcmp(optarg, "=c11") == 0 || strcmp(optarg, "=gnu11") == 0)
1981                 s->cversion = 201112;
1982             break;
1983         case TCC_OPTION_shared:
1984             x = TCC_OUTPUT_DLL;
1985             goto set_output_type;
1986         case TCC_OPTION_soname:
1987             s->soname = tcc_strdup(optarg);
1988             break;
1989         case TCC_OPTION_o:
1990             if (s->outfile) {
1991                 tcc_warning("multiple -o option");
1992                 tcc_free(s->outfile);
1993             }
1994             s->outfile = tcc_strdup(optarg);
1995             break;
1996         case TCC_OPTION_r:
1997             /* generate a .o merging several output files */
1998             s->option_r = 1;
1999             x = TCC_OUTPUT_OBJ;
2000             goto set_output_type;
2001         case TCC_OPTION_isystem:
2002             tcc_add_sysinclude_path(s, optarg);
2003             break;
2004         case TCC_OPTION_include:
2005             cstr_printf(&s->cmdline_incl, "#include \"%s\"\n", optarg);
2006             break;
2007         case TCC_OPTION_nostdinc:
2008             s->nostdinc = 1;
2009             break;
2010         case TCC_OPTION_nostdlib:
2011             s->nostdlib = 1;
2012             break;
2013         case TCC_OPTION_run:
2014 #ifndef TCC_IS_NATIVE
2015             return tcc_error_noabort("-run is not available in a cross compiler");
2016 #else
2017             run = optarg;
2018             x = TCC_OUTPUT_MEMORY;
2019             goto set_output_type;
2020 #endif
2021         case TCC_OPTION_v:
2022             do ++s->verbose; while (*optarg++ == 'v');
2023             ++noaction;
2024             break;
2025         case TCC_OPTION_f:
2026             if (set_flag(s, options_f, optarg) < 0)
2027                 goto unsupported_option;
2028             break;
2029 #ifdef TCC_TARGET_ARM
2030         case TCC_OPTION_mfloat_abi:
2031             /* tcc doesn't support soft float yet */
2032             if (!strcmp(optarg, "softfp")) {
2033                 s->float_abi = ARM_SOFTFP_FLOAT;
2034             } else if (!strcmp(optarg, "hard"))
2035                 s->float_abi = ARM_HARD_FLOAT;
2036             else
2037                 return tcc_error_noabort("unsupported float abi '%s'", optarg);
2038             break;
2039 #endif
2040         case TCC_OPTION_m:
2041             if (set_flag(s, options_m, optarg) < 0) {
2042                 if (x = atoi(optarg), x != 32 && x != 64)
2043                     goto unsupported_option;
2044                 if (PTR_SIZE != x/8)
2045                     return x;
2046                 ++noaction;
2047             }
2048             break;
2049         case TCC_OPTION_W:
2050             s->warn_none = 0;
2051             if (optarg[0] && set_flag(s, options_W, optarg) < 0)
2052                 goto unsupported_option;
2053             break;
2054         case TCC_OPTION_w:
2055             s->warn_none = 1;
2056             break;
2057         case TCC_OPTION_rdynamic:
2058             s->rdynamic = 1;
2059             break;
2060         case TCC_OPTION_Wl:
2061             if (s->linker_arg.size)
2062                 ((char*)s->linker_arg.data)[s->linker_arg.size - 1] = ',';
2063             cstr_cat(&s->linker_arg, optarg, 0);
2064             x = tcc_set_linker(s, s->linker_arg.data);
2065             if (x)
2066                 cstr_reset(&s->linker_arg);
2067             if (x < 0)
2068                 return -1;
2069             break;
2070         case TCC_OPTION_Wp:
2071             r = optarg;
2072             goto reparse;
2073         case TCC_OPTION_E:
2074             x = TCC_OUTPUT_PREPROCESS;
2075             goto set_output_type;
2076         case TCC_OPTION_P:
2077             s->Pflag = atoi(optarg) + 1;
2078             break;
2079         case TCC_OPTION_M:
2080             s->include_sys_deps = 1;
2081             // fall through
2082         case TCC_OPTION_MM:
2083             s->just_deps = 1;
2084             if(!s->deps_outfile)
2085                 s->deps_outfile = tcc_strdup("-");
2086             // fall through
2087         case TCC_OPTION_MMD:
2088             s->gen_deps = 1;
2089             break;
2090         case TCC_OPTION_MD:
2091             s->gen_deps = 1;
2092             s->include_sys_deps = 1;
2093             break;
2094         case TCC_OPTION_MF:
2095             s->deps_outfile = tcc_strdup(optarg);
2096             break;
2097         case TCC_OPTION_MP:
2098             s->gen_phony_deps = 1;
2099             break;
2100         case TCC_OPTION_dumpmachine:
2101             printf("%s\n", dumpmachine_str);
2102             exit(0);
2103         case TCC_OPTION_dumpversion:
2104             printf ("%s\n", TCC_VERSION);
2105             exit(0);
2106         case TCC_OPTION_x:
2107             x = 0;
2108             if (*optarg == 'c')
2109                 x = AFF_TYPE_C;
2110             else if (*optarg == 'a')
2111                 x = AFF_TYPE_ASMPP;
2112             else if (*optarg == 'b')
2113                 x = AFF_TYPE_BIN;
2114             else if (*optarg == 'n')
2115                 x = AFF_TYPE_NONE;
2116             else
2117                 tcc_warning("unsupported language '%s'", optarg);
2118             s->filetype = x | (s->filetype & ~AFF_TYPE_MASK);
2119             break;
2120         case TCC_OPTION_O:
2121             s->optimize = atoi(optarg);
2122             break;
2123         case TCC_OPTION_print_search_dirs:
2124             x = OPT_PRINT_DIRS;
2125             goto extra_action;
2126         case TCC_OPTION_impdef:
2127             x = OPT_IMPDEF;
2128             goto extra_action;
2129 #if defined TCC_TARGET_MACHO
2130         case TCC_OPTION_dynamiclib:
2131             x = TCC_OUTPUT_DLL;
2132             goto set_output_type;
2133         case TCC_OPTION_flat_namespace:
2134              break;
2135         case TCC_OPTION_two_levelnamespace:
2136              break;
2137         case TCC_OPTION_undefined:
2138              break;
2139         case TCC_OPTION_install_name:
2140             s->install_name = tcc_strdup(optarg);
2141             break;
2142         case TCC_OPTION_compatibility_version:
2143             s->compatibility_version = parse_version(s, optarg);
2144             break;
2145         case TCC_OPTION_current_version:
2146             s->current_version = parse_version(s, optarg);;
2147             break;
2148 #endif
2149         case TCC_OPTION_ar:
2150             x = OPT_AR;
2151         extra_action:
2152             arg_start = optind - 1;
2153             if (arg_start != noaction)
2154                 return tcc_error_noabort("cannot parse %s here", r);
2155             tool = x;
2156             break;
2157         default:
2158 unsupported_option:
2159             tcc_warning_c(warn_unsupported)("unsupported option '%s'", r);
2160             break;
2161         }
2162     }
2163     if (s->linker_arg.size) {
2164         r = s->linker_arg.data;
2165         goto arg_err;
2166     }
2167     *pargc = argc - arg_start;
2168     *pargv = argv + arg_start;
2169     if (tool)
2170         return tool;
2171     if (optind != noaction)
2172         return 0;
2173     if (s->verbose == 2)
2174         return OPT_PRINT_DIRS;
2175     if (s->verbose)
2176         return OPT_V;
2177     return OPT_HELP;
2178 }
2179
2180 LIBTCCAPI int tcc_set_options(TCCState *s, const char *r)
2181 {
2182     char **argv = NULL;
2183     int argc = 0, ret;
2184     args_parser_make_argv(r, &argc, &argv);
2185     ret = tcc_parse_args(s, &argc, &argv, 0);
2186     dynarray_reset(&argv, &argc);
2187     return ret < 0 ? ret : 0;
2188 }
2189
2190 PUB_FUNC void tcc_print_stats(TCCState *s1, unsigned total_time)
2191 {
2192     if (!total_time)
2193         total_time = 1;
2194     fprintf(stderr, "# %d idents, %d lines, %u bytes\n"
2195                     "# %0.3f s, %u lines/s, %0.1f MB/s\n",
2196            total_idents, total_lines, total_bytes,
2197            (double)total_time/1000,
2198            (unsigned)total_lines*1000/total_time,
2199            (double)total_bytes/1000/total_time);
2200     fprintf(stderr, "# text %u, data.rw %u, data.ro %u, bss %u bytes\n",
2201            s1->total_output[0],
2202            s1->total_output[1],
2203            s1->total_output[2],
2204            s1->total_output[3]
2205            );
2206 #ifdef MEM_DEBUG
2207     fprintf(stderr, "# memory usage");
2208 #ifdef TCC_IS_NATIVE
2209     if (s1->run_size) {
2210         Section *s = s1->symtab;
2211         unsigned ms = s->data_offset + s->link->data_offset + s->hash->data_offset;
2212         unsigned rs = s1->run_size;
2213         fprintf(stderr, ": %d to run, %d symbols, %d other,",
2214             rs, ms, mem_cur_size - rs - ms);
2215     }
2216 #endif
2217     fprintf(stderr, " %d max (bytes)\n", mem_max_size);
2218 #endif
2219 }
2220
2221 #if ONE_SOURCE
2222 # undef malloc
2223 # undef realloc
2224 # undef free
2225 #endif