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