libtcc.c

   1 /*
   2  *  TCC - Tiny C Compiler
   3  *
   4  *  Copyright (c) 2001-2004 Fabrice Bellard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include "tcc.h"
  22
  23 /********************************************************/
  24 /* global variables */
  25
  26 /* use GNU C extensions */
  27 ST_DATA int gnu_ext = 1;
  28
  29 /* use TinyCC extensions */
  30 ST_DATA int tcc_ext = 1;
  31
  32 /* XXX: get rid of this ASAP */
  33 ST_DATA struct TCCState *tcc_state;
  34
  35 static int nb_states;
  36
  37 /********************************************************/
  38
  39 #if ONE_SOURCE
  40 #include "tccpp.c"
  41 #include "tccgen.c"
  42 #include "tccelf.c"
  43 #include "tccrun.c"
  44 #ifdef TCC_TARGET_I386
  45 #include "i386-gen.c"
  46 #include "i386-link.c"
  47 #include "i386-asm.c"
  48 #elif defined(TCC_TARGET_ARM)
  49 #include "arm-gen.c"
  50 #include "arm-link.c"
  51 #include "arm-asm.c"
  52 #elif defined(TCC_TARGET_ARM64)
  53 #include "arm64-gen.c"
  54 #include "arm64-link.c"
  55 #elif defined(TCC_TARGET_C67)
  56 #include "c67-gen.c"
  57 #include "c67-link.c"
  58 #include "tcccoff.c"
  59 #elif defined(TCC_TARGET_X86_64)
  60 #include "x86_64-gen.c"
  61 #include "x86_64-link.c"
  62 #include "i386-asm.c"
  63 #elif defined(TCC_TARGET_RISCV64)
  64 #include "riscv64-gen.c"
  65 #include "riscv64-link.c"
  66 #else
  67 #error unknown target
  68 #endif
  69 #ifdef CONFIG_TCC_ASM
  70 #include "tccasm.c"
  71 #endif
  72 #ifdef TCC_TARGET_PE
  73 #include "tccpe.c"
  74 #endif
  75 #endif /* ONE_SOURCE */
  76
  77 /********************************************************/
  78 #ifndef CONFIG_TCC_ASM
  79 ST_FUNC void asm_instr(void)
  80 {
  81     tcc_error("inline asm() not supported");
  82 }
  83 ST_FUNC void asm_global_instr(void)
  84 {
  85     tcc_error("inline asm() not supported");
  86 }
  87 #endif
  88
  89 /********************************************************/
  90 #ifdef _WIN32
  91 ST_FUNC char *normalize_slashes(char *path)
  92 {
  93     char *p;
  94     for (p = path; *p; ++p)
  95         if (*p == '\\')
  96             *p = '/';
  97     return path;
  98 }
  99
 100 static HMODULE tcc_module;
 101
 102 /* on win32, we suppose the lib and includes are at the location of 'tcc.exe' */
 103 static void tcc_set_lib_path_w32(TCCState *s)
 104 {
 105     char path[1024], *p;
 106     GetModuleFileNameA(tcc_module, path, sizeof path);
 107     p = tcc_basename(normalize_slashes(strlwr(path)));
 108     if (p > path)
 109         --p;
 110     *p = 0;
 111     tcc_set_lib_path(s, path);
 112 }
 113
 114 #ifdef TCC_TARGET_PE
 115 static void tcc_add_systemdir(TCCState *s)
 116 {
 117     char buf[1000];
 118     GetSystemDirectory(buf, sizeof buf);
 119     tcc_add_library_path(s, normalize_slashes(buf));
 120 }
 121 #endif
 122
 123 #ifdef LIBTCC_AS_DLL
 124 BOOL WINAPI DllMain (HINSTANCE hDll, DWORD dwReason, LPVOID lpReserved)
 125 {
 126     if (DLL_PROCESS_ATTACH == dwReason)
 127         tcc_module = hDll;
 128     return TRUE;
 129 }
 130 #endif
 131 #endif
 132
 133 /********************************************************/
 134 /* copy a string and truncate it. */
 135 ST_FUNC char *pstrcpy(char *buf, int buf_size, const char *s)
 136 {
 137     char *q, *q_end;
 138     int c;
 139
 140     if (buf_size > 0) {
 141         q = buf;
 142         q_end = buf + buf_size - 1;
 143         while (q < q_end) {
 144             c = *s++;
 145             if (c == '\0')
 146                 break;
 147             *q++ = c;
 148         }
 149         *q = '\0';
 150     }
 151     return buf;
 152 }
 153
 154 /* strcat and truncate. */
 155 ST_FUNC char *pstrcat(char *buf, int buf_size, const char *s)
 156 {
 157     int len;
 158     len = strlen(buf);
 159     if (len < buf_size)
 160         pstrcpy(buf + len, buf_size - len, s);
 161     return buf;
 162 }
 163
 164 ST_FUNC char *pstrncpy(char *out, const char *in, size_t num)
 165 {
 166     memcpy(out, in, num);
 167     out[num] = '\0';
 168     return out;
 169 }
 170
 171 /* extract the basename of a file */
 172 PUB_FUNC char *tcc_basename(const char *name)
 173 {
 174     char *p = strchr(name, 0);
 175     while (p > name && !IS_DIRSEP(p[-1]))
 176         --p;
 177     return p;
 178 }
 179
 180 /* extract extension part of a file
 181  *
 182  * (if no extension, return pointer to end-of-string)
 183  */
 184 PUB_FUNC char *tcc_fileextension (const char *name)
 185 {
 186     char *b = tcc_basename(name);
 187     char *e = strrchr(b, '.');
 188     return e ? e : strchr(b, 0);
 189 }
 190
 191 /********************************************************/
 192 /* memory management */
 193
 194 #undef free
 195 #undef malloc
 196 #undef realloc
 197
 198 #ifndef MEM_DEBUG
 199
 200 PUB_FUNC void tcc_free(void *ptr)
 201 {
 202     free(ptr);
 203 }
 204
 205 PUB_FUNC void *tcc_malloc(unsigned long size)
 206 {
 207     void *ptr;
 208     ptr = malloc(size);
 209     if (!ptr && size)
 210         tcc_error("memory full (malloc)");
 211     return ptr;
 212 }
 213
 214 PUB_FUNC void *tcc_mallocz(unsigned long size)
 215 {
 216     void *ptr;
 217     ptr = tcc_malloc(size);
 218     memset(ptr, 0, size);
 219     return ptr;
 220 }
 221
 222 PUB_FUNC void *tcc_realloc(void *ptr, unsigned long size)
 223 {
 224     void *ptr1;
 225     ptr1 = realloc(ptr, size);
 226     if (!ptr1 && size)
 227         tcc_error("memory full (realloc)");
 228     return ptr1;
 229 }
 230
 231 PUB_FUNC char *tcc_strdup(const char *str)
 232 {
 233     char *ptr;
 234     ptr = tcc_malloc(strlen(str) + 1);
 235     strcpy(ptr, str);
 236     return ptr;
 237 }
 238
 239 PUB_FUNC void tcc_memcheck(void)
 240 {
 241 }
 242
 243 #else
 244
 245 #define MEM_DEBUG_MAGIC1 0xFEEDDEB1
 246 #define MEM_DEBUG_MAGIC2 0xFEEDDEB2
 247 #define MEM_DEBUG_MAGIC3 0xFEEDDEB3
 248 #define MEM_DEBUG_FILE_LEN 40
 249 #define MEM_DEBUG_CHECK3(header) \
 250     ((mem_debug_header_t*)((char*)header + header->size))->magic3
 251 #define MEM_USER_PTR(header) \
 252     ((char *)header + offsetof(mem_debug_header_t, magic3))
 253 #define MEM_HEADER_PTR(ptr) \
 254     (mem_debug_header_t *)((char*)ptr - offsetof(mem_debug_header_t, magic3))
 255
 256 struct mem_debug_header {
 257     unsigned magic1;
 258     unsigned size;
 259     struct mem_debug_header *prev;
 260     struct mem_debug_header *next;
 261     int line_num;
 262     char file_name[MEM_DEBUG_FILE_LEN + 1];
 263     unsigned magic2;
 264     ALIGNED(16) unsigned magic3;
 265 };
 266
 267 typedef struct mem_debug_header mem_debug_header_t;
 268
 269 static mem_debug_header_t *mem_debug_chain;
 270 static unsigned mem_cur_size;
 271 static unsigned mem_max_size;
 272
 273 static mem_debug_header_t *malloc_check(void *ptr, const char *msg)
 274 {
 275     mem_debug_header_t * header = MEM_HEADER_PTR(ptr);
 276     if (header->magic1 != MEM_DEBUG_MAGIC1 ||
 277         header->magic2 != MEM_DEBUG_MAGIC2 ||
 278         MEM_DEBUG_CHECK3(header) != MEM_DEBUG_MAGIC3 ||
 279         header->size == (unsigned)-1) {
 280         fprintf(stderr, "%s check failed\n", msg);
 281         if (header->magic1 == MEM_DEBUG_MAGIC1)
 282             fprintf(stderr, "%s:%u: block allocated here.\n",
 283                 header->file_name, header->line_num);
 284         exit(1);
 285     }
 286     return header;
 287 }
 288
 289 PUB_FUNC void *tcc_malloc_debug(unsigned long size, const char *file, int line)
 290 {
 291     int ofs;
 292     mem_debug_header_t *header;
 293
 294     header = malloc(sizeof(mem_debug_header_t) + size);
 295     if (!header)
 296         tcc_error("memory full (malloc)");
 297
 298     header->magic1 = MEM_DEBUG_MAGIC1;
 299     header->magic2 = MEM_DEBUG_MAGIC2;
 300     header->size = size;
 301     MEM_DEBUG_CHECK3(header) = MEM_DEBUG_MAGIC3;
 302     header->line_num = line;
 303     ofs = strlen(file) - MEM_DEBUG_FILE_LEN;
 304     strncpy(header->file_name, file + (ofs > 0 ? ofs : 0), MEM_DEBUG_FILE_LEN);
 305     header->file_name[MEM_DEBUG_FILE_LEN] = 0;
 306
 307     header->next = mem_debug_chain;
 308     header->prev = NULL;
 309     if (header->next)
 310         header->next->prev = header;
 311     mem_debug_chain = header;
 312
 313     mem_cur_size += size;
 314     if (mem_cur_size > mem_max_size)
 315         mem_max_size = mem_cur_size;
 316
 317     return MEM_USER_PTR(header);
 318 }
 319
 320 PUB_FUNC void tcc_free_debug(void *ptr)
 321 {
 322     mem_debug_header_t *header;
 323     if (!ptr)
 324         return;
 325     header = malloc_check(ptr, "tcc_free");
 326     mem_cur_size -= header->size;
 327     header->size = (unsigned)-1;
 328     if (header->next)
 329         header->next->prev = header->prev;
 330     if (header->prev)
 331         header->prev->next = header->next;
 332     if (header == mem_debug_chain)
 333         mem_debug_chain = header->next;
 334     free(header);
 335 }
 336
 337 PUB_FUNC void *tcc_mallocz_debug(unsigned long size, const char *file, int line)
 338 {
 339     void *ptr;
 340     ptr = tcc_malloc_debug(size,file,line);
 341     memset(ptr, 0, size);
 342     return ptr;
 343 }
 344
 345 PUB_FUNC void *tcc_realloc_debug(void *ptr, unsigned long size, const char *file, int line)
 346 {
 347     mem_debug_header_t *header;
 348     int mem_debug_chain_update = 0;
 349     if (!ptr)
 350         return tcc_malloc_debug(size, file, line);
 351     header = malloc_check(ptr, "tcc_realloc");
 352     mem_cur_size -= header->size;
 353     mem_debug_chain_update = (header == mem_debug_chain);
 354     header = realloc(header, sizeof(mem_debug_header_t) + size);
 355     if (!header)
 356         tcc_error("memory full (realloc)");
 357     header->size = size;
 358     MEM_DEBUG_CHECK3(header) = MEM_DEBUG_MAGIC3;
 359     if (header->next)
 360         header->next->prev = header;
 361     if (header->prev)
 362         header->prev->next = header;
 363     if (mem_debug_chain_update)
 364         mem_debug_chain = header;
 365     mem_cur_size += size;
 366     if (mem_cur_size > mem_max_size)
 367         mem_max_size = mem_cur_size;
 368     return MEM_USER_PTR(header);
 369 }
 370
 371 PUB_FUNC char *tcc_strdup_debug(const char *str, const char *file, int line)
 372 {
 373     char *ptr;
 374     ptr = tcc_malloc_debug(strlen(str) + 1, file, line);
 375     strcpy(ptr, str);
 376     return ptr;
 377 }
 378
 379 PUB_FUNC void tcc_memcheck(void)
 380 {
 381     if (mem_cur_size) {
 382         mem_debug_header_t *header = mem_debug_chain;
 383         fprintf(stderr, "MEM_DEBUG: mem_leak= %d bytes, mem_max_size= %d bytes\n",
 384             mem_cur_size, mem_max_size);
 385         while (header) {
 386             fprintf(stderr, "%s:%u: error: %u bytes leaked\n",
 387                 header->file_name, header->line_num, header->size);
 388             header = header->next;
 389         }
 390 #if MEM_DEBUG-0 == 2
 391         exit(2);
 392 #endif
 393     }
 394 }
 395 #endif /* MEM_DEBUG */
 396
 397 #define free(p) use_tcc_free(p)
 398 #define malloc(s) use_tcc_malloc(s)
 399 #define realloc(p, s) use_tcc_realloc(p, s)
 400
 401 /********************************************************/
 402 /* dynarrays */
 403
 404 ST_FUNC void dynarray_add(void *ptab, int *nb_ptr, void *data)
 405 {
 406     int nb, nb_alloc;
 407     void **pp;
 408
 409     nb = *nb_ptr;
 410     pp = *(void ***)ptab;
 411     /* every power of two we double array size */
 412     if ((nb & (nb - 1)) == 0) {
 413         if (!nb)
 414             nb_alloc = 1;
 415         else
 416             nb_alloc = nb * 2;
 417         pp = tcc_realloc(pp, nb_alloc * sizeof(void *));
 418         *(void***)ptab = pp;
 419     }
 420     pp[nb++] = data;
 421     *nb_ptr = nb;
 422 }
 423
 424 ST_FUNC void dynarray_reset(void *pp, int *n)
 425 {
 426     void **p;
 427     for (p = *(void***)pp; *n; ++p, --*n)
 428         if (*p)
 429             tcc_free(*p);
 430     tcc_free(*(void**)pp);
 431     *(void**)pp = NULL;
 432 }
 433
 434 static void tcc_split_path(TCCState *s, void *p_ary, int *p_nb_ary, const char *in)
 435 {
 436     const char *p;
 437     do {
 438         int c;
 439         CString str;
 440
 441         cstr_new(&str);
 442         for (p = in; c = *p, c != '\0' && c != PATHSEP[0]; ++p) {
 443             if (c == '{' && p[1] && p[2] == '}') {
 444                 c = p[1], p += 2;
 445                 if (c == 'B')
 446                     cstr_cat(&str, s->tcc_lib_path, -1);
 447             } else {
 448                 cstr_ccat(&str, c);
 449             }
 450         }
 451         if (str.size) {
 452             cstr_ccat(&str, '\0');
 453             dynarray_add(p_ary, p_nb_ary, tcc_strdup(str.data));
 454         }
 455         cstr_free(&str);
 456         in = p+1;
 457     } while (*p);
 458 }
 459
 460 /********************************************************/
 461
 462 static void strcat_vprintf(char *buf, int buf_size, const char *fmt, va_list ap)
 463 {
 464     int len;
 465     len = strlen(buf);
 466     vsnprintf(buf + len, buf_size - len, fmt, ap);
 467 }
 468
 469 static void strcat_printf(char *buf, int buf_size, const char *fmt, ...)
 470 {
 471     va_list ap;
 472     va_start(ap, fmt);
 473     strcat_vprintf(buf, buf_size, fmt, ap);
 474     va_end(ap);
 475 }
 476
 477 static void error1(TCCState *s1, int is_warning, const char *fmt, va_list ap)
 478 {
 479     char buf[2048];
 480     BufferedFile **pf, *f;
 481
 482     buf[0] = '\0';
 483     /* use upper file if inline ":asm:" or token ":paste:" */
 484     for (f = file; f && f->filename[0] == ':'; f = f->prev)
 485      ;
 486     if (f) {
 487         for(pf = s1->include_stack; pf < s1->include_stack_ptr; pf++)
 488             strcat_printf(buf, sizeof(buf), "In file included from %s:%d:\n",
 489                 (*pf)->filename, (*pf)->line_num);
 490         if (s1->error_set_jmp_enabled) {
 491             strcat_printf(buf, sizeof(buf), "%s:%d: ",
 492                 f->filename, f->line_num - !!(tok_flags & TOK_FLAG_BOL));
 493         } else {
 494             strcat_printf(buf, sizeof(buf), "%s: ",
 495                 f->filename);
 496         }
 497     } else {
 498         strcat_printf(buf, sizeof(buf), "tcc: ");
 499     }
 500     if (is_warning)
 501         strcat_printf(buf, sizeof(buf), "warning: ");
 502     else
 503         strcat_printf(buf, sizeof(buf), "error: ");
 504     strcat_vprintf(buf, sizeof(buf), fmt, ap);
 505
 506     if (!s1->error_func) {
 507         /* default case: stderr */
 508         if (s1->output_type == TCC_OUTPUT_PREPROCESS && s1->ppfp == stdout)
 509             /* print a newline during tcc -E */
 510             printf("\n"), fflush(stdout);
 511         fflush(stdout); /* flush -v output */
 512         fprintf(stderr, "%s\n", buf);
 513         fflush(stderr); /* print error/warning now (win32) */
 514     } else {
 515         s1->error_func(s1->error_opaque, buf);
 516     }
 517     if (!is_warning || s1->warn_error)
 518         s1->nb_errors++;
 519 }
 520
 521 LIBTCCAPI void tcc_set_error_func(TCCState *s, void *error_opaque,
 522                         void (*error_func)(void *opaque, const char *msg))
 523 {
 524     s->error_opaque = error_opaque;
 525     s->error_func = error_func;
 526 }
 527
 528 /* error without aborting current compilation */
 529 PUB_FUNC void tcc_error_noabort(const char *fmt, ...)
 530 {
 531     TCCState *s1 = tcc_state;
 532     va_list ap;
 533
 534     va_start(ap, fmt);
 535     error1(s1, 0, fmt, ap);
 536     va_end(ap);
 537 }
 538
 539 PUB_FUNC void tcc_error(const char *fmt, ...)
 540 {
 541     TCCState *s1 = tcc_state;
 542     va_list ap;
 543
 544     va_start(ap, fmt);
 545     error1(s1, 0, fmt, ap);
 546     va_end(ap);
 547     /* better than nothing: in some cases, we accept to handle errors */
 548     if (s1->error_set_jmp_enabled) {
 549         longjmp(s1->error_jmp_buf, 1);
 550     } else {
 551         /* XXX: eliminate this someday */
 552         exit(1);
 553     }
 554 }
 555
 556 PUB_FUNC void tcc_warning(const char *fmt, ...)
 557 {
 558     TCCState *s1 = tcc_state;
 559     va_list ap;
 560
 561     if (s1->warn_none)
 562         return;
 563
 564     va_start(ap, fmt);
 565     error1(s1, 1, fmt, ap);
 566     va_end(ap);
 567 }
 568
 569 /********************************************************/
 570 /* I/O layer */
 571
 572 ST_FUNC void tcc_open_bf(TCCState *s1, const char *filename, int initlen)
 573 {
 574     BufferedFile *bf;
 575     int buflen = initlen ? initlen : IO_BUF_SIZE;
 576
 577     bf = tcc_mallocz(sizeof(BufferedFile) + buflen);
 578     bf->buf_ptr = bf->buffer;
 579     bf->buf_end = bf->buffer + initlen;
 580     bf->buf_end[0] = CH_EOB; /* put eob symbol */
 581     pstrcpy(bf->filename, sizeof(bf->filename), filename);
 582     bf->true_filename = bf->filename;
 583     bf->line_num = 1;
 584     bf->ifdef_stack_ptr = s1->ifdef_stack_ptr;
 585     bf->fd = -1;
 586     bf->prev = file;
 587     file = bf;
 588     tok_flags = TOK_FLAG_BOL | TOK_FLAG_BOF;
 589 }
 590
 591 ST_FUNC void tcc_close(void)
 592 {
 593     BufferedFile *bf = file;
 594     if (bf->fd > 0) {
 595         close(bf->fd);
 596         total_lines += bf->line_num;
 597     }
 598     if (bf->true_filename != bf->filename)
 599         tcc_free(bf->true_filename);
 600     file = bf->prev;
 601     tcc_free(bf);
 602 }
 603
 604 ST_FUNC int tcc_open(TCCState *s1, const char *filename)
 605 {
 606     int fd;
 607     if (strcmp(filename, "-") == 0)
 608         fd = 0, filename = "<stdin>";
 609     else
 610         fd = open(filename, O_RDONLY | O_BINARY);
 611     if ((s1->verbose == 2 && fd >= 0) || s1->verbose == 3)
 612         printf("%s %*s%s\n", fd < 0 ? "nf":"->",
 613                (int)(s1->include_stack_ptr - s1->include_stack), "", filename);
 614     if (fd < 0)
 615         return -1;
 616     tcc_open_bf(s1, filename, 0);
 617 #ifdef _WIN32
 618     normalize_slashes(file->filename);
 619 #endif
 620     file->fd = fd;
 621     return fd;
 622 }
 623
 624 /* compile the file opened in 'file'. Return non zero if errors. */
 625 static int tcc_compile(TCCState *s1, int filetype)
 626 {
 627     Sym *define_start;
 628     int is_asm;
 629
 630     define_start = define_stack;
 631     is_asm = !!(filetype & (AFF_TYPE_ASM|AFF_TYPE_ASMPP));
 632     tccelf_begin_file(s1);
 633
 634     if (setjmp(s1->error_jmp_buf) == 0) {
 635         s1->nb_errors = 0;
 636         s1->error_set_jmp_enabled = 1;
 637
 638         preprocess_start(s1, is_asm);
 639         if (s1->output_type == TCC_OUTPUT_PREPROCESS) {
 640             tcc_preprocess(s1);
 641         } else if (is_asm) {
 642 #ifdef CONFIG_TCC_ASM
 643             tcc_assemble(s1, !!(filetype & AFF_TYPE_ASMPP));
 644 #else
 645             tcc_error_noabort("asm not supported");
 646 #endif
 647         } else {
 648             tccgen_compile(s1);
 649         }
 650     }
 651     s1->error_set_jmp_enabled = 0;
 652
 653     preprocess_end(s1);
 654     free_inline_functions(s1);
 655     /* reset define stack, but keep -D and built-ins */
 656     free_defines(define_start);
 657     sym_pop(&global_stack, NULL, 0);
 658     sym_pop(&local_stack, NULL, 0);
 659     tccelf_end_file(s1);
 660     return s1->nb_errors != 0 ? -1 : 0;
 661 }
 662
 663 LIBTCCAPI int tcc_compile_string(TCCState *s, const char *str)
 664 {
 665     int len, ret;
 666
 667     len = strlen(str);
 668     tcc_open_bf(s, "<string>", len);
 669     memcpy(file->buffer, str, len);
 670     ret = tcc_compile(s, s->filetype);
 671     tcc_close();
 672     return ret;
 673 }
 674
 675 /* define a preprocessor symbol. A value can also be provided with the '=' operator */
 676 LIBTCCAPI void tcc_define_symbol(TCCState *s1, const char *sym, const char *value)
 677 {
 678     int len1, len2;
 679     /* default value */
 680     if (!value)
 681         value = "1";
 682     len1 = strlen(sym);
 683     len2 = strlen(value);
 684
 685     /* init file structure */
 686     tcc_open_bf(s1, "<define>", len1 + len2 + 1);
 687     memcpy(file->buffer, sym, len1);
 688     file->buffer[len1] = ' ';
 689     memcpy(file->buffer + len1 + 1, value, len2);
 690
 691     /* parse with define parser */
 692     next_nomacro();
 693     parse_define();
 694     tcc_close();
 695 }
 696
 697 /* undefine a preprocessor symbol */
 698 LIBTCCAPI void tcc_undefine_symbol(TCCState *s1, const char *sym)
 699 {
 700     TokenSym *ts;
 701     Sym *s;
 702     ts = tok_alloc(sym, strlen(sym));
 703     s = define_find(ts->tok);
 704     if (s) {
 705         define_undef(s);
 706         tok_str_free_str(s->d);
 707         s->d = NULL;
 708     }
 709 }
 710
 711 /* cleanup all static data used during compilation */
 712 static void tcc_cleanup(void)
 713 {
 714     if (NULL == tcc_state)
 715         return;
 716     while (file)
 717         tcc_close();
 718     tccpp_delete(tcc_state);
 719     tcc_state = NULL;
 720     /* free sym_pools */
 721     dynarray_reset(&sym_pools, &nb_sym_pools);
 722     /* reset symbol stack */
 723     sym_free_first = NULL;
 724 }
 725
 726 LIBTCCAPI TCCState *tcc_new(void)
 727 {
 728     TCCState *s;
 729
 730     tcc_cleanup();
 731
 732     s = tcc_mallocz(sizeof(TCCState));
 733     if (!s)
 734         return NULL;
 735     tcc_state = s;
 736     ++nb_states;
 737
 738     s->nocommon = 1;
 739     s->dollars_in_identifiers = 1; /*on by default like in gcc/clang*/
 740     s->cversion = 199901; /* default unless -std=c11 is supplied */
 741     s->warn_implicit_function_declaration = 1;
 742     s->ms_extensions = 1;
 743
 744 #ifdef CHAR_IS_UNSIGNED
 745     s->char_is_unsigned = 1;
 746 #endif
 747 #ifdef TCC_TARGET_I386
 748     s->seg_size = 32;
 749 #endif
 750     /* enable this if you want symbols with leading underscore on windows: */
 751 #if 0 /* def TCC_TARGET_PE */
 752     s->leading_underscore = 1;
 753 #endif
 754 #ifdef _WIN32
 755     tcc_set_lib_path_w32(s);
 756 #else
 757     tcc_set_lib_path(s, CONFIG_TCCDIR);
 758 #endif
 759     tccelf_new(s);
 760     tccpp_new(s);
 761
 762     /* we add dummy defines for some special macros to speed up tests
 763        and to have working defined() */
 764     define_push(TOK___LINE__, MACRO_OBJ, NULL, NULL);
 765     define_push(TOK___FILE__, MACRO_OBJ, NULL, NULL);
 766     define_push(TOK___DATE__, MACRO_OBJ, NULL, NULL);
 767     define_push(TOK___TIME__, MACRO_OBJ, NULL, NULL);
 768     define_push(TOK___COUNTER__, MACRO_OBJ, NULL, NULL);
 769     {
 770         /* define __TINYC__ 92X  */
 771         char buffer[32]; int a,b,c;
 772         sscanf(TCC_VERSION, "%d.%d.%d", &a, &b, &c);
 773         sprintf(buffer, "%d", a*10000 + b*100 + c);
 774         tcc_define_symbol(s, "__TINYC__", buffer);
 775     }
 776
 777     /* standard defines */
 778     tcc_define_symbol(s, "__STDC__", NULL);
 779     tcc_define_symbol(s, "__STDC_VERSION__", "199901L");
 780     tcc_define_symbol(s, "__STDC_HOSTED__", NULL);
 781
 782     /* target defines */
 783 #if defined(TCC_TARGET_I386)
 784     tcc_define_symbol(s, "__i386__", NULL);
 785     tcc_define_symbol(s, "__i386", NULL);
 786     tcc_define_symbol(s, "i386", NULL);
 787 #elif defined(TCC_TARGET_X86_64)
 788     tcc_define_symbol(s, "__x86_64__", NULL);
 789 #elif defined(TCC_TARGET_ARM)
 790     tcc_define_symbol(s, "__ARM_ARCH_4__", NULL);
 791     tcc_define_symbol(s, "__arm_elf__", NULL);
 792     tcc_define_symbol(s, "__arm_elf", NULL);
 793     tcc_define_symbol(s, "arm_elf", NULL);
 794     tcc_define_symbol(s, "__arm__", NULL);
 795     tcc_define_symbol(s, "__arm", NULL);
 796     tcc_define_symbol(s, "arm", NULL);
 797     tcc_define_symbol(s, "__APCS_32__", NULL);
 798     tcc_define_symbol(s, "__ARMEL__", NULL);
 799 #if defined(TCC_ARM_EABI)
 800     tcc_define_symbol(s, "__ARM_EABI__", NULL);
 801 #endif
 802 #if defined(TCC_ARM_HARDFLOAT)
 803     s->float_abi = ARM_HARD_FLOAT;
 804     tcc_define_symbol(s, "__ARM_PCS_VFP", NULL);
 805 #else
 806     s->float_abi = ARM_SOFTFP_FLOAT;
 807 #endif
 808 #elif defined(TCC_TARGET_ARM64)
 809     tcc_define_symbol(s, "__aarch64__", NULL);
 810 #elif defined TCC_TARGET_C67
 811     tcc_define_symbol(s, "__C67__", NULL);
 812 #elif defined TCC_TARGET_RISCV64
 813     tcc_define_symbol(s, "__riscv", NULL);
 814     tcc_define_symbol(s, "__riscv_xlen", "64");
 815 #endif
 816
 817 #ifdef TCC_TARGET_PE
 818     tcc_define_symbol(s, "_WIN32", NULL);
 819 # ifdef TCC_TARGET_X86_64
 820     tcc_define_symbol(s, "_WIN64", NULL);
 821 # endif
 822 #else
 823     tcc_define_symbol(s, "__unix__", NULL);
 824     tcc_define_symbol(s, "__unix", NULL);
 825     tcc_define_symbol(s, "unix", NULL);
 826 # if defined(__linux__)
 827     tcc_define_symbol(s, "__linux__", NULL);
 828     tcc_define_symbol(s, "__linux", NULL);
 829 # endif
 830 # if defined(__FreeBSD__)
 831     tcc_define_symbol(s, "__FreeBSD__", "__FreeBSD__");
 832     /* No 'Thread Storage Local' on FreeBSD with tcc */
 833     tcc_define_symbol(s, "__NO_TLS", NULL);
 834 # endif
 835 # if defined(__FreeBSD_kernel__)
 836     tcc_define_symbol(s, "__FreeBSD_kernel__", NULL);
 837 # endif
 838 # if defined(__NetBSD__)
 839     tcc_define_symbol(s, "__NetBSD__", "__NetBSD__");
 840 # endif
 841 # if defined(__OpenBSD__)
 842     tcc_define_symbol(s, "__OpenBSD__", "__OpenBSD__");
 843 # endif
 844 #endif
 845
 846     /* TinyCC & gcc defines */
 847 #if PTR_SIZE == 4
 848     /* 32bit systems. */
 849     tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned int");
 850     tcc_define_symbol(s, "__PTRDIFF_TYPE__", "int");
 851     tcc_define_symbol(s, "__ILP32__", NULL);
 852 #elif LONG_SIZE == 4
 853     /* 64bit Windows. */
 854     tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned long long");
 855     tcc_define_symbol(s, "__PTRDIFF_TYPE__", "long long");
 856     tcc_define_symbol(s, "__LLP64__", NULL);
 857 #else
 858     /* Other 64bit systems. */
 859     tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned long");
 860     tcc_define_symbol(s, "__PTRDIFF_TYPE__", "long");
 861     tcc_define_symbol(s, "__LP64__", NULL);
 862 #endif
 863     tcc_define_symbol(s, "__SIZEOF_POINTER__", PTR_SIZE == 4 ? "4" : "8");
 864
 865 #ifdef TCC_TARGET_PE
 866     tcc_define_symbol(s, "__WCHAR_TYPE__", "unsigned short");
 867     tcc_define_symbol(s, "__WINT_TYPE__", "unsigned short");
 868 #else
 869     tcc_define_symbol(s, "__WCHAR_TYPE__", "int");
 870     /* wint_t is unsigned int by default, but (signed) int on BSDs
 871        and unsigned short on windows.  Other OSes might have still
 872        other conventions, sigh.  */
 873 # if defined(__FreeBSD__) || defined (__FreeBSD_kernel__) \
 874   || defined(__NetBSD__) || defined(__OpenBSD__)
 875     tcc_define_symbol(s, "__WINT_TYPE__", "int");
 876 #  ifdef __FreeBSD__
 877     /* define __GNUC__ to have some useful stuff from sys/cdefs.h
 878        that are unconditionally used in FreeBSDs other system headers :/ */
 879     tcc_define_symbol(s, "__GNUC__", "2");
 880     tcc_define_symbol(s, "__GNUC_MINOR__", "7");
 881     tcc_define_symbol(s, "__builtin_alloca", "alloca");
 882 #  endif
 883 # else
 884     tcc_define_symbol(s, "__WINT_TYPE__", "unsigned int");
 885     /* glibc defines */
 886     tcc_define_symbol(s, "__REDIRECT(name, proto, alias)",
 887         "name proto __asm__ (#alias)");
 888     tcc_define_symbol(s, "__REDIRECT_NTH(name, proto, alias)",
 889         "name proto __asm__ (#alias) __THROW");
 890 # endif
 891 # if defined(TCC_MUSL)
 892     tcc_define_symbol(s, "__DEFINED_va_list", "");
 893     tcc_define_symbol(s, "__DEFINED___isoc_va_list", "");
 894     tcc_define_symbol(s, "__isoc_va_list", "void *");
 895 # endif /* TCC_MUSL */
 896     /* Some GCC builtins that are simple to express as macros.  */
 897     tcc_define_symbol(s, "__builtin_extract_return_addr(x)", "x");
 898 #endif /* ndef TCC_TARGET_PE */
 899     return s;
 900 }
 901
 902 LIBTCCAPI void tcc_delete(TCCState *s1)
 903 {
 904     tcc_cleanup();
 905
 906     /* free sections */
 907     tccelf_delete(s1);
 908
 909     /* free library paths */
 910     dynarray_reset(&s1->library_paths, &s1->nb_library_paths);
 911     dynarray_reset(&s1->crt_paths, &s1->nb_crt_paths);
 912
 913     /* free include paths */
 914     dynarray_reset(&s1->cached_includes, &s1->nb_cached_includes);
 915     dynarray_reset(&s1->include_paths, &s1->nb_include_paths);
 916     dynarray_reset(&s1->sysinclude_paths, &s1->nb_sysinclude_paths);
 917     dynarray_reset(&s1->cmd_include_files, &s1->nb_cmd_include_files);
 918
 919     tcc_free(s1->tcc_lib_path);
 920     tcc_free(s1->soname);
 921     tcc_free(s1->rpath);
 922     tcc_free(s1->init_symbol);
 923     tcc_free(s1->fini_symbol);
 924     tcc_free(s1->outfile);
 925     tcc_free(s1->deps_outfile);
 926     dynarray_reset(&s1->files, &s1->nb_files);
 927     dynarray_reset(&s1->target_deps, &s1->nb_target_deps);
 928     dynarray_reset(&s1->pragma_libs, &s1->nb_pragma_libs);
 929     dynarray_reset(&s1->argv, &s1->argc);
 930
 931 #ifdef TCC_IS_NATIVE
 932     /* free runtime memory */
 933     tcc_run_free(s1);
 934 #endif
 935
 936     tcc_free(s1);
 937     if (0 == --nb_states)
 938         tcc_memcheck();
 939 }
 940
 941 LIBTCCAPI int tcc_set_output_type(TCCState *s, int output_type)
 942 {
 943     s->output_type = output_type;
 944
 945     /* always elf for objects */
 946     if (output_type == TCC_OUTPUT_OBJ)
 947         s->output_format = TCC_OUTPUT_FORMAT_ELF;
 948
 949     if (s->char_is_unsigned)
 950         tcc_define_symbol(s, "__CHAR_UNSIGNED__", NULL);
 951
 952     if (!s->nostdinc) {
 953         /* default include paths */
 954         /* -isystem paths have already been handled */
 955         tcc_add_sysinclude_path(s, CONFIG_TCC_SYSINCLUDEPATHS);
 956     }
 957
 958 #ifdef CONFIG_TCC_BCHECK
 959     if (s->do_bounds_check) {
 960         /* if bound checking, then add corresponding sections */
 961         tccelf_bounds_new(s);
 962         /* define symbol */
 963         tcc_define_symbol(s, "__BOUNDS_CHECKING_ON", NULL);
 964     }
 965 #endif
 966     if (s->do_debug) {
 967         /* add debug sections */
 968         tccelf_stab_new(s);
 969     }
 970
 971     tcc_add_library_path(s, CONFIG_TCC_LIBPATHS);
 972
 973 #ifdef TCC_TARGET_PE
 974 # ifdef _WIN32
 975     if (!s->nostdlib && output_type != TCC_OUTPUT_OBJ)
 976         tcc_add_systemdir(s);
 977 # endif
 978 #else
 979     /* paths for crt objects */
 980     tcc_split_path(s, &s->crt_paths, &s->nb_crt_paths, CONFIG_TCC_CRTPREFIX);
 981     /* add libc crt1/crti objects */
 982     if ((output_type == TCC_OUTPUT_EXE || output_type == TCC_OUTPUT_DLL) &&
 983         !s->nostdlib) {
 984         if (output_type != TCC_OUTPUT_DLL)
 985             tcc_add_crt(s, "crt1.o");
 986         tcc_add_crt(s, "crti.o");
 987     }
 988 #endif
 989     return 0;
 990 }
 991
 992 LIBTCCAPI int tcc_add_include_path(TCCState *s, const char *pathname)
 993 {
 994     tcc_split_path(s, &s->include_paths, &s->nb_include_paths, pathname);
 995     return 0;
 996 }
 997
 998 LIBTCCAPI int tcc_add_sysinclude_path(TCCState *s, const char *pathname)
 999 {
1000     tcc_split_path(s, &s->sysinclude_paths, &s->nb_sysinclude_paths, pathname);
1001     return 0;
1002 }
1003
1004 ST_FUNC int tcc_add_file_internal(TCCState *s1, const char *filename, int flags)
1005 {
1006     int ret;
1007
1008     /* open the file */
1009     ret = tcc_open(s1, filename);
1010     if (ret < 0) {
1011         if (flags & AFF_PRINT_ERROR)
1012             tcc_error_noabort("file '%s' not found", filename);
1013         return ret;
1014     }
1015
1016     /* update target deps */
1017     dynarray_add(&s1->target_deps, &s1->nb_target_deps,
1018             tcc_strdup(filename));
1019
1020     if (flags & AFF_TYPE_BIN) {
1021         ElfW(Ehdr) ehdr;
1022         int fd, obj_type;
1023
1024         fd = file->fd;
1025         obj_type = tcc_object_type(fd, &ehdr);
1026         lseek(fd, 0, SEEK_SET);
1027
1028 #ifdef TCC_TARGET_MACHO
1029         if (0 == obj_type && 0 == strcmp(tcc_fileextension(filename), ".dylib"))
1030             obj_type = AFF_BINTYPE_DYN;
1031 #endif
1032
1033         switch (obj_type) {
1034         case AFF_BINTYPE_REL:
1035             ret = tcc_load_object_file(s1, fd, 0);
1036             break;
1037 #ifndef TCC_TARGET_PE
1038         case AFF_BINTYPE_DYN:
1039             if (s1->output_type == TCC_OUTPUT_MEMORY) {
1040                 ret = 0;
1041 #ifdef TCC_IS_NATIVE
1042                 if (NULL == dlopen(filename, RTLD_GLOBAL | RTLD_LAZY))
1043                     ret = -1;
1044 #endif
1045             } else {
1046                 ret = tcc_load_dll(s1, fd, filename,
1047                                    (flags & AFF_REFERENCED_DLL) != 0);
1048             }
1049             break;
1050 #endif
1051         case AFF_BINTYPE_AR:
1052             ret = tcc_load_archive(s1, fd, !(flags & AFF_WHOLE_ARCHIVE));
1053             break;
1054 #ifdef TCC_TARGET_COFF
1055         case AFF_BINTYPE_C67:
1056             ret = tcc_load_coff(s1, fd);
1057             break;
1058 #endif
1059         default:
1060 #ifdef TCC_TARGET_PE
1061             ret = pe_load_file(s1, filename, fd);
1062 #else
1063             /* as GNU ld, consider it is an ld script if not recognized */
1064             ret = tcc_load_ldscript(s1);
1065 #endif
1066             if (ret < 0)
1067                 tcc_error_noabort("unrecognized file type");
1068             break;
1069         }
1070     } else {
1071         ret = tcc_compile(s1, flags);
1072     }
1073     tcc_close();
1074     return ret;
1075 }
1076
1077 LIBTCCAPI int tcc_add_file(TCCState *s, const char *filename)
1078 {
1079     int filetype = s->filetype;
1080     if (0 == (filetype & AFF_TYPE_MASK)) {
1081         /* use a file extension to detect a filetype */
1082         const char *ext = tcc_fileextension(filename);
1083         if (ext[0]) {
1084             ext++;
1085             if (!strcmp(ext, "S"))
1086                 filetype = AFF_TYPE_ASMPP;
1087             else if (!strcmp(ext, "s"))
1088                 filetype = AFF_TYPE_ASM;
1089             else if (!PATHCMP(ext, "c") || !PATHCMP(ext, "i"))
1090                 filetype = AFF_TYPE_C;
1091             else
1092                 filetype |= AFF_TYPE_BIN;
1093         } else {
1094             filetype = AFF_TYPE_C;
1095         }
1096     }
1097     return tcc_add_file_internal(s, filename, filetype | AFF_PRINT_ERROR);
1098 }
1099
1100 LIBTCCAPI int tcc_add_library_path(TCCState *s, const char *pathname)
1101 {
1102     tcc_split_path(s, &s->library_paths, &s->nb_library_paths, pathname);
1103     return 0;
1104 }
1105
1106 static int tcc_add_library_internal(TCCState *s, const char *fmt,
1107     const char *filename, int flags, char **paths, int nb_paths)
1108 {
1109     char buf[1024];
1110     int i;
1111
1112     for(i = 0; i < nb_paths; i++) {
1113         snprintf(buf, sizeof(buf), fmt, paths[i], filename);
1114         if (tcc_add_file_internal(s, buf, flags | AFF_TYPE_BIN) == 0)
1115             return 0;
1116     }
1117     return -1;
1118 }
1119
1120 /* find and load a dll. Return non zero if not found */
1121 /* XXX: add '-rpath' option support ? */
1122 ST_FUNC int tcc_add_dll(TCCState *s, const char *filename, int flags)
1123 {
1124     return tcc_add_library_internal(s, "%s/%s", filename, flags,
1125         s->library_paths, s->nb_library_paths);
1126 }
1127
1128 #ifndef TCC_TARGET_PE
1129 ST_FUNC int tcc_add_crt(TCCState *s, const char *filename)
1130 {
1131     if (-1 == tcc_add_library_internal(s, "%s/%s",
1132         filename, 0, s->crt_paths, s->nb_crt_paths))
1133         tcc_error_noabort("file '%s' not found", filename);
1134     return 0;
1135 }
1136 #endif
1137
1138 /* the library name is the same as the argument of the '-l' option */
1139 LIBTCCAPI int tcc_add_library(TCCState *s, const char *libraryname)
1140 {
1141 #if defined TCC_TARGET_PE
1142     const char *libs[] = { "%s/%s.def", "%s/lib%s.def", "%s/%s.dll", "%s/lib%s.dll", "%s/lib%s.a", NULL };
1143     const char **pp = s->static_link ? libs + 4 : libs;
1144 #elif defined TCC_TARGET_MACHO
1145     const char *libs[] = { "%s/lib%s.dylib", "%s/lib%s.a", NULL };
1146     const char **pp = s->static_link ? libs + 1 : libs;
1147 #else
1148     const char *libs[] = { "%s/lib%s.so", "%s/lib%s.a", NULL };
1149     const char **pp = s->static_link ? libs + 1 : libs;
1150 #endif
1151     int flags = s->filetype & AFF_WHOLE_ARCHIVE;
1152     while (*pp) {
1153         if (0 == tcc_add_library_internal(s, *pp,
1154             libraryname, flags, s->library_paths, s->nb_library_paths))
1155             return 0;
1156         ++pp;
1157     }
1158     return -1;
1159 }
1160
1161 PUB_FUNC int tcc_add_library_err(TCCState *s, const char *libname)
1162 {
1163     int ret = tcc_add_library(s, libname);
1164     if (ret < 0)
1165         tcc_error_noabort("library '%s' not found", libname);
1166     return ret;
1167 }
1168
1169 /* handle #pragma comment(lib,) */
1170 ST_FUNC void tcc_add_pragma_libs(TCCState *s1)
1171 {
1172     int i;
1173     for (i = 0; i < s1->nb_pragma_libs; i++)
1174         tcc_add_library_err(s1, s1->pragma_libs[i]);
1175 }
1176
1177 LIBTCCAPI int tcc_add_symbol(TCCState *s, const char *name, const void *val)
1178 {
1179 #ifdef TCC_TARGET_PE
1180     /* On x86_64 'val' might not be reachable with a 32bit offset.
1181        So it is handled here as if it were in a DLL. */
1182     pe_putimport(s, 0, name, (uintptr_t)val);
1183 #else
1184     set_elf_sym(symtab_section, (uintptr_t)val, 0,
1185         ELFW(ST_INFO)(STB_GLOBAL, STT_NOTYPE), 0,
1186         SHN_ABS, name);
1187 #endif
1188     return 0;
1189 }
1190
1191 LIBTCCAPI void tcc_set_lib_path(TCCState *s, const char *path)
1192 {
1193     tcc_free(s->tcc_lib_path);
1194     s->tcc_lib_path = tcc_strdup(path);
1195 }
1196
1197 #define WD_ALL    0x0001 /* warning is activated when using -Wall */
1198 #define FD_INVERT 0x0002 /* invert value before storing */
1199
1200 typedef struct FlagDef {
1201     uint16_t offset;
1202     uint16_t flags;
1203     const char *name;
1204 } FlagDef;
1205
1206 static int no_flag(const char **pp)
1207 {
1208     const char *p = *pp;
1209     if (*p != 'n' || *++p != 'o' || *++p != '-')
1210         return 0;
1211     *pp = p + 1;
1212     return 1;
1213 }
1214
1215 ST_FUNC int set_flag(TCCState *s, const FlagDef *flags, const char *name)
1216 {
1217     int value, ret;
1218     const FlagDef *p;
1219     const char *r;
1220
1221     value = 1;
1222     r = name;
1223     if (no_flag(&r))
1224         value = 0;
1225
1226     for (ret = -1, p = flags; p->name; ++p) {
1227         if (ret) {
1228             if (strcmp(r, p->name))
1229                 continue;
1230         } else {
1231             if (0 == (p->flags & WD_ALL))
1232                 continue;
1233         }
1234         if (p->offset) {
1235             *(int*)((char *)s + p->offset) =
1236                 p->flags & FD_INVERT ? !value : value;
1237             if (ret)
1238                 return 0;
1239         } else {
1240             ret = 0;
1241         }
1242     }
1243     return ret;
1244 }
1245
1246 static int strstart(const char *val, const char **str)
1247 {
1248     const char *p, *q;
1249     p = *str;
1250     q = val;
1251     while (*q) {
1252         if (*p != *q)
1253             return 0;
1254         p++;
1255         q++;
1256     }
1257     *str = p;
1258     return 1;
1259 }
1260
1261 /* Like strstart, but automatically takes into account that ld options can
1262  *
1263  * - start with double or single dash (e.g. '--soname' or '-soname')
1264  * - arguments can be given as separate or after '=' (e.g. '-Wl,-soname,x.so'
1265  *   or '-Wl,-soname=x.so')
1266  *
1267  * you provide `val` always in 'option[=]' form (no leading -)
1268  */
1269 static int link_option(const char *str, const char *val, const char **ptr)
1270 {
1271     const char *p, *q;
1272     int ret;
1273
1274     /* there should be 1 or 2 dashes */
1275     if (*str++ != '-')
1276         return 0;
1277     if (*str == '-')
1278         str++;
1279
1280     /* then str & val should match (potentially up to '=') */
1281     p = str;
1282     q = val;
1283
1284     ret = 1;
1285     if (q[0] == '?') {
1286         ++q;
1287         if (no_flag(&p))
1288             ret = -1;
1289     }
1290
1291     while (*q != '\0' && *q != '=') {
1292         if (*p != *q)
1293             return 0;
1294         p++;
1295         q++;
1296     }
1297
1298     /* '=' near eos means ',' or '=' is ok */
1299     if (*q == '=') {
1300         if (*p == 0)
1301             *ptr = p;
1302         if (*p != ',' && *p != '=')
1303             return 0;
1304         p++;
1305     } else if (*p) {
1306         return 0;
1307     }
1308     *ptr = p;
1309     return ret;
1310 }
1311
1312 static const char *skip_linker_arg(const char **str)
1313 {
1314     const char *s1 = *str;
1315     const char *s2 = strchr(s1, ',');
1316     *str = s2 ? s2++ : (s2 = s1 + strlen(s1));
1317     return s2;
1318 }
1319
1320 static void copy_linker_arg(char **pp, const char *s, int sep)
1321 {
1322     const char *q = s;
1323     char *p = *pp;
1324     int l = 0;
1325     if (p && sep)
1326         p[l = strlen(p)] = sep, ++l;
1327     skip_linker_arg(&q);
1328     pstrncpy(l + (*pp = tcc_realloc(p, q - s + l + 1)), s, q - s);
1329 }
1330
1331 /* set linker options */
1332 static int tcc_set_linker(TCCState *s, const char *option)
1333 {
1334     while (*option) {
1335
1336         const char *p = NULL;
1337         char *end = NULL;
1338         int ignoring = 0;
1339         int ret;
1340
1341         if (link_option(option, "Bsymbolic", &p)) {
1342             s->symbolic = 1;
1343         } else if (link_option(option, "nostdlib", &p)) {
1344             s->nostdlib = 1;
1345         } else if (link_option(option, "fini=", &p)) {
1346             copy_linker_arg(&s->fini_symbol, p, 0);
1347             ignoring = 1;
1348         } else if (link_option(option, "image-base=", &p)
1349                 || link_option(option, "Ttext=", &p)) {
1350             s->text_addr = strtoull(p, &end, 16);
1351             s->has_text_addr = 1;
1352         } else if (link_option(option, "init=", &p)) {
1353             copy_linker_arg(&s->init_symbol, p, 0);
1354             ignoring = 1;
1355         } else if (link_option(option, "oformat=", &p)) {
1356 #if defined(TCC_TARGET_PE)
1357             if (strstart("pe-", &p)) {
1358 #elif PTR_SIZE == 8
1359             if (strstart("elf64-", &p)) {
1360 #else
1361             if (strstart("elf32-", &p)) {
1362 #endif
1363                 s->output_format = TCC_OUTPUT_FORMAT_ELF;
1364             } else if (!strcmp(p, "binary")) {
1365                 s->output_format = TCC_OUTPUT_FORMAT_BINARY;
1366 #ifdef TCC_TARGET_COFF
1367             } else if (!strcmp(p, "coff")) {
1368                 s->output_format = TCC_OUTPUT_FORMAT_COFF;
1369 #endif
1370             } else
1371                 goto err;
1372
1373         } else if (link_option(option, "as-needed", &p)) {
1374             ignoring = 1;
1375         } else if (link_option(option, "O", &p)) {
1376             ignoring = 1;
1377         } else if (link_option(option, "export-all-symbols", &p)) {
1378             s->rdynamic = 1;
1379         } else if (link_option(option, "export-dynamic", &p)) {
1380             s->rdynamic = 1;
1381         } else if (link_option(option, "rpath=", &p)) {
1382             copy_linker_arg(&s->rpath, p, ':');
1383         } else if (link_option(option, "enable-new-dtags", &p)) {
1384             s->enable_new_dtags = 1;
1385         } else if (link_option(option, "section-alignment=", &p)) {
1386             s->section_align = strtoul(p, &end, 16);
1387         } else if (link_option(option, "soname=", &p)) {
1388             copy_linker_arg(&s->soname, p, 0);
1389 #ifdef TCC_TARGET_PE
1390         } else if (link_option(option, "large-address-aware", &p)) {
1391             s->pe_characteristics |= 0x20;
1392         } else if (link_option(option, "file-alignment=", &p)) {
1393             s->pe_file_align = strtoul(p, &end, 16);
1394         } else if (link_option(option, "stack=", &p)) {
1395             s->pe_stack_size = strtoul(p, &end, 10);
1396         } else if (link_option(option, "subsystem=", &p)) {
1397 #if defined(TCC_TARGET_I386) || defined(TCC_TARGET_X86_64)
1398             if (!strcmp(p, "native")) {
1399                 s->pe_subsystem = 1;
1400             } else if (!strcmp(p, "console")) {
1401                 s->pe_subsystem = 3;
1402             } else if (!strcmp(p, "gui") || !strcmp(p, "windows")) {
1403                 s->pe_subsystem = 2;
1404             } else if (!strcmp(p, "posix")) {
1405                 s->pe_subsystem = 7;
1406             } else if (!strcmp(p, "efiapp")) {
1407                 s->pe_subsystem = 10;
1408             } else if (!strcmp(p, "efiboot")) {
1409                 s->pe_subsystem = 11;
1410             } else if (!strcmp(p, "efiruntime")) {
1411                 s->pe_subsystem = 12;
1412             } else if (!strcmp(p, "efirom")) {
1413                 s->pe_subsystem = 13;
1414 #elif defined(TCC_TARGET_ARM)
1415             if (!strcmp(p, "wince")) {
1416                 s->pe_subsystem = 9;
1417 #endif
1418             } else
1419                 goto err;
1420 #endif
1421         } else if (ret = link_option(option, "?whole-archive", &p), ret) {
1422             if (ret > 0)
1423                 s->filetype |= AFF_WHOLE_ARCHIVE;
1424             else
1425                 s->filetype &= ~AFF_WHOLE_ARCHIVE;
1426         } else if (p) {
1427             return 0;
1428         } else {
1429     err:
1430             tcc_error("unsupported linker option '%s'", option);
1431         }
1432
1433         if (ignoring && s->warn_unsupported)
1434             tcc_warning("unsupported linker option '%s'", option);
1435
1436         option = skip_linker_arg(&p);
1437     }
1438     return 1;
1439 }
1440
1441 typedef struct TCCOption {
1442     const char *name;
1443     uint16_t index;
1444     uint16_t flags;
1445 } TCCOption;
1446
1447 enum {
1448     TCC_OPTION_HELP,
1449     TCC_OPTION_HELP2,
1450     TCC_OPTION_v,
1451     TCC_OPTION_I,
1452     TCC_OPTION_D,
1453     TCC_OPTION_U,
1454     TCC_OPTION_P,
1455     TCC_OPTION_L,
1456     TCC_OPTION_B,
1457     TCC_OPTION_l,
1458     TCC_OPTION_bench,
1459     TCC_OPTION_bt,
1460     TCC_OPTION_b,
1461     TCC_OPTION_g,
1462     TCC_OPTION_c,
1463     TCC_OPTION_dumpversion,
1464     TCC_OPTION_d,
1465     TCC_OPTION_static,
1466     TCC_OPTION_std,
1467     TCC_OPTION_shared,
1468     TCC_OPTION_soname,
1469     TCC_OPTION_o,
1470     TCC_OPTION_r,
1471     TCC_OPTION_s,
1472     TCC_OPTION_traditional,
1473     TCC_OPTION_Wl,
1474     TCC_OPTION_Wp,
1475     TCC_OPTION_W,
1476     TCC_OPTION_O,
1477     TCC_OPTION_mfloat_abi,
1478     TCC_OPTION_m,
1479     TCC_OPTION_f,
1480     TCC_OPTION_isystem,
1481     TCC_OPTION_iwithprefix,
1482     TCC_OPTION_include,
1483     TCC_OPTION_nostdinc,
1484     TCC_OPTION_nostdlib,
1485     TCC_OPTION_print_search_dirs,
1486     TCC_OPTION_rdynamic,
1487     TCC_OPTION_param,
1488     TCC_OPTION_pedantic,
1489     TCC_OPTION_pthread,
1490     TCC_OPTION_run,
1491     TCC_OPTION_w,
1492     TCC_OPTION_pipe,
1493     TCC_OPTION_E,
1494     TCC_OPTION_MD,
1495     TCC_OPTION_MF,
1496     TCC_OPTION_x,
1497     TCC_OPTION_ar,
1498     TCC_OPTION_impdef
1499 };
1500
1501 #define TCC_OPTION_HAS_ARG 0x0001
1502 #define TCC_OPTION_NOSEP   0x0002 /* cannot have space before option and arg */
1503
1504 static const TCCOption tcc_options[] = {
1505     { "h", TCC_OPTION_HELP, 0 },
1506     { "-help", TCC_OPTION_HELP, 0 },
1507     { "?", TCC_OPTION_HELP, 0 },
1508     { "hh", TCC_OPTION_HELP2, 0 },
1509     { "v", TCC_OPTION_v, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1510     { "I", TCC_OPTION_I, TCC_OPTION_HAS_ARG },
1511     { "D", TCC_OPTION_D, TCC_OPTION_HAS_ARG },
1512     { "U", TCC_OPTION_U, TCC_OPTION_HAS_ARG },
1513     { "P", TCC_OPTION_P, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1514     { "L", TCC_OPTION_L, TCC_OPTION_HAS_ARG },
1515     { "B", TCC_OPTION_B, TCC_OPTION_HAS_ARG },
1516     { "l", TCC_OPTION_l, TCC_OPTION_HAS_ARG },
1517     { "bench", TCC_OPTION_bench, 0 },
1518 #ifdef CONFIG_TCC_BACKTRACE
1519     { "bt", TCC_OPTION_bt, TCC_OPTION_HAS_ARG },
1520 #endif
1521 #ifdef CONFIG_TCC_BCHECK
1522     { "b", TCC_OPTION_b, 0 },
1523 #endif
1524     { "g", TCC_OPTION_g, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1525     { "c", TCC_OPTION_c, 0 },
1526     { "dumpversion", TCC_OPTION_dumpversion, 0},
1527     { "d", TCC_OPTION_d, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1528     { "static", TCC_OPTION_static, 0 },
1529     { "std", TCC_OPTION_std, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1530     { "shared", TCC_OPTION_shared, 0 },
1531     { "soname", TCC_OPTION_soname, TCC_OPTION_HAS_ARG },
1532     { "o", TCC_OPTION_o, TCC_OPTION_HAS_ARG },
1533     { "-param", TCC_OPTION_param, TCC_OPTION_HAS_ARG },
1534     { "pedantic", TCC_OPTION_pedantic, 0},
1535     { "pthread", TCC_OPTION_pthread, 0},
1536     { "run", TCC_OPTION_run, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1537     { "rdynamic", TCC_OPTION_rdynamic, 0 },
1538     { "r", TCC_OPTION_r, 0 },
1539     { "s", TCC_OPTION_s, 0 },
1540     { "traditional", TCC_OPTION_traditional, 0 },
1541     { "Wl,", TCC_OPTION_Wl, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1542     { "Wp,", TCC_OPTION_Wp, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1543     { "W", TCC_OPTION_W, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1544     { "O", TCC_OPTION_O, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1545 #ifdef TCC_TARGET_ARM
1546     { "mfloat-abi", TCC_OPTION_mfloat_abi, TCC_OPTION_HAS_ARG },
1547 #endif
1548     { "m", TCC_OPTION_m, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1549     { "f", TCC_OPTION_f, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
1550     { "isystem", TCC_OPTION_isystem, TCC_OPTION_HAS_ARG },
1551     { "include", TCC_OPTION_include, TCC_OPTION_HAS_ARG },
1552     { "nostdinc", TCC_OPTION_nostdinc, 0 },
1553     { "nostdlib", TCC_OPTION_nostdlib, 0 },
1554     { "print-search-dirs", TCC_OPTION_print_search_dirs, 0 },
1555     { "w", TCC_OPTION_w, 0 },
1556     { "pipe", TCC_OPTION_pipe, 0},
1557     { "E", TCC_OPTION_E, 0},
1558     { "MD", TCC_OPTION_MD, 0},
1559     { "MF", TCC_OPTION_MF, TCC_OPTION_HAS_ARG },
1560     { "x", TCC_OPTION_x, TCC_OPTION_HAS_ARG },
1561     { "ar", TCC_OPTION_ar, 0},
1562 #ifdef TCC_TARGET_PE
1563     { "impdef", TCC_OPTION_impdef, 0},
1564 #endif
1565     { NULL, 0, 0 },
1566 };
1567
1568 static const FlagDef options_W[] = {
1569     { 0, 0, "all" },
1570     { offsetof(TCCState, warn_unsupported), 0, "unsupported" },
1571     { offsetof(TCCState, warn_write_strings), 0, "write-strings" },
1572     { offsetof(TCCState, warn_error), 0, "error" },
1573     { offsetof(TCCState, warn_gcc_compat), 0, "gcc-compat" },
1574     { offsetof(TCCState, warn_implicit_function_declaration), WD_ALL,
1575       "implicit-function-declaration" },
1576     { 0, 0, NULL }
1577 };
1578
1579 static const FlagDef options_f[] = {
1580     { offsetof(TCCState, char_is_unsigned), 0, "unsigned-char" },
1581     { offsetof(TCCState, char_is_unsigned), FD_INVERT, "signed-char" },
1582     { offsetof(TCCState, nocommon), FD_INVERT, "common" },
1583     { offsetof(TCCState, leading_underscore), 0, "leading-underscore" },
1584     { offsetof(TCCState, ms_extensions), 0, "ms-extensions" },
1585     { offsetof(TCCState, dollars_in_identifiers), 0, "dollars-in-identifiers" },
1586     { 0, 0, NULL }
1587 };
1588
1589 static const FlagDef options_m[] = {
1590     { offsetof(TCCState, ms_bitfields), 0, "ms-bitfields" },
1591 #ifdef TCC_TARGET_X86_64
1592     { offsetof(TCCState, nosse), FD_INVERT, "sse" },
1593 #endif
1594     { 0, 0, NULL }
1595 };
1596
1597 static void parse_option_D(TCCState *s1, const char *optarg)
1598 {
1599     char *sym = tcc_strdup(optarg);
1600     char *value = strchr(sym, '=');
1601     if (value)
1602         *value++ = '\0';
1603     tcc_define_symbol(s1, sym, value);
1604     tcc_free(sym);
1605 }
1606
1607 static void args_parser_add_file(TCCState *s, const char* filename, int filetype)
1608 {
1609     struct filespec *f = tcc_malloc(sizeof *f + strlen(filename));
1610     f->type = filetype;
1611     strcpy(f->name, filename);
1612     dynarray_add(&s->files, &s->nb_files, f);
1613 }
1614
1615 static int args_parser_make_argv(const char *r, int *argc, char ***argv)
1616 {
1617     int ret = 0, q, c;
1618     CString str;
1619     for(;;) {
1620         while (c = (unsigned char)*r, c && c <= ' ')
1621           ++r;
1622         if (c == 0)
1623             break;
1624         q = 0;
1625         cstr_new(&str);
1626         while (c = (unsigned char)*r, c) {
1627             ++r;
1628             if (c == '\\' && (*r == '"' || *r == '\\')) {
1629                 c = *r++;
1630             } else if (c == '"') {
1631                 q = !q;
1632                 continue;
1633             } else if (q == 0 && c <= ' ') {
1634                 break;
1635             }
1636             cstr_ccat(&str, c);
1637         }
1638         cstr_ccat(&str, 0);
1639         //printf("<%s>\n", str.data), fflush(stdout);
1640         dynarray_add(argv, argc, tcc_strdup(str.data));
1641         cstr_free(&str);
1642         ++ret;
1643     }
1644     return ret;
1645 }
1646
1647 /* read list file */
1648 static void args_parser_listfile(TCCState *s,
1649     const char *filename, int optind, int *pargc, char ***pargv)
1650 {
1651     int fd, i;
1652     size_t len;
1653     char *p;
1654     int argc = 0;
1655     char **argv = NULL;
1656
1657     fd = open(filename, O_RDONLY | O_BINARY);
1658     if (fd < 0)
1659         tcc_error("listfile '%s' not found", filename);
1660
1661     len = lseek(fd, 0, SEEK_END);
1662     p = tcc_malloc(len + 1), p[len] = 0;
1663     lseek(fd, 0, SEEK_SET), read(fd, p, len), close(fd);
1664
1665     for (i = 0; i < *pargc; ++i)
1666         if (i == optind)
1667             args_parser_make_argv(p, &argc, &argv);
1668         else
1669             dynarray_add(&argv, &argc, tcc_strdup((*pargv)[i]));
1670
1671     tcc_free(p);
1672     dynarray_reset(&s->argv, &s->argc);
1673     *pargc = s->argc = argc, *pargv = s->argv = argv;
1674 }
1675
1676 PUB_FUNC int tcc_parse_args(TCCState *s, int *pargc, char ***pargv, int optind)
1677 {
1678     const TCCOption *popt;
1679     const char *optarg, *r;
1680     const char *run = NULL;
1681     int last_o = -1;
1682     int x;
1683     CString linker_arg; /* collect -Wl options */
1684     int tool = 0, arg_start = 0, noaction = optind;
1685     char **argv = *pargv;
1686     int argc = *pargc;
1687
1688     cstr_new(&linker_arg);
1689
1690     while (optind < argc) {
1691         r = argv[optind];
1692         if (r[0] == '@' && r[1] != '\0') {
1693             args_parser_listfile(s, r + 1, optind, &argc, &argv);
1694             continue;
1695         }
1696         optind++;
1697         if (tool) {
1698             if (r[0] == '-' && r[1] == 'v' && r[2] == 0)
1699                 ++s->verbose;
1700             continue;
1701         }
1702 reparse:
1703         if (r[0] != '-' || r[1] == '\0') {
1704             if (r[0] != '@') /* allow "tcc file(s) -run @ args ..." */
1705                 args_parser_add_file(s, r, s->filetype);
1706             if (run) {
1707                 tcc_set_options(s, run);
1708                 arg_start = optind - 1;
1709                 break;
1710             }
1711             continue;
1712         }
1713
1714         /* find option in table */
1715         for(popt = tcc_options; ; ++popt) {
1716             const char *p1 = popt->name;
1717             const char *r1 = r + 1;
1718             if (p1 == NULL)
1719                 tcc_error("invalid option -- '%s'", r);
1720             if (!strstart(p1, &r1))
1721                 continue;
1722             optarg = r1;
1723             if (popt->flags & TCC_OPTION_HAS_ARG) {
1724                 if (*r1 == '\0' && !(popt->flags & TCC_OPTION_NOSEP)) {
1725                     if (optind >= argc)
1726                 arg_err:
1727                         tcc_error("argument to '%s' is missing", r);
1728                     optarg = argv[optind++];
1729                 }
1730             } else if (*r1 != '\0')
1731                 continue;
1732             break;
1733         }
1734
1735         switch(popt->index) {
1736         case TCC_OPTION_HELP:
1737             return OPT_HELP;
1738         case TCC_OPTION_HELP2:
1739             return OPT_HELP2;
1740         case TCC_OPTION_I:
1741             tcc_add_include_path(s, optarg);
1742             break;
1743         case TCC_OPTION_D:
1744             parse_option_D(s, optarg);
1745             break;
1746         case TCC_OPTION_U:
1747             tcc_undefine_symbol(s, optarg);
1748             break;
1749         case TCC_OPTION_L:
1750             tcc_add_library_path(s, optarg);
1751             break;
1752         case TCC_OPTION_B:
1753             /* set tcc utilities path (mainly for tcc development) */
1754             tcc_set_lib_path(s, optarg);
1755             break;
1756         case TCC_OPTION_l:
1757             args_parser_add_file(s, optarg, AFF_TYPE_LIB | (s->filetype & ~AFF_TYPE_MASK));
1758             s->nb_libraries++;
1759             break;
1760         case TCC_OPTION_pthread:
1761             parse_option_D(s, "_REENTRANT");
1762             s->option_pthread = 1;
1763             break;
1764         case TCC_OPTION_bench:
1765             s->do_bench = 1;
1766             break;
1767 #ifdef CONFIG_TCC_BACKTRACE
1768         case TCC_OPTION_bt:
1769             tcc_set_num_callers(atoi(optarg));
1770             break;
1771 #endif
1772 #ifdef CONFIG_TCC_BCHECK
1773         case TCC_OPTION_b:
1774             s->do_bounds_check = 1;
1775             s->do_debug = 1;
1776             break;
1777 #endif
1778         case TCC_OPTION_g:
1779             s->do_debug = 1;
1780             break;
1781         case TCC_OPTION_c:
1782             x = TCC_OUTPUT_OBJ;
1783         set_output_type:
1784             if (s->output_type)
1785                 tcc_warning("-%s: overriding compiler action already specified", popt->name);
1786             s->output_type = x;
1787             break;
1788         case TCC_OPTION_d:
1789             if (*optarg == 'D')
1790                 s->dflag = 3;
1791             else if (*optarg == 'M')
1792                 s->dflag = 7;
1793             else if (*optarg == 't')
1794                 s->dflag = 16;
1795             else if (isnum(*optarg))
1796                 g_debug = atoi(optarg);
1797             else
1798                 goto unsupported_option;
1799             break;
1800         case TCC_OPTION_static:
1801             s->static_link = 1;
1802             break;
1803         case TCC_OPTION_std:
1804             if (*optarg == '=') {
1805                 if (strcmp(optarg, "=c11") == 0) {
1806                     tcc_undefine_symbol(s, "__STDC_VERSION__");
1807                     tcc_define_symbol(s, "__STDC_VERSION__", "201112L");
1808                     /*
1809                      * The integer constant 1, intended to indicate
1810                      * that the implementation does not support atomic
1811                      * types (including the _Atomic type qualiﬁer) and
1812                      * the <stdatomic.h> header.
1813                      */
1814                     tcc_define_symbol(s, "__STDC_NO_ATOMICS__", "1");
1815                     /*
1816                      * The integer constant 1, intended to indicate
1817                      * that the implementation does not support complex
1818                      * types or the <complex.h> header.
1819                      */
1820                     tcc_define_symbol(s, "__STDC_NO_COMPLEX__", "1");
1821                     /*
1822                      * The integer constant 1, intended to indicate
1823                      * that the implementation does not support the
1824                      * <threads.h> header.
1825                      */
1826                     tcc_define_symbol(s, "__STDC_NO_THREADS__", "1");
1827                     /*
1828                      * __STDC_NO_VLA__, tcc supports VLA.
1829                      * The integer constant 1, intended to indicate
1830                      * that the implementation does not support
1831                      * variable length arrays or variably modiﬁed
1832                      * types.
1833                      */
1834 #if !defined(TCC_TARGET_PE)
1835                     /*
1836                      * An integer constant of the form yyyymmL (for
1837                      * example, 199712L). If this symbol is deﬁned,
1838                      * then every character in the Unicode required
1839                      * set, when stored in an object of type
1840                      * wchar_t, has the same value as the short
1841                      * identiﬁer of that character.
1842                      */
1843                     #if 0
1844                     /* on Linux, this conflicts with a define introduced by
1845                      * /usr/include/stdc-predef.h included by glibc libs;
1846                      * clang doesn't define it at all so it's probably not necessary
1847                      */
1848                     tcc_define_symbol(s, "__STDC_ISO_10646__", "201605L");
1849                     #endif
1850                     /*
1851                      * The integer constant 1, intended to indicate
1852                      * that values of type char16_t are UTF−16
1853                      * encoded. If some other encoding is used, the
1854                      * macro shall not be deﬁned and the actual
1855                      * encoding used is implementation deﬁned.
1856                      */
1857                     tcc_define_symbol(s, "__STDC_UTF_16__", "1");
1858                     /*
1859                      * The integer constant 1, intended to indicate
1860                      * that values of type char32_t are UTF−32
1861                      * encoded. If some other encoding is used, the
1862                      * macro shall not be deﬁned and the actual
1863                      * encoding used is implementationdeﬁned.
1864                      */
1865                     tcc_define_symbol(s, "__STDC_UTF_32__", "1");
1866 #endif /* !TCC_TARGET_PE */
1867                     s->cversion = 201112;
1868                 }
1869             }
1870             /*
1871              * silently ignore other values, a current purpose:
1872              * allow to use a tcc as a reference compiler for "make test"
1873              */
1874             break;
1875         case TCC_OPTION_shared:
1876             x = TCC_OUTPUT_DLL;
1877             goto set_output_type;
1878         case TCC_OPTION_soname:
1879             s->soname = tcc_strdup(optarg);
1880             break;
1881         case TCC_OPTION_o:
1882             if (s->outfile) {
1883                 tcc_warning("multiple -o option");
1884                 tcc_free(s->outfile);
1885             }
1886             s->outfile = tcc_strdup(optarg);
1887             break;
1888         case TCC_OPTION_r:
1889             /* generate a .o merging several output files */
1890             s->option_r = 1;
1891             x = TCC_OUTPUT_OBJ;
1892             goto set_output_type;
1893         case TCC_OPTION_isystem:
1894             tcc_add_sysinclude_path(s, optarg);
1895             break;
1896         case TCC_OPTION_include:
1897             dynarray_add(&s->cmd_include_files,
1898                          &s->nb_cmd_include_files, tcc_strdup(optarg));
1899             break;
1900         case TCC_OPTION_nostdinc:
1901             s->nostdinc = 1;
1902             break;
1903         case TCC_OPTION_nostdlib:
1904             s->nostdlib = 1;
1905             break;
1906         case TCC_OPTION_run:
1907 #ifndef TCC_IS_NATIVE
1908             tcc_error("-run is not available in a cross compiler");
1909 #endif
1910             run = optarg;
1911             x = TCC_OUTPUT_MEMORY;
1912             goto set_output_type;
1913         case TCC_OPTION_v:
1914             do ++s->verbose; while (*optarg++ == 'v');
1915             ++noaction;
1916             break;
1917         case TCC_OPTION_f:
1918             if (set_flag(s, options_f, optarg) < 0)
1919                 goto unsupported_option;
1920             break;
1921 #ifdef TCC_TARGET_ARM
1922         case TCC_OPTION_mfloat_abi:
1923             /* tcc doesn't support soft float yet */
1924             if (!strcmp(optarg, "softfp")) {
1925                 s->float_abi = ARM_SOFTFP_FLOAT;
1926                 tcc_undefine_symbol(s, "__ARM_PCS_VFP");
1927             } else if (!strcmp(optarg, "hard"))
1928                 s->float_abi = ARM_HARD_FLOAT;
1929             else
1930                 tcc_error("unsupported float abi '%s'", optarg);
1931             break;
1932 #endif
1933         case TCC_OPTION_m:
1934             if (set_flag(s, options_m, optarg) < 0) {
1935                 if (x = atoi(optarg), x != 32 && x != 64)
1936                     goto unsupported_option;
1937                 if (PTR_SIZE != x/8)
1938                     return x;
1939                 ++noaction;
1940             }
1941             break;
1942         case TCC_OPTION_W:
1943             if (set_flag(s, options_W, optarg) < 0)
1944                 goto unsupported_option;
1945             break;
1946         case TCC_OPTION_w:
1947             s->warn_none = 1;
1948             break;
1949         case TCC_OPTION_rdynamic:
1950             s->rdynamic = 1;
1951             break;
1952         case TCC_OPTION_Wl:
1953             if (linker_arg.size)
1954                 --linker_arg.size, cstr_ccat(&linker_arg, ',');
1955             cstr_cat(&linker_arg, optarg, 0);
1956             if (tcc_set_linker(s, linker_arg.data))
1957                 cstr_free(&linker_arg);
1958             break;
1959         case TCC_OPTION_Wp:
1960             r = optarg;
1961             goto reparse;
1962         case TCC_OPTION_E:
1963             x = TCC_OUTPUT_PREPROCESS;
1964             goto set_output_type;
1965         case TCC_OPTION_P:
1966             s->Pflag = atoi(optarg) + 1;
1967             break;
1968         case TCC_OPTION_MD:
1969             s->gen_deps = 1;
1970             break;
1971         case TCC_OPTION_MF:
1972             s->deps_outfile = tcc_strdup(optarg);
1973             break;
1974         case TCC_OPTION_dumpversion:
1975             printf ("%s\n", TCC_VERSION);
1976             exit(0);
1977             break;
1978         case TCC_OPTION_x:
1979             x = 0;
1980             if (*optarg == 'c')
1981                 x = AFF_TYPE_C;
1982             else if (*optarg == 'a')
1983                 x = AFF_TYPE_ASMPP;
1984             else if (*optarg == 'b')
1985                 x = AFF_TYPE_BIN;
1986             else if (*optarg == 'n')
1987                 x = AFF_TYPE_NONE;
1988             else
1989                 tcc_warning("unsupported language '%s'", optarg);
1990             s->filetype = x | (s->filetype & ~AFF_TYPE_MASK);
1991             break;
1992         case TCC_OPTION_O:
1993             last_o = atoi(optarg);
1994             break;
1995         case TCC_OPTION_print_search_dirs:
1996             x = OPT_PRINT_DIRS;
1997             goto extra_action;
1998         case TCC_OPTION_impdef:
1999             x = OPT_IMPDEF;
2000             goto extra_action;
2001         case TCC_OPTION_ar:
2002             x = OPT_AR;
2003         extra_action:
2004             arg_start = optind - 1;
2005             if (arg_start != noaction)
2006                 tcc_error("cannot parse %s here", r);
2007             tool = x;
2008             break;
2009         case TCC_OPTION_traditional:
2010         case TCC_OPTION_pedantic:
2011         case TCC_OPTION_pipe:
2012         case TCC_OPTION_s:
2013             /* ignored */
2014             break;
2015         default:
2016 unsupported_option:
2017             if (s->warn_unsupported)
2018                 tcc_warning("unsupported option '%s'", r);
2019             break;
2020         }
2021     }
2022     if (last_o > 0)
2023         tcc_define_symbol(s, "__OPTIMIZE__", NULL);
2024     if (linker_arg.size) {
2025         r = linker_arg.data;
2026         goto arg_err;
2027     }
2028     *pargc = argc - arg_start;
2029     *pargv = argv + arg_start;
2030     if (tool)
2031         return tool;
2032     if (optind != noaction)
2033         return 0;
2034     if (s->verbose == 2)
2035         return OPT_PRINT_DIRS;
2036     if (s->verbose)
2037         return OPT_V;
2038     return OPT_HELP;
2039 }
2040
2041 LIBTCCAPI void tcc_set_options(TCCState *s, const char *r)
2042 {
2043     char **argv = NULL;
2044     int argc = 0;
2045     args_parser_make_argv(r, &argc, &argv);
2046     tcc_parse_args(s, &argc, &argv, 0);
2047     dynarray_reset(&argv, &argc);
2048 }
2049
2050 PUB_FUNC void tcc_print_stats(TCCState *s, unsigned total_time)
2051 {
2052     if (total_time < 1)
2053         total_time = 1;
2054     if (total_bytes < 1)
2055         total_bytes = 1;
2056     fprintf(stderr, "* %d idents, %d lines, %d bytes\n"
2057                     "* %0.3f s, %u lines/s, %0.1f MB/s\n",
2058            tok_ident - TOK_IDENT, total_lines, total_bytes,
2059            (double)total_time/1000,
2060            (unsigned)total_lines*1000/total_time,
2061            (double)total_bytes/1000/total_time);
2062 #ifdef MEM_DEBUG
2063     fprintf(stderr, "* %d bytes memory used\n", mem_max_size);
2064 #endif
2065 }