nsz Git - cparser/blob - main.c

   1 /*
   2  * This file is part of cparser.
   3  * Copyright (C) 2007-2009 Matthias Braun <matze@braunis.de>
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License
   7  * as published by the Free Software Foundation; either version 2
   8  * of the License, or (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  18  * 02111-1307, USA.
  19  */
  20 #include <config.h>
  21
  22 #define _GNU_SOURCE
  23
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26 #include <stdbool.h>
  27 #include <errno.h>
  28 #include <string.h>
  29 #include <assert.h>
  30
  31 #ifdef _WIN32
  32
  33 #include <fcntl.h>
  34 #include <io.h>
  35
  36 /* no eXecute on Win32 */
  37 #define X_OK 0
  38 #define W_OK 2
  39 #define R_OK 4
  40
  41 #define O_RDWR          _O_RDWR
  42 #define O_CREAT         _O_CREAT
  43 #define O_EXCL          _O_EXCL
  44 #define O_BINARY        _O_BINARY
  45
  46 /* remap some names, we are not in the POSIX world */
  47 #define access(fname, mode)      _access(fname, mode)
  48 #define mktemp(tmpl)             _mktemp(tmpl)
  49 #define open(fname, oflag, mode) _open(fname, oflag, mode)
  50 #define fdopen(fd, mode)         _fdopen(fd, mode)
  51 #define popen(cmd, mode)         _popen(cmd, mode)
  52 #define pclose(file)             _pclose(file)
  53 #define unlink(filename)         _unlink(filename)
  54
  55 #else
  56 #include <unistd.h>
  57 #define HAVE_MKSTEMP
  58 #endif
  59
  60 #include <libfirm/firm.h>
  61 #include <libfirm/be.h>
  62
  63 #include "lexer.h"
  64 #include "token_t.h"
  65 #include "types.h"
  66 #include "type_hash.h"
  67 #include "parser.h"
  68 #include "type_t.h"
  69 #include "ast2firm.h"
  70 #include "diagnostic.h"
  71 #include "lang_features.h"
  72 #include "driver/firm_opt.h"
  73 #include "driver/firm_cmdline.h"
  74 #include "driver/firm_timing.h"
  75 #include "driver/firm_os.h"
  76 #include "adt/error.h"
  77 #include "adt/strutil.h"
  78 #include "wrappergen/write_fluffy.h"
  79 #include "wrappergen/write_jna.h"
  80 #include "revision.h"
  81 #include "warning.h"
  82 #include "mangle.h"
  83 #include "printer.h"
  84
  85 #ifndef PREPROCESSOR
  86 #ifndef __WIN32__
  87 #define PREPROCESSOR "gcc -E -U__STRICT_ANSI__"
  88 #else
  89 #define PREPROCESSOR "cpp -U__STRICT_ANSI__"
  90 #endif
  91 #endif
  92
  93 #ifndef LINKER
  94 #define LINKER    "gcc"
  95 #endif
  96
  97 #ifndef ASSEMBLER
  98 #define ASSEMBLER "gcc -c -xassembler"
  99 #endif
 100
 101 unsigned int       c_mode                    = _C89 | _ANSI | _C99 | _GNUC;
 102 unsigned int       machine_size              = 32;
 103 bool               byte_order_big_endian     = false;
 104 bool               char_is_signed            = true;
 105 bool               strict_mode               = false;
 106 bool               use_builtins              = false;
 107 atomic_type_kind_t wchar_atomic_kind         = ATOMIC_TYPE_INT;
 108 unsigned           force_long_double_size    = 0;
 109 bool               enable_main_collect2_hack = false;
 110 bool               freestanding              = false;
 111
 112 /* to switch on printing of implicit casts */
 113 extern bool print_implicit_casts;
 114
 115 /* to switch on printing of parenthesis to indicate operator precedence */
 116 extern bool print_parenthesis;
 117
 118 static machine_triple_t *target_machine;
 119 static const char       *target_triple;
 120 static int               verbose;
 121 static struct obstack    cppflags_obst;
 122 static struct obstack    ldflags_obst;
 123 static struct obstack    asflags_obst;
 124 static char              dep_target[1024];
 125 static const char       *outname;
 126
 127 typedef enum lang_standard_t {
 128         STANDARD_DEFAULT, /* gnu99 (for C, GCC does gnu89) or gnu++98 (for C++) */
 129         STANDARD_ANSI,    /* c89 (for C) or c++98 (for C++) */
 130         STANDARD_C89,     /* ISO C90 (sic) */
 131         STANDARD_C90,     /* ISO C90 as modified in amendment 1 */
 132         STANDARD_C99,     /* ISO C99 */
 133         STANDARD_GNU89,   /* ISO C90 plus GNU extensions (including some C99) */
 134         STANDARD_GNU99,   /* ISO C99 plus GNU extensions */
 135         STANDARD_CXX98,   /* ISO C++ 1998 plus amendments */
 136         STANDARD_GNUXX98  /* ISO C++ 1998 plus amendments and GNU extensions */
 137 } lang_standard_t;
 138
 139 static lang_standard_t standard;
 140
 141 typedef struct file_list_entry_t file_list_entry_t;
 142
 143 typedef enum filetype_t {
 144         FILETYPE_AUTODETECT,
 145         FILETYPE_C,
 146         FILETYPE_PREPROCESSED_C,
 147         FILETYPE_CXX,
 148         FILETYPE_PREPROCESSED_CXX,
 149         FILETYPE_ASSEMBLER,
 150         FILETYPE_PREPROCESSED_ASSEMBLER,
 151         FILETYPE_OBJECT,
 152         FILETYPE_IR,
 153         FILETYPE_UNKNOWN
 154 } filetype_t;
 155
 156 struct file_list_entry_t {
 157         const char  *name; /**< filename or NULL for stdin */
 158         filetype_t   type;
 159         file_list_entry_t *next;
 160 };
 161
 162 static file_list_entry_t *temp_files;
 163
 164 static void initialize_firm(void)
 165 {
 166         firm_early_init();
 167 }
 168
 169 static void get_output_name(char *buf, size_t buflen, const char *inputname,
 170                             const char *newext)
 171 {
 172         if (inputname == NULL)
 173                 inputname = "a";
 174
 175         char const *const last_slash = strrchr(inputname, '/');
 176         char const *const filename   =
 177                 last_slash != NULL ? last_slash + 1 : inputname;
 178         char const *const last_dot   = strrchr(filename, '.');
 179         char const *const name_end   =
 180                 last_dot != NULL ? last_dot : strchr(filename, '\0');
 181
 182         int const len = snprintf(buf, buflen, "%.*s%s",
 183                         (int)(name_end - filename), filename, newext);
 184 #ifdef _WIN32
 185         if (len < 0 || buflen <= (size_t)len)
 186 #else
 187         if (buflen <= (size_t)len)
 188 #endif
 189                 panic("filename too long");
 190 }
 191
 192 #include "gen_builtins.h"
 193
 194 static translation_unit_t *do_parsing(FILE *const in, const char *const input_name)
 195 {
 196         start_parsing();
 197
 198         if (use_builtins) {
 199                 lexer_open_buffer(builtins, sizeof(builtins)-1, "<builtin>");
 200                 parse();
 201         }
 202
 203         lexer_open_stream(in, input_name);
 204         parse();
 205
 206         translation_unit_t *unit = finish_parsing();
 207         return unit;
 208 }
 209
 210 static void lextest(FILE *in, const char *fname)
 211 {
 212         lexer_open_stream(in, fname);
 213
 214         do {
 215                 lexer_next_preprocessing_token();
 216                 print_token(stdout, &lexer_token);
 217                 putchar('\n');
 218         } while (lexer_token.type != T_EOF);
 219 }
 220
 221 static void add_flag(struct obstack *obst, const char *format, ...)
 222 {
 223         char buf[65536];
 224         va_list ap;
 225
 226         va_start(ap, format);
 227 #ifdef _WIN32
 228         int len =
 229 #endif
 230                 vsnprintf(buf, sizeof(buf), format, ap);
 231         va_end(ap);
 232
 233         obstack_1grow(obst, ' ');
 234 #ifdef _WIN32
 235         obstack_1grow(obst, '"');
 236         obstack_grow(obst, buf, len);
 237         obstack_1grow(obst, '"');
 238 #else
 239         /* escape stuff... */
 240         for (char *c = buf; *c != '\0'; ++c) {
 241                 switch(*c) {
 242                 case ' ':
 243                 case '"':
 244                 case '$':
 245                 case '&':
 246                 case '(':
 247                 case ')':
 248                 case ';':
 249                 case '<':
 250                 case '>':
 251                 case '\'':
 252                 case '\\':
 253                 case '\n':
 254                 case '\r':
 255                 case '\t':
 256                 case '`':
 257                 case '|':
 258                         obstack_1grow(obst, '\\');
 259                         /* FALLTHROUGH */
 260                 default:
 261                         obstack_1grow(obst, *c);
 262                         break;
 263                 }
 264         }
 265 #endif
 266 }
 267
 268 static const char *type_to_string(type_t *type)
 269 {
 270         assert(type->kind == TYPE_ATOMIC);
 271         return get_atomic_kind_name(type->atomic.akind);
 272 }
 273
 274 static FILE *preprocess(const char *fname, filetype_t filetype)
 275 {
 276         static const char *common_flags = NULL;
 277
 278         if (common_flags == NULL) {
 279                 obstack_1grow(&cppflags_obst, '\0');
 280                 const char *flags = obstack_finish(&cppflags_obst);
 281
 282                 /* setup default defines */
 283                 add_flag(&cppflags_obst, "-U__WCHAR_TYPE__");
 284                 add_flag(&cppflags_obst, "-D__WCHAR_TYPE__=%s", type_to_string(type_wchar_t));
 285                 add_flag(&cppflags_obst, "-U__SIZE_TYPE__");
 286                 add_flag(&cppflags_obst, "-D__SIZE_TYPE__=%s", type_to_string(type_size_t));
 287
 288                 add_flag(&cppflags_obst, "-U__VERSION__");
 289                 add_flag(&cppflags_obst, "-D__VERSION__=\"%s\"", cparser_REVISION);
 290
 291                 if (flags[0] != '\0') {
 292                         size_t len = strlen(flags);
 293                         obstack_1grow(&cppflags_obst, ' ');
 294                         obstack_grow(&cppflags_obst, flags, len);
 295                 }
 296                 obstack_1grow(&cppflags_obst, '\0');
 297                 common_flags = obstack_finish(&cppflags_obst);
 298         }
 299
 300         assert(obstack_object_size(&cppflags_obst) == 0);
 301
 302         const char *preprocessor = getenv("CPARSER_PP");
 303         if (preprocessor != NULL) {
 304                 obstack_printf(&cppflags_obst, "%s ", preprocessor);
 305         } else {
 306                 if (target_triple != NULL)
 307                         obstack_printf(&cppflags_obst, "%s-", target_triple);
 308                 obstack_printf(&cppflags_obst, PREPROCESSOR);
 309         }
 310
 311         switch (filetype) {
 312         case FILETYPE_C:
 313                 add_flag(&cppflags_obst, "-std=c99");
 314                 break;
 315         case FILETYPE_CXX:
 316                 add_flag(&cppflags_obst, "-std=c++98");
 317                 break;
 318         case FILETYPE_ASSEMBLER:
 319                 add_flag(&cppflags_obst, "-x");
 320                 add_flag(&cppflags_obst, "assembler-with-cpp");
 321                 break;
 322         default:
 323                 break;
 324         }
 325         obstack_printf(&cppflags_obst, "%s", common_flags);
 326
 327         /* handle dependency generation */
 328         if (dep_target[0] != '\0') {
 329                 add_flag(&cppflags_obst, "-MF");
 330                 add_flag(&cppflags_obst, dep_target);
 331                 if (outname != NULL) {
 332                                 add_flag(&cppflags_obst, "-MQ");
 333                                 add_flag(&cppflags_obst, outname);
 334                 }
 335         }
 336         add_flag(&cppflags_obst, fname);
 337         obstack_1grow(&cppflags_obst, '\0');
 338
 339         char *commandline = obstack_finish(&cppflags_obst);
 340         if (verbose) {
 341                 puts(commandline);
 342         }
 343         FILE *f = popen(commandline, "r");
 344         if (f == NULL) {
 345                 fprintf(stderr, "invoking preprocessor failed\n");
 346                 exit(EXIT_FAILURE);
 347         }
 348         /* we don't really need that anymore */
 349         obstack_free(&cppflags_obst, commandline);
 350
 351         return f;
 352 }
 353
 354 static void assemble(const char *out, const char *in)
 355 {
 356         obstack_1grow(&asflags_obst, '\0');
 357         const char *flags = obstack_finish(&asflags_obst);
 358
 359         const char *assembler = getenv("CPARSER_AS");
 360         if (assembler != NULL) {
 361                 obstack_printf(&asflags_obst, "%s", assembler);
 362         } else {
 363                 if (target_triple != NULL)
 364                         obstack_printf(&asflags_obst, "%s-", target_triple);
 365                 obstack_printf(&asflags_obst, "%s", ASSEMBLER);
 366         }
 367         if (flags[0] != '\0')
 368                 obstack_printf(&asflags_obst, " %s", flags);
 369
 370         obstack_printf(&asflags_obst, " %s -o %s", in, out);
 371         obstack_1grow(&asflags_obst, '\0');
 372
 373         char *commandline = obstack_finish(&asflags_obst);
 374         if (verbose) {
 375                 puts(commandline);
 376         }
 377         int err = system(commandline);
 378         if (err != EXIT_SUCCESS) {
 379                 fprintf(stderr, "assembler reported an error\n");
 380                 exit(EXIT_FAILURE);
 381         }
 382         obstack_free(&asflags_obst, commandline);
 383 }
 384
 385 static void print_file_name(const char *file)
 386 {
 387         add_flag(&ldflags_obst, "-print-file-name=%s", file);
 388
 389         obstack_1grow(&ldflags_obst, '\0');
 390         const char *flags = obstack_finish(&ldflags_obst);
 391
 392         /* construct commandline */
 393         const char *linker = getenv("CPARSER_LINK");
 394         if (linker != NULL) {
 395                 obstack_printf(&ldflags_obst, "%s ", linker);
 396         } else {
 397                 if (target_triple != NULL)
 398                         obstack_printf(&ldflags_obst, "%s-", target_triple);
 399                 obstack_printf(&ldflags_obst, "%s ", LINKER);
 400         }
 401         obstack_printf(&ldflags_obst, "%s ", linker);
 402         obstack_printf(&ldflags_obst, "%s", flags);
 403         obstack_1grow(&ldflags_obst, '\0');
 404
 405         char *commandline = obstack_finish(&ldflags_obst);
 406         if (verbose) {
 407                 puts(commandline);
 408         }
 409         int err = system(commandline);
 410         if (err != EXIT_SUCCESS) {
 411                 fprintf(stderr, "linker reported an error\n");
 412                 exit(EXIT_FAILURE);
 413         }
 414         obstack_free(&ldflags_obst, commandline);
 415 }
 416
 417 static const char *try_dir(const char *dir)
 418 {
 419         if (dir == NULL)
 420                 return dir;
 421         if (access(dir, R_OK | W_OK | X_OK) == 0)
 422                 return dir;
 423         return NULL;
 424 }
 425
 426 static const char *get_tempdir(void)
 427 {
 428         static const char *tmpdir = NULL;
 429
 430         if (tmpdir != NULL)
 431                 return tmpdir;
 432
 433         if (tmpdir == NULL)
 434                 tmpdir = try_dir(getenv("TMPDIR"));
 435         if (tmpdir == NULL)
 436                 tmpdir = try_dir(getenv("TMP"));
 437         if (tmpdir == NULL)
 438                 tmpdir = try_dir(getenv("TEMP"));
 439
 440 #ifdef P_tmpdir
 441         if (tmpdir == NULL)
 442                 tmpdir = try_dir(P_tmpdir);
 443 #endif
 444
 445         if (tmpdir == NULL)
 446                 tmpdir = try_dir("/var/tmp");
 447         if (tmpdir == NULL)
 448                 tmpdir = try_dir("/usr/tmp");
 449         if (tmpdir == NULL)
 450                 tmpdir = try_dir("/tmp");
 451
 452         if (tmpdir == NULL)
 453                 tmpdir = ".";
 454
 455         return tmpdir;
 456 }
 457
 458 #ifndef HAVE_MKSTEMP
 459 /* cheap and nasty mkstemp replacement */
 460 static int mkstemp(char *templ)
 461 {
 462         mktemp(templ);
 463         return open(templ, O_RDWR|O_CREAT|O_EXCL|O_BINARY, 0600);
 464 }
 465 #endif
 466
 467 /**
 468  * an own version of tmpnam, which: writes in a buffer, emits no warnings
 469  * during linking (like glibc/gnu ld do for tmpnam)...
 470  */
 471 static FILE *make_temp_file(char *buffer, size_t buflen, const char *prefix)
 472 {
 473         const char *tempdir = get_tempdir();
 474
 475         snprintf(buffer, buflen, "%s/%sXXXXXX", tempdir, prefix);
 476
 477         int fd = mkstemp(buffer);
 478         if (fd == -1) {
 479                 fprintf(stderr, "couldn't create temporary file: %s\n",
 480                         strerror(errno));
 481                 exit(EXIT_FAILURE);
 482         }
 483         FILE *out = fdopen(fd, "w");
 484         if (out == NULL) {
 485                 fprintf(stderr, "couldn't create temporary file FILE*\n");
 486                 exit(EXIT_FAILURE);
 487         }
 488
 489         file_list_entry_t *entry = xmalloc(sizeof(*entry));
 490         memset(entry, 0, sizeof(*entry));
 491
 492         size_t  name_len = strlen(buffer) + 1;
 493         char   *name     = malloc(name_len);
 494         memcpy(name, buffer, name_len);
 495         entry->name      = name;
 496
 497         entry->next = temp_files;
 498         temp_files  = entry;
 499
 500         return out;
 501 }
 502
 503 static void free_temp_files(void)
 504 {
 505         file_list_entry_t *entry = temp_files;
 506         file_list_entry_t *next;
 507         for ( ; entry != NULL; entry = next) {
 508                 next = entry->next;
 509
 510                 unlink(entry->name);
 511                 free((char*) entry->name);
 512                 free(entry);
 513         }
 514         temp_files = NULL;
 515 }
 516
 517 typedef enum compile_mode_t {
 518         BenchmarkParser,
 519         PreprocessOnly,
 520         ParseOnly,
 521         Compile,
 522         CompileDump,
 523         CompileExportIR,
 524         CompileAssemble,
 525         CompileAssembleLink,
 526         LexTest,
 527         PrintAst,
 528         PrintFluffy,
 529         PrintJna
 530 } compile_mode_t;
 531
 532 static void usage(const char *argv0)
 533 {
 534         fprintf(stderr, "Usage %s [options] input [-o output]\n", argv0);
 535 }
 536
 537 static void print_cparser_version(void)
 538 {
 539         printf("cparser (%s) using libFirm (%u.%u",
 540                cparser_REVISION, ir_get_version_major(),
 541                ir_get_version_minor());
 542
 543         const char *revision = ir_get_version_revision();
 544         if (revision[0] != 0) {
 545                 putchar(' ');
 546                 fputs(revision, stdout);
 547         }
 548
 549         const char *build = ir_get_version_build();
 550         if (build[0] != 0) {
 551                 putchar(' ');
 552                 fputs(build, stdout);
 553         }
 554         puts(")");
 555         puts("This is free software; see the source for copying conditions.  There is NO\n"
 556              "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n");
 557 }
 558
 559 static void print_help(const char *argv0)
 560 {
 561         usage(argv0);
 562         puts("");
 563         puts("\t-fhelp     Display help about firm optimisation options");
 564         puts("\t-bhelp     Display help about firm backend options");
 565         puts("A big number of gcc flags is also supported");
 566 }
 567
 568 static void set_be_option(const char *arg)
 569 {
 570         int res = be_parse_arg(arg);
 571         (void) res;
 572         assert(res);
 573 }
 574
 575 static void copy_file(FILE *dest, FILE *input)
 576 {
 577         char buf[16384];
 578
 579         while (!feof(input) && !ferror(dest)) {
 580                 size_t read = fread(buf, 1, sizeof(buf), input);
 581                 if (fwrite(buf, 1, read, dest) != read) {
 582                         perror("couldn't write output");
 583                 }
 584         }
 585 }
 586
 587 static FILE *open_file(const char *filename)
 588 {
 589         if (streq(filename, "-")) {
 590                 return stdin;
 591         }
 592
 593         FILE *in = fopen(filename, "r");
 594         if (in == NULL) {
 595                 fprintf(stderr, "Couldn't open '%s': %s\n", filename,
 596                                 strerror(errno));
 597                 exit(EXIT_FAILURE);
 598         }
 599
 600         return in;
 601 }
 602
 603 static filetype_t get_filetype_from_string(const char *string)
 604 {
 605         if (streq(string, "c") || streq(string, "c-header"))
 606                 return FILETYPE_C;
 607         if (streq(string, "c++") || streq(string, "c++-header"))
 608                 return FILETYPE_CXX;
 609         if (streq(string, "assembler"))
 610                 return FILETYPE_PREPROCESSED_ASSEMBLER;
 611         if (streq(string, "assembler-with-cpp"))
 612                 return FILETYPE_ASSEMBLER;
 613         if (streq(string, "none"))
 614                 return FILETYPE_AUTODETECT;
 615
 616         return FILETYPE_UNKNOWN;
 617 }
 618
 619 static bool init_os_support(void)
 620 {
 621         const char *os = target_machine->operating_system;
 622         wchar_atomic_kind         = ATOMIC_TYPE_INT;
 623         force_long_double_size    = 0;
 624         enable_main_collect2_hack = false;
 625
 626         if (strstr(os, "linux") != NULL || strstr(os, "bsd") != NULL
 627                         || streq(os, "solaris")) {
 628                 set_create_ld_ident(create_name_linux_elf);
 629         } else if (streq(os, "darwin")) {
 630                 force_long_double_size = 16;
 631                 set_create_ld_ident(create_name_macho);
 632         } else if (strstr(os, "mingw") != NULL || streq(os, "win32")) {
 633                 wchar_atomic_kind         = ATOMIC_TYPE_USHORT;
 634                 enable_main_collect2_hack = true;
 635                 set_create_ld_ident(create_name_win32);
 636         } else {
 637                 return false;
 638         }
 639
 640         return true;
 641 }
 642
 643 static bool parse_target_triple(const char *arg)
 644 {
 645         machine_triple_t *triple = firm_parse_machine_triple(arg);
 646         if (triple == NULL) {
 647                 fprintf(stderr, "Target-triple is not in the form 'cpu_type-manufacturer-operating_system'\n");
 648                 return false;
 649         }
 650         return true;
 651 }
 652
 653 int main(int argc, char **argv)
 654 {
 655         initialize_firm();
 656
 657         const char        *dumpfunction         = NULL;
 658         const char        *print_file_name_file = NULL;
 659         compile_mode_t     mode                 = CompileAssembleLink;
 660         int                opt_level            = 1;
 661         int                result               = EXIT_SUCCESS;
 662         char               cpu_arch[16]         = "ia32";
 663         file_list_entry_t *files                = NULL;
 664         file_list_entry_t *last_file            = NULL;
 665         bool               construct_dep_target = false;
 666         bool               do_timing            = false;
 667         struct obstack     file_obst;
 668
 669         atexit(free_temp_files);
 670
 671         /* hack for now... */
 672         if (strstr(argv[0], "pptest") != NULL) {
 673                 extern int pptest_main(int argc, char **argv);
 674                 return pptest_main(argc, argv);
 675         }
 676
 677         obstack_init(&cppflags_obst);
 678         obstack_init(&ldflags_obst);
 679         obstack_init(&asflags_obst);
 680         obstack_init(&file_obst);
 681
 682 #define GET_ARG_AFTER(def, args)                                             \
 683         def = &arg[sizeof(args)-1];                                              \
 684         if (def[0] == '\0') {                                                     \
 685                 ++i;                                                                 \
 686                 if (i >= argc) {                                                      \
 687                         fprintf(stderr, "error: expected argument after '" args "'\n");  \
 688                         argument_errors = true;                                          \
 689                         break;                                                           \
 690                 }                                                                    \
 691                 def = argv[i];                                                       \
 692                 if (def[0] == '-' && def[1] != '\0') {                                \
 693                         fprintf(stderr, "error: expected argument after '" args "'\n");  \
 694                         argument_errors = true;                                          \
 695                         continue;                                                        \
 696                 }                                                                    \
 697         }
 698
 699 #define SINGLE_OPTION(ch) (option[0] == (ch) && option[1] == '\0')
 700
 701         /* early options parsing (find out optimisation level and OS) */
 702         for (int i = 1; i < argc; ++i) {
 703                 const char *arg = argv[i];
 704                 if (arg[0] != '-')
 705                         continue;
 706
 707                 const char *option = &arg[1];
 708                 if (option[0] == 'O') {
 709                         sscanf(&option[1], "%d", &opt_level);
 710                 }
 711         }
 712
 713         const char *target = getenv("TARGET");
 714         if (target != NULL)
 715                 parse_target_triple(target);
 716         if (target_machine == NULL) {
 717                 target_machine = firm_get_host_machine();
 718         }
 719         choose_optimization_pack(opt_level);
 720         setup_firm_for_machine(target_machine);
 721         init_os_support();
 722
 723         /* parse rest of options */
 724         standard                   = STANDARD_DEFAULT;
 725         unsigned   features_on     = 0;
 726         unsigned   features_off    = 0;
 727         filetype_t forced_filetype = FILETYPE_AUTODETECT;
 728         bool       help_displayed  = false;
 729         bool       argument_errors = false;
 730         for (int i = 1; i < argc; ++i) {
 731                 const char *arg = argv[i];
 732                 if (arg[0] == '-' && arg[1] != '\0') {
 733                         /* an option */
 734                         const char *option = &arg[1];
 735                         if (option[0] == 'o') {
 736                                 GET_ARG_AFTER(outname, "-o");
 737                         } else if (option[0] == 'g') {
 738                                 set_be_option("debuginfo=stabs");
 739                                 set_be_option("omitfp=no");
 740                                 set_be_option("ia32-nooptcc=yes");
 741                         } else if (SINGLE_OPTION('c')) {
 742                                 mode = CompileAssemble;
 743                         } else if (SINGLE_OPTION('E')) {
 744                                 mode = PreprocessOnly;
 745                         } else if (SINGLE_OPTION('S')) {
 746                                 mode = Compile;
 747                         } else if (option[0] == 'O') {
 748                                 continue;
 749                         } else if (option[0] == 'I') {
 750                                 const char *opt;
 751                                 GET_ARG_AFTER(opt, "-I");
 752                                 add_flag(&cppflags_obst, "-I%s", opt);
 753                         } else if (option[0] == 'D') {
 754                                 const char *opt;
 755                                 GET_ARG_AFTER(opt, "-D");
 756                                 add_flag(&cppflags_obst, "-D%s", opt);
 757                         } else if (option[0] == 'U') {
 758                                 const char *opt;
 759                                 GET_ARG_AFTER(opt, "-U");
 760                                 add_flag(&cppflags_obst, "-U%s", opt);
 761                         } else if (option[0] == 'l') {
 762                                 const char *opt;
 763                                 GET_ARG_AFTER(opt, "-l");
 764                                 add_flag(&ldflags_obst, "-l%s", opt);
 765                         } else if (option[0] == 'L') {
 766                                 const char *opt;
 767                                 GET_ARG_AFTER(opt, "-L");
 768                                 add_flag(&ldflags_obst, "-L%s", opt);
 769                         } else if (SINGLE_OPTION('v')) {
 770                                 verbose = 1;
 771                         } else if (SINGLE_OPTION('w')) {
 772                                 memset(&warning, 0, sizeof(warning));
 773                         } else if (option[0] == 'x') {
 774                                 const char *opt;
 775                                 GET_ARG_AFTER(opt, "-x");
 776                                 forced_filetype = get_filetype_from_string(opt);
 777                                 if (forced_filetype == FILETYPE_UNKNOWN) {
 778                                         fprintf(stderr, "Unknown language '%s'\n", opt);
 779                                         argument_errors = true;
 780                                 }
 781                         } else if (streq(option, "M")) {
 782                                 mode = PreprocessOnly;
 783                                 add_flag(&cppflags_obst, "-M");
 784                         } else if (streq(option, "MMD") ||
 785                                    streq(option, "MD")) {
 786                             construct_dep_target = true;
 787                                 add_flag(&cppflags_obst, "-%s", option);
 788                         } else if (streq(option, "MM")  ||
 789                                    streq(option, "MP")) {
 790                                 add_flag(&cppflags_obst, "-%s", option);
 791                         } else if (streq(option, "MT") ||
 792                                    streq(option, "MQ") ||
 793                                    streq(option, "MF")) {
 794                                 const char *opt;
 795                                 GET_ARG_AFTER(opt, "-MT");
 796                                 add_flag(&cppflags_obst, "-%s", option);
 797                                 add_flag(&cppflags_obst, "%s", opt);
 798                         } else if (streq(option, "include")) {
 799                                 const char *opt;
 800                                 GET_ARG_AFTER(opt, "-include");
 801                                 add_flag(&cppflags_obst, "-include");
 802                                 add_flag(&cppflags_obst, "%s", opt);
 803                         } else if (streq(option, "isystem")) {
 804                                 const char *opt;
 805                                 GET_ARG_AFTER(opt, "-isystem");
 806                                 add_flag(&cppflags_obst, "-isystem");
 807                                 add_flag(&cppflags_obst, "%s", opt);
 808 #if defined(linux) || defined(__linux) || defined(__linux__) || defined(__CYGWIN__)
 809                         } else if (streq(option, "pthread")) {
 810                                 /* set flags for the preprocessor */
 811                                 add_flag(&cppflags_obst, "-D_REENTRANT");
 812                                 /* set flags for the linker */
 813                                 add_flag(&ldflags_obst, "-lpthread");
 814 #endif
 815                         } else if (streq(option, "nostdinc")
 816                                         || streq(option, "trigraphs")) {
 817                                 /* pass these through to the preprocessor */
 818                                 add_flag(&cppflags_obst, "%s", arg);
 819                         } else if (streq(option, "pipe")) {
 820                                 /* here for gcc compatibility */
 821                         } else if (streq(option, "static")) {
 822                                 add_flag(&ldflags_obst, "-static");
 823                         } else if (streq(option, "shared")) {
 824                                 add_flag(&ldflags_obst, "-shared");
 825                         } else if (option[0] == 'f') {
 826                                 char const *orig_opt;
 827                                 GET_ARG_AFTER(orig_opt, "-f");
 828
 829                                 if (strstart(orig_opt, "input-charset=")) {
 830                                         char const* const encoding = strchr(orig_opt, '=') + 1;
 831                                         select_input_encoding(encoding);
 832                                 } else if (streq(orig_opt, "verbose-asm")) {
 833                                         /* ignore: we always print verbose assembler */
 834                                 } else {
 835                                         char const *opt         = orig_opt;
 836                                         bool        truth_value = true;
 837                                         if (opt[0] == 'n' && opt[1] == 'o' && opt[2] == '-') {
 838                                                 truth_value = false;
 839                                                 opt += 3;
 840                                         }
 841
 842                                         if (streq(opt, "builtins")) {
 843                                                 use_builtins = truth_value;
 844                                         } else if (streq(opt, "dollars-in-identifiers")) {
 845                                                 allow_dollar_in_symbol = truth_value;
 846                                         } else if (streq(opt, "omit-frame-pointer")) {
 847                                                 set_be_option(truth_value ? "omitfp" : "omitfp=no");
 848                                         } else if (streq(opt, "short-wchar")) {
 849                                                 wchar_atomic_kind = truth_value ? ATOMIC_TYPE_USHORT
 850                                                         : ATOMIC_TYPE_INT;
 851                                         } else if (streq(opt, "signed-char")) {
 852                                                 char_is_signed = truth_value;
 853                                         } else if (streq(opt, "strength-reduce")) {
 854                                                 firm_option(truth_value ? "strength-red" : "no-strength-red");
 855                                         } else if (streq(opt, "syntax-only")) {
 856                                                 mode = truth_value ? ParseOnly : CompileAssembleLink;
 857                                         } else if (streq(opt, "unsigned-char")) {
 858                                                 char_is_signed = !truth_value;
 859                                         } else if (streq(opt, "freestanding")) {
 860                                                 freestanding = true;
 861                                         } else if (streq(opt, "hosted")) {
 862                                                 freestanding = false;
 863                                         } else if (truth_value == false &&
 864                                                    streq(opt, "asynchronous-unwind-tables")) {
 865                                             /* nothing todo, a gcc feature which we don't support
 866                                              * anyway was deactivated */
 867                                         } else if (strstart(orig_opt, "align-loops=") ||
 868                                                         strstart(orig_opt, "align-jumps=") ||
 869                                                         strstart(orig_opt, "align-functions=")) {
 870                                                 fprintf(stderr, "ignoring gcc option '-f%s'\n", orig_opt);
 871                                         } else if (strstart(orig_opt, "message-length=")) {
 872                                                         /* ignore: would only affect error message format */
 873                                         } else if (streq(opt, "fast-math")               ||
 874                                                    streq(opt, "jump-tables")             ||
 875                                                    streq(opt, "expensive-optimizations") ||
 876                                                    streq(opt, "common")                  ||
 877                                                    streq(opt, "optimize-sibling-calls")  ||
 878                                                    streq(opt, "align-loops")             ||
 879                                                    streq(opt, "align-jumps")             ||
 880                                                    streq(opt, "align-functions")         ||
 881                                                    streq(opt, "PIC")) {
 882                                                 fprintf(stderr, "ignoring gcc option '-f%s'\n", orig_opt);
 883                                         } else {
 884                                                 int res = firm_option(orig_opt);
 885                                                 if (res == 0) {
 886                                                         fprintf(stderr, "error: unknown Firm option '-f%s'\n",
 887                                                                 orig_opt);
 888                                                         argument_errors = true;
 889                                                         continue;
 890                                                 } else if (res == -1) {
 891                                                         help_displayed = true;
 892                                                 }
 893                                         }
 894                                 }
 895                         } else if (option[0] == 'b') {
 896                                 const char *opt;
 897                                 GET_ARG_AFTER(opt, "-b");
 898                                 int res = be_parse_arg(opt);
 899                                 if (res == 0) {
 900                                         fprintf(stderr, "error: unknown Firm backend option '-b %s'\n",
 901                                                 opt);
 902                                         argument_errors = true;
 903                                 } else if (res == -1) {
 904                                         help_displayed = true;
 905                                 } else if (strstart(opt, "isa=")) {
 906                                         strncpy(cpu_arch, opt, sizeof(cpu_arch));
 907                                 }
 908                         } else if (option[0] == 'W') {
 909                                 if (option[1] == '\0') {
 910                                         /* ignore -W, our defaults are already quite verbose */
 911                                 } else if (strstart(option + 1, "p,")) {
 912                                         // pass options directly to the preprocessor
 913                                         const char *opt;
 914                                         GET_ARG_AFTER(opt, "-Wp,");
 915                                         add_flag(&cppflags_obst, "-Wp,%s", opt);
 916                                 } else if (strstart(option + 1, "l,")) {
 917                                         // pass options directly to the linker
 918                                         const char *opt;
 919                                         GET_ARG_AFTER(opt, "-Wl,");
 920                                         add_flag(&ldflags_obst, "-Wl,%s", opt);
 921                                 } else if (streq(option + 1, "no-trigraphs")
 922                                                         || streq(option + 1, "undef")) {
 923                                         add_flag(&cppflags_obst, "%s", arg);
 924                                 } else {
 925                                         set_warning_opt(&option[1]);
 926                                 }
 927                         } else if (option[0] == 'm') {
 928                                 /* -m options */
 929                                 const char *opt;
 930                                 char arch_opt[64];
 931
 932                                 GET_ARG_AFTER(opt, "-m");
 933                                 if (strstart(opt, "target=")) {
 934                                         GET_ARG_AFTER(opt, "-mtarget=");
 935                                         if (!parse_target_triple(opt)) {
 936                                                 argument_errors = true;
 937                                         } else {
 938                                                 setup_firm_for_machine(target_machine);
 939                                                 target_triple = opt;
 940                                         }
 941                                 } else if (strstart(opt, "triple=")) {
 942                                         GET_ARG_AFTER(opt, "-mtriple=");
 943                                         if (!parse_target_triple(opt)) {
 944                                                 argument_errors = true;
 945                                         } else {
 946                                                 setup_firm_for_machine(target_machine);
 947                                                 target_triple = opt;
 948                                         }
 949                                 } else if (strstart(opt, "arch=")) {
 950                                         GET_ARG_AFTER(opt, "-march=");
 951                                         snprintf(arch_opt, sizeof(arch_opt), "%s-arch=%s", cpu_arch, opt);
 952                                         int res = be_parse_arg(arch_opt);
 953                                         if (res == 0) {
 954                                                 fprintf(stderr, "Unknown architecture '%s'\n", arch_opt);
 955                                                 argument_errors = true;
 956                                         } else {
 957                                                 snprintf(arch_opt, sizeof(arch_opt), "%s-opt=%s", cpu_arch, opt);
 958                                                 int res = be_parse_arg(arch_opt);
 959                                                 if (res == 0)
 960                                                         argument_errors = true;
 961                                         }
 962                                 } else if (strstart(opt, "tune=")) {
 963                                         GET_ARG_AFTER(opt, "-mtune=");
 964                                         snprintf(arch_opt, sizeof(arch_opt), "%s-opt=%s", cpu_arch, opt);
 965                                         int res = be_parse_arg(arch_opt);
 966                                         if (res == 0)
 967                                                 argument_errors = true;
 968                                 } else if (strstart(opt, "cpu=")) {
 969                                         GET_ARG_AFTER(opt, "-mcpu=");
 970                                         snprintf(arch_opt, sizeof(arch_opt), "%s-arch=%s", cpu_arch, opt);
 971                                         int res = be_parse_arg(arch_opt);
 972                                         if (res == 0)
 973                                                 argument_errors = true;
 974                                 } else if (strstart(opt, "fpmath=")) {
 975                                         GET_ARG_AFTER(opt, "-mfpmath=");
 976                                         if (streq(opt, "387"))
 977                                                 opt = "x87";
 978                                         else if (streq(opt, "sse"))
 979                                                 opt = "sse2";
 980                                         else {
 981                                                 fprintf(stderr, "error: option -mfpumath supports only 387 or sse\n");
 982                                                 argument_errors = true;
 983                                         }
 984                                         if (!argument_errors) {
 985                                                 snprintf(arch_opt, sizeof(arch_opt), "%s-fpunit=%s", cpu_arch, opt);
 986                                                 int res = be_parse_arg(arch_opt);
 987                                                 if (res == 0)
 988                                                         argument_errors = true;
 989                                         }
 990                                 } else if (strstart(opt, "preferred-stack-boundary=")) {
 991                                         GET_ARG_AFTER(opt, "-mpreferred-stack-boundary=");
 992                                         snprintf(arch_opt, sizeof(arch_opt), "%s-stackalign=%s", cpu_arch, opt);
 993                                         int res = be_parse_arg(arch_opt);
 994                                         if (res == 0)
 995                                                 argument_errors = true;
 996                                 } else if (streq(opt, "omit-leaf-frame-pointer")) {
 997                                         set_be_option("omitleaffp=1");
 998                                 } else if (streq(opt, "no-omit-leaf-frame-pointer")) {
 999                                         set_be_option("omitleaffp=0");
1000                                 } else if (streq(opt, "rtd")) {
1001                                         default_calling_convention = CC_STDCALL;
1002                                 } else if (strstart(opt, "regparm=")) {
1003                                         fprintf(stderr, "error: regparm convention not supported yet\n");
1004                                         argument_errors = true;
1005                                 } else if (streq(opt, "soft-float")) {
1006                                         fprintf(stderr, "error: software floatingpoint not supported yet\n");
1007                                         argument_errors = true;
1008                                 } else {
1009                                         long int value = strtol(opt, NULL, 10);
1010                                         if (value == 0) {
1011                                                 fprintf(stderr, "error: wrong option '-m %s'\n",  opt);
1012                                                 argument_errors = true;
1013                                         } else if (value != 16 && value != 32 && value != 64) {
1014                                                 fprintf(stderr, "error: option -m supports only 16, 32 or 64\n");
1015                                                 argument_errors = true;
1016                                         } else {
1017                                                 machine_size = (unsigned int)value;
1018                                                 add_flag(&asflags_obst, "-m%u", machine_size);
1019                                                 add_flag(&ldflags_obst, "-m%u", machine_size);
1020                                         }
1021                                 }
1022                         } else if (streq(option, "pg")) {
1023                                 set_be_option("gprof");
1024                                 add_flag(&ldflags_obst, "-pg");
1025                         } else if (streq(option, "pedantic") ||
1026                                    streq(option, "ansi")) {
1027                                 fprintf(stderr, "warning: ignoring gcc option '%s'\n", arg);
1028                         } else if (streq(option, "shared")) {
1029                                 add_flag(&ldflags_obst, "-shared");
1030                         } else if (strstart(option, "std=")) {
1031                                 const char *const o = &option[4];
1032                                 standard =
1033                                         streq(o, "c++")            ? STANDARD_CXX98   :
1034                                         streq(o, "c++98")          ? STANDARD_CXX98   :
1035                                         streq(o, "c89")            ? STANDARD_C89     :
1036                                         streq(o, "c99")            ? STANDARD_C99     :
1037                                         streq(o, "c9x")            ? STANDARD_C99     : // deprecated
1038                                         streq(o, "gnu++98")        ? STANDARD_GNUXX98 :
1039                                         streq(o, "gnu89")          ? STANDARD_GNU89   :
1040                                         streq(o, "gnu99")          ? STANDARD_GNU99   :
1041                                         streq(o, "gnu9x")          ? STANDARD_GNU99   : // deprecated
1042                                         streq(o, "iso9899:1990")   ? STANDARD_C89     :
1043                                         streq(o, "iso9899:199409") ? STANDARD_C90     :
1044                                         streq(o, "iso9899:1999")   ? STANDARD_C99     :
1045                                         streq(o, "iso9899:199x")   ? STANDARD_C99     : // deprecated
1046                                         (fprintf(stderr, "warning: ignoring gcc option '%s'\n", arg), standard);
1047                         } else if (streq(option, "version")) {
1048                                 print_cparser_version();
1049                         } else if (strstart(option, "print-file-name=")) {
1050                                 GET_ARG_AFTER(print_file_name_file, "-print-file-name=");
1051                         } else if (option[0] == '-') {
1052                                 /* double dash option */
1053                                 ++option;
1054                                 if (streq(option, "gcc")) {
1055                                         features_on  |=  _GNUC;
1056                                         features_off &= ~_GNUC;
1057                                 } else if (streq(option, "no-gcc")) {
1058                                         features_on  &= ~_GNUC;
1059                                         features_off |=  _GNUC;
1060                                 } else if (streq(option, "ms")) {
1061                                         features_on  |=  _MS;
1062                                         features_off &= ~_MS;
1063                                 } else if (streq(option, "no-ms")) {
1064                                         features_on  &= ~_MS;
1065                                         features_off |=  _MS;
1066                                 } else if (streq(option, "strict")) {
1067                                         strict_mode = true;
1068                                 } else if (streq(option, "lextest")) {
1069                                         mode = LexTest;
1070                                 } else if (streq(option, "benchmark")) {
1071                                         mode = BenchmarkParser;
1072                                 } else if (streq(option, "print-ast")) {
1073                                         mode = PrintAst;
1074                                 } else if (streq(option, "print-implicit-cast")) {
1075                                         print_implicit_casts = true;
1076                                 } else if (streq(option, "print-parenthesis")) {
1077                                         print_parenthesis = true;
1078                                 } else if (streq(option, "print-fluffy")) {
1079                                         mode = PrintFluffy;
1080                                 } else if (streq(option, "print-jna")) {
1081                                         mode = PrintJna;
1082                                 } else if (streq(option, "jna-limit")) {
1083                                         ++i;
1084                                         if (i >= argc) {
1085                                                 fprintf(stderr, "error: "
1086                                                         "expected argument after '--jna-limit'\n");
1087                                                 argument_errors = true;
1088                                                 break;
1089                                         }
1090                                         jna_limit_output(argv[i]);
1091                                 } else if (streq(option, "jna-libname")) {
1092                                         ++i;
1093                                         if (i >= argc) {
1094                                                 fprintf(stderr, "error: "
1095                                                         "expected argument after '--jna-libname'\n");
1096                                                 argument_errors = true;
1097                                                 break;
1098                                         }
1099                                         jna_set_libname(argv[i]);
1100                                 } else if (streq(option, "time")) {
1101                                         do_timing = true;
1102                                 } else if (streq(option, "version")) {
1103                                         print_cparser_version();
1104                                         return EXIT_SUCCESS;
1105                                 } else if (streq(option, "help")) {
1106                                         print_help(argv[0]);
1107                                         help_displayed = true;
1108                                 } else if (streq(option, "dump-function")) {
1109                                         ++i;
1110                                         if (i >= argc) {
1111                                                 fprintf(stderr, "error: "
1112                                                         "expected argument after '--dump-function'\n");
1113                                                 argument_errors = true;
1114                                                 break;
1115                                         }
1116                                         dumpfunction = argv[i];
1117                                         mode         = CompileDump;
1118                                 } else if (streq(option, "export-ir")) {
1119                                         mode = CompileExportIR;
1120                                 } else {
1121                                         fprintf(stderr, "error: unknown argument '%s'\n", arg);
1122                                         argument_errors = true;
1123                                 }
1124                         } else {
1125                                 fprintf(stderr, "error: unknown argument '%s'\n", arg);
1126                                 argument_errors = true;
1127                         }
1128                 } else {
1129                         filetype_t type = forced_filetype;
1130                         if (type == FILETYPE_AUTODETECT) {
1131                                 if (streq(arg, "-")) {
1132                                         /* - implicitly means C source file */
1133                                         type = FILETYPE_C;
1134                                 } else {
1135                                         const char *suffix = strrchr(arg, '.');
1136                                         /* Ensure there is at least one char before the suffix */
1137                                         if (suffix != NULL && suffix != arg) {
1138                                                 ++suffix;
1139                                                 type =
1140                                                         streq(suffix, "S")   ? FILETYPE_ASSEMBLER              :
1141                                                         streq(suffix, "a")   ? FILETYPE_OBJECT                 :
1142                                                         streq(suffix, "c")   ? FILETYPE_C                      :
1143                                                         streq(suffix, "C")   ? FILETYPE_CXX                    :
1144                                                         streq(suffix, "cc")  ? FILETYPE_CXX                    :
1145                                                         streq(suffix, "cp")  ? FILETYPE_CXX                    :
1146                                                         streq(suffix, "cpp") ? FILETYPE_CXX                    :
1147                                                         streq(suffix, "CPP") ? FILETYPE_CXX                    :
1148                                                         streq(suffix, "cxx") ? FILETYPE_CXX                    :
1149                                                         streq(suffix, "c++") ? FILETYPE_CXX                    :
1150                                                         streq(suffix, "ii")  ? FILETYPE_CXX                    :
1151                                                         streq(suffix, "h")   ? FILETYPE_C                      :
1152                                                         streq(suffix, "ir")  ? FILETYPE_IR                     :
1153                                                         streq(suffix, "o")   ? FILETYPE_OBJECT                 :
1154                                                         streq(suffix, "s")   ? FILETYPE_PREPROCESSED_ASSEMBLER :
1155                                                         streq(suffix, "so")  ? FILETYPE_OBJECT                 :
1156                                                         FILETYPE_OBJECT; /* gcc behavior: unknown file extension means object file */
1157                                         }
1158                                 }
1159                         }
1160
1161                         file_list_entry_t *entry
1162                                 = obstack_alloc(&file_obst, sizeof(entry[0]));
1163                         memset(entry, 0, sizeof(entry[0]));
1164                         entry->name = arg;
1165                         entry->type = type;
1166
1167                         if (last_file != NULL) {
1168                                 last_file->next = entry;
1169                         } else {
1170                                 files = entry;
1171                         }
1172                         last_file = entry;
1173                 }
1174         }
1175
1176         if (help_displayed) {
1177                 return !argument_errors;
1178         }
1179
1180         if (print_file_name_file != NULL) {
1181                 print_file_name(print_file_name_file);
1182                 return EXIT_SUCCESS;
1183         }
1184         if (files == NULL) {
1185                 fprintf(stderr, "error: no input files specified\n");
1186                 argument_errors = true;
1187         }
1188
1189         if (argument_errors) {
1190                 usage(argv[0]);
1191                 return EXIT_FAILURE;
1192         }
1193
1194         /* set the c_mode here, types depends on it */
1195         c_mode |= features_on;
1196         c_mode &= ~features_off;
1197
1198         gen_firm_init();
1199         byte_order_big_endian = be_get_backend_param()->byte_order_big_endian;
1200         init_symbol_table();
1201         init_types();
1202         init_typehash();
1203         init_basic_types();
1204         init_lexer();
1205         init_ast();
1206         init_parser();
1207         init_ast2firm();
1208         init_mangle();
1209
1210         if (do_timing)
1211                 timer_init();
1212
1213         if (construct_dep_target) {
1214                 if (outname != 0 && strlen(outname) >= 2) {
1215                         get_output_name(dep_target, sizeof(dep_target), outname, ".d");
1216                 } else {
1217                         get_output_name(dep_target, sizeof(dep_target), files->name, ".d");
1218                 }
1219         } else {
1220                 dep_target[0] = '\0';
1221         }
1222
1223         char outnamebuf[4096];
1224         if (outname == NULL) {
1225                 const char *filename = files->name;
1226
1227                 switch(mode) {
1228                 case BenchmarkParser:
1229                 case PrintAst:
1230                 case PrintFluffy:
1231                 case PrintJna:
1232                 case LexTest:
1233                 case PreprocessOnly:
1234                 case ParseOnly:
1235                         outname = "-";
1236                         break;
1237                 case Compile:
1238                         get_output_name(outnamebuf, sizeof(outnamebuf), filename, ".s");
1239                         outname = outnamebuf;
1240                         break;
1241                 case CompileAssemble:
1242                         get_output_name(outnamebuf, sizeof(outnamebuf), filename, ".o");
1243                         outname = outnamebuf;
1244                         break;
1245                 case CompileDump:
1246                         get_output_name(outnamebuf, sizeof(outnamebuf), dumpfunction,
1247                                         ".vcg");
1248                         outname = outnamebuf;
1249                         break;
1250                 case CompileExportIR:
1251                         get_output_name(outnamebuf, sizeof(outnamebuf), filename, ".ir");
1252                         outname = outnamebuf;
1253                         break;
1254                 case CompileAssembleLink:
1255 #ifdef _WIN32
1256                         outname = "a.exe";
1257 #else
1258                         outname = "a.out";
1259 #endif
1260                         break;
1261                 }
1262         }
1263
1264         assert(outname != NULL);
1265
1266         FILE *out;
1267         if (streq(outname, "-")) {
1268                 out = stdout;
1269         } else {
1270                 out = fopen(outname, "w");
1271                 if (out == NULL) {
1272                         fprintf(stderr, "Couldn't open '%s' for writing: %s\n", outname,
1273                                         strerror(errno));
1274                         return EXIT_FAILURE;
1275                 }
1276         }
1277
1278         file_list_entry_t *file;
1279         bool               already_constructed_firm = false;
1280         for (file = files; file != NULL; file = file->next) {
1281                 char        asm_tempfile[1024];
1282                 const char *filename = file->name;
1283                 filetype_t  filetype = file->type;
1284
1285                 if (filetype == FILETYPE_OBJECT)
1286                         continue;
1287
1288                 FILE *in = NULL;
1289                 if (mode == LexTest) {
1290                         if (in == NULL)
1291                                 in = open_file(filename);
1292                         lextest(in, filename);
1293                         fclose(in);
1294                         return EXIT_SUCCESS;
1295                 }
1296
1297                 FILE *preprocessed_in = NULL;
1298                 filetype_t next_filetype = filetype;
1299                 switch (filetype) {
1300                         case FILETYPE_C:
1301                                 next_filetype = FILETYPE_PREPROCESSED_C;
1302                                 goto preprocess;
1303                         case FILETYPE_CXX:
1304                                 next_filetype = FILETYPE_PREPROCESSED_CXX;
1305                                 goto preprocess;
1306                         case FILETYPE_ASSEMBLER:
1307                                 next_filetype = FILETYPE_PREPROCESSED_ASSEMBLER;
1308                                 goto preprocess;
1309 preprocess:
1310                                 /* no support for input on FILE* yet */
1311                                 if (in != NULL)
1312                                         panic("internal compiler error: in for preprocessor != NULL");
1313
1314                                 preprocessed_in = preprocess(filename, filetype);
1315                                 if (mode == PreprocessOnly) {
1316                                         copy_file(out, preprocessed_in);
1317                                         int result = pclose(preprocessed_in);
1318                                         fclose(out);
1319                                         /* remove output file in case of error */
1320                                         if (out != stdout && result != EXIT_SUCCESS) {
1321                                                 unlink(outname);
1322                                         }
1323                                         return result;
1324                                 }
1325
1326                                 in = preprocessed_in;
1327                                 filetype = next_filetype;
1328                                 break;
1329
1330                         default:
1331                                 break;
1332                 }
1333
1334                 FILE *asm_out;
1335                 if (mode == Compile) {
1336                         asm_out = out;
1337                 } else {
1338                         asm_out = make_temp_file(asm_tempfile, sizeof(asm_tempfile), "ccs");
1339                 }
1340
1341                 if (in == NULL)
1342                         in = open_file(filename);
1343
1344                 /* preprocess and compile */
1345                 if (filetype == FILETYPE_PREPROCESSED_C) {
1346                         char const* invalid_mode;
1347                         switch (standard) {
1348                                 case STANDARD_ANSI:
1349                                 case STANDARD_C89:   c_mode = _C89;                break;
1350                                 /* TODO determine difference between these two */
1351                                 case STANDARD_C90:   c_mode = _C89;                break;
1352                                 case STANDARD_C99:   c_mode = _C89 | _C99;         break;
1353                                 case STANDARD_GNU89: c_mode = _C89 |        _GNUC; break;
1354
1355 default_c_warn:
1356                                         fprintf(stderr,
1357                                                         "warning: command line option \"-std=%s\" is not valid for C\n",
1358                                                         invalid_mode);
1359                                         /* FALLTHROUGH */
1360                                 case STANDARD_DEFAULT:
1361                                 case STANDARD_GNU99:   c_mode = _C89 | _C99 | _GNUC; break;
1362
1363                                 case STANDARD_CXX98:   invalid_mode = "c++98"; goto default_c_warn;
1364                                 case STANDARD_GNUXX98: invalid_mode = "gnu98"; goto default_c_warn;
1365                         }
1366                         goto do_parsing;
1367                 } else if (filetype == FILETYPE_PREPROCESSED_CXX) {
1368                         char const* invalid_mode;
1369                         switch (standard) {
1370                                 case STANDARD_C89:   invalid_mode = "c89";   goto default_cxx_warn;
1371                                 case STANDARD_C90:   invalid_mode = "c90";   goto default_cxx_warn;
1372                                 case STANDARD_C99:   invalid_mode = "c99";   goto default_cxx_warn;
1373                                 case STANDARD_GNU89: invalid_mode = "gnu89"; goto default_cxx_warn;
1374                                 case STANDARD_GNU99: invalid_mode = "gnu99"; goto default_cxx_warn;
1375
1376                                 case STANDARD_ANSI:
1377                                 case STANDARD_CXX98: c_mode = _CXX; break;
1378
1379 default_cxx_warn:
1380                                         fprintf(stderr,
1381                                                         "warning: command line option \"-std=%s\" is not valid for C++\n",
1382                                                         invalid_mode);
1383                                 case STANDARD_DEFAULT:
1384                                 case STANDARD_GNUXX98: c_mode = _CXX | _GNUC; break;
1385                         }
1386
1387 do_parsing:
1388                         c_mode |= features_on;
1389                         c_mode &= ~features_off;
1390
1391                         /* do the actual parsing */
1392                         ir_timer_t *t_parsing = ir_timer_new();
1393                         timer_register(t_parsing, "Frontend: Parsing");
1394                         timer_push(t_parsing);
1395                         init_tokens();
1396                         translation_unit_t *const unit = do_parsing(in, filename);
1397                         timer_pop(t_parsing);
1398
1399                         /* prints the AST even if errors occurred */
1400                         if (mode == PrintAst) {
1401                                 print_to_file(out);
1402                                 print_ast(unit);
1403                         }
1404
1405                         if (error_count > 0) {
1406                                 /* parsing failed because of errors */
1407                                 fprintf(stderr, "%u error(s), %u warning(s)\n", error_count,
1408                                         warning_count);
1409                                 result = EXIT_FAILURE;
1410                                 continue;
1411                         } else if (warning_count > 0) {
1412                                 fprintf(stderr, "%u warning(s)\n", warning_count);
1413                         }
1414
1415                         if (in == preprocessed_in) {
1416                                 int pp_result = pclose(preprocessed_in);
1417                                 if (pp_result != EXIT_SUCCESS) {
1418                                         /* remove output file */
1419                                         if (out != stdout)
1420                                                 unlink(outname);
1421                                         return EXIT_FAILURE;
1422                                 }
1423                         }
1424
1425                         if (mode == BenchmarkParser) {
1426                                 return result;
1427                         } else if (mode == PrintFluffy) {
1428                                 write_fluffy_decls(out, unit);
1429                                 continue;
1430                         } else if (mode == PrintJna) {
1431                                 write_jna_decls(out, unit);
1432                                 continue;
1433                         }
1434
1435                         /* build the firm graph */
1436                         ir_timer_t *t_construct = ir_timer_new();
1437                         timer_register(t_construct, "Frontend: Graph construction");
1438                         timer_push(t_construct);
1439                         if (already_constructed_firm) {
1440                                 panic("compiling multiple files/translation units not possible");
1441                         }
1442                         translation_unit_to_firm(unit);
1443                         already_constructed_firm = true;
1444                         timer_pop(t_construct);
1445
1446 graph_built:
1447                         if (mode == ParseOnly) {
1448                                 continue;
1449                         }
1450
1451                         if (mode == CompileDump) {
1452                                 /* find irg */
1453                                 ident    *id     = new_id_from_str(dumpfunction);
1454                                 ir_graph *irg    = NULL;
1455                                 int       n_irgs = get_irp_n_irgs();
1456                                 for (int i = 0; i < n_irgs; ++i) {
1457                                         ir_graph *tirg   = get_irp_irg(i);
1458                                         ident    *irg_id = get_entity_ident(get_irg_entity(tirg));
1459                                         if (irg_id == id) {
1460                                                 irg = tirg;
1461                                                 break;
1462                                         }
1463                                 }
1464
1465                                 if (irg == NULL) {
1466                                         fprintf(stderr, "No graph for function '%s' found\n",
1467                                                 dumpfunction);
1468                                         return EXIT_FAILURE;
1469                                 }
1470
1471                                 dump_ir_graph_file(out, irg);
1472                                 fclose(out);
1473                                 return EXIT_SUCCESS;
1474                         }
1475
1476                         if (mode == CompileExportIR) {
1477                                 fclose(out);
1478                                 ir_export(outname);
1479                                 return EXIT_SUCCESS;
1480                         }
1481
1482                         gen_firm_finish(asm_out, filename);
1483                         if (asm_out != out) {
1484                                 fclose(asm_out);
1485                         }
1486                 } else if (filetype == FILETYPE_IR) {
1487                         fclose(in);
1488                         ir_import(filename);
1489                         goto graph_built;
1490                 } else if (filetype == FILETYPE_PREPROCESSED_ASSEMBLER) {
1491                         copy_file(asm_out, in);
1492                         if (in == preprocessed_in) {
1493                                 int pp_result = pclose(preprocessed_in);
1494                                 if (pp_result != EXIT_SUCCESS) {
1495                                         /* remove output in error case */
1496                                         if (out != stdout)
1497                                                 unlink(outname);
1498                                         return pp_result;
1499                                 }
1500                         }
1501                         if (asm_out != out) {
1502                                 fclose(asm_out);
1503                         }
1504                 }
1505
1506                 if (mode == Compile)
1507                         continue;
1508
1509                 /* if we're here then we have preprocessed assembly */
1510                 filename = asm_tempfile;
1511                 filetype = FILETYPE_PREPROCESSED_ASSEMBLER;
1512
1513                 /* assemble */
1514                 if (filetype == FILETYPE_PREPROCESSED_ASSEMBLER) {
1515                         char        temp[1024];
1516                         const char *filename_o;
1517                         if (mode == CompileAssemble) {
1518                                 fclose(out);
1519                                 filename_o = outname;
1520                         } else {
1521                                 FILE *tempf = make_temp_file(temp, sizeof(temp), "cco");
1522                                 fclose(tempf);
1523                                 filename_o = temp;
1524                         }
1525
1526                         assemble(filename_o, filename);
1527
1528                         size_t len = strlen(filename_o) + 1;
1529                         filename = obstack_copy(&file_obst, filename_o, len);
1530                         filetype = FILETYPE_OBJECT;
1531                 }
1532
1533                 /* ok we're done here, process next file */
1534                 file->name = filename;
1535                 file->type = filetype;
1536         }
1537
1538         if (result != EXIT_SUCCESS) {
1539                 if (out != stdout)
1540                         unlink(outname);
1541                 return result;
1542         }
1543
1544         /* link program file */
1545         if (mode == CompileAssembleLink) {
1546                 obstack_1grow(&ldflags_obst, '\0');
1547                 const char *flags = obstack_finish(&ldflags_obst);
1548
1549                 /* construct commandline */
1550                 const char *linker = getenv("CPARSER_LINK");
1551                 if (linker != NULL) {
1552                         obstack_printf(&file_obst, "%s ", linker);
1553                 } else {
1554                         if (target_triple != NULL)
1555                                 obstack_printf(&file_obst, "%s-", target_triple);
1556                         obstack_printf(&file_obst, "%s ", LINKER);
1557                 }
1558
1559                 for (file_list_entry_t *entry = files; entry != NULL;
1560                                 entry = entry->next) {
1561                         if (entry->type != FILETYPE_OBJECT)
1562                                 continue;
1563
1564                         add_flag(&file_obst, "%s", entry->name);
1565                 }
1566
1567                 add_flag(&file_obst, "-o");
1568                 add_flag(&file_obst, outname);
1569                 obstack_printf(&file_obst, "%s", flags);
1570                 obstack_1grow(&file_obst, '\0');
1571
1572                 char *commandline = obstack_finish(&file_obst);
1573
1574                 if (verbose) {
1575                         puts(commandline);
1576                 }
1577                 int err = system(commandline);
1578                 if (err != EXIT_SUCCESS) {
1579                         fprintf(stderr, "linker reported an error\n");
1580                         return EXIT_FAILURE;
1581                 }
1582         }
1583
1584         if (do_timing)
1585                 timer_term(stderr);
1586
1587         obstack_free(&cppflags_obst, NULL);
1588         obstack_free(&ldflags_obst, NULL);
1589         obstack_free(&asflags_obst, NULL);
1590         obstack_free(&file_obst, NULL);
1591
1592         exit_mangle();
1593         exit_ast2firm();
1594         exit_parser();
1595         exit_ast();
1596         exit_lexer();
1597         exit_typehash();
1598         exit_types();
1599         exit_tokens();
1600         exit_symbol_table();
1601         return EXIT_SUCCESS;
1602 }