nsz Git - cparser/blob - main.c

   1 /*
   2  * This file is part of cparser.
   3  * Copyright (C) 2007-2008 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 "adt/error.h"
  75 #include "write_fluffy.h"
  76 #include "write_caml.h"
  77 #include "revision.h"
  78 #include "warning.h"
  79 #include "mangle.h"
  80
  81 #ifndef PREPROCESSOR
  82 #ifndef __WIN32__
  83 #define PREPROCESSOR "gcc -E -std=c99 -m32 -U__STRICT_ANSI__"
  84 #else
  85 #define PREPROCESSOR "cpp -std=c99 -m32 -U__STRICT_ANSI__"
  86 #endif
  87 #endif
  88
  89 #ifndef LINKER
  90 #define LINKER    "gcc -m32"
  91 #endif
  92
  93 #ifndef ASSEMBLER
  94 #ifdef __APPLE__
  95 #define ASSEMBLER "gcc -c -xassembler"
  96 #else
  97 #define ASSEMBLER "as --32"
  98 #endif
  99 #endif
 100
 101 /** The current c mode/dialect. */
 102 unsigned int c_mode = _C89 | _ANSI | _C99 | _GNUC;
 103
 104 /** The 'machine size', 16, 32 or 64 bit, 32bit is the default. */
 105 unsigned int machine_size = 32;
 106
 107 /** true if the char type is signed. */
 108 bool char_is_signed = true;
 109
 110 /** true for strict language checking. */
 111 bool strict_mode = false;
 112
 113 /** use builtins for some libc functions */
 114 bool use_builtins = false;
 115
 116 /** we have extern function with const attribute. */
 117 bool have_const_functions = false;
 118
 119 atomic_type_kind_t wchar_atomic_kind = ATOMIC_TYPE_INT;
 120
 121 /* to switch on printing of implicit casts */
 122 extern bool print_implicit_casts;
 123
 124 /* to switch on printing of parenthesis to indicate operator precedence */
 125 extern bool print_parenthesis;
 126
 127 static int             verbose;
 128 static struct obstack  cppflags_obst, ldflags_obst;
 129 static char            dep_target[1024];
 130 static const char     *outname;
 131
 132 typedef struct file_list_entry_t file_list_entry_t;
 133
 134 typedef enum filetype_t {
 135         FILETYPE_AUTODETECT,
 136         FILETYPE_C,
 137         FILETYPE_PREPROCESSED_C,
 138         FILETYPE_CXX,
 139         FILETYPE_PREPROCESSED_CXX,
 140         FILETYPE_ASSEMBLER,
 141         FILETYPE_PREPROCESSED_ASSEMBLER,
 142         FILETYPE_OBJECT,
 143         FILETYPE_UNKNOWN
 144 } filetype_t;
 145
 146 struct file_list_entry_t {
 147         const char  *name; /**< filename or NULL for stdin */
 148         filetype_t   type;
 149         file_list_entry_t *next;
 150 };
 151
 152 static file_list_entry_t *temp_files;
 153
 154 #if defined(_DEBUG) || defined(FIRM_DEBUG)
 155 /**
 156  * Debug printf implementation.
 157  *
 158  * @param fmt  printf style format parameter
 159  */
 160 void dbg_printf(const char *fmt, ...)
 161 {
 162         va_list list;
 163
 164         if (firm_dump.debug_print) {
 165                 va_start(list, fmt);
 166                 vprintf(fmt, list);
 167                 va_end(list);
 168         }  /* if */
 169 }
 170 #endif /* defined(_DEBUG) || defined(FIRM_DEBUG) */
 171
 172 static void initialize_firm(void)
 173 {
 174         firm_early_init();
 175
 176         dump_consts_local(1);
 177         dump_keepalive_edges(1);
 178 }
 179
 180 static void get_output_name(char *buf, size_t buflen, const char *inputname,
 181                             const char *newext)
 182 {
 183         size_t last_dot = 0xffffffff;
 184         size_t i = 0;
 185
 186         if (inputname == NULL) {
 187                 snprintf(buf, buflen, "a%s", newext);
 188                 return;
 189         }
 190
 191         for (const char *c = inputname; *c != 0; ++c) {
 192                 if (*c == '.')
 193                         last_dot = i;
 194                 ++i;
 195         }
 196         if (last_dot == 0xffffffff)
 197                 last_dot = i;
 198
 199         if (last_dot >= buflen)
 200                 panic("filename too long");
 201         memcpy(buf, inputname, last_dot);
 202
 203         size_t extlen = strlen(newext) + 1;
 204         if (extlen + last_dot >= buflen)
 205                 panic("filename too long");
 206         memcpy(buf+last_dot, newext, extlen);
 207 }
 208
 209 #include "builtins.h"
 210
 211 static translation_unit_t *do_parsing(FILE *const in, const char *const input_name)
 212 {
 213         start_parsing();
 214
 215         if (use_builtins) {
 216                 lexer_open_buffer(builtins, sizeof(builtins)-1, "<builtin>");
 217                 parse();
 218         }
 219
 220         lexer_open_stream(in, input_name);
 221         parse();
 222
 223         translation_unit_t *unit = finish_parsing();
 224         return unit;
 225 }
 226
 227 static void lextest(FILE *in, const char *fname)
 228 {
 229         lexer_open_stream(in, fname);
 230
 231         do {
 232                 lexer_next_preprocessing_token();
 233                 print_token(stdout, &lexer_token);
 234                 putchar('\n');
 235         } while (lexer_token.type != T_EOF);
 236 }
 237
 238 static void add_flag(struct obstack *obst, const char *format, ...)
 239 {
 240         char buf[4096];
 241         va_list ap;
 242
 243         va_start(ap, format);
 244 #ifdef _WIN32
 245         int len =
 246 #endif
 247                 vsnprintf(buf, sizeof(buf), format, ap);
 248         va_end(ap);
 249
 250         obstack_1grow(obst, ' ');
 251 #ifdef _WIN32
 252         obstack_1grow(obst, '"');
 253         obstack_grow(obst, buf, len);
 254         obstack_1grow(obst, '"');
 255 #else
 256         /* escape stuff... */
 257         for (char *c = buf; *c != '\0'; ++c) {
 258                 switch(*c) {
 259                 case '"':
 260                 case '\'':
 261                 case '`':
 262                 case ' ':
 263                 case '\t':
 264                 case '\n':
 265                 case '\r':
 266                 case '\\':
 267                 case '$':
 268                 case '(':
 269                 case ')':
 270                 case '<':
 271                 case '>':
 272                 case '&':
 273                         obstack_1grow(obst, '\\');
 274                         /* FALLTHROUGH */
 275                 default:
 276                         obstack_1grow(obst, *c);
 277                         break;
 278                 }
 279         }
 280 #endif
 281 }
 282
 283 static const char *type_to_string(type_t *type)
 284 {
 285         assert(type->kind == TYPE_ATOMIC);
 286         return get_atomic_kind_name(type->atomic.akind);
 287 }
 288
 289 static FILE *preprocess(const char *fname)
 290 {
 291         obstack_1grow(&cppflags_obst, '\0');
 292         const char *flags = obstack_finish(&cppflags_obst);
 293
 294         obstack_printf(&cppflags_obst, "%s", PREPROCESSOR);
 295
 296         /* setup default defines */
 297         add_flag(&cppflags_obst, "-U__WCHAR_TYPE__");
 298         add_flag(&cppflags_obst, "-D__WCHAR_TYPE__=%s", type_to_string(type_wchar_t));
 299         add_flag(&cppflags_obst, "-U__SIZE_TYPE__");
 300         add_flag(&cppflags_obst, "-D__SIZE_TYPE__=%s", type_to_string(type_size_t));
 301
 302         /* hack... */
 303         add_flag(&cppflags_obst, "-D__builtin_memcpy=memcpy");
 304
 305         /* handle dependency generation */
 306         if (dep_target[0] != '\0') {
 307                 add_flag(&cppflags_obst, "-MF");
 308                 add_flag(&cppflags_obst, dep_target);
 309                 if (outname != NULL) {
 310                                 add_flag(&cppflags_obst, "-MQ");
 311                                 add_flag(&cppflags_obst, outname);
 312                 }
 313         }
 314         if (flags[0] != '\0') {
 315                 obstack_printf(&cppflags_obst, " %s", flags);
 316         }
 317         add_flag(&cppflags_obst, fname);
 318
 319         obstack_1grow(&cppflags_obst, '\0');
 320         const char *buf = obstack_finish(&cppflags_obst);
 321         if (verbose) {
 322                 puts(buf);
 323         }
 324
 325         FILE *f = popen(buf, "r");
 326         if (f == NULL) {
 327                 fprintf(stderr, "invoking preprocessor failed\n");
 328                 exit(1);
 329         }
 330
 331         return f;
 332 }
 333
 334 static void assemble(const char *out, const char *in)
 335 {
 336         char buf[4096];
 337
 338         snprintf(buf, sizeof(buf), "%s %s -o %s", ASSEMBLER, in, out);
 339         if (verbose) {
 340                 puts(buf);
 341         }
 342
 343         int err = system(buf);
 344         if (err != 0) {
 345                 fprintf(stderr, "assembler reported an error\n");
 346                 exit(1);
 347         }
 348 }
 349
 350 static void print_file_name(const char *file)
 351 {
 352         add_flag(&ldflags_obst, "-print-file-name=%s", file);
 353
 354         obstack_1grow(&ldflags_obst, '\0');
 355         const char *flags = obstack_finish(&ldflags_obst);
 356
 357         /* construct commandline */
 358         obstack_printf(&ldflags_obst, "%s ", LINKER);
 359         obstack_printf(&ldflags_obst, "%s", flags);
 360         obstack_1grow(&ldflags_obst, '\0');
 361
 362         char *commandline = obstack_finish(&ldflags_obst);
 363
 364         if (verbose) {
 365                 puts(commandline);
 366         }
 367         int err = system(commandline);
 368         if (err != EXIT_SUCCESS) {
 369                 fprintf(stderr, "linker reported an error\n");
 370                 exit(1);
 371         }
 372 }
 373
 374 static const char *try_dir(const char *dir)
 375 {
 376         if (dir == NULL)
 377                 return dir;
 378         if (access(dir, R_OK | W_OK | X_OK) == 0)
 379                 return dir;
 380         return NULL;
 381 }
 382
 383 static const char *get_tempdir(void)
 384 {
 385         static const char *tmpdir = NULL;
 386
 387         if (tmpdir != NULL)
 388                 return tmpdir;
 389
 390         if (tmpdir == NULL)
 391                 tmpdir = try_dir(getenv("TMPDIR"));
 392         if (tmpdir == NULL)
 393                 tmpdir = try_dir(getenv("TMP"));
 394         if (tmpdir == NULL)
 395                 tmpdir = try_dir(getenv("TEMP"));
 396
 397 #ifdef P_tmpdir
 398         if (tmpdir == NULL)
 399                 tmpdir = try_dir(P_tmpdir);
 400 #endif
 401
 402         if (tmpdir == NULL)
 403                 tmpdir = try_dir("/var/tmp");
 404         if (tmpdir == NULL)
 405                 tmpdir = try_dir("/usr/tmp");
 406         if (tmpdir == NULL)
 407                 tmpdir = try_dir("/tmp");
 408
 409         if (tmpdir == NULL)
 410                 tmpdir = ".";
 411
 412         return tmpdir;
 413 }
 414
 415 #ifndef HAVE_MKSTEMP
 416 /* cheap and nasty mkstemp replacement */
 417 static int mkstemp(char *templ)
 418 {
 419         mktemp(templ);
 420         return open(templ, O_RDWR|O_CREAT|O_EXCL|O_BINARY, 0600);
 421 }
 422 #endif
 423
 424 /**
 425  * an own version of tmpnam, which: writes in a buffer, emits no warnings
 426  * during linking (like glibc/gnu ld do for tmpnam)...
 427  */
 428 static FILE *make_temp_file(char *buffer, size_t buflen, const char *prefix)
 429 {
 430         const char *tempdir = get_tempdir();
 431
 432         snprintf(buffer, buflen, "%s/%sXXXXXX", tempdir, prefix);
 433
 434         int fd = mkstemp(buffer);
 435         if (fd == -1) {
 436                 fprintf(stderr, "couldn't create temporary file: %s\n",
 437                         strerror(errno));
 438                 exit(1);
 439         }
 440         FILE *out = fdopen(fd, "w");
 441         if (out == NULL) {
 442                 fprintf(stderr, "couldn't create temporary file FILE*\n");
 443                 exit(1);
 444         }
 445
 446         file_list_entry_t *entry = xmalloc(sizeof(*entry));
 447         memset(entry, 0, sizeof(*entry));
 448
 449         size_t  name_len = strlen(buffer) + 1;
 450         char   *name     = malloc(name_len);
 451         memcpy(name, buffer, name_len);
 452         entry->name      = name;
 453
 454         entry->next = temp_files;
 455         temp_files  = entry;
 456
 457         return out;
 458 }
 459
 460 static void free_temp_files(void)
 461 {
 462         file_list_entry_t *entry = temp_files;
 463         file_list_entry_t *next;
 464         for ( ; entry != NULL; entry = next) {
 465                 next = entry->next;
 466
 467                 unlink(entry->name);
 468                 free((char*) entry->name);
 469                 free(entry);
 470         }
 471         temp_files = NULL;
 472 }
 473
 474 /**
 475  * Do the necessary lowering for compound parameters.
 476  */
 477 void lower_compound_params(void)
 478 {
 479         lower_params_t params;
 480
 481         params.def_ptr_alignment    = 4;
 482         params.flags                = LF_COMPOUND_RETURN | LF_RETURN_HIDDEN;
 483         params.hidden_params        = ADD_HIDDEN_ALWAYS_IN_FRONT;
 484         params.find_pointer_type    = NULL;
 485         params.ret_compound_in_regs = NULL;
 486         lower_calls_with_compounds(&params);
 487 }
 488
 489 typedef enum compile_mode_t {
 490         BenchmarkParser,
 491         PreprocessOnly,
 492         ParseOnly,
 493         Compile,
 494         CompileDump,
 495         CompileAssemble,
 496         CompileAssembleLink,
 497         LexTest,
 498         PrintAst,
 499         PrintFluffy,
 500         PrintCaml
 501 } compile_mode_t;
 502
 503 static void usage(const char *argv0)
 504 {
 505         fprintf(stderr, "Usage %s input [-o output] [-c]\n", argv0);
 506 }
 507
 508 static void print_cparser_version(void) {
 509         firm_version_t ver;
 510         firm_get_version(&ver);
 511
 512         printf("cparser (%s) using libFirm (%u.%u",
 513                 cparser_REVISION, ver.major, ver.minor);
 514         if (ver.revision[0] != 0) {
 515                 putchar(' ');
 516                 fputs(ver.revision, stdout);
 517         }
 518         if (ver.build[0] != 0) {
 519                 putchar(' ');
 520                 fputs(ver.build, stdout);
 521         }
 522         puts(")\n");
 523 }
 524
 525 static void set_be_option(const char *arg)
 526 {
 527         int res = firm_be_option(arg);
 528         (void) res;
 529         assert(res);
 530 }
 531
 532 static void set_option(const char *arg)
 533 {
 534         int res = firm_option(arg);
 535         (void) res;
 536         assert(res);
 537 }
 538
 539 static void copy_file(FILE *dest, FILE *input)
 540 {
 541         char buf[16384];
 542
 543         while (!feof(input) && !ferror(dest)) {
 544                 size_t read = fread(buf, 1, sizeof(buf), input);
 545                 if (fwrite(buf, 1, read, dest) != read) {
 546                         perror("couldn't write output");
 547                 }
 548         }
 549 }
 550
 551 static inline bool streq(char const* a, char const* b)
 552 {
 553         return strcmp(a, b) == 0;
 554 }
 555
 556 static inline bool strstart(char const* str, char const* start)
 557 {
 558         do {
 559                 if (*start == '\0')
 560                         return true;
 561         } while (*str++ == *start++);
 562         return false;
 563 }
 564
 565 static FILE *open_file(const char *filename)
 566 {
 567         if (streq(filename, "-")) {
 568                 return stdin;
 569         }
 570
 571         FILE *in = fopen(filename, "r");
 572         if (in == NULL) {
 573                 fprintf(stderr, "Couldn't open '%s': %s\n", filename,
 574                                 strerror(errno));
 575                 exit(1);
 576         }
 577
 578         return in;
 579 }
 580
 581 static filetype_t get_filetype_from_string(const char *string)
 582 {
 583         if (streq(string, "c") || streq(string, "c-header"))
 584                 return FILETYPE_C;
 585         if (streq(string, "c++") || streq(string, "c++-header"))
 586                 return FILETYPE_CXX;
 587         if (streq(string, "assembler"))
 588                 return FILETYPE_PREPROCESSED_ASSEMBLER;
 589         if (streq(string, "assembler-with-cpp"))
 590                 return FILETYPE_ASSEMBLER;
 591         if (streq(string, "none"))
 592                 return FILETYPE_AUTODETECT;
 593
 594         return FILETYPE_UNKNOWN;
 595 }
 596
 597 static void init_os_support(void)
 598 {
 599         /* OS option must be set to the backend */
 600         switch (firm_opt.os_support) {
 601         case OS_SUPPORT_MINGW:
 602                 set_be_option("ia32-gasmode=mingw");
 603                 wchar_atomic_kind = ATOMIC_TYPE_USHORT;
 604                 break;
 605         case OS_SUPPORT_LINUX:
 606                 set_be_option("ia32-gasmode=elf");
 607                 break;
 608         case OS_SUPPORT_MACHO:
 609                 set_be_option("ia32-gasmode=macho");
 610                 set_be_option("ia32-stackalign=4");
 611                 set_be_option("pic");
 612                 break;
 613         }
 614 }
 615
 616 typedef enum lang_standard_t {
 617         STANDARD_DEFAULT, /* gnu99 (for C, GCC does gnu89) or gnu++98 (for C++) */
 618         STANDARD_ANSI,    /* c89 (for C) or c++98 (for C++) */
 619         STANDARD_C89,     /* ISO C90 (sic) */
 620         STANDARD_C90,     /* ISO C90 as modified in amendment 1 */
 621         STANDARD_C99,     /* ISO C99 */
 622         STANDARD_GNU89,   /* ISO C90 plus GNU extensions (including some C99) */
 623         STANDARD_GNU99,   /* ISO C99 plus GNU extensions */
 624         STANDARD_CXX98,   /* ISO C++ 1998 plus amendments */
 625         STANDARD_GNUXX98  /* ISO C++ 1998 plus amendments and GNU extensions */
 626 } lang_standard_t;
 627
 628 int main(int argc, char **argv)
 629 {
 630         initialize_firm();
 631
 632         const char        *dumpfunction         = NULL;
 633         const char        *print_file_name_file = NULL;
 634         compile_mode_t     mode                 = CompileAssembleLink;
 635         int                opt_level            = 1;
 636         int                result               = EXIT_SUCCESS;
 637         char               cpu_arch[16]         = "ia32";
 638         file_list_entry_t *files                = NULL;
 639         file_list_entry_t *last_file            = NULL;
 640         bool               construct_dep_target = false;
 641         struct obstack     file_obst;
 642
 643         atexit(free_temp_files);
 644
 645         /* hack for now... */
 646         if (strstr(argv[0], "pptest") != NULL) {
 647                 extern int pptest_main(int argc, char **argv);
 648                 return pptest_main(argc, argv);
 649         }
 650
 651         obstack_init(&cppflags_obst);
 652         obstack_init(&ldflags_obst);
 653         obstack_init(&file_obst);
 654
 655 #define GET_ARG_AFTER(def, args)                                             \
 656         def = &arg[sizeof(args)-1];                                              \
 657         if (def[0] == '\0') {                                                     \
 658                 ++i;                                                                 \
 659                 if (i >= argc) {                                                      \
 660                         fprintf(stderr, "error: expected argument after '" args "'\n");  \
 661                         argument_errors = true;                                          \
 662                         break;                                                           \
 663                 }                                                                    \
 664                 def = argv[i];                                                       \
 665                 if (def[0] == '-' && def[1] != '\0') {                                \
 666                         fprintf(stderr, "error: expected argument after '" args "'\n");  \
 667                         argument_errors = true;                                          \
 668                         continue;                                                        \
 669                 }                                                                    \
 670         }
 671
 672 #define SINGLE_OPTION(ch) (option[0] == (ch) && option[1] == '\0')
 673
 674         /* early options parsing (find out optimisation level and OS) */
 675         for (int i = 1; i < argc; ++i) {
 676                 const char *arg = argv[i];
 677                 if (arg[0] != '-')
 678                         continue;
 679
 680                 const char *option = &arg[1];
 681                 if (option[0] == 'O') {
 682                         sscanf(&option[1], "%d", &opt_level);
 683                 }
 684                 if (strcmp(arg, "-fwin32") == 0) {
 685                         firm_opt.os_support = OS_SUPPORT_MINGW;
 686                 } else if (strcmp(arg, "-fmac") == 0) {
 687                         firm_opt.os_support = OS_SUPPORT_MACHO;
 688                 } else if (strcmp(arg, "-flinux") == 0) {
 689                         firm_opt.os_support = OS_SUPPORT_LINUX;
 690                 }
 691         }
 692
 693         /* set target/os specific stuff */
 694         init_os_support();
 695
 696         /* apply optimisation level */
 697         switch(opt_level) {
 698         case 0:
 699                 set_option("no-opt");
 700                 break;
 701         case 1:
 702                 set_option("no-inline");
 703                 break;
 704         default:
 705         case 4:
 706                 set_option("strict-aliasing");
 707                 /* use_builtins = true; */
 708                 /* fallthrough */
 709         case 3:
 710                 set_option("cond-eval");
 711                 set_option("if-conv");
 712                 /* fallthrough */
 713         case 2:
 714                 set_option("inline");
 715                 set_option("deconv");
 716                 set_be_option("omitfp");
 717                 break;
 718         }
 719
 720         /* parse rest of options */
 721         lang_standard_t standard        = STANDARD_DEFAULT;
 722         unsigned        features_on     = 0;
 723         unsigned        features_off    = 0;
 724         filetype_t      forced_filetype = FILETYPE_AUTODETECT;
 725         bool            help_displayed  = false;
 726         bool            argument_errors = false;
 727         for (int i = 1; i < argc; ++i) {
 728                 const char *arg = argv[i];
 729                 if (arg[0] == '-' && arg[1] != '\0') {
 730                         /* an option */
 731                         const char *option = &arg[1];
 732                         if (option[0] == 'o') {
 733                                 GET_ARG_AFTER(outname, "-o");
 734                         } else if (option[0] == 'g') {
 735                                 set_be_option("debuginfo=stabs");
 736                                 set_be_option("omitfp=no");
 737                                 set_be_option("ia32-nooptcc=yes");
 738                         } else if (SINGLE_OPTION('c')) {
 739                                 mode = CompileAssemble;
 740                         } else if (SINGLE_OPTION('E')) {
 741                                 mode = PreprocessOnly;
 742                         } else if (SINGLE_OPTION('S')) {
 743                                 mode = Compile;
 744                         } else if (option[0] == 'O') {
 745                                 continue;
 746                         } else if (option[0] == 'I') {
 747                                 const char *opt;
 748                                 GET_ARG_AFTER(opt, "-I");
 749                                 add_flag(&cppflags_obst, "-I%s", opt);
 750                         } else if (option[0] == 'D') {
 751                                 const char *opt;
 752                                 GET_ARG_AFTER(opt, "-D");
 753                                 add_flag(&cppflags_obst, "-D%s", opt);
 754                         } else if (option[0] == 'U') {
 755                                 const char *opt;
 756                                 GET_ARG_AFTER(opt, "-U");
 757                                 add_flag(&cppflags_obst, "-U%s", opt);
 758                         } else if (option[0] == 'l') {
 759                                 const char *opt;
 760                                 GET_ARG_AFTER(opt, "-l");
 761                                 add_flag(&ldflags_obst, "-l%s", opt);
 762                         } else if (option[0] == 'L') {
 763                                 const char *opt;
 764                                 GET_ARG_AFTER(opt, "-L");
 765                                 add_flag(&ldflags_obst, "-L%s", opt);
 766                         } else if (SINGLE_OPTION('v')) {
 767                                 verbose = 1;
 768                         } else if (SINGLE_OPTION('w')) {
 769                                 memset(&warning, 0, sizeof(warning));
 770                         } else if (option[0] == 'x') {
 771                                 const char *opt;
 772                                 GET_ARG_AFTER(opt, "-x");
 773                                 forced_filetype = get_filetype_from_string(opt);
 774                                 if (forced_filetype == FILETYPE_UNKNOWN) {
 775                                         fprintf(stderr, "Unknown language '%s'\n", opt);
 776                                         argument_errors = true;
 777                                 }
 778                         } else if (streq(option, "M")) {
 779                                 mode = PreprocessOnly;
 780                                 add_flag(&cppflags_obst, "-M");
 781                         } else if (streq(option, "MMD") ||
 782                                    streq(option, "MD")) {
 783                             construct_dep_target = true;
 784                                 add_flag(&cppflags_obst, "-%s", option);
 785                         } else if (streq(option, "MM")  ||
 786                                    streq(option, "MP")) {
 787                                 add_flag(&cppflags_obst, "-%s", option);
 788                         } else if (streq(option, "MT") ||
 789                                    streq(option, "MQ") ||
 790                                    streq(option, "MF")) {
 791                                 const char *opt;
 792                                 GET_ARG_AFTER(opt, "-MT");
 793                                 add_flag(&cppflags_obst, "-%s", option);
 794                                 add_flag(&cppflags_obst, "%s", opt);
 795                         } else if (streq(option, "include")) {
 796                                 const char *opt;
 797                                 GET_ARG_AFTER(opt, "-include");
 798                                 add_flag(&cppflags_obst, "-include");
 799                                 add_flag(&cppflags_obst, "%s", opt);
 800                         } else if (streq(option, "isystem")) {
 801                                 const char *opt;
 802                                 GET_ARG_AFTER(opt, "-isystem");
 803                                 add_flag(&cppflags_obst, "-isystem");
 804                                 add_flag(&cppflags_obst, "%s", opt);
 805                         } else if (streq(option, "nostdinc")
 806                                         || streq(option, "trigraphs")) {
 807                                 /* pass these through to the preprocessor */
 808                                 add_flag(&cppflags_obst, "%s", arg);
 809                         } else if (streq(option, "pipe")) {
 810                                 /* here for gcc compatibility */
 811                         } else if (option[0] == 'f') {
 812                                 char const *orig_opt;
 813                                 GET_ARG_AFTER(orig_opt, "-f");
 814
 815                                 if (strstart(orig_opt, "align-loops=") ||
 816                                     strstart(orig_opt, "align-jumps=") ||
 817                                     strstart(orig_opt, "align-functions=")) {
 818                                         fprintf(stderr, "ignoring gcc option '-f%s'\n", orig_opt);
 819                                 } else if (streq(orig_opt, "verbose-asm")) {
 820                                         /* ignore: we always print verbose assembler */
 821                                 } else {
 822                                         char const *opt         = orig_opt;
 823                                         bool        truth_value = true;
 824                                         if (opt[0] == 'n' && opt[1] == 'o' && opt[2] == '-') {
 825                                                 truth_value = false;
 826                                                 opt += 3;
 827                                         }
 828
 829                                         if (streq(opt, "dollars-in-identifiers")) {
 830                                                 allow_dollar_in_symbol = truth_value;
 831                                         } if (streq(opt, "builtins")) {
 832                                                 use_builtins = truth_value;
 833                                         } else if (streq(opt, "short-wchar")) {
 834                                                 wchar_atomic_kind = truth_value ? ATOMIC_TYPE_USHORT
 835                                                         : ATOMIC_TYPE_INT;
 836                                         } else if (streq(opt, "syntax-only")) {
 837                                                 mode = truth_value ? ParseOnly : CompileAssembleLink;
 838                                         } else if (streq(opt, "omit-frame-pointer")) {
 839                                                 set_be_option(truth_value ? "omitfp" : "omitfp=no");
 840                                         } else if (streq(opt, "strength-reduce")) {
 841                                                 firm_option(truth_value ? "strength-red" : "no-strength-red");
 842                                         } else if (streq(opt, "fast-math")               ||
 843                                                    streq(opt, "jump-tables")             ||
 844                                                    streq(opt, "unroll-loops")            ||
 845                                                    streq(opt, "expensive-optimizations") ||
 846                                                    streq(opt, "common")                  ||
 847                                                    streq(opt, "PIC")                     ||
 848                                                    streq(opt, "align-loops")             ||
 849                                                    streq(opt, "align-jumps")             ||
 850                                                    streq(opt, "align-functions")) {
 851                                                 fprintf(stderr, "ignoring gcc option '-f%s'\n", orig_opt);
 852                                         } else {
 853                                                 int res = firm_option(orig_opt);
 854                                                 if (res == 0) {
 855                                                         fprintf(stderr, "error: unknown Firm option '-f%s'\n",
 856                                                                 orig_opt);
 857                                                         argument_errors = true;
 858                                                         continue;
 859                                                 } else if (res == -1) {
 860                                                         help_displayed = true;
 861                                                 }
 862                                         }
 863                                 }
 864                         } else if (option[0] == 'b') {
 865                                 const char *opt;
 866                                 GET_ARG_AFTER(opt, "-b");
 867                                 int res = firm_be_option(opt);
 868                                 if (res == 0) {
 869                                         fprintf(stderr, "error: unknown Firm backend option '-b %s'\n",
 870                                                 opt);
 871                                         argument_errors = true;
 872                                 } else if (res == -1) {
 873                                         help_displayed = true;
 874                                 } else if (strstart(opt, "isa=")) {
 875                                         strncpy(cpu_arch, opt, sizeof(cpu_arch));
 876                                 }
 877                         } else if (option[0] == 'W') {
 878                                 if (strstart(option + 1, "p,")) {
 879                                         // pass options directly to the preprocessor
 880                                         const char *opt;
 881                                         GET_ARG_AFTER(opt, "-Wp,");
 882                                         add_flag(&cppflags_obst, "-Wp,%s", opt);
 883                                 } else if (strstart(option + 1, "l,")) {
 884                                         // pass options directly to the linker
 885                                         const char *opt;
 886                                         GET_ARG_AFTER(opt, "-Wl,");
 887                                         add_flag(&ldflags_obst, "-Wl,%s", opt);
 888                                 } else if (streq(option + 1, "no-trigraphs")
 889                                                         || streq(option + 1, "undef")) {
 890                                         add_flag(&cppflags_obst, "%s", arg);
 891                                 } else {
 892                                         set_warning_opt(&option[1]);
 893                                 }
 894                         } else if (option[0] == 'm') {
 895                                 /* -m options */
 896                                 const char *opt;
 897                                 char arch_opt[64];
 898
 899                                 GET_ARG_AFTER(opt, "-m");
 900                                 if (strstart(opt, "arch=")) {
 901                                         GET_ARG_AFTER(opt, "-march=");
 902                                         snprintf(arch_opt, sizeof(arch_opt), "%s-arch=%s", cpu_arch, opt);
 903                                         int res = firm_be_option(arch_opt);
 904                                         if (res == 0)
 905                                                 argument_errors = true;
 906                                         else {
 907                                                 snprintf(arch_opt, sizeof(arch_opt), "%s-opt=%s", cpu_arch, opt);
 908                                                 int res = firm_be_option(arch_opt);
 909                                                 if (res == 0)
 910                                                         argument_errors = true;
 911                                         }
 912                                 } else if (strstart(opt, "tune=")) {
 913                                         GET_ARG_AFTER(opt, "-mtune=");
 914                                         snprintf(arch_opt, sizeof(arch_opt), "%s-opt=%s", cpu_arch, opt);
 915                                         int res = firm_be_option(arch_opt);
 916                                         if (res == 0)
 917                                                 argument_errors = true;
 918                                 } else if (strstart(opt, "cpu=")) {
 919                                         GET_ARG_AFTER(opt, "-mcpu=");
 920                                         snprintf(arch_opt, sizeof(arch_opt), "%s-arch=%s", cpu_arch, opt);
 921                                         int res = firm_be_option(arch_opt);
 922                                         if (res == 0)
 923                                                 argument_errors = true;
 924                                 } else if (strstart(opt, "fpmath=")) {
 925                                         GET_ARG_AFTER(opt, "-mfpmath=");
 926                                         if (streq(opt, "387"))
 927                                                 opt = "x87";
 928                                         else if (streq(opt, "sse"))
 929                                                 opt = "sse2";
 930                                         else {
 931                                                 fprintf(stderr, "error: option -mfpumath supports only 387 or sse\n");
 932                                                 argument_errors = true;
 933                                         }
 934                                         if (!argument_errors) {
 935                                                 snprintf(arch_opt, sizeof(arch_opt), "%s-fpunit=%s", cpu_arch, opt);
 936                                                 int res = firm_be_option(arch_opt);
 937                                                 if (res == 0)
 938                                                         argument_errors = true;
 939                                         }
 940                                 } else if (strstart(opt, "preferred-stack-boundary=")) {
 941                                         GET_ARG_AFTER(opt, "-mpreferred-stack-boundary=");
 942                                         snprintf(arch_opt, sizeof(arch_opt), "%s-stackalign=%s", cpu_arch, opt);
 943                                         int res = firm_be_option(arch_opt);
 944                                         if (res == 0)
 945                                                 argument_errors = true;
 946                                 } else if (streq(opt, "omit-leaf-frame-pointer")) {
 947                                         set_be_option("omitleaffp=1");
 948                                 } else if (streq(opt, "no-omit-leaf-frame-pointer")) {
 949                                         set_be_option("omitleaffp=0");
 950                                 } else {
 951                                         char *endptr;
 952                                         long int value = strtol(opt, &endptr, 10);
 953                                         if (*endptr != '\0') {
 954                                                 fprintf(stderr, "error: wrong option '-m %s'\n",  opt);
 955                                                 argument_errors = true;
 956                                         }
 957                                         if (value != 16 && value != 32 && value != 64) {
 958                                                 fprintf(stderr, "error: option -m supports only 16, 32 or 64\n");
 959                                                 argument_errors = true;
 960                                         } else {
 961                                                 machine_size = (unsigned int)value;
 962                                         }
 963                                 }
 964                         } else if (streq(option, "pg")) {
 965                                 set_be_option("gprof");
 966                                 add_flag(&ldflags_obst, "-pg");
 967                         } else if (streq(option, "pedantic") ||
 968                                    streq(option, "ansi")) {
 969                                 fprintf(stderr, "warning: ignoring gcc option '%s'\n", arg);
 970                         } else if (streq(option, "shared")) {
 971                                 add_flag(&ldflags_obst, "-shared");
 972                         } else if (strstart(option, "std=")) {
 973                                 const char *const o = &option[4];
 974                                 standard =
 975                                         streq(o, "c++")            ? STANDARD_CXX98   :
 976                                         streq(o, "c++98")          ? STANDARD_CXX98   :
 977                                         streq(o, "c89")            ? STANDARD_C89     :
 978                                         streq(o, "c99")            ? STANDARD_C99     :
 979                                         streq(o, "c9x")            ? STANDARD_C99     : // deprecated
 980                                         streq(o, "gnu++98")        ? STANDARD_GNUXX98 :
 981                                         streq(o, "gnu89")          ? STANDARD_GNU89   :
 982                                         streq(o, "gnu99")          ? STANDARD_GNU99   :
 983                                         streq(o, "gnu9x")          ? STANDARD_GNU99   : // deprecated
 984                                         streq(o, "iso9899:1990")   ? STANDARD_C89     :
 985                                         streq(o, "iso9899:199409") ? STANDARD_C90     :
 986                                         streq(o, "iso9899:1999")   ? STANDARD_C99     :
 987                                         streq(o, "iso9899:199x")   ? STANDARD_C99     : // deprecated
 988                                         (fprintf(stderr, "warning: ignoring gcc option '%s'\n", arg), standard);
 989                         } else if (streq(option, "version")) {
 990                                 print_cparser_version();
 991                         } else if (strstart(option, "print-file-name=")) {
 992                                 GET_ARG_AFTER(print_file_name_file, "-print-file-name=");
 993                         } else if (option[0] == '-') {
 994                                 /* double dash option */
 995                                 ++option;
 996                                 if (streq(option, "gcc")) {
 997                                         features_on  |=  _GNUC;
 998                                         features_off &= ~_GNUC;
 999                                 } else if (streq(option, "no-gcc")) {
1000                                         features_on  &= ~_GNUC;
1001                                         features_off |=  _GNUC;
1002                                 } else if (streq(option, "ms")) {
1003                                         features_on  |=  _MS;
1004                                         features_off &= ~_MS;
1005                                 } else if (streq(option, "no-ms")) {
1006                                         features_on  &= ~_MS;
1007                                         features_off |=  _MS;
1008                                 } else if (streq(option, "signed-chars")) {
1009                                         char_is_signed = true;
1010                                 } else if (streq(option, "unsigned-chars")) {
1011                                         char_is_signed = false;
1012                                 } else if (streq(option, "strict")) {
1013                                         strict_mode = true;
1014                                 } else if (streq(option, "lextest")) {
1015                                         mode = LexTest;
1016                                 } else if (streq(option, "benchmark")) {
1017                                         mode = BenchmarkParser;
1018                                 } else if (streq(option, "print-ast")) {
1019                                         mode = PrintAst;
1020                                 } else if (streq(option, "print-implicit-cast")) {
1021                                         print_implicit_casts = true;
1022                                 } else if (streq(option, "print-parenthesis")) {
1023                                         print_parenthesis = true;
1024                                 } else if (streq(option, "print-fluffy")) {
1025                                         mode = PrintFluffy;
1026                                 } else if (streq(option, "print-caml")) {
1027                                         mode = PrintCaml;
1028                                 } else if (streq(option, "version")) {
1029                                         print_cparser_version();
1030                                         exit(EXIT_SUCCESS);
1031                                 } else if (streq(option, "dump-function")) {
1032                                         ++i;
1033                                         if (i >= argc) {
1034                                                 fprintf(stderr, "error: "
1035                                                         "expected argument after '--dump-function'\n");
1036                                                 argument_errors = true;
1037                                                 break;
1038                                         }
1039                                         dumpfunction = argv[i];
1040                                         mode         = CompileDump;
1041                                 } else {
1042                                         fprintf(stderr, "error: unknown argument '%s'\n", arg);
1043                                         argument_errors = true;
1044                                 }
1045                         } else {
1046                                 fprintf(stderr, "error: unknown argument '%s'\n", arg);
1047                                 argument_errors = true;
1048                         }
1049                 } else {
1050                         filetype_t type = forced_filetype;
1051                         if (type == FILETYPE_AUTODETECT) {
1052                                 if (streq(arg, "-")) {
1053                                         /* - implicitly means C source file */
1054                                         type = FILETYPE_C;
1055                                 } else {
1056                                         const char *suffix = strrchr(arg, '.');
1057                                         /* Ensure there is at least one char before the suffix */
1058                                         if (suffix != NULL && suffix != arg) {
1059                                                 ++suffix;
1060                                                 type =
1061                                                         streq(suffix, "S")   ? FILETYPE_ASSEMBLER              :
1062                                                         streq(suffix, "a")   ? FILETYPE_OBJECT                 :
1063                                                         streq(suffix, "c")   ? FILETYPE_C                      :
1064                                                         streq(suffix, "cc")  ? FILETYPE_CXX                    :
1065                                                         streq(suffix, "cpp") ? FILETYPE_CXX                    :
1066                                                         streq(suffix, "cxx") ? FILETYPE_CXX                    :
1067                                                         streq(suffix, "h")   ? FILETYPE_C                      :
1068                                                         streq(suffix, "o")   ? FILETYPE_OBJECT                 :
1069                                                         streq(suffix, "s")   ? FILETYPE_PREPROCESSED_ASSEMBLER :
1070                                                         streq(suffix, "so")  ? FILETYPE_OBJECT                 :
1071                                                         FILETYPE_AUTODETECT;
1072                                         }
1073                                 }
1074
1075                                 if (type == FILETYPE_AUTODETECT) {
1076                                         fprintf(stderr, "'%s': file format not recognized\n", arg);
1077                                         continue;
1078                                 }
1079                         }
1080
1081                         file_list_entry_t *entry
1082                                 = obstack_alloc(&file_obst, sizeof(entry[0]));
1083                         memset(entry, 0, sizeof(entry[0]));
1084                         entry->name = arg;
1085                         entry->type = type;
1086
1087                         if (last_file != NULL) {
1088                                 last_file->next = entry;
1089                         } else {
1090                                 files = entry;
1091                         }
1092                         last_file = entry;
1093                 }
1094         }
1095
1096         if (print_file_name_file != NULL) {
1097                 print_file_name(print_file_name_file);
1098                 return 0;
1099         }
1100
1101         if (files == NULL) {
1102                 fprintf(stderr, "error: no input files specified\n");
1103                 argument_errors = true;
1104         }
1105
1106         if (help_displayed) {
1107                 return !argument_errors;
1108         }
1109         if (argument_errors) {
1110                 usage(argv[0]);
1111                 return 1;
1112         }
1113
1114         /* we do the lowering in ast2firm */
1115         firm_opt.lower_bitfields = FALSE;
1116
1117         gen_firm_init();
1118         init_symbol_table();
1119         init_types();
1120         init_typehash();
1121         init_basic_types();
1122         init_lexer();
1123         init_ast();
1124         init_parser();
1125         init_ast2firm();
1126         init_mangle();
1127
1128         if (construct_dep_target) {
1129                 if (outname != 0 && strlen(outname) >= 2) {
1130                         get_output_name(dep_target, sizeof(dep_target), outname, ".d");
1131                 } else {
1132                         get_output_name(dep_target, sizeof(dep_target), files->name, ".d");
1133                 }
1134         } else {
1135                 dep_target[0] = '\0';
1136         }
1137
1138         char outnamebuf[4096];
1139         if (outname == NULL) {
1140                 const char *filename = files->name;
1141
1142                 switch(mode) {
1143                 case BenchmarkParser:
1144                 case PrintAst:
1145                 case PrintFluffy:
1146                 case PrintCaml:
1147                 case LexTest:
1148                 case PreprocessOnly:
1149                 case ParseOnly:
1150                         outname = "-";
1151                         break;
1152                 case Compile:
1153                         get_output_name(outnamebuf, sizeof(outnamebuf), filename, ".s");
1154                         outname = outnamebuf;
1155                         break;
1156                 case CompileAssemble:
1157                         get_output_name(outnamebuf, sizeof(outnamebuf), filename, ".o");
1158                         outname = outnamebuf;
1159                         break;
1160                 case CompileDump:
1161                         get_output_name(outnamebuf, sizeof(outnamebuf), dumpfunction,
1162                                         ".vcg");
1163                         outname = outnamebuf;
1164                         break;
1165                 case CompileAssembleLink:
1166 #ifdef _WIN32
1167                         outname = "a.exe";
1168 #else
1169                         outname = "a.out";
1170 #endif
1171                         break;
1172                 }
1173         }
1174
1175         assert(outname != NULL);
1176
1177         FILE *out;
1178         if (streq(outname, "-")) {
1179                 out = stdout;
1180         } else {
1181                 out = fopen(outname, "w");
1182                 if (out == NULL) {
1183                         fprintf(stderr, "Couldn't open '%s' for writing: %s\n", outname,
1184                                         strerror(errno));
1185                         return 1;
1186                 }
1187         }
1188
1189         file_list_entry_t *file;
1190         for (file = files; file != NULL; file = file->next) {
1191                 char        asm_tempfile[1024];
1192                 const char *filename = file->name;
1193                 filetype_t  filetype = file->type;
1194
1195                 if (filetype == FILETYPE_OBJECT)
1196                         continue;
1197
1198                 FILE *in = NULL;
1199                 if (mode == LexTest) {
1200                         if (in == NULL)
1201                                 in = open_file(filename);
1202                         lextest(in, filename);
1203                         fclose(in);
1204                         exit(EXIT_SUCCESS);
1205                 }
1206
1207                 FILE *preprocessed_in = NULL;
1208                 switch (filetype) {
1209                         case FILETYPE_C:         filetype = FILETYPE_PREPROCESSED_C;         goto preprocess;
1210                         case FILETYPE_CXX:       filetype = FILETYPE_PREPROCESSED_CXX;       goto preprocess;
1211                         case FILETYPE_ASSEMBLER: filetype = FILETYPE_PREPROCESSED_ASSEMBLER; goto preprocess;
1212 preprocess:
1213                                 /* no support for input on FILE* yet */
1214                                 if (in != NULL)
1215                                         panic("internal compiler error: in for preprocessor != NULL");
1216
1217                                 preprocessed_in = preprocess(filename);
1218                                 if (mode == PreprocessOnly) {
1219                                         copy_file(out, preprocessed_in);
1220                                         int result = pclose(preprocessed_in);
1221                                         fclose(out);
1222                                         return result;
1223                                 }
1224
1225                                 in = preprocessed_in;
1226                                 break;
1227
1228                         default:
1229                                 break;
1230                 }
1231
1232                 FILE *asm_out;
1233                 if (mode == Compile) {
1234                         asm_out = out;
1235                 } else {
1236                         asm_out = make_temp_file(asm_tempfile, sizeof(asm_tempfile), "ccs");
1237                 }
1238
1239                 if (in == NULL)
1240                         in = open_file(filename);
1241
1242                 /* preprocess and compile */
1243                 if (filetype == FILETYPE_PREPROCESSED_C) {
1244                         char const* invalid_mode;
1245                         switch (standard) {
1246                                 case STANDARD_ANSI:
1247                                 case STANDARD_C89:   c_mode = _C89;                break;
1248                                 /* TODO ^v determine difference between these two */
1249                                 case STANDARD_C90:   c_mode = _C89;                break;
1250                                 case STANDARD_C99:   c_mode = _C89 | _C99;         break;
1251                                 case STANDARD_GNU89: c_mode = _C89 |        _GNUC; break;
1252
1253 default_c_warn:
1254                                         fprintf(stderr,
1255                                                         "warning: command line option \"-std=%s\" is not valid for C\n",
1256                                                         invalid_mode);
1257                                         /* FALLTHROUGH */
1258                                 case STANDARD_DEFAULT:
1259                                 case STANDARD_GNU99:   c_mode = _C89 | _C99 | _GNUC; break;
1260
1261                                 case STANDARD_CXX98:   invalid_mode = "c++98"; goto default_c_warn;
1262                                 case STANDARD_GNUXX98: invalid_mode = "gnu98"; goto default_c_warn;
1263                         }
1264                         goto do_parsing;
1265                 } else if (filetype == FILETYPE_PREPROCESSED_CXX) {
1266                         char const* invalid_mode;
1267                         switch (standard) {
1268                                 case STANDARD_C89:   invalid_mode = "c89";   goto default_cxx_warn;
1269                                 case STANDARD_C90:   invalid_mode = "c90";   goto default_cxx_warn;
1270                                 case STANDARD_C99:   invalid_mode = "c99";   goto default_cxx_warn;
1271                                 case STANDARD_GNU89: invalid_mode = "gnu89"; goto default_cxx_warn;
1272                                 case STANDARD_GNU99: invalid_mode = "gnu99"; goto default_cxx_warn;
1273
1274                                 case STANDARD_ANSI:
1275                                 case STANDARD_CXX98: c_mode = _CXX; break;
1276
1277 default_cxx_warn:
1278                                         fprintf(stderr,
1279                                                         "warning: command line option \"-std=%s\" is not valid for C++\n",
1280                                                         invalid_mode);
1281                                 case STANDARD_DEFAULT:
1282                                 case STANDARD_GNUXX98: c_mode = _CXX | _GNUC; break;
1283                         }
1284
1285 do_parsing:
1286                         c_mode |= features_on;
1287                         c_mode &= ~features_off;
1288                         init_tokens();
1289                         translation_unit_t *const unit = do_parsing(in, filename);
1290
1291                         /* prints the AST even if errors occurred */
1292                         if (mode == PrintAst) {
1293                                 type_set_output(out);
1294                                 ast_set_output(out);
1295                                 print_ast(unit);
1296                         }
1297
1298                         if (error_count > 0) {
1299                                 /* parsing failed because of errors */
1300                                 fprintf(stderr, "%u error(s), %u warning(s)\n", error_count,
1301                                         warning_count);
1302                                 result = EXIT_FAILURE;
1303                                 continue;
1304                         } else if (warning_count > 0) {
1305                                 fprintf(stderr, "%u warning(s)\n", warning_count);
1306                         }
1307
1308                         if (in == preprocessed_in) {
1309                                 int pp_result = pclose(preprocessed_in);
1310                                 if (pp_result != EXIT_SUCCESS) {
1311                                         exit(EXIT_FAILURE);
1312                                 }
1313                         }
1314
1315                         if (mode == BenchmarkParser) {
1316                                 return result;
1317                         } else if (mode == PrintFluffy) {
1318                                 write_fluffy_decls(out, unit);
1319                                 continue;
1320                         } else if (mode == PrintCaml) {
1321                                 write_caml_decls(out, unit);
1322                                 continue;
1323                         }
1324
1325                         translation_unit_to_firm(unit);
1326
1327                         if (mode == ParseOnly) {
1328                                 continue;
1329                         }
1330
1331                         if (mode == CompileDump) {
1332                                 /* find irg */
1333                                 ident    *id     = new_id_from_str(dumpfunction);
1334                                 ir_graph *irg    = NULL;
1335                                 int       n_irgs = get_irp_n_irgs();
1336                                 for (int i = 0; i < n_irgs; ++i) {
1337                                         ir_graph *tirg   = get_irp_irg(i);
1338                                         ident    *irg_id = get_entity_ident(get_irg_entity(tirg));
1339                                         if (irg_id == id) {
1340                                                 irg = tirg;
1341                                                 break;
1342                                         }
1343                                 }
1344
1345                                 if (irg == NULL) {
1346                                         fprintf(stderr, "No graph for function '%s' found\n",
1347                                                 dumpfunction);
1348                                         exit(1);
1349                                 }
1350
1351                                 dump_ir_block_graph_file(irg, out);
1352                                 fclose(out);
1353                                 exit(0);
1354                         }
1355
1356                         gen_firm_finish(asm_out, filename, /*c_mode=*/1,
1357                                         have_const_functions);
1358                         if (asm_out != out) {
1359                                 fclose(asm_out);
1360                         }
1361                 } else if (filetype == FILETYPE_PREPROCESSED_ASSEMBLER) {
1362                         copy_file(asm_out, in);
1363                         if (in == preprocessed_in) {
1364                                 int pp_result = pclose(preprocessed_in);
1365                                 if (pp_result != EXIT_SUCCESS) {
1366                                         return pp_result;
1367                                 }
1368                         }
1369                         if (asm_out != out) {
1370                                 fclose(asm_out);
1371                         }
1372                 }
1373
1374                 if (mode == Compile)
1375                         continue;
1376
1377                 /* if we're here then we have preprocessed assembly */
1378                 filename = asm_tempfile;
1379                 filetype = FILETYPE_PREPROCESSED_ASSEMBLER;
1380
1381                 /* assemble */
1382                 if (filetype == FILETYPE_PREPROCESSED_ASSEMBLER) {
1383                         char        temp[1024];
1384                         const char *filename_o;
1385                         if (mode == CompileAssemble) {
1386                                 fclose(out);
1387                                 filename_o = outname;
1388                         } else {
1389                                 FILE *tempf = make_temp_file(temp, sizeof(temp), "cco");
1390                                 fclose(tempf);
1391                                 filename_o = temp;
1392                         }
1393
1394                         assemble(filename_o, filename);
1395
1396                         size_t len = strlen(filename_o) + 1;
1397                         filename = obstack_copy(&file_obst, filename_o, len);
1398                         filetype = FILETYPE_OBJECT;
1399                 }
1400
1401                 /* ok we're done here, process next file */
1402                 file->name = filename;
1403                 file->type = filetype;
1404         }
1405
1406         if (result != EXIT_SUCCESS)
1407                 return result;
1408
1409         /* link program file */
1410         if (mode == CompileAssembleLink) {
1411                 obstack_1grow(&ldflags_obst, '\0');
1412                 const char *flags = obstack_finish(&ldflags_obst);
1413
1414                 /* construct commandline */
1415                 obstack_printf(&file_obst, "%s", LINKER);
1416                 for (file_list_entry_t *entry = files; entry != NULL;
1417                                 entry = entry->next) {
1418                         if (entry->type != FILETYPE_OBJECT)
1419                                 continue;
1420
1421                         add_flag(&file_obst, "%s", entry->name);
1422                 }
1423
1424                 add_flag(&file_obst, "-o");
1425                 add_flag(&file_obst, outname);
1426                 obstack_printf(&file_obst, "%s", flags);
1427                 obstack_1grow(&file_obst, '\0');
1428
1429                 char *commandline = obstack_finish(&file_obst);
1430
1431                 if (verbose) {
1432                         puts(commandline);
1433                 }
1434                 int err = system(commandline);
1435                 if (err != EXIT_SUCCESS) {
1436                         fprintf(stderr, "linker reported an error\n");
1437                         exit(1);
1438                 }
1439         }
1440
1441         obstack_free(&cppflags_obst, NULL);
1442         obstack_free(&ldflags_obst, NULL);
1443         obstack_free(&file_obst, NULL);
1444
1445         exit_mangle();
1446         exit_ast2firm();
1447         exit_parser();
1448         exit_ast();
1449         exit_lexer();
1450         exit_typehash();
1451         exit_types();
1452         exit_tokens();
1453         exit_symbol_table();
1454         return 0;
1455 }