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