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