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