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 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <stdbool.h>
  25 #include <errno.h>
  26 #include <string.h>
  27 #include <assert.h>
  28
  29 #ifdef _WIN32
  30
  31 #include <fcntl.h>
  32 #include <io.h>
  33
  34 /* no eXecute on Win32 */
  35 #define X_OK 0
  36 #define W_OK 2
  37 #define R_OK 4
  38
  39 #define O_RDWR          _O_RDWR
  40 #define O_CREAT         _O_CREAT
  41 #define O_EXCL          _O_EXCL
  42 #define O_BINARY        _O_BINARY
  43
  44 /* remap some names, we are not in the POSIX world */
  45 #define access(fname, mode)      _access(fname, mode)
  46 #define mktemp(tmpl)             _mktemp(tmpl)
  47 #define open(fname, oflag, mode) _open(fname, oflag, mode)
  48 #define fdopen(fd, mode)         _fdopen(fd, mode)
  49 #define popen(cmd, mode)         _popen(cmd, mode)
  50 #define pclose(file)             _pclose(file)
  51
  52 #else
  53 #include <unistd.h>
  54 #define HAVE_MKSTEMP
  55 #endif
  56
  57 #ifndef WITH_LIBCORE
  58 #define WITH_LIBCORE
  59 #endif
  60
  61 #include <libfirm/firm.h>
  62 #include <libfirm/be.h>
  63
  64 #include "lexer.h"
  65 #include "token_t.h"
  66 #include "types.h"
  67 #include "type_hash.h"
  68 #include "parser.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 "revision.h"
  77 #include "warning.h"
  78
  79 #ifndef PREPROCESSOR
  80 #define PREPROCESSOR "cpp -std=c99 -U__WCHAR_TYPE__ -D__WCHAR_TYPE__=int"
  81 #endif
  82
  83 #ifndef LINKER
  84 #define LINKER    "gcc -m32"
  85 #endif
  86
  87 #ifndef ASSEMBLER
  88 #define ASSEMBLER "as --32"
  89 #endif
  90
  91 /** The current c mode/dialect. */
  92 unsigned int c_mode = _C89|_C99|_GNUC;
  93
  94 /** The 'machine size', 16, 32 or 64 bit, 32bit is the default. */
  95 unsigned int machine_size = 32;
  96
  97 /** true if the char type is signed. */
  98 bool char_is_signed = true;
  99
 100 /** true for strict language checking. */
 101 bool strict_mode = false;
 102
 103 /* to switch on printing of implicit casts */
 104 extern bool print_implicit_casts;
 105
 106 /* to switch on printing of  srenthesis to indicate operator precedence */
 107 extern bool print_parenthesis;
 108
 109 static int            verbose;
 110 static struct obstack cppflags_obst, ldflags_obst;
 111
 112 #if defined(_DEBUG) || defined(FIRM_DEBUG)
 113 /**
 114  * Debug printf implementation.
 115  *
 116  * @param fmt  printf style format parameter
 117  */
 118 void dbg_printf(const char *fmt, ...)
 119 {
 120         va_list list;
 121
 122         if (firm_dump.debug_print) {
 123                 va_start(list, fmt);
 124                 vprintf(fmt, list);
 125                 va_end(list);
 126         }  /* if */
 127 }
 128 #endif /* defined(_DEBUG) || defined(FIRM_DEBUG) */
 129
 130 static void initialize_firm(void)
 131 {
 132         firm_early_init();
 133
 134         dump_consts_local(1);
 135         dump_keepalive_edges(1);
 136 }
 137
 138 static void get_output_name(char *buf, size_t buflen, const char *inputname,
 139                             const char *newext)
 140 {
 141         size_t last_dot = 0xffffffff;
 142         size_t i = 0;
 143
 144         if(inputname == NULL) {
 145                 snprintf(buf, buflen, "a%s", newext);
 146                 return;
 147         }
 148
 149         for(const char *c = inputname; *c != 0; ++c) {
 150                 if(*c == '.')
 151                         last_dot = i;
 152                 ++i;
 153         }
 154         if(last_dot == 0xffffffff)
 155                 last_dot = i;
 156
 157         if(last_dot >= buflen)
 158                 panic("filename too long");
 159         memcpy(buf, inputname, last_dot);
 160
 161         size_t extlen = strlen(newext) + 1;
 162         if(extlen + last_dot >= buflen)
 163                 panic("filename too long");
 164         memcpy(buf+last_dot, newext, extlen);
 165 }
 166
 167 static translation_unit_t *do_parsing(FILE *const in, const char *const input)
 168 {
 169         lexer_open_stream(in, input);
 170         translation_unit_t *unit = parse();
 171         return unit;
 172 }
 173
 174 static void lextest(FILE *in, const char *fname)
 175 {
 176         lexer_open_stream(in, fname);
 177
 178         do {
 179                 lexer_next_preprocessing_token();
 180                 print_token(stdout, &lexer_token);
 181                 puts("");
 182         } while(lexer_token.type != T_EOF);
 183 }
 184
 185 static FILE* preprocess(FILE* in, const char *fname)
 186 {
 187         char buf[4096];
 188         obstack_1grow(&cppflags_obst, '\0');
 189         const char *flags = obstack_finish(&cppflags_obst);
 190
 191         if(in != stdin) {
 192                 snprintf(buf, sizeof(buf), PREPROCESSOR " %s %s", flags, fname);
 193         } else {
 194                 /* read from stdin */
 195                 snprintf(buf, sizeof(buf), PREPROCESSOR " %s -", flags);
 196         }
 197
 198         if(verbose) {
 199                 puts(buf);
 200         }
 201         FILE* f = popen(buf, "r");
 202         if (f == NULL) {
 203                 fprintf(stderr, "invoking preprocessor failed\n");
 204                 exit(1);
 205         }
 206         return f;
 207 }
 208
 209 static void do_link(const char *out, const char *in)
 210 {
 211         char buf[4096];
 212         obstack_1grow(&ldflags_obst, '\0');
 213         const char *flags = obstack_finish(&ldflags_obst);
 214
 215         snprintf(buf, sizeof(buf), LINKER " %s -o %s %s", flags, out, in);
 216         if(verbose) {
 217                 puts(buf);
 218         }
 219         int err = system(buf);
 220         if(err != 0) {
 221                 fprintf(stderr, "linker reported an error\n");
 222                 exit(1);
 223         }
 224 }
 225
 226 static void assemble(const char *out, const char *in)
 227 {
 228         char buf[4096];
 229
 230         snprintf(buf, sizeof(buf), "%s %s -o %s", ASSEMBLER, in, out);
 231         if(verbose) {
 232                 puts(buf);
 233         }
 234
 235         int err = system(buf);
 236         if(err != 0) {
 237                 fprintf(stderr, "assembler reported an error\n");
 238                 exit(1);
 239         }
 240 }
 241
 242 static const char *try_dir(const char *dir)
 243 {
 244         if(dir == NULL)
 245                 return dir;
 246         if(access(dir, R_OK | W_OK | X_OK) == 0)
 247                 return dir;
 248         return NULL;
 249 }
 250
 251 static const char *get_tempdir(void)
 252 {
 253         static const char *tmpdir = NULL;
 254
 255         if(tmpdir != NULL)
 256                 return tmpdir;
 257
 258         if(tmpdir == NULL)
 259                 tmpdir = try_dir(getenv("TMPDIR"));
 260         if(tmpdir == NULL)
 261                 tmpdir = try_dir(getenv("TMP"));
 262         if(tmpdir == NULL)
 263                 tmpdir = try_dir(getenv("TEMP"));
 264
 265 #ifdef P_tmpdir
 266         if(tmpdir == NULL)
 267                 tmpdir = try_dir(P_tmpdir);
 268 #endif
 269
 270         if(tmpdir == NULL)
 271                 tmpdir = try_dir("/var/tmp");
 272         if(tmpdir == NULL)
 273                 tmpdir = try_dir("/usr/tmp");
 274         if(tmpdir == NULL)
 275                 tmpdir = try_dir("/tmp");
 276
 277         if(tmpdir == NULL)
 278                 tmpdir = ".";
 279
 280         return tmpdir;
 281 }
 282
 283 #ifndef HAVE_MKSTEMP
 284 /* cheap and nasty mkstemp replacement */
 285 static int mkstemp(char *templ)
 286 {
 287         mktemp(templ);
 288         return open(templ, O_RDWR|O_CREAT|O_EXCL|O_BINARY, 0600);
 289 }
 290 #endif
 291
 292 /**
 293  * an own version of tmpnam, which: writes in a buffer, appends a user specified
 294  * suffix, emits no warnings during linking (like glibc/gnu ld do for tmpnam)...
 295  */
 296 static FILE *make_temp_file(char *buffer, size_t buflen,
 297                             const char *prefix, const char *suffix)
 298 {
 299         const char *tempdir = get_tempdir();
 300
 301         /* oh well... mkstemp doesn't accept a suffix after XXXXXX... */
 302         (void) suffix;
 303         suffix = "";
 304
 305         snprintf(buffer, buflen, "%s/%sXXXXXX%s", tempdir, prefix, suffix);
 306
 307         int fd = mkstemp(buffer);
 308         if(fd == -1) {
 309                 fprintf(stderr, "couldn't create temporary file: %s\n",
 310                         strerror(errno));
 311                 exit(1);
 312         }
 313         FILE *out = fdopen(fd, "w");
 314         if(out == NULL) {
 315                 fprintf(stderr, "couldn't create temporary file FILE*\n");
 316                 exit(1);
 317         }
 318
 319         return out;
 320 }
 321
 322 /**
 323  * Do the necessary lowering for compound parameters.
 324  */
 325 void lower_compound_params(void)
 326 {
 327         lower_params_t params;
 328
 329         params.def_ptr_alignment    = 4;
 330         params.flags                = LF_COMPOUND_RETURN | LF_RETURN_HIDDEN;
 331         params.hidden_params        = ADD_HIDDEN_ALWAYS_IN_FRONT;
 332         params.find_pointer_type    = NULL;
 333         params.ret_compound_in_regs = NULL;
 334         lower_calls_with_compounds(&params);
 335 }
 336
 337 typedef enum compile_mode_t {
 338         BenchmarkParser,
 339         ParseOnly,
 340         Compile,
 341         CompileDump,
 342         CompileAssemble,
 343         CompileAssembleLink,
 344         LexTest,
 345         PrintAst,
 346         PrintFluffy
 347 } compile_mode_t;
 348
 349 static void usage(const char *argv0)
 350 {
 351         fprintf(stderr, "Usage %s input [-o output] [-c]\n", argv0);
 352 }
 353
 354 int main(int argc, char **argv)
 355 {
 356         initialize_firm();
 357
 358         const char     *input        = NULL;
 359         const char     *outname      = NULL;
 360         const char     *dumpfunction = NULL;
 361         compile_mode_t  mode         = CompileAssembleLink;
 362         int             opt_level    = 1;
 363
 364         obstack_init(&cppflags_obst);
 365         obstack_init(&ldflags_obst);
 366
 367 #define GET_ARG_AFTER(def, args)                                             \
 368         def = &arg[sizeof(args)-1];                                              \
 369         if(def[0] == '\0') {                                                     \
 370                 ++i;                                                                 \
 371                 if(i >= argc) {                                                      \
 372                         fprintf(stderr, "error: expected argument after '" args "'\n");  \
 373                         argument_errors = true;                                          \
 374                         break;                                                           \
 375                 }                                                                    \
 376                 def = argv[i];                                                       \
 377                 if(def[0] == '-' && def[1] != '\0') {                                \
 378                         fprintf(stderr, "error: expected argument after '" args "'\n");  \
 379                         argument_errors = true;                                          \
 380                         continue;                                                        \
 381                 }                                                                    \
 382         }
 383
 384 #define SINGLE_OPTION(ch) (option[0] == (ch) && option[1] == '\0')
 385
 386         /* early options parsing (find out optimisation level) */
 387         for(int i = 1; i < argc; ++i) {
 388                 const char *arg = argv[i];
 389                 if(arg[0] != '-')
 390                         continue;
 391
 392                 const char *option = &arg[1];
 393                 if(option[0] == 'O') {
 394                         sscanf(&option[1], "%d", &opt_level);
 395                 }
 396         }
 397
 398         /* apply optimisation level */
 399         switch(opt_level) {
 400         case 0:
 401                 firm_option("no-opt");
 402                 break;
 403         case 1:
 404                 firm_option("no-inline");
 405                 break;
 406         default:
 407         case 4:
 408                 firm_option("strict-aliasing");
 409                 /* fallthrough */
 410         case 3:
 411                 firm_option("cond-eval");
 412                 firm_option("if-conv");
 413                 /* fallthrough */
 414         case 2:
 415                 firm_option("inline");
 416                 firm_option("no-strength-red");
 417                 firm_option("deconv");
 418                 firm_be_option("omitfp");
 419                 break;
 420         }
 421
 422         /* parse rest of options */
 423         bool help_displayed  = false;
 424         bool argument_errors = false;
 425         for(int i = 1; i < argc; ++i) {
 426                 const char *arg = argv[i];
 427                 if(arg[0] == '-') {
 428                         /* an option */
 429                         const char *option = &arg[1];
 430                         if(option[0] == 'o') {
 431                                 GET_ARG_AFTER(outname, "-o");
 432                         } else if(option[0] == 'g') {
 433                                 firm_be_option("stabs=yes");
 434                                 firm_be_option("omitfp=no");
 435                                 firm_be_option("ia32-nooptcc=yes");
 436                         } else if(SINGLE_OPTION('c')) {
 437                                 mode = CompileAssemble;
 438                         } else if(SINGLE_OPTION('S')) {
 439                                 mode = Compile;
 440                         } else if(option[0] == 'O') {
 441                                 continue;
 442                         } else if(option[0] == 'I') {
 443                                 const char *opt;
 444                                 GET_ARG_AFTER(opt, "-I");
 445                                 obstack_printf(&cppflags_obst, " -I%s", opt);
 446                         } else if(option[0] == 'D') {
 447                                 const char *opt;
 448                                 GET_ARG_AFTER(opt, "-D");
 449                                 obstack_printf(&cppflags_obst, " -D%s", opt);
 450                         } else if(option[0] == 'U') {
 451                                 const char *opt;
 452                                 GET_ARG_AFTER(opt, "-U");
 453                                 obstack_printf(&cppflags_obst, " -U%s", opt);
 454                         } else if(option[0] == 'l') {
 455                                 const char *opt;
 456                                 GET_ARG_AFTER(opt, "-l");
 457                                 obstack_printf(&ldflags_obst, " -l%s", opt);
 458                         } else if(option[0] == 'L') {
 459                                 const char *opt;
 460                                 GET_ARG_AFTER(opt, "-L");
 461                                 obstack_printf(&ldflags_obst, " -L%s", opt);
 462                         } else if(SINGLE_OPTION('v')) {
 463                                 verbose = 1;
 464                         } else if(SINGLE_OPTION('w')) {
 465                                 inhibit_all_warnings = true;
 466                         } else if(option[0] == 'f') {
 467                                 const char *opt;
 468                                 GET_ARG_AFTER(opt, "-f");
 469
 470                                 if(strcmp(opt, "syntax-only") == 0) {
 471                                         mode = ParseOnly;
 472                                 } else if(strcmp(opt, "omit-frame-pointer") == 0) {
 473                                         firm_be_option("omitfp");
 474                                 } else if(strcmp(opt, "no-omit-frame-pointer") == 0) {
 475                                         firm_be_option("omitfp=no");
 476                                 } else {
 477                                         int res = firm_option(opt);
 478                                         if (res == 0) {
 479                                                 fprintf(stderr, "error: unknown Firm option '-f %s'\n",
 480                                                         opt);
 481                                                 argument_errors = true;
 482                                                 continue;
 483                                         } else if (res == -1) {
 484                                                 help_displayed = true;
 485                                         }
 486                                 }
 487                         } else if(option[0] == 'b') {
 488                                 const char *opt;
 489                                 GET_ARG_AFTER(opt, "-b");
 490                                 int res = firm_be_option(opt);
 491                                 if (res == 0) {
 492                                         fprintf(stderr, "error: unknown Firm backend option '-b %s'\n",
 493                                                 opt);
 494                                         argument_errors = true;
 495                                 } else if (res == -1) {
 496                                         help_displayed = true;
 497                                 }
 498                         } else if(option[0] == 'W') {
 499                                 set_warning_opt(&option[1]);
 500                         } else if(option[0] == 'm') {
 501                                 const char *opt;
 502                                 GET_ARG_AFTER(opt, "-m");
 503                                 char *endptr;
 504                                 long int value = strtol(opt, &endptr, 10);
 505                                 if (*endptr != '\0') {
 506                                         fprintf(stderr, "error: wrong option '-m %s'\n",  opt);
 507                                         argument_errors = true;
 508                                 }
 509                                 if (value != 16 && value != 32 && value != 64) {
 510                                         fprintf(stderr, "error: option -m supports only 16, 32 or 64\n");
 511                                         argument_errors = true;
 512                                 } else {
 513                                         machine_size = (unsigned int)value;
 514                                 }
 515                         } else if (option[0] == '\0') {
 516                                 if(input != NULL) {
 517                                         fprintf(stderr, "error: multiple input files specified\n");
 518                                         argument_errors = true;
 519                                 } else {
 520                                         input = arg;
 521                                 }
 522                         } else if(strcmp(option, "pedantic") == 0) {
 523                                 fprintf(stderr, "warning: ignoring gcc option '%s'\n", arg);
 524                         } else if(strncmp(option, "std=", 4) == 0) {
 525                                 fprintf(stderr, "warning: ignoring gcc option '%s'\n", arg);
 526                         } else if (option[0] == '-') {
 527                                 /* double dash option */
 528                                 ++option;
 529                                 if(strcmp(option, "gcc") == 0) {
 530                                         c_mode |= _GNUC;
 531                                 } else if(strcmp(option, "no-gcc") == 0) {
 532                                         c_mode &= ~_GNUC;
 533                                 } else if(strcmp(option, "ms") == 0) {
 534                                         c_mode |= _MS;
 535                                 } else if(strcmp(option, "no-ms") == 0) {
 536                                         c_mode &= ~_MS;
 537                                 } else if(strcmp(option, "signed-chars") == 0) {
 538                                         char_is_signed = true;
 539                                 } else if(strcmp(option, "unsigned-chars") == 0) {
 540                                         char_is_signed = false;
 541                                 } else if(strcmp(option, "strict") == 0) {
 542                                         strict_mode = true;
 543                                 } else if(strcmp(option, "lextest") == 0) {
 544                                         mode = LexTest;
 545                                 } else if(strcmp(option, "benchmark") == 0) {
 546                                         mode = BenchmarkParser;
 547                                 } else if(strcmp(option, "print-ast") == 0) {
 548                                         mode = PrintAst;
 549                                 } else if(strcmp(option, "print-implicit-cast") == 0) {
 550                                         print_implicit_casts = true;
 551                                 } else if(strcmp(option, "print-parenthesis") == 0) {
 552                                         print_parenthesis = true;
 553                                 } else if(strcmp(option, "print-fluffy") == 0) {
 554                                         mode = PrintFluffy;
 555                                 } else if(strcmp(option, "version") == 0) {
 556                                         firm_version_t ver;
 557                                         firm_get_version(&ver);
 558                                         printf("cparser (%s) using libFirm (%u.%u",
 559                                                cparser_REVISION, ver.major, ver.minor);
 560                                         if(ver.revision[0] != 0) {
 561                                                 putchar(' ');
 562                                                 fputs(ver.revision, stdout);
 563                                         }
 564                                         if(ver.build[0] != 0) {
 565                                                 putchar(' ');
 566                                                 fputs(ver.build, stdout);
 567                                         }
 568                                         puts(")\n");
 569                                         exit(EXIT_SUCCESS);
 570                                 } else if(strcmp(option, "dump-function") == 0) {
 571                                         ++i;
 572                                         if(i >= argc) {
 573                                                 fprintf(stderr, "error: "
 574                                                         "expected argument after '--dump-function'\n");
 575                                                 argument_errors = true;
 576                                                 break;
 577                                         }
 578                                         dumpfunction = argv[i];
 579                                         mode         = CompileDump;
 580                                 } else {
 581                                         fprintf(stderr, "error: unknown argument '%s'\n", arg);
 582                                         argument_errors = true;
 583                                 }
 584                         } else {
 585                                 fprintf(stderr, "error: unknown argument '%s'\n", arg);
 586                                 argument_errors = true;
 587                         }
 588                 } else {
 589                         if(input != NULL) {
 590                                 fprintf(stderr, "error: multiple input files specified\n");
 591                                 argument_errors = true;
 592                         } else {
 593                                 input = arg;
 594                         }
 595                 }
 596         }
 597
 598         /* we do the lowering in ast2firm */
 599         firm_opt.lower_bitfields = FALSE;
 600
 601         if(help_displayed) {
 602                 return !argument_errors;
 603         }
 604         if(argument_errors) {
 605                 usage(argv[0]);
 606                 return 1;
 607         }
 608
 609         gen_firm_init();
 610         init_symbol_table();
 611         init_tokens();
 612         init_types();
 613         init_typehash();
 614         init_basic_types();
 615         init_lexer();
 616         init_ast();
 617         init_parser();
 618         init_ast2firm();
 619
 620         FILE *out = NULL;
 621         char  outnamebuf[4096];
 622         if(outname == NULL) {
 623                 switch(mode) {
 624                 case BenchmarkParser:
 625                 case PrintAst:
 626                 case PrintFluffy:
 627                 case LexTest:
 628                         if(outname == NULL)
 629                                 outname = "-";
 630                         break;
 631                 case ParseOnly:
 632                         break;
 633                 case Compile:
 634                         get_output_name(outnamebuf, sizeof(outnamebuf), input, ".s");
 635                         outname = outnamebuf;
 636                         break;
 637                 case CompileAssemble:
 638                         get_output_name(outnamebuf, sizeof(outnamebuf), input, ".o");
 639                         outname = outnamebuf;
 640                         break;
 641                 case CompileDump:
 642                         get_output_name(outnamebuf, sizeof(outnamebuf), dumpfunction,
 643                                         ".vcg");
 644                         outname = outnamebuf;
 645                         break;
 646                 case CompileAssembleLink:
 647                         outname = "a.out";
 648                         break;
 649                 }
 650         }
 651
 652         if(outname != NULL) {
 653                 if(strcmp(outname, "-") == 0) {
 654                         out = stdout;
 655                 } else {
 656                         out = fopen(outname, "w");
 657                         if(out == NULL) {
 658                                 fprintf(stderr, "Couldn't open '%s' for writing: %s\n", outname,
 659                                         strerror(errno));
 660                                 return 1;
 661                         }
 662                 }
 663         }
 664
 665         FILE *in;
 666         if(input == NULL) {
 667                 fprintf(stderr, "%s: no input files\n", argv[0]);
 668                 return 1;
 669         } else if(strcmp(input, "-") == 0) {
 670                 in    = stdin;
 671                 input = "<stdin>";
 672         } else {
 673                 in = fopen(input, "r");
 674                 if(in == NULL) {
 675                         fprintf(stderr, "Couldn't open '%s': %s\n", input, strerror(errno));
 676                         return 1;
 677                 }
 678         }
 679
 680         if(mode == LexTest) {
 681                 lextest(in, input);
 682                 fclose(in);
 683                 return 0;
 684         }
 685
 686         FILE *preprocessed_in = preprocess(in, input);
 687         translation_unit_t *const unit = do_parsing(preprocessed_in, input);
 688         int result = pclose(preprocessed_in);
 689         if(result != 0) {
 690                 return result;
 691         }
 692         if(unit == NULL) {
 693                 /* parsing failed because of errors */
 694                 fprintf(stderr, "%u error(s), %u warning(s)\n", error_count, warning_count);
 695                 return EXIT_FAILURE;
 696         }
 697         if (warning_count > 0) {
 698                 fprintf(stderr, "%u warning(s)\n", warning_count);
 699         }
 700
 701         if(mode == BenchmarkParser) {
 702                 return 0;
 703         }
 704
 705         if(mode == PrintAst) {
 706                 type_set_output(out);
 707                 ast_set_output(out);
 708                 print_ast(unit);
 709                 return 0;
 710         }
 711         if(mode == PrintFluffy) {
 712                 type_set_output(out);
 713                 ast_set_output(out);
 714                 write_fluffy_decls(out, unit);
 715         }
 716
 717         translation_unit_to_firm(unit);
 718
 719         if(mode == ParseOnly) {
 720                 return 0;
 721         }
 722
 723         FILE *asm_out;
 724         char  asm_tempfile[1024];
 725         if(mode == CompileDump) {
 726                 asm_out = NULL;
 727                 firm_be_opt.selection = BE_NONE;
 728         } else if(mode == Compile) {
 729                 asm_out = out;
 730         } else {
 731                 asm_out
 732                         = make_temp_file(asm_tempfile, sizeof(asm_tempfile), "cc", ".s");
 733         }
 734         gen_firm_finish(asm_out, input, /*c_mode=*/1, /*firm_const_exists=*/0);
 735
 736         if(mode == CompileDump) {
 737                 /* find irg */
 738                 ident    *id     = new_id_from_str(dumpfunction);
 739                 ir_graph *irg    = NULL;
 740                 int       n_irgs = get_irp_n_irgs();
 741                 for(int i = 0; i < n_irgs; ++i) {
 742                         ir_graph *tirg   = get_irp_irg(i);
 743                         ident    *irg_id = get_entity_ident(get_irg_entity(tirg));
 744                         if(irg_id == id) {
 745                                 irg = tirg;
 746                                 break;
 747                         }
 748                 }
 749
 750                 if(irg == NULL) {
 751                         fprintf(stderr, "No graph for function '%s' found\n", dumpfunction);
 752                         return 1;
 753                 }
 754
 755                 dump_ir_block_graph_file(irg, out);
 756                 fclose(out);
 757                 return 0;
 758         }
 759
 760         fclose(asm_out);
 761
 762         /* assemble assembler and create object file */
 763         char obj_tfile[1024];
 764         if(mode == CompileAssemble || mode == CompileAssembleLink) {
 765                 const char *obj_outfile;
 766                 if(mode == CompileAssemble) {
 767                         fclose(out);
 768                         obj_outfile = outname;
 769                 } else {
 770                         FILE *tempf
 771                                 = make_temp_file(obj_tfile, sizeof(obj_tfile), "cc", ".o");
 772                         fclose(tempf);
 773                         obj_outfile = obj_tfile;
 774                 }
 775
 776                 assemble(obj_outfile, asm_tempfile);
 777         }
 778
 779         /* link object file */
 780         if(mode == CompileAssembleLink) {
 781                 do_link(outname, obj_tfile);
 782         }
 783
 784         obstack_free(&cppflags_obst, NULL);
 785         obstack_free(&ldflags_obst, NULL);
 786
 787         exit_ast2firm();
 788         exit_parser();
 789         exit_ast();
 790         exit_lexer();
 791         exit_typehash();
 792         exit_types();
 793         exit_tokens();
 794         exit_symbol_table();
 795         return 0;
 796 }