nsz Git - cparser/blob - main.c

   1 #include <config.h>
   2
   3 #define _GNU_SOURCE
   4
   5 #include <stdio.h>
   6 #include <stdlib.h>
   7 #include <stdbool.h>
   8 #include <errno.h>
   9 #include <string.h>
  10 #include <assert.h>
  11
  12 #ifdef _WIN32
  13
  14 #include <fcntl.h>
  15 #include <io.h>
  16
  17 /* no eXecute on Win32 */
  18 #define X_OK 0
  19 #define W_OK 2
  20 #define R_OK 4
  21
  22 #define O_RDWR          _O_RDWR
  23 #define O_CREAT         _O_CREAT
  24 #define O_EXCL          _O_EXCL
  25 #define O_BINARY        _O_BINARY
  26
  27 /* remap some names, we are not in the POSIX world */
  28 #define access(fname, mode)      _access(fname, mode)
  29 #define mktemp(tmpl)             _mktemp(tmpl)
  30 #define open(fname, oflag, mode) _open(fname, oflag, mode)
  31 #define fdopen(fd, mode)         _fdopen(fd, mode)
  32 #define popen(cmd, mode)         _popen(cmd, mode)
  33 #define pclose(file)             _pclose(file)
  34
  35 #else
  36 #include <unistd.h>
  37 #define HAVE_MKSTEMP
  38 #endif
  39
  40 #ifndef WITH_LIBCORE
  41 #define WITH_LIBCORE
  42 #endif
  43
  44 #include <libfirm/firm.h>
  45 #include <libfirm/be.h>
  46
  47 #include "lexer.h"
  48 #include "token_t.h"
  49 #include "types.h"
  50 #include "type_hash.h"
  51 #include "parser.h"
  52 #include "ast2firm.h"
  53 #include "diagnostic.h"
  54 #include "lang_features.h"
  55 #include "driver/firm_opt.h"
  56 #include "driver/firm_cmdline.h"
  57 #include "adt/error.h"
  58 #include "write_fluffy.h"
  59 #include "revision.h"
  60 #include "warning.h"
  61
  62 #ifndef PREPROCESSOR
  63 #define PREPROCESSOR "cpp -std=c99 -U__WCHAR_TYPE__ -D__WCHAR_TYPE__=int"
  64 #endif
  65
  66 #ifndef LINKER
  67 #define LINKER    "gcc -m32"
  68 #endif
  69
  70 #ifndef ASSEMBLER
  71 #define ASSEMBLER "as --32"
  72 #endif
  73
  74 /** The current c mode/dialect. */
  75 unsigned int c_mode = _C89|_C99|_GNUC;
  76
  77 /** The 'machine size', 16, 32 or 64 bit, 32bit is the default. */
  78 unsigned int machine_size = 32;
  79
  80 /** true if the char type is signed. */
  81 bool char_is_signed = true;
  82
  83 /** true for strict language checking. */
  84 bool strict_mode = false;
  85
  86 /* to switch on printing of implicit casts */
  87 extern bool print_implicit_casts;
  88
  89 /* to switch on printing of  srenthesis to indicate operator precedence */
  90 extern bool print_parenthesis;
  91
  92 static int            verbose;
  93 static struct obstack cppflags_obst, ldflags_obst;
  94
  95 #if defined(_DEBUG) || defined(FIRM_DEBUG)
  96 /**
  97  * Debug printf implementation.
  98  *
  99  * @param fmt  printf style format parameter
 100  */
 101 void dbg_printf(const char *fmt, ...)
 102 {
 103         va_list list;
 104
 105         if (firm_dump.debug_print) {
 106                 va_start(list, fmt);
 107                 vprintf(fmt, list);
 108                 va_end(list);
 109         }  /* if */
 110 }
 111 #endif /* defined(_DEBUG) || defined(FIRM_DEBUG) */
 112
 113 static void initialize_firm(void)
 114 {
 115         firm_early_init();
 116
 117         dump_consts_local(1);
 118         dump_keepalive_edges(1);
 119 }
 120
 121 static void get_output_name(char *buf, size_t buflen, const char *inputname,
 122                             const char *newext)
 123 {
 124         size_t last_dot = 0xffffffff;
 125         size_t i = 0;
 126
 127         if(inputname == NULL) {
 128                 snprintf(buf, buflen, "a%s", newext);
 129                 return;
 130         }
 131
 132         for(const char *c = inputname; *c != 0; ++c) {
 133                 if(*c == '.')
 134                         last_dot = i;
 135                 ++i;
 136         }
 137         if(last_dot == 0xffffffff)
 138                 last_dot = i;
 139
 140         if(last_dot >= buflen)
 141                 panic("filename too long");
 142         memcpy(buf, inputname, last_dot);
 143
 144         size_t extlen = strlen(newext) + 1;
 145         if(extlen + last_dot >= buflen)
 146                 panic("filename too long");
 147         memcpy(buf+last_dot, newext, extlen);
 148 }
 149
 150 static translation_unit_t *do_parsing(FILE *const in, const char *const input)
 151 {
 152         lexer_open_stream(in, input);
 153         translation_unit_t *unit = parse();
 154         return unit;
 155 }
 156
 157 static void lextest(FILE *in, const char *fname)
 158 {
 159         lexer_open_stream(in, fname);
 160
 161         do {
 162                 lexer_next_preprocessing_token();
 163                 print_token(stdout, &lexer_token);
 164                 puts("");
 165         } while(lexer_token.type != T_EOF);
 166 }
 167
 168 static FILE* preprocess(FILE* in, const char *fname)
 169 {
 170         char buf[4096];
 171         obstack_1grow(&cppflags_obst, '\0');
 172         const char *flags = obstack_finish(&cppflags_obst);
 173
 174         if(in != stdin) {
 175                 snprintf(buf, sizeof(buf), PREPROCESSOR " %s %s", flags, fname);
 176         } else {
 177                 /* read from stdin */
 178                 snprintf(buf, sizeof(buf), PREPROCESSOR " %s -", flags);
 179         }
 180
 181         if(verbose) {
 182                 puts(buf);
 183         }
 184         FILE* f = popen(buf, "r");
 185         if (f == NULL) {
 186                 fprintf(stderr, "invoking preprocessor failed\n");
 187                 exit(1);
 188         }
 189         return f;
 190 }
 191
 192 static void do_link(const char *out, const char *in)
 193 {
 194         char buf[4096];
 195         obstack_1grow(&ldflags_obst, '\0');
 196         const char *flags = obstack_finish(&ldflags_obst);
 197
 198         snprintf(buf, sizeof(buf), LINKER " %s -o %s %s", flags, out, in);
 199         if(verbose) {
 200                 puts(buf);
 201         }
 202         int err = system(buf);
 203         if(err != 0) {
 204                 fprintf(stderr, "linker reported an error\n");
 205                 exit(1);
 206         }
 207 }
 208
 209 static void assemble(const char *out, const char *in)
 210 {
 211         char buf[4096];
 212
 213         snprintf(buf, sizeof(buf), "%s %s -o %s", ASSEMBLER, in, out);
 214         if(verbose) {
 215                 puts(buf);
 216         }
 217
 218         int err = system(buf);
 219         if(err != 0) {
 220                 fprintf(stderr, "assembler reported an error\n");
 221                 exit(1);
 222         }
 223 }
 224
 225 static const char *try_dir(const char *dir)
 226 {
 227         if(dir == NULL)
 228                 return dir;
 229         if(access(dir, R_OK | W_OK | X_OK) == 0)
 230                 return dir;
 231         return NULL;
 232 }
 233
 234 static const char *get_tempdir(void)
 235 {
 236         static const char *tmpdir = NULL;
 237
 238         if(tmpdir != NULL)
 239                 return tmpdir;
 240
 241         if(tmpdir == NULL)
 242                 tmpdir = try_dir(getenv("TMPDIR"));
 243         if(tmpdir == NULL)
 244                 tmpdir = try_dir(getenv("TMP"));
 245         if(tmpdir == NULL)
 246                 tmpdir = try_dir(getenv("TEMP"));
 247
 248 #ifdef P_tmpdir
 249         if(tmpdir == NULL)
 250                 tmpdir = try_dir(P_tmpdir);
 251 #endif
 252
 253         if(tmpdir == NULL)
 254                 tmpdir = try_dir("/var/tmp");
 255         if(tmpdir == NULL)
 256                 tmpdir = try_dir("/usr/tmp");
 257         if(tmpdir == NULL)
 258                 tmpdir = try_dir("/tmp");
 259
 260         if(tmpdir == NULL)
 261                 tmpdir = ".";
 262
 263         return tmpdir;
 264 }
 265
 266 #ifndef HAVE_MKSTEMP
 267 /* cheap and nasty mkstemp replacement */
 268 static int mkstemp(char *templ)
 269 {
 270         mktemp(templ);
 271         return open(templ, O_RDWR|O_CREAT|O_EXCL|O_BINARY, 0600);
 272 }
 273 #endif
 274
 275 /**
 276  * an own version of tmpnam, which: writes in a buffer, appends a user specified
 277  * suffix, emits no warnings during linking (like glibc/gnu ld do for tmpnam)...
 278  */
 279 static FILE *make_temp_file(char *buffer, size_t buflen,
 280                             const char *prefix, const char *suffix)
 281 {
 282         const char *tempdir = get_tempdir();
 283
 284         /* oh well... mkstemp doesn't accept a suffix after XXXXXX... */
 285         (void) suffix;
 286         suffix = "";
 287
 288         snprintf(buffer, buflen, "%s/%sXXXXXX%s", tempdir, prefix, suffix);
 289
 290         int fd = mkstemp(buffer);
 291         if(fd == -1) {
 292                 fprintf(stderr, "couldn't create temporary file: %s\n",
 293                         strerror(errno));
 294                 exit(1);
 295         }
 296         FILE *out = fdopen(fd, "w");
 297         if(out == NULL) {
 298                 fprintf(stderr, "couldn't create temporary file FILE*\n");
 299                 exit(1);
 300         }
 301
 302         return out;
 303 }
 304
 305 /**
 306  * Do the necessary lowering for compound parameters.
 307  */
 308 void lower_compound_params(void)
 309 {
 310         lower_params_t params;
 311
 312         params.def_ptr_alignment    = 4;
 313         params.flags                = LF_COMPOUND_RETURN | LF_RETURN_HIDDEN;
 314         params.hidden_params        = ADD_HIDDEN_ALWAYS_IN_FRONT;
 315         params.find_pointer_type    = NULL;
 316         params.ret_compound_in_regs = NULL;
 317         lower_calls_with_compounds(&params);
 318 }
 319
 320 typedef enum compile_mode_t {
 321         BenchmarkParser,
 322         ParseOnly,
 323         Compile,
 324         CompileDump,
 325         CompileAssemble,
 326         CompileAssembleLink,
 327         LexTest,
 328         PrintAst,
 329         PrintFluffy
 330 } compile_mode_t;
 331
 332 static void usage(const char *argv0)
 333 {
 334         fprintf(stderr, "Usage %s input [-o output] [-c]\n", argv0);
 335 }
 336
 337 int main(int argc, char **argv)
 338 {
 339         initialize_firm();
 340
 341         const char     *input        = NULL;
 342         const char     *outname      = NULL;
 343         const char     *dumpfunction = NULL;
 344         compile_mode_t  mode         = CompileAssembleLink;
 345         int             opt_level    = 1;
 346
 347         obstack_init(&cppflags_obst);
 348         obstack_init(&ldflags_obst);
 349
 350 #define GET_ARG_AFTER(def, args)                                             \
 351         def = &arg[sizeof(args)-1];                                              \
 352         if(def[0] == '\0') {                                                     \
 353                 ++i;                                                                 \
 354                 if(i >= argc) {                                                      \
 355                         fprintf(stderr, "error: expected argument after '" args "'\n");  \
 356                         argument_errors = true;                                          \
 357                         break;                                                           \
 358                 }                                                                    \
 359                 def = argv[i];                                                       \
 360                 if(def[0] == '-' && def[1] != '\0') {                                \
 361                         fprintf(stderr, "error: expected argument after '" args "'\n");  \
 362                         argument_errors = true;                                          \
 363                         continue;                                                        \
 364                 }                                                                    \
 365         }
 366
 367 #define SINGLE_OPTION(ch) (option[0] == (ch) && option[1] == '\0')
 368
 369         /* early options parsing (find out optimisation level) */
 370         for(int i = 1; i < argc; ++i) {
 371                 const char *arg = argv[i];
 372                 if(arg[0] != '-')
 373                         continue;
 374
 375                 const char *option = &arg[1];
 376                 if(option[0] == 'O') {
 377                         sscanf(&option[1], "%d", &opt_level);
 378                 }
 379         }
 380
 381         /* apply optimisation level */
 382         switch(opt_level) {
 383         case 0:
 384                 firm_option("no-opt");
 385                 break;
 386         case 1:
 387                 firm_option("no-inline");
 388                 break;
 389         default:
 390         case 4:
 391                 firm_option("strict-aliasing");
 392                 /* fallthrough */
 393         case 3:
 394                 firm_option("cond-eval");
 395                 firm_option("if-conv");
 396                 /* fallthrough */
 397         case 2:
 398                 firm_option("inline");
 399                 firm_option("no-strength-red");
 400                 firm_option("deconv");
 401                 firm_be_option("omitfp");
 402                 break;
 403         }
 404
 405         /* parse rest of options */
 406         bool help_displayed  = false;
 407         bool argument_errors = false;
 408         for(int i = 1; i < argc; ++i) {
 409                 const char *arg = argv[i];
 410                 if(arg[0] == '-') {
 411                         /* an option */
 412                         const char *option = &arg[1];
 413                         if(option[0] == 'o') {
 414                                 GET_ARG_AFTER(outname, "-o");
 415                         } else if(option[0] == 'g') {
 416                                 firm_be_option("stabs=yes");
 417                         } else if(SINGLE_OPTION('c')) {
 418                                 mode = CompileAssemble;
 419                         } else if(SINGLE_OPTION('S')) {
 420                                 mode = Compile;
 421                         } else if(option[0] == 'O') {
 422                                 continue;
 423                         } else if(option[0] == 'I') {
 424                                 const char *opt;
 425                                 GET_ARG_AFTER(opt, "-I");
 426                                 obstack_printf(&cppflags_obst, " -I%s", opt);
 427                         } else if(option[0] == 'D') {
 428                                 const char *opt;
 429                                 GET_ARG_AFTER(opt, "-D");
 430                                 obstack_printf(&cppflags_obst, " -D%s", opt);
 431                         } else if(option[0] == 'U') {
 432                                 const char *opt;
 433                                 GET_ARG_AFTER(opt, "-U");
 434                                 obstack_printf(&cppflags_obst, " -U%s", opt);
 435                         } else if(option[0] == 'l') {
 436                                 const char *opt;
 437                                 GET_ARG_AFTER(opt, "-l");
 438                                 obstack_printf(&ldflags_obst, " -l%s", opt);
 439                         } else if(option[0] == 'L') {
 440                                 const char *opt;
 441                                 GET_ARG_AFTER(opt, "-L");
 442                                 obstack_printf(&ldflags_obst, " -L%s", opt);
 443                         } else if(SINGLE_OPTION('v')) {
 444                                 verbose = 1;
 445                         } else if(SINGLE_OPTION('w')) {
 446                                 inhibit_all_warnings = true;
 447                         } else if(option[0] == 'f') {
 448                                 const char *opt;
 449                                 GET_ARG_AFTER(opt, "-f");
 450
 451                                 if(strcmp(opt, "syntax-only") == 0) {
 452                                         mode = ParseOnly;
 453                                 } else if(strcmp(opt, "omit-frame-pointer") == 0) {
 454                                         firm_be_option("omitfp");
 455                                 } else if(strcmp(opt, "no-omit-frame-pointer") == 0) {
 456                                         firm_be_option("omitfp=no");
 457                                 } else {
 458                                         int res = firm_option(opt);
 459                                         if (res == 0) {
 460                                                 fprintf(stderr, "error: unknown Firm option '-f %s'\n",
 461                                                         opt);
 462                                                 argument_errors = true;
 463                                                 continue;
 464                                         } else if (res == -1) {
 465                                                 help_displayed = true;
 466                                         }
 467                                 }
 468                         } else if(option[0] == 'b') {
 469                                 const char *opt;
 470                                 GET_ARG_AFTER(opt, "-b");
 471                                 int res = firm_be_option(opt);
 472                                 if (res == 0) {
 473                                         fprintf(stderr, "error: unknown Firm backend option '-b %s'\n",
 474                                                 opt);
 475                                         argument_errors = true;
 476                                 } else if (res == -1) {
 477                                         help_displayed = true;
 478                                 }
 479                         } else if(option[0] == 'W') {
 480                                 set_warning_opt(&option[1]);
 481                         } else if(option[0] == 'm') {
 482                                 const char *opt;
 483                                 GET_ARG_AFTER(opt, "-m");
 484                                 char *endptr;
 485                                 long int value = strtol(opt, &endptr, 10);
 486                                 if (*endptr != '\0') {
 487                                         fprintf(stderr, "error: wrong option '-m %s'\n",  opt);
 488                                         argument_errors = true;
 489                                 }
 490                                 if (value != 16 && value != 32 && value != 64) {
 491                                         fprintf(stderr, "error: option -m supports only 16, 32 or 64\n");
 492                                         argument_errors = true;
 493                                 } else {
 494                                         machine_size = (unsigned int)value;
 495                                 }
 496                         } else if (option[0] == '\0') {
 497                                 if(input != NULL) {
 498                                         fprintf(stderr, "error: multiple input files specified\n");
 499                                         argument_errors = true;
 500                                 } else {
 501                                         input = arg;
 502                                 }
 503                         } else if(strcmp(option, "pedantic") == 0) {
 504                                 fprintf(stderr, "warning: ignoring gcc option '%s'\n", arg);
 505                         } else if(strncmp(option, "std=", 4) == 0) {
 506                                 fprintf(stderr, "warning: ignoring gcc option '%s'\n", arg);
 507                         } else if (option[0] == '-') {
 508                                 /* double dash option */
 509                                 ++option;
 510                                 if(strcmp(option, "gcc") == 0) {
 511                                         c_mode |= _GNUC;
 512                                 } else if(strcmp(option, "no-gcc") == 0) {
 513                                         c_mode &= ~_GNUC;
 514                                 } else if(strcmp(option, "ms") == 0) {
 515                                         c_mode |= _MS;
 516                                 } else if(strcmp(option, "no-ms") == 0) {
 517                                         c_mode &= ~_MS;
 518                                 } else if(strcmp(option, "signed-chars") == 0) {
 519                                         char_is_signed = true;
 520                                 } else if(strcmp(option, "unsigned-chars") == 0) {
 521                                         char_is_signed = false;
 522                                 } else if(strcmp(option, "strict") == 0) {
 523                                         strict_mode = true;
 524                                 } else if(strcmp(option, "lextest") == 0) {
 525                                         mode = LexTest;
 526                                 } else if(strcmp(option, "benchmark") == 0) {
 527                                         mode = BenchmarkParser;
 528                                 } else if(strcmp(option, "print-ast") == 0) {
 529                                         mode = PrintAst;
 530                                 } else if(strcmp(option, "print-implicit-cast") == 0) {
 531                                         print_implicit_casts = true;
 532                                 } else if(strcmp(option, "print-parenthesis") == 0) {
 533                                         print_parenthesis = true;
 534                                 } else if(strcmp(option, "print-fluffy") == 0) {
 535                                         mode = PrintFluffy;
 536                                 } else if(strcmp(option, "version") == 0) {
 537                                         firm_version_t ver;
 538                                         firm_get_version(&ver);
 539                                         printf("cparser (%d.%d %s) using libFirm (%u.%u", 0, 1, cparser_REVISION, ver.major, ver.minor);
 540                                         if(ver.revision[0] != 0) {
 541                                                 putchar(' ');
 542                                                 fputs(ver.revision, stdout);
 543                                         }
 544                                         if(ver.build[0] != 0) {
 545                                                 putchar(' ');
 546                                                 fputs(ver.build, stdout);
 547                                         }
 548                                         puts(")\n");
 549                                         exit(EXIT_SUCCESS);
 550                                 } else if(strcmp(option, "dump-function") == 0) {
 551                                         ++i;
 552                                         if(i >= argc) {
 553                                                 fprintf(stderr, "error: "
 554                                                         "expected argument after '--dump-function'\n");
 555                                                 argument_errors = true;
 556                                                 break;
 557                                         }
 558                                         dumpfunction = argv[i];
 559                                         mode         = CompileDump;
 560                                 } else {
 561                                         fprintf(stderr, "error: unknown argument '%s'\n", arg);
 562                                         argument_errors = true;
 563                                 }
 564                         } else {
 565                                 fprintf(stderr, "error: unknown argument '%s'\n", arg);
 566                                 argument_errors = true;
 567                         }
 568                 } else {
 569                         if(input != NULL) {
 570                                 fprintf(stderr, "error: multiple input files specified\n");
 571                                 argument_errors = true;
 572                         } else {
 573                                 input = arg;
 574                         }
 575                 }
 576         }
 577
 578         /* we do the lowering in ast2firm */
 579         firm_opt.lower_bitfields = FALSE;
 580
 581         if(help_displayed) {
 582                 return !argument_errors;
 583         }
 584         if(argument_errors) {
 585                 usage(argv[0]);
 586                 return 1;
 587         }
 588
 589         gen_firm_init();
 590         init_symbol_table();
 591         init_tokens();
 592         init_types();
 593         init_typehash();
 594         init_basic_types();
 595         init_lexer();
 596         init_ast();
 597         init_parser();
 598         init_ast2firm();
 599
 600         FILE *out = NULL;
 601         char  outnamebuf[4096];
 602         if(outname == NULL) {
 603                 switch(mode) {
 604                 case BenchmarkParser:
 605                 case PrintAst:
 606                 case PrintFluffy:
 607                 case LexTest:
 608                         if(outname == NULL)
 609                                 outname = "-";
 610                         break;
 611                 case ParseOnly:
 612                         break;
 613                 case Compile:
 614                         get_output_name(outnamebuf, sizeof(outnamebuf), input, ".s");
 615                         outname = outnamebuf;
 616                         break;
 617                 case CompileAssemble:
 618                         get_output_name(outnamebuf, sizeof(outnamebuf), input, ".o");
 619                         outname = outnamebuf;
 620                         break;
 621                 case CompileDump:
 622                         get_output_name(outnamebuf, sizeof(outnamebuf), dumpfunction,
 623                                         ".vcg");
 624                         outname = outnamebuf;
 625                         break;
 626                 case CompileAssembleLink:
 627                         outname = "a.out";
 628                         break;
 629                 }
 630         }
 631
 632         if(outname != NULL) {
 633                 if(strcmp(outname, "-") == 0) {
 634                         out = stdout;
 635                 } else {
 636                         out = fopen(outname, "w");
 637                         if(out == NULL) {
 638                                 fprintf(stderr, "Couldn't open '%s' for writing: %s\n", outname,
 639                                         strerror(errno));
 640                                 return 1;
 641                         }
 642                 }
 643         }
 644
 645         FILE *in;
 646         if(input == NULL) {
 647                 fprintf(stderr, "%s: no input files\n", argv[0]);
 648                 return 1;
 649         } else if(strcmp(input, "-") == 0) {
 650                 in    = stdin;
 651                 input = "<stdin>";
 652         } else {
 653                 in = fopen(input, "r");
 654                 if(in == NULL) {
 655                         fprintf(stderr, "Couldn't open '%s': %s\n", input, strerror(errno));
 656                         return 1;
 657                 }
 658         }
 659
 660         if(mode == LexTest) {
 661                 lextest(in, input);
 662                 fclose(in);
 663                 return 0;
 664         }
 665
 666         FILE *preprocessed_in = preprocess(in, input);
 667         translation_unit_t *const unit = do_parsing(preprocessed_in, input);
 668         int result = pclose(preprocessed_in);
 669         if(result != 0) {
 670                 return result;
 671         }
 672         if(unit == NULL) {
 673                 /* parsing failed because of errors */
 674                 fprintf(stderr, "%u error(s), %u warning(s)\n", error_count, warning_count);
 675                 return EXIT_FAILURE;
 676         }
 677         if (warning_count > 0) {
 678                 fprintf(stderr, "%u warning(s)\n", warning_count);
 679         }
 680
 681         if(mode == BenchmarkParser) {
 682                 return 0;
 683         }
 684
 685         if(mode == PrintAst) {
 686                 type_set_output(out);
 687                 ast_set_output(out);
 688                 print_ast(unit);
 689                 return 0;
 690         }
 691         if(mode == PrintFluffy) {
 692                 type_set_output(out);
 693                 ast_set_output(out);
 694                 write_fluffy_decls(out, unit);
 695         }
 696
 697         translation_unit_to_firm(unit);
 698
 699         if(mode == ParseOnly) {
 700                 return 0;
 701         }
 702
 703         FILE *asm_out;
 704         char  asm_tempfile[1024];
 705         if(mode == CompileDump) {
 706                 asm_out = NULL;
 707                 firm_be_opt.selection = BE_NONE;
 708         } else if(mode == Compile) {
 709                 asm_out = out;
 710         } else {
 711                 asm_out
 712                         = make_temp_file(asm_tempfile, sizeof(asm_tempfile), "cc", ".s");
 713         }
 714         gen_firm_finish(asm_out, input, /*c_mode=*/1, /*firm_const_exists=*/0);
 715
 716         if(mode == CompileDump) {
 717                 /* find irg */
 718                 ident    *id     = new_id_from_str(dumpfunction);
 719                 ir_graph *irg    = NULL;
 720                 int       n_irgs = get_irp_n_irgs();
 721                 for(int i = 0; i < n_irgs; ++i) {
 722                         ir_graph *tirg   = get_irp_irg(i);
 723                         ident    *irg_id = get_entity_ident(get_irg_entity(tirg));
 724                         if(irg_id == id) {
 725                                 irg = tirg;
 726                                 break;
 727                         }
 728                 }
 729
 730                 if(irg == NULL) {
 731                         fprintf(stderr, "No graph for function '%s' found\n", dumpfunction);
 732                         return 1;
 733                 }
 734
 735                 dump_ir_block_graph_file(irg, out);
 736                 fclose(out);
 737                 return 0;
 738         }
 739
 740         fclose(asm_out);
 741
 742         /* assemble assembler and create object file */
 743         char obj_tfile[1024];
 744         if(mode == CompileAssemble || mode == CompileAssembleLink) {
 745                 const char *obj_outfile;
 746                 if(mode == CompileAssemble) {
 747                         fclose(out);
 748                         obj_outfile = outname;
 749                 } else {
 750                         FILE *tempf
 751                                 = make_temp_file(obj_tfile, sizeof(obj_tfile), "cc", ".o");
 752                         fclose(tempf);
 753                         obj_outfile = obj_tfile;
 754                 }
 755
 756                 assemble(obj_outfile, asm_tempfile);
 757         }
 758
 759         /* link object file */
 760         if(mode == CompileAssembleLink) {
 761                 do_link(outname, obj_tfile);
 762         }
 763
 764         obstack_free(&cppflags_obst, NULL);
 765         obstack_free(&ldflags_obst, NULL);
 766
 767         exit_ast2firm();
 768         exit_parser();
 769         exit_ast();
 770         exit_lexer();
 771         exit_typehash();
 772         exit_types();
 773         exit_tokens();
 774         exit_symbol_table();
 775         return 0;
 776 }