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
  54 #else
  55 #include <unistd.h>
  56 #define HAVE_MKSTEMP
  57 #endif
  58
  59 #ifndef WITH_LIBCORE
  60 #define WITH_LIBCORE
  61 #endif
  62
  63 #include <libfirm/firm.h>
  64 #include <libfirm/be.h>
  65
  66 #include "lexer.h"
  67 #include "token_t.h"
  68 #include "types.h"
  69 #include "type_hash.h"
  70 #include "parser.h"
  71 #include "type_t.h"
  72 #include "ast2firm.h"
  73 #include "diagnostic.h"
  74 #include "lang_features.h"
  75 #include "driver/firm_opt.h"
  76 #include "driver/firm_cmdline.h"
  77 #include "adt/error.h"
  78 #include "write_fluffy.h"
  79 #include "write_caml.h"
  80 #include "revision.h"
  81 #include "warning.h"
  82
  83 #ifndef PREPROCESSOR
  84 #ifdef __APPLE__
  85 #define PREPROCESSOR "gcc -E -std=c99 -m32 -U__STRICT_ANSI__"
  86 #else
  87 #define PREPROCESSOR "cpp -std=c99 -m32 -U__STRICT_ANSI__"
  88 #endif
  89 #endif
  90
  91 #ifndef LINKER
  92 #define LINKER    "gcc -m32"
  93 #endif
  94
  95 #ifndef ASSEMBLER
  96 #ifdef __APPLE__
  97 #define ASSEMBLER "gcc -c -xassembler"
  98 #else
  99 #define ASSEMBLER "as --32"
 100 #endif
 101 #endif
 102
 103 /** The current c mode/dialect. */
 104 lang_features_t c_mode = _C89 | _ANSI | _C99 | _GNUC;
 105
 106 /** The 'machine size', 16, 32 or 64 bit, 32bit is the default. */
 107 unsigned int machine_size = 32;
 108
 109 /** true if the char type is signed. */
 110 bool char_is_signed = true;
 111
 112 /** true for strict language checking. */
 113 bool strict_mode = false;
 114
 115 /** use builtins for some libc functions */
 116 bool use_builtins = false;
 117
 118 /** we have extern function with const attribute. */
 119 bool have_const_functions = false;
 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 #if defined(_DEBUG) || defined(FIRM_DEBUG)
 153 /**
 154  * Debug printf implementation.
 155  *
 156  * @param fmt  printf style format parameter
 157  */
 158 void dbg_printf(const char *fmt, ...)
 159 {
 160         va_list list;
 161
 162         if (firm_dump.debug_print) {
 163                 va_start(list, fmt);
 164                 vprintf(fmt, list);
 165                 va_end(list);
 166         }  /* if */
 167 }
 168 #endif /* defined(_DEBUG) || defined(FIRM_DEBUG) */
 169
 170 static void initialize_firm(void)
 171 {
 172         firm_early_init();
 173
 174         dump_consts_local(1);
 175         dump_keepalive_edges(1);
 176 }
 177
 178 static void get_output_name(char *buf, size_t buflen, const char *inputname,
 179                             const char *newext)
 180 {
 181         size_t last_dot = 0xffffffff;
 182         size_t i = 0;
 183
 184         if(inputname == NULL) {
 185                 snprintf(buf, buflen, "a%s", newext);
 186                 return;
 187         }
 188
 189         for(const char *c = inputname; *c != 0; ++c) {
 190                 if(*c == '.')
 191                         last_dot = i;
 192                 ++i;
 193         }
 194         if(last_dot == 0xffffffff)
 195                 last_dot = i;
 196
 197         if(last_dot >= buflen)
 198                 panic("filename too long");
 199         memcpy(buf, inputname, last_dot);
 200
 201         size_t extlen = strlen(newext) + 1;
 202         if(extlen + last_dot >= buflen)
 203                 panic("filename too long");
 204         memcpy(buf+last_dot, newext, extlen);
 205 }
 206
 207 #include "builtins.h"
 208
 209 static translation_unit_t *do_parsing(FILE *const in, const char *const input_name)
 210 {
 211         start_parsing();
 212
 213         if (use_builtins) {
 214                 lexer_open_buffer(builtins, sizeof(builtins)-1, "<builtin>");
 215                 parse();
 216         }
 217
 218         lexer_open_stream(in, input_name);
 219         parse();
 220
 221         translation_unit_t *unit = finish_parsing();
 222         return unit;
 223 }
 224
 225 static void lextest(FILE *in, const char *fname)
 226 {
 227         lexer_open_stream(in, fname);
 228
 229         do {
 230                 lexer_next_preprocessing_token();
 231                 print_token(stdout, &lexer_token);
 232                 puts("");
 233         } while(lexer_token.type != T_EOF);
 234 }
 235
 236 static void add_flag(struct obstack *obst, const char *format, ...)
 237 {
 238         va_list ap;
 239         va_start(ap, format);
 240
 241         char buf[4096];
 242         vsnprintf(buf, sizeof(buf), format, ap);
 243
 244         /* escape stuff... */
 245         obstack_1grow(obst, ' ');
 246         for (char *c = buf; *c != '\0'; ++c) {
 247                 switch(*c) {
 248                 case '"':
 249                 case '\'':
 250                 case '`':
 251                 case ' ':
 252                 case '\t':
 253                 case '\n':
 254                 case '\r':
 255                 case '\\':
 256                 case '$':
 257                 case '(':
 258                 case ')':
 259                         obstack_1grow(obst, '\\');
 260                         /* fallthrough */
 261                 default:
 262                         obstack_1grow(obst, *c);
 263                         break;
 264                 }
 265         }
 266
 267         va_end(ap);
 268 }
 269
 270 static const char *type_to_string(type_t *type)
 271 {
 272         assert(type->kind == TYPE_ATOMIC);
 273         return get_atomic_kind_name(type->atomic.akind);
 274 }
 275
 276 static FILE *preprocess(const char *fname)
 277 {
 278         obstack_1grow(&cppflags_obst, '\0');
 279         const char *flags = obstack_finish(&cppflags_obst);
 280
 281         obstack_printf(&cppflags_obst, "%s", PREPROCESSOR);
 282
 283         /* setup default defines */
 284         add_flag(&cppflags_obst, "-U__WCHAR_TYPE__");
 285         add_flag(&cppflags_obst, "-D__WCHAR_TYPE__=%s",
 286                  type_to_string(type_wchar_t));
 287         add_flag(&cppflags_obst, "-U__SIZE_TYPE__");
 288         add_flag(&cppflags_obst, "-D__SIZE_TYPE__=%s", type_to_string(type_size_t));
 289
 290         /* handle dependency generation */
 291         if (dep_target[0] != '\0') {
 292                 add_flag(&cppflags_obst, "-MF");
 293                 add_flag(&cppflags_obst, "%s", dep_target);
 294                 if (outname != NULL) {
 295                                 add_flag(&cppflags_obst, "-MQ");
 296                                 add_flag(&cppflags_obst, "%s", outname);
 297                 }
 298         }
 299         if (flags[0] != '\0') {
 300                 obstack_printf(&cppflags_obst, " %s", flags);
 301         }
 302         add_flag(&cppflags_obst, "%s", fname);
 303
 304         obstack_1grow(&cppflags_obst, '\0');
 305         const char *buf = obstack_finish(&cppflags_obst);
 306         if(verbose) {
 307                 puts(buf);
 308         }
 309
 310         FILE *f = popen(buf, "r");
 311         if(f == NULL) {
 312                 fprintf(stderr, "invoking preprocessor failed\n");
 313                 exit(1);
 314         }
 315
 316         return f;
 317 }
 318
 319 static void assemble(const char *out, const char *in)
 320 {
 321         char buf[4096];
 322
 323         snprintf(buf, sizeof(buf), "%s %s -o %s", ASSEMBLER, in, out);
 324         if(verbose) {
 325                 puts(buf);
 326         }
 327
 328         int err = system(buf);
 329         if(err != 0) {
 330                 fprintf(stderr, "assembler reported an error\n");
 331                 exit(1);
 332         }
 333 }
 334
 335 static const char *try_dir(const char *dir)
 336 {
 337         if(dir == NULL)
 338                 return dir;
 339         if(access(dir, R_OK | W_OK | X_OK) == 0)
 340                 return dir;
 341         return NULL;
 342 }
 343
 344 static const char *get_tempdir(void)
 345 {
 346         static const char *tmpdir = NULL;
 347
 348         if(tmpdir != NULL)
 349                 return tmpdir;
 350
 351         if(tmpdir == NULL)
 352                 tmpdir = try_dir(getenv("TMPDIR"));
 353         if(tmpdir == NULL)
 354                 tmpdir = try_dir(getenv("TMP"));
 355         if(tmpdir == NULL)
 356                 tmpdir = try_dir(getenv("TEMP"));
 357
 358 #ifdef P_tmpdir
 359         if(tmpdir == NULL)
 360                 tmpdir = try_dir(P_tmpdir);
 361 #endif
 362
 363         if(tmpdir == NULL)
 364                 tmpdir = try_dir("/var/tmp");
 365         if(tmpdir == NULL)
 366                 tmpdir = try_dir("/usr/tmp");
 367         if(tmpdir == NULL)
 368                 tmpdir = try_dir("/tmp");
 369
 370         if(tmpdir == NULL)
 371                 tmpdir = ".";
 372
 373         return tmpdir;
 374 }
 375
 376 #ifndef HAVE_MKSTEMP
 377 /* cheap and nasty mkstemp replacement */
 378 static int mkstemp(char *templ)
 379 {
 380         mktemp(templ);
 381         return open(templ, O_RDWR|O_CREAT|O_EXCL|O_BINARY, 0600);
 382 }
 383 #endif
 384
 385 /**
 386  * an own version of tmpnam, which: writes in a buffer, emits no warnings
 387  * during linking (like glibc/gnu ld do for tmpnam)...
 388  */
 389 static FILE *make_temp_file(char *buffer, size_t buflen, const char *prefix)
 390 {
 391         const char *tempdir = get_tempdir();
 392
 393         snprintf(buffer, buflen, "%s/%sXXXXXX", tempdir, prefix);
 394
 395         int fd = mkstemp(buffer);
 396         if(fd == -1) {
 397                 fprintf(stderr, "couldn't create temporary file: %s\n",
 398                         strerror(errno));
 399                 exit(1);
 400         }
 401         FILE *out = fdopen(fd, "w");
 402         if(out == NULL) {
 403                 fprintf(stderr, "couldn't create temporary file FILE*\n");
 404                 exit(1);
 405         }
 406
 407         return out;
 408 }
 409
 410 /**
 411  * Do the necessary lowering for compound parameters.
 412  */
 413 void lower_compound_params(void)
 414 {
 415         lower_params_t params;
 416
 417         params.def_ptr_alignment    = 4;
 418         params.flags                = LF_COMPOUND_RETURN | LF_RETURN_HIDDEN;
 419         params.hidden_params        = ADD_HIDDEN_ALWAYS_IN_FRONT;
 420         params.find_pointer_type    = NULL;
 421         params.ret_compound_in_regs = NULL;
 422         lower_calls_with_compounds(&params);
 423 }
 424
 425 typedef enum compile_mode_t {
 426         BenchmarkParser,
 427         PreprocessOnly,
 428         ParseOnly,
 429         Compile,
 430         CompileDump,
 431         CompileAssemble,
 432         CompileAssembleLink,
 433         LexTest,
 434         PrintAst,
 435         PrintFluffy,
 436         PrintCaml
 437 } compile_mode_t;
 438
 439 static void usage(const char *argv0)
 440 {
 441         fprintf(stderr, "Usage %s input [-o output] [-c]\n", argv0);
 442 }
 443
 444 static void print_cparser_version(void) {
 445         firm_version_t ver;
 446         firm_get_version(&ver);
 447
 448         printf("cparser (%s) using libFirm (%u.%u",
 449                 cparser_REVISION, ver.major, ver.minor);
 450         if(ver.revision[0] != 0) {
 451                 putchar(' ');
 452                 fputs(ver.revision, stdout);
 453         }
 454         if(ver.build[0] != 0) {
 455                 putchar(' ');
 456                 fputs(ver.build, stdout);
 457         }
 458         puts(")\n");
 459 }
 460
 461 static void set_be_option(const char *arg)
 462 {
 463         int res = firm_be_option(arg);
 464         (void) res;
 465         assert(res);
 466 }
 467
 468 static void set_option(const char *arg)
 469 {
 470         int res = firm_option(arg);
 471         (void) res;
 472         assert(res);
 473 }
 474
 475 static void copy_file(FILE *dest, FILE *input)
 476 {
 477         char buf[16384];
 478
 479         while (!feof(input) && !ferror(dest)) {
 480                 size_t read = fread(buf, 1, sizeof(buf), input);
 481                 if(fwrite(buf, 1, read, dest) != read) {
 482                         perror("couldn't write output");
 483                 }
 484         }
 485 }
 486
 487 static inline bool streq(char const* a, char const* b)
 488 {
 489         return strcmp(a, b) == 0;
 490 }
 491
 492 static inline bool strstart(char const* str, char const* start)
 493 {
 494         do {
 495                 if (*start == '\0')
 496                         return true;
 497         } while (*str++ == *start++);
 498         return false;
 499 }
 500
 501 static FILE *open_file(const char *filename)
 502 {
 503         if (streq(filename, "-")) {
 504                 return stdin;
 505         }
 506
 507         FILE *in = fopen(filename, "r");
 508         if(in == NULL) {
 509                 fprintf(stderr, "Couldn't open '%s': %s\n", filename,
 510                                 strerror(errno));
 511                 exit(1);
 512         }
 513
 514         return in;
 515 }
 516
 517 static filetype_t get_filetype_from_string(const char *string)
 518 {
 519         if (streq(string, "c") || streq(string, "c-header"))
 520                 return FILETYPE_C;
 521         if (streq(string, "c++") || streq(string, "c++-header"))
 522                 return FILETYPE_CXX;
 523         if (streq(string, "assembler"))
 524                 return FILETYPE_PREPROCESSED_ASSEMBLER;
 525         if (streq(string, "assembler-with-cpp"))
 526                 return FILETYPE_ASSEMBLER;
 527         if (streq(string, "none"))
 528                 return FILETYPE_AUTODETECT;
 529
 530         return FILETYPE_UNKNOWN;
 531 }
 532
 533 static void init_os_support(void)
 534 {
 535         /* OS option must be set to the backend */
 536         switch (firm_opt.os_support) {
 537         case OS_SUPPORT_MINGW:
 538                 set_be_option("ia32-gasmode=mingw");
 539                 wchar_atomic_kind = ATOMIC_TYPE_USHORT;
 540                 break;
 541         case OS_SUPPORT_LINUX:
 542                 set_be_option("ia32-gasmode=elf");
 543                 break;
 544         case OS_SUPPORT_MACHO:
 545                 set_be_option("ia32-gasmode=macho");
 546                 set_be_option("ia32-stackalign=4");
 547                 set_be_option("pic");
 548                 break;
 549         }
 550 }
 551
 552 typedef enum lang_standard_t {
 553         STANDARD_DEFAULT, /* gnu99 (for C, GCC does gnu89) or gnu++98 (for C++) */
 554         STANDARD_ANSI,    /* c89 (for C) or c++98 (for C++) */
 555         STANDARD_C89,     /* ISO C90 (sic) */
 556         STANDARD_C90,     /* ISO C90 as modified in amendment 1 */
 557         STANDARD_C99,     /* ISO C99 */
 558         STANDARD_GNU89,   /* ISO C90 plus GNU extensions (including some C99) */
 559         STANDARD_GNU99,   /* ISO C99 plus GNU extensions */
 560         STANDARD_CXX98,   /* ISO C++ 1998 plus amendments */
 561         STANDARD_GNUXX98  /* ISO C++ 1998 plus amendments and GNU extensions */
 562 } lang_standard_t;
 563
 564 int main(int argc, char **argv)
 565 {
 566         initialize_firm();
 567
 568         const char        *dumpfunction         = NULL;
 569         compile_mode_t     mode                 = CompileAssembleLink;
 570         int                opt_level            = 1;
 571         int                result               = EXIT_SUCCESS;
 572         char               cpu_arch[16]         = "ia32";
 573         file_list_entry_t *files                = NULL;
 574         file_list_entry_t *last_file            = NULL;
 575         bool               construct_dep_target = false;
 576         struct obstack     file_obst;
 577
 578         /* hack for now... */
 579         if (strstr(argv[0], "pptest") != NULL) {
 580                 extern int pptest_main(int argc, char **argv);
 581                 return pptest_main(argc, argv);
 582         }
 583
 584         obstack_init(&cppflags_obst);
 585         obstack_init(&ldflags_obst);
 586         obstack_init(&file_obst);
 587
 588 #define GET_ARG_AFTER(def, args)                                             \
 589         def = &arg[sizeof(args)-1];                                              \
 590         if(def[0] == '\0') {                                                     \
 591                 ++i;                                                                 \
 592                 if(i >= argc) {                                                      \
 593                         fprintf(stderr, "error: expected argument after '" args "'\n");  \
 594                         argument_errors = true;                                          \
 595                         break;                                                           \
 596                 }                                                                    \
 597                 def = argv[i];                                                       \
 598                 if(def[0] == '-' && def[1] != '\0') {                                \
 599                         fprintf(stderr, "error: expected argument after '" args "'\n");  \
 600                         argument_errors = true;                                          \
 601                         continue;                                                        \
 602                 }                                                                    \
 603         }
 604
 605 #define SINGLE_OPTION(ch) (option[0] == (ch) && option[1] == '\0')
 606
 607         /* early options parsing (find out optimisation level and OS) */
 608         for (int i = 1; i < argc; ++i) {
 609                 const char *arg = argv[i];
 610                 if(arg[0] != '-')
 611                         continue;
 612
 613                 const char *option = &arg[1];
 614                 if (option[0] == 'O') {
 615                         sscanf(&option[1], "%d", &opt_level);
 616                 }
 617                 if (strcmp(arg, "-fwin32") == 0) {
 618                         firm_opt.os_support = OS_SUPPORT_MINGW;
 619                 } else if (strcmp(arg, "-fmac") == 0) {
 620                         firm_opt.os_support = OS_SUPPORT_MACHO;
 621                 } else if (strcmp(arg, "-flinux") == 0) {
 622                         firm_opt.os_support = OS_SUPPORT_LINUX;
 623                 }
 624         }
 625
 626         /* set target/os specific stuff */
 627         init_os_support();
 628
 629         /* apply optimisation level */
 630         switch(opt_level) {
 631         case 0:
 632                 set_option("no-opt");
 633                 break;
 634         case 1:
 635                 set_option("no-inline");
 636                 break;
 637         default:
 638         case 4:
 639                 set_option("strict-aliasing");
 640                 /* use_builtins = true; */
 641                 /* fallthrough */
 642         case 3:
 643                 set_option("cond-eval");
 644                 set_option("if-conv");
 645                 /* fallthrough */
 646         case 2:
 647                 set_option("inline");
 648                 set_option("deconv");
 649                 set_be_option("omitfp");
 650                 break;
 651         }
 652
 653         /* parse rest of options */
 654         lang_standard_t standard        = STANDARD_DEFAULT;
 655         lang_features_t features_on     = 0;
 656         lang_features_t features_off    = 0;
 657         filetype_t      forced_filetype = FILETYPE_AUTODETECT;
 658         bool            help_displayed  = false;
 659         bool            argument_errors = false;
 660         for(int i = 1; i < argc; ++i) {
 661                 const char *arg = argv[i];
 662                 if (arg[0] == '-' && arg[1] != '\0') {
 663                         /* an option */
 664                         const char *option = &arg[1];
 665                         if(option[0] == 'o') {
 666                                 GET_ARG_AFTER(outname, "-o");
 667                         } else if(option[0] == 'g') {
 668                                 set_be_option("debuginfo=stabs");
 669                                 set_be_option("omitfp=no");
 670                                 set_be_option("ia32-nooptcc=yes");
 671                         } else if(SINGLE_OPTION('c')) {
 672                                 mode = CompileAssemble;
 673                         } else if(SINGLE_OPTION('E')) {
 674                                 mode = PreprocessOnly;
 675                         } else if(SINGLE_OPTION('S')) {
 676                                 mode = Compile;
 677                         } else if(option[0] == 'O') {
 678                                 continue;
 679                         } else if(option[0] == 'I') {
 680                                 const char *opt;
 681                                 GET_ARG_AFTER(opt, "-I");
 682                                 add_flag(&cppflags_obst, "-I%s", opt);
 683                         } else if(option[0] == 'D') {
 684                                 const char *opt;
 685                                 GET_ARG_AFTER(opt, "-D");
 686                                 add_flag(&cppflags_obst, "-D%s", opt);
 687                         } else if(option[0] == 'U') {
 688                                 const char *opt;
 689                                 GET_ARG_AFTER(opt, "-U");
 690                                 add_flag(&cppflags_obst, "-U%s", opt);
 691                         } else if(option[0] == 'l') {
 692                                 const char *opt;
 693                                 GET_ARG_AFTER(opt, "-l");
 694                                 add_flag(&ldflags_obst, "-l%s", opt);
 695                         } else if(option[0] == 'L') {
 696                                 const char *opt;
 697                                 GET_ARG_AFTER(opt, "-L");
 698                                 add_flag(&ldflags_obst, "-L%s", opt);
 699                         } else if(SINGLE_OPTION('v')) {
 700                                 verbose = 1;
 701                         } else if(SINGLE_OPTION('w')) {
 702                                 memset(&warning, 0, sizeof(warning));
 703                         } else if(option[0] == 'x') {
 704                                 const char *opt;
 705                                 GET_ARG_AFTER(opt, "-x");
 706                                 forced_filetype = get_filetype_from_string(opt);
 707                                 if (forced_filetype == FILETYPE_UNKNOWN) {
 708                                         fprintf(stderr, "Unknown language '%s'\n", opt);
 709                                         argument_errors = true;
 710                                 }
 711                         } else if (streq(option, "M")) {
 712                                 mode = PreprocessOnly;
 713                                 add_flag(&cppflags_obst, "-M");
 714                         } else if (streq(option, "MMD") ||
 715                                    streq(option, "MD")) {
 716                             construct_dep_target = true;
 717                                 add_flag(&cppflags_obst, "-%s", option);
 718                         } else if(streq(option, "MM")  ||
 719                                    streq(option, "MP")) {
 720                                 add_flag(&cppflags_obst, "-%s", option);
 721                         } else if (streq(option, "MT") ||
 722                                    streq(option, "MQ") ||
 723                                    streq(option, "MF")) {
 724                                 const char *opt;
 725                                 GET_ARG_AFTER(opt, "-MT");
 726                                 add_flag(&cppflags_obst, "-%s", option);
 727                                 add_flag(&cppflags_obst, "%s", opt);
 728                         } else if (streq(option, "pipe")) {
 729                                 /* here for gcc compatibility */
 730                         } else if (option[0] == 'f') {
 731                                 char const *orig_opt;
 732                                 GET_ARG_AFTER(orig_opt, "-f");
 733
 734                                 if (strstart(orig_opt, "align-loops=") ||
 735                                     strstart(orig_opt, "align-jumps=") ||
 736                                     strstart(orig_opt, "align-functions=")) {
 737                                         fprintf(stderr, "ignoring gcc option '-f%s'\n", orig_opt);
 738                                 } else {
 739                                         char const *opt         = orig_opt;
 740                                         bool        truth_value = true;
 741                                         if (opt[0] == 'n' && opt[1] == 'o' && opt[2] == '-') {
 742                                                 truth_value = false;
 743                                                 opt += 3;
 744                                         }
 745
 746                                         if (streq(opt, "dollars-in-identifiers")) {
 747                                                 allow_dollar_in_symbol = truth_value;
 748                                         } if (streq(opt, "builtins")) {
 749                                                 use_builtins = truth_value;
 750                                         } else if (streq(opt, "short-wchar")) {
 751                                                 wchar_atomic_kind = truth_value ? ATOMIC_TYPE_USHORT
 752                                                         : ATOMIC_TYPE_INT;
 753                                         } else if (streq(opt, "syntax-only")) {
 754                                                 mode = truth_value ? ParseOnly : CompileAssembleLink;
 755                                         } else if (streq(opt, "omit-frame-pointer")) {
 756                                                 set_be_option(truth_value ? "omitfp" : "omitfp=no");
 757                                         } else if (streq(opt, "strength-reduce")) {
 758                                                 firm_option(truth_value ? "strength-red" : "no-strength-red");
 759                                         } else if (streq(opt, "fast-math")               ||
 760                                                    streq(opt, "jump-tables")             ||
 761                                                    streq(opt, "unroll-loops")            ||
 762                                                    streq(opt, "expensive-optimizations") ||
 763                                                    streq(opt, "common")                  ||
 764                                                    streq(opt, "PIC")                     ||
 765                                                    streq(opt, "align-loops")             ||
 766                                                    streq(opt, "align-jumps")             ||
 767                                                    streq(opt, "align-functions")) {
 768                                                 fprintf(stderr, "ignoring gcc option '-f%s'\n", orig_opt);
 769                                         } else {
 770                                                 int res = firm_option(orig_opt);
 771                                                 if (res == 0) {
 772                                                         fprintf(stderr, "error: unknown Firm option '-f%s'\n",
 773                                                                 orig_opt);
 774                                                         argument_errors = true;
 775                                                         continue;
 776                                                 } else if (res == -1) {
 777                                                         help_displayed = true;
 778                                                 }
 779                                         }
 780                                 }
 781                         } else if (option[0] == 'b') {
 782                                 const char *opt;
 783                                 GET_ARG_AFTER(opt, "-b");
 784                                 int res = firm_be_option(opt);
 785                                 if (res == 0) {
 786                                         fprintf(stderr, "error: unknown Firm backend option '-b %s'\n",
 787                                                 opt);
 788                                         argument_errors = true;
 789                                 } else if (res == -1) {
 790                                         help_displayed = true;
 791                                 } else if (strstart(opt, "isa=")) {
 792                                         strncpy(cpu_arch, opt, sizeof(cpu_arch));
 793                                 }
 794                         } else if (option[0] == 'W') {
 795                                 if (strstart(option + 1, "l,")) // a gcc-style linker option
 796                                 {
 797                                         const char *opt;
 798                                         GET_ARG_AFTER(opt, "-Wl,");
 799                                         add_flag(&ldflags_obst, "-Wl,%s", opt);
 800                                 }
 801                                 else set_warning_opt(&option[1]);
 802                         } else if(option[0] == 'm') {
 803                                 /* -m options */
 804                                 const char *opt;
 805                                 char arch_opt[64];
 806
 807                                 GET_ARG_AFTER(opt, "-m");
 808                                 if (strstart(opt, "arch=")) {
 809                                         GET_ARG_AFTER(opt, "-march=");
 810                                         snprintf(arch_opt, sizeof(arch_opt), "%s-arch=%s", cpu_arch, opt);
 811                                         int res = firm_be_option(arch_opt);
 812                                         if (res == 0)
 813                                                 argument_errors = true;
 814                                         else {
 815                                                 snprintf(arch_opt, sizeof(arch_opt), "%s-opt=%s", cpu_arch, opt);
 816                                                 int res = firm_be_option(arch_opt);
 817                                                 if (res == 0)
 818                                                         argument_errors = true;
 819                                         }
 820                                 } else if (strstart(opt, "tune=")) {
 821                                         GET_ARG_AFTER(opt, "-mtune=");
 822                                         snprintf(arch_opt, sizeof(arch_opt), "%s-opt=%s", cpu_arch, opt);
 823                                         int res = firm_be_option(arch_opt);
 824                                         if (res == 0)
 825                                                 argument_errors = true;
 826                                 } else if (strstart(opt, "cpu=")) {
 827                                         GET_ARG_AFTER(opt, "-mcpu=");
 828                                         snprintf(arch_opt, sizeof(arch_opt), "%s-arch=%s", cpu_arch, opt);
 829                                         int res = firm_be_option(arch_opt);
 830                                         if (res == 0)
 831                                                 argument_errors = true;
 832                                 } else if (strstart(opt, "fpmath=")) {
 833                                         GET_ARG_AFTER(opt, "-mfpmath=");
 834                                         if (streq(opt, "387"))
 835                                                 opt = "x87";
 836                                         else if (streq(opt, "sse"))
 837                                                 opt = "sse2";
 838                                         else {
 839                                                 fprintf(stderr, "error: option -mfpumath supports only 387 or sse\n");
 840                                                 argument_errors = true;
 841                                         }
 842                                         if(!argument_errors) {
 843                                                 snprintf(arch_opt, sizeof(arch_opt), "%s-fpunit=%s", cpu_arch, opt);
 844                                                 int res = firm_be_option(arch_opt);
 845                                                 if (res == 0)
 846                                                         argument_errors = true;
 847                                         }
 848                                 } else if (strstart(opt, "preferred-stack-boundary=")) {
 849                                         GET_ARG_AFTER(opt, "-mpreferred-stack-boundary=");
 850                                         snprintf(arch_opt, sizeof(arch_opt), "%s-stackalign=%s", cpu_arch, opt);
 851                                         int res = firm_be_option(arch_opt);
 852                                         if (res == 0)
 853                                                 argument_errors = true;
 854                                 } else if (streq(opt, "omit-leaf-frame-pointer")) {
 855                                         set_be_option("omitleaffp=1");
 856                                 } else if (streq(opt, "no-omit-leaf-frame-pointer")) {
 857                                         set_be_option("omitleaffp=0");
 858                                 } else {
 859                                         char *endptr;
 860                                         long int value = strtol(opt, &endptr, 10);
 861                                         if (*endptr != '\0') {
 862                                                 fprintf(stderr, "error: wrong option '-m %s'\n",  opt);
 863                                                 argument_errors = true;
 864                                         }
 865                                         if (value != 16 && value != 32 && value != 64) {
 866                                                 fprintf(stderr, "error: option -m supports only 16, 32 or 64\n");
 867                                                 argument_errors = true;
 868                                         } else {
 869                                                 machine_size = (unsigned int)value;
 870                                         }
 871                                 }
 872                         } else if (streq(option, "pg")) {
 873                                 set_be_option("gprof");
 874                                 add_flag(&ldflags_obst, "-pg");
 875                         } else if (streq(option, "pedantic") ||
 876                                    streq(option, "ansi")) {
 877                                 fprintf(stderr, "warning: ignoring gcc option '%s'\n", arg);
 878                         } else if (streq(option, "shared")) {
 879                                 add_flag(&ldflags_obst, "-shared");
 880                         } else if (strstart(option, "std=")) {
 881                                 const char *const o = &option[4];
 882                                 standard =
 883                                         streq(o, "c++")            ? STANDARD_CXX98   :
 884                                         streq(o, "c++98")          ? STANDARD_CXX98   :
 885                                         streq(o, "c89")            ? STANDARD_C89     :
 886                                         streq(o, "c99")            ? STANDARD_C99     :
 887                                         streq(o, "c9x")            ? STANDARD_C99     : // deprecated
 888                                         streq(o, "gnu++98")        ? STANDARD_GNUXX98 :
 889                                         streq(o, "gnu89")          ? STANDARD_GNU89   :
 890                                         streq(o, "gnu99")          ? STANDARD_GNU99   :
 891                                         streq(o, "gnu9x")          ? STANDARD_GNU99   : // deprecated
 892                                         streq(o, "iso9899:1990")   ? STANDARD_C89     :
 893                                         streq(o, "iso9899:199409") ? STANDARD_C90     :
 894                                         streq(o, "iso9899:1999")   ? STANDARD_C99     :
 895                                         streq(o, "iso9899:199x")   ? STANDARD_C99     : // deprecated
 896                                         (fprintf(stderr, "warning: ignoring gcc option '%s'\n", arg), standard);
 897                         } else if (streq(option, "version")) {
 898                                 print_cparser_version();
 899                         } else if (option[0] == '-') {
 900                                 /* double dash option */
 901                                 ++option;
 902                                 if (streq(option, "gcc")) {
 903                                         features_on  |=  _GNUC;
 904                                         features_off &= ~_GNUC;
 905                                 } else if (streq(option, "no-gcc")) {
 906                                         features_on  &= ~_GNUC;
 907                                         features_off |=  _GNUC;
 908                                 } else if (streq(option, "ms")) {
 909                                         features_on  |=  _MS;
 910                                         features_off &= ~_MS;
 911                                 } else if (streq(option, "no-ms")) {
 912                                         features_on  &= ~_MS;
 913                                         features_off |=  _MS;
 914                                 } else if (streq(option, "signed-chars")) {
 915                                         char_is_signed = true;
 916                                 } else if (streq(option, "unsigned-chars")) {
 917                                         char_is_signed = false;
 918                                 } else if (streq(option, "strict")) {
 919                                         strict_mode = true;
 920                                 } else if (streq(option, "lextest")) {
 921                                         mode = LexTest;
 922                                 } else if (streq(option, "benchmark")) {
 923                                         mode = BenchmarkParser;
 924                                 } else if (streq(option, "print-ast")) {
 925                                         mode = PrintAst;
 926                                 } else if (streq(option, "print-implicit-cast")) {
 927                                         print_implicit_casts = true;
 928                                 } else if (streq(option, "print-parenthesis")) {
 929                                         print_parenthesis = true;
 930                                 } else if (streq(option, "print-fluffy")) {
 931                                         mode = PrintFluffy;
 932                                 } else if (streq(option, "print-caml")) {
 933                                         mode = PrintCaml;
 934                                 } else if (streq(option, "version")) {
 935                                         print_cparser_version();
 936                                         exit(EXIT_SUCCESS);
 937                                 } else if (streq(option, "dump-function")) {
 938                                         ++i;
 939                                         if(i >= argc) {
 940                                                 fprintf(stderr, "error: "
 941                                                         "expected argument after '--dump-function'\n");
 942                                                 argument_errors = true;
 943                                                 break;
 944                                         }
 945                                         dumpfunction = argv[i];
 946                                         mode         = CompileDump;
 947                                 } else {
 948                                         fprintf(stderr, "error: unknown argument '%s'\n", arg);
 949                                         argument_errors = true;
 950                                 }
 951                         } else {
 952                                 fprintf(stderr, "error: unknown argument '%s'\n", arg);
 953                                 argument_errors = true;
 954                         }
 955                 } else {
 956                         filetype_t type = forced_filetype;
 957                         if (type == FILETYPE_AUTODETECT) {
 958                                 if (streq(arg, "-")) {
 959                                         /* - implicitly means C source file */
 960                                         type = FILETYPE_C;
 961                                 } else {
 962                                         const char *suffix = strrchr(arg, '.');
 963                                         /* Ensure there is at least one char before the suffix */
 964                                         if (suffix != NULL && suffix != arg) {
 965                                                 ++suffix;
 966                                                 type =
 967                                                         streq(suffix, "S")   ? FILETYPE_ASSEMBLER              :
 968                                                         streq(suffix, "a")   ? FILETYPE_OBJECT                 :
 969                                                         streq(suffix, "c")   ? FILETYPE_C                      :
 970                                                         streq(suffix, "cc")  ? FILETYPE_CXX                    :
 971                                                         streq(suffix, "cpp") ? FILETYPE_CXX                    :
 972                                                         streq(suffix, "cxx") ? FILETYPE_CXX                    :
 973                                                         streq(suffix, "h")   ? FILETYPE_C                      :
 974                                                         streq(suffix, "o")   ? FILETYPE_OBJECT                 :
 975                                                         streq(suffix, "s")   ? FILETYPE_PREPROCESSED_ASSEMBLER :
 976                                                         streq(suffix, "so")  ? FILETYPE_OBJECT                 :
 977                                                         FILETYPE_AUTODETECT;
 978                                         }
 979                                 }
 980
 981                                 if (type == FILETYPE_AUTODETECT) {
 982                                         fprintf(stderr, "'%s': file format not recognized\n", arg);
 983                                         continue;
 984                                 }
 985                         }
 986
 987                         file_list_entry_t *entry
 988                                 = obstack_alloc(&file_obst, sizeof(entry[0]));
 989                         memset(entry, 0, sizeof(entry[0]));
 990                         entry->name = arg;
 991                         entry->type = type;
 992
 993                         if (last_file != NULL) {
 994                                 last_file->next = entry;
 995                         } else {
 996                                 files = entry;
 997                         }
 998                         last_file = entry;
 999                 }
1000         }
1001
1002         if (files == NULL) {
1003                 fprintf(stderr, "error: no input files specified\n");
1004                 argument_errors = true;
1005         }
1006
1007         if (help_displayed) {
1008                 return !argument_errors;
1009         }
1010         if (argument_errors) {
1011                 usage(argv[0]);
1012                 return 1;
1013         }
1014
1015         /* we do the lowering in ast2firm */
1016         firm_opt.lower_bitfields = FALSE;
1017
1018         gen_firm_init();
1019         init_symbol_table();
1020         init_types();
1021         init_typehash();
1022         init_basic_types();
1023         init_lexer();
1024         init_ast();
1025         init_parser();
1026         init_ast2firm();
1027
1028         if (construct_dep_target) {
1029                 if (outname != 0 && strlen(outname) >= 2) {
1030                         get_output_name(dep_target, sizeof(dep_target), outname, ".d");
1031                 } else {
1032                         get_output_name(dep_target, sizeof(dep_target), files->name, ".d");
1033                 }
1034         } else {
1035                 dep_target[0] = '\0';
1036         }
1037
1038         char outnamebuf[4096];
1039         if (outname == NULL) {
1040                 const char *filename = files->name;
1041
1042                 switch(mode) {
1043                 case BenchmarkParser:
1044                 case PrintAst:
1045                 case PrintFluffy:
1046                 case PrintCaml:
1047                 case LexTest:
1048                 case PreprocessOnly:
1049                 case ParseOnly:
1050                         outname = "-";
1051                         break;
1052                 case Compile:
1053                         get_output_name(outnamebuf, sizeof(outnamebuf), filename, ".s");
1054                         outname = outnamebuf;
1055                         break;
1056                 case CompileAssemble:
1057                         get_output_name(outnamebuf, sizeof(outnamebuf), filename, ".o");
1058                         outname = outnamebuf;
1059                         break;
1060                 case CompileDump:
1061                         get_output_name(outnamebuf, sizeof(outnamebuf), dumpfunction,
1062                                         ".vcg");
1063                         outname = outnamebuf;
1064                         break;
1065                 case CompileAssembleLink:
1066 #ifdef _WIN32
1067                         outname = "a.exe";
1068 #else
1069                         outname = "a.out";
1070 #endif
1071                         break;
1072                 }
1073         }
1074
1075         assert(outname != NULL);
1076
1077         FILE *out;
1078         if (streq(outname, "-")) {
1079                 out = stdout;
1080         } else {
1081                 out = fopen(outname, "w");
1082                 if(out == NULL) {
1083                         fprintf(stderr, "Couldn't open '%s' for writing: %s\n", outname,
1084                                         strerror(errno));
1085                         return 1;
1086                 }
1087         }
1088
1089         file_list_entry_t *file;
1090         for (file = files; file != NULL; file = file->next) {
1091                 char        asm_tempfile[1024];
1092                 const char *filename = file->name;
1093                 filetype_t  filetype = file->type;
1094
1095                 if (filetype == FILETYPE_OBJECT)
1096                         continue;
1097
1098                 FILE *in = NULL;
1099                 if (mode == LexTest) {
1100                         if (in == NULL)
1101                                 in = open_file(filename);
1102                         lextest(in, filename);
1103                         fclose(in);
1104                         exit(EXIT_SUCCESS);
1105                 }
1106
1107                 FILE *preprocessed_in = NULL;
1108                 switch (filetype) {
1109                         case FILETYPE_C:         filetype = FILETYPE_PREPROCESSED_C;         goto preprocess;
1110                         case FILETYPE_CXX:       filetype = FILETYPE_PREPROCESSED_CXX;       goto preprocess;
1111                         case FILETYPE_ASSEMBLER: filetype = FILETYPE_PREPROCESSED_ASSEMBLER; goto preprocess;
1112 preprocess:
1113                                 /* no support for input on FILE* yet */
1114                                 if (in != NULL)
1115                                         panic("internal compiler error: in for preprocessor != NULL");
1116
1117                                 preprocessed_in = preprocess(filename);
1118                                 if (mode == PreprocessOnly) {
1119                                         copy_file(out, preprocessed_in);
1120                                         int result = pclose(preprocessed_in);
1121                                         fclose(out);
1122                                         return result;
1123                                 }
1124
1125                                 in = preprocessed_in;
1126                                 break;
1127
1128                         default:
1129                                 break;
1130                 }
1131
1132                 FILE *asm_out;
1133                 if(mode == Compile) {
1134                         asm_out = out;
1135                 } else {
1136                         asm_out = make_temp_file(asm_tempfile, sizeof(asm_tempfile), "ccs");
1137                 }
1138
1139                 if (in == NULL)
1140                         in = open_file(filename);
1141
1142                 /* preprocess and compile */
1143                 if (filetype == FILETYPE_PREPROCESSED_C) {
1144                         char const* invalid_mode;
1145                         switch (standard) {
1146                                 case STANDARD_ANSI:
1147                                 case STANDARD_C89:   c_mode = _C89;                break;
1148                                 /* TODO ^v determine difference between these two */
1149                                 case STANDARD_C90:   c_mode = _C89;                break;
1150                                 case STANDARD_C99:   c_mode = _C89 | _C99;         break;
1151                                 case STANDARD_GNU89: c_mode = _C89 |        _GNUC; break;
1152
1153 default_c_warn:
1154                                         fprintf(stderr,
1155                                                         "warning: command line option \"-std=%s\" is not valid for C\n",
1156                                                         invalid_mode);
1157                                         /* FALLTHROUGH */
1158                                 case STANDARD_DEFAULT:
1159                                 case STANDARD_GNU99:   c_mode = _C89 | _C99 | _GNUC; break;
1160
1161                                 case STANDARD_CXX98:   invalid_mode = "c++98"; goto default_c_warn;
1162                                 case STANDARD_GNUXX98: invalid_mode = "gnu98"; goto default_c_warn;
1163                         }
1164                         goto do_parsing;
1165                 } else if (filetype == FILETYPE_PREPROCESSED_CXX) {
1166                         char const* invalid_mode;
1167                         switch (standard) {
1168                                 case STANDARD_C89:   invalid_mode = "c89";   goto default_cxx_warn;
1169                                 case STANDARD_C90:   invalid_mode = "c90";   goto default_cxx_warn;
1170                                 case STANDARD_C99:   invalid_mode = "c99";   goto default_cxx_warn;
1171                                 case STANDARD_GNU89: invalid_mode = "gnu89"; goto default_cxx_warn;
1172                                 case STANDARD_GNU99: invalid_mode = "gnu99"; goto default_cxx_warn;
1173
1174                                 case STANDARD_ANSI:
1175                                 case STANDARD_CXX98: c_mode = _CXX; break;
1176
1177 default_cxx_warn:
1178                                         fprintf(stderr,
1179                                                         "warning: command line option \"-std=%s\" is not valid for C++\n",
1180                                                         invalid_mode);
1181                                 case STANDARD_DEFAULT:
1182                                 case STANDARD_GNUXX98: c_mode = _CXX | _GNUC; break;
1183                         }
1184
1185 do_parsing:
1186                         c_mode |= features_on;
1187                         c_mode &= ~features_off;
1188                         init_tokens();
1189                         translation_unit_t *const unit = do_parsing(in, filename);
1190
1191                         /* prints the AST even if errors occurred */
1192                         if (mode == PrintAst) {
1193                                 type_set_output(out);
1194                                 ast_set_output(out);
1195                                 print_ast(unit);
1196                         }
1197
1198                         if(error_count > 0) {
1199                                 /* parsing failed because of errors */
1200                                 fprintf(stderr, "%u error(s), %u warning(s)\n", error_count,
1201                                         warning_count);
1202                                 result = EXIT_FAILURE;
1203                                 continue;
1204                         } else if(warning_count > 0) {
1205                                 fprintf(stderr, "%u warning(s)\n", warning_count);
1206                         }
1207
1208                         if (in == preprocessed_in) {
1209                                 int pp_result = pclose(preprocessed_in);
1210                                 if (pp_result != EXIT_SUCCESS) {
1211                                         exit(EXIT_FAILURE);
1212                                 }
1213                         }
1214
1215                         if(mode == BenchmarkParser) {
1216                                 return result;
1217                         } else if(mode == PrintFluffy) {
1218                                 write_fluffy_decls(out, unit);
1219                                 continue;
1220                         } else if (mode == PrintCaml) {
1221                                 write_caml_decls(out, unit);
1222                                 continue;
1223                         }
1224
1225                         translation_unit_to_firm(unit);
1226
1227                         if (mode == ParseOnly) {
1228                                 continue;
1229                         }
1230
1231                         if (mode == CompileDump) {
1232                                 /* find irg */
1233                                 ident    *id     = new_id_from_str(dumpfunction);
1234                                 ir_graph *irg    = NULL;
1235                                 int       n_irgs = get_irp_n_irgs();
1236                                 for(int i = 0; i < n_irgs; ++i) {
1237                                         ir_graph *tirg   = get_irp_irg(i);
1238                                         ident    *irg_id = get_entity_ident(get_irg_entity(tirg));
1239                                         if(irg_id == id) {
1240                                                 irg = tirg;
1241                                                 break;
1242                                         }
1243                                 }
1244
1245                                 if(irg == NULL) {
1246                                         fprintf(stderr, "No graph for function '%s' found\n",
1247                                                 dumpfunction);
1248                                         exit(1);
1249                                 }
1250
1251                                 dump_ir_block_graph_file(irg, out);
1252                                 fclose(out);
1253                                 exit(0);
1254                         }
1255
1256                         gen_firm_finish(asm_out, filename, /*c_mode=*/1,
1257                                         have_const_functions);
1258                         if (asm_out != out) {
1259                                 fclose(asm_out);
1260                         }
1261                 } else if (filetype == FILETYPE_PREPROCESSED_ASSEMBLER) {
1262                         copy_file(asm_out, in);
1263                         if (in == preprocessed_in) {
1264                                 int pp_result = pclose(preprocessed_in);
1265                                 if (pp_result != EXIT_SUCCESS) {
1266                                         return pp_result;
1267                                 }
1268                         }
1269                         if(asm_out != out) {
1270                                 fclose(asm_out);
1271                         }
1272                 }
1273
1274                 if (mode == Compile)
1275                         continue;
1276
1277                 /* if we're here then we have preprocessed assembly */
1278                 filename = asm_tempfile;
1279                 filetype = FILETYPE_PREPROCESSED_ASSEMBLER;
1280
1281                 /* assemble */
1282                 if (filetype == FILETYPE_PREPROCESSED_ASSEMBLER) {
1283                         char        temp[1024];
1284                         const char *filename_o;
1285                         if(mode == CompileAssemble) {
1286                                 fclose(out);
1287                                 filename_o = outname;
1288                         } else {
1289                                 FILE *tempf = make_temp_file(temp, sizeof(temp), "cco");
1290                                 fclose(tempf);
1291                                 filename_o = temp;
1292                         }
1293
1294                         assemble(filename_o, filename);
1295
1296                         size_t len = strlen(filename_o) + 1;
1297                         filename = obstack_copy(&file_obst, filename_o, len);
1298                         filetype = FILETYPE_OBJECT;
1299                 }
1300
1301                 /* ok we're done here, process next file */
1302                 file->name = filename;
1303                 file->type = filetype;
1304         }
1305
1306         if (result != EXIT_SUCCESS)
1307                 return result;
1308
1309         /* link program file */
1310         if(mode == CompileAssembleLink) {
1311                 obstack_1grow(&ldflags_obst, '\0');
1312                 const char *flags = obstack_finish(&ldflags_obst);
1313
1314                 /* construct commandline */
1315                 obstack_printf(&file_obst, "%s", LINKER);
1316                 for (file_list_entry_t *entry = files; entry != NULL;
1317                                 entry = entry->next) {
1318                         if (entry->type != FILETYPE_OBJECT)
1319                                 continue;
1320
1321                         add_flag(&file_obst, "%s", entry->name);
1322                 }
1323
1324                 add_flag(&file_obst, "-o");
1325                 add_flag(&file_obst, outname);
1326                 obstack_printf(&file_obst, "%s", flags);
1327                 obstack_1grow(&file_obst, '\0');
1328
1329                 char *commandline = obstack_finish(&file_obst);
1330
1331                 if(verbose) {
1332                         puts(commandline);
1333                 }
1334                 int err = system(commandline);
1335                 if(err != EXIT_SUCCESS) {
1336                         fprintf(stderr, "linker reported an error\n");
1337                         exit(1);
1338                 }
1339         }
1340
1341         obstack_free(&cppflags_obst, NULL);
1342         obstack_free(&ldflags_obst, NULL);
1343         obstack_free(&file_obst, NULL);
1344
1345         exit_ast2firm();
1346         exit_parser();
1347         exit_ast();
1348         exit_lexer();
1349         exit_typehash();
1350         exit_types();
1351         exit_tokens();
1352         exit_symbol_table();
1353         return 0;
1354 }