nsz Git - cparser/blob - main.c

   1 /*
   2  * This file is part of cparser.
   3  * Copyright (C) 2007-2009 Matthias Braun <matze@braunis.de>
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License
   7  * as published by the Free Software Foundation; either version 2
   8  * of the License, or (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  18  * 02111-1307, USA.
  19  */
  20 #include <config.h>
  21
  22 #define _GNU_SOURCE
  23
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26 #include <stdbool.h>
  27 #include <errno.h>
  28 #include <string.h>
  29 #include <assert.h>
  30
  31 #ifdef _WIN32
  32
  33 #include <fcntl.h>
  34 #include <io.h>
  35
  36 /* no eXecute on Win32 */
  37 #define X_OK 0
  38 #define W_OK 2
  39 #define R_OK 4
  40
  41 #define O_RDWR          _O_RDWR
  42 #define O_CREAT         _O_CREAT
  43 #define O_EXCL          _O_EXCL
  44 #define O_BINARY        _O_BINARY
  45
  46 /* remap some names, we are not in the POSIX world */
  47 #define access(fname, mode)      _access(fname, mode)
  48 #define mktemp(tmpl)             _mktemp(tmpl)
  49 #define open(fname, oflag, mode) _open(fname, oflag, mode)
  50 #define fdopen(fd, mode)         _fdopen(fd, mode)
  51 #define popen(cmd, mode)         _popen(cmd, mode)
  52 #define pclose(file)             _pclose(file)
  53 #define unlink(filename)         _unlink(filename)
  54
  55 #else
  56 #include <unistd.h>
  57 #define HAVE_MKSTEMP
  58 #endif
  59
  60 #include <libfirm/firm.h>
  61 #include <libfirm/be.h>
  62
  63 #include "lexer.h"
  64 #include "token_t.h"
  65 #include "types.h"
  66 #include "type_hash.h"
  67 #include "parser.h"
  68 #include "type_t.h"
  69 #include "ast2firm.h"
  70 #include "diagnostic.h"
  71 #include "lang_features.h"
  72 #include "driver/firm_opt.h"
  73 #include "driver/firm_cmdline.h"
  74 #include "driver/firm_timing.h"
  75 #include "adt/error.h"
  76 #include "wrappergen/write_fluffy.h"
  77 #include "wrappergen/write_caml.h"
  78 #include "wrappergen/write_jna.h"
  79 #include "revision.h"
  80 #include "warning.h"
  81 #include "mangle.h"
  82 #include "printer.h"
  83
  84 #ifndef PREPROCESSOR
  85 #ifndef __WIN32__
  86 #define PREPROCESSOR "gcc -E -m32 -U__STRICT_ANSI__"
  87 #else
  88 #define PREPROCESSOR "cpp -m32 -U__STRICT_ANSI__"
  89 #endif
  90 #endif
  91
  92 #ifndef LINKER
  93 #define LINKER    "gcc -m32"
  94 #endif
  95
  96 #ifndef ASSEMBLER
  97 #ifdef __APPLE__
  98 #define ASSEMBLER "gcc -m32 -c -xassembler"
  99 #else
 100 #define ASSEMBLER "as --32"
 101 #endif
 102 #endif
 103
 104 /** The current c mode/dialect. */
 105 unsigned int c_mode = _C89 | _ANSI | _C99 | _GNUC;
 106
 107 /** The 'machine size', 16, 32 or 64 bit, 32bit is the default. */
 108 unsigned int machine_size = 32;
 109
 110 /** true if the char type is signed. */
 111 bool char_is_signed = true;
 112
 113 /** true for strict language checking. */
 114 bool strict_mode = false;
 115
 116 /** use builtins for some libc functions */
 117 bool use_builtins = false;
 118
 119 /** we have extern function with const attribute. */
 120 bool have_const_functions = false;
 121
 122 atomic_type_kind_t wchar_atomic_kind = ATOMIC_TYPE_INT;
 123
 124 /* to switch on printing of implicit casts */
 125 extern bool print_implicit_casts;
 126
 127 /* to switch on printing of parenthesis to indicate operator precedence */
 128 extern bool print_parenthesis;
 129
 130 static int             verbose;
 131 static struct obstack  cppflags_obst, ldflags_obst;
 132 static char            dep_target[1024];
 133 static const char     *outname;
 134
 135 typedef enum lang_standard_t {
 136         STANDARD_DEFAULT, /* gnu99 (for C, GCC does gnu89) or gnu++98 (for C++) */
 137         STANDARD_ANSI,    /* c89 (for C) or c++98 (for C++) */
 138         STANDARD_C89,     /* ISO C90 (sic) */
 139         STANDARD_C90,     /* ISO C90 as modified in amendment 1 */
 140         STANDARD_C99,     /* ISO C99 */
 141         STANDARD_GNU89,   /* ISO C90 plus GNU extensions (including some C99) */
 142         STANDARD_GNU99,   /* ISO C99 plus GNU extensions */
 143         STANDARD_CXX98,   /* ISO C++ 1998 plus amendments */
 144         STANDARD_GNUXX98  /* ISO C++ 1998 plus amendments and GNU extensions */
 145 } lang_standard_t;
 146
 147 static lang_standard_t standard;
 148
 149 typedef struct file_list_entry_t file_list_entry_t;
 150
 151 typedef enum filetype_t {
 152         FILETYPE_AUTODETECT,
 153         FILETYPE_C,
 154         FILETYPE_PREPROCESSED_C,
 155         FILETYPE_CXX,
 156         FILETYPE_PREPROCESSED_CXX,
 157         FILETYPE_ASSEMBLER,
 158         FILETYPE_PREPROCESSED_ASSEMBLER,
 159         FILETYPE_OBJECT,
 160         FILETYPE_IR,
 161         FILETYPE_UNKNOWN
 162 } filetype_t;
 163
 164 struct file_list_entry_t {
 165         const char  *name; /**< filename or NULL for stdin */
 166         filetype_t   type;
 167         file_list_entry_t *next;
 168 };
 169
 170 static file_list_entry_t *temp_files;
 171
 172 #if defined(_DEBUG) || defined(FIRM_DEBUG)
 173 /**
 174  * Debug printf implementation.
 175  *
 176  * @param fmt  printf style format parameter
 177  */
 178 void dbg_printf(const char *fmt, ...)
 179 {
 180         va_list list;
 181
 182         if (firm_dump.debug_print) {
 183                 va_start(list, fmt);
 184                 vprintf(fmt, list);
 185                 va_end(list);
 186         }  /* if */
 187 }
 188 #endif /* defined(_DEBUG) || defined(FIRM_DEBUG) */
 189
 190 static void initialize_firm(void)
 191 {
 192         firm_early_init();
 193
 194         dump_consts_local(1);
 195         dump_keepalive_edges(1);
 196 }
 197
 198 static void get_output_name(char *buf, size_t buflen, const char *inputname,
 199                             const char *newext)
 200 {
 201         if (inputname == NULL)
 202                 inputname = "a";
 203
 204         char const *const last_slash = strrchr(inputname, '/');
 205         char const *const filename   =
 206                 last_slash != NULL ? last_slash + 1 : inputname;
 207         char const *const last_dot   = strrchr(filename, '.');
 208         char const *const name_end   =
 209                 last_dot != NULL ? last_dot : strchr(filename, '\0');
 210
 211         int const len = snprintf(buf, buflen, "%.*s%s",
 212                         (int)(name_end - filename), filename, newext);
 213 #ifdef _WIN32
 214         if (len < 0 || buflen <= (size_t)len)
 215 #else
 216         if (buflen <= (size_t)len)
 217 #endif
 218                 panic("filename too long");
 219 }
 220
 221 #include "gen_builtins.h"
 222
 223 static translation_unit_t *do_parsing(FILE *const in, const char *const input_name)
 224 {
 225         start_parsing();
 226
 227         if (use_builtins) {
 228                 lexer_open_buffer(builtins, sizeof(builtins)-1, "<builtin>");
 229                 parse();
 230         }
 231
 232         lexer_open_stream(in, input_name);
 233         parse();
 234
 235         translation_unit_t *unit = finish_parsing();
 236         return unit;
 237 }
 238
 239 static void lextest(FILE *in, const char *fname)
 240 {
 241         lexer_open_stream(in, fname);
 242
 243         do {
 244                 lexer_next_preprocessing_token();
 245                 print_token(stdout, &lexer_token);
 246                 putchar('\n');
 247         } while (lexer_token.type != T_EOF);
 248 }
 249
 250 static void add_flag(struct obstack *obst, const char *format, ...)
 251 {
 252         char buf[65536];
 253         va_list ap;
 254
 255         va_start(ap, format);
 256 #ifdef _WIN32
 257         int len =
 258 #endif
 259                 vsnprintf(buf, sizeof(buf), format, ap);
 260         va_end(ap);
 261
 262         obstack_1grow(obst, ' ');
 263 #ifdef _WIN32
 264         obstack_1grow(obst, '"');
 265         obstack_grow(obst, buf, len);
 266         obstack_1grow(obst, '"');
 267 #else
 268         /* escape stuff... */
 269         for (char *c = buf; *c != '\0'; ++c) {
 270                 switch(*c) {
 271                 case ' ':
 272                 case '"':
 273                 case '$':
 274                 case '&':
 275                 case '(':
 276                 case ')':
 277                 case ';':
 278                 case '<':
 279                 case '>':
 280                 case '\'':
 281                 case '\\':
 282                 case '\n':
 283                 case '\r':
 284                 case '\t':
 285                 case '`':
 286                 case '|':
 287                         obstack_1grow(obst, '\\');
 288                         /* FALLTHROUGH */
 289                 default:
 290                         obstack_1grow(obst, *c);
 291                         break;
 292                 }
 293         }
 294 #endif
 295 }
 296
 297 static const char *type_to_string(type_t *type)
 298 {
 299         assert(type->kind == TYPE_ATOMIC);
 300         return get_atomic_kind_name(type->atomic.akind);
 301 }
 302
 303 static FILE *preprocess(const char *fname, filetype_t filetype)
 304 {
 305         static const char *common_flags = NULL;
 306
 307         if (common_flags == NULL) {
 308                 obstack_1grow(&cppflags_obst, '\0');
 309                 const char *flags = obstack_finish(&cppflags_obst);
 310
 311                 /* setup default defines */
 312                 add_flag(&cppflags_obst, "-U__WCHAR_TYPE__");
 313                 add_flag(&cppflags_obst, "-D__WCHAR_TYPE__=%s", type_to_string(type_wchar_t));
 314                 add_flag(&cppflags_obst, "-U__SIZE_TYPE__");
 315                 add_flag(&cppflags_obst, "-D__SIZE_TYPE__=%s", type_to_string(type_size_t));
 316
 317                 add_flag(&cppflags_obst, "-U__VERSION__");
 318                 add_flag(&cppflags_obst, "-D__VERSION__=\"%s\"", cparser_REVISION);
 319
 320                 if (flags[0] != '\0') {
 321                         size_t len = strlen(flags);
 322                         obstack_1grow(&cppflags_obst, ' ');
 323                         obstack_grow(&cppflags_obst, flags, len);
 324                 }
 325                 obstack_1grow(&cppflags_obst, '\0');
 326                 common_flags = obstack_finish(&cppflags_obst);
 327         }
 328
 329         assert(obstack_object_size(&cppflags_obst) == 0);
 330
 331         const char *preprocessor = getenv("CPARSER_PP");
 332         if (preprocessor == NULL)
 333                 preprocessor = PREPROCESSOR;
 334
 335         obstack_printf(&cppflags_obst, "%s ", preprocessor);
 336         switch (filetype) {
 337         case FILETYPE_C:
 338                 add_flag(&cppflags_obst, "-std=c99");
 339                 break;
 340         case FILETYPE_CXX:
 341                 add_flag(&cppflags_obst, "-std=c++98");
 342                 break;
 343         case FILETYPE_ASSEMBLER:
 344                 add_flag(&cppflags_obst, "-x");
 345                 add_flag(&cppflags_obst, "assembler-with-cpp");
 346                 break;
 347         default:
 348                 break;
 349         }
 350         obstack_printf(&cppflags_obst, "%s", common_flags);
 351
 352         /* handle dependency generation */
 353         if (dep_target[0] != '\0') {
 354                 add_flag(&cppflags_obst, "-MF");
 355                 add_flag(&cppflags_obst, dep_target);
 356                 if (outname != NULL) {
 357                                 add_flag(&cppflags_obst, "-MQ");
 358                                 add_flag(&cppflags_obst, outname);
 359                 }
 360         }
 361         add_flag(&cppflags_obst, fname);
 362
 363         obstack_1grow(&cppflags_obst, '\0');
 364         char *buf = obstack_finish(&cppflags_obst);
 365         if (verbose) {
 366                 puts(buf);
 367         }
 368
 369         FILE *f = popen(buf, "r");
 370         if (f == NULL) {
 371                 fprintf(stderr, "invoking preprocessor failed\n");
 372                 exit(1);
 373         }
 374
 375         /* we don't really need that anymore */
 376         obstack_free(&cppflags_obst, buf);
 377
 378         return f;
 379 }
 380
 381 static void assemble(const char *out, const char *in)
 382 {
 383         char buf[65536];
 384
 385         const char *assembler = getenv("CPARSER_AS");
 386         if (assembler == NULL)
 387                 assembler = ASSEMBLER;
 388
 389         snprintf(buf, sizeof(buf), "%s %s -o %s", assembler, in, out);
 390         if (verbose) {
 391                 puts(buf);
 392         }
 393
 394         int err = system(buf);
 395         if (err != 0) {
 396                 fprintf(stderr, "assembler reported an error\n");
 397                 exit(1);
 398         }
 399 }
 400
 401 static void print_file_name(const char *file)
 402 {
 403         add_flag(&ldflags_obst, "-print-file-name=%s", file);
 404
 405         obstack_1grow(&ldflags_obst, '\0');
 406         const char *flags = obstack_finish(&ldflags_obst);
 407
 408         /* construct commandline */
 409         const char *linker = getenv("CPARSER_LINK");
 410         if (linker == NULL)
 411                 linker = LINKER;
 412         obstack_printf(&ldflags_obst, "%s ", linker);
 413         obstack_printf(&ldflags_obst, "%s", flags);
 414         obstack_1grow(&ldflags_obst, '\0');
 415
 416         char *commandline = obstack_finish(&ldflags_obst);
 417
 418         if (verbose) {
 419                 puts(commandline);
 420         }
 421         int err = system(commandline);
 422         if (err != EXIT_SUCCESS) {
 423                 fprintf(stderr, "linker reported an error\n");
 424                 exit(1);
 425         }
 426 }
 427
 428 static const char *try_dir(const char *dir)
 429 {
 430         if (dir == NULL)
 431                 return dir;
 432         if (access(dir, R_OK | W_OK | X_OK) == 0)
 433                 return dir;
 434         return NULL;
 435 }
 436
 437 static const char *get_tempdir(void)
 438 {
 439         static const char *tmpdir = NULL;
 440
 441         if (tmpdir != NULL)
 442                 return tmpdir;
 443
 444         if (tmpdir == NULL)
 445                 tmpdir = try_dir(getenv("TMPDIR"));
 446         if (tmpdir == NULL)
 447                 tmpdir = try_dir(getenv("TMP"));
 448         if (tmpdir == NULL)
 449                 tmpdir = try_dir(getenv("TEMP"));
 450
 451 #ifdef P_tmpdir
 452         if (tmpdir == NULL)
 453                 tmpdir = try_dir(P_tmpdir);
 454 #endif
 455
 456         if (tmpdir == NULL)
 457                 tmpdir = try_dir("/var/tmp");
 458         if (tmpdir == NULL)
 459                 tmpdir = try_dir("/usr/tmp");
 460         if (tmpdir == NULL)
 461                 tmpdir = try_dir("/tmp");
 462
 463         if (tmpdir == NULL)
 464                 tmpdir = ".";
 465
 466         return tmpdir;
 467 }
 468
 469 #ifndef HAVE_MKSTEMP
 470 /* cheap and nasty mkstemp replacement */
 471 static int mkstemp(char *templ)
 472 {
 473         mktemp(templ);
 474         return open(templ, O_RDWR|O_CREAT|O_EXCL|O_BINARY, 0600);
 475 }
 476 #endif
 477
 478 /**
 479  * an own version of tmpnam, which: writes in a buffer, emits no warnings
 480  * during linking (like glibc/gnu ld do for tmpnam)...
 481  */
 482 static FILE *make_temp_file(char *buffer, size_t buflen, const char *prefix)
 483 {
 484         const char *tempdir = get_tempdir();
 485
 486         snprintf(buffer, buflen, "%s/%sXXXXXX", tempdir, prefix);
 487
 488         int fd = mkstemp(buffer);
 489         if (fd == -1) {
 490                 fprintf(stderr, "couldn't create temporary file: %s\n",
 491                         strerror(errno));
 492                 exit(1);
 493         }
 494         FILE *out = fdopen(fd, "w");
 495         if (out == NULL) {
 496                 fprintf(stderr, "couldn't create temporary file FILE*\n");
 497                 exit(1);
 498         }
 499
 500         file_list_entry_t *entry = xmalloc(sizeof(*entry));
 501         memset(entry, 0, sizeof(*entry));
 502
 503         size_t  name_len = strlen(buffer) + 1;
 504         char   *name     = malloc(name_len);
 505         memcpy(name, buffer, name_len);
 506         entry->name      = name;
 507
 508         entry->next = temp_files;
 509         temp_files  = entry;
 510
 511         return out;
 512 }
 513
 514 static void free_temp_files(void)
 515 {
 516         file_list_entry_t *entry = temp_files;
 517         file_list_entry_t *next;
 518         for ( ; entry != NULL; entry = next) {
 519                 next = entry->next;
 520
 521                 unlink(entry->name);
 522                 free((char*) entry->name);
 523                 free(entry);
 524         }
 525         temp_files = NULL;
 526 }
 527
 528 /**
 529  * Do the necessary lowering for compound parameters.
 530  */
 531 void lower_compound_params(void)
 532 {
 533         lower_params_t params;
 534
 535         params.def_ptr_alignment    = 4;
 536         params.flags                = LF_COMPOUND_RETURN | LF_RETURN_HIDDEN;
 537         params.hidden_params        = ADD_HIDDEN_ALWAYS_IN_FRONT;
 538         params.find_pointer_type    = NULL;
 539         params.ret_compound_in_regs = NULL;
 540         lower_calls_with_compounds(&params);
 541 }
 542
 543 typedef enum compile_mode_t {
 544         BenchmarkParser,
 545         PreprocessOnly,
 546         ParseOnly,
 547         Compile,
 548         CompileDump,
 549         CompileExportIR,
 550         CompileAssemble,
 551         CompileAssembleLink,
 552         LexTest,
 553         PrintAst,
 554         PrintFluffy,
 555         PrintCaml,
 556         PrintJna
 557 } compile_mode_t;
 558
 559 static void usage(const char *argv0)
 560 {
 561         fprintf(stderr, "Usage %s input [-o output] [-c]\n", argv0);
 562 }
 563
 564 static void print_cparser_version(void)
 565 {
 566         printf("cparser (%s) using libFirm (%u.%u",
 567                cparser_REVISION, ir_get_version_major(),
 568                ir_get_version_minor());
 569
 570         const char *revision = ir_get_version_revision();
 571         if (revision[0] != 0) {
 572                 putchar(' ');
 573                 fputs(revision, stdout);
 574         }
 575
 576         const char *build = ir_get_version_build();
 577         if (build[0] != 0) {
 578                 putchar(' ');
 579                 fputs(build, stdout);
 580         }
 581         puts(")");
 582         puts("This is free software; see the source for copying conditions.  There is NO\n"
 583              "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n");
 584 }
 585
 586 static void set_be_option(const char *arg)
 587 {
 588         int res = firm_be_option(arg);
 589         (void) res;
 590         assert(res);
 591 }
 592
 593 static void set_option(const char *arg)
 594 {
 595         int res = firm_option(arg);
 596         (void) res;
 597         assert(res);
 598 }
 599
 600 static void copy_file(FILE *dest, FILE *input)
 601 {
 602         char buf[16384];
 603
 604         while (!feof(input) && !ferror(dest)) {
 605                 size_t read = fread(buf, 1, sizeof(buf), input);
 606                 if (fwrite(buf, 1, read, dest) != read) {
 607                         perror("couldn't write output");
 608                 }
 609         }
 610 }
 611
 612 static inline bool streq(char const* a, char const* b)
 613 {
 614         return strcmp(a, b) == 0;
 615 }
 616
 617 static inline bool strstart(char const* str, char const* start)
 618 {
 619         do {
 620                 if (*start == '\0')
 621                         return true;
 622         } while (*str++ == *start++);
 623         return false;
 624 }
 625
 626 static FILE *open_file(const char *filename)
 627 {
 628         if (streq(filename, "-")) {
 629                 return stdin;
 630         }
 631
 632         FILE *in = fopen(filename, "r");
 633         if (in == NULL) {
 634                 fprintf(stderr, "Couldn't open '%s': %s\n", filename,
 635                                 strerror(errno));
 636                 exit(1);
 637         }
 638
 639         return in;
 640 }
 641
 642 static filetype_t get_filetype_from_string(const char *string)
 643 {
 644         if (streq(string, "c") || streq(string, "c-header"))
 645                 return FILETYPE_C;
 646         if (streq(string, "c++") || streq(string, "c++-header"))
 647                 return FILETYPE_CXX;
 648         if (streq(string, "assembler"))
 649                 return FILETYPE_PREPROCESSED_ASSEMBLER;
 650         if (streq(string, "assembler-with-cpp"))
 651                 return FILETYPE_ASSEMBLER;
 652         if (streq(string, "none"))
 653                 return FILETYPE_AUTODETECT;
 654
 655         return FILETYPE_UNKNOWN;
 656 }
 657
 658 static void init_os_support(void)
 659 {
 660         /* OS option must be set to the backend */
 661         switch (firm_opt.os_support) {
 662         case OS_SUPPORT_MINGW:
 663                 set_be_option("ia32-gasmode=mingw");
 664                 wchar_atomic_kind = ATOMIC_TYPE_USHORT;
 665                 break;
 666         case OS_SUPPORT_LINUX:
 667                 set_be_option("ia32-gasmode=elf");
 668                 break;
 669         case OS_SUPPORT_MACHO:
 670                 set_be_option("ia32-gasmode=macho");
 671                 set_be_option("ia32-stackalign=4");
 672                 set_be_option("pic");
 673                 break;
 674         }
 675 }
 676
 677 int main(int argc, char **argv)
 678 {
 679         initialize_firm();
 680
 681         const char        *dumpfunction         = NULL;
 682         const char        *print_file_name_file = NULL;
 683         compile_mode_t     mode                 = CompileAssembleLink;
 684         int                opt_level            = 1;
 685         int                result               = EXIT_SUCCESS;
 686         char               cpu_arch[16]         = "ia32";
 687         file_list_entry_t *files                = NULL;
 688         file_list_entry_t *last_file            = NULL;
 689         bool               construct_dep_target = false;
 690         bool               do_timing            = false;
 691         struct obstack     file_obst;
 692
 693         atexit(free_temp_files);
 694
 695         /* hack for now... */
 696         if (strstr(argv[0], "pptest") != NULL) {
 697                 extern int pptest_main(int argc, char **argv);
 698                 return pptest_main(argc, argv);
 699         }
 700
 701         obstack_init(&cppflags_obst);
 702         obstack_init(&ldflags_obst);
 703         obstack_init(&file_obst);
 704
 705 #define GET_ARG_AFTER(def, args)                                             \
 706         def = &arg[sizeof(args)-1];                                              \
 707         if (def[0] == '\0') {                                                     \
 708                 ++i;                                                                 \
 709                 if (i >= argc) {                                                      \
 710                         fprintf(stderr, "error: expected argument after '" args "'\n");  \
 711                         argument_errors = true;                                          \
 712                         break;                                                           \
 713                 }                                                                    \
 714                 def = argv[i];                                                       \
 715                 if (def[0] == '-' && def[1] != '\0') {                                \
 716                         fprintf(stderr, "error: expected argument after '" args "'\n");  \
 717                         argument_errors = true;                                          \
 718                         continue;                                                        \
 719                 }                                                                    \
 720         }
 721
 722 #define SINGLE_OPTION(ch) (option[0] == (ch) && option[1] == '\0')
 723
 724         /* early options parsing (find out optimisation level and OS) */
 725         for (int i = 1; i < argc; ++i) {
 726                 const char *arg = argv[i];
 727                 if (arg[0] != '-')
 728                         continue;
 729
 730                 const char *option = &arg[1];
 731                 if (option[0] == 'O') {
 732                         sscanf(&option[1], "%d", &opt_level);
 733                 }
 734                 if (strcmp(arg, "-fwin32") == 0) {
 735                         firm_opt.os_support = OS_SUPPORT_MINGW;
 736                 } else if (strcmp(arg, "-fmac") == 0) {
 737                         firm_opt.os_support = OS_SUPPORT_MACHO;
 738                 } else if (strcmp(arg, "-flinux") == 0) {
 739                         firm_opt.os_support = OS_SUPPORT_LINUX;
 740                 }
 741         }
 742
 743         /* set target/os specific stuff */
 744         init_os_support();
 745
 746         /* apply optimisation level */
 747         switch(opt_level) {
 748         case 0:
 749                 set_option("no-opt");
 750                 break;
 751         case 1:
 752                 set_option("no-inline");
 753                 break;
 754         default:
 755         case 4:
 756                 /* use_builtins = true; */
 757                 /* fallthrough */
 758         case 3:
 759                 set_option("thread-jumps");
 760                 set_option("if-conversion");
 761                 /* fallthrough */
 762         case 2:
 763                 set_option("strict-aliasing");
 764                 set_option("inline");
 765                 set_option("deconv");
 766                 set_be_option("omitfp");
 767                 break;
 768         }
 769
 770         /* parse rest of options */
 771         standard                        = STANDARD_DEFAULT;
 772         unsigned        features_on     = 0;
 773         unsigned        features_off    = 0;
 774         filetype_t      forced_filetype = FILETYPE_AUTODETECT;
 775         bool            help_displayed  = false;
 776         bool            argument_errors = false;
 777         for (int i = 1; i < argc; ++i) {
 778                 const char *arg = argv[i];
 779                 if (arg[0] == '-' && arg[1] != '\0') {
 780                         /* an option */
 781                         const char *option = &arg[1];
 782                         if (option[0] == 'o') {
 783                                 GET_ARG_AFTER(outname, "-o");
 784                         } else if (option[0] == 'g') {
 785                                 set_be_option("debuginfo=stabs");
 786                                 set_be_option("omitfp=no");
 787                                 set_be_option("ia32-nooptcc=yes");
 788                         } else if (SINGLE_OPTION('c')) {
 789                                 mode = CompileAssemble;
 790                         } else if (SINGLE_OPTION('E')) {
 791                                 mode = PreprocessOnly;
 792                         } else if (SINGLE_OPTION('S')) {
 793                                 mode = Compile;
 794                         } else if (option[0] == 'O') {
 795                                 continue;
 796                         } else if (option[0] == 'I') {
 797                                 const char *opt;
 798                                 GET_ARG_AFTER(opt, "-I");
 799                                 add_flag(&cppflags_obst, "-I%s", opt);
 800                         } else if (option[0] == 'D') {
 801                                 const char *opt;
 802                                 GET_ARG_AFTER(opt, "-D");
 803                                 add_flag(&cppflags_obst, "-D%s", opt);
 804                         } else if (option[0] == 'U') {
 805                                 const char *opt;
 806                                 GET_ARG_AFTER(opt, "-U");
 807                                 add_flag(&cppflags_obst, "-U%s", opt);
 808                         } else if (option[0] == 'l') {
 809                                 const char *opt;
 810                                 GET_ARG_AFTER(opt, "-l");
 811                                 add_flag(&ldflags_obst, "-l%s", opt);
 812                         } else if (option[0] == 'L') {
 813                                 const char *opt;
 814                                 GET_ARG_AFTER(opt, "-L");
 815                                 add_flag(&ldflags_obst, "-L%s", opt);
 816                         } else if (SINGLE_OPTION('v')) {
 817                                 verbose = 1;
 818                         } else if (SINGLE_OPTION('w')) {
 819                                 memset(&warning, 0, sizeof(warning));
 820                         } else if (option[0] == 'x') {
 821                                 const char *opt;
 822                                 GET_ARG_AFTER(opt, "-x");
 823                                 forced_filetype = get_filetype_from_string(opt);
 824                                 if (forced_filetype == FILETYPE_UNKNOWN) {
 825                                         fprintf(stderr, "Unknown language '%s'\n", opt);
 826                                         argument_errors = true;
 827                                 }
 828                         } else if (streq(option, "M")) {
 829                                 mode = PreprocessOnly;
 830                                 add_flag(&cppflags_obst, "-M");
 831                         } else if (streq(option, "MMD") ||
 832                                    streq(option, "MD")) {
 833                             construct_dep_target = true;
 834                                 add_flag(&cppflags_obst, "-%s", option);
 835                         } else if (streq(option, "MM")  ||
 836                                    streq(option, "MP")) {
 837                                 add_flag(&cppflags_obst, "-%s", option);
 838                         } else if (streq(option, "MT") ||
 839                                    streq(option, "MQ") ||
 840                                    streq(option, "MF")) {
 841                                 const char *opt;
 842                                 GET_ARG_AFTER(opt, "-MT");
 843                                 add_flag(&cppflags_obst, "-%s", option);
 844                                 add_flag(&cppflags_obst, "%s", opt);
 845                         } else if (streq(option, "include")) {
 846                                 const char *opt;
 847                                 GET_ARG_AFTER(opt, "-include");
 848                                 add_flag(&cppflags_obst, "-include");
 849                                 add_flag(&cppflags_obst, "%s", opt);
 850                         } else if (streq(option, "isystem")) {
 851                                 const char *opt;
 852                                 GET_ARG_AFTER(opt, "-isystem");
 853                                 add_flag(&cppflags_obst, "-isystem");
 854                                 add_flag(&cppflags_obst, "%s", opt);
 855                         } else if (streq(option, "nostdinc")
 856                                         || streq(option, "trigraphs")) {
 857                                 /* pass these through to the preprocessor */
 858                                 add_flag(&cppflags_obst, "%s", arg);
 859                         } else if (streq(option, "pipe")) {
 860                                 /* here for gcc compatibility */
 861                         } else if (option[0] == 'f') {
 862                                 char const *orig_opt;
 863                                 GET_ARG_AFTER(orig_opt, "-f");
 864
 865                                 if (strstart(orig_opt, "align-loops=") ||
 866                                     strstart(orig_opt, "align-jumps=") ||
 867                                     strstart(orig_opt, "align-functions=")) {
 868                                         fprintf(stderr, "ignoring gcc option '-f%s'\n", orig_opt);
 869                                 } else if (strstart(orig_opt, "input-charset=")) {
 870                                         char const* const encoding = strchr(orig_opt, '=') + 1;
 871                                         select_input_encoding(encoding);
 872                                 } else if (streq(orig_opt, "verbose-asm")) {
 873                                         /* ignore: we always print verbose assembler */
 874                                 } else {
 875                                         char const *opt         = orig_opt;
 876                                         bool        truth_value = true;
 877                                         if (opt[0] == 'n' && opt[1] == 'o' && opt[2] == '-') {
 878                                                 truth_value = false;
 879                                                 opt += 3;
 880                                         }
 881
 882                                         if (streq(opt, "builtins")) {
 883                                                 use_builtins = truth_value;
 884                                         } else if (streq(opt, "dollars-in-identifiers")) {
 885                                                 allow_dollar_in_symbol = truth_value;
 886                                         } else if (streq(opt, "omit-frame-pointer")) {
 887                                                 set_be_option(truth_value ? "omitfp" : "omitfp=no");
 888                                         } else if (streq(opt, "short-wchar")) {
 889                                                 wchar_atomic_kind = truth_value ? ATOMIC_TYPE_USHORT
 890                                                         : ATOMIC_TYPE_INT;
 891                                         } else if (streq(opt, "signed-char")) {
 892                                                 char_is_signed = truth_value;
 893                                         } else if (streq(opt, "strength-reduce")) {
 894                                                 firm_option(truth_value ? "strength-red" : "no-strength-red");
 895                                         } else if (streq(opt, "syntax-only")) {
 896                                                 mode = truth_value ? ParseOnly : CompileAssembleLink;
 897                                         } else if (streq(opt, "unsigned-char")) {
 898                                                 char_is_signed = !truth_value;
 899                                         } else if (streq(opt, "fast-math")               ||
 900                                                    streq(opt, "jump-tables")             ||
 901                                                    streq(opt, "expensive-optimizations") ||
 902                                                    streq(opt, "common")                  ||
 903                                                    streq(opt, "PIC")                     ||
 904                                                    streq(opt, "align-loops")             ||
 905                                                    streq(opt, "align-jumps")             ||
 906                                                    streq(opt, "align-functions")) {
 907                                                 fprintf(stderr, "ignoring gcc option '-f%s'\n", orig_opt);
 908                                         } else {
 909                                                 int res = firm_option(orig_opt);
 910                                                 if (res == 0) {
 911                                                         fprintf(stderr, "error: unknown Firm option '-f%s'\n",
 912                                                                 orig_opt);
 913                                                         argument_errors = true;
 914                                                         continue;
 915                                                 } else if (res == -1) {
 916                                                         help_displayed = true;
 917                                                 }
 918                                         }
 919                                 }
 920                         } else if (option[0] == 'b') {
 921                                 const char *opt;
 922                                 GET_ARG_AFTER(opt, "-b");
 923                                 int res = firm_be_option(opt);
 924                                 if (res == 0) {
 925                                         fprintf(stderr, "error: unknown Firm backend option '-b %s'\n",
 926                                                 opt);
 927                                         argument_errors = true;
 928                                 } else if (res == -1) {
 929                                         help_displayed = true;
 930                                 } else if (strstart(opt, "isa=")) {
 931                                         strncpy(cpu_arch, opt, sizeof(cpu_arch));
 932                                 }
 933                         } else if (option[0] == 'W') {
 934                                 if (strstart(option + 1, "p,")) {
 935                                         // pass options directly to the preprocessor
 936                                         const char *opt;
 937                                         GET_ARG_AFTER(opt, "-Wp,");
 938                                         add_flag(&cppflags_obst, "-Wp,%s", opt);
 939                                 } else if (strstart(option + 1, "l,")) {
 940                                         // pass options directly to the linker
 941                                         const char *opt;
 942                                         GET_ARG_AFTER(opt, "-Wl,");
 943                                         add_flag(&ldflags_obst, "-Wl,%s", opt);
 944                                 } else if (streq(option + 1, "no-trigraphs")
 945                                                         || streq(option + 1, "undef")) {
 946                                         add_flag(&cppflags_obst, "%s", arg);
 947                                 } else {
 948                                         set_warning_opt(&option[1]);
 949                                 }
 950                         } else if (option[0] == 'm') {
 951                                 /* -m options */
 952                                 const char *opt;
 953                                 char arch_opt[64];
 954
 955                                 GET_ARG_AFTER(opt, "-m");
 956                                 if (strstart(opt, "arch=")) {
 957                                         GET_ARG_AFTER(opt, "-march=");
 958                                         snprintf(arch_opt, sizeof(arch_opt), "%s-arch=%s", cpu_arch, opt);
 959                                         int res = firm_be_option(arch_opt);
 960                                         if (res == 0) {
 961                                                 fprintf(stderr, "Unknown architecture '%s'\n", arch_opt);
 962                                                 argument_errors = true;
 963                                         } else {
 964                                                 snprintf(arch_opt, sizeof(arch_opt), "%s-opt=%s", cpu_arch, opt);
 965                                                 int res = firm_be_option(arch_opt);
 966                                                 if (res == 0)
 967                                                         argument_errors = true;
 968                                         }
 969                                 } else if (strstart(opt, "tune=")) {
 970                                         GET_ARG_AFTER(opt, "-mtune=");
 971                                         snprintf(arch_opt, sizeof(arch_opt), "%s-opt=%s", cpu_arch, opt);
 972                                         int res = firm_be_option(arch_opt);
 973                                         if (res == 0)
 974                                                 argument_errors = true;
 975                                 } else if (strstart(opt, "cpu=")) {
 976                                         GET_ARG_AFTER(opt, "-mcpu=");
 977                                         snprintf(arch_opt, sizeof(arch_opt), "%s-arch=%s", cpu_arch, opt);
 978                                         int res = firm_be_option(arch_opt);
 979                                         if (res == 0)
 980                                                 argument_errors = true;
 981                                 } else if (strstart(opt, "fpmath=")) {
 982                                         GET_ARG_AFTER(opt, "-mfpmath=");
 983                                         if (streq(opt, "387"))
 984                                                 opt = "x87";
 985                                         else if (streq(opt, "sse"))
 986                                                 opt = "sse2";
 987                                         else {
 988                                                 fprintf(stderr, "error: option -mfpumath supports only 387 or sse\n");
 989                                                 argument_errors = true;
 990                                         }
 991                                         if (!argument_errors) {
 992                                                 snprintf(arch_opt, sizeof(arch_opt), "%s-fpunit=%s", cpu_arch, opt);
 993                                                 int res = firm_be_option(arch_opt);
 994                                                 if (res == 0)
 995                                                         argument_errors = true;
 996                                         }
 997                                 } else if (strstart(opt, "preferred-stack-boundary=")) {
 998                                         GET_ARG_AFTER(opt, "-mpreferred-stack-boundary=");
 999                                         snprintf(arch_opt, sizeof(arch_opt), "%s-stackalign=%s", cpu_arch, opt);
1000                                         int res = firm_be_option(arch_opt);
1001                                         if (res == 0)
1002                                                 argument_errors = true;
1003                                 } else if (streq(opt, "omit-leaf-frame-pointer")) {
1004                                         set_be_option("omitleaffp=1");
1005                                 } else if (streq(opt, "no-omit-leaf-frame-pointer")) {
1006                                         set_be_option("omitleaffp=0");
1007                                 } else if (streq(opt, "rtd")) {
1008                                         default_calling_convention = CC_STDCALL;
1009                                 } else {
1010                                         char *endptr;
1011                                         long int value = strtol(opt, &endptr, 10);
1012                                         if (*endptr != '\0') {
1013                                                 fprintf(stderr, "error: wrong option '-m %s'\n",  opt);
1014                                                 argument_errors = true;
1015                                         }
1016                                         if (value != 16 && value != 32 && value != 64) {
1017                                                 fprintf(stderr, "error: option -m supports only 16, 32 or 64\n");
1018                                                 argument_errors = true;
1019                                         } else {
1020                                                 machine_size = (unsigned int)value;
1021                                         }
1022                                 }
1023                         } else if (streq(option, "pg")) {
1024                                 set_be_option("gprof");
1025                                 add_flag(&ldflags_obst, "-pg");
1026                         } else if (streq(option, "pedantic") ||
1027                                    streq(option, "ansi")) {
1028                                 fprintf(stderr, "warning: ignoring gcc option '%s'\n", arg);
1029                         } else if (streq(option, "shared")) {
1030                                 add_flag(&ldflags_obst, "-shared");
1031                         } else if (strstart(option, "std=")) {
1032                                 const char *const o = &option[4];
1033                                 standard =
1034                                         streq(o, "c++")            ? STANDARD_CXX98   :
1035                                         streq(o, "c++98")          ? STANDARD_CXX98   :
1036                                         streq(o, "c89")            ? STANDARD_C89     :
1037                                         streq(o, "c99")            ? STANDARD_C99     :
1038                                         streq(o, "c9x")            ? STANDARD_C99     : // deprecated
1039                                         streq(o, "gnu++98")        ? STANDARD_GNUXX98 :
1040                                         streq(o, "gnu89")          ? STANDARD_GNU89   :
1041                                         streq(o, "gnu99")          ? STANDARD_GNU99   :
1042                                         streq(o, "gnu9x")          ? STANDARD_GNU99   : // deprecated
1043                                         streq(o, "iso9899:1990")   ? STANDARD_C89     :
1044                                         streq(o, "iso9899:199409") ? STANDARD_C90     :
1045                                         streq(o, "iso9899:1999")   ? STANDARD_C99     :
1046                                         streq(o, "iso9899:199x")   ? STANDARD_C99     : // deprecated
1047                                         (fprintf(stderr, "warning: ignoring gcc option '%s'\n", arg), standard);
1048                         } else if (streq(option, "version")) {
1049                                 print_cparser_version();
1050                         } else if (strstart(option, "print-file-name=")) {
1051                                 GET_ARG_AFTER(print_file_name_file, "-print-file-name=");
1052                         } else if (option[0] == '-') {
1053                                 /* double dash option */
1054                                 ++option;
1055                                 if (streq(option, "gcc")) {
1056                                         features_on  |=  _GNUC;
1057                                         features_off &= ~_GNUC;
1058                                 } else if (streq(option, "no-gcc")) {
1059                                         features_on  &= ~_GNUC;
1060                                         features_off |=  _GNUC;
1061                                 } else if (streq(option, "ms")) {
1062                                         features_on  |=  _MS;
1063                                         features_off &= ~_MS;
1064                                 } else if (streq(option, "no-ms")) {
1065                                         features_on  &= ~_MS;
1066                                         features_off |=  _MS;
1067                                 } else if (streq(option, "strict")) {
1068                                         strict_mode = true;
1069                                 } else if (streq(option, "lextest")) {
1070                                         mode = LexTest;
1071                                 } else if (streq(option, "benchmark")) {
1072                                         mode = BenchmarkParser;
1073                                 } else if (streq(option, "print-ast")) {
1074                                         mode = PrintAst;
1075                                 } else if (streq(option, "print-implicit-cast")) {
1076                                         print_implicit_casts = true;
1077                                 } else if (streq(option, "print-parenthesis")) {
1078                                         print_parenthesis = true;
1079                                 } else if (streq(option, "print-fluffy")) {
1080                                         mode = PrintFluffy;
1081                                 } else if (streq(option, "print-caml")) {
1082                                         mode = PrintCaml;
1083                                 } else if (streq(option, "print-jna")) {
1084                                         mode = PrintJna;
1085                                 } else if (streq(option, "time")) {
1086                                         do_timing = true;
1087                                 } else if (streq(option, "version")) {
1088                                         print_cparser_version();
1089                                         exit(EXIT_SUCCESS);
1090                                 } else if (streq(option, "dump-function")) {
1091                                         ++i;
1092                                         if (i >= argc) {
1093                                                 fprintf(stderr, "error: "
1094                                                         "expected argument after '--dump-function'\n");
1095                                                 argument_errors = true;
1096                                                 break;
1097                                         }
1098                                         dumpfunction = argv[i];
1099                                         mode         = CompileDump;
1100                                 } else if (streq(option, "export-ir")) {
1101                                         mode = CompileExportIR;
1102                                 } else {
1103                                         fprintf(stderr, "error: unknown argument '%s'\n", arg);
1104                                         argument_errors = true;
1105                                 }
1106                         } else {
1107                                 fprintf(stderr, "error: unknown argument '%s'\n", arg);
1108                                 argument_errors = true;
1109                         }
1110                 } else {
1111                         filetype_t type = forced_filetype;
1112                         if (type == FILETYPE_AUTODETECT) {
1113                                 if (streq(arg, "-")) {
1114                                         /* - implicitly means C source file */
1115                                         type = FILETYPE_C;
1116                                 } else {
1117                                         const char *suffix = strrchr(arg, '.');
1118                                         /* Ensure there is at least one char before the suffix */
1119                                         if (suffix != NULL && suffix != arg) {
1120                                                 ++suffix;
1121                                                 type =
1122                                                         streq(suffix, "S")   ? FILETYPE_ASSEMBLER              :
1123                                                         streq(suffix, "a")   ? FILETYPE_OBJECT                 :
1124                                                         streq(suffix, "c")   ? FILETYPE_C                      :
1125                                                         streq(suffix, "cc")  ? FILETYPE_CXX                    :
1126                                                         streq(suffix, "cpp") ? FILETYPE_CXX                    :
1127                                                         streq(suffix, "cxx") ? FILETYPE_CXX                    :
1128                                                         streq(suffix, "h")   ? FILETYPE_C                      :
1129                                                         streq(suffix, "ir")  ? FILETYPE_IR                     :
1130                                                         streq(suffix, "o")   ? FILETYPE_OBJECT                 :
1131                                                         streq(suffix, "s")   ? FILETYPE_PREPROCESSED_ASSEMBLER :
1132                                                         streq(suffix, "so")  ? FILETYPE_OBJECT                 :
1133                                                         FILETYPE_AUTODETECT;
1134                                         }
1135                                 }
1136
1137                                 if (type == FILETYPE_AUTODETECT) {
1138                                         fprintf(stderr, "'%s': file format not recognized\n", arg);
1139                                         continue;
1140                                 }
1141                         }
1142
1143                         file_list_entry_t *entry
1144                                 = obstack_alloc(&file_obst, sizeof(entry[0]));
1145                         memset(entry, 0, sizeof(entry[0]));
1146                         entry->name = arg;
1147                         entry->type = type;
1148
1149                         if (last_file != NULL) {
1150                                 last_file->next = entry;
1151                         } else {
1152                                 files = entry;
1153                         }
1154                         last_file = entry;
1155                 }
1156         }
1157
1158         if (print_file_name_file != NULL) {
1159                 print_file_name(print_file_name_file);
1160                 return 0;
1161         }
1162
1163         if (files == NULL) {
1164                 fprintf(stderr, "error: no input files specified\n");
1165                 argument_errors = true;
1166         }
1167
1168         if (help_displayed) {
1169                 return !argument_errors;
1170         }
1171         if (argument_errors) {
1172                 usage(argv[0]);
1173                 return 1;
1174         }
1175
1176         /* we do the lowering in ast2firm */
1177         firm_opt.lower_bitfields = FALSE;
1178
1179         /* set the c_mode here, types depends on it */
1180         c_mode |= features_on;
1181         c_mode &= ~features_off;
1182
1183         gen_firm_init();
1184         init_symbol_table();
1185         init_types();
1186         init_typehash();
1187         init_basic_types();
1188         init_lexer();
1189         init_ast();
1190         init_parser();
1191         init_ast2firm();
1192         init_mangle();
1193
1194         if (do_timing)
1195                 timer_init();
1196
1197         if (construct_dep_target) {
1198                 if (outname != 0 && strlen(outname) >= 2) {
1199                         get_output_name(dep_target, sizeof(dep_target), outname, ".d");
1200                 } else {
1201                         get_output_name(dep_target, sizeof(dep_target), files->name, ".d");
1202                 }
1203         } else {
1204                 dep_target[0] = '\0';
1205         }
1206
1207         char outnamebuf[4096];
1208         if (outname == NULL) {
1209                 const char *filename = files->name;
1210
1211                 switch(mode) {
1212                 case BenchmarkParser:
1213                 case PrintAst:
1214                 case PrintFluffy:
1215                 case PrintCaml:
1216                 case PrintJna:
1217                 case LexTest:
1218                 case PreprocessOnly:
1219                 case ParseOnly:
1220                         outname = "-";
1221                         break;
1222                 case Compile:
1223                         get_output_name(outnamebuf, sizeof(outnamebuf), filename, ".s");
1224                         outname = outnamebuf;
1225                         break;
1226                 case CompileAssemble:
1227                         get_output_name(outnamebuf, sizeof(outnamebuf), filename, ".o");
1228                         outname = outnamebuf;
1229                         break;
1230                 case CompileDump:
1231                         get_output_name(outnamebuf, sizeof(outnamebuf), dumpfunction,
1232                                         ".vcg");
1233                         outname = outnamebuf;
1234                         break;
1235                 case CompileExportIR:
1236                         get_output_name(outnamebuf, sizeof(outnamebuf), filename, ".ir");
1237                         outname = outnamebuf;
1238                         break;
1239                 case CompileAssembleLink:
1240 #ifdef _WIN32
1241                         outname = "a.exe";
1242 #else
1243                         outname = "a.out";
1244 #endif
1245                         break;
1246                 }
1247         }
1248
1249         assert(outname != NULL);
1250
1251         FILE *out;
1252         if (streq(outname, "-")) {
1253                 out = stdout;
1254         } else {
1255                 out = fopen(outname, "w");
1256                 if (out == NULL) {
1257                         fprintf(stderr, "Couldn't open '%s' for writing: %s\n", outname,
1258                                         strerror(errno));
1259                         return 1;
1260                 }
1261         }
1262
1263         file_list_entry_t *file;
1264         for (file = files; file != NULL; file = file->next) {
1265                 char        asm_tempfile[1024];
1266                 const char *filename = file->name;
1267                 filetype_t  filetype = file->type;
1268
1269                 if (filetype == FILETYPE_OBJECT)
1270                         continue;
1271
1272                 FILE *in = NULL;
1273                 if (mode == LexTest) {
1274                         if (in == NULL)
1275                                 in = open_file(filename);
1276                         lextest(in, filename);
1277                         fclose(in);
1278                         exit(EXIT_SUCCESS);
1279                 }
1280
1281                 FILE *preprocessed_in = NULL;
1282                 filetype_t next_filetype = filetype;
1283                 switch (filetype) {
1284                         case FILETYPE_C:
1285                                 next_filetype = FILETYPE_PREPROCESSED_C;
1286                                 goto preprocess;
1287                         case FILETYPE_CXX:
1288                                 next_filetype = FILETYPE_PREPROCESSED_CXX;
1289                                 goto preprocess;
1290                         case FILETYPE_ASSEMBLER:
1291                                 next_filetype = FILETYPE_PREPROCESSED_ASSEMBLER;
1292                                 goto preprocess;
1293 preprocess:
1294                                 /* no support for input on FILE* yet */
1295                                 if (in != NULL)
1296                                         panic("internal compiler error: in for preprocessor != NULL");
1297
1298                                 preprocessed_in = preprocess(filename, filetype);
1299                                 if (mode == PreprocessOnly) {
1300                                         copy_file(out, preprocessed_in);
1301                                         int result = pclose(preprocessed_in);
1302                                         fclose(out);
1303                                         /* remove output file in case of error */
1304                                         if (out != stdout && result != EXIT_SUCCESS) {
1305                                                 unlink(outname);
1306                                         }
1307                                         return result;
1308                                 }
1309
1310                                 in = preprocessed_in;
1311                                 filetype = next_filetype;
1312                                 break;
1313
1314                         default:
1315                                 break;
1316                 }
1317
1318                 FILE *asm_out;
1319                 if (mode == Compile) {
1320                         asm_out = out;
1321                 } else {
1322                         asm_out = make_temp_file(asm_tempfile, sizeof(asm_tempfile), "ccs");
1323                 }
1324
1325                 if (in == NULL)
1326                         in = open_file(filename);
1327
1328                 /* preprocess and compile */
1329                 if (filetype == FILETYPE_PREPROCESSED_C) {
1330                         char const* invalid_mode;
1331                         switch (standard) {
1332                                 case STANDARD_ANSI:
1333                                 case STANDARD_C89:   c_mode = _C89;                break;
1334                                 /* TODO determine difference between these two */
1335                                 case STANDARD_C90:   c_mode = _C89;                break;
1336                                 case STANDARD_C99:   c_mode = _C89 | _C99;         break;
1337                                 case STANDARD_GNU89: c_mode = _C89 |        _GNUC; break;
1338
1339 default_c_warn:
1340                                         fprintf(stderr,
1341                                                         "warning: command line option \"-std=%s\" is not valid for C\n",
1342                                                         invalid_mode);
1343                                         /* FALLTHROUGH */
1344                                 case STANDARD_DEFAULT:
1345                                 case STANDARD_GNU99:   c_mode = _C89 | _C99 | _GNUC; break;
1346
1347                                 case STANDARD_CXX98:   invalid_mode = "c++98"; goto default_c_warn;
1348                                 case STANDARD_GNUXX98: invalid_mode = "gnu98"; goto default_c_warn;
1349                         }
1350                         goto do_parsing;
1351                 } else if (filetype == FILETYPE_PREPROCESSED_CXX) {
1352                         char const* invalid_mode;
1353                         switch (standard) {
1354                                 case STANDARD_C89:   invalid_mode = "c89";   goto default_cxx_warn;
1355                                 case STANDARD_C90:   invalid_mode = "c90";   goto default_cxx_warn;
1356                                 case STANDARD_C99:   invalid_mode = "c99";   goto default_cxx_warn;
1357                                 case STANDARD_GNU89: invalid_mode = "gnu89"; goto default_cxx_warn;
1358                                 case STANDARD_GNU99: invalid_mode = "gnu99"; goto default_cxx_warn;
1359
1360                                 case STANDARD_ANSI:
1361                                 case STANDARD_CXX98: c_mode = _CXX; break;
1362
1363 default_cxx_warn:
1364                                         fprintf(stderr,
1365                                                         "warning: command line option \"-std=%s\" is not valid for C++\n",
1366                                                         invalid_mode);
1367                                 case STANDARD_DEFAULT:
1368                                 case STANDARD_GNUXX98: c_mode = _CXX | _GNUC; break;
1369                         }
1370
1371 do_parsing:
1372                         c_mode |= features_on;
1373                         c_mode &= ~features_off;
1374
1375                         /* do the actual parsing */
1376                         ir_timer_t *t_parsing = ir_timer_new();
1377                         timer_register(t_parsing, "Frontend: Parsing");
1378                         timer_push(t_parsing);
1379                         init_tokens();
1380                         translation_unit_t *const unit = do_parsing(in, filename);
1381                         timer_pop(t_parsing);
1382
1383                         /* prints the AST even if errors occurred */
1384                         if (mode == PrintAst) {
1385                                 print_to_file(out);
1386                                 print_ast(unit);
1387                         }
1388
1389                         if (error_count > 0) {
1390                                 /* parsing failed because of errors */
1391                                 fprintf(stderr, "%u error(s), %u warning(s)\n", error_count,
1392                                         warning_count);
1393                                 result = EXIT_FAILURE;
1394                                 continue;
1395                         } else if (warning_count > 0) {
1396                                 fprintf(stderr, "%u warning(s)\n", warning_count);
1397                         }
1398
1399                         if (in == preprocessed_in) {
1400                                 int pp_result = pclose(preprocessed_in);
1401                                 if (pp_result != EXIT_SUCCESS) {
1402                                         /* remove output file */
1403                                         if (out != stdout)
1404                                                 unlink(outname);
1405                                         exit(EXIT_FAILURE);
1406                                 }
1407                         }
1408
1409                         if (mode == BenchmarkParser) {
1410                                 return result;
1411                         } else if (mode == PrintFluffy) {
1412                                 write_fluffy_decls(out, unit);
1413                                 continue;
1414                         } else if (mode == PrintCaml) {
1415                                 write_caml_decls(out, unit);
1416                                 continue;
1417                         } else if (mode == PrintJna) {
1418                                 write_jna_decls(out, unit);
1419                                 continue;
1420                         }
1421
1422                         /* build the firm graph */
1423                         ir_timer_t *t_construct = ir_timer_new();
1424                         timer_register(t_construct, "Frontend: Graph construction");
1425                         timer_push(t_construct);
1426                         translation_unit_to_firm(unit);
1427                         timer_pop(t_construct);
1428
1429 graph_built:
1430                         if (mode == ParseOnly) {
1431                                 continue;
1432                         }
1433
1434                         if (mode == CompileDump) {
1435                                 /* find irg */
1436                                 ident    *id     = new_id_from_str(dumpfunction);
1437                                 ir_graph *irg    = NULL;
1438                                 int       n_irgs = get_irp_n_irgs();
1439                                 for (int i = 0; i < n_irgs; ++i) {
1440                                         ir_graph *tirg   = get_irp_irg(i);
1441                                         ident    *irg_id = get_entity_ident(get_irg_entity(tirg));
1442                                         if (irg_id == id) {
1443                                                 irg = tirg;
1444                                                 break;
1445                                         }
1446                                 }
1447
1448                                 if (irg == NULL) {
1449                                         fprintf(stderr, "No graph for function '%s' found\n",
1450                                                 dumpfunction);
1451                                         exit(1);
1452                                 }
1453
1454                                 dump_ir_block_graph_file(irg, out);
1455                                 fclose(out);
1456                                 exit(0);
1457                         }
1458
1459                         if (mode == CompileExportIR) {
1460                                 fclose(out);
1461                                 ir_export(outname);
1462                                 exit(0);
1463                         }
1464
1465                         gen_firm_finish(asm_out, filename, /*c_mode=*/1,
1466                                         have_const_functions);
1467                         if (asm_out != out) {
1468                                 fclose(asm_out);
1469                         }
1470                 } else if (filetype == FILETYPE_IR) {
1471                         fclose(in);
1472                         ir_import(filename);
1473                         goto graph_built;
1474                 } else if (filetype == FILETYPE_PREPROCESSED_ASSEMBLER) {
1475                         copy_file(asm_out, in);
1476                         if (in == preprocessed_in) {
1477                                 int pp_result = pclose(preprocessed_in);
1478                                 if (pp_result != EXIT_SUCCESS) {
1479                                         /* remove output in error case */
1480                                         if (out != stdout)
1481                                                 unlink(outname);
1482                                         return pp_result;
1483                                 }
1484                         }
1485                         if (asm_out != out) {
1486                                 fclose(asm_out);
1487                         }
1488                 }
1489
1490                 if (mode == Compile)
1491                         continue;
1492
1493                 /* if we're here then we have preprocessed assembly */
1494                 filename = asm_tempfile;
1495                 filetype = FILETYPE_PREPROCESSED_ASSEMBLER;
1496
1497                 /* assemble */
1498                 if (filetype == FILETYPE_PREPROCESSED_ASSEMBLER) {
1499                         char        temp[1024];
1500                         const char *filename_o;
1501                         if (mode == CompileAssemble) {
1502                                 fclose(out);
1503                                 filename_o = outname;
1504                         } else {
1505                                 FILE *tempf = make_temp_file(temp, sizeof(temp), "cco");
1506                                 fclose(tempf);
1507                                 filename_o = temp;
1508                         }
1509
1510                         assemble(filename_o, filename);
1511
1512                         size_t len = strlen(filename_o) + 1;
1513                         filename = obstack_copy(&file_obst, filename_o, len);
1514                         filetype = FILETYPE_OBJECT;
1515                 }
1516
1517                 /* ok we're done here, process next file */
1518                 file->name = filename;
1519                 file->type = filetype;
1520         }
1521
1522         if (result != EXIT_SUCCESS) {
1523                 if (out != stdout)
1524                         unlink(outname);
1525                 return result;
1526         }
1527
1528         /* link program file */
1529         if (mode == CompileAssembleLink) {
1530                 obstack_1grow(&ldflags_obst, '\0');
1531                 const char *flags = obstack_finish(&ldflags_obst);
1532
1533                 /* construct commandline */
1534                 const char *linker = getenv("CPARSER_LINK");
1535                 if (linker == NULL)
1536                         linker = LINKER;
1537                 obstack_printf(&file_obst, "%s", linker);
1538                 for (file_list_entry_t *entry = files; entry != NULL;
1539                                 entry = entry->next) {
1540                         if (entry->type != FILETYPE_OBJECT)
1541                                 continue;
1542
1543                         add_flag(&file_obst, "%s", entry->name);
1544                 }
1545
1546                 add_flag(&file_obst, "-o");
1547                 add_flag(&file_obst, outname);
1548                 obstack_printf(&file_obst, "%s", flags);
1549                 obstack_1grow(&file_obst, '\0');
1550
1551                 char *commandline = obstack_finish(&file_obst);
1552
1553                 if (verbose) {
1554                         puts(commandline);
1555                 }
1556                 int err = system(commandline);
1557                 if (err != EXIT_SUCCESS) {
1558                         fprintf(stderr, "linker reported an error\n");
1559                         exit(1);
1560                 }
1561         }
1562
1563         if (do_timing)
1564                 timer_term(stderr);
1565
1566         obstack_free(&cppflags_obst, NULL);
1567         obstack_free(&ldflags_obst, NULL);
1568         obstack_free(&file_obst, NULL);
1569
1570         exit_mangle();
1571         exit_ast2firm();
1572         exit_parser();
1573         exit_ast();
1574         exit_lexer();
1575         exit_typehash();
1576         exit_types();
1577         exit_tokens();
1578         exit_symbol_table();
1579         return 0;
1580 }