nsz Git - cparser/blob - main.c

   1 /*
   2  * This file is part of cparser.
   3  * Copyright (C) 2007-2008 Matthias Braun <matze@braunis.de>
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License
   7  * as published by the Free Software Foundation; either version 2
   8  * of the License, or (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  18  * 02111-1307, USA.
  19  */
  20 #include <config.h>
  21
  22 #define _GNU_SOURCE
  23
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26 #include <stdbool.h>
  27 #include <errno.h>
  28 #include <string.h>
  29 #include <assert.h>
  30
  31 #ifdef _WIN32
  32
  33 #include <fcntl.h>
  34 #include <io.h>
  35
  36 /* no eXecute on Win32 */
  37 #define X_OK 0
  38 #define W_OK 2
  39 #define R_OK 4
  40
  41 #define O_RDWR          _O_RDWR
  42 #define O_CREAT         _O_CREAT
  43 #define O_EXCL          _O_EXCL
  44 #define O_BINARY        _O_BINARY
  45
  46 /* remap some names, we are not in the POSIX world */
  47 #define access(fname, mode)      _access(fname, mode)
  48 #define mktemp(tmpl)             _mktemp(tmpl)
  49 #define open(fname, oflag, mode) _open(fname, oflag, mode)
  50 #define fdopen(fd, mode)         _fdopen(fd, mode)
  51 #define popen(cmd, mode)         _popen(cmd, mode)
  52 #define pclose(file)             _pclose(file)
  53 #define unlink(filename)         _unlink(filename)
  54
  55 #else
  56 #include <unistd.h>
  57 #define HAVE_MKSTEMP
  58 #endif
  59
  60 #include <libfirm/firm.h>
  61 #include <libfirm/be.h>
  62
  63 #include "lexer.h"
  64 #include "token_t.h"
  65 #include "types.h"
  66 #include "type_hash.h"
  67 #include "parser.h"
  68 #include "type_t.h"
  69 #include "ast2firm.h"
  70 #include "diagnostic.h"
  71 #include "lang_features.h"
  72 #include "driver/firm_opt.h"
  73 #include "driver/firm_cmdline.h"
  74 #include "adt/error.h"
  75 #include "wrappergen/write_fluffy.h"
  76 #include "wrappergen/write_caml.h"
  77 #include "wrappergen/write_jna.h"
  78 #include "revision.h"
  79 #include "warning.h"
  80 #include "mangle.h"
  81
  82 #ifndef PREPROCESSOR
  83 #ifndef __WIN32__
  84 #define PREPROCESSOR "gcc -E -std=c99 -m32 -U__STRICT_ANSI__"
  85 #else
  86 #define PREPROCESSOR "cpp -std=c99 -m32 -U__STRICT_ANSI__"
  87 #endif
  88 #endif
  89
  90 #ifndef LINKER
  91 #define LINKER    "gcc -m32"
  92 #endif
  93
  94 #ifndef ASSEMBLER
  95 #ifdef __APPLE__
  96 #define ASSEMBLER "gcc -c -xassembler"
  97 #else
  98 #define ASSEMBLER "as --32"
  99 #endif
 100 #endif
 101
 102 /** The current c mode/dialect. */
 103 unsigned int c_mode = _C89 | _ANSI | _C99 | _GNUC;
 104
 105 /** The 'machine size', 16, 32 or 64 bit, 32bit is the default. */
 106 unsigned int machine_size = 32;
 107
 108 /** true if the char type is signed. */
 109 bool char_is_signed = true;
 110
 111 /** true for strict language checking. */
 112 bool strict_mode = false;
 113
 114 /** use builtins for some libc functions */
 115 bool use_builtins = false;
 116
 117 /** we have extern function with const attribute. */
 118 bool have_const_functions = false;
 119
 120 atomic_type_kind_t wchar_atomic_kind = ATOMIC_TYPE_INT;
 121
 122 /* to switch on printing of implicit casts */
 123 extern bool print_implicit_casts;
 124
 125 /* to switch on printing of parenthesis to indicate operator precedence */
 126 extern bool print_parenthesis;
 127
 128 static int             verbose;
 129 static struct obstack  cppflags_obst, ldflags_obst;
 130 static char            dep_target[1024];
 131 static const char     *outname;
 132
 133 typedef struct file_list_entry_t file_list_entry_t;
 134
 135 typedef enum filetype_t {
 136         FILETYPE_AUTODETECT,
 137         FILETYPE_C,
 138         FILETYPE_PREPROCESSED_C,
 139         FILETYPE_CXX,
 140         FILETYPE_PREPROCESSED_CXX,
 141         FILETYPE_ASSEMBLER,
 142         FILETYPE_PREPROCESSED_ASSEMBLER,
 143         FILETYPE_OBJECT,
 144         FILETYPE_UNKNOWN
 145 } filetype_t;
 146
 147 struct file_list_entry_t {
 148         const char  *name; /**< filename or NULL for stdin */
 149         filetype_t   type;
 150         file_list_entry_t *next;
 151 };
 152
 153 static file_list_entry_t *temp_files;
 154
 155 #if defined(_DEBUG) || defined(FIRM_DEBUG)
 156 /**
 157  * Debug printf implementation.
 158  *
 159  * @param fmt  printf style format parameter
 160  */
 161 void dbg_printf(const char *fmt, ...)
 162 {
 163         va_list list;
 164
 165         if (firm_dump.debug_print) {
 166                 va_start(list, fmt);
 167                 vprintf(fmt, list);
 168                 va_end(list);
 169         }  /* if */
 170 }
 171 #endif /* defined(_DEBUG) || defined(FIRM_DEBUG) */
 172
 173 static void initialize_firm(void)
 174 {
 175         firm_early_init();
 176
 177         dump_consts_local(1);
 178         dump_keepalive_edges(1);
 179 }
 180
 181 static void get_output_name(char *buf, size_t buflen, const char *inputname,
 182                             const char *newext)
 183 {
 184         size_t last_dot = 0xffffffff;
 185         size_t i = 0;
 186
 187         if (inputname == NULL) {
 188                 snprintf(buf, buflen, "a%s", newext);
 189                 return;
 190         }
 191
 192         for (const char *c = inputname; *c != 0; ++c) {
 193                 if (*c == '.')
 194                         last_dot = i;
 195                 ++i;
 196         }
 197         if (last_dot == 0xffffffff)
 198                 last_dot = i;
 199
 200         if (last_dot >= buflen)
 201                 panic("filename too long");
 202         memcpy(buf, inputname, last_dot);
 203
 204         size_t extlen = strlen(newext) + 1;
 205         if (extlen + last_dot >= buflen)
 206                 panic("filename too long");
 207         memcpy(buf+last_dot, newext, extlen);
 208 }
 209
 210 #include "builtins.h"
 211
 212 static translation_unit_t *do_parsing(FILE *const in, const char *const input_name)
 213 {
 214         start_parsing();
 215
 216         if (use_builtins) {
 217                 lexer_open_buffer(builtins, sizeof(builtins)-1, "<builtin>");
 218                 parse();
 219         }
 220
 221         lexer_open_stream(in, input_name);
 222         parse();
 223
 224         translation_unit_t *unit = finish_parsing();
 225         return unit;
 226 }
 227
 228 static void lextest(FILE *in, const char *fname)
 229 {
 230         lexer_open_stream(in, fname);
 231
 232         do {
 233                 lexer_next_preprocessing_token();
 234                 print_token(stdout, &lexer_token);
 235                 putchar('\n');
 236         } while (lexer_token.type != T_EOF);
 237 }
 238
 239 static void add_flag(struct obstack *obst, const char *format, ...)
 240 {
 241         char buf[4096];
 242         va_list ap;
 243
 244         va_start(ap, format);
 245 #ifdef _WIN32
 246         int len =
 247 #endif
 248                 vsnprintf(buf, sizeof(buf), format, ap);
 249         va_end(ap);
 250
 251         obstack_1grow(obst, ' ');
 252 #ifdef _WIN32
 253         obstack_1grow(obst, '"');
 254         obstack_grow(obst, buf, len);
 255         obstack_1grow(obst, '"');
 256 #else
 257         /* escape stuff... */
 258         for (char *c = buf; *c != '\0'; ++c) {
 259                 switch(*c) {
 260                 case ' ':
 261                 case '"':
 262                 case '$':
 263                 case '&':
 264                 case '(':
 265                 case ')':
 266                 case ';':
 267                 case '<':
 268                 case '>':
 269                 case '\'':
 270                 case '\\':
 271                 case '\n':
 272                 case '\r':
 273                 case '\t':
 274                 case '`':
 275                 case '|':
 276                         obstack_1grow(obst, '\\');
 277                         /* FALLTHROUGH */
 278                 default:
 279                         obstack_1grow(obst, *c);
 280                         break;
 281                 }
 282         }
 283 #endif
 284 }
 285
 286 static const char *type_to_string(type_t *type)
 287 {
 288         assert(type->kind == TYPE_ATOMIC);
 289         return get_atomic_kind_name(type->atomic.akind);
 290 }
 291
 292 static FILE *preprocess(const char *fname)
 293 {
 294         obstack_1grow(&cppflags_obst, '\0');
 295         const char *flags = obstack_finish(&cppflags_obst);
 296
 297         obstack_printf(&cppflags_obst, "%s", PREPROCESSOR);
 298
 299         /* setup default defines */
 300         add_flag(&cppflags_obst, "-U__WCHAR_TYPE__");
 301         add_flag(&cppflags_obst, "-D__WCHAR_TYPE__=%s", type_to_string(type_wchar_t));
 302         add_flag(&cppflags_obst, "-U__SIZE_TYPE__");
 303         add_flag(&cppflags_obst, "-D__SIZE_TYPE__=%s", type_to_string(type_size_t));
 304
 305         /* TODO hack... */
 306         add_flag(&cppflags_obst, "-D__builtin_abort=abort");
 307         add_flag(&cppflags_obst, "-D__builtin_abs=abs");
 308         add_flag(&cppflags_obst, "-D__builtin_exit=exit");
 309         add_flag(&cppflags_obst, "-D__builtin_malloc=malloc");
 310         add_flag(&cppflags_obst, "-D__builtin_memcmp=memcmp");
 311         add_flag(&cppflags_obst, "-D__builtin_memcpy=memcpy");
 312         add_flag(&cppflags_obst, "-D__builtin_memset=memset");
 313         add_flag(&cppflags_obst, "-D__builtin_strlen=strlen");
 314         add_flag(&cppflags_obst, "-D__builtin_strcmp=strcmp");
 315         add_flag(&cppflags_obst, "-D__builtin_strcpy=strcpy");
 316
 317         /* handle dependency generation */
 318         if (dep_target[0] != '\0') {
 319                 add_flag(&cppflags_obst, "-MF");
 320                 add_flag(&cppflags_obst, dep_target);
 321                 if (outname != NULL) {
 322                                 add_flag(&cppflags_obst, "-MQ");
 323                                 add_flag(&cppflags_obst, outname);
 324                 }
 325         }
 326         if (flags[0] != '\0') {
 327                 obstack_printf(&cppflags_obst, " %s", flags);
 328         }
 329         add_flag(&cppflags_obst, fname);
 330
 331         obstack_1grow(&cppflags_obst, '\0');
 332         const char *buf = obstack_finish(&cppflags_obst);
 333         if (verbose) {
 334                 puts(buf);
 335         }
 336
 337         FILE *f = popen(buf, "r");
 338         if (f == NULL) {
 339                 fprintf(stderr, "invoking preprocessor failed\n");
 340                 exit(1);
 341         }
 342
 343         return f;
 344 }
 345
 346 static void assemble(const char *out, const char *in)
 347 {
 348         char buf[4096];
 349
 350         snprintf(buf, sizeof(buf), "%s %s -o %s", ASSEMBLER, in, out);
 351         if (verbose) {
 352                 puts(buf);
 353         }
 354
 355         int err = system(buf);
 356         if (err != 0) {
 357                 fprintf(stderr, "assembler reported an error\n");
 358                 exit(1);
 359         }
 360 }
 361
 362 static void print_file_name(const char *file)
 363 {
 364         add_flag(&ldflags_obst, "-print-file-name=%s", file);
 365
 366         obstack_1grow(&ldflags_obst, '\0');
 367         const char *flags = obstack_finish(&ldflags_obst);
 368
 369         /* construct commandline */
 370         obstack_printf(&ldflags_obst, "%s ", LINKER);
 371         obstack_printf(&ldflags_obst, "%s", flags);
 372         obstack_1grow(&ldflags_obst, '\0');
 373
 374         char *commandline = obstack_finish(&ldflags_obst);
 375
 376         if (verbose) {
 377                 puts(commandline);
 378         }
 379         int err = system(commandline);
 380         if (err != EXIT_SUCCESS) {
 381                 fprintf(stderr, "linker reported an error\n");
 382                 exit(1);
 383         }
 384 }
 385
 386 static const char *try_dir(const char *dir)
 387 {
 388         if (dir == NULL)
 389                 return dir;
 390         if (access(dir, R_OK | W_OK | X_OK) == 0)
 391                 return dir;
 392         return NULL;
 393 }
 394
 395 static const char *get_tempdir(void)
 396 {
 397         static const char *tmpdir = NULL;
 398
 399         if (tmpdir != NULL)
 400                 return tmpdir;
 401
 402         if (tmpdir == NULL)
 403                 tmpdir = try_dir(getenv("TMPDIR"));
 404         if (tmpdir == NULL)
 405                 tmpdir = try_dir(getenv("TMP"));
 406         if (tmpdir == NULL)
 407                 tmpdir = try_dir(getenv("TEMP"));
 408
 409 #ifdef P_tmpdir
 410         if (tmpdir == NULL)
 411                 tmpdir = try_dir(P_tmpdir);
 412 #endif
 413
 414         if (tmpdir == NULL)
 415                 tmpdir = try_dir("/var/tmp");
 416         if (tmpdir == NULL)
 417                 tmpdir = try_dir("/usr/tmp");
 418         if (tmpdir == NULL)
 419                 tmpdir = try_dir("/tmp");
 420
 421         if (tmpdir == NULL)
 422                 tmpdir = ".";
 423
 424         return tmpdir;
 425 }
 426
 427 #ifndef HAVE_MKSTEMP
 428 /* cheap and nasty mkstemp replacement */
 429 static int mkstemp(char *templ)
 430 {
 431         mktemp(templ);
 432         return open(templ, O_RDWR|O_CREAT|O_EXCL|O_BINARY, 0600);
 433 }
 434 #endif
 435
 436 /**
 437  * an own version of tmpnam, which: writes in a buffer, emits no warnings
 438  * during linking (like glibc/gnu ld do for tmpnam)...
 439  */
 440 static FILE *make_temp_file(char *buffer, size_t buflen, const char *prefix)
 441 {
 442         const char *tempdir = get_tempdir();
 443
 444         snprintf(buffer, buflen, "%s/%sXXXXXX", tempdir, prefix);
 445
 446         int fd = mkstemp(buffer);
 447         if (fd == -1) {
 448                 fprintf(stderr, "couldn't create temporary file: %s\n",
 449                         strerror(errno));
 450                 exit(1);
 451         }
 452         FILE *out = fdopen(fd, "w");
 453         if (out == NULL) {
 454                 fprintf(stderr, "couldn't create temporary file FILE*\n");
 455                 exit(1);
 456         }
 457
 458         file_list_entry_t *entry = xmalloc(sizeof(*entry));
 459         memset(entry, 0, sizeof(*entry));
 460
 461         size_t  name_len = strlen(buffer) + 1;
 462         char   *name     = malloc(name_len);
 463         memcpy(name, buffer, name_len);
 464         entry->name      = name;
 465
 466         entry->next = temp_files;
 467         temp_files  = entry;
 468
 469         return out;
 470 }
 471
 472 static void free_temp_files(void)
 473 {
 474         file_list_entry_t *entry = temp_files;
 475         file_list_entry_t *next;
 476         for ( ; entry != NULL; entry = next) {
 477                 next = entry->next;
 478
 479                 unlink(entry->name);
 480                 free((char*) entry->name);
 481                 free(entry);
 482         }
 483         temp_files = NULL;
 484 }
 485
 486 /**
 487  * Do the necessary lowering for compound parameters.
 488  */
 489 void lower_compound_params(void)
 490 {
 491         lower_params_t params;
 492
 493         params.def_ptr_alignment    = 4;
 494         params.flags                = LF_COMPOUND_RETURN | LF_RETURN_HIDDEN;
 495         params.hidden_params        = ADD_HIDDEN_ALWAYS_IN_FRONT;
 496         params.find_pointer_type    = NULL;
 497         params.ret_compound_in_regs = NULL;
 498         lower_calls_with_compounds(&params);
 499 }
 500
 501 typedef enum compile_mode_t {
 502         BenchmarkParser,
 503         PreprocessOnly,
 504         ParseOnly,
 505         Compile,
 506         CompileDump,
 507         CompileAssemble,
 508         CompileAssembleLink,
 509         LexTest,
 510         PrintAst,
 511         PrintFluffy,
 512         PrintCaml,
 513         PrintJna
 514 } compile_mode_t;
 515
 516 static void usage(const char *argv0)
 517 {
 518         fprintf(stderr, "Usage %s input [-o output] [-c]\n", argv0);
 519 }
 520
 521 static void print_cparser_version(void) {
 522         printf("cparser (%s) using libFirm (%u.%u",
 523                cparser_REVISION, ir_get_version_major(),
 524                ir_get_version_minor());
 525
 526         const char *revision = ir_get_version_revision();
 527         if (revision[0] != 0) {
 528                 putchar(' ');
 529                 fputs(revision, stdout);
 530         }
 531
 532         const char *build = ir_get_version_build();
 533         if (build[0] != 0) {
 534                 putchar(' ');
 535                 fputs(build, stdout);
 536         }
 537         puts(")\n");
 538 }
 539
 540 static void set_be_option(const char *arg)
 541 {
 542         int res = firm_be_option(arg);
 543         (void) res;
 544         assert(res);
 545 }
 546
 547 static void set_option(const char *arg)
 548 {
 549         int res = firm_option(arg);
 550         (void) res;
 551         assert(res);
 552 }
 553
 554 static void copy_file(FILE *dest, FILE *input)
 555 {
 556         char buf[16384];
 557
 558         while (!feof(input) && !ferror(dest)) {
 559                 size_t read = fread(buf, 1, sizeof(buf), input);
 560                 if (fwrite(buf, 1, read, dest) != read) {
 561                         perror("couldn't write output");
 562                 }
 563         }
 564 }
 565
 566 static inline bool streq(char const* a, char const* b)
 567 {
 568         return strcmp(a, b) == 0;
 569 }
 570
 571 static inline bool strstart(char const* str, char const* start)
 572 {
 573         do {
 574                 if (*start == '\0')
 575                         return true;
 576         } while (*str++ == *start++);
 577         return false;
 578 }
 579
 580 static FILE *open_file(const char *filename)
 581 {
 582         if (streq(filename, "-")) {
 583                 return stdin;
 584         }
 585
 586         FILE *in = fopen(filename, "r");
 587         if (in == NULL) {
 588                 fprintf(stderr, "Couldn't open '%s': %s\n", filename,
 589                                 strerror(errno));
 590                 exit(1);
 591         }
 592
 593         return in;
 594 }
 595
 596 static filetype_t get_filetype_from_string(const char *string)
 597 {
 598         if (streq(string, "c") || streq(string, "c-header"))
 599                 return FILETYPE_C;
 600         if (streq(string, "c++") || streq(string, "c++-header"))
 601                 return FILETYPE_CXX;
 602         if (streq(string, "assembler"))
 603                 return FILETYPE_PREPROCESSED_ASSEMBLER;
 604         if (streq(string, "assembler-with-cpp"))
 605                 return FILETYPE_ASSEMBLER;
 606         if (streq(string, "none"))
 607                 return FILETYPE_AUTODETECT;
 608
 609         return FILETYPE_UNKNOWN;
 610 }
 611
 612 static void init_os_support(void)
 613 {
 614         /* OS option must be set to the backend */
 615         switch (firm_opt.os_support) {
 616         case OS_SUPPORT_MINGW:
 617                 set_be_option("ia32-gasmode=mingw");
 618                 wchar_atomic_kind = ATOMIC_TYPE_USHORT;
 619                 break;
 620         case OS_SUPPORT_LINUX:
 621                 set_be_option("ia32-gasmode=elf");
 622                 break;
 623         case OS_SUPPORT_MACHO:
 624                 set_be_option("ia32-gasmode=macho");
 625                 set_be_option("ia32-stackalign=4");
 626                 set_be_option("pic");
 627                 break;
 628         }
 629 }
 630
 631 typedef enum lang_standard_t {
 632         STANDARD_DEFAULT, /* gnu99 (for C, GCC does gnu89) or gnu++98 (for C++) */
 633         STANDARD_ANSI,    /* c89 (for C) or c++98 (for C++) */
 634         STANDARD_C89,     /* ISO C90 (sic) */
 635         STANDARD_C90,     /* ISO C90 as modified in amendment 1 */
 636         STANDARD_C99,     /* ISO C99 */
 637         STANDARD_GNU89,   /* ISO C90 plus GNU extensions (including some C99) */
 638         STANDARD_GNU99,   /* ISO C99 plus GNU extensions */
 639         STANDARD_CXX98,   /* ISO C++ 1998 plus amendments */
 640         STANDARD_GNUXX98  /* ISO C++ 1998 plus amendments and GNU extensions */
 641 } lang_standard_t;
 642
 643 int main(int argc, char **argv)
 644 {
 645         initialize_firm();
 646
 647         const char        *dumpfunction         = NULL;
 648         const char        *print_file_name_file = NULL;
 649         compile_mode_t     mode                 = CompileAssembleLink;
 650         int                opt_level            = 1;
 651         int                result               = EXIT_SUCCESS;
 652         char               cpu_arch[16]         = "ia32";
 653         file_list_entry_t *files                = NULL;
 654         file_list_entry_t *last_file            = NULL;
 655         bool               construct_dep_target = false;
 656         struct obstack     file_obst;
 657
 658         atexit(free_temp_files);
 659
 660         /* hack for now... */
 661         if (strstr(argv[0], "pptest") != NULL) {
 662                 extern int pptest_main(int argc, char **argv);
 663                 return pptest_main(argc, argv);
 664         }
 665
 666         obstack_init(&cppflags_obst);
 667         obstack_init(&ldflags_obst);
 668         obstack_init(&file_obst);
 669
 670 #define GET_ARG_AFTER(def, args)                                             \
 671         def = &arg[sizeof(args)-1];                                              \
 672         if (def[0] == '\0') {                                                     \
 673                 ++i;                                                                 \
 674                 if (i >= argc) {                                                      \
 675                         fprintf(stderr, "error: expected argument after '" args "'\n");  \
 676                         argument_errors = true;                                          \
 677                         break;                                                           \
 678                 }                                                                    \
 679                 def = argv[i];                                                       \
 680                 if (def[0] == '-' && def[1] != '\0') {                                \
 681                         fprintf(stderr, "error: expected argument after '" args "'\n");  \
 682                         argument_errors = true;                                          \
 683                         continue;                                                        \
 684                 }                                                                    \
 685         }
 686
 687 #define SINGLE_OPTION(ch) (option[0] == (ch) && option[1] == '\0')
 688
 689         /* early options parsing (find out optimisation level and OS) */
 690         for (int i = 1; i < argc; ++i) {
 691                 const char *arg = argv[i];
 692                 if (arg[0] != '-')
 693                         continue;
 694
 695                 const char *option = &arg[1];
 696                 if (option[0] == 'O') {
 697                         sscanf(&option[1], "%d", &opt_level);
 698                 }
 699                 if (strcmp(arg, "-fwin32") == 0) {
 700                         firm_opt.os_support = OS_SUPPORT_MINGW;
 701                 } else if (strcmp(arg, "-fmac") == 0) {
 702                         firm_opt.os_support = OS_SUPPORT_MACHO;
 703                 } else if (strcmp(arg, "-flinux") == 0) {
 704                         firm_opt.os_support = OS_SUPPORT_LINUX;
 705                 }
 706         }
 707
 708         /* set target/os specific stuff */
 709         init_os_support();
 710
 711         /* apply optimisation level */
 712         switch(opt_level) {
 713         case 0:
 714                 set_option("no-opt");
 715                 break;
 716         case 1:
 717                 set_option("no-inline");
 718                 break;
 719         default:
 720         case 4:
 721                 set_option("strict-aliasing");
 722                 /* use_builtins = true; */
 723                 /* fallthrough */
 724         case 3:
 725                 set_option("cond-eval");
 726                 set_option("if-conv");
 727                 /* fallthrough */
 728         case 2:
 729                 set_option("inline");
 730                 set_option("deconv");
 731                 set_be_option("omitfp");
 732                 break;
 733         }
 734
 735         /* parse rest of options */
 736         lang_standard_t standard        = STANDARD_DEFAULT;
 737         unsigned        features_on     = 0;
 738         unsigned        features_off    = 0;
 739         filetype_t      forced_filetype = FILETYPE_AUTODETECT;
 740         bool            help_displayed  = false;
 741         bool            argument_errors = false;
 742         for (int i = 1; i < argc; ++i) {
 743                 const char *arg = argv[i];
 744                 if (arg[0] == '-' && arg[1] != '\0') {
 745                         /* an option */
 746                         const char *option = &arg[1];
 747                         if (option[0] == 'o') {
 748                                 GET_ARG_AFTER(outname, "-o");
 749                         } else if (option[0] == 'g') {
 750                                 set_be_option("debuginfo=stabs");
 751                                 set_be_option("omitfp=no");
 752                                 set_be_option("ia32-nooptcc=yes");
 753                         } else if (SINGLE_OPTION('c')) {
 754                                 mode = CompileAssemble;
 755                         } else if (SINGLE_OPTION('E')) {
 756                                 mode = PreprocessOnly;
 757                         } else if (SINGLE_OPTION('S')) {
 758                                 mode = Compile;
 759                         } else if (option[0] == 'O') {
 760                                 continue;
 761                         } else if (option[0] == 'I') {
 762                                 const char *opt;
 763                                 GET_ARG_AFTER(opt, "-I");
 764                                 add_flag(&cppflags_obst, "-I%s", opt);
 765                         } else if (option[0] == 'D') {
 766                                 const char *opt;
 767                                 GET_ARG_AFTER(opt, "-D");
 768                                 add_flag(&cppflags_obst, "-D%s", opt);
 769                         } else if (option[0] == 'U') {
 770                                 const char *opt;
 771                                 GET_ARG_AFTER(opt, "-U");
 772                                 add_flag(&cppflags_obst, "-U%s", opt);
 773                         } else if (option[0] == 'l') {
 774                                 const char *opt;
 775                                 GET_ARG_AFTER(opt, "-l");
 776                                 add_flag(&ldflags_obst, "-l%s", opt);
 777                         } else if (option[0] == 'L') {
 778                                 const char *opt;
 779                                 GET_ARG_AFTER(opt, "-L");
 780                                 add_flag(&ldflags_obst, "-L%s", opt);
 781                         } else if (SINGLE_OPTION('v')) {
 782                                 verbose = 1;
 783                         } else if (SINGLE_OPTION('w')) {
 784                                 memset(&warning, 0, sizeof(warning));
 785                         } else if (option[0] == 'x') {
 786                                 const char *opt;
 787                                 GET_ARG_AFTER(opt, "-x");
 788                                 forced_filetype = get_filetype_from_string(opt);
 789                                 if (forced_filetype == FILETYPE_UNKNOWN) {
 790                                         fprintf(stderr, "Unknown language '%s'\n", opt);
 791                                         argument_errors = true;
 792                                 }
 793                         } else if (streq(option, "M")) {
 794                                 mode = PreprocessOnly;
 795                                 add_flag(&cppflags_obst, "-M");
 796                         } else if (streq(option, "MMD") ||
 797                                    streq(option, "MD")) {
 798                             construct_dep_target = true;
 799                                 add_flag(&cppflags_obst, "-%s", option);
 800                         } else if (streq(option, "MM")  ||
 801                                    streq(option, "MP")) {
 802                                 add_flag(&cppflags_obst, "-%s", option);
 803                         } else if (streq(option, "MT") ||
 804                                    streq(option, "MQ") ||
 805                                    streq(option, "MF")) {
 806                                 const char *opt;
 807                                 GET_ARG_AFTER(opt, "-MT");
 808                                 add_flag(&cppflags_obst, "-%s", option);
 809                                 add_flag(&cppflags_obst, "%s", opt);
 810                         } else if (streq(option, "include")) {
 811                                 const char *opt;
 812                                 GET_ARG_AFTER(opt, "-include");
 813                                 add_flag(&cppflags_obst, "-include");
 814                                 add_flag(&cppflags_obst, "%s", opt);
 815                         } else if (streq(option, "isystem")) {
 816                                 const char *opt;
 817                                 GET_ARG_AFTER(opt, "-isystem");
 818                                 add_flag(&cppflags_obst, "-isystem");
 819                                 add_flag(&cppflags_obst, "%s", opt);
 820                         } else if (streq(option, "nostdinc")
 821                                         || streq(option, "trigraphs")) {
 822                                 /* pass these through to the preprocessor */
 823                                 add_flag(&cppflags_obst, "%s", arg);
 824                         } else if (streq(option, "pipe")) {
 825                                 /* here for gcc compatibility */
 826                         } else if (option[0] == 'f') {
 827                                 char const *orig_opt;
 828                                 GET_ARG_AFTER(orig_opt, "-f");
 829
 830                                 if (strstart(orig_opt, "align-loops=") ||
 831                                     strstart(orig_opt, "align-jumps=") ||
 832                                     strstart(orig_opt, "align-functions=")) {
 833                                         fprintf(stderr, "ignoring gcc option '-f%s'\n", orig_opt);
 834                                 } else if (strstart(orig_opt, "input-charset=")) {
 835                                         char const* const encoding = strchr(orig_opt, '=') + 1;
 836                                         select_input_encoding(encoding);
 837                                 } else if (streq(orig_opt, "verbose-asm")) {
 838                                         /* ignore: we always print verbose assembler */
 839                                 } else {
 840                                         char const *opt         = orig_opt;
 841                                         bool        truth_value = true;
 842                                         if (opt[0] == 'n' && opt[1] == 'o' && opt[2] == '-') {
 843                                                 truth_value = false;
 844                                                 opt += 3;
 845                                         }
 846
 847                                         if (streq(opt, "dollars-in-identifiers")) {
 848                                                 allow_dollar_in_symbol = truth_value;
 849                                         } if (streq(opt, "builtins")) {
 850                                                 use_builtins = truth_value;
 851                                         } else if (streq(opt, "short-wchar")) {
 852                                                 wchar_atomic_kind = truth_value ? ATOMIC_TYPE_USHORT
 853                                                         : ATOMIC_TYPE_INT;
 854                                         } else if (streq(opt, "syntax-only")) {
 855                                                 mode = truth_value ? ParseOnly : CompileAssembleLink;
 856                                         } else if (streq(opt, "omit-frame-pointer")) {
 857                                                 set_be_option(truth_value ? "omitfp" : "omitfp=no");
 858                                         } else if (streq(opt, "strength-reduce")) {
 859                                                 firm_option(truth_value ? "strength-red" : "no-strength-red");
 860                                         } else if (streq(opt, "fast-math")               ||
 861                                                    streq(opt, "jump-tables")             ||
 862                                                    streq(opt, "unroll-loops")            ||
 863                                                    streq(opt, "expensive-optimizations") ||
 864                                                    streq(opt, "common")                  ||
 865                                                    streq(opt, "PIC")                     ||
 866                                                    streq(opt, "align-loops")             ||
 867                                                    streq(opt, "align-jumps")             ||
 868                                                    streq(opt, "align-functions")) {
 869                                                 fprintf(stderr, "ignoring gcc option '-f%s'\n", orig_opt);
 870                                         } else {
 871                                                 int res = firm_option(orig_opt);
 872                                                 if (res == 0) {
 873                                                         fprintf(stderr, "error: unknown Firm option '-f%s'\n",
 874                                                                 orig_opt);
 875                                                         argument_errors = true;
 876                                                         continue;
 877                                                 } else if (res == -1) {
 878                                                         help_displayed = true;
 879                                                 }
 880                                         }
 881                                 }
 882                         } else if (option[0] == 'b') {
 883                                 const char *opt;
 884                                 GET_ARG_AFTER(opt, "-b");
 885                                 int res = firm_be_option(opt);
 886                                 if (res == 0) {
 887                                         fprintf(stderr, "error: unknown Firm backend option '-b %s'\n",
 888                                                 opt);
 889                                         argument_errors = true;
 890                                 } else if (res == -1) {
 891                                         help_displayed = true;
 892                                 } else if (strstart(opt, "isa=")) {
 893                                         strncpy(cpu_arch, opt, sizeof(cpu_arch));
 894                                 }
 895                         } else if (option[0] == 'W') {
 896                                 if (strstart(option + 1, "p,")) {
 897                                         // pass options directly to the preprocessor
 898                                         const char *opt;
 899                                         GET_ARG_AFTER(opt, "-Wp,");
 900                                         add_flag(&cppflags_obst, "-Wp,%s", opt);
 901                                 } else if (strstart(option + 1, "l,")) {
 902                                         // pass options directly to the linker
 903                                         const char *opt;
 904                                         GET_ARG_AFTER(opt, "-Wl,");
 905                                         add_flag(&ldflags_obst, "-Wl,%s", opt);
 906                                 } else if (streq(option + 1, "no-trigraphs")
 907                                                         || streq(option + 1, "undef")) {
 908                                         add_flag(&cppflags_obst, "%s", arg);
 909                                 } else {
 910                                         set_warning_opt(&option[1]);
 911                                 }
 912                         } else if (option[0] == 'm') {
 913                                 /* -m options */
 914                                 const char *opt;
 915                                 char arch_opt[64];
 916
 917                                 GET_ARG_AFTER(opt, "-m");
 918                                 if (strstart(opt, "arch=")) {
 919                                         GET_ARG_AFTER(opt, "-march=");
 920                                         snprintf(arch_opt, sizeof(arch_opt), "%s-arch=%s", cpu_arch, opt);
 921                                         int res = firm_be_option(arch_opt);
 922                                         if (res == 0)
 923                                                 argument_errors = true;
 924                                         else {
 925                                                 snprintf(arch_opt, sizeof(arch_opt), "%s-opt=%s", cpu_arch, opt);
 926                                                 int res = firm_be_option(arch_opt);
 927                                                 if (res == 0)
 928                                                         argument_errors = true;
 929                                         }
 930                                 } else if (strstart(opt, "tune=")) {
 931                                         GET_ARG_AFTER(opt, "-mtune=");
 932                                         snprintf(arch_opt, sizeof(arch_opt), "%s-opt=%s", cpu_arch, opt);
 933                                         int res = firm_be_option(arch_opt);
 934                                         if (res == 0)
 935                                                 argument_errors = true;
 936                                 } else if (strstart(opt, "cpu=")) {
 937                                         GET_ARG_AFTER(opt, "-mcpu=");
 938                                         snprintf(arch_opt, sizeof(arch_opt), "%s-arch=%s", cpu_arch, opt);
 939                                         int res = firm_be_option(arch_opt);
 940                                         if (res == 0)
 941                                                 argument_errors = true;
 942                                 } else if (strstart(opt, "fpmath=")) {
 943                                         GET_ARG_AFTER(opt, "-mfpmath=");
 944                                         if (streq(opt, "387"))
 945                                                 opt = "x87";
 946                                         else if (streq(opt, "sse"))
 947                                                 opt = "sse2";
 948                                         else {
 949                                                 fprintf(stderr, "error: option -mfpumath supports only 387 or sse\n");
 950                                                 argument_errors = true;
 951                                         }
 952                                         if (!argument_errors) {
 953                                                 snprintf(arch_opt, sizeof(arch_opt), "%s-fpunit=%s", cpu_arch, opt);
 954                                                 int res = firm_be_option(arch_opt);
 955                                                 if (res == 0)
 956                                                         argument_errors = true;
 957                                         }
 958                                 } else if (strstart(opt, "preferred-stack-boundary=")) {
 959                                         GET_ARG_AFTER(opt, "-mpreferred-stack-boundary=");
 960                                         snprintf(arch_opt, sizeof(arch_opt), "%s-stackalign=%s", cpu_arch, opt);
 961                                         int res = firm_be_option(arch_opt);
 962                                         if (res == 0)
 963                                                 argument_errors = true;
 964                                 } else if (streq(opt, "omit-leaf-frame-pointer")) {
 965                                         set_be_option("omitleaffp=1");
 966                                 } else if (streq(opt, "no-omit-leaf-frame-pointer")) {
 967                                         set_be_option("omitleaffp=0");
 968                                 } else {
 969                                         char *endptr;
 970                                         long int value = strtol(opt, &endptr, 10);
 971                                         if (*endptr != '\0') {
 972                                                 fprintf(stderr, "error: wrong option '-m %s'\n",  opt);
 973                                                 argument_errors = true;
 974                                         }
 975                                         if (value != 16 && value != 32 && value != 64) {
 976                                                 fprintf(stderr, "error: option -m supports only 16, 32 or 64\n");
 977                                                 argument_errors = true;
 978                                         } else {
 979                                                 machine_size = (unsigned int)value;
 980                                         }
 981                                 }
 982                         } else if (streq(option, "pg")) {
 983                                 set_be_option("gprof");
 984                                 add_flag(&ldflags_obst, "-pg");
 985                         } else if (streq(option, "pedantic") ||
 986                                    streq(option, "ansi")) {
 987                                 fprintf(stderr, "warning: ignoring gcc option '%s'\n", arg);
 988                         } else if (streq(option, "shared")) {
 989                                 add_flag(&ldflags_obst, "-shared");
 990                         } else if (strstart(option, "std=")) {
 991                                 const char *const o = &option[4];
 992                                 standard =
 993                                         streq(o, "c++")            ? STANDARD_CXX98   :
 994                                         streq(o, "c++98")          ? STANDARD_CXX98   :
 995                                         streq(o, "c89")            ? STANDARD_C89     :
 996                                         streq(o, "c99")            ? STANDARD_C99     :
 997                                         streq(o, "c9x")            ? STANDARD_C99     : // deprecated
 998                                         streq(o, "gnu++98")        ? STANDARD_GNUXX98 :
 999                                         streq(o, "gnu89")          ? STANDARD_GNU89   :
1000                                         streq(o, "gnu99")          ? STANDARD_GNU99   :
1001                                         streq(o, "gnu9x")          ? STANDARD_GNU99   : // deprecated
1002                                         streq(o, "iso9899:1990")   ? STANDARD_C89     :
1003                                         streq(o, "iso9899:199409") ? STANDARD_C90     :
1004                                         streq(o, "iso9899:1999")   ? STANDARD_C99     :
1005                                         streq(o, "iso9899:199x")   ? STANDARD_C99     : // deprecated
1006                                         (fprintf(stderr, "warning: ignoring gcc option '%s'\n", arg), standard);
1007                         } else if (streq(option, "version")) {
1008                                 print_cparser_version();
1009                         } else if (strstart(option, "print-file-name=")) {
1010                                 GET_ARG_AFTER(print_file_name_file, "-print-file-name=");
1011                         } else if (option[0] == '-') {
1012                                 /* double dash option */
1013                                 ++option;
1014                                 if (streq(option, "gcc")) {
1015                                         features_on  |=  _GNUC;
1016                                         features_off &= ~_GNUC;
1017                                 } else if (streq(option, "no-gcc")) {
1018                                         features_on  &= ~_GNUC;
1019                                         features_off |=  _GNUC;
1020                                 } else if (streq(option, "ms")) {
1021                                         features_on  |=  _MS;
1022                                         features_off &= ~_MS;
1023                                 } else if (streq(option, "no-ms")) {
1024                                         features_on  &= ~_MS;
1025                                         features_off |=  _MS;
1026                                 } else if (streq(option, "signed-chars")) {
1027                                         char_is_signed = true;
1028                                 } else if (streq(option, "unsigned-chars")) {
1029                                         char_is_signed = false;
1030                                 } else if (streq(option, "strict")) {
1031                                         strict_mode = true;
1032                                 } else if (streq(option, "lextest")) {
1033                                         mode = LexTest;
1034                                 } else if (streq(option, "benchmark")) {
1035                                         mode = BenchmarkParser;
1036                                 } else if (streq(option, "print-ast")) {
1037                                         mode = PrintAst;
1038                                 } else if (streq(option, "print-implicit-cast")) {
1039                                         print_implicit_casts = true;
1040                                 } else if (streq(option, "print-parenthesis")) {
1041                                         print_parenthesis = true;
1042                                 } else if (streq(option, "print-fluffy")) {
1043                                         mode = PrintFluffy;
1044                                 } else if (streq(option, "print-caml")) {
1045                                         mode = PrintCaml;
1046                                 } else if (streq(option, "print-jna")) {
1047                                         mode = PrintJna;
1048                                 } else if (streq(option, "version")) {
1049                                         print_cparser_version();
1050                                         exit(EXIT_SUCCESS);
1051                                 } else if (streq(option, "dump-function")) {
1052                                         ++i;
1053                                         if (i >= argc) {
1054                                                 fprintf(stderr, "error: "
1055                                                         "expected argument after '--dump-function'\n");
1056                                                 argument_errors = true;
1057                                                 break;
1058                                         }
1059                                         dumpfunction = argv[i];
1060                                         mode         = CompileDump;
1061                                 } else {
1062                                         fprintf(stderr, "error: unknown argument '%s'\n", arg);
1063                                         argument_errors = true;
1064                                 }
1065                         } else {
1066                                 fprintf(stderr, "error: unknown argument '%s'\n", arg);
1067                                 argument_errors = true;
1068                         }
1069                 } else {
1070                         filetype_t type = forced_filetype;
1071                         if (type == FILETYPE_AUTODETECT) {
1072                                 if (streq(arg, "-")) {
1073                                         /* - implicitly means C source file */
1074                                         type = FILETYPE_C;
1075                                 } else {
1076                                         const char *suffix = strrchr(arg, '.');
1077                                         /* Ensure there is at least one char before the suffix */
1078                                         if (suffix != NULL && suffix != arg) {
1079                                                 ++suffix;
1080                                                 type =
1081                                                         streq(suffix, "S")   ? FILETYPE_ASSEMBLER              :
1082                                                         streq(suffix, "a")   ? FILETYPE_OBJECT                 :
1083                                                         streq(suffix, "c")   ? FILETYPE_C                      :
1084                                                         streq(suffix, "cc")  ? FILETYPE_CXX                    :
1085                                                         streq(suffix, "cpp") ? FILETYPE_CXX                    :
1086                                                         streq(suffix, "cxx") ? FILETYPE_CXX                    :
1087                                                         streq(suffix, "h")   ? FILETYPE_C                      :
1088                                                         streq(suffix, "o")   ? FILETYPE_OBJECT                 :
1089                                                         streq(suffix, "s")   ? FILETYPE_PREPROCESSED_ASSEMBLER :
1090                                                         streq(suffix, "so")  ? FILETYPE_OBJECT                 :
1091                                                         FILETYPE_AUTODETECT;
1092                                         }
1093                                 }
1094
1095                                 if (type == FILETYPE_AUTODETECT) {
1096                                         fprintf(stderr, "'%s': file format not recognized\n", arg);
1097                                         continue;
1098                                 }
1099                         }
1100
1101                         file_list_entry_t *entry
1102                                 = obstack_alloc(&file_obst, sizeof(entry[0]));
1103                         memset(entry, 0, sizeof(entry[0]));
1104                         entry->name = arg;
1105                         entry->type = type;
1106
1107                         if (last_file != NULL) {
1108                                 last_file->next = entry;
1109                         } else {
1110                                 files = entry;
1111                         }
1112                         last_file = entry;
1113                 }
1114         }
1115
1116         if (print_file_name_file != NULL) {
1117                 print_file_name(print_file_name_file);
1118                 return 0;
1119         }
1120
1121         if (files == NULL) {
1122                 fprintf(stderr, "error: no input files specified\n");
1123                 argument_errors = true;
1124         }
1125
1126         if (help_displayed) {
1127                 return !argument_errors;
1128         }
1129         if (argument_errors) {
1130                 usage(argv[0]);
1131                 return 1;
1132         }
1133
1134         /* we do the lowering in ast2firm */
1135         firm_opt.lower_bitfields = FALSE;
1136
1137         gen_firm_init();
1138         init_symbol_table();
1139         init_types();
1140         init_typehash();
1141         init_basic_types();
1142         init_lexer();
1143         init_ast();
1144         init_parser();
1145         init_ast2firm();
1146         init_mangle();
1147
1148         if (construct_dep_target) {
1149                 if (outname != 0 && strlen(outname) >= 2) {
1150                         get_output_name(dep_target, sizeof(dep_target), outname, ".d");
1151                 } else {
1152                         get_output_name(dep_target, sizeof(dep_target), files->name, ".d");
1153                 }
1154         } else {
1155                 dep_target[0] = '\0';
1156         }
1157
1158         char outnamebuf[4096];
1159         if (outname == NULL) {
1160                 const char *filename = files->name;
1161
1162                 switch(mode) {
1163                 case BenchmarkParser:
1164                 case PrintAst:
1165                 case PrintFluffy:
1166                 case PrintCaml:
1167                 case PrintJna:
1168                 case LexTest:
1169                 case PreprocessOnly:
1170                 case ParseOnly:
1171                         outname = "-";
1172                         break;
1173                 case Compile:
1174                         get_output_name(outnamebuf, sizeof(outnamebuf), filename, ".s");
1175                         outname = outnamebuf;
1176                         break;
1177                 case CompileAssemble:
1178                         get_output_name(outnamebuf, sizeof(outnamebuf), filename, ".o");
1179                         outname = outnamebuf;
1180                         break;
1181                 case CompileDump:
1182                         get_output_name(outnamebuf, sizeof(outnamebuf), dumpfunction,
1183                                         ".vcg");
1184                         outname = outnamebuf;
1185                         break;
1186                 case CompileAssembleLink:
1187 #ifdef _WIN32
1188                         outname = "a.exe";
1189 #else
1190                         outname = "a.out";
1191 #endif
1192                         break;
1193                 }
1194         }
1195
1196         assert(outname != NULL);
1197
1198         FILE *out;
1199         if (streq(outname, "-")) {
1200                 out = stdout;
1201         } else {
1202                 out = fopen(outname, "w");
1203                 if (out == NULL) {
1204                         fprintf(stderr, "Couldn't open '%s' for writing: %s\n", outname,
1205                                         strerror(errno));
1206                         return 1;
1207                 }
1208         }
1209
1210         file_list_entry_t *file;
1211         for (file = files; file != NULL; file = file->next) {
1212                 char        asm_tempfile[1024];
1213                 const char *filename = file->name;
1214                 filetype_t  filetype = file->type;
1215
1216                 if (filetype == FILETYPE_OBJECT)
1217                         continue;
1218
1219                 FILE *in = NULL;
1220                 if (mode == LexTest) {
1221                         if (in == NULL)
1222                                 in = open_file(filename);
1223                         lextest(in, filename);
1224                         fclose(in);
1225                         exit(EXIT_SUCCESS);
1226                 }
1227
1228                 FILE *preprocessed_in = NULL;
1229                 switch (filetype) {
1230                         case FILETYPE_C:
1231                                 filetype = FILETYPE_PREPROCESSED_C;
1232                                 goto preprocess;
1233                         case FILETYPE_CXX:
1234                                 filetype = FILETYPE_PREPROCESSED_CXX;
1235                                 goto preprocess;
1236                         case FILETYPE_ASSEMBLER:
1237                                 filetype = FILETYPE_PREPROCESSED_ASSEMBLER;
1238                                 add_flag(&cppflags_obst, "-x");
1239                                 add_flag(&cppflags_obst, "assembler-with-cpp");
1240                                 goto preprocess;
1241 preprocess:
1242                                 /* no support for input on FILE* yet */
1243                                 if (in != NULL)
1244                                         panic("internal compiler error: in for preprocessor != NULL");
1245
1246                                 preprocessed_in = preprocess(filename);
1247                                 if (mode == PreprocessOnly) {
1248                                         copy_file(out, preprocessed_in);
1249                                         int result = pclose(preprocessed_in);
1250                                         fclose(out);
1251                                         /* remove output file in case of error */
1252                                         if (out != stdout && result != EXIT_SUCCESS) {
1253                                                 unlink(outname);
1254                                         }
1255                                         return result;
1256                                 }
1257
1258                                 in = preprocessed_in;
1259                                 break;
1260
1261                         default:
1262                                 break;
1263                 }
1264
1265                 FILE *asm_out;
1266                 if (mode == Compile) {
1267                         asm_out = out;
1268                 } else {
1269                         asm_out = make_temp_file(asm_tempfile, sizeof(asm_tempfile), "ccs");
1270                 }
1271
1272                 if (in == NULL)
1273                         in = open_file(filename);
1274
1275                 /* preprocess and compile */
1276                 if (filetype == FILETYPE_PREPROCESSED_C) {
1277                         char const* invalid_mode;
1278                         switch (standard) {
1279                                 case STANDARD_ANSI:
1280                                 case STANDARD_C89:   c_mode = _C89;                break;
1281                                 /* TODO ^v determine difference between these two */
1282                                 case STANDARD_C90:   c_mode = _C89;                break;
1283                                 case STANDARD_C99:   c_mode = _C89 | _C99;         break;
1284                                 case STANDARD_GNU89: c_mode = _C89 |        _GNUC; break;
1285
1286 default_c_warn:
1287                                         fprintf(stderr,
1288                                                         "warning: command line option \"-std=%s\" is not valid for C\n",
1289                                                         invalid_mode);
1290                                         /* FALLTHROUGH */
1291                                 case STANDARD_DEFAULT:
1292                                 case STANDARD_GNU99:   c_mode = _C89 | _C99 | _GNUC; break;
1293
1294                                 case STANDARD_CXX98:   invalid_mode = "c++98"; goto default_c_warn;
1295                                 case STANDARD_GNUXX98: invalid_mode = "gnu98"; goto default_c_warn;
1296                         }
1297                         goto do_parsing;
1298                 } else if (filetype == FILETYPE_PREPROCESSED_CXX) {
1299                         char const* invalid_mode;
1300                         switch (standard) {
1301                                 case STANDARD_C89:   invalid_mode = "c89";   goto default_cxx_warn;
1302                                 case STANDARD_C90:   invalid_mode = "c90";   goto default_cxx_warn;
1303                                 case STANDARD_C99:   invalid_mode = "c99";   goto default_cxx_warn;
1304                                 case STANDARD_GNU89: invalid_mode = "gnu89"; goto default_cxx_warn;
1305                                 case STANDARD_GNU99: invalid_mode = "gnu99"; goto default_cxx_warn;
1306
1307                                 case STANDARD_ANSI:
1308                                 case STANDARD_CXX98: c_mode = _CXX; break;
1309
1310 default_cxx_warn:
1311                                         fprintf(stderr,
1312                                                         "warning: command line option \"-std=%s\" is not valid for C++\n",
1313                                                         invalid_mode);
1314                                 case STANDARD_DEFAULT:
1315                                 case STANDARD_GNUXX98: c_mode = _CXX | _GNUC; break;
1316                         }
1317
1318 do_parsing:
1319                         c_mode |= features_on;
1320                         c_mode &= ~features_off;
1321                         init_tokens();
1322                         translation_unit_t *const unit = do_parsing(in, filename);
1323
1324                         /* prints the AST even if errors occurred */
1325                         if (mode == PrintAst) {
1326                                 type_set_output(out);
1327                                 ast_set_output(out);
1328                                 print_ast(unit);
1329                         }
1330
1331                         if (error_count > 0) {
1332                                 /* parsing failed because of errors */
1333                                 fprintf(stderr, "%u error(s), %u warning(s)\n", error_count,
1334                                         warning_count);
1335                                 result = EXIT_FAILURE;
1336                                 continue;
1337                         } else if (warning_count > 0) {
1338                                 fprintf(stderr, "%u warning(s)\n", warning_count);
1339                         }
1340
1341                         if (in == preprocessed_in) {
1342                                 int pp_result = pclose(preprocessed_in);
1343                                 if (pp_result != EXIT_SUCCESS) {
1344                                         /* remove output file */
1345                                         if (out != stdout)
1346                                                 unlink(outname);
1347                                         exit(EXIT_FAILURE);
1348                                 }
1349                         }
1350
1351                         if (mode == BenchmarkParser) {
1352                                 return result;
1353                         } else if (mode == PrintFluffy) {
1354                                 write_fluffy_decls(out, unit);
1355                                 continue;
1356                         } else if (mode == PrintCaml) {
1357                                 write_caml_decls(out, unit);
1358                                 continue;
1359                         } else if (mode == PrintJna) {
1360                                 write_jna_decls(out, unit);
1361                                 continue;
1362                         }
1363
1364                         translation_unit_to_firm(unit);
1365
1366                         if (mode == ParseOnly) {
1367                                 continue;
1368                         }
1369
1370                         if (mode == CompileDump) {
1371                                 /* find irg */
1372                                 ident    *id     = new_id_from_str(dumpfunction);
1373                                 ir_graph *irg    = NULL;
1374                                 int       n_irgs = get_irp_n_irgs();
1375                                 for (int i = 0; i < n_irgs; ++i) {
1376                                         ir_graph *tirg   = get_irp_irg(i);
1377                                         ident    *irg_id = get_entity_ident(get_irg_entity(tirg));
1378                                         if (irg_id == id) {
1379                                                 irg = tirg;
1380                                                 break;
1381                                         }
1382                                 }
1383
1384                                 if (irg == NULL) {
1385                                         fprintf(stderr, "No graph for function '%s' found\n",
1386                                                 dumpfunction);
1387                                         exit(1);
1388                                 }
1389
1390                                 dump_ir_block_graph_file(irg, out);
1391                                 fclose(out);
1392                                 exit(0);
1393                         }
1394
1395                         gen_firm_finish(asm_out, filename, /*c_mode=*/1,
1396                                         have_const_functions);
1397                         if (asm_out != out) {
1398                                 fclose(asm_out);
1399                         }
1400                 } else if (filetype == FILETYPE_PREPROCESSED_ASSEMBLER) {
1401                         copy_file(asm_out, in);
1402                         if (in == preprocessed_in) {
1403                                 int pp_result = pclose(preprocessed_in);
1404                                 if (pp_result != EXIT_SUCCESS) {
1405                                         /* remove output in error case */
1406                                         if (out != stdout)
1407                                                 unlink(outname);
1408                                         return pp_result;
1409                                 }
1410                         }
1411                         if (asm_out != out) {
1412                                 fclose(asm_out);
1413                         }
1414                 }
1415
1416                 if (mode == Compile)
1417                         continue;
1418
1419                 /* if we're here then we have preprocessed assembly */
1420                 filename = asm_tempfile;
1421                 filetype = FILETYPE_PREPROCESSED_ASSEMBLER;
1422
1423                 /* assemble */
1424                 if (filetype == FILETYPE_PREPROCESSED_ASSEMBLER) {
1425                         char        temp[1024];
1426                         const char *filename_o;
1427                         if (mode == CompileAssemble) {
1428                                 fclose(out);
1429                                 filename_o = outname;
1430                         } else {
1431                                 FILE *tempf = make_temp_file(temp, sizeof(temp), "cco");
1432                                 fclose(tempf);
1433                                 filename_o = temp;
1434                         }
1435
1436                         assemble(filename_o, filename);
1437
1438                         size_t len = strlen(filename_o) + 1;
1439                         filename = obstack_copy(&file_obst, filename_o, len);
1440                         filetype = FILETYPE_OBJECT;
1441                 }
1442
1443                 /* ok we're done here, process next file */
1444                 file->name = filename;
1445                 file->type = filetype;
1446         }
1447
1448         if (result != EXIT_SUCCESS) {
1449                 if (out != stdout)
1450                         unlink(outname);
1451                 return result;
1452         }
1453
1454         /* link program file */
1455         if (mode == CompileAssembleLink) {
1456                 obstack_1grow(&ldflags_obst, '\0');
1457                 const char *flags = obstack_finish(&ldflags_obst);
1458
1459                 /* construct commandline */
1460                 obstack_printf(&file_obst, "%s", LINKER);
1461                 for (file_list_entry_t *entry = files; entry != NULL;
1462                                 entry = entry->next) {
1463                         if (entry->type != FILETYPE_OBJECT)
1464                                 continue;
1465
1466                         add_flag(&file_obst, "%s", entry->name);
1467                 }
1468
1469                 add_flag(&file_obst, "-o");
1470                 add_flag(&file_obst, outname);
1471                 obstack_printf(&file_obst, "%s", flags);
1472                 obstack_1grow(&file_obst, '\0');
1473
1474                 char *commandline = obstack_finish(&file_obst);
1475
1476                 if (verbose) {
1477                         puts(commandline);
1478                 }
1479                 int err = system(commandline);
1480                 if (err != EXIT_SUCCESS) {
1481                         fprintf(stderr, "linker reported an error\n");
1482                         exit(1);
1483                 }
1484         }
1485
1486         obstack_free(&cppflags_obst, NULL);
1487         obstack_free(&ldflags_obst, NULL);
1488         obstack_free(&file_obst, NULL);
1489
1490         exit_mangle();
1491         exit_ast2firm();
1492         exit_parser();
1493         exit_ast();
1494         exit_lexer();
1495         exit_typehash();
1496         exit_types();
1497         exit_tokens();
1498         exit_symbol_table();
1499         return 0;
1500 }