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