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_timing.h"
  74 #include "driver/firm_machine.h"
  75 #include "adt/error.h"
  76 #include "adt/strutil.h"
  77 #include "wrappergen/write_fluffy.h"
  78 #include "wrappergen/write_jna.h"
  79 #include "revision.h"
  80 #include "warning.h"
  81 #include "help.h"
  82 #include "mangle.h"
  83 #include "printer.h"
  84
  85 #ifndef PREPROCESSOR
  86 #ifndef __WIN32__
  87 #define PREPROCESSOR "gcc -E -U__STRICT_ANSI__"
  88 #else
  89 #define PREPROCESSOR "cpp -U__STRICT_ANSI__"
  90 #endif
  91 #endif
  92
  93 #ifndef LINKER
  94 #define LINKER    "gcc"
  95 #endif
  96
  97 #ifndef ASSEMBLER
  98 #define ASSEMBLER "gcc -c -xassembler"
  99 #endif
 100
 101 unsigned int        c_mode                    = _C89 | _ANSI | _C99 | _GNUC;
 102 bool                byte_order_big_endian     = false;
 103 bool                strict_mode               = false;
 104 bool                enable_main_collect2_hack = false;
 105 bool                freestanding              = false;
 106 unsigned            architecture_modulo_shift = 0;
 107
 108 static bool               char_is_signed      = true;
 109 static atomic_type_kind_t wchar_atomic_kind   = ATOMIC_TYPE_INT;
 110
 111 static machine_triple_t *target_machine;
 112 static const char       *target_triple;
 113 static int               verbose;
 114 static struct obstack    cppflags_obst;
 115 static struct obstack    ldflags_obst;
 116 static struct obstack    asflags_obst;
 117 static char              dep_target[1024];
 118 static const char       *outname;
 119 static bool              define_intmax_types;
 120 static const char       *input_encoding;
 121
 122 typedef enum lang_standard_t {
 123         STANDARD_DEFAULT, /* gnu99 (for C, GCC does gnu89) or gnu++98 (for C++) */
 124         STANDARD_ANSI,    /* c89 (for C) or c++98 (for C++) */
 125         STANDARD_C89,     /* ISO C90 (sic) */
 126         STANDARD_C90,     /* ISO C90 as modified in amendment 1 */
 127         STANDARD_C99,     /* ISO C99 */
 128         STANDARD_GNU89,   /* ISO C90 plus GNU extensions (including some C99) */
 129         STANDARD_GNU99,   /* ISO C99 plus GNU extensions */
 130         STANDARD_CXX98,   /* ISO C++ 1998 plus amendments */
 131         STANDARD_GNUXX98  /* ISO C++ 1998 plus amendments and GNU extensions */
 132 } lang_standard_t;
 133
 134 static lang_standard_t standard;
 135
 136 typedef struct file_list_entry_t file_list_entry_t;
 137
 138 typedef enum filetype_t {
 139         FILETYPE_AUTODETECT,
 140         FILETYPE_C,
 141         FILETYPE_PREPROCESSED_C,
 142         FILETYPE_CXX,
 143         FILETYPE_PREPROCESSED_CXX,
 144         FILETYPE_ASSEMBLER,
 145         FILETYPE_PREPROCESSED_ASSEMBLER,
 146         FILETYPE_OBJECT,
 147         FILETYPE_IR,
 148         FILETYPE_UNKNOWN
 149 } filetype_t;
 150
 151 struct file_list_entry_t {
 152         const char  *name; /**< filename or NULL for stdin */
 153         filetype_t   type;
 154         file_list_entry_t *next;
 155 };
 156
 157 static file_list_entry_t *temp_files;
 158
 159 static void get_output_name(char *buf, size_t buflen, const char *inputname,
 160                             const char *newext)
 161 {
 162         if (inputname == NULL)
 163                 inputname = "a";
 164
 165         char const *const last_slash = strrchr(inputname, '/');
 166         char const *const filename   =
 167                 last_slash != NULL ? last_slash + 1 : inputname;
 168         char const *const last_dot   = strrchr(filename, '.');
 169         char const *const name_end   =
 170                 last_dot != NULL ? last_dot : strchr(filename, '\0');
 171
 172         int const len = snprintf(buf, buflen, "%.*s%s",
 173                         (int)(name_end - filename), filename, newext);
 174 #ifdef _WIN32
 175         if (len < 0 || buflen <= (size_t)len)
 176 #else
 177         if (buflen <= (size_t)len)
 178 #endif
 179                 panic("filename too long");
 180 }
 181
 182 static translation_unit_t *do_parsing(FILE *const in, const char *const input_name)
 183 {
 184         start_parsing();
 185
 186         input_t *input = input_from_stream(in, input_encoding);
 187         lexer_switch_input(input, input_name);
 188         parse();
 189         translation_unit_t *unit = finish_parsing();
 190         input_free(input);
 191
 192         return unit;
 193 }
 194
 195 static void lextest(FILE *in, const char *fname)
 196 {
 197         input_t *input = input_from_stream(in, input_encoding);
 198         lexer_switch_input(input, fname);
 199
 200         do {
 201                 lexer_next_preprocessing_token();
 202                 print_token(stdout, &lexer_token);
 203                 putchar('\n');
 204         } while (lexer_token.kind != T_EOF);
 205         input_free(input);
 206 }
 207
 208 static void add_flag(struct obstack *obst, const char *format, ...)
 209 {
 210         char buf[65536];
 211         va_list ap;
 212
 213         va_start(ap, format);
 214 #ifdef _WIN32
 215         int len =
 216 #endif
 217                 vsnprintf(buf, sizeof(buf), format, ap);
 218         va_end(ap);
 219
 220         obstack_1grow(obst, ' ');
 221 #ifdef _WIN32
 222         obstack_1grow(obst, '"');
 223         obstack_grow(obst, buf, len);
 224         obstack_1grow(obst, '"');
 225 #else
 226         /* escape stuff... */
 227         for (char *c = buf; *c != '\0'; ++c) {
 228                 switch(*c) {
 229                 case ' ':
 230                 case '"':
 231                 case '$':
 232                 case '&':
 233                 case '(':
 234                 case ')':
 235                 case ';':
 236                 case '<':
 237                 case '>':
 238                 case '\'':
 239                 case '\\':
 240                 case '\n':
 241                 case '\r':
 242                 case '\t':
 243                 case '`':
 244                 case '|':
 245                         obstack_1grow(obst, '\\');
 246                         /* FALLTHROUGH */
 247                 default:
 248                         obstack_1grow(obst, *c);
 249                         break;
 250                 }
 251         }
 252 #endif
 253 }
 254
 255 static const char *type_to_string(type_t *type)
 256 {
 257         assert(type->kind == TYPE_ATOMIC);
 258         return get_atomic_kind_name(type->atomic.akind);
 259 }
 260
 261 static FILE *preprocess(const char *fname, filetype_t filetype)
 262 {
 263         static const char *common_flags = NULL;
 264
 265         if (common_flags == NULL) {
 266                 obstack_1grow(&cppflags_obst, '\0');
 267                 const char *flags = obstack_finish(&cppflags_obst);
 268
 269                 /* setup default defines */
 270                 add_flag(&cppflags_obst, "-U__WCHAR_TYPE__");
 271                 add_flag(&cppflags_obst, "-D__WCHAR_TYPE__=%s", type_to_string(type_wchar_t));
 272                 add_flag(&cppflags_obst, "-U__SIZE_TYPE__");
 273                 add_flag(&cppflags_obst, "-D__SIZE_TYPE__=%s", type_to_string(type_size_t));
 274
 275                 add_flag(&cppflags_obst, "-U__VERSION__");
 276                 add_flag(&cppflags_obst, "-D__VERSION__=\"%s\"", cparser_REVISION);
 277
 278                 if (define_intmax_types) {
 279                         add_flag(&cppflags_obst, "-U__INTMAX_TYPE__");
 280                         add_flag(&cppflags_obst, "-D__INTMAX_TYPE__=%s", type_to_string(type_intmax_t));
 281                         add_flag(&cppflags_obst, "-U__UINTMAX_TYPE__");
 282                         add_flag(&cppflags_obst, "-D__UINTMAX_TYPE__=%s", type_to_string(type_uintmax_t));
 283                 }
 284
 285                 if (flags[0] != '\0') {
 286                         size_t len = strlen(flags);
 287                         obstack_1grow(&cppflags_obst, ' ');
 288                         obstack_grow(&cppflags_obst, flags, len);
 289                 }
 290                 obstack_1grow(&cppflags_obst, '\0');
 291                 common_flags = obstack_finish(&cppflags_obst);
 292         }
 293
 294         assert(obstack_object_size(&cppflags_obst) == 0);
 295
 296         const char *preprocessor = getenv("CPARSER_PP");
 297         if (preprocessor != NULL) {
 298                 obstack_printf(&cppflags_obst, "%s ", preprocessor);
 299         } else {
 300                 if (target_triple != NULL)
 301                         obstack_printf(&cppflags_obst, "%s-", target_triple);
 302                 obstack_printf(&cppflags_obst, PREPROCESSOR);
 303         }
 304
 305         char const *lang;
 306         switch (filetype) {
 307         case FILETYPE_C:         lang = "c";                  break;
 308         case FILETYPE_CXX:       lang = "c++";                break;
 309         case FILETYPE_ASSEMBLER: lang = "assembler-with-cpp"; break;
 310         default:                 lang = NULL;                 break;
 311         }
 312         if (lang)
 313                 add_flag(&cppflags_obst, "-x%s", lang);
 314
 315         obstack_printf(&cppflags_obst, "%s", common_flags);
 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         add_flag(&cppflags_obst, fname);
 327         obstack_1grow(&cppflags_obst, '\0');
 328
 329         char *commandline = obstack_finish(&cppflags_obst);
 330         if (verbose) {
 331                 puts(commandline);
 332         }
 333         FILE *f = popen(commandline, "r");
 334         if (f == NULL) {
 335                 fprintf(stderr, "invoking preprocessor failed\n");
 336                 exit(EXIT_FAILURE);
 337         }
 338         /* we do not really need that anymore */
 339         obstack_free(&cppflags_obst, commandline);
 340
 341         return f;
 342 }
 343
 344 static void assemble(const char *out, const char *in)
 345 {
 346         obstack_1grow(&asflags_obst, '\0');
 347         const char *flags = obstack_finish(&asflags_obst);
 348
 349         const char *assembler = getenv("CPARSER_AS");
 350         if (assembler != NULL) {
 351                 obstack_printf(&asflags_obst, "%s", assembler);
 352         } else {
 353                 if (target_triple != NULL)
 354                         obstack_printf(&asflags_obst, "%s-", target_triple);
 355                 obstack_printf(&asflags_obst, "%s", ASSEMBLER);
 356         }
 357         if (flags[0] != '\0')
 358                 obstack_printf(&asflags_obst, " %s", flags);
 359
 360         obstack_printf(&asflags_obst, " %s -o %s", in, out);
 361         obstack_1grow(&asflags_obst, '\0');
 362
 363         char *commandline = obstack_finish(&asflags_obst);
 364         if (verbose) {
 365                 puts(commandline);
 366         }
 367         int err = system(commandline);
 368         if (err != EXIT_SUCCESS) {
 369                 fprintf(stderr, "assembler reported an error\n");
 370                 exit(EXIT_FAILURE);
 371         }
 372         obstack_free(&asflags_obst, commandline);
 373 }
 374
 375 static void print_file_name(const char *file)
 376 {
 377         add_flag(&ldflags_obst, "-print-file-name=%s", file);
 378
 379         obstack_1grow(&ldflags_obst, '\0');
 380         const char *flags = obstack_finish(&ldflags_obst);
 381
 382         /* construct commandline */
 383         const char *linker = getenv("CPARSER_LINK");
 384         if (linker != NULL) {
 385                 obstack_printf(&ldflags_obst, "%s ", linker);
 386         } else {
 387                 if (target_triple != NULL)
 388                         obstack_printf(&ldflags_obst, "%s-", target_triple);
 389                 obstack_printf(&ldflags_obst, "%s ", LINKER);
 390         }
 391         obstack_printf(&ldflags_obst, "%s ", linker);
 392         obstack_printf(&ldflags_obst, "%s", flags);
 393         obstack_1grow(&ldflags_obst, '\0');
 394
 395         char *commandline = obstack_finish(&ldflags_obst);
 396         if (verbose) {
 397                 puts(commandline);
 398         }
 399         int err = system(commandline);
 400         if (err != EXIT_SUCCESS) {
 401                 fprintf(stderr, "linker reported an error\n");
 402                 exit(EXIT_FAILURE);
 403         }
 404         obstack_free(&ldflags_obst, commandline);
 405 }
 406
 407 static const char *try_dir(const char *dir)
 408 {
 409         if (dir == NULL)
 410                 return dir;
 411         if (access(dir, R_OK | W_OK | X_OK) == 0)
 412                 return dir;
 413         return NULL;
 414 }
 415
 416 static const char *get_tempdir(void)
 417 {
 418         static const char *tmpdir = NULL;
 419
 420         if (tmpdir != NULL)
 421                 return tmpdir;
 422
 423         if (tmpdir == NULL)
 424                 tmpdir = try_dir(getenv("TMPDIR"));
 425         if (tmpdir == NULL)
 426                 tmpdir = try_dir(getenv("TMP"));
 427         if (tmpdir == NULL)
 428                 tmpdir = try_dir(getenv("TEMP"));
 429
 430 #ifdef P_tmpdir
 431         if (tmpdir == NULL)
 432                 tmpdir = try_dir(P_tmpdir);
 433 #endif
 434
 435         if (tmpdir == NULL)
 436                 tmpdir = try_dir("/var/tmp");
 437         if (tmpdir == NULL)
 438                 tmpdir = try_dir("/usr/tmp");
 439         if (tmpdir == NULL)
 440                 tmpdir = try_dir("/tmp");
 441
 442         if (tmpdir == NULL)
 443                 tmpdir = ".";
 444
 445         return tmpdir;
 446 }
 447
 448 #ifndef HAVE_MKSTEMP
 449 /* cheap and nasty mkstemp replacement */
 450 static int mkstemp(char *templ)
 451 {
 452         mktemp(templ);
 453         return open(templ, O_RDWR|O_CREAT|O_EXCL|O_BINARY, 0600);
 454 }
 455 #endif
 456
 457 /**
 458  * an own version of tmpnam, which: writes in a buffer, emits no warnings
 459  * during linking (like glibc/gnu ld do for tmpnam)...
 460  */
 461 static FILE *make_temp_file(char *buffer, size_t buflen, const char *prefix)
 462 {
 463         const char *tempdir = get_tempdir();
 464
 465         snprintf(buffer, buflen, "%s/%sXXXXXX", tempdir, prefix);
 466
 467         int fd = mkstemp(buffer);
 468         if (fd == -1) {
 469                 fprintf(stderr, "could not create temporary file: %s\n",
 470                         strerror(errno));
 471                 exit(EXIT_FAILURE);
 472         }
 473         FILE *out = fdopen(fd, "w");
 474         if (out == NULL) {
 475                 fprintf(stderr, "could not create temporary file FILE*\n");
 476                 exit(EXIT_FAILURE);
 477         }
 478
 479         file_list_entry_t *entry = xmalloc(sizeof(*entry));
 480         memset(entry, 0, sizeof(*entry));
 481
 482         size_t  name_len = strlen(buffer) + 1;
 483         char   *name     = malloc(name_len);
 484         memcpy(name, buffer, name_len);
 485         entry->name      = name;
 486
 487         entry->next = temp_files;
 488         temp_files  = entry;
 489
 490         return out;
 491 }
 492
 493 static void free_temp_files(void)
 494 {
 495         file_list_entry_t *entry = temp_files;
 496         file_list_entry_t *next;
 497         for ( ; entry != NULL; entry = next) {
 498                 next = entry->next;
 499
 500                 unlink(entry->name);
 501                 free((char*) entry->name);
 502                 free(entry);
 503         }
 504         temp_files = NULL;
 505 }
 506
 507 typedef enum compile_mode_t {
 508         BenchmarkParser,
 509         PreprocessOnly,
 510         ParseOnly,
 511         Compile,
 512         CompileDump,
 513         CompileExportIR,
 514         CompileAssemble,
 515         CompileAssembleLink,
 516         LexTest,
 517         PrintAst,
 518         PrintFluffy,
 519         PrintJna
 520 } compile_mode_t;
 521
 522 static void usage(const char *argv0)
 523 {
 524         fprintf(stderr, "Usage %s [options] input [-o output]\n", argv0);
 525 }
 526
 527 static void print_cparser_version(void)
 528 {
 529         printf("cparser (%s) using libFirm (%u.%u",
 530                cparser_REVISION, ir_get_version_major(),
 531                ir_get_version_minor());
 532
 533         const char *revision = ir_get_version_revision();
 534         if (revision[0] != 0) {
 535                 putchar('-');
 536                 fputs(revision, stdout);
 537         }
 538
 539         const char *build = ir_get_version_build();
 540         if (build[0] != 0) {
 541                 putchar(' ');
 542                 fputs(build, stdout);
 543         }
 544         puts(")");
 545         puts("This is free software; see the source for copying conditions.  There is NO\n"
 546              "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n");
 547 }
 548
 549 static void print_cparser_version_short(void)
 550 {
 551         puts(cparser_REVISION);
 552 }
 553
 554 static void print_help_basic(const char *argv0)
 555 {
 556         usage(argv0);
 557         puts("");
 558         put_help("--help",                   "Display this information");
 559         put_help("--version",                "Display compiler version");
 560         put_help("--help-parser",            "Display information about parser options");
 561         put_help("--help-warnings",          "Display information about warning options");
 562         put_help("--help-codegen",           "Display information about code-generation options");
 563         put_help("--help-optimization",      "Display information about optimization options");
 564         put_help("--help-linker",            "Display information about linker options");
 565         put_help("--help-language-tools",    "Display information about language tools options");
 566         put_help("--help-debug",             "Display information about compiler debugging options");
 567         put_help("--help-firm",              "Display information about direct firm options");
 568         put_help("--help-all",               "Display information about all options");
 569         put_help("-c",                       "Compile and assemble but do not link");
 570         put_help("-E",                       "Preprocess only");
 571         put_help("-S",                       "Compile but do not assembler or link");
 572         put_help("-o",                       "Specify output file");
 573         put_help("-v",                       "Verbose output (show invocation of sub-processes)");
 574         put_help("-x",                       "Force input language:");
 575         put_choice("c",                      "C");
 576         put_choice("c++",                    "C++");
 577         put_choice("assembler",              "Assembler (no preprocessing)");
 578         put_choice("assembler-with-cpp",     "Assembler with preprocessing");
 579         put_choice("none",                   "Autodetection");
 580         put_help("-pipe",                    "Ignored (gcc compatibility)");
 581 }
 582
 583 static void print_help_preprocessor(void)
 584 {
 585         put_help("-nostdinc",                "Do not search standard system include directories");
 586         put_help("-trigraphs",               "Support ISO C trigraphs");
 587         put_help("-isystem",                 "");
 588         put_help("-include",                 "");
 589         put_help("-I PATH",                  "");
 590         put_help("-D SYMBOL[=value]",        "");
 591         put_help("-U SYMBOL",                "");
 592         put_help("-Wp,OPTION",               "Pass option directly to preprocessor");
 593         put_help("-M",                       "");
 594         put_help("-MD",                      "");
 595         put_help("-MMD",                     "");
 596         put_help("-MM",                      "");
 597         put_help("-MP",                      "");
 598         put_help("-MT",                      "");
 599         put_help("-MQ",                      "");
 600         put_help("-MF",                      "");
 601 }
 602
 603 static void print_help_parser(void)
 604 {
 605         put_help("-finput-charset=CHARSET",  "Select encoding of input files");
 606         put_help("-fmessage-length=LEN",     "Ignored (gcc compatibility)");
 607         put_help("-fshort-wchar",            "Type \"wchar_t\" is unsigned short instead of int");
 608         put_help("-fshow-column",            "Show the column number in diagnostic messages");
 609         put_help("-fsigned-char",            "Type \"char\" is a signed type");
 610         put_help("-funsigned-char",          "Type \"char\" is an unsigned type");
 611         put_help("--ms",                     "Enable msvc extensions");
 612         put_help("--no-ms",                  "Disable msvc extensions");
 613         put_help("--gcc",                    "Enable gcc extensions");
 614         put_help("--no-gcc",                 "Disable gcc extensions");
 615         put_help("-std=STANDARD",            "Specify language standard:");
 616         put_choice("c99",                    "ISO C99 standard");
 617         put_choice("c89",                    "ISO C89 standard");
 618         put_choice("c9x",                    "Deprecated");
 619         put_choice("c++",                    "ISO C++ 98");
 620         put_choice("c++98",                  "ISO C++ 98");
 621         put_choice("gnu99",                  "ISO C99 + GNU extensions (default)");
 622         put_choice("gnu89",                  "ISO C89 + GNU extensions");
 623         put_choice("gnu9x",                  "Deprecated");
 624         put_choice("iso9899:1990",           "ISO C89");
 625         put_choice("iso9899:199409",         "ISO C90");
 626         put_choice("iso9899:1999",           "ISO C99");
 627         put_choice("iso9899:199x",           "Deprecated");
 628         put_help("-pedantic",                "Ignored (gcc compatibility)");
 629         put_help("-ansi",                    "Ignored (gcc compatibility)");
 630         put_help("--strict",                 "Enable strict conformance checking");
 631 }
 632
 633 static void print_help_warnings(void)
 634 {
 635         put_help("-f[no-]diagnostics-show-option", "Show the switch, which controls a warning, after each warning");
 636         put_help("-w",                             "Disable all warnings");
 637         put_help("-Wno-trigraphs",                 "Warn if input contains trigraphs");
 638         put_help("-Wundef",                        "Warn if an undefined macro is used in an #if");
 639         put_help("-Wmissing-include-dirs",         "Warn about missing user-specified include directories");
 640         put_help("-Wendif-labels",                 "Warn about stray text after #elif and #endif");
 641         put_help("-Winit-self",                    "Ignored (gcc compatibility)");
 642         put_help("-Wformat-y2k",                   "Ignored (gcc compatibility)");
 643         put_help("-Wformat-security",              "Ignored (gcc compatibility)");
 644         put_help("-Wold-style-declaration",        "Ignored (gcc compatibility)");
 645         put_help("-Wtype-limits",                  "Ignored (gcc compatibility)");
 646         print_warning_opt_help();
 647 }
 648
 649 static void print_help_optimization(void)
 650 {
 651         put_help("-O LEVEL",                 "Select optimization level (0-4)");
 652         firm_option_help(put_help);
 653         put_help("-fexpensive-optimizations","Ignored (gcc compatibility)");
 654 }
 655
 656 static void print_help_codegeneration(void)
 657 {
 658         put_help("-g",                       "Generate debug information");
 659         put_help("-pg",                      "Instrument code for gnu gprof");
 660         put_help("-fomit-frame-pointer",     "Produce code without frame pointer where possible");
 661         put_help("-ffreestanding",           "Compile in freestanding mode (see ISO C standard)");
 662         put_help("-fhosted",                 "Compile in hosted (not freestanding) mode");
 663         put_help("-fprofile-generate",       "Generate instrumented code to collect profile information");
 664         put_help("-fprofile-use",            "Use profile information generated by instrumented binaries");
 665         put_help("-ffp-precise",             "Precise floating point model");
 666         put_help("-ffp-fast",                "Imprecise floating point model");
 667         put_help("-ffp-strict",              "Strict floating point model");
 668         put_help("-pthread",                 "Use pthread threading library");
 669         put_help("-mtarget=TARGET",          "Specify target architecture as CPU-manufacturer-OS triple");
 670         put_help("-mtriple=TARGET",          "Alias for -mtarget (clang compatibility)");
 671         put_help("-march=ARCH",              "");
 672         put_help("-mtune=ARCH",              "");
 673         put_help("-mcpu=CPU",                "");
 674         put_help("-mfpmath=",                "");
 675         put_help("-mpreferred-stack-boundary=", "");
 676         put_help("-mrtd",                    "");
 677         put_help("-mregparm=",               "Not supported yet");
 678         put_help("-msoft-float",             "Not supported yet");
 679         put_help("-m32",                     "Generate 32bit code");
 680         put_help("-m64",                     "Generate 64bit code");
 681         put_help("-fverbose-asm",            "Ignored (gcc compatibility)");
 682         put_help("-fjump-tables",            "Ignored (gcc compatibility)");
 683         put_help("-fcommon",                 "Ignored (gcc compatibility)");
 684         put_help("-foptimize-sibling-calls", "Ignored (gcc compatibility)");
 685         put_help("-falign-loops",            "Ignored (gcc compatibility)");
 686         put_help("-falign-jumps",            "Ignored (gcc compatibility)");
 687         put_help("-falign-functions",        "Ignored (gcc compatibility)");
 688         put_help("-fPIC",                    "Ignored (gcc compatibility)");
 689         put_help("-ffast-math",              "Same as -ffp-fast (gcc compatibility)");
 690         puts("");
 691         puts("\tMost of these options can be used with a no- prefix to disable them");
 692         puts("\te.g. -fno-omit-frame-pointer");
 693 }
 694
 695 static void print_help_linker(void)
 696 {
 697         put_help("-l LIBRARY",               "");
 698         put_help("-L PATH",                  "");
 699         put_help("-s",                       "Do not produce symbol table and relocation information");
 700         put_help("-shared",                  "Produce a shared library");
 701         put_help("-static",                  "Produce statically linked binary");
 702         put_help("-Wl,OPTION",               "Pass option directly to linker");
 703 }
 704
 705 static void print_help_debug(void)
 706 {
 707         put_help("--lextest",                "Preprocess and tokenize only");
 708         put_help("--print-ast",              "Preprocess, parse and print AST");
 709         put_help("--print-implicit-cast",    "");
 710         put_help("--print-parenthesis",      "");
 711         put_help("--benchmark",              "Preprocess and parse, produces no output");
 712         put_help("--time",                   "Measure time of compiler passes");
 713         put_help("--dump-function func",     "Preprocess, parse and output vcg graph of func");
 714         put_help("--export-ir",              "Preprocess, parse and output compiler intermediate representation");
 715 }
 716
 717 static void print_help_language_tools(void)
 718 {
 719         put_help("--print-fluffy",           "Preprocess, parse and generate declarations for the fluffy language");
 720         put_help("--print-jna",              "Preprocess, parse and generate declarations for JNA");
 721         put_help("--jna-limit filename",     "");
 722         put_help("--jna-libname name",       "");
 723 }
 724
 725 static void print_help_firm(void)
 726 {
 727         put_help("-bOPTION",                 "Directly pass option to libFirm backend");
 728         int res = be_parse_arg("help");
 729         (void) res;
 730         assert(res);
 731 }
 732
 733 typedef enum {
 734         HELP_NONE          = 0,
 735         HELP_BASIC         = 1 << 0,
 736         HELP_PREPROCESSOR  = 1 << 1,
 737         HELP_PARSER        = 1 << 2,
 738         HELP_WARNINGS      = 1 << 3,
 739         HELP_OPTIMIZATION  = 1 << 4,
 740         HELP_CODEGEN       = 1 << 5,
 741         HELP_LINKER        = 1 << 6,
 742         HELP_LANGUAGETOOLS = 1 << 7,
 743         HELP_DEBUG         = 1 << 8,
 744         HELP_FIRM          = 1 << 9,
 745
 746         HELP_ALL           = -1
 747 } help_sections_t;
 748
 749 static void print_help(const char *argv0, help_sections_t sections)
 750 {
 751         if (sections & HELP_BASIC)         print_help_basic(argv0);
 752         if (sections & HELP_PREPROCESSOR)  print_help_preprocessor();
 753         if (sections & HELP_PARSER)        print_help_parser();
 754         if (sections & HELP_WARNINGS)      print_help_warnings();
 755         if (sections & HELP_OPTIMIZATION)  print_help_optimization();
 756         if (sections & HELP_CODEGEN)       print_help_codegeneration();
 757         if (sections & HELP_LINKER)        print_help_linker();
 758         if (sections & HELP_LANGUAGETOOLS) print_help_language_tools();
 759         if (sections & HELP_DEBUG)         print_help_debug();
 760         if (sections & HELP_FIRM)          print_help_firm();
 761 }
 762
 763 static void set_be_option(const char *arg)
 764 {
 765         int res = be_parse_arg(arg);
 766         (void) res;
 767         assert(res);
 768 }
 769
 770 static void copy_file(FILE *dest, FILE *input)
 771 {
 772         char buf[16384];
 773
 774         while (!feof(input) && !ferror(dest)) {
 775                 size_t read = fread(buf, 1, sizeof(buf), input);
 776                 if (fwrite(buf, 1, read, dest) != read) {
 777                         perror("could not write output");
 778                 }
 779         }
 780 }
 781
 782 static FILE *open_file(const char *filename)
 783 {
 784         if (streq(filename, "-")) {
 785                 return stdin;
 786         }
 787
 788         FILE *in = fopen(filename, "r");
 789         if (in == NULL) {
 790                 fprintf(stderr, "Could not open '%s': %s\n", filename,
 791                                 strerror(errno));
 792                 exit(EXIT_FAILURE);
 793         }
 794
 795         return in;
 796 }
 797
 798 static filetype_t get_filetype_from_string(const char *string)
 799 {
 800         if (streq(string, "c") || streq(string, "c-header"))
 801                 return FILETYPE_C;
 802         if (streq(string, "c++") || streq(string, "c++-header"))
 803                 return FILETYPE_CXX;
 804         if (streq(string, "assembler"))
 805                 return FILETYPE_PREPROCESSED_ASSEMBLER;
 806         if (streq(string, "assembler-with-cpp"))
 807                 return FILETYPE_ASSEMBLER;
 808         if (streq(string, "none"))
 809                 return FILETYPE_AUTODETECT;
 810
 811         return FILETYPE_UNKNOWN;
 812 }
 813
 814 static bool init_os_support(void)
 815 {
 816         wchar_atomic_kind         = ATOMIC_TYPE_INT;
 817         enable_main_collect2_hack = false;
 818         define_intmax_types       = false;
 819
 820         if (firm_is_unixish_os(target_machine)) {
 821                 set_create_ld_ident(create_name_linux_elf);
 822         } else if (firm_is_darwin_os(target_machine)) {
 823                 set_create_ld_ident(create_name_macho);
 824                 define_intmax_types = true;
 825         } else if (firm_is_windows_os(target_machine)) {
 826                 wchar_atomic_kind         = ATOMIC_TYPE_USHORT;
 827                 enable_main_collect2_hack = true;
 828                 set_create_ld_ident(create_name_win32);
 829         } else {
 830                 return false;
 831         }
 832
 833         return true;
 834 }
 835
 836 static bool parse_target_triple(const char *arg)
 837 {
 838         machine_triple_t *triple = firm_parse_machine_triple(arg);
 839         if (triple == NULL) {
 840                 fprintf(stderr, "Target-triple is not in the form 'cpu_type-manufacturer-operating_system'\n");
 841                 return false;
 842         }
 843         target_machine = triple;
 844         return true;
 845 }
 846
 847 static unsigned decide_modulo_shift(unsigned type_size)
 848 {
 849         if (architecture_modulo_shift == 0)
 850                 return 0;
 851         if (type_size < architecture_modulo_shift)
 852                 return architecture_modulo_shift;
 853         return type_size;
 854 }
 855
 856 static bool is_ia32_cpu(const char *architecture)
 857 {
 858         return streq(architecture, "i386")
 859             || streq(architecture, "i486")
 860             || streq(architecture, "i586")
 861             || streq(architecture, "i686")
 862             || streq(architecture, "i786");
 863 }
 864
 865 static const char *setup_isa_from_tripel(const machine_triple_t *machine)
 866 {
 867         const char *cpu = machine->cpu_type;
 868
 869         if (is_ia32_cpu(cpu)) {
 870                 return "ia32";
 871         } else if (streq(cpu, "x86_64")) {
 872                 return "amd64";
 873         } else if (streq(cpu, "sparc")) {
 874                 return "sparc";
 875         } else if (streq(cpu, "arm")) {
 876                 return "arm";
 877         } else {
 878                 fprintf(stderr, "Unknown cpu '%s' in target-triple\n", cpu);
 879                 return NULL;
 880         }
 881 }
 882
 883 static const char *setup_target_machine(void)
 884 {
 885         if (!setup_firm_for_machine(target_machine))
 886                 exit(1);
 887
 888         const char *isa = setup_isa_from_tripel(target_machine);
 889
 890         if (isa == NULL)
 891                 exit(1);
 892
 893         init_os_support();
 894
 895         return isa;
 896 }
 897
 898 /**
 899  * initialize cparser type properties based on a firm type
 900  */
 901 static void set_typeprops_type(atomic_type_properties_t* props, ir_type *type)
 902 {
 903         props->size             = get_type_size_bytes(type);
 904         props->alignment        = get_type_alignment_bytes(type);
 905         props->struct_alignment = props->alignment;
 906 }
 907
 908 /**
 909  * Copy atomic type properties except the integer conversion rank
 910  */
 911 static void copy_typeprops(atomic_type_properties_t *dest,
 912                            const atomic_type_properties_t *src)
 913 {
 914         dest->size             = src->size;
 915         dest->alignment        = src->alignment;
 916         dest->struct_alignment = src->struct_alignment;
 917         dest->flags            = src->flags;
 918 }
 919
 920 static void init_types_and_adjust(void)
 921 {
 922         const backend_params *be_params = be_get_backend_param();
 923         unsigned machine_size = be_params->machine_size;
 924         init_types(machine_size);
 925
 926         atomic_type_properties_t *props = atomic_type_properties;
 927
 928         /* adjust types as requested by target architecture */
 929         ir_type *type_long_double = be_params->type_long_double;
 930         if (type_long_double != NULL) {
 931                 set_typeprops_type(&props[ATOMIC_TYPE_LONG_DOUBLE], type_long_double);
 932                 atomic_modes[ATOMIC_TYPE_LONG_DOUBLE] = get_type_mode(type_long_double);
 933         }
 934
 935         ir_type *type_long_long = be_params->type_long_long;
 936         if (type_long_long != NULL)
 937                 set_typeprops_type(&props[ATOMIC_TYPE_LONGLONG], type_long_long);
 938
 939         ir_type *type_unsigned_long_long = be_params->type_unsigned_long_long;
 940         if (type_unsigned_long_long != NULL)
 941                 set_typeprops_type(&props[ATOMIC_TYPE_ULONGLONG], type_unsigned_long_long);
 942
 943         /* operating system ABI specifics */
 944         if (firm_is_darwin_os(target_machine)) {
 945                 if (machine_size == 32) {
 946                         props[ATOMIC_TYPE_LONGLONG].struct_alignment    =  4;
 947                         props[ATOMIC_TYPE_ULONGLONG].struct_alignment   =  4;
 948                         props[ATOMIC_TYPE_DOUBLE].struct_alignment      =  4;
 949                         props[ATOMIC_TYPE_LONG_DOUBLE].size             = 16;
 950                         props[ATOMIC_TYPE_LONG_DOUBLE].alignment        = 16;
 951                         props[ATOMIC_TYPE_LONG_DOUBLE].struct_alignment = 16;
 952                 }
 953         } else if (firm_is_windows_os(target_machine)) {
 954                 if (machine_size == 64) {
 955                         /* to ease porting of old c-code microsoft decided to use 32bits
 956                          * even for long */
 957                         props[ATOMIC_TYPE_LONG]  = props[ATOMIC_TYPE_INT];
 958                         props[ATOMIC_TYPE_ULONG] = props[ATOMIC_TYPE_UINT];
 959                 }
 960
 961                 /* on windows long double is not supported */
 962                 props[ATOMIC_TYPE_LONG_DOUBLE] = props[ATOMIC_TYPE_DOUBLE];
 963         } else if (firm_is_unixish_os(target_machine)) {
 964                 if (is_ia32_cpu(target_machine->cpu_type)) {
 965                         /* System V has a broken alignment for double so we have to add
 966                          * a hack here */
 967                         props[ATOMIC_TYPE_DOUBLE].struct_alignment    = 4;
 968                         props[ATOMIC_TYPE_LONGLONG].struct_alignment  = 4;
 969                         props[ATOMIC_TYPE_ULONGLONG].struct_alignment = 4;
 970                 }
 971         }
 972
 973         /* stuff decided after processing operating system specifics and
 974          * commandline flags */
 975         if (char_is_signed) {
 976                 props[ATOMIC_TYPE_CHAR].flags |= ATOMIC_TYPE_FLAG_SIGNED;
 977         } else {
 978                 props[ATOMIC_TYPE_CHAR].flags &= ~ATOMIC_TYPE_FLAG_SIGNED;
 979         }
 980         /* copy over wchar_t properties (including rank) */
 981         props[ATOMIC_TYPE_WCHAR_T] = props[wchar_atomic_kind];
 982
 983         /* initialize defaults for unsupported types */
 984         if (type_long_long == NULL) {
 985                 copy_typeprops(&props[ATOMIC_TYPE_LONGLONG], &props[ATOMIC_TYPE_LONG]);
 986         }
 987         if (type_unsigned_long_long == NULL) {
 988                 copy_typeprops(&props[ATOMIC_TYPE_ULONGLONG],
 989                                &props[ATOMIC_TYPE_ULONG]);
 990         }
 991         if (type_long_double == NULL) {
 992                 copy_typeprops(&props[ATOMIC_TYPE_LONG_DOUBLE],
 993                                &props[ATOMIC_TYPE_DOUBLE]);
 994         }
 995
 996         /* initialize firm pointer modes */
 997         char               name[64];
 998         unsigned           bit_size     = machine_size;
 999         unsigned           modulo_shift = decide_modulo_shift(bit_size);
1000
1001         snprintf(name, sizeof(name), "p%u", machine_size);
1002         ir_mode *ptr_mode = new_reference_mode(name, irma_twos_complement, bit_size, modulo_shift);
1003
1004         if (machine_size == 16) {
1005                 set_reference_mode_signed_eq(ptr_mode, mode_Hs);
1006                 set_reference_mode_unsigned_eq(ptr_mode, mode_Hu);
1007         } else if (machine_size == 32) {
1008                 set_reference_mode_signed_eq(ptr_mode, mode_Is);
1009                 set_reference_mode_unsigned_eq(ptr_mode, mode_Iu);
1010         } else if (machine_size == 64) {
1011                 set_reference_mode_signed_eq(ptr_mode, mode_Ls);
1012                 set_reference_mode_unsigned_eq(ptr_mode, mode_Lu);
1013         } else {
1014                 panic("strange machine_size when determining pointer modes");
1015         }
1016
1017         /* Hmm, pointers should be machine size */
1018         set_modeP_data(ptr_mode);
1019         set_modeP_code(ptr_mode);
1020
1021         byte_order_big_endian = be_params->byte_order_big_endian;
1022         if (be_params->modulo_shift_efficient) {
1023                 architecture_modulo_shift = machine_size;
1024         } else {
1025                 architecture_modulo_shift = 0;
1026         }
1027 }
1028
1029 int main(int argc, char **argv)
1030 {
1031         const char        *dumpfunction         = NULL;
1032         const char        *print_file_name_file = NULL;
1033         compile_mode_t     mode                 = CompileAssembleLink;
1034         int                opt_level            = 1;
1035         int                result               = EXIT_SUCCESS;
1036         char               cpu_arch[16]         = "ia32";
1037         file_list_entry_t *files                = NULL;
1038         file_list_entry_t *last_file            = NULL;
1039         bool               construct_dep_target = false;
1040         bool               do_timing            = false;
1041         bool               profile_generate     = false;
1042         bool               profile_use          = false;
1043         struct obstack     file_obst;
1044
1045         atexit(free_temp_files);
1046
1047         /* hack for now... */
1048         if (strstr(argv[0], "pptest") != NULL) {
1049                 extern int pptest_main(int argc, char **argv);
1050                 return pptest_main(argc, argv);
1051         }
1052
1053         obstack_init(&cppflags_obst);
1054         obstack_init(&ldflags_obst);
1055         obstack_init(&asflags_obst);
1056         obstack_init(&file_obst);
1057
1058 #define GET_ARG_AFTER(def, args)                                             \
1059         do {                                                                     \
1060         def = &arg[sizeof(args)-1];                                              \
1061         if (def[0] == '\0') {                                                    \
1062                 ++i;                                                                 \
1063                 if (i >= argc) {                                                     \
1064                         fprintf(stderr, "error: expected argument after '" args "'\n");  \
1065                         argument_errors = true;                                          \
1066                         break;                                                           \
1067                 }                                                                    \
1068                 def = argv[i];                                                       \
1069                 if (def[0] == '-' && def[1] != '\0') {                               \
1070                         fprintf(stderr, "error: expected argument after '" args "'\n");  \
1071                         argument_errors = true;                                          \
1072                         continue;                                                        \
1073                 }                                                                    \
1074         }                                                                        \
1075         } while (0)
1076
1077 #define SINGLE_OPTION(ch) (option[0] == (ch) && option[1] == '\0')
1078
1079         /* initialize this early because it has to parse options */
1080         gen_firm_init();
1081
1082         /* early options parsing (find out optimization level and OS) */
1083         for (int i = 1; i < argc; ++i) {
1084                 const char *arg = argv[i];
1085                 if (arg[0] != '-')
1086                         continue;
1087
1088                 const char *option = &arg[1];
1089                 if (option[0] == 'O') {
1090                         sscanf(&option[1], "%d", &opt_level);
1091                 }
1092         }
1093
1094         if (target_machine == NULL) {
1095                 target_machine = firm_get_host_machine();
1096         }
1097         choose_optimization_pack(opt_level);
1098         setup_target_machine();
1099
1100         /* parse rest of options */
1101                         standard        = STANDARD_DEFAULT;
1102         unsigned        features_on     = 0;
1103         unsigned        features_off    = 0;
1104         filetype_t      forced_filetype = FILETYPE_AUTODETECT;
1105         help_sections_t help            = HELP_NONE;
1106         bool            argument_errors = false;
1107         for (int i = 1; i < argc; ++i) {
1108                 const char *arg = argv[i];
1109                 if (arg[0] == '-' && arg[1] != '\0') {
1110                         /* an option */
1111                         const char *option = &arg[1];
1112                         if (option[0] == 'o') {
1113                                 GET_ARG_AFTER(outname, "-o");
1114                         } else if (option[0] == 'g') {
1115                                 /* TODO: parse -gX with 0<=x<=3... */
1116                                 set_be_option("debug=frameinfo");
1117                                 set_be_option("ia32-nooptcc=yes");
1118                         } else if (SINGLE_OPTION('c')) {
1119                                 mode = CompileAssemble;
1120                         } else if (SINGLE_OPTION('E')) {
1121                                 mode = PreprocessOnly;
1122                         } else if (SINGLE_OPTION('s')) {
1123                                 add_flag(&ldflags_obst, "-s");
1124                         } else if (SINGLE_OPTION('S')) {
1125                                 mode = Compile;
1126                         } else if (option[0] == 'O') {
1127                                 continue;
1128                         } else if (option[0] == 'I') {
1129                                 const char *opt;
1130                                 GET_ARG_AFTER(opt, "-I");
1131                                 add_flag(&cppflags_obst, "-I%s", opt);
1132                         } else if (option[0] == 'D') {
1133                                 const char *opt;
1134                                 GET_ARG_AFTER(opt, "-D");
1135                                 add_flag(&cppflags_obst, "-D%s", opt);
1136                         } else if (option[0] == 'U') {
1137                                 const char *opt;
1138                                 GET_ARG_AFTER(opt, "-U");
1139                                 add_flag(&cppflags_obst, "-U%s", opt);
1140                         } else if (option[0] == 'l') {
1141                                 const char *opt;
1142                                 GET_ARG_AFTER(opt, "-l");
1143                                 add_flag(&ldflags_obst, "-l%s", opt);
1144                         } else if (option[0] == 'L') {
1145                                 const char *opt;
1146                                 GET_ARG_AFTER(opt, "-L");
1147                                 add_flag(&ldflags_obst, "-L%s", opt);
1148                         } else if (SINGLE_OPTION('v')) {
1149                                 verbose = 1;
1150                         } else if (SINGLE_OPTION('w')) {
1151                                 add_flag(&cppflags_obst, "-w");
1152                                 disable_all_warnings();
1153                         } else if (option[0] == 'x') {
1154                                 const char *opt;
1155                                 GET_ARG_AFTER(opt, "-x");
1156                                 forced_filetype = get_filetype_from_string(opt);
1157                                 if (forced_filetype == FILETYPE_UNKNOWN) {
1158                                         fprintf(stderr, "Unknown language '%s'\n", opt);
1159                                         argument_errors = true;
1160                                 }
1161                         } else if (streq(option, "M")) {
1162                                 mode = PreprocessOnly;
1163                                 add_flag(&cppflags_obst, "-M");
1164                         } else if (streq(option, "MMD") ||
1165                                    streq(option, "MD")) {
1166                             construct_dep_target = true;
1167                                 add_flag(&cppflags_obst, "-%s", option);
1168                         } else if (streq(option, "MM")  ||
1169                                    streq(option, "MP")) {
1170                                 add_flag(&cppflags_obst, "-%s", option);
1171                         } else if (streq(option, "MT") ||
1172                                    streq(option, "MQ") ||
1173                                    streq(option, "MF")) {
1174                                 const char *opt;
1175                                 GET_ARG_AFTER(opt, "-MT");
1176                                 add_flag(&cppflags_obst, "-%s", option);
1177                                 add_flag(&cppflags_obst, "%s", opt);
1178                         } else if (streq(option, "include")) {
1179                                 const char *opt;
1180                                 GET_ARG_AFTER(opt, "-include");
1181                                 add_flag(&cppflags_obst, "-include");
1182                                 add_flag(&cppflags_obst, "%s", opt);
1183                         } else if (streq(option, "isystem")) {
1184                                 const char *opt;
1185                                 GET_ARG_AFTER(opt, "-isystem");
1186                                 add_flag(&cppflags_obst, "-isystem");
1187                                 add_flag(&cppflags_obst, "%s", opt);
1188 #if defined(linux) || defined(__linux) || defined(__linux__) || defined(__CYGWIN__)
1189                         } else if (streq(option, "pthread")) {
1190                                 /* set flags for the preprocessor */
1191                                 add_flag(&cppflags_obst, "-D_REENTRANT");
1192                                 /* set flags for the linker */
1193                                 add_flag(&ldflags_obst, "-lpthread");
1194 #endif
1195                         } else if (streq(option, "nostdinc")
1196                                         || streq(option, "trigraphs")) {
1197                                 /* pass these through to the preprocessor */
1198                                 add_flag(&cppflags_obst, "%s", arg);
1199                         } else if (streq(option, "pipe")) {
1200                                 /* here for gcc compatibility */
1201                         } else if (streq(option, "static")) {
1202                                 add_flag(&ldflags_obst, "-static");
1203                         } else if (streq(option, "shared")) {
1204                                 add_flag(&ldflags_obst, "-shared");
1205                         } else if (option[0] == 'f') {
1206                                 char const *orig_opt;
1207                                 GET_ARG_AFTER(orig_opt, "-f");
1208
1209                                 if (strstart(orig_opt, "input-charset=")) {
1210                                         char const* const encoding = strchr(orig_opt, '=') + 1;
1211                                         input_encoding = encoding;
1212                                 } else if (strstart(orig_opt, "align-loops=") ||
1213                                            strstart(orig_opt, "align-jumps=") ||
1214                                            strstart(orig_opt, "align-functions=")) {
1215                                         fprintf(stderr, "ignoring gcc option '-f%s'\n", orig_opt);
1216                                 } else if (strstart(orig_opt, "visibility=")) {
1217                                         const char *val = strchr(orig_opt, '=')+1;
1218                                         elf_visibility_tag_t visibility
1219                                                 = get_elf_visibility_from_string(val);
1220                                         if (visibility == ELF_VISIBILITY_ERROR) {
1221                                                 fprintf(stderr, "invalid visibility '%s' specified\n",
1222                                                         val);
1223                                                 argument_errors = true;
1224                                         } else {
1225                                                 set_default_visibility(visibility);
1226                                         }
1227                                 } else if (strstart(orig_opt, "message-length=")) {
1228                                         /* ignore: would only affect error message format */
1229                                 } else if (streq(orig_opt, "fast-math") ||
1230                                            streq(orig_opt, "fp-fast")) {
1231                                         firm_fp_model = fp_model_fast;
1232                                 } else if (streq(orig_opt, "fp-precise")) {
1233                                         firm_fp_model = fp_model_precise;
1234                                 } else if (streq(orig_opt, "fp-strict")) {
1235                                         firm_fp_model = fp_model_strict;
1236                                 } else if (streq(orig_opt, "help")) {
1237                                         fprintf(stderr, "warning: -fhelp is deprecated\n");
1238                                         help |= HELP_OPTIMIZATION;
1239                                 } else {
1240                                         /* -f options which have an -fno- variant */
1241                                         char const *opt         = orig_opt;
1242                                         bool        truth_value = true;
1243                                         if (opt[0] == 'n' && opt[1] == 'o' && opt[2] == '-') {
1244                                                 truth_value = false;
1245                                                 opt += 3;
1246                                         }
1247
1248                                         if (streq(opt, "diagnostics-show-option")) {
1249                                                 diagnostics_show_option = truth_value;
1250                                         } else if (streq(opt, "dollars-in-identifiers")) {
1251                                                 allow_dollar_in_symbol = truth_value;
1252                                         } else if (streq(opt, "omit-frame-pointer")) {
1253                                                 set_be_option(truth_value ? "omitfp" : "omitfp=no");
1254                                         } else if (streq(opt, "short-wchar")) {
1255                                                 wchar_atomic_kind = truth_value ? ATOMIC_TYPE_USHORT
1256                                                         : ATOMIC_TYPE_INT;
1257                                         } else if (streq(opt, "show-column")) {
1258                                                 show_column = truth_value;
1259                                         } else if (streq(opt, "signed-char")) {
1260                                                 char_is_signed = truth_value;
1261                                         } else if (streq(opt, "strength-reduce")) {
1262                                                 /* does nothing, for gcc compatibility (even gcc does
1263                                                  * nothing for this switch anymore) */
1264                                         } else if (streq(opt, "syntax-only")) {
1265                                                 mode = truth_value ? ParseOnly : CompileAssembleLink;
1266                                         } else if (streq(opt, "unsigned-char")) {
1267                                                 char_is_signed = !truth_value;
1268                                         } else if (streq(opt, "freestanding")) {
1269                                                 freestanding = truth_value;
1270                                         } else if (streq(opt, "hosted")) {
1271                                                 freestanding = !truth_value;
1272                                         } else if (streq(opt, "profile-generate")) {
1273                                                 profile_generate = truth_value;
1274                                         } else if (streq(opt, "profile-use")) {
1275                                                 profile_use = truth_value;
1276                                         } else if (!truth_value &&
1277                                                    streq(opt, "asynchronous-unwind-tables")) {
1278                                             /* nothing todo, a gcc feature which we do not support
1279                                              * anyway was deactivated */
1280                                         } else if (streq(opt, "verbose-asm")) {
1281                                                 /* ignore: we always print verbose assembler */
1282                                         } else if (streq(opt, "jump-tables")             ||
1283                                                    streq(opt, "expensive-optimizations") ||
1284                                                    streq(opt, "common")                  ||
1285                                                    streq(opt, "optimize-sibling-calls")  ||
1286                                                    streq(opt, "align-loops")             ||
1287                                                    streq(opt, "align-jumps")             ||
1288                                                    streq(opt, "align-functions")         ||
1289                                                    streq(opt, "unroll-loops")            ||
1290                                                    streq(opt, "PIC")                     ||
1291                                                    streq(opt, "stack-protector")         ||
1292                                                    streq(opt, "stack-protector-all")) {
1293                                                 fprintf(stderr, "ignoring gcc option '-f%s'\n", orig_opt);
1294                                         } else {
1295                                                 int res = firm_option(orig_opt);
1296                                                 if (res == 0) {
1297                                                         fprintf(stderr, "error: unknown Firm option '-f%s'\n",
1298                                                                 orig_opt);
1299                                                         argument_errors = true;
1300                                                         continue;
1301                                                 }
1302                                         }
1303                                 }
1304                         } else if (option[0] == 'b') {
1305                                 const char *opt;
1306                                 GET_ARG_AFTER(opt, "-b");
1307
1308                                 if (streq(opt, "help")) {
1309                                         fprintf(stderr, "warning: -bhelp is deprecated (use --help-firm)\n");
1310                                         help |= HELP_FIRM;
1311                                 } else {
1312                                         int res = be_parse_arg(opt);
1313                                         if (res == 0) {
1314                                                 fprintf(stderr, "error: unknown Firm backend option '-b %s'\n",
1315                                                                 opt);
1316                                                 argument_errors = true;
1317                                         } else if (strstart(opt, "isa=")) {
1318                                                 strncpy(cpu_arch, opt, sizeof(cpu_arch));
1319                                         }
1320                                 }
1321                         } else if (option[0] == 'W') {
1322                                 if (strstart(option + 1, "p,")) {
1323                                         // pass options directly to the preprocessor
1324                                         const char *opt;
1325                                         GET_ARG_AFTER(opt, "-Wp,");
1326                                         add_flag(&cppflags_obst, "-Wp,%s", opt);
1327                                 } else if (strstart(option + 1, "l,")) {
1328                                         // pass options directly to the linker
1329                                         const char *opt;
1330                                         GET_ARG_AFTER(opt, "-Wl,");
1331                                         add_flag(&ldflags_obst, "-Wl,%s", opt);
1332                                 } else if (streq(option + 1, "no-trigraphs")
1333                                                         || streq(option + 1, "undef")
1334                                                         || streq(option + 1, "missing-include-dirs")
1335                                                         || streq(option + 1, "endif-labels")) {
1336                                         add_flag(&cppflags_obst, "%s", arg);
1337                                 } else if (streq(option+1, "init-self")) {
1338                                         /* ignored (same as gcc does) */
1339                                 } else if (streq(option+1, "format-y2k")
1340                                            || streq(option+1, "format-security")
1341                                            || streq(option+1, "old-style-declaration")
1342                                            || streq(option+1, "type-limits")) {
1343                                     /* ignore (gcc compatibility) */
1344                                 } else {
1345                                         set_warning_opt(&option[1]);
1346                                 }
1347                         } else if (option[0] == 'm') {
1348                                 /* -m options */
1349                                 const char *opt;
1350                                 char arch_opt[64];
1351
1352                                 GET_ARG_AFTER(opt, "-m");
1353                                 if (strstart(opt, "target=")) {
1354                                         GET_ARG_AFTER(opt, "-mtarget=");
1355                                         if (!parse_target_triple(opt)) {
1356                                                 argument_errors = true;
1357                                         } else {
1358                                                 const char *isa = setup_target_machine();
1359                                                 strncpy(cpu_arch, isa, sizeof(cpu_arch));
1360                                                 target_triple = opt;
1361                                         }
1362                                 } else if (strstart(opt, "triple=")) {
1363                                         GET_ARG_AFTER(opt, "-mtriple=");
1364                                         if (!parse_target_triple(opt)) {
1365                                                 argument_errors = true;
1366                                         } else {
1367                                                 const char *isa = setup_target_machine();
1368                                                 strncpy(cpu_arch, isa, sizeof(cpu_arch));
1369                                                 target_triple = opt;
1370                                         }
1371                                 } else if (strstart(opt, "arch=")) {
1372                                         GET_ARG_AFTER(opt, "-march=");
1373                                         snprintf(arch_opt, sizeof(arch_opt), "%s-arch=%s", cpu_arch, opt);
1374                                         int res = be_parse_arg(arch_opt);
1375                                         snprintf(arch_opt, sizeof(arch_opt), "%s-opt=%s", cpu_arch, opt);
1376                                         res &= be_parse_arg(arch_opt);
1377
1378                                         if (res == 0) {
1379                                                 fprintf(stderr, "Unknown architecture '%s'\n", arch_opt);
1380                                                 argument_errors = true;
1381                                         }
1382                                 } else if (strstart(opt, "tune=")) {
1383                                         GET_ARG_AFTER(opt, "-mtune=");
1384                                         snprintf(arch_opt, sizeof(arch_opt), "%s-opt=%s", cpu_arch, opt);
1385                                         int res = be_parse_arg(arch_opt);
1386                                         if (res == 0)
1387                                                 argument_errors = true;
1388                                 } else if (strstart(opt, "cpu=")) {
1389                                         GET_ARG_AFTER(opt, "-mcpu=");
1390                                         snprintf(arch_opt, sizeof(arch_opt), "%s-arch=%s", cpu_arch, opt);
1391                                         int res = be_parse_arg(arch_opt);
1392                                         if (res == 0)
1393                                                 argument_errors = true;
1394                                 } else if (strstart(opt, "fpmath=")) {
1395                                         GET_ARG_AFTER(opt, "-mfpmath=");
1396                                         if (streq(opt, "387"))
1397                                                 opt = "x87";
1398                                         else if (streq(opt, "sse"))
1399                                                 opt = "sse2";
1400                                         else {
1401                                                 fprintf(stderr, "error: option -mfpmath supports only 387 or sse\n");
1402                                                 argument_errors = true;
1403                                         }
1404                                         if (!argument_errors) {
1405                                                 snprintf(arch_opt, sizeof(arch_opt), "%s-fpunit=%s", cpu_arch, opt);
1406                                                 int res = be_parse_arg(arch_opt);
1407                                                 if (res == 0)
1408                                                         argument_errors = true;
1409                                         }
1410                                 } else if (strstart(opt, "preferred-stack-boundary=")) {
1411                                         GET_ARG_AFTER(opt, "-mpreferred-stack-boundary=");
1412                                         snprintf(arch_opt, sizeof(arch_opt), "%s-stackalign=%s", cpu_arch, opt);
1413                                         int res = be_parse_arg(arch_opt);
1414                                         if (res == 0)
1415                                                 argument_errors = true;
1416                                 } else if (streq(opt, "rtd")) {
1417                                         default_calling_convention = CC_STDCALL;
1418                                 } else if (strstart(opt, "regparm=")) {
1419                                         fprintf(stderr, "error: regparm convention not supported yet\n");
1420                                         argument_errors = true;
1421                                 } else if (streq(opt, "soft-float")) {
1422                                         add_flag(&ldflags_obst, "-msoft-float");
1423                                         snprintf(arch_opt, sizeof(arch_opt), "%s-fpunit=softfloat", cpu_arch);
1424                                         int res = be_parse_arg(arch_opt);
1425                                         if (res == 0)
1426                                                 argument_errors = true;
1427                                 } else if (streq(opt, "sse2")) {
1428                                         /* ignore for now, our x86 backend always uses sse when
1429                                          * sse is requested */
1430                                 } else {
1431                                         long int value = strtol(opt, NULL, 10);
1432                                         if (value == 0) {
1433                                                 fprintf(stderr, "error: wrong option '-m %s'\n",  opt);
1434                                                 argument_errors = true;
1435                                         } else if (value != 16 && value != 32 && value != 64) {
1436                                                 fprintf(stderr, "error: option -m supports only 16, 32 or 64\n");
1437                                                 argument_errors = true;
1438                                         } else {
1439                                                 unsigned machine_size = (unsigned)value;
1440                                                 /* TODO: choose/change backend based on this */
1441                                                 add_flag(&cppflags_obst, "-m%u", machine_size);
1442                                                 add_flag(&asflags_obst, "-m%u", machine_size);
1443                                                 add_flag(&ldflags_obst, "-m%u", machine_size);
1444                                         }
1445                                 }
1446                         } else if (streq(option, "pg")) {
1447                                 set_be_option("gprof");
1448                                 add_flag(&ldflags_obst, "-pg");
1449                         } else if (streq(option, "ansi")) {
1450                                 add_flag(&cppflags_obst, "-ansi");
1451                         } else if (streq(option, "pedantic")) {
1452                                 fprintf(stderr, "warning: ignoring gcc option '%s'\n", arg);
1453                         } else if (strstart(option, "std=")) {
1454                                 const char *const o = &option[4];
1455                                 standard =
1456                                         streq(o, "c++")            ? STANDARD_CXX98   :
1457                                         streq(o, "c++98")          ? STANDARD_CXX98   :
1458                                         streq(o, "c89")            ? STANDARD_C89     :
1459                                         streq(o, "c99")            ? STANDARD_C99     :
1460                                         streq(o, "c9x")            ? STANDARD_C99     : // deprecated
1461                                         streq(o, "gnu++98")        ? STANDARD_GNUXX98 :
1462                                         streq(o, "gnu89")          ? STANDARD_GNU89   :
1463                                         streq(o, "gnu99")          ? STANDARD_GNU99   :
1464                                         streq(o, "gnu9x")          ? STANDARD_GNU99   : // deprecated
1465                                         streq(o, "iso9899:1990")   ? STANDARD_C89     :
1466                                         streq(o, "iso9899:199409") ? STANDARD_C90     :
1467                                         streq(o, "iso9899:1999")   ? STANDARD_C99     :
1468                                         streq(o, "iso9899:199x")   ? STANDARD_C99     : // deprecated
1469                                         (fprintf(stderr, "warning: ignoring gcc option '%s'\n", arg), standard);
1470                         } else if (streq(option, "version")) {
1471                                 print_cparser_version();
1472                                 return EXIT_SUCCESS;
1473                         } else if (streq(option, "dumpversion")) {
1474                                 /* gcc compatibility option */
1475                                 print_cparser_version_short();
1476                                 return EXIT_SUCCESS;
1477                         } else if (strstart(option, "print-file-name=")) {
1478                                 GET_ARG_AFTER(print_file_name_file, "-print-file-name=");
1479                         } else if (option[0] == '-') {
1480                                 /* double dash option */
1481                                 ++option;
1482                                 if (streq(option, "gcc")) {
1483                                         features_on  |=  _GNUC;
1484                                         features_off &= ~_GNUC;
1485                                 } else if (streq(option, "no-gcc")) {
1486                                         features_on  &= ~_GNUC;
1487                                         features_off |=  _GNUC;
1488                                 } else if (streq(option, "ms")) {
1489                                         features_on  |=  _MS;
1490                                         features_off &= ~_MS;
1491                                 } else if (streq(option, "no-ms")) {
1492                                         features_on  &= ~_MS;
1493                                         features_off |=  _MS;
1494                                 } else if (streq(option, "strict")) {
1495                                         strict_mode = true;
1496                                 } else if (streq(option, "lextest")) {
1497                                         mode = LexTest;
1498                                 } else if (streq(option, "benchmark")) {
1499                                         mode = BenchmarkParser;
1500                                 } else if (streq(option, "print-ast")) {
1501                                         mode = PrintAst;
1502                                 } else if (streq(option, "print-implicit-cast")) {
1503                                         print_implicit_casts = true;
1504                                 } else if (streq(option, "print-parenthesis")) {
1505                                         print_parenthesis = true;
1506                                 } else if (streq(option, "print-fluffy")) {
1507                                         mode = PrintFluffy;
1508                                 } else if (streq(option, "print-jna")) {
1509                                         mode = PrintJna;
1510                                 } else if (streq(option, "jna-limit")) {
1511                                         ++i;
1512                                         if (i >= argc) {
1513                                                 fprintf(stderr, "error: "
1514                                                         "expected argument after '--jna-limit'\n");
1515                                                 argument_errors = true;
1516                                                 break;
1517                                         }
1518                                         jna_limit_output(argv[i]);
1519                                 } else if (streq(option, "jna-libname")) {
1520                                         ++i;
1521                                         if (i >= argc) {
1522                                                 fprintf(stderr, "error: "
1523                                                         "expected argument after '--jna-libname'\n");
1524                                                 argument_errors = true;
1525                                                 break;
1526                                         }
1527                                         jna_set_libname(argv[i]);
1528                                 } else if (streq(option, "time")) {
1529                                         do_timing = true;
1530                                 } else if (streq(option, "version")) {
1531                                         print_cparser_version();
1532                                         return EXIT_SUCCESS;
1533                                 } else if (streq(option, "help")) {
1534                                         help |= HELP_BASIC;
1535                                 } else if (streq(option, "help-parser")) {
1536                                         help |= HELP_PARSER;
1537                                 } else if (streq(option, "help-warnings")) {
1538                                         help |= HELP_WARNINGS;
1539                                 } else if (streq(option, "help-codegen")) {
1540                                         help |= HELP_CODEGEN;
1541                                 } else if (streq(option, "help-linker")) {
1542                                         help |= HELP_LINKER;
1543                                 } else if (streq(option, "help-optimization")) {
1544                                         help |= HELP_OPTIMIZATION;
1545                                 } else if (streq(option, "help-language-tools")) {
1546                                         help |= HELP_LANGUAGETOOLS;
1547                                 } else if (streq(option, "help-debug")) {
1548                                         help |= HELP_DEBUG;
1549                                 } else if (streq(option, "help-firm")) {
1550                                         help |= HELP_FIRM;
1551                                 } else if (streq(option, "help-all")) {
1552                                         help |= HELP_ALL;
1553                                 } else if (streq(option, "dump-function")) {
1554                                         ++i;
1555                                         if (i >= argc) {
1556                                                 fprintf(stderr, "error: "
1557                                                         "expected argument after '--dump-function'\n");
1558                                                 argument_errors = true;
1559                                                 break;
1560                                         }
1561                                         dumpfunction = argv[i];
1562                                         mode         = CompileDump;
1563                                 } else if (streq(option, "export-ir")) {
1564                                         mode = CompileExportIR;
1565                                 } else if (streq(option, "unroll-loops")) {
1566                                         /* ignore (gcc compatibility) */
1567                                 } else {
1568                                         fprintf(stderr, "error: unknown argument '%s'\n", arg);
1569                                         argument_errors = true;
1570                                 }
1571                         } else {
1572                                 fprintf(stderr, "error: unknown argument '%s'\n", arg);
1573                                 argument_errors = true;
1574                         }
1575                 } else {
1576                         filetype_t type = forced_filetype;
1577                         if (type == FILETYPE_AUTODETECT) {
1578                                 if (streq(arg, "-")) {
1579                                         /* - implicitly means C source file */
1580                                         type = FILETYPE_C;
1581                                 } else {
1582                                         const char *suffix = strrchr(arg, '.');
1583                                         /* Ensure there is at least one char before the suffix */
1584                                         if (suffix != NULL && suffix != arg) {
1585                                                 ++suffix;
1586                                                 type =
1587                                                         streq(suffix, "S")   ? FILETYPE_ASSEMBLER              :
1588                                                         streq(suffix, "a")   ? FILETYPE_OBJECT                 :
1589                                                         streq(suffix, "c")   ? FILETYPE_C                      :
1590                                                         streq(suffix, "i")   ? FILETYPE_PREPROCESSED_C         :
1591                                                         streq(suffix, "C")   ? FILETYPE_CXX                    :
1592                                                         streq(suffix, "cc")  ? FILETYPE_CXX                    :
1593                                                         streq(suffix, "cp")  ? FILETYPE_CXX                    :
1594                                                         streq(suffix, "cpp") ? FILETYPE_CXX                    :
1595                                                         streq(suffix, "CPP") ? FILETYPE_CXX                    :
1596                                                         streq(suffix, "cxx") ? FILETYPE_CXX                    :
1597                                                         streq(suffix, "c++") ? FILETYPE_CXX                    :
1598                                                         streq(suffix, "ii")  ? FILETYPE_PREPROCESSED_CXX       :
1599                                                         streq(suffix, "h")   ? FILETYPE_C                      :
1600                                                         streq(suffix, "ir")  ? FILETYPE_IR                     :
1601                                                         streq(suffix, "o")   ? FILETYPE_OBJECT                 :
1602                                                         streq(suffix, "s")   ? FILETYPE_PREPROCESSED_ASSEMBLER :
1603                                                         streq(suffix, "so")  ? FILETYPE_OBJECT                 :
1604                                                         FILETYPE_OBJECT; /* gcc behavior: unknown file extension means object file */
1605                                         }
1606                                 }
1607                         }
1608
1609                         file_list_entry_t *entry
1610                                 = obstack_alloc(&file_obst, sizeof(entry[0]));
1611                         memset(entry, 0, sizeof(entry[0]));
1612                         entry->name = arg;
1613                         entry->type = type;
1614
1615                         if (last_file != NULL) {
1616                                 last_file->next = entry;
1617                         } else {
1618                                 files = entry;
1619                         }
1620                         last_file = entry;
1621                 }
1622         }
1623
1624         if (help != HELP_NONE) {
1625                 print_help(argv[0], help);
1626                 return !argument_errors;
1627         }
1628
1629         if (print_file_name_file != NULL) {
1630                 print_file_name(print_file_name_file);
1631                 return EXIT_SUCCESS;
1632         }
1633         if (files == NULL) {
1634                 fprintf(stderr, "error: no input files specified\n");
1635                 argument_errors = true;
1636         }
1637
1638         if (argument_errors) {
1639                 usage(argv[0]);
1640                 return EXIT_FAILURE;
1641         }
1642
1643         /* apply some effects from switches */
1644         c_mode |= features_on;
1645         c_mode &= ~features_off;
1646         if (profile_generate) {
1647                 add_flag(&ldflags_obst, "-lfirmprof");
1648                 set_be_option("profilegenerate");
1649         }
1650         if (profile_use) {
1651                 set_be_option("profileuse");
1652         }
1653
1654         init_symbol_table();
1655         init_types_and_adjust();
1656         init_typehash();
1657         init_basic_types();
1658         if (wchar_atomic_kind == ATOMIC_TYPE_INT)
1659                 init_wchar_types(type_int);
1660         else if (wchar_atomic_kind == ATOMIC_TYPE_USHORT)
1661                 init_wchar_types(type_short);
1662         else
1663                 panic("unexpected wchar type");
1664         init_lexer();
1665         init_ast();
1666         init_parser();
1667         init_ast2firm();
1668         init_mangle();
1669
1670         if (do_timing)
1671                 timer_init();
1672
1673         if (construct_dep_target) {
1674                 if (outname != 0 && strlen(outname) >= 2) {
1675                         get_output_name(dep_target, sizeof(dep_target), outname, ".d");
1676                 } else {
1677                         get_output_name(dep_target, sizeof(dep_target), files->name, ".d");
1678                 }
1679         } else {
1680                 dep_target[0] = '\0';
1681         }
1682
1683         char outnamebuf[4096];
1684         if (outname == NULL) {
1685                 const char *filename = files->name;
1686
1687                 switch(mode) {
1688                 case BenchmarkParser:
1689                 case PrintAst:
1690                 case PrintFluffy:
1691                 case PrintJna:
1692                 case LexTest:
1693                 case PreprocessOnly:
1694                 case ParseOnly:
1695                         outname = "-";
1696                         break;
1697                 case Compile:
1698                         get_output_name(outnamebuf, sizeof(outnamebuf), filename, ".s");
1699                         outname = outnamebuf;
1700                         break;
1701                 case CompileAssemble:
1702                         get_output_name(outnamebuf, sizeof(outnamebuf), filename, ".o");
1703                         outname = outnamebuf;
1704                         break;
1705                 case CompileDump:
1706                         get_output_name(outnamebuf, sizeof(outnamebuf), dumpfunction,
1707                                         ".vcg");
1708                         outname = outnamebuf;
1709                         break;
1710                 case CompileExportIR:
1711                         get_output_name(outnamebuf, sizeof(outnamebuf), filename, ".ir");
1712                         outname = outnamebuf;
1713                         break;
1714                 case CompileAssembleLink:
1715 #ifdef _WIN32
1716                         outname = "a.exe";
1717 #else
1718                         outname = "a.out";
1719 #endif
1720                         break;
1721                 }
1722         }
1723
1724         assert(outname != NULL);
1725
1726         FILE *out;
1727         if (streq(outname, "-")) {
1728                 out = stdout;
1729         } else {
1730                 out = fopen(outname, "w");
1731                 if (out == NULL) {
1732                         fprintf(stderr, "Could not open '%s' for writing: %s\n", outname,
1733                                         strerror(errno));
1734                         return EXIT_FAILURE;
1735                 }
1736         }
1737
1738         file_list_entry_t *file;
1739         bool               already_constructed_firm = false;
1740         for (file = files; file != NULL; file = file->next) {
1741                 char        asm_tempfile[1024];
1742                 const char *filename = file->name;
1743                 filetype_t  filetype = file->type;
1744
1745                 if (filetype == FILETYPE_OBJECT)
1746                         continue;
1747
1748                 FILE *in = NULL;
1749                 if (mode == LexTest) {
1750                         if (in == NULL)
1751                                 in = open_file(filename);
1752                         lextest(in, filename);
1753                         fclose(in);
1754                         return EXIT_SUCCESS;
1755                 }
1756
1757                 FILE *preprocessed_in = NULL;
1758                 filetype_t next_filetype = filetype;
1759                 switch (filetype) {
1760                         case FILETYPE_C:
1761                                 next_filetype = FILETYPE_PREPROCESSED_C;
1762                                 goto preprocess;
1763                         case FILETYPE_CXX:
1764                                 next_filetype = FILETYPE_PREPROCESSED_CXX;
1765                                 goto preprocess;
1766                         case FILETYPE_ASSEMBLER:
1767                                 next_filetype = FILETYPE_PREPROCESSED_ASSEMBLER;
1768                                 goto preprocess;
1769 preprocess:
1770                                 /* no support for input on FILE* yet */
1771                                 if (in != NULL)
1772                                         panic("internal compiler error: in for preprocessor != NULL");
1773
1774                                 preprocessed_in = preprocess(filename, filetype);
1775                                 if (mode == PreprocessOnly) {
1776                                         copy_file(out, preprocessed_in);
1777                                         int pp_result = pclose(preprocessed_in);
1778                                         fclose(out);
1779                                         /* remove output file in case of error */
1780                                         if (out != stdout && pp_result != EXIT_SUCCESS) {
1781                                                 unlink(outname);
1782                                         }
1783                                         return pp_result;
1784                                 }
1785
1786                                 in = preprocessed_in;
1787                                 filetype = next_filetype;
1788                                 break;
1789
1790                         default:
1791                                 break;
1792                 }
1793
1794                 FILE *asm_out;
1795                 if (mode == Compile) {
1796                         asm_out = out;
1797                 } else {
1798                         asm_out = make_temp_file(asm_tempfile, sizeof(asm_tempfile), "ccs");
1799                 }
1800
1801                 if (in == NULL)
1802                         in = open_file(filename);
1803
1804                 /* preprocess and compile */
1805                 if (filetype == FILETYPE_PREPROCESSED_C) {
1806                         char const* invalid_mode;
1807                         switch (standard) {
1808                                 case STANDARD_ANSI:
1809                                 case STANDARD_C89:   c_mode = _C89;                break;
1810                                 /* TODO determine difference between these two */
1811                                 case STANDARD_C90:   c_mode = _C89;                break;
1812                                 case STANDARD_C99:   c_mode = _C89 | _C99;         break;
1813                                 case STANDARD_GNU89: c_mode = _C89 |        _GNUC; break;
1814
1815 default_c_warn:
1816                                         fprintf(stderr,
1817                                                         "warning: command line option \"-std=%s\" is not valid for C\n",
1818                                                         invalid_mode);
1819                                         /* FALLTHROUGH */
1820                                 case STANDARD_DEFAULT:
1821                                 case STANDARD_GNU99:   c_mode = _C89 | _C99 | _GNUC; break;
1822
1823                                 case STANDARD_CXX98:   invalid_mode = "c++98"; goto default_c_warn;
1824                                 case STANDARD_GNUXX98: invalid_mode = "gnu98"; goto default_c_warn;
1825                         }
1826                         goto do_parsing;
1827                 } else if (filetype == FILETYPE_PREPROCESSED_CXX) {
1828                         char const* invalid_mode;
1829                         switch (standard) {
1830                                 case STANDARD_C89:   invalid_mode = "c89";   goto default_cxx_warn;
1831                                 case STANDARD_C90:   invalid_mode = "c90";   goto default_cxx_warn;
1832                                 case STANDARD_C99:   invalid_mode = "c99";   goto default_cxx_warn;
1833                                 case STANDARD_GNU89: invalid_mode = "gnu89"; goto default_cxx_warn;
1834                                 case STANDARD_GNU99: invalid_mode = "gnu99"; goto default_cxx_warn;
1835
1836                                 case STANDARD_ANSI:
1837                                 case STANDARD_CXX98: c_mode = _CXX; break;
1838
1839 default_cxx_warn:
1840                                         fprintf(stderr,
1841                                                         "warning: command line option \"-std=%s\" is not valid for C++\n",
1842                                                         invalid_mode);
1843                                 case STANDARD_DEFAULT:
1844                                 case STANDARD_GNUXX98: c_mode = _CXX | _GNUC; break;
1845                         }
1846
1847 do_parsing:
1848                         c_mode |= features_on;
1849                         c_mode &= ~features_off;
1850
1851                         /* do the actual parsing */
1852                         ir_timer_t *t_parsing = ir_timer_new();
1853                         timer_register(t_parsing, "Frontend: Parsing");
1854                         timer_push(t_parsing);
1855                         init_tokens();
1856                         translation_unit_t *const unit = do_parsing(in, filename);
1857                         timer_pop(t_parsing);
1858
1859                         /* prints the AST even if errors occurred */
1860                         if (mode == PrintAst) {
1861                                 print_to_file(out);
1862                                 print_ast(unit);
1863                         }
1864
1865                         if (error_count > 0) {
1866                                 /* parsing failed because of errors */
1867                                 fprintf(stderr, "%u error(s), %u warning(s)\n", error_count,
1868                                         warning_count);
1869                                 result = EXIT_FAILURE;
1870                                 continue;
1871                         } else if (warning_count > 0) {
1872                                 fprintf(stderr, "%u warning(s)\n", warning_count);
1873                         }
1874
1875                         if (in == preprocessed_in) {
1876                                 int pp_result = pclose(preprocessed_in);
1877                                 if (pp_result != EXIT_SUCCESS) {
1878                                         /* remove output file */
1879                                         if (out != stdout)
1880                                                 unlink(outname);
1881                                         return EXIT_FAILURE;
1882                                 }
1883                         }
1884
1885                         if (mode == BenchmarkParser) {
1886                                 return result;
1887                         } else if (mode == PrintFluffy) {
1888                                 write_fluffy_decls(out, unit);
1889                                 continue;
1890                         } else if (mode == PrintJna) {
1891                                 write_jna_decls(out, unit);
1892                                 continue;
1893                         }
1894
1895                         /* build the firm graph */
1896                         ir_timer_t *t_construct = ir_timer_new();
1897                         timer_register(t_construct, "Frontend: Graph construction");
1898                         timer_push(t_construct);
1899                         if (already_constructed_firm) {
1900                                 panic("compiling multiple files/translation units not possible");
1901                         }
1902                         init_implicit_optimizations();
1903                         translation_unit_to_firm(unit);
1904                         already_constructed_firm = true;
1905                         timer_pop(t_construct);
1906
1907 graph_built:
1908                         if (mode == ParseOnly) {
1909                                 continue;
1910                         }
1911
1912                         if (mode == CompileDump) {
1913                                 /* find irg */
1914                                 ident    *id     = new_id_from_str(dumpfunction);
1915                                 ir_graph *irg    = NULL;
1916                                 int       n_irgs = get_irp_n_irgs();
1917                                 for (int i = 0; i < n_irgs; ++i) {
1918                                         ir_graph *tirg   = get_irp_irg(i);
1919                                         ident    *irg_id = get_entity_ident(get_irg_entity(tirg));
1920                                         if (irg_id == id) {
1921                                                 irg = tirg;
1922                                                 break;
1923                                         }
1924                                 }
1925
1926                                 if (irg == NULL) {
1927                                         fprintf(stderr, "No graph for function '%s' found\n",
1928                                                 dumpfunction);
1929                                         return EXIT_FAILURE;
1930                                 }
1931
1932                                 dump_ir_graph_file(out, irg);
1933                                 fclose(out);
1934                                 return EXIT_SUCCESS;
1935                         }
1936
1937                         if (mode == CompileExportIR) {
1938                                 ir_export_file(out);
1939                                 if (ferror(out) != 0) {
1940                                         fprintf(stderr, "Error while writing to output\n");
1941                                         return EXIT_FAILURE;
1942                                 }
1943                                 return EXIT_SUCCESS;
1944                         }
1945
1946                         generate_code(asm_out, filename);
1947                         if (asm_out != out) {
1948                                 fclose(asm_out);
1949                         }
1950                 } else if (filetype == FILETYPE_IR) {
1951                         fclose(in);
1952                         int res = ir_import(filename);
1953                         if (res != 0) {
1954                                 fprintf(stderr, "Firm-Program import failed\n");
1955                                 return EXIT_FAILURE;
1956                         }
1957                         goto graph_built;
1958                 } else if (filetype == FILETYPE_PREPROCESSED_ASSEMBLER) {
1959                         copy_file(asm_out, in);
1960                         if (in == preprocessed_in) {
1961                                 int pp_result = pclose(preprocessed_in);
1962                                 if (pp_result != EXIT_SUCCESS) {
1963                                         /* remove output in error case */
1964                                         if (out != stdout)
1965                                                 unlink(outname);
1966                                         return pp_result;
1967                                 }
1968                         }
1969                         if (asm_out != out) {
1970                                 fclose(asm_out);
1971                         }
1972                 }
1973
1974                 if (mode == Compile)
1975                         continue;
1976
1977                 /* if we're here then we have preprocessed assembly */
1978                 filename = asm_tempfile;
1979                 filetype = FILETYPE_PREPROCESSED_ASSEMBLER;
1980
1981                 /* assemble */
1982                 if (filetype == FILETYPE_PREPROCESSED_ASSEMBLER) {
1983                         char        temp[1024];
1984                         const char *filename_o;
1985                         if (mode == CompileAssemble) {
1986                                 fclose(out);
1987                                 filename_o = outname;
1988                         } else {
1989                                 FILE *tempf = make_temp_file(temp, sizeof(temp), "cco");
1990                                 fclose(tempf);
1991                                 filename_o = temp;
1992                         }
1993
1994                         assemble(filename_o, filename);
1995
1996                         size_t len = strlen(filename_o) + 1;
1997                         filename = obstack_copy(&file_obst, filename_o, len);
1998                         filetype = FILETYPE_OBJECT;
1999                 }
2000
2001                 /* ok we're done here, process next file */
2002                 file->name = filename;
2003                 file->type = filetype;
2004         }
2005
2006         if (result != EXIT_SUCCESS) {
2007                 if (out != stdout)
2008                         unlink(outname);
2009                 return result;
2010         }
2011
2012         /* link program file */
2013         if (mode == CompileAssembleLink) {
2014                 obstack_1grow(&ldflags_obst, '\0');
2015                 const char *flags = obstack_finish(&ldflags_obst);
2016
2017                 /* construct commandline */
2018                 const char *linker = getenv("CPARSER_LINK");
2019                 if (linker != NULL) {
2020                         obstack_printf(&file_obst, "%s ", linker);
2021                 } else {
2022                         if (target_triple != NULL)
2023                                 obstack_printf(&file_obst, "%s-", target_triple);
2024                         obstack_printf(&file_obst, "%s ", LINKER);
2025                 }
2026
2027                 for (file_list_entry_t *entry = files; entry != NULL;
2028                                 entry = entry->next) {
2029                         if (entry->type != FILETYPE_OBJECT)
2030                                 continue;
2031
2032                         add_flag(&file_obst, "%s", entry->name);
2033                 }
2034
2035                 add_flag(&file_obst, "-o");
2036                 add_flag(&file_obst, outname);
2037                 obstack_printf(&file_obst, "%s", flags);
2038                 obstack_1grow(&file_obst, '\0');
2039
2040                 char *commandline = obstack_finish(&file_obst);
2041
2042                 if (verbose) {
2043                         puts(commandline);
2044                 }
2045                 int err = system(commandline);
2046                 if (err != EXIT_SUCCESS) {
2047                         fprintf(stderr, "linker reported an error\n");
2048                         return EXIT_FAILURE;
2049                 }
2050         }
2051
2052         if (do_timing)
2053                 timer_term(stderr);
2054
2055         obstack_free(&cppflags_obst, NULL);
2056         obstack_free(&ldflags_obst, NULL);
2057         obstack_free(&asflags_obst, NULL);
2058         obstack_free(&file_obst, NULL);
2059
2060         gen_firm_finish();
2061         exit_mangle();
2062         exit_ast2firm();
2063         exit_parser();
2064         exit_ast();
2065         exit_lexer();
2066         exit_typehash();
2067         exit_types();
2068         exit_tokens();
2069         exit_symbol_table();
2070         return EXIT_SUCCESS;
2071 }