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
 121 typedef enum lang_standard_t {
 122         STANDARD_DEFAULT, /* gnu99 (for C, GCC does gnu89) or gnu++98 (for C++) */
 123         STANDARD_ANSI,    /* c89 (for C) or c++98 (for C++) */
 124         STANDARD_C89,     /* ISO C90 (sic) */
 125         STANDARD_C90,     /* ISO C90 as modified in amendment 1 */
 126         STANDARD_C99,     /* ISO C99 */
 127         STANDARD_GNU89,   /* ISO C90 plus GNU extensions (including some C99) */
 128         STANDARD_GNU99,   /* ISO C99 plus GNU extensions */
 129         STANDARD_CXX98,   /* ISO C++ 1998 plus amendments */
 130         STANDARD_GNUXX98  /* ISO C++ 1998 plus amendments and GNU extensions */
 131 } lang_standard_t;
 132
 133 static lang_standard_t standard;
 134
 135 typedef struct file_list_entry_t file_list_entry_t;
 136
 137 typedef enum filetype_t {
 138         FILETYPE_AUTODETECT,
 139         FILETYPE_C,
 140         FILETYPE_PREPROCESSED_C,
 141         FILETYPE_CXX,
 142         FILETYPE_PREPROCESSED_CXX,
 143         FILETYPE_ASSEMBLER,
 144         FILETYPE_PREPROCESSED_ASSEMBLER,
 145         FILETYPE_OBJECT,
 146         FILETYPE_IR,
 147         FILETYPE_UNKNOWN
 148 } filetype_t;
 149
 150 struct file_list_entry_t {
 151         const char  *name; /**< filename or NULL for stdin */
 152         filetype_t   type;
 153         file_list_entry_t *next;
 154 };
 155
 156 static file_list_entry_t *temp_files;
 157
 158 static void get_output_name(char *buf, size_t buflen, const char *inputname,
 159                             const char *newext)
 160 {
 161         if (inputname == NULL)
 162                 inputname = "a";
 163
 164         char const *const last_slash = strrchr(inputname, '/');
 165         char const *const filename   =
 166                 last_slash != NULL ? last_slash + 1 : inputname;
 167         char const *const last_dot   = strrchr(filename, '.');
 168         char const *const name_end   =
 169                 last_dot != NULL ? last_dot : strchr(filename, '\0');
 170
 171         int const len = snprintf(buf, buflen, "%.*s%s",
 172                         (int)(name_end - filename), filename, newext);
 173 #ifdef _WIN32
 174         if (len < 0 || buflen <= (size_t)len)
 175 #else
 176         if (buflen <= (size_t)len)
 177 #endif
 178                 panic("filename too long");
 179 }
 180
 181 static translation_unit_t *do_parsing(FILE *const in, const char *const input_name)
 182 {
 183         start_parsing();
 184
 185         lexer_open_stream(in, input_name);
 186         parse();
 187
 188         translation_unit_t *unit = finish_parsing();
 189         return unit;
 190 }
 191
 192 static void lextest(FILE *in, const char *fname)
 193 {
 194         lexer_open_stream(in, fname);
 195
 196         do {
 197                 lexer_next_preprocessing_token();
 198                 print_token(stdout, &lexer_token);
 199                 putchar('\n');
 200         } while (lexer_token.kind != T_EOF);
 201 }
 202
 203 static void add_flag(struct obstack *obst, const char *format, ...)
 204 {
 205         char buf[65536];
 206         va_list ap;
 207
 208         va_start(ap, format);
 209 #ifdef _WIN32
 210         int len =
 211 #endif
 212                 vsnprintf(buf, sizeof(buf), format, ap);
 213         va_end(ap);
 214
 215         obstack_1grow(obst, ' ');
 216 #ifdef _WIN32
 217         obstack_1grow(obst, '"');
 218         obstack_grow(obst, buf, len);
 219         obstack_1grow(obst, '"');
 220 #else
 221         /* escape stuff... */
 222         for (char *c = buf; *c != '\0'; ++c) {
 223                 switch(*c) {
 224                 case ' ':
 225                 case '"':
 226                 case '$':
 227                 case '&':
 228                 case '(':
 229                 case ')':
 230                 case ';':
 231                 case '<':
 232                 case '>':
 233                 case '\'':
 234                 case '\\':
 235                 case '\n':
 236                 case '\r':
 237                 case '\t':
 238                 case '`':
 239                 case '|':
 240                         obstack_1grow(obst, '\\');
 241                         /* FALLTHROUGH */
 242                 default:
 243                         obstack_1grow(obst, *c);
 244                         break;
 245                 }
 246         }
 247 #endif
 248 }
 249
 250 static const char *type_to_string(type_t *type)
 251 {
 252         assert(type->kind == TYPE_ATOMIC);
 253         return get_atomic_kind_name(type->atomic.akind);
 254 }
 255
 256 static FILE *preprocess(const char *fname, filetype_t filetype)
 257 {
 258         static const char *common_flags = NULL;
 259
 260         if (common_flags == NULL) {
 261                 obstack_1grow(&cppflags_obst, '\0');
 262                 const char *flags = obstack_finish(&cppflags_obst);
 263
 264                 /* setup default defines */
 265                 add_flag(&cppflags_obst, "-U__WCHAR_TYPE__");
 266                 add_flag(&cppflags_obst, "-D__WCHAR_TYPE__=%s", type_to_string(type_wchar_t));
 267                 add_flag(&cppflags_obst, "-U__SIZE_TYPE__");
 268                 add_flag(&cppflags_obst, "-D__SIZE_TYPE__=%s", type_to_string(type_size_t));
 269
 270                 add_flag(&cppflags_obst, "-U__VERSION__");
 271                 add_flag(&cppflags_obst, "-D__VERSION__=\"%s\"", cparser_REVISION);
 272
 273                 if (define_intmax_types) {
 274                         add_flag(&cppflags_obst, "-U__INTMAX_TYPE__");
 275                         add_flag(&cppflags_obst, "-D__INTMAX_TYPE__=%s", type_to_string(type_intmax_t));
 276                         add_flag(&cppflags_obst, "-U__UINTMAX_TYPE__");
 277                         add_flag(&cppflags_obst, "-D__UINTMAX_TYPE__=%s", type_to_string(type_uintmax_t));
 278                 }
 279
 280                 if (flags[0] != '\0') {
 281                         size_t len = strlen(flags);
 282                         obstack_1grow(&cppflags_obst, ' ');
 283                         obstack_grow(&cppflags_obst, flags, len);
 284                 }
 285                 obstack_1grow(&cppflags_obst, '\0');
 286                 common_flags = obstack_finish(&cppflags_obst);
 287         }
 288
 289         assert(obstack_object_size(&cppflags_obst) == 0);
 290
 291         const char *preprocessor = getenv("CPARSER_PP");
 292         if (preprocessor != NULL) {
 293                 obstack_printf(&cppflags_obst, "%s ", preprocessor);
 294         } else {
 295                 if (target_triple != NULL)
 296                         obstack_printf(&cppflags_obst, "%s-", target_triple);
 297                 obstack_printf(&cppflags_obst, PREPROCESSOR);
 298         }
 299
 300         switch (filetype) {
 301         case FILETYPE_C:
 302                 add_flag(&cppflags_obst, "-std=c99");
 303                 break;
 304         case FILETYPE_CXX:
 305                 add_flag(&cppflags_obst, "-std=c++98");
 306                 break;
 307         case FILETYPE_ASSEMBLER:
 308                 add_flag(&cppflags_obst, "-x");
 309                 add_flag(&cppflags_obst, "assembler-with-cpp");
 310                 break;
 311         default:
 312                 break;
 313         }
 314         obstack_printf(&cppflags_obst, "%s", common_flags);
 315
 316         /* handle dependency generation */
 317         if (dep_target[0] != '\0') {
 318                 add_flag(&cppflags_obst, "-MF");
 319                 add_flag(&cppflags_obst, dep_target);
 320                 if (outname != NULL) {
 321                                 add_flag(&cppflags_obst, "-MQ");
 322                                 add_flag(&cppflags_obst, outname);
 323                 }
 324         }
 325         add_flag(&cppflags_obst, fname);
 326         obstack_1grow(&cppflags_obst, '\0');
 327
 328         char *commandline = obstack_finish(&cppflags_obst);
 329         if (verbose) {
 330                 puts(commandline);
 331         }
 332         FILE *f = popen(commandline, "r");
 333         if (f == NULL) {
 334                 fprintf(stderr, "invoking preprocessor failed\n");
 335                 exit(EXIT_FAILURE);
 336         }
 337         /* we do not really need that anymore */
 338         obstack_free(&cppflags_obst, commandline);
 339
 340         return f;
 341 }
 342
 343 static void assemble(const char *out, const char *in)
 344 {
 345         obstack_1grow(&asflags_obst, '\0');
 346         const char *flags = obstack_finish(&asflags_obst);
 347
 348         const char *assembler = getenv("CPARSER_AS");
 349         if (assembler != NULL) {
 350                 obstack_printf(&asflags_obst, "%s", assembler);
 351         } else {
 352                 if (target_triple != NULL)
 353                         obstack_printf(&asflags_obst, "%s-", target_triple);
 354                 obstack_printf(&asflags_obst, "%s", ASSEMBLER);
 355         }
 356         if (flags[0] != '\0')
 357                 obstack_printf(&asflags_obst, " %s", flags);
 358
 359         obstack_printf(&asflags_obst, " %s -o %s", in, out);
 360         obstack_1grow(&asflags_obst, '\0');
 361
 362         char *commandline = obstack_finish(&asflags_obst);
 363         if (verbose) {
 364                 puts(commandline);
 365         }
 366         int err = system(commandline);
 367         if (err != EXIT_SUCCESS) {
 368                 fprintf(stderr, "assembler reported an error\n");
 369                 exit(EXIT_FAILURE);
 370         }
 371         obstack_free(&asflags_obst, commandline);
 372 }
 373
 374 static void print_file_name(const char *file)
 375 {
 376         add_flag(&ldflags_obst, "-print-file-name=%s", file);
 377
 378         obstack_1grow(&ldflags_obst, '\0');
 379         const char *flags = obstack_finish(&ldflags_obst);
 380
 381         /* construct commandline */
 382         const char *linker = getenv("CPARSER_LINK");
 383         if (linker != NULL) {
 384                 obstack_printf(&ldflags_obst, "%s ", linker);
 385         } else {
 386                 if (target_triple != NULL)
 387                         obstack_printf(&ldflags_obst, "%s-", target_triple);
 388                 obstack_printf(&ldflags_obst, "%s ", LINKER);
 389         }
 390         obstack_printf(&ldflags_obst, "%s ", linker);
 391         obstack_printf(&ldflags_obst, "%s", flags);
 392         obstack_1grow(&ldflags_obst, '\0');
 393
 394         char *commandline = obstack_finish(&ldflags_obst);
 395         if (verbose) {
 396                 puts(commandline);
 397         }
 398         int err = system(commandline);
 399         if (err != EXIT_SUCCESS) {
 400                 fprintf(stderr, "linker reported an error\n");
 401                 exit(EXIT_FAILURE);
 402         }
 403         obstack_free(&ldflags_obst, commandline);
 404 }
 405
 406 static const char *try_dir(const char *dir)
 407 {
 408         if (dir == NULL)
 409                 return dir;
 410         if (access(dir, R_OK | W_OK | X_OK) == 0)
 411                 return dir;
 412         return NULL;
 413 }
 414
 415 static const char *get_tempdir(void)
 416 {
 417         static const char *tmpdir = NULL;
 418
 419         if (tmpdir != NULL)
 420                 return tmpdir;
 421
 422         if (tmpdir == NULL)
 423                 tmpdir = try_dir(getenv("TMPDIR"));
 424         if (tmpdir == NULL)
 425                 tmpdir = try_dir(getenv("TMP"));
 426         if (tmpdir == NULL)
 427                 tmpdir = try_dir(getenv("TEMP"));
 428
 429 #ifdef P_tmpdir
 430         if (tmpdir == NULL)
 431                 tmpdir = try_dir(P_tmpdir);
 432 #endif
 433
 434         if (tmpdir == NULL)
 435                 tmpdir = try_dir("/var/tmp");
 436         if (tmpdir == NULL)
 437                 tmpdir = try_dir("/usr/tmp");
 438         if (tmpdir == NULL)
 439                 tmpdir = try_dir("/tmp");
 440
 441         if (tmpdir == NULL)
 442                 tmpdir = ".";
 443
 444         return tmpdir;
 445 }
 446
 447 #ifndef HAVE_MKSTEMP
 448 /* cheap and nasty mkstemp replacement */
 449 static int mkstemp(char *templ)
 450 {
 451         mktemp(templ);
 452         return open(templ, O_RDWR|O_CREAT|O_EXCL|O_BINARY, 0600);
 453 }
 454 #endif
 455
 456 /**
 457  * an own version of tmpnam, which: writes in a buffer, emits no warnings
 458  * during linking (like glibc/gnu ld do for tmpnam)...
 459  */
 460 static FILE *make_temp_file(char *buffer, size_t buflen, const char *prefix)
 461 {
 462         const char *tempdir = get_tempdir();
 463
 464         snprintf(buffer, buflen, "%s/%sXXXXXX", tempdir, prefix);
 465
 466         int fd = mkstemp(buffer);
 467         if (fd == -1) {
 468                 fprintf(stderr, "could not create temporary file: %s\n",
 469                         strerror(errno));
 470                 exit(EXIT_FAILURE);
 471         }
 472         FILE *out = fdopen(fd, "w");
 473         if (out == NULL) {
 474                 fprintf(stderr, "could not create temporary file FILE*\n");
 475                 exit(EXIT_FAILURE);
 476         }
 477
 478         file_list_entry_t *entry = xmalloc(sizeof(*entry));
 479         memset(entry, 0, sizeof(*entry));
 480
 481         size_t  name_len = strlen(buffer) + 1;
 482         char   *name     = malloc(name_len);
 483         memcpy(name, buffer, name_len);
 484         entry->name      = name;
 485
 486         entry->next = temp_files;
 487         temp_files  = entry;
 488
 489         return out;
 490 }
 491
 492 static void free_temp_files(void)
 493 {
 494         file_list_entry_t *entry = temp_files;
 495         file_list_entry_t *next;
 496         for ( ; entry != NULL; entry = next) {
 497                 next = entry->next;
 498
 499                 unlink(entry->name);
 500                 free((char*) entry->name);
 501                 free(entry);
 502         }
 503         temp_files = NULL;
 504 }
 505
 506 typedef enum compile_mode_t {
 507         BenchmarkParser,
 508         PreprocessOnly,
 509         ParseOnly,
 510         Compile,
 511         CompileDump,
 512         CompileExportIR,
 513         CompileAssemble,
 514         CompileAssembleLink,
 515         LexTest,
 516         PrintAst,
 517         PrintFluffy,
 518         PrintJna
 519 } compile_mode_t;
 520
 521 static void usage(const char *argv0)
 522 {
 523         fprintf(stderr, "Usage %s [options] input [-o output]\n", argv0);
 524 }
 525
 526 static void print_cparser_version(void)
 527 {
 528         printf("cparser (%s) using libFirm (%u.%u",
 529                cparser_REVISION, ir_get_version_major(),
 530                ir_get_version_minor());
 531
 532         const char *revision = ir_get_version_revision();
 533         if (revision[0] != 0) {
 534                 putchar(' ');
 535                 fputs(revision, stdout);
 536         }
 537
 538         const char *build = ir_get_version_build();
 539         if (build[0] != 0) {
 540                 putchar(' ');
 541                 fputs(build, stdout);
 542         }
 543         puts(")");
 544         puts("This is free software; see the source for copying conditions.  There is NO\n"
 545              "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n");
 546 }
 547
 548 static void print_help_basic(const char *argv0)
 549 {
 550         usage(argv0);
 551         puts("");
 552         put_help("--help",                   "Display this information");
 553         put_help("--version",                "Display compiler version");
 554         put_help("--help-parser",            "Display information about parser options");
 555         put_help("--help-warnings",          "Display information about warning options");
 556         put_help("--help-codegen",           "Display information about code-generation options");
 557         put_help("--help-optimization",      "Display information about optimization options");
 558         put_help("--help-linker",            "Display information about linker options");
 559         put_help("--help-language-tools",    "Display information about language tools options");
 560         put_help("--help-debug",             "Display information about compiler debugging options");
 561         put_help("--help-firm",              "Display information about direct firm options");
 562         put_help("--help-all",               "Display information about all options");
 563         put_help("-c",                       "Compile and assemble but do not link");
 564         put_help("-E",                       "Preprocess only");
 565         put_help("-S",                       "Compile but do not assembler or link");
 566         put_help("-o",                       "Specify output file");
 567         put_help("-v",                       "Verbose output (show invocation of sub-processes)");
 568         put_help("-x",                       "Force input language:");
 569         put_choice("c",                      "C");
 570         put_choice("c++",                    "C++");
 571         put_choice("assembler",              "Assembler (no preprocessing)");
 572         put_choice("assembler-with-cpp",     "Assembler with preprocessing");
 573         put_choice("none",                   "Autodetection");
 574         put_help("-pipe",                    "Ignored (gcc compatibility)");
 575 }
 576
 577 static void print_help_preprocessor(void)
 578 {
 579         put_help("-nostdinc",                "Do not search standard system include directories");
 580         put_help("-trigraphs",               "Support ISO C trigraphs");
 581         put_help("-isystem",                 "");
 582         put_help("-include",                 "");
 583         put_help("-I PATH",                  "");
 584         put_help("-D SYMBOL[=value]",        "");
 585         put_help("-U SYMBOL",                "");
 586         put_help("-Wp,OPTION",               "Pass option directly to preprocessor");
 587         put_help("-M",                       "");
 588         put_help("-MD",                      "");
 589         put_help("-MMD",                     "");
 590         put_help("-MM",                      "");
 591         put_help("-MP",                      "");
 592         put_help("-MT",                      "");
 593         put_help("-MQ",                      "");
 594         put_help("-MF",                      "");
 595 }
 596
 597 static void print_help_parser(void)
 598 {
 599         put_help("-finput-charset=CHARSET",  "Select encoding of input files");
 600         put_help("-fmessage-length=LEN",     "Ignored (gcc compatibility)");
 601         put_help("-fshort-wchar",            "Type \"wchar_t\" is unsigned short instead of int");
 602         put_help("-fshow-column",            "Show the column number in diagnostic messages");
 603         put_help("-fsigned-char",            "Type \"char\" is a signed type");
 604         put_help("-funsigned-char",          "Type \"char\" is an unsigned type");
 605         put_help("--ms",                     "Enable msvc extensions");
 606         put_help("--no-ms",                  "Disable msvc extensions");
 607         put_help("--gcc",                    "Enable gcc extensions");
 608         put_help("--no-gcc",                 "Disable gcc extensions");
 609         put_help("-std=STANDARD",            "Specify language standard:");
 610         put_choice("c99",                    "ISO C99 standard");
 611         put_choice("c89",                    "ISO C89 standard");
 612         put_choice("c9x",                    "Deprecated");
 613         put_choice("c++",                    "ISO C++ 98");
 614         put_choice("c++98",                  "ISO C++ 98");
 615         put_choice("gnu99",                  "ISO C99 + GNU extensions (default)");
 616         put_choice("gnu89",                  "ISO C89 + GNU extensions");
 617         put_choice("gnu9x",                  "Deprecated");
 618         put_choice("iso9899:1990",           "ISO C89");
 619         put_choice("iso9899:199409",         "ISO C90");
 620         put_choice("iso9899:1999",           "ISO C99");
 621         put_choice("iso9899:199x",           "Deprecated");
 622         put_help("-pedantic",                "Ignored (gcc compatibility)");
 623         put_help("-ansi",                    "Ignored (gcc compatibility)");
 624         put_help("--strict",                 "Enable strict conformance checking");
 625 }
 626
 627 static void print_help_warnings(void)
 628 {
 629         put_help("-f[no-]diagnostics-show-option", "Show the switch, which controls a warning, after each warning");
 630         put_help("-w",                             "Disable all warnings");
 631         put_help("-Wno-trigraphs",                 "Warn if input contains trigraphs");
 632         put_help("-Wundef",                        "Warn if an undefined macro is used in an #if");
 633         put_help("-Winit-self",                    "Ignored (gcc compatibility)");
 634         print_warning_opt_help();
 635 }
 636
 637 static void print_help_optimization(void)
 638 {
 639         put_help("-O LEVEL",                 "Select optimization level (0-4)");
 640         firm_option_help(put_help);
 641         put_help("-fexpensive-optimizations","Ignored (gcc compatibility)");
 642 }
 643
 644 static void print_help_codegeneration(void)
 645 {
 646         put_help("-g",                       "Generate debug information");
 647         put_help("-pg",                      "Instrument code for gnu gprof");
 648         put_help("-fomit-frame-pointer",     "Produce code without frame pointer where possible");
 649         put_help("-ffreestanding",           "Compile in freestanding mode (see ISO C standard)");
 650         put_help("-fhosted",                 "Compile in hosted (not freestanding) mode");
 651         put_help("-fprofile-generate",       "Generate instrumented code to collect profile information");
 652         put_help("-fprofile-use",            "Use profile information generated by instrumented binaries");
 653         put_help("-ffp-precise",             "Precise floating point model");
 654         put_help("-ffp-fast",                "Imprecise floating point model");
 655         put_help("-ffp-strict",              "Strict floating point model");
 656         put_help("-pthread",                 "Use pthread threading library");
 657         put_help("-mtarget=TARGET",          "Specify target architecture as CPU-manufacturer-OS triple");
 658         put_help("-mtriple=TARGET",          "Alias for -mtarget (clang compatibility)");
 659         put_help("-march=ARCH",              "");
 660         put_help("-mtune=ARCH",              "");
 661         put_help("-mcpu=CPU",                "");
 662         put_help("-mfpmath=",                "");
 663         put_help("-mpreferred-stack-boundary=", "");
 664         put_help("-mrtd",                    "");
 665         put_help("-mregparm=",               "Not supported yet");
 666         put_help("-msoft-float",             "Not supported yet");
 667         put_help("-m32",                     "Generate 32bit code");
 668         put_help("-m64",                     "Generate 64bit code");
 669         put_help("-fverbose-asm",            "Ignored (gcc compatibility)");
 670         put_help("-fjump-tables",            "Ignored (gcc compatibility)");
 671         put_help("-fcommon",                 "Ignored (gcc compatibility)");
 672         put_help("-foptimize-sibling-calls", "Ignored (gcc compatibility)");
 673         put_help("-falign-loops",            "Ignored (gcc compatibility)");
 674         put_help("-falign-jumps",            "Ignored (gcc compatibility)");
 675         put_help("-falign-functions",        "Ignored (gcc compatibility)");
 676         put_help("-fPIC",                    "Ignored (gcc compatibility)");
 677         put_help("-ffast-math",              "Same as -ffp-fast (gcc compatibility)");
 678         puts("");
 679         puts("\tMost of these options can be used with a no- prefix to disable them");
 680         puts("\te.g. -fno-omit-frame-pointer");
 681 }
 682
 683 static void print_help_linker(void)
 684 {
 685         put_help("-l LIBRARY",               "");
 686         put_help("-L PATH",                  "");
 687         put_help("-shared",                  "Produce a shared library");
 688         put_help("-static",                  "Produce statically linked binary");
 689         put_help("-Wl,OPTION",               "Pass option directly to linker");
 690 }
 691
 692 static void print_help_debug(void)
 693 {
 694         put_help("--lextest",                "Preprocess and tokenize only");
 695         put_help("--print-ast",              "Preprocess, parse and print AST");
 696         put_help("--print-implicit-cast",    "");
 697         put_help("--print-parenthesis",      "");
 698         put_help("--benchmark",              "Preprocess and parse, produces no output");
 699         put_help("--time",                   "Measure time of compiler passes");
 700         put_help("--dump-function func",     "Preprocess, parse and output vcg graph of func");
 701         put_help("--export-ir",              "Preprocess, parse and output compiler intermediate representation");
 702 }
 703
 704 static void print_help_language_tools(void)
 705 {
 706         put_help("--print-fluffy",           "Preprocess, parse and generate declarations for the fluffy language");
 707         put_help("--print-jna",              "Preprocess, parse and generate declarations for JNA");
 708         put_help("--jna-limit filename",     "");
 709         put_help("--jna-libname name",       "");
 710 }
 711
 712 static void print_help_firm(void)
 713 {
 714         put_help("-bOPTION",                 "Directly pass option to libFirm backend");
 715         int res = be_parse_arg("help");
 716         (void) res;
 717         assert(res);
 718 }
 719
 720 typedef enum {
 721         HELP_NONE          = 0,
 722         HELP_BASIC         = 1u << 0,
 723         HELP_PREPROCESSOR  = 1u << 1,
 724         HELP_PARSER        = 1u << 2,
 725         HELP_WARNINGS      = 1u << 3,
 726         HELP_OPTIMIZATION  = 1u << 4,
 727         HELP_CODEGEN       = 1u << 5,
 728         HELP_LINKER        = 1u << 6,
 729         HELP_LANGUAGETOOLS = 1u << 7,
 730         HELP_DEBUG         = 1u << 8,
 731         HELP_FIRM          = 1u << 9,
 732
 733         HELP_ALL           = (unsigned)-1
 734 } help_sections_t;
 735
 736 static void print_help(const char *argv0, help_sections_t sections)
 737 {
 738         if (sections & HELP_BASIC)         print_help_basic(argv0);
 739         if (sections & HELP_PREPROCESSOR)  print_help_preprocessor();
 740         if (sections & HELP_PARSER)        print_help_parser();
 741         if (sections & HELP_WARNINGS)      print_help_warnings();
 742         if (sections & HELP_OPTIMIZATION)  print_help_optimization();
 743         if (sections & HELP_CODEGEN)       print_help_codegeneration();
 744         if (sections & HELP_LINKER)        print_help_linker();
 745         if (sections & HELP_LANGUAGETOOLS) print_help_language_tools();
 746         if (sections & HELP_DEBUG)         print_help_debug();
 747         if (sections & HELP_FIRM)          print_help_firm();
 748 }
 749
 750 static void set_be_option(const char *arg)
 751 {
 752         int res = be_parse_arg(arg);
 753         (void) res;
 754         assert(res);
 755 }
 756
 757 static void copy_file(FILE *dest, FILE *input)
 758 {
 759         char buf[16384];
 760
 761         while (!feof(input) && !ferror(dest)) {
 762                 size_t read = fread(buf, 1, sizeof(buf), input);
 763                 if (fwrite(buf, 1, read, dest) != read) {
 764                         perror("could not write output");
 765                 }
 766         }
 767 }
 768
 769 static FILE *open_file(const char *filename)
 770 {
 771         if (streq(filename, "-")) {
 772                 return stdin;
 773         }
 774
 775         FILE *in = fopen(filename, "r");
 776         if (in == NULL) {
 777                 fprintf(stderr, "Could not open '%s': %s\n", filename,
 778                                 strerror(errno));
 779                 exit(EXIT_FAILURE);
 780         }
 781
 782         return in;
 783 }
 784
 785 static filetype_t get_filetype_from_string(const char *string)
 786 {
 787         if (streq(string, "c") || streq(string, "c-header"))
 788                 return FILETYPE_C;
 789         if (streq(string, "c++") || streq(string, "c++-header"))
 790                 return FILETYPE_CXX;
 791         if (streq(string, "assembler"))
 792                 return FILETYPE_PREPROCESSED_ASSEMBLER;
 793         if (streq(string, "assembler-with-cpp"))
 794                 return FILETYPE_ASSEMBLER;
 795         if (streq(string, "none"))
 796                 return FILETYPE_AUTODETECT;
 797
 798         return FILETYPE_UNKNOWN;
 799 }
 800
 801 static bool is_windows_os(const char *os)
 802 {
 803         return strstr(os, "mingw") != NULL || streq(os, "win32");
 804 }
 805
 806 static bool is_unixish_os(const char *os)
 807 {
 808         return strstr(os, "linux") != NULL || strstr(os, "bsd") != NULL
 809                || streq(os, "solaris");
 810 }
 811
 812 static bool is_darwin_os(const char *os)
 813 {
 814         return streq(os, "darwin");
 815 }
 816
 817 static bool init_os_support(void)
 818 {
 819         const char *os = target_machine->operating_system;
 820         wchar_atomic_kind         = ATOMIC_TYPE_INT;
 821         enable_main_collect2_hack = false;
 822         define_intmax_types       = false;
 823
 824         if (is_unixish_os(os)) {
 825                 set_create_ld_ident(create_name_linux_elf);
 826         } else if (is_darwin_os(os)) {
 827                 set_create_ld_ident(create_name_macho);
 828                 define_intmax_types = true;
 829         } else if (is_windows_os(os)) {
 830                 wchar_atomic_kind         = ATOMIC_TYPE_USHORT;
 831                 enable_main_collect2_hack = true;
 832                 set_create_ld_ident(create_name_win32);
 833         } else {
 834                 return false;
 835         }
 836
 837         return true;
 838 }
 839
 840 static bool parse_target_triple(const char *arg)
 841 {
 842         machine_triple_t *triple = firm_parse_machine_triple(arg);
 843         if (triple == NULL) {
 844                 fprintf(stderr, "Target-triple is not in the form 'cpu_type-manufacturer-operating_system'\n");
 845                 return false;
 846         }
 847         target_machine = triple;
 848         return true;
 849 }
 850
 851 static unsigned decide_modulo_shift(unsigned type_size)
 852 {
 853         if (architecture_modulo_shift == 0)
 854                 return 0;
 855         if (type_size < architecture_modulo_shift)
 856                 return architecture_modulo_shift;
 857         return type_size;
 858 }
 859
 860 static void setup_target_machine(void)
 861 {
 862         if (!setup_firm_for_machine(target_machine))
 863                 exit(1);
 864
 865         init_os_support();
 866 }
 867
 868 /**
 869  * initialize cparser type properties based on a firm type
 870  */
 871 static void set_typeprops_type(atomic_type_properties_t* props, ir_type *type)
 872 {
 873         props->size             = get_type_size_bytes(type);
 874         props->alignment        = get_type_alignment_bytes(type);
 875         props->struct_alignment = props->alignment;
 876 }
 877
 878 static void init_types_and_adjust(void)
 879 {
 880         const backend_params *be_params = be_get_backend_param();
 881         unsigned machine_size = be_params->machine_size;
 882         init_types(machine_size);
 883
 884         atomic_type_properties_t *props = atomic_type_properties;
 885
 886         /* adjust types as requested by target architecture */
 887         ir_type *type_long_double = be_params->type_long_double;
 888         if (type_long_double != NULL)
 889                 set_typeprops_type(&props[ATOMIC_TYPE_LONG_DOUBLE], type_long_double);
 890
 891         ir_type *type_long_long = be_params->type_long_long;
 892         if (type_long_long != NULL)
 893                 set_typeprops_type(&props[ATOMIC_TYPE_LONGLONG], type_long_long);
 894
 895         ir_type *type_unsigned_long_long = be_params->type_unsigned_long_long;
 896         if (type_long_long != NULL)
 897                 set_typeprops_type(&props[ATOMIC_TYPE_ULONGLONG], type_unsigned_long_long);
 898
 899         /* operating system ABI specifics */
 900         const char *os = target_machine->operating_system;
 901         if (is_darwin_os(os)) {
 902                 if (machine_size == 32) {
 903                         props[ATOMIC_TYPE_DOUBLE].struct_alignment = 4;
 904                         props[ATOMIC_TYPE_LONG_DOUBLE].size        = 16;
 905                         props[ATOMIC_TYPE_LONG_DOUBLE].alignment   = 16;
 906                 }
 907         } else if (is_windows_os(os)) {
 908                 if (machine_size == 64) {
 909                         /* to ease porting of old c-code microsoft decided to use 32bits
 910                          * even for long */
 911                         props[ATOMIC_TYPE_LONG]  = props[ATOMIC_TYPE_INT];
 912                         props[ATOMIC_TYPE_ULONG] = props[ATOMIC_TYPE_UINT];
 913                 }
 914
 915                 /* on windows long double is not supported */
 916                 props[ATOMIC_TYPE_LONG_DOUBLE] = props[ATOMIC_TYPE_DOUBLE];
 917         } else if (is_unixish_os(os)) {
 918                 if (machine_size == 32) {
 919                         /* System V has a broken alignment for double so we have to add
 920                          * a hack here */
 921                         props[ATOMIC_TYPE_DOUBLE].struct_alignment    = 4;
 922                         props[ATOMIC_TYPE_LONGLONG].struct_alignment  = 4;
 923                         props[ATOMIC_TYPE_ULONGLONG].struct_alignment = 4;
 924                 }
 925         }
 926
 927         /* stuff decided after processing operating system specifics and
 928          * commandline flags */
 929         props[ATOMIC_TYPE_WCHAR_T] = props[wchar_atomic_kind];
 930         if (char_is_signed) {
 931                 props[ATOMIC_TYPE_CHAR].flags |= ATOMIC_TYPE_FLAG_SIGNED;
 932         } else {
 933                 props[ATOMIC_TYPE_CHAR].flags &= ~ATOMIC_TYPE_FLAG_SIGNED;
 934         }
 935
 936         /* initialize defaults for unsupported types */
 937         if (type_long_long == NULL) {
 938                 props[ATOMIC_TYPE_LONGLONG] = props[ATOMIC_TYPE_LONG];
 939         }
 940         if (type_long_double == NULL) {
 941                 props[ATOMIC_TYPE_LONG_DOUBLE] = props[ATOMIC_TYPE_DOUBLE];
 942         }
 943         if (type_unsigned_long_long == NULL) {
 944                 props[ATOMIC_TYPE_ULONGLONG] = props[ATOMIC_TYPE_ULONG];
 945         }
 946
 947         /* initialize firm pointer modes */
 948         char               name[64];
 949         ir_mode_sort       sort         = irms_reference;
 950         unsigned           bit_size     = machine_size;
 951         bool               is_signed    = 0;
 952         ir_mode_arithmetic arithmetic   = irma_twos_complement;
 953         unsigned           modulo_shift = decide_modulo_shift(bit_size);
 954
 955         snprintf(name, sizeof(name), "p%u", machine_size);
 956         ir_mode *ptr_mode = new_ir_mode(name, sort, bit_size, is_signed, arithmetic,
 957                                         modulo_shift);
 958
 959         if (machine_size == 16) {
 960                 set_reference_mode_signed_eq(ptr_mode, mode_Hs);
 961                 set_reference_mode_unsigned_eq(ptr_mode, mode_Hu);
 962         } else if (machine_size == 32) {
 963                 set_reference_mode_signed_eq(ptr_mode, mode_Is);
 964                 set_reference_mode_unsigned_eq(ptr_mode, mode_Iu);
 965         } else if (machine_size == 64) {
 966                 set_reference_mode_signed_eq(ptr_mode, mode_Ls);
 967                 set_reference_mode_unsigned_eq(ptr_mode, mode_Lu);
 968         } else {
 969                 panic("strange machine_size when determining pointer modes");
 970         }
 971
 972         /* Hmm, pointers should be machine size */
 973         set_modeP_data(ptr_mode);
 974         set_modeP_code(ptr_mode);
 975
 976         byte_order_big_endian = be_params->byte_order_big_endian;
 977         if (be_params->modulo_shift_efficient) {
 978                 architecture_modulo_shift = machine_size;
 979         } else {
 980                 architecture_modulo_shift = 0;
 981         }
 982 }
 983
 984 int main(int argc, char **argv)
 985 {
 986         firm_early_init();
 987
 988         const char        *dumpfunction         = NULL;
 989         const char        *print_file_name_file = NULL;
 990         compile_mode_t     mode                 = CompileAssembleLink;
 991         int                opt_level            = 1;
 992         int                result               = EXIT_SUCCESS;
 993         char               cpu_arch[16]         = "ia32";
 994         file_list_entry_t *files                = NULL;
 995         file_list_entry_t *last_file            = NULL;
 996         bool               construct_dep_target = false;
 997         bool               do_timing            = false;
 998         bool               profile_generate     = false;
 999         bool               profile_use          = false;
1000         struct obstack     file_obst;
1001
1002         atexit(free_temp_files);
1003
1004         /* hack for now... */
1005         if (strstr(argv[0], "pptest") != NULL) {
1006                 extern int pptest_main(int argc, char **argv);
1007                 return pptest_main(argc, argv);
1008         }
1009
1010         obstack_init(&cppflags_obst);
1011         obstack_init(&ldflags_obst);
1012         obstack_init(&asflags_obst);
1013         obstack_init(&file_obst);
1014
1015 #define GET_ARG_AFTER(def, args)                                             \
1016         do {                                                                     \
1017         def = &arg[sizeof(args)-1];                                              \
1018         if (def[0] == '\0') {                                                    \
1019                 ++i;                                                                 \
1020                 if (i >= argc) {                                                     \
1021                         fprintf(stderr, "error: expected argument after '" args "'\n");  \
1022                         argument_errors = true;                                          \
1023                         break;                                                           \
1024                 }                                                                    \
1025                 def = argv[i];                                                       \
1026                 if (def[0] == '-' && def[1] != '\0') {                               \
1027                         fprintf(stderr, "error: expected argument after '" args "'\n");  \
1028                         argument_errors = true;                                          \
1029                         continue;                                                        \
1030                 }                                                                    \
1031         }                                                                        \
1032         } while (0)
1033
1034 #define SINGLE_OPTION(ch) (option[0] == (ch) && option[1] == '\0')
1035
1036         /* early options parsing (find out optimization level and OS) */
1037         for (int i = 1; i < argc; ++i) {
1038                 const char *arg = argv[i];
1039                 if (arg[0] != '-')
1040                         continue;
1041
1042                 const char *option = &arg[1];
1043                 if (option[0] == 'O') {
1044                         sscanf(&option[1], "%d", &opt_level);
1045                 }
1046         }
1047
1048         const char *target = getenv("TARGET");
1049         if (target != NULL)
1050                 parse_target_triple(target);
1051         if (target_machine == NULL) {
1052                 target_machine = firm_get_host_machine();
1053         }
1054         choose_optimization_pack(opt_level);
1055         setup_target_machine();
1056
1057         /* parse rest of options */
1058                         standard        = STANDARD_DEFAULT;
1059         unsigned        features_on     = 0;
1060         unsigned        features_off    = 0;
1061         filetype_t      forced_filetype = FILETYPE_AUTODETECT;
1062         help_sections_t help            = HELP_NONE;
1063         bool            argument_errors = false;
1064         for (int i = 1; i < argc; ++i) {
1065                 const char *arg = argv[i];
1066                 if (arg[0] == '-' && arg[1] != '\0') {
1067                         /* an option */
1068                         const char *option = &arg[1];
1069                         if (option[0] == 'o') {
1070                                 GET_ARG_AFTER(outname, "-o");
1071                         } else if (option[0] == 'g') {
1072                                 set_be_option("debuginfo=stabs");
1073                                 set_be_option("omitfp=no");
1074                                 set_be_option("ia32-nooptcc=yes");
1075                         } else if (SINGLE_OPTION('c')) {
1076                                 mode = CompileAssemble;
1077                         } else if (SINGLE_OPTION('E')) {
1078                                 mode = PreprocessOnly;
1079                         } else if (SINGLE_OPTION('S')) {
1080                                 mode = Compile;
1081                         } else if (option[0] == 'O') {
1082                                 continue;
1083                         } else if (option[0] == 'I') {
1084                                 const char *opt;
1085                                 GET_ARG_AFTER(opt, "-I");
1086                                 add_flag(&cppflags_obst, "-I%s", opt);
1087                         } else if (option[0] == 'D') {
1088                                 const char *opt;
1089                                 GET_ARG_AFTER(opt, "-D");
1090                                 add_flag(&cppflags_obst, "-D%s", opt);
1091                         } else if (option[0] == 'U') {
1092                                 const char *opt;
1093                                 GET_ARG_AFTER(opt, "-U");
1094                                 add_flag(&cppflags_obst, "-U%s", opt);
1095                         } else if (option[0] == 'l') {
1096                                 const char *opt;
1097                                 GET_ARG_AFTER(opt, "-l");
1098                                 add_flag(&ldflags_obst, "-l%s", opt);
1099                         } else if (option[0] == 'L') {
1100                                 const char *opt;
1101                                 GET_ARG_AFTER(opt, "-L");
1102                                 add_flag(&ldflags_obst, "-L%s", opt);
1103                         } else if (SINGLE_OPTION('v')) {
1104                                 verbose = 1;
1105                         } else if (SINGLE_OPTION('w')) {
1106                                 disable_all_warnings();
1107                         } else if (option[0] == 'x') {
1108                                 const char *opt;
1109                                 GET_ARG_AFTER(opt, "-x");
1110                                 forced_filetype = get_filetype_from_string(opt);
1111                                 if (forced_filetype == FILETYPE_UNKNOWN) {
1112                                         fprintf(stderr, "Unknown language '%s'\n", opt);
1113                                         argument_errors = true;
1114                                 }
1115                         } else if (streq(option, "M")) {
1116                                 mode = PreprocessOnly;
1117                                 add_flag(&cppflags_obst, "-M");
1118                         } else if (streq(option, "MMD") ||
1119                                    streq(option, "MD")) {
1120                             construct_dep_target = true;
1121                                 add_flag(&cppflags_obst, "-%s", option);
1122                         } else if (streq(option, "MM")  ||
1123                                    streq(option, "MP")) {
1124                                 add_flag(&cppflags_obst, "-%s", option);
1125                         } else if (streq(option, "MT") ||
1126                                    streq(option, "MQ") ||
1127                                    streq(option, "MF")) {
1128                                 const char *opt;
1129                                 GET_ARG_AFTER(opt, "-MT");
1130                                 add_flag(&cppflags_obst, "-%s", option);
1131                                 add_flag(&cppflags_obst, "%s", opt);
1132                         } else if (streq(option, "include")) {
1133                                 const char *opt;
1134                                 GET_ARG_AFTER(opt, "-include");
1135                                 add_flag(&cppflags_obst, "-include");
1136                                 add_flag(&cppflags_obst, "%s", opt);
1137                         } else if (streq(option, "isystem")) {
1138                                 const char *opt;
1139                                 GET_ARG_AFTER(opt, "-isystem");
1140                                 add_flag(&cppflags_obst, "-isystem");
1141                                 add_flag(&cppflags_obst, "%s", opt);
1142 #if defined(linux) || defined(__linux) || defined(__linux__) || defined(__CYGWIN__)
1143                         } else if (streq(option, "pthread")) {
1144                                 /* set flags for the preprocessor */
1145                                 add_flag(&cppflags_obst, "-D_REENTRANT");
1146                                 /* set flags for the linker */
1147                                 add_flag(&ldflags_obst, "-lpthread");
1148 #endif
1149                         } else if (streq(option, "nostdinc")
1150                                         || streq(option, "trigraphs")) {
1151                                 /* pass these through to the preprocessor */
1152                                 add_flag(&cppflags_obst, "%s", arg);
1153                         } else if (streq(option, "pipe")) {
1154                                 /* here for gcc compatibility */
1155                         } else if (streq(option, "static")) {
1156                                 add_flag(&ldflags_obst, "-static");
1157                         } else if (streq(option, "shared")) {
1158                                 add_flag(&ldflags_obst, "-shared");
1159                         } else if (option[0] == 'f') {
1160                                 char const *orig_opt;
1161                                 GET_ARG_AFTER(orig_opt, "-f");
1162
1163                                 if (strstart(orig_opt, "input-charset=")) {
1164                                         char const* const encoding = strchr(orig_opt, '=') + 1;
1165                                         select_input_encoding(encoding);
1166                                 } else if (strstart(orig_opt, "align-loops=") ||
1167                                            strstart(orig_opt, "align-jumps=") ||
1168                                            strstart(orig_opt, "align-functions=")) {
1169                                         fprintf(stderr, "ignoring gcc option '-f%s'\n", orig_opt);
1170                                 } else if (strstart(orig_opt, "visibility=")) {
1171                                         const char *val = strchr(orig_opt, '=')+1;
1172                                         elf_visibility_tag_t visibility
1173                                                 = get_elf_visibility_from_string(val);
1174                                         if (visibility == ELF_VISIBILITY_ERROR) {
1175                                                 fprintf(stderr, "invalid visibility '%s' specified\n",
1176                                                         val);
1177                                                 argument_errors = true;
1178                                         } else {
1179                                                 set_default_visibility(visibility);
1180                                         }
1181                                 } else if (strstart(orig_opt, "message-length=")) {
1182                                         /* ignore: would only affect error message format */
1183                                 } else if (streq(orig_opt, "fast-math") ||
1184                                            streq(orig_opt, "fp-fast")) {
1185                                         firm_fp_model = fp_model_fast;
1186                                 } else if (streq(orig_opt, "fp-precise")) {
1187                                         firm_fp_model = fp_model_precise;
1188                                 } else if (streq(orig_opt, "fp-strict")) {
1189                                         firm_fp_model = fp_model_strict;
1190                                 } else if (streq(orig_opt, "help")) {
1191                                         fprintf(stderr, "warning: -fhelp is deprecated\n");
1192                                         help |= HELP_OPTIMIZATION;
1193                                 } else {
1194                                         /* -f options which have an -fno- variant */
1195                                         char const *opt         = orig_opt;
1196                                         bool        truth_value = true;
1197                                         if (opt[0] == 'n' && opt[1] == 'o' && opt[2] == '-') {
1198                                                 truth_value = false;
1199                                                 opt += 3;
1200                                         }
1201
1202                                         if (streq(opt, "diagnostics-show-option")) {
1203                                                 diagnostics_show_option = truth_value;
1204                                         } else if (streq(opt, "dollars-in-identifiers")) {
1205                                                 allow_dollar_in_symbol = truth_value;
1206                                         } else if (streq(opt, "omit-frame-pointer")) {
1207                                                 set_be_option(truth_value ? "omitfp" : "omitfp=no");
1208                                         } else if (streq(opt, "short-wchar")) {
1209                                                 wchar_atomic_kind = truth_value ? ATOMIC_TYPE_USHORT
1210                                                         : ATOMIC_TYPE_INT;
1211                                         } else if (streq(opt, "show-column")) {
1212                                                 show_column = truth_value;
1213                                         } else if (streq(opt, "signed-char")) {
1214                                                 char_is_signed = truth_value;
1215                                         } else if (streq(opt, "strength-reduce")) {
1216                                                 /* does nothing, for gcc compatibility (even gcc does
1217                                                  * nothing for this switch anymore) */
1218                                         } else if (streq(opt, "syntax-only")) {
1219                                                 mode = truth_value ? ParseOnly : CompileAssembleLink;
1220                                         } else if (streq(opt, "unsigned-char")) {
1221                                                 char_is_signed = !truth_value;
1222                                         } else if (streq(opt, "freestanding")) {
1223                                                 freestanding = truth_value;
1224                                         } else if (streq(opt, "hosted")) {
1225                                                 freestanding = !truth_value;
1226                                         } else if (streq(opt, "profile-generate")) {
1227                                                 profile_generate = truth_value;
1228                                         } else if (streq(opt, "profile-use")) {
1229                                                 profile_use = truth_value;
1230                                         } else if (!truth_value &&
1231                                                    streq(opt, "asynchronous-unwind-tables")) {
1232                                             /* nothing todo, a gcc feature which we do not support
1233                                              * anyway was deactivated */
1234                                         } else if (streq(opt, "verbose-asm")) {
1235                                                 /* ignore: we always print verbose assembler */
1236                                         } else if (streq(opt, "jump-tables")             ||
1237                                                    streq(opt, "expensive-optimizations") ||
1238                                                    streq(opt, "common")                  ||
1239                                                    streq(opt, "optimize-sibling-calls")  ||
1240                                                    streq(opt, "align-loops")             ||
1241                                                    streq(opt, "align-jumps")             ||
1242                                                    streq(opt, "align-functions")         ||
1243                                                    streq(opt, "PIC")) {
1244                                                 fprintf(stderr, "ignoring gcc option '-f%s'\n", orig_opt);
1245                                         } else {
1246                                                 int res = firm_option(orig_opt);
1247                                                 if (res == 0) {
1248                                                         fprintf(stderr, "error: unknown Firm option '-f%s'\n",
1249                                                                 orig_opt);
1250                                                         argument_errors = true;
1251                                                         continue;
1252                                                 }
1253                                         }
1254                                 }
1255                         } else if (option[0] == 'b') {
1256                                 const char *opt;
1257                                 GET_ARG_AFTER(opt, "-b");
1258
1259                                 if (streq(opt, "help")) {
1260                                         fprintf(stderr, "warning: -bhelp is deprecated (use --help-firm)\n");
1261                                         help |= HELP_FIRM;
1262                                 } else {
1263                                         int res = be_parse_arg(opt);
1264                                         if (res == 0) {
1265                                                 fprintf(stderr, "error: unknown Firm backend option '-b %s'\n",
1266                                                                 opt);
1267                                                 argument_errors = true;
1268                                         } else if (strstart(opt, "isa=")) {
1269                                                 strncpy(cpu_arch, opt, sizeof(cpu_arch));
1270                                         }
1271                                 }
1272                         } else if (option[0] == 'W') {
1273                                 if (strstart(option + 1, "p,")) {
1274                                         // pass options directly to the preprocessor
1275                                         const char *opt;
1276                                         GET_ARG_AFTER(opt, "-Wp,");
1277                                         add_flag(&cppflags_obst, "-Wp,%s", opt);
1278                                 } else if (strstart(option + 1, "l,")) {
1279                                         // pass options directly to the linker
1280                                         const char *opt;
1281                                         GET_ARG_AFTER(opt, "-Wl,");
1282                                         add_flag(&ldflags_obst, "-Wl,%s", opt);
1283                                 } else if (streq(option + 1, "no-trigraphs")
1284                                                         || streq(option + 1, "undef")) {
1285                                         add_flag(&cppflags_obst, "%s", arg);
1286                                 } else if (streq(option+1, "init-self")) {
1287                                         /* ignored (gcc compatibility) */
1288                                 } else {
1289                                         set_warning_opt(&option[1]);
1290                                 }
1291                         } else if (option[0] == 'm') {
1292                                 /* -m options */
1293                                 const char *opt;
1294                                 char arch_opt[64];
1295
1296                                 GET_ARG_AFTER(opt, "-m");
1297                                 if (strstart(opt, "target=")) {
1298                                         GET_ARG_AFTER(opt, "-mtarget=");
1299                                         if (!parse_target_triple(opt)) {
1300                                                 argument_errors = true;
1301                                         } else {
1302                                                 setup_target_machine();
1303                                                 target_triple = opt;
1304                                         }
1305                                 } else if (strstart(opt, "triple=")) {
1306                                         GET_ARG_AFTER(opt, "-mtriple=");
1307                                         if (!parse_target_triple(opt)) {
1308                                                 argument_errors = true;
1309                                         } else {
1310                                                 setup_target_machine();
1311                                                 target_triple = opt;
1312                                         }
1313                                 } else if (strstart(opt, "arch=")) {
1314                                         GET_ARG_AFTER(opt, "-march=");
1315                                         snprintf(arch_opt, sizeof(arch_opt), "%s-arch=%s", cpu_arch, opt);
1316                                         int res = be_parse_arg(arch_opt);
1317                                         snprintf(arch_opt, sizeof(arch_opt), "%s-opt=%s", cpu_arch, opt);
1318                                         res &= be_parse_arg(arch_opt);
1319
1320                                         if (res == 0) {
1321                                                 fprintf(stderr, "Unknown architecture '%s'\n", arch_opt);
1322                                                 argument_errors = true;
1323                                         }
1324                                 } else if (strstart(opt, "tune=")) {
1325                                         GET_ARG_AFTER(opt, "-mtune=");
1326                                         snprintf(arch_opt, sizeof(arch_opt), "%s-opt=%s", cpu_arch, opt);
1327                                         int res = be_parse_arg(arch_opt);
1328                                         if (res == 0)
1329                                                 argument_errors = true;
1330                                 } else if (strstart(opt, "cpu=")) {
1331                                         GET_ARG_AFTER(opt, "-mcpu=");
1332                                         snprintf(arch_opt, sizeof(arch_opt), "%s-arch=%s", cpu_arch, opt);
1333                                         int res = be_parse_arg(arch_opt);
1334                                         if (res == 0)
1335                                                 argument_errors = true;
1336                                 } else if (strstart(opt, "fpmath=")) {
1337                                         GET_ARG_AFTER(opt, "-mfpmath=");
1338                                         if (streq(opt, "387"))
1339                                                 opt = "x87";
1340                                         else if (streq(opt, "sse"))
1341                                                 opt = "sse2";
1342                                         else {
1343                                                 fprintf(stderr, "error: option -mfpmath supports only 387 or sse\n");
1344                                                 argument_errors = true;
1345                                         }
1346                                         if (!argument_errors) {
1347                                                 snprintf(arch_opt, sizeof(arch_opt), "%s-fpunit=%s", cpu_arch, opt);
1348                                                 int res = be_parse_arg(arch_opt);
1349                                                 if (res == 0)
1350                                                         argument_errors = true;
1351                                         }
1352                                 } else if (strstart(opt, "preferred-stack-boundary=")) {
1353                                         GET_ARG_AFTER(opt, "-mpreferred-stack-boundary=");
1354                                         snprintf(arch_opt, sizeof(arch_opt), "%s-stackalign=%s", cpu_arch, opt);
1355                                         int res = be_parse_arg(arch_opt);
1356                                         if (res == 0)
1357                                                 argument_errors = true;
1358                                 } else if (streq(opt, "rtd")) {
1359                                         default_calling_convention = CC_STDCALL;
1360                                 } else if (strstart(opt, "regparm=")) {
1361                                         fprintf(stderr, "error: regparm convention not supported yet\n");
1362                                         argument_errors = true;
1363                                 } else if (streq(opt, "soft-float")) {
1364                                         fprintf(stderr, "error: software floatingpoint not supported yet\n");
1365                                         argument_errors = true;
1366                                 } else {
1367                                         long int value = strtol(opt, NULL, 10);
1368                                         if (value == 0) {
1369                                                 fprintf(stderr, "error: wrong option '-m %s'\n",  opt);
1370                                                 argument_errors = true;
1371                                         } else if (value != 16 && value != 32 && value != 64) {
1372                                                 fprintf(stderr, "error: option -m supports only 16, 32 or 64\n");
1373                                                 argument_errors = true;
1374                                         } else {
1375                                                 unsigned machine_size = (unsigned)value;
1376                                                 /* TODO: choose/change backend based on this */
1377                                                 add_flag(&cppflags_obst, "-m%u", machine_size);
1378                                                 add_flag(&asflags_obst, "-m%u", machine_size);
1379                                                 add_flag(&ldflags_obst, "-m%u", machine_size);
1380                                         }
1381                                 }
1382                         } else if (streq(option, "pg")) {
1383                                 set_be_option("gprof");
1384                                 add_flag(&ldflags_obst, "-pg");
1385                         } else if (streq(option, "pedantic") ||
1386                                    streq(option, "ansi")) {
1387                                 fprintf(stderr, "warning: ignoring gcc option '%s'\n", arg);
1388                         } else if (strstart(option, "std=")) {
1389                                 const char *const o = &option[4];
1390                                 standard =
1391                                         streq(o, "c++")            ? STANDARD_CXX98   :
1392                                         streq(o, "c++98")          ? STANDARD_CXX98   :
1393                                         streq(o, "c89")            ? STANDARD_C89     :
1394                                         streq(o, "c99")            ? STANDARD_C99     :
1395                                         streq(o, "c9x")            ? STANDARD_C99     : // deprecated
1396                                         streq(o, "gnu++98")        ? STANDARD_GNUXX98 :
1397                                         streq(o, "gnu89")          ? STANDARD_GNU89   :
1398                                         streq(o, "gnu99")          ? STANDARD_GNU99   :
1399                                         streq(o, "gnu9x")          ? STANDARD_GNU99   : // deprecated
1400                                         streq(o, "iso9899:1990")   ? STANDARD_C89     :
1401                                         streq(o, "iso9899:199409") ? STANDARD_C90     :
1402                                         streq(o, "iso9899:1999")   ? STANDARD_C99     :
1403                                         streq(o, "iso9899:199x")   ? STANDARD_C99     : // deprecated
1404                                         (fprintf(stderr, "warning: ignoring gcc option '%s'\n", arg), standard);
1405                         } else if (streq(option, "version")) {
1406                                 print_cparser_version();
1407                         } else if (strstart(option, "print-file-name=")) {
1408                                 GET_ARG_AFTER(print_file_name_file, "-print-file-name=");
1409                         } else if (option[0] == '-') {
1410                                 /* double dash option */
1411                                 ++option;
1412                                 if (streq(option, "gcc")) {
1413                                         features_on  |=  _GNUC;
1414                                         features_off &= ~_GNUC;
1415                                 } else if (streq(option, "no-gcc")) {
1416                                         features_on  &= ~_GNUC;
1417                                         features_off |=  _GNUC;
1418                                 } else if (streq(option, "ms")) {
1419                                         features_on  |=  _MS;
1420                                         features_off &= ~_MS;
1421                                 } else if (streq(option, "no-ms")) {
1422                                         features_on  &= ~_MS;
1423                                         features_off |=  _MS;
1424                                 } else if (streq(option, "strict")) {
1425                                         strict_mode = true;
1426                                 } else if (streq(option, "lextest")) {
1427                                         mode = LexTest;
1428                                 } else if (streq(option, "benchmark")) {
1429                                         mode = BenchmarkParser;
1430                                 } else if (streq(option, "print-ast")) {
1431                                         mode = PrintAst;
1432                                 } else if (streq(option, "print-implicit-cast")) {
1433                                         print_implicit_casts = true;
1434                                 } else if (streq(option, "print-parenthesis")) {
1435                                         print_parenthesis = true;
1436                                 } else if (streq(option, "print-fluffy")) {
1437                                         mode = PrintFluffy;
1438                                 } else if (streq(option, "print-jna")) {
1439                                         mode = PrintJna;
1440                                 } else if (streq(option, "jna-limit")) {
1441                                         ++i;
1442                                         if (i >= argc) {
1443                                                 fprintf(stderr, "error: "
1444                                                         "expected argument after '--jna-limit'\n");
1445                                                 argument_errors = true;
1446                                                 break;
1447                                         }
1448                                         jna_limit_output(argv[i]);
1449                                 } else if (streq(option, "jna-libname")) {
1450                                         ++i;
1451                                         if (i >= argc) {
1452                                                 fprintf(stderr, "error: "
1453                                                         "expected argument after '--jna-libname'\n");
1454                                                 argument_errors = true;
1455                                                 break;
1456                                         }
1457                                         jna_set_libname(argv[i]);
1458                                 } else if (streq(option, "time")) {
1459                                         do_timing = true;
1460                                 } else if (streq(option, "version")) {
1461                                         print_cparser_version();
1462                                         return EXIT_SUCCESS;
1463                                 } else if (streq(option, "help")) {
1464                                         help |= HELP_BASIC;
1465                                 } else if (streq(option, "help-parser")) {
1466                                         help |= HELP_PARSER;
1467                                 } else if (streq(option, "help-warnings")) {
1468                                         help |= HELP_WARNINGS;
1469                                 } else if (streq(option, "help-codegen")) {
1470                                         help |= HELP_CODEGEN;
1471                                 } else if (streq(option, "help-linker")) {
1472                                         help |= HELP_LINKER;
1473                                 } else if (streq(option, "help-optimization")) {
1474                                         help |= HELP_OPTIMIZATION;
1475                                 } else if (streq(option, "help-language-tools")) {
1476                                         help |= HELP_LANGUAGETOOLS;
1477                                 } else if (streq(option, "help-debug")) {
1478                                         help |= HELP_DEBUG;
1479                                 } else if (streq(option, "help-firm")) {
1480                                         help |= HELP_FIRM;
1481                                 } else if (streq(option, "help-all")) {
1482                                         help |= HELP_ALL;
1483                                 } else if (streq(option, "dump-function")) {
1484                                         ++i;
1485                                         if (i >= argc) {
1486                                                 fprintf(stderr, "error: "
1487                                                         "expected argument after '--dump-function'\n");
1488                                                 argument_errors = true;
1489                                                 break;
1490                                         }
1491                                         dumpfunction = argv[i];
1492                                         mode         = CompileDump;
1493                                 } else if (streq(option, "export-ir")) {
1494                                         mode = CompileExportIR;
1495                                 } else {
1496                                         fprintf(stderr, "error: unknown argument '%s'\n", arg);
1497                                         argument_errors = true;
1498                                 }
1499                         } else {
1500                                 fprintf(stderr, "error: unknown argument '%s'\n", arg);
1501                                 argument_errors = true;
1502                         }
1503                 } else {
1504                         filetype_t type = forced_filetype;
1505                         if (type == FILETYPE_AUTODETECT) {
1506                                 if (streq(arg, "-")) {
1507                                         /* - implicitly means C source file */
1508                                         type = FILETYPE_C;
1509                                 } else {
1510                                         const char *suffix = strrchr(arg, '.');
1511                                         /* Ensure there is at least one char before the suffix */
1512                                         if (suffix != NULL && suffix != arg) {
1513                                                 ++suffix;
1514                                                 type =
1515                                                         streq(suffix, "S")   ? FILETYPE_ASSEMBLER              :
1516                                                         streq(suffix, "a")   ? FILETYPE_OBJECT                 :
1517                                                         streq(suffix, "c")   ? FILETYPE_C                      :
1518                                                         streq(suffix, "i")   ? FILETYPE_PREPROCESSED_C         :
1519                                                         streq(suffix, "C")   ? FILETYPE_CXX                    :
1520                                                         streq(suffix, "cc")  ? FILETYPE_CXX                    :
1521                                                         streq(suffix, "cp")  ? FILETYPE_CXX                    :
1522                                                         streq(suffix, "cpp") ? FILETYPE_CXX                    :
1523                                                         streq(suffix, "CPP") ? FILETYPE_CXX                    :
1524                                                         streq(suffix, "cxx") ? FILETYPE_CXX                    :
1525                                                         streq(suffix, "c++") ? FILETYPE_CXX                    :
1526                                                         streq(suffix, "ii")  ? FILETYPE_PREPROCESSED_CXX       :
1527                                                         streq(suffix, "h")   ? FILETYPE_C                      :
1528                                                         streq(suffix, "ir")  ? FILETYPE_IR                     :
1529                                                         streq(suffix, "o")   ? FILETYPE_OBJECT                 :
1530                                                         streq(suffix, "s")   ? FILETYPE_PREPROCESSED_ASSEMBLER :
1531                                                         streq(suffix, "so")  ? FILETYPE_OBJECT                 :
1532                                                         FILETYPE_OBJECT; /* gcc behavior: unknown file extension means object file */
1533                                         }
1534                                 }
1535                         }
1536
1537                         file_list_entry_t *entry
1538                                 = obstack_alloc(&file_obst, sizeof(entry[0]));
1539                         memset(entry, 0, sizeof(entry[0]));
1540                         entry->name = arg;
1541                         entry->type = type;
1542
1543                         if (last_file != NULL) {
1544                                 last_file->next = entry;
1545                         } else {
1546                                 files = entry;
1547                         }
1548                         last_file = entry;
1549                 }
1550         }
1551
1552         if (help != HELP_NONE) {
1553                 print_help(argv[0], help);
1554                 return !argument_errors;
1555         }
1556
1557         if (print_file_name_file != NULL) {
1558                 print_file_name(print_file_name_file);
1559                 return EXIT_SUCCESS;
1560         }
1561         if (files == NULL) {
1562                 fprintf(stderr, "error: no input files specified\n");
1563                 argument_errors = true;
1564         }
1565
1566         if (argument_errors) {
1567                 usage(argv[0]);
1568                 return EXIT_FAILURE;
1569         }
1570
1571         /* apply some effects from switches */
1572         c_mode |= features_on;
1573         c_mode &= ~features_off;
1574         if (profile_generate) {
1575                 add_flag(&ldflags_obst, "-lfirmprof");
1576                 set_be_option("profilegenerate");
1577         }
1578         if (profile_use) {
1579                 set_be_option("profileuse");
1580         }
1581
1582         gen_firm_init();
1583         init_symbol_table();
1584         init_types_and_adjust();
1585         init_typehash();
1586         init_basic_types();
1587         if (wchar_atomic_kind == ATOMIC_TYPE_INT)
1588                 init_wchar_types(type_int);
1589         else if (wchar_atomic_kind == ATOMIC_TYPE_SHORT)
1590                 init_wchar_types(type_short);
1591         else
1592                 panic("unexpected wchar type");
1593         init_lexer();
1594         init_ast();
1595         init_parser();
1596         init_ast2firm();
1597         init_mangle();
1598
1599         if (do_timing)
1600                 timer_init();
1601
1602         if (construct_dep_target) {
1603                 if (outname != 0 && strlen(outname) >= 2) {
1604                         get_output_name(dep_target, sizeof(dep_target), outname, ".d");
1605                 } else {
1606                         get_output_name(dep_target, sizeof(dep_target), files->name, ".d");
1607                 }
1608         } else {
1609                 dep_target[0] = '\0';
1610         }
1611
1612         char outnamebuf[4096];
1613         if (outname == NULL) {
1614                 const char *filename = files->name;
1615
1616                 switch(mode) {
1617                 case BenchmarkParser:
1618                 case PrintAst:
1619                 case PrintFluffy:
1620                 case PrintJna:
1621                 case LexTest:
1622                 case PreprocessOnly:
1623                 case ParseOnly:
1624                         outname = "-";
1625                         break;
1626                 case Compile:
1627                         get_output_name(outnamebuf, sizeof(outnamebuf), filename, ".s");
1628                         outname = outnamebuf;
1629                         break;
1630                 case CompileAssemble:
1631                         get_output_name(outnamebuf, sizeof(outnamebuf), filename, ".o");
1632                         outname = outnamebuf;
1633                         break;
1634                 case CompileDump:
1635                         get_output_name(outnamebuf, sizeof(outnamebuf), dumpfunction,
1636                                         ".vcg");
1637                         outname = outnamebuf;
1638                         break;
1639                 case CompileExportIR:
1640                         get_output_name(outnamebuf, sizeof(outnamebuf), filename, ".ir");
1641                         outname = outnamebuf;
1642                         break;
1643                 case CompileAssembleLink:
1644 #ifdef _WIN32
1645                         outname = "a.exe";
1646 #else
1647                         outname = "a.out";
1648 #endif
1649                         break;
1650                 }
1651         }
1652
1653         assert(outname != NULL);
1654
1655         FILE *out;
1656         if (streq(outname, "-")) {
1657                 out = stdout;
1658         } else {
1659                 out = fopen(outname, "w");
1660                 if (out == NULL) {
1661                         fprintf(stderr, "Could not open '%s' for writing: %s\n", outname,
1662                                         strerror(errno));
1663                         return EXIT_FAILURE;
1664                 }
1665         }
1666
1667         file_list_entry_t *file;
1668         bool               already_constructed_firm = false;
1669         for (file = files; file != NULL; file = file->next) {
1670                 char        asm_tempfile[1024];
1671                 const char *filename = file->name;
1672                 filetype_t  filetype = file->type;
1673
1674                 if (filetype == FILETYPE_OBJECT)
1675                         continue;
1676
1677                 FILE *in = NULL;
1678                 if (mode == LexTest) {
1679                         if (in == NULL)
1680                                 in = open_file(filename);
1681                         lextest(in, filename);
1682                         fclose(in);
1683                         return EXIT_SUCCESS;
1684                 }
1685
1686                 FILE *preprocessed_in = NULL;
1687                 filetype_t next_filetype = filetype;
1688                 switch (filetype) {
1689                         case FILETYPE_C:
1690                                 next_filetype = FILETYPE_PREPROCESSED_C;
1691                                 goto preprocess;
1692                         case FILETYPE_CXX:
1693                                 next_filetype = FILETYPE_PREPROCESSED_CXX;
1694                                 goto preprocess;
1695                         case FILETYPE_ASSEMBLER:
1696                                 next_filetype = FILETYPE_PREPROCESSED_ASSEMBLER;
1697                                 goto preprocess;
1698 preprocess:
1699                                 /* no support for input on FILE* yet */
1700                                 if (in != NULL)
1701                                         panic("internal compiler error: in for preprocessor != NULL");
1702
1703                                 preprocessed_in = preprocess(filename, filetype);
1704                                 if (mode == PreprocessOnly) {
1705                                         copy_file(out, preprocessed_in);
1706                                         int pp_result = pclose(preprocessed_in);
1707                                         fclose(out);
1708                                         /* remove output file in case of error */
1709                                         if (out != stdout && pp_result != EXIT_SUCCESS) {
1710                                                 unlink(outname);
1711                                         }
1712                                         return pp_result;
1713                                 }
1714
1715                                 in = preprocessed_in;
1716                                 filetype = next_filetype;
1717                                 break;
1718
1719                         default:
1720                                 break;
1721                 }
1722
1723                 FILE *asm_out;
1724                 if (mode == Compile) {
1725                         asm_out = out;
1726                 } else {
1727                         asm_out = make_temp_file(asm_tempfile, sizeof(asm_tempfile), "ccs");
1728                 }
1729
1730                 if (in == NULL)
1731                         in = open_file(filename);
1732
1733                 /* preprocess and compile */
1734                 if (filetype == FILETYPE_PREPROCESSED_C) {
1735                         char const* invalid_mode;
1736                         switch (standard) {
1737                                 case STANDARD_ANSI:
1738                                 case STANDARD_C89:   c_mode = _C89;                break;
1739                                 /* TODO determine difference between these two */
1740                                 case STANDARD_C90:   c_mode = _C89;                break;
1741                                 case STANDARD_C99:   c_mode = _C89 | _C99;         break;
1742                                 case STANDARD_GNU89: c_mode = _C89 |        _GNUC; break;
1743
1744 default_c_warn:
1745                                         fprintf(stderr,
1746                                                         "warning: command line option \"-std=%s\" is not valid for C\n",
1747                                                         invalid_mode);
1748                                         /* FALLTHROUGH */
1749                                 case STANDARD_DEFAULT:
1750                                 case STANDARD_GNU99:   c_mode = _C89 | _C99 | _GNUC; break;
1751
1752                                 case STANDARD_CXX98:   invalid_mode = "c++98"; goto default_c_warn;
1753                                 case STANDARD_GNUXX98: invalid_mode = "gnu98"; goto default_c_warn;
1754                         }
1755                         goto do_parsing;
1756                 } else if (filetype == FILETYPE_PREPROCESSED_CXX) {
1757                         char const* invalid_mode;
1758                         switch (standard) {
1759                                 case STANDARD_C89:   invalid_mode = "c89";   goto default_cxx_warn;
1760                                 case STANDARD_C90:   invalid_mode = "c90";   goto default_cxx_warn;
1761                                 case STANDARD_C99:   invalid_mode = "c99";   goto default_cxx_warn;
1762                                 case STANDARD_GNU89: invalid_mode = "gnu89"; goto default_cxx_warn;
1763                                 case STANDARD_GNU99: invalid_mode = "gnu99"; goto default_cxx_warn;
1764
1765                                 case STANDARD_ANSI:
1766                                 case STANDARD_CXX98: c_mode = _CXX; break;
1767
1768 default_cxx_warn:
1769                                         fprintf(stderr,
1770                                                         "warning: command line option \"-std=%s\" is not valid for C++\n",
1771                                                         invalid_mode);
1772                                 case STANDARD_DEFAULT:
1773                                 case STANDARD_GNUXX98: c_mode = _CXX | _GNUC; break;
1774                         }
1775
1776 do_parsing:
1777                         c_mode |= features_on;
1778                         c_mode &= ~features_off;
1779
1780                         /* do the actual parsing */
1781                         ir_timer_t *t_parsing = ir_timer_new();
1782                         timer_register(t_parsing, "Frontend: Parsing");
1783                         timer_push(t_parsing);
1784                         init_tokens();
1785                         translation_unit_t *const unit = do_parsing(in, filename);
1786                         timer_pop(t_parsing);
1787
1788                         /* prints the AST even if errors occurred */
1789                         if (mode == PrintAst) {
1790                                 print_to_file(out);
1791                                 print_ast(unit);
1792                         }
1793
1794                         if (error_count > 0) {
1795                                 /* parsing failed because of errors */
1796                                 fprintf(stderr, "%u error(s), %u warning(s)\n", error_count,
1797                                         warning_count);
1798                                 result = EXIT_FAILURE;
1799                                 continue;
1800                         } else if (warning_count > 0) {
1801                                 fprintf(stderr, "%u warning(s)\n", warning_count);
1802                         }
1803
1804                         if (in == preprocessed_in) {
1805                                 int pp_result = pclose(preprocessed_in);
1806                                 if (pp_result != EXIT_SUCCESS) {
1807                                         /* remove output file */
1808                                         if (out != stdout)
1809                                                 unlink(outname);
1810                                         return EXIT_FAILURE;
1811                                 }
1812                         }
1813
1814                         if (mode == BenchmarkParser) {
1815                                 return result;
1816                         } else if (mode == PrintFluffy) {
1817                                 write_fluffy_decls(out, unit);
1818                                 continue;
1819                         } else if (mode == PrintJna) {
1820                                 write_jna_decls(out, unit);
1821                                 continue;
1822                         }
1823
1824                         /* build the firm graph */
1825                         ir_timer_t *t_construct = ir_timer_new();
1826                         timer_register(t_construct, "Frontend: Graph construction");
1827                         timer_push(t_construct);
1828                         if (already_constructed_firm) {
1829                                 panic("compiling multiple files/translation units not possible");
1830                         }
1831                         translation_unit_to_firm(unit);
1832                         already_constructed_firm = true;
1833                         timer_pop(t_construct);
1834
1835 graph_built:
1836                         if (mode == ParseOnly) {
1837                                 continue;
1838                         }
1839
1840                         if (mode == CompileDump) {
1841                                 /* find irg */
1842                                 ident    *id     = new_id_from_str(dumpfunction);
1843                                 ir_graph *irg    = NULL;
1844                                 int       n_irgs = get_irp_n_irgs();
1845                                 for (int i = 0; i < n_irgs; ++i) {
1846                                         ir_graph *tirg   = get_irp_irg(i);
1847                                         ident    *irg_id = get_entity_ident(get_irg_entity(tirg));
1848                                         if (irg_id == id) {
1849                                                 irg = tirg;
1850                                                 break;
1851                                         }
1852                                 }
1853
1854                                 if (irg == NULL) {
1855                                         fprintf(stderr, "No graph for function '%s' found\n",
1856                                                 dumpfunction);
1857                                         return EXIT_FAILURE;
1858                                 }
1859
1860                                 dump_ir_graph_file(out, irg);
1861                                 fclose(out);
1862                                 return EXIT_SUCCESS;
1863                         }
1864
1865                         if (mode == CompileExportIR) {
1866                                 fclose(out);
1867                                 ir_export(outname);
1868                                 return EXIT_SUCCESS;
1869                         }
1870
1871                         gen_firm_finish(asm_out, filename);
1872                         if (asm_out != out) {
1873                                 fclose(asm_out);
1874                         }
1875                 } else if (filetype == FILETYPE_IR) {
1876                         fclose(in);
1877                         ir_import(filename);
1878                         goto graph_built;
1879                 } else if (filetype == FILETYPE_PREPROCESSED_ASSEMBLER) {
1880                         copy_file(asm_out, in);
1881                         if (in == preprocessed_in) {
1882                                 int pp_result = pclose(preprocessed_in);
1883                                 if (pp_result != EXIT_SUCCESS) {
1884                                         /* remove output in error case */
1885                                         if (out != stdout)
1886                                                 unlink(outname);
1887                                         return pp_result;
1888                                 }
1889                         }
1890                         if (asm_out != out) {
1891                                 fclose(asm_out);
1892                         }
1893                 }
1894
1895                 if (mode == Compile)
1896                         continue;
1897
1898                 /* if we're here then we have preprocessed assembly */
1899                 filename = asm_tempfile;
1900                 filetype = FILETYPE_PREPROCESSED_ASSEMBLER;
1901
1902                 /* assemble */
1903                 if (filetype == FILETYPE_PREPROCESSED_ASSEMBLER) {
1904                         char        temp[1024];
1905                         const char *filename_o;
1906                         if (mode == CompileAssemble) {
1907                                 fclose(out);
1908                                 filename_o = outname;
1909                         } else {
1910                                 FILE *tempf = make_temp_file(temp, sizeof(temp), "cco");
1911                                 fclose(tempf);
1912                                 filename_o = temp;
1913                         }
1914
1915                         assemble(filename_o, filename);
1916
1917                         size_t len = strlen(filename_o) + 1;
1918                         filename = obstack_copy(&file_obst, filename_o, len);
1919                         filetype = FILETYPE_OBJECT;
1920                 }
1921
1922                 /* ok we're done here, process next file */
1923                 file->name = filename;
1924                 file->type = filetype;
1925         }
1926
1927         if (result != EXIT_SUCCESS) {
1928                 if (out != stdout)
1929                         unlink(outname);
1930                 return result;
1931         }
1932
1933         /* link program file */
1934         if (mode == CompileAssembleLink) {
1935                 obstack_1grow(&ldflags_obst, '\0');
1936                 const char *flags = obstack_finish(&ldflags_obst);
1937
1938                 /* construct commandline */
1939                 const char *linker = getenv("CPARSER_LINK");
1940                 if (linker != NULL) {
1941                         obstack_printf(&file_obst, "%s ", linker);
1942                 } else {
1943                         if (target_triple != NULL)
1944                                 obstack_printf(&file_obst, "%s-", target_triple);
1945                         obstack_printf(&file_obst, "%s ", LINKER);
1946                 }
1947
1948                 for (file_list_entry_t *entry = files; entry != NULL;
1949                                 entry = entry->next) {
1950                         if (entry->type != FILETYPE_OBJECT)
1951                                 continue;
1952
1953                         add_flag(&file_obst, "%s", entry->name);
1954                 }
1955
1956                 add_flag(&file_obst, "-o");
1957                 add_flag(&file_obst, outname);
1958                 obstack_printf(&file_obst, "%s", flags);
1959                 obstack_1grow(&file_obst, '\0');
1960
1961                 char *commandline = obstack_finish(&file_obst);
1962
1963                 if (verbose) {
1964                         puts(commandline);
1965                 }
1966                 int err = system(commandline);
1967                 if (err != EXIT_SUCCESS) {
1968                         fprintf(stderr, "linker reported an error\n");
1969                         return EXIT_FAILURE;
1970                 }
1971         }
1972
1973         if (do_timing)
1974                 timer_term(stderr);
1975
1976         obstack_free(&cppflags_obst, NULL);
1977         obstack_free(&ldflags_obst, NULL);
1978         obstack_free(&asflags_obst, NULL);
1979         obstack_free(&file_obst, NULL);
1980
1981         exit_mangle();
1982         exit_ast2firm();
1983         exit_parser();
1984         exit_ast();
1985         exit_lexer();
1986         exit_typehash();
1987         exit_types();
1988         exit_tokens();
1989         exit_symbol_table();
1990         return EXIT_SUCCESS;
1991 }