nsz Git - cparser/blob - main.c

   1 /*
   2  * This file is part of cparser.
   3  * Copyright (C) 2007-2009 Matthias Braun <matze@braunis.de>
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License
   7  * as published by the Free Software Foundation; either version 2
   8  * of the License, or (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  18  * 02111-1307, USA.
  19  */
  20 #include <config.h>
  21
  22 #define _GNU_SOURCE
  23
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26 #include <stdbool.h>
  27 #include <errno.h>
  28 #include <string.h>
  29 #include <assert.h>
  30
  31 #ifdef _WIN32
  32
  33 #include <fcntl.h>
  34 #include <io.h>
  35
  36 /* no eXecute on Win32 */
  37 #define X_OK 0
  38 #define W_OK 2
  39 #define R_OK 4
  40
  41 #define O_RDWR          _O_RDWR
  42 #define O_CREAT         _O_CREAT
  43 #define O_EXCL          _O_EXCL
  44 #define O_BINARY        _O_BINARY
  45
  46 /* remap some names, we are not in the POSIX world */
  47 #define access(fname, mode)      _access(fname, mode)
  48 #define mktemp(tmpl)             _mktemp(tmpl)
  49 #define open(fname, oflag, mode) _open(fname, oflag, mode)
  50 #define fdopen(fd, mode)         _fdopen(fd, mode)
  51 #define popen(cmd, mode)         _popen(cmd, mode)
  52 #define pclose(file)             _pclose(file)
  53 #define unlink(filename)         _unlink(filename)
  54
  55 #else
  56 #include <unistd.h>
  57 #define HAVE_MKSTEMP
  58 #endif
  59
  60 #include <libfirm/firm.h>
  61 #include <libfirm/be.h>
  62
  63 #include "lexer.h"
  64 #include "token_t.h"
  65 #include "types.h"
  66 #include "type_hash.h"
  67 #include "parser.h"
  68 #include "type_t.h"
  69 #include "ast2firm.h"
  70 #include "diagnostic.h"
  71 #include "lang_features.h"
  72 #include "driver/firm_opt.h"
  73 #include "driver/firm_timing.h"
  74 #include "driver/firm_machine.h"
  75 #include "adt/error.h"
  76 #include "adt/strutil.h"
  77 #include "wrappergen/write_fluffy.h"
  78 #include "wrappergen/write_jna.h"
  79 #include "revision.h"
  80 #include "warning.h"
  81 #include "help.h"
  82 #include "mangle.h"
  83 #include "printer.h"
  84
  85 #ifndef PREPROCESSOR
  86 #ifndef __WIN32__
  87 #define PREPROCESSOR "gcc -E -U__STRICT_ANSI__"
  88 #else
  89 #define PREPROCESSOR "cpp -U__STRICT_ANSI__"
  90 #endif
  91 #endif
  92
  93 #ifndef LINKER
  94 #define LINKER    "gcc"
  95 #endif
  96
  97 #ifndef ASSEMBLER
  98 #define ASSEMBLER "gcc -c -xassembler"
  99 #endif
 100
 101 unsigned int        c_mode                    = _C89 | _ANSI | _C99 | _GNUC;
 102 bool                byte_order_big_endian     = false;
 103 bool                strict_mode               = false;
 104 bool                enable_main_collect2_hack = false;
 105 bool                freestanding              = false;
 106 unsigned            architecture_modulo_shift = 0;
 107
 108 static bool               char_is_signed      = true;
 109 static atomic_type_kind_t wchar_atomic_kind   = ATOMIC_TYPE_INT;
 110
 111 static machine_triple_t *target_machine;
 112 static const char       *target_triple;
 113 static int               verbose;
 114 static struct obstack    cppflags_obst;
 115 static struct obstack    ldflags_obst;
 116 static struct obstack    asflags_obst;
 117 static char              dep_target[1024];
 118 static const char       *outname;
 119 static bool              define_intmax_types;
 120 static const char       *input_encoding;
 121
 122 typedef enum lang_standard_t {
 123         STANDARD_DEFAULT, /* gnu99 (for C, GCC does gnu89) or gnu++98 (for C++) */
 124         STANDARD_ANSI,    /* c89 (for C) or c++98 (for C++) */
 125         STANDARD_C89,     /* ISO C90 (sic) */
 126         STANDARD_C90,     /* ISO C90 as modified in amendment 1 */
 127         STANDARD_C99,     /* ISO C99 */
 128         STANDARD_GNU89,   /* ISO C90 plus GNU extensions (including some C99) */
 129         STANDARD_GNU99,   /* ISO C99 plus GNU extensions */
 130         STANDARD_CXX98,   /* ISO C++ 1998 plus amendments */
 131         STANDARD_GNUXX98  /* ISO C++ 1998 plus amendments and GNU extensions */
 132 } lang_standard_t;
 133
 134 static lang_standard_t standard;
 135
 136 typedef struct file_list_entry_t file_list_entry_t;
 137
 138 typedef enum filetype_t {
 139         FILETYPE_AUTODETECT,
 140         FILETYPE_C,
 141         FILETYPE_PREPROCESSED_C,
 142         FILETYPE_CXX,
 143         FILETYPE_PREPROCESSED_CXX,
 144         FILETYPE_ASSEMBLER,
 145         FILETYPE_PREPROCESSED_ASSEMBLER,
 146         FILETYPE_OBJECT,
 147         FILETYPE_IR,
 148         FILETYPE_UNKNOWN
 149 } filetype_t;
 150
 151 struct file_list_entry_t {
 152         const char  *name; /**< filename or NULL for stdin */
 153         filetype_t   type;
 154         file_list_entry_t *next;
 155 };
 156
 157 static file_list_entry_t *temp_files;
 158
 159 static void get_output_name(char *buf, size_t buflen, const char *inputname,
 160                             const char *newext)
 161 {
 162         if (inputname == NULL)
 163                 inputname = "a";
 164
 165         char const *const last_slash = strrchr(inputname, '/');
 166         char const *const filename   =
 167                 last_slash != NULL ? last_slash + 1 : inputname;
 168         char const *const last_dot   = strrchr(filename, '.');
 169         char const *const name_end   =
 170                 last_dot != NULL ? last_dot : strchr(filename, '\0');
 171
 172         int const len = snprintf(buf, buflen, "%.*s%s",
 173                         (int)(name_end - filename), filename, newext);
 174 #ifdef _WIN32
 175         if (len < 0 || buflen <= (size_t)len)
 176 #else
 177         if (buflen <= (size_t)len)
 178 #endif
 179                 panic("filename too long");
 180 }
 181
 182 static translation_unit_t *do_parsing(FILE *const in, const char *const input_name)
 183 {
 184         start_parsing();
 185
 186         input_t *input = input_from_stream(in, input_encoding);
 187         lexer_switch_input(input, input_name);
 188         parse();
 189         translation_unit_t *unit = finish_parsing();
 190         input_free(input);
 191
 192         return unit;
 193 }
 194
 195 static void lextest(FILE *in, const char *fname)
 196 {
 197         input_t *input = input_from_stream(in, input_encoding);
 198         lexer_switch_input(input, fname);
 199
 200         do {
 201                 lexer_next_preprocessing_token();
 202                 print_token(stdout, &lexer_token);
 203                 putchar('\n');
 204         } while (lexer_token.kind != T_EOF);
 205         input_free(input);
 206 }
 207
 208 static void add_flag(struct obstack *obst, const char *format, ...)
 209 {
 210         char buf[65536];
 211         va_list ap;
 212
 213         va_start(ap, format);
 214 #ifdef _WIN32
 215         int len =
 216 #endif
 217                 vsnprintf(buf, sizeof(buf), format, ap);
 218         va_end(ap);
 219
 220         obstack_1grow(obst, ' ');
 221 #ifdef _WIN32
 222         obstack_1grow(obst, '"');
 223         obstack_grow(obst, buf, len);
 224         obstack_1grow(obst, '"');
 225 #else
 226         /* escape stuff... */
 227         for (char *c = buf; *c != '\0'; ++c) {
 228                 switch(*c) {
 229                 case ' ':
 230                 case '"':
 231                 case '$':
 232                 case '&':
 233                 case '(':
 234                 case ')':
 235                 case ';':
 236                 case '<':
 237                 case '>':
 238                 case '\'':
 239                 case '\\':
 240                 case '\n':
 241                 case '\r':
 242                 case '\t':
 243                 case '`':
 244                 case '|':
 245                         obstack_1grow(obst, '\\');
 246                         /* FALLTHROUGH */
 247                 default:
 248                         obstack_1grow(obst, *c);
 249                         break;
 250                 }
 251         }
 252 #endif
 253 }
 254
 255 static const char *type_to_string(type_t *type)
 256 {
 257         assert(type->kind == TYPE_ATOMIC);
 258         return get_atomic_kind_name(type->atomic.akind);
 259 }
 260
 261 static FILE *preprocess(const char *fname, filetype_t filetype)
 262 {
 263         static const char *common_flags = NULL;
 264
 265         if (common_flags == NULL) {
 266                 obstack_1grow(&cppflags_obst, '\0');
 267                 const char *flags = obstack_finish(&cppflags_obst);
 268
 269                 /* setup default defines */
 270                 add_flag(&cppflags_obst, "-U__WCHAR_TYPE__");
 271                 add_flag(&cppflags_obst, "-D__WCHAR_TYPE__=%s", type_to_string(type_wchar_t));
 272                 add_flag(&cppflags_obst, "-U__SIZE_TYPE__");
 273                 add_flag(&cppflags_obst, "-D__SIZE_TYPE__=%s", type_to_string(type_size_t));
 274
 275                 add_flag(&cppflags_obst, "-U__VERSION__");
 276                 add_flag(&cppflags_obst, "-D__VERSION__=\"%s\"", cparser_REVISION);
 277
 278                 if (define_intmax_types) {
 279                         add_flag(&cppflags_obst, "-U__INTMAX_TYPE__");
 280                         add_flag(&cppflags_obst, "-D__INTMAX_TYPE__=%s", type_to_string(type_intmax_t));
 281                         add_flag(&cppflags_obst, "-U__UINTMAX_TYPE__");
 282                         add_flag(&cppflags_obst, "-D__UINTMAX_TYPE__=%s", type_to_string(type_uintmax_t));
 283                 }
 284
 285                 if (flags[0] != '\0') {
 286                         size_t len = strlen(flags);
 287                         obstack_1grow(&cppflags_obst, ' ');
 288                         obstack_grow(&cppflags_obst, flags, len);
 289                 }
 290                 obstack_1grow(&cppflags_obst, '\0');
 291                 common_flags = obstack_finish(&cppflags_obst);
 292         }
 293
 294         assert(obstack_object_size(&cppflags_obst) == 0);
 295
 296         const char *preprocessor = getenv("CPARSER_PP");
 297         if (preprocessor != NULL) {
 298                 obstack_printf(&cppflags_obst, "%s ", preprocessor);
 299         } else {
 300                 if (target_triple != NULL)
 301                         obstack_printf(&cppflags_obst, "%s-", target_triple);
 302                 obstack_printf(&cppflags_obst, PREPROCESSOR);
 303         }
 304
 305         switch (filetype) {
 306         case FILETYPE_C:
 307                 add_flag(&cppflags_obst, "-std=c99");
 308                 break;
 309         case FILETYPE_CXX:
 310                 add_flag(&cppflags_obst, "-std=c++98");
 311                 break;
 312         case FILETYPE_ASSEMBLER:
 313                 add_flag(&cppflags_obst, "-x");
 314                 add_flag(&cppflags_obst, "assembler-with-cpp");
 315                 break;
 316         default:
 317                 break;
 318         }
 319         obstack_printf(&cppflags_obst, "%s", common_flags);
 320
 321         /* handle dependency generation */
 322         if (dep_target[0] != '\0') {
 323                 add_flag(&cppflags_obst, "-MF");
 324                 add_flag(&cppflags_obst, dep_target);
 325                 if (outname != NULL) {
 326                         add_flag(&cppflags_obst, "-MQ");
 327                         add_flag(&cppflags_obst, outname);
 328                 }
 329         }
 330         add_flag(&cppflags_obst, fname);
 331         obstack_1grow(&cppflags_obst, '\0');
 332
 333         char *commandline = obstack_finish(&cppflags_obst);
 334         if (verbose) {
 335                 puts(commandline);
 336         }
 337         FILE *f = popen(commandline, "r");
 338         if (f == NULL) {
 339                 fprintf(stderr, "invoking preprocessor failed\n");
 340                 exit(EXIT_FAILURE);
 341         }
 342         /* we do not really need that anymore */
 343         obstack_free(&cppflags_obst, commandline);
 344
 345         return f;
 346 }
 347
 348 static void assemble(const char *out, const char *in)
 349 {
 350         obstack_1grow(&asflags_obst, '\0');
 351         const char *flags = obstack_finish(&asflags_obst);
 352
 353         const char *assembler = getenv("CPARSER_AS");
 354         if (assembler != NULL) {
 355                 obstack_printf(&asflags_obst, "%s", assembler);
 356         } else {
 357                 if (target_triple != NULL)
 358                         obstack_printf(&asflags_obst, "%s-", target_triple);
 359                 obstack_printf(&asflags_obst, "%s", ASSEMBLER);
 360         }
 361         if (flags[0] != '\0')
 362                 obstack_printf(&asflags_obst, " %s", flags);
 363
 364         obstack_printf(&asflags_obst, " %s -o %s", in, out);
 365         obstack_1grow(&asflags_obst, '\0');
 366
 367         char *commandline = obstack_finish(&asflags_obst);
 368         if (verbose) {
 369                 puts(commandline);
 370         }
 371         int err = system(commandline);
 372         if (err != EXIT_SUCCESS) {
 373                 fprintf(stderr, "assembler reported an error\n");
 374                 exit(EXIT_FAILURE);
 375         }
 376         obstack_free(&asflags_obst, commandline);
 377 }
 378
 379 static void print_file_name(const char *file)
 380 {
 381         add_flag(&ldflags_obst, "-print-file-name=%s", file);
 382
 383         obstack_1grow(&ldflags_obst, '\0');
 384         const char *flags = obstack_finish(&ldflags_obst);
 385
 386         /* construct commandline */
 387         const char *linker = getenv("CPARSER_LINK");
 388         if (linker != NULL) {
 389                 obstack_printf(&ldflags_obst, "%s ", linker);
 390         } else {
 391                 if (target_triple != NULL)
 392                         obstack_printf(&ldflags_obst, "%s-", target_triple);
 393                 obstack_printf(&ldflags_obst, "%s ", LINKER);
 394         }
 395         obstack_printf(&ldflags_obst, "%s ", linker);
 396         obstack_printf(&ldflags_obst, "%s", flags);
 397         obstack_1grow(&ldflags_obst, '\0');
 398
 399         char *commandline = obstack_finish(&ldflags_obst);
 400         if (verbose) {
 401                 puts(commandline);
 402         }
 403         int err = system(commandline);
 404         if (err != EXIT_SUCCESS) {
 405                 fprintf(stderr, "linker reported an error\n");
 406                 exit(EXIT_FAILURE);
 407         }
 408         obstack_free(&ldflags_obst, commandline);
 409 }
 410
 411 static const char *try_dir(const char *dir)
 412 {
 413         if (dir == NULL)
 414                 return dir;
 415         if (access(dir, R_OK | W_OK | X_OK) == 0)
 416                 return dir;
 417         return NULL;
 418 }
 419
 420 static const char *get_tempdir(void)
 421 {
 422         static const char *tmpdir = NULL;
 423
 424         if (tmpdir != NULL)
 425                 return tmpdir;
 426
 427         if (tmpdir == NULL)
 428                 tmpdir = try_dir(getenv("TMPDIR"));
 429         if (tmpdir == NULL)
 430                 tmpdir = try_dir(getenv("TMP"));
 431         if (tmpdir == NULL)
 432                 tmpdir = try_dir(getenv("TEMP"));
 433
 434 #ifdef P_tmpdir
 435         if (tmpdir == NULL)
 436                 tmpdir = try_dir(P_tmpdir);
 437 #endif
 438
 439         if (tmpdir == NULL)
 440                 tmpdir = try_dir("/var/tmp");
 441         if (tmpdir == NULL)
 442                 tmpdir = try_dir("/usr/tmp");
 443         if (tmpdir == NULL)
 444                 tmpdir = try_dir("/tmp");
 445
 446         if (tmpdir == NULL)
 447                 tmpdir = ".";
 448
 449         return tmpdir;
 450 }
 451
 452 #ifndef HAVE_MKSTEMP
 453 /* cheap and nasty mkstemp replacement */
 454 static int mkstemp(char *templ)
 455 {
 456         mktemp(templ);
 457         return open(templ, O_RDWR|O_CREAT|O_EXCL|O_BINARY, 0600);
 458 }
 459 #endif
 460
 461 /**
 462  * an own version of tmpnam, which: writes in a buffer, emits no warnings
 463  * during linking (like glibc/gnu ld do for tmpnam)...
 464  */
 465 static FILE *make_temp_file(char *buffer, size_t buflen, const char *prefix)
 466 {
 467         const char *tempdir = get_tempdir();
 468
 469         snprintf(buffer, buflen, "%s/%sXXXXXX", tempdir, prefix);
 470
 471         int fd = mkstemp(buffer);
 472         if (fd == -1) {
 473                 fprintf(stderr, "could not create temporary file: %s\n",
 474                         strerror(errno));
 475                 exit(EXIT_FAILURE);
 476         }
 477         FILE *out = fdopen(fd, "w");
 478         if (out == NULL) {
 479                 fprintf(stderr, "could not create temporary file FILE*\n");
 480                 exit(EXIT_FAILURE);
 481         }
 482
 483         file_list_entry_t *entry = xmalloc(sizeof(*entry));
 484         memset(entry, 0, sizeof(*entry));
 485
 486         size_t  name_len = strlen(buffer) + 1;
 487         char   *name     = malloc(name_len);
 488         memcpy(name, buffer, name_len);
 489         entry->name      = name;
 490
 491         entry->next = temp_files;
 492         temp_files  = entry;
 493
 494         return out;
 495 }
 496
 497 static void free_temp_files(void)
 498 {
 499         file_list_entry_t *entry = temp_files;
 500         file_list_entry_t *next;
 501         for ( ; entry != NULL; entry = next) {
 502                 next = entry->next;
 503
 504                 unlink(entry->name);
 505                 free((char*) entry->name);
 506                 free(entry);
 507         }
 508         temp_files = NULL;
 509 }
 510
 511 typedef enum compile_mode_t {
 512         BenchmarkParser,
 513         PreprocessOnly,
 514         ParseOnly,
 515         Compile,
 516         CompileDump,
 517         CompileExportIR,
 518         CompileAssemble,
 519         CompileAssembleLink,
 520         LexTest,
 521         PrintAst,
 522         PrintFluffy,
 523         PrintJna
 524 } compile_mode_t;
 525
 526 static void usage(const char *argv0)
 527 {
 528         fprintf(stderr, "Usage %s [options] input [-o output]\n", argv0);
 529 }
 530
 531 static void print_cparser_version(void)
 532 {
 533         printf("cparser (%s) using libFirm (%u.%u",
 534                cparser_REVISION, ir_get_version_major(),
 535                ir_get_version_minor());
 536
 537         const char *revision = ir_get_version_revision();
 538         if (revision[0] != 0) {
 539                 putchar('-');
 540                 fputs(revision, stdout);
 541         }
 542
 543         const char *build = ir_get_version_build();
 544         if (build[0] != 0) {
 545                 putchar(' ');
 546                 fputs(build, stdout);
 547         }
 548         puts(")");
 549         puts("This is free software; see the source for copying conditions.  There is NO\n"
 550              "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n");
 551 }
 552
 553 static void print_cparser_version_short(void)
 554 {
 555         puts(cparser_REVISION);
 556 }
 557
 558 static void print_help_basic(const char *argv0)
 559 {
 560         usage(argv0);
 561         puts("");
 562         put_help("--help",                   "Display this information");
 563         put_help("--version",                "Display compiler version");
 564         put_help("--help-parser",            "Display information about parser options");
 565         put_help("--help-warnings",          "Display information about warning options");
 566         put_help("--help-codegen",           "Display information about code-generation options");
 567         put_help("--help-optimization",      "Display information about optimization options");
 568         put_help("--help-linker",            "Display information about linker options");
 569         put_help("--help-language-tools",    "Display information about language tools options");
 570         put_help("--help-debug",             "Display information about compiler debugging options");
 571         put_help("--help-firm",              "Display information about direct firm options");
 572         put_help("--help-all",               "Display information about all options");
 573         put_help("-c",                       "Compile and assemble but do not link");
 574         put_help("-E",                       "Preprocess only");
 575         put_help("-S",                       "Compile but do not assembler or link");
 576         put_help("-o",                       "Specify output file");
 577         put_help("-v",                       "Verbose output (show invocation of sub-processes)");
 578         put_help("-x",                       "Force input language:");
 579         put_choice("c",                      "C");
 580         put_choice("c++",                    "C++");
 581         put_choice("assembler",              "Assembler (no preprocessing)");
 582         put_choice("assembler-with-cpp",     "Assembler with preprocessing");
 583         put_choice("none",                   "Autodetection");
 584         put_help("-pipe",                    "Ignored (gcc compatibility)");
 585 }
 586
 587 static void print_help_preprocessor(void)
 588 {
 589         put_help("-nostdinc",                "Do not search standard system include directories");
 590         put_help("-trigraphs",               "Support ISO C trigraphs");
 591         put_help("-isystem",                 "");
 592         put_help("-include",                 "");
 593         put_help("-I PATH",                  "");
 594         put_help("-D SYMBOL[=value]",        "");
 595         put_help("-U SYMBOL",                "");
 596         put_help("-Wp,OPTION",               "Pass option directly to preprocessor");
 597         put_help("-M",                       "");
 598         put_help("-MD",                      "");
 599         put_help("-MMD",                     "");
 600         put_help("-MM",                      "");
 601         put_help("-MP",                      "");
 602         put_help("-MT",                      "");
 603         put_help("-MQ",                      "");
 604         put_help("-MF",                      "");
 605 }
 606
 607 static void print_help_parser(void)
 608 {
 609         put_help("-finput-charset=CHARSET",  "Select encoding of input files");
 610         put_help("-fmessage-length=LEN",     "Ignored (gcc compatibility)");
 611         put_help("-fshort-wchar",            "Type \"wchar_t\" is unsigned short instead of int");
 612         put_help("-fshow-column",            "Show the column number in diagnostic messages");
 613         put_help("-fsigned-char",            "Type \"char\" is a signed type");
 614         put_help("-funsigned-char",          "Type \"char\" is an unsigned type");
 615         put_help("--ms",                     "Enable msvc extensions");
 616         put_help("--no-ms",                  "Disable msvc extensions");
 617         put_help("--gcc",                    "Enable gcc extensions");
 618         put_help("--no-gcc",                 "Disable gcc extensions");
 619         put_help("-std=STANDARD",            "Specify language standard:");
 620         put_choice("c99",                    "ISO C99 standard");
 621         put_choice("c89",                    "ISO C89 standard");
 622         put_choice("c9x",                    "Deprecated");
 623         put_choice("c++",                    "ISO C++ 98");
 624         put_choice("c++98",                  "ISO C++ 98");
 625         put_choice("gnu99",                  "ISO C99 + GNU extensions (default)");
 626         put_choice("gnu89",                  "ISO C89 + GNU extensions");
 627         put_choice("gnu9x",                  "Deprecated");
 628         put_choice("iso9899:1990",           "ISO C89");
 629         put_choice("iso9899:199409",         "ISO C90");
 630         put_choice("iso9899:1999",           "ISO C99");
 631         put_choice("iso9899:199x",           "Deprecated");
 632         put_help("-pedantic",                "Ignored (gcc compatibility)");
 633         put_help("-ansi",                    "Ignored (gcc compatibility)");
 634         put_help("--strict",                 "Enable strict conformance checking");
 635 }
 636
 637 static void print_help_warnings(void)
 638 {
 639         put_help("-f[no-]diagnostics-show-option", "Show the switch, which controls a warning, after each warning");
 640         put_help("-w",                             "Disable all warnings");
 641         put_help("-Wno-trigraphs",                 "Warn if input contains trigraphs");
 642         put_help("-Wundef",                        "Warn if an undefined macro is used in an #if");
 643         put_help("-Wmissing-include-dirs",         "Warn about missing user-specified include directories");
 644         put_help("-Wendif-labels",                 "Warn about stray text after #elif and #endif");
 645         put_help("-Winit-self",                    "Ignored (gcc compatibility)");
 646         put_help("-Wformat-y2k",                   "Ignored (gcc compatibility)");
 647         put_help("-Wformat-security",              "Ignored (gcc compatibility)");
 648         put_help("-Wold-style-declaration",        "Ignored (gcc compatibility)");
 649         put_help("-Wtype-limits",                  "Ignored (gcc compatibility)");
 650         print_warning_opt_help();
 651 }
 652
 653 static void print_help_optimization(void)
 654 {
 655         put_help("-O LEVEL",                 "Select optimization level (0-4)");
 656         firm_option_help(put_help);
 657         put_help("-fexpensive-optimizations","Ignored (gcc compatibility)");
 658 }
 659
 660 static void print_help_codegeneration(void)
 661 {
 662         put_help("-g",                       "Generate debug information");
 663         put_help("-pg",                      "Instrument code for gnu gprof");
 664         put_help("-fomit-frame-pointer",     "Produce code without frame pointer where possible");
 665         put_help("-ffreestanding",           "Compile in freestanding mode (see ISO C standard)");
 666         put_help("-fhosted",                 "Compile in hosted (not freestanding) mode");
 667         put_help("-fprofile-generate",       "Generate instrumented code to collect profile information");
 668         put_help("-fprofile-use",            "Use profile information generated by instrumented binaries");
 669         put_help("-ffp-precise",             "Precise floating point model");
 670         put_help("-ffp-fast",                "Imprecise floating point model");
 671         put_help("-ffp-strict",              "Strict floating point model");
 672         put_help("-pthread",                 "Use pthread threading library");
 673         put_help("-mtarget=TARGET",          "Specify target architecture as CPU-manufacturer-OS triple");
 674         put_help("-mtriple=TARGET",          "Alias for -mtarget (clang compatibility)");
 675         put_help("-march=ARCH",              "");
 676         put_help("-mtune=ARCH",              "");
 677         put_help("-mcpu=CPU",                "");
 678         put_help("-mfpmath=",                "");
 679         put_help("-mpreferred-stack-boundary=", "");
 680         put_help("-mrtd",                    "");
 681         put_help("-mregparm=",               "Not supported yet");
 682         put_help("-msoft-float",             "Not supported yet");
 683         put_help("-m32",                     "Generate 32bit code");
 684         put_help("-m64",                     "Generate 64bit code");
 685         put_help("-fverbose-asm",            "Ignored (gcc compatibility)");
 686         put_help("-fjump-tables",            "Ignored (gcc compatibility)");
 687         put_help("-fcommon",                 "Ignored (gcc compatibility)");
 688         put_help("-foptimize-sibling-calls", "Ignored (gcc compatibility)");
 689         put_help("-falign-loops",            "Ignored (gcc compatibility)");
 690         put_help("-falign-jumps",            "Ignored (gcc compatibility)");
 691         put_help("-falign-functions",        "Ignored (gcc compatibility)");
 692         put_help("-fPIC",                    "Ignored (gcc compatibility)");
 693         put_help("-ffast-math",              "Same as -ffp-fast (gcc compatibility)");
 694         puts("");
 695         puts("\tMost of these options can be used with a no- prefix to disable them");
 696         puts("\te.g. -fno-omit-frame-pointer");
 697 }
 698
 699 static void print_help_linker(void)
 700 {
 701         put_help("-l LIBRARY",               "");
 702         put_help("-L PATH",                  "");
 703         put_help("-s",                       "Do not produce symbol table and relocation information");
 704         put_help("-shared",                  "Produce a shared library");
 705         put_help("-static",                  "Produce statically linked binary");
 706         put_help("-Wl,OPTION",               "Pass option directly to linker");
 707 }
 708
 709 static void print_help_debug(void)
 710 {
 711         put_help("--lextest",                "Preprocess and tokenize only");
 712         put_help("--print-ast",              "Preprocess, parse and print AST");
 713         put_help("--print-implicit-cast",    "");
 714         put_help("--print-parenthesis",      "");
 715         put_help("--benchmark",              "Preprocess and parse, produces no output");
 716         put_help("--time",                   "Measure time of compiler passes");
 717         put_help("--dump-function func",     "Preprocess, parse and output vcg graph of func");
 718         put_help("--export-ir",              "Preprocess, parse and output compiler intermediate representation");
 719 }
 720
 721 static void print_help_language_tools(void)
 722 {
 723         put_help("--print-fluffy",           "Preprocess, parse and generate declarations for the fluffy language");
 724         put_help("--print-jna",              "Preprocess, parse and generate declarations for JNA");
 725         put_help("--jna-limit filename",     "");
 726         put_help("--jna-libname name",       "");
 727 }
 728
 729 static void print_help_firm(void)
 730 {
 731         put_help("-bOPTION",                 "Directly pass option to libFirm backend");
 732         int res = be_parse_arg("help");
 733         (void) res;
 734         assert(res);
 735 }
 736
 737 typedef enum {
 738         HELP_NONE          = 0,
 739         HELP_BASIC         = 1 << 0,
 740         HELP_PREPROCESSOR  = 1 << 1,
 741         HELP_PARSER        = 1 << 2,
 742         HELP_WARNINGS      = 1 << 3,
 743         HELP_OPTIMIZATION  = 1 << 4,
 744         HELP_CODEGEN       = 1 << 5,
 745         HELP_LINKER        = 1 << 6,
 746         HELP_LANGUAGETOOLS = 1 << 7,
 747         HELP_DEBUG         = 1 << 8,
 748         HELP_FIRM          = 1 << 9,
 749
 750         HELP_ALL           = -1
 751 } help_sections_t;
 752
 753 static void print_help(const char *argv0, help_sections_t sections)
 754 {
 755         if (sections & HELP_BASIC)         print_help_basic(argv0);
 756         if (sections & HELP_PREPROCESSOR)  print_help_preprocessor();
 757         if (sections & HELP_PARSER)        print_help_parser();
 758         if (sections & HELP_WARNINGS)      print_help_warnings();
 759         if (sections & HELP_OPTIMIZATION)  print_help_optimization();
 760         if (sections & HELP_CODEGEN)       print_help_codegeneration();
 761         if (sections & HELP_LINKER)        print_help_linker();
 762         if (sections & HELP_LANGUAGETOOLS) print_help_language_tools();
 763         if (sections & HELP_DEBUG)         print_help_debug();
 764         if (sections & HELP_FIRM)          print_help_firm();
 765 }
 766
 767 static void set_be_option(const char *arg)
 768 {
 769         int res = be_parse_arg(arg);
 770         (void) res;
 771         assert(res);
 772 }
 773
 774 static void copy_file(FILE *dest, FILE *input)
 775 {
 776         char buf[16384];
 777
 778         while (!feof(input) && !ferror(dest)) {
 779                 size_t read = fread(buf, 1, sizeof(buf), input);
 780                 if (fwrite(buf, 1, read, dest) != read) {
 781                         perror("could not write output");
 782                 }
 783         }
 784 }
 785
 786 static FILE *open_file(const char *filename)
 787 {
 788         if (streq(filename, "-")) {
 789                 return stdin;
 790         }
 791
 792         FILE *in = fopen(filename, "r");
 793         if (in == NULL) {
 794                 fprintf(stderr, "Could not open '%s': %s\n", filename,
 795                                 strerror(errno));
 796                 exit(EXIT_FAILURE);
 797         }
 798
 799         return in;
 800 }
 801
 802 static filetype_t get_filetype_from_string(const char *string)
 803 {
 804         if (streq(string, "c") || streq(string, "c-header"))
 805                 return FILETYPE_C;
 806         if (streq(string, "c++") || streq(string, "c++-header"))
 807                 return FILETYPE_CXX;
 808         if (streq(string, "assembler"))
 809                 return FILETYPE_PREPROCESSED_ASSEMBLER;
 810         if (streq(string, "assembler-with-cpp"))
 811                 return FILETYPE_ASSEMBLER;
 812         if (streq(string, "none"))
 813                 return FILETYPE_AUTODETECT;
 814
 815         return FILETYPE_UNKNOWN;
 816 }
 817
 818 static bool init_os_support(void)
 819 {
 820         wchar_atomic_kind         = ATOMIC_TYPE_INT;
 821         enable_main_collect2_hack = false;
 822         define_intmax_types       = false;
 823
 824         if (firm_is_unixish_os(target_machine)) {
 825                 set_create_ld_ident(create_name_linux_elf);
 826         } else if (firm_is_darwin_os(target_machine)) {
 827                 set_create_ld_ident(create_name_macho);
 828                 define_intmax_types = true;
 829         } else if (firm_is_windows_os(target_machine)) {
 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 bool is_ia32_cpu(const char *architecture)
 861 {
 862         return streq(architecture, "i386")
 863             || streq(architecture, "i486")
 864             || streq(architecture, "i586")
 865             || streq(architecture, "i686")
 866             || streq(architecture, "i786");
 867 }
 868
 869 static const char *setup_isa_from_tripel(const machine_triple_t *machine)
 870 {
 871         const char *cpu = machine->cpu_type;
 872
 873         if (is_ia32_cpu(cpu)) {
 874                 return "ia32";
 875         } else if (streq(cpu, "x86_64")) {
 876                 return "amd64";
 877         } else if (streq(cpu, "sparc")) {
 878                 return "sparc";
 879         } else if (streq(cpu, "arm")) {
 880                 return "arm";
 881         } else {
 882                 fprintf(stderr, "Unknown cpu '%s' in target-triple\n", cpu);
 883                 return NULL;
 884         }
 885 }
 886
 887 static const char *setup_target_machine(void)
 888 {
 889         if (!setup_firm_for_machine(target_machine))
 890                 exit(1);
 891
 892         const char *isa = setup_isa_from_tripel(target_machine);
 893
 894         if (isa == NULL)
 895                 exit(1);
 896
 897         init_os_support();
 898
 899         return isa;
 900 }
 901
 902 /**
 903  * initialize cparser type properties based on a firm type
 904  */
 905 static void set_typeprops_type(atomic_type_properties_t* props, ir_type *type)
 906 {
 907         props->size             = get_type_size_bytes(type);
 908         props->alignment        = get_type_alignment_bytes(type);
 909         props->struct_alignment = props->alignment;
 910 }
 911
 912 /**
 913  * Copy atomic type properties except the integer conversion rank
 914  */
 915 static void copy_typeprops(atomic_type_properties_t *dest,
 916                            const atomic_type_properties_t *src)
 917 {
 918         dest->size             = src->size;
 919         dest->alignment        = src->alignment;
 920         dest->struct_alignment = src->struct_alignment;
 921         dest->flags            = src->flags;
 922 }
 923
 924 static void init_types_and_adjust(void)
 925 {
 926         const backend_params *be_params = be_get_backend_param();
 927         unsigned machine_size = be_params->machine_size;
 928         init_types(machine_size);
 929
 930         atomic_type_properties_t *props = atomic_type_properties;
 931
 932         /* adjust types as requested by target architecture */
 933         ir_type *type_long_double = be_params->type_long_double;
 934         if (type_long_double != NULL) {
 935                 set_typeprops_type(&props[ATOMIC_TYPE_LONG_DOUBLE], type_long_double);
 936                 atomic_modes[ATOMIC_TYPE_LONG_DOUBLE] = get_type_mode(type_long_double);
 937         }
 938
 939         ir_type *type_long_long = be_params->type_long_long;
 940         if (type_long_long != NULL)
 941                 set_typeprops_type(&props[ATOMIC_TYPE_LONGLONG], type_long_long);
 942
 943         ir_type *type_unsigned_long_long = be_params->type_unsigned_long_long;
 944         if (type_unsigned_long_long != NULL)
 945                 set_typeprops_type(&props[ATOMIC_TYPE_ULONGLONG], type_unsigned_long_long);
 946
 947         /* operating system ABI specifics */
 948         if (firm_is_darwin_os(target_machine)) {
 949                 if (machine_size == 32) {
 950                         props[ATOMIC_TYPE_LONGLONG].struct_alignment    =  4;
 951                         props[ATOMIC_TYPE_ULONGLONG].struct_alignment   =  4;
 952                         props[ATOMIC_TYPE_DOUBLE].struct_alignment      =  4;
 953                         props[ATOMIC_TYPE_LONG_DOUBLE].size             = 16;
 954                         props[ATOMIC_TYPE_LONG_DOUBLE].alignment        = 16;
 955                         props[ATOMIC_TYPE_LONG_DOUBLE].struct_alignment = 16;
 956                 }
 957         } else if (firm_is_windows_os(target_machine)) {
 958                 if (machine_size == 64) {
 959                         /* to ease porting of old c-code microsoft decided to use 32bits
 960                          * even for long */
 961                         props[ATOMIC_TYPE_LONG]  = props[ATOMIC_TYPE_INT];
 962                         props[ATOMIC_TYPE_ULONG] = props[ATOMIC_TYPE_UINT];
 963                 }
 964
 965                 /* on windows long double is not supported */
 966                 props[ATOMIC_TYPE_LONG_DOUBLE] = props[ATOMIC_TYPE_DOUBLE];
 967         } else if (firm_is_unixish_os(target_machine)) {
 968                 if (is_ia32_cpu(target_machine->cpu_type)) {
 969                         /* System V has a broken alignment for double so we have to add
 970                          * a hack here */
 971                         props[ATOMIC_TYPE_DOUBLE].struct_alignment    = 4;
 972                         props[ATOMIC_TYPE_LONGLONG].struct_alignment  = 4;
 973                         props[ATOMIC_TYPE_ULONGLONG].struct_alignment = 4;
 974                 }
 975         }
 976
 977         /* stuff decided after processing operating system specifics and
 978          * commandline flags */
 979         if (char_is_signed) {
 980                 props[ATOMIC_TYPE_CHAR].flags |= ATOMIC_TYPE_FLAG_SIGNED;
 981         } else {
 982                 props[ATOMIC_TYPE_CHAR].flags &= ~ATOMIC_TYPE_FLAG_SIGNED;
 983         }
 984         /* copy over wchar_t properties (including rank) */
 985         props[ATOMIC_TYPE_WCHAR_T] = props[wchar_atomic_kind];
 986
 987         /* initialize defaults for unsupported types */
 988         if (type_long_long == NULL) {
 989                 copy_typeprops(&props[ATOMIC_TYPE_LONGLONG], &props[ATOMIC_TYPE_LONG]);
 990         }
 991         if (type_unsigned_long_long == NULL) {
 992                 copy_typeprops(&props[ATOMIC_TYPE_ULONGLONG],
 993                                &props[ATOMIC_TYPE_ULONG]);
 994         }
 995         if (type_long_double == NULL) {
 996                 copy_typeprops(&props[ATOMIC_TYPE_LONG_DOUBLE],
 997                                &props[ATOMIC_TYPE_DOUBLE]);
 998         }
 999
1000         /* initialize firm pointer modes */
1001         char               name[64];
1002         unsigned           bit_size     = machine_size;
1003         unsigned           modulo_shift = decide_modulo_shift(bit_size);
1004
1005         snprintf(name, sizeof(name), "p%u", machine_size);
1006         ir_mode *ptr_mode = new_reference_mode(name, irma_twos_complement, bit_size, modulo_shift);
1007
1008         if (machine_size == 16) {
1009                 set_reference_mode_signed_eq(ptr_mode, mode_Hs);
1010                 set_reference_mode_unsigned_eq(ptr_mode, mode_Hu);
1011         } else if (machine_size == 32) {
1012                 set_reference_mode_signed_eq(ptr_mode, mode_Is);
1013                 set_reference_mode_unsigned_eq(ptr_mode, mode_Iu);
1014         } else if (machine_size == 64) {
1015                 set_reference_mode_signed_eq(ptr_mode, mode_Ls);
1016                 set_reference_mode_unsigned_eq(ptr_mode, mode_Lu);
1017         } else {
1018                 panic("strange machine_size when determining pointer modes");
1019         }
1020
1021         /* Hmm, pointers should be machine size */
1022         set_modeP_data(ptr_mode);
1023         set_modeP_code(ptr_mode);
1024
1025         byte_order_big_endian = be_params->byte_order_big_endian;
1026         if (be_params->modulo_shift_efficient) {
1027                 architecture_modulo_shift = machine_size;
1028         } else {
1029                 architecture_modulo_shift = 0;
1030         }
1031 }
1032
1033 int main(int argc, char **argv)
1034 {
1035         const char        *dumpfunction         = NULL;
1036         const char        *print_file_name_file = NULL;
1037         compile_mode_t     mode                 = CompileAssembleLink;
1038         int                opt_level            = 1;
1039         int                result               = EXIT_SUCCESS;
1040         char               cpu_arch[16]         = "ia32";
1041         file_list_entry_t *files                = NULL;
1042         file_list_entry_t *last_file            = NULL;
1043         bool               construct_dep_target = false;
1044         bool               do_timing            = false;
1045         bool               profile_generate     = false;
1046         bool               profile_use          = false;
1047         struct obstack     file_obst;
1048
1049         atexit(free_temp_files);
1050
1051         /* hack for now... */
1052         if (strstr(argv[0], "pptest") != NULL) {
1053                 extern int pptest_main(int argc, char **argv);
1054                 return pptest_main(argc, argv);
1055         }
1056
1057         obstack_init(&cppflags_obst);
1058         obstack_init(&ldflags_obst);
1059         obstack_init(&asflags_obst);
1060         obstack_init(&file_obst);
1061
1062 #define GET_ARG_AFTER(def, args)                                             \
1063         do {                                                                     \
1064         def = &arg[sizeof(args)-1];                                              \
1065         if (def[0] == '\0') {                                                    \
1066                 ++i;                                                                 \
1067                 if (i >= argc) {                                                     \
1068                         fprintf(stderr, "error: expected argument after '" args "'\n");  \
1069                         argument_errors = true;                                          \
1070                         break;                                                           \
1071                 }                                                                    \
1072                 def = argv[i];                                                       \
1073                 if (def[0] == '-' && def[1] != '\0') {                               \
1074                         fprintf(stderr, "error: expected argument after '" args "'\n");  \
1075                         argument_errors = true;                                          \
1076                         continue;                                                        \
1077                 }                                                                    \
1078         }                                                                        \
1079         } while (0)
1080
1081 #define SINGLE_OPTION(ch) (option[0] == (ch) && option[1] == '\0')
1082
1083         /* initialize this early because it has to parse options */
1084         gen_firm_init();
1085
1086         /* early options parsing (find out optimization level and OS) */
1087         for (int i = 1; i < argc; ++i) {
1088                 const char *arg = argv[i];
1089                 if (arg[0] != '-')
1090                         continue;
1091
1092                 const char *option = &arg[1];
1093                 if (option[0] == 'O') {
1094                         sscanf(&option[1], "%d", &opt_level);
1095                 }
1096         }
1097
1098         if (target_machine == NULL) {
1099                 target_machine = firm_get_host_machine();
1100         }
1101         choose_optimization_pack(opt_level);
1102         setup_target_machine();
1103
1104         /* parse rest of options */
1105                         standard        = STANDARD_DEFAULT;
1106         unsigned        features_on     = 0;
1107         unsigned        features_off    = 0;
1108         filetype_t      forced_filetype = FILETYPE_AUTODETECT;
1109         help_sections_t help            = HELP_NONE;
1110         bool            argument_errors = false;
1111         for (int i = 1; i < argc; ++i) {
1112                 const char *arg = argv[i];
1113                 if (arg[0] == '-' && arg[1] != '\0') {
1114                         /* an option */
1115                         const char *option = &arg[1];
1116                         if (option[0] == 'o') {
1117                                 GET_ARG_AFTER(outname, "-o");
1118                         } else if (option[0] == 'g') {
1119                                 /* TODO: parse -gX with 0<=x<=3... */
1120                                 set_be_option("debug=frameinfo");
1121                                 set_be_option("ia32-nooptcc=yes");
1122                         } else if (SINGLE_OPTION('c')) {
1123                                 mode = CompileAssemble;
1124                         } else if (SINGLE_OPTION('E')) {
1125                                 mode = PreprocessOnly;
1126                         } else if (SINGLE_OPTION('s')) {
1127                                 add_flag(&ldflags_obst, "-s");
1128                         } else if (SINGLE_OPTION('S')) {
1129                                 mode = Compile;
1130                         } else if (option[0] == 'O') {
1131                                 continue;
1132                         } else if (option[0] == 'I') {
1133                                 const char *opt;
1134                                 GET_ARG_AFTER(opt, "-I");
1135                                 add_flag(&cppflags_obst, "-I%s", opt);
1136                         } else if (option[0] == 'D') {
1137                                 const char *opt;
1138                                 GET_ARG_AFTER(opt, "-D");
1139                                 add_flag(&cppflags_obst, "-D%s", opt);
1140                         } else if (option[0] == 'U') {
1141                                 const char *opt;
1142                                 GET_ARG_AFTER(opt, "-U");
1143                                 add_flag(&cppflags_obst, "-U%s", opt);
1144                         } else if (option[0] == 'l') {
1145                                 const char *opt;
1146                                 GET_ARG_AFTER(opt, "-l");
1147                                 add_flag(&ldflags_obst, "-l%s", opt);
1148                         } else if (option[0] == 'L') {
1149                                 const char *opt;
1150                                 GET_ARG_AFTER(opt, "-L");
1151                                 add_flag(&ldflags_obst, "-L%s", opt);
1152                         } else if (SINGLE_OPTION('v')) {
1153                                 verbose = 1;
1154                         } else if (SINGLE_OPTION('w')) {
1155                                 add_flag(&cppflags_obst, "-w");
1156                                 disable_all_warnings();
1157                         } else if (option[0] == 'x') {
1158                                 const char *opt;
1159                                 GET_ARG_AFTER(opt, "-x");
1160                                 forced_filetype = get_filetype_from_string(opt);
1161                                 if (forced_filetype == FILETYPE_UNKNOWN) {
1162                                         fprintf(stderr, "Unknown language '%s'\n", opt);
1163                                         argument_errors = true;
1164                                 }
1165                         } else if (streq(option, "M")) {
1166                                 mode = PreprocessOnly;
1167                                 add_flag(&cppflags_obst, "-M");
1168                         } else if (streq(option, "MMD") ||
1169                                    streq(option, "MD")) {
1170                             construct_dep_target = true;
1171                                 add_flag(&cppflags_obst, "-%s", option);
1172                         } else if (streq(option, "MM")  ||
1173                                    streq(option, "MP")) {
1174                                 add_flag(&cppflags_obst, "-%s", option);
1175                         } else if (streq(option, "MT") ||
1176                                    streq(option, "MQ") ||
1177                                    streq(option, "MF")) {
1178                                 const char *opt;
1179                                 GET_ARG_AFTER(opt, "-MT");
1180                                 add_flag(&cppflags_obst, "-%s", option);
1181                                 add_flag(&cppflags_obst, "%s", opt);
1182                         } else if (streq(option, "include")) {
1183                                 const char *opt;
1184                                 GET_ARG_AFTER(opt, "-include");
1185                                 add_flag(&cppflags_obst, "-include");
1186                                 add_flag(&cppflags_obst, "%s", opt);
1187                         } else if (streq(option, "isystem")) {
1188                                 const char *opt;
1189                                 GET_ARG_AFTER(opt, "-isystem");
1190                                 add_flag(&cppflags_obst, "-isystem");
1191                                 add_flag(&cppflags_obst, "%s", opt);
1192 #if defined(linux) || defined(__linux) || defined(__linux__) || defined(__CYGWIN__)
1193                         } else if (streq(option, "pthread")) {
1194                                 /* set flags for the preprocessor */
1195                                 add_flag(&cppflags_obst, "-D_REENTRANT");
1196                                 /* set flags for the linker */
1197                                 add_flag(&ldflags_obst, "-lpthread");
1198 #endif
1199                         } else if (streq(option, "nostdinc")
1200                                         || streq(option, "trigraphs")) {
1201                                 /* pass these through to the preprocessor */
1202                                 add_flag(&cppflags_obst, "%s", arg);
1203                         } else if (streq(option, "pipe")) {
1204                                 /* here for gcc compatibility */
1205                         } else if (streq(option, "static")) {
1206                                 add_flag(&ldflags_obst, "-static");
1207                         } else if (streq(option, "shared")) {
1208                                 add_flag(&ldflags_obst, "-shared");
1209                         } else if (option[0] == 'f') {
1210                                 char const *orig_opt;
1211                                 GET_ARG_AFTER(orig_opt, "-f");
1212
1213                                 if (strstart(orig_opt, "input-charset=")) {
1214                                         char const* const encoding = strchr(orig_opt, '=') + 1;
1215                                         input_encoding = encoding;
1216                                 } else if (strstart(orig_opt, "align-loops=") ||
1217                                            strstart(orig_opt, "align-jumps=") ||
1218                                            strstart(orig_opt, "align-functions=")) {
1219                                         fprintf(stderr, "ignoring gcc option '-f%s'\n", orig_opt);
1220                                 } else if (strstart(orig_opt, "visibility=")) {
1221                                         const char *val = strchr(orig_opt, '=')+1;
1222                                         elf_visibility_tag_t visibility
1223                                                 = get_elf_visibility_from_string(val);
1224                                         if (visibility == ELF_VISIBILITY_ERROR) {
1225                                                 fprintf(stderr, "invalid visibility '%s' specified\n",
1226                                                         val);
1227                                                 argument_errors = true;
1228                                         } else {
1229                                                 set_default_visibility(visibility);
1230                                         }
1231                                 } else if (strstart(orig_opt, "message-length=")) {
1232                                         /* ignore: would only affect error message format */
1233                                 } else if (streq(orig_opt, "fast-math") ||
1234                                            streq(orig_opt, "fp-fast")) {
1235                                         firm_fp_model = fp_model_fast;
1236                                 } else if (streq(orig_opt, "fp-precise")) {
1237                                         firm_fp_model = fp_model_precise;
1238                                 } else if (streq(orig_opt, "fp-strict")) {
1239                                         firm_fp_model = fp_model_strict;
1240                                 } else if (streq(orig_opt, "help")) {
1241                                         fprintf(stderr, "warning: -fhelp is deprecated\n");
1242                                         help |= HELP_OPTIMIZATION;
1243                                 } else {
1244                                         /* -f options which have an -fno- variant */
1245                                         char const *opt         = orig_opt;
1246                                         bool        truth_value = true;
1247                                         if (opt[0] == 'n' && opt[1] == 'o' && opt[2] == '-') {
1248                                                 truth_value = false;
1249                                                 opt += 3;
1250                                         }
1251
1252                                         if (streq(opt, "diagnostics-show-option")) {
1253                                                 diagnostics_show_option = truth_value;
1254                                         } else if (streq(opt, "dollars-in-identifiers")) {
1255                                                 allow_dollar_in_symbol = truth_value;
1256                                         } else if (streq(opt, "omit-frame-pointer")) {
1257                                                 set_be_option(truth_value ? "omitfp" : "omitfp=no");
1258                                         } else if (streq(opt, "short-wchar")) {
1259                                                 wchar_atomic_kind = truth_value ? ATOMIC_TYPE_USHORT
1260                                                         : ATOMIC_TYPE_INT;
1261                                         } else if (streq(opt, "show-column")) {
1262                                                 show_column = truth_value;
1263                                         } else if (streq(opt, "signed-char")) {
1264                                                 char_is_signed = truth_value;
1265                                         } else if (streq(opt, "strength-reduce")) {
1266                                                 /* does nothing, for gcc compatibility (even gcc does
1267                                                  * nothing for this switch anymore) */
1268                                         } else if (streq(opt, "syntax-only")) {
1269                                                 mode = truth_value ? ParseOnly : CompileAssembleLink;
1270                                         } else if (streq(opt, "unsigned-char")) {
1271                                                 char_is_signed = !truth_value;
1272                                         } else if (streq(opt, "freestanding")) {
1273                                                 freestanding = truth_value;
1274                                         } else if (streq(opt, "hosted")) {
1275                                                 freestanding = !truth_value;
1276                                         } else if (streq(opt, "profile-generate")) {
1277                                                 profile_generate = truth_value;
1278                                         } else if (streq(opt, "profile-use")) {
1279                                                 profile_use = truth_value;
1280                                         } else if (!truth_value &&
1281                                                    streq(opt, "asynchronous-unwind-tables")) {
1282                                             /* nothing todo, a gcc feature which we do not support
1283                                              * anyway was deactivated */
1284                                         } else if (streq(opt, "verbose-asm")) {
1285                                                 /* ignore: we always print verbose assembler */
1286                                         } else if (streq(opt, "jump-tables")             ||
1287                                                    streq(opt, "expensive-optimizations") ||
1288                                                    streq(opt, "common")                  ||
1289                                                    streq(opt, "optimize-sibling-calls")  ||
1290                                                    streq(opt, "align-loops")             ||
1291                                                    streq(opt, "align-jumps")             ||
1292                                                    streq(opt, "align-functions")         ||
1293                                                    streq(opt, "unroll-loops")            ||
1294                                                    streq(opt, "PIC")                     ||
1295                                                    streq(opt, "stack-protector")         ||
1296                                                    streq(opt, "stack-protector-all")) {
1297                                                 fprintf(stderr, "ignoring gcc option '-f%s'\n", orig_opt);
1298                                         } else {
1299                                                 int res = firm_option(orig_opt);
1300                                                 if (res == 0) {
1301                                                         fprintf(stderr, "error: unknown Firm option '-f%s'\n",
1302                                                                 orig_opt);
1303                                                         argument_errors = true;
1304                                                         continue;
1305                                                 }
1306                                         }
1307                                 }
1308                         } else if (option[0] == 'b') {
1309                                 const char *opt;
1310                                 GET_ARG_AFTER(opt, "-b");
1311
1312                                 if (streq(opt, "help")) {
1313                                         fprintf(stderr, "warning: -bhelp is deprecated (use --help-firm)\n");
1314                                         help |= HELP_FIRM;
1315                                 } else {
1316                                         int res = be_parse_arg(opt);
1317                                         if (res == 0) {
1318                                                 fprintf(stderr, "error: unknown Firm backend option '-b %s'\n",
1319                                                                 opt);
1320                                                 argument_errors = true;
1321                                         } else if (strstart(opt, "isa=")) {
1322                                                 strncpy(cpu_arch, opt, sizeof(cpu_arch));
1323                                         }
1324                                 }
1325                         } else if (option[0] == 'W') {
1326                                 if (strstart(option + 1, "p,")) {
1327                                         // pass options directly to the preprocessor
1328                                         const char *opt;
1329                                         GET_ARG_AFTER(opt, "-Wp,");
1330                                         add_flag(&cppflags_obst, "-Wp,%s", opt);
1331                                 } else if (strstart(option + 1, "l,")) {
1332                                         // pass options directly to the linker
1333                                         const char *opt;
1334                                         GET_ARG_AFTER(opt, "-Wl,");
1335                                         add_flag(&ldflags_obst, "-Wl,%s", opt);
1336                                 } else if (streq(option + 1, "no-trigraphs")
1337                                                         || streq(option + 1, "undef")
1338                                                         || streq(option + 1, "missing-include-dirs")
1339                                                         || streq(option + 1, "endif-labels")) {
1340                                         add_flag(&cppflags_obst, "%s", arg);
1341                                 } else if (streq(option+1, "init-self")) {
1342                                         /* ignored (same as gcc does) */
1343                                 } else if (streq(option+1, "format-y2k")
1344                                            || streq(option+1, "format-security")
1345                                            || streq(option+1, "old-style-declaration")
1346                                            || streq(option+1, "type-limits")) {
1347                                     /* ignore (gcc compatibility) */
1348                                 } else {
1349                                         set_warning_opt(&option[1]);
1350                                 }
1351                         } else if (option[0] == 'm') {
1352                                 /* -m options */
1353                                 const char *opt;
1354                                 char arch_opt[64];
1355
1356                                 GET_ARG_AFTER(opt, "-m");
1357                                 if (strstart(opt, "target=")) {
1358                                         GET_ARG_AFTER(opt, "-mtarget=");
1359                                         if (!parse_target_triple(opt)) {
1360                                                 argument_errors = true;
1361                                         } else {
1362                                                 const char *isa = setup_target_machine();
1363                                                 strncpy(cpu_arch, isa, sizeof(cpu_arch));
1364                                                 target_triple = opt;
1365                                         }
1366                                 } else if (strstart(opt, "triple=")) {
1367                                         GET_ARG_AFTER(opt, "-mtriple=");
1368                                         if (!parse_target_triple(opt)) {
1369                                                 argument_errors = true;
1370                                         } else {
1371                                                 const char *isa = setup_target_machine();
1372                                                 strncpy(cpu_arch, isa, sizeof(cpu_arch));
1373                                                 target_triple = opt;
1374                                         }
1375                                 } else if (strstart(opt, "arch=")) {
1376                                         GET_ARG_AFTER(opt, "-march=");
1377                                         snprintf(arch_opt, sizeof(arch_opt), "%s-arch=%s", cpu_arch, opt);
1378                                         int res = be_parse_arg(arch_opt);
1379                                         snprintf(arch_opt, sizeof(arch_opt), "%s-opt=%s", cpu_arch, opt);
1380                                         res &= be_parse_arg(arch_opt);
1381
1382                                         if (res == 0) {
1383                                                 fprintf(stderr, "Unknown architecture '%s'\n", arch_opt);
1384                                                 argument_errors = true;
1385                                         }
1386                                 } else if (strstart(opt, "tune=")) {
1387                                         GET_ARG_AFTER(opt, "-mtune=");
1388                                         snprintf(arch_opt, sizeof(arch_opt), "%s-opt=%s", cpu_arch, opt);
1389                                         int res = be_parse_arg(arch_opt);
1390                                         if (res == 0)
1391                                                 argument_errors = true;
1392                                 } else if (strstart(opt, "cpu=")) {
1393                                         GET_ARG_AFTER(opt, "-mcpu=");
1394                                         snprintf(arch_opt, sizeof(arch_opt), "%s-arch=%s", cpu_arch, opt);
1395                                         int res = be_parse_arg(arch_opt);
1396                                         if (res == 0)
1397                                                 argument_errors = true;
1398                                 } else if (strstart(opt, "fpmath=")) {
1399                                         GET_ARG_AFTER(opt, "-mfpmath=");
1400                                         if (streq(opt, "387"))
1401                                                 opt = "x87";
1402                                         else if (streq(opt, "sse"))
1403                                                 opt = "sse2";
1404                                         else {
1405                                                 fprintf(stderr, "error: option -mfpmath supports only 387 or sse\n");
1406                                                 argument_errors = true;
1407                                         }
1408                                         if (!argument_errors) {
1409                                                 snprintf(arch_opt, sizeof(arch_opt), "%s-fpunit=%s", cpu_arch, opt);
1410                                                 int res = be_parse_arg(arch_opt);
1411                                                 if (res == 0)
1412                                                         argument_errors = true;
1413                                         }
1414                                 } else if (strstart(opt, "preferred-stack-boundary=")) {
1415                                         GET_ARG_AFTER(opt, "-mpreferred-stack-boundary=");
1416                                         snprintf(arch_opt, sizeof(arch_opt), "%s-stackalign=%s", cpu_arch, opt);
1417                                         int res = be_parse_arg(arch_opt);
1418                                         if (res == 0)
1419                                                 argument_errors = true;
1420                                 } else if (streq(opt, "rtd")) {
1421                                         default_calling_convention = CC_STDCALL;
1422                                 } else if (strstart(opt, "regparm=")) {
1423                                         fprintf(stderr, "error: regparm convention not supported yet\n");
1424                                         argument_errors = true;
1425                                 } else if (streq(opt, "soft-float")) {
1426                                         add_flag(&ldflags_obst, "-msoft-float");
1427                                         snprintf(arch_opt, sizeof(arch_opt), "%s-fpunit=softfloat", cpu_arch);
1428                                         int res = be_parse_arg(arch_opt);
1429                                         if (res == 0)
1430                                                 argument_errors = true;
1431                                 } else if (streq(opt, "sse2")) {
1432                                         /* ignore for now, our x86 backend always uses sse when
1433                                          * sse is requested */
1434                                 } else {
1435                                         long int value = strtol(opt, NULL, 10);
1436                                         if (value == 0) {
1437                                                 fprintf(stderr, "error: wrong option '-m %s'\n",  opt);
1438                                                 argument_errors = true;
1439                                         } else if (value != 16 && value != 32 && value != 64) {
1440                                                 fprintf(stderr, "error: option -m supports only 16, 32 or 64\n");
1441                                                 argument_errors = true;
1442                                         } else {
1443                                                 unsigned machine_size = (unsigned)value;
1444                                                 /* TODO: choose/change backend based on this */
1445                                                 add_flag(&cppflags_obst, "-m%u", machine_size);
1446                                                 add_flag(&asflags_obst, "-m%u", machine_size);
1447                                                 add_flag(&ldflags_obst, "-m%u", machine_size);
1448                                         }
1449                                 }
1450                         } else if (streq(option, "pg")) {
1451                                 set_be_option("gprof");
1452                                 add_flag(&ldflags_obst, "-pg");
1453                         } else if (streq(option, "ansi")) {
1454                                 add_flag(&cppflags_obst, "-ansi");
1455                         } else if (streq(option, "pedantic")) {
1456                                 fprintf(stderr, "warning: ignoring gcc option '%s'\n", arg);
1457                         } else if (strstart(option, "std=")) {
1458                                 const char *const o = &option[4];
1459                                 standard =
1460                                         streq(o, "c++")            ? STANDARD_CXX98   :
1461                                         streq(o, "c++98")          ? STANDARD_CXX98   :
1462                                         streq(o, "c89")            ? STANDARD_C89     :
1463                                         streq(o, "c99")            ? STANDARD_C99     :
1464                                         streq(o, "c9x")            ? STANDARD_C99     : // deprecated
1465                                         streq(o, "gnu++98")        ? STANDARD_GNUXX98 :
1466                                         streq(o, "gnu89")          ? STANDARD_GNU89   :
1467                                         streq(o, "gnu99")          ? STANDARD_GNU99   :
1468                                         streq(o, "gnu9x")          ? STANDARD_GNU99   : // deprecated
1469                                         streq(o, "iso9899:1990")   ? STANDARD_C89     :
1470                                         streq(o, "iso9899:199409") ? STANDARD_C90     :
1471                                         streq(o, "iso9899:1999")   ? STANDARD_C99     :
1472                                         streq(o, "iso9899:199x")   ? STANDARD_C99     : // deprecated
1473                                         (fprintf(stderr, "warning: ignoring gcc option '%s'\n", arg), standard);
1474                         } else if (streq(option, "version")) {
1475                                 print_cparser_version();
1476                                 return EXIT_SUCCESS;
1477                         } else if (streq(option, "dumpversion")) {
1478                                 /* gcc compatibility option */
1479                                 print_cparser_version_short();
1480                                 return EXIT_SUCCESS;
1481                         } else if (strstart(option, "print-file-name=")) {
1482                                 GET_ARG_AFTER(print_file_name_file, "-print-file-name=");
1483                         } else if (option[0] == '-') {
1484                                 /* double dash option */
1485                                 ++option;
1486                                 if (streq(option, "gcc")) {
1487                                         features_on  |=  _GNUC;
1488                                         features_off &= ~_GNUC;
1489                                 } else if (streq(option, "no-gcc")) {
1490                                         features_on  &= ~_GNUC;
1491                                         features_off |=  _GNUC;
1492                                 } else if (streq(option, "ms")) {
1493                                         features_on  |=  _MS;
1494                                         features_off &= ~_MS;
1495                                 } else if (streq(option, "no-ms")) {
1496                                         features_on  &= ~_MS;
1497                                         features_off |=  _MS;
1498                                 } else if (streq(option, "strict")) {
1499                                         strict_mode = true;
1500                                 } else if (streq(option, "lextest")) {
1501                                         mode = LexTest;
1502                                 } else if (streq(option, "benchmark")) {
1503                                         mode = BenchmarkParser;
1504                                 } else if (streq(option, "print-ast")) {
1505                                         mode = PrintAst;
1506                                 } else if (streq(option, "print-implicit-cast")) {
1507                                         print_implicit_casts = true;
1508                                 } else if (streq(option, "print-parenthesis")) {
1509                                         print_parenthesis = true;
1510                                 } else if (streq(option, "print-fluffy")) {
1511                                         mode = PrintFluffy;
1512                                 } else if (streq(option, "print-jna")) {
1513                                         mode = PrintJna;
1514                                 } else if (streq(option, "jna-limit")) {
1515                                         ++i;
1516                                         if (i >= argc) {
1517                                                 fprintf(stderr, "error: "
1518                                                         "expected argument after '--jna-limit'\n");
1519                                                 argument_errors = true;
1520                                                 break;
1521                                         }
1522                                         jna_limit_output(argv[i]);
1523                                 } else if (streq(option, "jna-libname")) {
1524                                         ++i;
1525                                         if (i >= argc) {
1526                                                 fprintf(stderr, "error: "
1527                                                         "expected argument after '--jna-libname'\n");
1528                                                 argument_errors = true;
1529                                                 break;
1530                                         }
1531                                         jna_set_libname(argv[i]);
1532                                 } else if (streq(option, "time")) {
1533                                         do_timing = true;
1534                                 } else if (streq(option, "version")) {
1535                                         print_cparser_version();
1536                                         return EXIT_SUCCESS;
1537                                 } else if (streq(option, "help")) {
1538                                         help |= HELP_BASIC;
1539                                 } else if (streq(option, "help-parser")) {
1540                                         help |= HELP_PARSER;
1541                                 } else if (streq(option, "help-warnings")) {
1542                                         help |= HELP_WARNINGS;
1543                                 } else if (streq(option, "help-codegen")) {
1544                                         help |= HELP_CODEGEN;
1545                                 } else if (streq(option, "help-linker")) {
1546                                         help |= HELP_LINKER;
1547                                 } else if (streq(option, "help-optimization")) {
1548                                         help |= HELP_OPTIMIZATION;
1549                                 } else if (streq(option, "help-language-tools")) {
1550                                         help |= HELP_LANGUAGETOOLS;
1551                                 } else if (streq(option, "help-debug")) {
1552                                         help |= HELP_DEBUG;
1553                                 } else if (streq(option, "help-firm")) {
1554                                         help |= HELP_FIRM;
1555                                 } else if (streq(option, "help-all")) {
1556                                         help |= HELP_ALL;
1557                                 } else if (streq(option, "dump-function")) {
1558                                         ++i;
1559                                         if (i >= argc) {
1560                                                 fprintf(stderr, "error: "
1561                                                         "expected argument after '--dump-function'\n");
1562                                                 argument_errors = true;
1563                                                 break;
1564                                         }
1565                                         dumpfunction = argv[i];
1566                                         mode         = CompileDump;
1567                                 } else if (streq(option, "export-ir")) {
1568                                         mode = CompileExportIR;
1569                                 } else if (streq(option, "unroll-loops")) {
1570                                         /* ignore (gcc compatibility) */
1571                                 } else {
1572                                         fprintf(stderr, "error: unknown argument '%s'\n", arg);
1573                                         argument_errors = true;
1574                                 }
1575                         } else {
1576                                 fprintf(stderr, "error: unknown argument '%s'\n", arg);
1577                                 argument_errors = true;
1578                         }
1579                 } else {
1580                         filetype_t type = forced_filetype;
1581                         if (type == FILETYPE_AUTODETECT) {
1582                                 if (streq(arg, "-")) {
1583                                         /* - implicitly means C source file */
1584                                         type = FILETYPE_C;
1585                                 } else {
1586                                         const char *suffix = strrchr(arg, '.');
1587                                         /* Ensure there is at least one char before the suffix */
1588                                         if (suffix != NULL && suffix != arg) {
1589                                                 ++suffix;
1590                                                 type =
1591                                                         streq(suffix, "S")   ? FILETYPE_ASSEMBLER              :
1592                                                         streq(suffix, "a")   ? FILETYPE_OBJECT                 :
1593                                                         streq(suffix, "c")   ? FILETYPE_C                      :
1594                                                         streq(suffix, "i")   ? FILETYPE_PREPROCESSED_C         :
1595                                                         streq(suffix, "C")   ? FILETYPE_CXX                    :
1596                                                         streq(suffix, "cc")  ? FILETYPE_CXX                    :
1597                                                         streq(suffix, "cp")  ? FILETYPE_CXX                    :
1598                                                         streq(suffix, "cpp") ? FILETYPE_CXX                    :
1599                                                         streq(suffix, "CPP") ? FILETYPE_CXX                    :
1600                                                         streq(suffix, "cxx") ? FILETYPE_CXX                    :
1601                                                         streq(suffix, "c++") ? FILETYPE_CXX                    :
1602                                                         streq(suffix, "ii")  ? FILETYPE_PREPROCESSED_CXX       :
1603                                                         streq(suffix, "h")   ? FILETYPE_C                      :
1604                                                         streq(suffix, "ir")  ? FILETYPE_IR                     :
1605                                                         streq(suffix, "o")   ? FILETYPE_OBJECT                 :
1606                                                         streq(suffix, "s")   ? FILETYPE_PREPROCESSED_ASSEMBLER :
1607                                                         streq(suffix, "so")  ? FILETYPE_OBJECT                 :
1608                                                         FILETYPE_OBJECT; /* gcc behavior: unknown file extension means object file */
1609                                         }
1610                                 }
1611                         }
1612
1613                         file_list_entry_t *entry
1614                                 = obstack_alloc(&file_obst, sizeof(entry[0]));
1615                         memset(entry, 0, sizeof(entry[0]));
1616                         entry->name = arg;
1617                         entry->type = type;
1618
1619                         if (last_file != NULL) {
1620                                 last_file->next = entry;
1621                         } else {
1622                                 files = entry;
1623                         }
1624                         last_file = entry;
1625                 }
1626         }
1627
1628         if (help != HELP_NONE) {
1629                 print_help(argv[0], help);
1630                 return !argument_errors;
1631         }
1632
1633         if (print_file_name_file != NULL) {
1634                 print_file_name(print_file_name_file);
1635                 return EXIT_SUCCESS;
1636         }
1637         if (files == NULL) {
1638                 fprintf(stderr, "error: no input files specified\n");
1639                 argument_errors = true;
1640         }
1641
1642         if (argument_errors) {
1643                 usage(argv[0]);
1644                 return EXIT_FAILURE;
1645         }
1646
1647         /* apply some effects from switches */
1648         c_mode |= features_on;
1649         c_mode &= ~features_off;
1650         if (profile_generate) {
1651                 add_flag(&ldflags_obst, "-lfirmprof");
1652                 set_be_option("profilegenerate");
1653         }
1654         if (profile_use) {
1655                 set_be_option("profileuse");
1656         }
1657
1658         init_symbol_table();
1659         init_types_and_adjust();
1660         init_typehash();
1661         init_basic_types();
1662         if (wchar_atomic_kind == ATOMIC_TYPE_INT)
1663                 init_wchar_types(type_int);
1664         else if (wchar_atomic_kind == ATOMIC_TYPE_USHORT)
1665                 init_wchar_types(type_short);
1666         else
1667                 panic("unexpected wchar type");
1668         init_lexer();
1669         init_ast();
1670         init_parser();
1671         init_ast2firm();
1672         init_mangle();
1673
1674         if (do_timing)
1675                 timer_init();
1676
1677         if (construct_dep_target) {
1678                 if (outname != 0 && strlen(outname) >= 2) {
1679                         get_output_name(dep_target, sizeof(dep_target), outname, ".d");
1680                 } else {
1681                         get_output_name(dep_target, sizeof(dep_target), files->name, ".d");
1682                 }
1683         } else {
1684                 dep_target[0] = '\0';
1685         }
1686
1687         char outnamebuf[4096];
1688         if (outname == NULL) {
1689                 const char *filename = files->name;
1690
1691                 switch(mode) {
1692                 case BenchmarkParser:
1693                 case PrintAst:
1694                 case PrintFluffy:
1695                 case PrintJna:
1696                 case LexTest:
1697                 case PreprocessOnly:
1698                 case ParseOnly:
1699                         outname = "-";
1700                         break;
1701                 case Compile:
1702                         get_output_name(outnamebuf, sizeof(outnamebuf), filename, ".s");
1703                         outname = outnamebuf;
1704                         break;
1705                 case CompileAssemble:
1706                         get_output_name(outnamebuf, sizeof(outnamebuf), filename, ".o");
1707                         outname = outnamebuf;
1708                         break;
1709                 case CompileDump:
1710                         get_output_name(outnamebuf, sizeof(outnamebuf), dumpfunction,
1711                                         ".vcg");
1712                         outname = outnamebuf;
1713                         break;
1714                 case CompileExportIR:
1715                         get_output_name(outnamebuf, sizeof(outnamebuf), filename, ".ir");
1716                         outname = outnamebuf;
1717                         break;
1718                 case CompileAssembleLink:
1719 #ifdef _WIN32
1720                         outname = "a.exe";
1721 #else
1722                         outname = "a.out";
1723 #endif
1724                         break;
1725                 }
1726         }
1727
1728         assert(outname != NULL);
1729
1730         FILE *out;
1731         if (streq(outname, "-")) {
1732                 out = stdout;
1733         } else {
1734                 out = fopen(outname, "w");
1735                 if (out == NULL) {
1736                         fprintf(stderr, "Could not open '%s' for writing: %s\n", outname,
1737                                         strerror(errno));
1738                         return EXIT_FAILURE;
1739                 }
1740         }
1741
1742         file_list_entry_t *file;
1743         bool               already_constructed_firm = false;
1744         for (file = files; file != NULL; file = file->next) {
1745                 char        asm_tempfile[1024];
1746                 const char *filename = file->name;
1747                 filetype_t  filetype = file->type;
1748
1749                 if (filetype == FILETYPE_OBJECT)
1750                         continue;
1751
1752                 FILE *in = NULL;
1753                 if (mode == LexTest) {
1754                         if (in == NULL)
1755                                 in = open_file(filename);
1756                         lextest(in, filename);
1757                         fclose(in);
1758                         return EXIT_SUCCESS;
1759                 }
1760
1761                 FILE *preprocessed_in = NULL;
1762                 filetype_t next_filetype = filetype;
1763                 switch (filetype) {
1764                         case FILETYPE_C:
1765                                 next_filetype = FILETYPE_PREPROCESSED_C;
1766                                 goto preprocess;
1767                         case FILETYPE_CXX:
1768                                 next_filetype = FILETYPE_PREPROCESSED_CXX;
1769                                 goto preprocess;
1770                         case FILETYPE_ASSEMBLER:
1771                                 next_filetype = FILETYPE_PREPROCESSED_ASSEMBLER;
1772                                 goto preprocess;
1773 preprocess:
1774                                 /* no support for input on FILE* yet */
1775                                 if (in != NULL)
1776                                         panic("internal compiler error: in for preprocessor != NULL");
1777
1778                                 preprocessed_in = preprocess(filename, filetype);
1779                                 if (mode == PreprocessOnly) {
1780                                         copy_file(out, preprocessed_in);
1781                                         int pp_result = pclose(preprocessed_in);
1782                                         fclose(out);
1783                                         /* remove output file in case of error */
1784                                         if (out != stdout && pp_result != EXIT_SUCCESS) {
1785                                                 unlink(outname);
1786                                         }
1787                                         return pp_result;
1788                                 }
1789
1790                                 in = preprocessed_in;
1791                                 filetype = next_filetype;
1792                                 break;
1793
1794                         default:
1795                                 break;
1796                 }
1797
1798                 FILE *asm_out;
1799                 if (mode == Compile) {
1800                         asm_out = out;
1801                 } else {
1802                         asm_out = make_temp_file(asm_tempfile, sizeof(asm_tempfile), "ccs");
1803                 }
1804
1805                 if (in == NULL)
1806                         in = open_file(filename);
1807
1808                 /* preprocess and compile */
1809                 if (filetype == FILETYPE_PREPROCESSED_C) {
1810                         char const* invalid_mode;
1811                         switch (standard) {
1812                                 case STANDARD_ANSI:
1813                                 case STANDARD_C89:   c_mode = _C89;                break;
1814                                 /* TODO determine difference between these two */
1815                                 case STANDARD_C90:   c_mode = _C89;                break;
1816                                 case STANDARD_C99:   c_mode = _C89 | _C99;         break;
1817                                 case STANDARD_GNU89: c_mode = _C89 |        _GNUC; break;
1818
1819 default_c_warn:
1820                                         fprintf(stderr,
1821                                                         "warning: command line option \"-std=%s\" is not valid for C\n",
1822                                                         invalid_mode);
1823                                         /* FALLTHROUGH */
1824                                 case STANDARD_DEFAULT:
1825                                 case STANDARD_GNU99:   c_mode = _C89 | _C99 | _GNUC; break;
1826
1827                                 case STANDARD_CXX98:   invalid_mode = "c++98"; goto default_c_warn;
1828                                 case STANDARD_GNUXX98: invalid_mode = "gnu98"; goto default_c_warn;
1829                         }
1830                         goto do_parsing;
1831                 } else if (filetype == FILETYPE_PREPROCESSED_CXX) {
1832                         char const* invalid_mode;
1833                         switch (standard) {
1834                                 case STANDARD_C89:   invalid_mode = "c89";   goto default_cxx_warn;
1835                                 case STANDARD_C90:   invalid_mode = "c90";   goto default_cxx_warn;
1836                                 case STANDARD_C99:   invalid_mode = "c99";   goto default_cxx_warn;
1837                                 case STANDARD_GNU89: invalid_mode = "gnu89"; goto default_cxx_warn;
1838                                 case STANDARD_GNU99: invalid_mode = "gnu99"; goto default_cxx_warn;
1839
1840                                 case STANDARD_ANSI:
1841                                 case STANDARD_CXX98: c_mode = _CXX; break;
1842
1843 default_cxx_warn:
1844                                         fprintf(stderr,
1845                                                         "warning: command line option \"-std=%s\" is not valid for C++\n",
1846                                                         invalid_mode);
1847                                 case STANDARD_DEFAULT:
1848                                 case STANDARD_GNUXX98: c_mode = _CXX | _GNUC; break;
1849                         }
1850
1851 do_parsing:
1852                         c_mode |= features_on;
1853                         c_mode &= ~features_off;
1854
1855                         /* do the actual parsing */
1856                         ir_timer_t *t_parsing = ir_timer_new();
1857                         timer_register(t_parsing, "Frontend: Parsing");
1858                         timer_push(t_parsing);
1859                         init_tokens();
1860                         translation_unit_t *const unit = do_parsing(in, filename);
1861                         timer_pop(t_parsing);
1862
1863                         /* prints the AST even if errors occurred */
1864                         if (mode == PrintAst) {
1865                                 print_to_file(out);
1866                                 print_ast(unit);
1867                         }
1868
1869                         if (error_count > 0) {
1870                                 /* parsing failed because of errors */
1871                                 fprintf(stderr, "%u error(s), %u warning(s)\n", error_count,
1872                                         warning_count);
1873                                 result = EXIT_FAILURE;
1874                                 continue;
1875                         } else if (warning_count > 0) {
1876                                 fprintf(stderr, "%u warning(s)\n", warning_count);
1877                         }
1878
1879                         if (in == preprocessed_in) {
1880                                 int pp_result = pclose(preprocessed_in);
1881                                 if (pp_result != EXIT_SUCCESS) {
1882                                         /* remove output file */
1883                                         if (out != stdout)
1884                                                 unlink(outname);
1885                                         return EXIT_FAILURE;
1886                                 }
1887                         }
1888
1889                         if (mode == BenchmarkParser) {
1890                                 return result;
1891                         } else if (mode == PrintFluffy) {
1892                                 write_fluffy_decls(out, unit);
1893                                 continue;
1894                         } else if (mode == PrintJna) {
1895                                 write_jna_decls(out, unit);
1896                                 continue;
1897                         }
1898
1899                         /* build the firm graph */
1900                         ir_timer_t *t_construct = ir_timer_new();
1901                         timer_register(t_construct, "Frontend: Graph construction");
1902                         timer_push(t_construct);
1903                         if (already_constructed_firm) {
1904                                 panic("compiling multiple files/translation units not possible");
1905                         }
1906                         init_implicit_optimizations();
1907                         translation_unit_to_firm(unit);
1908                         already_constructed_firm = true;
1909                         timer_pop(t_construct);
1910
1911 graph_built:
1912                         if (mode == ParseOnly) {
1913                                 continue;
1914                         }
1915
1916                         if (mode == CompileDump) {
1917                                 /* find irg */
1918                                 ident    *id     = new_id_from_str(dumpfunction);
1919                                 ir_graph *irg    = NULL;
1920                                 int       n_irgs = get_irp_n_irgs();
1921                                 for (int i = 0; i < n_irgs; ++i) {
1922                                         ir_graph *tirg   = get_irp_irg(i);
1923                                         ident    *irg_id = get_entity_ident(get_irg_entity(tirg));
1924                                         if (irg_id == id) {
1925                                                 irg = tirg;
1926                                                 break;
1927                                         }
1928                                 }
1929
1930                                 if (irg == NULL) {
1931                                         fprintf(stderr, "No graph for function '%s' found\n",
1932                                                 dumpfunction);
1933                                         return EXIT_FAILURE;
1934                                 }
1935
1936                                 dump_ir_graph_file(out, irg);
1937                                 fclose(out);
1938                                 return EXIT_SUCCESS;
1939                         }
1940
1941                         if (mode == CompileExportIR) {
1942                                 ir_export_file(out);
1943                                 if (ferror(out) != 0) {
1944                                         fprintf(stderr, "Error while writing to output\n");
1945                                         return EXIT_FAILURE;
1946                                 }
1947                                 return EXIT_SUCCESS;
1948                         }
1949
1950                         generate_code(asm_out, filename);
1951                         if (asm_out != out) {
1952                                 fclose(asm_out);
1953                         }
1954                 } else if (filetype == FILETYPE_IR) {
1955                         fclose(in);
1956                         int res = ir_import(filename);
1957                         if (res != 0) {
1958                                 fprintf(stderr, "Firm-Program import failed\n");
1959                                 return EXIT_FAILURE;
1960                         }
1961                         goto graph_built;
1962                 } else if (filetype == FILETYPE_PREPROCESSED_ASSEMBLER) {
1963                         copy_file(asm_out, in);
1964                         if (in == preprocessed_in) {
1965                                 int pp_result = pclose(preprocessed_in);
1966                                 if (pp_result != EXIT_SUCCESS) {
1967                                         /* remove output in error case */
1968                                         if (out != stdout)
1969                                                 unlink(outname);
1970                                         return pp_result;
1971                                 }
1972                         }
1973                         if (asm_out != out) {
1974                                 fclose(asm_out);
1975                         }
1976                 }
1977
1978                 if (mode == Compile)
1979                         continue;
1980
1981                 /* if we're here then we have preprocessed assembly */
1982                 filename = asm_tempfile;
1983                 filetype = FILETYPE_PREPROCESSED_ASSEMBLER;
1984
1985                 /* assemble */
1986                 if (filetype == FILETYPE_PREPROCESSED_ASSEMBLER) {
1987                         char        temp[1024];
1988                         const char *filename_o;
1989                         if (mode == CompileAssemble) {
1990                                 fclose(out);
1991                                 filename_o = outname;
1992                         } else {
1993                                 FILE *tempf = make_temp_file(temp, sizeof(temp), "cco");
1994                                 fclose(tempf);
1995                                 filename_o = temp;
1996                         }
1997
1998                         assemble(filename_o, filename);
1999
2000                         size_t len = strlen(filename_o) + 1;
2001                         filename = obstack_copy(&file_obst, filename_o, len);
2002                         filetype = FILETYPE_OBJECT;
2003                 }
2004
2005                 /* ok we're done here, process next file */
2006                 file->name = filename;
2007                 file->type = filetype;
2008         }
2009
2010         if (result != EXIT_SUCCESS) {
2011                 if (out != stdout)
2012                         unlink(outname);
2013                 return result;
2014         }
2015
2016         /* link program file */
2017         if (mode == CompileAssembleLink) {
2018                 obstack_1grow(&ldflags_obst, '\0');
2019                 const char *flags = obstack_finish(&ldflags_obst);
2020
2021                 /* construct commandline */
2022                 const char *linker = getenv("CPARSER_LINK");
2023                 if (linker != NULL) {
2024                         obstack_printf(&file_obst, "%s ", linker);
2025                 } else {
2026                         if (target_triple != NULL)
2027                                 obstack_printf(&file_obst, "%s-", target_triple);
2028                         obstack_printf(&file_obst, "%s ", LINKER);
2029                 }
2030
2031                 for (file_list_entry_t *entry = files; entry != NULL;
2032                                 entry = entry->next) {
2033                         if (entry->type != FILETYPE_OBJECT)
2034                                 continue;
2035
2036                         add_flag(&file_obst, "%s", entry->name);
2037                 }
2038
2039                 add_flag(&file_obst, "-o");
2040                 add_flag(&file_obst, outname);
2041                 obstack_printf(&file_obst, "%s", flags);
2042                 obstack_1grow(&file_obst, '\0');
2043
2044                 char *commandline = obstack_finish(&file_obst);
2045
2046                 if (verbose) {
2047                         puts(commandline);
2048                 }
2049                 int err = system(commandline);
2050                 if (err != EXIT_SUCCESS) {
2051                         fprintf(stderr, "linker reported an error\n");
2052                         return EXIT_FAILURE;
2053                 }
2054         }
2055
2056         if (do_timing)
2057                 timer_term(stderr);
2058
2059         obstack_free(&cppflags_obst, NULL);
2060         obstack_free(&ldflags_obst, NULL);
2061         obstack_free(&asflags_obst, NULL);
2062         obstack_free(&file_obst, NULL);
2063
2064         gen_firm_finish();
2065         exit_mangle();
2066         exit_ast2firm();
2067         exit_parser();
2068         exit_ast();
2069         exit_lexer();
2070         exit_typehash();
2071         exit_types();
2072         exit_tokens();
2073         exit_symbol_table();
2074         return EXIT_SUCCESS;
2075 }