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 "preprocessor.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 | _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,    /* ISO C90 (for C) or ISO C++ 1998 (for C++) */
 125         STANDARD_C89,     /* ISO C90 (sic) */
 126         STANDARD_C89AMD1, /* 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 typedef struct file_list_entry_t file_list_entry_t;
 135
 136 typedef enum filetype_t {
 137         FILETYPE_AUTODETECT,
 138         FILETYPE_C,
 139         FILETYPE_PREPROCESSED_C,
 140         FILETYPE_CXX,
 141         FILETYPE_PREPROCESSED_CXX,
 142         FILETYPE_ASSEMBLER,
 143         FILETYPE_PREPROCESSED_ASSEMBLER,
 144         FILETYPE_OBJECT,
 145         FILETYPE_IR,
 146         FILETYPE_UNKNOWN
 147 } filetype_t;
 148
 149 struct file_list_entry_t {
 150         const char  *name; /**< filename or NULL for stdin */
 151         filetype_t   type;
 152         file_list_entry_t *next;
 153 };
 154
 155 static file_list_entry_t *temp_files;
 156
 157 static void get_output_name(char *buf, size_t buflen, const char *inputname,
 158                             const char *newext)
 159 {
 160         if (inputname == NULL)
 161                 inputname = "a";
 162
 163         char const *const last_slash = strrchr(inputname, '/');
 164         char const *const filename   =
 165                 last_slash != NULL ? last_slash + 1 : inputname;
 166         char const *const last_dot   = strrchr(filename, '.');
 167         char const *const name_end   =
 168                 last_dot != NULL ? last_dot : strchr(filename, '\0');
 169
 170         int const len = snprintf(buf, buflen, "%.*s%s",
 171                         (int)(name_end - filename), filename, newext);
 172 #ifdef _WIN32
 173         if (len < 0 || buflen <= (size_t)len)
 174 #else
 175         if (buflen <= (size_t)len)
 176 #endif
 177                 panic("filename too long");
 178 }
 179
 180 static translation_unit_t *do_parsing(FILE *const in, const char *const input_name)
 181 {
 182         start_parsing();
 183
 184         switch_input(in, input_name);
 185         parse();
 186         translation_unit_t *unit = finish_parsing();
 187         close_input();
 188
 189         return unit;
 190 }
 191
 192 static void lextest(FILE *in, const char *fname)
 193 {
 194         switch_input(in, fname);
 195         do {
 196                 next_preprocessing_token();
 197                 print_token(stdout, &pp_token);
 198                 putchar('\n');
 199         } while (pp_token.kind != T_EOF);
 200         close_input();
 201 }
 202
 203 static void add_flag(struct obstack *obst, const char *format, ...)
 204 {
 205         char buf[65536];
 206         va_list ap;
 207
 208         va_start(ap, format);
 209 #ifdef _WIN32
 210         int len =
 211 #endif
 212                 vsnprintf(buf, sizeof(buf), format, ap);
 213         va_end(ap);
 214
 215         obstack_1grow(obst, ' ');
 216 #ifdef _WIN32
 217         obstack_1grow(obst, '"');
 218         obstack_grow(obst, buf, len);
 219         obstack_1grow(obst, '"');
 220 #else
 221         /* escape stuff... */
 222         for (char *c = buf; *c != '\0'; ++c) {
 223                 switch(*c) {
 224                 case ' ':
 225                 case '"':
 226                 case '$':
 227                 case '&':
 228                 case '(':
 229                 case ')':
 230                 case ';':
 231                 case '<':
 232                 case '>':
 233                 case '\'':
 234                 case '\\':
 235                 case '\n':
 236                 case '\r':
 237                 case '\t':
 238                 case '`':
 239                 case '|':
 240                         obstack_1grow(obst, '\\');
 241                         /* FALLTHROUGH */
 242                 default:
 243                         obstack_1grow(obst, *c);
 244                         break;
 245                 }
 246         }
 247 #endif
 248 }
 249
 250 static const char *type_to_string(type_t *type)
 251 {
 252         assert(type->kind == TYPE_ATOMIC);
 253         return get_atomic_kind_name(type->atomic.akind);
 254 }
 255
 256 static char const* str_lang_standard(lang_standard_t const standard)
 257 {
 258         switch (standard) {
 259         case STANDARD_C89:     return "c89";
 260         case STANDARD_C89AMD1: return "iso9899:199409";
 261         case STANDARD_C99:     return "c99";
 262         case STANDARD_GNU89:   return "gnu89";
 263         case STANDARD_GNU99:   return "gnu99";
 264         case STANDARD_CXX98:   return "c++98";
 265         case STANDARD_GNUXX98: return "gnu++98";
 266         case STANDARD_ANSI:    break;
 267         case STANDARD_DEFAULT: break;
 268         }
 269         panic("invalid standard");
 270 }
 271
 272 static FILE *preprocess(const char *fname, filetype_t filetype,
 273                         lang_standard_t standard)
 274 {
 275         static const char *common_flags = NULL;
 276
 277         if (common_flags == NULL) {
 278                 obstack_1grow(&cppflags_obst, '\0');
 279                 const char *flags = obstack_finish(&cppflags_obst);
 280
 281                 /* setup default defines */
 282                 add_flag(&cppflags_obst, "-U__WCHAR_TYPE__");
 283                 add_flag(&cppflags_obst, "-D__WCHAR_TYPE__=%s", type_to_string(type_wchar_t));
 284                 add_flag(&cppflags_obst, "-U__SIZE_TYPE__");
 285                 add_flag(&cppflags_obst, "-D__SIZE_TYPE__=%s", type_to_string(type_size_t));
 286
 287                 add_flag(&cppflags_obst, "-U__VERSION__");
 288                 add_flag(&cppflags_obst, "-D__VERSION__=\"%s\"", cparser_REVISION);
 289
 290                 if (define_intmax_types) {
 291                         add_flag(&cppflags_obst, "-U__INTMAX_TYPE__");
 292                         add_flag(&cppflags_obst, "-D__INTMAX_TYPE__=%s", type_to_string(type_intmax_t));
 293                         add_flag(&cppflags_obst, "-U__UINTMAX_TYPE__");
 294                         add_flag(&cppflags_obst, "-D__UINTMAX_TYPE__=%s", type_to_string(type_uintmax_t));
 295                 }
 296
 297                 if (flags[0] != '\0') {
 298                         size_t len = strlen(flags);
 299                         obstack_1grow(&cppflags_obst, ' ');
 300                         obstack_grow(&cppflags_obst, flags, len);
 301                 }
 302                 obstack_1grow(&cppflags_obst, '\0');
 303                 common_flags = obstack_finish(&cppflags_obst);
 304         }
 305
 306         assert(obstack_object_size(&cppflags_obst) == 0);
 307
 308         const char *preprocessor = getenv("CPARSER_PP");
 309         if (preprocessor != NULL) {
 310                 obstack_printf(&cppflags_obst, "%s ", preprocessor);
 311         } else {
 312                 if (target_triple != NULL)
 313                         obstack_printf(&cppflags_obst, "%s-", target_triple);
 314                 obstack_printf(&cppflags_obst, PREPROCESSOR);
 315         }
 316
 317         char const *lang;
 318         switch (filetype) {
 319         case FILETYPE_C:         lang = "c";                  break;
 320         case FILETYPE_CXX:       lang = "c++";                break;
 321         case FILETYPE_ASSEMBLER: lang = "assembler-with-cpp"; break;
 322         default:                 lang = NULL;                 break;
 323         }
 324         if (lang)
 325                 add_flag(&cppflags_obst, "-x%s", lang);
 326
 327         add_flag(&cppflags_obst, "-std=%s", str_lang_standard(standard));
 328
 329         obstack_printf(&cppflags_obst, "%s", common_flags);
 330
 331         /* handle dependency generation */
 332         if (dep_target[0] != '\0') {
 333                 add_flag(&cppflags_obst, "-MF");
 334                 add_flag(&cppflags_obst, dep_target);
 335                 if (outname != NULL) {
 336                         add_flag(&cppflags_obst, "-MQ");
 337                         add_flag(&cppflags_obst, outname);
 338                 }
 339         }
 340         add_flag(&cppflags_obst, fname);
 341         obstack_1grow(&cppflags_obst, '\0');
 342
 343         char *commandline = obstack_finish(&cppflags_obst);
 344         if (verbose) {
 345                 puts(commandline);
 346         }
 347         FILE *f = popen(commandline, "r");
 348         if (f == NULL) {
 349                 fprintf(stderr, "invoking preprocessor failed\n");
 350                 exit(EXIT_FAILURE);
 351         }
 352         /* we do not really need that anymore */
 353         obstack_free(&cppflags_obst, commandline);
 354
 355         return f;
 356 }
 357
 358 static void assemble(const char *out, const char *in)
 359 {
 360         obstack_1grow(&asflags_obst, '\0');
 361         const char *flags = obstack_finish(&asflags_obst);
 362
 363         const char *assembler = getenv("CPARSER_AS");
 364         if (assembler != NULL) {
 365                 obstack_printf(&asflags_obst, "%s", assembler);
 366         } else {
 367                 if (target_triple != NULL)
 368                         obstack_printf(&asflags_obst, "%s-", target_triple);
 369                 obstack_printf(&asflags_obst, "%s", ASSEMBLER);
 370         }
 371         if (flags[0] != '\0')
 372                 obstack_printf(&asflags_obst, " %s", flags);
 373
 374         obstack_printf(&asflags_obst, " %s -o %s", in, out);
 375         obstack_1grow(&asflags_obst, '\0');
 376
 377         char *commandline = obstack_finish(&asflags_obst);
 378         if (verbose) {
 379                 puts(commandline);
 380         }
 381         int err = system(commandline);
 382         if (err != EXIT_SUCCESS) {
 383                 fprintf(stderr, "assembler reported an error\n");
 384                 exit(EXIT_FAILURE);
 385         }
 386         obstack_free(&asflags_obst, commandline);
 387 }
 388
 389 static void print_file_name(const char *file)
 390 {
 391         add_flag(&ldflags_obst, "-print-file-name=%s", file);
 392
 393         obstack_1grow(&ldflags_obst, '\0');
 394         const char *flags = obstack_finish(&ldflags_obst);
 395
 396         /* construct commandline */
 397         const char *linker = getenv("CPARSER_LINK");
 398         if (linker != NULL) {
 399                 obstack_printf(&ldflags_obst, "%s ", linker);
 400         } else {
 401                 if (target_triple != NULL)
 402                         obstack_printf(&ldflags_obst, "%s-", target_triple);
 403                 obstack_printf(&ldflags_obst, "%s ", LINKER);
 404         }
 405         obstack_printf(&ldflags_obst, "%s ", linker);
 406         obstack_printf(&ldflags_obst, "%s", flags);
 407         obstack_1grow(&ldflags_obst, '\0');
 408
 409         char *commandline = obstack_finish(&ldflags_obst);
 410         if (verbose) {
 411                 puts(commandline);
 412         }
 413         int err = system(commandline);
 414         if (err != EXIT_SUCCESS) {
 415                 fprintf(stderr, "linker reported an error\n");
 416                 exit(EXIT_FAILURE);
 417         }
 418         obstack_free(&ldflags_obst, commandline);
 419 }
 420
 421 static const char *try_dir(const char *dir)
 422 {
 423         if (dir == NULL)
 424                 return dir;
 425         if (access(dir, R_OK | W_OK | X_OK) == 0)
 426                 return dir;
 427         return NULL;
 428 }
 429
 430 static const char *get_tempdir(void)
 431 {
 432         static const char *tmpdir = NULL;
 433
 434         if (tmpdir != NULL)
 435                 return tmpdir;
 436
 437         if (tmpdir == NULL)
 438                 tmpdir = try_dir(getenv("TMPDIR"));
 439         if (tmpdir == NULL)
 440                 tmpdir = try_dir(getenv("TMP"));
 441         if (tmpdir == NULL)
 442                 tmpdir = try_dir(getenv("TEMP"));
 443
 444 #ifdef P_tmpdir
 445         if (tmpdir == NULL)
 446                 tmpdir = try_dir(P_tmpdir);
 447 #endif
 448
 449         if (tmpdir == NULL)
 450                 tmpdir = try_dir("/var/tmp");
 451         if (tmpdir == NULL)
 452                 tmpdir = try_dir("/usr/tmp");
 453         if (tmpdir == NULL)
 454                 tmpdir = try_dir("/tmp");
 455
 456         if (tmpdir == NULL)
 457                 tmpdir = ".";
 458
 459         return tmpdir;
 460 }
 461
 462 #ifndef HAVE_MKSTEMP
 463 /* cheap and nasty mkstemp replacement */
 464 static int mkstemp(char *templ)
 465 {
 466         mktemp(templ);
 467         return open(templ, O_RDWR|O_CREAT|O_EXCL|O_BINARY, 0600);
 468 }
 469 #endif
 470
 471 /**
 472  * an own version of tmpnam, which: writes in a buffer, emits no warnings
 473  * during linking (like glibc/gnu ld do for tmpnam)...
 474  */
 475 static FILE *make_temp_file(char *buffer, size_t buflen, const char *prefix)
 476 {
 477         const char *tempdir = get_tempdir();
 478
 479         snprintf(buffer, buflen, "%s/%sXXXXXX", tempdir, prefix);
 480
 481         int fd = mkstemp(buffer);
 482         if (fd == -1) {
 483                 fprintf(stderr, "could not create temporary file: %s\n",
 484                         strerror(errno));
 485                 exit(EXIT_FAILURE);
 486         }
 487         FILE *out = fdopen(fd, "w");
 488         if (out == NULL) {
 489                 fprintf(stderr, "could not create temporary file FILE*\n");
 490                 exit(EXIT_FAILURE);
 491         }
 492
 493         file_list_entry_t *entry = xmalloc(sizeof(*entry));
 494         memset(entry, 0, sizeof(*entry));
 495
 496         size_t  name_len = strlen(buffer) + 1;
 497         char   *name     = malloc(name_len);
 498         memcpy(name, buffer, name_len);
 499         entry->name      = name;
 500
 501         entry->next = temp_files;
 502         temp_files  = entry;
 503
 504         return out;
 505 }
 506
 507 static void free_temp_files(void)
 508 {
 509         file_list_entry_t *entry = temp_files;
 510         file_list_entry_t *next;
 511         for ( ; entry != NULL; entry = next) {
 512                 next = entry->next;
 513
 514                 unlink(entry->name);
 515                 free((char*) entry->name);
 516                 free(entry);
 517         }
 518         temp_files = NULL;
 519 }
 520
 521 typedef enum compile_mode_t {
 522         BenchmarkParser,
 523         PreprocessOnly,
 524         ParseOnly,
 525         Compile,
 526         CompileDump,
 527         CompileExportIR,
 528         CompileAssemble,
 529         CompileAssembleLink,
 530         LexTest,
 531         PrintAst,
 532         PrintFluffy,
 533         PrintJna
 534 } compile_mode_t;
 535
 536 static void usage(const char *argv0)
 537 {
 538         fprintf(stderr, "Usage %s [options] input [-o output]\n", argv0);
 539 }
 540
 541 static void print_cparser_version(void)
 542 {
 543         printf("cparser (%s) using libFirm (%u.%u",
 544                cparser_REVISION, ir_get_version_major(),
 545                ir_get_version_minor());
 546
 547         const char *revision = ir_get_version_revision();
 548         if (revision[0] != 0) {
 549                 putchar('-');
 550                 fputs(revision, stdout);
 551         }
 552
 553         const char *build = ir_get_version_build();
 554         if (build[0] != 0) {
 555                 putchar(' ');
 556                 fputs(build, stdout);
 557         }
 558         puts(")");
 559         puts("This is free software; see the source for copying conditions.  There is NO\n"
 560              "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n");
 561 }
 562
 563 static void print_cparser_version_short(void)
 564 {
 565         puts(cparser_REVISION);
 566 }
 567
 568 static void print_help_basic(const char *argv0)
 569 {
 570         usage(argv0);
 571         puts("");
 572         put_help("--help",                   "Display this information");
 573         put_help("--version",                "Display compiler version");
 574         put_help("--help-parser",            "Display information about parser options");
 575         put_help("--help-warnings",          "Display information about warning options");
 576         put_help("--help-codegen",           "Display information about code-generation options");
 577         put_help("--help-optimization",      "Display information about optimization options");
 578         put_help("--help-linker",            "Display information about linker options");
 579         put_help("--help-language-tools",    "Display information about language tools options");
 580         put_help("--help-debug",             "Display information about compiler debugging options");
 581         put_help("--help-firm",              "Display information about direct firm options");
 582         put_help("--help-all",               "Display information about all options");
 583         put_help("-c",                       "Compile and assemble but do not link");
 584         put_help("-E",                       "Preprocess only");
 585         put_help("-S",                       "Compile but do not assembler or link");
 586         put_help("-o",                       "Specify output file");
 587         put_help("-v",                       "Verbose output (show invocation of sub-processes)");
 588         put_help("-x",                       "Force input language:");
 589         put_choice("c",                      "C");
 590         put_choice("c++",                    "C++");
 591         put_choice("assembler",              "Assembler (no preprocessing)");
 592         put_choice("assembler-with-cpp",     "Assembler with preprocessing");
 593         put_choice("none",                   "Autodetection");
 594         put_help("-pipe",                    "Ignored (gcc compatibility)");
 595 }
 596
 597 static void print_help_preprocessor(void)
 598 {
 599         put_help("-nostdinc",                "Do not search standard system include directories");
 600         put_help("-trigraphs",               "Support ISO C trigraphs");
 601         put_help("-isystem",                 "");
 602         put_help("-include",                 "");
 603         put_help("-I PATH",                  "");
 604         put_help("-D SYMBOL[=value]",        "");
 605         put_help("-U SYMBOL",                "");
 606         put_help("-Wp,OPTION",               "Pass option directly to preprocessor");
 607         put_help("-M",                       "");
 608         put_help("-MD",                      "");
 609         put_help("-MMD",                     "");
 610         put_help("-MM",                      "");
 611         put_help("-MP",                      "");
 612         put_help("-MT",                      "");
 613         put_help("-MQ",                      "");
 614         put_help("-MF",                      "");
 615 }
 616
 617 static void print_help_parser(void)
 618 {
 619         put_help("-finput-charset=CHARSET",  "Select encoding of input files");
 620         put_help("-fmessage-length=LEN",     "Ignored (gcc compatibility)");
 621         put_help("-fshort-wchar",            "Type \"wchar_t\" is unsigned short instead of int");
 622         put_help("-fshow-column",            "Show the column number in diagnostic messages");
 623         put_help("-fsigned-char",            "Type \"char\" is a signed type");
 624         put_help("-funsigned-char",          "Type \"char\" is an unsigned type");
 625         put_help("--ms",                     "Enable msvc extensions");
 626         put_help("--no-ms",                  "Disable msvc extensions");
 627         put_help("--gcc",                    "Enable gcc extensions");
 628         put_help("--no-gcc",                 "Disable gcc extensions");
 629         put_help("-std=STANDARD",            "Specify language standard:");
 630         put_choice("c99",                    "ISO C99 standard");
 631         put_choice("c89",                    "ISO C89 standard");
 632         put_choice("c90",                    "Same as -std=c89");
 633         put_choice("c9x",                    "Deprecated");
 634         put_choice("c++",                    "ISO C++ 98");
 635         put_choice("c++98",                  "ISO C++ 98");
 636         put_choice("gnu99",                  "ISO C99 + GNU extensions (default)");
 637         put_choice("gnu89",                  "ISO C89 + GNU extensions");
 638         put_choice("gnu9x",                  "Deprecated");
 639         put_choice("iso9899:1990",           "ISO C89");
 640         put_choice("iso9899:199409",         "ISO C90");
 641         put_choice("iso9899:1999",           "ISO C99");
 642         put_choice("iso9899:199x",           "Deprecated");
 643         put_help("-pedantic",                "Ignored (gcc compatibility)");
 644         put_help("-ansi",                    "-std=c90 (for C) or -std=c++98 (for C++)");
 645         put_help("--strict",                 "Enable strict conformance checking");
 646 }
 647
 648 static void print_help_warnings(void)
 649 {
 650         put_help("-f[no-]diagnostics-show-option", "Show the switch, which controls a warning, after each warning");
 651         put_help("-w",                             "Disable all warnings");
 652         put_help("-Wno-trigraphs",                 "Warn if input contains trigraphs");
 653         put_help("-Wundef",                        "Warn if an undefined macro is used in an #if");
 654         put_help("-Wmissing-include-dirs",         "Warn about missing user-specified include directories");
 655         put_help("-Wendif-labels",                 "Warn about stray text after #elif and #endif");
 656         put_help("-Winit-self",                    "Ignored (gcc compatibility)");
 657         put_help("-Wformat-y2k",                   "Ignored (gcc compatibility)");
 658         put_help("-Wformat-security",              "Ignored (gcc compatibility)");
 659         put_help("-Wold-style-declaration",        "Ignored (gcc compatibility)");
 660         put_help("-Wtype-limits",                  "Ignored (gcc compatibility)");
 661         print_warning_opt_help();
 662 }
 663
 664 static void print_help_optimization(void)
 665 {
 666         put_help("-O LEVEL",                 "Select optimization level (0-4)");
 667         firm_option_help(put_help);
 668         put_help("-fexpensive-optimizations","Ignored (gcc compatibility)");
 669 }
 670
 671 static void print_help_codegeneration(void)
 672 {
 673         put_help("-g",                       "Generate debug information");
 674         put_help("-pg",                      "Instrument code for gnu gprof");
 675         put_help("-fomit-frame-pointer",     "Produce code without frame pointer where possible");
 676         put_help("-ffreestanding",           "Compile in freestanding mode (see ISO C standard)");
 677         put_help("-fhosted",                 "Compile in hosted (not freestanding) mode");
 678         put_help("-fprofile-generate",       "Generate instrumented code to collect profile information");
 679         put_help("-fprofile-use",            "Use profile information generated by instrumented binaries");
 680         put_help("-ffp-precise",             "Precise floating point model");
 681         put_help("-ffp-fast",                "Imprecise floating point model");
 682         put_help("-ffp-strict",              "Strict floating point model");
 683         put_help("-pthread",                 "Use pthread threading library");
 684         put_help("-mtarget=TARGET",          "Specify target architecture as CPU-manufacturer-OS triple");
 685         put_help("-mtriple=TARGET",          "Alias for -mtarget (clang compatibility)");
 686         put_help("-march=ARCH",              "");
 687         put_help("-mtune=ARCH",              "");
 688         put_help("-mcpu=CPU",                "");
 689         put_help("-mfpmath=",                "");
 690         put_help("-mpreferred-stack-boundary=", "");
 691         put_help("-mrtd",                    "");
 692         put_help("-mregparm=",               "Not supported yet");
 693         put_help("-msoft-float",             "Not supported yet");
 694         put_help("-m32",                     "Generate 32bit code");
 695         put_help("-m64",                     "Generate 64bit code");
 696         put_help("-fverbose-asm",            "Ignored (gcc compatibility)");
 697         put_help("-fjump-tables",            "Ignored (gcc compatibility)");
 698         put_help("-fcommon",                 "Ignored (gcc compatibility)");
 699         put_help("-foptimize-sibling-calls", "Ignored (gcc compatibility)");
 700         put_help("-falign-loops",            "Ignored (gcc compatibility)");
 701         put_help("-falign-jumps",            "Ignored (gcc compatibility)");
 702         put_help("-falign-functions",        "Ignored (gcc compatibility)");
 703         put_help("-fPIC",                    "Ignored (gcc compatibility)");
 704         put_help("-ffast-math",              "Same as -ffp-fast (gcc compatibility)");
 705         puts("");
 706         puts("\tMost of these options can be used with a no- prefix to disable them");
 707         puts("\te.g. -fno-omit-frame-pointer");
 708 }
 709
 710 static void print_help_linker(void)
 711 {
 712         put_help("-l LIBRARY",               "");
 713         put_help("-L PATH",                  "");
 714         put_help("-s",                       "Do not produce symbol table and relocation information");
 715         put_help("-shared",                  "Produce a shared library");
 716         put_help("-static",                  "Produce statically linked binary");
 717         put_help("-Wl,OPTION",               "Pass option directly to linker");
 718 }
 719
 720 static void print_help_debug(void)
 721 {
 722         put_help("--lextest",                "Preprocess and tokenize only");
 723         put_help("--print-ast",              "Preprocess, parse and print AST");
 724         put_help("--print-implicit-cast",    "");
 725         put_help("--print-parenthesis",      "");
 726         put_help("--benchmark",              "Preprocess and parse, produces no output");
 727         put_help("--time",                   "Measure time of compiler passes");
 728         put_help("--dump-function func",     "Preprocess, parse and output vcg graph of func");
 729         put_help("--export-ir",              "Preprocess, parse and output compiler intermediate representation");
 730 }
 731
 732 static void print_help_language_tools(void)
 733 {
 734         put_help("--print-fluffy",           "Preprocess, parse and generate declarations for the fluffy language");
 735         put_help("--print-jna",              "Preprocess, parse and generate declarations for JNA");
 736         put_help("--jna-limit filename",     "");
 737         put_help("--jna-libname name",       "");
 738 }
 739
 740 static void print_help_firm(void)
 741 {
 742         put_help("-bOPTION",                 "Directly pass option to libFirm backend");
 743         int res = be_parse_arg("help");
 744         (void) res;
 745         assert(res);
 746 }
 747
 748 typedef enum {
 749         HELP_NONE          = 0,
 750         HELP_BASIC         = 1 << 0,
 751         HELP_PREPROCESSOR  = 1 << 1,
 752         HELP_PARSER        = 1 << 2,
 753         HELP_WARNINGS      = 1 << 3,
 754         HELP_OPTIMIZATION  = 1 << 4,
 755         HELP_CODEGEN       = 1 << 5,
 756         HELP_LINKER        = 1 << 6,
 757         HELP_LANGUAGETOOLS = 1 << 7,
 758         HELP_DEBUG         = 1 << 8,
 759         HELP_FIRM          = 1 << 9,
 760
 761         HELP_ALL           = -1
 762 } help_sections_t;
 763
 764 static void print_help(const char *argv0, help_sections_t sections)
 765 {
 766         if (sections & HELP_BASIC)         print_help_basic(argv0);
 767         if (sections & HELP_PREPROCESSOR)  print_help_preprocessor();
 768         if (sections & HELP_PARSER)        print_help_parser();
 769         if (sections & HELP_WARNINGS)      print_help_warnings();
 770         if (sections & HELP_OPTIMIZATION)  print_help_optimization();
 771         if (sections & HELP_CODEGEN)       print_help_codegeneration();
 772         if (sections & HELP_LINKER)        print_help_linker();
 773         if (sections & HELP_LANGUAGETOOLS) print_help_language_tools();
 774         if (sections & HELP_DEBUG)         print_help_debug();
 775         if (sections & HELP_FIRM)          print_help_firm();
 776 }
 777
 778 static void set_be_option(const char *arg)
 779 {
 780         int res = be_parse_arg(arg);
 781         (void) res;
 782         assert(res);
 783 }
 784
 785 static void copy_file(FILE *dest, FILE *input)
 786 {
 787         char buf[16384];
 788
 789         while (!feof(input) && !ferror(dest)) {
 790                 size_t read = fread(buf, 1, sizeof(buf), input);
 791                 if (fwrite(buf, 1, read, dest) != read) {
 792                         perror("could not write output");
 793                 }
 794         }
 795 }
 796
 797 static FILE *open_file(const char *filename)
 798 {
 799         if (streq(filename, "-")) {
 800                 return stdin;
 801         }
 802
 803         FILE *in = fopen(filename, "r");
 804         if (in == NULL) {
 805                 fprintf(stderr, "Could not open '%s': %s\n", filename,
 806                                 strerror(errno));
 807                 exit(EXIT_FAILURE);
 808         }
 809
 810         return in;
 811 }
 812
 813 static filetype_t get_filetype_from_string(const char *string)
 814 {
 815         if (streq(string, "c") || streq(string, "c-header"))
 816                 return FILETYPE_C;
 817         if (streq(string, "c++") || streq(string, "c++-header"))
 818                 return FILETYPE_CXX;
 819         if (streq(string, "assembler"))
 820                 return FILETYPE_PREPROCESSED_ASSEMBLER;
 821         if (streq(string, "assembler-with-cpp"))
 822                 return FILETYPE_ASSEMBLER;
 823         if (streq(string, "none"))
 824                 return FILETYPE_AUTODETECT;
 825
 826         return FILETYPE_UNKNOWN;
 827 }
 828
 829 static bool init_os_support(void)
 830 {
 831         wchar_atomic_kind         = ATOMIC_TYPE_INT;
 832         enable_main_collect2_hack = false;
 833         define_intmax_types       = false;
 834
 835         if (firm_is_unixish_os(target_machine)) {
 836                 set_create_ld_ident(create_name_linux_elf);
 837         } else if (firm_is_darwin_os(target_machine)) {
 838                 set_create_ld_ident(create_name_macho);
 839                 define_intmax_types = true;
 840         } else if (firm_is_windows_os(target_machine)) {
 841                 wchar_atomic_kind         = ATOMIC_TYPE_USHORT;
 842                 enable_main_collect2_hack = true;
 843                 set_create_ld_ident(create_name_win32);
 844         } else {
 845                 return false;
 846         }
 847
 848         return true;
 849 }
 850
 851 static bool parse_target_triple(const char *arg)
 852 {
 853         machine_triple_t *triple = firm_parse_machine_triple(arg);
 854         if (triple == NULL) {
 855                 fprintf(stderr, "Target-triple is not in the form 'cpu_type-manufacturer-operating_system'\n");
 856                 return false;
 857         }
 858         target_machine = triple;
 859         return true;
 860 }
 861
 862 static unsigned decide_modulo_shift(unsigned type_size)
 863 {
 864         if (architecture_modulo_shift == 0)
 865                 return 0;
 866         if (type_size < architecture_modulo_shift)
 867                 return architecture_modulo_shift;
 868         return type_size;
 869 }
 870
 871 static bool is_ia32_cpu(const char *architecture)
 872 {
 873         return streq(architecture, "i386")
 874             || streq(architecture, "i486")
 875             || streq(architecture, "i586")
 876             || streq(architecture, "i686")
 877             || streq(architecture, "i786");
 878 }
 879
 880 static const char *setup_isa_from_tripel(const machine_triple_t *machine)
 881 {
 882         const char *cpu = machine->cpu_type;
 883
 884         if (is_ia32_cpu(cpu)) {
 885                 return "ia32";
 886         } else if (streq(cpu, "x86_64")) {
 887                 return "amd64";
 888         } else if (streq(cpu, "sparc")) {
 889                 return "sparc";
 890         } else if (streq(cpu, "arm")) {
 891                 return "arm";
 892         } else {
 893                 fprintf(stderr, "Unknown cpu '%s' in target-triple\n", cpu);
 894                 return NULL;
 895         }
 896 }
 897
 898 static const char *setup_target_machine(void)
 899 {
 900         if (!setup_firm_for_machine(target_machine))
 901                 exit(1);
 902
 903         const char *isa = setup_isa_from_tripel(target_machine);
 904
 905         if (isa == NULL)
 906                 exit(1);
 907
 908         init_os_support();
 909
 910         return isa;
 911 }
 912
 913 /**
 914  * initialize cparser type properties based on a firm type
 915  */
 916 static void set_typeprops_type(atomic_type_properties_t* props, ir_type *type)
 917 {
 918         props->size             = get_type_size_bytes(type);
 919         props->alignment        = get_type_alignment_bytes(type);
 920         props->struct_alignment = props->alignment;
 921 }
 922
 923 /**
 924  * Copy atomic type properties except the integer conversion rank
 925  */
 926 static void copy_typeprops(atomic_type_properties_t *dest,
 927                            const atomic_type_properties_t *src)
 928 {
 929         dest->size             = src->size;
 930         dest->alignment        = src->alignment;
 931         dest->struct_alignment = src->struct_alignment;
 932         dest->flags            = src->flags;
 933 }
 934
 935 static void init_types_and_adjust(void)
 936 {
 937         const backend_params *be_params = be_get_backend_param();
 938         unsigned machine_size = be_params->machine_size;
 939         init_types(machine_size);
 940
 941         atomic_type_properties_t *props = atomic_type_properties;
 942
 943         /* adjust types as requested by target architecture */
 944         ir_type *type_long_double = be_params->type_long_double;
 945         if (type_long_double != NULL) {
 946                 set_typeprops_type(&props[ATOMIC_TYPE_LONG_DOUBLE], type_long_double);
 947                 atomic_modes[ATOMIC_TYPE_LONG_DOUBLE] = get_type_mode(type_long_double);
 948         }
 949
 950         ir_type *type_long_long = be_params->type_long_long;
 951         if (type_long_long != NULL)
 952                 set_typeprops_type(&props[ATOMIC_TYPE_LONGLONG], type_long_long);
 953
 954         ir_type *type_unsigned_long_long = be_params->type_unsigned_long_long;
 955         if (type_unsigned_long_long != NULL)
 956                 set_typeprops_type(&props[ATOMIC_TYPE_ULONGLONG], type_unsigned_long_long);
 957
 958         /* operating system ABI specifics */
 959         if (firm_is_darwin_os(target_machine)) {
 960                 if (machine_size == 32) {
 961                         props[ATOMIC_TYPE_LONGLONG].struct_alignment    =  4;
 962                         props[ATOMIC_TYPE_ULONGLONG].struct_alignment   =  4;
 963                         props[ATOMIC_TYPE_DOUBLE].struct_alignment      =  4;
 964                         props[ATOMIC_TYPE_LONG_DOUBLE].size             = 16;
 965                         props[ATOMIC_TYPE_LONG_DOUBLE].alignment        = 16;
 966                         props[ATOMIC_TYPE_LONG_DOUBLE].struct_alignment = 16;
 967                 }
 968         } else if (firm_is_windows_os(target_machine)) {
 969                 if (machine_size == 64) {
 970                         /* to ease porting of old c-code microsoft decided to use 32bits
 971                          * even for long */
 972                         props[ATOMIC_TYPE_LONG]  = props[ATOMIC_TYPE_INT];
 973                         props[ATOMIC_TYPE_ULONG] = props[ATOMIC_TYPE_UINT];
 974                 }
 975
 976                 /* on windows long double is not supported */
 977                 props[ATOMIC_TYPE_LONG_DOUBLE] = props[ATOMIC_TYPE_DOUBLE];
 978         } else if (firm_is_unixish_os(target_machine)) {
 979                 if (is_ia32_cpu(target_machine->cpu_type)) {
 980                         /* System V has a broken alignment for double so we have to add
 981                          * a hack here */
 982                         props[ATOMIC_TYPE_DOUBLE].struct_alignment    = 4;
 983                         props[ATOMIC_TYPE_LONGLONG].struct_alignment  = 4;
 984                         props[ATOMIC_TYPE_ULONGLONG].struct_alignment = 4;
 985                 }
 986         }
 987
 988         /* stuff decided after processing operating system specifics and
 989          * commandline flags */
 990         if (char_is_signed) {
 991                 props[ATOMIC_TYPE_CHAR].flags |= ATOMIC_TYPE_FLAG_SIGNED;
 992         } else {
 993                 props[ATOMIC_TYPE_CHAR].flags &= ~ATOMIC_TYPE_FLAG_SIGNED;
 994         }
 995         /* copy over wchar_t properties (including rank) */
 996         props[ATOMIC_TYPE_WCHAR_T] = props[wchar_atomic_kind];
 997
 998         /* initialize defaults for unsupported types */
 999         if (type_long_long == NULL) {
1000                 copy_typeprops(&props[ATOMIC_TYPE_LONGLONG], &props[ATOMIC_TYPE_LONG]);
1001         }
1002         if (type_unsigned_long_long == NULL) {
1003                 copy_typeprops(&props[ATOMIC_TYPE_ULONGLONG],
1004                                &props[ATOMIC_TYPE_ULONG]);
1005         }
1006         if (type_long_double == NULL) {
1007                 copy_typeprops(&props[ATOMIC_TYPE_LONG_DOUBLE],
1008                                &props[ATOMIC_TYPE_DOUBLE]);
1009         }
1010
1011         /* initialize firm pointer modes */
1012         char               name[64];
1013         unsigned           bit_size     = machine_size;
1014         unsigned           modulo_shift = decide_modulo_shift(bit_size);
1015
1016         snprintf(name, sizeof(name), "p%u", machine_size);
1017         ir_mode *ptr_mode = new_reference_mode(name, irma_twos_complement, bit_size, modulo_shift);
1018
1019         if (machine_size == 16) {
1020                 set_reference_mode_signed_eq(ptr_mode, mode_Hs);
1021                 set_reference_mode_unsigned_eq(ptr_mode, mode_Hu);
1022         } else if (machine_size == 32) {
1023                 set_reference_mode_signed_eq(ptr_mode, mode_Is);
1024                 set_reference_mode_unsigned_eq(ptr_mode, mode_Iu);
1025         } else if (machine_size == 64) {
1026                 set_reference_mode_signed_eq(ptr_mode, mode_Ls);
1027                 set_reference_mode_unsigned_eq(ptr_mode, mode_Lu);
1028         } else {
1029                 panic("strange machine_size when determining pointer modes");
1030         }
1031
1032         /* Hmm, pointers should be machine size */
1033         set_modeP_data(ptr_mode);
1034         set_modeP_code(ptr_mode);
1035
1036         byte_order_big_endian = be_params->byte_order_big_endian;
1037         if (be_params->modulo_shift_efficient) {
1038                 architecture_modulo_shift = machine_size;
1039         } else {
1040                 architecture_modulo_shift = 0;
1041         }
1042 }
1043
1044 int main(int argc, char **argv)
1045 {
1046         const char        *dumpfunction         = NULL;
1047         const char        *print_file_name_file = NULL;
1048         compile_mode_t     mode                 = CompileAssembleLink;
1049         int                opt_level            = 1;
1050         int                result               = EXIT_SUCCESS;
1051         char               cpu_arch[16]         = "ia32";
1052         file_list_entry_t *files                = NULL;
1053         file_list_entry_t *last_file            = NULL;
1054         bool               construct_dep_target = false;
1055         bool               do_timing            = false;
1056         bool               profile_generate     = false;
1057         bool               profile_use          = false;
1058         struct obstack     file_obst;
1059
1060         atexit(free_temp_files);
1061
1062         /* hack for now... */
1063         if (strstr(argv[0], "pptest") != NULL) {
1064                 extern int pptest_main(int argc, char **argv);
1065                 return pptest_main(argc, argv);
1066         }
1067
1068         obstack_init(&cppflags_obst);
1069         obstack_init(&ldflags_obst);
1070         obstack_init(&asflags_obst);
1071         obstack_init(&file_obst);
1072
1073 #define GET_ARG_AFTER(def, args)                                             \
1074         do {                                                                     \
1075         def = &arg[sizeof(args)-1];                                              \
1076         if (def[0] == '\0') {                                                    \
1077                 ++i;                                                                 \
1078                 if (i >= argc) {                                                     \
1079                         fprintf(stderr, "error: expected argument after '" args "'\n");  \
1080                         argument_errors = true;                                          \
1081                         break;                                                           \
1082                 }                                                                    \
1083                 def = argv[i];                                                       \
1084                 if (def[0] == '-' && def[1] != '\0') {                               \
1085                         fprintf(stderr, "error: expected argument after '" args "'\n");  \
1086                         argument_errors = true;                                          \
1087                         continue;                                                        \
1088                 }                                                                    \
1089         }                                                                        \
1090         } while (0)
1091
1092 #define SINGLE_OPTION(ch) (option[0] == (ch) && option[1] == '\0')
1093
1094         /* initialize this early because it has to parse options */
1095         gen_firm_init();
1096
1097         /* early options parsing (find out optimization level and OS) */
1098         for (int i = 1; i < argc; ++i) {
1099                 const char *arg = argv[i];
1100                 if (arg[0] != '-')
1101                         continue;
1102
1103                 const char *option = &arg[1];
1104                 if (option[0] == 'O') {
1105                         sscanf(&option[1], "%d", &opt_level);
1106                 }
1107         }
1108
1109         if (target_machine == NULL) {
1110                 target_machine = firm_get_host_machine();
1111         }
1112         choose_optimization_pack(opt_level);
1113         setup_target_machine();
1114
1115         /* parse rest of options */
1116         lang_standard_t standard        = STANDARD_DEFAULT;
1117         unsigned        features_on     = 0;
1118         unsigned        features_off    = 0;
1119         filetype_t      forced_filetype = FILETYPE_AUTODETECT;
1120         help_sections_t help            = HELP_NONE;
1121         bool            argument_errors = false;
1122         for (int i = 1; i < argc; ++i) {
1123                 const char *arg = argv[i];
1124                 if (arg[0] == '-' && arg[1] != '\0') {
1125                         /* an option */
1126                         const char *option = &arg[1];
1127                         if (option[0] == 'o') {
1128                                 GET_ARG_AFTER(outname, "-o");
1129                         } else if (option[0] == 'g') {
1130                                 /* TODO: parse -gX with 0<=x<=3... */
1131                                 set_be_option("debug=frameinfo");
1132                                 set_be_option("ia32-nooptcc=yes");
1133                         } else if (SINGLE_OPTION('c')) {
1134                                 mode = CompileAssemble;
1135                         } else if (SINGLE_OPTION('E')) {
1136                                 mode = PreprocessOnly;
1137                         } else if (SINGLE_OPTION('s')) {
1138                                 add_flag(&ldflags_obst, "-s");
1139                         } else if (SINGLE_OPTION('S')) {
1140                                 mode = Compile;
1141                         } else if (option[0] == 'O') {
1142                                 continue;
1143                         } else if (option[0] == 'I') {
1144                                 const char *opt;
1145                                 GET_ARG_AFTER(opt, "-I");
1146                                 add_flag(&cppflags_obst, "-I%s", opt);
1147                         } else if (option[0] == 'D') {
1148                                 const char *opt;
1149                                 GET_ARG_AFTER(opt, "-D");
1150                                 add_flag(&cppflags_obst, "-D%s", opt);
1151                         } else if (option[0] == 'U') {
1152                                 const char *opt;
1153                                 GET_ARG_AFTER(opt, "-U");
1154                                 add_flag(&cppflags_obst, "-U%s", opt);
1155                         } else if (option[0] == 'l') {
1156                                 const char *opt;
1157                                 GET_ARG_AFTER(opt, "-l");
1158                                 add_flag(&ldflags_obst, "-l%s", opt);
1159                         } else if (option[0] == 'L') {
1160                                 const char *opt;
1161                                 GET_ARG_AFTER(opt, "-L");
1162                                 add_flag(&ldflags_obst, "-L%s", opt);
1163                         } else if (SINGLE_OPTION('v')) {
1164                                 verbose = 1;
1165                         } else if (SINGLE_OPTION('w')) {
1166                                 add_flag(&cppflags_obst, "-w");
1167                                 disable_all_warnings();
1168                         } else if (option[0] == 'x') {
1169                                 const char *opt;
1170                                 GET_ARG_AFTER(opt, "-x");
1171                                 forced_filetype = get_filetype_from_string(opt);
1172                                 if (forced_filetype == FILETYPE_UNKNOWN) {
1173                                         fprintf(stderr, "Unknown language '%s'\n", opt);
1174                                         argument_errors = true;
1175                                 }
1176                         } else if (streq(option, "M")) {
1177                                 mode = PreprocessOnly;
1178                                 add_flag(&cppflags_obst, "-M");
1179                         } else if (streq(option, "MMD") ||
1180                                    streq(option, "MD")) {
1181                             construct_dep_target = true;
1182                                 add_flag(&cppflags_obst, "-%s", option);
1183                         } else if (streq(option, "MM")  ||
1184                                    streq(option, "MP")) {
1185                                 add_flag(&cppflags_obst, "-%s", option);
1186                         } else if (streq(option, "MT") ||
1187                                    streq(option, "MQ") ||
1188                                    streq(option, "MF")) {
1189                                 const char *opt;
1190                                 GET_ARG_AFTER(opt, "-MT");
1191                                 add_flag(&cppflags_obst, "-%s", option);
1192                                 add_flag(&cppflags_obst, "%s", opt);
1193                         } else if (streq(option, "include")) {
1194                                 const char *opt;
1195                                 GET_ARG_AFTER(opt, "-include");
1196                                 add_flag(&cppflags_obst, "-include");
1197                                 add_flag(&cppflags_obst, "%s", opt);
1198                         } else if (streq(option, "isystem")) {
1199                                 const char *opt;
1200                                 GET_ARG_AFTER(opt, "-isystem");
1201                                 add_flag(&cppflags_obst, "-isystem");
1202                                 add_flag(&cppflags_obst, "%s", opt);
1203                         } else if (streq(option, "pthread")) {
1204                                 /* set flags for the preprocessor */
1205                                 add_flag(&cppflags_obst, "-D_REENTRANT");
1206                                 /* set flags for the linker */
1207                                 add_flag(&ldflags_obst, "-lpthread");
1208                         } else if (streq(option, "nostdinc")
1209                                         || streq(option, "trigraphs")) {
1210                                 /* pass these through to the preprocessor */
1211                                 add_flag(&cppflags_obst, "%s", arg);
1212                         } else if (streq(option, "pipe")) {
1213                                 /* here for gcc compatibility */
1214                         } else if (streq(option, "static")) {
1215                                 add_flag(&ldflags_obst, "-static");
1216                         } else if (streq(option, "shared")) {
1217                                 add_flag(&ldflags_obst, "-shared");
1218                         } else if (option[0] == 'f') {
1219                                 char const *orig_opt;
1220                                 GET_ARG_AFTER(orig_opt, "-f");
1221
1222                                 if (strstart(orig_opt, "input-charset=")) {
1223                                         char const* const encoding = strchr(orig_opt, '=') + 1;
1224                                         input_encoding = encoding;
1225                                 } else if (strstart(orig_opt, "align-loops=") ||
1226                                            strstart(orig_opt, "align-jumps=") ||
1227                                            strstart(orig_opt, "align-functions=")) {
1228                                         fprintf(stderr, "ignoring gcc option '-f%s'\n", orig_opt);
1229                                 } else if (strstart(orig_opt, "visibility=")) {
1230                                         const char *val = strchr(orig_opt, '=')+1;
1231                                         elf_visibility_tag_t visibility
1232                                                 = get_elf_visibility_from_string(val);
1233                                         if (visibility == ELF_VISIBILITY_ERROR) {
1234                                                 fprintf(stderr, "invalid visibility '%s' specified\n",
1235                                                         val);
1236                                                 argument_errors = true;
1237                                         } else {
1238                                                 set_default_visibility(visibility);
1239                                         }
1240                                 } else if (strstart(orig_opt, "message-length=")) {
1241                                         /* ignore: would only affect error message format */
1242                                 } else if (streq(orig_opt, "fast-math") ||
1243                                            streq(orig_opt, "fp-fast")) {
1244                                         firm_fp_model = fp_model_fast;
1245                                 } else if (streq(orig_opt, "fp-precise")) {
1246                                         firm_fp_model = fp_model_precise;
1247                                 } else if (streq(orig_opt, "fp-strict")) {
1248                                         firm_fp_model = fp_model_strict;
1249                                 } else if (streq(orig_opt, "help")) {
1250                                         fprintf(stderr, "warning: -fhelp is deprecated\n");
1251                                         help |= HELP_OPTIMIZATION;
1252                                 } else {
1253                                         /* -f options which have an -fno- variant */
1254                                         char const *opt         = orig_opt;
1255                                         bool        truth_value = true;
1256                                         if (opt[0] == 'n' && opt[1] == 'o' && opt[2] == '-') {
1257                                                 truth_value = false;
1258                                                 opt += 3;
1259                                         }
1260
1261                                         if (streq(opt, "diagnostics-show-option")) {
1262                                                 diagnostics_show_option = truth_value;
1263                                         } else if (streq(opt, "dollars-in-identifiers")) {
1264                                                 allow_dollar_in_symbol = truth_value;
1265                                         } else if (streq(opt, "omit-frame-pointer")) {
1266                                                 set_be_option(truth_value ? "omitfp" : "omitfp=no");
1267                                         } else if (streq(opt, "short-wchar")) {
1268                                                 wchar_atomic_kind = truth_value ? ATOMIC_TYPE_USHORT
1269                                                         : ATOMIC_TYPE_INT;
1270                                         } else if (streq(opt, "show-column")) {
1271                                                 show_column = truth_value;
1272                                         } else if (streq(opt, "signed-char")) {
1273                                                 char_is_signed = truth_value;
1274                                         } else if (streq(opt, "strength-reduce")) {
1275                                                 /* does nothing, for gcc compatibility (even gcc does
1276                                                  * nothing for this switch anymore) */
1277                                         } else if (streq(opt, "syntax-only")) {
1278                                                 mode = truth_value ? ParseOnly : CompileAssembleLink;
1279                                         } else if (streq(opt, "unsigned-char")) {
1280                                                 char_is_signed = !truth_value;
1281                                         } else if (streq(opt, "freestanding")) {
1282                                                 freestanding = truth_value;
1283                                         } else if (streq(opt, "hosted")) {
1284                                                 freestanding = !truth_value;
1285                                         } else if (streq(opt, "profile-generate")) {
1286                                                 profile_generate = truth_value;
1287                                         } else if (streq(opt, "profile-use")) {
1288                                                 profile_use = truth_value;
1289                                         } else if (!truth_value &&
1290                                                    streq(opt, "asynchronous-unwind-tables")) {
1291                                             /* nothing todo, a gcc feature which we do not support
1292                                              * anyway was deactivated */
1293                                         } else if (streq(opt, "verbose-asm")) {
1294                                                 /* ignore: we always print verbose assembler */
1295                                         } else if (streq(opt, "jump-tables")             ||
1296                                                    streq(opt, "expensive-optimizations") ||
1297                                                    streq(opt, "common")                  ||
1298                                                    streq(opt, "optimize-sibling-calls")  ||
1299                                                    streq(opt, "align-loops")             ||
1300                                                    streq(opt, "align-jumps")             ||
1301                                                    streq(opt, "align-functions")         ||
1302                                                    streq(opt, "unroll-loops")            ||
1303                                                    streq(opt, "PIC")                     ||
1304                                                    streq(opt, "stack-protector")         ||
1305                                                    streq(opt, "stack-protector-all")) {
1306                                                 fprintf(stderr, "ignoring gcc option '-f%s'\n", orig_opt);
1307                                         } else {
1308                                                 int res = firm_option(orig_opt);
1309                                                 if (res == 0) {
1310                                                         fprintf(stderr, "error: unknown Firm option '-f%s'\n",
1311                                                                 orig_opt);
1312                                                         argument_errors = true;
1313                                                         continue;
1314                                                 }
1315                                         }
1316                                 }
1317                         } else if (option[0] == 'b') {
1318                                 const char *opt;
1319                                 GET_ARG_AFTER(opt, "-b");
1320
1321                                 if (streq(opt, "help")) {
1322                                         fprintf(stderr, "warning: -bhelp is deprecated (use --help-firm)\n");
1323                                         help |= HELP_FIRM;
1324                                 } else {
1325                                         int res = be_parse_arg(opt);
1326                                         if (res == 0) {
1327                                                 fprintf(stderr, "error: unknown Firm backend option '-b %s'\n",
1328                                                                 opt);
1329                                                 argument_errors = true;
1330                                         } else if (strstart(opt, "isa=")) {
1331                                                 strncpy(cpu_arch, opt, sizeof(cpu_arch));
1332                                         }
1333                                 }
1334                         } else if (option[0] == 'W') {
1335                                 if (strstart(option + 1, "p,")) {
1336                                         // pass options directly to the preprocessor
1337                                         const char *opt;
1338                                         GET_ARG_AFTER(opt, "-Wp,");
1339                                         add_flag(&cppflags_obst, "-Wp,%s", opt);
1340                                 } else if (strstart(option + 1, "l,")) {
1341                                         // pass options directly to the linker
1342                                         const char *opt;
1343                                         GET_ARG_AFTER(opt, "-Wl,");
1344                                         add_flag(&ldflags_obst, "-Wl,%s", opt);
1345                                 } else if (streq(option + 1, "no-trigraphs")
1346                                                         || streq(option + 1, "undef")
1347                                                         || streq(option + 1, "missing-include-dirs")
1348                                                         || streq(option + 1, "endif-labels")) {
1349                                         add_flag(&cppflags_obst, "%s", arg);
1350                                 } else if (streq(option+1, "init-self")) {
1351                                         /* ignored (same as gcc does) */
1352                                 } else if (streq(option+1, "format-y2k")
1353                                            || streq(option+1, "format-security")
1354                                            || streq(option+1, "old-style-declaration")
1355                                            || streq(option+1, "type-limits")) {
1356                                     /* ignore (gcc compatibility) */
1357                                 } else {
1358                                         set_warning_opt(&option[1]);
1359                                 }
1360                         } else if (option[0] == 'm') {
1361                                 /* -m options */
1362                                 const char *opt;
1363                                 char arch_opt[64];
1364
1365                                 GET_ARG_AFTER(opt, "-m");
1366                                 if (strstart(opt, "target=")) {
1367                                         GET_ARG_AFTER(opt, "-mtarget=");
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, "triple=")) {
1376                                         GET_ARG_AFTER(opt, "-mtriple=");
1377                                         if (!parse_target_triple(opt)) {
1378                                                 argument_errors = true;
1379                                         } else {
1380                                                 const char *isa = setup_target_machine();
1381                                                 strncpy(cpu_arch, isa, sizeof(cpu_arch));
1382                                                 target_triple = opt;
1383                                         }
1384                                 } else if (strstart(opt, "arch=")) {
1385                                         GET_ARG_AFTER(opt, "-march=");
1386                                         snprintf(arch_opt, sizeof(arch_opt), "%s-arch=%s", cpu_arch, opt);
1387                                         int res = be_parse_arg(arch_opt);
1388                                         snprintf(arch_opt, sizeof(arch_opt), "%s-opt=%s", cpu_arch, opt);
1389                                         res &= be_parse_arg(arch_opt);
1390
1391                                         if (res == 0) {
1392                                                 fprintf(stderr, "Unknown architecture '%s'\n", arch_opt);
1393                                                 argument_errors = true;
1394                                         }
1395                                 } else if (strstart(opt, "tune=")) {
1396                                         GET_ARG_AFTER(opt, "-mtune=");
1397                                         snprintf(arch_opt, sizeof(arch_opt), "%s-opt=%s", cpu_arch, opt);
1398                                         int res = be_parse_arg(arch_opt);
1399                                         if (res == 0)
1400                                                 argument_errors = true;
1401                                 } else if (strstart(opt, "cpu=")) {
1402                                         GET_ARG_AFTER(opt, "-mcpu=");
1403                                         snprintf(arch_opt, sizeof(arch_opt), "%s-arch=%s", cpu_arch, opt);
1404                                         int res = be_parse_arg(arch_opt);
1405                                         if (res == 0)
1406                                                 argument_errors = true;
1407                                 } else if (strstart(opt, "fpmath=")) {
1408                                         GET_ARG_AFTER(opt, "-mfpmath=");
1409                                         if (streq(opt, "387"))
1410                                                 opt = "x87";
1411                                         else if (streq(opt, "sse"))
1412                                                 opt = "sse2";
1413                                         else {
1414                                                 fprintf(stderr, "error: option -mfpmath supports only 387 or sse\n");
1415                                                 argument_errors = true;
1416                                         }
1417                                         if (!argument_errors) {
1418                                                 snprintf(arch_opt, sizeof(arch_opt), "%s-fpunit=%s", cpu_arch, opt);
1419                                                 int res = be_parse_arg(arch_opt);
1420                                                 if (res == 0)
1421                                                         argument_errors = true;
1422                                         }
1423                                 } else if (strstart(opt, "preferred-stack-boundary=")) {
1424                                         GET_ARG_AFTER(opt, "-mpreferred-stack-boundary=");
1425                                         snprintf(arch_opt, sizeof(arch_opt), "%s-stackalign=%s", cpu_arch, opt);
1426                                         int res = be_parse_arg(arch_opt);
1427                                         if (res == 0)
1428                                                 argument_errors = true;
1429                                 } else if (streq(opt, "rtd")) {
1430                                         default_calling_convention = CC_STDCALL;
1431                                 } else if (strstart(opt, "regparm=")) {
1432                                         fprintf(stderr, "error: regparm convention not supported yet\n");
1433                                         argument_errors = true;
1434                                 } else if (streq(opt, "soft-float")) {
1435                                         add_flag(&ldflags_obst, "-msoft-float");
1436                                         snprintf(arch_opt, sizeof(arch_opt), "%s-fpunit=softfloat", cpu_arch);
1437                                         int res = be_parse_arg(arch_opt);
1438                                         if (res == 0)
1439                                                 argument_errors = true;
1440                                 } else if (streq(opt, "sse2")) {
1441                                         /* ignore for now, our x86 backend always uses sse when
1442                                          * sse is requested */
1443                                 } else {
1444                                         long int value = strtol(opt, NULL, 10);
1445                                         if (value == 0) {
1446                                                 fprintf(stderr, "error: wrong option '-m %s'\n",  opt);
1447                                                 argument_errors = true;
1448                                         } else if (value != 16 && value != 32 && value != 64) {
1449                                                 fprintf(stderr, "error: option -m supports only 16, 32 or 64\n");
1450                                                 argument_errors = true;
1451                                         } else {
1452                                                 unsigned machine_size = (unsigned)value;
1453                                                 /* TODO: choose/change backend based on this */
1454                                                 add_flag(&cppflags_obst, "-m%u", machine_size);
1455                                                 add_flag(&asflags_obst, "-m%u", machine_size);
1456                                                 add_flag(&ldflags_obst, "-m%u", machine_size);
1457                                         }
1458                                 }
1459                         } else if (streq(option, "pg")) {
1460                                 set_be_option("gprof");
1461                                 add_flag(&ldflags_obst, "-pg");
1462                         } else if (streq(option, "ansi")) {
1463                                 standard = STANDARD_ANSI;
1464                         } else if (streq(option, "pedantic")) {
1465                                 fprintf(stderr, "warning: ignoring gcc option '%s'\n", arg);
1466                         } else if (strstart(option, "std=")) {
1467                                 const char *const o = &option[4];
1468                                 standard =
1469                                         streq(o, "c++")            ? STANDARD_CXX98   :
1470                                         streq(o, "c++98")          ? STANDARD_CXX98   :
1471                                         streq(o, "c89")            ? STANDARD_C89     :
1472                                         streq(o, "c90")            ? STANDARD_C89     :
1473                                         streq(o, "c99")            ? STANDARD_C99     :
1474                                         streq(o, "c9x")            ? STANDARD_C99     : // deprecated
1475                                         streq(o, "gnu++98")        ? STANDARD_GNUXX98 :
1476                                         streq(o, "gnu89")          ? STANDARD_GNU89   :
1477                                         streq(o, "gnu99")          ? STANDARD_GNU99   :
1478                                         streq(o, "gnu9x")          ? STANDARD_GNU99   : // deprecated
1479                                         streq(o, "iso9899:1990")   ? STANDARD_C89     :
1480                                         streq(o, "iso9899:199409") ? STANDARD_C89AMD1 :
1481                                         streq(o, "iso9899:1999")   ? STANDARD_C99     :
1482                                         streq(o, "iso9899:199x")   ? STANDARD_C99     : // deprecated
1483                                         (fprintf(stderr, "warning: ignoring gcc option '%s'\n", arg), standard);
1484                         } else if (streq(option, "version")) {
1485                                 print_cparser_version();
1486                                 return EXIT_SUCCESS;
1487                         } else if (streq(option, "dumpversion")) {
1488                                 /* gcc compatibility option */
1489                                 print_cparser_version_short();
1490                                 return EXIT_SUCCESS;
1491                         } else if (strstart(option, "print-file-name=")) {
1492                                 GET_ARG_AFTER(print_file_name_file, "-print-file-name=");
1493                         } else if (option[0] == '-') {
1494                                 /* double dash option */
1495                                 ++option;
1496                                 if (streq(option, "gcc")) {
1497                                         features_on  |=  _GNUC;
1498                                         features_off &= ~_GNUC;
1499                                 } else if (streq(option, "no-gcc")) {
1500                                         features_on  &= ~_GNUC;
1501                                         features_off |=  _GNUC;
1502                                 } else if (streq(option, "ms")) {
1503                                         features_on  |=  _MS;
1504                                         features_off &= ~_MS;
1505                                 } else if (streq(option, "no-ms")) {
1506                                         features_on  &= ~_MS;
1507                                         features_off |=  _MS;
1508                                 } else if (streq(option, "strict")) {
1509                                         strict_mode = true;
1510                                 } else if (streq(option, "lextest")) {
1511                                         mode = LexTest;
1512                                 } else if (streq(option, "benchmark")) {
1513                                         mode = BenchmarkParser;
1514                                 } else if (streq(option, "print-ast")) {
1515                                         mode = PrintAst;
1516                                 } else if (streq(option, "print-implicit-cast")) {
1517                                         print_implicit_casts = true;
1518                                 } else if (streq(option, "print-parenthesis")) {
1519                                         print_parenthesis = true;
1520                                 } else if (streq(option, "print-fluffy")) {
1521                                         mode = PrintFluffy;
1522                                 } else if (streq(option, "print-jna")) {
1523                                         mode = PrintJna;
1524                                 } else if (streq(option, "jna-limit")) {
1525                                         ++i;
1526                                         if (i >= argc) {
1527                                                 fprintf(stderr, "error: "
1528                                                         "expected argument after '--jna-limit'\n");
1529                                                 argument_errors = true;
1530                                                 break;
1531                                         }
1532                                         jna_limit_output(argv[i]);
1533                                 } else if (streq(option, "jna-libname")) {
1534                                         ++i;
1535                                         if (i >= argc) {
1536                                                 fprintf(stderr, "error: "
1537                                                         "expected argument after '--jna-libname'\n");
1538                                                 argument_errors = true;
1539                                                 break;
1540                                         }
1541                                         jna_set_libname(argv[i]);
1542                                 } else if (streq(option, "time")) {
1543                                         do_timing = true;
1544                                 } else if (streq(option, "version")) {
1545                                         print_cparser_version();
1546                                         return EXIT_SUCCESS;
1547                                 } else if (streq(option, "help")) {
1548                                         help |= HELP_BASIC;
1549                                 } else if (streq(option, "help-parser")) {
1550                                         help |= HELP_PARSER;
1551                                 } else if (streq(option, "help-warnings")) {
1552                                         help |= HELP_WARNINGS;
1553                                 } else if (streq(option, "help-codegen")) {
1554                                         help |= HELP_CODEGEN;
1555                                 } else if (streq(option, "help-linker")) {
1556                                         help |= HELP_LINKER;
1557                                 } else if (streq(option, "help-optimization")) {
1558                                         help |= HELP_OPTIMIZATION;
1559                                 } else if (streq(option, "help-language-tools")) {
1560                                         help |= HELP_LANGUAGETOOLS;
1561                                 } else if (streq(option, "help-debug")) {
1562                                         help |= HELP_DEBUG;
1563                                 } else if (streq(option, "help-firm")) {
1564                                         help |= HELP_FIRM;
1565                                 } else if (streq(option, "help-all")) {
1566                                         help |= HELP_ALL;
1567                                 } else if (streq(option, "dump-function")) {
1568                                         ++i;
1569                                         if (i >= argc) {
1570                                                 fprintf(stderr, "error: "
1571                                                         "expected argument after '--dump-function'\n");
1572                                                 argument_errors = true;
1573                                                 break;
1574                                         }
1575                                         dumpfunction = argv[i];
1576                                         mode         = CompileDump;
1577                                 } else if (streq(option, "export-ir")) {
1578                                         mode = CompileExportIR;
1579                                 } else if (streq(option, "unroll-loops")) {
1580                                         /* ignore (gcc compatibility) */
1581                                 } else {
1582                                         fprintf(stderr, "error: unknown argument '%s'\n", arg);
1583                                         argument_errors = true;
1584                                 }
1585                         } else {
1586                                 fprintf(stderr, "error: unknown argument '%s'\n", arg);
1587                                 argument_errors = true;
1588                         }
1589                 } else {
1590                         filetype_t type = forced_filetype;
1591                         if (type == FILETYPE_AUTODETECT) {
1592                                 if (streq(arg, "-")) {
1593                                         /* - implicitly means C source file */
1594                                         type = FILETYPE_C;
1595                                 } else {
1596                                         const char *suffix = strrchr(arg, '.');
1597                                         /* Ensure there is at least one char before the suffix */
1598                                         if (suffix != NULL && suffix != arg) {
1599                                                 ++suffix;
1600                                                 type =
1601                                                         streq(suffix, "S")   ? FILETYPE_ASSEMBLER              :
1602                                                         streq(suffix, "a")   ? FILETYPE_OBJECT                 :
1603                                                         streq(suffix, "c")   ? FILETYPE_C                      :
1604                                                         streq(suffix, "i")   ? FILETYPE_PREPROCESSED_C         :
1605                                                         streq(suffix, "C")   ? FILETYPE_CXX                    :
1606                                                         streq(suffix, "cc")  ? FILETYPE_CXX                    :
1607                                                         streq(suffix, "cp")  ? FILETYPE_CXX                    :
1608                                                         streq(suffix, "cpp") ? FILETYPE_CXX                    :
1609                                                         streq(suffix, "CPP") ? FILETYPE_CXX                    :
1610                                                         streq(suffix, "cxx") ? FILETYPE_CXX                    :
1611                                                         streq(suffix, "c++") ? FILETYPE_CXX                    :
1612                                                         streq(suffix, "ii")  ? FILETYPE_PREPROCESSED_CXX       :
1613                                                         streq(suffix, "h")   ? FILETYPE_C                      :
1614                                                         streq(suffix, "ir")  ? FILETYPE_IR                     :
1615                                                         streq(suffix, "o")   ? FILETYPE_OBJECT                 :
1616                                                         streq(suffix, "s")   ? FILETYPE_PREPROCESSED_ASSEMBLER :
1617                                                         streq(suffix, "so")  ? FILETYPE_OBJECT                 :
1618                                                         FILETYPE_OBJECT; /* gcc behavior: unknown file extension means object file */
1619                                         }
1620                                 }
1621                         }
1622
1623                         file_list_entry_t *entry
1624                                 = obstack_alloc(&file_obst, sizeof(entry[0]));
1625                         memset(entry, 0, sizeof(entry[0]));
1626                         entry->name = arg;
1627                         entry->type = type;
1628
1629                         if (last_file != NULL) {
1630                                 last_file->next = entry;
1631                         } else {
1632                                 files = entry;
1633                         }
1634                         last_file = entry;
1635                 }
1636         }
1637
1638         if (help != HELP_NONE) {
1639                 print_help(argv[0], help);
1640                 return !argument_errors;
1641         }
1642
1643         if (print_file_name_file != NULL) {
1644                 print_file_name(print_file_name_file);
1645                 return EXIT_SUCCESS;
1646         }
1647         if (files == NULL) {
1648                 fprintf(stderr, "error: no input files specified\n");
1649                 argument_errors = true;
1650         }
1651
1652         if (argument_errors) {
1653                 usage(argv[0]);
1654                 return EXIT_FAILURE;
1655         }
1656
1657         /* apply some effects from switches */
1658         c_mode |= features_on;
1659         c_mode &= ~features_off;
1660         if (profile_generate) {
1661                 add_flag(&ldflags_obst, "-lfirmprof");
1662                 set_be_option("profilegenerate");
1663         }
1664         if (profile_use) {
1665                 set_be_option("profileuse");
1666         }
1667
1668         init_symbol_table();
1669         init_types_and_adjust();
1670         init_typehash();
1671         init_basic_types();
1672         if (c_mode & _CXX) {
1673                 init_wchar_types(ATOMIC_TYPE_WCHAR_T);
1674         } else {
1675                 init_wchar_types(wchar_atomic_kind);
1676         }
1677         init_preprocessor();
1678         init_ast();
1679         init_parser();
1680         init_ast2firm();
1681         init_mangle();
1682
1683         if (do_timing)
1684                 timer_init();
1685
1686         if (construct_dep_target) {
1687                 if (outname != 0 && strlen(outname) >= 2) {
1688                         get_output_name(dep_target, sizeof(dep_target), outname, ".d");
1689                 } else {
1690                         get_output_name(dep_target, sizeof(dep_target), files->name, ".d");
1691                 }
1692         } else {
1693                 dep_target[0] = '\0';
1694         }
1695
1696         char outnamebuf[4096];
1697         if (outname == NULL) {
1698                 const char *filename = files->name;
1699
1700                 switch(mode) {
1701                 case BenchmarkParser:
1702                 case PrintAst:
1703                 case PrintFluffy:
1704                 case PrintJna:
1705                 case LexTest:
1706                 case PreprocessOnly:
1707                 case ParseOnly:
1708                         outname = "-";
1709                         break;
1710                 case Compile:
1711                         get_output_name(outnamebuf, sizeof(outnamebuf), filename, ".s");
1712                         outname = outnamebuf;
1713                         break;
1714                 case CompileAssemble:
1715                         get_output_name(outnamebuf, sizeof(outnamebuf), filename, ".o");
1716                         outname = outnamebuf;
1717                         break;
1718                 case CompileDump:
1719                         get_output_name(outnamebuf, sizeof(outnamebuf), dumpfunction,
1720                                         ".vcg");
1721                         outname = outnamebuf;
1722                         break;
1723                 case CompileExportIR:
1724                         get_output_name(outnamebuf, sizeof(outnamebuf), filename, ".ir");
1725                         outname = outnamebuf;
1726                         break;
1727                 case CompileAssembleLink:
1728                         if (firm_is_windows_os(target_machine)) {
1729                                 outname = "a.exe";
1730                         } else {
1731                                 outname = "a.out";
1732                         }
1733                         break;
1734                 }
1735         }
1736
1737         assert(outname != NULL);
1738
1739         FILE *out;
1740         if (streq(outname, "-")) {
1741                 out = stdout;
1742         } else {
1743                 out = fopen(outname, "w");
1744                 if (out == NULL) {
1745                         fprintf(stderr, "Could not open '%s' for writing: %s\n", outname,
1746                                         strerror(errno));
1747                         return EXIT_FAILURE;
1748                 }
1749         }
1750
1751         file_list_entry_t *file;
1752         bool               already_constructed_firm = false;
1753         for (file = files; file != NULL; file = file->next) {
1754                 char            asm_tempfile[1024];
1755                 const char     *filename = file->name;
1756                 filetype_t      filetype = file->type;
1757                 lang_standard_t file_standard = standard;
1758
1759                 if (filetype == FILETYPE_OBJECT)
1760                         continue;
1761                 switch (file_standard) {
1762                 case STANDARD_ANSI:
1763                         switch (filetype) {
1764                         case FILETYPE_C:
1765                         case FILETYPE_PREPROCESSED_C:   file_standard = STANDARD_C89;   break;
1766                         case FILETYPE_CXX:
1767                         case FILETYPE_PREPROCESSED_CXX: file_standard = STANDARD_CXX98; break;
1768                         default:                        break;
1769                         }
1770                         break;
1771
1772                 case STANDARD_DEFAULT:
1773                         switch (filetype) {
1774                         case FILETYPE_C:
1775                         case FILETYPE_PREPROCESSED_C:   file_standard = STANDARD_GNU99;   break;
1776                         case FILETYPE_CXX:
1777                         case FILETYPE_PREPROCESSED_CXX: file_standard = STANDARD_GNUXX98; break;
1778                         default:                        break;
1779                         }
1780                         break;
1781
1782                 default: break;
1783                 }
1784
1785                 FILE *in = NULL;
1786                 if (mode == LexTest) {
1787                         if (in == NULL)
1788                                 in = open_file(filename);
1789                         lextest(in, filename);
1790                         fclose(in);
1791                         return EXIT_SUCCESS;
1792                 }
1793
1794                 FILE *preprocessed_in = NULL;
1795                 filetype_t next_filetype = filetype;
1796                 switch (filetype) {
1797                         case FILETYPE_C:
1798                                 next_filetype = FILETYPE_PREPROCESSED_C;
1799                                 goto preprocess;
1800                         case FILETYPE_CXX:
1801                                 next_filetype = FILETYPE_PREPROCESSED_CXX;
1802                                 goto preprocess;
1803                         case FILETYPE_ASSEMBLER:
1804                                 next_filetype = FILETYPE_PREPROCESSED_ASSEMBLER;
1805                                 goto preprocess;
1806 preprocess:
1807                                 /* no support for input on FILE* yet */
1808                                 if (in != NULL)
1809                                         panic("internal compiler error: in for preprocessor != NULL");
1810
1811                                 preprocessed_in = preprocess(filename, filetype,
1812                                                              file_standard);
1813                                 if (mode == PreprocessOnly) {
1814                                         copy_file(out, preprocessed_in);
1815                                         int pp_result = pclose(preprocessed_in);
1816                                         fclose(out);
1817                                         /* remove output file in case of error */
1818                                         if (out != stdout && pp_result != EXIT_SUCCESS) {
1819                                                 unlink(outname);
1820                                         }
1821                                         return pp_result;
1822                                 }
1823
1824                                 in = preprocessed_in;
1825                                 filetype = next_filetype;
1826                                 break;
1827
1828                         default:
1829                                 break;
1830                 }
1831
1832                 FILE *asm_out;
1833                 if (mode == Compile) {
1834                         asm_out = out;
1835                 } else {
1836                         asm_out = make_temp_file(asm_tempfile, sizeof(asm_tempfile), "ccs");
1837                 }
1838
1839                 if (in == NULL)
1840                         in = open_file(filename);
1841
1842                 /* preprocess and compile */
1843                 if (filetype == FILETYPE_PREPROCESSED_C) {
1844                         switch (file_standard) {
1845                         case STANDARD_C89:     c_mode = _C89;                break;
1846                         /* TODO determine difference between these two */
1847                         case STANDARD_C89AMD1: c_mode = _C89;                break;
1848                         case STANDARD_C99:     c_mode = _C89 | _C99;         break;
1849                         case STANDARD_GNU89:   c_mode = _C89 |        _GNUC; break;
1850
1851                         case STANDARD_ANSI:
1852                         case STANDARD_CXX98:
1853                         case STANDARD_GNUXX98:
1854                         case STANDARD_DEFAULT:
1855                                 fprintf(stderr, "warning: command line option \"-std=%s\" is not valid for C\n", str_lang_standard(file_standard));
1856                                 /* FALLTHROUGH */
1857                         case STANDARD_GNU99:   c_mode = _C89 | _C99 | _GNUC; break;
1858                         }
1859                         goto do_parsing;
1860                 } else if (filetype == FILETYPE_PREPROCESSED_CXX) {
1861                         switch (file_standard) {
1862                         case STANDARD_CXX98: c_mode = _CXX; break;
1863
1864                         case STANDARD_ANSI:
1865                         case STANDARD_C89:
1866                         case STANDARD_C89AMD1:
1867                         case STANDARD_C99:
1868                         case STANDARD_GNU89:
1869                         case STANDARD_GNU99:
1870                         case STANDARD_DEFAULT:
1871                                 fprintf(stderr, "warning: command line option \"-std=%s\" is not valid for C++\n", str_lang_standard(file_standard));
1872                                 /* FALLTHROUGH */
1873                         case STANDARD_GNUXX98: c_mode = _CXX | _GNUC; break;
1874                         }
1875
1876 do_parsing:
1877                         c_mode |= features_on;
1878                         c_mode &= ~features_off;
1879
1880                         /* do the actual parsing */
1881                         ir_timer_t *t_parsing = ir_timer_new();
1882                         timer_register(t_parsing, "Frontend: Parsing");
1883                         timer_push(t_parsing);
1884                         init_tokens();
1885                         translation_unit_t *const unit = do_parsing(in, filename);
1886                         timer_pop(t_parsing);
1887
1888                         /* prints the AST even if errors occurred */
1889                         if (mode == PrintAst) {
1890                                 print_to_file(out);
1891                                 print_ast(unit);
1892                         }
1893
1894                         if (error_count > 0) {
1895                                 /* parsing failed because of errors */
1896                                 fprintf(stderr, "%u error(s), %u warning(s)\n", error_count,
1897                                         warning_count);
1898                                 result = EXIT_FAILURE;
1899                                 continue;
1900                         } else if (warning_count > 0) {
1901                                 fprintf(stderr, "%u warning(s)\n", warning_count);
1902                         }
1903
1904                         if (in == preprocessed_in) {
1905                                 int pp_result = pclose(preprocessed_in);
1906                                 if (pp_result != EXIT_SUCCESS) {
1907                                         /* remove output file */
1908                                         if (out != stdout)
1909                                                 unlink(outname);
1910                                         return EXIT_FAILURE;
1911                                 }
1912                         }
1913
1914                         if (mode == BenchmarkParser) {
1915                                 return result;
1916                         } else if (mode == PrintFluffy) {
1917                                 write_fluffy_decls(out, unit);
1918                                 continue;
1919                         } else if (mode == PrintJna) {
1920                                 write_jna_decls(out, unit);
1921                                 continue;
1922                         }
1923
1924                         /* build the firm graph */
1925                         ir_timer_t *t_construct = ir_timer_new();
1926                         timer_register(t_construct, "Frontend: Graph construction");
1927                         timer_push(t_construct);
1928                         if (already_constructed_firm) {
1929                                 panic("compiling multiple files/translation units not possible");
1930                         }
1931                         init_implicit_optimizations();
1932                         translation_unit_to_firm(unit);
1933                         already_constructed_firm = true;
1934                         timer_pop(t_construct);
1935
1936 graph_built:
1937                         if (mode == ParseOnly) {
1938                                 continue;
1939                         }
1940
1941                         if (mode == CompileDump) {
1942                                 /* find irg */
1943                                 ident    *id     = new_id_from_str(dumpfunction);
1944                                 ir_graph *irg    = NULL;
1945                                 int       n_irgs = get_irp_n_irgs();
1946                                 for (int i = 0; i < n_irgs; ++i) {
1947                                         ir_graph *tirg   = get_irp_irg(i);
1948                                         ident    *irg_id = get_entity_ident(get_irg_entity(tirg));
1949                                         if (irg_id == id) {
1950                                                 irg = tirg;
1951                                                 break;
1952                                         }
1953                                 }
1954
1955                                 if (irg == NULL) {
1956                                         fprintf(stderr, "No graph for function '%s' found\n",
1957                                                 dumpfunction);
1958                                         return EXIT_FAILURE;
1959                                 }
1960
1961                                 dump_ir_graph_file(out, irg);
1962                                 fclose(out);
1963                                 return EXIT_SUCCESS;
1964                         }
1965
1966                         if (mode == CompileExportIR) {
1967                                 ir_export_file(out);
1968                                 if (ferror(out) != 0) {
1969                                         fprintf(stderr, "Error while writing to output\n");
1970                                         return EXIT_FAILURE;
1971                                 }
1972                                 return EXIT_SUCCESS;
1973                         }
1974
1975                         generate_code(asm_out, filename);
1976                         if (asm_out != out) {
1977                                 fclose(asm_out);
1978                         }
1979                 } else if (filetype == FILETYPE_IR) {
1980                         fclose(in);
1981                         int res = ir_import(filename);
1982                         if (res != 0) {
1983                                 fprintf(stderr, "Firm-Program import failed\n");
1984                                 return EXIT_FAILURE;
1985                         }
1986                         goto graph_built;
1987                 } else if (filetype == FILETYPE_PREPROCESSED_ASSEMBLER) {
1988                         copy_file(asm_out, in);
1989                         if (in == preprocessed_in) {
1990                                 int pp_result = pclose(preprocessed_in);
1991                                 if (pp_result != EXIT_SUCCESS) {
1992                                         /* remove output in error case */
1993                                         if (out != stdout)
1994                                                 unlink(outname);
1995                                         return pp_result;
1996                                 }
1997                         }
1998                         if (asm_out != out) {
1999                                 fclose(asm_out);
2000                         }
2001                 }
2002
2003                 if (mode == Compile)
2004                         continue;
2005
2006                 /* if we're here then we have preprocessed assembly */
2007                 filename = asm_tempfile;
2008                 filetype = FILETYPE_PREPROCESSED_ASSEMBLER;
2009
2010                 /* assemble */
2011                 if (filetype == FILETYPE_PREPROCESSED_ASSEMBLER) {
2012                         char        temp[1024];
2013                         const char *filename_o;
2014                         if (mode == CompileAssemble) {
2015                                 fclose(out);
2016                                 filename_o = outname;
2017                         } else {
2018                                 FILE *tempf = make_temp_file(temp, sizeof(temp), "cco");
2019                                 fclose(tempf);
2020                                 filename_o = temp;
2021                         }
2022
2023                         assemble(filename_o, filename);
2024
2025                         size_t len = strlen(filename_o) + 1;
2026                         filename = obstack_copy(&file_obst, filename_o, len);
2027                         filetype = FILETYPE_OBJECT;
2028                 }
2029
2030                 /* ok we're done here, process next file */
2031                 file->name = filename;
2032                 file->type = filetype;
2033         }
2034
2035         if (result != EXIT_SUCCESS) {
2036                 if (out != stdout)
2037                         unlink(outname);
2038                 return result;
2039         }
2040
2041         /* link program file */
2042         if (mode == CompileAssembleLink) {
2043                 obstack_1grow(&ldflags_obst, '\0');
2044                 const char *flags = obstack_finish(&ldflags_obst);
2045
2046                 /* construct commandline */
2047                 const char *linker = getenv("CPARSER_LINK");
2048                 if (linker != NULL) {
2049                         obstack_printf(&file_obst, "%s ", linker);
2050                 } else {
2051                         if (target_triple != NULL)
2052                                 obstack_printf(&file_obst, "%s-", target_triple);
2053                         obstack_printf(&file_obst, "%s ", LINKER);
2054                 }
2055
2056                 for (file_list_entry_t *entry = files; entry != NULL;
2057                                 entry = entry->next) {
2058                         if (entry->type != FILETYPE_OBJECT)
2059                                 continue;
2060
2061                         add_flag(&file_obst, "%s", entry->name);
2062                 }
2063
2064                 add_flag(&file_obst, "-o");
2065                 add_flag(&file_obst, outname);
2066                 obstack_printf(&file_obst, "%s", flags);
2067                 obstack_1grow(&file_obst, '\0');
2068
2069                 char *commandline = obstack_finish(&file_obst);
2070
2071                 if (verbose) {
2072                         puts(commandline);
2073                 }
2074                 int err = system(commandline);
2075                 if (err != EXIT_SUCCESS) {
2076                         fprintf(stderr, "linker reported an error\n");
2077                         return EXIT_FAILURE;
2078                 }
2079         }
2080
2081         if (do_timing)
2082                 timer_term(stderr);
2083
2084         obstack_free(&cppflags_obst, NULL);
2085         obstack_free(&ldflags_obst, NULL);
2086         obstack_free(&asflags_obst, NULL);
2087         obstack_free(&file_obst, NULL);
2088
2089         gen_firm_finish();
2090         exit_mangle();
2091         exit_ast2firm();
2092         exit_parser();
2093         exit_ast();
2094         exit_preprocessor();
2095         exit_typehash();
2096         exit_types();
2097         exit_tokens();
2098         exit_symbol_table();
2099         return EXIT_SUCCESS;
2100 }