nsz Git - cparser/blob - main.c

   1 /*
   2  * This file is part of cparser.
   3  * Copyright (C) 2007-2009 Matthias Braun <matze@braunis.de>
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License
   7  * as published by the Free Software Foundation; either version 2
   8  * of the License, or (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  18  * 02111-1307, USA.
  19  */
  20 #include <config.h>
  21
  22 #define _GNU_SOURCE
  23
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26 #include <stdbool.h>
  27 #include <errno.h>
  28 #include <string.h>
  29 #include <assert.h>
  30
  31 #ifdef _WIN32
  32
  33 #include <fcntl.h>
  34 #include <io.h>
  35
  36 /* no eXecute on Win32 */
  37 #define X_OK 0
  38 #define W_OK 2
  39 #define R_OK 4
  40
  41 #define O_RDWR          _O_RDWR
  42 #define O_CREAT         _O_CREAT
  43 #define O_EXCL          _O_EXCL
  44 #define O_BINARY        _O_BINARY
  45
  46 /* remap some names, we are not in the POSIX world */
  47 #define access(fname, mode)      _access(fname, mode)
  48 #define mktemp(tmpl)             _mktemp(tmpl)
  49 #define open(fname, oflag, mode) _open(fname, oflag, mode)
  50 #define fdopen(fd, mode)         _fdopen(fd, mode)
  51 #define popen(cmd, mode)         _popen(cmd, mode)
  52 #define pclose(file)             _pclose(file)
  53 #define unlink(filename)         _unlink(filename)
  54
  55 #else
  56 #include <unistd.h>
  57 #define HAVE_MKSTEMP
  58 #endif
  59
  60 #include <libfirm/firm.h>
  61 #include <libfirm/be.h>
  62
  63 #include "lexer.h"
  64 #include "token_t.h"
  65 #include "types.h"
  66 #include "type_hash.h"
  67 #include "parser.h"
  68 #include "type_t.h"
  69 #include "ast2firm.h"
  70 #include "diagnostic.h"
  71 #include "lang_features.h"
  72 #include "driver/firm_opt.h"
  73 #include "driver/firm_timing.h"
  74 #include "driver/firm_machine.h"
  75 #include "adt/error.h"
  76 #include "adt/strutil.h"
  77 #include "wrappergen/write_fluffy.h"
  78 #include "wrappergen/write_jna.h"
  79 #include "revision.h"
  80 #include "warning.h"
  81 #include "help.h"
  82 #include "mangle.h"
  83 #include "printer.h"
  84
  85 #ifndef PREPROCESSOR
  86 #ifndef __WIN32__
  87 #define PREPROCESSOR "gcc -E -U__STRICT_ANSI__"
  88 #else
  89 #define PREPROCESSOR "cpp -U__STRICT_ANSI__"
  90 #endif
  91 #endif
  92
  93 #ifndef LINKER
  94 #define LINKER    "gcc"
  95 #endif
  96
  97 #ifndef ASSEMBLER
  98 #define ASSEMBLER "gcc -c -xassembler"
  99 #endif
 100
 101 unsigned int       c_mode                    = _C89 | _ANSI | _C99 | _GNUC;
 102 unsigned int       machine_size              = 32;
 103 bool               byte_order_big_endian     = false;
 104 bool               char_is_signed            = true;
 105 bool               strict_mode               = false;
 106 atomic_type_kind_t wchar_atomic_kind         = ATOMIC_TYPE_INT;
 107 unsigned           long_double_size          = 0;
 108 bool               enable_main_collect2_hack = false;
 109 bool               freestanding              = false;
 110
 111 static machine_triple_t *target_machine;
 112 static const char       *target_triple;
 113 static int               verbose;
 114 static bool              use_builtins;
 115 static struct obstack    cppflags_obst;
 116 static struct obstack    ldflags_obst;
 117 static struct obstack    asflags_obst;
 118 static char              dep_target[1024];
 119 static const char       *outname;
 120 static bool              define_intmax_types;
 121
 122 typedef enum lang_standard_t {
 123         STANDARD_DEFAULT, /* gnu99 (for C, GCC does gnu89) or gnu++98 (for C++) */
 124         STANDARD_ANSI,    /* c89 (for C) or c++98 (for C++) */
 125         STANDARD_C89,     /* ISO C90 (sic) */
 126         STANDARD_C90,     /* ISO C90 as modified in amendment 1 */
 127         STANDARD_C99,     /* ISO C99 */
 128         STANDARD_GNU89,   /* ISO C90 plus GNU extensions (including some C99) */
 129         STANDARD_GNU99,   /* ISO C99 plus GNU extensions */
 130         STANDARD_CXX98,   /* ISO C++ 1998 plus amendments */
 131         STANDARD_GNUXX98  /* ISO C++ 1998 plus amendments and GNU extensions */
 132 } lang_standard_t;
 133
 134 static lang_standard_t standard;
 135
 136 typedef struct file_list_entry_t file_list_entry_t;
 137
 138 typedef enum filetype_t {
 139         FILETYPE_AUTODETECT,
 140         FILETYPE_C,
 141         FILETYPE_PREPROCESSED_C,
 142         FILETYPE_CXX,
 143         FILETYPE_PREPROCESSED_CXX,
 144         FILETYPE_ASSEMBLER,
 145         FILETYPE_PREPROCESSED_ASSEMBLER,
 146         FILETYPE_OBJECT,
 147         FILETYPE_IR,
 148         FILETYPE_UNKNOWN
 149 } filetype_t;
 150
 151 struct file_list_entry_t {
 152         const char  *name; /**< filename or NULL for stdin */
 153         filetype_t   type;
 154         file_list_entry_t *next;
 155 };
 156
 157 static file_list_entry_t *temp_files;
 158
 159 static void get_output_name(char *buf, size_t buflen, const char *inputname,
 160                             const char *newext)
 161 {
 162         if (inputname == NULL)
 163                 inputname = "a";
 164
 165         char const *const last_slash = strrchr(inputname, '/');
 166         char const *const filename   =
 167                 last_slash != NULL ? last_slash + 1 : inputname;
 168         char const *const last_dot   = strrchr(filename, '.');
 169         char const *const name_end   =
 170                 last_dot != NULL ? last_dot : strchr(filename, '\0');
 171
 172         int const len = snprintf(buf, buflen, "%.*s%s",
 173                         (int)(name_end - filename), filename, newext);
 174 #ifdef _WIN32
 175         if (len < 0 || buflen <= (size_t)len)
 176 #else
 177         if (buflen <= (size_t)len)
 178 #endif
 179                 panic("filename too long");
 180 }
 181
 182 #include "gen_builtins.h"
 183
 184 static translation_unit_t *do_parsing(FILE *const in, const char *const input_name)
 185 {
 186         start_parsing();
 187
 188         if (use_builtins) {
 189                 lexer_open_buffer(builtins, sizeof(builtins)-1, "<builtin>");
 190                 parse();
 191         }
 192
 193         lexer_open_stream(in, input_name);
 194         parse();
 195
 196         translation_unit_t *unit = finish_parsing();
 197         return unit;
 198 }
 199
 200 static void lextest(FILE *in, const char *fname)
 201 {
 202         lexer_open_stream(in, fname);
 203
 204         do {
 205                 lexer_next_preprocessing_token();
 206                 print_token(stdout, &lexer_token);
 207                 putchar('\n');
 208         } while (lexer_token.type != T_EOF);
 209 }
 210
 211 static void add_flag(struct obstack *obst, const char *format, ...)
 212 {
 213         char buf[65536];
 214         va_list ap;
 215
 216         va_start(ap, format);
 217 #ifdef _WIN32
 218         int len =
 219 #endif
 220                 vsnprintf(buf, sizeof(buf), format, ap);
 221         va_end(ap);
 222
 223         obstack_1grow(obst, ' ');
 224 #ifdef _WIN32
 225         obstack_1grow(obst, '"');
 226         obstack_grow(obst, buf, len);
 227         obstack_1grow(obst, '"');
 228 #else
 229         /* escape stuff... */
 230         for (char *c = buf; *c != '\0'; ++c) {
 231                 switch(*c) {
 232                 case ' ':
 233                 case '"':
 234                 case '$':
 235                 case '&':
 236                 case '(':
 237                 case ')':
 238                 case ';':
 239                 case '<':
 240                 case '>':
 241                 case '\'':
 242                 case '\\':
 243                 case '\n':
 244                 case '\r':
 245                 case '\t':
 246                 case '`':
 247                 case '|':
 248                         obstack_1grow(obst, '\\');
 249                         /* FALLTHROUGH */
 250                 default:
 251                         obstack_1grow(obst, *c);
 252                         break;
 253                 }
 254         }
 255 #endif
 256 }
 257
 258 static const char *type_to_string(type_t *type)
 259 {
 260         assert(type->kind == TYPE_ATOMIC);
 261         return get_atomic_kind_name(type->atomic.akind);
 262 }
 263
 264 static FILE *preprocess(const char *fname, filetype_t filetype)
 265 {
 266         static const char *common_flags = NULL;
 267
 268         if (common_flags == NULL) {
 269                 obstack_1grow(&cppflags_obst, '\0');
 270                 const char *flags = obstack_finish(&cppflags_obst);
 271
 272                 /* setup default defines */
 273                 add_flag(&cppflags_obst, "-U__WCHAR_TYPE__");
 274                 add_flag(&cppflags_obst, "-D__WCHAR_TYPE__=%s", type_to_string(type_wchar_t));
 275                 add_flag(&cppflags_obst, "-U__SIZE_TYPE__");
 276                 add_flag(&cppflags_obst, "-D__SIZE_TYPE__=%s", type_to_string(type_size_t));
 277
 278                 add_flag(&cppflags_obst, "-U__VERSION__");
 279                 add_flag(&cppflags_obst, "-D__VERSION__=\"%s\"", cparser_REVISION);
 280
 281                 if (define_intmax_types) {
 282                         add_flag(&cppflags_obst, "-U__INTMAX_TYPE__");
 283                         add_flag(&cppflags_obst, "-D__INTMAX_TYPE__=%s", type_to_string(type_intmax_t));
 284                         add_flag(&cppflags_obst, "-U__UINTMAX_TYPE__");
 285                         add_flag(&cppflags_obst, "-D__UINTMAX_TYPE__=%s", type_to_string(type_uintmax_t));
 286                 }
 287
 288                 if (flags[0] != '\0') {
 289                         size_t len = strlen(flags);
 290                         obstack_1grow(&cppflags_obst, ' ');
 291                         obstack_grow(&cppflags_obst, flags, len);
 292                 }
 293                 obstack_1grow(&cppflags_obst, '\0');
 294                 common_flags = obstack_finish(&cppflags_obst);
 295         }
 296
 297         assert(obstack_object_size(&cppflags_obst) == 0);
 298
 299         const char *preprocessor = getenv("CPARSER_PP");
 300         if (preprocessor != NULL) {
 301                 obstack_printf(&cppflags_obst, "%s ", preprocessor);
 302         } else {
 303                 if (target_triple != NULL)
 304                         obstack_printf(&cppflags_obst, "%s-", target_triple);
 305                 obstack_printf(&cppflags_obst, PREPROCESSOR);
 306         }
 307
 308         switch (filetype) {
 309         case FILETYPE_C:
 310                 add_flag(&cppflags_obst, "-std=c99");
 311                 break;
 312         case FILETYPE_CXX:
 313                 add_flag(&cppflags_obst, "-std=c++98");
 314                 break;
 315         case FILETYPE_ASSEMBLER:
 316                 add_flag(&cppflags_obst, "-x");
 317                 add_flag(&cppflags_obst, "assembler-with-cpp");
 318                 break;
 319         default:
 320                 break;
 321         }
 322         obstack_printf(&cppflags_obst, "%s", common_flags);
 323
 324         /* handle dependency generation */
 325         if (dep_target[0] != '\0') {
 326                 add_flag(&cppflags_obst, "-MF");
 327                 add_flag(&cppflags_obst, dep_target);
 328                 if (outname != NULL) {
 329                                 add_flag(&cppflags_obst, "-MQ");
 330                                 add_flag(&cppflags_obst, outname);
 331                 }
 332         }
 333         add_flag(&cppflags_obst, fname);
 334         obstack_1grow(&cppflags_obst, '\0');
 335
 336         char *commandline = obstack_finish(&cppflags_obst);
 337         if (verbose) {
 338                 puts(commandline);
 339         }
 340         FILE *f = popen(commandline, "r");
 341         if (f == NULL) {
 342                 fprintf(stderr, "invoking preprocessor failed\n");
 343                 exit(EXIT_FAILURE);
 344         }
 345         /* we don't really need that anymore */
 346         obstack_free(&cppflags_obst, commandline);
 347
 348         return f;
 349 }
 350
 351 static void assemble(const char *out, const char *in)
 352 {
 353         obstack_1grow(&asflags_obst, '\0');
 354         const char *flags = obstack_finish(&asflags_obst);
 355
 356         const char *assembler = getenv("CPARSER_AS");
 357         if (assembler != NULL) {
 358                 obstack_printf(&asflags_obst, "%s", assembler);
 359         } else {
 360                 if (target_triple != NULL)
 361                         obstack_printf(&asflags_obst, "%s-", target_triple);
 362                 obstack_printf(&asflags_obst, "%s", ASSEMBLER);
 363         }
 364         if (flags[0] != '\0')
 365                 obstack_printf(&asflags_obst, " %s", flags);
 366
 367         obstack_printf(&asflags_obst, " %s -o %s", in, out);
 368         obstack_1grow(&asflags_obst, '\0');
 369
 370         char *commandline = obstack_finish(&asflags_obst);
 371         if (verbose) {
 372                 puts(commandline);
 373         }
 374         int err = system(commandline);
 375         if (err != EXIT_SUCCESS) {
 376                 fprintf(stderr, "assembler reported an error\n");
 377                 exit(EXIT_FAILURE);
 378         }
 379         obstack_free(&asflags_obst, commandline);
 380 }
 381
 382 static void print_file_name(const char *file)
 383 {
 384         add_flag(&ldflags_obst, "-print-file-name=%s", file);
 385
 386         obstack_1grow(&ldflags_obst, '\0');
 387         const char *flags = obstack_finish(&ldflags_obst);
 388
 389         /* construct commandline */
 390         const char *linker = getenv("CPARSER_LINK");
 391         if (linker != NULL) {
 392                 obstack_printf(&ldflags_obst, "%s ", linker);
 393         } else {
 394                 if (target_triple != NULL)
 395                         obstack_printf(&ldflags_obst, "%s-", target_triple);
 396                 obstack_printf(&ldflags_obst, "%s ", LINKER);
 397         }
 398         obstack_printf(&ldflags_obst, "%s ", linker);
 399         obstack_printf(&ldflags_obst, "%s", flags);
 400         obstack_1grow(&ldflags_obst, '\0');
 401
 402         char *commandline = obstack_finish(&ldflags_obst);
 403         if (verbose) {
 404                 puts(commandline);
 405         }
 406         int err = system(commandline);
 407         if (err != EXIT_SUCCESS) {
 408                 fprintf(stderr, "linker reported an error\n");
 409                 exit(EXIT_FAILURE);
 410         }
 411         obstack_free(&ldflags_obst, commandline);
 412 }
 413
 414 static const char *try_dir(const char *dir)
 415 {
 416         if (dir == NULL)
 417                 return dir;
 418         if (access(dir, R_OK | W_OK | X_OK) == 0)
 419                 return dir;
 420         return NULL;
 421 }
 422
 423 static const char *get_tempdir(void)
 424 {
 425         static const char *tmpdir = NULL;
 426
 427         if (tmpdir != NULL)
 428                 return tmpdir;
 429
 430         if (tmpdir == NULL)
 431                 tmpdir = try_dir(getenv("TMPDIR"));
 432         if (tmpdir == NULL)
 433                 tmpdir = try_dir(getenv("TMP"));
 434         if (tmpdir == NULL)
 435                 tmpdir = try_dir(getenv("TEMP"));
 436
 437 #ifdef P_tmpdir
 438         if (tmpdir == NULL)
 439                 tmpdir = try_dir(P_tmpdir);
 440 #endif
 441
 442         if (tmpdir == NULL)
 443                 tmpdir = try_dir("/var/tmp");
 444         if (tmpdir == NULL)
 445                 tmpdir = try_dir("/usr/tmp");
 446         if (tmpdir == NULL)
 447                 tmpdir = try_dir("/tmp");
 448
 449         if (tmpdir == NULL)
 450                 tmpdir = ".";
 451
 452         return tmpdir;
 453 }
 454
 455 #ifndef HAVE_MKSTEMP
 456 /* cheap and nasty mkstemp replacement */
 457 static int mkstemp(char *templ)
 458 {
 459         mktemp(templ);
 460         return open(templ, O_RDWR|O_CREAT|O_EXCL|O_BINARY, 0600);
 461 }
 462 #endif
 463
 464 /**
 465  * an own version of tmpnam, which: writes in a buffer, emits no warnings
 466  * during linking (like glibc/gnu ld do for tmpnam)...
 467  */
 468 static FILE *make_temp_file(char *buffer, size_t buflen, const char *prefix)
 469 {
 470         const char *tempdir = get_tempdir();
 471
 472         snprintf(buffer, buflen, "%s/%sXXXXXX", tempdir, prefix);
 473
 474         int fd = mkstemp(buffer);
 475         if (fd == -1) {
 476                 fprintf(stderr, "couldn't create temporary file: %s\n",
 477                         strerror(errno));
 478                 exit(EXIT_FAILURE);
 479         }
 480         FILE *out = fdopen(fd, "w");
 481         if (out == NULL) {
 482                 fprintf(stderr, "couldn't create temporary file FILE*\n");
 483                 exit(EXIT_FAILURE);
 484         }
 485
 486         file_list_entry_t *entry = xmalloc(sizeof(*entry));
 487         memset(entry, 0, sizeof(*entry));
 488
 489         size_t  name_len = strlen(buffer) + 1;
 490         char   *name     = malloc(name_len);
 491         memcpy(name, buffer, name_len);
 492         entry->name      = name;
 493
 494         entry->next = temp_files;
 495         temp_files  = entry;
 496
 497         return out;
 498 }
 499
 500 static void free_temp_files(void)
 501 {
 502         file_list_entry_t *entry = temp_files;
 503         file_list_entry_t *next;
 504         for ( ; entry != NULL; entry = next) {
 505                 next = entry->next;
 506
 507                 unlink(entry->name);
 508                 free((char*) entry->name);
 509                 free(entry);
 510         }
 511         temp_files = NULL;
 512 }
 513
 514 typedef enum compile_mode_t {
 515         BenchmarkParser,
 516         PreprocessOnly,
 517         ParseOnly,
 518         Compile,
 519         CompileDump,
 520         CompileExportIR,
 521         CompileAssemble,
 522         CompileAssembleLink,
 523         LexTest,
 524         PrintAst,
 525         PrintFluffy,
 526         PrintJna
 527 } compile_mode_t;
 528
 529 static void usage(const char *argv0)
 530 {
 531         fprintf(stderr, "Usage %s [options] input [-o output]\n", argv0);
 532 }
 533
 534 static void print_cparser_version(void)
 535 {
 536         printf("cparser (%s) using libFirm (%u.%u",
 537                cparser_REVISION, ir_get_version_major(),
 538                ir_get_version_minor());
 539
 540         const char *revision = ir_get_version_revision();
 541         if (revision[0] != 0) {
 542                 putchar(' ');
 543                 fputs(revision, stdout);
 544         }
 545
 546         const char *build = ir_get_version_build();
 547         if (build[0] != 0) {
 548                 putchar(' ');
 549                 fputs(build, stdout);
 550         }
 551         puts(")");
 552         puts("This is free software; see the source for copying conditions.  There is NO\n"
 553              "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n");
 554 }
 555
 556 static void print_help_basic(const char *argv0)
 557 {
 558         usage(argv0);
 559         puts("");
 560         put_help("--help",                   "Display this information");
 561         put_help("--version",                "Display compiler version");
 562         put_help("--help-parser",            "Display information about parser options");
 563         put_help("--help-warnings",          "Display information about warning options");
 564         put_help("--help-codegen",           "Display information about code-generation options");
 565         put_help("--help-optimization",      "Display information about optimization options");
 566         put_help("--help-linker",            "Display information about linker options");
 567         put_help("--help-language-tools",    "Display information about language tools options");
 568         put_help("--help-debug",             "Display information about compiler debugging options");
 569         put_help("--help-firm",              "Display information about direct firm options");
 570         put_help("--help-all",               "Display information about all options");
 571         put_help("-c",                       "Compile and assemble but do not link");
 572         put_help("-E",                       "Preprocess only");
 573         put_help("-S",                       "Compile but do not assembler or link");
 574         put_help("-o",                       "Specify output file");
 575         put_help("-v",                       "Verbose output (show invocation of sub-processes)");
 576         put_help("-x",                       "Force input language:");
 577         put_choice("c",                      "C");
 578         put_choice("c++",                    "C++");
 579         put_choice("assembler",              "Assembler (no preprocessing)");
 580         put_choice("assembler-with-cpp",     "Assembler with preprocessing");
 581         put_choice("none",                   "Autodetection");
 582         put_help("-pipe",                    "ignored (gcc compatibility)");
 583 }
 584
 585 static void print_help_preprocessor(void)
 586 {
 587         put_help("-nostdinc",                "Do not search standard system include directories");
 588         put_help("-trigraphs",               "Support ISO C trigraphs");
 589         put_help("-isystem",                 "");
 590         put_help("-include",                 "");
 591         put_help("-I PATH",                  "");
 592         put_help("-D SYMBOL[=value]",        "");
 593         put_help("-U SYMBOL",                "");
 594         put_help("-Wp,OPTION",               "pass option directly to preprocessor");
 595         put_help("-M",                       "");
 596         put_help("-MD",                      "");
 597         put_help("-MMD",                     "");
 598         put_help("-MM",                      "");
 599         put_help("-MP",                      "");
 600         put_help("-MT",                      "");
 601         put_help("-MQ",                      "");
 602         put_help("-MF",                      "");
 603 }
 604
 605 static void print_help_parser(void)
 606 {
 607         put_help("-finput-charset=CHARSET",  "Select encoding of input files");
 608         put_help("-fmessage-length=LEN",     "ignored (gcc compatibility)");
 609         put_help("-fshort-wchar",            "wchar_t is unsigned short instead of int");
 610         put_help("-fshow-column",            "show the column number in diagnostic messages");
 611         put_help("-funsigned-char",          "char is an unsigned type");
 612         put_help("--ms",                     "Enable msvc extensions");
 613         put_help("--no-ms",                  "Disable msvc extensions");
 614         put_help("--gcc",                    "Enable gcc extensions");
 615         put_help("--no-gcc",                 "Disable gcc extensions");
 616         put_help("-std=STANDARD",            "Specify language standard:");
 617         put_choice("c99",                    "ISO C99 standard");
 618         put_choice("c89",                    "ISO C89 standard");
 619         put_choice("c9x",                    "deprecated");
 620         put_choice("c++",                    "ISO C++ 98");
 621         put_choice("c++98",                  "ISO C++ 98");
 622         put_choice("gnu99",                  "ISO C99 + GNU extensions (default)");
 623         put_choice("gnu89",                  "ISO C89 + GNU extensions");
 624         put_choice("gnu9x",                  "deprecated");
 625         put_choice("iso9899:1990",           "ISO C89");
 626         put_choice("iso9899:199409",         "ISO C90");
 627         put_choice("iso9899:1999",           "ISO C99");
 628         put_choice("iso9899:199x",           "deprecated");
 629         put_help("-pedantic",                "ignored (gcc compatibility)");
 630         put_help("-ansi",                    "ignored (gcc compatibility)");
 631         put_help("--strict",                 "Enable strict conformance checking");
 632 }
 633
 634 static void print_help_warnings(void)
 635 {
 636         put_help("-f[no-]diagnostics-show-option", "Show the switch, which controls a warning, after each warning");
 637         put_help("-w",                             "disable all warnings");
 638         put_help("-Wno-trigraphs",                 "warn if input contains trigraphs");
 639         put_help("-Wundef",                        "Warn if an undefined macro is used in an #if");
 640         print_warning_opt_help();
 641 }
 642
 643 static void print_help_optimization(void)
 644 {
 645         put_help("-O LEVEL",                 "select optimization level (0-4)");
 646         firm_option_help(put_help);
 647         put_help("-fexpensive-optimizations","ignored (gcc compatibility)");
 648 }
 649
 650 static void print_help_codegeneration(void)
 651 {
 652         put_help("-g",                       "Generate debug information");
 653         put_help("-pg",                      "Instrument code for gnu gprof");
 654         put_help("-fomit-frame-pointer",     "Produce code without frame pointer where possible");
 655         put_help("-ffreestanding",           "compile in freestanding mode (see ISO C standard)");
 656         put_help("-fhosted",                 "compile in hosted (not freestanding) mode");
 657         put_help("-fprofile-generate",       "Generate instrumented code to collect profile information");
 658         put_help("-fprofile-use",            "Use profile information generated by instrumented binaries");
 659         put_help("-ffp-precise",             "precise floating point model");
 660         put_help("-ffp-fast",                "imprecise floating point model");
 661         put_help("-ffp-strict",              "strict floating point model");
 662         put_help("-ffp-precise",             "precise floating point model");
 663         put_help("-pthread",                 "Use pthread threading library");
 664         put_help("-mtarget=TARGET",          "Specify target architecture as CPU-manufacturer-OS triple");
 665         put_help("-mtriple=TARGET",          "alias for -mtarget (clang compatibility)");
 666         put_help("-march=ARCH",              "");
 667         put_help("-mtune=ARCH",              "");
 668         put_help("-mcpu=CPU",                "");
 669         put_help("-mfpmath=",                "");
 670         put_help("-mpreferred-stack-boundary=", "");
 671         put_help("-mrtd",                    "");
 672         put_help("-mregparm=",               "not supported yet");
 673         put_help("-msoft-float",             "not supported yet");
 674         put_help("-m32",                     "generate 32bit code");
 675         put_help("-m64",                     "generate 64bit code");
 676         put_help("-fverbose-asm",            "ignored (gcc compatibility)");
 677         put_help("-fjump-tables",            "ignored (gcc compatibility)");
 678         put_help("-fcommon",                 "ignored (gcc compatibility)");
 679         put_help("-foptimize-sibling-calls", "ignored (gcc compatibility)");
 680         put_help("-falign-loops",            "ignored (gcc compatibility)");
 681         put_help("-falign-jumps",            "ignored (gcc compatibility)");
 682         put_help("-falign-functions",        "ignored (gcc compatibility)");
 683         put_help("-fPIC",                    "ignored (gcc compatibility)");
 684         put_help("-ffast-math",              "same as fp-fast (gcc compatibility)");
 685         puts("");
 686         puts("\tMost of these options can be used with a no- prefix to disable them");
 687         puts("\te.g. -fno-signed-char");
 688 }
 689
 690 static void print_help_linker(void)
 691 {
 692         put_help("-l LIBRARY",               "");
 693         put_help("-L PATH",                  "");
 694         put_help("-shared",                  "Produce a shared library");
 695         put_help("-static",                  "Produce statically linked binary");
 696         put_help("-Wl,OPTION",               "pass option directly to linker");
 697 }
 698
 699 static void print_help_debug(void)
 700 {
 701         put_help("--lextest",                "Preprocess and tokenize only");
 702         put_help("--print-ast",              "Preprocess, parse and print AST");
 703         put_help("--print-implicit-cast",    "");
 704         put_help("--print-parenthesis",      "");
 705         put_help("--benchmark",              "Preprocess and parse, produces no output");
 706         put_help("--time",                   "Measure time of compiler passes");
 707         put_help("--dump-function func",     "Preprocess, parse and output vcg graph of func");
 708         put_help("--export-ir",              "Preprocess, parse and output compiler intermediate representation");
 709 }
 710
 711 static void print_help_language_tools(void)
 712 {
 713         put_help("--print-fluffy",           "Preprocess, parse and generate declarations for the fluffy language");
 714         put_help("--print-jna",              "Preprocess, parse and generate declarations for JNA");
 715         put_help("--jna-limit filename",     "");
 716         put_help("--jna-libname name",       "");
 717 }
 718
 719 static void print_help_firm(void)
 720 {
 721         put_help("-bOPTION",                 "directly pass option to libFirm backend");
 722         int res = be_parse_arg("help");
 723         (void) res;
 724         assert(res);
 725 }
 726
 727 typedef enum {
 728         HELP_NONE          = 0,
 729         HELP_BASIC         = 1u << 0,
 730         HELP_PREPROCESSOR  = 1u << 1,
 731         HELP_PARSER        = 1u << 2,
 732         HELP_WARNINGS      = 1u << 3,
 733         HELP_OPTIMIZATION  = 1u << 4,
 734         HELP_CODEGEN       = 1u << 5,
 735         HELP_LINKER        = 1u << 6,
 736         HELP_LANGUAGETOOLS = 1u << 7,
 737         HELP_DEBUG         = 1u << 8,
 738         HELP_FIRM          = 1u << 9,
 739
 740         HELP_ALL           = (unsigned)-1
 741 } help_sections_t;
 742
 743 static void print_help(const char *argv0, help_sections_t sections)
 744 {
 745         if (sections & HELP_BASIC)         print_help_basic(argv0);
 746         if (sections & HELP_PREPROCESSOR)  print_help_preprocessor();
 747         if (sections & HELP_PARSER)        print_help_parser();
 748         if (sections & HELP_WARNINGS)      print_help_warnings();
 749         if (sections & HELP_OPTIMIZATION)  print_help_optimization();
 750         if (sections & HELP_CODEGEN)       print_help_codegeneration();
 751         if (sections & HELP_LINKER)        print_help_linker();
 752         if (sections & HELP_LANGUAGETOOLS) print_help_language_tools();
 753         if (sections & HELP_DEBUG)         print_help_debug();
 754         if (sections & HELP_FIRM)          print_help_firm();
 755 }
 756
 757 static void set_be_option(const char *arg)
 758 {
 759         int res = be_parse_arg(arg);
 760         (void) res;
 761         assert(res);
 762 }
 763
 764 static void copy_file(FILE *dest, FILE *input)
 765 {
 766         char buf[16384];
 767
 768         while (!feof(input) && !ferror(dest)) {
 769                 size_t read = fread(buf, 1, sizeof(buf), input);
 770                 if (fwrite(buf, 1, read, dest) != read) {
 771                         perror("couldn't write output");
 772                 }
 773         }
 774 }
 775
 776 static FILE *open_file(const char *filename)
 777 {
 778         if (streq(filename, "-")) {
 779                 return stdin;
 780         }
 781
 782         FILE *in = fopen(filename, "r");
 783         if (in == NULL) {
 784                 fprintf(stderr, "Couldn't open '%s': %s\n", filename,
 785                                 strerror(errno));
 786                 exit(EXIT_FAILURE);
 787         }
 788
 789         return in;
 790 }
 791
 792 static filetype_t get_filetype_from_string(const char *string)
 793 {
 794         if (streq(string, "c") || streq(string, "c-header"))
 795                 return FILETYPE_C;
 796         if (streq(string, "c++") || streq(string, "c++-header"))
 797                 return FILETYPE_CXX;
 798         if (streq(string, "assembler"))
 799                 return FILETYPE_PREPROCESSED_ASSEMBLER;
 800         if (streq(string, "assembler-with-cpp"))
 801                 return FILETYPE_ASSEMBLER;
 802         if (streq(string, "none"))
 803                 return FILETYPE_AUTODETECT;
 804
 805         return FILETYPE_UNKNOWN;
 806 }
 807
 808 static bool init_os_support(void)
 809 {
 810         const char *os = target_machine->operating_system;
 811         wchar_atomic_kind         = ATOMIC_TYPE_INT;
 812         enable_main_collect2_hack = false;
 813         define_intmax_types       = false;
 814
 815         if (strstr(os, "linux") != NULL || strstr(os, "bsd") != NULL
 816                         || streq(os, "solaris")) {
 817                 set_create_ld_ident(create_name_linux_elf);
 818         } else if (streq(os, "darwin")) {
 819                 long_double_size = 16;
 820                 set_create_ld_ident(create_name_macho);
 821                 define_intmax_types = true;
 822         } else if (strstr(os, "mingw") != NULL || streq(os, "win32")) {
 823                 wchar_atomic_kind         = ATOMIC_TYPE_USHORT;
 824                 enable_main_collect2_hack = true;
 825                 set_create_ld_ident(create_name_win32);
 826         } else {
 827                 return false;
 828         }
 829
 830         return true;
 831 }
 832
 833 static bool parse_target_triple(const char *arg)
 834 {
 835         machine_triple_t *triple = firm_parse_machine_triple(arg);
 836         if (triple == NULL) {
 837                 fprintf(stderr, "Target-triple is not in the form 'cpu_type-manufacturer-operating_system'\n");
 838                 return false;
 839         }
 840         target_machine = triple;
 841         return true;
 842 }
 843
 844 static void setup_target_machine(void)
 845 {
 846         if (!setup_firm_for_machine(target_machine))
 847                 exit(1);
 848
 849         const backend_params *be_params = be_get_backend_param();
 850         if (be_params->long_double_size % 8 != 0) {
 851                 fprintf(stderr, "firm-target long double size is not a multiple of 8, can't handle this\n");
 852                 exit(1);
 853         }
 854
 855         byte_order_big_endian = be_params->byte_order_big_endian;
 856         machine_size          = be_params->machine_size;
 857         long_double_size      = be_params->long_double_size / 8;
 858
 859         init_os_support();
 860 }
 861
 862 int main(int argc, char **argv)
 863 {
 864         firm_early_init();
 865
 866         const char        *dumpfunction         = NULL;
 867         const char        *print_file_name_file = NULL;
 868         compile_mode_t     mode                 = CompileAssembleLink;
 869         int                opt_level            = 1;
 870         int                result               = EXIT_SUCCESS;
 871         char               cpu_arch[16]         = "ia32";
 872         file_list_entry_t *files                = NULL;
 873         file_list_entry_t *last_file            = NULL;
 874         bool               construct_dep_target = false;
 875         bool               do_timing            = false;
 876         bool               profile_generate     = false;
 877         bool               profile_use          = false;
 878         struct obstack     file_obst;
 879
 880         atexit(free_temp_files);
 881
 882         /* hack for now... */
 883         if (strstr(argv[0], "pptest") != NULL) {
 884                 extern int pptest_main(int argc, char **argv);
 885                 return pptest_main(argc, argv);
 886         }
 887
 888         obstack_init(&cppflags_obst);
 889         obstack_init(&ldflags_obst);
 890         obstack_init(&asflags_obst);
 891         obstack_init(&file_obst);
 892
 893 #define GET_ARG_AFTER(def, args)                                             \
 894         do {                                                                     \
 895         def = &arg[sizeof(args)-1];                                              \
 896         if (def[0] == '\0') {                                                    \
 897                 ++i;                                                                 \
 898                 if (i >= argc) {                                                     \
 899                         fprintf(stderr, "error: expected argument after '" args "'\n");  \
 900                         argument_errors = true;                                          \
 901                         break;                                                           \
 902                 }                                                                    \
 903                 def = argv[i];                                                       \
 904                 if (def[0] == '-' && def[1] != '\0') {                               \
 905                         fprintf(stderr, "error: expected argument after '" args "'\n");  \
 906                         argument_errors = true;                                          \
 907                         continue;                                                        \
 908                 }                                                                    \
 909         }                                                                        \
 910         } while (0)
 911
 912 #define SINGLE_OPTION(ch) (option[0] == (ch) && option[1] == '\0')
 913
 914         /* early options parsing (find out optimization level and OS) */
 915         for (int i = 1; i < argc; ++i) {
 916                 const char *arg = argv[i];
 917                 if (arg[0] != '-')
 918                         continue;
 919
 920                 const char *option = &arg[1];
 921                 if (option[0] == 'O') {
 922                         sscanf(&option[1], "%d", &opt_level);
 923                 }
 924         }
 925
 926         const char *target = getenv("TARGET");
 927         if (target != NULL)
 928                 parse_target_triple(target);
 929         if (target_machine == NULL) {
 930                 target_machine = firm_get_host_machine();
 931         }
 932         choose_optimization_pack(opt_level);
 933         setup_target_machine();
 934
 935         /* parse rest of options */
 936                         standard        = STANDARD_DEFAULT;
 937         unsigned        features_on     = 0;
 938         unsigned        features_off    = 0;
 939         filetype_t      forced_filetype = FILETYPE_AUTODETECT;
 940         help_sections_t help            = HELP_NONE;
 941         bool            argument_errors = false;
 942         for (int i = 1; i < argc; ++i) {
 943                 const char *arg = argv[i];
 944                 if (arg[0] == '-' && arg[1] != '\0') {
 945                         /* an option */
 946                         const char *option = &arg[1];
 947                         if (option[0] == 'o') {
 948                                 GET_ARG_AFTER(outname, "-o");
 949                         } else if (option[0] == 'g') {
 950                                 set_be_option("debuginfo=stabs");
 951                                 set_be_option("omitfp=no");
 952                                 set_be_option("ia32-nooptcc=yes");
 953                         } else if (SINGLE_OPTION('c')) {
 954                                 mode = CompileAssemble;
 955                         } else if (SINGLE_OPTION('E')) {
 956                                 mode = PreprocessOnly;
 957                         } else if (SINGLE_OPTION('S')) {
 958                                 mode = Compile;
 959                         } else if (option[0] == 'O') {
 960                                 continue;
 961                         } else if (option[0] == 'I') {
 962                                 const char *opt;
 963                                 GET_ARG_AFTER(opt, "-I");
 964                                 add_flag(&cppflags_obst, "-I%s", opt);
 965                         } else if (option[0] == 'D') {
 966                                 const char *opt;
 967                                 GET_ARG_AFTER(opt, "-D");
 968                                 add_flag(&cppflags_obst, "-D%s", opt);
 969                         } else if (option[0] == 'U') {
 970                                 const char *opt;
 971                                 GET_ARG_AFTER(opt, "-U");
 972                                 add_flag(&cppflags_obst, "-U%s", opt);
 973                         } else if (option[0] == 'l') {
 974                                 const char *opt;
 975                                 GET_ARG_AFTER(opt, "-l");
 976                                 add_flag(&ldflags_obst, "-l%s", opt);
 977                         } else if (option[0] == 'L') {
 978                                 const char *opt;
 979                                 GET_ARG_AFTER(opt, "-L");
 980                                 add_flag(&ldflags_obst, "-L%s", opt);
 981                         } else if (SINGLE_OPTION('v')) {
 982                                 verbose = 1;
 983                         } else if (SINGLE_OPTION('w')) {
 984                                 disable_all_warnings();
 985                         } else if (option[0] == 'x') {
 986                                 const char *opt;
 987                                 GET_ARG_AFTER(opt, "-x");
 988                                 forced_filetype = get_filetype_from_string(opt);
 989                                 if (forced_filetype == FILETYPE_UNKNOWN) {
 990                                         fprintf(stderr, "Unknown language '%s'\n", opt);
 991                                         argument_errors = true;
 992                                 }
 993                         } else if (streq(option, "M")) {
 994                                 mode = PreprocessOnly;
 995                                 add_flag(&cppflags_obst, "-M");
 996                         } else if (streq(option, "MMD") ||
 997                                    streq(option, "MD")) {
 998                             construct_dep_target = true;
 999                                 add_flag(&cppflags_obst, "-%s", option);
1000                         } else if (streq(option, "MM")  ||
1001                                    streq(option, "MP")) {
1002                                 add_flag(&cppflags_obst, "-%s", option);
1003                         } else if (streq(option, "MT") ||
1004                                    streq(option, "MQ") ||
1005                                    streq(option, "MF")) {
1006                                 const char *opt;
1007                                 GET_ARG_AFTER(opt, "-MT");
1008                                 add_flag(&cppflags_obst, "-%s", option);
1009                                 add_flag(&cppflags_obst, "%s", opt);
1010                         } else if (streq(option, "include")) {
1011                                 const char *opt;
1012                                 GET_ARG_AFTER(opt, "-include");
1013                                 add_flag(&cppflags_obst, "-include");
1014                                 add_flag(&cppflags_obst, "%s", opt);
1015                         } else if (streq(option, "isystem")) {
1016                                 const char *opt;
1017                                 GET_ARG_AFTER(opt, "-isystem");
1018                                 add_flag(&cppflags_obst, "-isystem");
1019                                 add_flag(&cppflags_obst, "%s", opt);
1020 #if defined(linux) || defined(__linux) || defined(__linux__) || defined(__CYGWIN__)
1021                         } else if (streq(option, "pthread")) {
1022                                 /* set flags for the preprocessor */
1023                                 add_flag(&cppflags_obst, "-D_REENTRANT");
1024                                 /* set flags for the linker */
1025                                 add_flag(&ldflags_obst, "-lpthread");
1026 #endif
1027                         } else if (streq(option, "nostdinc")
1028                                         || streq(option, "trigraphs")) {
1029                                 /* pass these through to the preprocessor */
1030                                 add_flag(&cppflags_obst, "%s", arg);
1031                         } else if (streq(option, "pipe")) {
1032                                 /* here for gcc compatibility */
1033                         } else if (streq(option, "static")) {
1034                                 add_flag(&ldflags_obst, "-static");
1035                         } else if (streq(option, "shared")) {
1036                                 add_flag(&ldflags_obst, "-shared");
1037                         } else if (option[0] == 'f') {
1038                                 char const *orig_opt;
1039                                 GET_ARG_AFTER(orig_opt, "-f");
1040
1041                                 if (strstart(orig_opt, "input-charset=")) {
1042                                         char const* const encoding = strchr(orig_opt, '=') + 1;
1043                                         select_input_encoding(encoding);
1044                                 } else if (strstart(orig_opt, "align-loops=") ||
1045                                            strstart(orig_opt, "align-jumps=") ||
1046                                            strstart(orig_opt, "align-functions=")) {
1047                                         fprintf(stderr, "ignoring gcc option '-f%s'\n", orig_opt);
1048                                 } else if (strstart(orig_opt, "visibility=")) {
1049                                         const char *val = strchr(orig_opt, '=')+1;
1050                                         elf_visibility_tag_t visibility
1051                                                 = get_elf_visibility_from_string(val);
1052                                         if (visibility == ELF_VISIBILITY_ERROR) {
1053                                                 fprintf(stderr, "invalid visibility '%s' specified\n",
1054                                                         val);
1055                                                 argument_errors = true;
1056                                         } else {
1057                                                 set_default_visibility(visibility);
1058                                         }
1059                                 } else if (strstart(orig_opt, "message-length=")) {
1060                                         /* ignore: would only affect error message format */
1061                                 } else {
1062                                         /* -f options which have an -fno- variant */
1063                                         char const *opt         = orig_opt;
1064                                         bool        truth_value = true;
1065                                         if (opt[0] == 'n' && opt[1] == 'o' && opt[2] == '-') {
1066                                                 truth_value = false;
1067                                                 opt += 3;
1068                                         }
1069
1070                                         if (streq(opt, "builtins")) {
1071                                                 use_builtins = truth_value;
1072                                         } else if (streq(opt, "diagnostics-show-option")) {
1073                                                 diagnostics_show_option = truth_value;
1074                                         } else if (streq(opt, "dollars-in-identifiers")) {
1075                                                 allow_dollar_in_symbol = truth_value;
1076                                         } else if (streq(opt, "omit-frame-pointer")) {
1077                                                 set_be_option(truth_value ? "omitfp" : "omitfp=no");
1078                                         } else if (streq(opt, "short-wchar")) {
1079                                                 wchar_atomic_kind = truth_value ? ATOMIC_TYPE_USHORT
1080                                                         : ATOMIC_TYPE_INT;
1081                                         } else if (streq(opt, "show-column")) {
1082                                                 show_column = truth_value;
1083                                         } else if (streq(opt, "signed-char")) {
1084                                                 char_is_signed = truth_value;
1085                                         } else if (streq(opt, "strength-reduce")) {
1086                                                 /* does nothing, for gcc compatibility (even gcc does
1087                                                  * nothing for this switch anymore) */
1088                                         } else if (streq(opt, "syntax-only")) {
1089                                                 mode = truth_value ? ParseOnly : CompileAssembleLink;
1090                                         } else if (streq(opt, "unsigned-char")) {
1091                                                 char_is_signed = !truth_value;
1092                                         } else if (streq(opt, "freestanding")) {
1093                                                 freestanding = truth_value;
1094                                         } else if (streq(opt, "hosted")) {
1095                                                 freestanding = !truth_value;
1096                                         } else if (streq(opt, "profile-generate")) {
1097                                                 profile_generate = truth_value;
1098                                         } else if (streq(opt, "profile-use")) {
1099                                                 profile_use = truth_value;
1100                                         } else if (!truth_value &&
1101                                                    streq(opt, "asynchronous-unwind-tables")) {
1102                                             /* nothing todo, a gcc feature which we don't support
1103                                              * anyway was deactivated */
1104                                         } else if (streq(opt, "verbose-asm")) {
1105                                                 /* ignore: we always print verbose assembler */
1106                                         } else if (streq(opt, "fast-math") || streq(opt, "fp-fast")) {
1107                                                 firm_fp_model = fp_model_fast;
1108                                         } else if (streq(opt, "fp-precise")) {
1109                                                 firm_fp_model = fp_model_precise;
1110                                         } else if (streq(opt, "fp-strict")) {
1111                                                 firm_fp_model = fp_model_strict;
1112                                         } else if (streq(opt, "jump-tables")             ||
1113                                                    streq(opt, "expensive-optimizations") ||
1114                                                    streq(opt, "common")                  ||
1115                                                    streq(opt, "optimize-sibling-calls")  ||
1116                                                    streq(opt, "align-loops")             ||
1117                                                    streq(opt, "align-jumps")             ||
1118                                                    streq(opt, "align-functions")         ||
1119                                                    streq(opt, "PIC")) {
1120                                                 fprintf(stderr, "ignoring gcc option '-f%s'\n", orig_opt);
1121                                         } else if (streq(opt, "help")) {
1122                                                 fprintf(stderr, "warning: -fhelp is deprecated\n");
1123                                                 help |= HELP_OPTIMIZATION;
1124                                         } else {
1125                                                 int res = firm_option(orig_opt);
1126                                                 if (res == 0) {
1127                                                         fprintf(stderr, "error: unknown Firm option '-f%s'\n",
1128                                                                 orig_opt);
1129                                                         argument_errors = true;
1130                                                         continue;
1131                                                 }
1132                                         }
1133                                 }
1134                         } else if (option[0] == 'b') {
1135                                 const char *opt;
1136                                 GET_ARG_AFTER(opt, "-b");
1137
1138                                 if (streq(opt, "help")) {
1139                                         fprintf(stderr, "warning: -bhelp is deprecated (use --help-firm)\n");
1140                                         help |= HELP_FIRM;
1141                                 } else {
1142                                         int res = be_parse_arg(opt);
1143                                         if (res == 0) {
1144                                                 fprintf(stderr, "error: unknown Firm backend option '-b %s'\n",
1145                                                                 opt);
1146                                                 argument_errors = true;
1147                                         } else if (strstart(opt, "isa=")) {
1148                                                 strncpy(cpu_arch, opt, sizeof(cpu_arch));
1149                                         }
1150                                 }
1151                         } else if (option[0] == 'W') {
1152                                 if (strstart(option + 1, "p,")) {
1153                                         // pass options directly to the preprocessor
1154                                         const char *opt;
1155                                         GET_ARG_AFTER(opt, "-Wp,");
1156                                         add_flag(&cppflags_obst, "-Wp,%s", opt);
1157                                 } else if (strstart(option + 1, "l,")) {
1158                                         // pass options directly to the linker
1159                                         const char *opt;
1160                                         GET_ARG_AFTER(opt, "-Wl,");
1161                                         add_flag(&ldflags_obst, "-Wl,%s", opt);
1162                                 } else if (streq(option + 1, "no-trigraphs")
1163                                                         || streq(option + 1, "undef")) {
1164                                         add_flag(&cppflags_obst, "%s", arg);
1165                                 } else {
1166                                         set_warning_opt(&option[1]);
1167                                 }
1168                         } else if (option[0] == 'm') {
1169                                 /* -m options */
1170                                 const char *opt;
1171                                 char arch_opt[64];
1172
1173                                 GET_ARG_AFTER(opt, "-m");
1174                                 if (strstart(opt, "target=")) {
1175                                         GET_ARG_AFTER(opt, "-mtarget=");
1176                                         if (!parse_target_triple(opt)) {
1177                                                 argument_errors = true;
1178                                         } else {
1179                                                 setup_target_machine();
1180                                                 target_triple = opt;
1181                                         }
1182                                 } else if (strstart(opt, "triple=")) {
1183                                         GET_ARG_AFTER(opt, "-mtriple=");
1184                                         if (!parse_target_triple(opt)) {
1185                                                 argument_errors = true;
1186                                         } else {
1187                                                 setup_target_machine();
1188                                                 target_triple = opt;
1189                                         }
1190                                 } else if (strstart(opt, "arch=")) {
1191                                         GET_ARG_AFTER(opt, "-march=");
1192                                         snprintf(arch_opt, sizeof(arch_opt), "%s-arch=%s", cpu_arch, opt);
1193                                         int res = be_parse_arg(arch_opt);
1194                                         snprintf(arch_opt, sizeof(arch_opt), "%s-opt=%s", cpu_arch, opt);
1195                                         res &= be_parse_arg(arch_opt);
1196
1197                                         if (res == 0) {
1198                                                 fprintf(stderr, "Unknown architecture '%s'\n", arch_opt);
1199                                                 argument_errors = true;
1200                                         }
1201                                 } else if (strstart(opt, "tune=")) {
1202                                         GET_ARG_AFTER(opt, "-mtune=");
1203                                         snprintf(arch_opt, sizeof(arch_opt), "%s-opt=%s", cpu_arch, opt);
1204                                         int res = be_parse_arg(arch_opt);
1205                                         if (res == 0)
1206                                                 argument_errors = true;
1207                                 } else if (strstart(opt, "cpu=")) {
1208                                         GET_ARG_AFTER(opt, "-mcpu=");
1209                                         snprintf(arch_opt, sizeof(arch_opt), "%s-arch=%s", cpu_arch, opt);
1210                                         int res = be_parse_arg(arch_opt);
1211                                         if (res == 0)
1212                                                 argument_errors = true;
1213                                 } else if (strstart(opt, "fpmath=")) {
1214                                         GET_ARG_AFTER(opt, "-mfpmath=");
1215                                         if (streq(opt, "387"))
1216                                                 opt = "x87";
1217                                         else if (streq(opt, "sse"))
1218                                                 opt = "sse2";
1219                                         else {
1220                                                 fprintf(stderr, "error: option -mfpumath supports only 387 or sse\n");
1221                                                 argument_errors = true;
1222                                         }
1223                                         if (!argument_errors) {
1224                                                 snprintf(arch_opt, sizeof(arch_opt), "%s-fpunit=%s", cpu_arch, opt);
1225                                                 int res = be_parse_arg(arch_opt);
1226                                                 if (res == 0)
1227                                                         argument_errors = true;
1228                                         }
1229                                 } else if (strstart(opt, "preferred-stack-boundary=")) {
1230                                         GET_ARG_AFTER(opt, "-mpreferred-stack-boundary=");
1231                                         snprintf(arch_opt, sizeof(arch_opt), "%s-stackalign=%s", cpu_arch, opt);
1232                                         int res = be_parse_arg(arch_opt);
1233                                         if (res == 0)
1234                                                 argument_errors = true;
1235                                 } else if (streq(opt, "rtd")) {
1236                                         default_calling_convention = CC_STDCALL;
1237                                 } else if (strstart(opt, "regparm=")) {
1238                                         fprintf(stderr, "error: regparm convention not supported yet\n");
1239                                         argument_errors = true;
1240                                 } else if (streq(opt, "soft-float")) {
1241                                         fprintf(stderr, "error: software floatingpoint not supported yet\n");
1242                                         argument_errors = true;
1243                                 } else {
1244                                         long int value = strtol(opt, NULL, 10);
1245                                         if (value == 0) {
1246                                                 fprintf(stderr, "error: wrong option '-m %s'\n",  opt);
1247                                                 argument_errors = true;
1248                                         } else if (value != 16 && value != 32 && value != 64) {
1249                                                 fprintf(stderr, "error: option -m supports only 16, 32 or 64\n");
1250                                                 argument_errors = true;
1251                                         } else {
1252                                                 add_flag(&cppflags_obst, "-m%u", machine_size);
1253                                                 add_flag(&asflags_obst, "-m%u", machine_size);
1254                                                 add_flag(&ldflags_obst, "-m%u", machine_size);
1255                                                 /* TODO: choose/change backend based on this */
1256                                         }
1257                                 }
1258                         } else if (streq(option, "pg")) {
1259                                 set_be_option("gprof");
1260                                 add_flag(&ldflags_obst, "-pg");
1261                         } else if (streq(option, "pedantic") ||
1262                                    streq(option, "ansi")) {
1263                                 fprintf(stderr, "warning: ignoring gcc option '%s'\n", arg);
1264                         } else if (strstart(option, "std=")) {
1265                                 const char *const o = &option[4];
1266                                 standard =
1267                                         streq(o, "c++")            ? STANDARD_CXX98   :
1268                                         streq(o, "c++98")          ? STANDARD_CXX98   :
1269                                         streq(o, "c89")            ? STANDARD_C89     :
1270                                         streq(o, "c99")            ? STANDARD_C99     :
1271                                         streq(o, "c9x")            ? STANDARD_C99     : // deprecated
1272                                         streq(o, "gnu++98")        ? STANDARD_GNUXX98 :
1273                                         streq(o, "gnu89")          ? STANDARD_GNU89   :
1274                                         streq(o, "gnu99")          ? STANDARD_GNU99   :
1275                                         streq(o, "gnu9x")          ? STANDARD_GNU99   : // deprecated
1276                                         streq(o, "iso9899:1990")   ? STANDARD_C89     :
1277                                         streq(o, "iso9899:199409") ? STANDARD_C90     :
1278                                         streq(o, "iso9899:1999")   ? STANDARD_C99     :
1279                                         streq(o, "iso9899:199x")   ? STANDARD_C99     : // deprecated
1280                                         (fprintf(stderr, "warning: ignoring gcc option '%s'\n", arg), standard);
1281                         } else if (streq(option, "version")) {
1282                                 print_cparser_version();
1283                         } else if (strstart(option, "print-file-name=")) {
1284                                 GET_ARG_AFTER(print_file_name_file, "-print-file-name=");
1285                         } else if (option[0] == '-') {
1286                                 /* double dash option */
1287                                 ++option;
1288                                 if (streq(option, "gcc")) {
1289                                         features_on  |=  _GNUC;
1290                                         features_off &= ~_GNUC;
1291                                 } else if (streq(option, "no-gcc")) {
1292                                         features_on  &= ~_GNUC;
1293                                         features_off |=  _GNUC;
1294                                 } else if (streq(option, "ms")) {
1295                                         features_on  |=  _MS;
1296                                         features_off &= ~_MS;
1297                                 } else if (streq(option, "no-ms")) {
1298                                         features_on  &= ~_MS;
1299                                         features_off |=  _MS;
1300                                 } else if (streq(option, "strict")) {
1301                                         strict_mode = true;
1302                                 } else if (streq(option, "lextest")) {
1303                                         mode = LexTest;
1304                                 } else if (streq(option, "benchmark")) {
1305                                         mode = BenchmarkParser;
1306                                 } else if (streq(option, "print-ast")) {
1307                                         mode = PrintAst;
1308                                 } else if (streq(option, "print-implicit-cast")) {
1309                                         print_implicit_casts = true;
1310                                 } else if (streq(option, "print-parenthesis")) {
1311                                         print_parenthesis = true;
1312                                 } else if (streq(option, "print-fluffy")) {
1313                                         mode = PrintFluffy;
1314                                 } else if (streq(option, "print-jna")) {
1315                                         mode = PrintJna;
1316                                 } else if (streq(option, "jna-limit")) {
1317                                         ++i;
1318                                         if (i >= argc) {
1319                                                 fprintf(stderr, "error: "
1320                                                         "expected argument after '--jna-limit'\n");
1321                                                 argument_errors = true;
1322                                                 break;
1323                                         }
1324                                         jna_limit_output(argv[i]);
1325                                 } else if (streq(option, "jna-libname")) {
1326                                         ++i;
1327                                         if (i >= argc) {
1328                                                 fprintf(stderr, "error: "
1329                                                         "expected argument after '--jna-libname'\n");
1330                                                 argument_errors = true;
1331                                                 break;
1332                                         }
1333                                         jna_set_libname(argv[i]);
1334                                 } else if (streq(option, "time")) {
1335                                         do_timing = true;
1336                                 } else if (streq(option, "version")) {
1337                                         print_cparser_version();
1338                                         return EXIT_SUCCESS;
1339                                 } else if (streq(option, "help")) {
1340                                         help |= HELP_BASIC;
1341                                 } else if (streq(option, "help-parser")) {
1342                                         help |= HELP_PARSER;
1343                                 } else if (streq(option, "help-warnings")) {
1344                                         help |= HELP_WARNINGS;
1345                                 } else if (streq(option, "help-codegen")) {
1346                                         help |= HELP_CODEGEN;
1347                                 } else if (streq(option, "help-linker")) {
1348                                         help |= HELP_LINKER;
1349                                 } else if (streq(option, "help-optimization")) {
1350                                         help |= HELP_OPTIMIZATION;
1351                                 } else if (streq(option, "help-language-tools")) {
1352                                         help |= HELP_LANGUAGETOOLS;
1353                                 } else if (streq(option, "help-debug")) {
1354                                         help |= HELP_DEBUG;
1355                                 } else if (streq(option, "help-firm")) {
1356                                         help |= HELP_FIRM;
1357                                 } else if (streq(option, "help-all")) {
1358                                         help |= HELP_ALL;
1359                                 } else if (streq(option, "dump-function")) {
1360                                         ++i;
1361                                         if (i >= argc) {
1362                                                 fprintf(stderr, "error: "
1363                                                         "expected argument after '--dump-function'\n");
1364                                                 argument_errors = true;
1365                                                 break;
1366                                         }
1367                                         dumpfunction = argv[i];
1368                                         mode         = CompileDump;
1369                                 } else if (streq(option, "export-ir")) {
1370                                         mode = CompileExportIR;
1371                                 } else {
1372                                         fprintf(stderr, "error: unknown argument '%s'\n", arg);
1373                                         argument_errors = true;
1374                                 }
1375                         } else {
1376                                 fprintf(stderr, "error: unknown argument '%s'\n", arg);
1377                                 argument_errors = true;
1378                         }
1379                 } else {
1380                         filetype_t type = forced_filetype;
1381                         if (type == FILETYPE_AUTODETECT) {
1382                                 if (streq(arg, "-")) {
1383                                         /* - implicitly means C source file */
1384                                         type = FILETYPE_C;
1385                                 } else {
1386                                         const char *suffix = strrchr(arg, '.');
1387                                         /* Ensure there is at least one char before the suffix */
1388                                         if (suffix != NULL && suffix != arg) {
1389                                                 ++suffix;
1390                                                 type =
1391                                                         streq(suffix, "S")   ? FILETYPE_ASSEMBLER              :
1392                                                         streq(suffix, "a")   ? FILETYPE_OBJECT                 :
1393                                                         streq(suffix, "c")   ? FILETYPE_C                      :
1394                                                         streq(suffix, "i")   ? FILETYPE_PREPROCESSED_C         :
1395                                                         streq(suffix, "C")   ? FILETYPE_CXX                    :
1396                                                         streq(suffix, "cc")  ? FILETYPE_CXX                    :
1397                                                         streq(suffix, "cp")  ? FILETYPE_CXX                    :
1398                                                         streq(suffix, "cpp") ? FILETYPE_CXX                    :
1399                                                         streq(suffix, "CPP") ? FILETYPE_CXX                    :
1400                                                         streq(suffix, "cxx") ? FILETYPE_CXX                    :
1401                                                         streq(suffix, "c++") ? FILETYPE_CXX                    :
1402                                                         streq(suffix, "ii")  ? FILETYPE_PREPROCESSED_CXX       :
1403                                                         streq(suffix, "h")   ? FILETYPE_C                      :
1404                                                         streq(suffix, "ir")  ? FILETYPE_IR                     :
1405                                                         streq(suffix, "o")   ? FILETYPE_OBJECT                 :
1406                                                         streq(suffix, "s")   ? FILETYPE_PREPROCESSED_ASSEMBLER :
1407                                                         streq(suffix, "so")  ? FILETYPE_OBJECT                 :
1408                                                         FILETYPE_OBJECT; /* gcc behavior: unknown file extension means object file */
1409                                         }
1410                                 }
1411                         }
1412
1413                         file_list_entry_t *entry
1414                                 = obstack_alloc(&file_obst, sizeof(entry[0]));
1415                         memset(entry, 0, sizeof(entry[0]));
1416                         entry->name = arg;
1417                         entry->type = type;
1418
1419                         if (last_file != NULL) {
1420                                 last_file->next = entry;
1421                         } else {
1422                                 files = entry;
1423                         }
1424                         last_file = entry;
1425                 }
1426         }
1427
1428         if (help != HELP_NONE) {
1429                 print_help(argv[0], help);
1430                 return !argument_errors;
1431         }
1432
1433         if (print_file_name_file != NULL) {
1434                 print_file_name(print_file_name_file);
1435                 return EXIT_SUCCESS;
1436         }
1437         if (files == NULL) {
1438                 fprintf(stderr, "error: no input files specified\n");
1439                 argument_errors = true;
1440         }
1441
1442         if (argument_errors) {
1443                 usage(argv[0]);
1444                 return EXIT_FAILURE;
1445         }
1446
1447         /* apply some effects from switches */
1448         c_mode |= features_on;
1449         c_mode &= ~features_off;
1450         if (profile_generate) {
1451                 add_flag(&ldflags_obst, "-lfirmprof");
1452                 set_be_option("profilegenerate");
1453         }
1454         if (profile_use) {
1455                 set_be_option("profileuse");
1456         }
1457
1458         gen_firm_init();
1459         init_symbol_table();
1460         init_types();
1461         init_typehash();
1462         init_basic_types();
1463         init_lexer();
1464         init_ast();
1465         init_parser();
1466         init_ast2firm();
1467         init_mangle();
1468
1469         if (do_timing)
1470                 timer_init();
1471
1472         if (construct_dep_target) {
1473                 if (outname != 0 && strlen(outname) >= 2) {
1474                         get_output_name(dep_target, sizeof(dep_target), outname, ".d");
1475                 } else {
1476                         get_output_name(dep_target, sizeof(dep_target), files->name, ".d");
1477                 }
1478         } else {
1479                 dep_target[0] = '\0';
1480         }
1481
1482         char outnamebuf[4096];
1483         if (outname == NULL) {
1484                 const char *filename = files->name;
1485
1486                 switch(mode) {
1487                 case BenchmarkParser:
1488                 case PrintAst:
1489                 case PrintFluffy:
1490                 case PrintJna:
1491                 case LexTest:
1492                 case PreprocessOnly:
1493                 case ParseOnly:
1494                         outname = "-";
1495                         break;
1496                 case Compile:
1497                         get_output_name(outnamebuf, sizeof(outnamebuf), filename, ".s");
1498                         outname = outnamebuf;
1499                         break;
1500                 case CompileAssemble:
1501                         get_output_name(outnamebuf, sizeof(outnamebuf), filename, ".o");
1502                         outname = outnamebuf;
1503                         break;
1504                 case CompileDump:
1505                         get_output_name(outnamebuf, sizeof(outnamebuf), dumpfunction,
1506                                         ".vcg");
1507                         outname = outnamebuf;
1508                         break;
1509                 case CompileExportIR:
1510                         get_output_name(outnamebuf, sizeof(outnamebuf), filename, ".ir");
1511                         outname = outnamebuf;
1512                         break;
1513                 case CompileAssembleLink:
1514 #ifdef _WIN32
1515                         outname = "a.exe";
1516 #else
1517                         outname = "a.out";
1518 #endif
1519                         break;
1520                 }
1521         }
1522
1523         assert(outname != NULL);
1524
1525         FILE *out;
1526         if (streq(outname, "-")) {
1527                 out = stdout;
1528         } else {
1529                 out = fopen(outname, "w");
1530                 if (out == NULL) {
1531                         fprintf(stderr, "Couldn't open '%s' for writing: %s\n", outname,
1532                                         strerror(errno));
1533                         return EXIT_FAILURE;
1534                 }
1535         }
1536
1537         file_list_entry_t *file;
1538         bool               already_constructed_firm = false;
1539         for (file = files; file != NULL; file = file->next) {
1540                 char        asm_tempfile[1024];
1541                 const char *filename = file->name;
1542                 filetype_t  filetype = file->type;
1543
1544                 if (filetype == FILETYPE_OBJECT)
1545                         continue;
1546
1547                 FILE *in = NULL;
1548                 if (mode == LexTest) {
1549                         if (in == NULL)
1550                                 in = open_file(filename);
1551                         lextest(in, filename);
1552                         fclose(in);
1553                         return EXIT_SUCCESS;
1554                 }
1555
1556                 FILE *preprocessed_in = NULL;
1557                 filetype_t next_filetype = filetype;
1558                 switch (filetype) {
1559                         case FILETYPE_C:
1560                                 next_filetype = FILETYPE_PREPROCESSED_C;
1561                                 goto preprocess;
1562                         case FILETYPE_CXX:
1563                                 next_filetype = FILETYPE_PREPROCESSED_CXX;
1564                                 goto preprocess;
1565                         case FILETYPE_ASSEMBLER:
1566                                 next_filetype = FILETYPE_PREPROCESSED_ASSEMBLER;
1567                                 goto preprocess;
1568 preprocess:
1569                                 /* no support for input on FILE* yet */
1570                                 if (in != NULL)
1571                                         panic("internal compiler error: in for preprocessor != NULL");
1572
1573                                 preprocessed_in = preprocess(filename, filetype);
1574                                 if (mode == PreprocessOnly) {
1575                                         copy_file(out, preprocessed_in);
1576                                         int pp_result = pclose(preprocessed_in);
1577                                         fclose(out);
1578                                         /* remove output file in case of error */
1579                                         if (out != stdout && pp_result != EXIT_SUCCESS) {
1580                                                 unlink(outname);
1581                                         }
1582                                         return pp_result;
1583                                 }
1584
1585                                 in = preprocessed_in;
1586                                 filetype = next_filetype;
1587                                 break;
1588
1589                         default:
1590                                 break;
1591                 }
1592
1593                 FILE *asm_out;
1594                 if (mode == Compile) {
1595                         asm_out = out;
1596                 } else {
1597                         asm_out = make_temp_file(asm_tempfile, sizeof(asm_tempfile), "ccs");
1598                 }
1599
1600                 if (in == NULL)
1601                         in = open_file(filename);
1602
1603                 /* preprocess and compile */
1604                 if (filetype == FILETYPE_PREPROCESSED_C) {
1605                         char const* invalid_mode;
1606                         switch (standard) {
1607                                 case STANDARD_ANSI:
1608                                 case STANDARD_C89:   c_mode = _C89;                break;
1609                                 /* TODO determine difference between these two */
1610                                 case STANDARD_C90:   c_mode = _C89;                break;
1611                                 case STANDARD_C99:   c_mode = _C89 | _C99;         break;
1612                                 case STANDARD_GNU89: c_mode = _C89 |        _GNUC; break;
1613
1614 default_c_warn:
1615                                         fprintf(stderr,
1616                                                         "warning: command line option \"-std=%s\" is not valid for C\n",
1617                                                         invalid_mode);
1618                                         /* FALLTHROUGH */
1619                                 case STANDARD_DEFAULT:
1620                                 case STANDARD_GNU99:   c_mode = _C89 | _C99 | _GNUC; break;
1621
1622                                 case STANDARD_CXX98:   invalid_mode = "c++98"; goto default_c_warn;
1623                                 case STANDARD_GNUXX98: invalid_mode = "gnu98"; goto default_c_warn;
1624                         }
1625                         goto do_parsing;
1626                 } else if (filetype == FILETYPE_PREPROCESSED_CXX) {
1627                         char const* invalid_mode;
1628                         switch (standard) {
1629                                 case STANDARD_C89:   invalid_mode = "c89";   goto default_cxx_warn;
1630                                 case STANDARD_C90:   invalid_mode = "c90";   goto default_cxx_warn;
1631                                 case STANDARD_C99:   invalid_mode = "c99";   goto default_cxx_warn;
1632                                 case STANDARD_GNU89: invalid_mode = "gnu89"; goto default_cxx_warn;
1633                                 case STANDARD_GNU99: invalid_mode = "gnu99"; goto default_cxx_warn;
1634
1635                                 case STANDARD_ANSI:
1636                                 case STANDARD_CXX98: c_mode = _CXX; break;
1637
1638 default_cxx_warn:
1639                                         fprintf(stderr,
1640                                                         "warning: command line option \"-std=%s\" is not valid for C++\n",
1641                                                         invalid_mode);
1642                                 case STANDARD_DEFAULT:
1643                                 case STANDARD_GNUXX98: c_mode = _CXX | _GNUC; break;
1644                         }
1645
1646 do_parsing:
1647                         c_mode |= features_on;
1648                         c_mode &= ~features_off;
1649
1650                         /* do the actual parsing */
1651                         ir_timer_t *t_parsing = ir_timer_new();
1652                         timer_register(t_parsing, "Frontend: Parsing");
1653                         timer_push(t_parsing);
1654                         init_tokens();
1655                         translation_unit_t *const unit = do_parsing(in, filename);
1656                         timer_pop(t_parsing);
1657
1658                         /* prints the AST even if errors occurred */
1659                         if (mode == PrintAst) {
1660                                 print_to_file(out);
1661                                 print_ast(unit);
1662                         }
1663
1664                         if (error_count > 0) {
1665                                 /* parsing failed because of errors */
1666                                 fprintf(stderr, "%u error(s), %u warning(s)\n", error_count,
1667                                         warning_count);
1668                                 result = EXIT_FAILURE;
1669                                 continue;
1670                         } else if (warning_count > 0) {
1671                                 fprintf(stderr, "%u warning(s)\n", warning_count);
1672                         }
1673
1674                         if (in == preprocessed_in) {
1675                                 int pp_result = pclose(preprocessed_in);
1676                                 if (pp_result != EXIT_SUCCESS) {
1677                                         /* remove output file */
1678                                         if (out != stdout)
1679                                                 unlink(outname);
1680                                         return EXIT_FAILURE;
1681                                 }
1682                         }
1683
1684                         if (mode == BenchmarkParser) {
1685                                 return result;
1686                         } else if (mode == PrintFluffy) {
1687                                 write_fluffy_decls(out, unit);
1688                                 continue;
1689                         } else if (mode == PrintJna) {
1690                                 write_jna_decls(out, unit);
1691                                 continue;
1692                         }
1693
1694                         /* build the firm graph */
1695                         ir_timer_t *t_construct = ir_timer_new();
1696                         timer_register(t_construct, "Frontend: Graph construction");
1697                         timer_push(t_construct);
1698                         if (already_constructed_firm) {
1699                                 panic("compiling multiple files/translation units not possible");
1700                         }
1701                         translation_unit_to_firm(unit);
1702                         already_constructed_firm = true;
1703                         timer_pop(t_construct);
1704
1705 graph_built:
1706                         if (mode == ParseOnly) {
1707                                 continue;
1708                         }
1709
1710                         if (mode == CompileDump) {
1711                                 /* find irg */
1712                                 ident    *id     = new_id_from_str(dumpfunction);
1713                                 ir_graph *irg    = NULL;
1714                                 int       n_irgs = get_irp_n_irgs();
1715                                 for (int i = 0; i < n_irgs; ++i) {
1716                                         ir_graph *tirg   = get_irp_irg(i);
1717                                         ident    *irg_id = get_entity_ident(get_irg_entity(tirg));
1718                                         if (irg_id == id) {
1719                                                 irg = tirg;
1720                                                 break;
1721                                         }
1722                                 }
1723
1724                                 if (irg == NULL) {
1725                                         fprintf(stderr, "No graph for function '%s' found\n",
1726                                                 dumpfunction);
1727                                         return EXIT_FAILURE;
1728                                 }
1729
1730                                 dump_ir_graph_file(out, irg);
1731                                 fclose(out);
1732                                 return EXIT_SUCCESS;
1733                         }
1734
1735                         if (mode == CompileExportIR) {
1736                                 fclose(out);
1737                                 ir_export(outname);
1738                                 return EXIT_SUCCESS;
1739                         }
1740
1741                         gen_firm_finish(asm_out, filename);
1742                         if (asm_out != out) {
1743                                 fclose(asm_out);
1744                         }
1745                 } else if (filetype == FILETYPE_IR) {
1746                         fclose(in);
1747                         ir_import(filename);
1748                         goto graph_built;
1749                 } else if (filetype == FILETYPE_PREPROCESSED_ASSEMBLER) {
1750                         copy_file(asm_out, in);
1751                         if (in == preprocessed_in) {
1752                                 int pp_result = pclose(preprocessed_in);
1753                                 if (pp_result != EXIT_SUCCESS) {
1754                                         /* remove output in error case */
1755                                         if (out != stdout)
1756                                                 unlink(outname);
1757                                         return pp_result;
1758                                 }
1759                         }
1760                         if (asm_out != out) {
1761                                 fclose(asm_out);
1762                         }
1763                 }
1764
1765                 if (mode == Compile)
1766                         continue;
1767
1768                 /* if we're here then we have preprocessed assembly */
1769                 filename = asm_tempfile;
1770                 filetype = FILETYPE_PREPROCESSED_ASSEMBLER;
1771
1772                 /* assemble */
1773                 if (filetype == FILETYPE_PREPROCESSED_ASSEMBLER) {
1774                         char        temp[1024];
1775                         const char *filename_o;
1776                         if (mode == CompileAssemble) {
1777                                 fclose(out);
1778                                 filename_o = outname;
1779                         } else {
1780                                 FILE *tempf = make_temp_file(temp, sizeof(temp), "cco");
1781                                 fclose(tempf);
1782                                 filename_o = temp;
1783                         }
1784
1785                         assemble(filename_o, filename);
1786
1787                         size_t len = strlen(filename_o) + 1;
1788                         filename = obstack_copy(&file_obst, filename_o, len);
1789                         filetype = FILETYPE_OBJECT;
1790                 }
1791
1792                 /* ok we're done here, process next file */
1793                 file->name = filename;
1794                 file->type = filetype;
1795         }
1796
1797         if (result != EXIT_SUCCESS) {
1798                 if (out != stdout)
1799                         unlink(outname);
1800                 return result;
1801         }
1802
1803         /* link program file */
1804         if (mode == CompileAssembleLink) {
1805                 obstack_1grow(&ldflags_obst, '\0');
1806                 const char *flags = obstack_finish(&ldflags_obst);
1807
1808                 /* construct commandline */
1809                 const char *linker = getenv("CPARSER_LINK");
1810                 if (linker != NULL) {
1811                         obstack_printf(&file_obst, "%s ", linker);
1812                 } else {
1813                         if (target_triple != NULL)
1814                                 obstack_printf(&file_obst, "%s-", target_triple);
1815                         obstack_printf(&file_obst, "%s ", LINKER);
1816                 }
1817
1818                 for (file_list_entry_t *entry = files; entry != NULL;
1819                                 entry = entry->next) {
1820                         if (entry->type != FILETYPE_OBJECT)
1821                                 continue;
1822
1823                         add_flag(&file_obst, "%s", entry->name);
1824                 }
1825
1826                 add_flag(&file_obst, "-o");
1827                 add_flag(&file_obst, outname);
1828                 obstack_printf(&file_obst, "%s", flags);
1829                 obstack_1grow(&file_obst, '\0');
1830
1831                 char *commandline = obstack_finish(&file_obst);
1832
1833                 if (verbose) {
1834                         puts(commandline);
1835                 }
1836                 int err = system(commandline);
1837                 if (err != EXIT_SUCCESS) {
1838                         fprintf(stderr, "linker reported an error\n");
1839                         return EXIT_FAILURE;
1840                 }
1841         }
1842
1843         if (do_timing)
1844                 timer_term(stderr);
1845
1846         obstack_free(&cppflags_obst, NULL);
1847         obstack_free(&ldflags_obst, NULL);
1848         obstack_free(&asflags_obst, NULL);
1849         obstack_free(&file_obst, NULL);
1850
1851         exit_mangle();
1852         exit_ast2firm();
1853         exit_parser();
1854         exit_ast();
1855         exit_lexer();
1856         exit_typehash();
1857         exit_types();
1858         exit_tokens();
1859         exit_symbol_table();
1860         return EXIT_SUCCESS;
1861 }