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_cmdline.h"
  74 #include "adt/error.h"
  75 #include "wrappergen/write_fluffy.h"
  76 #include "wrappergen/write_caml.h"
  77 #include "wrappergen/write_jna.h"
  78 #include "revision.h"
  79 #include "warning.h"
  80 #include "mangle.h"
  81
  82 #ifndef PREPROCESSOR
  83 #ifndef __WIN32__
  84 #define PREPROCESSOR "gcc -E -m32 -U__STRICT_ANSI__"
  85 #else
  86 #define PREPROCESSOR "cpp -m32 -U__STRICT_ANSI__"
  87 #endif
  88 #endif
  89
  90 #ifndef LINKER
  91 #define LINKER    "gcc -m32"
  92 #endif
  93
  94 #ifndef ASSEMBLER
  95 #ifdef __APPLE__
  96 #define ASSEMBLER "gcc -c -xassembler"
  97 #else
  98 #define ASSEMBLER "as --32"
  99 #endif
 100 #endif
 101
 102 /** The current c mode/dialect. */
 103 unsigned int c_mode = _C89 | _ANSI | _C99 | _GNUC;
 104
 105 /** The 'machine size', 16, 32 or 64 bit, 32bit is the default. */
 106 unsigned int machine_size = 32;
 107
 108 /** true if the char type is signed. */
 109 bool char_is_signed = true;
 110
 111 /** true for strict language checking. */
 112 bool strict_mode = false;
 113
 114 /** use builtins for some libc functions */
 115 bool use_builtins = false;
 116
 117 /** we have extern function with const attribute. */
 118 bool have_const_functions = false;
 119
 120 atomic_type_kind_t wchar_atomic_kind = ATOMIC_TYPE_INT;
 121
 122 /* to switch on printing of implicit casts */
 123 extern bool print_implicit_casts;
 124
 125 /* to switch on printing of parenthesis to indicate operator precedence */
 126 extern bool print_parenthesis;
 127
 128 static int             verbose;
 129 static struct obstack  cppflags_obst, ldflags_obst;
 130 static char            dep_target[1024];
 131 static const char     *outname;
 132
 133 typedef enum lang_standard_t {
 134         STANDARD_DEFAULT, /* gnu99 (for C, GCC does gnu89) or gnu++98 (for C++) */
 135         STANDARD_ANSI,    /* c89 (for C) or c++98 (for C++) */
 136         STANDARD_C89,     /* ISO C90 (sic) */
 137         STANDARD_C90,     /* ISO C90 as modified in amendment 1 */
 138         STANDARD_C99,     /* ISO C99 */
 139         STANDARD_GNU89,   /* ISO C90 plus GNU extensions (including some C99) */
 140         STANDARD_GNU99,   /* ISO C99 plus GNU extensions */
 141         STANDARD_CXX98,   /* ISO C++ 1998 plus amendments */
 142         STANDARD_GNUXX98  /* ISO C++ 1998 plus amendments and GNU extensions */
 143 } lang_standard_t;
 144
 145 static lang_standard_t standard;
 146
 147 typedef struct file_list_entry_t file_list_entry_t;
 148
 149 typedef enum filetype_t {
 150         FILETYPE_AUTODETECT,
 151         FILETYPE_C,
 152         FILETYPE_PREPROCESSED_C,
 153         FILETYPE_CXX,
 154         FILETYPE_PREPROCESSED_CXX,
 155         FILETYPE_ASSEMBLER,
 156         FILETYPE_PREPROCESSED_ASSEMBLER,
 157         FILETYPE_OBJECT,
 158         FILETYPE_IR,
 159         FILETYPE_UNKNOWN
 160 } filetype_t;
 161
 162 struct file_list_entry_t {
 163         const char  *name; /**< filename or NULL for stdin */
 164         filetype_t   type;
 165         file_list_entry_t *next;
 166 };
 167
 168 static file_list_entry_t *temp_files;
 169
 170 #if defined(_DEBUG) || defined(FIRM_DEBUG)
 171 /**
 172  * Debug printf implementation.
 173  *
 174  * @param fmt  printf style format parameter
 175  */
 176 void dbg_printf(const char *fmt, ...)
 177 {
 178         va_list list;
 179
 180         if (firm_dump.debug_print) {
 181                 va_start(list, fmt);
 182                 vprintf(fmt, list);
 183                 va_end(list);
 184         }  /* if */
 185 }
 186 #endif /* defined(_DEBUG) || defined(FIRM_DEBUG) */
 187
 188 static void initialize_firm(void)
 189 {
 190         firm_early_init();
 191
 192         dump_consts_local(1);
 193         dump_keepalive_edges(1);
 194 }
 195
 196 static void get_output_name(char *buf, size_t buflen, const char *inputname,
 197                             const char *newext)
 198 {
 199         if (inputname == NULL)
 200                 inputname = "a";
 201
 202         char const *const last_slash = strrchr(inputname, '/');
 203         char const *const filename   =
 204                 last_slash != NULL ? last_slash + 1 : inputname;
 205         char const *const last_dot   = strrchr(filename, '.');
 206         char const *const name_end   =
 207                 last_dot != NULL ? last_dot : strchr(filename, '\0');
 208
 209         int const len = snprintf(buf, buflen, "%.*s%s",
 210                         (int)(name_end - filename), filename, newext);
 211 #ifdef _WIN32
 212         if (len < 0 || buflen <= (size_t)len)
 213 #else
 214         if (buflen <= (size_t)len)
 215 #endif
 216                 panic("filename too long");
 217 }
 218
 219 #include "builtins.h"
 220
 221 static translation_unit_t *do_parsing(FILE *const in, const char *const input_name)
 222 {
 223         start_parsing();
 224
 225         if (use_builtins) {
 226                 lexer_open_buffer(builtins, sizeof(builtins)-1, "<builtin>");
 227                 parse();
 228         }
 229
 230         lexer_open_stream(in, input_name);
 231         parse();
 232
 233         translation_unit_t *unit = finish_parsing();
 234         return unit;
 235 }
 236
 237 static void lextest(FILE *in, const char *fname)
 238 {
 239         lexer_open_stream(in, fname);
 240
 241         do {
 242                 lexer_next_preprocessing_token();
 243                 print_token(stdout, &lexer_token);
 244                 putchar('\n');
 245         } while (lexer_token.type != T_EOF);
 246 }
 247
 248 static void add_flag(struct obstack *obst, const char *format, ...)
 249 {
 250         char buf[65536];
 251         va_list ap;
 252
 253         va_start(ap, format);
 254 #ifdef _WIN32
 255         int len =
 256 #endif
 257                 vsnprintf(buf, sizeof(buf), format, ap);
 258         va_end(ap);
 259
 260         obstack_1grow(obst, ' ');
 261 #ifdef _WIN32
 262         obstack_1grow(obst, '"');
 263         obstack_grow(obst, buf, len);
 264         obstack_1grow(obst, '"');
 265 #else
 266         /* escape stuff... */
 267         for (char *c = buf; *c != '\0'; ++c) {
 268                 switch(*c) {
 269                 case ' ':
 270                 case '"':
 271                 case '$':
 272                 case '&':
 273                 case '(':
 274                 case ')':
 275                 case ';':
 276                 case '<':
 277                 case '>':
 278                 case '\'':
 279                 case '\\':
 280                 case '\n':
 281                 case '\r':
 282                 case '\t':
 283                 case '`':
 284                 case '|':
 285                         obstack_1grow(obst, '\\');
 286                         /* FALLTHROUGH */
 287                 default:
 288                         obstack_1grow(obst, *c);
 289                         break;
 290                 }
 291         }
 292 #endif
 293 }
 294
 295 static const char *type_to_string(type_t *type)
 296 {
 297         assert(type->kind == TYPE_ATOMIC);
 298         return get_atomic_kind_name(type->atomic.akind);
 299 }
 300
 301 static FILE *preprocess(const char *fname, filetype_t filetype)
 302 {
 303         static const char *common_flags = NULL;
 304
 305         if (common_flags == NULL) {
 306                 obstack_1grow(&cppflags_obst, '\0');
 307                 const char *flags = obstack_finish(&cppflags_obst);
 308
 309                 /* setup default defines */
 310                 add_flag(&cppflags_obst, "-U__WCHAR_TYPE__");
 311                 add_flag(&cppflags_obst, "-D__WCHAR_TYPE__=%s", type_to_string(type_wchar_t));
 312                 add_flag(&cppflags_obst, "-U__SIZE_TYPE__");
 313                 add_flag(&cppflags_obst, "-D__SIZE_TYPE__=%s", type_to_string(type_size_t));
 314
 315                 add_flag(&cppflags_obst, "-U__VERSION__");
 316                 add_flag(&cppflags_obst, "-D__VERSION__=\"%s\"", cparser_REVISION);
 317
 318                 /* TODO hack... */
 319                 add_flag(&cppflags_obst, "-D__builtin_abort=abort");
 320                 add_flag(&cppflags_obst, "-D__builtin_abs=abs");
 321                 add_flag(&cppflags_obst, "-D__builtin_exit=exit");
 322                 add_flag(&cppflags_obst, "-D__builtin_malloc=malloc");
 323                 add_flag(&cppflags_obst, "-D__builtin_memcmp=memcmp");
 324                 add_flag(&cppflags_obst, "-D__builtin_memcpy=memcpy");
 325                 add_flag(&cppflags_obst, "-D__builtin_memset=memset");
 326                 add_flag(&cppflags_obst, "-D__builtin_strlen=strlen");
 327                 add_flag(&cppflags_obst, "-D__builtin_strcmp=strcmp");
 328                 add_flag(&cppflags_obst, "-D__builtin_strcpy=strcpy");
 329
 330                 if (flags[0] != '\0') {
 331                         size_t len = strlen(flags);
 332                         obstack_1grow(&cppflags_obst, ' ');
 333                         obstack_grow(&cppflags_obst, flags, len);
 334                 }
 335                 common_flags = obstack_finish(&cppflags_obst);
 336         }
 337
 338         assert(obstack_object_size(&cppflags_obst) == 0);
 339         obstack_printf(&cppflags_obst, "%s ", PREPROCESSOR);
 340         switch (filetype) {
 341         case FILETYPE_C:
 342                 add_flag(&cppflags_obst, "-std=c99");
 343                 break;
 344         case FILETYPE_CXX:
 345                 add_flag(&cppflags_obst, "-std=c++98");
 346                 break;
 347         case FILETYPE_ASSEMBLER:
 348                 add_flag(&cppflags_obst, "-x");
 349                 add_flag(&cppflags_obst, "assembler-with-cpp");
 350                 break;
 351         default:
 352                 break;
 353         }
 354         obstack_printf(&cppflags_obst, "%s", common_flags);
 355
 356         /* handle dependency generation */
 357         if (dep_target[0] != '\0') {
 358                 add_flag(&cppflags_obst, "-MF");
 359                 add_flag(&cppflags_obst, dep_target);
 360                 if (outname != NULL) {
 361                                 add_flag(&cppflags_obst, "-MQ");
 362                                 add_flag(&cppflags_obst, outname);
 363                 }
 364         }
 365         add_flag(&cppflags_obst, fname);
 366
 367         obstack_1grow(&cppflags_obst, '\0');
 368         char *buf = obstack_finish(&cppflags_obst);
 369         if (verbose) {
 370                 puts(buf);
 371         }
 372
 373         FILE *f = popen(buf, "r");
 374         if (f == NULL) {
 375                 fprintf(stderr, "invoking preprocessor failed\n");
 376                 exit(1);
 377         }
 378
 379         /* we don't really need that anymore */
 380         obstack_free(&cppflags_obst, buf);
 381
 382         return f;
 383 }
 384
 385 static void assemble(const char *out, const char *in)
 386 {
 387         char buf[65536];
 388
 389         snprintf(buf, sizeof(buf), "%s %s -o %s", ASSEMBLER, in, out);
 390         if (verbose) {
 391                 puts(buf);
 392         }
 393
 394         int err = system(buf);
 395         if (err != 0) {
 396                 fprintf(stderr, "assembler reported an error\n");
 397                 exit(1);
 398         }
 399 }
 400
 401 static void print_file_name(const char *file)
 402 {
 403         add_flag(&ldflags_obst, "-print-file-name=%s", file);
 404
 405         obstack_1grow(&ldflags_obst, '\0');
 406         const char *flags = obstack_finish(&ldflags_obst);
 407
 408         /* construct commandline */
 409         obstack_printf(&ldflags_obst, "%s ", LINKER);
 410         obstack_printf(&ldflags_obst, "%s", flags);
 411         obstack_1grow(&ldflags_obst, '\0');
 412
 413         char *commandline = obstack_finish(&ldflags_obst);
 414
 415         if (verbose) {
 416                 puts(commandline);
 417         }
 418         int err = system(commandline);
 419         if (err != EXIT_SUCCESS) {
 420                 fprintf(stderr, "linker reported an error\n");
 421                 exit(1);
 422         }
 423 }
 424
 425 static const char *try_dir(const char *dir)
 426 {
 427         if (dir == NULL)
 428                 return dir;
 429         if (access(dir, R_OK | W_OK | X_OK) == 0)
 430                 return dir;
 431         return NULL;
 432 }
 433
 434 static const char *get_tempdir(void)
 435 {
 436         static const char *tmpdir = NULL;
 437
 438         if (tmpdir != NULL)
 439                 return tmpdir;
 440
 441         if (tmpdir == NULL)
 442                 tmpdir = try_dir(getenv("TMPDIR"));
 443         if (tmpdir == NULL)
 444                 tmpdir = try_dir(getenv("TMP"));
 445         if (tmpdir == NULL)
 446                 tmpdir = try_dir(getenv("TEMP"));
 447
 448 #ifdef P_tmpdir
 449         if (tmpdir == NULL)
 450                 tmpdir = try_dir(P_tmpdir);
 451 #endif
 452
 453         if (tmpdir == NULL)
 454                 tmpdir = try_dir("/var/tmp");
 455         if (tmpdir == NULL)
 456                 tmpdir = try_dir("/usr/tmp");
 457         if (tmpdir == NULL)
 458                 tmpdir = try_dir("/tmp");
 459
 460         if (tmpdir == NULL)
 461                 tmpdir = ".";
 462
 463         return tmpdir;
 464 }
 465
 466 #ifndef HAVE_MKSTEMP
 467 /* cheap and nasty mkstemp replacement */
 468 static int mkstemp(char *templ)
 469 {
 470         mktemp(templ);
 471         return open(templ, O_RDWR|O_CREAT|O_EXCL|O_BINARY, 0600);
 472 }
 473 #endif
 474
 475 /**
 476  * an own version of tmpnam, which: writes in a buffer, emits no warnings
 477  * during linking (like glibc/gnu ld do for tmpnam)...
 478  */
 479 static FILE *make_temp_file(char *buffer, size_t buflen, const char *prefix)
 480 {
 481         const char *tempdir = get_tempdir();
 482
 483         snprintf(buffer, buflen, "%s/%sXXXXXX", tempdir, prefix);
 484
 485         int fd = mkstemp(buffer);
 486         if (fd == -1) {
 487                 fprintf(stderr, "couldn't create temporary file: %s\n",
 488                         strerror(errno));
 489                 exit(1);
 490         }
 491         FILE *out = fdopen(fd, "w");
 492         if (out == NULL) {
 493                 fprintf(stderr, "couldn't create temporary file FILE*\n");
 494                 exit(1);
 495         }
 496
 497         file_list_entry_t *entry = xmalloc(sizeof(*entry));
 498         memset(entry, 0, sizeof(*entry));
 499
 500         size_t  name_len = strlen(buffer) + 1;
 501         char   *name     = malloc(name_len);
 502         memcpy(name, buffer, name_len);
 503         entry->name      = name;
 504
 505         entry->next = temp_files;
 506         temp_files  = entry;
 507
 508         return out;
 509 }
 510
 511 static void free_temp_files(void)
 512 {
 513         file_list_entry_t *entry = temp_files;
 514         file_list_entry_t *next;
 515         for ( ; entry != NULL; entry = next) {
 516                 next = entry->next;
 517
 518                 unlink(entry->name);
 519                 free((char*) entry->name);
 520                 free(entry);
 521         }
 522         temp_files = NULL;
 523 }
 524
 525 /**
 526  * Do the necessary lowering for compound parameters.
 527  */
 528 void lower_compound_params(void)
 529 {
 530         lower_params_t params;
 531
 532         params.def_ptr_alignment    = 4;
 533         params.flags                = LF_COMPOUND_RETURN | LF_RETURN_HIDDEN;
 534         params.hidden_params        = ADD_HIDDEN_ALWAYS_IN_FRONT;
 535         params.find_pointer_type    = NULL;
 536         params.ret_compound_in_regs = NULL;
 537         lower_calls_with_compounds(&params);
 538 }
 539
 540 typedef enum compile_mode_t {
 541         BenchmarkParser,
 542         PreprocessOnly,
 543         ParseOnly,
 544         Compile,
 545         CompileDump,
 546         CompileExportIR,
 547         CompileAssemble,
 548         CompileAssembleLink,
 549         LexTest,
 550         PrintAst,
 551         PrintFluffy,
 552         PrintCaml,
 553         PrintJna
 554 } compile_mode_t;
 555
 556 static void usage(const char *argv0)
 557 {
 558         fprintf(stderr, "Usage %s input [-o output] [-c]\n", argv0);
 559 }
 560
 561 static void print_cparser_version(void)
 562 {
 563         printf("cparser (%s) using libFirm (%u.%u",
 564                cparser_REVISION, ir_get_version_major(),
 565                ir_get_version_minor());
 566
 567         const char *revision = ir_get_version_revision();
 568         if (revision[0] != 0) {
 569                 putchar(' ');
 570                 fputs(revision, stdout);
 571         }
 572
 573         const char *build = ir_get_version_build();
 574         if (build[0] != 0) {
 575                 putchar(' ');
 576                 fputs(build, stdout);
 577         }
 578         puts(")");
 579         puts("This is free software; see the source for copying conditions.  There is NO\n"
 580              "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n");
 581 }
 582
 583 static void set_be_option(const char *arg)
 584 {
 585         int res = firm_be_option(arg);
 586         (void) res;
 587         assert(res);
 588 }
 589
 590 static void set_option(const char *arg)
 591 {
 592         int res = firm_option(arg);
 593         (void) res;
 594         assert(res);
 595 }
 596
 597 static void copy_file(FILE *dest, FILE *input)
 598 {
 599         char buf[16384];
 600
 601         while (!feof(input) && !ferror(dest)) {
 602                 size_t read = fread(buf, 1, sizeof(buf), input);
 603                 if (fwrite(buf, 1, read, dest) != read) {
 604                         perror("couldn't write output");
 605                 }
 606         }
 607 }
 608
 609 static inline bool streq(char const* a, char const* b)
 610 {
 611         return strcmp(a, b) == 0;
 612 }
 613
 614 static inline bool strstart(char const* str, char const* start)
 615 {
 616         do {
 617                 if (*start == '\0')
 618                         return true;
 619         } while (*str++ == *start++);
 620         return false;
 621 }
 622
 623 static FILE *open_file(const char *filename)
 624 {
 625         if (streq(filename, "-")) {
 626                 return stdin;
 627         }
 628
 629         FILE *in = fopen(filename, "r");
 630         if (in == NULL) {
 631                 fprintf(stderr, "Couldn't open '%s': %s\n", filename,
 632                                 strerror(errno));
 633                 exit(1);
 634         }
 635
 636         return in;
 637 }
 638
 639 static filetype_t get_filetype_from_string(const char *string)
 640 {
 641         if (streq(string, "c") || streq(string, "c-header"))
 642                 return FILETYPE_C;
 643         if (streq(string, "c++") || streq(string, "c++-header"))
 644                 return FILETYPE_CXX;
 645         if (streq(string, "assembler"))
 646                 return FILETYPE_PREPROCESSED_ASSEMBLER;
 647         if (streq(string, "assembler-with-cpp"))
 648                 return FILETYPE_ASSEMBLER;
 649         if (streq(string, "none"))
 650                 return FILETYPE_AUTODETECT;
 651
 652         return FILETYPE_UNKNOWN;
 653 }
 654
 655 static void init_os_support(void)
 656 {
 657         /* OS option must be set to the backend */
 658         switch (firm_opt.os_support) {
 659         case OS_SUPPORT_MINGW:
 660                 set_be_option("ia32-gasmode=mingw");
 661                 wchar_atomic_kind = ATOMIC_TYPE_USHORT;
 662                 break;
 663         case OS_SUPPORT_LINUX:
 664                 set_be_option("ia32-gasmode=elf");
 665                 break;
 666         case OS_SUPPORT_MACHO:
 667                 set_be_option("ia32-gasmode=macho");
 668                 set_be_option("ia32-stackalign=4");
 669                 set_be_option("pic");
 670                 break;
 671         }
 672 }
 673
 674 int main(int argc, char **argv)
 675 {
 676         initialize_firm();
 677
 678         const char        *dumpfunction         = NULL;
 679         const char        *print_file_name_file = NULL;
 680         compile_mode_t     mode                 = CompileAssembleLink;
 681         int                opt_level            = 1;
 682         int                result               = EXIT_SUCCESS;
 683         char               cpu_arch[16]         = "ia32";
 684         file_list_entry_t *files                = NULL;
 685         file_list_entry_t *last_file            = NULL;
 686         bool               construct_dep_target = false;
 687         struct obstack     file_obst;
 688
 689         atexit(free_temp_files);
 690
 691         /* hack for now... */
 692         if (strstr(argv[0], "pptest") != NULL) {
 693                 extern int pptest_main(int argc, char **argv);
 694                 return pptest_main(argc, argv);
 695         }
 696
 697         obstack_init(&cppflags_obst);
 698         obstack_init(&ldflags_obst);
 699         obstack_init(&file_obst);
 700
 701 #define GET_ARG_AFTER(def, args)                                             \
 702         def = &arg[sizeof(args)-1];                                              \
 703         if (def[0] == '\0') {                                                     \
 704                 ++i;                                                                 \
 705                 if (i >= argc) {                                                      \
 706                         fprintf(stderr, "error: expected argument after '" args "'\n");  \
 707                         argument_errors = true;                                          \
 708                         break;                                                           \
 709                 }                                                                    \
 710                 def = argv[i];                                                       \
 711                 if (def[0] == '-' && def[1] != '\0') {                                \
 712                         fprintf(stderr, "error: expected argument after '" args "'\n");  \
 713                         argument_errors = true;                                          \
 714                         continue;                                                        \
 715                 }                                                                    \
 716         }
 717
 718 #define SINGLE_OPTION(ch) (option[0] == (ch) && option[1] == '\0')
 719
 720         /* early options parsing (find out optimisation level and OS) */
 721         for (int i = 1; i < argc; ++i) {
 722                 const char *arg = argv[i];
 723                 if (arg[0] != '-')
 724                         continue;
 725
 726                 const char *option = &arg[1];
 727                 if (option[0] == 'O') {
 728                         sscanf(&option[1], "%d", &opt_level);
 729                 }
 730                 if (strcmp(arg, "-fwin32") == 0) {
 731                         firm_opt.os_support = OS_SUPPORT_MINGW;
 732                 } else if (strcmp(arg, "-fmac") == 0) {
 733                         firm_opt.os_support = OS_SUPPORT_MACHO;
 734                 } else if (strcmp(arg, "-flinux") == 0) {
 735                         firm_opt.os_support = OS_SUPPORT_LINUX;
 736                 }
 737         }
 738
 739         /* set target/os specific stuff */
 740         init_os_support();
 741
 742         /* apply optimisation level */
 743         switch(opt_level) {
 744         case 0:
 745                 set_option("no-opt");
 746                 break;
 747         case 1:
 748                 set_option("no-inline");
 749                 break;
 750         default:
 751         case 4:
 752                 /* use_builtins = true; */
 753                 /* fallthrough */
 754         case 3:
 755                 set_option("jumpthreading");
 756                 set_option("if-conv");
 757                 /* fallthrough */
 758         case 2:
 759                 set_option("strict-aliasing");
 760                 set_option("inline");
 761                 set_option("deconv");
 762                 set_be_option("omitfp");
 763                 break;
 764         }
 765
 766         /* parse rest of options */
 767         standard                        = STANDARD_DEFAULT;
 768         unsigned        features_on     = 0;
 769         unsigned        features_off    = 0;
 770         filetype_t      forced_filetype = FILETYPE_AUTODETECT;
 771         bool            help_displayed  = false;
 772         bool            argument_errors = false;
 773         for (int i = 1; i < argc; ++i) {
 774                 const char *arg = argv[i];
 775                 if (arg[0] == '-' && arg[1] != '\0') {
 776                         /* an option */
 777                         const char *option = &arg[1];
 778                         if (option[0] == 'o') {
 779                                 GET_ARG_AFTER(outname, "-o");
 780                         } else if (option[0] == 'g') {
 781                                 set_be_option("debuginfo=stabs");
 782                                 set_be_option("omitfp=no");
 783                                 set_be_option("ia32-nooptcc=yes");
 784                         } else if (SINGLE_OPTION('c')) {
 785                                 mode = CompileAssemble;
 786                         } else if (SINGLE_OPTION('E')) {
 787                                 mode = PreprocessOnly;
 788                         } else if (SINGLE_OPTION('S')) {
 789                                 mode = Compile;
 790                         } else if (option[0] == 'O') {
 791                                 continue;
 792                         } else if (option[0] == 'I') {
 793                                 const char *opt;
 794                                 GET_ARG_AFTER(opt, "-I");
 795                                 add_flag(&cppflags_obst, "-I%s", opt);
 796                         } else if (option[0] == 'D') {
 797                                 const char *opt;
 798                                 GET_ARG_AFTER(opt, "-D");
 799                                 add_flag(&cppflags_obst, "-D%s", opt);
 800                         } else if (option[0] == 'U') {
 801                                 const char *opt;
 802                                 GET_ARG_AFTER(opt, "-U");
 803                                 add_flag(&cppflags_obst, "-U%s", opt);
 804                         } else if (option[0] == 'l') {
 805                                 const char *opt;
 806                                 GET_ARG_AFTER(opt, "-l");
 807                                 add_flag(&ldflags_obst, "-l%s", opt);
 808                         } else if (option[0] == 'L') {
 809                                 const char *opt;
 810                                 GET_ARG_AFTER(opt, "-L");
 811                                 add_flag(&ldflags_obst, "-L%s", opt);
 812                         } else if (SINGLE_OPTION('v')) {
 813                                 verbose = 1;
 814                         } else if (SINGLE_OPTION('w')) {
 815                                 memset(&warning, 0, sizeof(warning));
 816                         } else if (option[0] == 'x') {
 817                                 const char *opt;
 818                                 GET_ARG_AFTER(opt, "-x");
 819                                 forced_filetype = get_filetype_from_string(opt);
 820                                 if (forced_filetype == FILETYPE_UNKNOWN) {
 821                                         fprintf(stderr, "Unknown language '%s'\n", opt);
 822                                         argument_errors = true;
 823                                 }
 824                         } else if (streq(option, "M")) {
 825                                 mode = PreprocessOnly;
 826                                 add_flag(&cppflags_obst, "-M");
 827                         } else if (streq(option, "MMD") ||
 828                                    streq(option, "MD")) {
 829                             construct_dep_target = true;
 830                                 add_flag(&cppflags_obst, "-%s", option);
 831                         } else if (streq(option, "MM")  ||
 832                                    streq(option, "MP")) {
 833                                 add_flag(&cppflags_obst, "-%s", option);
 834                         } else if (streq(option, "MT") ||
 835                                    streq(option, "MQ") ||
 836                                    streq(option, "MF")) {
 837                                 const char *opt;
 838                                 GET_ARG_AFTER(opt, "-MT");
 839                                 add_flag(&cppflags_obst, "-%s", option);
 840                                 add_flag(&cppflags_obst, "%s", opt);
 841                         } else if (streq(option, "include")) {
 842                                 const char *opt;
 843                                 GET_ARG_AFTER(opt, "-include");
 844                                 add_flag(&cppflags_obst, "-include");
 845                                 add_flag(&cppflags_obst, "%s", opt);
 846                         } else if (streq(option, "isystem")) {
 847                                 const char *opt;
 848                                 GET_ARG_AFTER(opt, "-isystem");
 849                                 add_flag(&cppflags_obst, "-isystem");
 850                                 add_flag(&cppflags_obst, "%s", opt);
 851                         } else if (streq(option, "nostdinc")
 852                                         || streq(option, "trigraphs")) {
 853                                 /* pass these through to the preprocessor */
 854                                 add_flag(&cppflags_obst, "%s", arg);
 855                         } else if (streq(option, "pipe")) {
 856                                 /* here for gcc compatibility */
 857                         } else if (option[0] == 'f') {
 858                                 char const *orig_opt;
 859                                 GET_ARG_AFTER(orig_opt, "-f");
 860
 861                                 if (strstart(orig_opt, "align-loops=") ||
 862                                     strstart(orig_opt, "align-jumps=") ||
 863                                     strstart(orig_opt, "align-functions=")) {
 864                                         fprintf(stderr, "ignoring gcc option '-f%s'\n", orig_opt);
 865                                 } else if (strstart(orig_opt, "input-charset=")) {
 866                                         char const* const encoding = strchr(orig_opt, '=') + 1;
 867                                         select_input_encoding(encoding);
 868                                 } else if (streq(orig_opt, "verbose-asm")) {
 869                                         /* ignore: we always print verbose assembler */
 870                                 } else {
 871                                         char const *opt         = orig_opt;
 872                                         bool        truth_value = true;
 873                                         if (opt[0] == 'n' && opt[1] == 'o' && opt[2] == '-') {
 874                                                 truth_value = false;
 875                                                 opt += 3;
 876                                         }
 877
 878                                         if (streq(opt, "builtins")) {
 879                                                 use_builtins = truth_value;
 880                                         } else if (streq(opt, "dollars-in-identifiers")) {
 881                                                 allow_dollar_in_symbol = truth_value;
 882                                         } else if (streq(opt, "omit-frame-pointer")) {
 883                                                 set_be_option(truth_value ? "omitfp" : "omitfp=no");
 884                                         } else if (streq(opt, "short-wchar")) {
 885                                                 wchar_atomic_kind = truth_value ? ATOMIC_TYPE_USHORT
 886                                                         : ATOMIC_TYPE_INT;
 887                                         } else if (streq(opt, "signed-char")) {
 888                                                 char_is_signed = truth_value;
 889                                         } else if (streq(opt, "strength-reduce")) {
 890                                                 firm_option(truth_value ? "strength-red" : "no-strength-red");
 891                                         } else if (streq(opt, "syntax-only")) {
 892                                                 mode = truth_value ? ParseOnly : CompileAssembleLink;
 893                                         } else if (streq(opt, "unsigned-char")) {
 894                                                 char_is_signed = !truth_value;
 895                                         } else if (streq(opt, "fast-math")               ||
 896                                                    streq(opt, "jump-tables")             ||
 897                                                    streq(opt, "unroll-loops")            ||
 898                                                    streq(opt, "expensive-optimizations") ||
 899                                                    streq(opt, "common")                  ||
 900                                                    streq(opt, "PIC")                     ||
 901                                                    streq(opt, "align-loops")             ||
 902                                                    streq(opt, "align-jumps")             ||
 903                                                    streq(opt, "align-functions")) {
 904                                                 fprintf(stderr, "ignoring gcc option '-f%s'\n", orig_opt);
 905                                         } else {
 906                                                 int res = firm_option(orig_opt);
 907                                                 if (res == 0) {
 908                                                         fprintf(stderr, "error: unknown Firm option '-f%s'\n",
 909                                                                 orig_opt);
 910                                                         argument_errors = true;
 911                                                         continue;
 912                                                 } else if (res == -1) {
 913                                                         help_displayed = true;
 914                                                 }
 915                                         }
 916                                 }
 917                         } else if (option[0] == 'b') {
 918                                 const char *opt;
 919                                 GET_ARG_AFTER(opt, "-b");
 920                                 int res = firm_be_option(opt);
 921                                 if (res == 0) {
 922                                         fprintf(stderr, "error: unknown Firm backend option '-b %s'\n",
 923                                                 opt);
 924                                         argument_errors = true;
 925                                 } else if (res == -1) {
 926                                         help_displayed = true;
 927                                 } else if (strstart(opt, "isa=")) {
 928                                         strncpy(cpu_arch, opt, sizeof(cpu_arch));
 929                                 }
 930                         } else if (option[0] == 'W') {
 931                                 if (strstart(option + 1, "p,")) {
 932                                         // pass options directly to the preprocessor
 933                                         const char *opt;
 934                                         GET_ARG_AFTER(opt, "-Wp,");
 935                                         add_flag(&cppflags_obst, "-Wp,%s", opt);
 936                                 } else if (strstart(option + 1, "l,")) {
 937                                         // pass options directly to the linker
 938                                         const char *opt;
 939                                         GET_ARG_AFTER(opt, "-Wl,");
 940                                         add_flag(&ldflags_obst, "-Wl,%s", opt);
 941                                 } else if (streq(option + 1, "no-trigraphs")
 942                                                         || streq(option + 1, "undef")) {
 943                                         add_flag(&cppflags_obst, "%s", arg);
 944                                 } else {
 945                                         set_warning_opt(&option[1]);
 946                                 }
 947                         } else if (option[0] == 'm') {
 948                                 /* -m options */
 949                                 const char *opt;
 950                                 char arch_opt[64];
 951
 952                                 GET_ARG_AFTER(opt, "-m");
 953                                 if (strstart(opt, "arch=")) {
 954                                         GET_ARG_AFTER(opt, "-march=");
 955                                         snprintf(arch_opt, sizeof(arch_opt), "%s-arch=%s", cpu_arch, opt);
 956                                         int res = firm_be_option(arch_opt);
 957                                         if (res == 0)
 958                                                 argument_errors = true;
 959                                         else {
 960                                                 snprintf(arch_opt, sizeof(arch_opt), "%s-opt=%s", cpu_arch, opt);
 961                                                 int res = firm_be_option(arch_opt);
 962                                                 if (res == 0)
 963                                                         argument_errors = true;
 964                                         }
 965                                 } else if (strstart(opt, "tune=")) {
 966                                         GET_ARG_AFTER(opt, "-mtune=");
 967                                         snprintf(arch_opt, sizeof(arch_opt), "%s-opt=%s", cpu_arch, opt);
 968                                         int res = firm_be_option(arch_opt);
 969                                         if (res == 0)
 970                                                 argument_errors = true;
 971                                 } else if (strstart(opt, "cpu=")) {
 972                                         GET_ARG_AFTER(opt, "-mcpu=");
 973                                         snprintf(arch_opt, sizeof(arch_opt), "%s-arch=%s", cpu_arch, opt);
 974                                         int res = firm_be_option(arch_opt);
 975                                         if (res == 0)
 976                                                 argument_errors = true;
 977                                 } else if (strstart(opt, "fpmath=")) {
 978                                         GET_ARG_AFTER(opt, "-mfpmath=");
 979                                         if (streq(opt, "387"))
 980                                                 opt = "x87";
 981                                         else if (streq(opt, "sse"))
 982                                                 opt = "sse2";
 983                                         else {
 984                                                 fprintf(stderr, "error: option -mfpumath supports only 387 or sse\n");
 985                                                 argument_errors = true;
 986                                         }
 987                                         if (!argument_errors) {
 988                                                 snprintf(arch_opt, sizeof(arch_opt), "%s-fpunit=%s", cpu_arch, opt);
 989                                                 int res = firm_be_option(arch_opt);
 990                                                 if (res == 0)
 991                                                         argument_errors = true;
 992                                         }
 993                                 } else if (strstart(opt, "preferred-stack-boundary=")) {
 994                                         GET_ARG_AFTER(opt, "-mpreferred-stack-boundary=");
 995                                         snprintf(arch_opt, sizeof(arch_opt), "%s-stackalign=%s", cpu_arch, opt);
 996                                         int res = firm_be_option(arch_opt);
 997                                         if (res == 0)
 998                                                 argument_errors = true;
 999                                 } else if (streq(opt, "omit-leaf-frame-pointer")) {
1000                                         set_be_option("omitleaffp=1");
1001                                 } else if (streq(opt, "no-omit-leaf-frame-pointer")) {
1002                                         set_be_option("omitleaffp=0");
1003                                 } else if (streq(opt, "rtd")) {
1004                                         default_calling_convention = CC_STDCALL;
1005                                 } else {
1006                                         char *endptr;
1007                                         long int value = strtol(opt, &endptr, 10);
1008                                         if (*endptr != '\0') {
1009                                                 fprintf(stderr, "error: wrong option '-m %s'\n",  opt);
1010                                                 argument_errors = true;
1011                                         }
1012                                         if (value != 16 && value != 32 && value != 64) {
1013                                                 fprintf(stderr, "error: option -m supports only 16, 32 or 64\n");
1014                                                 argument_errors = true;
1015                                         } else {
1016                                                 machine_size = (unsigned int)value;
1017                                         }
1018                                 }
1019                         } else if (streq(option, "pg")) {
1020                                 set_be_option("gprof");
1021                                 add_flag(&ldflags_obst, "-pg");
1022                         } else if (streq(option, "pedantic") ||
1023                                    streq(option, "ansi")) {
1024                                 fprintf(stderr, "warning: ignoring gcc option '%s'\n", arg);
1025                         } else if (streq(option, "shared")) {
1026                                 add_flag(&ldflags_obst, "-shared");
1027                         } else if (strstart(option, "std=")) {
1028                                 const char *const o = &option[4];
1029                                 standard =
1030                                         streq(o, "c++")            ? STANDARD_CXX98   :
1031                                         streq(o, "c++98")          ? STANDARD_CXX98   :
1032                                         streq(o, "c89")            ? STANDARD_C89     :
1033                                         streq(o, "c99")            ? STANDARD_C99     :
1034                                         streq(o, "c9x")            ? STANDARD_C99     : // deprecated
1035                                         streq(o, "gnu++98")        ? STANDARD_GNUXX98 :
1036                                         streq(o, "gnu89")          ? STANDARD_GNU89   :
1037                                         streq(o, "gnu99")          ? STANDARD_GNU99   :
1038                                         streq(o, "gnu9x")          ? STANDARD_GNU99   : // deprecated
1039                                         streq(o, "iso9899:1990")   ? STANDARD_C89     :
1040                                         streq(o, "iso9899:199409") ? STANDARD_C90     :
1041                                         streq(o, "iso9899:1999")   ? STANDARD_C99     :
1042                                         streq(o, "iso9899:199x")   ? STANDARD_C99     : // deprecated
1043                                         (fprintf(stderr, "warning: ignoring gcc option '%s'\n", arg), standard);
1044                         } else if (streq(option, "version")) {
1045                                 print_cparser_version();
1046                         } else if (strstart(option, "print-file-name=")) {
1047                                 GET_ARG_AFTER(print_file_name_file, "-print-file-name=");
1048                         } else if (option[0] == '-') {
1049                                 /* double dash option */
1050                                 ++option;
1051                                 if (streq(option, "gcc")) {
1052                                         features_on  |=  _GNUC;
1053                                         features_off &= ~_GNUC;
1054                                 } else if (streq(option, "no-gcc")) {
1055                                         features_on  &= ~_GNUC;
1056                                         features_off |=  _GNUC;
1057                                 } else if (streq(option, "ms")) {
1058                                         features_on  |=  _MS;
1059                                         features_off &= ~_MS;
1060                                 } else if (streq(option, "no-ms")) {
1061                                         features_on  &= ~_MS;
1062                                         features_off |=  _MS;
1063                                 } else if (streq(option, "strict")) {
1064                                         strict_mode = true;
1065                                 } else if (streq(option, "lextest")) {
1066                                         mode = LexTest;
1067                                 } else if (streq(option, "benchmark")) {
1068                                         mode = BenchmarkParser;
1069                                 } else if (streq(option, "print-ast")) {
1070                                         mode = PrintAst;
1071                                 } else if (streq(option, "print-implicit-cast")) {
1072                                         print_implicit_casts = true;
1073                                 } else if (streq(option, "print-parenthesis")) {
1074                                         print_parenthesis = true;
1075                                 } else if (streq(option, "print-fluffy")) {
1076                                         mode = PrintFluffy;
1077                                 } else if (streq(option, "print-caml")) {
1078                                         mode = PrintCaml;
1079                                 } else if (streq(option, "print-jna")) {
1080                                         mode = PrintJna;
1081                                 } else if (streq(option, "version")) {
1082                                         print_cparser_version();
1083                                         exit(EXIT_SUCCESS);
1084                                 } else if (streq(option, "dump-function")) {
1085                                         ++i;
1086                                         if (i >= argc) {
1087                                                 fprintf(stderr, "error: "
1088                                                         "expected argument after '--dump-function'\n");
1089                                                 argument_errors = true;
1090                                                 break;
1091                                         }
1092                                         dumpfunction = argv[i];
1093                                         mode         = CompileDump;
1094                                 } else if (streq(option, "export-ir")) {
1095                                         mode = CompileExportIR;
1096                                 } else {
1097                                         fprintf(stderr, "error: unknown argument '%s'\n", arg);
1098                                         argument_errors = true;
1099                                 }
1100                         } else {
1101                                 fprintf(stderr, "error: unknown argument '%s'\n", arg);
1102                                 argument_errors = true;
1103                         }
1104                 } else {
1105                         filetype_t type = forced_filetype;
1106                         if (type == FILETYPE_AUTODETECT) {
1107                                 if (streq(arg, "-")) {
1108                                         /* - implicitly means C source file */
1109                                         type = FILETYPE_C;
1110                                 } else {
1111                                         const char *suffix = strrchr(arg, '.');
1112                                         /* Ensure there is at least one char before the suffix */
1113                                         if (suffix != NULL && suffix != arg) {
1114                                                 ++suffix;
1115                                                 type =
1116                                                         streq(suffix, "S")   ? FILETYPE_ASSEMBLER              :
1117                                                         streq(suffix, "a")   ? FILETYPE_OBJECT                 :
1118                                                         streq(suffix, "c")   ? FILETYPE_C                      :
1119                                                         streq(suffix, "cc")  ? FILETYPE_CXX                    :
1120                                                         streq(suffix, "cpp") ? FILETYPE_CXX                    :
1121                                                         streq(suffix, "cxx") ? FILETYPE_CXX                    :
1122                                                         streq(suffix, "h")   ? FILETYPE_C                      :
1123                                                         streq(suffix, "ir")  ? FILETYPE_IR                     :
1124                                                         streq(suffix, "o")   ? FILETYPE_OBJECT                 :
1125                                                         streq(suffix, "s")   ? FILETYPE_PREPROCESSED_ASSEMBLER :
1126                                                         streq(suffix, "so")  ? FILETYPE_OBJECT                 :
1127                                                         FILETYPE_AUTODETECT;
1128                                         }
1129                                 }
1130
1131                                 if (type == FILETYPE_AUTODETECT) {
1132                                         fprintf(stderr, "'%s': file format not recognized\n", arg);
1133                                         continue;
1134                                 }
1135                         }
1136
1137                         file_list_entry_t *entry
1138                                 = obstack_alloc(&file_obst, sizeof(entry[0]));
1139                         memset(entry, 0, sizeof(entry[0]));
1140                         entry->name = arg;
1141                         entry->type = type;
1142
1143                         if (last_file != NULL) {
1144                                 last_file->next = entry;
1145                         } else {
1146                                 files = entry;
1147                         }
1148                         last_file = entry;
1149                 }
1150         }
1151
1152         if (print_file_name_file != NULL) {
1153                 print_file_name(print_file_name_file);
1154                 return 0;
1155         }
1156
1157         if (files == NULL) {
1158                 fprintf(stderr, "error: no input files specified\n");
1159                 argument_errors = true;
1160         }
1161
1162         if (help_displayed) {
1163                 return !argument_errors;
1164         }
1165         if (argument_errors) {
1166                 usage(argv[0]);
1167                 return 1;
1168         }
1169
1170         /* we do the lowering in ast2firm */
1171         firm_opt.lower_bitfields = FALSE;
1172
1173         /* set the c_mode here, types depends on it */
1174         c_mode |= features_on;
1175         c_mode &= ~features_off;
1176
1177         gen_firm_init();
1178         init_symbol_table();
1179         init_types();
1180         init_typehash();
1181         init_basic_types();
1182         init_lexer();
1183         init_ast();
1184         init_parser();
1185         init_ast2firm();
1186         init_mangle();
1187
1188         if (construct_dep_target) {
1189                 if (outname != 0 && strlen(outname) >= 2) {
1190                         get_output_name(dep_target, sizeof(dep_target), outname, ".d");
1191                 } else {
1192                         get_output_name(dep_target, sizeof(dep_target), files->name, ".d");
1193                 }
1194         } else {
1195                 dep_target[0] = '\0';
1196         }
1197
1198         char outnamebuf[4096];
1199         if (outname == NULL) {
1200                 const char *filename = files->name;
1201
1202                 switch(mode) {
1203                 case BenchmarkParser:
1204                 case PrintAst:
1205                 case PrintFluffy:
1206                 case PrintCaml:
1207                 case PrintJna:
1208                 case LexTest:
1209                 case PreprocessOnly:
1210                 case ParseOnly:
1211                         outname = "-";
1212                         break;
1213                 case Compile:
1214                         get_output_name(outnamebuf, sizeof(outnamebuf), filename, ".s");
1215                         outname = outnamebuf;
1216                         break;
1217                 case CompileAssemble:
1218                         get_output_name(outnamebuf, sizeof(outnamebuf), filename, ".o");
1219                         outname = outnamebuf;
1220                         break;
1221                 case CompileDump:
1222                         get_output_name(outnamebuf, sizeof(outnamebuf), dumpfunction,
1223                                         ".vcg");
1224                         outname = outnamebuf;
1225                         break;
1226                 case CompileExportIR:
1227                         get_output_name(outnamebuf, sizeof(outnamebuf), filename, ".ir");
1228                         outname = outnamebuf;
1229                         break;
1230                 case CompileAssembleLink:
1231 #ifdef _WIN32
1232                         outname = "a.exe";
1233 #else
1234                         outname = "a.out";
1235 #endif
1236                         break;
1237                 }
1238         }
1239
1240         assert(outname != NULL);
1241
1242         FILE *out;
1243         if (streq(outname, "-")) {
1244                 out = stdout;
1245         } else {
1246                 out = fopen(outname, "w");
1247                 if (out == NULL) {
1248                         fprintf(stderr, "Couldn't open '%s' for writing: %s\n", outname,
1249                                         strerror(errno));
1250                         return 1;
1251                 }
1252         }
1253
1254         file_list_entry_t *file;
1255         for (file = files; file != NULL; file = file->next) {
1256                 char        asm_tempfile[1024];
1257                 const char *filename = file->name;
1258                 filetype_t  filetype = file->type;
1259
1260                 if (filetype == FILETYPE_OBJECT)
1261                         continue;
1262
1263                 FILE *in = NULL;
1264                 if (mode == LexTest) {
1265                         if (in == NULL)
1266                                 in = open_file(filename);
1267                         lextest(in, filename);
1268                         fclose(in);
1269                         exit(EXIT_SUCCESS);
1270                 }
1271
1272                 FILE *preprocessed_in = NULL;
1273                 filetype_t next_filetype = filetype;
1274                 switch (filetype) {
1275                         case FILETYPE_C:
1276                                 next_filetype = FILETYPE_PREPROCESSED_C;
1277                                 goto preprocess;
1278                         case FILETYPE_CXX:
1279                                 next_filetype = FILETYPE_PREPROCESSED_CXX;
1280                                 goto preprocess;
1281                         case FILETYPE_ASSEMBLER:
1282                                 next_filetype = FILETYPE_PREPROCESSED_ASSEMBLER;
1283                                 goto preprocess;
1284 preprocess:
1285                                 /* no support for input on FILE* yet */
1286                                 if (in != NULL)
1287                                         panic("internal compiler error: in for preprocessor != NULL");
1288
1289                                 preprocessed_in = preprocess(filename, filetype);
1290                                 if (mode == PreprocessOnly) {
1291                                         copy_file(out, preprocessed_in);
1292                                         int result = pclose(preprocessed_in);
1293                                         fclose(out);
1294                                         /* remove output file in case of error */
1295                                         if (out != stdout && result != EXIT_SUCCESS) {
1296                                                 unlink(outname);
1297                                         }
1298                                         return result;
1299                                 }
1300
1301                                 in = preprocessed_in;
1302                                 filetype = next_filetype;
1303                                 break;
1304
1305                         default:
1306                                 break;
1307                 }
1308
1309                 FILE *asm_out;
1310                 if (mode == Compile) {
1311                         asm_out = out;
1312                 } else {
1313                         asm_out = make_temp_file(asm_tempfile, sizeof(asm_tempfile), "ccs");
1314                 }
1315
1316                 if (in == NULL)
1317                         in = open_file(filename);
1318
1319                 /* preprocess and compile */
1320                 if (filetype == FILETYPE_PREPROCESSED_C) {
1321                         char const* invalid_mode;
1322                         switch (standard) {
1323                                 case STANDARD_ANSI:
1324                                 case STANDARD_C89:   c_mode = _C89;                break;
1325                                 /* TODO determine difference between these two */
1326                                 case STANDARD_C90:   c_mode = _C89;                break;
1327                                 case STANDARD_C99:   c_mode = _C89 | _C99;         break;
1328                                 case STANDARD_GNU89: c_mode = _C89 |        _GNUC; break;
1329
1330 default_c_warn:
1331                                         fprintf(stderr,
1332                                                         "warning: command line option \"-std=%s\" is not valid for C\n",
1333                                                         invalid_mode);
1334                                         /* FALLTHROUGH */
1335                                 case STANDARD_DEFAULT:
1336                                 case STANDARD_GNU99:   c_mode = _C89 | _C99 | _GNUC; break;
1337
1338                                 case STANDARD_CXX98:   invalid_mode = "c++98"; goto default_c_warn;
1339                                 case STANDARD_GNUXX98: invalid_mode = "gnu98"; goto default_c_warn;
1340                         }
1341                         goto do_parsing;
1342                 } else if (filetype == FILETYPE_PREPROCESSED_CXX) {
1343                         char const* invalid_mode;
1344                         switch (standard) {
1345                                 case STANDARD_C89:   invalid_mode = "c89";   goto default_cxx_warn;
1346                                 case STANDARD_C90:   invalid_mode = "c90";   goto default_cxx_warn;
1347                                 case STANDARD_C99:   invalid_mode = "c99";   goto default_cxx_warn;
1348                                 case STANDARD_GNU89: invalid_mode = "gnu89"; goto default_cxx_warn;
1349                                 case STANDARD_GNU99: invalid_mode = "gnu99"; goto default_cxx_warn;
1350
1351                                 case STANDARD_ANSI:
1352                                 case STANDARD_CXX98: c_mode = _CXX; break;
1353
1354 default_cxx_warn:
1355                                         fprintf(stderr,
1356                                                         "warning: command line option \"-std=%s\" is not valid for C++\n",
1357                                                         invalid_mode);
1358                                 case STANDARD_DEFAULT:
1359                                 case STANDARD_GNUXX98: c_mode = _CXX | _GNUC; break;
1360                         }
1361
1362 do_parsing:
1363                         c_mode |= features_on;
1364                         c_mode &= ~features_off;
1365
1366                         init_tokens();
1367                         translation_unit_t *const unit = do_parsing(in, filename);
1368
1369                         /* prints the AST even if errors occurred */
1370                         if (mode == PrintAst) {
1371                                 type_set_output(out);
1372                                 ast_set_output(out);
1373                                 print_ast(unit);
1374                         }
1375
1376                         if (error_count > 0) {
1377                                 /* parsing failed because of errors */
1378                                 fprintf(stderr, "%u error(s), %u warning(s)\n", error_count,
1379                                         warning_count);
1380                                 result = EXIT_FAILURE;
1381                                 continue;
1382                         } else if (warning_count > 0) {
1383                                 fprintf(stderr, "%u warning(s)\n", warning_count);
1384                         }
1385
1386                         if (in == preprocessed_in) {
1387                                 int pp_result = pclose(preprocessed_in);
1388                                 if (pp_result != EXIT_SUCCESS) {
1389                                         /* remove output file */
1390                                         if (out != stdout)
1391                                                 unlink(outname);
1392                                         exit(EXIT_FAILURE);
1393                                 }
1394                         }
1395
1396                         if (mode == BenchmarkParser) {
1397                                 return result;
1398                         } else if (mode == PrintFluffy) {
1399                                 write_fluffy_decls(out, unit);
1400                                 continue;
1401                         } else if (mode == PrintCaml) {
1402                                 write_caml_decls(out, unit);
1403                                 continue;
1404                         } else if (mode == PrintJna) {
1405                                 write_jna_decls(out, unit);
1406                                 continue;
1407                         }
1408
1409                         translation_unit_to_firm(unit);
1410
1411 graph_built:
1412                         if (mode == ParseOnly) {
1413                                 continue;
1414                         }
1415
1416                         if (mode == CompileDump) {
1417                                 /* find irg */
1418                                 ident    *id     = new_id_from_str(dumpfunction);
1419                                 ir_graph *irg    = NULL;
1420                                 int       n_irgs = get_irp_n_irgs();
1421                                 for (int i = 0; i < n_irgs; ++i) {
1422                                         ir_graph *tirg   = get_irp_irg(i);
1423                                         ident    *irg_id = get_entity_ident(get_irg_entity(tirg));
1424                                         if (irg_id == id) {
1425                                                 irg = tirg;
1426                                                 break;
1427                                         }
1428                                 }
1429
1430                                 if (irg == NULL) {
1431                                         fprintf(stderr, "No graph for function '%s' found\n",
1432                                                 dumpfunction);
1433                                         exit(1);
1434                                 }
1435
1436                                 dump_ir_block_graph_file(irg, out);
1437                                 fclose(out);
1438                                 exit(0);
1439                         }
1440
1441                         if (mode == CompileExportIR) {
1442                                 fclose(out);
1443                                 ir_export(outname);
1444                                 exit(0);
1445                         }
1446
1447                         gen_firm_finish(asm_out, filename, /*c_mode=*/1,
1448                                         have_const_functions);
1449                         if (asm_out != out) {
1450                                 fclose(asm_out);
1451                         }
1452                 } else if (filetype == FILETYPE_IR) {
1453                         fclose(in);
1454                         ir_import(filename);
1455                         goto graph_built;
1456                 } else if (filetype == FILETYPE_PREPROCESSED_ASSEMBLER) {
1457                         copy_file(asm_out, in);
1458                         if (in == preprocessed_in) {
1459                                 int pp_result = pclose(preprocessed_in);
1460                                 if (pp_result != EXIT_SUCCESS) {
1461                                         /* remove output in error case */
1462                                         if (out != stdout)
1463                                                 unlink(outname);
1464                                         return pp_result;
1465                                 }
1466                         }
1467                         if (asm_out != out) {
1468                                 fclose(asm_out);
1469                         }
1470                 }
1471
1472                 if (mode == Compile)
1473                         continue;
1474
1475                 /* if we're here then we have preprocessed assembly */
1476                 filename = asm_tempfile;
1477                 filetype = FILETYPE_PREPROCESSED_ASSEMBLER;
1478
1479                 /* assemble */
1480                 if (filetype == FILETYPE_PREPROCESSED_ASSEMBLER) {
1481                         char        temp[1024];
1482                         const char *filename_o;
1483                         if (mode == CompileAssemble) {
1484                                 fclose(out);
1485                                 filename_o = outname;
1486                         } else {
1487                                 FILE *tempf = make_temp_file(temp, sizeof(temp), "cco");
1488                                 fclose(tempf);
1489                                 filename_o = temp;
1490                         }
1491
1492                         assemble(filename_o, filename);
1493
1494                         size_t len = strlen(filename_o) + 1;
1495                         filename = obstack_copy(&file_obst, filename_o, len);
1496                         filetype = FILETYPE_OBJECT;
1497                 }
1498
1499                 /* ok we're done here, process next file */
1500                 file->name = filename;
1501                 file->type = filetype;
1502         }
1503
1504         if (result != EXIT_SUCCESS) {
1505                 if (out != stdout)
1506                         unlink(outname);
1507                 return result;
1508         }
1509
1510         /* link program file */
1511         if (mode == CompileAssembleLink) {
1512                 obstack_1grow(&ldflags_obst, '\0');
1513                 const char *flags = obstack_finish(&ldflags_obst);
1514
1515                 /* construct commandline */
1516                 obstack_printf(&file_obst, "%s", LINKER);
1517                 for (file_list_entry_t *entry = files; entry != NULL;
1518                                 entry = entry->next) {
1519                         if (entry->type != FILETYPE_OBJECT)
1520                                 continue;
1521
1522                         add_flag(&file_obst, "%s", entry->name);
1523                 }
1524
1525                 add_flag(&file_obst, "-o");
1526                 add_flag(&file_obst, outname);
1527                 obstack_printf(&file_obst, "%s", flags);
1528                 obstack_1grow(&file_obst, '\0');
1529
1530                 char *commandline = obstack_finish(&file_obst);
1531
1532                 if (verbose) {
1533                         puts(commandline);
1534                 }
1535                 int err = system(commandline);
1536                 if (err != EXIT_SUCCESS) {
1537                         fprintf(stderr, "linker reported an error\n");
1538                         exit(1);
1539                 }
1540         }
1541
1542         obstack_free(&cppflags_obst, NULL);
1543         obstack_free(&ldflags_obst, NULL);
1544         obstack_free(&file_obst, NULL);
1545
1546         exit_mangle();
1547         exit_ast2firm();
1548         exit_parser();
1549         exit_ast();
1550         exit_lexer();
1551         exit_typehash();
1552         exit_types();
1553         exit_tokens();
1554         exit_symbol_table();
1555         return 0;
1556 }