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 "driver/firm_timing.h"
  75 #include "driver/firm_machine.h"
  76 #include "adt/error.h"
  77 #include "adt/strutil.h"
  78 #include "wrappergen/write_fluffy.h"
  79 #include "wrappergen/write_jna.h"
  80 #include "revision.h"
  81 #include "warning.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 bool               use_builtins              = false;
 107 atomic_type_kind_t wchar_atomic_kind         = ATOMIC_TYPE_INT;
 108 unsigned           force_long_double_size    = 0;
 109 bool               enable_main_collect2_hack = false;
 110 bool               freestanding              = false;
 111
 112 /* to switch on printing of implicit casts */
 113 extern bool print_implicit_casts;
 114
 115 /* to switch on printing of parenthesis to indicate operator precedence */
 116 extern bool print_parenthesis;
 117
 118 static machine_triple_t *target_machine;
 119 static const char       *target_triple;
 120 static int               verbose;
 121 static struct obstack    cppflags_obst;
 122 static struct obstack    ldflags_obst;
 123 static struct obstack    asflags_obst;
 124 static char              dep_target[1024];
 125 static const char       *outname;
 126
 127 typedef enum lang_standard_t {
 128         STANDARD_DEFAULT, /* gnu99 (for C, GCC does gnu89) or gnu++98 (for C++) */
 129         STANDARD_ANSI,    /* c89 (for C) or c++98 (for C++) */
 130         STANDARD_C89,     /* ISO C90 (sic) */
 131         STANDARD_C90,     /* ISO C90 as modified in amendment 1 */
 132         STANDARD_C99,     /* ISO C99 */
 133         STANDARD_GNU89,   /* ISO C90 plus GNU extensions (including some C99) */
 134         STANDARD_GNU99,   /* ISO C99 plus GNU extensions */
 135         STANDARD_CXX98,   /* ISO C++ 1998 plus amendments */
 136         STANDARD_GNUXX98  /* ISO C++ 1998 plus amendments and GNU extensions */
 137 } lang_standard_t;
 138
 139 static lang_standard_t standard;
 140
 141 typedef struct file_list_entry_t file_list_entry_t;
 142
 143 typedef enum filetype_t {
 144         FILETYPE_AUTODETECT,
 145         FILETYPE_C,
 146         FILETYPE_PREPROCESSED_C,
 147         FILETYPE_CXX,
 148         FILETYPE_PREPROCESSED_CXX,
 149         FILETYPE_ASSEMBLER,
 150         FILETYPE_PREPROCESSED_ASSEMBLER,
 151         FILETYPE_OBJECT,
 152         FILETYPE_IR,
 153         FILETYPE_UNKNOWN
 154 } filetype_t;
 155
 156 struct file_list_entry_t {
 157         const char  *name; /**< filename or NULL for stdin */
 158         filetype_t   type;
 159         file_list_entry_t *next;
 160 };
 161
 162 static file_list_entry_t *temp_files;
 163
 164 static void get_output_name(char *buf, size_t buflen, const char *inputname,
 165                             const char *newext)
 166 {
 167         if (inputname == NULL)
 168                 inputname = "a";
 169
 170         char const *const last_slash = strrchr(inputname, '/');
 171         char const *const filename   =
 172                 last_slash != NULL ? last_slash + 1 : inputname;
 173         char const *const last_dot   = strrchr(filename, '.');
 174         char const *const name_end   =
 175                 last_dot != NULL ? last_dot : strchr(filename, '\0');
 176
 177         int const len = snprintf(buf, buflen, "%.*s%s",
 178                         (int)(name_end - filename), filename, newext);
 179 #ifdef _WIN32
 180         if (len < 0 || buflen <= (size_t)len)
 181 #else
 182         if (buflen <= (size_t)len)
 183 #endif
 184                 panic("filename too long");
 185 }
 186
 187 #include "gen_builtins.h"
 188
 189 static translation_unit_t *do_parsing(FILE *const in, const char *const input_name)
 190 {
 191         start_parsing();
 192
 193         if (use_builtins) {
 194                 lexer_open_buffer(builtins, sizeof(builtins)-1, "<builtin>");
 195                 parse();
 196         }
 197
 198         lexer_open_stream(in, input_name);
 199         parse();
 200
 201         translation_unit_t *unit = finish_parsing();
 202         return unit;
 203 }
 204
 205 static void lextest(FILE *in, const char *fname)
 206 {
 207         lexer_open_stream(in, fname);
 208
 209         do {
 210                 lexer_next_preprocessing_token();
 211                 print_token(stdout, &lexer_token);
 212                 putchar('\n');
 213         } while (lexer_token.type != T_EOF);
 214 }
 215
 216 static void add_flag(struct obstack *obst, const char *format, ...)
 217 {
 218         char buf[65536];
 219         va_list ap;
 220
 221         va_start(ap, format);
 222 #ifdef _WIN32
 223         int len =
 224 #endif
 225                 vsnprintf(buf, sizeof(buf), format, ap);
 226         va_end(ap);
 227
 228         obstack_1grow(obst, ' ');
 229 #ifdef _WIN32
 230         obstack_1grow(obst, '"');
 231         obstack_grow(obst, buf, len);
 232         obstack_1grow(obst, '"');
 233 #else
 234         /* escape stuff... */
 235         for (char *c = buf; *c != '\0'; ++c) {
 236                 switch(*c) {
 237                 case ' ':
 238                 case '"':
 239                 case '$':
 240                 case '&':
 241                 case '(':
 242                 case ')':
 243                 case ';':
 244                 case '<':
 245                 case '>':
 246                 case '\'':
 247                 case '\\':
 248                 case '\n':
 249                 case '\r':
 250                 case '\t':
 251                 case '`':
 252                 case '|':
 253                         obstack_1grow(obst, '\\');
 254                         /* FALLTHROUGH */
 255                 default:
 256                         obstack_1grow(obst, *c);
 257                         break;
 258                 }
 259         }
 260 #endif
 261 }
 262
 263 static const char *type_to_string(type_t *type)
 264 {
 265         assert(type->kind == TYPE_ATOMIC);
 266         return get_atomic_kind_name(type->atomic.akind);
 267 }
 268
 269 static FILE *preprocess(const char *fname, filetype_t filetype)
 270 {
 271         static const char *common_flags = NULL;
 272
 273         if (common_flags == NULL) {
 274                 obstack_1grow(&cppflags_obst, '\0');
 275                 const char *flags = obstack_finish(&cppflags_obst);
 276
 277                 /* setup default defines */
 278                 add_flag(&cppflags_obst, "-U__WCHAR_TYPE__");
 279                 add_flag(&cppflags_obst, "-D__WCHAR_TYPE__=%s", type_to_string(type_wchar_t));
 280                 add_flag(&cppflags_obst, "-U__SIZE_TYPE__");
 281                 add_flag(&cppflags_obst, "-D__SIZE_TYPE__=%s", type_to_string(type_size_t));
 282
 283                 add_flag(&cppflags_obst, "-U__VERSION__");
 284                 add_flag(&cppflags_obst, "-D__VERSION__=\"%s\"", cparser_REVISION);
 285
 286                 if (flags[0] != '\0') {
 287                         size_t len = strlen(flags);
 288                         obstack_1grow(&cppflags_obst, ' ');
 289                         obstack_grow(&cppflags_obst, flags, len);
 290                 }
 291                 obstack_1grow(&cppflags_obst, '\0');
 292                 common_flags = obstack_finish(&cppflags_obst);
 293         }
 294
 295         assert(obstack_object_size(&cppflags_obst) == 0);
 296
 297         const char *preprocessor = getenv("CPARSER_PP");
 298         if (preprocessor != NULL) {
 299                 obstack_printf(&cppflags_obst, "%s ", preprocessor);
 300         } else {
 301                 if (target_triple != NULL)
 302                         obstack_printf(&cppflags_obst, "%s-", target_triple);
 303                 obstack_printf(&cppflags_obst, PREPROCESSOR);
 304         }
 305
 306         switch (filetype) {
 307         case FILETYPE_C:
 308                 add_flag(&cppflags_obst, "-std=c99");
 309                 break;
 310         case FILETYPE_CXX:
 311                 add_flag(&cppflags_obst, "-std=c++98");
 312                 break;
 313         case FILETYPE_ASSEMBLER:
 314                 add_flag(&cppflags_obst, "-x");
 315                 add_flag(&cppflags_obst, "assembler-with-cpp");
 316                 break;
 317         default:
 318                 break;
 319         }
 320         obstack_printf(&cppflags_obst, "%s", common_flags);
 321
 322         /* handle dependency generation */
 323         if (dep_target[0] != '\0') {
 324                 add_flag(&cppflags_obst, "-MF");
 325                 add_flag(&cppflags_obst, dep_target);
 326                 if (outname != NULL) {
 327                                 add_flag(&cppflags_obst, "-MQ");
 328                                 add_flag(&cppflags_obst, outname);
 329                 }
 330         }
 331         add_flag(&cppflags_obst, fname);
 332         obstack_1grow(&cppflags_obst, '\0');
 333
 334         char *commandline = obstack_finish(&cppflags_obst);
 335         if (verbose) {
 336                 puts(commandline);
 337         }
 338         FILE *f = popen(commandline, "r");
 339         if (f == NULL) {
 340                 fprintf(stderr, "invoking preprocessor failed\n");
 341                 exit(EXIT_FAILURE);
 342         }
 343         /* we don't really need that anymore */
 344         obstack_free(&cppflags_obst, commandline);
 345
 346         return f;
 347 }
 348
 349 static void assemble(const char *out, const char *in)
 350 {
 351         obstack_1grow(&asflags_obst, '\0');
 352         const char *flags = obstack_finish(&asflags_obst);
 353
 354         const char *assembler = getenv("CPARSER_AS");
 355         if (assembler != NULL) {
 356                 obstack_printf(&asflags_obst, "%s", assembler);
 357         } else {
 358                 if (target_triple != NULL)
 359                         obstack_printf(&asflags_obst, "%s-", target_triple);
 360                 obstack_printf(&asflags_obst, "%s", ASSEMBLER);
 361         }
 362         if (flags[0] != '\0')
 363                 obstack_printf(&asflags_obst, " %s", flags);
 364
 365         obstack_printf(&asflags_obst, " %s -o %s", in, out);
 366         obstack_1grow(&asflags_obst, '\0');
 367
 368         char *commandline = obstack_finish(&asflags_obst);
 369         if (verbose) {
 370                 puts(commandline);
 371         }
 372         int err = system(commandline);
 373         if (err != EXIT_SUCCESS) {
 374                 fprintf(stderr, "assembler reported an error\n");
 375                 exit(EXIT_FAILURE);
 376         }
 377         obstack_free(&asflags_obst, commandline);
 378 }
 379
 380 static void print_file_name(const char *file)
 381 {
 382         add_flag(&ldflags_obst, "-print-file-name=%s", file);
 383
 384         obstack_1grow(&ldflags_obst, '\0');
 385         const char *flags = obstack_finish(&ldflags_obst);
 386
 387         /* construct commandline */
 388         const char *linker = getenv("CPARSER_LINK");
 389         if (linker != NULL) {
 390                 obstack_printf(&ldflags_obst, "%s ", linker);
 391         } else {
 392                 if (target_triple != NULL)
 393                         obstack_printf(&ldflags_obst, "%s-", target_triple);
 394                 obstack_printf(&ldflags_obst, "%s ", LINKER);
 395         }
 396         obstack_printf(&ldflags_obst, "%s ", linker);
 397         obstack_printf(&ldflags_obst, "%s", flags);
 398         obstack_1grow(&ldflags_obst, '\0');
 399
 400         char *commandline = obstack_finish(&ldflags_obst);
 401         if (verbose) {
 402                 puts(commandline);
 403         }
 404         int err = system(commandline);
 405         if (err != EXIT_SUCCESS) {
 406                 fprintf(stderr, "linker reported an error\n");
 407                 exit(EXIT_FAILURE);
 408         }
 409         obstack_free(&ldflags_obst, commandline);
 410 }
 411
 412 static const char *try_dir(const char *dir)
 413 {
 414         if (dir == NULL)
 415                 return dir;
 416         if (access(dir, R_OK | W_OK | X_OK) == 0)
 417                 return dir;
 418         return NULL;
 419 }
 420
 421 static const char *get_tempdir(void)
 422 {
 423         static const char *tmpdir = NULL;
 424
 425         if (tmpdir != NULL)
 426                 return tmpdir;
 427
 428         if (tmpdir == NULL)
 429                 tmpdir = try_dir(getenv("TMPDIR"));
 430         if (tmpdir == NULL)
 431                 tmpdir = try_dir(getenv("TMP"));
 432         if (tmpdir == NULL)
 433                 tmpdir = try_dir(getenv("TEMP"));
 434
 435 #ifdef P_tmpdir
 436         if (tmpdir == NULL)
 437                 tmpdir = try_dir(P_tmpdir);
 438 #endif
 439
 440         if (tmpdir == NULL)
 441                 tmpdir = try_dir("/var/tmp");
 442         if (tmpdir == NULL)
 443                 tmpdir = try_dir("/usr/tmp");
 444         if (tmpdir == NULL)
 445                 tmpdir = try_dir("/tmp");
 446
 447         if (tmpdir == NULL)
 448                 tmpdir = ".";
 449
 450         return tmpdir;
 451 }
 452
 453 #ifndef HAVE_MKSTEMP
 454 /* cheap and nasty mkstemp replacement */
 455 static int mkstemp(char *templ)
 456 {
 457         mktemp(templ);
 458         return open(templ, O_RDWR|O_CREAT|O_EXCL|O_BINARY, 0600);
 459 }
 460 #endif
 461
 462 /**
 463  * an own version of tmpnam, which: writes in a buffer, emits no warnings
 464  * during linking (like glibc/gnu ld do for tmpnam)...
 465  */
 466 static FILE *make_temp_file(char *buffer, size_t buflen, const char *prefix)
 467 {
 468         const char *tempdir = get_tempdir();
 469
 470         snprintf(buffer, buflen, "%s/%sXXXXXX", tempdir, prefix);
 471
 472         int fd = mkstemp(buffer);
 473         if (fd == -1) {
 474                 fprintf(stderr, "couldn't create temporary file: %s\n",
 475                         strerror(errno));
 476                 exit(EXIT_FAILURE);
 477         }
 478         FILE *out = fdopen(fd, "w");
 479         if (out == NULL) {
 480                 fprintf(stderr, "couldn't create temporary file FILE*\n");
 481                 exit(EXIT_FAILURE);
 482         }
 483
 484         file_list_entry_t *entry = xmalloc(sizeof(*entry));
 485         memset(entry, 0, sizeof(*entry));
 486
 487         size_t  name_len = strlen(buffer) + 1;
 488         char   *name     = malloc(name_len);
 489         memcpy(name, buffer, name_len);
 490         entry->name      = name;
 491
 492         entry->next = temp_files;
 493         temp_files  = entry;
 494
 495         return out;
 496 }
 497
 498 static void free_temp_files(void)
 499 {
 500         file_list_entry_t *entry = temp_files;
 501         file_list_entry_t *next;
 502         for ( ; entry != NULL; entry = next) {
 503                 next = entry->next;
 504
 505                 unlink(entry->name);
 506                 free((char*) entry->name);
 507                 free(entry);
 508         }
 509         temp_files = NULL;
 510 }
 511
 512 typedef enum compile_mode_t {
 513         BenchmarkParser,
 514         PreprocessOnly,
 515         ParseOnly,
 516         Compile,
 517         CompileDump,
 518         CompileExportIR,
 519         CompileAssemble,
 520         CompileAssembleLink,
 521         LexTest,
 522         PrintAst,
 523         PrintFluffy,
 524         PrintJna
 525 } compile_mode_t;
 526
 527 static void usage(const char *argv0)
 528 {
 529         fprintf(stderr, "Usage %s [options] input [-o output]\n", argv0);
 530 }
 531
 532 static void print_cparser_version(void)
 533 {
 534         printf("cparser (%s) using libFirm (%u.%u",
 535                cparser_REVISION, ir_get_version_major(),
 536                ir_get_version_minor());
 537
 538         const char *revision = ir_get_version_revision();
 539         if (revision[0] != 0) {
 540                 putchar(' ');
 541                 fputs(revision, stdout);
 542         }
 543
 544         const char *build = ir_get_version_build();
 545         if (build[0] != 0) {
 546                 putchar(' ');
 547                 fputs(build, stdout);
 548         }
 549         puts(")");
 550         puts("This is free software; see the source for copying conditions.  There is NO\n"
 551              "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n");
 552 }
 553
 554 static void print_help(const char *argv0)
 555 {
 556         usage(argv0);
 557         puts("");
 558         puts("\t-fhelp     Display help about firm optimisation options");
 559         puts("\t-bhelp     Display help about firm backend options");
 560         puts("A big number of gcc flags is also supported");
 561 }
 562
 563 static void set_be_option(const char *arg)
 564 {
 565         int res = be_parse_arg(arg);
 566         (void) res;
 567         assert(res);
 568 }
 569
 570 static void copy_file(FILE *dest, FILE *input)
 571 {
 572         char buf[16384];
 573
 574         while (!feof(input) && !ferror(dest)) {
 575                 size_t read = fread(buf, 1, sizeof(buf), input);
 576                 if (fwrite(buf, 1, read, dest) != read) {
 577                         perror("couldn't write output");
 578                 }
 579         }
 580 }
 581
 582 static FILE *open_file(const char *filename)
 583 {
 584         if (streq(filename, "-")) {
 585                 return stdin;
 586         }
 587
 588         FILE *in = fopen(filename, "r");
 589         if (in == NULL) {
 590                 fprintf(stderr, "Couldn't open '%s': %s\n", filename,
 591                                 strerror(errno));
 592                 exit(EXIT_FAILURE);
 593         }
 594
 595         return in;
 596 }
 597
 598 static filetype_t get_filetype_from_string(const char *string)
 599 {
 600         if (streq(string, "c") || streq(string, "c-header"))
 601                 return FILETYPE_C;
 602         if (streq(string, "c++") || streq(string, "c++-header"))
 603                 return FILETYPE_CXX;
 604         if (streq(string, "assembler"))
 605                 return FILETYPE_PREPROCESSED_ASSEMBLER;
 606         if (streq(string, "assembler-with-cpp"))
 607                 return FILETYPE_ASSEMBLER;
 608         if (streq(string, "none"))
 609                 return FILETYPE_AUTODETECT;
 610
 611         return FILETYPE_UNKNOWN;
 612 }
 613
 614 static bool init_os_support(void)
 615 {
 616         const char *os = target_machine->operating_system;
 617         wchar_atomic_kind         = ATOMIC_TYPE_INT;
 618         force_long_double_size    = 0;
 619         enable_main_collect2_hack = false;
 620
 621         if (strstr(os, "linux") != NULL || strstr(os, "bsd") != NULL
 622                         || streq(os, "solaris")) {
 623                 set_create_ld_ident(create_name_linux_elf);
 624         } else if (streq(os, "darwin")) {
 625                 force_long_double_size = 16;
 626                 set_create_ld_ident(create_name_macho);
 627         } else if (strstr(os, "mingw") != NULL || streq(os, "win32")) {
 628                 wchar_atomic_kind         = ATOMIC_TYPE_USHORT;
 629                 enable_main_collect2_hack = true;
 630                 set_create_ld_ident(create_name_win32);
 631         } else {
 632                 return false;
 633         }
 634
 635         return true;
 636 }
 637
 638 static bool parse_target_triple(const char *arg)
 639 {
 640         machine_triple_t *triple = firm_parse_machine_triple(arg);
 641         if (triple == NULL) {
 642                 fprintf(stderr, "Target-triple is not in the form 'cpu_type-manufacturer-operating_system'\n");
 643                 return false;
 644         }
 645         target_machine = triple;
 646         return true;
 647 }
 648
 649 static void setup_target_machine(void)
 650 {
 651         if (!setup_firm_for_machine(target_machine))
 652                 exit(1);
 653         init_os_support();
 654 }
 655
 656 int main(int argc, char **argv)
 657 {
 658         firm_early_init();
 659
 660         const char        *dumpfunction         = NULL;
 661         const char        *print_file_name_file = NULL;
 662         compile_mode_t     mode                 = CompileAssembleLink;
 663         int                opt_level            = 1;
 664         int                result               = EXIT_SUCCESS;
 665         char               cpu_arch[16]         = "ia32";
 666         file_list_entry_t *files                = NULL;
 667         file_list_entry_t *last_file            = NULL;
 668         bool               construct_dep_target = false;
 669         bool               do_timing            = false;
 670         struct obstack     file_obst;
 671
 672         atexit(free_temp_files);
 673
 674         /* hack for now... */
 675         if (strstr(argv[0], "pptest") != NULL) {
 676                 extern int pptest_main(int argc, char **argv);
 677                 return pptest_main(argc, argv);
 678         }
 679
 680         obstack_init(&cppflags_obst);
 681         obstack_init(&ldflags_obst);
 682         obstack_init(&asflags_obst);
 683         obstack_init(&file_obst);
 684
 685 #define GET_ARG_AFTER(def, args)                                             \
 686         def = &arg[sizeof(args)-1];                                              \
 687         if (def[0] == '\0') {                                                     \
 688                 ++i;                                                                 \
 689                 if (i >= argc) {                                                      \
 690                         fprintf(stderr, "error: expected argument after '" args "'\n");  \
 691                         argument_errors = true;                                          \
 692                         break;                                                           \
 693                 }                                                                    \
 694                 def = argv[i];                                                       \
 695                 if (def[0] == '-' && def[1] != '\0') {                                \
 696                         fprintf(stderr, "error: expected argument after '" args "'\n");  \
 697                         argument_errors = true;                                          \
 698                         continue;                                                        \
 699                 }                                                                    \
 700         }
 701
 702 #define SINGLE_OPTION(ch) (option[0] == (ch) && option[1] == '\0')
 703
 704         /* early options parsing (find out optimisation level and OS) */
 705         for (int i = 1; i < argc; ++i) {
 706                 const char *arg = argv[i];
 707                 if (arg[0] != '-')
 708                         continue;
 709
 710                 const char *option = &arg[1];
 711                 if (option[0] == 'O') {
 712                         sscanf(&option[1], "%d", &opt_level);
 713                 }
 714         }
 715
 716         const char *target = getenv("TARGET");
 717         if (target != NULL)
 718                 parse_target_triple(target);
 719         if (target_machine == NULL) {
 720                 target_machine = firm_get_host_machine();
 721         }
 722         choose_optimization_pack(opt_level);
 723         setup_target_machine();
 724
 725         /* parse rest of options */
 726         standard                   = STANDARD_DEFAULT;
 727         unsigned   features_on     = 0;
 728         unsigned   features_off    = 0;
 729         filetype_t forced_filetype = FILETYPE_AUTODETECT;
 730         bool       help_displayed  = false;
 731         bool       argument_errors = false;
 732         for (int i = 1; i < argc; ++i) {
 733                 const char *arg = argv[i];
 734                 if (arg[0] == '-' && arg[1] != '\0') {
 735                         /* an option */
 736                         const char *option = &arg[1];
 737                         if (option[0] == 'o') {
 738                                 GET_ARG_AFTER(outname, "-o");
 739                         } else if (option[0] == 'g') {
 740                                 set_be_option("debuginfo=stabs");
 741                                 set_be_option("omitfp=no");
 742                                 set_be_option("ia32-nooptcc=yes");
 743                         } else if (SINGLE_OPTION('c')) {
 744                                 mode = CompileAssemble;
 745                         } else if (SINGLE_OPTION('E')) {
 746                                 mode = PreprocessOnly;
 747                         } else if (SINGLE_OPTION('S')) {
 748                                 mode = Compile;
 749                         } else if (option[0] == 'O') {
 750                                 continue;
 751                         } else if (option[0] == 'I') {
 752                                 const char *opt;
 753                                 GET_ARG_AFTER(opt, "-I");
 754                                 add_flag(&cppflags_obst, "-I%s", opt);
 755                         } else if (option[0] == 'D') {
 756                                 const char *opt;
 757                                 GET_ARG_AFTER(opt, "-D");
 758                                 add_flag(&cppflags_obst, "-D%s", opt);
 759                         } else if (option[0] == 'U') {
 760                                 const char *opt;
 761                                 GET_ARG_AFTER(opt, "-U");
 762                                 add_flag(&cppflags_obst, "-U%s", opt);
 763                         } else if (option[0] == 'l') {
 764                                 const char *opt;
 765                                 GET_ARG_AFTER(opt, "-l");
 766                                 add_flag(&ldflags_obst, "-l%s", opt);
 767                         } else if (option[0] == 'L') {
 768                                 const char *opt;
 769                                 GET_ARG_AFTER(opt, "-L");
 770                                 add_flag(&ldflags_obst, "-L%s", opt);
 771                         } else if (SINGLE_OPTION('v')) {
 772                                 verbose = 1;
 773                         } else if (SINGLE_OPTION('w')) {
 774                                 memset(&warning, 0, sizeof(warning));
 775                         } else if (option[0] == 'x') {
 776                                 const char *opt;
 777                                 GET_ARG_AFTER(opt, "-x");
 778                                 forced_filetype = get_filetype_from_string(opt);
 779                                 if (forced_filetype == FILETYPE_UNKNOWN) {
 780                                         fprintf(stderr, "Unknown language '%s'\n", opt);
 781                                         argument_errors = true;
 782                                 }
 783                         } else if (streq(option, "M")) {
 784                                 mode = PreprocessOnly;
 785                                 add_flag(&cppflags_obst, "-M");
 786                         } else if (streq(option, "MMD") ||
 787                                    streq(option, "MD")) {
 788                             construct_dep_target = true;
 789                                 add_flag(&cppflags_obst, "-%s", option);
 790                         } else if (streq(option, "MM")  ||
 791                                    streq(option, "MP")) {
 792                                 add_flag(&cppflags_obst, "-%s", option);
 793                         } else if (streq(option, "MT") ||
 794                                    streq(option, "MQ") ||
 795                                    streq(option, "MF")) {
 796                                 const char *opt;
 797                                 GET_ARG_AFTER(opt, "-MT");
 798                                 add_flag(&cppflags_obst, "-%s", option);
 799                                 add_flag(&cppflags_obst, "%s", opt);
 800                         } else if (streq(option, "include")) {
 801                                 const char *opt;
 802                                 GET_ARG_AFTER(opt, "-include");
 803                                 add_flag(&cppflags_obst, "-include");
 804                                 add_flag(&cppflags_obst, "%s", opt);
 805                         } else if (streq(option, "isystem")) {
 806                                 const char *opt;
 807                                 GET_ARG_AFTER(opt, "-isystem");
 808                                 add_flag(&cppflags_obst, "-isystem");
 809                                 add_flag(&cppflags_obst, "%s", opt);
 810 #if defined(linux) || defined(__linux) || defined(__linux__) || defined(__CYGWIN__)
 811                         } else if (streq(option, "pthread")) {
 812                                 /* set flags for the preprocessor */
 813                                 add_flag(&cppflags_obst, "-D_REENTRANT");
 814                                 /* set flags for the linker */
 815                                 add_flag(&ldflags_obst, "-lpthread");
 816 #endif
 817                         } else if (streq(option, "nostdinc")
 818                                         || streq(option, "trigraphs")) {
 819                                 /* pass these through to the preprocessor */
 820                                 add_flag(&cppflags_obst, "%s", arg);
 821                         } else if (streq(option, "pipe")) {
 822                                 /* here for gcc compatibility */
 823                         } else if (streq(option, "static")) {
 824                                 add_flag(&ldflags_obst, "-static");
 825                         } else if (streq(option, "shared")) {
 826                                 add_flag(&ldflags_obst, "-shared");
 827                         } else if (option[0] == 'f') {
 828                                 char const *orig_opt;
 829                                 GET_ARG_AFTER(orig_opt, "-f");
 830
 831                                 if (strstart(orig_opt, "input-charset=")) {
 832                                         char const* const encoding = strchr(orig_opt, '=') + 1;
 833                                         select_input_encoding(encoding);
 834                                 } else if (strstart(orig_opt, "align-loops=") ||
 835                                            strstart(orig_opt, "align-jumps=") ||
 836                                            strstart(orig_opt, "align-functions=")) {
 837                                         fprintf(stderr, "ignoring gcc option '-f%s'\n", orig_opt);
 838                                 } else if (strstart(orig_opt, "message-length=")) {
 839                                         /* ignore: would only affect error message format */
 840                                 } else {
 841                                         /* -f options which have an -fno- variant */
 842                                         char const *opt         = orig_opt;
 843                                         bool        truth_value = true;
 844                                         if (opt[0] == 'n' && opt[1] == 'o' && opt[2] == '-') {
 845                                                 truth_value = false;
 846                                                 opt += 3;
 847                                         }
 848
 849                                         if (streq(opt, "builtins")) {
 850                                                 use_builtins = truth_value;
 851                                         } else if (streq(opt, "dollars-in-identifiers")) {
 852                                                 allow_dollar_in_symbol = truth_value;
 853                                         } else if (streq(opt, "omit-frame-pointer")) {
 854                                                 set_be_option(truth_value ? "omitfp" : "omitfp=no");
 855                                         } else if (streq(opt, "short-wchar")) {
 856                                                 wchar_atomic_kind = truth_value ? ATOMIC_TYPE_USHORT
 857                                                         : ATOMIC_TYPE_INT;
 858                                         } else if (streq(opt, "signed-char")) {
 859                                                 char_is_signed = truth_value;
 860                                         } else if (streq(opt, "strength-reduce")) {
 861                                                 firm_option(truth_value ? "strength-red" : "no-strength-red");
 862                                         } else if (streq(opt, "syntax-only")) {
 863                                                 mode = truth_value ? ParseOnly : CompileAssembleLink;
 864                                         } else if (streq(opt, "unsigned-char")) {
 865                                                 char_is_signed = !truth_value;
 866                                         } else if (streq(opt, "freestanding")) {
 867                                                 freestanding = truth_value;
 868                                         } else if (streq(opt, "hosted")) {
 869                                                 freestanding = !truth_value;
 870                                         } else if (truth_value == false &&
 871                                                    streq(opt, "asynchronous-unwind-tables")) {
 872                                             /* nothing todo, a gcc feature which we don't support
 873                                              * anyway was deactivated */
 874                                         } else if (streq(orig_opt, "verbose-asm")) {
 875                                                 /* ignore: we always print verbose assembler */
 876                                         } else if (streq(opt, "fast-math")               ||
 877                                                    streq(opt, "jump-tables")             ||
 878                                                    streq(opt, "expensive-optimizations") ||
 879                                                    streq(opt, "common")                  ||
 880                                                    streq(opt, "optimize-sibling-calls")  ||
 881                                                    streq(opt, "align-loops")             ||
 882                                                    streq(opt, "align-jumps")             ||
 883                                                    streq(opt, "align-functions")         ||
 884                                                    streq(opt, "PIC")) {
 885                                                 fprintf(stderr, "ignoring gcc option '-f%s'\n", orig_opt);
 886                                         } else {
 887                                                 int res = firm_option(orig_opt);
 888                                                 if (res == 0) {
 889                                                         fprintf(stderr, "error: unknown Firm option '-f%s'\n",
 890                                                                 orig_opt);
 891                                                         argument_errors = true;
 892                                                         continue;
 893                                                 } else if (res == -1) {
 894                                                         help_displayed = true;
 895                                                 }
 896                                         }
 897                                 }
 898                         } else if (option[0] == 'b') {
 899                                 const char *opt;
 900                                 GET_ARG_AFTER(opt, "-b");
 901                                 int res = be_parse_arg(opt);
 902                                 if (res == 0) {
 903                                         fprintf(stderr, "error: unknown Firm backend option '-b %s'\n",
 904                                                 opt);
 905                                         argument_errors = true;
 906                                 } else if (res == -1) {
 907                                         help_displayed = true;
 908                                 } else if (strstart(opt, "isa=")) {
 909                                         strncpy(cpu_arch, opt, sizeof(cpu_arch));
 910                                 }
 911                         } else if (option[0] == 'W') {
 912                                 if (option[1] == '\0') {
 913                                         /* ignore -W, our defaults are already quite verbose */
 914                                 } else if (strstart(option + 1, "p,")) {
 915                                         // pass options directly to the preprocessor
 916                                         const char *opt;
 917                                         GET_ARG_AFTER(opt, "-Wp,");
 918                                         add_flag(&cppflags_obst, "-Wp,%s", opt);
 919                                 } else if (strstart(option + 1, "l,")) {
 920                                         // pass options directly to the linker
 921                                         const char *opt;
 922                                         GET_ARG_AFTER(opt, "-Wl,");
 923                                         add_flag(&ldflags_obst, "-Wl,%s", opt);
 924                                 } else if (streq(option + 1, "no-trigraphs")
 925                                                         || streq(option + 1, "undef")) {
 926                                         add_flag(&cppflags_obst, "%s", arg);
 927                                 } else {
 928                                         set_warning_opt(&option[1]);
 929                                 }
 930                         } else if (option[0] == 'm') {
 931                                 /* -m options */
 932                                 const char *opt;
 933                                 char arch_opt[64];
 934
 935                                 GET_ARG_AFTER(opt, "-m");
 936                                 if (strstart(opt, "target=")) {
 937                                         GET_ARG_AFTER(opt, "-mtarget=");
 938                                         if (!parse_target_triple(opt)) {
 939                                                 argument_errors = true;
 940                                         } else {
 941                                                 setup_target_machine();
 942                                                 target_triple = opt;
 943                                         }
 944                                 } else if (strstart(opt, "triple=")) {
 945                                         GET_ARG_AFTER(opt, "-mtriple=");
 946                                         if (!parse_target_triple(opt)) {
 947                                                 argument_errors = true;
 948                                         } else {
 949                                                 setup_target_machine();
 950                                                 target_triple = opt;
 951                                         }
 952                                 } else if (strstart(opt, "arch=")) {
 953                                         GET_ARG_AFTER(opt, "-march=");
 954                                         snprintf(arch_opt, sizeof(arch_opt), "%s-arch=%s", cpu_arch, opt);
 955                                         int res = be_parse_arg(arch_opt);
 956                                         if (res == 0) {
 957                                                 fprintf(stderr, "Unknown architecture '%s'\n", arch_opt);
 958                                                 argument_errors = true;
 959                                         } else {
 960                                                 snprintf(arch_opt, sizeof(arch_opt), "%s-opt=%s", cpu_arch, opt);
 961                                                 int res = be_parse_arg(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 = be_parse_arg(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 = be_parse_arg(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 = be_parse_arg(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 = be_parse_arg(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 if (strstart(opt, "regparm=")) {
1006                                         fprintf(stderr, "error: regparm convention not supported yet\n");
1007                                         argument_errors = true;
1008                                 } else if (streq(opt, "soft-float")) {
1009                                         fprintf(stderr, "error: software floatingpoint not supported yet\n");
1010                                         argument_errors = true;
1011                                 } else {
1012                                         long int value = strtol(opt, NULL, 10);
1013                                         if (value == 0) {
1014                                                 fprintf(stderr, "error: wrong option '-m %s'\n",  opt);
1015                                                 argument_errors = true;
1016                                         } else if (value != 16 && value != 32 && value != 64) {
1017                                                 fprintf(stderr, "error: option -m supports only 16, 32 or 64\n");
1018                                                 argument_errors = true;
1019                                         } else {
1020                                                 machine_size = (unsigned int)value;
1021                                                 add_flag(&asflags_obst, "-m%u", machine_size);
1022                                                 add_flag(&ldflags_obst, "-m%u", machine_size);
1023                                         }
1024                                 }
1025                         } else if (streq(option, "pg")) {
1026                                 set_be_option("gprof");
1027                                 add_flag(&ldflags_obst, "-pg");
1028                         } else if (streq(option, "pedantic") ||
1029                                    streq(option, "ansi")) {
1030                                 fprintf(stderr, "warning: ignoring gcc option '%s'\n", arg);
1031                         } else if (streq(option, "shared")) {
1032                                 add_flag(&ldflags_obst, "-shared");
1033                         } else if (strstart(option, "std=")) {
1034                                 const char *const o = &option[4];
1035                                 standard =
1036                                         streq(o, "c++")            ? STANDARD_CXX98   :
1037                                         streq(o, "c++98")          ? STANDARD_CXX98   :
1038                                         streq(o, "c89")            ? STANDARD_C89     :
1039                                         streq(o, "c99")            ? STANDARD_C99     :
1040                                         streq(o, "c9x")            ? STANDARD_C99     : // deprecated
1041                                         streq(o, "gnu++98")        ? STANDARD_GNUXX98 :
1042                                         streq(o, "gnu89")          ? STANDARD_GNU89   :
1043                                         streq(o, "gnu99")          ? STANDARD_GNU99   :
1044                                         streq(o, "gnu9x")          ? STANDARD_GNU99   : // deprecated
1045                                         streq(o, "iso9899:1990")   ? STANDARD_C89     :
1046                                         streq(o, "iso9899:199409") ? STANDARD_C90     :
1047                                         streq(o, "iso9899:1999")   ? STANDARD_C99     :
1048                                         streq(o, "iso9899:199x")   ? STANDARD_C99     : // deprecated
1049                                         (fprintf(stderr, "warning: ignoring gcc option '%s'\n", arg), standard);
1050                         } else if (streq(option, "version")) {
1051                                 print_cparser_version();
1052                         } else if (strstart(option, "print-file-name=")) {
1053                                 GET_ARG_AFTER(print_file_name_file, "-print-file-name=");
1054                         } else if (option[0] == '-') {
1055                                 /* double dash option */
1056                                 ++option;
1057                                 if (streq(option, "gcc")) {
1058                                         features_on  |=  _GNUC;
1059                                         features_off &= ~_GNUC;
1060                                 } else if (streq(option, "no-gcc")) {
1061                                         features_on  &= ~_GNUC;
1062                                         features_off |=  _GNUC;
1063                                 } else if (streq(option, "ms")) {
1064                                         features_on  |=  _MS;
1065                                         features_off &= ~_MS;
1066                                 } else if (streq(option, "no-ms")) {
1067                                         features_on  &= ~_MS;
1068                                         features_off |=  _MS;
1069                                 } else if (streq(option, "strict")) {
1070                                         strict_mode = true;
1071                                 } else if (streq(option, "lextest")) {
1072                                         mode = LexTest;
1073                                 } else if (streq(option, "benchmark")) {
1074                                         mode = BenchmarkParser;
1075                                 } else if (streq(option, "print-ast")) {
1076                                         mode = PrintAst;
1077                                 } else if (streq(option, "print-implicit-cast")) {
1078                                         print_implicit_casts = true;
1079                                 } else if (streq(option, "print-parenthesis")) {
1080                                         print_parenthesis = true;
1081                                 } else if (streq(option, "print-fluffy")) {
1082                                         mode = PrintFluffy;
1083                                 } else if (streq(option, "print-jna")) {
1084                                         mode = PrintJna;
1085                                 } else if (streq(option, "jna-limit")) {
1086                                         ++i;
1087                                         if (i >= argc) {
1088                                                 fprintf(stderr, "error: "
1089                                                         "expected argument after '--jna-limit'\n");
1090                                                 argument_errors = true;
1091                                                 break;
1092                                         }
1093                                         jna_limit_output(argv[i]);
1094                                 } else if (streq(option, "jna-libname")) {
1095                                         ++i;
1096                                         if (i >= argc) {
1097                                                 fprintf(stderr, "error: "
1098                                                         "expected argument after '--jna-libname'\n");
1099                                                 argument_errors = true;
1100                                                 break;
1101                                         }
1102                                         jna_set_libname(argv[i]);
1103                                 } else if (streq(option, "time")) {
1104                                         do_timing = true;
1105                                 } else if (streq(option, "version")) {
1106                                         print_cparser_version();
1107                                         return EXIT_SUCCESS;
1108                                 } else if (streq(option, "help")) {
1109                                         print_help(argv[0]);
1110                                         help_displayed = true;
1111                                 } else if (streq(option, "dump-function")) {
1112                                         ++i;
1113                                         if (i >= argc) {
1114                                                 fprintf(stderr, "error: "
1115                                                         "expected argument after '--dump-function'\n");
1116                                                 argument_errors = true;
1117                                                 break;
1118                                         }
1119                                         dumpfunction = argv[i];
1120                                         mode         = CompileDump;
1121                                 } else if (streq(option, "export-ir")) {
1122                                         mode = CompileExportIR;
1123                                 } else {
1124                                         fprintf(stderr, "error: unknown argument '%s'\n", arg);
1125                                         argument_errors = true;
1126                                 }
1127                         } else {
1128                                 fprintf(stderr, "error: unknown argument '%s'\n", arg);
1129                                 argument_errors = true;
1130                         }
1131                 } else {
1132                         filetype_t type = forced_filetype;
1133                         if (type == FILETYPE_AUTODETECT) {
1134                                 if (streq(arg, "-")) {
1135                                         /* - implicitly means C source file */
1136                                         type = FILETYPE_C;
1137                                 } else {
1138                                         const char *suffix = strrchr(arg, '.');
1139                                         /* Ensure there is at least one char before the suffix */
1140                                         if (suffix != NULL && suffix != arg) {
1141                                                 ++suffix;
1142                                                 type =
1143                                                         streq(suffix, "S")   ? FILETYPE_ASSEMBLER              :
1144                                                         streq(suffix, "a")   ? FILETYPE_OBJECT                 :
1145                                                         streq(suffix, "c")   ? FILETYPE_C                      :
1146                                                         streq(suffix, "i")   ? FILETYPE_PREPROCESSED_C         :
1147                                                         streq(suffix, "C")   ? FILETYPE_CXX                    :
1148                                                         streq(suffix, "cc")  ? FILETYPE_CXX                    :
1149                                                         streq(suffix, "cp")  ? FILETYPE_CXX                    :
1150                                                         streq(suffix, "cpp") ? FILETYPE_CXX                    :
1151                                                         streq(suffix, "CPP") ? FILETYPE_CXX                    :
1152                                                         streq(suffix, "cxx") ? FILETYPE_CXX                    :
1153                                                         streq(suffix, "c++") ? FILETYPE_CXX                    :
1154                                                         streq(suffix, "ii")  ? FILETYPE_PREPROCESSED_CXX       :
1155                                                         streq(suffix, "h")   ? FILETYPE_C                      :
1156                                                         streq(suffix, "ir")  ? FILETYPE_IR                     :
1157                                                         streq(suffix, "o")   ? FILETYPE_OBJECT                 :
1158                                                         streq(suffix, "s")   ? FILETYPE_PREPROCESSED_ASSEMBLER :
1159                                                         streq(suffix, "so")  ? FILETYPE_OBJECT                 :
1160                                                         FILETYPE_OBJECT; /* gcc behavior: unknown file extension means object file */
1161                                         }
1162                                 }
1163                         }
1164
1165                         file_list_entry_t *entry
1166                                 = obstack_alloc(&file_obst, sizeof(entry[0]));
1167                         memset(entry, 0, sizeof(entry[0]));
1168                         entry->name = arg;
1169                         entry->type = type;
1170
1171                         if (last_file != NULL) {
1172                                 last_file->next = entry;
1173                         } else {
1174                                 files = entry;
1175                         }
1176                         last_file = entry;
1177                 }
1178         }
1179
1180         if (help_displayed) {
1181                 return !argument_errors;
1182         }
1183
1184         if (print_file_name_file != NULL) {
1185                 print_file_name(print_file_name_file);
1186                 return EXIT_SUCCESS;
1187         }
1188         if (files == NULL) {
1189                 fprintf(stderr, "error: no input files specified\n");
1190                 argument_errors = true;
1191         }
1192
1193         if (argument_errors) {
1194                 usage(argv[0]);
1195                 return EXIT_FAILURE;
1196         }
1197
1198         /* set the c_mode here, types depends on it */
1199         c_mode |= features_on;
1200         c_mode &= ~features_off;
1201
1202         gen_firm_init();
1203         byte_order_big_endian = be_get_backend_param()->byte_order_big_endian;
1204         init_symbol_table();
1205         init_types();
1206         init_typehash();
1207         init_basic_types();
1208         init_lexer();
1209         init_ast();
1210         init_parser();
1211         init_ast2firm();
1212         init_mangle();
1213
1214         if (do_timing)
1215                 timer_init();
1216
1217         if (construct_dep_target) {
1218                 if (outname != 0 && strlen(outname) >= 2) {
1219                         get_output_name(dep_target, sizeof(dep_target), outname, ".d");
1220                 } else {
1221                         get_output_name(dep_target, sizeof(dep_target), files->name, ".d");
1222                 }
1223         } else {
1224                 dep_target[0] = '\0';
1225         }
1226
1227         char outnamebuf[4096];
1228         if (outname == NULL) {
1229                 const char *filename = files->name;
1230
1231                 switch(mode) {
1232                 case BenchmarkParser:
1233                 case PrintAst:
1234                 case PrintFluffy:
1235                 case PrintJna:
1236                 case LexTest:
1237                 case PreprocessOnly:
1238                 case ParseOnly:
1239                         outname = "-";
1240                         break;
1241                 case Compile:
1242                         get_output_name(outnamebuf, sizeof(outnamebuf), filename, ".s");
1243                         outname = outnamebuf;
1244                         break;
1245                 case CompileAssemble:
1246                         get_output_name(outnamebuf, sizeof(outnamebuf), filename, ".o");
1247                         outname = outnamebuf;
1248                         break;
1249                 case CompileDump:
1250                         get_output_name(outnamebuf, sizeof(outnamebuf), dumpfunction,
1251                                         ".vcg");
1252                         outname = outnamebuf;
1253                         break;
1254                 case CompileExportIR:
1255                         get_output_name(outnamebuf, sizeof(outnamebuf), filename, ".ir");
1256                         outname = outnamebuf;
1257                         break;
1258                 case CompileAssembleLink:
1259 #ifdef _WIN32
1260                         outname = "a.exe";
1261 #else
1262                         outname = "a.out";
1263 #endif
1264                         break;
1265                 }
1266         }
1267
1268         assert(outname != NULL);
1269
1270         FILE *out;
1271         if (streq(outname, "-")) {
1272                 out = stdout;
1273         } else {
1274                 out = fopen(outname, "w");
1275                 if (out == NULL) {
1276                         fprintf(stderr, "Couldn't open '%s' for writing: %s\n", outname,
1277                                         strerror(errno));
1278                         return EXIT_FAILURE;
1279                 }
1280         }
1281
1282         file_list_entry_t *file;
1283         bool               already_constructed_firm = false;
1284         for (file = files; file != NULL; file = file->next) {
1285                 char        asm_tempfile[1024];
1286                 const char *filename = file->name;
1287                 filetype_t  filetype = file->type;
1288
1289                 if (filetype == FILETYPE_OBJECT)
1290                         continue;
1291
1292                 FILE *in = NULL;
1293                 if (mode == LexTest) {
1294                         if (in == NULL)
1295                                 in = open_file(filename);
1296                         lextest(in, filename);
1297                         fclose(in);
1298                         return EXIT_SUCCESS;
1299                 }
1300
1301                 FILE *preprocessed_in = NULL;
1302                 filetype_t next_filetype = filetype;
1303                 switch (filetype) {
1304                         case FILETYPE_C:
1305                                 next_filetype = FILETYPE_PREPROCESSED_C;
1306                                 goto preprocess;
1307                         case FILETYPE_CXX:
1308                                 next_filetype = FILETYPE_PREPROCESSED_CXX;
1309                                 goto preprocess;
1310                         case FILETYPE_ASSEMBLER:
1311                                 next_filetype = FILETYPE_PREPROCESSED_ASSEMBLER;
1312                                 goto preprocess;
1313 preprocess:
1314                                 /* no support for input on FILE* yet */
1315                                 if (in != NULL)
1316                                         panic("internal compiler error: in for preprocessor != NULL");
1317
1318                                 preprocessed_in = preprocess(filename, filetype);
1319                                 if (mode == PreprocessOnly) {
1320                                         copy_file(out, preprocessed_in);
1321                                         int result = pclose(preprocessed_in);
1322                                         fclose(out);
1323                                         /* remove output file in case of error */
1324                                         if (out != stdout && result != EXIT_SUCCESS) {
1325                                                 unlink(outname);
1326                                         }
1327                                         return result;
1328                                 }
1329
1330                                 in = preprocessed_in;
1331                                 filetype = next_filetype;
1332                                 break;
1333
1334                         default:
1335                                 break;
1336                 }
1337
1338                 FILE *asm_out;
1339                 if (mode == Compile) {
1340                         asm_out = out;
1341                 } else {
1342                         asm_out = make_temp_file(asm_tempfile, sizeof(asm_tempfile), "ccs");
1343                 }
1344
1345                 if (in == NULL)
1346                         in = open_file(filename);
1347
1348                 /* preprocess and compile */
1349                 if (filetype == FILETYPE_PREPROCESSED_C) {
1350                         char const* invalid_mode;
1351                         switch (standard) {
1352                                 case STANDARD_ANSI:
1353                                 case STANDARD_C89:   c_mode = _C89;                break;
1354                                 /* TODO determine difference between these two */
1355                                 case STANDARD_C90:   c_mode = _C89;                break;
1356                                 case STANDARD_C99:   c_mode = _C89 | _C99;         break;
1357                                 case STANDARD_GNU89: c_mode = _C89 |        _GNUC; break;
1358
1359 default_c_warn:
1360                                         fprintf(stderr,
1361                                                         "warning: command line option \"-std=%s\" is not valid for C\n",
1362                                                         invalid_mode);
1363                                         /* FALLTHROUGH */
1364                                 case STANDARD_DEFAULT:
1365                                 case STANDARD_GNU99:   c_mode = _C89 | _C99 | _GNUC; break;
1366
1367                                 case STANDARD_CXX98:   invalid_mode = "c++98"; goto default_c_warn;
1368                                 case STANDARD_GNUXX98: invalid_mode = "gnu98"; goto default_c_warn;
1369                         }
1370                         goto do_parsing;
1371                 } else if (filetype == FILETYPE_PREPROCESSED_CXX) {
1372                         char const* invalid_mode;
1373                         switch (standard) {
1374                                 case STANDARD_C89:   invalid_mode = "c89";   goto default_cxx_warn;
1375                                 case STANDARD_C90:   invalid_mode = "c90";   goto default_cxx_warn;
1376                                 case STANDARD_C99:   invalid_mode = "c99";   goto default_cxx_warn;
1377                                 case STANDARD_GNU89: invalid_mode = "gnu89"; goto default_cxx_warn;
1378                                 case STANDARD_GNU99: invalid_mode = "gnu99"; goto default_cxx_warn;
1379
1380                                 case STANDARD_ANSI:
1381                                 case STANDARD_CXX98: c_mode = _CXX; break;
1382
1383 default_cxx_warn:
1384                                         fprintf(stderr,
1385                                                         "warning: command line option \"-std=%s\" is not valid for C++\n",
1386                                                         invalid_mode);
1387                                 case STANDARD_DEFAULT:
1388                                 case STANDARD_GNUXX98: c_mode = _CXX | _GNUC; break;
1389                         }
1390
1391 do_parsing:
1392                         c_mode |= features_on;
1393                         c_mode &= ~features_off;
1394
1395                         /* do the actual parsing */
1396                         ir_timer_t *t_parsing = ir_timer_new();
1397                         timer_register(t_parsing, "Frontend: Parsing");
1398                         timer_push(t_parsing);
1399                         init_tokens();
1400                         translation_unit_t *const unit = do_parsing(in, filename);
1401                         timer_pop(t_parsing);
1402
1403                         /* prints the AST even if errors occurred */
1404                         if (mode == PrintAst) {
1405                                 print_to_file(out);
1406                                 print_ast(unit);
1407                         }
1408
1409                         if (error_count > 0) {
1410                                 /* parsing failed because of errors */
1411                                 fprintf(stderr, "%u error(s), %u warning(s)\n", error_count,
1412                                         warning_count);
1413                                 result = EXIT_FAILURE;
1414                                 continue;
1415                         } else if (warning_count > 0) {
1416                                 fprintf(stderr, "%u warning(s)\n", warning_count);
1417                         }
1418
1419                         if (in == preprocessed_in) {
1420                                 int pp_result = pclose(preprocessed_in);
1421                                 if (pp_result != EXIT_SUCCESS) {
1422                                         /* remove output file */
1423                                         if (out != stdout)
1424                                                 unlink(outname);
1425                                         return EXIT_FAILURE;
1426                                 }
1427                         }
1428
1429                         if (mode == BenchmarkParser) {
1430                                 return result;
1431                         } else if (mode == PrintFluffy) {
1432                                 write_fluffy_decls(out, unit);
1433                                 continue;
1434                         } else if (mode == PrintJna) {
1435                                 write_jna_decls(out, unit);
1436                                 continue;
1437                         }
1438
1439                         /* build the firm graph */
1440                         ir_timer_t *t_construct = ir_timer_new();
1441                         timer_register(t_construct, "Frontend: Graph construction");
1442                         timer_push(t_construct);
1443                         if (already_constructed_firm) {
1444                                 panic("compiling multiple files/translation units not possible");
1445                         }
1446                         translation_unit_to_firm(unit);
1447                         already_constructed_firm = true;
1448                         timer_pop(t_construct);
1449
1450 graph_built:
1451                         if (mode == ParseOnly) {
1452                                 continue;
1453                         }
1454
1455                         if (mode == CompileDump) {
1456                                 /* find irg */
1457                                 ident    *id     = new_id_from_str(dumpfunction);
1458                                 ir_graph *irg    = NULL;
1459                                 int       n_irgs = get_irp_n_irgs();
1460                                 for (int i = 0; i < n_irgs; ++i) {
1461                                         ir_graph *tirg   = get_irp_irg(i);
1462                                         ident    *irg_id = get_entity_ident(get_irg_entity(tirg));
1463                                         if (irg_id == id) {
1464                                                 irg = tirg;
1465                                                 break;
1466                                         }
1467                                 }
1468
1469                                 if (irg == NULL) {
1470                                         fprintf(stderr, "No graph for function '%s' found\n",
1471                                                 dumpfunction);
1472                                         return EXIT_FAILURE;
1473                                 }
1474
1475                                 dump_ir_graph_file(out, irg);
1476                                 fclose(out);
1477                                 return EXIT_SUCCESS;
1478                         }
1479
1480                         if (mode == CompileExportIR) {
1481                                 fclose(out);
1482                                 ir_export(outname);
1483                                 return EXIT_SUCCESS;
1484                         }
1485
1486                         gen_firm_finish(asm_out, filename);
1487                         if (asm_out != out) {
1488                                 fclose(asm_out);
1489                         }
1490                 } else if (filetype == FILETYPE_IR) {
1491                         fclose(in);
1492                         ir_import(filename);
1493                         goto graph_built;
1494                 } else if (filetype == FILETYPE_PREPROCESSED_ASSEMBLER) {
1495                         copy_file(asm_out, in);
1496                         if (in == preprocessed_in) {
1497                                 int pp_result = pclose(preprocessed_in);
1498                                 if (pp_result != EXIT_SUCCESS) {
1499                                         /* remove output in error case */
1500                                         if (out != stdout)
1501                                                 unlink(outname);
1502                                         return pp_result;
1503                                 }
1504                         }
1505                         if (asm_out != out) {
1506                                 fclose(asm_out);
1507                         }
1508                 }
1509
1510                 if (mode == Compile)
1511                         continue;
1512
1513                 /* if we're here then we have preprocessed assembly */
1514                 filename = asm_tempfile;
1515                 filetype = FILETYPE_PREPROCESSED_ASSEMBLER;
1516
1517                 /* assemble */
1518                 if (filetype == FILETYPE_PREPROCESSED_ASSEMBLER) {
1519                         char        temp[1024];
1520                         const char *filename_o;
1521                         if (mode == CompileAssemble) {
1522                                 fclose(out);
1523                                 filename_o = outname;
1524                         } else {
1525                                 FILE *tempf = make_temp_file(temp, sizeof(temp), "cco");
1526                                 fclose(tempf);
1527                                 filename_o = temp;
1528                         }
1529
1530                         assemble(filename_o, filename);
1531
1532                         size_t len = strlen(filename_o) + 1;
1533                         filename = obstack_copy(&file_obst, filename_o, len);
1534                         filetype = FILETYPE_OBJECT;
1535                 }
1536
1537                 /* ok we're done here, process next file */
1538                 file->name = filename;
1539                 file->type = filetype;
1540         }
1541
1542         if (result != EXIT_SUCCESS) {
1543                 if (out != stdout)
1544                         unlink(outname);
1545                 return result;
1546         }
1547
1548         /* link program file */
1549         if (mode == CompileAssembleLink) {
1550                 obstack_1grow(&ldflags_obst, '\0');
1551                 const char *flags = obstack_finish(&ldflags_obst);
1552
1553                 /* construct commandline */
1554                 const char *linker = getenv("CPARSER_LINK");
1555                 if (linker != NULL) {
1556                         obstack_printf(&file_obst, "%s ", linker);
1557                 } else {
1558                         if (target_triple != NULL)
1559                                 obstack_printf(&file_obst, "%s-", target_triple);
1560                         obstack_printf(&file_obst, "%s ", LINKER);
1561                 }
1562
1563                 for (file_list_entry_t *entry = files; entry != NULL;
1564                                 entry = entry->next) {
1565                         if (entry->type != FILETYPE_OBJECT)
1566                                 continue;
1567
1568                         add_flag(&file_obst, "%s", entry->name);
1569                 }
1570
1571                 add_flag(&file_obst, "-o");
1572                 add_flag(&file_obst, outname);
1573                 obstack_printf(&file_obst, "%s", flags);
1574                 obstack_1grow(&file_obst, '\0');
1575
1576                 char *commandline = obstack_finish(&file_obst);
1577
1578                 if (verbose) {
1579                         puts(commandline);
1580                 }
1581                 int err = system(commandline);
1582                 if (err != EXIT_SUCCESS) {
1583                         fprintf(stderr, "linker reported an error\n");
1584                         return EXIT_FAILURE;
1585                 }
1586         }
1587
1588         if (do_timing)
1589                 timer_term(stderr);
1590
1591         obstack_free(&cppflags_obst, NULL);
1592         obstack_free(&ldflags_obst, NULL);
1593         obstack_free(&asflags_obst, NULL);
1594         obstack_free(&file_obst, NULL);
1595
1596         exit_mangle();
1597         exit_ast2firm();
1598         exit_parser();
1599         exit_ast();
1600         exit_lexer();
1601         exit_typehash();
1602         exit_types();
1603         exit_tokens();
1604         exit_symbol_table();
1605         return EXIT_SUCCESS;
1606 }