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 "adt/error.h"
  76 #include "wrappergen/write_fluffy.h"
  77 #include "wrappergen/write_caml.h"
  78 #include "wrappergen/write_jna.h"
  79 #include "revision.h"
  80 #include "warning.h"
  81 #include "mangle.h"
  82 #include "printer.h"
  83
  84 #ifndef PREPROCESSOR
  85 #ifndef __WIN32__
  86 #define PREPROCESSOR "gcc -E -m32 -U__STRICT_ANSI__"
  87 #else
  88 #define PREPROCESSOR "cpp -m32 -U__STRICT_ANSI__"
  89 #endif
  90 #endif
  91
  92 #ifndef LINKER
  93 #define LINKER    "gcc -m32"
  94 #endif
  95
  96 #ifndef ASSEMBLER
  97 #ifdef __APPLE__
  98 #define ASSEMBLER "gcc -c -xassembler"
  99 #else
 100 #define ASSEMBLER "as --32"
 101 #endif
 102 #endif
 103
 104 /** The current c mode/dialect. */
 105 unsigned int c_mode = _C89 | _ANSI | _C99 | _GNUC;
 106
 107 /** The 'machine size', 16, 32 or 64 bit, 32bit is the default. */
 108 unsigned int machine_size = 32;
 109
 110 /** true if the char type is signed. */
 111 bool char_is_signed = true;
 112
 113 /** true for strict language checking. */
 114 bool strict_mode = false;
 115
 116 /** use builtins for some libc functions */
 117 bool use_builtins = false;
 118
 119 /** we have extern function with const attribute. */
 120 bool have_const_functions = false;
 121
 122 atomic_type_kind_t wchar_atomic_kind = ATOMIC_TYPE_INT;
 123
 124 /* to switch on printing of implicit casts */
 125 extern bool print_implicit_casts;
 126
 127 /* to switch on printing of parenthesis to indicate operator precedence */
 128 extern bool print_parenthesis;
 129
 130 static int             verbose;
 131 static struct obstack  cppflags_obst, ldflags_obst;
 132 static char            dep_target[1024];
 133 static const char     *outname;
 134
 135 typedef enum lang_standard_t {
 136         STANDARD_DEFAULT, /* gnu99 (for C, GCC does gnu89) or gnu++98 (for C++) */
 137         STANDARD_ANSI,    /* c89 (for C) or c++98 (for C++) */
 138         STANDARD_C89,     /* ISO C90 (sic) */
 139         STANDARD_C90,     /* ISO C90 as modified in amendment 1 */
 140         STANDARD_C99,     /* ISO C99 */
 141         STANDARD_GNU89,   /* ISO C90 plus GNU extensions (including some C99) */
 142         STANDARD_GNU99,   /* ISO C99 plus GNU extensions */
 143         STANDARD_CXX98,   /* ISO C++ 1998 plus amendments */
 144         STANDARD_GNUXX98  /* ISO C++ 1998 plus amendments and GNU extensions */
 145 } lang_standard_t;
 146
 147 static lang_standard_t standard;
 148
 149 typedef struct file_list_entry_t file_list_entry_t;
 150
 151 typedef enum filetype_t {
 152         FILETYPE_AUTODETECT,
 153         FILETYPE_C,
 154         FILETYPE_PREPROCESSED_C,
 155         FILETYPE_CXX,
 156         FILETYPE_PREPROCESSED_CXX,
 157         FILETYPE_ASSEMBLER,
 158         FILETYPE_PREPROCESSED_ASSEMBLER,
 159         FILETYPE_OBJECT,
 160         FILETYPE_IR,
 161         FILETYPE_UNKNOWN
 162 } filetype_t;
 163
 164 struct file_list_entry_t {
 165         const char  *name; /**< filename or NULL for stdin */
 166         filetype_t   type;
 167         file_list_entry_t *next;
 168 };
 169
 170 static file_list_entry_t *temp_files;
 171
 172 #if defined(_DEBUG) || defined(FIRM_DEBUG)
 173 /**
 174  * Debug printf implementation.
 175  *
 176  * @param fmt  printf style format parameter
 177  */
 178 void dbg_printf(const char *fmt, ...)
 179 {
 180         va_list list;
 181
 182         if (firm_dump.debug_print) {
 183                 va_start(list, fmt);
 184                 vprintf(fmt, list);
 185                 va_end(list);
 186         }  /* if */
 187 }
 188 #endif /* defined(_DEBUG) || defined(FIRM_DEBUG) */
 189
 190 static void initialize_firm(void)
 191 {
 192         firm_early_init();
 193
 194         dump_consts_local(1);
 195         dump_keepalive_edges(1);
 196 }
 197
 198 static void get_output_name(char *buf, size_t buflen, const char *inputname,
 199                             const char *newext)
 200 {
 201         if (inputname == NULL)
 202                 inputname = "a";
 203
 204         char const *const last_slash = strrchr(inputname, '/');
 205         char const *const filename   =
 206                 last_slash != NULL ? last_slash + 1 : inputname;
 207         char const *const last_dot   = strrchr(filename, '.');
 208         char const *const name_end   =
 209                 last_dot != NULL ? last_dot : strchr(filename, '\0');
 210
 211         int const len = snprintf(buf, buflen, "%.*s%s",
 212                         (int)(name_end - filename), filename, newext);
 213 #ifdef _WIN32
 214         if (len < 0 || buflen <= (size_t)len)
 215 #else
 216         if (buflen <= (size_t)len)
 217 #endif
 218                 panic("filename too long");
 219 }
 220
 221 #include "builtins.h"
 222
 223 static translation_unit_t *do_parsing(FILE *const in, const char *const input_name)
 224 {
 225         start_parsing();
 226
 227         if (use_builtins) {
 228                 lexer_open_buffer(builtins, sizeof(builtins)-1, "<builtin>");
 229                 parse();
 230         }
 231
 232         lexer_open_stream(in, input_name);
 233         parse();
 234
 235         translation_unit_t *unit = finish_parsing();
 236         return unit;
 237 }
 238
 239 static void lextest(FILE *in, const char *fname)
 240 {
 241         lexer_open_stream(in, fname);
 242
 243         do {
 244                 lexer_next_preprocessing_token();
 245                 print_token(stdout, &lexer_token);
 246                 putchar('\n');
 247         } while (lexer_token.type != T_EOF);
 248 }
 249
 250 static void add_flag(struct obstack *obst, const char *format, ...)
 251 {
 252         char buf[65536];
 253         va_list ap;
 254
 255         va_start(ap, format);
 256 #ifdef _WIN32
 257         int len =
 258 #endif
 259                 vsnprintf(buf, sizeof(buf), format, ap);
 260         va_end(ap);
 261
 262         obstack_1grow(obst, ' ');
 263 #ifdef _WIN32
 264         obstack_1grow(obst, '"');
 265         obstack_grow(obst, buf, len);
 266         obstack_1grow(obst, '"');
 267 #else
 268         /* escape stuff... */
 269         for (char *c = buf; *c != '\0'; ++c) {
 270                 switch(*c) {
 271                 case ' ':
 272                 case '"':
 273                 case '$':
 274                 case '&':
 275                 case '(':
 276                 case ')':
 277                 case ';':
 278                 case '<':
 279                 case '>':
 280                 case '\'':
 281                 case '\\':
 282                 case '\n':
 283                 case '\r':
 284                 case '\t':
 285                 case '`':
 286                 case '|':
 287                         obstack_1grow(obst, '\\');
 288                         /* FALLTHROUGH */
 289                 default:
 290                         obstack_1grow(obst, *c);
 291                         break;
 292                 }
 293         }
 294 #endif
 295 }
 296
 297 static const char *type_to_string(type_t *type)
 298 {
 299         assert(type->kind == TYPE_ATOMIC);
 300         return get_atomic_kind_name(type->atomic.akind);
 301 }
 302
 303 static FILE *preprocess(const char *fname, filetype_t filetype)
 304 {
 305         static const char *common_flags = NULL;
 306
 307         if (common_flags == NULL) {
 308                 obstack_1grow(&cppflags_obst, '\0');
 309                 const char *flags = obstack_finish(&cppflags_obst);
 310
 311                 /* setup default defines */
 312                 add_flag(&cppflags_obst, "-U__WCHAR_TYPE__");
 313                 add_flag(&cppflags_obst, "-D__WCHAR_TYPE__=%s", type_to_string(type_wchar_t));
 314                 add_flag(&cppflags_obst, "-U__SIZE_TYPE__");
 315                 add_flag(&cppflags_obst, "-D__SIZE_TYPE__=%s", type_to_string(type_size_t));
 316
 317                 add_flag(&cppflags_obst, "-U__VERSION__");
 318                 add_flag(&cppflags_obst, "-D__VERSION__=\"%s\"", cparser_REVISION);
 319
 320                 /* TODO hack... */
 321                 add_flag(&cppflags_obst, "-D__builtin_abort=abort");
 322                 add_flag(&cppflags_obst, "-D__builtin_abs=abs");
 323                 add_flag(&cppflags_obst, "-D__builtin_exit=exit");
 324                 add_flag(&cppflags_obst, "-D__builtin_malloc=malloc");
 325                 add_flag(&cppflags_obst, "-D__builtin_memcmp=memcmp");
 326                 add_flag(&cppflags_obst, "-D__builtin_memcpy=memcpy");
 327                 add_flag(&cppflags_obst, "-D__builtin_memset=memset");
 328                 add_flag(&cppflags_obst, "-D__builtin_strlen=strlen");
 329                 add_flag(&cppflags_obst, "-D__builtin_strcmp=strcmp");
 330                 add_flag(&cppflags_obst, "-D__builtin_strcpy=strcpy");
 331
 332                 if (flags[0] != '\0') {
 333                         size_t len = strlen(flags);
 334                         obstack_1grow(&cppflags_obst, ' ');
 335                         obstack_grow(&cppflags_obst, flags, len);
 336                 }
 337                 obstack_1grow(&cppflags_obst, '\0');
 338                 common_flags = obstack_finish(&cppflags_obst);
 339         }
 340
 341         assert(obstack_object_size(&cppflags_obst) == 0);
 342
 343         const char *preprocessor = getenv("CPARSER_PP");
 344         if (preprocessor == NULL)
 345                 preprocessor = PREPROCESSOR;
 346
 347         obstack_printf(&cppflags_obst, "%s ", preprocessor);
 348         switch (filetype) {
 349         case FILETYPE_C:
 350                 add_flag(&cppflags_obst, "-std=c99");
 351                 break;
 352         case FILETYPE_CXX:
 353                 add_flag(&cppflags_obst, "-std=c++98");
 354                 break;
 355         case FILETYPE_ASSEMBLER:
 356                 add_flag(&cppflags_obst, "-x");
 357                 add_flag(&cppflags_obst, "assembler-with-cpp");
 358                 break;
 359         default:
 360                 break;
 361         }
 362         obstack_printf(&cppflags_obst, "%s", common_flags);
 363
 364         /* handle dependency generation */
 365         if (dep_target[0] != '\0') {
 366                 add_flag(&cppflags_obst, "-MF");
 367                 add_flag(&cppflags_obst, dep_target);
 368                 if (outname != NULL) {
 369                                 add_flag(&cppflags_obst, "-MQ");
 370                                 add_flag(&cppflags_obst, outname);
 371                 }
 372         }
 373         add_flag(&cppflags_obst, fname);
 374
 375         obstack_1grow(&cppflags_obst, '\0');
 376         char *buf = obstack_finish(&cppflags_obst);
 377         if (verbose) {
 378                 puts(buf);
 379         }
 380
 381         FILE *f = popen(buf, "r");
 382         if (f == NULL) {
 383                 fprintf(stderr, "invoking preprocessor failed\n");
 384                 exit(1);
 385         }
 386
 387         /* we don't really need that anymore */
 388         obstack_free(&cppflags_obst, buf);
 389
 390         return f;
 391 }
 392
 393 static void assemble(const char *out, const char *in)
 394 {
 395         char buf[65536];
 396
 397         const char *assembler = getenv("CPARSER_AS");
 398         if (assembler == NULL)
 399                 assembler = ASSEMBLER;
 400
 401         snprintf(buf, sizeof(buf), "%s %s -o %s", assembler, in, out);
 402         if (verbose) {
 403                 puts(buf);
 404         }
 405
 406         int err = system(buf);
 407         if (err != 0) {
 408                 fprintf(stderr, "assembler reported an error\n");
 409                 exit(1);
 410         }
 411 }
 412
 413 static void print_file_name(const char *file)
 414 {
 415         add_flag(&ldflags_obst, "-print-file-name=%s", file);
 416
 417         obstack_1grow(&ldflags_obst, '\0');
 418         const char *flags = obstack_finish(&ldflags_obst);
 419
 420         /* construct commandline */
 421         const char *linker = getenv("CPARSER_LINK");
 422         if (linker == NULL)
 423                 linker = LINKER;
 424         obstack_printf(&ldflags_obst, "%s ", linker);
 425         obstack_printf(&ldflags_obst, "%s", flags);
 426         obstack_1grow(&ldflags_obst, '\0');
 427
 428         char *commandline = obstack_finish(&ldflags_obst);
 429
 430         if (verbose) {
 431                 puts(commandline);
 432         }
 433         int err = system(commandline);
 434         if (err != EXIT_SUCCESS) {
 435                 fprintf(stderr, "linker reported an error\n");
 436                 exit(1);
 437         }
 438 }
 439
 440 static const char *try_dir(const char *dir)
 441 {
 442         if (dir == NULL)
 443                 return dir;
 444         if (access(dir, R_OK | W_OK | X_OK) == 0)
 445                 return dir;
 446         return NULL;
 447 }
 448
 449 static const char *get_tempdir(void)
 450 {
 451         static const char *tmpdir = NULL;
 452
 453         if (tmpdir != NULL)
 454                 return tmpdir;
 455
 456         if (tmpdir == NULL)
 457                 tmpdir = try_dir(getenv("TMPDIR"));
 458         if (tmpdir == NULL)
 459                 tmpdir = try_dir(getenv("TMP"));
 460         if (tmpdir == NULL)
 461                 tmpdir = try_dir(getenv("TEMP"));
 462
 463 #ifdef P_tmpdir
 464         if (tmpdir == NULL)
 465                 tmpdir = try_dir(P_tmpdir);
 466 #endif
 467
 468         if (tmpdir == NULL)
 469                 tmpdir = try_dir("/var/tmp");
 470         if (tmpdir == NULL)
 471                 tmpdir = try_dir("/usr/tmp");
 472         if (tmpdir == NULL)
 473                 tmpdir = try_dir("/tmp");
 474
 475         if (tmpdir == NULL)
 476                 tmpdir = ".";
 477
 478         return tmpdir;
 479 }
 480
 481 #ifndef HAVE_MKSTEMP
 482 /* cheap and nasty mkstemp replacement */
 483 static int mkstemp(char *templ)
 484 {
 485         mktemp(templ);
 486         return open(templ, O_RDWR|O_CREAT|O_EXCL|O_BINARY, 0600);
 487 }
 488 #endif
 489
 490 /**
 491  * an own version of tmpnam, which: writes in a buffer, emits no warnings
 492  * during linking (like glibc/gnu ld do for tmpnam)...
 493  */
 494 static FILE *make_temp_file(char *buffer, size_t buflen, const char *prefix)
 495 {
 496         const char *tempdir = get_tempdir();
 497
 498         snprintf(buffer, buflen, "%s/%sXXXXXX", tempdir, prefix);
 499
 500         int fd = mkstemp(buffer);
 501         if (fd == -1) {
 502                 fprintf(stderr, "couldn't create temporary file: %s\n",
 503                         strerror(errno));
 504                 exit(1);
 505         }
 506         FILE *out = fdopen(fd, "w");
 507         if (out == NULL) {
 508                 fprintf(stderr, "couldn't create temporary file FILE*\n");
 509                 exit(1);
 510         }
 511
 512         file_list_entry_t *entry = xmalloc(sizeof(*entry));
 513         memset(entry, 0, sizeof(*entry));
 514
 515         size_t  name_len = strlen(buffer) + 1;
 516         char   *name     = malloc(name_len);
 517         memcpy(name, buffer, name_len);
 518         entry->name      = name;
 519
 520         entry->next = temp_files;
 521         temp_files  = entry;
 522
 523         return out;
 524 }
 525
 526 static void free_temp_files(void)
 527 {
 528         file_list_entry_t *entry = temp_files;
 529         file_list_entry_t *next;
 530         for ( ; entry != NULL; entry = next) {
 531                 next = entry->next;
 532
 533                 unlink(entry->name);
 534                 free((char*) entry->name);
 535                 free(entry);
 536         }
 537         temp_files = NULL;
 538 }
 539
 540 /**
 541  * Do the necessary lowering for compound parameters.
 542  */
 543 void lower_compound_params(void)
 544 {
 545         lower_params_t params;
 546
 547         params.def_ptr_alignment    = 4;
 548         params.flags                = LF_COMPOUND_RETURN | LF_RETURN_HIDDEN;
 549         params.hidden_params        = ADD_HIDDEN_ALWAYS_IN_FRONT;
 550         params.find_pointer_type    = NULL;
 551         params.ret_compound_in_regs = NULL;
 552         lower_calls_with_compounds(&params);
 553 }
 554
 555 typedef enum compile_mode_t {
 556         BenchmarkParser,
 557         PreprocessOnly,
 558         ParseOnly,
 559         Compile,
 560         CompileDump,
 561         CompileExportIR,
 562         CompileAssemble,
 563         CompileAssembleLink,
 564         LexTest,
 565         PrintAst,
 566         PrintFluffy,
 567         PrintCaml,
 568         PrintJna
 569 } compile_mode_t;
 570
 571 static void usage(const char *argv0)
 572 {
 573         fprintf(stderr, "Usage %s input [-o output] [-c]\n", argv0);
 574 }
 575
 576 static void print_cparser_version(void)
 577 {
 578         printf("cparser (%s) using libFirm (%u.%u",
 579                cparser_REVISION, ir_get_version_major(),
 580                ir_get_version_minor());
 581
 582         const char *revision = ir_get_version_revision();
 583         if (revision[0] != 0) {
 584                 putchar(' ');
 585                 fputs(revision, stdout);
 586         }
 587
 588         const char *build = ir_get_version_build();
 589         if (build[0] != 0) {
 590                 putchar(' ');
 591                 fputs(build, stdout);
 592         }
 593         puts(")");
 594         puts("This is free software; see the source for copying conditions.  There is NO\n"
 595              "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n");
 596 }
 597
 598 static void set_be_option(const char *arg)
 599 {
 600         int res = firm_be_option(arg);
 601         (void) res;
 602         assert(res);
 603 }
 604
 605 static void set_option(const char *arg)
 606 {
 607         int res = firm_option(arg);
 608         (void) res;
 609         assert(res);
 610 }
 611
 612 static void copy_file(FILE *dest, FILE *input)
 613 {
 614         char buf[16384];
 615
 616         while (!feof(input) && !ferror(dest)) {
 617                 size_t read = fread(buf, 1, sizeof(buf), input);
 618                 if (fwrite(buf, 1, read, dest) != read) {
 619                         perror("couldn't write output");
 620                 }
 621         }
 622 }
 623
 624 static inline bool streq(char const* a, char const* b)
 625 {
 626         return strcmp(a, b) == 0;
 627 }
 628
 629 static inline bool strstart(char const* str, char const* start)
 630 {
 631         do {
 632                 if (*start == '\0')
 633                         return true;
 634         } while (*str++ == *start++);
 635         return false;
 636 }
 637
 638 static FILE *open_file(const char *filename)
 639 {
 640         if (streq(filename, "-")) {
 641                 return stdin;
 642         }
 643
 644         FILE *in = fopen(filename, "r");
 645         if (in == NULL) {
 646                 fprintf(stderr, "Couldn't open '%s': %s\n", filename,
 647                                 strerror(errno));
 648                 exit(1);
 649         }
 650
 651         return in;
 652 }
 653
 654 static filetype_t get_filetype_from_string(const char *string)
 655 {
 656         if (streq(string, "c") || streq(string, "c-header"))
 657                 return FILETYPE_C;
 658         if (streq(string, "c++") || streq(string, "c++-header"))
 659                 return FILETYPE_CXX;
 660         if (streq(string, "assembler"))
 661                 return FILETYPE_PREPROCESSED_ASSEMBLER;
 662         if (streq(string, "assembler-with-cpp"))
 663                 return FILETYPE_ASSEMBLER;
 664         if (streq(string, "none"))
 665                 return FILETYPE_AUTODETECT;
 666
 667         return FILETYPE_UNKNOWN;
 668 }
 669
 670 static void init_os_support(void)
 671 {
 672         /* OS option must be set to the backend */
 673         switch (firm_opt.os_support) {
 674         case OS_SUPPORT_MINGW:
 675                 set_be_option("ia32-gasmode=mingw");
 676                 wchar_atomic_kind = ATOMIC_TYPE_USHORT;
 677                 break;
 678         case OS_SUPPORT_LINUX:
 679                 set_be_option("ia32-gasmode=elf");
 680                 break;
 681         case OS_SUPPORT_MACHO:
 682                 set_be_option("ia32-gasmode=macho");
 683                 set_be_option("ia32-stackalign=4");
 684                 set_be_option("pic");
 685                 break;
 686         }
 687 }
 688
 689 int main(int argc, char **argv)
 690 {
 691         initialize_firm();
 692
 693         const char        *dumpfunction         = NULL;
 694         const char        *print_file_name_file = NULL;
 695         compile_mode_t     mode                 = CompileAssembleLink;
 696         int                opt_level            = 1;
 697         int                result               = EXIT_SUCCESS;
 698         char               cpu_arch[16]         = "ia32";
 699         file_list_entry_t *files                = NULL;
 700         file_list_entry_t *last_file            = NULL;
 701         bool               construct_dep_target = false;
 702         bool               do_timing            = false;
 703         struct obstack     file_obst;
 704
 705         atexit(free_temp_files);
 706
 707         /* hack for now... */
 708         if (strstr(argv[0], "pptest") != NULL) {
 709                 extern int pptest_main(int argc, char **argv);
 710                 return pptest_main(argc, argv);
 711         }
 712
 713         obstack_init(&cppflags_obst);
 714         obstack_init(&ldflags_obst);
 715         obstack_init(&file_obst);
 716
 717 #define GET_ARG_AFTER(def, args)                                             \
 718         def = &arg[sizeof(args)-1];                                              \
 719         if (def[0] == '\0') {                                                     \
 720                 ++i;                                                                 \
 721                 if (i >= argc) {                                                      \
 722                         fprintf(stderr, "error: expected argument after '" args "'\n");  \
 723                         argument_errors = true;                                          \
 724                         break;                                                           \
 725                 }                                                                    \
 726                 def = argv[i];                                                       \
 727                 if (def[0] == '-' && def[1] != '\0') {                                \
 728                         fprintf(stderr, "error: expected argument after '" args "'\n");  \
 729                         argument_errors = true;                                          \
 730                         continue;                                                        \
 731                 }                                                                    \
 732         }
 733
 734 #define SINGLE_OPTION(ch) (option[0] == (ch) && option[1] == '\0')
 735
 736         /* early options parsing (find out optimisation level and OS) */
 737         for (int i = 1; i < argc; ++i) {
 738                 const char *arg = argv[i];
 739                 if (arg[0] != '-')
 740                         continue;
 741
 742                 const char *option = &arg[1];
 743                 if (option[0] == 'O') {
 744                         sscanf(&option[1], "%d", &opt_level);
 745                 }
 746                 if (strcmp(arg, "-fwin32") == 0) {
 747                         firm_opt.os_support = OS_SUPPORT_MINGW;
 748                 } else if (strcmp(arg, "-fmac") == 0) {
 749                         firm_opt.os_support = OS_SUPPORT_MACHO;
 750                 } else if (strcmp(arg, "-flinux") == 0) {
 751                         firm_opt.os_support = OS_SUPPORT_LINUX;
 752                 }
 753         }
 754
 755         /* set target/os specific stuff */
 756         init_os_support();
 757
 758         /* apply optimisation level */
 759         switch(opt_level) {
 760         case 0:
 761                 set_option("no-opt");
 762                 break;
 763         case 1:
 764                 set_option("no-inline");
 765                 break;
 766         default:
 767         case 4:
 768                 /* use_builtins = true; */
 769                 /* fallthrough */
 770         case 3:
 771                 set_option("thread-jumps");
 772                 set_option("if-conversion");
 773                 /* fallthrough */
 774         case 2:
 775                 set_option("strict-aliasing");
 776                 set_option("inline");
 777                 set_option("deconv");
 778                 set_be_option("omitfp");
 779                 break;
 780         }
 781
 782         /* parse rest of options */
 783         standard                        = STANDARD_DEFAULT;
 784         unsigned        features_on     = 0;
 785         unsigned        features_off    = 0;
 786         filetype_t      forced_filetype = FILETYPE_AUTODETECT;
 787         bool            help_displayed  = false;
 788         bool            argument_errors = false;
 789         for (int i = 1; i < argc; ++i) {
 790                 const char *arg = argv[i];
 791                 if (arg[0] == '-' && arg[1] != '\0') {
 792                         /* an option */
 793                         const char *option = &arg[1];
 794                         if (option[0] == 'o') {
 795                                 GET_ARG_AFTER(outname, "-o");
 796                         } else if (option[0] == 'g') {
 797                                 set_be_option("debuginfo=stabs");
 798                                 set_be_option("omitfp=no");
 799                                 set_be_option("ia32-nooptcc=yes");
 800                         } else if (SINGLE_OPTION('c')) {
 801                                 mode = CompileAssemble;
 802                         } else if (SINGLE_OPTION('E')) {
 803                                 mode = PreprocessOnly;
 804                         } else if (SINGLE_OPTION('S')) {
 805                                 mode = Compile;
 806                         } else if (option[0] == 'O') {
 807                                 continue;
 808                         } else if (option[0] == 'I') {
 809                                 const char *opt;
 810                                 GET_ARG_AFTER(opt, "-I");
 811                                 add_flag(&cppflags_obst, "-I%s", opt);
 812                         } else if (option[0] == 'D') {
 813                                 const char *opt;
 814                                 GET_ARG_AFTER(opt, "-D");
 815                                 add_flag(&cppflags_obst, "-D%s", opt);
 816                         } else if (option[0] == 'U') {
 817                                 const char *opt;
 818                                 GET_ARG_AFTER(opt, "-U");
 819                                 add_flag(&cppflags_obst, "-U%s", opt);
 820                         } else if (option[0] == 'l') {
 821                                 const char *opt;
 822                                 GET_ARG_AFTER(opt, "-l");
 823                                 add_flag(&ldflags_obst, "-l%s", opt);
 824                         } else if (option[0] == 'L') {
 825                                 const char *opt;
 826                                 GET_ARG_AFTER(opt, "-L");
 827                                 add_flag(&ldflags_obst, "-L%s", opt);
 828                         } else if (SINGLE_OPTION('v')) {
 829                                 verbose = 1;
 830                         } else if (SINGLE_OPTION('w')) {
 831                                 memset(&warning, 0, sizeof(warning));
 832                         } else if (option[0] == 'x') {
 833                                 const char *opt;
 834                                 GET_ARG_AFTER(opt, "-x");
 835                                 forced_filetype = get_filetype_from_string(opt);
 836                                 if (forced_filetype == FILETYPE_UNKNOWN) {
 837                                         fprintf(stderr, "Unknown language '%s'\n", opt);
 838                                         argument_errors = true;
 839                                 }
 840                         } else if (streq(option, "M")) {
 841                                 mode = PreprocessOnly;
 842                                 add_flag(&cppflags_obst, "-M");
 843                         } else if (streq(option, "MMD") ||
 844                                    streq(option, "MD")) {
 845                             construct_dep_target = true;
 846                                 add_flag(&cppflags_obst, "-%s", option);
 847                         } else if (streq(option, "MM")  ||
 848                                    streq(option, "MP")) {
 849                                 add_flag(&cppflags_obst, "-%s", option);
 850                         } else if (streq(option, "MT") ||
 851                                    streq(option, "MQ") ||
 852                                    streq(option, "MF")) {
 853                                 const char *opt;
 854                                 GET_ARG_AFTER(opt, "-MT");
 855                                 add_flag(&cppflags_obst, "-%s", option);
 856                                 add_flag(&cppflags_obst, "%s", opt);
 857                         } else if (streq(option, "include")) {
 858                                 const char *opt;
 859                                 GET_ARG_AFTER(opt, "-include");
 860                                 add_flag(&cppflags_obst, "-include");
 861                                 add_flag(&cppflags_obst, "%s", opt);
 862                         } else if (streq(option, "isystem")) {
 863                                 const char *opt;
 864                                 GET_ARG_AFTER(opt, "-isystem");
 865                                 add_flag(&cppflags_obst, "-isystem");
 866                                 add_flag(&cppflags_obst, "%s", opt);
 867                         } else if (streq(option, "nostdinc")
 868                                         || streq(option, "trigraphs")) {
 869                                 /* pass these through to the preprocessor */
 870                                 add_flag(&cppflags_obst, "%s", arg);
 871                         } else if (streq(option, "pipe")) {
 872                                 /* here for gcc compatibility */
 873                         } else if (option[0] == 'f') {
 874                                 char const *orig_opt;
 875                                 GET_ARG_AFTER(orig_opt, "-f");
 876
 877                                 if (strstart(orig_opt, "align-loops=") ||
 878                                     strstart(orig_opt, "align-jumps=") ||
 879                                     strstart(orig_opt, "align-functions=")) {
 880                                         fprintf(stderr, "ignoring gcc option '-f%s'\n", orig_opt);
 881                                 } else if (strstart(orig_opt, "input-charset=")) {
 882                                         char const* const encoding = strchr(orig_opt, '=') + 1;
 883                                         select_input_encoding(encoding);
 884                                 } else if (streq(orig_opt, "verbose-asm")) {
 885                                         /* ignore: we always print verbose assembler */
 886                                 } else {
 887                                         char const *opt         = orig_opt;
 888                                         bool        truth_value = true;
 889                                         if (opt[0] == 'n' && opt[1] == 'o' && opt[2] == '-') {
 890                                                 truth_value = false;
 891                                                 opt += 3;
 892                                         }
 893
 894                                         if (streq(opt, "builtins")) {
 895                                                 use_builtins = truth_value;
 896                                         } else if (streq(opt, "dollars-in-identifiers")) {
 897                                                 allow_dollar_in_symbol = truth_value;
 898                                         } else if (streq(opt, "omit-frame-pointer")) {
 899                                                 set_be_option(truth_value ? "omitfp" : "omitfp=no");
 900                                         } else if (streq(opt, "short-wchar")) {
 901                                                 wchar_atomic_kind = truth_value ? ATOMIC_TYPE_USHORT
 902                                                         : ATOMIC_TYPE_INT;
 903                                         } else if (streq(opt, "signed-char")) {
 904                                                 char_is_signed = truth_value;
 905                                         } else if (streq(opt, "strength-reduce")) {
 906                                                 firm_option(truth_value ? "strength-red" : "no-strength-red");
 907                                         } else if (streq(opt, "syntax-only")) {
 908                                                 mode = truth_value ? ParseOnly : CompileAssembleLink;
 909                                         } else if (streq(opt, "unsigned-char")) {
 910                                                 char_is_signed = !truth_value;
 911                                         } else if (streq(opt, "fast-math")               ||
 912                                                    streq(opt, "jump-tables")             ||
 913                                                    streq(opt, "expensive-optimizations") ||
 914                                                    streq(opt, "common")                  ||
 915                                                    streq(opt, "PIC")                     ||
 916                                                    streq(opt, "align-loops")             ||
 917                                                    streq(opt, "align-jumps")             ||
 918                                                    streq(opt, "align-functions")) {
 919                                                 fprintf(stderr, "ignoring gcc option '-f%s'\n", orig_opt);
 920                                         } else {
 921                                                 int res = firm_option(orig_opt);
 922                                                 if (res == 0) {
 923                                                         fprintf(stderr, "error: unknown Firm option '-f%s'\n",
 924                                                                 orig_opt);
 925                                                         argument_errors = true;
 926                                                         continue;
 927                                                 } else if (res == -1) {
 928                                                         help_displayed = true;
 929                                                 }
 930                                         }
 931                                 }
 932                         } else if (option[0] == 'b') {
 933                                 const char *opt;
 934                                 GET_ARG_AFTER(opt, "-b");
 935                                 int res = firm_be_option(opt);
 936                                 if (res == 0) {
 937                                         fprintf(stderr, "error: unknown Firm backend option '-b %s'\n",
 938                                                 opt);
 939                                         argument_errors = true;
 940                                 } else if (res == -1) {
 941                                         help_displayed = true;
 942                                 } else if (strstart(opt, "isa=")) {
 943                                         strncpy(cpu_arch, opt, sizeof(cpu_arch));
 944                                 }
 945                         } else if (option[0] == 'W') {
 946                                 if (strstart(option + 1, "p,")) {
 947                                         // pass options directly to the preprocessor
 948                                         const char *opt;
 949                                         GET_ARG_AFTER(opt, "-Wp,");
 950                                         add_flag(&cppflags_obst, "-Wp,%s", opt);
 951                                 } else if (strstart(option + 1, "l,")) {
 952                                         // pass options directly to the linker
 953                                         const char *opt;
 954                                         GET_ARG_AFTER(opt, "-Wl,");
 955                                         add_flag(&ldflags_obst, "-Wl,%s", opt);
 956                                 } else if (streq(option + 1, "no-trigraphs")
 957                                                         || streq(option + 1, "undef")) {
 958                                         add_flag(&cppflags_obst, "%s", arg);
 959                                 } else {
 960                                         set_warning_opt(&option[1]);
 961                                 }
 962                         } else if (option[0] == 'm') {
 963                                 /* -m options */
 964                                 const char *opt;
 965                                 char arch_opt[64];
 966
 967                                 GET_ARG_AFTER(opt, "-m");
 968                                 if (strstart(opt, "arch=")) {
 969                                         GET_ARG_AFTER(opt, "-march=");
 970                                         snprintf(arch_opt, sizeof(arch_opt), "%s-arch=%s", cpu_arch, opt);
 971                                         int res = firm_be_option(arch_opt);
 972                                         if (res == 0) {
 973                                                 fprintf(stderr, "Unknown architecture '%s'\n", arch_opt);
 974                                                 argument_errors = true;
 975                                         } else {
 976                                                 snprintf(arch_opt, sizeof(arch_opt), "%s-opt=%s", cpu_arch, opt);
 977                                                 int res = firm_be_option(arch_opt);
 978                                                 if (res == 0)
 979                                                         argument_errors = true;
 980                                         }
 981                                 } else if (strstart(opt, "tune=")) {
 982                                         GET_ARG_AFTER(opt, "-mtune=");
 983                                         snprintf(arch_opt, sizeof(arch_opt), "%s-opt=%s", cpu_arch, opt);
 984                                         int res = firm_be_option(arch_opt);
 985                                         if (res == 0)
 986                                                 argument_errors = true;
 987                                 } else if (strstart(opt, "cpu=")) {
 988                                         GET_ARG_AFTER(opt, "-mcpu=");
 989                                         snprintf(arch_opt, sizeof(arch_opt), "%s-arch=%s", cpu_arch, opt);
 990                                         int res = firm_be_option(arch_opt);
 991                                         if (res == 0)
 992                                                 argument_errors = true;
 993                                 } else if (strstart(opt, "fpmath=")) {
 994                                         GET_ARG_AFTER(opt, "-mfpmath=");
 995                                         if (streq(opt, "387"))
 996                                                 opt = "x87";
 997                                         else if (streq(opt, "sse"))
 998                                                 opt = "sse2";
 999                                         else {
1000                                                 fprintf(stderr, "error: option -mfpumath supports only 387 or sse\n");
1001                                                 argument_errors = true;
1002                                         }
1003                                         if (!argument_errors) {
1004                                                 snprintf(arch_opt, sizeof(arch_opt), "%s-fpunit=%s", cpu_arch, opt);
1005                                                 int res = firm_be_option(arch_opt);
1006                                                 if (res == 0)
1007                                                         argument_errors = true;
1008                                         }
1009                                 } else if (strstart(opt, "preferred-stack-boundary=")) {
1010                                         GET_ARG_AFTER(opt, "-mpreferred-stack-boundary=");
1011                                         snprintf(arch_opt, sizeof(arch_opt), "%s-stackalign=%s", cpu_arch, opt);
1012                                         int res = firm_be_option(arch_opt);
1013                                         if (res == 0)
1014                                                 argument_errors = true;
1015                                 } else if (streq(opt, "omit-leaf-frame-pointer")) {
1016                                         set_be_option("omitleaffp=1");
1017                                 } else if (streq(opt, "no-omit-leaf-frame-pointer")) {
1018                                         set_be_option("omitleaffp=0");
1019                                 } else if (streq(opt, "rtd")) {
1020                                         default_calling_convention = CC_STDCALL;
1021                                 } else {
1022                                         char *endptr;
1023                                         long int value = strtol(opt, &endptr, 10);
1024                                         if (*endptr != '\0') {
1025                                                 fprintf(stderr, "error: wrong option '-m %s'\n",  opt);
1026                                                 argument_errors = true;
1027                                         }
1028                                         if (value != 16 && value != 32 && value != 64) {
1029                                                 fprintf(stderr, "error: option -m supports only 16, 32 or 64\n");
1030                                                 argument_errors = true;
1031                                         } else {
1032                                                 machine_size = (unsigned int)value;
1033                                         }
1034                                 }
1035                         } else if (streq(option, "pg")) {
1036                                 set_be_option("gprof");
1037                                 add_flag(&ldflags_obst, "-pg");
1038                         } else if (streq(option, "pedantic") ||
1039                                    streq(option, "ansi")) {
1040                                 fprintf(stderr, "warning: ignoring gcc option '%s'\n", arg);
1041                         } else if (streq(option, "shared")) {
1042                                 add_flag(&ldflags_obst, "-shared");
1043                         } else if (strstart(option, "std=")) {
1044                                 const char *const o = &option[4];
1045                                 standard =
1046                                         streq(o, "c++")            ? STANDARD_CXX98   :
1047                                         streq(o, "c++98")          ? STANDARD_CXX98   :
1048                                         streq(o, "c89")            ? STANDARD_C89     :
1049                                         streq(o, "c99")            ? STANDARD_C99     :
1050                                         streq(o, "c9x")            ? STANDARD_C99     : // deprecated
1051                                         streq(o, "gnu++98")        ? STANDARD_GNUXX98 :
1052                                         streq(o, "gnu89")          ? STANDARD_GNU89   :
1053                                         streq(o, "gnu99")          ? STANDARD_GNU99   :
1054                                         streq(o, "gnu9x")          ? STANDARD_GNU99   : // deprecated
1055                                         streq(o, "iso9899:1990")   ? STANDARD_C89     :
1056                                         streq(o, "iso9899:199409") ? STANDARD_C90     :
1057                                         streq(o, "iso9899:1999")   ? STANDARD_C99     :
1058                                         streq(o, "iso9899:199x")   ? STANDARD_C99     : // deprecated
1059                                         (fprintf(stderr, "warning: ignoring gcc option '%s'\n", arg), standard);
1060                         } else if (streq(option, "version")) {
1061                                 print_cparser_version();
1062                         } else if (strstart(option, "print-file-name=")) {
1063                                 GET_ARG_AFTER(print_file_name_file, "-print-file-name=");
1064                         } else if (option[0] == '-') {
1065                                 /* double dash option */
1066                                 ++option;
1067                                 if (streq(option, "gcc")) {
1068                                         features_on  |=  _GNUC;
1069                                         features_off &= ~_GNUC;
1070                                 } else if (streq(option, "no-gcc")) {
1071                                         features_on  &= ~_GNUC;
1072                                         features_off |=  _GNUC;
1073                                 } else if (streq(option, "ms")) {
1074                                         features_on  |=  _MS;
1075                                         features_off &= ~_MS;
1076                                 } else if (streq(option, "no-ms")) {
1077                                         features_on  &= ~_MS;
1078                                         features_off |=  _MS;
1079                                 } else if (streq(option, "strict")) {
1080                                         strict_mode = true;
1081                                 } else if (streq(option, "lextest")) {
1082                                         mode = LexTest;
1083                                 } else if (streq(option, "benchmark")) {
1084                                         mode = BenchmarkParser;
1085                                 } else if (streq(option, "print-ast")) {
1086                                         mode = PrintAst;
1087                                 } else if (streq(option, "print-implicit-cast")) {
1088                                         print_implicit_casts = true;
1089                                 } else if (streq(option, "print-parenthesis")) {
1090                                         print_parenthesis = true;
1091                                 } else if (streq(option, "print-fluffy")) {
1092                                         mode = PrintFluffy;
1093                                 } else if (streq(option, "print-caml")) {
1094                                         mode = PrintCaml;
1095                                 } else if (streq(option, "print-jna")) {
1096                                         mode = PrintJna;
1097                                 } else if (streq(option, "time")) {
1098                                         do_timing = true;
1099                                 } else if (streq(option, "version")) {
1100                                         print_cparser_version();
1101                                         exit(EXIT_SUCCESS);
1102                                 } else if (streq(option, "dump-function")) {
1103                                         ++i;
1104                                         if (i >= argc) {
1105                                                 fprintf(stderr, "error: "
1106                                                         "expected argument after '--dump-function'\n");
1107                                                 argument_errors = true;
1108                                                 break;
1109                                         }
1110                                         dumpfunction = argv[i];
1111                                         mode         = CompileDump;
1112                                 } else if (streq(option, "export-ir")) {
1113                                         mode = CompileExportIR;
1114                                 } else {
1115                                         fprintf(stderr, "error: unknown argument '%s'\n", arg);
1116                                         argument_errors = true;
1117                                 }
1118                         } else {
1119                                 fprintf(stderr, "error: unknown argument '%s'\n", arg);
1120                                 argument_errors = true;
1121                         }
1122                 } else {
1123                         filetype_t type = forced_filetype;
1124                         if (type == FILETYPE_AUTODETECT) {
1125                                 if (streq(arg, "-")) {
1126                                         /* - implicitly means C source file */
1127                                         type = FILETYPE_C;
1128                                 } else {
1129                                         const char *suffix = strrchr(arg, '.');
1130                                         /* Ensure there is at least one char before the suffix */
1131                                         if (suffix != NULL && suffix != arg) {
1132                                                 ++suffix;
1133                                                 type =
1134                                                         streq(suffix, "S")   ? FILETYPE_ASSEMBLER              :
1135                                                         streq(suffix, "a")   ? FILETYPE_OBJECT                 :
1136                                                         streq(suffix, "c")   ? FILETYPE_C                      :
1137                                                         streq(suffix, "cc")  ? FILETYPE_CXX                    :
1138                                                         streq(suffix, "cpp") ? FILETYPE_CXX                    :
1139                                                         streq(suffix, "cxx") ? FILETYPE_CXX                    :
1140                                                         streq(suffix, "h")   ? FILETYPE_C                      :
1141                                                         streq(suffix, "ir")  ? FILETYPE_IR                     :
1142                                                         streq(suffix, "o")   ? FILETYPE_OBJECT                 :
1143                                                         streq(suffix, "s")   ? FILETYPE_PREPROCESSED_ASSEMBLER :
1144                                                         streq(suffix, "so")  ? FILETYPE_OBJECT                 :
1145                                                         FILETYPE_AUTODETECT;
1146                                         }
1147                                 }
1148
1149                                 if (type == FILETYPE_AUTODETECT) {
1150                                         fprintf(stderr, "'%s': file format not recognized\n", arg);
1151                                         continue;
1152                                 }
1153                         }
1154
1155                         file_list_entry_t *entry
1156                                 = obstack_alloc(&file_obst, sizeof(entry[0]));
1157                         memset(entry, 0, sizeof(entry[0]));
1158                         entry->name = arg;
1159                         entry->type = type;
1160
1161                         if (last_file != NULL) {
1162                                 last_file->next = entry;
1163                         } else {
1164                                 files = entry;
1165                         }
1166                         last_file = entry;
1167                 }
1168         }
1169
1170         if (print_file_name_file != NULL) {
1171                 print_file_name(print_file_name_file);
1172                 return 0;
1173         }
1174
1175         if (files == NULL) {
1176                 fprintf(stderr, "error: no input files specified\n");
1177                 argument_errors = true;
1178         }
1179
1180         if (help_displayed) {
1181                 return !argument_errors;
1182         }
1183         if (argument_errors) {
1184                 usage(argv[0]);
1185                 return 1;
1186         }
1187
1188         /* we do the lowering in ast2firm */
1189         firm_opt.lower_bitfields = FALSE;
1190
1191         /* set the c_mode here, types depends on it */
1192         c_mode |= features_on;
1193         c_mode &= ~features_off;
1194
1195         gen_firm_init();
1196         init_symbol_table();
1197         init_types();
1198         init_typehash();
1199         init_basic_types();
1200         init_lexer();
1201         init_ast();
1202         init_parser();
1203         init_ast2firm();
1204         init_mangle();
1205
1206         if (do_timing)
1207                 timer_init();
1208
1209         if (construct_dep_target) {
1210                 if (outname != 0 && strlen(outname) >= 2) {
1211                         get_output_name(dep_target, sizeof(dep_target), outname, ".d");
1212                 } else {
1213                         get_output_name(dep_target, sizeof(dep_target), files->name, ".d");
1214                 }
1215         } else {
1216                 dep_target[0] = '\0';
1217         }
1218
1219         char outnamebuf[4096];
1220         if (outname == NULL) {
1221                 const char *filename = files->name;
1222
1223                 switch(mode) {
1224                 case BenchmarkParser:
1225                 case PrintAst:
1226                 case PrintFluffy:
1227                 case PrintCaml:
1228                 case PrintJna:
1229                 case LexTest:
1230                 case PreprocessOnly:
1231                 case ParseOnly:
1232                         outname = "-";
1233                         break;
1234                 case Compile:
1235                         get_output_name(outnamebuf, sizeof(outnamebuf), filename, ".s");
1236                         outname = outnamebuf;
1237                         break;
1238                 case CompileAssemble:
1239                         get_output_name(outnamebuf, sizeof(outnamebuf), filename, ".o");
1240                         outname = outnamebuf;
1241                         break;
1242                 case CompileDump:
1243                         get_output_name(outnamebuf, sizeof(outnamebuf), dumpfunction,
1244                                         ".vcg");
1245                         outname = outnamebuf;
1246                         break;
1247                 case CompileExportIR:
1248                         get_output_name(outnamebuf, sizeof(outnamebuf), filename, ".ir");
1249                         outname = outnamebuf;
1250                         break;
1251                 case CompileAssembleLink:
1252 #ifdef _WIN32
1253                         outname = "a.exe";
1254 #else
1255                         outname = "a.out";
1256 #endif
1257                         break;
1258                 }
1259         }
1260
1261         assert(outname != NULL);
1262
1263         FILE *out;
1264         if (streq(outname, "-")) {
1265                 out = stdout;
1266         } else {
1267                 out = fopen(outname, "w");
1268                 if (out == NULL) {
1269                         fprintf(stderr, "Couldn't open '%s' for writing: %s\n", outname,
1270                                         strerror(errno));
1271                         return 1;
1272                 }
1273         }
1274
1275         file_list_entry_t *file;
1276         for (file = files; file != NULL; file = file->next) {
1277                 char        asm_tempfile[1024];
1278                 const char *filename = file->name;
1279                 filetype_t  filetype = file->type;
1280
1281                 if (filetype == FILETYPE_OBJECT)
1282                         continue;
1283
1284                 FILE *in = NULL;
1285                 if (mode == LexTest) {
1286                         if (in == NULL)
1287                                 in = open_file(filename);
1288                         lextest(in, filename);
1289                         fclose(in);
1290                         exit(EXIT_SUCCESS);
1291                 }
1292
1293                 FILE *preprocessed_in = NULL;
1294                 filetype_t next_filetype = filetype;
1295                 switch (filetype) {
1296                         case FILETYPE_C:
1297                                 next_filetype = FILETYPE_PREPROCESSED_C;
1298                                 goto preprocess;
1299                         case FILETYPE_CXX:
1300                                 next_filetype = FILETYPE_PREPROCESSED_CXX;
1301                                 goto preprocess;
1302                         case FILETYPE_ASSEMBLER:
1303                                 next_filetype = FILETYPE_PREPROCESSED_ASSEMBLER;
1304                                 goto preprocess;
1305 preprocess:
1306                                 /* no support for input on FILE* yet */
1307                                 if (in != NULL)
1308                                         panic("internal compiler error: in for preprocessor != NULL");
1309
1310                                 preprocessed_in = preprocess(filename, filetype);
1311                                 if (mode == PreprocessOnly) {
1312                                         copy_file(out, preprocessed_in);
1313                                         int result = pclose(preprocessed_in);
1314                                         fclose(out);
1315                                         /* remove output file in case of error */
1316                                         if (out != stdout && result != EXIT_SUCCESS) {
1317                                                 unlink(outname);
1318                                         }
1319                                         return result;
1320                                 }
1321
1322                                 in = preprocessed_in;
1323                                 filetype = next_filetype;
1324                                 break;
1325
1326                         default:
1327                                 break;
1328                 }
1329
1330                 FILE *asm_out;
1331                 if (mode == Compile) {
1332                         asm_out = out;
1333                 } else {
1334                         asm_out = make_temp_file(asm_tempfile, sizeof(asm_tempfile), "ccs");
1335                 }
1336
1337                 if (in == NULL)
1338                         in = open_file(filename);
1339
1340                 /* preprocess and compile */
1341                 if (filetype == FILETYPE_PREPROCESSED_C) {
1342                         char const* invalid_mode;
1343                         switch (standard) {
1344                                 case STANDARD_ANSI:
1345                                 case STANDARD_C89:   c_mode = _C89;                break;
1346                                 /* TODO determine difference between these two */
1347                                 case STANDARD_C90:   c_mode = _C89;                break;
1348                                 case STANDARD_C99:   c_mode = _C89 | _C99;         break;
1349                                 case STANDARD_GNU89: c_mode = _C89 |        _GNUC; break;
1350
1351 default_c_warn:
1352                                         fprintf(stderr,
1353                                                         "warning: command line option \"-std=%s\" is not valid for C\n",
1354                                                         invalid_mode);
1355                                         /* FALLTHROUGH */
1356                                 case STANDARD_DEFAULT:
1357                                 case STANDARD_GNU99:   c_mode = _C89 | _C99 | _GNUC; break;
1358
1359                                 case STANDARD_CXX98:   invalid_mode = "c++98"; goto default_c_warn;
1360                                 case STANDARD_GNUXX98: invalid_mode = "gnu98"; goto default_c_warn;
1361                         }
1362                         goto do_parsing;
1363                 } else if (filetype == FILETYPE_PREPROCESSED_CXX) {
1364                         char const* invalid_mode;
1365                         switch (standard) {
1366                                 case STANDARD_C89:   invalid_mode = "c89";   goto default_cxx_warn;
1367                                 case STANDARD_C90:   invalid_mode = "c90";   goto default_cxx_warn;
1368                                 case STANDARD_C99:   invalid_mode = "c99";   goto default_cxx_warn;
1369                                 case STANDARD_GNU89: invalid_mode = "gnu89"; goto default_cxx_warn;
1370                                 case STANDARD_GNU99: invalid_mode = "gnu99"; goto default_cxx_warn;
1371
1372                                 case STANDARD_ANSI:
1373                                 case STANDARD_CXX98: c_mode = _CXX; break;
1374
1375 default_cxx_warn:
1376                                         fprintf(stderr,
1377                                                         "warning: command line option \"-std=%s\" is not valid for C++\n",
1378                                                         invalid_mode);
1379                                 case STANDARD_DEFAULT:
1380                                 case STANDARD_GNUXX98: c_mode = _CXX | _GNUC; break;
1381                         }
1382
1383 do_parsing:
1384                         c_mode |= features_on;
1385                         c_mode &= ~features_off;
1386
1387                         /* do the actual parsing */
1388                         ir_timer_t *t_parsing = ir_timer_new();
1389                         timer_register(t_parsing, "Frontend: Parsing");
1390                         timer_push(t_parsing);
1391                         init_tokens();
1392                         translation_unit_t *const unit = do_parsing(in, filename);
1393                         timer_pop(t_parsing);
1394
1395                         /* prints the AST even if errors occurred */
1396                         if (mode == PrintAst) {
1397                                 print_to_file(out);
1398                                 print_ast(unit);
1399                         }
1400
1401                         if (error_count > 0) {
1402                                 /* parsing failed because of errors */
1403                                 fprintf(stderr, "%u error(s), %u warning(s)\n", error_count,
1404                                         warning_count);
1405                                 result = EXIT_FAILURE;
1406                                 continue;
1407                         } else if (warning_count > 0) {
1408                                 fprintf(stderr, "%u warning(s)\n", warning_count);
1409                         }
1410
1411                         if (in == preprocessed_in) {
1412                                 int pp_result = pclose(preprocessed_in);
1413                                 if (pp_result != EXIT_SUCCESS) {
1414                                         /* remove output file */
1415                                         if (out != stdout)
1416                                                 unlink(outname);
1417                                         exit(EXIT_FAILURE);
1418                                 }
1419                         }
1420
1421                         if (mode == BenchmarkParser) {
1422                                 return result;
1423                         } else if (mode == PrintFluffy) {
1424                                 write_fluffy_decls(out, unit);
1425                                 continue;
1426                         } else if (mode == PrintCaml) {
1427                                 write_caml_decls(out, unit);
1428                                 continue;
1429                         } else if (mode == PrintJna) {
1430                                 write_jna_decls(out, unit);
1431                                 continue;
1432                         }
1433
1434                         /* build the firm graph */
1435                         ir_timer_t *t_construct = ir_timer_new();
1436                         timer_register(t_construct, "Frontend: Graph construction");
1437                         timer_push(t_construct);
1438                         translation_unit_to_firm(unit);
1439                         timer_pop(t_construct);
1440
1441 graph_built:
1442                         if (mode == ParseOnly) {
1443                                 continue;
1444                         }
1445
1446                         if (mode == CompileDump) {
1447                                 /* find irg */
1448                                 ident    *id     = new_id_from_str(dumpfunction);
1449                                 ir_graph *irg    = NULL;
1450                                 int       n_irgs = get_irp_n_irgs();
1451                                 for (int i = 0; i < n_irgs; ++i) {
1452                                         ir_graph *tirg   = get_irp_irg(i);
1453                                         ident    *irg_id = get_entity_ident(get_irg_entity(tirg));
1454                                         if (irg_id == id) {
1455                                                 irg = tirg;
1456                                                 break;
1457                                         }
1458                                 }
1459
1460                                 if (irg == NULL) {
1461                                         fprintf(stderr, "No graph for function '%s' found\n",
1462                                                 dumpfunction);
1463                                         exit(1);
1464                                 }
1465
1466                                 dump_ir_block_graph_file(irg, out);
1467                                 fclose(out);
1468                                 exit(0);
1469                         }
1470
1471                         if (mode == CompileExportIR) {
1472                                 fclose(out);
1473                                 ir_export(outname);
1474                                 exit(0);
1475                         }
1476
1477                         gen_firm_finish(asm_out, filename, /*c_mode=*/1,
1478                                         have_const_functions);
1479                         if (asm_out != out) {
1480                                 fclose(asm_out);
1481                         }
1482                 } else if (filetype == FILETYPE_IR) {
1483                         fclose(in);
1484                         ir_import(filename);
1485                         goto graph_built;
1486                 } else if (filetype == FILETYPE_PREPROCESSED_ASSEMBLER) {
1487                         copy_file(asm_out, in);
1488                         if (in == preprocessed_in) {
1489                                 int pp_result = pclose(preprocessed_in);
1490                                 if (pp_result != EXIT_SUCCESS) {
1491                                         /* remove output in error case */
1492                                         if (out != stdout)
1493                                                 unlink(outname);
1494                                         return pp_result;
1495                                 }
1496                         }
1497                         if (asm_out != out) {
1498                                 fclose(asm_out);
1499                         }
1500                 }
1501
1502                 if (mode == Compile)
1503                         continue;
1504
1505                 /* if we're here then we have preprocessed assembly */
1506                 filename = asm_tempfile;
1507                 filetype = FILETYPE_PREPROCESSED_ASSEMBLER;
1508
1509                 /* assemble */
1510                 if (filetype == FILETYPE_PREPROCESSED_ASSEMBLER) {
1511                         char        temp[1024];
1512                         const char *filename_o;
1513                         if (mode == CompileAssemble) {
1514                                 fclose(out);
1515                                 filename_o = outname;
1516                         } else {
1517                                 FILE *tempf = make_temp_file(temp, sizeof(temp), "cco");
1518                                 fclose(tempf);
1519                                 filename_o = temp;
1520                         }
1521
1522                         assemble(filename_o, filename);
1523
1524                         size_t len = strlen(filename_o) + 1;
1525                         filename = obstack_copy(&file_obst, filename_o, len);
1526                         filetype = FILETYPE_OBJECT;
1527                 }
1528
1529                 /* ok we're done here, process next file */
1530                 file->name = filename;
1531                 file->type = filetype;
1532         }
1533
1534         if (result != EXIT_SUCCESS) {
1535                 if (out != stdout)
1536                         unlink(outname);
1537                 return result;
1538         }
1539
1540         /* link program file */
1541         if (mode == CompileAssembleLink) {
1542                 obstack_1grow(&ldflags_obst, '\0');
1543                 const char *flags = obstack_finish(&ldflags_obst);
1544
1545                 /* construct commandline */
1546                 const char *linker = getenv("CPARSER_LINK");
1547                 if (linker == NULL)
1548                         linker = LINKER;
1549                 obstack_printf(&file_obst, "%s", linker);
1550                 for (file_list_entry_t *entry = files; entry != NULL;
1551                                 entry = entry->next) {
1552                         if (entry->type != FILETYPE_OBJECT)
1553                                 continue;
1554
1555                         add_flag(&file_obst, "%s", entry->name);
1556                 }
1557
1558                 add_flag(&file_obst, "-o");
1559                 add_flag(&file_obst, outname);
1560                 obstack_printf(&file_obst, "%s", flags);
1561                 obstack_1grow(&file_obst, '\0');
1562
1563                 char *commandline = obstack_finish(&file_obst);
1564
1565                 if (verbose) {
1566                         puts(commandline);
1567                 }
1568                 int err = system(commandline);
1569                 if (err != EXIT_SUCCESS) {
1570                         fprintf(stderr, "linker reported an error\n");
1571                         exit(1);
1572                 }
1573         }
1574
1575         if (do_timing)
1576                 timer_term(stderr);
1577
1578         obstack_free(&cppflags_obst, NULL);
1579         obstack_free(&ldflags_obst, NULL);
1580         obstack_free(&file_obst, NULL);
1581
1582         exit_mangle();
1583         exit_ast2firm();
1584         exit_parser();
1585         exit_ast();
1586         exit_lexer();
1587         exit_typehash();
1588         exit_types();
1589         exit_tokens();
1590         exit_symbol_table();
1591         return 0;
1592 }