nsz Git - cparser/blob - main.c

   1 /*
   2  * This file is part of cparser.
   3  * Copyright (C) 2007-2008 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
  54 #else
  55 #include <unistd.h>
  56 #define HAVE_MKSTEMP
  57 #endif
  58
  59 #ifndef WITH_LIBCORE
  60 #define WITH_LIBCORE
  61 #endif
  62
  63 #include <libfirm/firm.h>
  64 #include <libfirm/be.h>
  65
  66 #include "lexer.h"
  67 #include "token_t.h"
  68 #include "types.h"
  69 #include "type_hash.h"
  70 #include "parser.h"
  71 #include "ast2firm.h"
  72 #include "diagnostic.h"
  73 #include "lang_features.h"
  74 #include "driver/firm_opt.h"
  75 #include "driver/firm_cmdline.h"
  76 #include "adt/error.h"
  77 #include "write_fluffy.h"
  78 #include "write_caml.h"
  79 #include "revision.h"
  80 #include "warning.h"
  81
  82 #ifndef PREPROCESSOR
  83 #ifdef __APPLE__
  84 #define PREPROCESSOR "gcc -E -std=c99 -U__WCHAR_TYPE__ -D__WCHAR_TYPE__=int -U__SIZE_TYPE__ -D__SIZE_TYPE__=unsigned\\ long -m32 -U__STRICT_ANSI__"
  85 #else
  86 #define PREPROCESSOR "cpp -std=c99 -U__WCHAR_TYPE__ -D__WCHAR_TYPE__=int -U__SIZE_TYPE__ -D__SIZE_TYPE__=unsigned\\ long -m32 -U__STRICT_ANSI__"
  87 #endif
  88 #endif
  89
  90 #ifndef LINKER
  91 #define LINKER    "gcc -m32"
  92 #endif
  93
  94 #ifndef ASSEMBLER
  95 #ifdef __APPLE__
  96 #define ASSEMBLER "gcc -c -xassembler"
  97 #else
  98 #define ASSEMBLER "as --32"
  99 #endif
 100 #endif
 101
 102 /** The current c mode/dialect. */
 103 unsigned int c_mode = _C89|_C99|_GNUC;
 104
 105 /** The 'machine size', 16, 32 or 64 bit, 32bit is the default. */
 106 unsigned int machine_size = 32;
 107
 108 /** true if the char type is signed. */
 109 bool char_is_signed = true;
 110
 111 /** true for strict language checking. */
 112 bool strict_mode = false;
 113
 114 /** use builtins for some libc functions */
 115 bool use_builtins = false;
 116
 117 /* to switch on printing of implicit casts */
 118 extern bool print_implicit_casts;
 119
 120 /* to switch on printing of parenthesis to indicate operator precedence */
 121 extern bool print_parenthesis;
 122
 123 static int             verbose;
 124 static struct obstack  cppflags_obst, ldflags_obst;
 125 static char            dep_target[1024];
 126 static const char     *outname;
 127
 128 typedef struct file_list_entry_t file_list_entry_t;
 129
 130 typedef enum filetype_t {
 131         FILETYPE_AUTODETECT,
 132         FILETYPE_C,
 133         FILETYPE_PREPROCESSED_C,
 134         FILETYPE_ASSEMBLER,
 135         FILETYPE_PREPROCESSED_ASSEMBLER,
 136         FILETYPE_OBJECT,
 137         FILETYPE_UNKNOWN
 138 } filetype_t;
 139
 140 struct file_list_entry_t {
 141         const char        *name; /**< filename or NULL for stdin */
 142         filetype_t         type;
 143         file_list_entry_t *next;
 144 };
 145
 146 #if defined(_DEBUG) || defined(FIRM_DEBUG)
 147 /**
 148  * Debug printf implementation.
 149  *
 150  * @param fmt  printf style format parameter
 151  */
 152 void dbg_printf(const char *fmt, ...)
 153 {
 154         va_list list;
 155
 156         if (firm_dump.debug_print) {
 157                 va_start(list, fmt);
 158                 vprintf(fmt, list);
 159                 va_end(list);
 160         }  /* if */
 161 }
 162 #endif /* defined(_DEBUG) || defined(FIRM_DEBUG) */
 163
 164 static void initialize_firm(void)
 165 {
 166         firm_early_init();
 167
 168         dump_consts_local(1);
 169         dump_keepalive_edges(1);
 170 }
 171
 172 static void get_output_name(char *buf, size_t buflen, const char *inputname,
 173                             const char *newext)
 174 {
 175         size_t last_dot = 0xffffffff;
 176         size_t i = 0;
 177
 178         if(inputname == NULL) {
 179                 snprintf(buf, buflen, "a%s", newext);
 180                 return;
 181         }
 182
 183         for(const char *c = inputname; *c != 0; ++c) {
 184                 if(*c == '.')
 185                         last_dot = i;
 186                 ++i;
 187         }
 188         if(last_dot == 0xffffffff)
 189                 last_dot = i;
 190
 191         if(last_dot >= buflen)
 192                 panic("filename too long");
 193         memcpy(buf, inputname, last_dot);
 194
 195         size_t extlen = strlen(newext) + 1;
 196         if(extlen + last_dot >= buflen)
 197                 panic("filename too long");
 198         memcpy(buf+last_dot, newext, extlen);
 199 }
 200
 201 #include "builtins.h"
 202
 203 static translation_unit_t *do_parsing(FILE *const in, const char *const input_name)
 204 {
 205         start_parsing();
 206
 207         if (use_builtins) {
 208                 lexer_open_buffer(builtins, sizeof(builtins)-1, "<builtin>");
 209                 parse();
 210         }
 211
 212         lexer_open_stream(in, input_name);
 213         parse();
 214
 215         translation_unit_t *unit = finish_parsing();
 216         return unit;
 217 }
 218
 219 static void lextest(FILE *in, const char *fname)
 220 {
 221         lexer_open_stream(in, fname);
 222
 223         do {
 224                 lexer_next_preprocessing_token();
 225                 print_token(stdout, &lexer_token);
 226                 puts("");
 227         } while(lexer_token.type != T_EOF);
 228 }
 229
 230 static void add_flag(struct obstack *obst, const char *format, ...)
 231 {
 232         va_list ap;
 233         va_start(ap, format);
 234
 235         char buf[4096];
 236         vsnprintf(buf, sizeof(buf), format, ap);
 237
 238         /* escape stuff... */
 239         obstack_1grow(obst, ' ');
 240         for (char *c = buf; *c != '\0'; ++c) {
 241                 switch(*c) {
 242                 case '"':
 243                 case '\'':
 244                 case '`':
 245                 case ' ':
 246                 case '\t':
 247                 case '\n':
 248                 case '\r':
 249                 case '\\':
 250                 case '$':
 251                 case '(':
 252                 case ')':
 253                         obstack_1grow(obst, '\\');
 254                         /* fallthrough */
 255                 default:
 256                         obstack_1grow(obst, *c);
 257                         break;
 258                 }
 259         }
 260
 261         va_end(ap);
 262 }
 263
 264 static FILE *preprocess(const char *fname)
 265 {
 266         obstack_1grow(&cppflags_obst, '\0');
 267         const char *flags = obstack_finish(&cppflags_obst);
 268
 269         obstack_printf(&cppflags_obst, "%s", PREPROCESSOR);
 270         if (dep_target[0] != '\0') {
 271                 add_flag(&cppflags_obst, "-MF");
 272                 add_flag(&cppflags_obst, "%s", dep_target);
 273                 if (outname != NULL) {
 274                                 add_flag(&cppflags_obst, "-MQ");
 275                                 add_flag(&cppflags_obst, "%s", outname);
 276                 }
 277         }
 278         if (flags[0] != '\0') {
 279                 obstack_printf(&cppflags_obst, " %s", flags);
 280         }
 281         add_flag(&cppflags_obst, "%s", fname);
 282
 283         obstack_1grow(&cppflags_obst, '\0');
 284         const char *buf = obstack_finish(&cppflags_obst);
 285         if(verbose) {
 286                 puts(buf);
 287         }
 288
 289         FILE *f = popen(buf, "r");
 290         if(f == NULL) {
 291                 fprintf(stderr, "invoking preprocessor failed\n");
 292                 exit(1);
 293         }
 294
 295         return f;
 296 }
 297
 298 static void assemble(const char *out, const char *in)
 299 {
 300         char buf[4096];
 301
 302         snprintf(buf, sizeof(buf), "%s %s -o %s", ASSEMBLER, in, out);
 303         if(verbose) {
 304                 puts(buf);
 305         }
 306
 307         int err = system(buf);
 308         if(err != 0) {
 309                 fprintf(stderr, "assembler reported an error\n");
 310                 exit(1);
 311         }
 312 }
 313
 314 static const char *try_dir(const char *dir)
 315 {
 316         if(dir == NULL)
 317                 return dir;
 318         if(access(dir, R_OK | W_OK | X_OK) == 0)
 319                 return dir;
 320         return NULL;
 321 }
 322
 323 static const char *get_tempdir(void)
 324 {
 325         static const char *tmpdir = NULL;
 326
 327         if(tmpdir != NULL)
 328                 return tmpdir;
 329
 330         if(tmpdir == NULL)
 331                 tmpdir = try_dir(getenv("TMPDIR"));
 332         if(tmpdir == NULL)
 333                 tmpdir = try_dir(getenv("TMP"));
 334         if(tmpdir == NULL)
 335                 tmpdir = try_dir(getenv("TEMP"));
 336
 337 #ifdef P_tmpdir
 338         if(tmpdir == NULL)
 339                 tmpdir = try_dir(P_tmpdir);
 340 #endif
 341
 342         if(tmpdir == NULL)
 343                 tmpdir = try_dir("/var/tmp");
 344         if(tmpdir == NULL)
 345                 tmpdir = try_dir("/usr/tmp");
 346         if(tmpdir == NULL)
 347                 tmpdir = try_dir("/tmp");
 348
 349         if(tmpdir == NULL)
 350                 tmpdir = ".";
 351
 352         return tmpdir;
 353 }
 354
 355 #ifndef HAVE_MKSTEMP
 356 /* cheap and nasty mkstemp replacement */
 357 static int mkstemp(char *templ)
 358 {
 359         mktemp(templ);
 360         return open(templ, O_RDWR|O_CREAT|O_EXCL|O_BINARY, 0600);
 361 }
 362 #endif
 363
 364 /**
 365  * an own version of tmpnam, which: writes in a buffer, emits no warnings
 366  * during linking (like glibc/gnu ld do for tmpnam)...
 367  */
 368 static FILE *make_temp_file(char *buffer, size_t buflen, const char *prefix)
 369 {
 370         const char *tempdir = get_tempdir();
 371
 372         snprintf(buffer, buflen, "%s/%sXXXXXX", tempdir, prefix);
 373
 374         int fd = mkstemp(buffer);
 375         if(fd == -1) {
 376                 fprintf(stderr, "couldn't create temporary file: %s\n",
 377                         strerror(errno));
 378                 exit(1);
 379         }
 380         FILE *out = fdopen(fd, "w");
 381         if(out == NULL) {
 382                 fprintf(stderr, "couldn't create temporary file FILE*\n");
 383                 exit(1);
 384         }
 385
 386         return out;
 387 }
 388
 389 /**
 390  * Do the necessary lowering for compound parameters.
 391  */
 392 void lower_compound_params(void)
 393 {
 394         lower_params_t params;
 395
 396         params.def_ptr_alignment    = 4;
 397         params.flags                = LF_COMPOUND_RETURN | LF_RETURN_HIDDEN;
 398         params.hidden_params        = ADD_HIDDEN_ALWAYS_IN_FRONT;
 399         params.find_pointer_type    = NULL;
 400         params.ret_compound_in_regs = NULL;
 401         lower_calls_with_compounds(&params);
 402 }
 403
 404 typedef enum compile_mode_t {
 405         BenchmarkParser,
 406         PreprocessOnly,
 407         ParseOnly,
 408         Compile,
 409         CompileDump,
 410         CompileAssemble,
 411         CompileAssembleLink,
 412         LexTest,
 413         PrintAst,
 414         PrintFluffy,
 415         PrintCaml
 416 } compile_mode_t;
 417
 418 static void usage(const char *argv0)
 419 {
 420         fprintf(stderr, "Usage %s input [-o output] [-c]\n", argv0);
 421 }
 422
 423 static void print_cparser_version(void) {
 424         firm_version_t ver;
 425         firm_get_version(&ver);
 426
 427         printf("cparser (%s) using libFirm (%u.%u",
 428                 cparser_REVISION, ver.major, ver.minor);
 429         if(ver.revision[0] != 0) {
 430                 putchar(' ');
 431                 fputs(ver.revision, stdout);
 432         }
 433         if(ver.build[0] != 0) {
 434                 putchar(' ');
 435                 fputs(ver.build, stdout);
 436         }
 437         puts(")\n");
 438 }
 439
 440 static void set_be_option(const char *arg)
 441 {
 442         int res = firm_be_option(arg);
 443         (void) res;
 444         assert(res);
 445 }
 446
 447 static void set_option(const char *arg)
 448 {
 449         int res = firm_option(arg);
 450         (void) res;
 451         assert(res);
 452 }
 453
 454 static void copy_file(FILE *dest, FILE *input)
 455 {
 456         char buf[16384];
 457
 458         while (!feof(input) && !ferror(dest)) {
 459                 size_t read = fread(buf, 1, sizeof(buf), input);
 460                 if(fwrite(buf, 1, read, dest) != read) {
 461                         perror("couldn't write output");
 462                 }
 463         }
 464 }
 465
 466 static inline bool streq(char const* a, char const* b)
 467 {
 468         return strcmp(a, b) == 0;
 469 }
 470
 471 static inline bool strstart(char const* str, char const* start)
 472 {
 473         do {
 474                 if (*start == '\0')
 475                         return true;
 476         } while (*str++ == *start++);
 477         return false;
 478 }
 479
 480 static FILE *open_file(const char *filename)
 481 {
 482         if (streq(filename, "-")) {
 483                 return stdin;
 484         }
 485
 486         FILE *in = fopen(filename, "r");
 487         if(in == NULL) {
 488                 fprintf(stderr, "Couldn't open '%s': %s\n", filename,
 489                                 strerror(errno));
 490                 exit(1);
 491         }
 492
 493         return in;
 494 }
 495
 496 static filetype_t get_filetype_from_string(const char *string)
 497 {
 498         if (streq(string, "c") || streq(string, "c-header"))
 499                 return FILETYPE_C;
 500         if (streq(string, "assembler"))
 501                 return FILETYPE_PREPROCESSED_ASSEMBLER;
 502         if (streq(string, "assembler-with-cpp"))
 503                 return FILETYPE_ASSEMBLER;
 504         if (streq(string, "none"))
 505                 return FILETYPE_AUTODETECT;
 506
 507         return FILETYPE_UNKNOWN;
 508 }
 509
 510 int main(int argc, char **argv)
 511 {
 512         initialize_firm();
 513
 514         const char        *dumpfunction         = NULL;
 515         compile_mode_t     mode                 = CompileAssembleLink;
 516         int                opt_level            = 1;
 517         int                result               = EXIT_SUCCESS;
 518         char               cpu_arch[16]         = "ia32";
 519         file_list_entry_t *files                = NULL;
 520         file_list_entry_t *last_file            = NULL;
 521         bool               construct_dep_target = false;
 522         struct obstack     file_obst;
 523
 524         obstack_init(&cppflags_obst);
 525         obstack_init(&ldflags_obst);
 526         obstack_init(&file_obst);
 527
 528 #define GET_ARG_AFTER(def, args)                                             \
 529         def = &arg[sizeof(args)-1];                                              \
 530         if(def[0] == '\0') {                                                     \
 531                 ++i;                                                                 \
 532                 if(i >= argc) {                                                      \
 533                         fprintf(stderr, "error: expected argument after '" args "'\n");  \
 534                         argument_errors = true;                                          \
 535                         break;                                                           \
 536                 }                                                                    \
 537                 def = argv[i];                                                       \
 538                 if(def[0] == '-' && def[1] != '\0') {                                \
 539                         fprintf(stderr, "error: expected argument after '" args "'\n");  \
 540                         argument_errors = true;                                          \
 541                         continue;                                                        \
 542                 }                                                                    \
 543         }
 544
 545 #define SINGLE_OPTION(ch) (option[0] == (ch) && option[1] == '\0')
 546
 547         /* early options parsing (find out optimisation level) */
 548         for(int i = 1; i < argc; ++i) {
 549                 const char *arg = argv[i];
 550                 if(arg[0] != '-')
 551                         continue;
 552
 553                 const char *option = &arg[1];
 554                 if(option[0] == 'O') {
 555                         sscanf(&option[1], "%d", &opt_level);
 556                 }
 557         }
 558
 559         /* apply optimisation level */
 560         switch(opt_level) {
 561         case 0:
 562                 set_option("no-opt");
 563                 break;
 564         case 1:
 565                 set_option("no-inline");
 566                 break;
 567         default:
 568         case 4:
 569                 set_option("strict-aliasing");
 570                 /* fallthrough */
 571         case 3:
 572                 set_option("cond-eval");
 573                 set_option("if-conv");
 574                 use_builtins = true;
 575                 /* fallthrough */
 576         case 2:
 577                 set_option("inline");
 578                 set_option("deconv");
 579                 set_be_option("omitfp");
 580                 break;
 581         }
 582
 583         /* parse rest of options */
 584         filetype_t  forced_filetype = FILETYPE_AUTODETECT;
 585         bool        help_displayed  = false;
 586         bool        argument_errors = false;
 587         for(int i = 1; i < argc; ++i) {
 588                 const char *arg = argv[i];
 589                 if(arg[0] == '-' && arg[1] != 0) {
 590                         /* an option */
 591                         const char *option = &arg[1];
 592                         if(option[0] == 'o') {
 593                                 GET_ARG_AFTER(outname, "-o");
 594                         } else if(option[0] == 'g') {
 595                                 set_be_option("debuginfo=stabs");
 596                                 set_be_option("omitfp=no");
 597                                 set_be_option("ia32-nooptcc=yes");
 598                         } else if(SINGLE_OPTION('c')) {
 599                                 mode = CompileAssemble;
 600                         } else if(SINGLE_OPTION('E')) {
 601                                 mode = PreprocessOnly;
 602                         } else if(SINGLE_OPTION('S')) {
 603                                 mode = Compile;
 604                         } else if(option[0] == 'O') {
 605                                 continue;
 606                         } else if(option[0] == 'I') {
 607                                 const char *opt;
 608                                 GET_ARG_AFTER(opt, "-I");
 609                                 add_flag(&cppflags_obst, "-I%s", opt);
 610                         } else if(option[0] == 'D') {
 611                                 const char *opt;
 612                                 GET_ARG_AFTER(opt, "-D");
 613                                 add_flag(&cppflags_obst, "-D%s", opt);
 614                         } else if(option[0] == 'U') {
 615                                 const char *opt;
 616                                 GET_ARG_AFTER(opt, "-U");
 617                                 add_flag(&cppflags_obst, "-U%s", opt);
 618                         } else if(option[0] == 'l') {
 619                                 const char *opt;
 620                                 GET_ARG_AFTER(opt, "-l");
 621                                 add_flag(&ldflags_obst, "-l%s", opt);
 622                         } else if(option[0] == 'L') {
 623                                 const char *opt;
 624                                 GET_ARG_AFTER(opt, "-L");
 625                                 add_flag(&ldflags_obst, "-L%s", opt);
 626                         } else if(SINGLE_OPTION('v')) {
 627                                 verbose = 1;
 628                         } else if(SINGLE_OPTION('w')) {
 629                                 inhibit_all_warnings = true;
 630                         } else if(option[0] == 'x') {
 631                                 const char *opt;
 632                                 GET_ARG_AFTER(opt, "-x");
 633                                 forced_filetype = get_filetype_from_string(opt);
 634                                 if (forced_filetype == FILETYPE_UNKNOWN) {
 635                                         fprintf(stderr, "Unknown language '%s'\n", opt);
 636                                         argument_errors = true;
 637                                 }
 638                         } else if (streq(option, "M")) {
 639                                 mode = PreprocessOnly;
 640                                 add_flag(&cppflags_obst, "-M");
 641                         } else if (streq(option, "MMD") ||
 642                                    streq(option, "MD")) {
 643                             construct_dep_target = true;
 644                                 add_flag(&cppflags_obst, "-%s", option);
 645                         } else if(streq(option, "MM")  ||
 646                                    streq(option, "MP")) {
 647                                 add_flag(&cppflags_obst, "-%s", option);
 648                         } else if (streq(option, "MT") ||
 649                                    streq(option, "MQ") ||
 650                                    streq(option, "MF")) {
 651                                 const char *opt;
 652                                 GET_ARG_AFTER(opt, "-MT");
 653                                 add_flag(&cppflags_obst, "-%s", option);
 654                                 add_flag(&cppflags_obst, "%s", opt);
 655                         } else if (streq(option, "pipe")) {
 656                                 /* here for gcc compatibility */
 657                         } else if (option[0] == 'f') {
 658                                 char const *orig_opt;
 659                                 GET_ARG_AFTER(orig_opt, "-f");
 660
 661                                 if (strstart(orig_opt, "align-loops=") ||
 662                                     strstart(orig_opt, "align-jumps=") ||
 663                                     strstart(orig_opt, "align-functions=")) {
 664                                         fprintf(stderr, "ignoring gcc option '-f%s'\n", orig_opt);
 665                                 } else {
 666                                         char const *opt         = orig_opt;
 667                                         bool        truth_value = true;
 668                                         if (opt[0] == 'n' && opt[1] == 'o' && opt[2] == '-') {
 669                                                 truth_value = false;
 670                                                 opt += 3;
 671                                         }
 672
 673                                         if (streq(opt, "dollars-in-identifiers")) {
 674                                                 allow_dollar_in_symbol = truth_value;
 675                                         } else if (streq(opt, "short-wchar")) {
 676                                                 opt_short_wchar_t = truth_value;
 677                                         } else if (streq(opt, "syntax-only")) {
 678                                                 mode = truth_value ? ParseOnly : CompileAssembleLink;
 679                                         } else if (streq(opt, "omit-frame-pointer")) {
 680                                                 set_be_option(truth_value ? "omitfp" : "omitfp=no");
 681                                         } else if (streq(opt, "strength-reduce")) {
 682                                                 firm_option(truth_value ? "strength-red" : "no-strength-red");
 683                                         } else if (streq(opt, "fast-math")               ||
 684                                                    streq(opt, "jump-tables")             ||
 685                                                    streq(opt, "unroll-loops")            ||
 686                                                    streq(opt, "expensive-optimizations") ||
 687                                                    streq(opt, "common")                  ||
 688                                                    streq(opt, "PIC")                     ||
 689                                                    streq(opt, "align-loops")             ||
 690                                                    streq(opt, "align-jumps")             ||
 691                                                    streq(opt, "align-functions")) {
 692                                                 fprintf(stderr, "ignoring gcc option '-f%s'\n", orig_opt);
 693                                         } else {
 694                                                 int res = firm_option(orig_opt);
 695                                                 if (res == 0) {
 696                                                         fprintf(stderr, "error: unknown Firm option '-f%s'\n",
 697                                                                 orig_opt);
 698                                                         argument_errors = true;
 699                                                         continue;
 700                                                 } else if (res == -1) {
 701                                                         help_displayed = true;
 702                                                 }
 703                                         }
 704                                 }
 705                         } else if (option[0] == 'b') {
 706                                 const char *opt;
 707                                 GET_ARG_AFTER(opt, "-b");
 708                                 int res = firm_be_option(opt);
 709                                 if (res == 0) {
 710                                         fprintf(stderr, "error: unknown Firm backend option '-b %s'\n",
 711                                                 opt);
 712                                         argument_errors = true;
 713                                 } else if (res == -1) {
 714                                         help_displayed = true;
 715                                 } else if (strstart(opt, "isa=")) {
 716                                         strncpy(cpu_arch, opt, sizeof(cpu_arch));
 717                                 }
 718                         } else if (option[0] == 'W') {
 719                                 if (strstart(option + 1, "l,")) // a gcc-style linker option
 720                                 {
 721                                         const char *opt;
 722                                         GET_ARG_AFTER(opt, "-Wl,");
 723                                         add_flag(&ldflags_obst, "-Wl,%s", opt);
 724                                 }
 725                                 else set_warning_opt(&option[1]);
 726                         } else if(option[0] == 'm') {
 727                                 /* -m options */
 728                                 const char *opt;
 729                                 char arch_opt[64];
 730
 731                                 GET_ARG_AFTER(opt, "-m");
 732                                 if (strstart(opt, "arch=")) {
 733                                         GET_ARG_AFTER(opt, "-march=");
 734                                         snprintf(arch_opt, sizeof(arch_opt), "%s-arch=%s", cpu_arch, opt);
 735                                         int res = firm_be_option(arch_opt);
 736                                         if (res == 0)
 737                                                 argument_errors = true;
 738                                         else {
 739                                                 snprintf(arch_opt, sizeof(arch_opt), "%s-opt=%s", cpu_arch, opt);
 740                                                 int res = firm_be_option(arch_opt);
 741                                                 if (res == 0)
 742                                                         argument_errors = true;
 743                                         }
 744                                 } else if (strstart(opt, "tune=")) {
 745                                         GET_ARG_AFTER(opt, "-mtune=");
 746                                         snprintf(arch_opt, sizeof(arch_opt), "%s-opt=%s", cpu_arch, opt);
 747                                         int res = firm_be_option(arch_opt);
 748                                         if (res == 0)
 749                                                 argument_errors = true;
 750                                 } else if (strstart(opt, "cpu=")) {
 751                                         GET_ARG_AFTER(opt, "-mcpu=");
 752                                         snprintf(arch_opt, sizeof(arch_opt), "%s-arch=%s", cpu_arch, opt);
 753                                         int res = firm_be_option(arch_opt);
 754                                         if (res == 0)
 755                                                 argument_errors = true;
 756                                 } else if (strstart(opt, "fpmath=")) {
 757                                         GET_ARG_AFTER(opt, "-mfpmath=");
 758                                         if (streq(opt, "387"))
 759                                                 opt = "x87";
 760                                         else if (streq(opt, "sse"))
 761                                                 opt = "sse2";
 762                                         else {
 763                                                 fprintf(stderr, "error: option -mfpumath supports only 387 or sse\n");
 764                                                 argument_errors = true;
 765                                         }
 766                                         if(!argument_errors) {
 767                                                 snprintf(arch_opt, sizeof(arch_opt), "%s-fpunit=%s", cpu_arch, opt);
 768                                                 int res = firm_be_option(arch_opt);
 769                                                 if (res == 0)
 770                                                         argument_errors = true;
 771                                         }
 772                                 } else if (strstart(opt, "preferred-stack-boundary=")) {
 773                                         GET_ARG_AFTER(opt, "-mpreferred-stack-boundary=");
 774                                         snprintf(arch_opt, sizeof(arch_opt), "%s-stackalign=%s", cpu_arch, opt);
 775                                         int res = firm_be_option(arch_opt);
 776                                         if (res == 0)
 777                                                 argument_errors = true;
 778                                 } else if (streq(opt, "omit-leaf-frame-pointer")) {
 779                                         set_be_option("omitleaffp=1");
 780                                 } else if (streq(opt, "no-omit-leaf-frame-pointer")) {
 781                                         set_be_option("omitleaffp=0");
 782                                 } else {
 783                                         char *endptr;
 784                                         long int value = strtol(opt, &endptr, 10);
 785                                         if (*endptr != '\0') {
 786                                                 fprintf(stderr, "error: wrong option '-m %s'\n",  opt);
 787                                                 argument_errors = true;
 788                                         }
 789                                         if (value != 16 && value != 32 && value != 64) {
 790                                                 fprintf(stderr, "error: option -m supports only 16, 32 or 64\n");
 791                                                 argument_errors = true;
 792                                         } else {
 793                                                 machine_size = (unsigned int)value;
 794                                         }
 795                                 }
 796                         } else if (streq(option, "pg")) {
 797                                 set_be_option("gprof");
 798                                 add_flag(&ldflags_obst, "-pg");
 799                         } else if (streq(option, "pedantic") ||
 800                                    streq(option, "ansi")) {
 801                                 fprintf(stderr, "warning: ignoring gcc option '%s'\n", arg);
 802                         } else if (streq(option, "shared")) {
 803                                 add_flag(&ldflags_obst, "-shared");
 804                         } else if (strstart(option, "std=")) {
 805                                 if (streq(&option[4], "c99")) {
 806                                         c_mode = _C89|_C99;
 807                                 } else if (streq(&option[4], "c89")) {
 808                                         c_mode = _C89;
 809                                 } else if (streq(&option[4], "gnu99")) {
 810                                         c_mode = _C89|_C99|_GNUC;
 811                                 } else if (streq(&option[4], "microsoft")) {
 812                                         c_mode = _C89|_C99|_MS;
 813                                 } else
 814                                         fprintf(stderr, "warning: ignoring gcc option '%s'\n", arg);
 815                         } else if (streq(option, "version")) {
 816                                 print_cparser_version();
 817                         } else if (option[0] == '-') {
 818                                 /* double dash option */
 819                                 ++option;
 820                                 if (streq(option, "gcc")) {
 821                                         c_mode |= _GNUC;
 822                                 } else if (streq(option, "no-gcc")) {
 823                                         c_mode &= ~_GNUC;
 824                                 } else if (streq(option, "ms")) {
 825                                         c_mode |= _MS;
 826                                 } else if (streq(option, "no-ms")) {
 827                                         c_mode &= ~_MS;
 828                                 } else if (streq(option, "signed-chars")) {
 829                                         char_is_signed = true;
 830                                 } else if (streq(option, "unsigned-chars")) {
 831                                         char_is_signed = false;
 832                                 } else if (streq(option, "strict")) {
 833                                         strict_mode = true;
 834                                 } else if (streq(option, "lextest")) {
 835                                         mode = LexTest;
 836                                 } else if (streq(option, "benchmark")) {
 837                                         mode = BenchmarkParser;
 838                                 } else if (streq(option, "print-ast")) {
 839                                         mode = PrintAst;
 840                                 } else if (streq(option, "print-implicit-cast")) {
 841                                         print_implicit_casts = true;
 842                                 } else if (streq(option, "print-parenthesis")) {
 843                                         print_parenthesis = true;
 844                                 } else if (streq(option, "print-fluffy")) {
 845                                         mode = PrintFluffy;
 846                                 } else if (streq(option, "print-caml")) {
 847                                         mode = PrintCaml;
 848                                 } else if (streq(option, "version")) {
 849                                         print_cparser_version();
 850                                         exit(EXIT_SUCCESS);
 851                                 } else if (streq(option, "dump-function")) {
 852                                         ++i;
 853                                         if(i >= argc) {
 854                                                 fprintf(stderr, "error: "
 855                                                         "expected argument after '--dump-function'\n");
 856                                                 argument_errors = true;
 857                                                 break;
 858                                         }
 859                                         dumpfunction = argv[i];
 860                                         mode         = CompileDump;
 861                                 } else {
 862                                         fprintf(stderr, "error: unknown argument '%s'\n", arg);
 863                                         argument_errors = true;
 864                                 }
 865                         } else {
 866                                 fprintf(stderr, "error: unknown argument '%s'\n", arg);
 867                                 argument_errors = true;
 868                         }
 869                 } else {
 870                         filetype_t  type     = forced_filetype;
 871                         const char *filename = arg;
 872                         if (type == FILETYPE_AUTODETECT) {
 873                                 size_t const len = strlen(arg);
 874                                 if (len < 2 && arg[0] == '-') {
 875                                         /* - implicitly means C source file */
 876                                         type     = FILETYPE_C;
 877                                         filename = NULL;
 878                                 } else if (len > 2 && arg[len - 2] == '.') {
 879                                         switch (arg[len - 1]) {
 880                                         case 'c': type = FILETYPE_C;                      break;
 881                                         case 'h': type = FILETYPE_C;                      break;
 882                                         case 's': type = FILETYPE_PREPROCESSED_ASSEMBLER; break;
 883                                         case 'S': type = FILETYPE_ASSEMBLER;              break;
 884
 885                                         case 'a':
 886                                         case 'o': type = FILETYPE_OBJECT;                 break;
 887                                         }
 888                                 } else if (len > 3 && arg[len - 3] == '.') {
 889                                         if (streq(arg + len - 2, "so")) {
 890                                                 type = FILETYPE_OBJECT;
 891                                         }
 892                                 }
 893
 894                                 if (type == FILETYPE_AUTODETECT) {
 895                                         fprintf(stderr, "'%s': file format not recognized\n", arg);
 896                                         continue;
 897                                 }
 898                         }
 899
 900                         file_list_entry_t *entry
 901                                 = obstack_alloc(&file_obst, sizeof(entry[0]));
 902                         memset(entry, 0, sizeof(entry[0]));
 903                         entry->name = arg;
 904                         entry->type = type;
 905
 906                         if (last_file != NULL) {
 907                                 last_file->next = entry;
 908                         } else {
 909                                 files = entry;
 910                         }
 911                         last_file = entry;
 912                 }
 913         }
 914
 915         if (files == NULL) {
 916                 fprintf(stderr, "error: no input files specified\n");
 917                 argument_errors = true;
 918         }
 919
 920         if (help_displayed) {
 921                 return !argument_errors;
 922         }
 923         if (argument_errors) {
 924                 usage(argv[0]);
 925                 return 1;
 926         }
 927
 928         /* we do the lowering in ast2firm */
 929         firm_opt.lower_bitfields = FALSE;
 930
 931         gen_firm_init();
 932         init_symbol_table();
 933         init_tokens();
 934         init_types();
 935         init_typehash();
 936         init_basic_types();
 937         init_lexer();
 938         init_ast();
 939         init_parser();
 940         init_ast2firm();
 941
 942         if (construct_dep_target) {
 943                 if (outname != 0 && strlen(outname) >= 2) {
 944                         get_output_name(dep_target, sizeof(dep_target), outname, ".d");
 945                 } else {
 946                         get_output_name(dep_target, sizeof(dep_target), files->name, ".d");
 947                 }
 948         } else {
 949                 dep_target[0] = '\0';
 950         }
 951
 952         char outnamebuf[4096];
 953         if (outname == NULL) {
 954                 const char *filename = files->name;
 955
 956                 switch(mode) {
 957                 case BenchmarkParser:
 958                 case PrintAst:
 959                 case PrintFluffy:
 960                 case PrintCaml:
 961                 case LexTest:
 962                 case PreprocessOnly:
 963                         outname = "-";
 964                         break;
 965                 case ParseOnly:
 966                         break;
 967                 case Compile:
 968                         get_output_name(outnamebuf, sizeof(outnamebuf), filename, ".s");
 969                         outname = outnamebuf;
 970                         break;
 971                 case CompileAssemble:
 972                         get_output_name(outnamebuf, sizeof(outnamebuf), filename, ".o");
 973                         outname = outnamebuf;
 974                         break;
 975                 case CompileDump:
 976                         get_output_name(outnamebuf, sizeof(outnamebuf), dumpfunction,
 977                                         ".vcg");
 978                         outname = outnamebuf;
 979                         break;
 980                 case CompileAssembleLink:
 981 #ifdef _WIN32
 982                         outname = "a.exe";
 983 #else
 984                         outname = "a.out";
 985 #endif
 986                         break;
 987                 }
 988         }
 989
 990         assert(outname != NULL);
 991
 992         FILE *out;
 993         if (streq(outname, "-")) {
 994                 out = stdout;
 995         } else {
 996                 out = fopen(outname, "w");
 997                 if(out == NULL) {
 998                         fprintf(stderr, "Couldn't open '%s' for writing: %s\n", outname,
 999                                         strerror(errno));
1000                         return 1;
1001                 }
1002         }
1003
1004         file_list_entry_t *file;
1005         for (file = files; file != NULL; file = file->next) {
1006                 char        asm_tempfile[1024];
1007                 const char *filename = file->name;
1008                 filetype_t  filetype = file->type;
1009
1010                 if (file->type == FILETYPE_OBJECT)
1011                         continue;
1012
1013                 FILE *in = NULL;
1014                 if (mode == LexTest) {
1015                         if (in == NULL)
1016                                 in = open_file(filename);
1017                         lextest(in, filename);
1018                         fclose(in);
1019                         exit(EXIT_SUCCESS);
1020                 }
1021
1022                 FILE *preprocessed_in = NULL;
1023                 if (filetype == FILETYPE_C || filetype == FILETYPE_ASSEMBLER) {
1024                         /* no support for input on FILE* yet */
1025                         if (in != NULL)
1026                                 panic("internal compiler error: in for preprocessor != NULL");
1027
1028                         preprocessed_in = preprocess(filename);
1029                         if (mode == PreprocessOnly) {
1030                                 copy_file(out, preprocessed_in);
1031                                 int result = pclose(preprocessed_in);
1032                                 fclose(out);
1033                                 return result;
1034                         }
1035
1036                         if (filetype == FILETYPE_C) {
1037                                 filetype = FILETYPE_PREPROCESSED_C;
1038                         } else if (filetype == FILETYPE_ASSEMBLER) {
1039                                 filetype = FILETYPE_PREPROCESSED_ASSEMBLER;
1040                         } else {
1041                                 panic("internal compiler error: unknown filetype at preproc");
1042                         }
1043
1044                         in = preprocessed_in;
1045                 }
1046
1047                 FILE *asm_out;
1048                 if(mode == Compile) {
1049                         asm_out = out;
1050                 } else {
1051                         asm_out = make_temp_file(asm_tempfile, sizeof(asm_tempfile),
1052                                                  "ccs");
1053                 }
1054
1055                 if (in == NULL)
1056                         in = open_file(filename);
1057
1058                 /* preprocess and compile */
1059                 if (filetype == FILETYPE_PREPROCESSED_C) {
1060                         translation_unit_t *const unit = do_parsing(in, filename);
1061                         if (in == preprocessed_in) {
1062                                 int pp_result = pclose(preprocessed_in);
1063                                 if (pp_result != EXIT_SUCCESS) {
1064                                         exit(EXIT_FAILURE);
1065                                 }
1066                         }
1067
1068                         /* prints the AST even if errors occurred */
1069                         if (mode == PrintAst) {
1070                                 type_set_output(out);
1071                                 ast_set_output(out);
1072                                 print_ast(unit);
1073                         }
1074
1075                         if(error_count > 0) {
1076                                 /* parsing failed because of errors */
1077                                 fprintf(stderr, "%u error(s), %u warning(s)\n", error_count,
1078                                         warning_count);
1079                                 result = EXIT_FAILURE;
1080                                 continue;
1081                         } else if(warning_count > 0) {
1082                                 fprintf(stderr, "%u warning(s)\n", warning_count);
1083                         }
1084
1085                         if(mode == BenchmarkParser) {
1086                                 return result;
1087                         } else if(mode == PrintFluffy) {
1088                                 write_fluffy_decls(out, unit);
1089                                 continue;
1090                         } else if (mode == PrintCaml) {
1091                                 write_caml_decls(out, unit);
1092                                 continue;
1093                         }
1094
1095                         translation_unit_to_firm(unit);
1096
1097                         if (mode == ParseOnly) {
1098                                 continue;
1099                         }
1100
1101                         if (mode == CompileDump) {
1102                                 /* find irg */
1103                                 ident    *id     = new_id_from_str(dumpfunction);
1104                                 ir_graph *irg    = NULL;
1105                                 int       n_irgs = get_irp_n_irgs();
1106                                 for(int i = 0; i < n_irgs; ++i) {
1107                                         ir_graph *tirg   = get_irp_irg(i);
1108                                         ident    *irg_id = get_entity_ident(get_irg_entity(tirg));
1109                                         if(irg_id == id) {
1110                                                 irg = tirg;
1111                                                 break;
1112                                         }
1113                                 }
1114
1115                                 if(irg == NULL) {
1116                                         fprintf(stderr, "No graph for function '%s' found\n",
1117                                                 dumpfunction);
1118                                         exit(1);
1119                                 }
1120
1121                                 dump_ir_block_graph_file(irg, out);
1122                                 fclose(out);
1123                                 exit(0);
1124                         }
1125
1126                         gen_firm_finish(asm_out, filename, /*c_mode=*/1,
1127                                         /*firm_const_exists=*/0);
1128                         if (asm_out != out) {
1129                                 fclose(asm_out);
1130                         }
1131
1132                 } else if (filetype == FILETYPE_PREPROCESSED_ASSEMBLER) {
1133                         copy_file(asm_out, in);
1134                         if (in == preprocessed_in) {
1135                                 int pp_result = pclose(preprocessed_in);
1136                                 if (pp_result != EXIT_SUCCESS) {
1137                                         return pp_result;
1138                                 }
1139                         }
1140                         if(asm_out != out) {
1141                                 fclose(asm_out);
1142                         }
1143                 }
1144
1145                 if (mode == Compile)
1146                         continue;
1147
1148                 /* if we're here then we have preprocessed assembly */
1149                 filename = asm_tempfile;
1150                 filetype = FILETYPE_PREPROCESSED_ASSEMBLER;
1151
1152                 /* assemble */
1153                 if (filetype == FILETYPE_PREPROCESSED_ASSEMBLER) {
1154                         char        temp[1024];
1155                         const char *filename_o;
1156                         if(mode == CompileAssemble) {
1157                                 fclose(out);
1158                                 filename_o = outname;
1159                         } else {
1160                                 FILE *tempf = make_temp_file(temp, sizeof(temp), "cco");
1161                                 fclose(tempf);
1162                                 filename_o = temp;
1163                         }
1164
1165                         assemble(filename_o, filename);
1166
1167                         size_t len = strlen(filename_o) + 1;
1168                         filename = obstack_copy(&file_obst, filename_o, len);
1169                         filetype = FILETYPE_OBJECT;
1170                 }
1171
1172                 /* ok we're done here, process next file */
1173                 file->name = filename;
1174                 file->type = filetype;
1175         }
1176
1177         if (result != EXIT_SUCCESS)
1178                 return result;
1179
1180         /* link program file */
1181         if(mode == CompileAssembleLink) {
1182                 obstack_1grow(&ldflags_obst, '\0');
1183                 const char *flags = obstack_finish(&ldflags_obst);
1184
1185                 /* construct commandline */
1186                 obstack_printf(&file_obst, "%s", LINKER);
1187                 for (file_list_entry_t *entry = files; entry != NULL;
1188                                 entry = entry->next) {
1189                         if (entry->type != FILETYPE_OBJECT)
1190                                 continue;
1191
1192                         add_flag(&file_obst, "%s", entry->name);
1193                 }
1194
1195                 add_flag(&file_obst, "-o");
1196                 add_flag(&file_obst, outname);
1197                 obstack_printf(&file_obst, "%s", flags);
1198                 obstack_1grow(&file_obst, '\0');
1199
1200                 char *commandline = obstack_finish(&file_obst);
1201
1202                 if(verbose) {
1203                         puts(commandline);
1204                 }
1205                 int err = system(commandline);
1206                 if(err != EXIT_SUCCESS) {
1207                         fprintf(stderr, "linker reported an error\n");
1208                         exit(1);
1209                 }
1210         }
1211
1212         obstack_free(&cppflags_obst, NULL);
1213         obstack_free(&ldflags_obst, NULL);
1214         obstack_free(&file_obst, NULL);
1215
1216         exit_ast2firm();
1217         exit_parser();
1218         exit_ast();
1219         exit_lexer();
1220         exit_typehash();
1221         exit_types();
1222         exit_tokens();
1223         exit_symbol_table();
1224         return 0;
1225 }