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