lib.c

   1 /*
   2  * 'sparse' library helper routines.
   3  *
   4  * Copyright (C) 2003 Transmeta Corp.
   5  *               2003-2004 Linus Torvalds
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a copy
   8  * of this software and associated documentation files (the "Software"), to deal
   9  * in the Software without restriction, including without limitation the rights
  10  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  11  * copies of the Software, and to permit persons to whom the Software is
  12  * furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included in
  15  * all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  20  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  22  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  23  * THE SOFTWARE.
  24  */
  25 #include <ctype.h>
  26 #include <fcntl.h>
  27 #include <stdarg.h>
  28 #include <stddef.h>
  29 #include <stdio.h>
  30 #include <stdlib.h>
  31 #include <string.h>
  32 #include <unistd.h>
  33 #include <assert.h>
  34
  35 #include <sys/types.h>
  36
  37 #include "lib.h"
  38 #include "allocate.h"
  39 #include "token.h"
  40 #include "parse.h"
  41 #include "symbol.h"
  42 #include "expression.h"
  43 #include "scope.h"
  44 #include "linearize.h"
  45 #include "target.h"
  46 #include "version.h"
  47
  48 int verbose, optimize, optimize_size, preprocessing;
  49 int die_if_error = 0;
  50 int has_error = 0;
  51
  52 #ifndef __GNUC__
  53 # define __GNUC__ 2
  54 # define __GNUC_MINOR__ 95
  55 # define __GNUC_PATCHLEVEL__ 0
  56 #endif
  57
  58 int gcc_major = __GNUC__;
  59 int gcc_minor = __GNUC_MINOR__;
  60 int gcc_patchlevel = __GNUC_PATCHLEVEL__;
  61
  62 static const char *gcc_base_dir = GCC_BASE;
  63 static const char *multiarch_dir = MULTIARCH_TRIPLET;
  64
  65 struct token *skip_to(struct token *token, int op)
  66 {
  67         while (!match_op(token, op) && !eof_token(token))
  68                 token = token->next;
  69         return token;
  70 }
  71
  72 struct token *expect(struct token *token, int op, const char *where)
  73 {
  74         if (!match_op(token, op)) {
  75                 static struct token bad_token;
  76                 if (token != &bad_token) {
  77                         bad_token.next = token;
  78                         sparse_error(token->pos, "Expected %s %s", show_special(op), where);
  79                         sparse_error(token->pos, "got %s", show_token(token));
  80                 }
  81                 if (op == ';')
  82                         return skip_to(token, op);
  83                 return &bad_token;
  84         }
  85         return token->next;
  86 }
  87
  88 unsigned int hexval(unsigned int c)
  89 {
  90         int retval = 256;
  91         switch (c) {
  92         case '0'...'9':
  93                 retval = c - '0';
  94                 break;
  95         case 'a'...'f':
  96                 retval = c - 'a' + 10;
  97                 break;
  98         case 'A'...'F':
  99                 retval = c - 'A' + 10;
 100                 break;
 101         }
 102         return retval;
 103 }
 104
 105 static void do_warn(const char *type, struct position pos, const char * fmt, va_list args)
 106 {
 107         static char buffer[512];
 108         const char *name;
 109
 110         vsprintf(buffer, fmt, args);
 111         name = stream_name(pos.stream);
 112
 113         fprintf(stderr, "%s:%d:%d: %s%s\n",
 114                 name, pos.line, pos.pos, type, buffer);
 115 }
 116
 117 static int max_warnings = 100;
 118 static int show_info = 1;
 119
 120 void info(struct position pos, const char * fmt, ...)
 121 {
 122         va_list args;
 123
 124         if (!show_info)
 125                 return;
 126         va_start(args, fmt);
 127         do_warn("", pos, fmt, args);
 128         va_end(args);
 129 }
 130
 131 static void do_error(struct position pos, const char * fmt, va_list args)
 132 {
 133         static int errors = 0;
 134         die_if_error = 1;
 135         show_info = 1;
 136         /* Shut up warnings after an error */
 137         has_error |= ERROR_CURR_PHASE;
 138         if (errors > 100) {
 139                 static int once = 0;
 140                 show_info = 0;
 141                 if (once)
 142                         return;
 143                 fmt = "too many errors";
 144                 once = 1;
 145         }
 146
 147         do_warn("error: ", pos, fmt, args);
 148         errors++;
 149 }
 150
 151 void warning(struct position pos, const char * fmt, ...)
 152 {
 153         va_list args;
 154
 155         if (Wsparse_error) {
 156                 va_start(args, fmt);
 157                 do_error(pos, fmt, args);
 158                 va_end(args);
 159                 return;
 160         }
 161
 162         if (!max_warnings || has_error) {
 163                 show_info = 0;
 164                 return;
 165         }
 166
 167         if (!--max_warnings) {
 168                 show_info = 0;
 169                 fmt = "too many warnings";
 170         }
 171
 172         va_start(args, fmt);
 173         do_warn("warning: ", pos, fmt, args);
 174         va_end(args);
 175 }
 176
 177 void sparse_error(struct position pos, const char * fmt, ...)
 178 {
 179         va_list args;
 180         va_start(args, fmt);
 181         do_error(pos, fmt, args);
 182         va_end(args);
 183 }
 184
 185 void expression_error(struct expression *expr, const char *fmt, ...)
 186 {
 187         va_list args;
 188         va_start(args, fmt);
 189         do_error(expr->pos, fmt, args);
 190         va_end(args);
 191         expr->ctype = &bad_ctype;
 192 }
 193
 194 void error_die(struct position pos, const char * fmt, ...)
 195 {
 196         va_list args;
 197         va_start(args, fmt);
 198         do_warn("error: ", pos, fmt, args);
 199         va_end(args);
 200         exit(1);
 201 }
 202
 203 void die(const char *fmt, ...)
 204 {
 205         va_list args;
 206         static char buffer[512];
 207
 208         va_start(args, fmt);
 209         vsnprintf(buffer, sizeof(buffer), fmt, args);
 210         va_end(args);
 211
 212         fprintf(stderr, "%s\n", buffer);
 213         exit(1);
 214 }
 215
 216 static struct token *pre_buffer_begin = NULL;
 217 static struct token *pre_buffer_end = NULL;
 218
 219 int Waddress = 0;
 220 int Waddress_space = 1;
 221 int Wbitwise = 1;
 222 int Wcast_to_as = 0;
 223 int Wcast_truncate = 1;
 224 int Wcontext = 1;
 225 int Wdecl = 1;
 226 int Wdeclarationafterstatement = -1;
 227 int Wdefault_bitfield_sign = 0;
 228 int Wdesignated_init = 1;
 229 int Wdo_while = 0;
 230 int Winit_cstring = 0;
 231 int Wenum_mismatch = 1;
 232 int Wsparse_error = 0;
 233 int Wnon_pointer_null = 1;
 234 int Wold_initializer = 1;
 235 int Wone_bit_signed_bitfield = 1;
 236 int Woverride_init = 1;
 237 int Woverride_init_all = 0;
 238 int Woverride_init_whole_range = 0;
 239 int Wparen_string = 0;
 240 int Wptr_subtraction_blows = 0;
 241 int Wreturn_void = 0;
 242 int Wshadow = 0;
 243 int Wsizeof_bool = 0;
 244 int Wtautological_compare = 0;
 245 int Wtransparent_union = 0;
 246 int Wtypesign = 0;
 247 int Wundef = 0;
 248 int Wuninitialized = 1;
 249 int Wunknown_attribute = 1;
 250 int Wvla = 1;
 251
 252 int dump_macro_defs = 0;
 253
 254 int dbg_entry = 0;
 255 int dbg_dead = 0;
 256
 257 int fmem_report = 0;
 258 int fdump_linearize;
 259
 260 int preprocess_only;
 261
 262 static enum { STANDARD_C89,
 263               STANDARD_C94,
 264               STANDARD_C99,
 265               STANDARD_C11,
 266               STANDARD_GNU11,
 267               STANDARD_GNU89,
 268               STANDARD_GNU99, } standard = STANDARD_GNU89;
 269
 270 #define ARCH_LP32  0
 271 #define ARCH_LP64  1
 272 #define ARCH_LLP64 2
 273
 274 #ifdef __x86_64__
 275 #define ARCH_M64_DEFAULT ARCH_LP64
 276 #else
 277 #define ARCH_M64_DEFAULT ARCH_LP32
 278 #endif
 279
 280 int arch_m64 = ARCH_M64_DEFAULT;
 281 int arch_msize_long = 0;
 282
 283 #define CMDLINE_INCLUDE 20
 284 static int cmdline_include_nr = 0;
 285 static char *cmdline_include[CMDLINE_INCLUDE];
 286
 287
 288 void add_pre_buffer(const char *fmt, ...)
 289 {
 290         va_list args;
 291         unsigned int size;
 292         struct token *begin, *end;
 293         char buffer[4096];
 294
 295         va_start(args, fmt);
 296         size = vsnprintf(buffer, sizeof(buffer), fmt, args);
 297         va_end(args);
 298         begin = tokenize_buffer(buffer, size, &end);
 299         if (!pre_buffer_begin)
 300                 pre_buffer_begin = begin;
 301         if (pre_buffer_end)
 302                 pre_buffer_end->next = begin;
 303         pre_buffer_end = end;
 304 }
 305
 306 static char **handle_switch_D(char *arg, char **next)
 307 {
 308         const char *name = arg + 1;
 309         const char *value = "1";
 310
 311         if (!*name || isspace((unsigned char)*name))
 312                 die("argument to `-D' is missing");
 313
 314         for (;;) {
 315                 char c;
 316                 c = *++arg;
 317                 if (!c)
 318                         break;
 319                 if (isspace((unsigned char)c) || c == '=') {
 320                         *arg = '\0';
 321                         value = arg + 1;
 322                         break;
 323                 }
 324         }
 325         add_pre_buffer("#define %s %s\n", name, value);
 326         return next;
 327 }
 328
 329 static char **handle_switch_E(char *arg, char **next)
 330 {
 331         if (arg[1] == '\0')
 332                 preprocess_only = 1;
 333         return next;
 334 }
 335
 336 static char **handle_switch_I(char *arg, char **next)
 337 {
 338         char *path = arg+1;
 339
 340         switch (arg[1]) {
 341         case '-':
 342                 add_pre_buffer("#split_include\n");
 343                 break;
 344
 345         case '\0':      /* Plain "-I" */
 346                 path = *++next;
 347                 if (!path)
 348                         die("missing argument for -I option");
 349                 /* Fall through */
 350         default:
 351                 add_pre_buffer("#add_include \"%s/\"\n", path);
 352         }
 353         return next;
 354 }
 355
 356 static void add_cmdline_include(char *filename)
 357 {
 358         if (cmdline_include_nr >= CMDLINE_INCLUDE)
 359                 die("too many include files for %s\n", filename);
 360         cmdline_include[cmdline_include_nr++] = filename;
 361 }
 362
 363 static char **handle_switch_i(char *arg, char **next)
 364 {
 365         if (*next && !strcmp(arg, "include"))
 366                 add_cmdline_include(*++next);
 367         else if (*next && !strcmp(arg, "imacros"))
 368                 add_cmdline_include(*++next);
 369         else if (*next && !strcmp(arg, "isystem")) {
 370                 char *path = *++next;
 371                 if (!path)
 372                         die("missing argument for -isystem option");
 373                 add_pre_buffer("#add_isystem \"%s/\"\n", path);
 374         } else if (*next && !strcmp(arg, "idirafter")) {
 375                 char *path = *++next;
 376                 if (!path)
 377                         die("missing argument for -idirafter option");
 378                 add_pre_buffer("#add_dirafter \"%s/\"\n", path);
 379         }
 380         return next;
 381 }
 382
 383 static char **handle_switch_M(char *arg, char **next)
 384 {
 385         if (!strcmp(arg, "MF") || !strcmp(arg,"MQ") || !strcmp(arg,"MT")) {
 386                 if (!*next)
 387                         die("missing argument for -%s option", arg);
 388                 return next + 1;
 389         }
 390         return next;
 391 }
 392
 393 static char **handle_multiarch_dir(char *arg, char **next)
 394 {
 395         multiarch_dir = *++next;
 396         if (!multiarch_dir)
 397                 die("missing argument for -multiarch-dir option");
 398         return next;
 399 }
 400
 401 static char **handle_switch_m(char *arg, char **next)
 402 {
 403         if (!strcmp(arg, "m64")) {
 404                 arch_m64 = ARCH_LP64;
 405         } else if (!strcmp(arg, "m32")) {
 406                 arch_m64 = ARCH_LP32;
 407         } else if (!strcmp(arg, "msize-llp64")) {
 408                 arch_m64 = ARCH_LLP64;
 409         } else if (!strcmp(arg, "msize-long")) {
 410                 arch_msize_long = 1;
 411         } else if (!strcmp(arg, "multiarch-dir"))
 412                 return handle_multiarch_dir(arg, next);
 413         return next;
 414 }
 415
 416 static void handle_arch_m64_finalize(void)
 417 {
 418         switch (arch_m64) {
 419         case ARCH_LP32:
 420                 /* default values */
 421                 return;
 422         case ARCH_LP64:
 423                 bits_in_long = 64;
 424                 max_int_alignment = 8;
 425                 size_t_ctype = &ulong_ctype;
 426                 ssize_t_ctype = &long_ctype;
 427                 add_pre_buffer("#weak_define __LP64__ 1\n");
 428                 add_pre_buffer("#weak_define _LP64 1\n");
 429                 goto case_64bit_common;
 430         case ARCH_LLP64:
 431                 bits_in_long = 32;
 432                 max_int_alignment = 4;
 433                 size_t_ctype = &ullong_ctype;
 434                 ssize_t_ctype = &llong_ctype;
 435                 add_pre_buffer("#weak_define __LLP64__ 1\n");
 436                 goto case_64bit_common;
 437         case_64bit_common:
 438                 bits_in_pointer = 64;
 439                 pointer_alignment = 8;
 440 #ifdef __x86_64__
 441                 add_pre_buffer("#weak_define __x86_64__ 1\n");
 442 #endif
 443                 break;
 444         }
 445 }
 446
 447 static void handle_arch_msize_long_finalize(void)
 448 {
 449         if (arch_msize_long) {
 450                 size_t_ctype = &ulong_ctype;
 451                 ssize_t_ctype = &long_ctype;
 452         }
 453 }
 454
 455 static void handle_arch_finalize(void)
 456 {
 457         handle_arch_m64_finalize();
 458         handle_arch_msize_long_finalize();
 459 }
 460
 461
 462 static int handle_simple_switch(const char *arg, const char *name, int *flag)
 463 {
 464         int val = 1;
 465
 466         // Prefixe "no-" mean to turn flag off.
 467         if (strncmp(arg, "no-", 3) == 0) {
 468                 arg += 3;
 469                 val = 0;
 470         }
 471
 472         if (strcmp(arg, name) == 0) {
 473                 *flag = val;
 474                 return 1;
 475         }
 476
 477         // not handled
 478         return 0;
 479 }
 480
 481 static char **handle_switch_o(char *arg, char **next)
 482 {
 483         if (!strcmp (arg, "o")) {       // "-o foo"
 484                 if (!*++next)
 485                         die("argument to '-o' is missing");
 486         }
 487         // else "-ofoo"
 488
 489         return next;
 490 }
 491
 492 static const struct warning {
 493         const char *name;
 494         int *flag;
 495 } warnings[] = {
 496         { "address", &Waddress },
 497         { "address-space", &Waddress_space },
 498         { "bitwise", &Wbitwise },
 499         { "cast-to-as", &Wcast_to_as },
 500         { "cast-truncate", &Wcast_truncate },
 501         { "context", &Wcontext },
 502         { "decl", &Wdecl },
 503         { "declaration-after-statement", &Wdeclarationafterstatement },
 504         { "default-bitfield-sign", &Wdefault_bitfield_sign },
 505         { "designated-init", &Wdesignated_init },
 506         { "do-while", &Wdo_while },
 507         { "enum-mismatch", &Wenum_mismatch },
 508         { "init-cstring", &Winit_cstring },
 509         { "non-pointer-null", &Wnon_pointer_null },
 510         { "old-initializer", &Wold_initializer },
 511         { "one-bit-signed-bitfield", &Wone_bit_signed_bitfield },
 512         { "override-init", &Woverride_init },
 513         { "override-init-all", &Woverride_init_all },
 514         { "paren-string", &Wparen_string },
 515         { "ptr-subtraction-blows", &Wptr_subtraction_blows },
 516         { "return-void", &Wreturn_void },
 517         { "shadow", &Wshadow },
 518         { "sizeof-bool", &Wsizeof_bool },
 519         { "sparse-error", &Wsparse_error },
 520         { "tautological-compare", &Wtautological_compare },
 521         { "transparent-union", &Wtransparent_union },
 522         { "typesign", &Wtypesign },
 523         { "undef", &Wundef },
 524         { "uninitialized", &Wuninitialized },
 525         { "unknown-attribute", &Wunknown_attribute },
 526         { "vla", &Wvla },
 527 };
 528
 529 enum {
 530         WARNING_OFF,
 531         WARNING_ON,
 532         WARNING_FORCE_OFF
 533 };
 534
 535
 536 static char **handle_onoff_switch(char *arg, char **next, const struct warning warnings[], int n)
 537 {
 538         int flag = WARNING_ON;
 539         char *p = arg + 1;
 540         unsigned i;
 541
 542         if (!strcmp(p, "sparse-all")) {
 543                 for (i = 0; i < n; i++) {
 544                         if (*warnings[i].flag != WARNING_FORCE_OFF && warnings[i].flag != &Wsparse_error)
 545                                 *warnings[i].flag = WARNING_ON;
 546                 }
 547         }
 548
 549         // Prefixes "no" and "no-" mean to turn warning off.
 550         if (p[0] == 'n' && p[1] == 'o') {
 551                 p += 2;
 552                 if (p[0] == '-')
 553                         p++;
 554                 flag = WARNING_FORCE_OFF;
 555         }
 556
 557         for (i = 0; i < n; i++) {
 558                 if (!strcmp(p,warnings[i].name)) {
 559                         *warnings[i].flag = flag;
 560                         return next;
 561                 }
 562         }
 563
 564         // Unknown.
 565         return NULL;
 566 }
 567
 568 static char **handle_switch_W(char *arg, char **next)
 569 {
 570         char ** ret = handle_onoff_switch(arg, next, warnings, ARRAY_SIZE(warnings));
 571         if (ret)
 572                 return ret;
 573
 574         // Unknown.
 575         return next;
 576 }
 577
 578 static struct warning debugs[] = {
 579         { "entry", &dbg_entry},
 580         { "dead", &dbg_dead},
 581 };
 582
 583
 584 static char **handle_switch_v(char *arg, char **next)
 585 {
 586         char ** ret = handle_onoff_switch(arg, next, debugs, ARRAY_SIZE(debugs));
 587         if (ret)
 588                 return ret;
 589
 590         // Unknown.
 591         do {
 592                 verbose++;
 593         } while (*++arg == 'v');
 594         return next;
 595 }
 596
 597 static struct warning dumps[] = {
 598         { "D", &dump_macro_defs},
 599 };
 600
 601 static char **handle_switch_d(char *arg, char **next)
 602 {
 603         char ** ret = handle_onoff_switch(arg, next, dumps, ARRAY_SIZE(dumps));
 604         if (ret)
 605                 return ret;
 606
 607         return next;
 608 }
 609
 610
 611 static void handle_onoff_switch_finalize(const struct warning warnings[], int n)
 612 {
 613         unsigned i;
 614
 615         for (i = 0; i < n; i++) {
 616                 if (*warnings[i].flag == WARNING_FORCE_OFF)
 617                         *warnings[i].flag = WARNING_OFF;
 618         }
 619 }
 620
 621 static void handle_switch_W_finalize(void)
 622 {
 623         handle_onoff_switch_finalize(warnings, ARRAY_SIZE(warnings));
 624
 625         /* default Wdeclarationafterstatement based on the C dialect */
 626         if (-1 == Wdeclarationafterstatement)
 627         {
 628                 switch (standard)
 629                 {
 630                         case STANDARD_C89:
 631                         case STANDARD_C94:
 632                                 Wdeclarationafterstatement = 1;
 633                                 break;
 634
 635                         case STANDARD_C99:
 636                         case STANDARD_GNU89:
 637                         case STANDARD_GNU99:
 638                         case STANDARD_C11:
 639                         case STANDARD_GNU11:
 640                                 Wdeclarationafterstatement = 0;
 641                                 break;
 642
 643                         default:
 644                                 assert (0);
 645                 }
 646
 647         }
 648 }
 649
 650 static void handle_switch_v_finalize(void)
 651 {
 652         handle_onoff_switch_finalize(debugs, ARRAY_SIZE(debugs));
 653 }
 654
 655 static char **handle_switch_U(char *arg, char **next)
 656 {
 657         const char *name = arg + 1;
 658         add_pre_buffer ("#undef %s\n", name);
 659         return next;
 660 }
 661
 662 static char **handle_switch_O(char *arg, char **next)
 663 {
 664         int level = 1;
 665         if (arg[1] >= '0' && arg[1] <= '9')
 666                 level = arg[1] - '0';
 667         optimize = level;
 668         optimize_size = arg[1] == 's';
 669         return next;
 670 }
 671
 672 static char **handle_switch_ftabstop(char *arg, char **next)
 673 {
 674         char *end;
 675         unsigned long val;
 676
 677         if (*arg == '\0')
 678                 die("error: missing argument to \"-ftabstop=\"");
 679
 680         /* we silently ignore silly values */
 681         val = strtoul(arg, &end, 10);
 682         if (*end == '\0' && 1 <= val && val <= 100)
 683                 tabstop = val;
 684
 685         return next;
 686 }
 687
 688 static char **handle_switch_fdump(char *arg, char **next)
 689 {
 690         if (!strncmp(arg, "linearize", 9)) {
 691                 arg += 9;
 692                 if (*arg == '\0')
 693                         fdump_linearize = 1;
 694                 else if (!strcmp(arg, "=only"))
 695                         fdump_linearize = 2;
 696                 else
 697                         goto err;
 698         }
 699
 700         /* ignore others flags */
 701         return next;
 702
 703 err:
 704         die("error: unknown flag \"-fdump-%s\"", arg);
 705 }
 706
 707 static char **handle_switch_f(char *arg, char **next)
 708 {
 709         arg++;
 710
 711         if (!strncmp(arg, "tabstop=", 8))
 712                 return handle_switch_ftabstop(arg+8, next);
 713         if (!strncmp(arg, "dump-", 5))
 714                 return handle_switch_fdump(arg+5, next);
 715
 716         /* handle switches w/ arguments above, boolean and only boolean below */
 717         if (handle_simple_switch(arg, "mem-report", &fmem_report))
 718                 return next;
 719
 720         return next;
 721 }
 722
 723 static char **handle_switch_G(char *arg, char **next)
 724 {
 725         if (!strcmp (arg, "G") && *next)
 726                 return next + 1; // "-G 0"
 727         else
 728                 return next;     // "-G0" or (bogus) terminal "-G"
 729 }
 730
 731 static char **handle_switch_a(char *arg, char **next)
 732 {
 733         if (!strcmp (arg, "ansi"))
 734                 standard = STANDARD_C89;
 735
 736         return next;
 737 }
 738
 739 static char **handle_switch_s(char *arg, char **next)
 740 {
 741         if (!strncmp (arg, "std=", 4))
 742         {
 743                 arg += 4;
 744
 745                 if (!strcmp (arg, "c89") ||
 746                     !strcmp (arg, "iso9899:1990"))
 747                         standard = STANDARD_C89;
 748
 749                 else if (!strcmp (arg, "iso9899:199409"))
 750                         standard = STANDARD_C94;
 751
 752                 else if (!strcmp (arg, "c99") ||
 753                          !strcmp (arg, "c9x") ||
 754                          !strcmp (arg, "iso9899:1999") ||
 755                          !strcmp (arg, "iso9899:199x"))
 756                         standard = STANDARD_C99;
 757
 758                 else if (!strcmp (arg, "gnu89"))
 759                         standard = STANDARD_GNU89;
 760
 761                 else if (!strcmp (arg, "gnu99") || !strcmp (arg, "gnu9x"))
 762                         standard = STANDARD_GNU99;
 763
 764                 else if (!strcmp(arg, "c11") ||
 765                          !strcmp(arg, "c1x") ||
 766                          !strcmp(arg, "iso9899:2011"))
 767                         standard = STANDARD_C11;
 768
 769                 else if (!strcmp(arg, "gnu11"))
 770                         standard = STANDARD_GNU11;
 771
 772                 else
 773                         die ("Unsupported C dialect");
 774         }
 775
 776         return next;
 777 }
 778
 779 static char **handle_nostdinc(char *arg, char **next)
 780 {
 781         add_pre_buffer("#nostdinc\n");
 782         return next;
 783 }
 784
 785 static char **handle_switch_n(char *arg, char **next)
 786 {
 787         if (!strcmp (arg, "nostdinc"))
 788                 return handle_nostdinc(arg, next);
 789
 790         return next;
 791 }
 792
 793 static char **handle_base_dir(char *arg, char **next)
 794 {
 795         gcc_base_dir = *++next;
 796         if (!gcc_base_dir)
 797                 die("missing argument for -gcc-base-dir option");
 798         return next;
 799 }
 800
 801 static char **handle_switch_g(char *arg, char **next)
 802 {
 803         if (!strcmp (arg, "gcc-base-dir"))
 804                 return handle_base_dir(arg, next);
 805
 806         return next;
 807 }
 808
 809
 810 static char **handle_version(char *arg, char **next)
 811 {
 812         printf("%s\n", SPARSE_VERSION);
 813         exit(0);
 814 }
 815
 816 static char **handle_param(char *arg, char **next)
 817 {
 818         char *value = NULL;
 819
 820         /* For now just skip any '--param=*' or '--param *' */
 821         if (*arg == '\0') {
 822                 value = *++next;
 823         } else if (isspace((unsigned char)*arg) || *arg == '=') {
 824                 value = ++arg;
 825         }
 826
 827         if (!value)
 828                 die("missing argument for --param option");
 829
 830         return next;
 831 }
 832
 833 struct switches {
 834         const char *name;
 835         char **(*fn)(char *, char **);
 836         unsigned int prefix:1;
 837 };
 838
 839 static char **handle_long_options(char *arg, char **next)
 840 {
 841         static struct switches cmd[] = {
 842                 { "param", handle_param, 1 },
 843                 { "version", handle_version },
 844                 { NULL, NULL }
 845         };
 846         struct switches *s = cmd;
 847
 848         while (s->name) {
 849                 int optlen = strlen(s->name);
 850                 if (!strncmp(s->name, arg, optlen + !s->prefix))
 851                         return s->fn(arg + optlen, next);
 852                 s++;
 853         }
 854         return next;
 855 }
 856
 857 static char **handle_switch(char *arg, char **next)
 858 {
 859         switch (*arg) {
 860         case 'a': return handle_switch_a(arg, next);
 861         case 'D': return handle_switch_D(arg, next);
 862         case 'd': return handle_switch_d(arg, next);
 863         case 'E': return handle_switch_E(arg, next);
 864         case 'f': return handle_switch_f(arg, next);
 865         case 'g': return handle_switch_g(arg, next);
 866         case 'G': return handle_switch_G(arg, next);
 867         case 'I': return handle_switch_I(arg, next);
 868         case 'i': return handle_switch_i(arg, next);
 869         case 'M': return handle_switch_M(arg, next);
 870         case 'm': return handle_switch_m(arg, next);
 871         case 'n': return handle_switch_n(arg, next);
 872         case 'o': return handle_switch_o(arg, next);
 873         case 'O': return handle_switch_O(arg, next);
 874         case 's': return handle_switch_s(arg, next);
 875         case 'U': return handle_switch_U(arg, next);
 876         case 'v': return handle_switch_v(arg, next);
 877         case 'W': return handle_switch_W(arg, next);
 878         case '-': return handle_long_options(arg + 1, next);
 879         default:
 880                 break;
 881         }
 882
 883         /*
 884          * Ignore unknown command line options:
 885          * they're probably gcc switches
 886          */
 887         return next;
 888 }
 889
 890 static void predefined_sizeof(const char *name, unsigned bits)
 891 {
 892         add_pre_buffer("#weak_define __SIZEOF_%s__ %d\n", name, bits/8);
 893 }
 894
 895 static void predefined_max(const char *name, const char *suffix, unsigned bits)
 896 {
 897         unsigned long long max = (1ULL << (bits - 1 )) - 1;
 898
 899         add_pre_buffer("#weak_define __%s_MAX__ %#llx%s\n", name, max, suffix);
 900 }
 901
 902 static void predefined_type_size(const char *name, const char *suffix, unsigned bits)
 903 {
 904         predefined_max(name, suffix, bits);
 905         predefined_sizeof(name, bits);
 906 }
 907
 908 static void predefined_macros(void)
 909 {
 910         add_pre_buffer("#define __CHECKER__ 1\n");
 911
 912         predefined_sizeof("SHORT", bits_in_short);
 913         predefined_max("SHRT", "", bits_in_short);
 914         predefined_max("SCHAR", "", bits_in_char);
 915         predefined_max("WCHAR", "", bits_in_wchar);
 916         add_pre_buffer("#weak_define __CHAR_BIT__ %d\n", bits_in_char);
 917
 918         predefined_type_size("INT", "", bits_in_int);
 919         predefined_type_size("LONG", "L", bits_in_long);
 920         predefined_type_size("LONG_LONG", "LL", bits_in_longlong);
 921
 922         predefined_sizeof("INT128", 128);
 923
 924         predefined_sizeof("SIZE_T", bits_in_pointer);
 925         predefined_sizeof("PTRDIFF_T", bits_in_pointer);
 926         predefined_sizeof("POINTER", bits_in_pointer);
 927
 928         predefined_sizeof("FLOAT", bits_in_float);
 929         predefined_sizeof("DOUBLE", bits_in_double);
 930         predefined_sizeof("LONG_DOUBLE", bits_in_longdouble);
 931 }
 932
 933 void declare_builtin_functions(void)
 934 {
 935         /* Gaah. gcc knows tons of builtin <string.h> functions */
 936         add_pre_buffer("extern void *__builtin_memchr(const void *, int, __SIZE_TYPE__);\n");
 937         add_pre_buffer("extern void *__builtin_memcpy(void *, const void *, __SIZE_TYPE__);\n");
 938         add_pre_buffer("extern void *__builtin_mempcpy(void *, const void *, __SIZE_TYPE__);\n");
 939         add_pre_buffer("extern void *__builtin_memmove(void *, const void *, __SIZE_TYPE__);\n");
 940         add_pre_buffer("extern void *__builtin_memset(void *, int, __SIZE_TYPE__);\n");
 941         add_pre_buffer("extern int __builtin_memcmp(const void *, const void *, __SIZE_TYPE__);\n");
 942         add_pre_buffer("extern char *__builtin_strcat(char *, const char *);\n");
 943         add_pre_buffer("extern char *__builtin_strncat(char *, const char *, __SIZE_TYPE__);\n");
 944         add_pre_buffer("extern int __builtin_strcmp(const char *, const char *);\n");
 945         add_pre_buffer("extern int __builtin_strncmp(const char *, const char *, __SIZE_TYPE__);\n");
 946         add_pre_buffer("extern int __builtin_strcasecmp(const char *, const char *);\n");
 947         add_pre_buffer("extern int __builtin_strncasecmp(const char *, const char *, __SIZE_TYPE__);\n");
 948         add_pre_buffer("extern char *__builtin_strchr(const char *, int);\n");
 949         add_pre_buffer("extern char *__builtin_strrchr(const char *, int);\n");
 950         add_pre_buffer("extern char *__builtin_strcpy(char *, const char *);\n");
 951         add_pre_buffer("extern char *__builtin_strncpy(char *, const char *, __SIZE_TYPE__);\n");
 952         add_pre_buffer("extern char *__builtin_strdup(const char *);\n");
 953         add_pre_buffer("extern char *__builtin_strndup(const char *, __SIZE_TYPE__);\n");
 954         add_pre_buffer("extern __SIZE_TYPE__ __builtin_strspn(const char *, const char *);\n");
 955         add_pre_buffer("extern __SIZE_TYPE__ __builtin_strcspn(const char *, const char *);\n");
 956         add_pre_buffer("extern char * __builtin_strpbrk(const char *, const char *);\n");
 957         add_pre_buffer("extern char* __builtin_stpcpy(const char *, const char*);\n");
 958         add_pre_buffer("extern char* __builtin_stpncpy(const char *, const char*, __SIZE_TYPE__);\n");
 959         add_pre_buffer("extern __SIZE_TYPE__ __builtin_strlen(const char *);\n");
 960         add_pre_buffer("extern char *__builtin_strstr(const char *, const char *);\n");
 961         add_pre_buffer("extern char *__builtin_strcasestr(const char *, const char *);\n");
 962         add_pre_buffer("extern char *__builtin_strnstr(const char *, const char *, __SIZE_TYPE__);\n");
 963
 964         /* And even some from <strings.h> */
 965         add_pre_buffer("extern int  __builtin_bcmp(const void *, const void *, __SIZE_TYPE__);\n");
 966         add_pre_buffer("extern void __builtin_bcopy(const void *, void *, __SIZE_TYPE__);\n");
 967         add_pre_buffer("extern void __builtin_bzero(void *, __SIZE_TYPE__);\n");
 968         add_pre_buffer("extern char*__builtin_index(const char *, int);\n");
 969         add_pre_buffer("extern char*__builtin_rindex(const char *, int);\n");
 970
 971         /* And bitwise operations.. */
 972         add_pre_buffer("extern int __builtin_clrsb(int);\n");
 973         add_pre_buffer("extern int __builtin_clrsbl(long);\n");
 974         add_pre_buffer("extern int __builtin_clrsbll(long long);\n");
 975         add_pre_buffer("extern int __builtin_clz(int);\n");
 976         add_pre_buffer("extern int __builtin_clzl(long);\n");
 977         add_pre_buffer("extern int __builtin_clzll(long long);\n");
 978         add_pre_buffer("extern int __builtin_ctz(int);\n");
 979         add_pre_buffer("extern int __builtin_ctzl(long);\n");
 980         add_pre_buffer("extern int __builtin_ctzll(long long);\n");
 981         add_pre_buffer("extern int __builtin_ffs(int);\n");
 982         add_pre_buffer("extern int __builtin_ffsl(long);\n");
 983         add_pre_buffer("extern int __builtin_ffsll(long long);\n");
 984         add_pre_buffer("extern int __builtin_parity(unsigned int);\n");
 985         add_pre_buffer("extern int __builtin_parityl(unsigned long);\n");
 986         add_pre_buffer("extern int __builtin_parityll(unsigned long long);\n");
 987         add_pre_buffer("extern int __builtin_popcount(unsigned int);\n");
 988         add_pre_buffer("extern int __builtin_popcountl(unsigned long);\n");
 989         add_pre_buffer("extern int __builtin_popcountll(unsigned long long);\n");
 990
 991         /* And byte swaps.. */
 992         add_pre_buffer("extern unsigned short __builtin_bswap16(unsigned short);\n");
 993         add_pre_buffer("extern unsigned int __builtin_bswap32(unsigned int);\n");
 994         add_pre_buffer("extern unsigned long long __builtin_bswap64(unsigned long long);\n");
 995
 996         /* And atomic memory access functions.. */
 997         add_pre_buffer("extern int __sync_fetch_and_add(void *, ...);\n");
 998         add_pre_buffer("extern int __sync_fetch_and_sub(void *, ...);\n");
 999         add_pre_buffer("extern int __sync_fetch_and_or(void *, ...);\n");
1000         add_pre_buffer("extern int __sync_fetch_and_and(void *, ...);\n");
1001         add_pre_buffer("extern int __sync_fetch_and_xor(void *, ...);\n");
1002         add_pre_buffer("extern int __sync_fetch_and_nand(void *, ...);\n");
1003         add_pre_buffer("extern int __sync_add_and_fetch(void *, ...);\n");
1004         add_pre_buffer("extern int __sync_sub_and_fetch(void *, ...);\n");
1005         add_pre_buffer("extern int __sync_or_and_fetch(void *, ...);\n");
1006         add_pre_buffer("extern int __sync_and_and_fetch(void *, ...);\n");
1007         add_pre_buffer("extern int __sync_xor_and_fetch(void *, ...);\n");
1008         add_pre_buffer("extern int __sync_nand_and_fetch(void *, ...);\n");
1009         add_pre_buffer("extern int __sync_bool_compare_and_swap(void *, ...);\n");
1010         add_pre_buffer("extern int __sync_val_compare_and_swap(void *, ...);\n");
1011         add_pre_buffer("extern void __sync_synchronize();\n");
1012         add_pre_buffer("extern int __sync_lock_test_and_set(void *, ...);\n");
1013         add_pre_buffer("extern void __sync_lock_release(void *, ...);\n");
1014
1015         /* And some random ones.. */
1016         add_pre_buffer("extern void *__builtin_return_address(unsigned int);\n");
1017         add_pre_buffer("extern void *__builtin_extract_return_addr(void *);\n");
1018         add_pre_buffer("extern void *__builtin_frame_address(unsigned int);\n");
1019         add_pre_buffer("extern void __builtin_trap(void);\n");
1020         add_pre_buffer("extern void *__builtin_alloca(__SIZE_TYPE__);\n");
1021         add_pre_buffer("extern void __builtin_prefetch (const void *, ...);\n");
1022         add_pre_buffer("extern long __builtin_alpha_extbl(long, long);\n");
1023         add_pre_buffer("extern long __builtin_alpha_extwl(long, long);\n");
1024         add_pre_buffer("extern long __builtin_alpha_insbl(long, long);\n");
1025         add_pre_buffer("extern long __builtin_alpha_inswl(long, long);\n");
1026         add_pre_buffer("extern long __builtin_alpha_insql(long, long);\n");
1027         add_pre_buffer("extern long __builtin_alpha_inslh(long, long);\n");
1028         add_pre_buffer("extern long __builtin_alpha_cmpbge(long, long);\n");
1029         add_pre_buffer("extern int  __builtin_abs(int);\n");
1030         add_pre_buffer("extern long __builtin_labs(long);\n");
1031         add_pre_buffer("extern long long __builtin_llabs(long long);\n");
1032         add_pre_buffer("extern double __builtin_fabs(double);\n");
1033         add_pre_buffer("extern __SIZE_TYPE__ __builtin_va_arg_pack_len(void);\n");
1034
1035         /* Add Blackfin-specific stuff */
1036         add_pre_buffer(
1037                 "#ifdef __bfin__\n"
1038                 "extern void __builtin_bfin_csync(void);\n"
1039                 "extern void __builtin_bfin_ssync(void);\n"
1040                 "extern int __builtin_bfin_norm_fr1x32(int);\n"
1041                 "#endif\n"
1042         );
1043
1044         /* And some floating point stuff.. */
1045         add_pre_buffer("extern int __builtin_isgreater(float, float);\n");
1046         add_pre_buffer("extern int __builtin_isgreaterequal(float, float);\n");
1047         add_pre_buffer("extern int __builtin_isless(float, float);\n");
1048         add_pre_buffer("extern int __builtin_islessequal(float, float);\n");
1049         add_pre_buffer("extern int __builtin_islessgreater(float, float);\n");
1050         add_pre_buffer("extern int __builtin_isunordered(float, float);\n");
1051
1052         /* And some INFINITY / NAN stuff.. */
1053         add_pre_buffer("extern double __builtin_huge_val(void);\n");
1054         add_pre_buffer("extern float __builtin_huge_valf(void);\n");
1055         add_pre_buffer("extern long double __builtin_huge_vall(void);\n");
1056         add_pre_buffer("extern double __builtin_inf(void);\n");
1057         add_pre_buffer("extern float __builtin_inff(void);\n");
1058         add_pre_buffer("extern long double __builtin_infl(void);\n");
1059         add_pre_buffer("extern double __builtin_nan(const char *);\n");
1060         add_pre_buffer("extern float __builtin_nanf(const char *);\n");
1061         add_pre_buffer("extern long double __builtin_nanl(const char *);\n");
1062
1063         /* And some __FORTIFY_SOURCE ones.. */
1064         add_pre_buffer ("extern __SIZE_TYPE__ __builtin_object_size(const void *, int);\n");
1065         add_pre_buffer ("extern void * __builtin___memcpy_chk(void *, const void *, __SIZE_TYPE__, __SIZE_TYPE__);\n");
1066         add_pre_buffer ("extern void * __builtin___memmove_chk(void *, const void *, __SIZE_TYPE__, __SIZE_TYPE__);\n");
1067         add_pre_buffer ("extern void * __builtin___mempcpy_chk(void *, const void *, __SIZE_TYPE__, __SIZE_TYPE__);\n");
1068         add_pre_buffer ("extern void * __builtin___memset_chk(void *, int, __SIZE_TYPE__, __SIZE_TYPE__);\n");
1069         add_pre_buffer ("extern int __builtin___sprintf_chk(char *, int, __SIZE_TYPE__, const char *, ...);\n");
1070         add_pre_buffer ("extern int __builtin___snprintf_chk(char *, __SIZE_TYPE__, int , __SIZE_TYPE__, const char *, ...);\n");
1071         add_pre_buffer ("extern char * __builtin___stpcpy_chk(char *, const char *, __SIZE_TYPE__);\n");
1072         add_pre_buffer ("extern char * __builtin___strcat_chk(char *, const char *, __SIZE_TYPE__);\n");
1073         add_pre_buffer ("extern char * __builtin___strcpy_chk(char *, const char *, __SIZE_TYPE__);\n");
1074         add_pre_buffer ("extern char * __builtin___strncat_chk(char *, const char *, __SIZE_TYPE__, __SIZE_TYPE__);\n");
1075         add_pre_buffer ("extern char * __builtin___strncpy_chk(char *, const char *, __SIZE_TYPE__, __SIZE_TYPE__);\n");
1076         add_pre_buffer ("extern int __builtin___vsprintf_chk(char *, int, __SIZE_TYPE__, const char *, __builtin_va_list);\n");
1077         add_pre_buffer ("extern int __builtin___vsnprintf_chk(char *, __SIZE_TYPE__, int, __SIZE_TYPE__, const char *, __builtin_va_list ap);\n");
1078         add_pre_buffer ("extern void __builtin_unreachable(void);\n");
1079
1080         /* And some from <stdlib.h> */
1081         add_pre_buffer("extern void __builtin_abort(void);\n");
1082         add_pre_buffer("extern void *__builtin_calloc(__SIZE_TYPE__, __SIZE_TYPE__);\n");
1083         add_pre_buffer("extern void __builtin_exit(int);\n");
1084         add_pre_buffer("extern void *__builtin_malloc(__SIZE_TYPE__);\n");
1085         add_pre_buffer("extern void *__builtin_realloc(void *, __SIZE_TYPE__);\n");
1086         add_pre_buffer("extern void __builtin_free(void *);\n");
1087
1088         /* And some from <stdio.h> */
1089         add_pre_buffer("extern int __builtin_printf(const char *, ...);\n");
1090         add_pre_buffer("extern int __builtin_sprintf(char *, const char *, ...);\n");
1091         add_pre_buffer("extern int __builtin_snprintf(char *, __SIZE_TYPE__, const char *, ...);\n");
1092         add_pre_buffer("extern int __builtin_puts(const char *);\n");
1093         add_pre_buffer("extern int __builtin_vprintf(const char *, __builtin_va_list);\n");
1094         add_pre_buffer("extern int __builtin_vsprintf(char *, const char *, __builtin_va_list);\n");
1095         add_pre_buffer("extern int __builtin_vsnprintf(char *, __SIZE_TYPE__, const char *, __builtin_va_list ap);\n");
1096 }
1097
1098 void create_builtin_stream(void)
1099 {
1100         add_pre_buffer("#weak_define __GNUC__ %d\n", gcc_major);
1101         add_pre_buffer("#weak_define __GNUC_MINOR__ %d\n", gcc_minor);
1102         add_pre_buffer("#weak_define __GNUC_PATCHLEVEL__ %d\n", gcc_patchlevel);
1103
1104         /* add the multiarch include directories, if any */
1105         if (multiarch_dir && *multiarch_dir) {
1106                 add_pre_buffer("#add_system \"/usr/include/%s\"\n", multiarch_dir);
1107                 add_pre_buffer("#add_system \"/usr/local/include/%s\"\n", multiarch_dir);
1108         }
1109
1110         /* We add compiler headers path here because we have to parse
1111          * the arguments to get it, falling back to default. */
1112         add_pre_buffer("#add_system \"%s/include\"\n", gcc_base_dir);
1113         add_pre_buffer("#add_system \"%s/include-fixed\"\n", gcc_base_dir);
1114
1115         add_pre_buffer("#define __extension__\n");
1116         add_pre_buffer("#define __pragma__\n");
1117
1118         // gcc defines __SIZE_TYPE__ to be size_t.  For linux/i86 and
1119         // solaris/sparc that is really "unsigned int" and for linux/x86_64
1120         // it is "long unsigned int".  In either case we can probably
1121         // get away with this.  We need the #weak_define as cgcc will define
1122         // the right __SIZE_TYPE__.
1123         if (size_t_ctype == &ulong_ctype)
1124                 add_pre_buffer("#weak_define __SIZE_TYPE__ long unsigned int\n");
1125         else
1126                 add_pre_buffer("#weak_define __SIZE_TYPE__ unsigned int\n");
1127         add_pre_buffer("#weak_define __STDC__ 1\n");
1128
1129         switch (standard)
1130         {
1131                 case STANDARD_C89:
1132                         add_pre_buffer("#weak_define __STRICT_ANSI__\n");
1133                         break;
1134
1135                 case STANDARD_C94:
1136                         add_pre_buffer("#weak_define __STDC_VERSION__ 199409L\n");
1137                         add_pre_buffer("#weak_define __STRICT_ANSI__\n");
1138                         break;
1139
1140                 case STANDARD_C99:
1141                         add_pre_buffer("#weak_define __STDC_VERSION__ 199901L\n");
1142                         add_pre_buffer("#weak_define __STRICT_ANSI__\n");
1143                         break;
1144
1145                 case STANDARD_GNU89:
1146                         break;
1147
1148                 case STANDARD_GNU99:
1149                         add_pre_buffer("#weak_define __STDC_VERSION__ 199901L\n");
1150                         break;
1151
1152                 case STANDARD_C11:
1153                         add_pre_buffer("#weak_define __STRICT_ANSI__ 1\n");
1154                 case STANDARD_GNU11:
1155                         add_pre_buffer("#weak_define __STDC_NO_ATOMICS__ 1\n");
1156                         add_pre_buffer("#weak_define __STDC_NO_COMPLEX__ 1\n");
1157                         add_pre_buffer("#weak_define __STDC_NO_THREADS__ 1\n");
1158                         add_pre_buffer("#weak_define __STDC_VERSION__ 201112L\n");
1159                         break;
1160
1161                 default:
1162                         assert (0);
1163         }
1164
1165         add_pre_buffer("#define __builtin_stdarg_start(a,b) ((a) = (__builtin_va_list)(&(b)))\n");
1166         add_pre_buffer("#define __builtin_va_start(a,b) ((a) = (__builtin_va_list)(&(b)))\n");
1167         add_pre_buffer("#define __builtin_ms_va_start(a,b) ((a) = (__builtin_ms_va_list)(&(b)))\n");
1168         add_pre_buffer("#define __builtin_va_arg(arg,type)  ({ type __va_arg_ret = *(type *)(arg); arg += sizeof(type); __va_arg_ret; })\n");
1169         add_pre_buffer("#define __builtin_va_alist (*(void *)0)\n");
1170         add_pre_buffer("#define __builtin_va_arg_incr(x) ((x) + 1)\n");
1171         add_pre_buffer("#define __builtin_va_copy(dest, src) ({ dest = src; (void)0; })\n");
1172         add_pre_buffer("#define __builtin_ms_va_copy(dest, src) ({ dest = src; (void)0; })\n");
1173         add_pre_buffer("#define __builtin_va_end(arg)\n");
1174         add_pre_buffer("#define __builtin_ms_va_end(arg)\n");
1175         add_pre_buffer("#define __builtin_va_arg_pack()\n");
1176
1177         /* FIXME! We need to do these as special magic macros at expansion time! */
1178         add_pre_buffer("#define __BASE_FILE__ \"base_file.c\"\n");
1179
1180         if (optimize)
1181                 add_pre_buffer("#define __OPTIMIZE__ 1\n");
1182         if (optimize_size)
1183                 add_pre_buffer("#define __OPTIMIZE_SIZE__ 1\n");
1184 }
1185
1186 static struct symbol_list *sparse_tokenstream(struct token *token)
1187 {
1188         int builtin = token && !token->pos.stream;
1189
1190         // Preprocess the stream
1191         token = preprocess(token);
1192
1193         if (dump_macro_defs && !builtin)
1194                 dump_macro_definitions();
1195
1196         if (preprocess_only) {
1197                 while (!eof_token(token)) {
1198                         int prec = 1;
1199                         struct token *next = token->next;
1200                         const char *separator = "";
1201                         if (next->pos.whitespace)
1202                                 separator = " ";
1203                         if (next->pos.newline) {
1204                                 separator = "\n\t\t\t\t\t";
1205                                 prec = next->pos.pos;
1206                                 if (prec > 4)
1207                                         prec = 4;
1208                         }
1209                         printf("%s%.*s", show_token(token), prec, separator);
1210                         token = next;
1211                 }
1212                 putchar('\n');
1213
1214                 return NULL;
1215         }
1216
1217         // Parse the resulting C code
1218         while (!eof_token(token))
1219                 token = external_declaration(token, &translation_unit_used_list, NULL);
1220         return translation_unit_used_list;
1221 }
1222
1223 static struct symbol_list *sparse_file(const char *filename)
1224 {
1225         int fd;
1226         struct token *token;
1227
1228         if (strcmp (filename, "-") == 0) {
1229                 fd = 0;
1230         } else {
1231                 fd = open(filename, O_RDONLY);
1232                 if (fd < 0)
1233                         die("No such file: %s", filename);
1234         }
1235
1236         // Tokenize the input stream
1237         token = tokenize(filename, fd, NULL, includepath);
1238         close(fd);
1239
1240         return sparse_tokenstream(token);
1241 }
1242
1243 /*
1244  * This handles the "-include" directive etc: we're in global
1245  * scope, and all types/macros etc will affect all the following
1246  * files.
1247  *
1248  * NOTE NOTE NOTE! "#undef" of anything in this stage will
1249  * affect all subsequent files too, i.e. we can have non-local
1250  * behaviour between files!
1251  */
1252 static struct symbol_list *sparse_initial(void)
1253 {
1254         int i;
1255
1256         // Prepend any "include" file to the stream.
1257         // We're in global scope, it will affect all files!
1258         for (i = 0; i < cmdline_include_nr; i++)
1259                 add_pre_buffer("#argv_include \"%s\"\n", cmdline_include[i]);
1260
1261         return sparse_tokenstream(pre_buffer_begin);
1262 }
1263
1264 struct symbol_list *sparse_initialize(int argc, char **argv, struct string_list **filelist)
1265 {
1266         char **args;
1267         struct symbol_list *list;
1268
1269         // Initialize symbol stream first, so that we can add defines etc
1270         init_symbols();
1271
1272         args = argv;
1273         for (;;) {
1274                 char *arg = *++args;
1275                 if (!arg)
1276                         break;
1277
1278                 if (arg[0] == '-' && arg[1]) {
1279                         args = handle_switch(arg+1, args);
1280                         continue;
1281                 }
1282                 add_ptr_list_notag(filelist, arg);
1283         }
1284         handle_switch_W_finalize();
1285         handle_switch_v_finalize();
1286
1287         handle_arch_finalize();
1288
1289         list = NULL;
1290         if (!ptr_list_empty(filelist)) {
1291                 // Initialize type system
1292                 init_ctype();
1293
1294                 create_builtin_stream();
1295                 predefined_macros();
1296                 if (!preprocess_only)
1297                         declare_builtin_functions();
1298
1299                 list = sparse_initial();
1300
1301                 /*
1302                  * Protect the initial token allocations, since
1303                  * they need to survive all the others
1304                  */
1305                 protect_token_alloc();
1306         }
1307         return list;
1308 }
1309
1310 struct symbol_list * sparse_keep_tokens(char *filename)
1311 {
1312         struct symbol_list *res;
1313
1314         /* Clear previous symbol list */
1315         translation_unit_used_list = NULL;
1316
1317         new_file_scope();
1318         res = sparse_file(filename);
1319
1320         /* And return it */
1321         return res;
1322 }
1323
1324
1325 struct symbol_list * __sparse(char *filename)
1326 {
1327         struct symbol_list *res;
1328
1329         res = sparse_keep_tokens(filename);
1330
1331         /* Drop the tokens for this file after parsing */
1332         clear_token_alloc();
1333
1334         /* And return it */
1335         return res;
1336 }
1337
1338 struct symbol_list * sparse(char *filename)
1339 {
1340         struct symbol_list *res = __sparse(filename);
1341
1342         if (has_error & ERROR_CURR_PHASE)
1343                 has_error = ERROR_PREV_PHASE;
1344         /* Evaluate the complete symbol list */
1345         evaluate_symbol_list(res);
1346
1347         return res;
1348 }