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 parse_error;
  51 int has_error = 0;
  52
  53 #ifndef __GNUC__
  54 # define __GNUC__ 2
  55 # define __GNUC_MINOR__ 95
  56 # define __GNUC_PATCHLEVEL__ 0
  57 #endif
  58
  59 int gcc_major = __GNUC__;
  60 int gcc_minor = __GNUC_MINOR__;
  61 int gcc_patchlevel = __GNUC_PATCHLEVEL__;
  62
  63 static const char *gcc_base_dir = GCC_BASE;
  64 static const char *multiarch_dir = MULTIARCH_TRIPLET;
  65
  66 struct token *skip_to(struct token *token, int op)
  67 {
  68         while (!match_op(token, op) && !eof_token(token))
  69                 token = token->next;
  70         return token;
  71 }
  72
  73 struct token *expect(struct token *token, int op, const char *where)
  74 {
  75         if (!match_op(token, op)) {
  76                 static struct token bad_token;
  77                 if (token != &bad_token) {
  78                         bad_token.next = token;
  79                         sparse_error(token->pos, "Expected %s %s", show_special(op), where);
  80                         sparse_error(token->pos, "got %s", show_token(token));
  81                 }
  82                 if (op == ';')
  83                         return skip_to(token, op);
  84                 return &bad_token;
  85         }
  86         return token->next;
  87 }
  88
  89 unsigned int hexval(unsigned int c)
  90 {
  91         int retval = 256;
  92         switch (c) {
  93         case '0'...'9':
  94                 retval = c - '0';
  95                 break;
  96         case 'a'...'f':
  97                 retval = c - 'a' + 10;
  98                 break;
  99         case 'A'...'F':
 100                 retval = c - 'A' + 10;
 101                 break;
 102         }
 103         return retval;
 104 }
 105
 106 static void do_warn(const char *type, struct position pos, const char * fmt, va_list args)
 107 {
 108         static char buffer[512];
 109         const char *name;
 110
 111         vsprintf(buffer, fmt, args);
 112         name = stream_name(pos.stream);
 113
 114         fprintf(stderr, "%s:%d:%d: %s%s\n",
 115                 name, pos.line, pos.pos, type, buffer);
 116 }
 117
 118 static int max_warnings = 100;
 119 static int show_info = 1;
 120
 121 void info(struct position pos, const char * fmt, ...)
 122 {
 123         va_list args;
 124
 125         if (!show_info)
 126                 return;
 127         va_start(args, fmt);
 128         do_warn("", pos, fmt, args);
 129         va_end(args);
 130 }
 131
 132 static void do_error(struct position pos, const char * fmt, va_list args)
 133 {
 134         static int errors = 0;
 135
 136         parse_error = 1;
 137         die_if_error = 1;
 138         show_info = 1;
 139         /* Shut up warnings after an error */
 140         has_error |= ERROR_CURR_PHASE;
 141         if (errors > 100) {
 142                 static int once = 0;
 143                 show_info = 0;
 144                 if (once)
 145                         return;
 146                 fmt = "too many errors";
 147                 once = 1;
 148         }
 149
 150         do_warn("error: ", pos, fmt, args);
 151         errors++;
 152 }
 153
 154 void warning(struct position pos, const char * fmt, ...)
 155 {
 156         va_list args;
 157
 158         if (Wsparse_error) {
 159                 va_start(args, fmt);
 160                 do_error(pos, fmt, args);
 161                 va_end(args);
 162                 return;
 163         }
 164
 165         if (!max_warnings || has_error) {
 166                 show_info = 0;
 167                 return;
 168         }
 169
 170         if (!--max_warnings) {
 171                 show_info = 0;
 172                 fmt = "too many warnings";
 173         }
 174
 175         va_start(args, fmt);
 176         do_warn("warning: ", pos, fmt, args);
 177         va_end(args);
 178 }
 179
 180 void sparse_error(struct position pos, const char * fmt, ...)
 181 {
 182         va_list args;
 183         va_start(args, fmt);
 184         do_error(pos, fmt, args);
 185         va_end(args);
 186 }
 187
 188 void expression_error(struct expression *expr, const char *fmt, ...)
 189 {
 190         va_list args;
 191         va_start(args, fmt);
 192         do_error(expr->pos, fmt, args);
 193         va_end(args);
 194         expr->ctype = &bad_ctype;
 195 }
 196
 197 NORETURN_ATTR
 198 void error_die(struct position pos, const char * fmt, ...)
 199 {
 200         va_list args;
 201         va_start(args, fmt);
 202         do_warn("error: ", pos, fmt, args);
 203         va_end(args);
 204         exit(1);
 205 }
 206
 207 NORETURN_ATTR
 208 void die(const char *fmt, ...)
 209 {
 210         va_list args;
 211         static char buffer[512];
 212
 213         va_start(args, fmt);
 214         vsnprintf(buffer, sizeof(buffer), fmt, args);
 215         va_end(args);
 216
 217         fprintf(stderr, "%s\n", buffer);
 218         exit(1);
 219 }
 220
 221 static struct token *pre_buffer_begin = NULL;
 222 static struct token *pre_buffer_end = NULL;
 223
 224 int Waddress = 0;
 225 int Waddress_space = 1;
 226 int Wbig_constants = 1;
 227 int Wbitwise = 1;
 228 int Wcast_to_as = 0;
 229 int Wcast_truncate = 1;
 230 int Wconstexpr_not_const = 0;
 231 int Wcontext = 1;
 232 int Wdecl = 1;
 233 int Wdeclarationafterstatement = -1;
 234 int Wdefault_bitfield_sign = 0;
 235 int Wdesignated_init = 1;
 236 int Wdo_while = 0;
 237 int Winit_cstring = 0;
 238 int Wenum_mismatch = 1;
 239 int Wsparse_error = 0;
 240 int Wmemcpy_max_count = 1;
 241 int Wnon_ansi_function_declaration = 1;
 242 int Wnon_pointer_null = 1;
 243 int Wold_initializer = 1;
 244 int Wone_bit_signed_bitfield = 1;
 245 int Woverride_init = 1;
 246 int Woverride_init_all = 0;
 247 int Woverride_init_whole_range = 0;
 248 int Wparen_string = 0;
 249 int Wpointer_arith = 0;
 250 int Wptr_subtraction_blows = 0;
 251 int Wreturn_void = 0;
 252 int Wshadow = 0;
 253 int Wsizeof_bool = 0;
 254 int Wtautological_compare = 0;
 255 int Wtransparent_union = 0;
 256 int Wtypesign = 0;
 257 int Wundef = 0;
 258 int Wuninitialized = 1;
 259 int Wunknown_attribute = 0;
 260 int Wvla = 1;
 261
 262 int dump_macro_defs = 0;
 263
 264 int dbg_entry = 0;
 265 int dbg_dead = 0;
 266
 267 int fmem_report = 0;
 268 int fdump_linearize;
 269 unsigned long long fmemcpy_max_count = 100000;
 270
 271 int preprocess_only;
 272
 273 static enum { STANDARD_C89,
 274               STANDARD_C94,
 275               STANDARD_C99,
 276               STANDARD_C11,
 277               STANDARD_GNU11,
 278               STANDARD_GNU89,
 279               STANDARD_GNU99, } standard = STANDARD_GNU89;
 280
 281 #define ARCH_LP32  0
 282 #define ARCH_LP64  1
 283 #define ARCH_LLP64 2
 284
 285 #ifdef __x86_64__
 286 #define ARCH_M64_DEFAULT ARCH_LP64
 287 #else
 288 #define ARCH_M64_DEFAULT ARCH_LP32
 289 #endif
 290
 291 int arch_m64 = ARCH_M64_DEFAULT;
 292 int arch_msize_long = 0;
 293
 294 #ifdef __BIG_ENDIAN__
 295 #define ARCH_BIG_ENDIAN 1
 296 #else
 297 #define ARCH_BIG_ENDIAN 0
 298 #endif
 299 int arch_big_endian = ARCH_BIG_ENDIAN;
 300
 301
 302 #define CMDLINE_INCLUDE 20
 303 static int cmdline_include_nr = 0;
 304 static char *cmdline_include[CMDLINE_INCLUDE];
 305
 306
 307 void add_pre_buffer(const char *fmt, ...)
 308 {
 309         va_list args;
 310         unsigned int size;
 311         struct token *begin, *end;
 312         char buffer[4096];
 313
 314         va_start(args, fmt);
 315         size = vsnprintf(buffer, sizeof(buffer), fmt, args);
 316         va_end(args);
 317         begin = tokenize_buffer(buffer, size, &end);
 318         if (!pre_buffer_begin)
 319                 pre_buffer_begin = begin;
 320         if (pre_buffer_end)
 321                 pre_buffer_end->next = begin;
 322         pre_buffer_end = end;
 323 }
 324
 325 static char **handle_switch_D(char *arg, char **next)
 326 {
 327         const char *name = arg + 1;
 328         const char *value = "1";
 329
 330         if (!*name) {
 331                 arg = *++next;
 332                 if (!arg)
 333                         die("argument to `-D' is missing");
 334                 name = arg;
 335         }
 336
 337         for (;;arg++) {
 338                 char c;
 339                 c = *arg;
 340                 if (!c)
 341                         break;
 342                 if (c == '=') {
 343                         *arg = '\0';
 344                         value = arg + 1;
 345                         break;
 346                 }
 347         }
 348         add_pre_buffer("#define %s %s\n", name, value);
 349         return next;
 350 }
 351
 352 static char **handle_switch_E(char *arg, char **next)
 353 {
 354         if (arg[1] == '\0')
 355                 preprocess_only = 1;
 356         return next;
 357 }
 358
 359 static char **handle_switch_I(char *arg, char **next)
 360 {
 361         char *path = arg+1;
 362
 363         switch (arg[1]) {
 364         case '-':
 365                 add_pre_buffer("#split_include\n");
 366                 break;
 367
 368         case '\0':      /* Plain "-I" */
 369                 path = *++next;
 370                 if (!path)
 371                         die("missing argument for -I option");
 372                 /* Fall through */
 373         default:
 374                 add_pre_buffer("#add_include \"%s/\"\n", path);
 375         }
 376         return next;
 377 }
 378
 379 static void add_cmdline_include(char *filename)
 380 {
 381         if (cmdline_include_nr >= CMDLINE_INCLUDE)
 382                 die("too many include files for %s\n", filename);
 383         cmdline_include[cmdline_include_nr++] = filename;
 384 }
 385
 386 static char **handle_switch_i(char *arg, char **next)
 387 {
 388         if (*next && !strcmp(arg, "include"))
 389                 add_cmdline_include(*++next);
 390         else if (*next && !strcmp(arg, "imacros"))
 391                 add_cmdline_include(*++next);
 392         else if (*next && !strcmp(arg, "isystem")) {
 393                 char *path = *++next;
 394                 if (!path)
 395                         die("missing argument for -isystem option");
 396                 add_pre_buffer("#add_isystem \"%s/\"\n", path);
 397         } else if (*next && !strcmp(arg, "idirafter")) {
 398                 char *path = *++next;
 399                 if (!path)
 400                         die("missing argument for -idirafter option");
 401                 add_pre_buffer("#add_dirafter \"%s/\"\n", path);
 402         }
 403         return next;
 404 }
 405
 406 static char **handle_switch_M(char *arg, char **next)
 407 {
 408         if (!strcmp(arg, "MF") || !strcmp(arg,"MQ") || !strcmp(arg,"MT")) {
 409                 if (!*next)
 410                         die("missing argument for -%s option", arg);
 411                 return next + 1;
 412         }
 413         return next;
 414 }
 415
 416 static char **handle_multiarch_dir(char *arg, char **next)
 417 {
 418         multiarch_dir = *++next;
 419         if (!multiarch_dir)
 420                 die("missing argument for -multiarch-dir option");
 421         return next;
 422 }
 423
 424 static char **handle_switch_m(char *arg, char **next)
 425 {
 426         if (!strcmp(arg, "m64")) {
 427                 arch_m64 = ARCH_LP64;
 428         } else if (!strcmp(arg, "m32")) {
 429                 arch_m64 = ARCH_LP32;
 430         } else if (!strcmp(arg, "msize-llp64")) {
 431                 arch_m64 = ARCH_LLP64;
 432         } else if (!strcmp(arg, "msize-long")) {
 433                 arch_msize_long = 1;
 434         } else if (!strcmp(arg, "multiarch-dir")) {
 435                 return handle_multiarch_dir(arg, next);
 436         } else if (!strcmp(arg, "mbig-endian")) {
 437                 arch_big_endian = 1;
 438         } else if (!strcmp(arg, "mlittle-endian")) {
 439                 arch_big_endian = 0;
 440         }
 441         return next;
 442 }
 443
 444 static void handle_arch_m64_finalize(void)
 445 {
 446         switch (arch_m64) {
 447         case ARCH_LP32:
 448                 /* default values */
 449 #if defined(__x86_64__) || defined (__i386)
 450                 add_pre_buffer("#weak_define __i386__ 1\n");
 451                 add_pre_buffer("#weak_define __i386 1\n");
 452 #endif
 453                 return;
 454         case ARCH_LP64:
 455                 bits_in_long = 64;
 456                 max_int_alignment = 8;
 457                 size_t_ctype = &ulong_ctype;
 458                 ssize_t_ctype = &long_ctype;
 459                 add_pre_buffer("#weak_define __LP64__ 1\n");
 460                 add_pre_buffer("#weak_define _LP64 1\n");
 461                 goto case_64bit_common;
 462         case ARCH_LLP64:
 463                 bits_in_long = 32;
 464                 max_int_alignment = 4;
 465                 size_t_ctype = &ullong_ctype;
 466                 ssize_t_ctype = &llong_ctype;
 467                 add_pre_buffer("#weak_define __LLP64__ 1\n");
 468                 goto case_64bit_common;
 469         case_64bit_common:
 470                 bits_in_pointer = 64;
 471                 pointer_alignment = 8;
 472 #if defined(__x86_64__) || defined (__i386)
 473                 add_pre_buffer("#weak_define __x86_64__ 1\n");
 474                 add_pre_buffer("#weak_define __x86_64 1\n");
 475 #endif
 476                 break;
 477         }
 478 }
 479
 480 static void handle_arch_msize_long_finalize(void)
 481 {
 482         if (arch_msize_long) {
 483                 size_t_ctype = &ulong_ctype;
 484                 ssize_t_ctype = &long_ctype;
 485         }
 486 }
 487
 488 static void handle_arch_finalize(void)
 489 {
 490         handle_arch_m64_finalize();
 491         handle_arch_msize_long_finalize();
 492 }
 493
 494
 495 static int handle_simple_switch(const char *arg, const char *name, int *flag)
 496 {
 497         int val = 1;
 498
 499         // Prefixe "no-" mean to turn flag off.
 500         if (strncmp(arg, "no-", 3) == 0) {
 501                 arg += 3;
 502                 val = 0;
 503         }
 504
 505         if (strcmp(arg, name) == 0) {
 506                 *flag = val;
 507                 return 1;
 508         }
 509
 510         // not handled
 511         return 0;
 512 }
 513
 514 static char **handle_switch_o(char *arg, char **next)
 515 {
 516         if (!strcmp (arg, "o")) {       // "-o foo"
 517                 if (!*++next)
 518                         die("argument to '-o' is missing");
 519         }
 520         // else "-ofoo"
 521
 522         return next;
 523 }
 524
 525 static const struct warning {
 526         const char *name;
 527         int *flag;
 528 } warnings[] = {
 529         { "address", &Waddress },
 530         { "address-space", &Waddress_space },
 531         { "big-constants", &Wbig_constants },
 532         { "bitwise", &Wbitwise },
 533         { "cast-to-as", &Wcast_to_as },
 534         { "cast-truncate", &Wcast_truncate },
 535         { "constexpr-not-const", &Wconstexpr_not_const},
 536         { "context", &Wcontext },
 537         { "decl", &Wdecl },
 538         { "declaration-after-statement", &Wdeclarationafterstatement },
 539         { "default-bitfield-sign", &Wdefault_bitfield_sign },
 540         { "designated-init", &Wdesignated_init },
 541         { "do-while", &Wdo_while },
 542         { "enum-mismatch", &Wenum_mismatch },
 543         { "init-cstring", &Winit_cstring },
 544         { "memcpy-max-count", &Wmemcpy_max_count },
 545         { "non-ansi-function-declaration", &Wnon_ansi_function_declaration },
 546         { "non-pointer-null", &Wnon_pointer_null },
 547         { "old-initializer", &Wold_initializer },
 548         { "one-bit-signed-bitfield", &Wone_bit_signed_bitfield },
 549         { "override-init", &Woverride_init },
 550         { "override-init-all", &Woverride_init_all },
 551         { "paren-string", &Wparen_string },
 552         { "ptr-subtraction-blows", &Wptr_subtraction_blows },
 553         { "return-void", &Wreturn_void },
 554         { "shadow", &Wshadow },
 555         { "sizeof-bool", &Wsizeof_bool },
 556         { "pointer-arith", &Wpointer_arith },
 557         { "sparse-error", &Wsparse_error },
 558         { "tautological-compare", &Wtautological_compare },
 559         { "transparent-union", &Wtransparent_union },
 560         { "typesign", &Wtypesign },
 561         { "undef", &Wundef },
 562         { "uninitialized", &Wuninitialized },
 563         { "unknown-attribute", &Wunknown_attribute },
 564         { "vla", &Wvla },
 565 };
 566
 567 enum {
 568         WARNING_OFF,
 569         WARNING_ON,
 570         WARNING_FORCE_OFF
 571 };
 572
 573
 574 static char **handle_onoff_switch(char *arg, char **next, const struct warning warnings[], int n)
 575 {
 576         int flag = WARNING_ON;
 577         char *p = arg + 1;
 578         unsigned i;
 579
 580         if (!strcmp(p, "sparse-all")) {
 581                 for (i = 0; i < n; i++) {
 582                         if (*warnings[i].flag != WARNING_FORCE_OFF && warnings[i].flag != &Wsparse_error)
 583                                 *warnings[i].flag = WARNING_ON;
 584                 }
 585         }
 586
 587         // Prefixes "no" and "no-" mean to turn warning off.
 588         if (p[0] == 'n' && p[1] == 'o') {
 589                 p += 2;
 590                 if (p[0] == '-')
 591                         p++;
 592                 flag = WARNING_FORCE_OFF;
 593         }
 594
 595         for (i = 0; i < n; i++) {
 596                 if (!strcmp(p,warnings[i].name)) {
 597                         *warnings[i].flag = flag;
 598                         return next;
 599                 }
 600         }
 601
 602         // Unknown.
 603         return NULL;
 604 }
 605
 606 static char **handle_switch_W(char *arg, char **next)
 607 {
 608         char ** ret = handle_onoff_switch(arg, next, warnings, ARRAY_SIZE(warnings));
 609         if (ret)
 610                 return ret;
 611
 612         // Unknown.
 613         return next;
 614 }
 615
 616 static struct warning debugs[] = {
 617         { "entry", &dbg_entry},
 618         { "dead", &dbg_dead},
 619 };
 620
 621
 622 static char **handle_switch_v(char *arg, char **next)
 623 {
 624         char ** ret = handle_onoff_switch(arg, next, debugs, ARRAY_SIZE(debugs));
 625         if (ret)
 626                 return ret;
 627
 628         // Unknown.
 629         do {
 630                 verbose++;
 631         } while (*++arg == 'v');
 632         return next;
 633 }
 634
 635 static struct warning dumps[] = {
 636         { "D", &dump_macro_defs},
 637 };
 638
 639 static char **handle_switch_d(char *arg, char **next)
 640 {
 641         char ** ret = handle_onoff_switch(arg, next, dumps, ARRAY_SIZE(dumps));
 642         if (ret)
 643                 return ret;
 644
 645         return next;
 646 }
 647
 648
 649 static void handle_onoff_switch_finalize(const struct warning warnings[], int n)
 650 {
 651         unsigned i;
 652
 653         for (i = 0; i < n; i++) {
 654                 if (*warnings[i].flag == WARNING_FORCE_OFF)
 655                         *warnings[i].flag = WARNING_OFF;
 656         }
 657 }
 658
 659 static void handle_switch_W_finalize(void)
 660 {
 661         handle_onoff_switch_finalize(warnings, ARRAY_SIZE(warnings));
 662
 663         /* default Wdeclarationafterstatement based on the C dialect */
 664         if (-1 == Wdeclarationafterstatement)
 665         {
 666                 switch (standard)
 667                 {
 668                         case STANDARD_C89:
 669                         case STANDARD_C94:
 670                                 Wdeclarationafterstatement = 1;
 671                                 break;
 672
 673                         case STANDARD_C99:
 674                         case STANDARD_GNU89:
 675                         case STANDARD_GNU99:
 676                         case STANDARD_C11:
 677                         case STANDARD_GNU11:
 678                                 Wdeclarationafterstatement = 0;
 679                                 break;
 680
 681                         default:
 682                                 assert (0);
 683                 }
 684
 685         }
 686 }
 687
 688 static void handle_switch_v_finalize(void)
 689 {
 690         handle_onoff_switch_finalize(debugs, ARRAY_SIZE(debugs));
 691 }
 692
 693 static char **handle_switch_U(char *arg, char **next)
 694 {
 695         const char *name = arg + 1;
 696         if (*name == '\0')
 697                 name = *++next;
 698         add_pre_buffer ("#undef %s\n", name);
 699         return next;
 700 }
 701
 702 static char **handle_switch_O(char *arg, char **next)
 703 {
 704         int level = 1;
 705         if (arg[1] >= '0' && arg[1] <= '9')
 706                 level = arg[1] - '0';
 707         optimize = level;
 708         optimize_size = arg[1] == 's';
 709         return next;
 710 }
 711
 712 static char **handle_switch_fmemcpy_max_count(char *arg, char **next)
 713 {
 714         unsigned long long val;
 715         char *end;
 716
 717         val = strtoull(arg, &end, 0);
 718         if (*end != '\0' || end == arg)
 719                 die("error: missing argument to \"-fmemcpy-max-count=\"");
 720
 721         if (val == 0)
 722                 val = ~0ULL;
 723         fmemcpy_max_count = val;
 724         return next;
 725 }
 726
 727 static char **handle_switch_ftabstop(char *arg, char **next)
 728 {
 729         char *end;
 730         unsigned long val;
 731
 732         if (*arg == '\0')
 733                 die("error: missing argument to \"-ftabstop=\"");
 734
 735         /* we silently ignore silly values */
 736         val = strtoul(arg, &end, 10);
 737         if (*end == '\0' && 1 <= val && val <= 100)
 738                 tabstop = val;
 739
 740         return next;
 741 }
 742
 743 static int funsigned_char;
 744 static void handle_funsigned_char(void)
 745 {
 746         if (funsigned_char) {
 747                 char_ctype.ctype.modifiers &= ~MOD_SIGNED;
 748                 char_ctype.ctype.modifiers |= MOD_UNSIGNED;
 749         }
 750 }
 751
 752         static char **handle_switch_fdump(char *arg, char **next)
 753 {
 754         if (!strncmp(arg, "linearize", 9)) {
 755                 arg += 9;
 756                 if (*arg == '\0')
 757                         fdump_linearize = 1;
 758                 else if (!strcmp(arg, "=only"))
 759                         fdump_linearize = 2;
 760                 else
 761                         goto err;
 762         }
 763
 764         /* ignore others flags */
 765         return next;
 766
 767 err:
 768         die("error: unknown flag \"-fdump-%s\"", arg);
 769 }
 770
 771 static char **handle_switch_f(char *arg, char **next)
 772 {
 773         arg++;
 774
 775         if (!strncmp(arg, "tabstop=", 8))
 776                 return handle_switch_ftabstop(arg+8, next);
 777         if (!strncmp(arg, "dump-", 5))
 778                 return handle_switch_fdump(arg+5, next);
 779         if (!strncmp(arg, "memcpy-max-count=", 17))
 780                 return handle_switch_fmemcpy_max_count(arg+17, next);
 781
 782         if (!strcmp(arg, "unsigned-char")) {
 783                 funsigned_char = 1;
 784                 return next;
 785         }
 786
 787         /* handle switches w/ arguments above, boolean and only boolean below */
 788         if (handle_simple_switch(arg, "mem-report", &fmem_report))
 789                 return next;
 790
 791         return next;
 792 }
 793
 794 static char **handle_switch_G(char *arg, char **next)
 795 {
 796         if (!strcmp (arg, "G") && *next)
 797                 return next + 1; // "-G 0"
 798         else
 799                 return next;     // "-G0" or (bogus) terminal "-G"
 800 }
 801
 802 static char **handle_switch_a(char *arg, char **next)
 803 {
 804         if (!strcmp (arg, "ansi"))
 805                 standard = STANDARD_C89;
 806
 807         return next;
 808 }
 809
 810 static char **handle_switch_s(char *arg, char **next)
 811 {
 812         if (!strncmp (arg, "std=", 4))
 813         {
 814                 arg += 4;
 815
 816                 if (!strcmp (arg, "c89") ||
 817                     !strcmp (arg, "iso9899:1990"))
 818                         standard = STANDARD_C89;
 819
 820                 else if (!strcmp (arg, "iso9899:199409"))
 821                         standard = STANDARD_C94;
 822
 823                 else if (!strcmp (arg, "c99") ||
 824                          !strcmp (arg, "c9x") ||
 825                          !strcmp (arg, "iso9899:1999") ||
 826                          !strcmp (arg, "iso9899:199x"))
 827                         standard = STANDARD_C99;
 828
 829                 else if (!strcmp (arg, "gnu89"))
 830                         standard = STANDARD_GNU89;
 831
 832                 else if (!strcmp (arg, "gnu99") || !strcmp (arg, "gnu9x"))
 833                         standard = STANDARD_GNU99;
 834
 835                 else if (!strcmp(arg, "c11") ||
 836                          !strcmp(arg, "c1x") ||
 837                          !strcmp(arg, "iso9899:2011"))
 838                         standard = STANDARD_C11;
 839
 840                 else if (!strcmp(arg, "gnu11"))
 841                         standard = STANDARD_GNU11;
 842
 843                 else
 844                         die ("Unsupported C dialect");
 845         }
 846
 847         return next;
 848 }
 849
 850 static char **handle_nostdinc(char *arg, char **next)
 851 {
 852         add_pre_buffer("#nostdinc\n");
 853         return next;
 854 }
 855
 856 static char **handle_switch_n(char *arg, char **next)
 857 {
 858         if (!strcmp (arg, "nostdinc"))
 859                 return handle_nostdinc(arg, next);
 860
 861         return next;
 862 }
 863
 864 static char **handle_base_dir(char *arg, char **next)
 865 {
 866         gcc_base_dir = *++next;
 867         if (!gcc_base_dir)
 868                 die("missing argument for -gcc-base-dir option");
 869         return next;
 870 }
 871
 872 static char **handle_no_lineno(char *arg, char **next)
 873 {
 874         no_lineno = 1;
 875         return next;
 876 }
 877
 878 static char **handle_switch_g(char *arg, char **next)
 879 {
 880         if (!strcmp (arg, "gcc-base-dir"))
 881                 return handle_base_dir(arg, next);
 882
 883         return next;
 884 }
 885
 886 static char **handle_version(char *arg, char **next)
 887 {
 888         printf("%s\n", SPARSE_VERSION);
 889         exit(0);
 890 }
 891
 892 static char **handle_param(char *arg, char **next)
 893 {
 894         char *value = NULL;
 895
 896         /* For now just skip any '--param=*' or '--param *' */
 897         if (*arg == '\0') {
 898                 value = *++next;
 899         } else if (isspace((unsigned char)*arg) || *arg == '=') {
 900                 value = ++arg;
 901         }
 902
 903         if (!value)
 904                 die("missing argument for --param option");
 905
 906         return next;
 907 }
 908
 909 struct switches {
 910         const char *name;
 911         char **(*fn)(char *, char **);
 912         unsigned int prefix:1;
 913 };
 914
 915 static char **handle_long_options(char *arg, char **next)
 916 {
 917         static struct switches cmd[] = {
 918                 { "param", handle_param, 1 },
 919                 { "version", handle_version },
 920                 { "nostdinc", handle_nostdinc },
 921                 { "gcc-base-dir", handle_base_dir},
 922                 { "no-lineno", handle_no_lineno},
 923                 { NULL, NULL }
 924         };
 925         struct switches *s = cmd;
 926
 927         while (s->name) {
 928                 int optlen = strlen(s->name);
 929                 if (!strncmp(s->name, arg, optlen + !s->prefix))
 930                         return s->fn(arg + optlen, next);
 931                 s++;
 932         }
 933         return next;
 934 }
 935
 936 static char **handle_switch(char *arg, char **next)
 937 {
 938         switch (*arg) {
 939         case 'a': return handle_switch_a(arg, next);
 940         case 'D': return handle_switch_D(arg, next);
 941         case 'd': return handle_switch_d(arg, next);
 942         case 'E': return handle_switch_E(arg, next);
 943         case 'f': return handle_switch_f(arg, next);
 944         case 'g': return handle_switch_g(arg, next);
 945         case 'G': return handle_switch_G(arg, next);
 946         case 'I': return handle_switch_I(arg, next);
 947         case 'i': return handle_switch_i(arg, next);
 948         case 'M': return handle_switch_M(arg, next);
 949         case 'm': return handle_switch_m(arg, next);
 950         case 'n': return handle_switch_n(arg, next);
 951         case 'o': return handle_switch_o(arg, next);
 952         case 'O': return handle_switch_O(arg, next);
 953         case 's': return handle_switch_s(arg, next);
 954         case 'U': return handle_switch_U(arg, next);
 955         case 'v': return handle_switch_v(arg, next);
 956         case 'W': return handle_switch_W(arg, next);
 957         case '-': return handle_long_options(arg + 1, next);
 958         default:
 959                 break;
 960         }
 961
 962         /*
 963          * Ignore unknown command line options:
 964          * they're probably gcc switches
 965          */
 966         return next;
 967 }
 968
 969 static void predefined_sizeof(const char *name, unsigned bits)
 970 {
 971         add_pre_buffer("#weak_define __SIZEOF_%s__ %d\n", name, bits/8);
 972 }
 973
 974 static void predefined_max(const char *name, const char *suffix, unsigned bits)
 975 {
 976         unsigned long long max = (1ULL << (bits - 1 )) - 1;
 977
 978         add_pre_buffer("#weak_define __%s_MAX__ %#llx%s\n", name, max, suffix);
 979 }
 980
 981 static void predefined_type_size(const char *name, const char *suffix, unsigned bits)
 982 {
 983         predefined_max(name, suffix, bits);
 984         predefined_sizeof(name, bits);
 985 }
 986
 987 static void predefined_macros(void)
 988 {
 989         add_pre_buffer("#define __CHECKER__ 1\n");
 990
 991         predefined_sizeof("SHORT", bits_in_short);
 992         predefined_max("SHRT", "", bits_in_short);
 993         predefined_max("SCHAR", "", bits_in_char);
 994         predefined_max("WCHAR", "", bits_in_wchar);
 995         add_pre_buffer("#weak_define __CHAR_BIT__ %d\n", bits_in_char);
 996
 997         predefined_type_size("INT", "", bits_in_int);
 998         predefined_type_size("LONG", "L", bits_in_long);
 999         predefined_type_size("LONG_LONG", "LL", bits_in_longlong);
1000
1001         predefined_sizeof("INT128", 128);
1002
1003         predefined_sizeof("SIZE_T", bits_in_pointer);
1004         predefined_sizeof("PTRDIFF_T", bits_in_pointer);
1005         predefined_sizeof("POINTER", bits_in_pointer);
1006
1007         predefined_sizeof("FLOAT", bits_in_float);
1008         predefined_sizeof("DOUBLE", bits_in_double);
1009         predefined_sizeof("LONG_DOUBLE", bits_in_longdouble);
1010
1011         add_pre_buffer("#weak_define __%s_ENDIAN__ 1\n",
1012                 arch_big_endian ? "BIG" : "LITTLE");
1013
1014         add_pre_buffer("#weak_define __ORDER_LITTLE_ENDIAN__ 1234\n");
1015         add_pre_buffer("#weak_define __ORDER_BIG_ENDIAN__ 4321\n");
1016         add_pre_buffer("#weak_define __ORDER_PDP_ENDIAN__ 3412\n");
1017         add_pre_buffer("#weak_define __BYTE_ORDER__ __ORDER_%s_ENDIAN__\n",
1018                 arch_big_endian ? "BIG" : "LITTLE");
1019 }
1020
1021 void declare_builtin_functions(void)
1022 {
1023         /* Gaah. gcc knows tons of builtin <string.h> functions */
1024         add_pre_buffer("extern void *__builtin_memchr(const void *, int, __SIZE_TYPE__);\n");
1025         add_pre_buffer("extern void *__builtin_memcpy(void *, const void *, __SIZE_TYPE__);\n");
1026         add_pre_buffer("extern void *__builtin_mempcpy(void *, const void *, __SIZE_TYPE__);\n");
1027         add_pre_buffer("extern void *__builtin_memmove(void *, const void *, __SIZE_TYPE__);\n");
1028         add_pre_buffer("extern void *__builtin_memset(void *, int, __SIZE_TYPE__);\n");
1029         add_pre_buffer("extern int __builtin_memcmp(const void *, const void *, __SIZE_TYPE__);\n");
1030         add_pre_buffer("extern char *__builtin_strcat(char *, const char *);\n");
1031         add_pre_buffer("extern char *__builtin_strncat(char *, const char *, __SIZE_TYPE__);\n");
1032         add_pre_buffer("extern int __builtin_strcmp(const char *, const char *);\n");
1033         add_pre_buffer("extern int __builtin_strncmp(const char *, const char *, __SIZE_TYPE__);\n");
1034         add_pre_buffer("extern int __builtin_strcasecmp(const char *, const char *);\n");
1035         add_pre_buffer("extern int __builtin_strncasecmp(const char *, const char *, __SIZE_TYPE__);\n");
1036         add_pre_buffer("extern char *__builtin_strchr(const char *, int);\n");
1037         add_pre_buffer("extern char *__builtin_strrchr(const char *, int);\n");
1038         add_pre_buffer("extern char *__builtin_strcpy(char *, const char *);\n");
1039         add_pre_buffer("extern char *__builtin_strncpy(char *, const char *, __SIZE_TYPE__);\n");
1040         add_pre_buffer("extern char *__builtin_strdup(const char *);\n");
1041         add_pre_buffer("extern char *__builtin_strndup(const char *, __SIZE_TYPE__);\n");
1042         add_pre_buffer("extern __SIZE_TYPE__ __builtin_strspn(const char *, const char *);\n");
1043         add_pre_buffer("extern __SIZE_TYPE__ __builtin_strcspn(const char *, const char *);\n");
1044         add_pre_buffer("extern char * __builtin_strpbrk(const char *, const char *);\n");
1045         add_pre_buffer("extern char* __builtin_stpcpy(const char *, const char*);\n");
1046         add_pre_buffer("extern char* __builtin_stpncpy(const char *, const char*, __SIZE_TYPE__);\n");
1047         add_pre_buffer("extern __SIZE_TYPE__ __builtin_strlen(const char *);\n");
1048         add_pre_buffer("extern char *__builtin_strstr(const char *, const char *);\n");
1049         add_pre_buffer("extern char *__builtin_strcasestr(const char *, const char *);\n");
1050         add_pre_buffer("extern char *__builtin_strnstr(const char *, const char *, __SIZE_TYPE__);\n");
1051
1052         /* And even some from <strings.h> */
1053         add_pre_buffer("extern int  __builtin_bcmp(const void *, const void *, __SIZE_TYPE__);\n");
1054         add_pre_buffer("extern void __builtin_bcopy(const void *, void *, __SIZE_TYPE__);\n");
1055         add_pre_buffer("extern void __builtin_bzero(void *, __SIZE_TYPE__);\n");
1056         add_pre_buffer("extern char*__builtin_index(const char *, int);\n");
1057         add_pre_buffer("extern char*__builtin_rindex(const char *, int);\n");
1058
1059         /* And bitwise operations.. */
1060         add_pre_buffer("extern int __builtin_clrsb(int);\n");
1061         add_pre_buffer("extern int __builtin_clrsbl(long);\n");
1062         add_pre_buffer("extern int __builtin_clrsbll(long long);\n");
1063         add_pre_buffer("extern int __builtin_clz(int);\n");
1064         add_pre_buffer("extern int __builtin_clzl(long);\n");
1065         add_pre_buffer("extern int __builtin_clzll(long long);\n");
1066         add_pre_buffer("extern int __builtin_ctz(int);\n");
1067         add_pre_buffer("extern int __builtin_ctzl(long);\n");
1068         add_pre_buffer("extern int __builtin_ctzll(long long);\n");
1069         add_pre_buffer("extern int __builtin_ffs(int);\n");
1070         add_pre_buffer("extern int __builtin_ffsl(long);\n");
1071         add_pre_buffer("extern int __builtin_ffsll(long long);\n");
1072         add_pre_buffer("extern int __builtin_parity(unsigned int);\n");
1073         add_pre_buffer("extern int __builtin_parityl(unsigned long);\n");
1074         add_pre_buffer("extern int __builtin_parityll(unsigned long long);\n");
1075         add_pre_buffer("extern int __builtin_popcount(unsigned int);\n");
1076         add_pre_buffer("extern int __builtin_popcountl(unsigned long);\n");
1077         add_pre_buffer("extern int __builtin_popcountll(unsigned long long);\n");
1078
1079         /* And byte swaps.. */
1080         add_pre_buffer("extern unsigned short __builtin_bswap16(unsigned short);\n");
1081         add_pre_buffer("extern unsigned int __builtin_bswap32(unsigned int);\n");
1082         add_pre_buffer("extern unsigned long long __builtin_bswap64(unsigned long long);\n");
1083
1084         /* And atomic memory access functions.. */
1085         add_pre_buffer("extern int __sync_fetch_and_add(void *, ...);\n");
1086         add_pre_buffer("extern int __sync_fetch_and_sub(void *, ...);\n");
1087         add_pre_buffer("extern int __sync_fetch_and_or(void *, ...);\n");
1088         add_pre_buffer("extern int __sync_fetch_and_and(void *, ...);\n");
1089         add_pre_buffer("extern int __sync_fetch_and_xor(void *, ...);\n");
1090         add_pre_buffer("extern int __sync_fetch_and_nand(void *, ...);\n");
1091         add_pre_buffer("extern int __sync_add_and_fetch(void *, ...);\n");
1092         add_pre_buffer("extern int __sync_sub_and_fetch(void *, ...);\n");
1093         add_pre_buffer("extern int __sync_or_and_fetch(void *, ...);\n");
1094         add_pre_buffer("extern int __sync_and_and_fetch(void *, ...);\n");
1095         add_pre_buffer("extern int __sync_xor_and_fetch(void *, ...);\n");
1096         add_pre_buffer("extern int __sync_nand_and_fetch(void *, ...);\n");
1097         add_pre_buffer("extern int __sync_bool_compare_and_swap(void *, ...);\n");
1098         add_pre_buffer("extern int __sync_val_compare_and_swap(void *, ...);\n");
1099         add_pre_buffer("extern void __sync_synchronize();\n");
1100         add_pre_buffer("extern int __sync_lock_test_and_set(void *, ...);\n");
1101         add_pre_buffer("extern void __sync_lock_release(void *, ...);\n");
1102
1103         /* And some random ones.. */
1104         add_pre_buffer("extern void *__builtin_return_address(unsigned int);\n");
1105         add_pre_buffer("extern void *__builtin_extract_return_addr(void *);\n");
1106         add_pre_buffer("extern void *__builtin_frame_address(unsigned int);\n");
1107         add_pre_buffer("extern void __builtin_trap(void);\n");
1108         add_pre_buffer("extern void *__builtin_alloca(__SIZE_TYPE__);\n");
1109         add_pre_buffer("extern void __builtin_prefetch (const void *, ...);\n");
1110         add_pre_buffer("extern long __builtin_alpha_extbl(long, long);\n");
1111         add_pre_buffer("extern long __builtin_alpha_extwl(long, long);\n");
1112         add_pre_buffer("extern long __builtin_alpha_insbl(long, long);\n");
1113         add_pre_buffer("extern long __builtin_alpha_inswl(long, long);\n");
1114         add_pre_buffer("extern long __builtin_alpha_insql(long, long);\n");
1115         add_pre_buffer("extern long __builtin_alpha_inslh(long, long);\n");
1116         add_pre_buffer("extern long __builtin_alpha_cmpbge(long, long);\n");
1117         add_pre_buffer("extern int  __builtin_abs(int);\n");
1118         add_pre_buffer("extern long __builtin_labs(long);\n");
1119         add_pre_buffer("extern long long __builtin_llabs(long long);\n");
1120         add_pre_buffer("extern double __builtin_fabs(double);\n");
1121         add_pre_buffer("extern __SIZE_TYPE__ __builtin_va_arg_pack_len(void);\n");
1122
1123         /* Add Blackfin-specific stuff */
1124         add_pre_buffer(
1125                 "#ifdef __bfin__\n"
1126                 "extern void __builtin_bfin_csync(void);\n"
1127                 "extern void __builtin_bfin_ssync(void);\n"
1128                 "extern int __builtin_bfin_norm_fr1x32(int);\n"
1129                 "#endif\n"
1130         );
1131
1132         /* And some floating point stuff.. */
1133         add_pre_buffer("extern int __builtin_isgreater(float, float);\n");
1134         add_pre_buffer("extern int __builtin_isgreaterequal(float, float);\n");
1135         add_pre_buffer("extern int __builtin_isless(float, float);\n");
1136         add_pre_buffer("extern int __builtin_islessequal(float, float);\n");
1137         add_pre_buffer("extern int __builtin_islessgreater(float, float);\n");
1138         add_pre_buffer("extern int __builtin_isunordered(float, float);\n");
1139
1140         /* And some INFINITY / NAN stuff.. */
1141         add_pre_buffer("extern double __builtin_huge_val(void);\n");
1142         add_pre_buffer("extern float __builtin_huge_valf(void);\n");
1143         add_pre_buffer("extern long double __builtin_huge_vall(void);\n");
1144         add_pre_buffer("extern double __builtin_inf(void);\n");
1145         add_pre_buffer("extern float __builtin_inff(void);\n");
1146         add_pre_buffer("extern long double __builtin_infl(void);\n");
1147         add_pre_buffer("extern double __builtin_nan(const char *);\n");
1148         add_pre_buffer("extern float __builtin_nanf(const char *);\n");
1149         add_pre_buffer("extern long double __builtin_nanl(const char *);\n");
1150         add_pre_buffer("extern int __builtin_isinf_sign(float);\n");
1151         add_pre_buffer("extern int __builtin_isfinite(float);\n");
1152         add_pre_buffer("extern int __builtin_isnan(float);\n");
1153
1154         /* And some __FORTIFY_SOURCE ones.. */
1155         add_pre_buffer ("extern __SIZE_TYPE__ __builtin_object_size(const void *, int);\n");
1156         add_pre_buffer ("extern void * __builtin___memcpy_chk(void *, const void *, __SIZE_TYPE__, __SIZE_TYPE__);\n");
1157         add_pre_buffer ("extern void * __builtin___memmove_chk(void *, const void *, __SIZE_TYPE__, __SIZE_TYPE__);\n");
1158         add_pre_buffer ("extern void * __builtin___mempcpy_chk(void *, const void *, __SIZE_TYPE__, __SIZE_TYPE__);\n");
1159         add_pre_buffer ("extern void * __builtin___memset_chk(void *, int, __SIZE_TYPE__, __SIZE_TYPE__);\n");
1160         add_pre_buffer ("extern int __builtin___sprintf_chk(char *, int, __SIZE_TYPE__, const char *, ...);\n");
1161         add_pre_buffer ("extern int __builtin___snprintf_chk(char *, __SIZE_TYPE__, int , __SIZE_TYPE__, const char *, ...);\n");
1162         add_pre_buffer ("extern char * __builtin___stpcpy_chk(char *, const char *, __SIZE_TYPE__);\n");
1163         add_pre_buffer ("extern char * __builtin___strcat_chk(char *, const char *, __SIZE_TYPE__);\n");
1164         add_pre_buffer ("extern char * __builtin___strcpy_chk(char *, const char *, __SIZE_TYPE__);\n");
1165         add_pre_buffer ("extern char * __builtin___strncat_chk(char *, const char *, __SIZE_TYPE__, __SIZE_TYPE__);\n");
1166         add_pre_buffer ("extern char * __builtin___strncpy_chk(char *, const char *, __SIZE_TYPE__, __SIZE_TYPE__);\n");
1167         add_pre_buffer ("extern int __builtin___vsprintf_chk(char *, int, __SIZE_TYPE__, const char *, __builtin_va_list);\n");
1168         add_pre_buffer ("extern int __builtin___vsnprintf_chk(char *, __SIZE_TYPE__, int, __SIZE_TYPE__, const char *, __builtin_va_list ap);\n");
1169         add_pre_buffer ("extern void __builtin_unreachable(void);\n");
1170
1171         /* And some from <stdlib.h> */
1172         add_pre_buffer("extern void __builtin_abort(void);\n");
1173         add_pre_buffer("extern void *__builtin_calloc(__SIZE_TYPE__, __SIZE_TYPE__);\n");
1174         add_pre_buffer("extern void __builtin_exit(int);\n");
1175         add_pre_buffer("extern void *__builtin_malloc(__SIZE_TYPE__);\n");
1176         add_pre_buffer("extern void *__builtin_realloc(void *, __SIZE_TYPE__);\n");
1177         add_pre_buffer("extern void __builtin_free(void *);\n");
1178
1179         /* And some from <stdio.h> */
1180         add_pre_buffer("extern int __builtin_printf(const char *, ...);\n");
1181         add_pre_buffer("extern int __builtin_sprintf(char *, const char *, ...);\n");
1182         add_pre_buffer("extern int __builtin_snprintf(char *, __SIZE_TYPE__, const char *, ...);\n");
1183         add_pre_buffer("extern int __builtin_puts(const char *);\n");
1184         add_pre_buffer("extern int __builtin_vprintf(const char *, __builtin_va_list);\n");
1185         add_pre_buffer("extern int __builtin_vsprintf(char *, const char *, __builtin_va_list);\n");
1186         add_pre_buffer("extern int __builtin_vsnprintf(char *, __SIZE_TYPE__, const char *, __builtin_va_list ap);\n");
1187 }
1188
1189 void create_builtin_stream(void)
1190 {
1191         add_pre_buffer("#weak_define __GNUC__ %d\n", gcc_major);
1192         add_pre_buffer("#weak_define __GNUC_MINOR__ %d\n", gcc_minor);
1193         add_pre_buffer("#weak_define __GNUC_PATCHLEVEL__ %d\n", gcc_patchlevel);
1194
1195         /* add the multiarch include directories, if any */
1196         if (multiarch_dir && *multiarch_dir) {
1197                 add_pre_buffer("#add_system \"/usr/include/%s\"\n", multiarch_dir);
1198                 add_pre_buffer("#add_system \"/usr/local/include/%s\"\n", multiarch_dir);
1199         }
1200
1201         /* We add compiler headers path here because we have to parse
1202          * the arguments to get it, falling back to default. */
1203         add_pre_buffer("#add_system \"%s/include\"\n", gcc_base_dir);
1204         add_pre_buffer("#add_system \"%s/include-fixed\"\n", gcc_base_dir);
1205
1206         add_pre_buffer("#define __extension__\n");
1207         add_pre_buffer("#define __pragma__\n");
1208         add_pre_buffer("#define _Pragma(x)\n");
1209
1210         // gcc defines __SIZE_TYPE__ to be size_t.  For linux/i86 and
1211         // solaris/sparc that is really "unsigned int" and for linux/x86_64
1212         // it is "long unsigned int".  In either case we can probably
1213         // get away with this.  We need the #weak_define as cgcc will define
1214         // the right __SIZE_TYPE__.
1215         if (size_t_ctype == &ulong_ctype)
1216                 add_pre_buffer("#weak_define __SIZE_TYPE__ long unsigned int\n");
1217         else
1218                 add_pre_buffer("#weak_define __SIZE_TYPE__ unsigned int\n");
1219         add_pre_buffer("#weak_define __STDC__ 1\n");
1220
1221         switch (standard)
1222         {
1223                 case STANDARD_C89:
1224                         add_pre_buffer("#weak_define __STRICT_ANSI__\n");
1225                         break;
1226
1227                 case STANDARD_C94:
1228                         add_pre_buffer("#weak_define __STDC_VERSION__ 199409L\n");
1229                         add_pre_buffer("#weak_define __STRICT_ANSI__\n");
1230                         break;
1231
1232                 case STANDARD_C99:
1233                         add_pre_buffer("#weak_define __STDC_VERSION__ 199901L\n");
1234                         add_pre_buffer("#weak_define __STRICT_ANSI__\n");
1235                         break;
1236
1237                 case STANDARD_GNU89:
1238                         break;
1239
1240                 case STANDARD_GNU99:
1241                         add_pre_buffer("#weak_define __STDC_VERSION__ 199901L\n");
1242                         break;
1243
1244                 case STANDARD_C11:
1245                         add_pre_buffer("#weak_define __STRICT_ANSI__ 1\n");
1246                 case STANDARD_GNU11:
1247                         add_pre_buffer("#weak_define __STDC_NO_ATOMICS__ 1\n");
1248                         add_pre_buffer("#weak_define __STDC_NO_COMPLEX__ 1\n");
1249                         add_pre_buffer("#weak_define __STDC_NO_THREADS__ 1\n");
1250                         add_pre_buffer("#weak_define __STDC_VERSION__ 201112L\n");
1251                         break;
1252
1253                 default:
1254                         assert (0);
1255         }
1256
1257         add_pre_buffer("#define __builtin_stdarg_start(a,b) ((a) = (__builtin_va_list)(&(b)))\n");
1258         add_pre_buffer("#define __builtin_va_start(a,b) ((a) = (__builtin_va_list)(&(b)))\n");
1259         add_pre_buffer("#define __builtin_ms_va_start(a,b) ((a) = (__builtin_ms_va_list)(&(b)))\n");
1260         add_pre_buffer("#define __builtin_va_arg(arg,type)  ({ type __va_arg_ret = *(type *)(arg); arg += sizeof(type); __va_arg_ret; })\n");
1261         add_pre_buffer("#define __builtin_va_alist (*(void *)0)\n");
1262         add_pre_buffer("#define __builtin_va_arg_incr(x) ((x) + 1)\n");
1263         add_pre_buffer("#define __builtin_va_copy(dest, src) ({ dest = src; (void)0; })\n");
1264         add_pre_buffer("#define __builtin_ms_va_copy(dest, src) ({ dest = src; (void)0; })\n");
1265         add_pre_buffer("#define __builtin_va_end(arg)\n");
1266         add_pre_buffer("#define __builtin_ms_va_end(arg)\n");
1267         add_pre_buffer("#define __builtin_va_arg_pack()\n");
1268
1269         /* FIXME! We need to do these as special magic macros at expansion time! */
1270         add_pre_buffer("#define __BASE_FILE__ \"base_file.c\"\n");
1271
1272         if (optimize)
1273                 add_pre_buffer("#define __OPTIMIZE__ 1\n");
1274         if (optimize_size)
1275                 add_pre_buffer("#define __OPTIMIZE_SIZE__ 1\n");
1276 }
1277
1278 static struct symbol_list *sparse_tokenstream(struct token *token)
1279 {
1280         int builtin = token && !token->pos.stream;
1281
1282         // Preprocess the stream
1283         token = preprocess(token);
1284
1285         if (dump_macro_defs && !builtin)
1286                 dump_macro_definitions();
1287
1288         if (preprocess_only) {
1289                 while (!eof_token(token)) {
1290                         int prec = 1;
1291                         struct token *next = token->next;
1292                         const char *separator = "";
1293                         if (next->pos.whitespace)
1294                                 separator = " ";
1295                         if (next->pos.newline) {
1296                                 separator = "\n\t\t\t\t\t";
1297                                 prec = next->pos.pos;
1298                                 if (prec > 4)
1299                                         prec = 4;
1300                         }
1301                         printf("%s%.*s", show_token(token), prec, separator);
1302                         token = next;
1303                 }
1304                 putchar('\n');
1305
1306                 return NULL;
1307         }
1308
1309         // Parse the resulting C code
1310         while (!eof_token(token))
1311                 token = external_declaration(token, &translation_unit_used_list, NULL);
1312         return translation_unit_used_list;
1313 }
1314
1315 static struct symbol_list *sparse_file(const char *filename)
1316 {
1317         int fd;
1318         struct token *token;
1319
1320         if (strcmp (filename, "-") == 0) {
1321                 fd = 0;
1322         } else {
1323                 fd = open(filename, O_RDONLY);
1324                 if (fd < 0)
1325                         die("No such file: %s", filename);
1326         }
1327
1328         // Tokenize the input stream
1329         token = tokenize(filename, fd, NULL, includepath);
1330         store_all_tokens(token);
1331         close(fd);
1332
1333         return sparse_tokenstream(token);
1334 }
1335
1336 /*
1337  * This handles the "-include" directive etc: we're in global
1338  * scope, and all types/macros etc will affect all the following
1339  * files.
1340  *
1341  * NOTE NOTE NOTE! "#undef" of anything in this stage will
1342  * affect all subsequent files too, i.e. we can have non-local
1343  * behaviour between files!
1344  */
1345 static struct symbol_list *sparse_initial(void)
1346 {
1347         int i;
1348
1349         // Prepend any "include" file to the stream.
1350         // We're in global scope, it will affect all files!
1351         for (i = 0; i < cmdline_include_nr; i++)
1352                 add_pre_buffer("#argv_include \"%s\"\n", cmdline_include[i]);
1353
1354         return sparse_tokenstream(pre_buffer_begin);
1355 }
1356
1357 struct symbol_list *sparse_initialize(int argc, char **argv, struct string_list **filelist)
1358 {
1359         char **args;
1360         struct symbol_list *list;
1361
1362         // Initialize symbol stream first, so that we can add defines etc
1363         init_symbols();
1364         init_include_path();
1365
1366         args = argv;
1367         for (;;) {
1368                 char *arg = *++args;
1369                 if (!arg)
1370                         break;
1371
1372                 if (arg[0] == '-' && arg[1]) {
1373                         args = handle_switch(arg+1, args);
1374                         continue;
1375                 }
1376                 add_ptr_list_notag(filelist, arg);
1377         }
1378         handle_switch_W_finalize();
1379         handle_switch_v_finalize();
1380
1381         handle_arch_finalize();
1382
1383         list = NULL;
1384         if (!ptr_list_empty(filelist)) {
1385                 // Initialize type system
1386                 init_ctype();
1387                 handle_funsigned_char();
1388
1389                 create_builtin_stream();
1390                 predefined_macros();
1391                 if (!preprocess_only)
1392                         declare_builtin_functions();
1393
1394                 list = sparse_initial();
1395
1396                 /*
1397                  * Protect the initial token allocations, since
1398                  * they need to survive all the others
1399                  */
1400                 protect_token_alloc();
1401         }
1402         /*
1403          * Evaluate the complete symbol list
1404          * Note: This is not needed for normal cases.
1405          *       These symbols should only be predefined defines and
1406          *       declaratons which will be evaluated later, when needed.
1407          *       This is also the case when a file is directly included via
1408          *       '-include <file>' on the command line *AND* the file only
1409          *       contains defines, declarations and inline definitions.
1410          *       However, in the rare cases where the given file should
1411          *       contain some definitions, these will never be evaluated
1412          *       and thus won't be able to be linearized correctly.
1413          *       Hence the evaluate_symbol_list() here under.
1414          */
1415         evaluate_symbol_list(list);
1416         return list;
1417 }
1418
1419 struct symbol_list * sparse_keep_tokens(char *filename)
1420 {
1421         struct symbol_list *res;
1422
1423         /* Clear previous symbol list */
1424         translation_unit_used_list = NULL;
1425
1426         new_file_scope();
1427         res = sparse_file(filename);
1428
1429         /* And return it */
1430         return res;
1431 }
1432
1433
1434 struct symbol_list * __sparse(char *filename)
1435 {
1436         struct symbol_list *res;
1437
1438         res = sparse_keep_tokens(filename);
1439
1440         /* Drop the tokens for this file after parsing */
1441         clear_token_alloc();
1442
1443         /* And return it */
1444         return res;
1445 }
1446
1447 struct symbol_list * sparse(char *filename)
1448 {
1449         struct symbol_list *res = __sparse(filename);
1450
1451         if (has_error & ERROR_CURR_PHASE)
1452                 has_error = ERROR_PREV_PHASE;
1453         /* Evaluate the complete symbol list */
1454         evaluate_symbol_list(res);
1455
1456         return res;
1457 }