1 /* Get common system includes and various definitions and declarations based 2 on autoconf macros. 3 Copyright (C) 1998-2013 Free Software Foundation, Inc. 4 5 This file is part of GCC. 6 7 GCC is free software; you can redistribute it and/or modify it under 8 the terms of the GNU General Public License as published by the Free 9 Software Foundation; either version 3, or (at your option) any later 10 version. 11 12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY 13 WARRANTY; without even the implied warranty of MERCHANTABILITY or 14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 15 for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with GCC; see the file COPYING3. If not see 19 <http://www.gnu.org/licenses/>. */ 20 21 22 #ifndef GCC_SYSTEM_H 23 #define GCC_SYSTEM_H 24 25 /* We must include stdarg.h before stdio.h. */ 26 #include <stdarg.h> 27 28 #ifndef va_copy 29 # ifdef __va_copy 30 # define va_copy(d,s) __va_copy((d),(s)) 31 # else 32 # define va_copy(d,s) ((d) = (s)) 33 # endif 34 #endif 35 36 #ifdef HAVE_STDDEF_H 37 # include <stddef.h> 38 #endif 39 40 #ifndef GENERATOR_FILE 41 #ifdef __cplusplus 42 # include <cstdio> 43 #endif 44 #endif 45 46 #include <stdio.h> 47 48 /* Define a generic NULL if one hasn't already been defined. */ 49 #ifndef NULL 50 #define NULL 0 51 #endif 52 53 /* Use the unlocked open routines from libiberty. */ 54 55 /* Some of these are #define on some systems, e.g. on AIX to redirect 56 the names to 64bit capable functions for LARGE_FILES support. These 57 redefs are pointless here so we can override them. */ 58 59 #undef fopen 60 #undef freopen 61 62 #define fopen(PATH,MODE) fopen_unlocked(PATH,MODE) 63 #define fdopen(FILDES,MODE) fdopen_unlocked(FILDES,MODE) 64 #define freopen(PATH,MODE,STREAM) freopen_unlocked(PATH,MODE,STREAM) 65 66 /* The compiler is not a multi-threaded application and therefore we 67 do not have to use the locking functions. In fact, using the locking 68 functions can cause the compiler to be significantly slower under 69 I/O bound conditions (such as -g -O0 on very large source files). 70 71 HAVE_DECL_PUTC_UNLOCKED actually indicates whether or not the stdio 72 code is multi-thread safe by default. If it is set to 0, then do 73 not worry about using the _unlocked functions. 74 75 fputs_unlocked, fwrite_unlocked, and fprintf_unlocked are 76 extensions and need to be prototyped by hand (since we do not 77 define _GNU_SOURCE). */ 78 79 #if defined HAVE_DECL_PUTC_UNLOCKED && HAVE_DECL_PUTC_UNLOCKED 80 81 # ifdef HAVE_PUTC_UNLOCKED 82 # undef putc 83 # define putc(C, Stream) putc_unlocked (C, Stream) 84 # endif 85 # ifdef HAVE_PUTCHAR_UNLOCKED 86 # undef putchar 87 # define putchar(C) putchar_unlocked (C) 88 # endif 89 # ifdef HAVE_GETC_UNLOCKED 90 # undef getc 91 # define getc(Stream) getc_unlocked (Stream) 92 # endif 93 # ifdef HAVE_GETCHAR_UNLOCKED 94 # undef getchar 95 # define getchar() getchar_unlocked () 96 # endif 97 # ifdef HAVE_FPUTC_UNLOCKED 98 # undef fputc 99 # define fputc(C, Stream) fputc_unlocked (C, Stream) 100 # endif 101 102 #ifdef __cplusplus 103 extern "C" { 104 #endif 105 106 # ifdef HAVE_CLEARERR_UNLOCKED 107 # undef clearerr 108 # define clearerr(Stream) clearerr_unlocked (Stream) 109 # if defined (HAVE_DECL_CLEARERR_UNLOCKED) && !HAVE_DECL_CLEARERR_UNLOCKED 110 extern void clearerr_unlocked (FILE *); 111 # endif 112 # endif 113 # ifdef HAVE_FEOF_UNLOCKED 114 # undef feof 115 # define feof(Stream) feof_unlocked (Stream) 116 # if defined (HAVE_DECL_FEOF_UNLOCKED) && !HAVE_DECL_FEOF_UNLOCKED 117 extern int feof_unlocked (FILE *); 118 # endif 119 # endif 120 # ifdef HAVE_FILENO_UNLOCKED 121 # undef fileno 122 # define fileno(Stream) fileno_unlocked (Stream) 123 # if defined (HAVE_DECL_FILENO_UNLOCKED) && !HAVE_DECL_FILENO_UNLOCKED 124 extern int fileno_unlocked (FILE *); 125 # endif 126 # endif 127 # ifdef HAVE_FFLUSH_UNLOCKED 128 # undef fflush 129 # define fflush(Stream) fflush_unlocked (Stream) 130 # if defined (HAVE_DECL_FFLUSH_UNLOCKED) && !HAVE_DECL_FFLUSH_UNLOCKED 131 extern int fflush_unlocked (FILE *); 132 # endif 133 # endif 134 # ifdef HAVE_FGETC_UNLOCKED 135 # undef fgetc 136 # define fgetc(Stream) fgetc_unlocked (Stream) 137 # if defined (HAVE_DECL_FGETC_UNLOCKED) && !HAVE_DECL_FGETC_UNLOCKED 138 extern int fgetc_unlocked (FILE *); 139 # endif 140 # endif 141 # ifdef HAVE_FGETS_UNLOCKED 142 # undef fgets 143 # define fgets(S, n, Stream) fgets_unlocked (S, n, Stream) 144 # if defined (HAVE_DECL_FGETS_UNLOCKED) && !HAVE_DECL_FGETS_UNLOCKED 145 extern char *fgets_unlocked (char *, int, FILE *); 146 # endif 147 # endif 148 # ifdef HAVE_FPUTS_UNLOCKED 149 # undef fputs 150 # define fputs(String, Stream) fputs_unlocked (String, Stream) 151 # if defined (HAVE_DECL_FPUTS_UNLOCKED) && !HAVE_DECL_FPUTS_UNLOCKED 152 extern int fputs_unlocked (const char *, FILE *); 153 # endif 154 # endif 155 # ifdef HAVE_FERROR_UNLOCKED 156 # undef ferror 157 # define ferror(Stream) ferror_unlocked (Stream) 158 # if defined (HAVE_DECL_FERROR_UNLOCKED) && !HAVE_DECL_FERROR_UNLOCKED 159 extern int ferror_unlocked (FILE *); 160 # endif 161 # endif 162 # ifdef HAVE_FREAD_UNLOCKED 163 # undef fread 164 # define fread(Ptr, Size, N, Stream) fread_unlocked (Ptr, Size, N, Stream) 165 # if defined (HAVE_DECL_FREAD_UNLOCKED) && !HAVE_DECL_FREAD_UNLOCKED 166 extern size_t fread_unlocked (void *, size_t, size_t, FILE *); 167 # endif 168 # endif 169 # ifdef HAVE_FWRITE_UNLOCKED 170 # undef fwrite 171 # define fwrite(Ptr, Size, N, Stream) fwrite_unlocked (Ptr, Size, N, Stream) 172 # if defined (HAVE_DECL_FWRITE_UNLOCKED) && !HAVE_DECL_FWRITE_UNLOCKED 173 extern size_t fwrite_unlocked (const void *, size_t, size_t, FILE *); 174 # endif 175 # endif 176 # ifdef HAVE_FPRINTF_UNLOCKED 177 # undef fprintf 178 /* We can't use a function-like macro here because we don't know if 179 we have varargs macros. */ 180 # define fprintf fprintf_unlocked 181 # if defined (HAVE_DECL_FPRINTF_UNLOCKED) && !HAVE_DECL_FPRINTF_UNLOCKED 182 extern int fprintf_unlocked (FILE *, const char *, ...); 183 # endif 184 # endif 185 186 #ifdef __cplusplus 187 } 188 #endif 189 190 #endif 191 192 /* ??? Glibc's fwrite/fread_unlocked macros cause 193 "warning: signed and unsigned type in conditional expression". */ 194 #undef fread_unlocked 195 #undef fwrite_unlocked 196 197 /* There are an extraordinary number of issues with <ctype.h>. 198 The last straw is that it varies with the locale. Use libiberty's 199 replacement instead. */ 200 #include "safe-ctype.h" 201 202 #include <sys/types.h> 203 204 #include <errno.h> 205 206 #if !defined (errno) && defined (HAVE_DECL_ERRNO) && !HAVE_DECL_ERRNO 207 extern int errno; 208 #endif 209 210 #ifndef GENERATOR_FILE 211 #ifdef __cplusplus 212 # include <cstring> 213 #endif 214 #endif 215 216 /* Some of glibc's string inlines cause warnings. Plus we'd rather 217 rely on (and therefore test) GCC's string builtins. */ 218 #define __NO_STRING_INLINES 219 220 #ifdef STRING_WITH_STRINGS 221 # include <string.h> 222 # include <strings.h> 223 #else 224 # ifdef HAVE_STRING_H 225 # include <string.h> 226 # else 227 # ifdef HAVE_STRINGS_H 228 # include <strings.h> 229 # endif 230 # endif 231 #endif 232 233 #ifdef HAVE_STDLIB_H 234 # include <stdlib.h> 235 #endif 236 237 /* Undef vec_free from AIX stdlib.h header which conflicts with vec.h. */ 238 #undef vec_free 239 240 /* If we don't have an overriding definition, set SUCCESS_EXIT_CODE and 241 FATAL_EXIT_CODE to EXIT_SUCCESS and EXIT_FAILURE respectively, 242 or 0 and 1 if those macros are not defined. */ 243 #ifndef SUCCESS_EXIT_CODE 244 # ifdef EXIT_SUCCESS 245 # define SUCCESS_EXIT_CODE EXIT_SUCCESS 246 # else 247 # define SUCCESS_EXIT_CODE 0 248 # endif 249 #endif 250 251 #ifndef FATAL_EXIT_CODE 252 # ifdef EXIT_FAILURE 253 # define FATAL_EXIT_CODE EXIT_FAILURE 254 # else 255 # define FATAL_EXIT_CODE 1 256 # endif 257 #endif 258 259 #define ICE_EXIT_CODE 4 260 261 #ifdef HAVE_UNISTD_H 262 # include <unistd.h> 263 #endif 264 265 #ifdef HAVE_SYS_PARAM_H 266 # include <sys/param.h> 267 /* We use this identifier later and it appears in some vendor param.h's. */ 268 # undef PREFETCH 269 #endif 270 271 #if HAVE_LIMITS_H 272 # include <limits.h> 273 #endif 274 275 /* Get definitions of HOST_WIDE_INT and HOST_WIDEST_INT. */ 276 #include "hwint.h" 277 278 /* A macro to determine whether a VALUE lies inclusively within a 279 certain range without evaluating the VALUE more than once. This 280 macro won't warn if the VALUE is unsigned and the LOWER bound is 281 zero, as it would e.g. with "VALUE >= 0 && ...". Note the LOWER 282 bound *is* evaluated twice, and LOWER must not be greater than 283 UPPER. However the bounds themselves can be either positive or 284 negative. */ 285 #define IN_RANGE(VALUE, LOWER, UPPER) \ 286 ((unsigned HOST_WIDE_INT) (VALUE) - (unsigned HOST_WIDE_INT) (LOWER) \ 287 <= (unsigned HOST_WIDE_INT) (UPPER) - (unsigned HOST_WIDE_INT) (LOWER)) 288 289 /* Infrastructure for defining missing _MAX and _MIN macros. Note that 290 macros defined with these cannot be used in #if. */ 291 292 /* The extra casts work around common compiler bugs. */ 293 #define INTTYPE_SIGNED(t) (! ((t) 0 < (t) -1)) 294 /* The outer cast is needed to work around a bug in Cray C 5.0.3.0. 295 It is necessary at least when t == time_t. */ 296 #define INTTYPE_MINIMUM(t) ((t) (INTTYPE_SIGNED (t) \ 297 ? ~ (t) 0 << (sizeof(t) * CHAR_BIT - 1) : (t) 0)) 298 #define INTTYPE_MAXIMUM(t) ((t) (~ (t) 0 - INTTYPE_MINIMUM (t))) 299 300 /* Use that infrastructure to provide a few constants. */ 301 #ifndef UCHAR_MAX 302 # define UCHAR_MAX INTTYPE_MAXIMUM (unsigned char) 303 #endif 304 305 #ifdef TIME_WITH_SYS_TIME 306 # include <sys/time.h> 307 # include <time.h> 308 #else 309 # if HAVE_SYS_TIME_H 310 # include <sys/time.h> 311 # else 312 # ifdef HAVE_TIME_H 313 # include <time.h> 314 # endif 315 # endif 316 #endif 317 318 #ifdef HAVE_FCNTL_H 319 # include <fcntl.h> 320 #else 321 # ifdef HAVE_SYS_FILE_H 322 # include <sys/file.h> 323 # endif 324 #endif 325 326 #ifndef SEEK_SET 327 # define SEEK_SET 0 328 # define SEEK_CUR 1 329 # define SEEK_END 2 330 #endif 331 #ifndef F_OK 332 # define F_OK 0 333 # define X_OK 1 334 # define W_OK 2 335 # define R_OK 4 336 #endif 337 #ifndef O_RDONLY 338 # define O_RDONLY 0 339 #endif 340 #ifndef O_WRONLY 341 # define O_WRONLY 1 342 #endif 343 #ifndef O_BINARY 344 # define O_BINARY 0 345 #endif 346 347 /* Some systems define these in, e.g., param.h. We undefine these names 348 here to avoid the warnings. We prefer to use our definitions since we 349 know they are correct. */ 350 351 #undef MIN 352 #undef MAX 353 #define MIN(X,Y) ((X) < (Y) ? (X) : (Y)) 354 #define MAX(X,Y) ((X) > (Y) ? (X) : (Y)) 355 356 /* Returns the least number N such that N * Y >= X. */ 357 #define CEIL(x,y) (((x) + (y) - 1) / (y)) 358 359 #ifdef HAVE_SYS_WAIT_H 360 #include <sys/wait.h> 361 #endif 362 363 #ifndef WIFSIGNALED 364 #define WIFSIGNALED(S) (((S) & 0xff) != 0 && ((S) & 0xff) != 0x7f) 365 #endif 366 #ifndef WTERMSIG 367 #define WTERMSIG(S) ((S) & 0x7f) 368 #endif 369 #ifndef WIFEXITED 370 #define WIFEXITED(S) (((S) & 0xff) == 0) 371 #endif 372 #ifndef WEXITSTATUS 373 #define WEXITSTATUS(S) (((S) & 0xff00) >> 8) 374 #endif 375 #ifndef WSTOPSIG 376 #define WSTOPSIG WEXITSTATUS 377 #endif 378 #ifndef WCOREDUMP 379 #define WCOREDUMP(S) ((S) & WCOREFLG) 380 #endif 381 #ifndef WCOREFLG 382 #define WCOREFLG 0200 383 #endif 384 385 #include <signal.h> 386 #if !defined (SIGCHLD) && defined (SIGCLD) 387 # define SIGCHLD SIGCLD 388 #endif 389 390 #ifdef HAVE_SYS_MMAN_H 391 # include <sys/mman.h> 392 #endif 393 394 #ifndef MAP_FAILED 395 # define MAP_FAILED ((void *)-1) 396 #endif 397 398 #if !defined (MAP_ANONYMOUS) && defined (MAP_ANON) 399 # define MAP_ANONYMOUS MAP_ANON 400 #endif 401 402 #ifdef HAVE_SYS_RESOURCE_H 403 # include <sys/resource.h> 404 #endif 405 406 #ifdef HAVE_SYS_TIMES_H 407 # include <sys/times.h> 408 #endif 409 410 /* The HAVE_DECL_* macros are three-state, undefined, 0 or 1. If they 411 are defined to 0 then we must provide the relevant declaration 412 here. These checks will be in the undefined state while configure 413 is running so be careful to test "defined (HAVE_DECL_*)". */ 414 415 #ifdef __cplusplus 416 extern "C" { 417 #endif 418 419 #if defined (HAVE_DECL_ATOF) && !HAVE_DECL_ATOF 420 extern double atof (const char *); 421 #endif 422 423 #if defined (HAVE_DECL_ATOL) && !HAVE_DECL_ATOL 424 extern long atol (const char *); 425 #endif 426 427 #if defined (HAVE_DECL_FREE) && !HAVE_DECL_FREE 428 extern void free (void *); 429 #endif 430 431 #if defined (HAVE_DECL_GETCWD) && !HAVE_DECL_GETCWD 432 extern char *getcwd (char *, size_t); 433 #endif 434 435 #if defined (HAVE_DECL_GETENV) && !HAVE_DECL_GETENV 436 extern char *getenv (const char *); 437 #endif 438 439 #if defined (HAVE_DECL_GETOPT) && !HAVE_DECL_GETOPT 440 extern int getopt (int, char * const *, const char *); 441 #endif 442 443 #if defined (HAVE_DECL_GETPAGESIZE) && !HAVE_DECL_GETPAGESIZE 444 extern int getpagesize (void); 445 #endif 446 447 #if defined (HAVE_DECL_GETWD) && !HAVE_DECL_GETWD 448 extern char *getwd (char *); 449 #endif 450 451 #if defined (HAVE_DECL_SBRK) && !HAVE_DECL_SBRK 452 extern void *sbrk (int); 453 #endif 454 455 #if defined (HAVE_DECL_STRSTR) && !HAVE_DECL_STRSTR 456 extern char *strstr (const char *, const char *); 457 #endif 458 459 #if defined (HAVE_DECL_STPCPY) && !HAVE_DECL_STPCPY 460 extern char *stpcpy (char *, const char *); 461 #endif 462 463 #ifdef __cplusplus 464 } 465 #endif 466 467 #ifdef HAVE_MALLOC_H 468 #include <malloc.h> 469 #endif 470 471 #ifdef __cplusplus 472 extern "C" { 473 #endif 474 475 #if defined (HAVE_DECL_MALLOC) && !HAVE_DECL_MALLOC 476 extern void *malloc (size_t); 477 #endif 478 479 #if defined (HAVE_DECL_CALLOC) && !HAVE_DECL_CALLOC 480 extern void *calloc (size_t, size_t); 481 #endif 482 483 #if defined (HAVE_DECL_REALLOC) && !HAVE_DECL_REALLOC 484 extern void *realloc (void *, size_t); 485 #endif 486 487 #ifdef __cplusplus 488 } 489 #endif 490 491 #ifdef HAVE_STDINT_H 492 #include <stdint.h> 493 #endif 494 495 #ifdef HAVE_INTTYPES_H 496 #include <inttypes.h> 497 #endif 498 499 #ifdef __cplusplus 500 extern "C" { 501 #endif 502 503 /* If the system doesn't provide strsignal, we get it defined in 504 libiberty but no declaration is supplied. */ 505 #if !defined (HAVE_STRSIGNAL) \ 506 || (defined (HAVE_DECL_STRSIGNAL) && !HAVE_DECL_STRSIGNAL) 507 # ifndef strsignal 508 extern const char *strsignal (int); 509 # endif 510 #endif 511 512 #ifdef HAVE_GETRLIMIT 513 # if defined (HAVE_DECL_GETRLIMIT) && !HAVE_DECL_GETRLIMIT 514 # ifndef getrlimit 515 struct rlimit; 516 extern int getrlimit (int, struct rlimit *); 517 # endif 518 # endif 519 #endif 520 521 #ifdef HAVE_SETRLIMIT 522 # if defined (HAVE_DECL_SETRLIMIT) && !HAVE_DECL_SETRLIMIT 523 # ifndef setrlimit 524 struct rlimit; 525 extern int setrlimit (int, const struct rlimit *); 526 # endif 527 # endif 528 #endif 529 530 #if defined (HAVE_DECL_ABORT) && !HAVE_DECL_ABORT 531 extern void abort (void); 532 #endif 533 534 #if defined (HAVE_DECL_SNPRINTF) && !HAVE_DECL_SNPRINTF 535 extern int snprintf (char *, size_t, const char *, ...); 536 #endif 537 538 #if defined (HAVE_DECL_VSNPRINTF) && !HAVE_DECL_VSNPRINTF 539 extern int vsnprintf(char *, size_t, const char *, va_list); 540 #endif 541 542 #ifdef __cplusplus 543 } 544 #endif 545 546 /* 1 if we have C99 designated initializers. */ 547 #if !defined(HAVE_DESIGNATED_INITIALIZERS) 548 #define HAVE_DESIGNATED_INITIALIZERS \ 549 (((GCC_VERSION >= 2007) || (__STDC_VERSION__ >= 199901L)) \ 550 && !defined(__cplusplus)) 551 #endif 552 553 #if !defined(HAVE_DESIGNATED_UNION_INITIALIZERS) 554 #define HAVE_DESIGNATED_UNION_INITIALIZERS \ 555 (((GCC_VERSION >= 2007) || (__STDC_VERSION__ >= 199901L)) \ 556 && (!defined(__cplusplus) || (GCC_VERSION >= 4007))) 557 #endif 558 559 #if HAVE_SYS_STAT_H 560 # include <sys/stat.h> 561 #endif 562 563 /* Test if something is a normal file. */ 564 #ifndef S_ISREG 565 #define S_ISREG(m) (((m) & S_IFMT) == S_IFREG) 566 #endif 567 568 /* Test if something is a directory. */ 569 #ifndef S_ISDIR 570 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR) 571 #endif 572 573 /* Test if something is a character special file. */ 574 #ifndef S_ISCHR 575 #define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR) 576 #endif 577 578 /* Test if something is a block special file. */ 579 #ifndef S_ISBLK 580 #define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK) 581 #endif 582 583 /* Test if something is a socket. */ 584 #ifndef S_ISSOCK 585 # ifdef S_IFSOCK 586 # define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK) 587 # else 588 # define S_ISSOCK(m) 0 589 # endif 590 #endif 591 592 /* Test if something is a FIFO. */ 593 #ifndef S_ISFIFO 594 # ifdef S_IFIFO 595 # define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO) 596 # else 597 # define S_ISFIFO(m) 0 598 # endif 599 #endif 600 601 /* Define well known filenos if the system does not define them. */ 602 #ifndef STDIN_FILENO 603 # define STDIN_FILENO 0 604 #endif 605 #ifndef STDOUT_FILENO 606 # define STDOUT_FILENO 1 607 #endif 608 #ifndef STDERR_FILENO 609 # define STDERR_FILENO 2 610 #endif 611 612 /* Some systems have mkdir that takes a single argument. */ 613 #ifdef MKDIR_TAKES_ONE_ARG 614 # define mkdir(a,b) mkdir(a) 615 #endif 616 617 #ifndef HAVE_KILL 618 # define kill(p,s) raise(s) 619 #endif 620 621 /* Provide a way to print an address via printf. */ 622 #ifndef HOST_PTR_PRINTF 623 #define HOST_PTR_PRINTF "%p" 624 #endif /* ! HOST_PTR_PRINTF */ 625 626 /* By default, colon separates directories in a path. */ 627 #ifndef PATH_SEPARATOR 628 #define PATH_SEPARATOR ':' 629 #endif 630 631 /* Filename handling macros. */ 632 #include "filenames.h" 633 634 /* These should be phased out in favor of IS_DIR_SEPARATOR, where possible. */ 635 #ifndef DIR_SEPARATOR 636 # define DIR_SEPARATOR '/' 637 # ifdef HAVE_DOS_BASED_FILE_SYSTEM 638 # define DIR_SEPARATOR_2 '\\' 639 # endif 640 #endif 641 642 #if defined (ENABLE_PLUGIN) && defined (HAVE_DLFCN_H) 643 /* If plugin support is enabled, we could use libdl. */ 644 #include <dlfcn.h> 645 #endif 646 647 /* Do not introduce a gmp.h dependency on the build system. */ 648 #ifndef GENERATOR_FILE 649 #include <gmp.h> 650 #endif 651 652 /* Get libiberty declarations. */ 653 #include "libiberty.h" 654 655 #undef FFS /* Some systems predefine this symbol; don't let it interfere. */ 656 #undef FLOAT /* Likewise. */ 657 #undef ABS /* Likewise. */ 658 #undef PC /* Likewise. */ 659 660 /* Provide a default for the HOST_BIT_BUCKET. 661 This suffices for POSIX-like hosts. */ 662 663 #ifndef HOST_BIT_BUCKET 664 #define HOST_BIT_BUCKET "/dev/null" 665 #endif 666 667 #ifndef offsetof 668 #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *) 0)->MEMBER) 669 #endif 670 671 /* Various error reporting routines want to use __FUNCTION__. */ 672 #if (GCC_VERSION < 2007) 673 #ifndef __FUNCTION__ 674 #define __FUNCTION__ "?" 675 #endif /* ! __FUNCTION__ */ 676 #endif 677 678 /* __builtin_expect(A, B) evaluates to A, but notifies the compiler that 679 the most likely value of A is B. This feature was added at some point 680 between 2.95 and 3.0. Let's use 3.0 as the lower bound for now. */ 681 #if (GCC_VERSION < 3000) 682 #define __builtin_expect(a, b) (a) 683 #endif 684 685 /* Redefine abort to report an internal error w/o coredump, and 686 reporting the location of the error in the source file. */ 687 extern void fancy_abort (const char *, int, const char *) ATTRIBUTE_NORETURN; 688 #define abort() fancy_abort (__FILE__, __LINE__, __FUNCTION__) 689 690 /* Use gcc_assert(EXPR) to test invariants. */ 691 #if ENABLE_ASSERT_CHECKING 692 #define gcc_assert(EXPR) \ 693 ((void)(!(EXPR) ? fancy_abort (__FILE__, __LINE__, __FUNCTION__), 0 : 0)) 694 #elif (GCC_VERSION >= 4005) 695 #define gcc_assert(EXPR) \ 696 ((void)(__builtin_expect(!(EXPR), 0) ? __builtin_unreachable(), 0 : 0)) 697 #else 698 /* Include EXPR, so that unused variable warnings do not occur. */ 699 #define gcc_assert(EXPR) ((void)(0 && (EXPR))) 700 #endif 701 702 #ifdef ENABLE_CHECKING 703 #define gcc_checking_assert(EXPR) gcc_assert (EXPR) 704 #else 705 #define gcc_checking_assert(EXPR) ((void)(0 && (EXPR))) 706 #endif 707 708 /* Use gcc_unreachable() to mark unreachable locations (like an 709 unreachable default case of a switch. Do not use gcc_assert(0). */ 710 #if (GCC_VERSION >= 4005) && !ENABLE_ASSERT_CHECKING 711 #define gcc_unreachable() __builtin_unreachable() 712 #else 713 #define gcc_unreachable() (fancy_abort (__FILE__, __LINE__, __FUNCTION__)) 714 #endif 715 716 /* Provide a fake boolean type. We make no attempt to use the 717 C99 _Bool, as it may not be available in the bootstrap compiler, 718 and even if it is, it is liable to be buggy. 719 This must be after all inclusion of system headers, as some of 720 them will mess us up. */ 721 722 #undef TRUE 723 #undef FALSE 724 725 #ifdef __cplusplus 726 /* Obsolete. */ 727 # define TRUE true 728 # define FALSE false 729 #else /* !__cplusplus */ 730 # undef bool 731 # undef true 732 # undef false 733 734 # define bool unsigned char 735 # define true 1 736 # define false 0 737 738 /* Obsolete. */ 739 # define TRUE true 740 # define FALSE false 741 #endif /* !__cplusplus */ 742 743 /* Some compilers do not allow the use of unsigned char in bitfields. */ 744 #define BOOL_BITFIELD unsigned int 745 746 /* As the last action in this file, we poison the identifiers that 747 shouldn't be used. Note, luckily gcc-3.0's token-based integrated 748 preprocessor won't trip on poisoned identifiers that arrive from 749 the expansion of macros. E.g. #define strrchr rindex, won't error 750 if rindex is poisoned after this directive is issued and later on 751 strrchr is called. 752 753 Note: We define bypass macros for the few cases where we really 754 want to use the libc memory allocation routines. Otherwise we 755 insist you use the "x" versions from libiberty. */ 756 757 #define really_call_malloc malloc 758 #define really_call_calloc calloc 759 #define really_call_realloc realloc 760 761 #if defined(FLEX_SCANNER) || defined(YYBISON) || defined(YYBYACC) 762 /* Flex and bison use malloc and realloc. Yuk. Note that this means 763 really_call_* cannot be used in a .l or .y file. */ 764 #define malloc xmalloc 765 #define realloc xrealloc 766 #endif 767 768 #if (GCC_VERSION >= 3000) 769 770 /* Note autoconf checks for prototype declarations and includes 771 system.h while doing so. Only poison these tokens if actually 772 compiling gcc, so that the autoconf declaration tests for malloc 773 etc don't spuriously fail. */ 774 #ifdef IN_GCC 775 #undef calloc 776 #undef strdup 777 #pragma GCC poison calloc strdup 778 779 #if !defined(FLEX_SCANNER) && !defined(YYBISON) 780 #undef malloc 781 #undef realloc 782 #pragma GCC poison malloc realloc 783 #endif 784 785 /* The %m format should be used when GCC's main diagnostic functions 786 supporting %m are available, and xstrerror from libiberty 787 otherwise. */ 788 #undef strerror 789 #pragma GCC poison strerror 790 791 /* loc_t is defined on some systems and too inviting for some 792 programmers to avoid. */ 793 #undef loc_t 794 #pragma GCC poison loc_t 795 796 /* Old target macros that have moved to the target hooks structure. */ 797 #pragma GCC poison ASM_OPEN_PAREN ASM_CLOSE_PAREN \ 798 FUNCTION_PROLOGUE FUNCTION_EPILOGUE \ 799 FUNCTION_END_PROLOGUE FUNCTION_BEGIN_EPILOGUE \ 800 DECL_MACHINE_ATTRIBUTES COMP_TYPE_ATTRIBUTES INSERT_ATTRIBUTES \ 801 VALID_MACHINE_DECL_ATTRIBUTE VALID_MACHINE_TYPE_ATTRIBUTE \ 802 SET_DEFAULT_TYPE_ATTRIBUTES SET_DEFAULT_DECL_ATTRIBUTES \ 803 MERGE_MACHINE_TYPE_ATTRIBUTES MERGE_MACHINE_DECL_ATTRIBUTES \ 804 MD_INIT_BUILTINS MD_EXPAND_BUILTIN ASM_OUTPUT_CONSTRUCTOR \ 805 ASM_OUTPUT_DESTRUCTOR SIGNED_CHAR_SPEC MAX_CHAR_TYPE_SIZE \ 806 WCHAR_UNSIGNED UNIQUE_SECTION SELECT_SECTION SELECT_RTX_SECTION \ 807 ENCODE_SECTION_INFO STRIP_NAME_ENCODING ASM_GLOBALIZE_LABEL \ 808 ASM_OUTPUT_MI_THUNK CONST_COSTS RTX_COSTS DEFAULT_RTX_COSTS \ 809 ADDRESS_COST MACHINE_DEPENDENT_REORG ASM_FILE_START ASM_FILE_END \ 810 ASM_SIMPLIFY_DWARF_ADDR INIT_TARGET_OPTABS INIT_SUBTARGET_OPTABS \ 811 INIT_GOFAST_OPTABS MULSI3_LIBCALL MULDI3_LIBCALL DIVSI3_LIBCALL \ 812 DIVDI3_LIBCALL UDIVSI3_LIBCALL UDIVDI3_LIBCALL MODSI3_LIBCALL \ 813 MODDI3_LIBCALL UMODSI3_LIBCALL UMODDI3_LIBCALL BUILD_VA_LIST_TYPE \ 814 PRETEND_OUTGOING_VARARGS_NAMED STRUCT_VALUE_INCOMING_REGNUM \ 815 ASM_OUTPUT_SECTION_NAME PROMOTE_FUNCTION_ARGS PROMOTE_FUNCTION_MODE \ 816 STRUCT_VALUE_INCOMING STRICT_ARGUMENT_NAMING \ 817 PROMOTE_FUNCTION_RETURN PROMOTE_PROTOTYPES STRUCT_VALUE_REGNUM \ 818 SETUP_INCOMING_VARARGS EXPAND_BUILTIN_SAVEREGS \ 819 DEFAULT_SHORT_ENUMS SPLIT_COMPLEX_ARGS MD_ASM_CLOBBERS \ 820 HANDLE_PRAGMA_REDEFINE_EXTNAME HANDLE_PRAGMA_EXTERN_PREFIX \ 821 MUST_PASS_IN_STACK FUNCTION_ARG_PASS_BY_REFERENCE \ 822 VECTOR_MODE_SUPPORTED_P TARGET_SUPPORTS_HIDDEN \ 823 FUNCTION_ARG_PARTIAL_NREGS ASM_OUTPUT_DWARF_DTPREL \ 824 ALLOCATE_INITIAL_VALUE LEGITIMIZE_ADDRESS FRAME_POINTER_REQUIRED \ 825 CAN_ELIMINATE TRAMPOLINE_TEMPLATE INITIALIZE_TRAMPOLINE \ 826 TRAMPOLINE_ADJUST_ADDRESS STATIC_CHAIN STATIC_CHAIN_INCOMING \ 827 RETURN_POPS_ARGS UNITS_PER_SIMD_WORD OVERRIDE_OPTIONS \ 828 OPTIMIZATION_OPTIONS CLASS_LIKELY_SPILLED_P \ 829 USING_SJLJ_EXCEPTIONS TARGET_UNWIND_INFO \ 830 LABEL_ALIGN_MAX_SKIP LOOP_ALIGN_MAX_SKIP \ 831 LABEL_ALIGN_AFTER_BARRIER_MAX_SKIP JUMP_ALIGN_MAX_SKIP \ 832 CAN_DEBUG_WITHOUT_FP UNLIKELY_EXECUTED_TEXT_SECTION_NAME \ 833 HOT_TEXT_SECTION_NAME LEGITIMATE_CONSTANT_P ALWAYS_STRIP_DOTDOT \ 834 OUTPUT_ADDR_CONST_EXTRA SMALL_REGISTER_CLASSES ASM_OUTPUT_IDENT \ 835 ASM_BYTE_OP MEMBER_TYPE_FORCES_BLK 836 837 /* Target macros only used for code built for the target, that have 838 moved to libgcc-tm.h or have never been present elsewhere. */ 839 #pragma GCC poison DECLARE_LIBRARY_RENAMES LIBGCC2_GNU_PREFIX \ 840 MD_UNWIND_SUPPORT MD_FROB_UPDATE_CONTEXT ENABLE_EXECUTE_STACK \ 841 REG_VALUE_IN_UNWIND_CONTEXT ASSUME_EXTENDED_UNWIND_CONTEXT 842 843 /* Other obsolete target macros, or macros that used to be in target 844 headers and were not used, and may be obsolete or may never have 845 been used. */ 846 #pragma GCC poison INT_ASM_OP ASM_OUTPUT_EH_REGION_BEG CPP_PREDEFINES \ 847 ASM_OUTPUT_EH_REGION_END ASM_OUTPUT_LABELREF_AS_INT SMALL_STACK \ 848 DOESNT_NEED_UNWINDER EH_TABLE_LOOKUP OBJC_SELECTORS_WITHOUT_LABELS \ 849 OMIT_EH_TABLE EASY_DIV_EXPR IMPLICIT_FIX_EXPR \ 850 LONGJMP_RESTORE_FROM_STACK MAX_INT_TYPE_SIZE ASM_IDENTIFY_GCC \ 851 STDC_VALUE TRAMPOLINE_ALIGN ASM_IDENTIFY_GCC_AFTER_SOURCE \ 852 SLOW_ZERO_EXTEND SUBREG_REGNO_OFFSET DWARF_LINE_MIN_INSTR_LENGTH \ 853 TRADITIONAL_RETURN_FLOAT NO_BUILTIN_SIZE_TYPE \ 854 NO_BUILTIN_PTRDIFF_TYPE NO_BUILTIN_WCHAR_TYPE NO_BUILTIN_WINT_TYPE \ 855 BLOCK_PROFILER BLOCK_PROFILER_CODE FUNCTION_BLOCK_PROFILER \ 856 FUNCTION_BLOCK_PROFILER_EXIT MACHINE_STATE_SAVE \ 857 MACHINE_STATE_RESTORE SCCS_DIRECTIVE SECTION_ASM_OP BYTEORDER \ 858 ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL HOST_WORDS_BIG_ENDIAN \ 859 OBJC_PROLOGUE ALLOCATE_TRAMPOLINE HANDLE_PRAGMA ROUND_TYPE_SIZE \ 860 ROUND_TYPE_SIZE_UNIT CONST_SECTION_ASM_OP CRT_GET_RFIB_TEXT \ 861 DBX_LBRAC_FIRST DBX_OUTPUT_ENUM DBX_OUTPUT_SOURCE_FILENAME \ 862 DBX_WORKING_DIRECTORY INSN_CACHE_DEPTH INSN_CACHE_SIZE \ 863 INSN_CACHE_LINE_WIDTH INIT_SECTION_PREAMBLE NEED_ATEXIT ON_EXIT \ 864 EXIT_BODY OBJECT_FORMAT_ROSE MULTIBYTE_CHARS MAP_CHARACTER \ 865 LIBGCC_NEEDS_DOUBLE FINAL_PRESCAN_LABEL DEFAULT_CALLER_SAVES \ 866 LOAD_ARGS_REVERSED MAX_INTEGER_COMPUTATION_MODE \ 867 CONVERT_HARD_REGISTER_TO_SSA_P ASM_OUTPUT_MAIN_SOURCE_FILENAME \ 868 FIRST_INSN_ADDRESS TEXT_SECTION SHARED_BSS_SECTION_ASM_OP \ 869 PROMOTED_MODE EXPAND_BUILTIN_VA_END \ 870 LINKER_DOES_NOT_WORK_WITH_DWARF2 FUNCTION_ARG_KEEP_AS_REFERENCE \ 871 GIV_SORT_CRITERION MAX_LONG_TYPE_SIZE MAX_LONG_DOUBLE_TYPE_SIZE \ 872 MAX_WCHAR_TYPE_SIZE SHARED_SECTION_ASM_OP INTEGRATE_THRESHOLD \ 873 FINAL_REG_PARM_STACK_SPACE MAYBE_REG_PARM_STACK_SPACE \ 874 TRADITIONAL_PIPELINE_INTERFACE DFA_PIPELINE_INTERFACE \ 875 DBX_OUTPUT_STANDARD_TYPES BUILTIN_SETJMP_FRAME_VALUE \ 876 SUNOS4_SHARED_LIBRARIES PROMOTE_FOR_CALL_ONLY \ 877 SPACE_AFTER_L_OPTION NO_RECURSIVE_FUNCTION_CSE \ 878 DEFAULT_MAIN_RETURN TARGET_MEM_FUNCTIONS EXPAND_BUILTIN_VA_ARG \ 879 COLLECT_PARSE_FLAG DWARF2_GENERATE_TEXT_SECTION_LABEL WINNING_GDB \ 880 ASM_OUTPUT_FILENAME ASM_OUTPUT_SOURCE_LINE FILE_NAME_JOINER \ 881 GDB_INV_REF_REGPARM_STABS_LETTER DBX_MEMPARM_STABS_LETTER \ 882 PUT_SDB_SRC_FILE STABS_GCC_MARKER DBX_OUTPUT_FUNCTION_END \ 883 DBX_OUTPUT_GCC_MARKER DBX_FINISH_SYMBOL SDB_GENERATE_FAKE \ 884 NON_SAVING_SETJMP TARGET_LATE_RTL_PROLOGUE_EPILOGUE \ 885 CASE_DROPS_THROUGH TARGET_BELL TARGET_BS TARGET_CR TARGET_DIGIT0 \ 886 TARGET_ESC TARGET_FF TARGET_NEWLINE TARGET_TAB TARGET_VT \ 887 LINK_LIBGCC_SPECIAL DONT_ACCESS_GBLS_AFTER_EPILOGUE \ 888 TARGET_OPTIONS TARGET_SWITCHES EXTRA_CC_MODES FINALIZE_PIC \ 889 PREDICATE_CODES SPECIAL_MODE_PREDICATES UNALIGNED_WORD_ASM_OP \ 890 EXTRA_SECTIONS EXTRA_SECTION_FUNCTIONS READONLY_DATA_SECTION \ 891 TARGET_ASM_EXCEPTION_SECTION TARGET_ASM_EH_FRAME_SECTION \ 892 SMALL_ARG_MAX ASM_OUTPUT_SHARED_BSS ASM_OUTPUT_SHARED_COMMON \ 893 ASM_OUTPUT_SHARED_LOCAL ASM_MAKE_LABEL_LINKONCE \ 894 STACK_CHECK_PROBE_INTERVAL STACK_CHECK_PROBE_LOAD \ 895 ORDER_REGS_FOR_LOCAL_ALLOC FUNCTION_OUTGOING_VALUE \ 896 ASM_DECLARE_CONSTANT_NAME MODIFY_TARGET_NAME SWITCHES_NEED_SPACES \ 897 SWITCH_CURTAILS_COMPILATION SWITCH_TAKES_ARG WORD_SWITCH_TAKES_ARG \ 898 TARGET_OPTION_TRANSLATE_TABLE HANDLE_PRAGMA_PACK_PUSH_POP \ 899 HANDLE_SYSV_PRAGMA HANDLE_PRAGMA_WEAK CONDITIONAL_REGISTER_USAGE \ 900 FUNCTION_ARG_BOUNDARY MUST_USE_SJLJ_EXCEPTIONS US_SOFTWARE_GOFAST \ 901 USING_SVR4_H SVR4_ASM_SPEC FUNCTION_ARG FUNCTION_ARG_ADVANCE \ 902 FUNCTION_INCOMING_ARG IRA_COVER_CLASSES TARGET_VERSION \ 903 MACHINE_TYPE TARGET_HAS_TARGETCM ASM_OUTPUT_BSS \ 904 SETJMP_VIA_SAVE_AREA FORBIDDEN_INC_DEC_CLASSES \ 905 PREFERRED_OUTPUT_RELOAD_CLASS SYSTEM_INCLUDE_DIR \ 906 STANDARD_INCLUDE_DIR STANDARD_INCLUDE_COMPONENT \ 907 LINK_ELIMINATE_DUPLICATE_LDIRECTORIES MIPS_DEBUGGING_INFO \ 908 IDENT_ASM_OP ALL_COP_ADDITIONAL_REGISTER_NAMES DBX_OUTPUT_LBRAC \ 909 DBX_OUTPUT_NFUN DBX_OUTPUT_RBRAC RANGE_TEST_NON_SHORT_CIRCUIT \ 910 REAL_VALUE_TRUNCATE REVERSE_CONDEXEC_PREDICATES_P \ 911 TARGET_ALIGN_ANON_BITFIELDS TARGET_NARROW_VOLATILE_BITFIELDS \ 912 IDENT_ASM_OP UNALIGNED_SHORT_ASM_OP UNALIGNED_INT_ASM_OP \ 913 UNALIGNED_LONG_ASM_OP UNALIGNED_DOUBLE_INT_ASM_OP \ 914 USE_COMMON_FOR_ONE_ONLY IFCVT_EXTRA_FIELDS IFCVT_INIT_EXTRA_FIELDS \ 915 CASE_USE_BIT_TESTS FIXUNS_TRUNC_LIKE_FIX_TRUNC \ 916 GO_IF_MODE_DEPENDENT_ADDRESS DELAY_SLOTS_FOR_EPILOGUE \ 917 ELIGIBLE_FOR_EPILOGUE_DELAY 918 919 /* Hooks that are no longer used. */ 920 #pragma GCC poison LANG_HOOKS_FUNCTION_MARK LANG_HOOKS_FUNCTION_FREE \ 921 LANG_HOOKS_MARK_TREE LANG_HOOKS_INSERT_DEFAULT_ATTRIBUTES \ 922 LANG_HOOKS_TREE_INLINING_ESTIMATE_NUM_INSNS \ 923 LANG_HOOKS_PUSHLEVEL LANG_HOOKS_SET_BLOCK \ 924 LANG_HOOKS_MAYBE_BUILD_CLEANUP LANG_HOOKS_UPDATE_DECL_AFTER_SAVING \ 925 LANG_HOOKS_POPLEVEL LANG_HOOKS_TRUTHVALUE_CONVERSION \ 926 TARGET_PROMOTE_FUNCTION_ARGS TARGET_PROMOTE_FUNCTION_RETURN \ 927 LANG_HOOKS_MISSING_ARGUMENT LANG_HOOKS_HASH_TYPES \ 928 TARGET_HANDLE_OFAST TARGET_OPTION_OPTIMIZATION \ 929 TARGET_IRA_COVER_CLASSES TARGET_HELP \ 930 TARGET_HANDLE_PRAGMA_EXTERN_PREFIX \ 931 TARGET_VECTORIZE_BUILTIN_MUL_WIDEN_EVEN \ 932 TARGET_VECTORIZE_BUILTIN_MUL_WIDEN_ODD \ 933 934 /* Arrays that were deleted in favor of a functional interface. */ 935 #pragma GCC poison built_in_decls implicit_built_in_decls 936 937 /* Hooks into libgcc2. */ 938 #pragma GCC poison LIBGCC2_DOUBLE_TYPE_SIZE LIBGCC2_WORDS_BIG_ENDIAN \ 939 LIBGCC2_FLOAT_WORDS_BIG_ENDIAN 940 941 /* Miscellaneous macros that are no longer used. */ 942 #pragma GCC poison USE_MAPPED_LOCATION GET_ENVIRONMENT 943 944 /* Libiberty macros that are no longer used in GCC. */ 945 #undef ANSI_PROTOTYPES 946 #undef PTR_CONST 947 #undef LONG_DOUBLE 948 #undef VPARAMS 949 #undef VA_OPEN 950 #undef VA_FIXEDARG 951 #undef VA_CLOSE 952 #undef VA_START 953 #pragma GCC poison ANSI_PROTOTYPES PTR_CONST LONG_DOUBLE VPARAMS VA_OPEN \ 954 VA_FIXEDARG VA_CLOSE VA_START 955 #endif /* IN_GCC */ 956 957 /* Front ends should never have to include middle-end headers. Enforce 958 this by poisoning the header double-include protection defines. */ 959 #ifdef IN_GCC_FRONTEND 960 #pragma GCC poison GCC_RTL_H GCC_EXCEPT_H GCC_EXPR_H 961 #endif 962 963 /* Note: not all uses of the `index' token (e.g. variable names and 964 structure members) have been eliminated. */ 965 #undef bcopy 966 #undef bzero 967 #undef bcmp 968 #undef rindex 969 #pragma GCC poison bcopy bzero bcmp rindex 970 971 #endif /* GCC >= 3.0 */ 972 973 /* This macro allows casting away const-ness to pass -Wcast-qual 974 warnings. DO NOT USE THIS UNLESS YOU REALLY HAVE TO! It should 975 only be used in certain specific cases. One valid case is where 976 the C standard definitions or prototypes force you to. E.g. if you 977 need to free a const object, or if you pass a const string to 978 execv, et al. Another valid use would be in an allocation function 979 that creates const objects that need to be initialized. In some 980 cases we have non-const functions that return the argument 981 (e.g. next_nonnote_insn). Rather than create const shadow 982 functions, we can cast away const-ness in calling these interfaces 983 if we're careful to verify that the called function does indeed not 984 modify its argument and the return value is only used in a const 985 context. (This can be somewhat dangerous as these assumptions can 986 change after the fact). Beyond these uses, most other cases of 987 using this macro should be viewed with extreme caution. */ 988 989 #ifdef __cplusplus 990 #define CONST_CAST2(TOTYPE,FROMTYPE,X) (const_cast<TOTYPE> (X)) 991 #else 992 #if defined(__GNUC__) && GCC_VERSION > 4000 993 /* GCC 4.0.x has a bug where it may ICE on this expression, 994 so does GCC 3.4.x (PR17436). */ 995 #define CONST_CAST2(TOTYPE,FROMTYPE,X) ((__extension__(union {FROMTYPE _q; TOTYPE _nq;})(X))._nq) 996 #elif defined(__GNUC__) 997 static inline char * 998 helper_const_non_const_cast (const char *p) 999 { 1000 union { 1001 const char *const_c; 1002 char *c; 1003 } val; 1004 val.const_c = p; 1005 return val.c; 1006 } 1007 1008 #define CONST_CAST2(TOTYPE,FROMTYPE,X) \ 1009 ((TOTYPE) helper_const_non_const_cast ((const char *) (FROMTYPE) (X))) 1010 #else 1011 #define CONST_CAST2(TOTYPE,FROMTYPE,X) ((TOTYPE)(FROMTYPE)(X)) 1012 #endif 1013 #endif 1014 #define CONST_CAST(TYPE,X) CONST_CAST2(TYPE, const TYPE, (X)) 1015 #define CONST_CAST_TREE(X) CONST_CAST(union tree_node *, (X)) 1016 #define CONST_CAST_RTX(X) CONST_CAST(struct rtx_def *, (X)) 1017 #define CONST_CAST_BB(X) CONST_CAST(struct basic_block_def *, (X)) 1018 #define CONST_CAST_GIMPLE(X) CONST_CAST(union gimple_statement_d *, (X)) 1019 1020 /* Activate certain diagnostics as warnings (not errors via the 1021 -Werror flag). */ 1022 #if GCC_VERSION >= 4003 1023 /* If asserts are disabled, activate -Wuninitialized as a warning (not 1024 an error/-Werror). */ 1025 #ifndef ENABLE_ASSERT_CHECKING 1026 #pragma GCC diagnostic warning "-Wuninitialized" 1027 #endif 1028 #endif 1029 1030 #ifdef ENABLE_VALGRIND_CHECKING 1031 # ifdef HAVE_VALGRIND_MEMCHECK_H 1032 # include <valgrind/memcheck.h> 1033 # elif defined HAVE_MEMCHECK_H 1034 # include <memcheck.h> 1035 # else 1036 # include <valgrind.h> 1037 # endif 1038 /* Compatibility macros to let valgrind 3.1 work. */ 1039 # ifndef VALGRIND_MAKE_MEM_NOACCESS 1040 # define VALGRIND_MAKE_MEM_NOACCESS VALGRIND_MAKE_NOACCESS 1041 # endif 1042 # ifndef VALGRIND_MAKE_MEM_DEFINED 1043 # define VALGRIND_MAKE_MEM_DEFINED VALGRIND_MAKE_READABLE 1044 # endif 1045 # ifndef VALGRIND_MAKE_MEM_UNDEFINED 1046 # define VALGRIND_MAKE_MEM_UNDEFINED VALGRIND_MAKE_WRITABLE 1047 # endif 1048 #else 1049 /* Avoid #ifdef:s when we can help it. */ 1050 #define VALGRIND_DISCARD(x) 1051 #define VALGRIND_MALLOCLIKE_BLOCK(w,x,y,z) 1052 #define VALGRIND_FREELIKE_BLOCK(x,y) 1053 #endif 1054 1055 /* In LTO -fwhole-program build we still want to keep the debug functions available 1056 for debugger. Mark them as used to prevent removal. */ 1057 #if (GCC_VERSION > 4000) 1058 #define DEBUG_FUNCTION __attribute__ ((__used__)) 1059 #define DEBUG_VARIABLE __attribute__ ((__used__)) 1060 #else 1061 #define DEBUG_FUNCTION 1062 #define DEBUG_VARIABLE 1063 #endif 1064 1065 #endif /* ! GCC_SYSTEM_H */ 1066