1/* Get common system includes and various definitions and declarations based 2 on autoconf macros. 3 Copyright (C) 1998-2015 Free Software Foundation, Inc. 4 5This file is part of GCC. 6 7GCC is free software; you can redistribute it and/or modify it under 8the terms of the GNU General Public License as published by the Free 9Software Foundation; either version 3, or (at your option) any later 10version. 11 12GCC is distributed in the hope that it will be useful, but WITHOUT ANY 13WARRANTY; without even the implied warranty of MERCHANTABILITY or 14FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 15for more details. 16 17You should have received a copy of the GNU General Public License 18along 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/* Define this so that inttypes.h defines the PRI?64 macros even 26 when compiling with a C++ compiler. Define it here so in the 27 event inttypes.h gets pulled in by another header it is already 28 defined. */ 29#define __STDC_FORMAT_MACROS 30 31/* We must include stdarg.h before stdio.h. */ 32#include <stdarg.h> 33 34#ifndef va_copy 35# ifdef __va_copy 36# define va_copy(d,s) __va_copy (d, s) 37# else 38# define va_copy(d,s) ((d) = (s)) 39# endif 40#endif 41 42#ifdef HAVE_STDDEF_H 43# include <stddef.h> 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 103extern "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 110extern 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 117extern 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 124extern 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 131extern 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 138extern 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 145extern 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 152extern 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 159extern 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 166extern 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 173extern 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 182extern 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/* Include <string> before "safe-ctype.h" to avoid GCC poisoning 198 the ctype macros through safe-ctype.h */ 199 200#ifdef __cplusplus 201# include <string> 202#endif 203 204/* There are an extraordinary number of issues with <ctype.h>. 205 The last straw is that it varies with the locale. Use libiberty's 206 replacement instead. */ 207#include "safe-ctype.h" 208 209#include <sys/types.h> 210 211#include <errno.h> 212 213#if !defined (errno) && defined (HAVE_DECL_ERRNO) && !HAVE_DECL_ERRNO 214extern int errno; 215#endif 216 217#ifdef __cplusplus 218# include <algorithm> 219# include <cstring> 220# include <utility> 221#endif 222 223/* Some of glibc's string inlines cause warnings. Plus we'd rather 224 rely on (and therefore test) GCC's string builtins. */ 225#define __NO_STRING_INLINES 226 227#ifdef STRING_WITH_STRINGS 228# include <string.h> 229# include <strings.h> 230#else 231# ifdef HAVE_STRING_H 232# include <string.h> 233# else 234# ifdef HAVE_STRINGS_H 235# include <strings.h> 236# endif 237# endif 238#endif 239 240#ifdef HAVE_STDLIB_H 241# include <stdlib.h> 242#endif 243 244/* When compiling C++ we need to include <cstdlib> as well as <stdlib.h> so 245 that it is processed before we poison "malloc"; otherwise, if a source 246 file uses a standard library header that includes <cstdlib>, we will get 247 an error about 'using std::malloc'. */ 248#ifdef __cplusplus 249#include <cstdlib> 250#endif 251 252/* Undef vec_free from AIX stdlib.h header which conflicts with vec.h. */ 253#undef vec_free 254 255/* If we don't have an overriding definition, set SUCCESS_EXIT_CODE and 256 FATAL_EXIT_CODE to EXIT_SUCCESS and EXIT_FAILURE respectively, 257 or 0 and 1 if those macros are not defined. */ 258#ifndef SUCCESS_EXIT_CODE 259# ifdef EXIT_SUCCESS 260# define SUCCESS_EXIT_CODE EXIT_SUCCESS 261# else 262# define SUCCESS_EXIT_CODE 0 263# endif 264#endif 265 266#ifndef FATAL_EXIT_CODE 267# ifdef EXIT_FAILURE 268# define FATAL_EXIT_CODE EXIT_FAILURE 269# else 270# define FATAL_EXIT_CODE 1 271# endif 272#endif 273 274#define ICE_EXIT_CODE 4 275 276#ifdef HAVE_UNISTD_H 277# include <unistd.h> 278#endif 279 280#ifdef HAVE_SYS_PARAM_H 281# include <sys/param.h> 282/* We use these identifiers later and they appear in some vendor param.h's. */ 283# undef PREFETCH 284# undef m_slot 285#endif 286 287#if HAVE_LIMITS_H 288# include <limits.h> 289#endif 290 291/* A macro to determine whether a VALUE lies inclusively within a 292 certain range without evaluating the VALUE more than once. This 293 macro won't warn if the VALUE is unsigned and the LOWER bound is 294 zero, as it would e.g. with "VALUE >= 0 && ...". Note the LOWER 295 bound *is* evaluated twice, and LOWER must not be greater than 296 UPPER. However the bounds themselves can be either positive or 297 negative. */ 298#define IN_RANGE(VALUE, LOWER, UPPER) \ 299 ((unsigned HOST_WIDE_INT) (VALUE) - (unsigned HOST_WIDE_INT) (LOWER) \ 300 <= (unsigned HOST_WIDE_INT) (UPPER) - (unsigned HOST_WIDE_INT) (LOWER)) 301 302/* Infrastructure for defining missing _MAX and _MIN macros. Note that 303 macros defined with these cannot be used in #if. */ 304 305/* The extra casts work around common compiler bugs. */ 306#define INTTYPE_SIGNED(t) (! ((t) 0 < (t) -1)) 307/* The outer cast is needed to work around a bug in Cray C 5.0.3.0. 308 It is necessary at least when t == time_t. */ 309#define INTTYPE_MINIMUM(t) ((t) (INTTYPE_SIGNED (t) \ 310 ? ~ (t) 0 << (sizeof (t) * CHAR_BIT - 1) : (t) 0)) 311#define INTTYPE_MAXIMUM(t) ((t) (~ (t) 0 - INTTYPE_MINIMUM (t))) 312 313/* Use that infrastructure to provide a few constants. */ 314#ifndef UCHAR_MAX 315# define UCHAR_MAX INTTYPE_MAXIMUM (unsigned char) 316#endif 317 318#ifdef TIME_WITH_SYS_TIME 319# include <sys/time.h> 320# include <time.h> 321#else 322# if HAVE_SYS_TIME_H 323# include <sys/time.h> 324# else 325# ifdef HAVE_TIME_H 326# include <time.h> 327# endif 328# endif 329#endif 330 331#ifdef HAVE_FCNTL_H 332# include <fcntl.h> 333#else 334# ifdef HAVE_SYS_FILE_H 335# include <sys/file.h> 336# endif 337#endif 338 339#ifndef SEEK_SET 340# define SEEK_SET 0 341# define SEEK_CUR 1 342# define SEEK_END 2 343#endif 344#ifndef F_OK 345# define F_OK 0 346# define X_OK 1 347# define W_OK 2 348# define R_OK 4 349#endif 350#ifndef O_RDONLY 351# define O_RDONLY 0 352#endif 353#ifndef O_WRONLY 354# define O_WRONLY 1 355#endif 356#ifndef O_BINARY 357# define O_BINARY 0 358#endif 359 360/* Some systems define these in, e.g., param.h. We undefine these names 361 here to avoid the warnings. We prefer to use our definitions since we 362 know they are correct. */ 363 364#undef MIN 365#undef MAX 366#define MIN(X,Y) ((X) < (Y) ? (X) : (Y)) 367#define MAX(X,Y) ((X) > (Y) ? (X) : (Y)) 368 369/* Returns the least number N such that N * Y >= X. */ 370#define CEIL(x,y) (((x) + (y) - 1) / (y)) 371 372#ifdef HAVE_SYS_WAIT_H 373#include <sys/wait.h> 374#endif 375 376#ifndef WIFSIGNALED 377#define WIFSIGNALED(S) (((S) & 0xff) != 0 && ((S) & 0xff) != 0x7f) 378#endif 379#ifndef WTERMSIG 380#define WTERMSIG(S) ((S) & 0x7f) 381#endif 382#ifndef WIFEXITED 383#define WIFEXITED(S) (((S) & 0xff) == 0) 384#endif 385#ifndef WEXITSTATUS 386#define WEXITSTATUS(S) (((S) & 0xff00) >> 8) 387#endif 388#ifndef WSTOPSIG 389#define WSTOPSIG WEXITSTATUS 390#endif 391#ifndef WCOREDUMP 392#define WCOREDUMP(S) ((S) & WCOREFLG) 393#endif 394#ifndef WCOREFLG 395#define WCOREFLG 0200 396#endif 397 398#include <signal.h> 399#if !defined (SIGCHLD) && defined (SIGCLD) 400# define SIGCHLD SIGCLD 401#endif 402 403#ifdef HAVE_SYS_MMAN_H 404# include <sys/mman.h> 405#endif 406 407#ifndef MAP_FAILED 408# define MAP_FAILED ((void *)-1) 409#endif 410 411#if !defined (MAP_ANONYMOUS) && defined (MAP_ANON) 412# define MAP_ANONYMOUS MAP_ANON 413#endif 414 415#ifdef HAVE_SYS_RESOURCE_H 416# include <sys/resource.h> 417#endif 418 419#ifdef HAVE_SYS_TIMES_H 420# include <sys/times.h> 421#endif 422 423/* The HAVE_DECL_* macros are three-state, undefined, 0 or 1. If they 424 are defined to 0 then we must provide the relevant declaration 425 here. These checks will be in the undefined state while configure 426 is running so be careful to test "defined (HAVE_DECL_*)". */ 427 428#ifdef __cplusplus 429extern "C" { 430#endif 431 432#if defined (HAVE_DECL_ATOF) && !HAVE_DECL_ATOF 433extern double atof (const char *); 434#endif 435 436#if defined (HAVE_DECL_ATOL) && !HAVE_DECL_ATOL 437extern long atol (const char *); 438#endif 439 440#if defined (HAVE_DECL_FREE) && !HAVE_DECL_FREE 441extern void free (void *); 442#endif 443 444#if defined (HAVE_DECL_GETCWD) && !HAVE_DECL_GETCWD 445extern char *getcwd (char *, size_t); 446#endif 447 448#if defined (HAVE_DECL_GETENV) && !HAVE_DECL_GETENV 449extern char *getenv (const char *); 450#endif 451 452#if defined (HAVE_DECL_GETOPT) && !HAVE_DECL_GETOPT 453extern int getopt (int, char * const *, const char *); 454#endif 455 456#if defined (HAVE_DECL_GETPAGESIZE) && !HAVE_DECL_GETPAGESIZE 457extern int getpagesize (void); 458#endif 459 460#if defined (HAVE_DECL_GETWD) && !HAVE_DECL_GETWD 461extern char *getwd (char *); 462#endif 463 464#if defined (HAVE_DECL_SBRK) && !HAVE_DECL_SBRK 465extern void *sbrk (int); 466#endif 467 468#if defined (HAVE_DECL_STRSTR) && !HAVE_DECL_STRSTR 469extern char *strstr (const char *, const char *); 470#endif 471 472#if defined (HAVE_DECL_STPCPY) && !HAVE_DECL_STPCPY 473extern char *stpcpy (char *, const char *); 474#endif 475 476#ifdef __cplusplus 477} 478#endif 479 480#ifdef HAVE_MALLOC_H 481#include <malloc.h> 482#endif 483 484#ifdef __cplusplus 485extern "C" { 486#endif 487 488#if defined (HAVE_DECL_MALLOC) && !HAVE_DECL_MALLOC 489extern void *malloc (size_t); 490#endif 491 492#if defined (HAVE_DECL_CALLOC) && !HAVE_DECL_CALLOC 493extern void *calloc (size_t, size_t); 494#endif 495 496#if defined (HAVE_DECL_REALLOC) && !HAVE_DECL_REALLOC 497extern void *realloc (void *, size_t); 498#endif 499 500#ifdef __cplusplus 501} 502#endif 503 504#ifdef HAVE_STDINT_H 505#include <stdint.h> 506#endif 507 508#ifdef HAVE_INTTYPES_H 509#include <inttypes.h> 510#endif 511 512#ifdef __cplusplus 513extern "C" { 514#endif 515 516/* If the system doesn't provide strsignal, we get it defined in 517 libiberty but no declaration is supplied. */ 518#if !defined (HAVE_STRSIGNAL) \ 519 || (defined (HAVE_DECL_STRSIGNAL) && !HAVE_DECL_STRSIGNAL) 520# ifndef strsignal 521extern const char *strsignal (int); 522# endif 523#endif 524 525#ifdef HAVE_GETRLIMIT 526# if defined (HAVE_DECL_GETRLIMIT) && !HAVE_DECL_GETRLIMIT 527# ifndef getrlimit 528struct rlimit; 529extern int getrlimit (int, struct rlimit *); 530# endif 531# endif 532#endif 533 534#ifdef HAVE_SETRLIMIT 535# if defined (HAVE_DECL_SETRLIMIT) && !HAVE_DECL_SETRLIMIT 536# ifndef setrlimit 537struct rlimit; 538extern int setrlimit (int, const struct rlimit *); 539# endif 540# endif 541#endif 542 543#if defined (HAVE_DECL_ABORT) && !HAVE_DECL_ABORT 544extern void abort (void); 545#endif 546 547#if defined (HAVE_DECL_SNPRINTF) && !HAVE_DECL_SNPRINTF 548extern int snprintf (char *, size_t, const char *, ...); 549#endif 550 551#if defined (HAVE_DECL_VSNPRINTF) && !HAVE_DECL_VSNPRINTF 552extern int vsnprintf (char *, size_t, const char *, va_list); 553#endif 554 555#ifdef __cplusplus 556} 557#endif 558 559/* 1 if we have C99 designated initializers. */ 560#if !defined(HAVE_DESIGNATED_INITIALIZERS) 561#define HAVE_DESIGNATED_INITIALIZERS \ 562 (((GCC_VERSION >= 2007) || (__STDC_VERSION__ >= 199901L)) \ 563 && !defined(__cplusplus)) 564#endif 565 566#if !defined(HAVE_DESIGNATED_UNION_INITIALIZERS) 567#define HAVE_DESIGNATED_UNION_INITIALIZERS \ 568 (((GCC_VERSION >= 2007) || (__STDC_VERSION__ >= 199901L)) \ 569 && (!defined(__cplusplus) || (GCC_VERSION >= 4007))) 570#endif 571 572#if HAVE_SYS_STAT_H 573# include <sys/stat.h> 574#endif 575 576/* Test if something is a normal file. */ 577#ifndef S_ISREG 578#define S_ISREG(m) (((m) & S_IFMT) == S_IFREG) 579#endif 580 581/* Test if something is a directory. */ 582#ifndef S_ISDIR 583#define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR) 584#endif 585 586/* Test if something is a character special file. */ 587#ifndef S_ISCHR 588#define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR) 589#endif 590 591/* Test if something is a block special file. */ 592#ifndef S_ISBLK 593#define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK) 594#endif 595 596/* Test if something is a socket. */ 597#ifndef S_ISSOCK 598# ifdef S_IFSOCK 599# define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK) 600# else 601# define S_ISSOCK(m) 0 602# endif 603#endif 604 605/* Test if something is a FIFO. */ 606#ifndef S_ISFIFO 607# ifdef S_IFIFO 608# define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO) 609# else 610# define S_ISFIFO(m) 0 611# endif 612#endif 613 614/* Define well known filenos if the system does not define them. */ 615#ifndef STDIN_FILENO 616# define STDIN_FILENO 0 617#endif 618#ifndef STDOUT_FILENO 619# define STDOUT_FILENO 1 620#endif 621#ifndef STDERR_FILENO 622# define STDERR_FILENO 2 623#endif 624 625/* Some systems have mkdir that takes a single argument. */ 626#ifdef MKDIR_TAKES_ONE_ARG 627# define mkdir(a,b) mkdir (a) 628#endif 629 630#ifndef HAVE_KILL 631# define kill(p,s) raise (s) 632#endif 633 634/* Provide a way to print an address via printf. */ 635#ifndef HOST_PTR_PRINTF 636#define HOST_PTR_PRINTF "%p" 637#endif /* ! HOST_PTR_PRINTF */ 638 639/* By default, colon separates directories in a path. */ 640#ifndef PATH_SEPARATOR 641#define PATH_SEPARATOR ':' 642#endif 643 644/* Filename handling macros. */ 645#include "filenames.h" 646 647/* These should be phased out in favor of IS_DIR_SEPARATOR, where possible. */ 648#ifndef DIR_SEPARATOR 649# define DIR_SEPARATOR '/' 650# ifdef HAVE_DOS_BASED_FILE_SYSTEM 651# define DIR_SEPARATOR_2 '\\' 652# endif 653#endif 654 655#if defined (ENABLE_PLUGIN) && defined (HAVE_DLFCN_H) 656/* If plugin support is enabled, we could use libdl. */ 657#include <dlfcn.h> 658#endif 659 660/* Do not introduce a gmp.h dependency on the build system. */ 661#ifndef GENERATOR_FILE 662#include <gmp.h> 663#endif 664 665/* Get libiberty declarations. */ 666#include "libiberty.h" 667 668#undef FFS /* Some systems predefine this symbol; don't let it interfere. */ 669#undef FLOAT /* Likewise. */ 670#undef ABS /* Likewise. */ 671#undef PC /* Likewise. */ 672 673/* Provide a default for the HOST_BIT_BUCKET. 674 This suffices for POSIX-like hosts. */ 675 676#ifndef HOST_BIT_BUCKET 677#define HOST_BIT_BUCKET "/dev/null" 678#endif 679 680#ifndef offsetof 681#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *) 0)->MEMBER) 682#endif 683 684/* Various error reporting routines want to use __FUNCTION__. */ 685#if (GCC_VERSION < 2007) 686#ifndef __FUNCTION__ 687#define __FUNCTION__ "?" 688#endif /* ! __FUNCTION__ */ 689#endif 690 691/* __builtin_expect(A, B) evaluates to A, but notifies the compiler that 692 the most likely value of A is B. This feature was added at some point 693 between 2.95 and 3.0. Let's use 3.0 as the lower bound for now. */ 694#if (GCC_VERSION < 3000) 695#define __builtin_expect(a, b) (a) 696#endif 697 698/* Redefine abort to report an internal error w/o coredump, and 699 reporting the location of the error in the source file. */ 700extern void fancy_abort (const char *, int, const char *) ATTRIBUTE_NORETURN; 701#define abort() fancy_abort (__FILE__, __LINE__, __FUNCTION__) 702 703/* Use gcc_assert(EXPR) to test invariants. */ 704#if ENABLE_ASSERT_CHECKING 705#define gcc_assert(EXPR) \ 706 ((void)(!(EXPR) ? fancy_abort (__FILE__, __LINE__, __FUNCTION__), 0 : 0)) 707#elif (GCC_VERSION >= 4005) 708#define gcc_assert(EXPR) \ 709 ((void)(__builtin_expect (!(EXPR), 0) ? __builtin_unreachable (), 0 : 0)) 710#else 711/* Include EXPR, so that unused variable warnings do not occur. */ 712#define gcc_assert(EXPR) ((void)(0 && (EXPR))) 713#endif 714 715#ifdef ENABLE_CHECKING 716#define gcc_checking_assert(EXPR) gcc_assert (EXPR) 717#else 718#define gcc_checking_assert(EXPR) ((void)(0 && (EXPR))) 719#endif 720 721/* Use gcc_unreachable() to mark unreachable locations (like an 722 unreachable default case of a switch. Do not use gcc_assert(0). */ 723#if (GCC_VERSION >= 4005) && !ENABLE_ASSERT_CHECKING 724#define gcc_unreachable() __builtin_unreachable () 725#else 726#define gcc_unreachable() (fancy_abort (__FILE__, __LINE__, __FUNCTION__)) 727#endif 728 729#if GCC_VERSION >= 3001 730#define STATIC_CONSTANT_P(X) (__builtin_constant_p (X) && (X)) 731#else 732#define STATIC_CONSTANT_P(X) (false && (X)) 733#endif 734 735/* Until we can use C++11's static_assert. */ 736#define STATIC_ASSERT(X) \ 737 typedef int assertion1[(X) ? 1 : -1] ATTRIBUTE_UNUSED 738 739/* Provide a fake boolean type. We make no attempt to use the 740 C99 _Bool, as it may not be available in the bootstrap compiler, 741 and even if it is, it is liable to be buggy. 742 This must be after all inclusion of system headers, as some of 743 them will mess us up. */ 744 745#undef TRUE 746#undef FALSE 747 748#ifdef __cplusplus 749 /* Obsolete. */ 750# define TRUE true 751# define FALSE false 752#else /* !__cplusplus */ 753# undef bool 754# undef true 755# undef false 756 757# define bool unsigned char 758# define true 1 759# define false 0 760 761 /* Obsolete. */ 762# define TRUE true 763# define FALSE false 764#endif /* !__cplusplus */ 765 766/* Some compilers do not allow the use of unsigned char in bitfields. */ 767#define BOOL_BITFIELD unsigned int 768 769/* As the last action in this file, we poison the identifiers that 770 shouldn't be used. Note, luckily gcc-3.0's token-based integrated 771 preprocessor won't trip on poisoned identifiers that arrive from 772 the expansion of macros. E.g. #define strrchr rindex, won't error 773 if rindex is poisoned after this directive is issued and later on 774 strrchr is called. 775 776 Note: We define bypass macros for the few cases where we really 777 want to use the libc memory allocation routines. Otherwise we 778 insist you use the "x" versions from libiberty. */ 779 780#define really_call_malloc malloc 781#define really_call_calloc calloc 782#define really_call_realloc realloc 783 784#if defined(FLEX_SCANNER) || defined(YYBISON) || defined(YYBYACC) 785/* Flex and bison use malloc and realloc. Yuk. Note that this means 786 really_call_* cannot be used in a .l or .y file. */ 787#define malloc xmalloc 788#define realloc xrealloc 789#endif 790 791#if (GCC_VERSION >= 3000) 792 793/* Note autoconf checks for prototype declarations and includes 794 system.h while doing so. Only poison these tokens if actually 795 compiling gcc, so that the autoconf declaration tests for malloc 796 etc don't spuriously fail. */ 797#ifdef IN_GCC 798#undef calloc 799#undef strdup 800 #pragma GCC poison calloc strdup 801 802#if !defined(FLEX_SCANNER) && !defined(YYBISON) 803#undef malloc 804#undef realloc 805 #pragma GCC poison malloc realloc 806#endif 807 808/* The %m format should be used when GCC's main diagnostic functions 809 supporting %m are available, and xstrerror from libiberty 810 otherwise. */ 811#undef strerror 812 #pragma GCC poison strerror 813 814/* loc_t is defined on some systems and too inviting for some 815 programmers to avoid. */ 816#undef loc_t 817 #pragma GCC poison loc_t 818 819/* Old target macros that have moved to the target hooks structure. */ 820 #pragma GCC poison ASM_OPEN_PAREN ASM_CLOSE_PAREN \ 821 FUNCTION_PROLOGUE FUNCTION_EPILOGUE \ 822 FUNCTION_END_PROLOGUE FUNCTION_BEGIN_EPILOGUE \ 823 DECL_MACHINE_ATTRIBUTES COMP_TYPE_ATTRIBUTES INSERT_ATTRIBUTES \ 824 VALID_MACHINE_DECL_ATTRIBUTE VALID_MACHINE_TYPE_ATTRIBUTE \ 825 SET_DEFAULT_TYPE_ATTRIBUTES SET_DEFAULT_DECL_ATTRIBUTES \ 826 MERGE_MACHINE_TYPE_ATTRIBUTES MERGE_MACHINE_DECL_ATTRIBUTES \ 827 MD_INIT_BUILTINS MD_EXPAND_BUILTIN ASM_OUTPUT_CONSTRUCTOR \ 828 ASM_OUTPUT_DESTRUCTOR SIGNED_CHAR_SPEC MAX_CHAR_TYPE_SIZE \ 829 WCHAR_UNSIGNED UNIQUE_SECTION SELECT_SECTION SELECT_RTX_SECTION \ 830 ENCODE_SECTION_INFO STRIP_NAME_ENCODING ASM_GLOBALIZE_LABEL \ 831 ASM_OUTPUT_MI_THUNK CONST_COSTS RTX_COSTS DEFAULT_RTX_COSTS \ 832 ADDRESS_COST MACHINE_DEPENDENT_REORG ASM_FILE_START ASM_FILE_END \ 833 ASM_SIMPLIFY_DWARF_ADDR INIT_TARGET_OPTABS INIT_SUBTARGET_OPTABS \ 834 INIT_GOFAST_OPTABS MULSI3_LIBCALL MULDI3_LIBCALL DIVSI3_LIBCALL \ 835 DIVDI3_LIBCALL UDIVSI3_LIBCALL UDIVDI3_LIBCALL MODSI3_LIBCALL \ 836 MODDI3_LIBCALL UMODSI3_LIBCALL UMODDI3_LIBCALL BUILD_VA_LIST_TYPE \ 837 PRETEND_OUTGOING_VARARGS_NAMED STRUCT_VALUE_INCOMING_REGNUM \ 838 ASM_OUTPUT_SECTION_NAME PROMOTE_FUNCTION_ARGS PROMOTE_FUNCTION_MODE \ 839 STRUCT_VALUE_INCOMING STRICT_ARGUMENT_NAMING \ 840 PROMOTE_FUNCTION_RETURN PROMOTE_PROTOTYPES STRUCT_VALUE_REGNUM \ 841 SETUP_INCOMING_VARARGS EXPAND_BUILTIN_SAVEREGS \ 842 DEFAULT_SHORT_ENUMS SPLIT_COMPLEX_ARGS MD_ASM_CLOBBERS \ 843 HANDLE_PRAGMA_REDEFINE_EXTNAME HANDLE_PRAGMA_EXTERN_PREFIX \ 844 MUST_PASS_IN_STACK FUNCTION_ARG_PASS_BY_REFERENCE \ 845 VECTOR_MODE_SUPPORTED_P TARGET_SUPPORTS_HIDDEN \ 846 FUNCTION_ARG_PARTIAL_NREGS ASM_OUTPUT_DWARF_DTPREL \ 847 ALLOCATE_INITIAL_VALUE LEGITIMIZE_ADDRESS FRAME_POINTER_REQUIRED \ 848 CAN_ELIMINATE TRAMPOLINE_TEMPLATE INITIALIZE_TRAMPOLINE \ 849 TRAMPOLINE_ADJUST_ADDRESS STATIC_CHAIN STATIC_CHAIN_INCOMING \ 850 RETURN_POPS_ARGS UNITS_PER_SIMD_WORD OVERRIDE_OPTIONS \ 851 OPTIMIZATION_OPTIONS CLASS_LIKELY_SPILLED_P \ 852 USING_SJLJ_EXCEPTIONS TARGET_UNWIND_INFO \ 853 LABEL_ALIGN_MAX_SKIP LOOP_ALIGN_MAX_SKIP \ 854 LABEL_ALIGN_AFTER_BARRIER_MAX_SKIP JUMP_ALIGN_MAX_SKIP \ 855 CAN_DEBUG_WITHOUT_FP UNLIKELY_EXECUTED_TEXT_SECTION_NAME \ 856 HOT_TEXT_SECTION_NAME LEGITIMATE_CONSTANT_P ALWAYS_STRIP_DOTDOT \ 857 OUTPUT_ADDR_CONST_EXTRA SMALL_REGISTER_CLASSES ASM_OUTPUT_IDENT \ 858 ASM_BYTE_OP MEMBER_TYPE_FORCES_BLK LIBGCC2_HAS_SF_MODE \ 859 LIBGCC2_HAS_DF_MODE LIBGCC2_HAS_XF_MODE LIBGCC2_HAS_TF_MODE \ 860 CLEAR_BY_PIECES_P MOVE_BY_PIECES_P SET_BY_PIECES_P \ 861 STORE_BY_PIECES_P 862 863/* Target macros only used for code built for the target, that have 864 moved to libgcc-tm.h or have never been present elsewhere. */ 865 #pragma GCC poison DECLARE_LIBRARY_RENAMES LIBGCC2_GNU_PREFIX \ 866 MD_UNWIND_SUPPORT MD_FROB_UPDATE_CONTEXT ENABLE_EXECUTE_STACK \ 867 REG_VALUE_IN_UNWIND_CONTEXT ASSUME_EXTENDED_UNWIND_CONTEXT 868 869/* Other obsolete target macros, or macros that used to be in target 870 headers and were not used, and may be obsolete or may never have 871 been used. */ 872 #pragma GCC poison INT_ASM_OP ASM_OUTPUT_EH_REGION_BEG CPP_PREDEFINES \ 873 ASM_OUTPUT_EH_REGION_END ASM_OUTPUT_LABELREF_AS_INT SMALL_STACK \ 874 DOESNT_NEED_UNWINDER EH_TABLE_LOOKUP OBJC_SELECTORS_WITHOUT_LABELS \ 875 OMIT_EH_TABLE EASY_DIV_EXPR IMPLICIT_FIX_EXPR \ 876 LONGJMP_RESTORE_FROM_STACK MAX_INT_TYPE_SIZE ASM_IDENTIFY_GCC \ 877 STDC_VALUE TRAMPOLINE_ALIGN ASM_IDENTIFY_GCC_AFTER_SOURCE \ 878 SLOW_ZERO_EXTEND SUBREG_REGNO_OFFSET DWARF_LINE_MIN_INSTR_LENGTH \ 879 TRADITIONAL_RETURN_FLOAT NO_BUILTIN_SIZE_TYPE \ 880 NO_BUILTIN_PTRDIFF_TYPE NO_BUILTIN_WCHAR_TYPE NO_BUILTIN_WINT_TYPE \ 881 BLOCK_PROFILER BLOCK_PROFILER_CODE FUNCTION_BLOCK_PROFILER \ 882 FUNCTION_BLOCK_PROFILER_EXIT MACHINE_STATE_SAVE \ 883 MACHINE_STATE_RESTORE SCCS_DIRECTIVE SECTION_ASM_OP BYTEORDER \ 884 ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL HOST_WORDS_BIG_ENDIAN \ 885 OBJC_PROLOGUE ALLOCATE_TRAMPOLINE HANDLE_PRAGMA ROUND_TYPE_SIZE \ 886 ROUND_TYPE_SIZE_UNIT CONST_SECTION_ASM_OP CRT_GET_RFIB_TEXT \ 887 DBX_LBRAC_FIRST DBX_OUTPUT_ENUM DBX_OUTPUT_SOURCE_FILENAME \ 888 DBX_WORKING_DIRECTORY INSN_CACHE_DEPTH INSN_CACHE_SIZE \ 889 INSN_CACHE_LINE_WIDTH INIT_SECTION_PREAMBLE NEED_ATEXIT ON_EXIT \ 890 EXIT_BODY OBJECT_FORMAT_ROSE MULTIBYTE_CHARS MAP_CHARACTER \ 891 LIBGCC_NEEDS_DOUBLE FINAL_PRESCAN_LABEL DEFAULT_CALLER_SAVES \ 892 LOAD_ARGS_REVERSED MAX_INTEGER_COMPUTATION_MODE \ 893 CONVERT_HARD_REGISTER_TO_SSA_P ASM_OUTPUT_MAIN_SOURCE_FILENAME \ 894 FIRST_INSN_ADDRESS TEXT_SECTION SHARED_BSS_SECTION_ASM_OP \ 895 PROMOTED_MODE EXPAND_BUILTIN_VA_END \ 896 LINKER_DOES_NOT_WORK_WITH_DWARF2 FUNCTION_ARG_KEEP_AS_REFERENCE \ 897 GIV_SORT_CRITERION MAX_LONG_TYPE_SIZE MAX_LONG_DOUBLE_TYPE_SIZE \ 898 MAX_WCHAR_TYPE_SIZE SHARED_SECTION_ASM_OP INTEGRATE_THRESHOLD \ 899 FINAL_REG_PARM_STACK_SPACE MAYBE_REG_PARM_STACK_SPACE \ 900 TRADITIONAL_PIPELINE_INTERFACE DFA_PIPELINE_INTERFACE \ 901 DBX_OUTPUT_STANDARD_TYPES BUILTIN_SETJMP_FRAME_VALUE \ 902 SUNOS4_SHARED_LIBRARIES PROMOTE_FOR_CALL_ONLY \ 903 SPACE_AFTER_L_OPTION NO_RECURSIVE_FUNCTION_CSE \ 904 DEFAULT_MAIN_RETURN TARGET_MEM_FUNCTIONS EXPAND_BUILTIN_VA_ARG \ 905 COLLECT_PARSE_FLAG DWARF2_GENERATE_TEXT_SECTION_LABEL WINNING_GDB \ 906 ASM_OUTPUT_FILENAME ASM_OUTPUT_SOURCE_LINE FILE_NAME_JOINER \ 907 GDB_INV_REF_REGPARM_STABS_LETTER DBX_MEMPARM_STABS_LETTER \ 908 PUT_SDB_SRC_FILE STABS_GCC_MARKER DBX_OUTPUT_FUNCTION_END \ 909 DBX_OUTPUT_GCC_MARKER DBX_FINISH_SYMBOL SDB_GENERATE_FAKE \ 910 NON_SAVING_SETJMP TARGET_LATE_RTL_PROLOGUE_EPILOGUE \ 911 CASE_DROPS_THROUGH TARGET_BELL TARGET_BS TARGET_CR TARGET_DIGIT0 \ 912 TARGET_ESC TARGET_FF TARGET_NEWLINE TARGET_TAB TARGET_VT \ 913 LINK_LIBGCC_SPECIAL DONT_ACCESS_GBLS_AFTER_EPILOGUE \ 914 TARGET_OPTIONS TARGET_SWITCHES EXTRA_CC_MODES FINALIZE_PIC \ 915 PREDICATE_CODES SPECIAL_MODE_PREDICATES UNALIGNED_WORD_ASM_OP \ 916 EXTRA_SECTIONS EXTRA_SECTION_FUNCTIONS READONLY_DATA_SECTION \ 917 TARGET_ASM_EXCEPTION_SECTION TARGET_ASM_EH_FRAME_SECTION \ 918 SMALL_ARG_MAX ASM_OUTPUT_SHARED_BSS ASM_OUTPUT_SHARED_COMMON \ 919 ASM_OUTPUT_SHARED_LOCAL ASM_MAKE_LABEL_LINKONCE \ 920 STACK_CHECK_PROBE_INTERVAL STACK_CHECK_PROBE_LOAD \ 921 ORDER_REGS_FOR_LOCAL_ALLOC FUNCTION_OUTGOING_VALUE \ 922 ASM_DECLARE_CONSTANT_NAME MODIFY_TARGET_NAME SWITCHES_NEED_SPACES \ 923 SWITCH_CURTAILS_COMPILATION SWITCH_TAKES_ARG WORD_SWITCH_TAKES_ARG \ 924 TARGET_OPTION_TRANSLATE_TABLE HANDLE_PRAGMA_PACK_PUSH_POP \ 925 HANDLE_SYSV_PRAGMA HANDLE_PRAGMA_WEAK CONDITIONAL_REGISTER_USAGE \ 926 FUNCTION_ARG_BOUNDARY MUST_USE_SJLJ_EXCEPTIONS US_SOFTWARE_GOFAST \ 927 USING_SVR4_H SVR4_ASM_SPEC FUNCTION_ARG FUNCTION_ARG_ADVANCE \ 928 FUNCTION_INCOMING_ARG IRA_COVER_CLASSES TARGET_VERSION \ 929 MACHINE_TYPE TARGET_HAS_TARGETCM ASM_OUTPUT_BSS \ 930 SETJMP_VIA_SAVE_AREA FORBIDDEN_INC_DEC_CLASSES \ 931 PREFERRED_OUTPUT_RELOAD_CLASS SYSTEM_INCLUDE_DIR \ 932 STANDARD_INCLUDE_DIR STANDARD_INCLUDE_COMPONENT \ 933 LINK_ELIMINATE_DUPLICATE_LDIRECTORIES MIPS_DEBUGGING_INFO \ 934 IDENT_ASM_OP ALL_COP_ADDITIONAL_REGISTER_NAMES DBX_OUTPUT_LBRAC \ 935 DBX_OUTPUT_NFUN DBX_OUTPUT_RBRAC RANGE_TEST_NON_SHORT_CIRCUIT \ 936 REAL_VALUE_TRUNCATE REVERSE_CONDEXEC_PREDICATES_P \ 937 TARGET_ALIGN_ANON_BITFIELDS TARGET_NARROW_VOLATILE_BITFIELDS \ 938 IDENT_ASM_OP UNALIGNED_SHORT_ASM_OP UNALIGNED_INT_ASM_OP \ 939 UNALIGNED_LONG_ASM_OP UNALIGNED_DOUBLE_INT_ASM_OP \ 940 USE_COMMON_FOR_ONE_ONLY IFCVT_EXTRA_FIELDS IFCVT_INIT_EXTRA_FIELDS \ 941 CASE_USE_BIT_TESTS FIXUNS_TRUNC_LIKE_FIX_TRUNC \ 942 GO_IF_MODE_DEPENDENT_ADDRESS DELAY_SLOTS_FOR_EPILOGUE \ 943 ELIGIBLE_FOR_EPILOGUE_DELAY TARGET_C99_FUNCTIONS TARGET_HAS_SINCOS \ 944 REG_CLASS_FROM_LETTER CONST_OK_FOR_LETTER_P \ 945 CONST_DOUBLE_OK_FOR_LETTER_P EXTRA_CONSTRAINT \ 946 REG_CLASS_FROM_CONSTRAINT REG_CLASS_FOR_CONSTRAINT \ 947 EXTRA_CONSTRAINT_STR EXTRA_MEMORY_CONSTRAINT \ 948 EXTRA_ADDRESS_CONSTRAINT CONST_DOUBLE_OK_FOR_CONSTRAINT_P \ 949 CALLER_SAVE_PROFITABLE LARGEST_EXPONENT_IS_NORMAL \ 950 ROUND_TOWARDS_ZERO SF_SIZE DF_SIZE XF_SIZE TF_SIZE LIBGCC2_TF_CEXT \ 951 LIBGCC2_LONG_DOUBLE_TYPE_SIZE 952 953/* Hooks that are no longer used. */ 954 #pragma GCC poison LANG_HOOKS_FUNCTION_MARK LANG_HOOKS_FUNCTION_FREE \ 955 LANG_HOOKS_MARK_TREE LANG_HOOKS_INSERT_DEFAULT_ATTRIBUTES \ 956 LANG_HOOKS_TREE_INLINING_ESTIMATE_NUM_INSNS \ 957 LANG_HOOKS_PUSHLEVEL LANG_HOOKS_SET_BLOCK \ 958 LANG_HOOKS_MAYBE_BUILD_CLEANUP LANG_HOOKS_UPDATE_DECL_AFTER_SAVING \ 959 LANG_HOOKS_POPLEVEL LANG_HOOKS_TRUTHVALUE_CONVERSION \ 960 TARGET_PROMOTE_FUNCTION_ARGS TARGET_PROMOTE_FUNCTION_RETURN \ 961 LANG_HOOKS_MISSING_ARGUMENT LANG_HOOKS_HASH_TYPES \ 962 TARGET_HANDLE_OFAST TARGET_OPTION_OPTIMIZATION \ 963 TARGET_IRA_COVER_CLASSES TARGET_HELP \ 964 TARGET_HANDLE_PRAGMA_EXTERN_PREFIX \ 965 TARGET_VECTORIZE_BUILTIN_MUL_WIDEN_EVEN \ 966 TARGET_VECTORIZE_BUILTIN_MUL_WIDEN_ODD \ 967 968/* Arrays that were deleted in favor of a functional interface. */ 969 #pragma GCC poison built_in_decls implicit_built_in_decls 970 971/* Hooks into libgcc2. */ 972 #pragma GCC poison LIBGCC2_DOUBLE_TYPE_SIZE LIBGCC2_WORDS_BIG_ENDIAN \ 973 LIBGCC2_FLOAT_WORDS_BIG_ENDIAN 974 975/* Miscellaneous macros that are no longer used. */ 976 #pragma GCC poison USE_MAPPED_LOCATION GET_ENVIRONMENT 977 978/* Libiberty macros that are no longer used in GCC. */ 979#undef ANSI_PROTOTYPES 980#undef PTR_CONST 981#undef LONG_DOUBLE 982#undef VPARAMS 983#undef VA_OPEN 984#undef VA_FIXEDARG 985#undef VA_CLOSE 986#undef VA_START 987 #pragma GCC poison ANSI_PROTOTYPES PTR_CONST LONG_DOUBLE VPARAMS VA_OPEN \ 988 VA_FIXEDARG VA_CLOSE VA_START 989#endif /* IN_GCC */ 990 991/* Front ends should never have to include middle-end headers. Enforce 992 this by poisoning the header double-include protection defines. */ 993#ifdef IN_GCC_FRONTEND 994#pragma GCC poison GCC_RTL_H GCC_EXCEPT_H GCC_EXPR_H 995#endif 996 997/* Note: not all uses of the `index' token (e.g. variable names and 998 structure members) have been eliminated. */ 999#undef bcopy 1000#undef bzero 1001#undef bcmp 1002#undef rindex 1003 #pragma GCC poison bcopy bzero bcmp rindex 1004 1005#endif /* GCC >= 3.0 */ 1006 1007/* This macro allows casting away const-ness to pass -Wcast-qual 1008 warnings. DO NOT USE THIS UNLESS YOU REALLY HAVE TO! It should 1009 only be used in certain specific cases. One valid case is where 1010 the C standard definitions or prototypes force you to. E.g. if you 1011 need to free a const object, or if you pass a const string to 1012 execv, et al. Another valid use would be in an allocation function 1013 that creates const objects that need to be initialized. In some 1014 cases we have non-const functions that return the argument 1015 (e.g. next_nonnote_insn). Rather than create const shadow 1016 functions, we can cast away const-ness in calling these interfaces 1017 if we're careful to verify that the called function does indeed not 1018 modify its argument and the return value is only used in a const 1019 context. (This can be somewhat dangerous as these assumptions can 1020 change after the fact). Beyond these uses, most other cases of 1021 using this macro should be viewed with extreme caution. */ 1022 1023#ifdef __cplusplus 1024#define CONST_CAST2(TOTYPE,FROMTYPE,X) (const_cast<TOTYPE> (X)) 1025#else 1026#if defined(__GNUC__) && GCC_VERSION > 4000 1027/* GCC 4.0.x has a bug where it may ICE on this expression, 1028 so does GCC 3.4.x (PR17436). */ 1029#define CONST_CAST2(TOTYPE,FROMTYPE,X) ((__extension__(union {FROMTYPE _q; TOTYPE _nq;})(X))._nq) 1030#elif defined(__GNUC__) 1031static inline char * 1032helper_const_non_const_cast (const char *p) 1033{ 1034 union { 1035 const char *const_c; 1036 char *c; 1037 } val; 1038 val.const_c = p; 1039 return val.c; 1040} 1041 1042#define CONST_CAST2(TOTYPE,FROMTYPE,X) \ 1043 ((TOTYPE) helper_const_non_const_cast ((const char *) (FROMTYPE) (X))) 1044#else 1045#define CONST_CAST2(TOTYPE,FROMTYPE,X) ((TOTYPE)(FROMTYPE)(X)) 1046#endif 1047#endif 1048#define CONST_CAST(TYPE,X) CONST_CAST2 (TYPE, const TYPE, (X)) 1049#define CONST_CAST_TREE(X) CONST_CAST (union tree_node *, (X)) 1050#define CONST_CAST_RTX(X) CONST_CAST (struct rtx_def *, (X)) 1051#define CONST_CAST_RTX_INSN(X) CONST_CAST (struct rtx_insn *, (X)) 1052#define CONST_CAST_BB(X) CONST_CAST (struct basic_block_def *, (X)) 1053#define CONST_CAST_GIMPLE(X) CONST_CAST (struct gimple_statement_base *, (X)) 1054 1055/* Activate certain diagnostics as warnings (not errors via the 1056 -Werror flag). */ 1057#if GCC_VERSION >= 4003 1058/* If asserts are disabled, activate -Wuninitialized as a warning (not 1059 an error/-Werror). */ 1060#ifndef ENABLE_ASSERT_CHECKING 1061#pragma GCC diagnostic warning "-Wuninitialized" 1062#endif 1063#endif 1064 1065#ifdef ENABLE_VALGRIND_ANNOTATIONS 1066# ifdef HAVE_VALGRIND_MEMCHECK_H 1067# include <valgrind/memcheck.h> 1068# elif defined HAVE_MEMCHECK_H 1069# include <memcheck.h> 1070# else 1071# include <valgrind.h> 1072# endif 1073/* Compatibility macros to let valgrind 3.1 work. */ 1074# ifndef VALGRIND_MAKE_MEM_NOACCESS 1075# define VALGRIND_MAKE_MEM_NOACCESS VALGRIND_MAKE_NOACCESS 1076# endif 1077# ifndef VALGRIND_MAKE_MEM_DEFINED 1078# define VALGRIND_MAKE_MEM_DEFINED VALGRIND_MAKE_READABLE 1079# endif 1080# ifndef VALGRIND_MAKE_MEM_UNDEFINED 1081# define VALGRIND_MAKE_MEM_UNDEFINED VALGRIND_MAKE_WRITABLE 1082# endif 1083#else 1084/* Avoid #ifdef:s when we can help it. */ 1085#define VALGRIND_DISCARD(x) 1086#define VALGRIND_MALLOCLIKE_BLOCK(w,x,y,z) 1087#define VALGRIND_FREELIKE_BLOCK(x,y) 1088#endif 1089 1090/* In LTO -fwhole-program build we still want to keep the debug functions available 1091 for debugger. Mark them as used to prevent removal. */ 1092#if (GCC_VERSION > 4000) 1093#define DEBUG_FUNCTION __attribute__ ((__used__)) 1094#define DEBUG_VARIABLE __attribute__ ((__used__)) 1095#else 1096#define DEBUG_FUNCTION 1097#define DEBUG_VARIABLE 1098#endif 1099 1100/* General macro to extract bit Y of X. */ 1101#define TEST_BIT(X, Y) (((X) >> (Y)) & 1) 1102 1103/* Get definitions of HOST_WIDE_INT. */ 1104#include "hwint.h" 1105 1106#endif /* ! GCC_SYSTEM_H */ 1107