gcc/system.h

   1 /* Get common system includes and various definitions and declarations based
   2    on autoconf macros.
   3    Copyright (C) 1998, 1999, 2000, 2001, 2002 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 2, 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 COPYING.  If not, write to the Free
  19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
  20 02111-1307, USA.  */
  21
  22
  23 #ifndef GCC_SYSTEM_H
  24 #define GCC_SYSTEM_H
  25
  26 /* We must include stdarg.h/varargs.h before stdio.h.  */
  27 #ifdef ANSI_PROTOTYPES
  28 #include <stdarg.h>
  29 #else
  30 #include <varargs.h>
  31 #endif
  32
  33 #ifndef va_copy
  34 # ifdef __va_copy
  35 #   define va_copy(d,s)  __va_copy((d),(s))
  36 # else
  37 #   define va_copy(d,s)  ((d) = (s))
  38 # endif
  39 #endif
  40
  41 #ifdef HAVE_STDDEF_H
  42 # include <stddef.h>
  43 #endif
  44
  45 #include <stdio.h>
  46
  47 /* Define a generic NULL if one hasn't already been defined.  */
  48 #ifndef NULL
  49 #define NULL 0
  50 #endif
  51
  52 /* The compiler is not a multi-threaded application and therefore we
  53    do not have to use the locking functions.  In fact, using the locking
  54    functions can cause the compiler to be significantly slower under
  55    I/O bound conditions (such as -g -O0 on very large source files).
  56
  57    HAVE_DECL_PUTC_UNLOCKED actually indicates whether or not the stdio
  58    code is multi-thread safe by default.  If it is set to 0, then do
  59    not worry about using the _unlocked functions.
  60
  61    fputs_unlocked, fwrite_unlocked, and fprintf_unlocked are
  62    extensions and need to be prototyped by hand (since we do not
  63    define _GNU_SOURCE).  */
  64
  65 #if defined HAVE_DECL_PUTC_UNLOCKED && HAVE_DECL_PUTC_UNLOCKED
  66
  67 # ifdef HAVE_PUTC_UNLOCKED
  68 #  undef putc
  69 #  define putc(C, Stream) putc_unlocked (C, Stream)
  70 # endif
  71 # ifdef HAVE_FPUTC_UNLOCKED
  72 #  undef fputc
  73 #  define fputc(C, Stream) fputc_unlocked (C, Stream)
  74 # endif
  75
  76 # ifdef HAVE_FPUTS_UNLOCKED
  77 #  undef fputs
  78 #  define fputs(String, Stream) fputs_unlocked (String, Stream)
  79 #  if defined (HAVE_DECL_FPUTS_UNLOCKED) && !HAVE_DECL_FPUTS_UNLOCKED
  80 extern int fputs_unlocked PARAMS ((const char *, FILE *));
  81 #  endif
  82 # endif
  83 # ifdef HAVE_FWRITE_UNLOCKED
  84 #  undef fwrite
  85 #  define fwrite(Ptr, Size, N, Stream) fwrite_unlocked (Ptr, Size, N, Stream)
  86 #  if defined (HAVE_DECL_FWRITE_UNLOCKED) && !HAVE_DECL_FWRITE_UNLOCKED
  87 extern int fwrite_unlocked PARAMS ((const PTR, size_t, size_t, FILE *));
  88 #  endif
  89 # endif
  90 # ifdef HAVE_FPRINTF_UNLOCKED
  91 #  undef fprintf
  92 /* We can't use a function-like macro here because we don't know if
  93    we have varargs macros.  */
  94 #  define fprintf fprintf_unlocked
  95 #  if defined (HAVE_DECL_FPRINTF_UNLOCKED) && !HAVE_DECL_FPRINTF_UNLOCKED
  96 extern int fprintf_unlocked PARAMS ((FILE *, const char *, ...));
  97 #  endif
  98 # endif
  99
 100 #endif
 101
 102 /* There are an extraordinary number of issues with <ctype.h>.
 103    The last straw is that it varies with the locale.  Use libiberty's
 104    replacement instead.  */
 105 #include <safe-ctype.h>
 106
 107 #include <sys/types.h>
 108
 109 #include <errno.h>
 110
 111 #if !defined (errno) && defined (HAVE_DECL_ERRNO) && !HAVE_DECL_ERRNO
 112 extern int errno;
 113 #endif
 114
 115 #ifdef STRING_WITH_STRINGS
 116 # include <string.h>
 117 # include <strings.h>
 118 #else
 119 # ifdef HAVE_STRING_H
 120 #  include <string.h>
 121 # else
 122 #  ifdef HAVE_STRINGS_H
 123 #   include <strings.h>
 124 #  endif
 125 # endif
 126 #endif
 127
 128 #ifdef HAVE_STDLIB_H
 129 # include <stdlib.h>
 130 #endif
 131
 132 /* If we don't have an overriding definition, set SUCCESS_EXIT_CODE and
 133    FATAL_EXIT_CODE to EXIT_SUCCESS and EXIT_FAILURE respectively,
 134    or 0 and 1 if those macros are not defined.  */
 135 #ifndef SUCCESS_EXIT_CODE
 136 # ifdef EXIT_SUCCESS
 137 #  define SUCCESS_EXIT_CODE EXIT_SUCCESS
 138 # else
 139 #  define SUCCESS_EXIT_CODE 0
 140 # endif
 141 #endif
 142
 143 #ifndef FATAL_EXIT_CODE
 144 # ifdef EXIT_FAILURE
 145 #  define FATAL_EXIT_CODE EXIT_FAILURE
 146 # else
 147 #  define FATAL_EXIT_CODE 1
 148 # endif
 149 #endif
 150
 151 #ifdef HAVE_UNISTD_H
 152 # include <unistd.h>
 153 #endif
 154
 155 #ifdef HAVE_SYS_PARAM_H
 156 # include <sys/param.h>
 157 /* We use this identifier later and it appears in some vendor param.h's.  */
 158 # undef PREFETCH
 159 #endif
 160
 161 #if HAVE_LIMITS_H
 162 # include <limits.h>
 163 #endif
 164
 165 /* Get definitions of HOST_WIDE_INT and HOST_WIDEST_INT.  */
 166 #include "hwint.h"
 167
 168 /* A macro to determine whether a VALUE lies inclusively within a
 169    certain range without evaluating the VALUE more than once.  This
 170    macro won't warn if the VALUE is unsigned and the LOWER bound is
 171    zero, as it would e.g. with "VALUE >= 0 && ...".  Note the LOWER
 172    bound *is* evaluated twice, and LOWER must not be greater than
 173    UPPER.  However the bounds themselves can be either positive or
 174    negative.  */
 175 #define IN_RANGE(VALUE, LOWER, UPPER) \
 176   ((unsigned HOST_WIDE_INT) ((VALUE) - (LOWER)) <= ((UPPER) - (LOWER)))
 177
 178 /* Infrastructure for defining missing _MAX and _MIN macros.  Note that
 179    macros defined with these cannot be used in #if.  */
 180
 181 /* The extra casts work around common compiler bugs.  */
 182 #define INTTYPE_SIGNED(t) (! ((t) 0 < (t) -1))
 183 /* The outer cast is needed to work around a bug in Cray C 5.0.3.0.
 184    It is necessary at least when t == time_t.  */
 185 #define INTTYPE_MINIMUM(t) ((t) (INTTYPE_SIGNED (t) \
 186                              ? ~ (t) 0 << (sizeof(t) * CHAR_BIT - 1) : (t) 0))
 187 #define INTTYPE_MAXIMUM(t) ((t) (~ (t) 0 - INTTYPE_MINIMUM (t)))
 188
 189 /* Use that infrastructure to provide a few constants.  */
 190 #ifndef UCHAR_MAX
 191 # define UCHAR_MAX INTTYPE_MAXIMUM (unsigned char)
 192 #endif
 193
 194 #ifdef TIME_WITH_SYS_TIME
 195 # include <sys/time.h>
 196 # include <time.h>
 197 #else
 198 # if HAVE_SYS_TIME_H
 199 #  include <sys/time.h>
 200 # else
 201 #  ifdef HAVE_TIME_H
 202 #   include <time.h>
 203 #  endif
 204 # endif
 205 #endif
 206
 207 #ifdef HAVE_FCNTL_H
 208 # include <fcntl.h>
 209 #else
 210 # ifdef HAVE_SYS_FILE_H
 211 #  include <sys/file.h>
 212 # endif
 213 #endif
 214
 215 #ifndef SEEK_SET
 216 # define SEEK_SET 0
 217 # define SEEK_CUR 1
 218 # define SEEK_END 2
 219 #endif
 220 #ifndef F_OK
 221 # define F_OK 0
 222 # define X_OK 1
 223 # define W_OK 2
 224 # define R_OK 4
 225 #endif
 226 #ifndef O_RDONLY
 227 # define O_RDONLY 0
 228 #endif
 229 #ifndef O_WRONLY
 230 # define O_WRONLY 1
 231 #endif
 232
 233 /* Some systems define these in, e.g., param.h.  We undefine these names
 234    here to avoid the warnings.  We prefer to use our definitions since we
 235    know they are correct.  */
 236
 237 #undef MIN
 238 #undef MAX
 239 #define MIN(X,Y) ((X) < (Y) ? (X) : (Y))
 240 #define MAX(X,Y) ((X) > (Y) ? (X) : (Y))
 241
 242 /* Returns the least number N such that N * Y >= X.  */
 243 #define CEIL(x,y) (((x) + (y) - 1) / (y))
 244
 245 #ifdef HAVE_SYS_WAIT_H
 246 #include <sys/wait.h>
 247 #endif
 248
 249 #ifndef WIFSIGNALED
 250 #define WIFSIGNALED(S) (((S) & 0xff) != 0 && ((S) & 0xff) != 0x7f)
 251 #endif
 252 #ifndef WTERMSIG
 253 #define WTERMSIG(S) ((S) & 0x7f)
 254 #endif
 255 #ifndef WIFEXITED
 256 #define WIFEXITED(S) (((S) & 0xff) == 0)
 257 #endif
 258 #ifndef WEXITSTATUS
 259 #define WEXITSTATUS(S) (((S) & 0xff00) >> 8)
 260 #endif
 261 #ifndef WSTOPSIG
 262 #define WSTOPSIG WEXITSTATUS
 263 #endif
 264
 265 /* The HAVE_DECL_* macros are three-state, undefined, 0 or 1.  If they
 266    are defined to 0 then we must provide the relevant declaration
 267    here.  These checks will be in the undefined state while configure
 268    is running so be careful to test "defined (HAVE_DECL_*)".  */
 269
 270 #if defined (HAVE_DECL_ATOF) && !HAVE_DECL_ATOF
 271 extern double atof PARAMS ((const char *));
 272 #endif
 273
 274 #if defined (HAVE_DECL_ATOL) && !HAVE_DECL_ATOL
 275 extern long atol PARAMS ((const char *));
 276 #endif
 277
 278 #if defined (HAVE_DECL_FREE) && !HAVE_DECL_FREE
 279 extern void free PARAMS ((PTR));
 280 #endif
 281
 282 #if defined (HAVE_DECL_GETCWD) && !HAVE_DECL_GETCWD
 283 extern char *getcwd PARAMS ((char *, size_t));
 284 #endif
 285
 286 #if defined (HAVE_DECL_GETENV) && !HAVE_DECL_GETENV
 287 extern char *getenv PARAMS ((const char *));
 288 #endif
 289
 290 #if defined (HAVE_DECL_GETOPT) && !HAVE_DECL_GETOPT
 291 extern int getopt PARAMS ((int, char * const *, const char *));
 292 #endif
 293
 294 #if defined (HAVE_DECL_GETWD) && !HAVE_DECL_GETWD
 295 extern char *getwd PARAMS ((char *));
 296 #endif
 297
 298 #if defined (HAVE_DECL_SBRK) && !HAVE_DECL_SBRK
 299 extern PTR sbrk PARAMS ((int));
 300 #endif
 301
 302 #if defined (HAVE_DECL_STRSTR) && !HAVE_DECL_STRSTR
 303 extern char *strstr PARAMS ((const char *, const char *));
 304 #endif
 305
 306 #ifdef HAVE_MALLOC_H
 307 #include <malloc.h>
 308 #endif
 309
 310 #if defined (HAVE_DECL_MALLOC) && !HAVE_DECL_MALLOC
 311 extern PTR malloc PARAMS ((size_t));
 312 #endif
 313
 314 #if defined (HAVE_DECL_CALLOC) && !HAVE_DECL_CALLOC
 315 extern PTR calloc PARAMS ((size_t, size_t));
 316 #endif
 317
 318 #if defined (HAVE_DECL_REALLOC) && !HAVE_DECL_REALLOC
 319 extern PTR realloc PARAMS ((PTR, size_t));
 320 #endif
 321
 322 /* If the system doesn't provide strsignal, we get it defined in
 323    libiberty but no declaration is supplied.  */
 324 #ifndef HAVE_STRSIGNAL
 325 # ifndef strsignal
 326 extern const char *strsignal PARAMS ((int));
 327 # endif
 328 #endif
 329
 330 #ifdef HAVE_GETRLIMIT
 331 # if defined (HAVE_DECL_GETRLIMIT) && !HAVE_DECL_GETRLIMIT
 332 #  ifndef getrlimit
 333 #   ifdef ANSI_PROTOTYPES
 334 struct rlimit;
 335 #   endif
 336 extern int getrlimit PARAMS ((int, struct rlimit *));
 337 #  endif
 338 # endif
 339 #endif
 340
 341 #ifdef HAVE_SETRLIMIT
 342 # if defined (HAVE_DECL_SETRLIMIT) && !HAVE_DECL_SETRLIMIT
 343 #  ifndef setrlimit
 344 #   ifdef ANSI_PROTOTYPES
 345 struct rlimit;
 346 #   endif
 347 extern int setrlimit PARAMS ((int, const struct rlimit *));
 348 #  endif
 349 # endif
 350 #endif
 351
 352 /* HAVE_VOLATILE only refers to the stage1 compiler.  We also check
 353    __STDC__ and assume gcc sets it and has volatile in stage >=2.  */
 354 #if !defined(HAVE_VOLATILE) && !defined(__STDC__) && !defined(volatile)
 355 #define volatile
 356 #endif
 357
 358 #if defined (HAVE_DECL_ABORT) && !HAVE_DECL_ABORT
 359 extern void abort PARAMS ((void));
 360 #endif
 361
 362 /* 1 if we have C99 designated initializers.  */
 363 #if !defined(HAVE_DESIGNATED_INITIALIZERS)
 364 #define HAVE_DESIGNATED_INITIALIZERS \
 365   ((GCC_VERSION >= 2007) || (__STDC_VERSION__ >= 199901L))
 366 #endif
 367
 368 /* 1 if we have _Bool.  */
 369 #ifndef HAVE__BOOL
 370 # define HAVE__BOOL \
 371    ((GCC_VERSION >= 3000) || (__STDC_VERSION__ >= 199901L))
 372 #endif
 373
 374
 375 #if HAVE_SYS_STAT_H
 376 # include <sys/stat.h>
 377 #endif
 378
 379 /* Test if something is a normal file.  */
 380 #ifndef S_ISREG
 381 #define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
 382 #endif
 383
 384 /* Test if something is a directory.  */
 385 #ifndef S_ISDIR
 386 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
 387 #endif
 388
 389 /* Test if something is a character special file.  */
 390 #ifndef S_ISCHR
 391 #define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR)
 392 #endif
 393
 394 /* Test if something is a block special file.  */
 395 #ifndef S_ISBLK
 396 #define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK)
 397 #endif
 398
 399 /* Test if something is a socket.  */
 400 #ifndef S_ISSOCK
 401 # ifdef S_IFSOCK
 402 #   define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK)
 403 # else
 404 #   define S_ISSOCK(m) 0
 405 # endif
 406 #endif
 407
 408 /* Test if something is a FIFO.  */
 409 #ifndef S_ISFIFO
 410 # ifdef S_IFIFO
 411 #  define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO)
 412 # else
 413 #  define S_ISFIFO(m) 0
 414 # endif
 415 #endif
 416
 417 /* Approximate O_NONBLOCK.  */
 418 #ifndef O_NONBLOCK
 419 #define O_NONBLOCK O_NDELAY
 420 #endif
 421
 422 /* Approximate O_NOCTTY.  */
 423 #ifndef O_NOCTTY
 424 #define O_NOCTTY 0
 425 #endif
 426
 427 /* Define well known filenos if the system does not define them.  */
 428 #ifndef STDIN_FILENO
 429 # define STDIN_FILENO   0
 430 #endif
 431 #ifndef STDOUT_FILENO
 432 # define STDOUT_FILENO  1
 433 #endif
 434 #ifndef STDERR_FILENO
 435 # define STDERR_FILENO  2
 436 #endif
 437
 438 /* Some systems have mkdir that takes a single argument.  */
 439 #ifdef MKDIR_TAKES_ONE_ARG
 440 # define mkdir(a,b) mkdir(a)
 441 #endif
 442
 443 /* Provide a way to print an address via printf.  */
 444 #ifndef HOST_PTR_PRINTF
 445 # ifdef HAVE_PRINTF_PTR
 446 #  define HOST_PTR_PRINTF "%p"
 447 # else
 448 #  define HOST_PTR_PRINTF \
 449     (sizeof (int) == sizeof (char *) ? "%x" \
 450      : sizeof (long) == sizeof (char *) ? "%lx" : "%llx")
 451 # endif
 452 #endif /* ! HOST_PTR_PRINTF */
 453
 454 /* By default, colon separates directories in a path.  */
 455 #ifndef PATH_SEPARATOR
 456 #define PATH_SEPARATOR ':'
 457 #endif
 458
 459 #ifndef DIR_SEPARATOR
 460 #define DIR_SEPARATOR '/'
 461 #endif
 462
 463 /* Define IS_DIR_SEPARATOR.  */
 464 #ifndef DIR_SEPARATOR_2
 465 # define IS_DIR_SEPARATOR(CH) ((CH) == DIR_SEPARATOR)
 466 #else /* DIR_SEPARATOR_2 */
 467 # define IS_DIR_SEPARATOR(CH) \
 468         (((CH) == DIR_SEPARATOR) || ((CH) == DIR_SEPARATOR_2))
 469 #endif /* DIR_SEPARATOR_2 */
 470
 471 /* Say how to test for an absolute pathname.  On Unix systems, this is if
 472    it starts with a leading slash or a '$', the latter meaning the value of
 473    an environment variable is to be used.  On machine with DOS-based
 474    file systems, it is also absolute if it starts with a drive identifier.  */
 475 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
 476 #define IS_ABSOLUTE_PATHNAME(STR) \
 477   (IS_DIR_SEPARATOR ((STR)[0]) || (STR)[0] == '$' \
 478    || ((STR)[0] != '\0' && (STR)[1] == ':' && IS_DIR_SEPARATOR ((STR)[2])))
 479 #else
 480 #define IS_ABSOLUTE_PATHNAME(STR) \
 481   (IS_DIR_SEPARATOR ((STR)[0]) || (STR)[0] == '$')
 482 #endif
 483
 484 /* Get libiberty declarations.  */
 485 #include "libiberty.h"
 486 #include "symcat.h"
 487
 488 /* Provide a default for the HOST_BIT_BUCKET.
 489    This suffices for POSIX-like hosts.  */
 490
 491 #ifndef HOST_BIT_BUCKET
 492 #define HOST_BIT_BUCKET "/dev/null"
 493 #endif
 494
 495 /* Be conservative and only use enum bitfields with GCC.
 496    FIXME: provide a complete autoconf test for buggy enum bitfields.  */
 497
 498 #if (GCC_VERSION > 2000)
 499 #define ENUM_BITFIELD(TYPE) enum TYPE
 500 #else
 501 #define ENUM_BITFIELD(TYPE) unsigned int
 502 #endif
 503
 504 #ifndef offsetof
 505 #define offsetof(TYPE, MEMBER)  ((size_t) &((TYPE *) 0)->MEMBER)
 506 #endif
 507
 508 /* Traditional C cannot initialize union members of structs.  Provide
 509    a macro which expands appropriately to handle it.  This only works
 510    if you intend to initialize the union member to zero since it relies
 511    on default initialization to zero in the traditional C case.  */
 512 #ifdef __STDC__
 513 #define UNION_INIT_ZERO , {0}
 514 #else
 515 #define UNION_INIT_ZERO
 516 #endif
 517
 518 /* Various error reporting routines want to use __FUNCTION__.  */
 519 #if (GCC_VERSION < 2007)
 520 #ifndef __FUNCTION__
 521 #define __FUNCTION__ "?"
 522 #endif /* ! __FUNCTION__ */
 523 #endif
 524
 525 /* __builtin_expect(A, B) evaluates to A, but notifies the compiler that
 526    the most likely value of A is B.  This feature was added at some point
 527    between 2.95 and 3.0.  Let's use 3.0 as the lower bound for now.  */
 528 #if (GCC_VERSION < 3000)
 529 #define __builtin_expect(a, b) (a)
 530 #endif
 531
 532 /* Provide some sort of boolean type.  We use stdbool.h if it's
 533   available.  This must be after all inclusion of system headers,
 534   as some of them will mess us up.  */
 535 #undef bool
 536 #undef true
 537 #undef false
 538 #undef TRUE
 539 #undef FALSE
 540
 541 #ifdef HAVE_STDBOOL_H
 542 # include <stdbool.h>
 543 #else
 544 # if !HAVE__BOOL
 545 typedef char _Bool;
 546 # endif
 547 # define bool _Bool
 548 # define true 1
 549 # define false 0
 550 #endif
 551
 552 #define TRUE true
 553 #define FALSE false
 554
 555 /* As the last action in this file, we poison the identifiers that
 556    shouldn't be used.  Note, luckily gcc-3.0's token-based integrated
 557    preprocessor won't trip on poisoned identifiers that arrive from
 558    the expansion of macros.  E.g. #define strrchr rindex, won't error
 559    if rindex is poisoned after this directive is issued and later on
 560    strrchr is called.
 561
 562    Note: We define bypass macros for the few cases where we really
 563    want to use the libc memory allocation routines.  Otherwise we
 564    insist you use the "x" versions from libiberty.  */
 565
 566 #define really_call_malloc malloc
 567 #define really_call_calloc calloc
 568 #define really_call_realloc realloc
 569
 570 #if defined(FLEX_SCANNER) || defined(YYBISON)
 571 /* Flex and bison use malloc and realloc.  Yuk.  Note that this means
 572    really_call_* cannot be used in a .l or .y file. */
 573 #define malloc xmalloc
 574 #define realloc xrealloc
 575 #endif
 576
 577 #if (GCC_VERSION >= 3000)
 578
 579 /* Note autoconf checks for prototype declarations and includes
 580    system.h while doing so.  Only poison these tokens if actually
 581    compiling gcc, so that the autoconf declaration tests for malloc
 582    etc don't spuriously fail.  */
 583 #ifdef IN_GCC
 584 #undef calloc
 585 #undef strdup
 586  #pragma GCC poison calloc strdup
 587
 588 #if !defined(FLEX_SCANNER) && !defined(YYBISON)
 589 #undef malloc
 590 #undef realloc
 591  #pragma GCC poison malloc realloc
 592 #endif
 593
 594 /* Old target macros that have moved to the target hooks structure.  */
 595  #pragma GCC poison ASM_OPEN_PAREN ASM_CLOSE_PAREN                      \
 596         FUNCTION_PROLOGUE FUNCTION_EPILOGUE                             \
 597         FUNCTION_END_PROLOGUE FUNCTION_BEGIN_EPILOGUE                   \
 598         DECL_MACHINE_ATTRIBUTES COMP_TYPE_ATTRIBUTES INSERT_ATTRIBUTES  \
 599         VALID_MACHINE_DECL_ATTRIBUTE VALID_MACHINE_TYPE_ATTRIBUTE       \
 600         SET_DEFAULT_TYPE_ATTRIBUTES SET_DEFAULT_DECL_ATTRIBUTES         \
 601         MERGE_MACHINE_TYPE_ATTRIBUTES MERGE_MACHINE_DECL_ATTRIBUTES     \
 602         MD_INIT_BUILTINS MD_EXPAND_BUILTIN ASM_OUTPUT_CONSTRUCTOR       \
 603         ASM_OUTPUT_DESTRUCTOR SIGNED_CHAR_SPEC MAX_CHAR_TYPE_SIZE       \
 604         WCHAR_UNSIGNED UNIQUE_SECTION SELECT_SECTION SELECT_RTX_SECTION \
 605         ENCODE_SECTION_INFO STRIP_NAME_ENCODING ASM_GLOBALIZE_LABEL     \
 606         ASM_OUTPUT_MI_THUNK
 607
 608 /* Other obsolete target macros, or macros that used to be in target
 609    headers and were not used, and may be obsolete or may never have
 610    been used.  */
 611  #pragma GCC poison INT_ASM_OP ASM_OUTPUT_EH_REGION_BEG                    \
 612         ASM_OUTPUT_EH_REGION_END ASM_OUTPUT_LABELREF_AS_INT                \
 613         DOESNT_NEED_UNWINDER EH_TABLE_LOOKUP OBJC_SELECTORS_WITHOUT_LABELS \
 614         OMIT_EH_TABLE EASY_DIV_EXPR IMPLICIT_FIX_EXPR                      \
 615         LONGJMP_RESTORE_FROM_STACK MAX_INT_TYPE_SIZE ASM_IDENTIFY_GCC      \
 616         STDC_VALUE TRAMPOLINE_ALIGN ASM_IDENTIFY_GCC_AFTER_SOURCE          \
 617         SLOW_ZERO_EXTEND SUBREG_REGNO_OFFSET DWARF_LINE_MIN_INSTR_LENGTH   \
 618         TRADITIONAL_RETURN_FLOAT NO_BUILTIN_SIZE_TYPE                      \
 619         NO_BUILTIN_PTRDIFF_TYPE NO_BUILTIN_WCHAR_TYPE NO_BUILTIN_WINT_TYPE \
 620         BLOCK_PROFILER BLOCK_PROFILER_CODE FUNCTION_BLOCK_PROFILER         \
 621         FUNCTION_BLOCK_PROFILER_EXIT MACHINE_STATE_SAVE                    \
 622         MACHINE_STATE_RESTORE SCCS_DIRECTIVE SECTION_ASM_OP                \
 623         ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL ASM_OUTPUT_INTERNAL_LABEL
 624
 625 /* Hooks that are no longer used.  */
 626  #pragma GCC poison LANG_HOOKS_FUNCTION_MARK LANG_HOOKS_FUNCTION_FREE   \
 627         LANG_HOOKS_MARK_TREE
 628
 629 #endif /* IN_GCC */
 630
 631 /* Note: not all uses of the `index' token (e.g. variable names and
 632    structure members) have been eliminated.  */
 633 #undef bcopy
 634 #undef bzero
 635 #undef bcmp
 636 #undef rindex
 637  #pragma GCC poison bcopy bzero bcmp rindex
 638
 639 #endif /* GCC >= 3.0 */
 640
 641 #endif /* ! GCC_SYSTEM_H */