gcc/system.h

   1 /* Get common system includes and various definitions and declarations based
   2    on autoconf macros.
   3    Copyright (C) 1998-2020 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 /* 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
 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 /* Include <string> before "safe-ctype.h" to avoid GCC poisoning
 198    the ctype macros through safe-ctype.h */
 199
 200 #ifdef __cplusplus
 201 #ifdef INCLUDE_STRING
 202 # include <string>
 203 #endif
 204 #endif
 205
 206 /* There are an extraordinary number of issues with <ctype.h>.
 207    The last straw is that it varies with the locale.  Use libiberty's
 208    replacement instead.  */
 209 #include "safe-ctype.h"
 210
 211 #include <sys/types.h>
 212
 213 #include <errno.h>
 214
 215 #if !defined (errno) && defined (HAVE_DECL_ERRNO) && !HAVE_DECL_ERRNO
 216 extern int errno;
 217 #endif
 218
 219 #ifdef __cplusplus
 220 #if defined (INCLUDE_ALGORITHM) || !defined (HAVE_SWAP_IN_UTILITY)
 221 # include <algorithm>
 222 #endif
 223 #ifdef INCLUDE_LIST
 224 # include <list>
 225 #endif
 226 #ifdef INCLUDE_MAP
 227 # include <map>
 228 #endif
 229 #ifdef INCLUDE_SET
 230 # include <set>
 231 #endif
 232 #ifdef INCLUDE_VECTOR
 233 # include <vector>
 234 #endif
 235 # include <cstring>
 236 # include <new>
 237 # include <utility>
 238 # include <type_traits>
 239 #endif
 240
 241 /* Some of glibc's string inlines cause warnings.  Plus we'd rather
 242    rely on (and therefore test) GCC's string builtins.  */
 243 #define __NO_STRING_INLINES
 244
 245 #ifdef STRING_WITH_STRINGS
 246 # include <string.h>
 247 # include <strings.h>
 248 #else
 249 # ifdef HAVE_STRING_H
 250 #  include <string.h>
 251 # else
 252 #  ifdef HAVE_STRINGS_H
 253 #   include <strings.h>
 254 #  endif
 255 # endif
 256 #endif
 257
 258 #ifdef HAVE_STDLIB_H
 259 # include <stdlib.h>
 260 #endif
 261
 262 /* When compiling C++ we need to include <cstdlib> as well as <stdlib.h> so
 263    that it is processed before we poison "malloc"; otherwise, if a source
 264    file uses a standard library header that includes <cstdlib>, we will get
 265    an error about 'using std::malloc'.  */
 266 #ifdef __cplusplus
 267 #include <cstdlib>
 268 #endif
 269
 270 /* Undef vec_free from AIX stdlib.h header which conflicts with vec.h.  */
 271 #undef vec_free
 272
 273 /* If we don't have an overriding definition, set SUCCESS_EXIT_CODE and
 274    FATAL_EXIT_CODE to EXIT_SUCCESS and EXIT_FAILURE respectively,
 275    or 0 and 1 if those macros are not defined.  */
 276 #ifndef SUCCESS_EXIT_CODE
 277 # ifdef EXIT_SUCCESS
 278 #  define SUCCESS_EXIT_CODE EXIT_SUCCESS
 279 # else
 280 #  define SUCCESS_EXIT_CODE 0
 281 # endif
 282 #endif
 283
 284 #ifndef FATAL_EXIT_CODE
 285 # ifdef EXIT_FAILURE
 286 #  define FATAL_EXIT_CODE EXIT_FAILURE
 287 # else
 288 #  define FATAL_EXIT_CODE 1
 289 # endif
 290 #endif
 291
 292 #define ICE_EXIT_CODE 4
 293
 294 #ifdef HAVE_UNISTD_H
 295 # include <unistd.h>
 296 #endif
 297
 298 #ifdef HAVE_SYS_PARAM_H
 299 # include <sys/param.h>
 300 /* We use these identifiers later and they appear in some vendor param.h's.  */
 301 # undef PREFETCH
 302 # undef m_slot
 303 #endif
 304
 305 #if HAVE_LIMITS_H
 306 # include <limits.h>
 307 #endif
 308
 309 /* A macro to determine whether a VALUE lies inclusively within a
 310    certain range without evaluating the VALUE more than once.  This
 311    macro won't warn if the VALUE is unsigned and the LOWER bound is
 312    zero, as it would e.g. with "VALUE >= 0 && ...".  Note the LOWER
 313    bound *is* evaluated twice, and LOWER must not be greater than
 314    UPPER.  However the bounds themselves can be either positive or
 315    negative.  */
 316 #define IN_RANGE(VALUE, LOWER, UPPER) \
 317   ((unsigned HOST_WIDE_INT) (VALUE) - (unsigned HOST_WIDE_INT) (LOWER) \
 318    <= (unsigned HOST_WIDE_INT) (UPPER) - (unsigned HOST_WIDE_INT) (LOWER))
 319
 320 /* Infrastructure for defining missing _MAX and _MIN macros.  Note that
 321    macros defined with these cannot be used in #if.  */
 322
 323 /* The extra casts work around common compiler bugs.  */
 324 #define INTTYPE_SIGNED(t) (! ((t) 0 < (t) -1))
 325 /* The outer cast is needed to work around a bug in Cray C 5.0.3.0.
 326    It is necessary at least when t == time_t.  */
 327 #define INTTYPE_MINIMUM(t) ((t) (INTTYPE_SIGNED (t) \
 328                             ? (t) 1 << (sizeof (t) * CHAR_BIT - 1) : (t) 0))
 329 #define INTTYPE_MAXIMUM(t) ((t) (~ (t) 0 - INTTYPE_MINIMUM (t)))
 330
 331 /* Use that infrastructure to provide a few constants.  */
 332 #ifndef UCHAR_MAX
 333 # define UCHAR_MAX INTTYPE_MAXIMUM (unsigned char)
 334 #endif
 335
 336 #ifdef TIME_WITH_SYS_TIME
 337 # include <sys/time.h>
 338 # include <time.h>
 339 #else
 340 # if HAVE_SYS_TIME_H
 341 #  include <sys/time.h>
 342 # else
 343 #  ifdef HAVE_TIME_H
 344 #   include <time.h>
 345 #  endif
 346 # endif
 347 #endif
 348
 349 #ifdef HAVE_FCNTL_H
 350 # include <fcntl.h>
 351 #else
 352 # ifdef HAVE_SYS_FILE_H
 353 #  include <sys/file.h>
 354 # endif
 355 #endif
 356
 357 #ifndef SEEK_SET
 358 # define SEEK_SET 0
 359 # define SEEK_CUR 1
 360 # define SEEK_END 2
 361 #endif
 362 #ifndef F_OK
 363 # define F_OK 0
 364 # define X_OK 1
 365 # define W_OK 2
 366 # define R_OK 4
 367 #endif
 368 #ifndef O_RDONLY
 369 # define O_RDONLY 0
 370 #endif
 371 #ifndef O_WRONLY
 372 # define O_WRONLY 1
 373 #endif
 374 #ifndef O_BINARY
 375 # define O_BINARY 0
 376 #endif
 377
 378 /* Some systems define these in, e.g., param.h.  We undefine these names
 379    here to avoid the warnings.  We prefer to use our definitions since we
 380    know they are correct.  */
 381
 382 #undef MIN
 383 #undef MAX
 384 #define MIN(X,Y) ((X) < (Y) ? (X) : (Y))
 385 #define MAX(X,Y) ((X) > (Y) ? (X) : (Y))
 386
 387 /* Returns the least number N such that N * Y >= X.  */
 388 #define CEIL(x,y) (((x) + (y) - 1) / (y))
 389
 390 /* This macro rounds x up to the y boundary.  */
 391 #define ROUND_UP(x,y) (((x) + (y) - 1) & ~((y) - 1))
 392
 393 /* This macro rounds x down to the y boundary.  */
 394 #define ROUND_DOWN(x,y) ((x) & ~((y) - 1))
 395
 396 #ifdef HAVE_SYS_WAIT_H
 397 #include <sys/wait.h>
 398 #endif
 399
 400 #ifndef WIFSIGNALED
 401 #define WIFSIGNALED(S) (((S) & 0xff) != 0 && ((S) & 0xff) != 0x7f)
 402 #endif
 403 #ifndef WTERMSIG
 404 #define WTERMSIG(S) ((S) & 0x7f)
 405 #endif
 406 #ifndef WIFEXITED
 407 #define WIFEXITED(S) (((S) & 0xff) == 0)
 408 #endif
 409 #ifndef WEXITSTATUS
 410 #define WEXITSTATUS(S) (((S) & 0xff00) >> 8)
 411 #endif
 412 #ifndef WSTOPSIG
 413 #define WSTOPSIG WEXITSTATUS
 414 #endif
 415 #ifndef WCOREDUMP
 416 #define WCOREDUMP(S) ((S) & WCOREFLG)
 417 #endif
 418 #ifndef WCOREFLG
 419 #define WCOREFLG 0200
 420 #endif
 421
 422 #include <signal.h>
 423 #if !defined (SIGCHLD) && defined (SIGCLD)
 424 # define SIGCHLD SIGCLD
 425 #endif
 426
 427 #ifdef HAVE_SYS_MMAN_H
 428 # include <sys/mman.h>
 429 #endif
 430
 431 #ifndef MAP_FAILED
 432 # define MAP_FAILED ((void *)-1)
 433 #endif
 434
 435 #if !defined (MAP_ANONYMOUS) && defined (MAP_ANON)
 436 # define MAP_ANONYMOUS MAP_ANON
 437 #endif
 438
 439 #ifdef HAVE_SYS_RESOURCE_H
 440 # include <sys/resource.h>
 441 #endif
 442
 443 #ifdef HAVE_SYS_TIMES_H
 444 # include <sys/times.h>
 445 #endif
 446
 447 /* The HAVE_DECL_* macros are three-state, undefined, 0 or 1.  If they
 448    are defined to 0 then we must provide the relevant declaration
 449    here.  These checks will be in the undefined state while configure
 450    is running so be careful to test "defined (HAVE_DECL_*)".  */
 451
 452 #ifdef __cplusplus
 453 extern "C" {
 454 #endif
 455
 456 #if defined (HAVE_DECL_ATOF) && !HAVE_DECL_ATOF
 457 extern double atof (const char *);
 458 #endif
 459
 460 #if defined (HAVE_DECL_ATOL) && !HAVE_DECL_ATOL
 461 extern long atol (const char *);
 462 #endif
 463
 464 #if defined (HAVE_DECL_FREE) && !HAVE_DECL_FREE
 465 extern void free (void *);
 466 #endif
 467
 468 #if defined (HAVE_DECL_GETCWD) && !HAVE_DECL_GETCWD
 469 extern char *getcwd (char *, size_t);
 470 #endif
 471
 472 #if defined (HAVE_DECL_GETENV) && !HAVE_DECL_GETENV
 473 extern char *getenv (const char *);
 474 #endif
 475
 476 #if defined (HAVE_DECL_GETOPT) && !HAVE_DECL_GETOPT
 477 extern int getopt (int, char * const *, const char *);
 478 #endif
 479
 480 #if defined (HAVE_DECL_GETPAGESIZE) && !HAVE_DECL_GETPAGESIZE
 481 extern int getpagesize (void);
 482 #endif
 483
 484 #if defined (HAVE_DECL_GETWD) && !HAVE_DECL_GETWD
 485 extern char *getwd (char *);
 486 #endif
 487
 488 #if defined (HAVE_DECL_SBRK) && !HAVE_DECL_SBRK
 489 extern void *sbrk (int);
 490 #endif
 491
 492 #if defined (HAVE_DECL_SETENV) && !HAVE_DECL_SETENV
 493 int setenv(const char *, const char *, int);
 494 #endif
 495
 496 #if defined (HAVE_DECL_STRSTR) && !HAVE_DECL_STRSTR
 497 extern char *strstr (const char *, const char *);
 498 #endif
 499
 500 #if defined (HAVE_DECL_STPCPY) && !HAVE_DECL_STPCPY
 501 extern char *stpcpy (char *, const char *);
 502 #endif
 503
 504 #if defined (HAVE_DECL_UNSETENV) && !HAVE_DECL_UNSETENV
 505 int unsetenv(const char *);
 506 #endif
 507
 508 #if defined (HAVE_DECL_MALLOC) && !HAVE_DECL_MALLOC
 509 extern void *malloc (size_t);
 510 #endif
 511
 512 #if defined (HAVE_DECL_CALLOC) && !HAVE_DECL_CALLOC
 513 extern void *calloc (size_t, size_t);
 514 #endif
 515
 516 #if defined (HAVE_DECL_REALLOC) && !HAVE_DECL_REALLOC
 517 extern void *realloc (void *, size_t);
 518 #endif
 519
 520 #ifdef __cplusplus
 521 }
 522 #endif
 523
 524 #ifdef HAVE_STDINT_H
 525 #include <stdint.h>
 526 #endif
 527
 528 #ifdef HAVE_INTTYPES_H
 529 #include <inttypes.h>
 530 #endif
 531
 532 #ifdef __cplusplus
 533 extern "C" {
 534 #endif
 535
 536 /* If the system doesn't provide strsignal, we get it defined in
 537    libiberty but no declaration is supplied.  */
 538 #if !defined (HAVE_STRSIGNAL) \
 539     || (defined (HAVE_DECL_STRSIGNAL) && !HAVE_DECL_STRSIGNAL)
 540 # ifndef strsignal
 541 extern const char *strsignal (int);
 542 # endif
 543 #endif
 544
 545 #ifdef HAVE_GETRLIMIT
 546 # if defined (HAVE_DECL_GETRLIMIT) && !HAVE_DECL_GETRLIMIT
 547 #  ifndef getrlimit
 548 struct rlimit;
 549 extern int getrlimit (int, struct rlimit *);
 550 #  endif
 551 # endif
 552 #endif
 553
 554 #ifdef HAVE_SETRLIMIT
 555 # if defined (HAVE_DECL_SETRLIMIT) && !HAVE_DECL_SETRLIMIT
 556 #  ifndef setrlimit
 557 struct rlimit;
 558 extern int setrlimit (int, const struct rlimit *);
 559 #  endif
 560 # endif
 561 #endif
 562
 563 #if defined (HAVE_DECL_ABORT) && !HAVE_DECL_ABORT
 564 extern void abort (void);
 565 #endif
 566
 567 #if defined (HAVE_DECL_SNPRINTF) && !HAVE_DECL_SNPRINTF
 568 extern int snprintf (char *, size_t, const char *, ...);
 569 #endif
 570
 571 #if defined (HAVE_DECL_VSNPRINTF) && !HAVE_DECL_VSNPRINTF
 572 extern int vsnprintf (char *, size_t, const char *, va_list);
 573 #endif
 574
 575 #ifdef __cplusplus
 576 }
 577 #endif
 578
 579 /* 1 if we have C99 designated initializers.  */
 580 #if !defined(HAVE_DESIGNATED_INITIALIZERS)
 581 #ifdef __cplusplus
 582 #define HAVE_DESIGNATED_INITIALIZERS 0
 583 #else
 584 #define HAVE_DESIGNATED_INITIALIZERS \
 585   ((GCC_VERSION >= 2007) || (__STDC_VERSION__ >= 199901L))
 586 #endif
 587 #endif
 588
 589 #if !defined(HAVE_DESIGNATED_UNION_INITIALIZERS)
 590 #ifdef __cplusplus
 591 #define HAVE_DESIGNATED_UNION_INITIALIZERS (GCC_VERSION >= 4007)
 592 #else
 593 #define HAVE_DESIGNATED_UNION_INITIALIZERS \
 594   ((GCC_VERSION >= 2007) || (__STDC_VERSION__ >= 199901L))
 595 #endif
 596 #endif
 597
 598 #if HAVE_SYS_STAT_H
 599 # include <sys/stat.h>
 600 #endif
 601
 602 /* Test if something is a normal file.  */
 603 #ifndef S_ISREG
 604 #define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
 605 #endif
 606
 607 /* Test if something is a directory.  */
 608 #ifndef S_ISDIR
 609 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
 610 #endif
 611
 612 /* Test if something is a character special file.  */
 613 #ifndef S_ISCHR
 614 #define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR)
 615 #endif
 616
 617 /* Test if something is a block special file.  */
 618 #ifndef S_ISBLK
 619 #define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK)
 620 #endif
 621
 622 /* Test if something is a socket.  */
 623 #ifndef S_ISSOCK
 624 # ifdef S_IFSOCK
 625 #   define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK)
 626 # else
 627 #   define S_ISSOCK(m) 0
 628 # endif
 629 #endif
 630
 631 /* Test if something is a FIFO.  */
 632 #ifndef S_ISFIFO
 633 # ifdef S_IFIFO
 634 #  define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO)
 635 # else
 636 #  define S_ISFIFO(m) 0
 637 # endif
 638 #endif
 639
 640 /* Define well known filenos if the system does not define them.  */
 641 #ifndef STDIN_FILENO
 642 # define STDIN_FILENO   0
 643 #endif
 644 #ifndef STDOUT_FILENO
 645 # define STDOUT_FILENO  1
 646 #endif
 647 #ifndef STDERR_FILENO
 648 # define STDERR_FILENO  2
 649 #endif
 650
 651 /* Some systems have mkdir that takes a single argument.  */
 652 #ifdef MKDIR_TAKES_ONE_ARG
 653 # define mkdir(a,b) mkdir (a)
 654 #endif
 655
 656 #ifndef HAVE_KILL
 657 # define kill(p,s) raise (s)
 658 #endif
 659
 660 /* Provide a way to print an address via printf.  */
 661 #ifndef HOST_PTR_PRINTF
 662 #define HOST_PTR_PRINTF "%p"
 663 #endif /* ! HOST_PTR_PRINTF */
 664
 665 /* By default, colon separates directories in a path.  */
 666 #ifndef PATH_SEPARATOR
 667 #define PATH_SEPARATOR ':'
 668 #endif
 669
 670 /* Filename handling macros.  */
 671 #include "filenames.h"
 672
 673 /* These should be phased out in favor of IS_DIR_SEPARATOR, where possible.  */
 674 #ifndef DIR_SEPARATOR
 675 # define DIR_SEPARATOR '/'
 676 # ifdef HAVE_DOS_BASED_FILE_SYSTEM
 677 #  define DIR_SEPARATOR_2 '\\'
 678 # endif
 679 #endif
 680
 681 #if defined (ENABLE_PLUGIN) && defined (HAVE_DLFCN_H)
 682 /* If plugin support is enabled, we could use libdl.  */
 683 #include <dlfcn.h>
 684 #endif
 685
 686 /* Do not introduce a gmp.h dependency on the build system.  */
 687 #ifndef GENERATOR_FILE
 688 #include <gmp.h>
 689 #endif
 690
 691 /* Get libiberty declarations.  */
 692 #include "libiberty.h"
 693
 694 #undef FFS  /* Some systems predefine this symbol; don't let it interfere.  */
 695 #undef FLOAT /* Likewise.  */
 696 #undef ABS /* Likewise.  */
 697 #undef PC /* Likewise.  */
 698
 699 /* Provide a default for the HOST_BIT_BUCKET.
 700    This suffices for POSIX-like hosts.  */
 701
 702 #ifndef HOST_BIT_BUCKET
 703 #define HOST_BIT_BUCKET "/dev/null"
 704 #endif
 705
 706 #ifndef offsetof
 707 #define offsetof(TYPE, MEMBER)  ((size_t) &((TYPE *) 0)->MEMBER)
 708 #endif
 709
 710 /* Various error reporting routines want to use __FUNCTION__.  */
 711 #if (GCC_VERSION < 2007)
 712 #ifndef __FUNCTION__
 713 #define __FUNCTION__ "?"
 714 #endif /* ! __FUNCTION__ */
 715 #endif
 716
 717 /* __builtin_expect(A, B) evaluates to A, but notifies the compiler that
 718    the most likely value of A is B.  This feature was added at some point
 719    between 2.95 and 3.0.  Let's use 3.0 as the lower bound for now.  */
 720 #if (GCC_VERSION < 3000)
 721 #define __builtin_expect(a, b) (a)
 722 #endif
 723
 724 /* Some of the headers included by <memory> can use "abort" within a
 725    namespace, e.g. "_VSTD::abort();", which fails after we use the
 726    preprocessor to redefine "abort" as "fancy_abort" below.
 727    Given that unique-ptr.h can use "free", we need to do this after "free"
 728    is declared but before "abort" is overridden.  */
 729
 730 #ifdef INCLUDE_UNIQUE_PTR
 731 # include "unique-ptr.h"
 732 #endif
 733
 734 #ifdef INCLUDE_MALLOC_H
 735 #if defined(HAVE_MALLINFO) || defined(HAVE_MALLINFO2)
 736 #include <malloc.h>
 737 #endif
 738 #endif
 739
 740 #ifdef INCLUDE_ISL
 741 #ifdef HAVE_isl
 742 #include <isl/options.h>
 743 #include <isl/ctx.h>
 744 #include <isl/val.h>
 745 #include <isl/set.h>
 746 #include <isl/union_set.h>
 747 #include <isl/map.h>
 748 #include <isl/union_map.h>
 749 #include <isl/aff.h>
 750 #include <isl/constraint.h>
 751 #include <isl/flow.h>
 752 #include <isl/ilp.h>
 753 #include <isl/schedule.h>
 754 #include <isl/ast_build.h>
 755 #include <isl/schedule_node.h>
 756 #include <isl/id.h>
 757 #include <isl/space.h>
 758 #endif
 759 #endif
 760
 761 /* Redefine abort to report an internal error w/o coredump, and
 762    reporting the location of the error in the source file.  */
 763 extern void fancy_abort (const char *, int, const char *)
 764                                          ATTRIBUTE_NORETURN ATTRIBUTE_COLD;
 765 #define abort() fancy_abort (__FILE__, __LINE__, __FUNCTION__)
 766
 767 /* Use gcc_assert(EXPR) to test invariants.  */
 768 #if ENABLE_ASSERT_CHECKING
 769 #define gcc_assert(EXPR)                                                \
 770    ((void)(!(EXPR) ? fancy_abort (__FILE__, __LINE__, __FUNCTION__), 0 : 0))
 771 #elif (GCC_VERSION >= 4005)
 772 #define gcc_assert(EXPR)                                                \
 773   ((void)(__builtin_expect (!(EXPR), 0) ? __builtin_unreachable (), 0 : 0))
 774 #else
 775 /* Include EXPR, so that unused variable warnings do not occur.  */
 776 #define gcc_assert(EXPR) ((void)(0 && (EXPR)))
 777 #endif
 778
 779 #if CHECKING_P
 780 #define gcc_checking_assert(EXPR) gcc_assert (EXPR)
 781 #else
 782 /* N.B.: in release build EXPR is not evaluated.  */
 783 #define gcc_checking_assert(EXPR) ((void)(0 && (EXPR)))
 784 #endif
 785
 786 #if GCC_VERSION >= 4000
 787 #define ALWAYS_INLINE inline __attribute__ ((always_inline))
 788 #else
 789 #define ALWAYS_INLINE inline
 790 #endif
 791
 792 /* Use gcc_unreachable() to mark unreachable locations (like an
 793    unreachable default case of a switch.  Do not use gcc_assert(0).  */
 794 #if (GCC_VERSION >= 4005) && !ENABLE_ASSERT_CHECKING
 795 #define gcc_unreachable() __builtin_unreachable ()
 796 #else
 797 #define gcc_unreachable() (fancy_abort (__FILE__, __LINE__, __FUNCTION__))
 798 #endif
 799
 800 #if GCC_VERSION >= 7000 && defined(__has_attribute)
 801 # if __has_attribute(fallthrough)
 802 #  define gcc_fallthrough() __attribute__((fallthrough))
 803 # else
 804 #  define gcc_fallthrough()
 805 # endif
 806 #else
 807 # define gcc_fallthrough()
 808 #endif
 809
 810 #if GCC_VERSION >= 3001
 811 #define STATIC_CONSTANT_P(X) (__builtin_constant_p (X) && (X))
 812 #else
 813 #define STATIC_CONSTANT_P(X) (false && (X))
 814 #endif
 815
 816 /* static_assert (COND, MESSAGE) is available in C++11 onwards.  */
 817 #if __cplusplus >= 201103L
 818 #define STATIC_ASSERT(X) \
 819   static_assert ((X), #X)
 820 #else
 821 #define STATIC_ASSERT(X) \
 822   typedef int assertion1[(X) ? 1 : -1] ATTRIBUTE_UNUSED
 823 #endif
 824
 825 /* Provide a fake boolean type.  We make no attempt to use the
 826    C99 _Bool, as it may not be available in the bootstrap compiler,
 827    and even if it is, it is liable to be buggy.
 828    This must be after all inclusion of system headers, as some of
 829    them will mess us up.  */
 830
 831 #undef TRUE
 832 #undef FALSE
 833
 834 #ifdef __cplusplus
 835   /* Obsolete.  */
 836 # define TRUE true
 837 # define FALSE false
 838 #else /* !__cplusplus */
 839 # undef bool
 840 # undef true
 841 # undef false
 842
 843 # define bool unsigned char
 844 # define true 1
 845 # define false 0
 846
 847   /* Obsolete.  */
 848 # define TRUE true
 849 # define FALSE false
 850 #endif /* !__cplusplus */
 851
 852 /* Some compilers do not allow the use of unsigned char in bitfields.  */
 853 #define BOOL_BITFIELD unsigned int
 854
 855 /* GCC older than 4.4 have broken C++ value initialization handling, see
 856    PR11309, PR30111, PR33916, PR82939 and PR84405 for more details.  */
 857 #if GCC_VERSION > 0 && GCC_VERSION < 4004 && !defined(__clang__)
 858 # define BROKEN_VALUE_INITIALIZATION
 859 #endif
 860
 861 /* As the last action in this file, we poison the identifiers that
 862    shouldn't be used.  Note, luckily gcc-3.0's token-based integrated
 863    preprocessor won't trip on poisoned identifiers that arrive from
 864    the expansion of macros.  E.g. #define strrchr rindex, won't error
 865    if rindex is poisoned after this directive is issued and later on
 866    strrchr is called.
 867
 868    Note: We define bypass macros for the few cases where we really
 869    want to use the libc memory allocation routines.  Otherwise we
 870    insist you use the "x" versions from libiberty.  */
 871
 872 #define really_call_malloc malloc
 873 #define really_call_calloc calloc
 874 #define really_call_realloc realloc
 875
 876 #if defined(FLEX_SCANNER) || defined(YYBISON) || defined(YYBYACC)
 877 /* Flex and bison use malloc and realloc.  Yuk.  Note that this means
 878    really_call_* cannot be used in a .l or .y file.  */
 879 #define malloc xmalloc
 880 #define realloc xrealloc
 881 #endif
 882
 883 #if (GCC_VERSION >= 3000)
 884
 885 /* Note autoconf checks for prototype declarations and includes
 886    system.h while doing so.  Only poison these tokens if actually
 887    compiling gcc, so that the autoconf declaration tests for malloc
 888    etc don't spuriously fail.  */
 889 #ifdef IN_GCC
 890
 891 #undef calloc
 892 #undef strdup
 893 #undef strndup
 894  #pragma GCC poison calloc strdup strndup
 895
 896 #if !defined(FLEX_SCANNER) && !defined(YYBISON)
 897 #undef malloc
 898 #undef realloc
 899  #pragma GCC poison malloc realloc
 900 #endif
 901
 902 /* The %m format should be used when GCC's main diagnostic functions
 903    supporting %m are available, and xstrerror from libiberty
 904    otherwise.  */
 905 #undef strerror
 906  #pragma GCC poison strerror
 907
 908 /* loc_t is defined on some systems and too inviting for some
 909    programmers to avoid.  */
 910 #undef loc_t
 911  #pragma GCC poison loc_t
 912
 913 /* Old target macros that have moved to the target hooks structure.  */
 914  #pragma GCC poison ASM_OPEN_PAREN ASM_CLOSE_PAREN                      \
 915         FUNCTION_PROLOGUE FUNCTION_EPILOGUE                             \
 916         FUNCTION_END_PROLOGUE FUNCTION_BEGIN_EPILOGUE                   \
 917         DECL_MACHINE_ATTRIBUTES COMP_TYPE_ATTRIBUTES INSERT_ATTRIBUTES  \
 918         VALID_MACHINE_DECL_ATTRIBUTE VALID_MACHINE_TYPE_ATTRIBUTE       \
 919         SET_DEFAULT_TYPE_ATTRIBUTES SET_DEFAULT_DECL_ATTRIBUTES         \
 920         MERGE_MACHINE_TYPE_ATTRIBUTES MERGE_MACHINE_DECL_ATTRIBUTES     \
 921         MD_INIT_BUILTINS MD_EXPAND_BUILTIN ASM_OUTPUT_CONSTRUCTOR       \
 922         ASM_OUTPUT_DESTRUCTOR SIGNED_CHAR_SPEC MAX_CHAR_TYPE_SIZE       \
 923         WCHAR_UNSIGNED UNIQUE_SECTION SELECT_SECTION SELECT_RTX_SECTION \
 924         ENCODE_SECTION_INFO STRIP_NAME_ENCODING ASM_GLOBALIZE_LABEL     \
 925         ASM_OUTPUT_MI_THUNK CONST_COSTS RTX_COSTS DEFAULT_RTX_COSTS     \
 926         ADDRESS_COST MACHINE_DEPENDENT_REORG ASM_FILE_START ASM_FILE_END \
 927         ASM_SIMPLIFY_DWARF_ADDR INIT_TARGET_OPTABS INIT_SUBTARGET_OPTABS \
 928         INIT_GOFAST_OPTABS MULSI3_LIBCALL MULDI3_LIBCALL DIVSI3_LIBCALL \
 929         DIVDI3_LIBCALL UDIVSI3_LIBCALL UDIVDI3_LIBCALL MODSI3_LIBCALL   \
 930         MODDI3_LIBCALL UMODSI3_LIBCALL UMODDI3_LIBCALL BUILD_VA_LIST_TYPE \
 931         PRETEND_OUTGOING_VARARGS_NAMED STRUCT_VALUE_INCOMING_REGNUM     \
 932         ASM_OUTPUT_SECTION_NAME PROMOTE_FUNCTION_ARGS PROMOTE_FUNCTION_MODE \
 933         STRUCT_VALUE_INCOMING STRICT_ARGUMENT_NAMING                    \
 934         PROMOTE_FUNCTION_RETURN PROMOTE_PROTOTYPES STRUCT_VALUE_REGNUM  \
 935         SETUP_INCOMING_VARARGS EXPAND_BUILTIN_SAVEREGS                  \
 936         DEFAULT_SHORT_ENUMS SPLIT_COMPLEX_ARGS MD_ASM_CLOBBERS          \
 937         HANDLE_PRAGMA_REDEFINE_EXTNAME HANDLE_PRAGMA_EXTERN_PREFIX      \
 938         MUST_PASS_IN_STACK FUNCTION_ARG_PASS_BY_REFERENCE               \
 939         VECTOR_MODE_SUPPORTED_P TARGET_SUPPORTS_HIDDEN                  \
 940         FUNCTION_ARG_PARTIAL_NREGS ASM_OUTPUT_DWARF_DTPREL              \
 941         ALLOCATE_INITIAL_VALUE LEGITIMIZE_ADDRESS FRAME_POINTER_REQUIRED \
 942         CAN_ELIMINATE TRAMPOLINE_TEMPLATE INITIALIZE_TRAMPOLINE         \
 943         TRAMPOLINE_ADJUST_ADDRESS STATIC_CHAIN STATIC_CHAIN_INCOMING    \
 944         RETURN_POPS_ARGS UNITS_PER_SIMD_WORD OVERRIDE_OPTIONS           \
 945         OPTIMIZATION_OPTIONS CLASS_LIKELY_SPILLED_P                     \
 946         USING_SJLJ_EXCEPTIONS TARGET_UNWIND_INFO                        \
 947         CAN_DEBUG_WITHOUT_FP UNLIKELY_EXECUTED_TEXT_SECTION_NAME        \
 948         HOT_TEXT_SECTION_NAME LEGITIMATE_CONSTANT_P ALWAYS_STRIP_DOTDOT \
 949         OUTPUT_ADDR_CONST_EXTRA SMALL_REGISTER_CLASSES ASM_OUTPUT_IDENT \
 950         ASM_BYTE_OP MEMBER_TYPE_FORCES_BLK LIBGCC2_HAS_SF_MODE          \
 951         LIBGCC2_HAS_DF_MODE LIBGCC2_HAS_XF_MODE LIBGCC2_HAS_TF_MODE     \
 952         CLEAR_BY_PIECES_P MOVE_BY_PIECES_P SET_BY_PIECES_P              \
 953         STORE_BY_PIECES_P TARGET_FLT_EVAL_METHOD                        \
 954         HARD_REGNO_CALL_PART_CLOBBERED HARD_REGNO_MODE_OK               \
 955         MODES_TIEABLE_P FUNCTION_ARG_PADDING SLOW_UNALIGNED_ACCESS      \
 956         HARD_REGNO_NREGS SECONDARY_MEMORY_NEEDED_MODE                   \
 957         SECONDARY_MEMORY_NEEDED CANNOT_CHANGE_MODE_CLASS                \
 958         TRULY_NOOP_TRUNCATION FUNCTION_ARG_OFFSET CONSTANT_ALIGNMENT    \
 959         STARTING_FRAME_OFFSET
 960
 961 /* Target macros only used for code built for the target, that have
 962    moved to libgcc-tm.h or have never been present elsewhere.  */
 963  #pragma GCC poison DECLARE_LIBRARY_RENAMES LIBGCC2_GNU_PREFIX          \
 964         MD_UNWIND_SUPPORT MD_FROB_UPDATE_CONTEXT ENABLE_EXECUTE_STACK   \
 965         REG_VALUE_IN_UNWIND_CONTEXT ASSUME_EXTENDED_UNWIND_CONTEXT
 966
 967 /* Other obsolete target macros, or macros that used to be in target
 968    headers and were not used, and may be obsolete or may never have
 969    been used.  */
 970  #pragma GCC poison INT_ASM_OP ASM_OUTPUT_EH_REGION_BEG CPP_PREDEFINES     \
 971         ASM_OUTPUT_EH_REGION_END ASM_OUTPUT_LABELREF_AS_INT SMALL_STACK    \
 972         DOESNT_NEED_UNWINDER EH_TABLE_LOOKUP OBJC_SELECTORS_WITHOUT_LABELS \
 973         OMIT_EH_TABLE EASY_DIV_EXPR IMPLICIT_FIX_EXPR                      \
 974         LONGJMP_RESTORE_FROM_STACK MAX_INT_TYPE_SIZE ASM_IDENTIFY_GCC      \
 975         STDC_VALUE TRAMPOLINE_ALIGN ASM_IDENTIFY_GCC_AFTER_SOURCE          \
 976         SLOW_ZERO_EXTEND SUBREG_REGNO_OFFSET DWARF_LINE_MIN_INSTR_LENGTH   \
 977         TRADITIONAL_RETURN_FLOAT NO_BUILTIN_SIZE_TYPE                      \
 978         NO_BUILTIN_PTRDIFF_TYPE NO_BUILTIN_WCHAR_TYPE NO_BUILTIN_WINT_TYPE \
 979         BLOCK_PROFILER BLOCK_PROFILER_CODE FUNCTION_BLOCK_PROFILER         \
 980         FUNCTION_BLOCK_PROFILER_EXIT MACHINE_STATE_SAVE                    \
 981         MACHINE_STATE_RESTORE SCCS_DIRECTIVE SECTION_ASM_OP BYTEORDER      \
 982         ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL HOST_WORDS_BIG_ENDIAN    \
 983         OBJC_PROLOGUE ALLOCATE_TRAMPOLINE HANDLE_PRAGMA ROUND_TYPE_SIZE    \
 984         ROUND_TYPE_SIZE_UNIT CONST_SECTION_ASM_OP CRT_GET_RFIB_TEXT        \
 985         DBX_LBRAC_FIRST DBX_OUTPUT_ENUM DBX_OUTPUT_SOURCE_FILENAME         \
 986         DBX_WORKING_DIRECTORY INSN_CACHE_DEPTH INSN_CACHE_SIZE             \
 987         INSN_CACHE_LINE_WIDTH INIT_SECTION_PREAMBLE NEED_ATEXIT ON_EXIT    \
 988         EXIT_BODY OBJECT_FORMAT_ROSE MULTIBYTE_CHARS MAP_CHARACTER         \
 989         LIBGCC_NEEDS_DOUBLE FINAL_PRESCAN_LABEL DEFAULT_CALLER_SAVES       \
 990         LOAD_ARGS_REVERSED MAX_INTEGER_COMPUTATION_MODE                    \
 991         CONVERT_HARD_REGISTER_TO_SSA_P ASM_OUTPUT_MAIN_SOURCE_FILENAME     \
 992         FIRST_INSN_ADDRESS TEXT_SECTION SHARED_BSS_SECTION_ASM_OP          \
 993         PROMOTED_MODE EXPAND_BUILTIN_VA_END                                \
 994         LINKER_DOES_NOT_WORK_WITH_DWARF2 FUNCTION_ARG_KEEP_AS_REFERENCE    \
 995         GIV_SORT_CRITERION MAX_LONG_TYPE_SIZE MAX_LONG_DOUBLE_TYPE_SIZE    \
 996         MAX_WCHAR_TYPE_SIZE SHARED_SECTION_ASM_OP INTEGRATE_THRESHOLD      \
 997         FINAL_REG_PARM_STACK_SPACE MAYBE_REG_PARM_STACK_SPACE              \
 998         TRADITIONAL_PIPELINE_INTERFACE DFA_PIPELINE_INTERFACE              \
 999         DBX_OUTPUT_STANDARD_TYPES BUILTIN_SETJMP_FRAME_VALUE               \
1000         SUNOS4_SHARED_LIBRARIES PROMOTE_FOR_CALL_ONLY                      \
1001         SPACE_AFTER_L_OPTION NO_RECURSIVE_FUNCTION_CSE                     \
1002         DEFAULT_MAIN_RETURN TARGET_MEM_FUNCTIONS EXPAND_BUILTIN_VA_ARG     \
1003         COLLECT_PARSE_FLAG DWARF2_GENERATE_TEXT_SECTION_LABEL WINNING_GDB  \
1004         ASM_OUTPUT_FILENAME ASM_OUTPUT_SOURCE_LINE FILE_NAME_JOINER        \
1005         GDB_INV_REF_REGPARM_STABS_LETTER DBX_MEMPARM_STABS_LETTER          \
1006         PUT_SDB_SRC_FILE STABS_GCC_MARKER DBX_OUTPUT_FUNCTION_END          \
1007         DBX_OUTPUT_GCC_MARKER DBX_FINISH_SYMBOL SDB_GENERATE_FAKE          \
1008         NON_SAVING_SETJMP TARGET_LATE_RTL_PROLOGUE_EPILOGUE                \
1009         CASE_DROPS_THROUGH TARGET_BELL TARGET_BS TARGET_CR TARGET_DIGIT0   \
1010         TARGET_ESC TARGET_FF TARGET_NEWLINE TARGET_TAB TARGET_VT           \
1011         LINK_LIBGCC_SPECIAL DONT_ACCESS_GBLS_AFTER_EPILOGUE                \
1012         TARGET_OPTIONS TARGET_SWITCHES EXTRA_CC_MODES FINALIZE_PIC         \
1013         PREDICATE_CODES SPECIAL_MODE_PREDICATES UNALIGNED_WORD_ASM_OP      \
1014         EXTRA_SECTIONS EXTRA_SECTION_FUNCTIONS READONLY_DATA_SECTION       \
1015         TARGET_ASM_EXCEPTION_SECTION TARGET_ASM_EH_FRAME_SECTION           \
1016         SMALL_ARG_MAX ASM_OUTPUT_SHARED_BSS ASM_OUTPUT_SHARED_COMMON       \
1017         ASM_OUTPUT_SHARED_LOCAL ASM_MAKE_LABEL_LINKONCE                    \
1018         STACK_CHECK_PROBE_INTERVAL STACK_CHECK_PROBE_LOAD                  \
1019         ORDER_REGS_FOR_LOCAL_ALLOC FUNCTION_OUTGOING_VALUE                 \
1020         ASM_DECLARE_CONSTANT_NAME MODIFY_TARGET_NAME SWITCHES_NEED_SPACES  \
1021         SWITCH_CURTAILS_COMPILATION SWITCH_TAKES_ARG WORD_SWITCH_TAKES_ARG \
1022         TARGET_OPTION_TRANSLATE_TABLE HANDLE_PRAGMA_PACK_PUSH_POP          \
1023         HANDLE_SYSV_PRAGMA HANDLE_PRAGMA_WEAK CONDITIONAL_REGISTER_USAGE   \
1024         FUNCTION_ARG_BOUNDARY MUST_USE_SJLJ_EXCEPTIONS US_SOFTWARE_GOFAST  \
1025         USING_SVR4_H SVR4_ASM_SPEC FUNCTION_ARG FUNCTION_ARG_ADVANCE       \
1026         FUNCTION_INCOMING_ARG IRA_COVER_CLASSES TARGET_VERSION             \
1027         MACHINE_TYPE TARGET_HAS_TARGETCM ASM_OUTPUT_BSS                    \
1028         SETJMP_VIA_SAVE_AREA FORBIDDEN_INC_DEC_CLASSES                     \
1029         PREFERRED_OUTPUT_RELOAD_CLASS SYSTEM_INCLUDE_DIR                   \
1030         STANDARD_INCLUDE_DIR STANDARD_INCLUDE_COMPONENT                    \
1031         LINK_ELIMINATE_DUPLICATE_LDIRECTORIES MIPS_DEBUGGING_INFO          \
1032         IDENT_ASM_OP ALL_COP_ADDITIONAL_REGISTER_NAMES DBX_OUTPUT_LBRAC    \
1033         DBX_OUTPUT_NFUN DBX_OUTPUT_RBRAC RANGE_TEST_NON_SHORT_CIRCUIT      \
1034         REAL_VALUE_TRUNCATE REVERSE_CONDEXEC_PREDICATES_P                  \
1035         TARGET_ALIGN_ANON_BITFIELDS TARGET_NARROW_VOLATILE_BITFIELDS       \
1036         IDENT_ASM_OP UNALIGNED_SHORT_ASM_OP UNALIGNED_INT_ASM_OP           \
1037         UNALIGNED_LONG_ASM_OP UNALIGNED_DOUBLE_INT_ASM_OP                  \
1038         USE_COMMON_FOR_ONE_ONLY IFCVT_EXTRA_FIELDS IFCVT_INIT_EXTRA_FIELDS \
1039         CASE_USE_BIT_TESTS FIXUNS_TRUNC_LIKE_FIX_TRUNC                     \
1040         GO_IF_MODE_DEPENDENT_ADDRESS DELAY_SLOTS_FOR_EPILOGUE              \
1041         ELIGIBLE_FOR_EPILOGUE_DELAY TARGET_C99_FUNCTIONS TARGET_HAS_SINCOS \
1042         REG_CLASS_FROM_LETTER CONST_OK_FOR_LETTER_P                        \
1043         CONST_DOUBLE_OK_FOR_LETTER_P EXTRA_CONSTRAINT                      \
1044         REG_CLASS_FROM_CONSTRAINT REG_CLASS_FOR_CONSTRAINT                 \
1045         EXTRA_CONSTRAINT_STR EXTRA_MEMORY_CONSTRAINT                       \
1046         EXTRA_ADDRESS_CONSTRAINT CONST_DOUBLE_OK_FOR_CONSTRAINT_P          \
1047         CALLER_SAVE_PROFITABLE LARGEST_EXPONENT_IS_NORMAL                  \
1048         ROUND_TOWARDS_ZERO SF_SIZE DF_SIZE XF_SIZE TF_SIZE LIBGCC2_TF_CEXT \
1049         LIBGCC2_LONG_DOUBLE_TYPE_SIZE STRUCT_VALUE                         \
1050         EH_FRAME_IN_DATA_SECTION TARGET_FLT_EVAL_METHOD_NON_DEFAULT        \
1051         JCR_SECTION_NAME TARGET_USE_JCR_SECTION SDB_DEBUGGING_INFO         \
1052         SDB_DEBUG NO_IMPLICIT_EXTERN_C
1053
1054 /* Hooks that are no longer used.  */
1055  #pragma GCC poison LANG_HOOKS_FUNCTION_MARK LANG_HOOKS_FUNCTION_FREE   \
1056         LANG_HOOKS_MARK_TREE LANG_HOOKS_INSERT_DEFAULT_ATTRIBUTES \
1057         LANG_HOOKS_TREE_INLINING_ESTIMATE_NUM_INSNS \
1058         LANG_HOOKS_PUSHLEVEL LANG_HOOKS_SET_BLOCK \
1059         LANG_HOOKS_MAYBE_BUILD_CLEANUP LANG_HOOKS_UPDATE_DECL_AFTER_SAVING \
1060         LANG_HOOKS_POPLEVEL LANG_HOOKS_TRUTHVALUE_CONVERSION \
1061         TARGET_PROMOTE_FUNCTION_ARGS TARGET_PROMOTE_FUNCTION_RETURN \
1062         LANG_HOOKS_MISSING_ARGUMENT LANG_HOOKS_HASH_TYPES \
1063         TARGET_HANDLE_OFAST TARGET_OPTION_OPTIMIZATION \
1064         TARGET_IRA_COVER_CLASSES TARGET_HELP \
1065         TARGET_HANDLE_PRAGMA_EXTERN_PREFIX \
1066         TARGET_VECTORIZE_BUILTIN_MUL_WIDEN_EVEN \
1067         TARGET_VECTORIZE_BUILTIN_MUL_WIDEN_ODD \
1068         TARGET_MD_ASM_CLOBBERS TARGET_RELAXED_ORDERING \
1069         EXTENDED_SDB_BASIC_TYPES TARGET_INVALID_PARAMETER_TYPE \
1070         TARGET_INVALID_RETURN_TYPE
1071
1072 /* Arrays that were deleted in favor of a functional interface.  */
1073  #pragma GCC poison built_in_decls implicit_built_in_decls
1074
1075 /* Hooks into libgcc2.  */
1076  #pragma GCC poison LIBGCC2_DOUBLE_TYPE_SIZE LIBGCC2_WORDS_BIG_ENDIAN \
1077    LIBGCC2_FLOAT_WORDS_BIG_ENDIAN
1078
1079 /* Miscellaneous macros that are no longer used.  */
1080  #pragma GCC poison USE_MAPPED_LOCATION GET_ENVIRONMENT
1081
1082 /* Libiberty macros that are no longer used in GCC.  */
1083 #undef ANSI_PROTOTYPES
1084 #undef PTR_CONST
1085 #undef LONG_DOUBLE
1086 #undef VPARAMS
1087 #undef VA_OPEN
1088 #undef VA_FIXEDARG
1089 #undef VA_CLOSE
1090 #undef VA_START
1091  #pragma GCC poison ANSI_PROTOTYPES PTR_CONST LONG_DOUBLE VPARAMS VA_OPEN \
1092   VA_FIXEDARG VA_CLOSE VA_START
1093 #endif /* IN_GCC */
1094
1095 /* Front ends should never have to include middle-end headers.  Enforce
1096    this by poisoning the header double-include protection defines.  */
1097 #ifdef IN_GCC_FRONTEND
1098 #pragma GCC poison GCC_RTL_H GCC_EXCEPT_H GCC_EXPR_H
1099 #endif
1100
1101 /* Note: not all uses of the `index' token (e.g. variable names and
1102    structure members) have been eliminated.  */
1103 #undef bcopy
1104 #undef bzero
1105 #undef bcmp
1106 #undef rindex
1107  #pragma GCC poison bcopy bzero bcmp rindex
1108
1109 /* Poison ENABLE_CHECKING macro that should be replaced with
1110    'if (flag_checking)', or with CHECKING_P macro.  */
1111 #pragma GCC poison ENABLE_CHECKING
1112
1113 #endif /* GCC >= 3.0 */
1114
1115 /* This macro allows casting away const-ness to pass -Wcast-qual
1116    warnings.  DO NOT USE THIS UNLESS YOU REALLY HAVE TO!  It should
1117    only be used in certain specific cases.  One valid case is where
1118    the C standard definitions or prototypes force you to.  E.g. if you
1119    need to free a const object, or if you pass a const string to
1120    execv, et al.  Another valid use would be in an allocation function
1121    that creates const objects that need to be initialized.  In some
1122    cases we have non-const functions that return the argument
1123    (e.g. next_nonnote_insn).  Rather than create const shadow
1124    functions, we can cast away const-ness in calling these interfaces
1125    if we're careful to verify that the called function does indeed not
1126    modify its argument and the return value is only used in a const
1127    context.  (This can be somewhat dangerous as these assumptions can
1128    change after the fact).  Beyond these uses, most other cases of
1129    using this macro should be viewed with extreme caution.  */
1130
1131 #ifdef __cplusplus
1132 #define CONST_CAST2(TOTYPE,FROMTYPE,X) (const_cast<TOTYPE> (X))
1133 #else
1134 #if defined(__GNUC__) && GCC_VERSION > 4000
1135 /* GCC 4.0.x has a bug where it may ICE on this expression,
1136    so does GCC 3.4.x (PR17436).  */
1137 #define CONST_CAST2(TOTYPE,FROMTYPE,X) ((__extension__(union {FROMTYPE _q; TOTYPE _nq;})(X))._nq)
1138 #elif defined(__GNUC__)
1139 static inline char *
1140 helper_const_non_const_cast (const char *p)
1141 {
1142   union {
1143     const char *const_c;
1144     char *c;
1145   } val;
1146   val.const_c = p;
1147   return val.c;
1148 }
1149
1150 #define CONST_CAST2(TOTYPE,FROMTYPE,X) \
1151         ((TOTYPE) helper_const_non_const_cast ((const char *) (FROMTYPE) (X)))
1152 #else
1153 #define CONST_CAST2(TOTYPE,FROMTYPE,X) ((TOTYPE)(FROMTYPE)(X))
1154 #endif
1155 #endif
1156 #define CONST_CAST(TYPE,X) CONST_CAST2 (TYPE, const TYPE, (X))
1157 #define CONST_CAST_TREE(X) CONST_CAST (union tree_node *, (X))
1158 #define CONST_CAST_RTX(X) CONST_CAST (struct rtx_def *, (X))
1159 #define CONST_CAST_RTX_INSN(X) CONST_CAST (struct rtx_insn *, (X))
1160 #define CONST_CAST_BB(X) CONST_CAST (struct basic_block_def *, (X))
1161 #define CONST_CAST_GIMPLE(X) CONST_CAST (gimple *, (X))
1162
1163 /* Activate certain diagnostics as warnings (not errors via the
1164    -Werror flag).  */
1165 #if GCC_VERSION >= 4003
1166 /* If asserts are disabled, activate -Wuninitialized as a warning (not
1167    an error/-Werror).  */
1168 #ifndef ENABLE_ASSERT_CHECKING
1169 #pragma GCC diagnostic warning "-Wuninitialized"
1170 #endif
1171 #endif
1172
1173 #ifdef ENABLE_VALGRIND_ANNOTATIONS
1174 # ifdef HAVE_VALGRIND_MEMCHECK_H
1175 #  include <valgrind/memcheck.h>
1176 # elif defined HAVE_MEMCHECK_H
1177 #  include <memcheck.h>
1178 # else
1179 #  include <valgrind.h>
1180 # endif
1181 /* Compatibility macros to let valgrind 3.1 work.  */
1182 # ifndef VALGRIND_MAKE_MEM_NOACCESS
1183 #  define VALGRIND_MAKE_MEM_NOACCESS VALGRIND_MAKE_NOACCESS
1184 # endif
1185 # ifndef VALGRIND_MAKE_MEM_DEFINED
1186 #  define VALGRIND_MAKE_MEM_DEFINED VALGRIND_MAKE_READABLE
1187 # endif
1188 # ifndef VALGRIND_MAKE_MEM_UNDEFINED
1189 #  define VALGRIND_MAKE_MEM_UNDEFINED VALGRIND_MAKE_WRITABLE
1190 # endif
1191 #else
1192 /* Avoid #ifdef:s when we can help it.  */
1193 #define VALGRIND_DISCARD(x)
1194 #define VALGRIND_MALLOCLIKE_BLOCK(w,x,y,z)
1195 #define VALGRIND_FREELIKE_BLOCK(x,y)
1196 #endif
1197
1198 /* Macros to temporarily ignore some warnings.  */
1199 #if GCC_VERSION >= 6000
1200 #define GCC_DIAGNOSTIC_STRINGIFY(x) #x
1201 #define GCC_DIAGNOSTIC_PUSH_IGNORED(x) \
1202   _Pragma ("GCC diagnostic push") \
1203   _Pragma (GCC_DIAGNOSTIC_STRINGIFY (GCC diagnostic ignored #x))
1204 #define GCC_DIAGNOSTIC_POP _Pragma ("GCC diagnostic pop")
1205 #else
1206 #define GCC_DIAGNOSTIC_PUSH_IGNORED(x)
1207 #define GCC_DIAGNOSTIC_POP
1208 #endif
1209
1210 /* In LTO -fwhole-program build we still want to keep the debug functions available
1211    for debugger.  Mark them as used to prevent removal.  */
1212 #if (GCC_VERSION > 4000)
1213 #define DEBUG_FUNCTION __attribute__ ((__used__))
1214 #define DEBUG_VARIABLE __attribute__ ((__used__))
1215 #else
1216 #define DEBUG_FUNCTION
1217 #define DEBUG_VARIABLE
1218 #endif
1219
1220 /* General macro to extract bit Y of X.  */
1221 #define TEST_BIT(X, Y) (((X) >> (Y)) & 1)
1222
1223 /* Get definitions of HOST_WIDE_INT.  */
1224 #include "hwint.h"
1225
1226 typedef int sort_r_cmp_fn (const void *, const void *, void *);
1227 void qsort_chk (void *, size_t, size_t, sort_r_cmp_fn *, void *);
1228 void gcc_sort_r (void *, size_t, size_t, sort_r_cmp_fn *, void *);
1229 void gcc_qsort (void *, size_t, size_t, int (*)(const void *, const void *));
1230 void gcc_stablesort (void *, size_t, size_t,
1231                      int (*)(const void *, const void *));
1232 /* Redirect four-argument qsort calls to gcc_qsort; one-argument invocations
1233    correspond to vec::qsort, and use C qsort internally.  */
1234 #define PP_5th(a1, a2, a3, a4, a5, ...) a5
1235 #undef qsort
1236 #define qsort(...) PP_5th (__VA_ARGS__, gcc_qsort, 3, 2, qsort, 0) (__VA_ARGS__)
1237
1238 #define ONE_K 1024
1239 #define ONE_M (ONE_K * ONE_K)
1240 #define ONE_G (ONE_K * ONE_M)
1241
1242 /* Display a number as an integer multiple of either:
1243    - 1024, if said integer is >= to 10 K (in base 2)
1244    - 1024 * 1024, if said integer is >= 10 M in (base 2)
1245  */
1246 #define SIZE_SCALE(x) (((x) < 10 * ONE_K \
1247                         ? (x) \
1248                         : ((x) < 10 * ONE_M \
1249                            ? (x) / ONE_K \
1250                            : (x) / ONE_M)))
1251
1252 /* For a given integer, display either:
1253    - the character 'k', if the number is higher than 10 K (in base 2)
1254      but strictly lower than 10 M (in base 2)
1255    - the character 'M' if the number is higher than 10 M (in base2)
1256    - the charcter ' ' if the number is strictly lower  than 10 K  */
1257 #define SIZE_LABEL(x) ((x) < 10 * ONE_K ? ' ' : ((x) < 10 * ONE_M ? 'k' : 'M'))
1258
1259 /* Display an integer amount as multiple of 1K or 1M (in base 2).
1260    Display the correct unit (either k, M, or ' ') after the amount, as
1261    well.  */
1262 #define SIZE_AMOUNT(size) (uint64_t)SIZE_SCALE (size), SIZE_LABEL (size)
1263
1264 /* Format string particle for printing a SIZE_AMOUNT with N being the width
1265    of the number.  */
1266 #define PRsa(n) "%" #n PRIu64 "%c"
1267
1268 /* System headers may define NULL to be an integer (e.g. 0L), which cannot be
1269    used safely in certain contexts (e.g. as sentinels).  Redefine NULL to
1270    nullptr in order to make it safer.  Note that this might confuse system
1271    headers, however, by convention they must not be included after this point.
1272 */
1273 #ifdef __cplusplus
1274 #undef NULL
1275 #define NULL nullptr
1276 #endif
1277
1278 #endif /* ! GCC_SYSTEM_H */