gcc/system.h

   1 /* Get common system includes and various definitions and declarations based
   2    on autoconf macros.
   3    Copyright (C) 1998-2024 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 C++ standard headers before "safe-ctype.h" to avoid GCC
 198    poisoning the ctype macros through safe-ctype.h */
 199
 200 #ifdef __cplusplus
 201 #if defined (INCLUDE_ALGORITHM) || !defined (HAVE_SWAP_IN_UTILITY)
 202 # include <algorithm>
 203 #endif
 204 #ifdef INCLUDE_LIST
 205 # include <list>
 206 #endif
 207 #ifdef INCLUDE_MAP
 208 # include <map>
 209 #endif
 210 #ifdef INCLUDE_SET
 211 # include <set>
 212 #endif
 213 #ifdef INCLUDE_STRING
 214 # include <string>
 215 #endif
 216 #ifdef INCLUDE_VECTOR
 217 # include <vector>
 218 #endif
 219 #ifdef INCLUDE_ARRAY
 220 # include <array>
 221 #endif
 222 #ifdef INCLUDE_FUNCTIONAL
 223 # include <functional>
 224 #endif
 225 # include <cstring>
 226 # include <initializer_list>
 227 # include <new>
 228 # include <utility>
 229 # include <type_traits>
 230 #endif
 231
 232 /* There are an extraordinary number of issues with <ctype.h>.
 233    The last straw is that it varies with the locale.  Use libiberty's
 234    replacement instead.  */
 235 #include "safe-ctype.h"
 236
 237 #include <sys/types.h>
 238
 239 #include <errno.h>
 240
 241 #if !defined (errno) && defined (HAVE_DECL_ERRNO) && !HAVE_DECL_ERRNO
 242 extern int errno;
 243 #endif
 244
 245 /* Some of glibc's string inlines cause warnings.  Plus we'd rather
 246    rely on (and therefore test) GCC's string builtins.  */
 247 #define __NO_STRING_INLINES
 248
 249 #ifdef STRING_WITH_STRINGS
 250 # include <string.h>
 251 # include <strings.h>
 252 #else
 253 # ifdef HAVE_STRING_H
 254 #  include <string.h>
 255 # else
 256 #  ifdef HAVE_STRINGS_H
 257 #   include <strings.h>
 258 #  endif
 259 # endif
 260 #endif
 261
 262 #ifdef HAVE_STDLIB_H
 263 # include <stdlib.h>
 264 #endif
 265
 266 /* When compiling C++ we need to include <cstdlib> as well as <stdlib.h> so
 267    that it is processed before we poison "malloc"; otherwise, if a source
 268    file uses a standard library header that includes <cstdlib>, we will get
 269    an error about 'using std::malloc'.  */
 270 #ifdef __cplusplus
 271 #include <cstdlib>
 272 #endif
 273
 274 /* Undef vec_free from AIX stdlib.h header which conflicts with vec.h.  */
 275 #undef vec_free
 276
 277 /* If we don't have an overriding definition, set SUCCESS_EXIT_CODE and
 278    FATAL_EXIT_CODE to EXIT_SUCCESS and EXIT_FAILURE respectively,
 279    or 0 and 1 if those macros are not defined.  */
 280 #ifndef SUCCESS_EXIT_CODE
 281 # ifdef EXIT_SUCCESS
 282 #  define SUCCESS_EXIT_CODE EXIT_SUCCESS
 283 # else
 284 #  define SUCCESS_EXIT_CODE 0
 285 # endif
 286 #endif
 287
 288 #ifndef FATAL_EXIT_CODE
 289 # ifdef EXIT_FAILURE
 290 #  define FATAL_EXIT_CODE EXIT_FAILURE
 291 # else
 292 #  define FATAL_EXIT_CODE 1
 293 # endif
 294 #endif
 295
 296 #define ICE_EXIT_CODE 4
 297
 298 #ifdef HAVE_UNISTD_H
 299 # include <unistd.h>
 300 #endif
 301
 302 #ifdef HAVE_SYS_PARAM_H
 303 # include <sys/param.h>
 304 /* We use these identifiers later and they appear in some vendor param.h's.  */
 305 # undef PREFETCH
 306 # undef m_slot
 307 #endif
 308
 309 #if HAVE_LIMITS_H
 310 # include <limits.h>
 311 #endif
 312
 313 /* A macro to determine whether a VALUE lies inclusively within a
 314    certain range without evaluating the VALUE more than once.  This
 315    macro won't warn if the VALUE is unsigned and the LOWER bound is
 316    zero, as it would e.g. with "VALUE >= 0 && ...".  Note the LOWER
 317    bound *is* evaluated twice, and LOWER must not be greater than
 318    UPPER.  However the bounds themselves can be either positive or
 319    negative.  */
 320 #define IN_RANGE(VALUE, LOWER, UPPER) \
 321   ((unsigned HOST_WIDE_INT) (VALUE) - (unsigned HOST_WIDE_INT) (LOWER) \
 322    <= (unsigned HOST_WIDE_INT) (UPPER) - (unsigned HOST_WIDE_INT) (LOWER))
 323
 324 /* Infrastructure for defining missing _MAX and _MIN macros.  Note that
 325    macros defined with these cannot be used in #if.  */
 326
 327 /* The extra casts work around common compiler bugs.  */
 328 #define INTTYPE_SIGNED(t) (! ((t) 0 < (t) -1))
 329 /* The outer cast is needed to work around a bug in Cray C 5.0.3.0.
 330    It is necessary at least when t == time_t.  */
 331 #define INTTYPE_MINIMUM(t) ((t) (INTTYPE_SIGNED (t) \
 332                             ? (t) 1 << (sizeof (t) * CHAR_BIT - 1) : (t) 0))
 333 #define INTTYPE_MAXIMUM(t) ((t) (~ (t) 0 - INTTYPE_MINIMUM (t)))
 334
 335 /* Use that infrastructure to provide a few constants.  */
 336 #ifndef UCHAR_MAX
 337 # define UCHAR_MAX INTTYPE_MAXIMUM (unsigned char)
 338 #endif
 339
 340 #ifdef TIME_WITH_SYS_TIME
 341 # include <sys/time.h>
 342 # include <time.h>
 343 #else
 344 # if HAVE_SYS_TIME_H
 345 #  include <sys/time.h>
 346 # else
 347 #  ifdef HAVE_TIME_H
 348 #   include <time.h>
 349 #  endif
 350 # endif
 351 #endif
 352
 353 #ifdef HAVE_FCNTL_H
 354 # include <fcntl.h>
 355 #else
 356 # ifdef HAVE_SYS_FILE_H
 357 #  include <sys/file.h>
 358 # endif
 359 #endif
 360
 361 #ifdef HAVE_SYS_LOCKING_H
 362 # include <sys/locking.h>
 363 #endif
 364
 365 #ifndef SEEK_SET
 366 # define SEEK_SET 0
 367 # define SEEK_CUR 1
 368 # define SEEK_END 2
 369 #endif
 370 #ifndef F_OK
 371 # define F_OK 0
 372 # define X_OK 1
 373 # define W_OK 2
 374 # define R_OK 4
 375 #endif
 376 #ifndef O_RDONLY
 377 # define O_RDONLY 0
 378 #endif
 379 #ifndef O_WRONLY
 380 # define O_WRONLY 1
 381 #endif
 382 #ifndef O_BINARY
 383 # define O_BINARY 0
 384 #endif
 385
 386 /* Some systems define these in, e.g., param.h.  We undefine these names
 387    here to avoid the warnings.  We prefer to use our definitions since we
 388    know they are correct.  */
 389
 390 #undef MIN
 391 #undef MAX
 392 #define MIN(X,Y) ((X) < (Y) ? (X) : (Y))
 393 #define MAX(X,Y) ((X) > (Y) ? (X) : (Y))
 394
 395 /* Returns the least number N such that N * Y >= X.  */
 396 #define CEIL(x,y) (((x) + (y) - 1) / (y))
 397
 398 /* This macro rounds x up to the y boundary.  */
 399 #define ROUND_UP(x,y) (((x) + (y) - 1) & ~((y) - 1))
 400
 401 /* This macro rounds x down to the y boundary.  */
 402 #define ROUND_DOWN(x,y) ((x) & ~((y) - 1))
 403
 404 #ifdef HAVE_SYS_WAIT_H
 405 #include <sys/wait.h>
 406 #endif
 407
 408 #ifndef WIFSIGNALED
 409 #define WIFSIGNALED(S) (((S) & 0xff) != 0 && ((S) & 0xff) != 0x7f)
 410 #endif
 411 #ifndef WTERMSIG
 412 #define WTERMSIG(S) ((S) & 0x7f)
 413 #endif
 414 #ifndef WIFEXITED
 415 #define WIFEXITED(S) (((S) & 0xff) == 0)
 416 #endif
 417 #ifndef WEXITSTATUS
 418 #define WEXITSTATUS(S) (((S) & 0xff00) >> 8)
 419 #endif
 420 #ifndef WSTOPSIG
 421 #define WSTOPSIG WEXITSTATUS
 422 #endif
 423 #ifndef WCOREDUMP
 424 #define WCOREDUMP(S) ((S) & WCOREFLG)
 425 #endif
 426 #ifndef WCOREFLG
 427 #define WCOREFLG 0200
 428 #endif
 429
 430 #include <signal.h>
 431 #if !defined (SIGCHLD) && defined (SIGCLD)
 432 # define SIGCHLD SIGCLD
 433 #endif
 434
 435 #ifdef HAVE_SYS_MMAN_H
 436 # include <sys/mman.h>
 437 #endif
 438
 439 #ifndef MAP_FAILED
 440 # define MAP_FAILED ((void *)-1)
 441 #endif
 442
 443 #if !defined (MAP_ANONYMOUS) && defined (MAP_ANON)
 444 # define MAP_ANONYMOUS MAP_ANON
 445 #endif
 446
 447 #ifdef HAVE_SYS_RESOURCE_H
 448 # include <sys/resource.h>
 449 #endif
 450
 451 #ifdef HAVE_SYS_TIMES_H
 452 # include <sys/times.h>
 453 #endif
 454
 455 /* The HAVE_DECL_* macros are three-state, undefined, 0 or 1.  If they
 456    are defined to 0 then we must provide the relevant declaration
 457    here.  These checks will be in the undefined state while configure
 458    is running so be careful to test "defined (HAVE_DECL_*)".  */
 459
 460 #ifdef __cplusplus
 461 extern "C" {
 462 #endif
 463
 464 #if defined (HAVE_DECL_ATOF) && !HAVE_DECL_ATOF
 465 extern double atof (const char *);
 466 #endif
 467
 468 #if defined (HAVE_DECL_ATOL) && !HAVE_DECL_ATOL
 469 extern long atol (const char *);
 470 #endif
 471
 472 #if defined (HAVE_DECL_FREE) && !HAVE_DECL_FREE
 473 extern void free (void *);
 474 #endif
 475
 476 #if defined (HAVE_DECL_GETCWD) && !HAVE_DECL_GETCWD
 477 extern char *getcwd (char *, size_t);
 478 #endif
 479
 480 #if defined (HAVE_DECL_GETENV) && !HAVE_DECL_GETENV
 481 extern char *getenv (const char *);
 482 #endif
 483
 484 #if defined (HAVE_DECL_GETOPT) && !HAVE_DECL_GETOPT
 485 extern int getopt (int, char * const *, const char *);
 486 #endif
 487
 488 #if defined (HAVE_DECL_GETPAGESIZE) && !HAVE_DECL_GETPAGESIZE
 489 extern int getpagesize (void);
 490 #endif
 491
 492 #if defined (HAVE_DECL_GETWD) && !HAVE_DECL_GETWD
 493 extern char *getwd (char *);
 494 #endif
 495
 496 #if defined (HAVE_DECL_SBRK) && !HAVE_DECL_SBRK
 497 extern void *sbrk (int);
 498 #endif
 499
 500 #if defined (HAVE_DECL_SETENV) && !HAVE_DECL_SETENV
 501 int setenv(const char *, const char *, int);
 502 #endif
 503
 504 #if defined (HAVE_DECL_STRSTR) && !HAVE_DECL_STRSTR
 505 extern char *strstr (const char *, const char *);
 506 #endif
 507
 508 #if defined (HAVE_DECL_STPCPY) && !HAVE_DECL_STPCPY
 509 extern char *stpcpy (char *, const char *);
 510 #endif
 511
 512 #if defined (HAVE_DECL_UNSETENV) && !HAVE_DECL_UNSETENV
 513 int unsetenv(const char *);
 514 #endif
 515
 516 #if defined (HAVE_DECL_MALLOC) && !HAVE_DECL_MALLOC
 517 extern void *malloc (size_t);
 518 #endif
 519
 520 #if defined (HAVE_DECL_CALLOC) && !HAVE_DECL_CALLOC
 521 extern void *calloc (size_t, size_t);
 522 #endif
 523
 524 #if defined (HAVE_DECL_REALLOC) && !HAVE_DECL_REALLOC
 525 extern void *realloc (void *, size_t);
 526 #endif
 527
 528 #ifdef __cplusplus
 529 }
 530 #endif
 531
 532 #ifdef HAVE_STDINT_H
 533 #include <stdint.h>
 534 #endif
 535
 536 #ifdef HAVE_INTTYPES_H
 537 #include <inttypes.h>
 538 #endif
 539
 540 #ifndef SIZE_MAX
 541 # define SIZE_MAX INTTYPE_MAXIMUM (size_t)
 542 #endif
 543
 544 #ifdef __cplusplus
 545 extern "C" {
 546 #endif
 547
 548 /* If the system doesn't provide strsignal, we get it defined in
 549    libiberty but no declaration is supplied.  */
 550 #if !defined (HAVE_STRSIGNAL) \
 551     || (defined (HAVE_DECL_STRSIGNAL) && !HAVE_DECL_STRSIGNAL)
 552 # ifndef strsignal
 553 extern const char *strsignal (int);
 554 # endif
 555 #endif
 556
 557 #ifdef HAVE_GETRLIMIT
 558 # if defined (HAVE_DECL_GETRLIMIT) && !HAVE_DECL_GETRLIMIT
 559 #  ifndef getrlimit
 560 struct rlimit;
 561 extern int getrlimit (int, struct rlimit *);
 562 #  endif
 563 # endif
 564 #endif
 565
 566 #ifdef HAVE_SETRLIMIT
 567 # if defined (HAVE_DECL_SETRLIMIT) && !HAVE_DECL_SETRLIMIT
 568 #  ifndef setrlimit
 569 struct rlimit;
 570 extern int setrlimit (int, const struct rlimit *);
 571 #  endif
 572 # endif
 573 #endif
 574
 575 #if defined (HAVE_DECL_ABORT) && !HAVE_DECL_ABORT
 576 extern void abort (void);
 577 #endif
 578
 579 #if defined (HAVE_DECL_SNPRINTF) && !HAVE_DECL_SNPRINTF
 580 extern int snprintf (char *, size_t, const char *, ...);
 581 #endif
 582
 583 #if defined (HAVE_DECL_VSNPRINTF) && !HAVE_DECL_VSNPRINTF
 584 extern int vsnprintf (char *, size_t, const char *, va_list);
 585 #endif
 586
 587 #ifdef __cplusplus
 588 }
 589 #endif
 590
 591 /* 1 if we have C99 designated initializers.  */
 592 #if !defined(HAVE_DESIGNATED_INITIALIZERS)
 593 #ifdef __cplusplus
 594 #define HAVE_DESIGNATED_INITIALIZERS 0
 595 #else
 596 #define HAVE_DESIGNATED_INITIALIZERS \
 597   ((GCC_VERSION >= 2007) || (__STDC_VERSION__ >= 199901L))
 598 #endif
 599 #endif
 600
 601 #if !defined(HAVE_DESIGNATED_UNION_INITIALIZERS)
 602 #ifdef __cplusplus
 603 #define HAVE_DESIGNATED_UNION_INITIALIZERS (GCC_VERSION >= 4007)
 604 #else
 605 #define HAVE_DESIGNATED_UNION_INITIALIZERS \
 606   ((GCC_VERSION >= 2007) || (__STDC_VERSION__ >= 199901L))
 607 #endif
 608 #endif
 609
 610 #if HAVE_SYS_STAT_H
 611 # include <sys/stat.h>
 612 #endif
 613
 614 /* Test if something is a normal file.  */
 615 #ifndef S_ISREG
 616 #define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
 617 #endif
 618
 619 /* Test if something is a directory.  */
 620 #ifndef S_ISDIR
 621 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
 622 #endif
 623
 624 /* Test if something is a character special file.  */
 625 #ifndef S_ISCHR
 626 #define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR)
 627 #endif
 628
 629 /* Test if something is a block special file.  */
 630 #ifndef S_ISBLK
 631 #define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK)
 632 #endif
 633
 634 /* Test if something is a socket.  */
 635 #ifndef S_ISSOCK
 636 # ifdef S_IFSOCK
 637 #   define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK)
 638 # else
 639 #   define S_ISSOCK(m) 0
 640 # endif
 641 #endif
 642
 643 /* Test if something is a FIFO.  */
 644 #ifndef S_ISFIFO
 645 # ifdef S_IFIFO
 646 #  define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO)
 647 # else
 648 #  define S_ISFIFO(m) 0
 649 # endif
 650 #endif
 651
 652 /* Define well known filenos if the system does not define them.  */
 653 #ifndef STDIN_FILENO
 654 # define STDIN_FILENO   0
 655 #endif
 656 #ifndef STDOUT_FILENO
 657 # define STDOUT_FILENO  1
 658 #endif
 659 #ifndef STDERR_FILENO
 660 # define STDERR_FILENO  2
 661 #endif
 662
 663 /* Some systems have mkdir that takes a single argument.  */
 664 #ifdef MKDIR_TAKES_ONE_ARG
 665 # define mkdir(a,b) mkdir (a)
 666 #endif
 667
 668 #ifndef HAVE_KILL
 669 # define kill(p,s) raise (s)
 670 #endif
 671
 672 /* Provide a way to print an address via printf.  */
 673 #ifndef HOST_PTR_PRINTF
 674 #define HOST_PTR_PRINTF "%p"
 675 #endif /* ! HOST_PTR_PRINTF */
 676
 677 /* By default, colon separates directories in a path.  */
 678 #ifndef PATH_SEPARATOR
 679 #define PATH_SEPARATOR ':'
 680 #endif
 681
 682 /* Filename handling macros.  */
 683 #include "filenames.h"
 684
 685 /* These should be phased out in favor of IS_DIR_SEPARATOR, where possible.  */
 686 #ifndef DIR_SEPARATOR
 687 # define DIR_SEPARATOR '/'
 688 # ifdef HAVE_DOS_BASED_FILE_SYSTEM
 689 #  define DIR_SEPARATOR_2 '\\'
 690 # endif
 691 #endif
 692
 693 #if defined (ENABLE_PLUGIN) && defined (HAVE_DLFCN_H)
 694 /* If plugin support is enabled, we could use libdl.  */
 695 #include <dlfcn.h>
 696 #endif
 697
 698 /* Do not introduce a gmp.h dependency on the build system.  */
 699 #ifndef GENERATOR_FILE
 700 #include <gmp.h>
 701
 702 class auto_mpz
 703 {
 704 public:
 705   auto_mpz () { mpz_init (m_mpz); }
 706   ~auto_mpz () { mpz_clear (m_mpz); }
 707
 708   operator mpz_t& () { return m_mpz; }
 709   mpz_ptr operator-> () { return m_mpz; }
 710
 711   auto_mpz (const auto_mpz &) = delete;
 712   auto_mpz &operator= (const auto_mpz &) = delete;
 713
 714 #if GCC_VERSION < 4008 || GCC_VERSION >= 5000
 715   /* GCC 4.8 and 4.9 don't support this, only fixed in PR62101 for 5.0.  */
 716   friend void mpz_clear (auto_mpz&) = delete;
 717   friend void mpz_init (auto_mpz&) = delete;
 718 #endif
 719
 720 private:
 721   mpz_t m_mpz;
 722 };
 723 #endif
 724
 725 /* Get libiberty declarations.  */
 726 #include "libiberty.h"
 727
 728 #undef FFS  /* Some systems predefine this symbol; don't let it interfere.  */
 729 #undef FLOAT /* Likewise.  */
 730 #undef ABS /* Likewise.  */
 731 #undef PC /* Likewise.  */
 732
 733 /* Provide a default for the HOST_BIT_BUCKET.
 734    This suffices for POSIX-like hosts.  */
 735
 736 #ifndef HOST_BIT_BUCKET
 737 #define HOST_BIT_BUCKET "/dev/null"
 738 #endif
 739
 740 #ifndef offsetof
 741 #define offsetof(TYPE, MEMBER)  ((size_t) &((TYPE *) 0)->MEMBER)
 742 #endif
 743
 744 /* Various error reporting routines want to use __FUNCTION__.  */
 745 #if (GCC_VERSION < 2007)
 746 #ifndef __FUNCTION__
 747 #define __FUNCTION__ "?"
 748 #endif /* ! __FUNCTION__ */
 749 #endif
 750
 751 /* __builtin_expect(A, B) evaluates to A, but notifies the compiler that
 752    the most likely value of A is B.  This feature was added at some point
 753    between 2.95 and 3.0.  Let's use 3.0 as the lower bound for now.  */
 754 #if (GCC_VERSION < 3000)
 755 #define __builtin_expect(a, b) (a)
 756 #endif
 757
 758 #define LIKELY(x) (__builtin_expect ((x), 1))
 759 #define UNLIKELY(x) (__builtin_expect ((x), 0))
 760
 761 /* Some of the headers included by <memory> can use "abort" within a
 762    namespace, e.g. "_VSTD::abort();", which fails after we use the
 763    preprocessor to redefine "abort" as "fancy_abort" below.  */
 764
 765 #ifdef INCLUDE_MEMORY
 766 # include <memory>
 767 #endif
 768
 769 #ifdef INCLUDE_MUTEX
 770 # include <mutex>
 771 #endif
 772
 773 #ifdef INCLUDE_SSTREAM
 774 # include <sstream>
 775 #endif
 776
 777 #ifdef INCLUDE_MALLOC_H
 778 #if defined(HAVE_MALLINFO) || defined(HAVE_MALLINFO2)
 779 #include <malloc.h>
 780 #endif
 781 #endif
 782
 783 #ifdef INCLUDE_ISL
 784 #ifdef HAVE_isl
 785 #include <isl/options.h>
 786 #include <isl/ctx.h>
 787 #include <isl/val.h>
 788 #include <isl/set.h>
 789 #include <isl/union_set.h>
 790 #include <isl/map.h>
 791 #include <isl/union_map.h>
 792 #include <isl/aff.h>
 793 #include <isl/constraint.h>
 794 #include <isl/flow.h>
 795 #include <isl/ilp.h>
 796 #include <isl/schedule.h>
 797 #include <isl/ast_build.h>
 798 #include <isl/schedule_node.h>
 799 #include <isl/id.h>
 800 #include <isl/space.h>
 801 #endif
 802 #endif
 803
 804 /* Redefine 'abort' to report an internal error w/o coredump, and
 805    reporting the location of the error in the source file.
 806    Instead of directly calling 'abort' or 'fancy_abort', GCC code
 807    should normally call 'internal_error' with a specific message.  */
 808 extern void fancy_abort (const char *, int, const char *)
 809                                          ATTRIBUTE_NORETURN ATTRIBUTE_COLD;
 810 #define abort() fancy_abort (__FILE__, __LINE__, __FUNCTION__)
 811
 812 /* Use gcc_assert(EXPR) to test invariants.  */
 813 #if ENABLE_ASSERT_CHECKING
 814 #define gcc_assert(EXPR)                                                \
 815    ((void)(!(EXPR) ? fancy_abort (__FILE__, __LINE__, __FUNCTION__), 0 : 0))
 816 #elif (GCC_VERSION >= 4005)
 817 #define gcc_assert(EXPR)                                                \
 818   ((void)(UNLIKELY (!(EXPR)) ? __builtin_unreachable (), 0 : 0))
 819 #else
 820 /* Include EXPR, so that unused variable warnings do not occur.  */
 821 #define gcc_assert(EXPR) ((void)(0 && (EXPR)))
 822 #endif
 823
 824 #if CHECKING_P
 825 #define gcc_checking_assert(EXPR) gcc_assert (EXPR)
 826 #else
 827 /* N.B.: in release build EXPR is not evaluated.  */
 828 #define gcc_checking_assert(EXPR) ((void)(0 && (EXPR)))
 829 #endif
 830
 831 #if GCC_VERSION >= 4000
 832 #define ALWAYS_INLINE inline __attribute__ ((always_inline))
 833 #else
 834 #define ALWAYS_INLINE inline
 835 #endif
 836
 837 #if GCC_VERSION >= 3004
 838 #define WARN_UNUSED_RESULT __attribute__ ((__warn_unused_result__))
 839 #else
 840 #define WARN_UNUSED_RESULT
 841 #endif
 842
 843 /* Use gcc_unreachable() to mark unreachable locations (like an
 844    unreachable default case of a switch.  Do not use gcc_assert(0).  */
 845 #if (GCC_VERSION >= 4005) && !ENABLE_ASSERT_CHECKING
 846 #define gcc_unreachable() __builtin_unreachable ()
 847 #else
 848 #define gcc_unreachable() (fancy_abort (__FILE__, __LINE__, __FUNCTION__))
 849 #endif
 850
 851 #if GCC_VERSION >= 7000 && defined(__has_attribute)
 852 # if __has_attribute(fallthrough)
 853 #  define gcc_fallthrough() __attribute__((fallthrough))
 854 # else
 855 #  define gcc_fallthrough()
 856 # endif
 857 #else
 858 # define gcc_fallthrough()
 859 #endif
 860
 861 #if GCC_VERSION >= 3001
 862 #define STATIC_CONSTANT_P(X) (__builtin_constant_p (X) && (X))
 863 #else
 864 #define STATIC_CONSTANT_P(X) (false && (X))
 865 #endif
 866
 867 #ifdef __cplusplus
 868 #define STATIC_ASSERT(X) \
 869   static_assert ((X), #X)
 870 #else
 871 #define STATIC_ASSERT(X) \
 872   typedef int assertion1[(X) ? 1 : -1] ATTRIBUTE_UNUSED
 873 #endif
 874
 875 /* Provide a fake boolean type.  We make no attempt to use the
 876    C99 _Bool, as it may not be available in the bootstrap compiler,
 877    and even if it is, it is liable to be buggy.
 878    This must be after all inclusion of system headers, as some of
 879    them will mess us up.  */
 880
 881 #undef TRUE
 882 #undef FALSE
 883
 884 #ifdef __cplusplus
 885   /* Obsolete.  */
 886 # define TRUE true
 887 # define FALSE false
 888 #else /* !__cplusplus */
 889 # undef bool
 890 # undef true
 891 # undef false
 892
 893 # define bool unsigned char
 894 # define true 1
 895 # define false 0
 896
 897   /* Obsolete.  */
 898 # define TRUE true
 899 # define FALSE false
 900 #endif /* !__cplusplus */
 901
 902 /* Some compilers do not allow the use of unsigned char in bitfields.  */
 903 #define BOOL_BITFIELD unsigned int
 904
 905 /* As the last action in this file, we poison the identifiers that
 906    shouldn't be used.  Note, luckily gcc-3.0's token-based integrated
 907    preprocessor won't trip on poisoned identifiers that arrive from
 908    the expansion of macros.  E.g. #define strrchr rindex, won't error
 909    if rindex is poisoned after this directive is issued and later on
 910    strrchr is called.
 911
 912    Note: We define bypass macros for the few cases where we really
 913    want to use the libc memory allocation routines.  Otherwise we
 914    insist you use the "x" versions from libiberty.  */
 915
 916 #define really_call_malloc malloc
 917 #define really_call_calloc calloc
 918 #define really_call_realloc realloc
 919
 920 #if defined(FLEX_SCANNER) || defined(YYBISON) || defined(YYBYACC)
 921 /* Flex and bison use malloc and realloc.  Yuk.  Note that this means
 922    really_call_* cannot be used in a .l or .y file.  */
 923 #define malloc xmalloc
 924 #define realloc xrealloc
 925 #endif
 926
 927 #if (GCC_VERSION >= 3000)
 928
 929 /* Note autoconf checks for prototype declarations and includes
 930    system.h while doing so.  Only poison these tokens if actually
 931    compiling gcc, so that the autoconf declaration tests for malloc
 932    etc don't spuriously fail.  */
 933 #ifdef IN_GCC
 934
 935 #undef calloc
 936 #undef strdup
 937 #undef strndup
 938  #pragma GCC poison calloc strdup strndup
 939
 940 #if !defined(FLEX_SCANNER) && !defined(YYBISON)
 941 #undef malloc
 942 #undef realloc
 943  #pragma GCC poison malloc realloc
 944 #endif
 945
 946 /* The %m format should be used when GCC's main diagnostic functions
 947    supporting %m are available, and xstrerror from libiberty
 948    otherwise.  */
 949 #undef strerror
 950  #pragma GCC poison strerror
 951
 952 /* loc_t is defined on some systems and too inviting for some
 953    programmers to avoid.  */
 954 #undef loc_t
 955  #pragma GCC poison loc_t
 956
 957 /* Old target macros that have moved to the target hooks structure.  */
 958  #pragma GCC poison ASM_OPEN_PAREN ASM_CLOSE_PAREN                      \
 959         FUNCTION_PROLOGUE FUNCTION_EPILOGUE                             \
 960         FUNCTION_END_PROLOGUE FUNCTION_BEGIN_EPILOGUE                   \
 961         DECL_MACHINE_ATTRIBUTES COMP_TYPE_ATTRIBUTES INSERT_ATTRIBUTES  \
 962         VALID_MACHINE_DECL_ATTRIBUTE VALID_MACHINE_TYPE_ATTRIBUTE       \
 963         SET_DEFAULT_TYPE_ATTRIBUTES SET_DEFAULT_DECL_ATTRIBUTES         \
 964         MERGE_MACHINE_TYPE_ATTRIBUTES MERGE_MACHINE_DECL_ATTRIBUTES     \
 965         MD_INIT_BUILTINS MD_EXPAND_BUILTIN ASM_OUTPUT_CONSTRUCTOR       \
 966         ASM_OUTPUT_DESTRUCTOR SIGNED_CHAR_SPEC MAX_CHAR_TYPE_SIZE       \
 967         WCHAR_UNSIGNED UNIQUE_SECTION SELECT_SECTION SELECT_RTX_SECTION \
 968         ENCODE_SECTION_INFO STRIP_NAME_ENCODING ASM_GLOBALIZE_LABEL     \
 969         ASM_OUTPUT_MI_THUNK CONST_COSTS RTX_COSTS DEFAULT_RTX_COSTS     \
 970         ADDRESS_COST MACHINE_DEPENDENT_REORG ASM_FILE_START ASM_FILE_END \
 971         ASM_SIMPLIFY_DWARF_ADDR INIT_TARGET_OPTABS INIT_SUBTARGET_OPTABS \
 972         INIT_GOFAST_OPTABS MULSI3_LIBCALL MULDI3_LIBCALL DIVSI3_LIBCALL \
 973         DIVDI3_LIBCALL UDIVSI3_LIBCALL UDIVDI3_LIBCALL MODSI3_LIBCALL   \
 974         MODDI3_LIBCALL UMODSI3_LIBCALL UMODDI3_LIBCALL BUILD_VA_LIST_TYPE \
 975         PRETEND_OUTGOING_VARARGS_NAMED STRUCT_VALUE_INCOMING_REGNUM     \
 976         ASM_OUTPUT_SECTION_NAME PROMOTE_FUNCTION_ARGS PROMOTE_FUNCTION_MODE \
 977         STRUCT_VALUE_INCOMING STRICT_ARGUMENT_NAMING                    \
 978         PROMOTE_FUNCTION_RETURN PROMOTE_PROTOTYPES STRUCT_VALUE_REGNUM  \
 979         SETUP_INCOMING_VARARGS EXPAND_BUILTIN_SAVEREGS                  \
 980         DEFAULT_SHORT_ENUMS SPLIT_COMPLEX_ARGS MD_ASM_CLOBBERS          \
 981         HANDLE_PRAGMA_REDEFINE_EXTNAME HANDLE_PRAGMA_EXTERN_PREFIX      \
 982         MUST_PASS_IN_STACK FUNCTION_ARG_PASS_BY_REFERENCE               \
 983         VECTOR_MODE_SUPPORTED_P TARGET_SUPPORTS_HIDDEN                  \
 984         FUNCTION_ARG_PARTIAL_NREGS ASM_OUTPUT_DWARF_DTPREL              \
 985         ALLOCATE_INITIAL_VALUE LEGITIMIZE_ADDRESS FRAME_POINTER_REQUIRED \
 986         CAN_ELIMINATE TRAMPOLINE_TEMPLATE INITIALIZE_TRAMPOLINE         \
 987         TRAMPOLINE_ADJUST_ADDRESS STATIC_CHAIN STATIC_CHAIN_INCOMING    \
 988         RETURN_POPS_ARGS UNITS_PER_SIMD_WORD OVERRIDE_OPTIONS           \
 989         OPTIMIZATION_OPTIONS CLASS_LIKELY_SPILLED_P                     \
 990         USING_SJLJ_EXCEPTIONS TARGET_UNWIND_INFO                        \
 991         CAN_DEBUG_WITHOUT_FP UNLIKELY_EXECUTED_TEXT_SECTION_NAME        \
 992         HOT_TEXT_SECTION_NAME LEGITIMATE_CONSTANT_P ALWAYS_STRIP_DOTDOT \
 993         OUTPUT_ADDR_CONST_EXTRA SMALL_REGISTER_CLASSES ASM_OUTPUT_IDENT \
 994         ASM_BYTE_OP MEMBER_TYPE_FORCES_BLK LIBGCC2_HAS_SF_MODE          \
 995         LIBGCC2_HAS_DF_MODE LIBGCC2_HAS_XF_MODE LIBGCC2_HAS_TF_MODE     \
 996         CLEAR_BY_PIECES_P MOVE_BY_PIECES_P SET_BY_PIECES_P              \
 997         STORE_BY_PIECES_P TARGET_FLT_EVAL_METHOD                        \
 998         HARD_REGNO_CALL_PART_CLOBBERED HARD_REGNO_MODE_OK               \
 999         MODES_TIEABLE_P FUNCTION_ARG_PADDING SLOW_UNALIGNED_ACCESS      \
1000         HARD_REGNO_NREGS SECONDARY_MEMORY_NEEDED_MODE                   \
1001         SECONDARY_MEMORY_NEEDED CANNOT_CHANGE_MODE_CLASS                \
1002         TRULY_NOOP_TRUNCATION FUNCTION_ARG_OFFSET CONSTANT_ALIGNMENT    \
1003         STARTING_FRAME_OFFSET
1004
1005 /* Target macros only used for code built for the target, that have
1006    moved to libgcc-tm.h or have never been present elsewhere.  */
1007  #pragma GCC poison DECLARE_LIBRARY_RENAMES LIBGCC2_GNU_PREFIX          \
1008         MD_UNWIND_SUPPORT MD_FROB_UPDATE_CONTEXT ENABLE_EXECUTE_STACK   \
1009         REG_VALUE_IN_UNWIND_CONTEXT ASSUME_EXTENDED_UNWIND_CONTEXT
1010
1011 /* Other obsolete target macros, or macros that used to be in target
1012    headers and were not used, and may be obsolete or may never have
1013    been used.  */
1014  #pragma GCC poison INT_ASM_OP ASM_OUTPUT_EH_REGION_BEG CPP_PREDEFINES     \
1015         ASM_OUTPUT_EH_REGION_END ASM_OUTPUT_LABELREF_AS_INT SMALL_STACK    \
1016         DOESNT_NEED_UNWINDER EH_TABLE_LOOKUP OBJC_SELECTORS_WITHOUT_LABELS \
1017         OMIT_EH_TABLE EASY_DIV_EXPR IMPLICIT_FIX_EXPR                      \
1018         LONGJMP_RESTORE_FROM_STACK MAX_INT_TYPE_SIZE ASM_IDENTIFY_GCC      \
1019         STDC_VALUE TRAMPOLINE_ALIGN ASM_IDENTIFY_GCC_AFTER_SOURCE          \
1020         SLOW_ZERO_EXTEND SUBREG_REGNO_OFFSET DWARF_LINE_MIN_INSTR_LENGTH   \
1021         TRADITIONAL_RETURN_FLOAT NO_BUILTIN_SIZE_TYPE                      \
1022         NO_BUILTIN_PTRDIFF_TYPE NO_BUILTIN_WCHAR_TYPE NO_BUILTIN_WINT_TYPE \
1023         BLOCK_PROFILER BLOCK_PROFILER_CODE FUNCTION_BLOCK_PROFILER         \
1024         FUNCTION_BLOCK_PROFILER_EXIT MACHINE_STATE_SAVE                    \
1025         MACHINE_STATE_RESTORE SCCS_DIRECTIVE SECTION_ASM_OP BYTEORDER      \
1026         ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL HOST_WORDS_BIG_ENDIAN    \
1027         OBJC_PROLOGUE ALLOCATE_TRAMPOLINE HANDLE_PRAGMA ROUND_TYPE_SIZE    \
1028         ROUND_TYPE_SIZE_UNIT CONST_SECTION_ASM_OP CRT_GET_RFIB_TEXT        \
1029         INSN_CACHE_DEPTH INSN_CACHE_SIZE                                   \
1030         INSN_CACHE_LINE_WIDTH INIT_SECTION_PREAMBLE NEED_ATEXIT ON_EXIT    \
1031         EXIT_BODY OBJECT_FORMAT_ROSE MULTIBYTE_CHARS MAP_CHARACTER         \
1032         LIBGCC_NEEDS_DOUBLE FINAL_PRESCAN_LABEL DEFAULT_CALLER_SAVES       \
1033         LOAD_ARGS_REVERSED MAX_INTEGER_COMPUTATION_MODE                    \
1034         CONVERT_HARD_REGISTER_TO_SSA_P ASM_OUTPUT_MAIN_SOURCE_FILENAME     \
1035         FIRST_INSN_ADDRESS TEXT_SECTION SHARED_BSS_SECTION_ASM_OP          \
1036         PROMOTED_MODE EXPAND_BUILTIN_VA_END                                \
1037         LINKER_DOES_NOT_WORK_WITH_DWARF2 FUNCTION_ARG_KEEP_AS_REFERENCE    \
1038         GIV_SORT_CRITERION MAX_LONG_TYPE_SIZE MAX_LONG_DOUBLE_TYPE_SIZE    \
1039         MAX_WCHAR_TYPE_SIZE SHARED_SECTION_ASM_OP INTEGRATE_THRESHOLD      \
1040         FINAL_REG_PARM_STACK_SPACE MAYBE_REG_PARM_STACK_SPACE              \
1041         TRADITIONAL_PIPELINE_INTERFACE DFA_PIPELINE_INTERFACE              \
1042         BUILTIN_SETJMP_FRAME_VALUE                                         \
1043         SUNOS4_SHARED_LIBRARIES PROMOTE_FOR_CALL_ONLY                      \
1044         SPACE_AFTER_L_OPTION NO_RECURSIVE_FUNCTION_CSE                     \
1045         DEFAULT_MAIN_RETURN TARGET_MEM_FUNCTIONS EXPAND_BUILTIN_VA_ARG     \
1046         COLLECT_PARSE_FLAG DWARF2_GENERATE_TEXT_SECTION_LABEL WINNING_GDB  \
1047         ASM_OUTPUT_FILENAME ASM_OUTPUT_SOURCE_LINE FILE_NAME_JOINER        \
1048         GDB_INV_REF_REGPARM_STABS_LETTER                                   \
1049         PUT_SDB_SRC_FILE STABS_GCC_MARKER SDB_GENERATE_FAKE                \
1050         NON_SAVING_SETJMP TARGET_LATE_RTL_PROLOGUE_EPILOGUE                \
1051         CASE_DROPS_THROUGH TARGET_BELL TARGET_BS TARGET_CR TARGET_DIGIT0   \
1052         TARGET_ESC TARGET_FF TARGET_NEWLINE TARGET_TAB TARGET_VT           \
1053         LINK_LIBGCC_SPECIAL DONT_ACCESS_GBLS_AFTER_EPILOGUE                \
1054         TARGET_OPTIONS TARGET_SWITCHES EXTRA_CC_MODES FINALIZE_PIC         \
1055         PREDICATE_CODES SPECIAL_MODE_PREDICATES UNALIGNED_WORD_ASM_OP      \
1056         EXTRA_SECTIONS EXTRA_SECTION_FUNCTIONS READONLY_DATA_SECTION       \
1057         TARGET_ASM_EXCEPTION_SECTION TARGET_ASM_EH_FRAME_SECTION           \
1058         SMALL_ARG_MAX ASM_OUTPUT_SHARED_BSS ASM_OUTPUT_SHARED_COMMON       \
1059         ASM_OUTPUT_SHARED_LOCAL ASM_MAKE_LABEL_LINKONCE                    \
1060         STACK_CHECK_PROBE_INTERVAL STACK_CHECK_PROBE_LOAD                  \
1061         ORDER_REGS_FOR_LOCAL_ALLOC FUNCTION_OUTGOING_VALUE                 \
1062         ASM_DECLARE_CONSTANT_NAME MODIFY_TARGET_NAME SWITCHES_NEED_SPACES  \
1063         SWITCH_CURTAILS_COMPILATION SWITCH_TAKES_ARG WORD_SWITCH_TAKES_ARG \
1064         TARGET_OPTION_TRANSLATE_TABLE HANDLE_PRAGMA_PACK_PUSH_POP          \
1065         HANDLE_SYSV_PRAGMA HANDLE_PRAGMA_WEAK CONDITIONAL_REGISTER_USAGE   \
1066         FUNCTION_ARG_BOUNDARY MUST_USE_SJLJ_EXCEPTIONS US_SOFTWARE_GOFAST  \
1067         USING_SVR4_H SVR4_ASM_SPEC FUNCTION_ARG FUNCTION_ARG_ADVANCE       \
1068         FUNCTION_INCOMING_ARG IRA_COVER_CLASSES TARGET_VERSION             \
1069         MACHINE_TYPE TARGET_HAS_TARGETCM ASM_OUTPUT_BSS                    \
1070         SETJMP_VIA_SAVE_AREA FORBIDDEN_INC_DEC_CLASSES                     \
1071         PREFERRED_OUTPUT_RELOAD_CLASS SYSTEM_INCLUDE_DIR                   \
1072         STANDARD_INCLUDE_DIR STANDARD_INCLUDE_COMPONENT                    \
1073         LINK_ELIMINATE_DUPLICATE_LDIRECTORIES MIPS_DEBUGGING_INFO          \
1074         IDENT_ASM_OP ALL_COP_ADDITIONAL_REGISTER_NAMES                     \
1075         RANGE_TEST_NON_SHORT_CIRCUIT                                       \
1076         REAL_VALUE_TRUNCATE REVERSE_CONDEXEC_PREDICATES_P                  \
1077         TARGET_ALIGN_ANON_BITFIELDS TARGET_NARROW_VOLATILE_BITFIELDS       \
1078         IDENT_ASM_OP UNALIGNED_SHORT_ASM_OP UNALIGNED_INT_ASM_OP           \
1079         UNALIGNED_LONG_ASM_OP UNALIGNED_DOUBLE_INT_ASM_OP                  \
1080         USE_COMMON_FOR_ONE_ONLY IFCVT_EXTRA_FIELDS IFCVT_INIT_EXTRA_FIELDS \
1081         CASE_USE_BIT_TESTS FIXUNS_TRUNC_LIKE_FIX_TRUNC                     \
1082         GO_IF_MODE_DEPENDENT_ADDRESS DELAY_SLOTS_FOR_EPILOGUE              \
1083         ELIGIBLE_FOR_EPILOGUE_DELAY TARGET_C99_FUNCTIONS TARGET_HAS_SINCOS \
1084         REG_CLASS_FROM_LETTER CONST_OK_FOR_LETTER_P                        \
1085         CONST_DOUBLE_OK_FOR_LETTER_P EXTRA_CONSTRAINT                      \
1086         REG_CLASS_FROM_CONSTRAINT REG_CLASS_FOR_CONSTRAINT                 \
1087         EXTRA_CONSTRAINT_STR EXTRA_MEMORY_CONSTRAINT                       \
1088         EXTRA_ADDRESS_CONSTRAINT CONST_DOUBLE_OK_FOR_CONSTRAINT_P          \
1089         CALLER_SAVE_PROFITABLE LARGEST_EXPONENT_IS_NORMAL                  \
1090         ROUND_TOWARDS_ZERO SF_SIZE DF_SIZE XF_SIZE TF_SIZE LIBGCC2_TF_CEXT \
1091         LIBGCC2_LONG_DOUBLE_TYPE_SIZE STRUCT_VALUE                         \
1092         EH_FRAME_IN_DATA_SECTION TARGET_FLT_EVAL_METHOD_NON_DEFAULT        \
1093         JCR_SECTION_NAME TARGET_USE_JCR_SECTION SDB_DEBUGGING_INFO         \
1094         SDB_DEBUG NO_IMPLICIT_EXTERN_C NOTICE_UPDATE_CC                    \
1095         CC_STATUS_MDEP_INIT CC_STATUS_MDEP CC_STATUS SLOW_SHORT_ACCESS
1096
1097 /* Hooks that are no longer used.  */
1098  #pragma GCC poison LANG_HOOKS_FUNCTION_MARK LANG_HOOKS_FUNCTION_FREE   \
1099         LANG_HOOKS_MARK_TREE LANG_HOOKS_INSERT_DEFAULT_ATTRIBUTES \
1100         LANG_HOOKS_TREE_INLINING_ESTIMATE_NUM_INSNS \
1101         LANG_HOOKS_PUSHLEVEL LANG_HOOKS_SET_BLOCK \
1102         LANG_HOOKS_MAYBE_BUILD_CLEANUP LANG_HOOKS_UPDATE_DECL_AFTER_SAVING \
1103         LANG_HOOKS_POPLEVEL LANG_HOOKS_TRUTHVALUE_CONVERSION \
1104         TARGET_PROMOTE_FUNCTION_ARGS TARGET_PROMOTE_FUNCTION_RETURN \
1105         LANG_HOOKS_MISSING_ARGUMENT LANG_HOOKS_HASH_TYPES \
1106         TARGET_HANDLE_OFAST TARGET_OPTION_OPTIMIZATION \
1107         TARGET_IRA_COVER_CLASSES TARGET_HELP \
1108         TARGET_HANDLE_PRAGMA_EXTERN_PREFIX \
1109         TARGET_VECTORIZE_BUILTIN_MUL_WIDEN_EVEN \
1110         TARGET_VECTORIZE_BUILTIN_MUL_WIDEN_ODD \
1111         TARGET_MD_ASM_CLOBBERS TARGET_RELAXED_ORDERING \
1112         EXTENDED_SDB_BASIC_TYPES TARGET_INVALID_PARAMETER_TYPE \
1113         TARGET_INVALID_RETURN_TYPE
1114
1115 /* Arrays that were deleted in favor of a functional interface.  */
1116  #pragma GCC poison built_in_decls implicit_built_in_decls
1117
1118 /* Hooks into libgcc2.  */
1119  #pragma GCC poison LIBGCC2_DOUBLE_TYPE_SIZE LIBGCC2_WORDS_BIG_ENDIAN \
1120    LIBGCC2_FLOAT_WORDS_BIG_ENDIAN
1121
1122 /* Miscellaneous macros that are no longer used.  */
1123  #pragma GCC poison USE_MAPPED_LOCATION GET_ENVIRONMENT
1124
1125 /* Libiberty macros that are no longer used in GCC.  */
1126 #undef ANSI_PROTOTYPES
1127 #undef PTR_CONST
1128 #undef LONG_DOUBLE
1129 #undef VPARAMS
1130 #undef VA_OPEN
1131 #undef VA_FIXEDARG
1132 #undef VA_CLOSE
1133 #undef VA_START
1134  #pragma GCC poison ANSI_PROTOTYPES PTR_CONST LONG_DOUBLE VPARAMS VA_OPEN \
1135   VA_FIXEDARG VA_CLOSE VA_START
1136 #endif /* IN_GCC */
1137
1138 /* Front ends should never have to include middle-end headers.  Enforce
1139    this by poisoning the header double-include protection defines.  */
1140 #ifdef IN_GCC_FRONTEND
1141 #pragma GCC poison GCC_RTL_H GCC_EXCEPT_H GCC_EXPR_H
1142 #endif
1143
1144 /* Note: not all uses of the `index' token (e.g. variable names and
1145    structure members) have been eliminated.  */
1146 #undef bcopy
1147 #undef bzero
1148 #undef bcmp
1149 #undef rindex
1150  #pragma GCC poison bcopy bzero bcmp rindex
1151
1152 /* Poison ENABLE_CHECKING macro that should be replaced with
1153    'if (flag_checking)', or with CHECKING_P macro.  */
1154 #pragma GCC poison ENABLE_CHECKING
1155
1156 #endif /* GCC >= 3.0 */
1157
1158 /* This macro allows casting away const-ness to pass -Wcast-qual
1159    warnings.  DO NOT USE THIS UNLESS YOU REALLY HAVE TO!  It should
1160    only be used in certain specific cases.  One valid case is where
1161    the C standard definitions or prototypes force you to.  E.g. if you
1162    need to free a const object, or if you pass a const string to
1163    execv, et al.  Another valid use would be in an allocation function
1164    that creates const objects that need to be initialized.  In some
1165    cases we have non-const functions that return the argument
1166    (e.g. next_nonnote_insn).  Rather than create const shadow
1167    functions, we can cast away const-ness in calling these interfaces
1168    if we're careful to verify that the called function does indeed not
1169    modify its argument and the return value is only used in a const
1170    context.  (This can be somewhat dangerous as these assumptions can
1171    change after the fact).  Beyond these uses, most other cases of
1172    using this macro should be viewed with extreme caution.  */
1173
1174 #ifdef __cplusplus
1175 #define CONST_CAST2(TOTYPE,FROMTYPE,X) (const_cast<TOTYPE> (X))
1176 #else
1177 #if defined(__GNUC__) && GCC_VERSION > 4000
1178 /* GCC 4.0.x has a bug where it may ICE on this expression,
1179    so does GCC 3.4.x (PR17436).  */
1180 #define CONST_CAST2(TOTYPE,FROMTYPE,X) ((__extension__(union {FROMTYPE _q; TOTYPE _nq;})(X))._nq)
1181 #elif defined(__GNUC__)
1182 inline char *
1183 helper_const_non_const_cast (const char *p)
1184 {
1185   union {
1186     const char *const_c;
1187     char *c;
1188   } val;
1189   val.const_c = p;
1190   return val.c;
1191 }
1192
1193 #define CONST_CAST2(TOTYPE,FROMTYPE,X) \
1194         ((TOTYPE) helper_const_non_const_cast ((const char *) (FROMTYPE) (X)))
1195 #else
1196 #define CONST_CAST2(TOTYPE,FROMTYPE,X) ((TOTYPE)(FROMTYPE)(X))
1197 #endif
1198 #endif
1199 #define CONST_CAST(TYPE,X) CONST_CAST2 (TYPE, const TYPE, (X))
1200 #define CONST_CAST_TREE(X) CONST_CAST (union tree_node *, (X))
1201 #define CONST_CAST_RTX(X) CONST_CAST (struct rtx_def *, (X))
1202 #define CONST_CAST_RTX_INSN(X) CONST_CAST (struct rtx_insn *, (X))
1203 #define CONST_CAST_BB(X) CONST_CAST (struct basic_block_def *, (X))
1204 #define CONST_CAST_GIMPLE(X) CONST_CAST (gimple *, (X))
1205
1206 /* Activate certain diagnostics as warnings (not errors via the
1207    -Werror flag).  */
1208 #if GCC_VERSION >= 4003
1209 /* If asserts are disabled, activate -Wuninitialized as a warning (not
1210    an error/-Werror).  */
1211 #ifndef ENABLE_ASSERT_CHECKING
1212 #pragma GCC diagnostic warning "-Wuninitialized"
1213 #endif
1214 #endif
1215
1216 #ifdef ENABLE_VALGRIND_ANNOTATIONS
1217 #include <valgrind/memcheck.h>
1218 #else
1219 /* VALGRIND_DISCARD unregisters the given block handle,
1220    but our code misuses it for discarding annotations.  */
1221 #define VALGRIND_DISCARD(x)
1222 #endif
1223
1224 /* Macros to temporarily ignore some warnings.  */
1225 #if GCC_VERSION >= 6000
1226 #define GCC_DIAGNOSTIC_STRINGIFY(x) #x
1227 #define GCC_DIAGNOSTIC_PUSH_IGNORED(x) \
1228   _Pragma ("GCC diagnostic push") \
1229   _Pragma (GCC_DIAGNOSTIC_STRINGIFY (GCC diagnostic ignored #x))
1230 #define GCC_DIAGNOSTIC_POP _Pragma ("GCC diagnostic pop")
1231 #else
1232 #define GCC_DIAGNOSTIC_PUSH_IGNORED(x)
1233 #define GCC_DIAGNOSTIC_POP
1234 #endif
1235
1236 /* In LTO -fwhole-program build we still want to keep the debug functions available
1237    for debugger.  Mark them as used to prevent removal.  */
1238 #if (GCC_VERSION > 4000)
1239 #define DEBUG_FUNCTION __attribute__ ((__used__))
1240 #define DEBUG_VARIABLE __attribute__ ((__used__))
1241 #else
1242 #define DEBUG_FUNCTION
1243 #define DEBUG_VARIABLE
1244 #endif
1245
1246 /* General macro to extract bit Y of X.  */
1247 #define TEST_BIT(X, Y) (((X) >> (Y)) & 1)
1248
1249 /* Get definitions of HOST_WIDE_INT.  */
1250 #include "hwint.h"
1251
1252 typedef int sort_r_cmp_fn (const void *, const void *, void *);
1253 void qsort_chk (void *, size_t, size_t, sort_r_cmp_fn *, void *);
1254 void gcc_sort_r (void *, size_t, size_t, sort_r_cmp_fn *, void *);
1255 void gcc_qsort (void *, size_t, size_t, int (*)(const void *, const void *));
1256 void gcc_stablesort (void *, size_t, size_t,
1257                      int (*)(const void *, const void *));
1258 void gcc_stablesort_r (void *, size_t, size_t, sort_r_cmp_fn *, void *data);
1259 /* Redirect four-argument qsort calls to gcc_qsort; one-argument invocations
1260    correspond to vec::qsort, and use C qsort internally.  */
1261 #define PP_5th(a1, a2, a3, a4, a5, ...) a5
1262 #undef qsort
1263 #define qsort(...) PP_5th (__VA_ARGS__, gcc_qsort, 3, 2, qsort, 0) (__VA_ARGS__)
1264
1265 #define ONE_K 1024
1266 #define ONE_M (ONE_K * ONE_K)
1267 #define ONE_G (ONE_K * ONE_M)
1268
1269 /* Display a number as an integer multiple of either:
1270    - 1024, if said integer is >= to 10 K (in base 2)
1271    - 1024 * 1024, if said integer is >= 10 M in (base 2)
1272  */
1273 #define SIZE_SCALE(x) (((x) < 10 * ONE_K \
1274                         ? (x) \
1275                         : ((x) < 10 * ONE_M \
1276                            ? (x) / ONE_K \
1277                            : (x) / ONE_M)))
1278
1279 /* For a given integer, display either:
1280    - the character 'k', if the number is higher than 10 K (in base 2)
1281      but strictly lower than 10 M (in base 2)
1282    - the character 'M' if the number is higher than 10 M (in base2)
1283    - the charcter ' ' if the number is strictly lower  than 10 K  */
1284 #define SIZE_LABEL(x) ((x) < 10 * ONE_K ? ' ' : ((x) < 10 * ONE_M ? 'k' : 'M'))
1285
1286 /* Display an integer amount as multiple of 1K or 1M (in base 2).
1287    Display the correct unit (either k, M, or ' ') after the amount, as
1288    well.  */
1289 #define SIZE_AMOUNT(size) (uint64_t)SIZE_SCALE (size), SIZE_LABEL (size)
1290
1291 /* Format string particle for printing a SIZE_AMOUNT with N being the width
1292    of the number.  */
1293 #define PRsa(n) "%" #n PRIu64 "%c"
1294
1295 /* System headers may define NULL to be an integer (e.g. 0L), which cannot be
1296    used safely in certain contexts (e.g. as sentinels).  Redefine NULL to
1297    nullptr in order to make it safer.  Note that this might confuse system
1298    headers, however, by convention they must not be included after this point.
1299 */
1300 #ifdef __cplusplus
1301 #undef NULL
1302 #define NULL nullptr
1303 #endif
1304
1305 /* Workaround clang on PowerPC which has vec_step as reserved keyword
1306    rather than function-like macro defined in <altivec.h>.  See PR114369.  */
1307 #if defined(__clang__) && defined(__powerpc__)
1308 #define vec_step vec_step_
1309 #endif
1310
1311 /* Return true if STR string starts with PREFIX.  */
1312
1313 inline bool
1314 startswith (const char *str, const char *prefix)
1315 {
1316   return strncmp (str, prefix, strlen (prefix)) == 0;
1317 }
1318
1319 /* Return true if STR string ends with SUFFIX.  */
1320
1321 inline bool
1322 endswith (const char *str, const char *suffix)
1323 {
1324   size_t str_len = strlen (str);
1325   size_t suffix_len = strlen (suffix);
1326   if (str_len < suffix_len)
1327     return false;
1328
1329   return memcmp (str + str_len - suffix_len, suffix, suffix_len) == 0;
1330 }
1331
1332 #endif /* ! GCC_SYSTEM_H */