1 /* Get common system includes and various definitions and declarations based 2 on autoconf macros. 3 Copyright (C) 1998-2018 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 #endif 239 240 /* Some of glibc's string inlines cause warnings. Plus we'd rather 241 rely on (and therefore test) GCC's string builtins. */ 242 #define __NO_STRING_INLINES 243 244 #ifdef STRING_WITH_STRINGS 245 # include <string.h> 246 # include <strings.h> 247 #else 248 # ifdef HAVE_STRING_H 249 # include <string.h> 250 # else 251 # ifdef HAVE_STRINGS_H 252 # include <strings.h> 253 # endif 254 # endif 255 #endif 256 257 #ifdef HAVE_STDLIB_H 258 # include <stdlib.h> 259 #endif 260 261 /* When compiling C++ we need to include <cstdlib> as well as <stdlib.h> so 262 that it is processed before we poison "malloc"; otherwise, if a source 263 file uses a standard library header that includes <cstdlib>, we will get 264 an error about 'using std::malloc'. */ 265 #ifdef __cplusplus 266 #include <cstdlib> 267 #endif 268 269 /* Undef vec_free from AIX stdlib.h header which conflicts with vec.h. */ 270 #undef vec_free 271 272 /* If we don't have an overriding definition, set SUCCESS_EXIT_CODE and 273 FATAL_EXIT_CODE to EXIT_SUCCESS and EXIT_FAILURE respectively, 274 or 0 and 1 if those macros are not defined. */ 275 #ifndef SUCCESS_EXIT_CODE 276 # ifdef EXIT_SUCCESS 277 # define SUCCESS_EXIT_CODE EXIT_SUCCESS 278 # else 279 # define SUCCESS_EXIT_CODE 0 280 # endif 281 #endif 282 283 #ifndef FATAL_EXIT_CODE 284 # ifdef EXIT_FAILURE 285 # define FATAL_EXIT_CODE EXIT_FAILURE 286 # else 287 # define FATAL_EXIT_CODE 1 288 # endif 289 #endif 290 291 #define ICE_EXIT_CODE 4 292 293 #ifdef HAVE_UNISTD_H 294 # include <unistd.h> 295 #endif 296 297 #ifdef HAVE_SYS_PARAM_H 298 # include <sys/param.h> 299 /* We use these identifiers later and they appear in some vendor param.h's. */ 300 # undef PREFETCH 301 # undef m_slot 302 #endif 303 304 #if HAVE_LIMITS_H 305 # include <limits.h> 306 #endif 307 308 /* A macro to determine whether a VALUE lies inclusively within a 309 certain range without evaluating the VALUE more than once. This 310 macro won't warn if the VALUE is unsigned and the LOWER bound is 311 zero, as it would e.g. with "VALUE >= 0 && ...". Note the LOWER 312 bound *is* evaluated twice, and LOWER must not be greater than 313 UPPER. However the bounds themselves can be either positive or 314 negative. */ 315 #define IN_RANGE(VALUE, LOWER, UPPER) \ 316 ((unsigned HOST_WIDE_INT) (VALUE) - (unsigned HOST_WIDE_INT) (LOWER) \ 317 <= (unsigned HOST_WIDE_INT) (UPPER) - (unsigned HOST_WIDE_INT) (LOWER)) 318 319 /* Infrastructure for defining missing _MAX and _MIN macros. Note that 320 macros defined with these cannot be used in #if. */ 321 322 /* The extra casts work around common compiler bugs. */ 323 #define INTTYPE_SIGNED(t) (! ((t) 0 < (t) -1)) 324 /* The outer cast is needed to work around a bug in Cray C 5.0.3.0. 325 It is necessary at least when t == time_t. */ 326 #define INTTYPE_MINIMUM(t) ((t) (INTTYPE_SIGNED (t) \ 327 ? (t) 1 << (sizeof (t) * CHAR_BIT - 1) : (t) 0)) 328 #define INTTYPE_MAXIMUM(t) ((t) (~ (t) 0 - INTTYPE_MINIMUM (t))) 329 330 /* Use that infrastructure to provide a few constants. */ 331 #ifndef UCHAR_MAX 332 # define UCHAR_MAX INTTYPE_MAXIMUM (unsigned char) 333 #endif 334 335 #ifdef TIME_WITH_SYS_TIME 336 # include <sys/time.h> 337 # include <time.h> 338 #else 339 # if HAVE_SYS_TIME_H 340 # include <sys/time.h> 341 # else 342 # ifdef HAVE_TIME_H 343 # include <time.h> 344 # endif 345 # endif 346 #endif 347 348 #ifdef HAVE_FCNTL_H 349 # include <fcntl.h> 350 #else 351 # ifdef HAVE_SYS_FILE_H 352 # include <sys/file.h> 353 # endif 354 #endif 355 356 #ifndef SEEK_SET 357 # define SEEK_SET 0 358 # define SEEK_CUR 1 359 # define SEEK_END 2 360 #endif 361 #ifndef F_OK 362 # define F_OK 0 363 # define X_OK 1 364 # define W_OK 2 365 # define R_OK 4 366 #endif 367 #ifndef O_RDONLY 368 # define O_RDONLY 0 369 #endif 370 #ifndef O_WRONLY 371 # define O_WRONLY 1 372 #endif 373 #ifndef O_BINARY 374 # define O_BINARY 0 375 #endif 376 377 /* Some systems define these in, e.g., param.h. We undefine these names 378 here to avoid the warnings. We prefer to use our definitions since we 379 know they are correct. */ 380 381 #undef MIN 382 #undef MAX 383 #define MIN(X,Y) ((X) < (Y) ? (X) : (Y)) 384 #define MAX(X,Y) ((X) > (Y) ? (X) : (Y)) 385 386 /* Returns the least number N such that N * Y >= X. */ 387 #define CEIL(x,y) (((x) + (y) - 1) / (y)) 388 389 /* This macro rounds x up to the y boundary. */ 390 #define ROUND_UP(x,y) (((x) + (y) - 1) & ~((y) - 1)) 391 392 /* This macro rounds x down to the y boundary. */ 393 #define ROUND_DOWN(x,y) ((x) & ~((y) - 1)) 394 395 #ifdef HAVE_SYS_WAIT_H 396 #include <sys/wait.h> 397 #endif 398 399 #ifndef WIFSIGNALED 400 #define WIFSIGNALED(S) (((S) & 0xff) != 0 && ((S) & 0xff) != 0x7f) 401 #endif 402 #ifndef WTERMSIG 403 #define WTERMSIG(S) ((S) & 0x7f) 404 #endif 405 #ifndef WIFEXITED 406 #define WIFEXITED(S) (((S) & 0xff) == 0) 407 #endif 408 #ifndef WEXITSTATUS 409 #define WEXITSTATUS(S) (((S) & 0xff00) >> 8) 410 #endif 411 #ifndef WSTOPSIG 412 #define WSTOPSIG WEXITSTATUS 413 #endif 414 #ifndef WCOREDUMP 415 #define WCOREDUMP(S) ((S) & WCOREFLG) 416 #endif 417 #ifndef WCOREFLG 418 #define WCOREFLG 0200 419 #endif 420 421 #include <signal.h> 422 #if !defined (SIGCHLD) && defined (SIGCLD) 423 # define SIGCHLD SIGCLD 424 #endif 425 426 #ifdef HAVE_SYS_MMAN_H 427 # include <sys/mman.h> 428 #endif 429 430 #ifndef MAP_FAILED 431 # define MAP_FAILED ((void *)-1) 432 #endif 433 434 #if !defined (MAP_ANONYMOUS) && defined (MAP_ANON) 435 # define MAP_ANONYMOUS MAP_ANON 436 #endif 437 438 #ifdef HAVE_SYS_RESOURCE_H 439 # include <sys/resource.h> 440 #endif 441 442 #ifdef HAVE_SYS_TIMES_H 443 # include <sys/times.h> 444 #endif 445 446 /* The HAVE_DECL_* macros are three-state, undefined, 0 or 1. If they 447 are defined to 0 then we must provide the relevant declaration 448 here. These checks will be in the undefined state while configure 449 is running so be careful to test "defined (HAVE_DECL_*)". */ 450 451 #ifdef __cplusplus 452 extern "C" { 453 #endif 454 455 #if defined (HAVE_DECL_ATOF) && !HAVE_DECL_ATOF 456 extern double atof (const char *); 457 #endif 458 459 #if defined (HAVE_DECL_ATOL) && !HAVE_DECL_ATOL 460 extern long atol (const char *); 461 #endif 462 463 #if defined (HAVE_DECL_FREE) && !HAVE_DECL_FREE 464 extern void free (void *); 465 #endif 466 467 #if defined (HAVE_DECL_GETCWD) && !HAVE_DECL_GETCWD 468 extern char *getcwd (char *, size_t); 469 #endif 470 471 #if defined (HAVE_DECL_GETENV) && !HAVE_DECL_GETENV 472 extern char *getenv (const char *); 473 #endif 474 475 #if defined (HAVE_DECL_GETOPT) && !HAVE_DECL_GETOPT 476 extern int getopt (int, char * const *, const char *); 477 #endif 478 479 #if defined (HAVE_DECL_GETPAGESIZE) && !HAVE_DECL_GETPAGESIZE 480 extern int getpagesize (void); 481 #endif 482 483 #if defined (HAVE_DECL_GETWD) && !HAVE_DECL_GETWD 484 extern char *getwd (char *); 485 #endif 486 487 #if defined (HAVE_DECL_SBRK) && !HAVE_DECL_SBRK 488 extern void *sbrk (int); 489 #endif 490 491 #if defined (HAVE_DECL_SETENV) && !HAVE_DECL_SETENV 492 int setenv(const char *, const char *, int); 493 #endif 494 495 #if defined (HAVE_DECL_STRSTR) && !HAVE_DECL_STRSTR 496 extern char *strstr (const char *, const char *); 497 #endif 498 499 #if defined (HAVE_DECL_STPCPY) && !HAVE_DECL_STPCPY 500 extern char *stpcpy (char *, const char *); 501 #endif 502 503 #if defined (HAVE_DECL_UNSETENV) && !HAVE_DECL_UNSETENV 504 int unsetenv(const char *); 505 #endif 506 507 #if defined (HAVE_DECL_MALLOC) && !HAVE_DECL_MALLOC 508 extern void *malloc (size_t); 509 #endif 510 511 #if defined (HAVE_DECL_CALLOC) && !HAVE_DECL_CALLOC 512 extern void *calloc (size_t, size_t); 513 #endif 514 515 #if defined (HAVE_DECL_REALLOC) && !HAVE_DECL_REALLOC 516 extern void *realloc (void *, size_t); 517 #endif 518 519 #ifdef __cplusplus 520 } 521 #endif 522 523 #ifdef HAVE_STDINT_H 524 #include <stdint.h> 525 #endif 526 527 #ifdef HAVE_INTTYPES_H 528 #include <inttypes.h> 529 #endif 530 531 #ifdef __cplusplus 532 extern "C" { 533 #endif 534 535 /* If the system doesn't provide strsignal, we get it defined in 536 libiberty but no declaration is supplied. */ 537 #if !defined (HAVE_STRSIGNAL) \ 538 || (defined (HAVE_DECL_STRSIGNAL) && !HAVE_DECL_STRSIGNAL) 539 # ifndef strsignal 540 extern const char *strsignal (int); 541 # endif 542 #endif 543 544 #ifdef HAVE_GETRLIMIT 545 # if defined (HAVE_DECL_GETRLIMIT) && !HAVE_DECL_GETRLIMIT 546 # ifndef getrlimit 547 struct rlimit; 548 extern int getrlimit (int, struct rlimit *); 549 # endif 550 # endif 551 #endif 552 553 #ifdef HAVE_SETRLIMIT 554 # if defined (HAVE_DECL_SETRLIMIT) && !HAVE_DECL_SETRLIMIT 555 # ifndef setrlimit 556 struct rlimit; 557 extern int setrlimit (int, const struct rlimit *); 558 # endif 559 # endif 560 #endif 561 562 #if defined (HAVE_DECL_ABORT) && !HAVE_DECL_ABORT 563 extern void abort (void); 564 #endif 565 566 #if defined (HAVE_DECL_SNPRINTF) && !HAVE_DECL_SNPRINTF 567 extern int snprintf (char *, size_t, const char *, ...); 568 #endif 569 570 #if defined (HAVE_DECL_VSNPRINTF) && !HAVE_DECL_VSNPRINTF 571 extern int vsnprintf (char *, size_t, const char *, va_list); 572 #endif 573 574 #ifdef __cplusplus 575 } 576 #endif 577 578 /* 1 if we have C99 designated initializers. */ 579 #if !defined(HAVE_DESIGNATED_INITIALIZERS) 580 #ifdef __cplusplus 581 #define HAVE_DESIGNATED_INITIALIZERS 0 582 #else 583 #define HAVE_DESIGNATED_INITIALIZERS \ 584 ((GCC_VERSION >= 2007) || (__STDC_VERSION__ >= 199901L)) 585 #endif 586 #endif 587 588 #if !defined(HAVE_DESIGNATED_UNION_INITIALIZERS) 589 #ifdef __cplusplus 590 #define HAVE_DESIGNATED_UNION_INITIALIZERS (GCC_VERSION >= 4007) 591 #else 592 #define HAVE_DESIGNATED_UNION_INITIALIZERS \ 593 ((GCC_VERSION >= 2007) || (__STDC_VERSION__ >= 199901L)) 594 #endif 595 #endif 596 597 #if HAVE_SYS_STAT_H 598 # include <sys/stat.h> 599 #endif 600 601 /* Test if something is a normal file. */ 602 #ifndef S_ISREG 603 #define S_ISREG(m) (((m) & S_IFMT) == S_IFREG) 604 #endif 605 606 /* Test if something is a directory. */ 607 #ifndef S_ISDIR 608 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR) 609 #endif 610 611 /* Test if something is a character special file. */ 612 #ifndef S_ISCHR 613 #define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR) 614 #endif 615 616 /* Test if something is a block special file. */ 617 #ifndef S_ISBLK 618 #define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK) 619 #endif 620 621 /* Test if something is a socket. */ 622 #ifndef S_ISSOCK 623 # ifdef S_IFSOCK 624 # define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK) 625 # else 626 # define S_ISSOCK(m) 0 627 # endif 628 #endif 629 630 /* Test if something is a FIFO. */ 631 #ifndef S_ISFIFO 632 # ifdef S_IFIFO 633 # define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO) 634 # else 635 # define S_ISFIFO(m) 0 636 # endif 637 #endif 638 639 /* Define well known filenos if the system does not define them. */ 640 #ifndef STDIN_FILENO 641 # define STDIN_FILENO 0 642 #endif 643 #ifndef STDOUT_FILENO 644 # define STDOUT_FILENO 1 645 #endif 646 #ifndef STDERR_FILENO 647 # define STDERR_FILENO 2 648 #endif 649 650 /* Some systems have mkdir that takes a single argument. */ 651 #ifdef MKDIR_TAKES_ONE_ARG 652 # define mkdir(a,b) mkdir (a) 653 #endif 654 655 #ifndef HAVE_KILL 656 # define kill(p,s) raise (s) 657 #endif 658 659 /* Provide a way to print an address via printf. */ 660 #ifndef HOST_PTR_PRINTF 661 #define HOST_PTR_PRINTF "%p" 662 #endif /* ! HOST_PTR_PRINTF */ 663 664 /* By default, colon separates directories in a path. */ 665 #ifndef PATH_SEPARATOR 666 #define PATH_SEPARATOR ':' 667 #endif 668 669 /* Filename handling macros. */ 670 #include "filenames.h" 671 672 /* These should be phased out in favor of IS_DIR_SEPARATOR, where possible. */ 673 #ifndef DIR_SEPARATOR 674 # define DIR_SEPARATOR '/' 675 # ifdef HAVE_DOS_BASED_FILE_SYSTEM 676 # define DIR_SEPARATOR_2 '\\' 677 # endif 678 #endif 679 680 #if defined (ENABLE_PLUGIN) && defined (HAVE_DLFCN_H) 681 /* If plugin support is enabled, we could use libdl. */ 682 #include <dlfcn.h> 683 #endif 684 685 /* Do not introduce a gmp.h dependency on the build system. */ 686 #ifndef GENERATOR_FILE 687 #include <gmp.h> 688 #endif 689 690 /* Get libiberty declarations. */ 691 #include "libiberty.h" 692 693 #undef FFS /* Some systems predefine this symbol; don't let it interfere. */ 694 #undef FLOAT /* Likewise. */ 695 #undef ABS /* Likewise. */ 696 #undef PC /* Likewise. */ 697 698 /* Provide a default for the HOST_BIT_BUCKET. 699 This suffices for POSIX-like hosts. */ 700 701 #ifndef HOST_BIT_BUCKET 702 #define HOST_BIT_BUCKET "/dev/null" 703 #endif 704 705 #ifndef offsetof 706 #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *) 0)->MEMBER) 707 #endif 708 709 /* Various error reporting routines want to use __FUNCTION__. */ 710 #if (GCC_VERSION < 2007) 711 #ifndef __FUNCTION__ 712 #define __FUNCTION__ "?" 713 #endif /* ! __FUNCTION__ */ 714 #endif 715 716 /* __builtin_expect(A, B) evaluates to A, but notifies the compiler that 717 the most likely value of A is B. This feature was added at some point 718 between 2.95 and 3.0. Let's use 3.0 as the lower bound for now. */ 719 #if (GCC_VERSION < 3000) 720 #define __builtin_expect(a, b) (a) 721 #endif 722 723 /* Some of the headers included by <memory> can use "abort" within a 724 namespace, e.g. "_VSTD::abort();", which fails after we use the 725 preprocessor to redefine "abort" as "fancy_abort" below. 726 Given that unique-ptr.h can use "free", we need to do this after "free" 727 is declared but before "abort" is overridden. */ 728 729 #ifdef INCLUDE_UNIQUE_PTR 730 # include "unique-ptr.h" 731 #endif 732 733 /* Redefine abort to report an internal error w/o coredump, and 734 reporting the location of the error in the source file. */ 735 extern void fancy_abort (const char *, int, const char *) 736 ATTRIBUTE_NORETURN ATTRIBUTE_COLD; 737 #define abort() fancy_abort (__FILE__, __LINE__, __FUNCTION__) 738 739 /* Use gcc_assert(EXPR) to test invariants. */ 740 #if ENABLE_ASSERT_CHECKING 741 #define gcc_assert(EXPR) \ 742 ((void)(!(EXPR) ? fancy_abort (__FILE__, __LINE__, __FUNCTION__), 0 : 0)) 743 #elif (GCC_VERSION >= 4005) 744 #define gcc_assert(EXPR) \ 745 ((void)(__builtin_expect (!(EXPR), 0) ? __builtin_unreachable (), 0 : 0)) 746 #else 747 /* Include EXPR, so that unused variable warnings do not occur. */ 748 #define gcc_assert(EXPR) ((void)(0 && (EXPR))) 749 #endif 750 751 #if CHECKING_P 752 #define gcc_checking_assert(EXPR) gcc_assert (EXPR) 753 #else 754 /* N.B.: in release build EXPR is not evaluated. */ 755 #define gcc_checking_assert(EXPR) ((void)(0 && (EXPR))) 756 #endif 757 758 #if GCC_VERSION >= 4000 759 #define ALWAYS_INLINE inline __attribute__ ((always_inline)) 760 #else 761 #define ALWAYS_INLINE inline 762 #endif 763 764 /* Use gcc_unreachable() to mark unreachable locations (like an 765 unreachable default case of a switch. Do not use gcc_assert(0). */ 766 #if (GCC_VERSION >= 4005) && !ENABLE_ASSERT_CHECKING 767 #define gcc_unreachable() __builtin_unreachable () 768 #else 769 #define gcc_unreachable() (fancy_abort (__FILE__, __LINE__, __FUNCTION__)) 770 #endif 771 772 #if GCC_VERSION >= 7000 && defined(__has_attribute) 773 # if __has_attribute(fallthrough) 774 # define gcc_fallthrough() __attribute__((fallthrough)) 775 # else 776 # define gcc_fallthrough() 777 # endif 778 #else 779 # define gcc_fallthrough() 780 #endif 781 782 #if GCC_VERSION >= 3001 783 #define STATIC_CONSTANT_P(X) (__builtin_constant_p (X) && (X)) 784 #else 785 #define STATIC_CONSTANT_P(X) (false && (X)) 786 #endif 787 788 /* static_assert (COND, MESSAGE) is available in C++11 onwards. */ 789 #if __cplusplus >= 201103L 790 #define STATIC_ASSERT(X) \ 791 static_assert ((X), #X) 792 #else 793 #define STATIC_ASSERT(X) \ 794 typedef int assertion1[(X) ? 1 : -1] ATTRIBUTE_UNUSED 795 #endif 796 797 /* Provide a fake boolean type. We make no attempt to use the 798 C99 _Bool, as it may not be available in the bootstrap compiler, 799 and even if it is, it is liable to be buggy. 800 This must be after all inclusion of system headers, as some of 801 them will mess us up. */ 802 803 #undef TRUE 804 #undef FALSE 805 806 #ifdef __cplusplus 807 /* Obsolete. */ 808 # define TRUE true 809 # define FALSE false 810 #else /* !__cplusplus */ 811 # undef bool 812 # undef true 813 # undef false 814 815 # define bool unsigned char 816 # define true 1 817 # define false 0 818 819 /* Obsolete. */ 820 # define TRUE true 821 # define FALSE false 822 #endif /* !__cplusplus */ 823 824 /* Some compilers do not allow the use of unsigned char in bitfields. */ 825 #define BOOL_BITFIELD unsigned int 826 827 /* GCC older than 4.4 have broken C++ value initialization handling, see 828 PR11309, PR30111, PR33916, PR82939 and PR84405 for more details. */ 829 #if GCC_VERSION > 0 && GCC_VERSION < 4004 && !defined(__clang__) 830 # define BROKEN_VALUE_INITIALIZATION 831 #endif 832 833 /* As the last action in this file, we poison the identifiers that 834 shouldn't be used. Note, luckily gcc-3.0's token-based integrated 835 preprocessor won't trip on poisoned identifiers that arrive from 836 the expansion of macros. E.g. #define strrchr rindex, won't error 837 if rindex is poisoned after this directive is issued and later on 838 strrchr is called. 839 840 Note: We define bypass macros for the few cases where we really 841 want to use the libc memory allocation routines. Otherwise we 842 insist you use the "x" versions from libiberty. */ 843 844 #define really_call_malloc malloc 845 #define really_call_calloc calloc 846 #define really_call_realloc realloc 847 848 #if defined(FLEX_SCANNER) || defined(YYBISON) || defined(YYBYACC) 849 /* Flex and bison use malloc and realloc. Yuk. Note that this means 850 really_call_* cannot be used in a .l or .y file. */ 851 #define malloc xmalloc 852 #define realloc xrealloc 853 #endif 854 855 #if (GCC_VERSION >= 3000) 856 857 /* Note autoconf checks for prototype declarations and includes 858 system.h while doing so. Only poison these tokens if actually 859 compiling gcc, so that the autoconf declaration tests for malloc 860 etc don't spuriously fail. */ 861 #ifdef IN_GCC 862 863 #ifndef USES_ISL 864 #undef calloc 865 #undef strdup 866 #undef strndup 867 #pragma GCC poison calloc strdup strndup 868 #endif 869 870 #if !defined(FLEX_SCANNER) && !defined(YYBISON) 871 #undef malloc 872 #undef realloc 873 #pragma GCC poison malloc realloc 874 #endif 875 876 /* The %m format should be used when GCC's main diagnostic functions 877 supporting %m are available, and xstrerror from libiberty 878 otherwise. */ 879 #undef strerror 880 #pragma GCC poison strerror 881 882 /* loc_t is defined on some systems and too inviting for some 883 programmers to avoid. */ 884 #undef loc_t 885 #pragma GCC poison loc_t 886 887 /* Old target macros that have moved to the target hooks structure. */ 888 #pragma GCC poison ASM_OPEN_PAREN ASM_CLOSE_PAREN \ 889 FUNCTION_PROLOGUE FUNCTION_EPILOGUE \ 890 FUNCTION_END_PROLOGUE FUNCTION_BEGIN_EPILOGUE \ 891 DECL_MACHINE_ATTRIBUTES COMP_TYPE_ATTRIBUTES INSERT_ATTRIBUTES \ 892 VALID_MACHINE_DECL_ATTRIBUTE VALID_MACHINE_TYPE_ATTRIBUTE \ 893 SET_DEFAULT_TYPE_ATTRIBUTES SET_DEFAULT_DECL_ATTRIBUTES \ 894 MERGE_MACHINE_TYPE_ATTRIBUTES MERGE_MACHINE_DECL_ATTRIBUTES \ 895 MD_INIT_BUILTINS MD_EXPAND_BUILTIN ASM_OUTPUT_CONSTRUCTOR \ 896 ASM_OUTPUT_DESTRUCTOR SIGNED_CHAR_SPEC MAX_CHAR_TYPE_SIZE \ 897 WCHAR_UNSIGNED UNIQUE_SECTION SELECT_SECTION SELECT_RTX_SECTION \ 898 ENCODE_SECTION_INFO STRIP_NAME_ENCODING ASM_GLOBALIZE_LABEL \ 899 ASM_OUTPUT_MI_THUNK CONST_COSTS RTX_COSTS DEFAULT_RTX_COSTS \ 900 ADDRESS_COST MACHINE_DEPENDENT_REORG ASM_FILE_START ASM_FILE_END \ 901 ASM_SIMPLIFY_DWARF_ADDR INIT_TARGET_OPTABS INIT_SUBTARGET_OPTABS \ 902 INIT_GOFAST_OPTABS MULSI3_LIBCALL MULDI3_LIBCALL DIVSI3_LIBCALL \ 903 DIVDI3_LIBCALL UDIVSI3_LIBCALL UDIVDI3_LIBCALL MODSI3_LIBCALL \ 904 MODDI3_LIBCALL UMODSI3_LIBCALL UMODDI3_LIBCALL BUILD_VA_LIST_TYPE \ 905 PRETEND_OUTGOING_VARARGS_NAMED STRUCT_VALUE_INCOMING_REGNUM \ 906 ASM_OUTPUT_SECTION_NAME PROMOTE_FUNCTION_ARGS PROMOTE_FUNCTION_MODE \ 907 STRUCT_VALUE_INCOMING STRICT_ARGUMENT_NAMING \ 908 PROMOTE_FUNCTION_RETURN PROMOTE_PROTOTYPES STRUCT_VALUE_REGNUM \ 909 SETUP_INCOMING_VARARGS EXPAND_BUILTIN_SAVEREGS \ 910 DEFAULT_SHORT_ENUMS SPLIT_COMPLEX_ARGS MD_ASM_CLOBBERS \ 911 HANDLE_PRAGMA_REDEFINE_EXTNAME HANDLE_PRAGMA_EXTERN_PREFIX \ 912 MUST_PASS_IN_STACK FUNCTION_ARG_PASS_BY_REFERENCE \ 913 VECTOR_MODE_SUPPORTED_P TARGET_SUPPORTS_HIDDEN \ 914 FUNCTION_ARG_PARTIAL_NREGS ASM_OUTPUT_DWARF_DTPREL \ 915 ALLOCATE_INITIAL_VALUE LEGITIMIZE_ADDRESS FRAME_POINTER_REQUIRED \ 916 CAN_ELIMINATE TRAMPOLINE_TEMPLATE INITIALIZE_TRAMPOLINE \ 917 TRAMPOLINE_ADJUST_ADDRESS STATIC_CHAIN STATIC_CHAIN_INCOMING \ 918 RETURN_POPS_ARGS UNITS_PER_SIMD_WORD OVERRIDE_OPTIONS \ 919 OPTIMIZATION_OPTIONS CLASS_LIKELY_SPILLED_P \ 920 USING_SJLJ_EXCEPTIONS TARGET_UNWIND_INFO \ 921 LABEL_ALIGN_MAX_SKIP LOOP_ALIGN_MAX_SKIP \ 922 LABEL_ALIGN_AFTER_BARRIER_MAX_SKIP JUMP_ALIGN_MAX_SKIP \ 923 CAN_DEBUG_WITHOUT_FP UNLIKELY_EXECUTED_TEXT_SECTION_NAME \ 924 HOT_TEXT_SECTION_NAME LEGITIMATE_CONSTANT_P ALWAYS_STRIP_DOTDOT \ 925 OUTPUT_ADDR_CONST_EXTRA SMALL_REGISTER_CLASSES ASM_OUTPUT_IDENT \ 926 ASM_BYTE_OP MEMBER_TYPE_FORCES_BLK LIBGCC2_HAS_SF_MODE \ 927 LIBGCC2_HAS_DF_MODE LIBGCC2_HAS_XF_MODE LIBGCC2_HAS_TF_MODE \ 928 CLEAR_BY_PIECES_P MOVE_BY_PIECES_P SET_BY_PIECES_P \ 929 STORE_BY_PIECES_P TARGET_FLT_EVAL_METHOD \ 930 HARD_REGNO_CALL_PART_CLOBBERED HARD_REGNO_MODE_OK \ 931 MODES_TIEABLE_P FUNCTION_ARG_PADDING SLOW_UNALIGNED_ACCESS \ 932 HARD_REGNO_NREGS SECONDARY_MEMORY_NEEDED_MODE \ 933 SECONDARY_MEMORY_NEEDED CANNOT_CHANGE_MODE_CLASS \ 934 TRULY_NOOP_TRUNCATION FUNCTION_ARG_OFFSET CONSTANT_ALIGNMENT \ 935 STARTING_FRAME_OFFSET 936 937 /* Target macros only used for code built for the target, that have 938 moved to libgcc-tm.h or have never been present elsewhere. */ 939 #pragma GCC poison DECLARE_LIBRARY_RENAMES LIBGCC2_GNU_PREFIX \ 940 MD_UNWIND_SUPPORT MD_FROB_UPDATE_CONTEXT ENABLE_EXECUTE_STACK \ 941 REG_VALUE_IN_UNWIND_CONTEXT ASSUME_EXTENDED_UNWIND_CONTEXT 942 943 /* Other obsolete target macros, or macros that used to be in target 944 headers and were not used, and may be obsolete or may never have 945 been used. */ 946 #pragma GCC poison INT_ASM_OP ASM_OUTPUT_EH_REGION_BEG CPP_PREDEFINES \ 947 ASM_OUTPUT_EH_REGION_END ASM_OUTPUT_LABELREF_AS_INT SMALL_STACK \ 948 DOESNT_NEED_UNWINDER EH_TABLE_LOOKUP OBJC_SELECTORS_WITHOUT_LABELS \ 949 OMIT_EH_TABLE EASY_DIV_EXPR IMPLICIT_FIX_EXPR \ 950 LONGJMP_RESTORE_FROM_STACK MAX_INT_TYPE_SIZE ASM_IDENTIFY_GCC \ 951 STDC_VALUE TRAMPOLINE_ALIGN ASM_IDENTIFY_GCC_AFTER_SOURCE \ 952 SLOW_ZERO_EXTEND SUBREG_REGNO_OFFSET DWARF_LINE_MIN_INSTR_LENGTH \ 953 TRADITIONAL_RETURN_FLOAT NO_BUILTIN_SIZE_TYPE \ 954 NO_BUILTIN_PTRDIFF_TYPE NO_BUILTIN_WCHAR_TYPE NO_BUILTIN_WINT_TYPE \ 955 BLOCK_PROFILER BLOCK_PROFILER_CODE FUNCTION_BLOCK_PROFILER \ 956 FUNCTION_BLOCK_PROFILER_EXIT MACHINE_STATE_SAVE \ 957 MACHINE_STATE_RESTORE SCCS_DIRECTIVE SECTION_ASM_OP BYTEORDER \ 958 ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL HOST_WORDS_BIG_ENDIAN \ 959 OBJC_PROLOGUE ALLOCATE_TRAMPOLINE HANDLE_PRAGMA ROUND_TYPE_SIZE \ 960 ROUND_TYPE_SIZE_UNIT CONST_SECTION_ASM_OP CRT_GET_RFIB_TEXT \ 961 DBX_LBRAC_FIRST DBX_OUTPUT_ENUM DBX_OUTPUT_SOURCE_FILENAME \ 962 DBX_WORKING_DIRECTORY INSN_CACHE_DEPTH INSN_CACHE_SIZE \ 963 INSN_CACHE_LINE_WIDTH INIT_SECTION_PREAMBLE NEED_ATEXIT ON_EXIT \ 964 EXIT_BODY OBJECT_FORMAT_ROSE MULTIBYTE_CHARS MAP_CHARACTER \ 965 LIBGCC_NEEDS_DOUBLE FINAL_PRESCAN_LABEL DEFAULT_CALLER_SAVES \ 966 LOAD_ARGS_REVERSED MAX_INTEGER_COMPUTATION_MODE \ 967 CONVERT_HARD_REGISTER_TO_SSA_P ASM_OUTPUT_MAIN_SOURCE_FILENAME \ 968 FIRST_INSN_ADDRESS TEXT_SECTION SHARED_BSS_SECTION_ASM_OP \ 969 PROMOTED_MODE EXPAND_BUILTIN_VA_END \ 970 LINKER_DOES_NOT_WORK_WITH_DWARF2 FUNCTION_ARG_KEEP_AS_REFERENCE \ 971 GIV_SORT_CRITERION MAX_LONG_TYPE_SIZE MAX_LONG_DOUBLE_TYPE_SIZE \ 972 MAX_WCHAR_TYPE_SIZE SHARED_SECTION_ASM_OP INTEGRATE_THRESHOLD \ 973 FINAL_REG_PARM_STACK_SPACE MAYBE_REG_PARM_STACK_SPACE \ 974 TRADITIONAL_PIPELINE_INTERFACE DFA_PIPELINE_INTERFACE \ 975 DBX_OUTPUT_STANDARD_TYPES BUILTIN_SETJMP_FRAME_VALUE \ 976 SUNOS4_SHARED_LIBRARIES PROMOTE_FOR_CALL_ONLY \ 977 SPACE_AFTER_L_OPTION NO_RECURSIVE_FUNCTION_CSE \ 978 DEFAULT_MAIN_RETURN TARGET_MEM_FUNCTIONS EXPAND_BUILTIN_VA_ARG \ 979 COLLECT_PARSE_FLAG DWARF2_GENERATE_TEXT_SECTION_LABEL WINNING_GDB \ 980 ASM_OUTPUT_FILENAME ASM_OUTPUT_SOURCE_LINE FILE_NAME_JOINER \ 981 GDB_INV_REF_REGPARM_STABS_LETTER DBX_MEMPARM_STABS_LETTER \ 982 PUT_SDB_SRC_FILE STABS_GCC_MARKER DBX_OUTPUT_FUNCTION_END \ 983 DBX_OUTPUT_GCC_MARKER DBX_FINISH_SYMBOL SDB_GENERATE_FAKE \ 984 NON_SAVING_SETJMP TARGET_LATE_RTL_PROLOGUE_EPILOGUE \ 985 CASE_DROPS_THROUGH TARGET_BELL TARGET_BS TARGET_CR TARGET_DIGIT0 \ 986 TARGET_ESC TARGET_FF TARGET_NEWLINE TARGET_TAB TARGET_VT \ 987 LINK_LIBGCC_SPECIAL DONT_ACCESS_GBLS_AFTER_EPILOGUE \ 988 TARGET_OPTIONS TARGET_SWITCHES EXTRA_CC_MODES FINALIZE_PIC \ 989 PREDICATE_CODES SPECIAL_MODE_PREDICATES UNALIGNED_WORD_ASM_OP \ 990 EXTRA_SECTIONS EXTRA_SECTION_FUNCTIONS READONLY_DATA_SECTION \ 991 TARGET_ASM_EXCEPTION_SECTION TARGET_ASM_EH_FRAME_SECTION \ 992 SMALL_ARG_MAX ASM_OUTPUT_SHARED_BSS ASM_OUTPUT_SHARED_COMMON \ 993 ASM_OUTPUT_SHARED_LOCAL ASM_MAKE_LABEL_LINKONCE \ 994 STACK_CHECK_PROBE_INTERVAL STACK_CHECK_PROBE_LOAD \ 995 ORDER_REGS_FOR_LOCAL_ALLOC FUNCTION_OUTGOING_VALUE \ 996 ASM_DECLARE_CONSTANT_NAME MODIFY_TARGET_NAME SWITCHES_NEED_SPACES \ 997 SWITCH_CURTAILS_COMPILATION SWITCH_TAKES_ARG WORD_SWITCH_TAKES_ARG \ 998 TARGET_OPTION_TRANSLATE_TABLE HANDLE_PRAGMA_PACK_PUSH_POP \ 999 HANDLE_SYSV_PRAGMA HANDLE_PRAGMA_WEAK CONDITIONAL_REGISTER_USAGE \ 1000 FUNCTION_ARG_BOUNDARY MUST_USE_SJLJ_EXCEPTIONS US_SOFTWARE_GOFAST \ 1001 USING_SVR4_H SVR4_ASM_SPEC FUNCTION_ARG FUNCTION_ARG_ADVANCE \ 1002 FUNCTION_INCOMING_ARG IRA_COVER_CLASSES TARGET_VERSION \ 1003 MACHINE_TYPE TARGET_HAS_TARGETCM ASM_OUTPUT_BSS \ 1004 SETJMP_VIA_SAVE_AREA FORBIDDEN_INC_DEC_CLASSES \ 1005 PREFERRED_OUTPUT_RELOAD_CLASS SYSTEM_INCLUDE_DIR \ 1006 STANDARD_INCLUDE_DIR STANDARD_INCLUDE_COMPONENT \ 1007 LINK_ELIMINATE_DUPLICATE_LDIRECTORIES MIPS_DEBUGGING_INFO \ 1008 IDENT_ASM_OP ALL_COP_ADDITIONAL_REGISTER_NAMES DBX_OUTPUT_LBRAC \ 1009 DBX_OUTPUT_NFUN DBX_OUTPUT_RBRAC RANGE_TEST_NON_SHORT_CIRCUIT \ 1010 REAL_VALUE_TRUNCATE REVERSE_CONDEXEC_PREDICATES_P \ 1011 TARGET_ALIGN_ANON_BITFIELDS TARGET_NARROW_VOLATILE_BITFIELDS \ 1012 IDENT_ASM_OP UNALIGNED_SHORT_ASM_OP UNALIGNED_INT_ASM_OP \ 1013 UNALIGNED_LONG_ASM_OP UNALIGNED_DOUBLE_INT_ASM_OP \ 1014 USE_COMMON_FOR_ONE_ONLY IFCVT_EXTRA_FIELDS IFCVT_INIT_EXTRA_FIELDS \ 1015 CASE_USE_BIT_TESTS FIXUNS_TRUNC_LIKE_FIX_TRUNC \ 1016 GO_IF_MODE_DEPENDENT_ADDRESS DELAY_SLOTS_FOR_EPILOGUE \ 1017 ELIGIBLE_FOR_EPILOGUE_DELAY TARGET_C99_FUNCTIONS TARGET_HAS_SINCOS \ 1018 REG_CLASS_FROM_LETTER CONST_OK_FOR_LETTER_P \ 1019 CONST_DOUBLE_OK_FOR_LETTER_P EXTRA_CONSTRAINT \ 1020 REG_CLASS_FROM_CONSTRAINT REG_CLASS_FOR_CONSTRAINT \ 1021 EXTRA_CONSTRAINT_STR EXTRA_MEMORY_CONSTRAINT \ 1022 EXTRA_ADDRESS_CONSTRAINT CONST_DOUBLE_OK_FOR_CONSTRAINT_P \ 1023 CALLER_SAVE_PROFITABLE LARGEST_EXPONENT_IS_NORMAL \ 1024 ROUND_TOWARDS_ZERO SF_SIZE DF_SIZE XF_SIZE TF_SIZE LIBGCC2_TF_CEXT \ 1025 LIBGCC2_LONG_DOUBLE_TYPE_SIZE STRUCT_VALUE \ 1026 EH_FRAME_IN_DATA_SECTION TARGET_FLT_EVAL_METHOD_NON_DEFAULT \ 1027 JCR_SECTION_NAME TARGET_USE_JCR_SECTION SDB_DEBUGGING_INFO \ 1028 SDB_DEBUG 1029 1030 /* Hooks that are no longer used. */ 1031 #pragma GCC poison LANG_HOOKS_FUNCTION_MARK LANG_HOOKS_FUNCTION_FREE \ 1032 LANG_HOOKS_MARK_TREE LANG_HOOKS_INSERT_DEFAULT_ATTRIBUTES \ 1033 LANG_HOOKS_TREE_INLINING_ESTIMATE_NUM_INSNS \ 1034 LANG_HOOKS_PUSHLEVEL LANG_HOOKS_SET_BLOCK \ 1035 LANG_HOOKS_MAYBE_BUILD_CLEANUP LANG_HOOKS_UPDATE_DECL_AFTER_SAVING \ 1036 LANG_HOOKS_POPLEVEL LANG_HOOKS_TRUTHVALUE_CONVERSION \ 1037 TARGET_PROMOTE_FUNCTION_ARGS TARGET_PROMOTE_FUNCTION_RETURN \ 1038 LANG_HOOKS_MISSING_ARGUMENT LANG_HOOKS_HASH_TYPES \ 1039 TARGET_HANDLE_OFAST TARGET_OPTION_OPTIMIZATION \ 1040 TARGET_IRA_COVER_CLASSES TARGET_HELP \ 1041 TARGET_HANDLE_PRAGMA_EXTERN_PREFIX \ 1042 TARGET_VECTORIZE_BUILTIN_MUL_WIDEN_EVEN \ 1043 TARGET_VECTORIZE_BUILTIN_MUL_WIDEN_ODD \ 1044 TARGET_MD_ASM_CLOBBERS TARGET_RELAXED_ORDERING \ 1045 EXTENDED_SDB_BASIC_TYPES TARGET_INVALID_PARAMETER_TYPE \ 1046 TARGET_INVALID_RETURN_TYPE 1047 1048 /* Arrays that were deleted in favor of a functional interface. */ 1049 #pragma GCC poison built_in_decls implicit_built_in_decls 1050 1051 /* Hooks into libgcc2. */ 1052 #pragma GCC poison LIBGCC2_DOUBLE_TYPE_SIZE LIBGCC2_WORDS_BIG_ENDIAN \ 1053 LIBGCC2_FLOAT_WORDS_BIG_ENDIAN 1054 1055 /* Miscellaneous macros that are no longer used. */ 1056 #pragma GCC poison USE_MAPPED_LOCATION GET_ENVIRONMENT 1057 1058 /* Libiberty macros that are no longer used in GCC. */ 1059 #undef ANSI_PROTOTYPES 1060 #undef PTR_CONST 1061 #undef LONG_DOUBLE 1062 #undef VPARAMS 1063 #undef VA_OPEN 1064 #undef VA_FIXEDARG 1065 #undef VA_CLOSE 1066 #undef VA_START 1067 #pragma GCC poison ANSI_PROTOTYPES PTR_CONST LONG_DOUBLE VPARAMS VA_OPEN \ 1068 VA_FIXEDARG VA_CLOSE VA_START 1069 #endif /* IN_GCC */ 1070 1071 /* Front ends should never have to include middle-end headers. Enforce 1072 this by poisoning the header double-include protection defines. */ 1073 #ifdef IN_GCC_FRONTEND 1074 #pragma GCC poison GCC_RTL_H GCC_EXCEPT_H GCC_EXPR_H 1075 #endif 1076 1077 /* Note: not all uses of the `index' token (e.g. variable names and 1078 structure members) have been eliminated. */ 1079 #undef bcopy 1080 #undef bzero 1081 #undef bcmp 1082 #undef rindex 1083 #pragma GCC poison bcopy bzero bcmp rindex 1084 1085 /* Poison ENABLE_CHECKING macro that should be replaced with 1086 'if (flag_checking)', or with CHECKING_P macro. */ 1087 #pragma GCC poison ENABLE_CHECKING 1088 1089 #endif /* GCC >= 3.0 */ 1090 1091 /* This macro allows casting away const-ness to pass -Wcast-qual 1092 warnings. DO NOT USE THIS UNLESS YOU REALLY HAVE TO! It should 1093 only be used in certain specific cases. One valid case is where 1094 the C standard definitions or prototypes force you to. E.g. if you 1095 need to free a const object, or if you pass a const string to 1096 execv, et al. Another valid use would be in an allocation function 1097 that creates const objects that need to be initialized. In some 1098 cases we have non-const functions that return the argument 1099 (e.g. next_nonnote_insn). Rather than create const shadow 1100 functions, we can cast away const-ness in calling these interfaces 1101 if we're careful to verify that the called function does indeed not 1102 modify its argument and the return value is only used in a const 1103 context. (This can be somewhat dangerous as these assumptions can 1104 change after the fact). Beyond these uses, most other cases of 1105 using this macro should be viewed with extreme caution. */ 1106 1107 #ifdef __cplusplus 1108 #define CONST_CAST2(TOTYPE,FROMTYPE,X) (const_cast<TOTYPE> (X)) 1109 #else 1110 #if defined(__GNUC__) && GCC_VERSION > 4000 1111 /* GCC 4.0.x has a bug where it may ICE on this expression, 1112 so does GCC 3.4.x (PR17436). */ 1113 #define CONST_CAST2(TOTYPE,FROMTYPE,X) ((__extension__(union {FROMTYPE _q; TOTYPE _nq;})(X))._nq) 1114 #elif defined(__GNUC__) 1115 static inline char * 1116 helper_const_non_const_cast (const char *p) 1117 { 1118 union { 1119 const char *const_c; 1120 char *c; 1121 } val; 1122 val.const_c = p; 1123 return val.c; 1124 } 1125 1126 #define CONST_CAST2(TOTYPE,FROMTYPE,X) \ 1127 ((TOTYPE) helper_const_non_const_cast ((const char *) (FROMTYPE) (X))) 1128 #else 1129 #define CONST_CAST2(TOTYPE,FROMTYPE,X) ((TOTYPE)(FROMTYPE)(X)) 1130 #endif 1131 #endif 1132 #define CONST_CAST(TYPE,X) CONST_CAST2 (TYPE, const TYPE, (X)) 1133 #define CONST_CAST_TREE(X) CONST_CAST (union tree_node *, (X)) 1134 #define CONST_CAST_RTX(X) CONST_CAST (struct rtx_def *, (X)) 1135 #define CONST_CAST_RTX_INSN(X) CONST_CAST (struct rtx_insn *, (X)) 1136 #define CONST_CAST_BB(X) CONST_CAST (struct basic_block_def *, (X)) 1137 #define CONST_CAST_GIMPLE(X) CONST_CAST (gimple *, (X)) 1138 1139 /* Activate certain diagnostics as warnings (not errors via the 1140 -Werror flag). */ 1141 #if GCC_VERSION >= 4003 1142 /* If asserts are disabled, activate -Wuninitialized as a warning (not 1143 an error/-Werror). */ 1144 #ifndef ENABLE_ASSERT_CHECKING 1145 #pragma GCC diagnostic warning "-Wuninitialized" 1146 #endif 1147 #endif 1148 1149 #ifdef ENABLE_VALGRIND_ANNOTATIONS 1150 # ifdef HAVE_VALGRIND_MEMCHECK_H 1151 # include <valgrind/memcheck.h> 1152 # elif defined HAVE_MEMCHECK_H 1153 # include <memcheck.h> 1154 # else 1155 # include <valgrind.h> 1156 # endif 1157 /* Compatibility macros to let valgrind 3.1 work. */ 1158 # ifndef VALGRIND_MAKE_MEM_NOACCESS 1159 # define VALGRIND_MAKE_MEM_NOACCESS VALGRIND_MAKE_NOACCESS 1160 # endif 1161 # ifndef VALGRIND_MAKE_MEM_DEFINED 1162 # define VALGRIND_MAKE_MEM_DEFINED VALGRIND_MAKE_READABLE 1163 # endif 1164 # ifndef VALGRIND_MAKE_MEM_UNDEFINED 1165 # define VALGRIND_MAKE_MEM_UNDEFINED VALGRIND_MAKE_WRITABLE 1166 # endif 1167 #else 1168 /* Avoid #ifdef:s when we can help it. */ 1169 #define VALGRIND_DISCARD(x) 1170 #define VALGRIND_MALLOCLIKE_BLOCK(w,x,y,z) 1171 #define VALGRIND_FREELIKE_BLOCK(x,y) 1172 #endif 1173 1174 /* Macros to temporarily ignore some warnings. */ 1175 #if GCC_VERSION >= 6000 1176 #define GCC_DIAGNOSTIC_STRINGIFY(x) #x 1177 #define GCC_DIAGNOSTIC_PUSH_IGNORED(x) \ 1178 _Pragma ("GCC diagnostic push") \ 1179 _Pragma (GCC_DIAGNOSTIC_STRINGIFY (GCC diagnostic ignored #x)) 1180 #define GCC_DIAGNOSTIC_POP _Pragma ("GCC diagnostic pop") 1181 #else 1182 #define GCC_DIAGNOSTIC_PUSH_IGNORED(x) 1183 #define GCC_DIAGNOSTIC_POP 1184 #endif 1185 1186 /* In LTO -fwhole-program build we still want to keep the debug functions available 1187 for debugger. Mark them as used to prevent removal. */ 1188 #if (GCC_VERSION > 4000) 1189 #define DEBUG_FUNCTION __attribute__ ((__used__)) 1190 #define DEBUG_VARIABLE __attribute__ ((__used__)) 1191 #else 1192 #define DEBUG_FUNCTION 1193 #define DEBUG_VARIABLE 1194 #endif 1195 1196 /* General macro to extract bit Y of X. */ 1197 #define TEST_BIT(X, Y) (((X) >> (Y)) & 1) 1198 1199 /* Get definitions of HOST_WIDE_INT. */ 1200 #include "hwint.h" 1201 1202 /* qsort comparator consistency checking: except in release-checking compilers, 1203 redirect 4-argument qsort calls to qsort_chk; keep 1-argument invocations 1204 corresponding to vec::qsort (cmp): they use C qsort internally anyway. */ 1205 #if CHECKING_P 1206 #define PP_5th(a1, a2, a3, a4, a5, ...) a5 1207 #undef qsort 1208 #define qsort(...) PP_5th (__VA_ARGS__, qsort_chk, 3, 2, qsort, 0) (__VA_ARGS__) 1209 void qsort_chk (void *, size_t, size_t, int (*)(const void *, const void *)); 1210 #endif 1211 1212 #endif /* ! GCC_SYSTEM_H */ 1213