1 /* Get common system includes and various definitions and declarations based 2 on autoconf macros. 3 Copyright (C) 1998-2020 Free Software Foundation, Inc. 4 5 This file is part of GCC. 6 7 GCC is free software; you can redistribute it and/or modify it under 8 the terms of the GNU General Public License as published by the Free 9 Software Foundation; either version 3, or (at your option) any later 10 version. 11 12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY 13 WARRANTY; without even the implied warranty of MERCHANTABILITY or 14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 15 for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with GCC; see the file COPYING3. If not see 19 <http://www.gnu.org/licenses/>. */ 20 21 22 #ifndef GCC_SYSTEM_H 23 #define GCC_SYSTEM_H 24 25 /* Define this so that inttypes.h defines the PRI?64 macros even 26 when compiling with a C++ compiler. Define it here so in the 27 event inttypes.h gets pulled in by another header it is already 28 defined. */ 29 #define __STDC_FORMAT_MACROS 30 31 /* We must include stdarg.h before stdio.h. */ 32 #include <stdarg.h> 33 34 #ifndef va_copy 35 # ifdef __va_copy 36 # define va_copy(d,s) __va_copy (d, s) 37 # else 38 # define va_copy(d,s) ((d) = (s)) 39 # endif 40 #endif 41 42 #ifdef HAVE_STDDEF_H 43 # include <stddef.h> 44 #endif 45 46 #ifndef GENERATOR_FILE 47 #ifdef __cplusplus 48 # include <cstdio> 49 #endif 50 #endif 51 52 #include <stdio.h> 53 54 /* Define a generic NULL if one hasn't already been defined. */ 55 #ifndef NULL 56 #define NULL 0 57 #endif 58 59 /* Use the unlocked open routines from libiberty. */ 60 61 /* Some of these are #define on some systems, e.g. on AIX to redirect 62 the names to 64bit capable functions for LARGE_FILES support. These 63 redefs are pointless here so we can override them. */ 64 65 #undef fopen 66 #undef freopen 67 68 #define fopen(PATH, MODE) fopen_unlocked (PATH, MODE) 69 #define fdopen(FILDES, MODE) fdopen_unlocked (FILDES, MODE) 70 #define freopen(PATH, MODE, STREAM) freopen_unlocked (PATH, MODE, STREAM) 71 72 /* The compiler is not a multi-threaded application and therefore we 73 do not have to use the locking functions. In fact, using the locking 74 functions can cause the compiler to be significantly slower under 75 I/O bound conditions (such as -g -O0 on very large source files). 76 77 HAVE_DECL_PUTC_UNLOCKED actually indicates whether or not the stdio 78 code is multi-thread safe by default. If it is set to 0, then do 79 not worry about using the _unlocked functions. 80 81 fputs_unlocked, fwrite_unlocked, and fprintf_unlocked are 82 extensions and need to be prototyped by hand (since we do not 83 define _GNU_SOURCE). */ 84 85 #if defined HAVE_DECL_PUTC_UNLOCKED && HAVE_DECL_PUTC_UNLOCKED 86 87 # ifdef HAVE_PUTC_UNLOCKED 88 # undef putc 89 # define putc(C, Stream) putc_unlocked (C, Stream) 90 # endif 91 # ifdef HAVE_PUTCHAR_UNLOCKED 92 # undef putchar 93 # define putchar(C) putchar_unlocked (C) 94 # endif 95 # ifdef HAVE_GETC_UNLOCKED 96 # undef getc 97 # define getc(Stream) getc_unlocked (Stream) 98 # endif 99 # ifdef HAVE_GETCHAR_UNLOCKED 100 # undef getchar 101 # define getchar() getchar_unlocked () 102 # endif 103 # ifdef HAVE_FPUTC_UNLOCKED 104 # undef fputc 105 # define fputc(C, Stream) fputc_unlocked (C, Stream) 106 # endif 107 108 #ifdef __cplusplus 109 extern "C" { 110 #endif 111 112 # ifdef HAVE_CLEARERR_UNLOCKED 113 # undef clearerr 114 # define clearerr(Stream) clearerr_unlocked (Stream) 115 # if defined (HAVE_DECL_CLEARERR_UNLOCKED) && !HAVE_DECL_CLEARERR_UNLOCKED 116 extern void clearerr_unlocked (FILE *); 117 # endif 118 # endif 119 # ifdef HAVE_FEOF_UNLOCKED 120 # undef feof 121 # define feof(Stream) feof_unlocked (Stream) 122 # if defined (HAVE_DECL_FEOF_UNLOCKED) && !HAVE_DECL_FEOF_UNLOCKED 123 extern int feof_unlocked (FILE *); 124 # endif 125 # endif 126 # ifdef HAVE_FILENO_UNLOCKED 127 # undef fileno 128 # define fileno(Stream) fileno_unlocked (Stream) 129 # if defined (HAVE_DECL_FILENO_UNLOCKED) && !HAVE_DECL_FILENO_UNLOCKED 130 extern int fileno_unlocked (FILE *); 131 # endif 132 # endif 133 # ifdef HAVE_FFLUSH_UNLOCKED 134 # undef fflush 135 # define fflush(Stream) fflush_unlocked (Stream) 136 # if defined (HAVE_DECL_FFLUSH_UNLOCKED) && !HAVE_DECL_FFLUSH_UNLOCKED 137 extern int fflush_unlocked (FILE *); 138 # endif 139 # endif 140 # ifdef HAVE_FGETC_UNLOCKED 141 # undef fgetc 142 # define fgetc(Stream) fgetc_unlocked (Stream) 143 # if defined (HAVE_DECL_FGETC_UNLOCKED) && !HAVE_DECL_FGETC_UNLOCKED 144 extern int fgetc_unlocked (FILE *); 145 # endif 146 # endif 147 # ifdef HAVE_FGETS_UNLOCKED 148 # undef fgets 149 # define fgets(S, n, Stream) fgets_unlocked (S, n, Stream) 150 # if defined (HAVE_DECL_FGETS_UNLOCKED) && !HAVE_DECL_FGETS_UNLOCKED 151 extern char *fgets_unlocked (char *, int, FILE *); 152 # endif 153 # endif 154 # ifdef HAVE_FPUTS_UNLOCKED 155 # undef fputs 156 # define fputs(String, Stream) fputs_unlocked (String, Stream) 157 # if defined (HAVE_DECL_FPUTS_UNLOCKED) && !HAVE_DECL_FPUTS_UNLOCKED 158 extern int fputs_unlocked (const char *, FILE *); 159 # endif 160 # endif 161 # ifdef HAVE_FERROR_UNLOCKED 162 # undef ferror 163 # define ferror(Stream) ferror_unlocked (Stream) 164 # if defined (HAVE_DECL_FERROR_UNLOCKED) && !HAVE_DECL_FERROR_UNLOCKED 165 extern int ferror_unlocked (FILE *); 166 # endif 167 # endif 168 # ifdef HAVE_FREAD_UNLOCKED 169 # undef fread 170 # define fread(Ptr, Size, N, Stream) fread_unlocked (Ptr, Size, N, Stream) 171 # if defined (HAVE_DECL_FREAD_UNLOCKED) && !HAVE_DECL_FREAD_UNLOCKED 172 extern size_t fread_unlocked (void *, size_t, size_t, FILE *); 173 # endif 174 # endif 175 # ifdef HAVE_FWRITE_UNLOCKED 176 # undef fwrite 177 # define fwrite(Ptr, Size, N, Stream) fwrite_unlocked (Ptr, Size, N, Stream) 178 # if defined (HAVE_DECL_FWRITE_UNLOCKED) && !HAVE_DECL_FWRITE_UNLOCKED 179 extern size_t fwrite_unlocked (const void *, size_t, size_t, FILE *); 180 # endif 181 # endif 182 # ifdef HAVE_FPRINTF_UNLOCKED 183 # undef fprintf 184 /* We can't use a function-like macro here because we don't know if 185 we have varargs macros. */ 186 # define fprintf fprintf_unlocked 187 # if defined (HAVE_DECL_FPRINTF_UNLOCKED) && !HAVE_DECL_FPRINTF_UNLOCKED 188 extern int fprintf_unlocked (FILE *, const char *, ...); 189 # endif 190 # endif 191 192 #ifdef __cplusplus 193 } 194 #endif 195 196 #endif 197 198 /* ??? Glibc's fwrite/fread_unlocked macros cause 199 "warning: signed and unsigned type in conditional expression". */ 200 #undef fread_unlocked 201 #undef fwrite_unlocked 202 203 /* Include <string> before "safe-ctype.h" to avoid GCC poisoning 204 the ctype macros through safe-ctype.h */ 205 206 #ifdef __cplusplus 207 #ifdef INCLUDE_STRING 208 # include <string> 209 #endif 210 #endif 211 212 /* There are an extraordinary number of issues with <ctype.h>. 213 The last straw is that it varies with the locale. Use libiberty's 214 replacement instead. */ 215 #include "safe-ctype.h" 216 217 #include <sys/types.h> 218 219 #include <errno.h> 220 221 #if !defined (errno) && defined (HAVE_DECL_ERRNO) && !HAVE_DECL_ERRNO 222 extern int errno; 223 #endif 224 225 #ifdef __cplusplus 226 #if defined (INCLUDE_ALGORITHM) || !defined (HAVE_SWAP_IN_UTILITY) 227 # include <algorithm> 228 #endif 229 #ifdef INCLUDE_LIST 230 # include <list> 231 #endif 232 #ifdef INCLUDE_MAP 233 # include <map> 234 #endif 235 #ifdef INCLUDE_SET 236 # include <set> 237 #endif 238 #ifdef INCLUDE_VECTOR 239 # include <vector> 240 #endif 241 # include <cstring> 242 # include <new> 243 # include <utility> 244 #endif 245 246 /* Some of glibc's string inlines cause warnings. Plus we'd rather 247 rely on (and therefore test) GCC's string builtins. */ 248 #define __NO_STRING_INLINES 249 250 #ifdef STRING_WITH_STRINGS 251 # include <string.h> 252 # include <strings.h> 253 #else 254 # ifdef HAVE_STRING_H 255 # include <string.h> 256 # else 257 # ifdef HAVE_STRINGS_H 258 # include <strings.h> 259 # endif 260 # endif 261 #endif 262 263 #ifdef HAVE_STDLIB_H 264 # include <stdlib.h> 265 #endif 266 267 /* When compiling C++ we need to include <cstdlib> as well as <stdlib.h> so 268 that it is processed before we poison "malloc"; otherwise, if a source 269 file uses a standard library header that includes <cstdlib>, we will get 270 an error about 'using std::malloc'. */ 271 #ifdef __cplusplus 272 #include <cstdlib> 273 #endif 274 275 /* Undef vec_free from AIX stdlib.h header which conflicts with vec.h. */ 276 #undef vec_free 277 278 /* If we don't have an overriding definition, set SUCCESS_EXIT_CODE and 279 FATAL_EXIT_CODE to EXIT_SUCCESS and EXIT_FAILURE respectively, 280 or 0 and 1 if those macros are not defined. */ 281 #ifndef SUCCESS_EXIT_CODE 282 # ifdef EXIT_SUCCESS 283 # define SUCCESS_EXIT_CODE EXIT_SUCCESS 284 # else 285 # define SUCCESS_EXIT_CODE 0 286 # endif 287 #endif 288 289 #ifndef FATAL_EXIT_CODE 290 # ifdef EXIT_FAILURE 291 # define FATAL_EXIT_CODE EXIT_FAILURE 292 # else 293 # define FATAL_EXIT_CODE 1 294 # endif 295 #endif 296 297 #define ICE_EXIT_CODE 4 298 299 #ifdef HAVE_UNISTD_H 300 # include <unistd.h> 301 #endif 302 303 #ifdef HAVE_SYS_PARAM_H 304 # include <sys/param.h> 305 /* We use these identifiers later and they appear in some vendor param.h's. */ 306 # undef PREFETCH 307 # undef m_slot 308 #endif 309 310 #if HAVE_LIMITS_H 311 # include <limits.h> 312 #endif 313 314 /* A macro to determine whether a VALUE lies inclusively within a 315 certain range without evaluating the VALUE more than once. This 316 macro won't warn if the VALUE is unsigned and the LOWER bound is 317 zero, as it would e.g. with "VALUE >= 0 && ...". Note the LOWER 318 bound *is* evaluated twice, and LOWER must not be greater than 319 UPPER. However the bounds themselves can be either positive or 320 negative. */ 321 #define IN_RANGE(VALUE, LOWER, UPPER) \ 322 ((unsigned HOST_WIDE_INT) (VALUE) - (unsigned HOST_WIDE_INT) (LOWER) \ 323 <= (unsigned HOST_WIDE_INT) (UPPER) - (unsigned HOST_WIDE_INT) (LOWER)) 324 325 /* Infrastructure for defining missing _MAX and _MIN macros. Note that 326 macros defined with these cannot be used in #if. */ 327 328 /* The extra casts work around common compiler bugs. */ 329 #define INTTYPE_SIGNED(t) (! ((t) 0 < (t) -1)) 330 /* The outer cast is needed to work around a bug in Cray C 5.0.3.0. 331 It is necessary at least when t == time_t. */ 332 #define INTTYPE_MINIMUM(t) ((t) (INTTYPE_SIGNED (t) \ 333 ? (t) 1 << (sizeof (t) * CHAR_BIT - 1) : (t) 0)) 334 #define INTTYPE_MAXIMUM(t) ((t) (~ (t) 0 - INTTYPE_MINIMUM (t))) 335 336 /* Use that infrastructure to provide a few constants. */ 337 #ifndef UCHAR_MAX 338 # define UCHAR_MAX INTTYPE_MAXIMUM (unsigned char) 339 #endif 340 341 #ifdef TIME_WITH_SYS_TIME 342 # include <sys/time.h> 343 # include <time.h> 344 #else 345 # if HAVE_SYS_TIME_H 346 # include <sys/time.h> 347 # else 348 # ifdef HAVE_TIME_H 349 # include <time.h> 350 # endif 351 # endif 352 #endif 353 354 #ifdef HAVE_FCNTL_H 355 # include <fcntl.h> 356 #else 357 # ifdef HAVE_SYS_FILE_H 358 # include <sys/file.h> 359 # endif 360 #endif 361 362 #ifndef SEEK_SET 363 # define SEEK_SET 0 364 # define SEEK_CUR 1 365 # define SEEK_END 2 366 #endif 367 #ifndef F_OK 368 # define F_OK 0 369 # define X_OK 1 370 # define W_OK 2 371 # define R_OK 4 372 #endif 373 #ifndef O_RDONLY 374 # define O_RDONLY 0 375 #endif 376 #ifndef O_WRONLY 377 # define O_WRONLY 1 378 #endif 379 #ifndef O_BINARY 380 # define O_BINARY 0 381 #endif 382 383 /* Some systems define these in, e.g., param.h. We undefine these names 384 here to avoid the warnings. We prefer to use our definitions since we 385 know they are correct. */ 386 387 #undef MIN 388 #undef MAX 389 #define MIN(X,Y) ((X) < (Y) ? (X) : (Y)) 390 #define MAX(X,Y) ((X) > (Y) ? (X) : (Y)) 391 392 /* Returns the least number N such that N * Y >= X. */ 393 #define CEIL(x,y) (((x) + (y) - 1) / (y)) 394 395 /* This macro rounds x up to the y boundary. */ 396 #define ROUND_UP(x,y) (((x) + (y) - 1) & ~((y) - 1)) 397 398 /* This macro rounds x down to the y boundary. */ 399 #define ROUND_DOWN(x,y) ((x) & ~((y) - 1)) 400 401 #ifdef HAVE_SYS_WAIT_H 402 #include <sys/wait.h> 403 #endif 404 405 #ifndef WIFSIGNALED 406 #define WIFSIGNALED(S) (((S) & 0xff) != 0 && ((S) & 0xff) != 0x7f) 407 #endif 408 #ifndef WTERMSIG 409 #define WTERMSIG(S) ((S) & 0x7f) 410 #endif 411 #ifndef WIFEXITED 412 #define WIFEXITED(S) (((S) & 0xff) == 0) 413 #endif 414 #ifndef WEXITSTATUS 415 #define WEXITSTATUS(S) (((S) & 0xff00) >> 8) 416 #endif 417 #ifndef WSTOPSIG 418 #define WSTOPSIG WEXITSTATUS 419 #endif 420 #ifndef WCOREDUMP 421 #define WCOREDUMP(S) ((S) & WCOREFLG) 422 #endif 423 #ifndef WCOREFLG 424 #define WCOREFLG 0200 425 #endif 426 427 #include <signal.h> 428 #if !defined (SIGCHLD) && defined (SIGCLD) 429 # define SIGCHLD SIGCLD 430 #endif 431 432 #ifdef HAVE_SYS_MMAN_H 433 # include <sys/mman.h> 434 #endif 435 436 #ifndef MAP_FAILED 437 # define MAP_FAILED ((void *)-1) 438 #endif 439 440 #if !defined (MAP_ANONYMOUS) && defined (MAP_ANON) 441 # define MAP_ANONYMOUS MAP_ANON 442 #endif 443 444 #ifdef HAVE_SYS_RESOURCE_H 445 # include <sys/resource.h> 446 #endif 447 448 #ifdef HAVE_SYS_TIMES_H 449 # include <sys/times.h> 450 #endif 451 452 /* The HAVE_DECL_* macros are three-state, undefined, 0 or 1. If they 453 are defined to 0 then we must provide the relevant declaration 454 here. These checks will be in the undefined state while configure 455 is running so be careful to test "defined (HAVE_DECL_*)". */ 456 457 #ifdef __cplusplus 458 extern "C" { 459 #endif 460 461 #if defined (HAVE_DECL_ATOF) && !HAVE_DECL_ATOF 462 extern double atof (const char *); 463 #endif 464 465 #if defined (HAVE_DECL_ATOL) && !HAVE_DECL_ATOL 466 extern long atol (const char *); 467 #endif 468 469 #if defined (HAVE_DECL_FREE) && !HAVE_DECL_FREE 470 extern void free (void *); 471 #endif 472 473 #if defined (HAVE_DECL_GETCWD) && !HAVE_DECL_GETCWD 474 extern char *getcwd (char *, size_t); 475 #endif 476 477 #if defined (HAVE_DECL_GETENV) && !HAVE_DECL_GETENV 478 extern char *getenv (const char *); 479 #endif 480 481 #if defined (HAVE_DECL_GETOPT) && !HAVE_DECL_GETOPT 482 extern int getopt (int, char * const *, const char *); 483 #endif 484 485 #if defined (HAVE_DECL_GETPAGESIZE) && !HAVE_DECL_GETPAGESIZE 486 extern int getpagesize (void); 487 #endif 488 489 #if defined (HAVE_DECL_GETWD) && !HAVE_DECL_GETWD 490 extern char *getwd (char *); 491 #endif 492 493 #if defined (HAVE_DECL_SBRK) && !HAVE_DECL_SBRK 494 extern void *sbrk (int); 495 #endif 496 497 #if defined (HAVE_DECL_SETENV) && !HAVE_DECL_SETENV 498 int setenv(const char *, const char *, int); 499 #endif 500 501 #if defined (HAVE_DECL_STRSTR) && !HAVE_DECL_STRSTR 502 extern char *strstr (const char *, const char *); 503 #endif 504 505 #if defined (HAVE_DECL_STPCPY) && !HAVE_DECL_STPCPY 506 extern char *stpcpy (char *, const char *); 507 #endif 508 509 #if defined (HAVE_DECL_UNSETENV) && !HAVE_DECL_UNSETENV 510 int unsetenv(const char *); 511 #endif 512 513 #if defined (HAVE_DECL_MALLOC) && !HAVE_DECL_MALLOC 514 extern void *malloc (size_t); 515 #endif 516 517 #if defined (HAVE_DECL_CALLOC) && !HAVE_DECL_CALLOC 518 extern void *calloc (size_t, size_t); 519 #endif 520 521 #if defined (HAVE_DECL_REALLOC) && !HAVE_DECL_REALLOC 522 extern void *realloc (void *, size_t); 523 #endif 524 525 #ifdef __cplusplus 526 } 527 #endif 528 529 #ifdef HAVE_STDINT_H 530 #include <stdint.h> 531 #endif 532 533 #ifdef HAVE_INTTYPES_H 534 #include <inttypes.h> 535 #endif 536 537 #ifndef SIZE_MAX 538 # define SIZE_MAX INTTYPE_MAXIMUM (size_t) 539 #endif 540 541 #ifdef __cplusplus 542 extern "C" { 543 #endif 544 545 /* If the system doesn't provide strsignal, we get it defined in 546 libiberty but no declaration is supplied. */ 547 #if !defined (HAVE_STRSIGNAL) \ 548 || (defined (HAVE_DECL_STRSIGNAL) && !HAVE_DECL_STRSIGNAL) 549 # ifndef strsignal 550 extern const char *strsignal (int); 551 # endif 552 #endif 553 554 #ifdef HAVE_GETRLIMIT 555 # if defined (HAVE_DECL_GETRLIMIT) && !HAVE_DECL_GETRLIMIT 556 # ifndef getrlimit 557 struct rlimit; 558 extern int getrlimit (int, struct rlimit *); 559 # endif 560 # endif 561 #endif 562 563 #ifdef HAVE_SETRLIMIT 564 # if defined (HAVE_DECL_SETRLIMIT) && !HAVE_DECL_SETRLIMIT 565 # ifndef setrlimit 566 struct rlimit; 567 extern int setrlimit (int, const struct rlimit *); 568 # endif 569 # endif 570 #endif 571 572 #if defined (HAVE_DECL_ABORT) && !HAVE_DECL_ABORT 573 extern void abort (void); 574 #endif 575 576 #if defined (HAVE_DECL_SNPRINTF) && !HAVE_DECL_SNPRINTF 577 extern int snprintf (char *, size_t, const char *, ...); 578 #endif 579 580 #if defined (HAVE_DECL_VSNPRINTF) && !HAVE_DECL_VSNPRINTF 581 extern int vsnprintf (char *, size_t, const char *, va_list); 582 #endif 583 584 #ifdef __cplusplus 585 } 586 #endif 587 588 /* 1 if we have C99 designated initializers. */ 589 #if !defined(HAVE_DESIGNATED_INITIALIZERS) 590 #ifdef __cplusplus 591 #define HAVE_DESIGNATED_INITIALIZERS 0 592 #else 593 #define HAVE_DESIGNATED_INITIALIZERS \ 594 ((GCC_VERSION >= 2007) || (__STDC_VERSION__ >= 199901L)) 595 #endif 596 #endif 597 598 #if !defined(HAVE_DESIGNATED_UNION_INITIALIZERS) 599 #ifdef __cplusplus 600 #define HAVE_DESIGNATED_UNION_INITIALIZERS (GCC_VERSION >= 4007) 601 #else 602 #define HAVE_DESIGNATED_UNION_INITIALIZERS \ 603 ((GCC_VERSION >= 2007) || (__STDC_VERSION__ >= 199901L)) 604 #endif 605 #endif 606 607 #if HAVE_SYS_STAT_H 608 # include <sys/stat.h> 609 #endif 610 611 /* Test if something is a normal file. */ 612 #ifndef S_ISREG 613 #define S_ISREG(m) (((m) & S_IFMT) == S_IFREG) 614 #endif 615 616 /* Test if something is a directory. */ 617 #ifndef S_ISDIR 618 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR) 619 #endif 620 621 /* Test if something is a character special file. */ 622 #ifndef S_ISCHR 623 #define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR) 624 #endif 625 626 /* Test if something is a block special file. */ 627 #ifndef S_ISBLK 628 #define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK) 629 #endif 630 631 /* Test if something is a socket. */ 632 #ifndef S_ISSOCK 633 # ifdef S_IFSOCK 634 # define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK) 635 # else 636 # define S_ISSOCK(m) 0 637 # endif 638 #endif 639 640 /* Test if something is a FIFO. */ 641 #ifndef S_ISFIFO 642 # ifdef S_IFIFO 643 # define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO) 644 # else 645 # define S_ISFIFO(m) 0 646 # endif 647 #endif 648 649 /* Define well known filenos if the system does not define them. */ 650 #ifndef STDIN_FILENO 651 # define STDIN_FILENO 0 652 #endif 653 #ifndef STDOUT_FILENO 654 # define STDOUT_FILENO 1 655 #endif 656 #ifndef STDERR_FILENO 657 # define STDERR_FILENO 2 658 #endif 659 660 /* Some systems have mkdir that takes a single argument. */ 661 #ifdef MKDIR_TAKES_ONE_ARG 662 # define mkdir(a,b) mkdir (a) 663 #endif 664 665 #ifndef HAVE_KILL 666 # define kill(p,s) raise (s) 667 #endif 668 669 /* Provide a way to print an address via printf. */ 670 #ifndef HOST_PTR_PRINTF 671 #define HOST_PTR_PRINTF "%p" 672 #endif /* ! HOST_PTR_PRINTF */ 673 674 /* By default, colon separates directories in a path. */ 675 #ifndef PATH_SEPARATOR 676 #define PATH_SEPARATOR ':' 677 #endif 678 679 /* Filename handling macros. */ 680 #include "filenames.h" 681 682 /* These should be phased out in favor of IS_DIR_SEPARATOR, where possible. */ 683 #ifndef DIR_SEPARATOR 684 # define DIR_SEPARATOR '/' 685 # ifdef HAVE_DOS_BASED_FILE_SYSTEM 686 # define DIR_SEPARATOR_2 '\\' 687 # endif 688 #endif 689 690 #if defined (ENABLE_PLUGIN) && defined (HAVE_DLFCN_H) 691 /* If plugin support is enabled, we could use libdl. */ 692 #include <dlfcn.h> 693 #endif 694 695 /* Do not introduce a gmp.h dependency on the build system. */ 696 #ifndef GENERATOR_FILE 697 #include <gmp.h> 698 #endif 699 700 /* Get libiberty declarations. */ 701 #include "libiberty.h" 702 703 #undef FFS /* Some systems predefine this symbol; don't let it interfere. */ 704 #undef FLOAT /* Likewise. */ 705 #undef ABS /* Likewise. */ 706 #undef PC /* Likewise. */ 707 708 /* Provide a default for the HOST_BIT_BUCKET. 709 This suffices for POSIX-like hosts. */ 710 711 #ifndef HOST_BIT_BUCKET 712 #define HOST_BIT_BUCKET "/dev/null" 713 #endif 714 715 #ifndef offsetof 716 #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *) 0)->MEMBER) 717 #endif 718 719 /* Various error reporting routines want to use __FUNCTION__. */ 720 #if (GCC_VERSION < 2007) 721 #ifndef __FUNCTION__ 722 #define __FUNCTION__ "?" 723 #endif /* ! __FUNCTION__ */ 724 #endif 725 726 /* __builtin_expect(A, B) evaluates to A, but notifies the compiler that 727 the most likely value of A is B. This feature was added at some point 728 between 2.95 and 3.0. Let's use 3.0 as the lower bound for now. */ 729 #if (GCC_VERSION < 3000) 730 #define __builtin_expect(a, b) (a) 731 #endif 732 733 /* Some of the headers included by <memory> can use "abort" within a 734 namespace, e.g. "_VSTD::abort();", which fails after we use the 735 preprocessor to redefine "abort" as "fancy_abort" below. 736 Given that unique-ptr.h can use "free", we need to do this after "free" 737 is declared but before "abort" is overridden. */ 738 739 #ifdef INCLUDE_UNIQUE_PTR 740 # include "unique-ptr.h" 741 #endif 742 743 #ifdef INCLUDE_MALLOC_H 744 #ifdef HAVE_MALLINFO 745 #include <malloc.h> 746 #endif 747 #endif 748 749 /* Redefine abort to report an internal error w/o coredump, and 750 reporting the location of the error in the source file. */ 751 extern void fancy_abort (const char *, int, const char *) 752 ATTRIBUTE_NORETURN ATTRIBUTE_COLD; 753 #define abort() fancy_abort (__FILE__, __LINE__, __FUNCTION__) 754 755 /* Use gcc_assert(EXPR) to test invariants. */ 756 #if ENABLE_ASSERT_CHECKING 757 #define gcc_assert(EXPR) \ 758 ((void)(!(EXPR) ? fancy_abort (__FILE__, __LINE__, __FUNCTION__), 0 : 0)) 759 #elif (GCC_VERSION >= 4005) 760 #define gcc_assert(EXPR) \ 761 ((void)(__builtin_expect (!(EXPR), 0) ? __builtin_unreachable (), 0 : 0)) 762 #else 763 /* Include EXPR, so that unused variable warnings do not occur. */ 764 #define gcc_assert(EXPR) ((void)(0 && (EXPR))) 765 #endif 766 767 #if CHECKING_P 768 #define gcc_checking_assert(EXPR) gcc_assert (EXPR) 769 #else 770 /* N.B.: in release build EXPR is not evaluated. */ 771 #define gcc_checking_assert(EXPR) ((void)(0 && (EXPR))) 772 #endif 773 774 #if GCC_VERSION >= 4000 775 #define ALWAYS_INLINE inline __attribute__ ((always_inline)) 776 #else 777 #define ALWAYS_INLINE inline 778 #endif 779 780 /* Use gcc_unreachable() to mark unreachable locations (like an 781 unreachable default case of a switch. Do not use gcc_assert(0). */ 782 #if (GCC_VERSION >= 4005) && !ENABLE_ASSERT_CHECKING 783 #define gcc_unreachable() __builtin_unreachable () 784 #else 785 #define gcc_unreachable() (fancy_abort (__FILE__, __LINE__, __FUNCTION__)) 786 #endif 787 788 #if GCC_VERSION >= 7000 && defined(__has_attribute) 789 # if __has_attribute(fallthrough) 790 # define gcc_fallthrough() __attribute__((fallthrough)) 791 # else 792 # define gcc_fallthrough() 793 # endif 794 #else 795 # define gcc_fallthrough() 796 #endif 797 798 #if GCC_VERSION >= 3001 799 #define STATIC_CONSTANT_P(X) (__builtin_constant_p (X) && (X)) 800 #else 801 #define STATIC_CONSTANT_P(X) (false && (X)) 802 #endif 803 804 /* static_assert (COND, MESSAGE) is available in C++11 onwards. */ 805 #if __cplusplus >= 201103L 806 #define STATIC_ASSERT(X) \ 807 static_assert ((X), #X) 808 #else 809 #define STATIC_ASSERT(X) \ 810 typedef int assertion1[(X) ? 1 : -1] ATTRIBUTE_UNUSED 811 #endif 812 813 /* Provide a fake boolean type. We make no attempt to use the 814 C99 _Bool, as it may not be available in the bootstrap compiler, 815 and even if it is, it is liable to be buggy. 816 This must be after all inclusion of system headers, as some of 817 them will mess us up. */ 818 819 #undef TRUE 820 #undef FALSE 821 822 #ifdef __cplusplus 823 /* Obsolete. */ 824 # define TRUE true 825 # define FALSE false 826 #else /* !__cplusplus */ 827 # undef bool 828 # undef true 829 # undef false 830 831 # define bool unsigned char 832 # define true 1 833 # define false 0 834 835 /* Obsolete. */ 836 # define TRUE true 837 # define FALSE false 838 #endif /* !__cplusplus */ 839 840 /* Some compilers do not allow the use of unsigned char in bitfields. */ 841 #define BOOL_BITFIELD unsigned int 842 843 /* GCC older than 4.4 have broken C++ value initialization handling, see 844 PR11309, PR30111, PR33916, PR82939 and PR84405 for more details. */ 845 #if GCC_VERSION > 0 && GCC_VERSION < 4004 && !defined(__clang__) 846 # define BROKEN_VALUE_INITIALIZATION 847 #endif 848 849 /* As the last action in this file, we poison the identifiers that 850 shouldn't be used. Note, luckily gcc-3.0's token-based integrated 851 preprocessor won't trip on poisoned identifiers that arrive from 852 the expansion of macros. E.g. #define strrchr rindex, won't error 853 if rindex is poisoned after this directive is issued and later on 854 strrchr is called. 855 856 Note: We define bypass macros for the few cases where we really 857 want to use the libc memory allocation routines. Otherwise we 858 insist you use the "x" versions from libiberty. */ 859 860 #define really_call_malloc malloc 861 #define really_call_calloc calloc 862 #define really_call_realloc realloc 863 864 #if defined(FLEX_SCANNER) || defined(YYBISON) || defined(YYBYACC) 865 /* Flex and bison use malloc and realloc. Yuk. Note that this means 866 really_call_* cannot be used in a .l or .y file. */ 867 #define malloc xmalloc 868 #define realloc xrealloc 869 #endif 870 871 #if (GCC_VERSION >= 3000) 872 873 /* Note autoconf checks for prototype declarations and includes 874 system.h while doing so. Only poison these tokens if actually 875 compiling gcc, so that the autoconf declaration tests for malloc 876 etc don't spuriously fail. */ 877 #ifdef IN_GCC 878 879 #ifndef USES_ISL 880 #undef calloc 881 #undef strdup 882 #undef strndup 883 #pragma GCC poison calloc strdup strndup 884 #endif 885 886 #if !defined(FLEX_SCANNER) && !defined(YYBISON) 887 #undef malloc 888 #undef realloc 889 #pragma GCC poison malloc realloc 890 #endif 891 892 /* The %m format should be used when GCC's main diagnostic functions 893 supporting %m are available, and xstrerror from libiberty 894 otherwise. */ 895 #undef strerror 896 #pragma GCC poison strerror 897 898 /* loc_t is defined on some systems and too inviting for some 899 programmers to avoid. */ 900 #undef loc_t 901 #pragma GCC poison loc_t 902 903 /* Old target macros that have moved to the target hooks structure. */ 904 #pragma GCC poison ASM_OPEN_PAREN ASM_CLOSE_PAREN \ 905 FUNCTION_PROLOGUE FUNCTION_EPILOGUE \ 906 FUNCTION_END_PROLOGUE FUNCTION_BEGIN_EPILOGUE \ 907 DECL_MACHINE_ATTRIBUTES COMP_TYPE_ATTRIBUTES INSERT_ATTRIBUTES \ 908 VALID_MACHINE_DECL_ATTRIBUTE VALID_MACHINE_TYPE_ATTRIBUTE \ 909 SET_DEFAULT_TYPE_ATTRIBUTES SET_DEFAULT_DECL_ATTRIBUTES \ 910 MERGE_MACHINE_TYPE_ATTRIBUTES MERGE_MACHINE_DECL_ATTRIBUTES \ 911 MD_INIT_BUILTINS MD_EXPAND_BUILTIN ASM_OUTPUT_CONSTRUCTOR \ 912 ASM_OUTPUT_DESTRUCTOR SIGNED_CHAR_SPEC MAX_CHAR_TYPE_SIZE \ 913 WCHAR_UNSIGNED UNIQUE_SECTION SELECT_SECTION SELECT_RTX_SECTION \ 914 ENCODE_SECTION_INFO STRIP_NAME_ENCODING ASM_GLOBALIZE_LABEL \ 915 ASM_OUTPUT_MI_THUNK CONST_COSTS RTX_COSTS DEFAULT_RTX_COSTS \ 916 ADDRESS_COST MACHINE_DEPENDENT_REORG ASM_FILE_START ASM_FILE_END \ 917 ASM_SIMPLIFY_DWARF_ADDR INIT_TARGET_OPTABS INIT_SUBTARGET_OPTABS \ 918 INIT_GOFAST_OPTABS MULSI3_LIBCALL MULDI3_LIBCALL DIVSI3_LIBCALL \ 919 DIVDI3_LIBCALL UDIVSI3_LIBCALL UDIVDI3_LIBCALL MODSI3_LIBCALL \ 920 MODDI3_LIBCALL UMODSI3_LIBCALL UMODDI3_LIBCALL BUILD_VA_LIST_TYPE \ 921 PRETEND_OUTGOING_VARARGS_NAMED STRUCT_VALUE_INCOMING_REGNUM \ 922 ASM_OUTPUT_SECTION_NAME PROMOTE_FUNCTION_ARGS PROMOTE_FUNCTION_MODE \ 923 STRUCT_VALUE_INCOMING STRICT_ARGUMENT_NAMING \ 924 PROMOTE_FUNCTION_RETURN PROMOTE_PROTOTYPES STRUCT_VALUE_REGNUM \ 925 SETUP_INCOMING_VARARGS EXPAND_BUILTIN_SAVEREGS \ 926 DEFAULT_SHORT_ENUMS SPLIT_COMPLEX_ARGS MD_ASM_CLOBBERS \ 927 HANDLE_PRAGMA_REDEFINE_EXTNAME HANDLE_PRAGMA_EXTERN_PREFIX \ 928 MUST_PASS_IN_STACK FUNCTION_ARG_PASS_BY_REFERENCE \ 929 VECTOR_MODE_SUPPORTED_P TARGET_SUPPORTS_HIDDEN \ 930 FUNCTION_ARG_PARTIAL_NREGS ASM_OUTPUT_DWARF_DTPREL \ 931 ALLOCATE_INITIAL_VALUE LEGITIMIZE_ADDRESS FRAME_POINTER_REQUIRED \ 932 CAN_ELIMINATE TRAMPOLINE_TEMPLATE INITIALIZE_TRAMPOLINE \ 933 TRAMPOLINE_ADJUST_ADDRESS STATIC_CHAIN STATIC_CHAIN_INCOMING \ 934 RETURN_POPS_ARGS UNITS_PER_SIMD_WORD OVERRIDE_OPTIONS \ 935 OPTIMIZATION_OPTIONS CLASS_LIKELY_SPILLED_P \ 936 USING_SJLJ_EXCEPTIONS TARGET_UNWIND_INFO \ 937 CAN_DEBUG_WITHOUT_FP UNLIKELY_EXECUTED_TEXT_SECTION_NAME \ 938 HOT_TEXT_SECTION_NAME LEGITIMATE_CONSTANT_P ALWAYS_STRIP_DOTDOT \ 939 OUTPUT_ADDR_CONST_EXTRA SMALL_REGISTER_CLASSES ASM_OUTPUT_IDENT \ 940 ASM_BYTE_OP MEMBER_TYPE_FORCES_BLK LIBGCC2_HAS_SF_MODE \ 941 LIBGCC2_HAS_DF_MODE LIBGCC2_HAS_XF_MODE LIBGCC2_HAS_TF_MODE \ 942 CLEAR_BY_PIECES_P MOVE_BY_PIECES_P SET_BY_PIECES_P \ 943 STORE_BY_PIECES_P TARGET_FLT_EVAL_METHOD \ 944 HARD_REGNO_CALL_PART_CLOBBERED HARD_REGNO_MODE_OK \ 945 MODES_TIEABLE_P FUNCTION_ARG_PADDING SLOW_UNALIGNED_ACCESS \ 946 HARD_REGNO_NREGS SECONDARY_MEMORY_NEEDED_MODE \ 947 SECONDARY_MEMORY_NEEDED CANNOT_CHANGE_MODE_CLASS \ 948 TRULY_NOOP_TRUNCATION FUNCTION_ARG_OFFSET CONSTANT_ALIGNMENT \ 949 STARTING_FRAME_OFFSET 950 951 /* Target macros only used for code built for the target, that have 952 moved to libgcc-tm.h or have never been present elsewhere. */ 953 #pragma GCC poison DECLARE_LIBRARY_RENAMES LIBGCC2_GNU_PREFIX \ 954 MD_UNWIND_SUPPORT MD_FROB_UPDATE_CONTEXT ENABLE_EXECUTE_STACK \ 955 REG_VALUE_IN_UNWIND_CONTEXT ASSUME_EXTENDED_UNWIND_CONTEXT 956 957 /* Other obsolete target macros, or macros that used to be in target 958 headers and were not used, and may be obsolete or may never have 959 been used. */ 960 #pragma GCC poison INT_ASM_OP ASM_OUTPUT_EH_REGION_BEG CPP_PREDEFINES \ 961 ASM_OUTPUT_EH_REGION_END ASM_OUTPUT_LABELREF_AS_INT SMALL_STACK \ 962 DOESNT_NEED_UNWINDER EH_TABLE_LOOKUP OBJC_SELECTORS_WITHOUT_LABELS \ 963 OMIT_EH_TABLE EASY_DIV_EXPR IMPLICIT_FIX_EXPR \ 964 LONGJMP_RESTORE_FROM_STACK MAX_INT_TYPE_SIZE ASM_IDENTIFY_GCC \ 965 STDC_VALUE TRAMPOLINE_ALIGN ASM_IDENTIFY_GCC_AFTER_SOURCE \ 966 SLOW_ZERO_EXTEND SUBREG_REGNO_OFFSET DWARF_LINE_MIN_INSTR_LENGTH \ 967 TRADITIONAL_RETURN_FLOAT NO_BUILTIN_SIZE_TYPE \ 968 NO_BUILTIN_PTRDIFF_TYPE NO_BUILTIN_WCHAR_TYPE NO_BUILTIN_WINT_TYPE \ 969 BLOCK_PROFILER BLOCK_PROFILER_CODE FUNCTION_BLOCK_PROFILER \ 970 FUNCTION_BLOCK_PROFILER_EXIT MACHINE_STATE_SAVE \ 971 MACHINE_STATE_RESTORE SCCS_DIRECTIVE SECTION_ASM_OP BYTEORDER \ 972 ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL HOST_WORDS_BIG_ENDIAN \ 973 OBJC_PROLOGUE ALLOCATE_TRAMPOLINE HANDLE_PRAGMA ROUND_TYPE_SIZE \ 974 ROUND_TYPE_SIZE_UNIT CONST_SECTION_ASM_OP CRT_GET_RFIB_TEXT \ 975 DBX_LBRAC_FIRST DBX_OUTPUT_ENUM DBX_OUTPUT_SOURCE_FILENAME \ 976 DBX_WORKING_DIRECTORY INSN_CACHE_DEPTH INSN_CACHE_SIZE \ 977 INSN_CACHE_LINE_WIDTH INIT_SECTION_PREAMBLE NEED_ATEXIT ON_EXIT \ 978 EXIT_BODY OBJECT_FORMAT_ROSE MULTIBYTE_CHARS MAP_CHARACTER \ 979 LIBGCC_NEEDS_DOUBLE FINAL_PRESCAN_LABEL DEFAULT_CALLER_SAVES \ 980 LOAD_ARGS_REVERSED MAX_INTEGER_COMPUTATION_MODE \ 981 CONVERT_HARD_REGISTER_TO_SSA_P ASM_OUTPUT_MAIN_SOURCE_FILENAME \ 982 FIRST_INSN_ADDRESS TEXT_SECTION SHARED_BSS_SECTION_ASM_OP \ 983 PROMOTED_MODE EXPAND_BUILTIN_VA_END \ 984 LINKER_DOES_NOT_WORK_WITH_DWARF2 FUNCTION_ARG_KEEP_AS_REFERENCE \ 985 GIV_SORT_CRITERION MAX_LONG_TYPE_SIZE MAX_LONG_DOUBLE_TYPE_SIZE \ 986 MAX_WCHAR_TYPE_SIZE SHARED_SECTION_ASM_OP INTEGRATE_THRESHOLD \ 987 FINAL_REG_PARM_STACK_SPACE MAYBE_REG_PARM_STACK_SPACE \ 988 TRADITIONAL_PIPELINE_INTERFACE DFA_PIPELINE_INTERFACE \ 989 DBX_OUTPUT_STANDARD_TYPES BUILTIN_SETJMP_FRAME_VALUE \ 990 SUNOS4_SHARED_LIBRARIES PROMOTE_FOR_CALL_ONLY \ 991 SPACE_AFTER_L_OPTION NO_RECURSIVE_FUNCTION_CSE \ 992 DEFAULT_MAIN_RETURN TARGET_MEM_FUNCTIONS EXPAND_BUILTIN_VA_ARG \ 993 COLLECT_PARSE_FLAG DWARF2_GENERATE_TEXT_SECTION_LABEL WINNING_GDB \ 994 ASM_OUTPUT_FILENAME ASM_OUTPUT_SOURCE_LINE FILE_NAME_JOINER \ 995 GDB_INV_REF_REGPARM_STABS_LETTER DBX_MEMPARM_STABS_LETTER \ 996 PUT_SDB_SRC_FILE STABS_GCC_MARKER DBX_OUTPUT_FUNCTION_END \ 997 DBX_OUTPUT_GCC_MARKER DBX_FINISH_SYMBOL SDB_GENERATE_FAKE \ 998 NON_SAVING_SETJMP TARGET_LATE_RTL_PROLOGUE_EPILOGUE \ 999 CASE_DROPS_THROUGH TARGET_BELL TARGET_BS TARGET_CR TARGET_DIGIT0 \ 1000 TARGET_ESC TARGET_FF TARGET_NEWLINE TARGET_TAB TARGET_VT \ 1001 LINK_LIBGCC_SPECIAL DONT_ACCESS_GBLS_AFTER_EPILOGUE \ 1002 TARGET_OPTIONS TARGET_SWITCHES EXTRA_CC_MODES FINALIZE_PIC \ 1003 PREDICATE_CODES SPECIAL_MODE_PREDICATES UNALIGNED_WORD_ASM_OP \ 1004 EXTRA_SECTIONS EXTRA_SECTION_FUNCTIONS READONLY_DATA_SECTION \ 1005 TARGET_ASM_EXCEPTION_SECTION TARGET_ASM_EH_FRAME_SECTION \ 1006 SMALL_ARG_MAX ASM_OUTPUT_SHARED_BSS ASM_OUTPUT_SHARED_COMMON \ 1007 ASM_OUTPUT_SHARED_LOCAL ASM_MAKE_LABEL_LINKONCE \ 1008 STACK_CHECK_PROBE_INTERVAL STACK_CHECK_PROBE_LOAD \ 1009 ORDER_REGS_FOR_LOCAL_ALLOC FUNCTION_OUTGOING_VALUE \ 1010 ASM_DECLARE_CONSTANT_NAME MODIFY_TARGET_NAME SWITCHES_NEED_SPACES \ 1011 SWITCH_CURTAILS_COMPILATION SWITCH_TAKES_ARG WORD_SWITCH_TAKES_ARG \ 1012 TARGET_OPTION_TRANSLATE_TABLE HANDLE_PRAGMA_PACK_PUSH_POP \ 1013 HANDLE_SYSV_PRAGMA HANDLE_PRAGMA_WEAK CONDITIONAL_REGISTER_USAGE \ 1014 FUNCTION_ARG_BOUNDARY MUST_USE_SJLJ_EXCEPTIONS US_SOFTWARE_GOFAST \ 1015 USING_SVR4_H SVR4_ASM_SPEC FUNCTION_ARG FUNCTION_ARG_ADVANCE \ 1016 FUNCTION_INCOMING_ARG IRA_COVER_CLASSES TARGET_VERSION \ 1017 MACHINE_TYPE TARGET_HAS_TARGETCM ASM_OUTPUT_BSS \ 1018 SETJMP_VIA_SAVE_AREA FORBIDDEN_INC_DEC_CLASSES \ 1019 PREFERRED_OUTPUT_RELOAD_CLASS SYSTEM_INCLUDE_DIR \ 1020 STANDARD_INCLUDE_DIR STANDARD_INCLUDE_COMPONENT \ 1021 LINK_ELIMINATE_DUPLICATE_LDIRECTORIES MIPS_DEBUGGING_INFO \ 1022 IDENT_ASM_OP ALL_COP_ADDITIONAL_REGISTER_NAMES DBX_OUTPUT_LBRAC \ 1023 DBX_OUTPUT_NFUN DBX_OUTPUT_RBRAC RANGE_TEST_NON_SHORT_CIRCUIT \ 1024 REAL_VALUE_TRUNCATE REVERSE_CONDEXEC_PREDICATES_P \ 1025 TARGET_ALIGN_ANON_BITFIELDS TARGET_NARROW_VOLATILE_BITFIELDS \ 1026 IDENT_ASM_OP UNALIGNED_SHORT_ASM_OP UNALIGNED_INT_ASM_OP \ 1027 UNALIGNED_LONG_ASM_OP UNALIGNED_DOUBLE_INT_ASM_OP \ 1028 USE_COMMON_FOR_ONE_ONLY IFCVT_EXTRA_FIELDS IFCVT_INIT_EXTRA_FIELDS \ 1029 CASE_USE_BIT_TESTS FIXUNS_TRUNC_LIKE_FIX_TRUNC \ 1030 GO_IF_MODE_DEPENDENT_ADDRESS DELAY_SLOTS_FOR_EPILOGUE \ 1031 ELIGIBLE_FOR_EPILOGUE_DELAY TARGET_C99_FUNCTIONS TARGET_HAS_SINCOS \ 1032 REG_CLASS_FROM_LETTER CONST_OK_FOR_LETTER_P \ 1033 CONST_DOUBLE_OK_FOR_LETTER_P EXTRA_CONSTRAINT \ 1034 REG_CLASS_FROM_CONSTRAINT REG_CLASS_FOR_CONSTRAINT \ 1035 EXTRA_CONSTRAINT_STR EXTRA_MEMORY_CONSTRAINT \ 1036 EXTRA_ADDRESS_CONSTRAINT CONST_DOUBLE_OK_FOR_CONSTRAINT_P \ 1037 CALLER_SAVE_PROFITABLE LARGEST_EXPONENT_IS_NORMAL \ 1038 ROUND_TOWARDS_ZERO SF_SIZE DF_SIZE XF_SIZE TF_SIZE LIBGCC2_TF_CEXT \ 1039 LIBGCC2_LONG_DOUBLE_TYPE_SIZE STRUCT_VALUE \ 1040 EH_FRAME_IN_DATA_SECTION TARGET_FLT_EVAL_METHOD_NON_DEFAULT \ 1041 JCR_SECTION_NAME TARGET_USE_JCR_SECTION SDB_DEBUGGING_INFO \ 1042 SDB_DEBUG NO_IMPLICIT_EXTERN_C 1043 1044 /* Hooks that are no longer used. */ 1045 #pragma GCC poison LANG_HOOKS_FUNCTION_MARK LANG_HOOKS_FUNCTION_FREE \ 1046 LANG_HOOKS_MARK_TREE LANG_HOOKS_INSERT_DEFAULT_ATTRIBUTES \ 1047 LANG_HOOKS_TREE_INLINING_ESTIMATE_NUM_INSNS \ 1048 LANG_HOOKS_PUSHLEVEL LANG_HOOKS_SET_BLOCK \ 1049 LANG_HOOKS_MAYBE_BUILD_CLEANUP LANG_HOOKS_UPDATE_DECL_AFTER_SAVING \ 1050 LANG_HOOKS_POPLEVEL LANG_HOOKS_TRUTHVALUE_CONVERSION \ 1051 TARGET_PROMOTE_FUNCTION_ARGS TARGET_PROMOTE_FUNCTION_RETURN \ 1052 LANG_HOOKS_MISSING_ARGUMENT LANG_HOOKS_HASH_TYPES \ 1053 TARGET_HANDLE_OFAST TARGET_OPTION_OPTIMIZATION \ 1054 TARGET_IRA_COVER_CLASSES TARGET_HELP \ 1055 TARGET_HANDLE_PRAGMA_EXTERN_PREFIX \ 1056 TARGET_VECTORIZE_BUILTIN_MUL_WIDEN_EVEN \ 1057 TARGET_VECTORIZE_BUILTIN_MUL_WIDEN_ODD \ 1058 TARGET_MD_ASM_CLOBBERS TARGET_RELAXED_ORDERING \ 1059 EXTENDED_SDB_BASIC_TYPES TARGET_INVALID_PARAMETER_TYPE \ 1060 TARGET_INVALID_RETURN_TYPE 1061 1062 /* Arrays that were deleted in favor of a functional interface. */ 1063 #pragma GCC poison built_in_decls implicit_built_in_decls 1064 1065 /* Hooks into libgcc2. */ 1066 #pragma GCC poison LIBGCC2_DOUBLE_TYPE_SIZE LIBGCC2_WORDS_BIG_ENDIAN \ 1067 LIBGCC2_FLOAT_WORDS_BIG_ENDIAN 1068 1069 /* Miscellaneous macros that are no longer used. */ 1070 #pragma GCC poison USE_MAPPED_LOCATION GET_ENVIRONMENT 1071 1072 /* Libiberty macros that are no longer used in GCC. */ 1073 #undef ANSI_PROTOTYPES 1074 #undef PTR_CONST 1075 #undef LONG_DOUBLE 1076 #undef VPARAMS 1077 #undef VA_OPEN 1078 #undef VA_FIXEDARG 1079 #undef VA_CLOSE 1080 #undef VA_START 1081 #pragma GCC poison ANSI_PROTOTYPES PTR_CONST LONG_DOUBLE VPARAMS VA_OPEN \ 1082 VA_FIXEDARG VA_CLOSE VA_START 1083 #endif /* IN_GCC */ 1084 1085 /* Front ends should never have to include middle-end headers. Enforce 1086 this by poisoning the header double-include protection defines. */ 1087 #ifdef IN_GCC_FRONTEND 1088 #pragma GCC poison GCC_RTL_H GCC_EXCEPT_H GCC_EXPR_H 1089 #endif 1090 1091 /* Note: not all uses of the `index' token (e.g. variable names and 1092 structure members) have been eliminated. */ 1093 #undef bcopy 1094 #undef bzero 1095 #undef bcmp 1096 #undef rindex 1097 #pragma GCC poison bcopy bzero bcmp rindex 1098 1099 /* Poison ENABLE_CHECKING macro that should be replaced with 1100 'if (flag_checking)', or with CHECKING_P macro. */ 1101 #pragma GCC poison ENABLE_CHECKING 1102 1103 #endif /* GCC >= 3.0 */ 1104 1105 /* This macro allows casting away const-ness to pass -Wcast-qual 1106 warnings. DO NOT USE THIS UNLESS YOU REALLY HAVE TO! It should 1107 only be used in certain specific cases. One valid case is where 1108 the C standard definitions or prototypes force you to. E.g. if you 1109 need to free a const object, or if you pass a const string to 1110 execv, et al. Another valid use would be in an allocation function 1111 that creates const objects that need to be initialized. In some 1112 cases we have non-const functions that return the argument 1113 (e.g. next_nonnote_insn). Rather than create const shadow 1114 functions, we can cast away const-ness in calling these interfaces 1115 if we're careful to verify that the called function does indeed not 1116 modify its argument and the return value is only used in a const 1117 context. (This can be somewhat dangerous as these assumptions can 1118 change after the fact). Beyond these uses, most other cases of 1119 using this macro should be viewed with extreme caution. */ 1120 1121 #ifdef __cplusplus 1122 #define CONST_CAST2(TOTYPE,FROMTYPE,X) (const_cast<TOTYPE> (X)) 1123 #else 1124 #if defined(__GNUC__) && GCC_VERSION > 4000 1125 /* GCC 4.0.x has a bug where it may ICE on this expression, 1126 so does GCC 3.4.x (PR17436). */ 1127 #define CONST_CAST2(TOTYPE,FROMTYPE,X) ((__extension__(union {FROMTYPE _q; TOTYPE _nq;})(X))._nq) 1128 #elif defined(__GNUC__) 1129 static inline char * 1130 helper_const_non_const_cast (const char *p) 1131 { 1132 union { 1133 const char *const_c; 1134 char *c; 1135 } val; 1136 val.const_c = p; 1137 return val.c; 1138 } 1139 1140 #define CONST_CAST2(TOTYPE,FROMTYPE,X) \ 1141 ((TOTYPE) helper_const_non_const_cast ((const char *) (FROMTYPE) (X))) 1142 #else 1143 #define CONST_CAST2(TOTYPE,FROMTYPE,X) ((TOTYPE)(FROMTYPE)(X)) 1144 #endif 1145 #endif 1146 #define CONST_CAST(TYPE,X) CONST_CAST2 (TYPE, const TYPE, (X)) 1147 #define CONST_CAST_TREE(X) CONST_CAST (union tree_node *, (X)) 1148 #define CONST_CAST_RTX(X) CONST_CAST (struct rtx_def *, (X)) 1149 #define CONST_CAST_RTX_INSN(X) CONST_CAST (struct rtx_insn *, (X)) 1150 #define CONST_CAST_BB(X) CONST_CAST (struct basic_block_def *, (X)) 1151 #define CONST_CAST_GIMPLE(X) CONST_CAST (gimple *, (X)) 1152 1153 /* Activate certain diagnostics as warnings (not errors via the 1154 -Werror flag). */ 1155 #if GCC_VERSION >= 4003 1156 /* If asserts are disabled, activate -Wuninitialized as a warning (not 1157 an error/-Werror). */ 1158 #ifndef ENABLE_ASSERT_CHECKING 1159 #pragma GCC diagnostic warning "-Wuninitialized" 1160 #endif 1161 #endif 1162 1163 #ifdef ENABLE_VALGRIND_ANNOTATIONS 1164 # ifdef HAVE_VALGRIND_MEMCHECK_H 1165 # include <valgrind/memcheck.h> 1166 # elif defined HAVE_MEMCHECK_H 1167 # include <memcheck.h> 1168 # else 1169 # include <valgrind.h> 1170 # endif 1171 /* Compatibility macros to let valgrind 3.1 work. */ 1172 # ifndef VALGRIND_MAKE_MEM_NOACCESS 1173 # define VALGRIND_MAKE_MEM_NOACCESS VALGRIND_MAKE_NOACCESS 1174 # endif 1175 # ifndef VALGRIND_MAKE_MEM_DEFINED 1176 # define VALGRIND_MAKE_MEM_DEFINED VALGRIND_MAKE_READABLE 1177 # endif 1178 # ifndef VALGRIND_MAKE_MEM_UNDEFINED 1179 # define VALGRIND_MAKE_MEM_UNDEFINED VALGRIND_MAKE_WRITABLE 1180 # endif 1181 #else 1182 /* Avoid #ifdef:s when we can help it. */ 1183 #define VALGRIND_DISCARD(x) 1184 #define VALGRIND_MALLOCLIKE_BLOCK(w,x,y,z) 1185 #define VALGRIND_FREELIKE_BLOCK(x,y) 1186 #endif 1187 1188 /* Macros to temporarily ignore some warnings. */ 1189 #if GCC_VERSION >= 6000 1190 #define GCC_DIAGNOSTIC_STRINGIFY(x) #x 1191 #define GCC_DIAGNOSTIC_PUSH_IGNORED(x) \ 1192 _Pragma ("GCC diagnostic push") \ 1193 _Pragma (GCC_DIAGNOSTIC_STRINGIFY (GCC diagnostic ignored #x)) 1194 #define GCC_DIAGNOSTIC_POP _Pragma ("GCC diagnostic pop") 1195 #else 1196 #define GCC_DIAGNOSTIC_PUSH_IGNORED(x) 1197 #define GCC_DIAGNOSTIC_POP 1198 #endif 1199 1200 /* In LTO -fwhole-program build we still want to keep the debug functions available 1201 for debugger. Mark them as used to prevent removal. */ 1202 #if (GCC_VERSION > 4000) 1203 #define DEBUG_FUNCTION __attribute__ ((__used__)) 1204 #define DEBUG_VARIABLE __attribute__ ((__used__)) 1205 #else 1206 #define DEBUG_FUNCTION 1207 #define DEBUG_VARIABLE 1208 #endif 1209 1210 /* General macro to extract bit Y of X. */ 1211 #define TEST_BIT(X, Y) (((X) >> (Y)) & 1) 1212 1213 /* Get definitions of HOST_WIDE_INT. */ 1214 #include "hwint.h" 1215 1216 typedef int sort_r_cmp_fn (const void *, const void *, void *); 1217 void qsort_chk (void *, size_t, size_t, sort_r_cmp_fn *, void *); 1218 void gcc_sort_r (void *, size_t, size_t, sort_r_cmp_fn *, void *); 1219 void gcc_qsort (void *, size_t, size_t, int (*)(const void *, const void *)); 1220 void gcc_stablesort (void *, size_t, size_t, 1221 int (*)(const void *, const void *)); 1222 /* Redirect four-argument qsort calls to gcc_qsort; one-argument invocations 1223 correspond to vec::qsort, and use C qsort internally. */ 1224 #define PP_5th(a1, a2, a3, a4, a5, ...) a5 1225 #undef qsort 1226 #define qsort(...) PP_5th (__VA_ARGS__, gcc_qsort, 3, 2, qsort, 0) (__VA_ARGS__) 1227 1228 #define ONE_K 1024 1229 #define ONE_M (ONE_K * ONE_K) 1230 1231 /* Display a number as an integer multiple of either: 1232 - 1024, if said integer is >= to 10 K (in base 2) 1233 - 1024 * 1024, if said integer is >= 10 M in (base 2) 1234 */ 1235 #define SIZE_SCALE(x) (((x) < 10 * ONE_K \ 1236 ? (x) \ 1237 : ((x) < 10 * ONE_M \ 1238 ? (x) / ONE_K \ 1239 : (x) / ONE_M))) 1240 1241 /* For a given integer, display either: 1242 - the character 'k', if the number is higher than 10 K (in base 2) 1243 but strictly lower than 10 M (in base 2) 1244 - the character 'M' if the number is higher than 10 M (in base2) 1245 - the charcter ' ' if the number is strictly lower than 10 K */ 1246 #define SIZE_LABEL(x) ((x) < 10 * ONE_K ? ' ' : ((x) < 10 * ONE_M ? 'k' : 'M')) 1247 1248 /* Display an integer amount as multiple of 1K or 1M (in base 2). 1249 Display the correct unit (either k, M, or ' ') after the amount, as 1250 well. */ 1251 #define SIZE_AMOUNT(size) (uint64_t)SIZE_SCALE (size), SIZE_LABEL (size) 1252 1253 /* Format string particle for printing a SIZE_AMOUNT with N being the width 1254 of the number. */ 1255 #define PRsa(n) "%" #n PRIu64 "%c" 1256 1257 #endif /* ! GCC_SYSTEM_H */ 1258