1 /* Get common system includes and various definitions and declarations based 2 on autoconf macros. 3 Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, 4 2009 5 Free Software Foundation, Inc. 6 7 This file is part of GCC. 8 9 GCC is free software; you can redistribute it and/or modify it under 10 the terms of the GNU General Public License as published by the Free 11 Software Foundation; either version 3, or (at your option) any later 12 version. 13 14 GCC is distributed in the hope that it will be useful, but WITHOUT ANY 15 WARRANTY; without even the implied warranty of MERCHANTABILITY or 16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 17 for more details. 18 19 You should have received a copy of the GNU General Public License 20 along with GCC; see the file COPYING3. If not see 21 <http://www.gnu.org/licenses/>. */ 22 23 24 #ifndef GCC_SYSTEM_H 25 #define GCC_SYSTEM_H 26 27 /* We must include stdarg.h before stdio.h. */ 28 #include <stdarg.h> 29 30 #ifndef va_copy 31 # ifdef __va_copy 32 # define va_copy(d,s) __va_copy((d),(s)) 33 # else 34 # define va_copy(d,s) ((d) = (s)) 35 # endif 36 #endif 37 38 #ifdef HAVE_STDDEF_H 39 # include <stddef.h> 40 #endif 41 42 #include <stdio.h> 43 44 /* Define a generic NULL if one hasn't already been defined. */ 45 #ifndef NULL 46 #define NULL 0 47 #endif 48 49 /* Use the unlocked open routines from libiberty. */ 50 #ifdef fopen /* fopen is a #define on VMS. */ 51 #undef fopen 52 #endif 53 #define fopen(PATH,MODE) fopen_unlocked(PATH,MODE) 54 #define fdopen(FILDES,MODE) fdopen_unlocked(FILDES,MODE) 55 #define freopen(PATH,MODE,STREAM) freopen_unlocked(PATH,MODE,STREAM) 56 57 /* The compiler is not a multi-threaded application and therefore we 58 do not have to use the locking functions. In fact, using the locking 59 functions can cause the compiler to be significantly slower under 60 I/O bound conditions (such as -g -O0 on very large source files). 61 62 HAVE_DECL_PUTC_UNLOCKED actually indicates whether or not the stdio 63 code is multi-thread safe by default. If it is set to 0, then do 64 not worry about using the _unlocked functions. 65 66 fputs_unlocked, fwrite_unlocked, and fprintf_unlocked are 67 extensions and need to be prototyped by hand (since we do not 68 define _GNU_SOURCE). */ 69 70 #if defined HAVE_DECL_PUTC_UNLOCKED && HAVE_DECL_PUTC_UNLOCKED 71 72 # ifdef HAVE_PUTC_UNLOCKED 73 # undef putc 74 # define putc(C, Stream) putc_unlocked (C, Stream) 75 # endif 76 # ifdef HAVE_PUTCHAR_UNLOCKED 77 # undef putchar 78 # define putchar(C) putchar_unlocked (C) 79 # endif 80 # ifdef HAVE_GETC_UNLOCKED 81 # undef getc 82 # define getc(Stream) getc_unlocked (Stream) 83 # endif 84 # ifdef HAVE_GETCHAR_UNLOCKED 85 # undef getchar 86 # define getchar() getchar_unlocked () 87 # endif 88 # ifdef HAVE_FPUTC_UNLOCKED 89 # undef fputc 90 # define fputc(C, Stream) fputc_unlocked (C, Stream) 91 # endif 92 93 # ifdef HAVE_CLEARERR_UNLOCKED 94 # undef clearerr 95 # define clearerr(Stream) clearerr_unlocked (Stream) 96 # if defined (HAVE_DECL_CLEARERR_UNLOCKED) && !HAVE_DECL_CLEARERR_UNLOCKED 97 extern void clearerr_unlocked (FILE *); 98 # endif 99 # endif 100 # ifdef HAVE_FEOF_UNLOCKED 101 # undef feof 102 # define feof(Stream) feof_unlocked (Stream) 103 # if defined (HAVE_DECL_FEOF_UNLOCKED) && !HAVE_DECL_FEOF_UNLOCKED 104 extern int feof_unlocked (FILE *); 105 # endif 106 # endif 107 # ifdef HAVE_FILENO_UNLOCKED 108 # undef fileno 109 # define fileno(Stream) fileno_unlocked (Stream) 110 # if defined (HAVE_DECL_FILENO_UNLOCKED) && !HAVE_DECL_FILENO_UNLOCKED 111 extern int fileno_unlocked (FILE *); 112 # endif 113 # endif 114 # ifdef HAVE_FFLUSH_UNLOCKED 115 # undef fflush 116 # define fflush(Stream) fflush_unlocked (Stream) 117 # if defined (HAVE_DECL_FFLUSH_UNLOCKED) && !HAVE_DECL_FFLUSH_UNLOCKED 118 extern int fflush_unlocked (FILE *); 119 # endif 120 # endif 121 # ifdef HAVE_FGETC_UNLOCKED 122 # undef fgetc 123 # define fgetc(Stream) fgetc_unlocked (Stream) 124 # if defined (HAVE_DECL_FGETC_UNLOCKED) && !HAVE_DECL_FGETC_UNLOCKED 125 extern int fgetc_unlocked (FILE *); 126 # endif 127 # endif 128 # ifdef HAVE_FGETS_UNLOCKED 129 # undef fgets 130 # define fgets(S, n, Stream) fgets_unlocked (S, n, Stream) 131 # if defined (HAVE_DECL_FGETS_UNLOCKED) && !HAVE_DECL_FGETS_UNLOCKED 132 extern char *fgets_unlocked (char *, int, FILE *); 133 # endif 134 # endif 135 # ifdef HAVE_FPUTS_UNLOCKED 136 # undef fputs 137 # define fputs(String, Stream) fputs_unlocked (String, Stream) 138 # if defined (HAVE_DECL_FPUTS_UNLOCKED) && !HAVE_DECL_FPUTS_UNLOCKED 139 extern int fputs_unlocked (const char *, FILE *); 140 # endif 141 # endif 142 # ifdef HAVE_FERROR_UNLOCKED 143 # undef ferror 144 # define ferror(Stream) ferror_unlocked (Stream) 145 # if defined (HAVE_DECL_FERROR_UNLOCKED) && !HAVE_DECL_FERROR_UNLOCKED 146 extern int ferror_unlocked (FILE *); 147 # endif 148 # endif 149 # ifdef HAVE_FREAD_UNLOCKED 150 # undef fread 151 # define fread(Ptr, Size, N, Stream) fread_unlocked (Ptr, Size, N, Stream) 152 # if defined (HAVE_DECL_FREAD_UNLOCKED) && !HAVE_DECL_FREAD_UNLOCKED 153 extern size_t fread_unlocked (void *, size_t, size_t, FILE *); 154 # endif 155 # endif 156 # ifdef HAVE_FWRITE_UNLOCKED 157 # undef fwrite 158 # define fwrite(Ptr, Size, N, Stream) fwrite_unlocked (Ptr, Size, N, Stream) 159 # if defined (HAVE_DECL_FWRITE_UNLOCKED) && !HAVE_DECL_FWRITE_UNLOCKED 160 extern size_t fwrite_unlocked (const void *, size_t, size_t, FILE *); 161 # endif 162 # endif 163 # ifdef HAVE_FPRINTF_UNLOCKED 164 # undef fprintf 165 /* We can't use a function-like macro here because we don't know if 166 we have varargs macros. */ 167 # define fprintf fprintf_unlocked 168 # if defined (HAVE_DECL_FPRINTF_UNLOCKED) && !HAVE_DECL_FPRINTF_UNLOCKED 169 extern int fprintf_unlocked (FILE *, const char *, ...); 170 # endif 171 # endif 172 173 #endif 174 175 /* ??? Glibc's fwrite/fread_unlocked macros cause 176 "warning: signed and unsigned type in conditional expression". */ 177 #undef fread_unlocked 178 #undef fwrite_unlocked 179 180 /* There are an extraordinary number of issues with <ctype.h>. 181 The last straw is that it varies with the locale. Use libiberty's 182 replacement instead. */ 183 #include <safe-ctype.h> 184 185 #include <sys/types.h> 186 187 #include <errno.h> 188 189 #if !defined (errno) && defined (HAVE_DECL_ERRNO) && !HAVE_DECL_ERRNO 190 extern int errno; 191 #endif 192 193 /* Some of glibc's string inlines cause warnings. Plus we'd rather 194 rely on (and therefore test) GCC's string builtins. */ 195 #define __NO_STRING_INLINES 196 197 #ifdef STRING_WITH_STRINGS 198 # include <string.h> 199 # include <strings.h> 200 #else 201 # ifdef HAVE_STRING_H 202 # include <string.h> 203 # else 204 # ifdef HAVE_STRINGS_H 205 # include <strings.h> 206 # endif 207 # endif 208 #endif 209 210 #ifdef HAVE_STDLIB_H 211 # include <stdlib.h> 212 #endif 213 214 /* If we don't have an overriding definition, set SUCCESS_EXIT_CODE and 215 FATAL_EXIT_CODE to EXIT_SUCCESS and EXIT_FAILURE respectively, 216 or 0 and 1 if those macros are not defined. */ 217 #ifndef SUCCESS_EXIT_CODE 218 # ifdef EXIT_SUCCESS 219 # define SUCCESS_EXIT_CODE EXIT_SUCCESS 220 # else 221 # define SUCCESS_EXIT_CODE 0 222 # endif 223 #endif 224 225 #ifndef FATAL_EXIT_CODE 226 # ifdef EXIT_FAILURE 227 # define FATAL_EXIT_CODE EXIT_FAILURE 228 # else 229 # define FATAL_EXIT_CODE 1 230 # endif 231 #endif 232 233 #define ICE_EXIT_CODE 4 234 235 #ifdef HAVE_UNISTD_H 236 # include <unistd.h> 237 #endif 238 239 #ifdef HAVE_SYS_PARAM_H 240 # include <sys/param.h> 241 /* We use this identifier later and it appears in some vendor param.h's. */ 242 # undef PREFETCH 243 #endif 244 245 #if HAVE_LIMITS_H 246 # include <limits.h> 247 #endif 248 249 /* Get definitions of HOST_WIDE_INT and HOST_WIDEST_INT. */ 250 #include "hwint.h" 251 252 /* A macro to determine whether a VALUE lies inclusively within a 253 certain range without evaluating the VALUE more than once. This 254 macro won't warn if the VALUE is unsigned and the LOWER bound is 255 zero, as it would e.g. with "VALUE >= 0 && ...". Note the LOWER 256 bound *is* evaluated twice, and LOWER must not be greater than 257 UPPER. However the bounds themselves can be either positive or 258 negative. */ 259 #define IN_RANGE(VALUE, LOWER, UPPER) \ 260 ((unsigned HOST_WIDE_INT) (VALUE) - (unsigned HOST_WIDE_INT) (LOWER) \ 261 <= (unsigned HOST_WIDE_INT) (UPPER) - (unsigned HOST_WIDE_INT) (LOWER)) 262 263 /* Infrastructure for defining missing _MAX and _MIN macros. Note that 264 macros defined with these cannot be used in #if. */ 265 266 /* The extra casts work around common compiler bugs. */ 267 #define INTTYPE_SIGNED(t) (! ((t) 0 < (t) -1)) 268 /* The outer cast is needed to work around a bug in Cray C 5.0.3.0. 269 It is necessary at least when t == time_t. */ 270 #define INTTYPE_MINIMUM(t) ((t) (INTTYPE_SIGNED (t) \ 271 ? ~ (t) 0 << (sizeof(t) * CHAR_BIT - 1) : (t) 0)) 272 #define INTTYPE_MAXIMUM(t) ((t) (~ (t) 0 - INTTYPE_MINIMUM (t))) 273 274 /* Use that infrastructure to provide a few constants. */ 275 #ifndef UCHAR_MAX 276 # define UCHAR_MAX INTTYPE_MAXIMUM (unsigned char) 277 #endif 278 279 #ifdef TIME_WITH_SYS_TIME 280 # include <sys/time.h> 281 # include <time.h> 282 #else 283 # if HAVE_SYS_TIME_H 284 # include <sys/time.h> 285 # else 286 # ifdef HAVE_TIME_H 287 # include <time.h> 288 # endif 289 # endif 290 #endif 291 292 #ifdef HAVE_FCNTL_H 293 # include <fcntl.h> 294 #else 295 # ifdef HAVE_SYS_FILE_H 296 # include <sys/file.h> 297 # endif 298 #endif 299 300 #ifndef SEEK_SET 301 # define SEEK_SET 0 302 # define SEEK_CUR 1 303 # define SEEK_END 2 304 #endif 305 #ifndef F_OK 306 # define F_OK 0 307 # define X_OK 1 308 # define W_OK 2 309 # define R_OK 4 310 #endif 311 #ifndef O_RDONLY 312 # define O_RDONLY 0 313 #endif 314 #ifndef O_WRONLY 315 # define O_WRONLY 1 316 #endif 317 318 /* Some systems define these in, e.g., param.h. We undefine these names 319 here to avoid the warnings. We prefer to use our definitions since we 320 know they are correct. */ 321 322 #undef MIN 323 #undef MAX 324 #define MIN(X,Y) ((X) < (Y) ? (X) : (Y)) 325 #define MAX(X,Y) ((X) > (Y) ? (X) : (Y)) 326 327 /* Returns the least number N such that N * Y >= X. */ 328 #define CEIL(x,y) (((x) + (y) - 1) / (y)) 329 330 #ifdef HAVE_SYS_WAIT_H 331 #include <sys/wait.h> 332 #endif 333 334 #ifndef WIFSIGNALED 335 #define WIFSIGNALED(S) (((S) & 0xff) != 0 && ((S) & 0xff) != 0x7f) 336 #endif 337 #ifndef WTERMSIG 338 #define WTERMSIG(S) ((S) & 0x7f) 339 #endif 340 #ifndef WIFEXITED 341 #define WIFEXITED(S) (((S) & 0xff) == 0) 342 #endif 343 #ifndef WEXITSTATUS 344 #define WEXITSTATUS(S) (((S) & 0xff00) >> 8) 345 #endif 346 #ifndef WSTOPSIG 347 #define WSTOPSIG WEXITSTATUS 348 #endif 349 #ifndef WCOREDUMP 350 #define WCOREDUMP(S) ((S) & WCOREFLG) 351 #endif 352 #ifndef WCOREFLG 353 #define WCOREFLG 0200 354 #endif 355 356 /* The HAVE_DECL_* macros are three-state, undefined, 0 or 1. If they 357 are defined to 0 then we must provide the relevant declaration 358 here. These checks will be in the undefined state while configure 359 is running so be careful to test "defined (HAVE_DECL_*)". */ 360 361 #if defined (HAVE_DECL_ATOF) && !HAVE_DECL_ATOF 362 extern double atof (const char *); 363 #endif 364 365 #if defined (HAVE_DECL_ATOL) && !HAVE_DECL_ATOL 366 extern long atol (const char *); 367 #endif 368 369 #if defined (HAVE_DECL_FREE) && !HAVE_DECL_FREE 370 extern void free (void *); 371 #endif 372 373 #if defined (HAVE_DECL_GETCWD) && !HAVE_DECL_GETCWD 374 extern char *getcwd (char *, size_t); 375 #endif 376 377 #if defined (HAVE_DECL_GETENV) && !HAVE_DECL_GETENV 378 extern char *getenv (const char *); 379 #endif 380 381 #if defined (HAVE_DECL_GETOPT) && !HAVE_DECL_GETOPT 382 extern int getopt (int, char * const *, const char *); 383 #endif 384 385 #if defined (HAVE_DECL_GETPAGESIZE) && !HAVE_DECL_GETPAGESIZE 386 extern int getpagesize (void); 387 #endif 388 389 #if defined (HAVE_DECL_GETWD) && !HAVE_DECL_GETWD 390 extern char *getwd (char *); 391 #endif 392 393 #if defined (HAVE_DECL_SBRK) && !HAVE_DECL_SBRK 394 extern void *sbrk (int); 395 #endif 396 397 #if defined (HAVE_DECL_STRSTR) && !HAVE_DECL_STRSTR 398 extern char *strstr (const char *, const char *); 399 #endif 400 401 #ifdef HAVE_MALLOC_H 402 #include <malloc.h> 403 #endif 404 405 #if defined (HAVE_DECL_MALLOC) && !HAVE_DECL_MALLOC 406 extern void *malloc (size_t); 407 #endif 408 409 #if defined (HAVE_DECL_CALLOC) && !HAVE_DECL_CALLOC 410 extern void *calloc (size_t, size_t); 411 #endif 412 413 #if defined (HAVE_DECL_REALLOC) && !HAVE_DECL_REALLOC 414 extern void *realloc (void *, size_t); 415 #endif 416 417 #ifdef HAVE_STDINT_H 418 #include <stdint.h> 419 #endif 420 421 #ifdef HAVE_INTTYPES_H 422 #include <inttypes.h> 423 #endif 424 425 /* If the system doesn't provide strsignal, we get it defined in 426 libiberty but no declaration is supplied. */ 427 #if !defined (HAVE_STRSIGNAL) \ 428 || (defined (HAVE_DECL_STRSIGNAL) && !HAVE_DECL_STRSIGNAL) 429 # ifndef strsignal 430 extern const char *strsignal (int); 431 # endif 432 #endif 433 434 #ifdef HAVE_GETRLIMIT 435 # if defined (HAVE_DECL_GETRLIMIT) && !HAVE_DECL_GETRLIMIT 436 # ifndef getrlimit 437 struct rlimit; 438 extern int getrlimit (int, struct rlimit *); 439 # endif 440 # endif 441 #endif 442 443 #ifdef HAVE_SETRLIMIT 444 # if defined (HAVE_DECL_SETRLIMIT) && !HAVE_DECL_SETRLIMIT 445 # ifndef setrlimit 446 struct rlimit; 447 extern int setrlimit (int, const struct rlimit *); 448 # endif 449 # endif 450 #endif 451 452 #if defined (HAVE_DECL_ABORT) && !HAVE_DECL_ABORT 453 extern void abort (void); 454 #endif 455 456 #if defined (HAVE_DECL_SNPRINTF) && !HAVE_DECL_SNPRINTF 457 extern int snprintf (char *, size_t, const char *, ...); 458 #endif 459 460 #if defined (HAVE_DECL_VSNPRINTF) && !HAVE_DECL_VSNPRINTF 461 extern int vsnprintf(char *, size_t, const char *, va_list); 462 #endif 463 464 /* 1 if we have C99 designated initializers. */ 465 #if !defined(HAVE_DESIGNATED_INITIALIZERS) 466 #define HAVE_DESIGNATED_INITIALIZERS \ 467 (((GCC_VERSION >= 2007) || (__STDC_VERSION__ >= 199901L)) \ 468 && !defined(__cplusplus)) 469 #endif 470 471 #if HAVE_SYS_STAT_H 472 # include <sys/stat.h> 473 #endif 474 475 /* Test if something is a normal file. */ 476 #ifndef S_ISREG 477 #define S_ISREG(m) (((m) & S_IFMT) == S_IFREG) 478 #endif 479 480 /* Test if something is a directory. */ 481 #ifndef S_ISDIR 482 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR) 483 #endif 484 485 /* Test if something is a character special file. */ 486 #ifndef S_ISCHR 487 #define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR) 488 #endif 489 490 /* Test if something is a block special file. */ 491 #ifndef S_ISBLK 492 #define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK) 493 #endif 494 495 /* Test if something is a socket. */ 496 #ifndef S_ISSOCK 497 # ifdef S_IFSOCK 498 # define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK) 499 # else 500 # define S_ISSOCK(m) 0 501 # endif 502 #endif 503 504 /* Test if something is a FIFO. */ 505 #ifndef S_ISFIFO 506 # ifdef S_IFIFO 507 # define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO) 508 # else 509 # define S_ISFIFO(m) 0 510 # endif 511 #endif 512 513 /* Define well known filenos if the system does not define them. */ 514 #ifndef STDIN_FILENO 515 # define STDIN_FILENO 0 516 #endif 517 #ifndef STDOUT_FILENO 518 # define STDOUT_FILENO 1 519 #endif 520 #ifndef STDERR_FILENO 521 # define STDERR_FILENO 2 522 #endif 523 524 /* Some systems have mkdir that takes a single argument. */ 525 #ifdef MKDIR_TAKES_ONE_ARG 526 # define mkdir(a,b) mkdir(a) 527 #endif 528 529 /* Provide a way to print an address via printf. */ 530 #ifndef HOST_PTR_PRINTF 531 #define HOST_PTR_PRINTF "%p" 532 #endif /* ! HOST_PTR_PRINTF */ 533 534 /* By default, colon separates directories in a path. */ 535 #ifndef PATH_SEPARATOR 536 #define PATH_SEPARATOR ':' 537 #endif 538 539 /* Filename handling macros. */ 540 #include "filenames.h" 541 542 /* These should be phased out in favor of IS_DIR_SEPARATOR, where possible. */ 543 #ifndef DIR_SEPARATOR 544 # define DIR_SEPARATOR '/' 545 # ifdef HAVE_DOS_BASED_FILE_SYSTEM 546 # define DIR_SEPARATOR_2 '\\' 547 # endif 548 #endif 549 550 /* Get libiberty declarations. */ 551 #include "libiberty.h" 552 553 /* Provide a default for the HOST_BIT_BUCKET. 554 This suffices for POSIX-like hosts. */ 555 556 #ifndef HOST_BIT_BUCKET 557 #define HOST_BIT_BUCKET "/dev/null" 558 #endif 559 560 /* Be conservative and only use enum bitfields with GCC. 561 FIXME: provide a complete autoconf test for buggy enum bitfields. */ 562 563 #if (GCC_VERSION > 2000) 564 #define ENUM_BITFIELD(TYPE) __extension__ enum TYPE 565 #else 566 #define ENUM_BITFIELD(TYPE) unsigned int 567 #endif 568 569 #ifndef offsetof 570 #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *) 0)->MEMBER) 571 #endif 572 573 /* Various error reporting routines want to use __FUNCTION__. */ 574 #if (GCC_VERSION < 2007) 575 #ifndef __FUNCTION__ 576 #define __FUNCTION__ "?" 577 #endif /* ! __FUNCTION__ */ 578 #endif 579 580 /* __builtin_expect(A, B) evaluates to A, but notifies the compiler that 581 the most likely value of A is B. This feature was added at some point 582 between 2.95 and 3.0. Let's use 3.0 as the lower bound for now. */ 583 #if (GCC_VERSION < 3000) 584 #define __builtin_expect(a, b) (a) 585 #endif 586 587 /* Redefine abort to report an internal error w/o coredump, and 588 reporting the location of the error in the source file. */ 589 extern void fancy_abort (const char *, int, const char *) ATTRIBUTE_NORETURN; 590 #define abort() fancy_abort (__FILE__, __LINE__, __FUNCTION__) 591 592 /* Use gcc_assert(EXPR) to test invariants. */ 593 #if ENABLE_ASSERT_CHECKING 594 #define gcc_assert(EXPR) \ 595 ((void)(!(EXPR) ? fancy_abort (__FILE__, __LINE__, __FUNCTION__), 0 : 0)) 596 #elif (GCC_VERSION >= 4005) 597 #define gcc_assert(EXPR) \ 598 ((void)(__builtin_expect(!(EXPR), 0) ? __builtin_unreachable(), 0 : 0)) 599 #else 600 /* Include EXPR, so that unused variable warnings do not occur. */ 601 #define gcc_assert(EXPR) ((void)(0 && (EXPR))) 602 #endif 603 604 /* Use gcc_unreachable() to mark unreachable locations (like an 605 unreachable default case of a switch. Do not use gcc_assert(0). */ 606 #if (GCC_VERSION >= 4005) && !ENABLE_ASSERT_CHECKING 607 #define gcc_unreachable() __builtin_unreachable() 608 #else 609 #define gcc_unreachable() (fancy_abort (__FILE__, __LINE__, __FUNCTION__)) 610 #endif 611 612 /* Provide a fake boolean type. We make no attempt to use the 613 C99 _Bool, as it may not be available in the bootstrap compiler, 614 and even if it is, it is liable to be buggy. 615 This must be after all inclusion of system headers, as some of 616 them will mess us up. */ 617 618 #undef TRUE 619 #undef FALSE 620 621 #ifdef __cplusplus 622 /* Obsolete. */ 623 # define TRUE true 624 # define FALSE false 625 #else /* !__cplusplus */ 626 # undef bool 627 # undef true 628 # undef false 629 630 # define bool unsigned char 631 # define true 1 632 # define false 0 633 634 /* Obsolete. */ 635 # define TRUE true 636 # define FALSE false 637 #endif /* !__cplusplus */ 638 639 /* Some compilers do not allow the use of unsigned char in bitfields. */ 640 #define BOOL_BITFIELD unsigned int 641 642 /* As the last action in this file, we poison the identifiers that 643 shouldn't be used. Note, luckily gcc-3.0's token-based integrated 644 preprocessor won't trip on poisoned identifiers that arrive from 645 the expansion of macros. E.g. #define strrchr rindex, won't error 646 if rindex is poisoned after this directive is issued and later on 647 strrchr is called. 648 649 Note: We define bypass macros for the few cases where we really 650 want to use the libc memory allocation routines. Otherwise we 651 insist you use the "x" versions from libiberty. */ 652 653 #define really_call_malloc malloc 654 #define really_call_calloc calloc 655 #define really_call_realloc realloc 656 657 #if defined(FLEX_SCANNER) || defined(YYBISON) || defined(YYBYACC) 658 /* Flex and bison use malloc and realloc. Yuk. Note that this means 659 really_call_* cannot be used in a .l or .y file. */ 660 #define malloc xmalloc 661 #define realloc xrealloc 662 #endif 663 664 #if (GCC_VERSION >= 3000) 665 666 /* Note autoconf checks for prototype declarations and includes 667 system.h while doing so. Only poison these tokens if actually 668 compiling gcc, so that the autoconf declaration tests for malloc 669 etc don't spuriously fail. */ 670 #ifdef IN_GCC 671 #undef calloc 672 #undef strdup 673 #pragma GCC poison calloc strdup 674 675 #if !defined(FLEX_SCANNER) && !defined(YYBISON) 676 #undef malloc 677 #undef realloc 678 #pragma GCC poison malloc realloc 679 #endif 680 681 /* Old target macros that have moved to the target hooks structure. */ 682 #pragma GCC poison ASM_OPEN_PAREN ASM_CLOSE_PAREN \ 683 FUNCTION_PROLOGUE FUNCTION_EPILOGUE \ 684 FUNCTION_END_PROLOGUE FUNCTION_BEGIN_EPILOGUE \ 685 DECL_MACHINE_ATTRIBUTES COMP_TYPE_ATTRIBUTES INSERT_ATTRIBUTES \ 686 VALID_MACHINE_DECL_ATTRIBUTE VALID_MACHINE_TYPE_ATTRIBUTE \ 687 SET_DEFAULT_TYPE_ATTRIBUTES SET_DEFAULT_DECL_ATTRIBUTES \ 688 MERGE_MACHINE_TYPE_ATTRIBUTES MERGE_MACHINE_DECL_ATTRIBUTES \ 689 MD_INIT_BUILTINS MD_EXPAND_BUILTIN ASM_OUTPUT_CONSTRUCTOR \ 690 ASM_OUTPUT_DESTRUCTOR SIGNED_CHAR_SPEC MAX_CHAR_TYPE_SIZE \ 691 WCHAR_UNSIGNED UNIQUE_SECTION SELECT_SECTION SELECT_RTX_SECTION \ 692 ENCODE_SECTION_INFO STRIP_NAME_ENCODING ASM_GLOBALIZE_LABEL \ 693 ASM_OUTPUT_MI_THUNK CONST_COSTS RTX_COSTS DEFAULT_RTX_COSTS \ 694 ADDRESS_COST MACHINE_DEPENDENT_REORG ASM_FILE_START ASM_FILE_END \ 695 ASM_SIMPLIFY_DWARF_ADDR INIT_TARGET_OPTABS INIT_SUBTARGET_OPTABS \ 696 INIT_GOFAST_OPTABS MULSI3_LIBCALL MULDI3_LIBCALL DIVSI3_LIBCALL \ 697 DIVDI3_LIBCALL UDIVSI3_LIBCALL UDIVDI3_LIBCALL MODSI3_LIBCALL \ 698 MODDI3_LIBCALL UMODSI3_LIBCALL UMODDI3_LIBCALL BUILD_VA_LIST_TYPE \ 699 PRETEND_OUTGOING_VARARGS_NAMED STRUCT_VALUE_INCOMING_REGNUM \ 700 ASM_OUTPUT_SECTION_NAME PROMOTE_FUNCTION_ARGS PROMOTE_FUNCTION_MODE \ 701 STRUCT_VALUE_INCOMING STRICT_ARGUMENT_NAMING \ 702 PROMOTE_FUNCTION_RETURN PROMOTE_PROTOTYPES STRUCT_VALUE_REGNUM \ 703 SETUP_INCOMING_VARARGS EXPAND_BUILTIN_SAVEREGS \ 704 DEFAULT_SHORT_ENUMS SPLIT_COMPLEX_ARGS MD_ASM_CLOBBERS \ 705 HANDLE_PRAGMA_REDEFINE_EXTNAME HANDLE_PRAGMA_EXTERN_PREFIX \ 706 MUST_PASS_IN_STACK FUNCTION_ARG_PASS_BY_REFERENCE \ 707 VECTOR_MODE_SUPPORTED_P TARGET_SUPPORTS_HIDDEN \ 708 FUNCTION_ARG_PARTIAL_NREGS ASM_OUTPUT_DWARF_DTPREL \ 709 ALLOCATE_INITIAL_VALUE LEGITIMIZE_ADDRESS FRAME_POINTER_REQUIRED \ 710 CAN_ELIMINATE TRAMPOLINE_TEMPLATE INITIALIZE_TRAMPOLINE \ 711 TRAMPOLINE_ADJUST_ADDRESS STATIC_CHAIN STATIC_CHAIN_INCOMING 712 713 /* Other obsolete target macros, or macros that used to be in target 714 headers and were not used, and may be obsolete or may never have 715 been used. */ 716 #pragma GCC poison INT_ASM_OP ASM_OUTPUT_EH_REGION_BEG CPP_PREDEFINES \ 717 ASM_OUTPUT_EH_REGION_END ASM_OUTPUT_LABELREF_AS_INT SMALL_STACK \ 718 DOESNT_NEED_UNWINDER EH_TABLE_LOOKUP OBJC_SELECTORS_WITHOUT_LABELS \ 719 OMIT_EH_TABLE EASY_DIV_EXPR IMPLICIT_FIX_EXPR \ 720 LONGJMP_RESTORE_FROM_STACK MAX_INT_TYPE_SIZE ASM_IDENTIFY_GCC \ 721 STDC_VALUE TRAMPOLINE_ALIGN ASM_IDENTIFY_GCC_AFTER_SOURCE \ 722 SLOW_ZERO_EXTEND SUBREG_REGNO_OFFSET DWARF_LINE_MIN_INSTR_LENGTH \ 723 TRADITIONAL_RETURN_FLOAT NO_BUILTIN_SIZE_TYPE \ 724 NO_BUILTIN_PTRDIFF_TYPE NO_BUILTIN_WCHAR_TYPE NO_BUILTIN_WINT_TYPE \ 725 BLOCK_PROFILER BLOCK_PROFILER_CODE FUNCTION_BLOCK_PROFILER \ 726 FUNCTION_BLOCK_PROFILER_EXIT MACHINE_STATE_SAVE \ 727 MACHINE_STATE_RESTORE SCCS_DIRECTIVE SECTION_ASM_OP BYTEORDER \ 728 ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL HOST_WORDS_BIG_ENDIAN \ 729 OBJC_PROLOGUE ALLOCATE_TRAMPOLINE HANDLE_PRAGMA ROUND_TYPE_SIZE \ 730 ROUND_TYPE_SIZE_UNIT CONST_SECTION_ASM_OP CRT_GET_RFIB_TEXT \ 731 DBX_LBRAC_FIRST DBX_OUTPUT_ENUM DBX_OUTPUT_SOURCE_FILENAME \ 732 DBX_WORKING_DIRECTORY INSN_CACHE_DEPTH INSN_CACHE_SIZE \ 733 INSN_CACHE_LINE_WIDTH INIT_SECTION_PREAMBLE NEED_ATEXIT ON_EXIT \ 734 EXIT_BODY OBJECT_FORMAT_ROSE MULTIBYTE_CHARS MAP_CHARACTER \ 735 LIBGCC_NEEDS_DOUBLE FINAL_PRESCAN_LABEL DEFAULT_CALLER_SAVES \ 736 LOAD_ARGS_REVERSED MAX_INTEGER_COMPUTATION_MODE \ 737 CONVERT_HARD_REGISTER_TO_SSA_P ASM_OUTPUT_MAIN_SOURCE_FILENAME \ 738 FIRST_INSN_ADDRESS TEXT_SECTION SHARED_BSS_SECTION_ASM_OP \ 739 PROMOTED_MODE EXPAND_BUILTIN_VA_END \ 740 LINKER_DOES_NOT_WORK_WITH_DWARF2 FUNCTION_ARG_KEEP_AS_REFERENCE \ 741 GIV_SORT_CRITERION MAX_LONG_TYPE_SIZE MAX_LONG_DOUBLE_TYPE_SIZE \ 742 MAX_WCHAR_TYPE_SIZE SHARED_SECTION_ASM_OP INTEGRATE_THRESHOLD \ 743 FINAL_REG_PARM_STACK_SPACE MAYBE_REG_PARM_STACK_SPACE \ 744 TRADITIONAL_PIPELINE_INTERFACE DFA_PIPELINE_INTERFACE \ 745 DBX_OUTPUT_STANDARD_TYPES BUILTIN_SETJMP_FRAME_VALUE \ 746 SUNOS4_SHARED_LIBRARIES PROMOTE_FOR_CALL_ONLY \ 747 SPACE_AFTER_L_OPTION NO_RECURSIVE_FUNCTION_CSE \ 748 DEFAULT_MAIN_RETURN TARGET_MEM_FUNCTIONS EXPAND_BUILTIN_VA_ARG \ 749 COLLECT_PARSE_FLAG DWARF2_GENERATE_TEXT_SECTION_LABEL WINNING_GDB \ 750 ASM_OUTPUT_FILENAME ASM_OUTPUT_SOURCE_LINE FILE_NAME_JOINER \ 751 GDB_INV_REF_REGPARM_STABS_LETTER DBX_MEMPARM_STABS_LETTER \ 752 PUT_SDB_SRC_FILE STABS_GCC_MARKER DBX_OUTPUT_FUNCTION_END \ 753 DBX_OUTPUT_GCC_MARKER DBX_FINISH_SYMBOL SDB_GENERATE_FAKE \ 754 NON_SAVING_SETJMP TARGET_LATE_RTL_PROLOGUE_EPILOGUE \ 755 CASE_DROPS_THROUGH TARGET_BELL TARGET_BS TARGET_CR TARGET_DIGIT0 \ 756 TARGET_ESC TARGET_FF TARGET_NEWLINE TARGET_TAB TARGET_VT \ 757 LINK_LIBGCC_SPECIAL DONT_ACCESS_GBLS_AFTER_EPILOGUE \ 758 TARGET_OPTIONS TARGET_SWITCHES EXTRA_CC_MODES FINALIZE_PIC \ 759 PREDICATE_CODES SPECIAL_MODE_PREDICATES UNALIGNED_WORD_ASM_OP \ 760 EXTRA_SECTIONS EXTRA_SECTION_FUNCTIONS READONLY_DATA_SECTION \ 761 TARGET_ASM_EXCEPTION_SECTION TARGET_ASM_EH_FRAME_SECTION \ 762 SMALL_ARG_MAX ASM_OUTPUT_SHARED_BSS ASM_OUTPUT_SHARED_COMMON \ 763 ASM_OUTPUT_SHARED_LOCAL ASM_MAKE_LABEL_LINKONCE \ 764 STACK_CHECK_PROBE_INTERVAL STACK_CHECK_PROBE_LOAD 765 766 /* Hooks that are no longer used. */ 767 #pragma GCC poison LANG_HOOKS_FUNCTION_MARK LANG_HOOKS_FUNCTION_FREE \ 768 LANG_HOOKS_MARK_TREE LANG_HOOKS_INSERT_DEFAULT_ATTRIBUTES \ 769 LANG_HOOKS_TREE_INLINING_ESTIMATE_NUM_INSNS \ 770 LANG_HOOKS_PUSHLEVEL LANG_HOOKS_SET_BLOCK \ 771 LANG_HOOKS_MAYBE_BUILD_CLEANUP LANG_HOOKS_UPDATE_DECL_AFTER_SAVING \ 772 LANG_HOOKS_POPLEVEL LANG_HOOKS_TRUTHVALUE_CONVERSION \ 773 TARGET_PROMOTE_FUNCTION_ARGS TARGET_PROMOTE_FUNCTION_RETURN 774 775 /* Miscellaneous macros that are no longer used. */ 776 #pragma GCC poison USE_MAPPED_LOCATION 777 778 /* Libiberty macros that are no longer used in GCC. */ 779 #undef ANSI_PROTOTYPES 780 #undef PTR_CONST 781 #undef LONG_DOUBLE 782 #undef VPARAMS 783 #undef VA_OPEN 784 #undef VA_FIXEDARG 785 #undef VA_CLOSE 786 #undef VA_START 787 #pragma GCC poison ANSI_PROTOTYPES PTR_CONST LONG_DOUBLE VPARAMS VA_OPEN \ 788 VA_FIXEDARG VA_CLOSE VA_START 789 #endif /* IN_GCC */ 790 791 /* Note: not all uses of the `index' token (e.g. variable names and 792 structure members) have been eliminated. */ 793 #undef bcopy 794 #undef bzero 795 #undef bcmp 796 #undef rindex 797 #pragma GCC poison bcopy bzero bcmp rindex 798 799 #endif /* GCC >= 3.0 */ 800 801 /* This macro allows casting away const-ness to pass -Wcast-qual 802 warnings. DO NOT USE THIS UNLESS YOU REALLY HAVE TO! It should 803 only be used in certain specific cases. One valid case is where 804 the C standard definitions or prototypes force you to. E.g. if you 805 need to free a const object, or if you pass a const string to 806 execv, et al. Another valid use would be in an allocation function 807 that creates const objects that need to be initialized. In some 808 cases we have non-const functions that return the argument 809 (e.g. next_nonnote_insn). Rather than create const shadow 810 functions, we can cast away const-ness in calling these interfaces 811 if we're careful to verify that the called function does indeed not 812 modify its argument and the return value is only used in a const 813 context. (This can be somewhat dangerous as these assumptions can 814 change after the fact). Beyond these uses, most other cases of 815 using this macro should be viewed with extreme caution. */ 816 817 #ifdef __cplusplus 818 #define CONST_CAST2(TOTYPE,FROMTYPE,X) (const_cast<TOTYPE> (X)) 819 #else 820 #if defined(__GNUC__) && GCC_VERSION > 4000 821 /* GCC 4.0.x has a bug where it may ICE on this expression, 822 so does GCC 3.4.x (PR17436). */ 823 #define CONST_CAST2(TOTYPE,FROMTYPE,X) ((__extension__(union {FROMTYPE _q; TOTYPE _nq;})(X))._nq) 824 #else 825 #define CONST_CAST2(TOTYPE,FROMTYPE,X) ((TOTYPE)(FROMTYPE)(X)) 826 #endif 827 #endif 828 #define CONST_CAST(TYPE,X) CONST_CAST2(TYPE, const TYPE, (X)) 829 #define CONST_CAST_TREE(X) CONST_CAST(union tree_node *, (X)) 830 #define CONST_CAST_RTX(X) CONST_CAST(struct rtx_def *, (X)) 831 #define CONST_CAST_BB(X) CONST_CAST(struct basic_block_def *, (X)) 832 #define CONST_CAST_GIMPLE(X) CONST_CAST(union gimple_statement_d *, (X)) 833 834 /* Activate certain diagnostics as warnings (not errors via the 835 -Werror flag). */ 836 #if GCC_VERSION >= 4003 837 /* If asserts are disabled, activate -Wuninitialized as a warning (not 838 an error/-Werror). */ 839 #ifndef ENABLE_ASSERT_CHECKING 840 #pragma GCC diagnostic warning "-Wuninitialized" 841 #endif 842 #endif 843 844 #ifdef ENABLE_VALGRIND_CHECKING 845 # ifdef HAVE_VALGRIND_MEMCHECK_H 846 # include <valgrind/memcheck.h> 847 # elif defined HAVE_MEMCHECK_H 848 # include <memcheck.h> 849 # else 850 # include <valgrind.h> 851 # endif 852 /* Compatibility macros to let valgrind 3.1 work. */ 853 # ifndef VALGRIND_MAKE_MEM_NOACCESS 854 # define VALGRIND_MAKE_MEM_NOACCESS VALGRIND_MAKE_NOACCESS 855 # endif 856 # ifndef VALGRIND_MAKE_MEM_DEFINED 857 # define VALGRIND_MAKE_MEM_DEFINED VALGRIND_MAKE_READABLE 858 # endif 859 # ifndef VALGRIND_MAKE_MEM_UNDEFINED 860 # define VALGRIND_MAKE_MEM_UNDEFINED VALGRIND_MAKE_WRITABLE 861 # endif 862 #else 863 /* Avoid #ifdef:s when we can help it. */ 864 #define VALGRIND_DISCARD(x) 865 #define VALGRIND_MALLOCLIKE_BLOCK(w,x,y,z) 866 #define VALGRIND_FREELIKE_BLOCK(x,y) 867 #endif 868 869 #endif /* ! GCC_SYSTEM_H */ 870