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