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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [system.h] - Blame information for rev 280

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1 280 jeremybenn
/* 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 */

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