Mercurial > hg > CbC > CbC_gcc
comparison libcpp/system.h @ 0:a06113de4d67
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author | kent <kent@cr.ie.u-ryukyu.ac.jp> |
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date | Fri, 17 Jul 2009 14:47:48 +0900 (2009-07-17) |
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children | f6334be47118 |
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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, 2009 | |
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 LIBCPP_SYSTEM_H | |
24 #define LIBCPP_SYSTEM_H | |
25 | |
26 /* We must include stdarg.h before stdio.h. */ | |
27 #include <stdarg.h> | |
28 | |
29 #ifdef HAVE_STDDEF_H | |
30 # include <stddef.h> | |
31 #endif | |
32 | |
33 #include <stdio.h> | |
34 | |
35 /* Define a generic NULL if one hasn't already been defined. */ | |
36 #ifndef NULL | |
37 #define NULL 0 | |
38 #endif | |
39 | |
40 /* Use the unlocked open routines from libiberty. */ | |
41 #define fopen(PATH,MODE) fopen_unlocked(PATH,MODE) | |
42 #define fdopen(FILDES,MODE) fdopen_unlocked(FILDES,MODE) | |
43 #define freopen(PATH,MODE,STREAM) freopen_unlocked(PATH,MODE,STREAM) | |
44 | |
45 /* The compiler is not a multi-threaded application and therefore we | |
46 do not have to use the locking functions. In fact, using the locking | |
47 functions can cause the compiler to be significantly slower under | |
48 I/O bound conditions (such as -g -O0 on very large source files). | |
49 | |
50 HAVE_DECL_PUTC_UNLOCKED actually indicates whether or not the stdio | |
51 code is multi-thread safe by default. If it is set to 0, then do | |
52 not worry about using the _unlocked functions. | |
53 | |
54 fputs_unlocked, fwrite_unlocked, and fprintf_unlocked are | |
55 extensions and need to be prototyped by hand (since we do not | |
56 define _GNU_SOURCE). */ | |
57 | |
58 #if defined HAVE_DECL_PUTC_UNLOCKED && HAVE_DECL_PUTC_UNLOCKED | |
59 | |
60 # ifdef HAVE_PUTC_UNLOCKED | |
61 # undef putc | |
62 # define putc(C, Stream) putc_unlocked (C, Stream) | |
63 # endif | |
64 # ifdef HAVE_PUTCHAR_UNLOCKED | |
65 # undef putchar | |
66 # define putchar(C) putchar_unlocked (C) | |
67 # endif | |
68 # ifdef HAVE_GETC_UNLOCKED | |
69 # undef getc | |
70 # define getc(Stream) getc_unlocked (Stream) | |
71 # endif | |
72 # ifdef HAVE_GETCHAR_UNLOCKED | |
73 # undef getchar | |
74 # define getchar() getchar_unlocked () | |
75 # endif | |
76 # ifdef HAVE_FPUTC_UNLOCKED | |
77 # undef fputc | |
78 # define fputc(C, Stream) fputc_unlocked (C, Stream) | |
79 # endif | |
80 | |
81 # ifdef HAVE_CLEARERR_UNLOCKED | |
82 # undef clearerr | |
83 # define clearerr(Stream) clearerr_unlocked (Stream) | |
84 # if defined (HAVE_DECL_CLEARERR_UNLOCKED) && !HAVE_DECL_CLEARERR_UNLOCKED | |
85 extern void clearerr_unlocked (FILE *); | |
86 # endif | |
87 # endif | |
88 # ifdef HAVE_FEOF_UNLOCKED | |
89 # undef feof | |
90 # define feof(Stream) feof_unlocked (Stream) | |
91 # if defined (HAVE_DECL_FEOF_UNLOCKED) && !HAVE_DECL_FEOF_UNLOCKED | |
92 extern int feof_unlocked (FILE *); | |
93 # endif | |
94 # endif | |
95 # ifdef HAVE_FILENO_UNLOCKED | |
96 # undef fileno | |
97 # define fileno(Stream) fileno_unlocked (Stream) | |
98 # if defined (HAVE_DECL_FILENO_UNLOCKED) && !HAVE_DECL_FILENO_UNLOCKED | |
99 extern int fileno_unlocked (FILE *); | |
100 # endif | |
101 # endif | |
102 # ifdef HAVE_FFLUSH_UNLOCKED | |
103 # undef fflush | |
104 # define fflush(Stream) fflush_unlocked (Stream) | |
105 # if defined (HAVE_DECL_FFLUSH_UNLOCKED) && !HAVE_DECL_FFLUSH_UNLOCKED | |
106 extern int fflush_unlocked (FILE *); | |
107 # endif | |
108 # endif | |
109 # ifdef HAVE_FGETC_UNLOCKED | |
110 # undef fgetc | |
111 # define fgetc(Stream) fgetc_unlocked (Stream) | |
112 # if defined (HAVE_DECL_FGETC_UNLOCKED) && !HAVE_DECL_FGETC_UNLOCKED | |
113 extern int fgetc_unlocked (FILE *); | |
114 # endif | |
115 # endif | |
116 # ifdef HAVE_FGETS_UNLOCKED | |
117 # undef fgets | |
118 # define fgets(S, n, Stream) fgets_unlocked (S, n, Stream) | |
119 # if defined (HAVE_DECL_FGETS_UNLOCKED) && !HAVE_DECL_FGETS_UNLOCKED | |
120 extern char *fgets_unlocked (char *, int, FILE *); | |
121 # endif | |
122 # endif | |
123 # ifdef HAVE_FPUTS_UNLOCKED | |
124 # undef fputs | |
125 # define fputs(String, Stream) fputs_unlocked (String, Stream) | |
126 # if defined (HAVE_DECL_FPUTS_UNLOCKED) && !HAVE_DECL_FPUTS_UNLOCKED | |
127 extern int fputs_unlocked (const char *, FILE *); | |
128 # endif | |
129 # endif | |
130 # ifdef HAVE_FERROR_UNLOCKED | |
131 # undef ferror | |
132 # define ferror(Stream) ferror_unlocked (Stream) | |
133 # if defined (HAVE_DECL_FERROR_UNLOCKED) && !HAVE_DECL_FERROR_UNLOCKED | |
134 extern int ferror_unlocked (FILE *); | |
135 # endif | |
136 # endif | |
137 # ifdef HAVE_FREAD_UNLOCKED | |
138 # undef fread | |
139 # define fread(Ptr, Size, N, Stream) fread_unlocked (Ptr, Size, N, Stream) | |
140 # if defined (HAVE_DECL_FREAD_UNLOCKED) && !HAVE_DECL_FREAD_UNLOCKED | |
141 extern size_t fread_unlocked (void *, size_t, size_t, FILE *); | |
142 # endif | |
143 # endif | |
144 # ifdef HAVE_FWRITE_UNLOCKED | |
145 # undef fwrite | |
146 # define fwrite(Ptr, Size, N, Stream) fwrite_unlocked (Ptr, Size, N, Stream) | |
147 # if defined (HAVE_DECL_FWRITE_UNLOCKED) && !HAVE_DECL_FWRITE_UNLOCKED | |
148 extern size_t fwrite_unlocked (const void *, size_t, size_t, FILE *); | |
149 # endif | |
150 # endif | |
151 # ifdef HAVE_FPRINTF_UNLOCKED | |
152 # undef fprintf | |
153 /* We can't use a function-like macro here because we don't know if | |
154 we have varargs macros. */ | |
155 # define fprintf fprintf_unlocked | |
156 # if defined (HAVE_DECL_FPRINTF_UNLOCKED) && !HAVE_DECL_FPRINTF_UNLOCKED | |
157 extern int fprintf_unlocked (FILE *, const char *, ...); | |
158 # endif | |
159 # endif | |
160 | |
161 #endif | |
162 | |
163 /* ??? Glibc's fwrite/fread_unlocked macros cause | |
164 "warning: signed and unsigned type in conditional expression". */ | |
165 #undef fread_unlocked | |
166 #undef fwrite_unlocked | |
167 | |
168 #include <sys/types.h> | |
169 #include <errno.h> | |
170 | |
171 #if !defined (errno) && defined (HAVE_DECL_ERRNO) && !HAVE_DECL_ERRNO | |
172 extern int errno; | |
173 #endif | |
174 | |
175 /* Some of glibc's string inlines cause warnings. Plus we'd rather | |
176 rely on (and therefore test) GCC's string builtins. */ | |
177 #define __NO_STRING_INLINES | |
178 | |
179 #ifdef STRING_WITH_STRINGS | |
180 # include <string.h> | |
181 # include <strings.h> | |
182 #else | |
183 # ifdef HAVE_STRING_H | |
184 # include <string.h> | |
185 # else | |
186 # ifdef HAVE_STRINGS_H | |
187 # include <strings.h> | |
188 # endif | |
189 # endif | |
190 #endif | |
191 | |
192 #ifdef HAVE_STDLIB_H | |
193 # include <stdlib.h> | |
194 #endif | |
195 | |
196 #ifdef HAVE_UNISTD_H | |
197 # include <unistd.h> | |
198 #endif | |
199 | |
200 #if HAVE_LIMITS_H | |
201 # include <limits.h> | |
202 #endif | |
203 | |
204 /* Infrastructure for defining missing _MAX and _MIN macros. Note that | |
205 macros defined with these cannot be used in #if. */ | |
206 | |
207 /* The extra casts work around common compiler bugs. */ | |
208 #define INTTYPE_SIGNED(t) (! ((t) 0 < (t) -1)) | |
209 /* The outer cast is needed to work around a bug in Cray C 5.0.3.0. | |
210 It is necessary at least when t == time_t. */ | |
211 #define INTTYPE_MINIMUM(t) ((t) (INTTYPE_SIGNED (t) \ | |
212 ? ~ (t) 0 << (sizeof(t) * CHAR_BIT - 1) : (t) 0)) | |
213 #define INTTYPE_MAXIMUM(t) ((t) (~ (t) 0 - INTTYPE_MINIMUM (t))) | |
214 | |
215 /* Use that infrastructure to provide a few constants. */ | |
216 #ifndef UCHAR_MAX | |
217 # define UCHAR_MAX INTTYPE_MAXIMUM (unsigned char) | |
218 #endif | |
219 | |
220 #ifdef TIME_WITH_SYS_TIME | |
221 # include <sys/time.h> | |
222 # include <time.h> | |
223 #else | |
224 # if HAVE_SYS_TIME_H | |
225 # include <sys/time.h> | |
226 # else | |
227 # ifdef HAVE_TIME_H | |
228 # include <time.h> | |
229 # endif | |
230 # endif | |
231 #endif | |
232 | |
233 #ifdef HAVE_FCNTL_H | |
234 # include <fcntl.h> | |
235 #else | |
236 # ifdef HAVE_SYS_FILE_H | |
237 # include <sys/file.h> | |
238 # endif | |
239 #endif | |
240 | |
241 #ifdef HAVE_LOCALE_H | |
242 # include <locale.h> | |
243 #endif | |
244 | |
245 #ifdef HAVE_LANGINFO_CODESET | |
246 # include <langinfo.h> | |
247 #endif | |
248 | |
249 #ifndef HAVE_SETLOCALE | |
250 # define setlocale(category, locale) (locale) | |
251 #endif | |
252 | |
253 #ifdef ENABLE_NLS | |
254 #include <libintl.h> | |
255 #else | |
256 /* Stubs. */ | |
257 # undef dgettext | |
258 # define dgettext(package, msgid) (msgid) | |
259 #endif | |
260 | |
261 #ifndef _ | |
262 # define _(msgid) dgettext (PACKAGE, msgid) | |
263 #endif | |
264 | |
265 #ifndef N_ | |
266 # define N_(msgid) msgid | |
267 #endif | |
268 | |
269 /* Some systems define these in, e.g., param.h. We undefine these names | |
270 here to avoid the warnings. We prefer to use our definitions since we | |
271 know they are correct. */ | |
272 | |
273 #undef MIN | |
274 #undef MAX | |
275 #define MIN(X,Y) ((X) < (Y) ? (X) : (Y)) | |
276 #define MAX(X,Y) ((X) > (Y) ? (X) : (Y)) | |
277 | |
278 /* The HAVE_DECL_* macros are three-state, undefined, 0 or 1. If they | |
279 are defined to 0 then we must provide the relevant declaration | |
280 here. These checks will be in the undefined state while configure | |
281 is running so be careful to test "defined (HAVE_DECL_*)". */ | |
282 | |
283 #if defined (HAVE_DECL_ABORT) && !HAVE_DECL_ABORT | |
284 extern void abort (void); | |
285 #endif | |
286 | |
287 #if HAVE_SYS_STAT_H | |
288 # include <sys/stat.h> | |
289 #endif | |
290 | |
291 /* Test if something is a normal file. */ | |
292 #ifndef S_ISREG | |
293 #define S_ISREG(m) (((m) & S_IFMT) == S_IFREG) | |
294 #endif | |
295 | |
296 /* Test if something is a directory. */ | |
297 #ifndef S_ISDIR | |
298 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR) | |
299 #endif | |
300 | |
301 /* Test if something is a character special file. */ | |
302 #ifndef S_ISCHR | |
303 #define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR) | |
304 #endif | |
305 | |
306 /* Test if something is a block special file. */ | |
307 #ifndef S_ISBLK | |
308 #define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK) | |
309 #endif | |
310 | |
311 /* Test if something is a socket. */ | |
312 #ifndef S_ISSOCK | |
313 # ifdef S_IFSOCK | |
314 # define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK) | |
315 # else | |
316 # define S_ISSOCK(m) 0 | |
317 # endif | |
318 #endif | |
319 | |
320 /* Test if something is a FIFO. */ | |
321 #ifndef S_ISFIFO | |
322 # ifdef S_IFIFO | |
323 # define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO) | |
324 # else | |
325 # define S_ISFIFO(m) 0 | |
326 # endif | |
327 #endif | |
328 | |
329 /* Approximate O_NOCTTY and O_BINARY. */ | |
330 #ifndef O_NOCTTY | |
331 #define O_NOCTTY 0 | |
332 #endif | |
333 #ifndef O_BINARY | |
334 # define O_BINARY 0 | |
335 #endif | |
336 | |
337 /* Filename handling macros. */ | |
338 #include "filenames.h" | |
339 | |
340 /* Get libiberty declarations. */ | |
341 #include "libiberty.h" | |
342 #include "safe-ctype.h" | |
343 | |
344 /* 1 if we have C99 designated initializers. | |
345 | |
346 ??? C99 designated initializers are not supported by most C++ | |
347 compilers, including G++. -- gdr, 2005-05-18 */ | |
348 #if !defined(HAVE_DESIGNATED_INITIALIZERS) | |
349 #define HAVE_DESIGNATED_INITIALIZERS \ | |
350 ((!defined(__cplusplus) && (GCC_VERSION >= 2007)) \ | |
351 || (__STDC_VERSION__ >= 199901L)) | |
352 #endif | |
353 | |
354 /* Be conservative and only use enum bitfields with GCC. | |
355 FIXME: provide a complete autoconf test for buggy enum bitfields. */ | |
356 | |
357 #if (GCC_VERSION > 2000) | |
358 #define ENUM_BITFIELD(TYPE) __extension__ enum TYPE | |
359 #else | |
360 #define ENUM_BITFIELD(TYPE) unsigned int | |
361 #endif | |
362 | |
363 #ifndef offsetof | |
364 #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *) 0)->MEMBER) | |
365 #endif | |
366 | |
367 /* __builtin_expect(A, B) evaluates to A, but notifies the compiler that | |
368 the most likely value of A is B. This feature was added at some point | |
369 between 2.95 and 3.0. Let's use 3.0 as the lower bound for now. */ | |
370 #if (GCC_VERSION < 3000) | |
371 #define __builtin_expect(a, b) (a) | |
372 #endif | |
373 | |
374 /* Provide a fake boolean type. We make no attempt to use the | |
375 C99 _Bool, as it may not be available in the bootstrap compiler, | |
376 and even if it is, it is liable to be buggy. | |
377 This must be after all inclusion of system headers, as some of | |
378 them will mess us up. */ | |
379 #undef bool | |
380 #undef true | |
381 #undef false | |
382 #undef TRUE | |
383 #undef FALSE | |
384 | |
385 #ifndef __cplusplus | |
386 #define bool unsigned char | |
387 #endif | |
388 #define true 1 | |
389 #define false 0 | |
390 | |
391 /* Some compilers do not allow the use of unsigned char in bitfields. */ | |
392 #define BOOL_BITFIELD unsigned int | |
393 | |
394 /* Poison identifiers we do not want to use. */ | |
395 #if (GCC_VERSION >= 3000) | |
396 #undef calloc | |
397 #undef strdup | |
398 #undef malloc | |
399 #undef realloc | |
400 #pragma GCC poison calloc strdup | |
401 #pragma GCC poison malloc realloc | |
402 | |
403 /* Libiberty macros that are no longer used in GCC. */ | |
404 #undef ANSI_PROTOTYPES | |
405 #undef PTR_CONST | |
406 #undef LONG_DOUBLE | |
407 #undef VPARAMS | |
408 #undef VA_OPEN | |
409 #undef VA_FIXEDARG | |
410 #undef VA_CLOSE | |
411 #undef VA_START | |
412 #pragma GCC poison ANSI_PROTOTYPES PTR_CONST LONG_DOUBLE VPARAMS VA_OPEN \ | |
413 VA_FIXEDARG VA_CLOSE VA_START | |
414 | |
415 /* Note: not all uses of the `index' token (e.g. variable names and | |
416 structure members) have been eliminated. */ | |
417 #undef bcopy | |
418 #undef bzero | |
419 #undef bcmp | |
420 #undef rindex | |
421 #pragma GCC poison bcopy bzero bcmp rindex | |
422 | |
423 #endif /* GCC >= 3.0 */ | |
424 #endif /* ! LIBCPP_SYSTEM_H */ |