1 /* system.h - Get common system includes and various definitions and
2 declarations based on autoconf macros.
3 Copyright (C) 1998, 1999 Free Software Foundation, Inc.
5 This file is part of GNU CC.
7 GNU CC is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GNU CC is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU CC; see the file COPYING. If not, write to
19 the Free Software Foundation, 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
22 #ifndef __GCC_SYSTEM_H__
23 #define __GCC_SYSTEM_H__
25 /* We must include stdarg.h/varargs.h before stdio.h. */
26 #ifdef ANSI_PROTOTYPES
34 /* Define a generic NULL if one hasn't already been defined. */
39 /* The compiler is not a multi-threaded application and therefore we
40 do not have to use the locking functions. */
41 #ifdef HAVE_PUTC_UNLOCKED
43 # define putc(C, Stream) putc_unlocked (C, Stream)
45 #ifdef HAVE_FPUTC_UNLOCKED
47 # define fputc(C, Stream) fputc_unlocked (C, Stream)
49 #ifdef HAVE_FPUTS_UNLOCKED
51 # define fputs(String, Stream) fputs_unlocked (String, Stream)
56 /* Jim Meyering writes:
58 "... Some ctype macros are valid only for character codes that
59 isascii says are ASCII (SGI's IRIX-4.0.5 is one such system --when
60 using /bin/cc or gcc but without giving an ansi option). So, all
61 ctype uses should be through macros like ISPRINT... If
62 STDC_HEADERS is defined, then autoconf has verified that the ctype
63 macros don't need to be guarded with references to isascii. ...
64 Defining isascii to 1 should let any compiler worth its salt
65 eliminate the && through constant folding."
69 "... Furthermore, isupper(c) etc. have an undefined result if c is
70 outside the range -1 <= c <= 255. One is tempted to write isupper(c)
71 with c being of type `char', but this is wrong if c is an 8-bit
72 character >= 128 which gets sign-extended to a negative value.
73 The macro ISUPPER protects against this as well." */
75 #if defined (STDC_HEADERS) || (!defined (isascii) && !defined (HAVE_ISASCII))
76 # define IN_CTYPE_DOMAIN(c) 1
78 # define IN_CTYPE_DOMAIN(c) isascii(c)
82 # define ISBLANK(c) (IN_CTYPE_DOMAIN (c) && isblank (c))
84 # define ISBLANK(c) ((c) == ' ' || (c) == '\t')
87 # define ISGRAPH(c) (IN_CTYPE_DOMAIN (c) && isgraph (c))
89 # define ISGRAPH(c) (IN_CTYPE_DOMAIN (c) && isprint (c) && !isspace (c))
92 #define ISPRINT(c) (IN_CTYPE_DOMAIN (c) && isprint (c))
93 #define ISALNUM(c) (IN_CTYPE_DOMAIN (c) && isalnum (c))
94 #define ISALPHA(c) (IN_CTYPE_DOMAIN (c) && isalpha (c))
95 #define ISCNTRL(c) (IN_CTYPE_DOMAIN (c) && iscntrl (c))
96 #define ISLOWER(c) (IN_CTYPE_DOMAIN (c) && islower (c))
97 #define ISPUNCT(c) (IN_CTYPE_DOMAIN (c) && ispunct (c))
98 #define ISSPACE(c) (IN_CTYPE_DOMAIN (c) && isspace (c))
99 #define ISUPPER(c) (IN_CTYPE_DOMAIN (c) && isupper (c))
100 #define ISXDIGIT(c) (IN_CTYPE_DOMAIN (c) && isxdigit (c))
101 #define ISDIGIT_LOCALE(c) (IN_CTYPE_DOMAIN (c) && isdigit (c))
103 /* ISDIGIT differs from ISDIGIT_LOCALE, as follows:
104 - Its arg may be any int or unsigned int; it need not be an unsigned char.
105 - It's guaranteed to evaluate its argument exactly once.
106 - It's typically faster.
107 Posix 1003.2-1992 section 2.5.2.1 page 50 lines 1556-1558 says that
108 only '0' through '9' are digits. Prefer ISDIGIT to ISDIGIT_LOCALE unless
109 it's important to use the locale's definition of `digit' even when the
110 host does not conform to Posix. */
111 #define ISDIGIT(c) ((unsigned) (c) - '0' <= 9)
114 #include <sys/types.h>
121 #ifdef STRING_WITH_STRINGS
123 # include <strings.h>
125 # ifdef HAVE_STRING_H
128 # ifdef HAVE_STRINGS_H
129 # include <strings.h>
142 #ifdef HAVE_SYS_PARAM_H
143 # include <sys/param.h>
150 #ifdef TIME_WITH_SYS_TIME
151 # include <sys/time.h>
155 # include <sys/time.h>
166 # ifdef HAVE_SYS_FILE_H
167 # include <sys/file.h>
189 /* Some systems define these in, e.g., param.h. We undefine these names
190 here to avoid the warnings. We prefer to use our definitions since we
191 know they are correct. */
195 #define MIN(X,Y) ((X) < (Y) ? (X) : (Y))
196 #define MAX(X,Y) ((X) > (Y) ? (X) : (Y))
198 #ifdef HAVE_SYS_WAIT_H
199 #include <sys/wait.h>
203 #define WIFSIGNALED(S) (((S) & 0xff) != 0 && ((S) & 0xff) != 0x7f)
206 #define WTERMSIG(S) ((S) & 0x7f)
209 #define WIFEXITED(S) (((S) & 0xff) == 0)
212 #define WEXITSTATUS(S) (((S) & 0xff00) >> 8)
219 # ifdef NEED_DECLARATION_BCOPY
220 extern void bcopy ();
222 # else /* ! HAVE_BCOPY */
223 # define bcopy(src,dst,len) memmove((dst),(src),(len))
229 # ifdef NEED_DECLARATION_BCMP
232 # else /* ! HAVE_BCMP */
233 # define bcmp(left,right,len) memcmp ((left),(right),(len))
239 # ifdef NEED_DECLARATION_BZERO
240 extern void bzero ();
242 # else /* ! HAVE_BZERO */
243 # define bzero(dst,len) memset ((dst),0,(len))
249 # ifdef NEED_DECLARATION_INDEX
250 extern char *index ();
252 # else /* ! HAVE_INDEX */
253 # define index strchr
259 # ifdef NEED_DECLARATION_RINDEX
260 extern char *rindex ();
262 # else /* ! HAVE_RINDEX */
263 # define rindex strrchr
267 #ifdef NEED_DECLARATION_ATOF
268 extern double atof ();
271 #ifdef NEED_DECLARATION_ATOL
275 #ifdef NEED_DECLARATION_FREE
279 #ifdef NEED_DECLARATION_GETCWD
280 extern char *getcwd ();
283 #ifdef NEED_DECLARATION_GETENV
284 extern char *getenv ();
287 #ifdef NEED_DECLARATION_GETWD
288 extern char *getwd ();
291 #ifdef NEED_DECLARATION_SBRK
292 extern char *sbrk ();
296 # ifdef NEED_DECLARATION_STRERROR
298 extern char *strerror ();
301 #else /* ! HAVE_STRERROR */
303 extern char *sys_errlist[];
304 #endif /* HAVE_STRERROR */
306 #ifdef HAVE_STRSIGNAL
307 # ifdef NEED_DECLARATION_STRSIGNAL
309 extern char * strsignal ();
312 #else /* ! HAVE_STRSIGNAL */
313 # ifndef SYS_SIGLIST_DECLARED
314 # ifndef NO_SYS_SIGLIST
315 extern char * sys_siglist[];
318 #endif /* HAVE_STRSIGNAL */
320 #ifdef HAVE_GETRLIMIT
321 # ifdef NEED_DECLARATION_GETRLIMIT
323 extern int getrlimit ();
328 #ifdef HAVE_SETRLIMIT
329 # ifdef NEED_DECLARATION_SETRLIMIT
331 extern int setrlimit ();
336 /* HAVE_VOLATILE only refers to the stage1 compiler. We also check
337 __STDC__ and assume gcc sets it and has volatile in stage >=2. */
338 #if !defined(HAVE_VOLATILE) && !defined(__STDC__) && !defined(volatile)
342 /* Redefine abort to report an internal error w/o coredump, and reporting the
343 location of the error in the source file. */
347 #ifndef USE_SYSTEM_ABORT
348 #define USE_SYSTEM_ABORT
349 #endif /* !USE_SYSTEM_ABORT */
350 #endif /* !__GNUC__ */
351 #endif /* !__STDC__ */
353 #ifdef USE_SYSTEM_ABORT
354 # ifdef NEED_DECLARATION_ABORT
355 extern void abort ();
358 #if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
361 "%s:%d: Internal compiler error\n", __FILE__, __LINE__), \
362 exit (FATAL_EXIT_CODE))
367 "%s:%d: Internal compiler error in function %s\n" \
368 "Please submit a full bug report to `egcs-bugs@cygnus.com'.\n" \
369 "See <URL:http://egcs.cygnus.com/faq.html#bugreport> for details.\n", \
370 __FILE__, __LINE__, __PRETTY_FUNCTION__), \
371 exit (FATAL_EXIT_CODE))
373 #endif /* recent gcc */
374 #endif /* USE_SYSTEM_ABORT */
378 /* Define a STRINGIFY macro that's right for ANSI or traditional C.
379 HAVE_CPP_STRINGIFY only refers to the stage1 compiler. Assume that
380 (non-traditional) gcc used in stage2 or later has this feature.
382 Note: if the argument passed to STRINGIFY is itself a macro, eg
383 #define foo bar, STRINGIFY(foo) will produce "foo", not "bar".
384 Although the __STDC__ case could be made to expand this via a layer
385 of indirection, the traditional C case can not do so. Therefore
386 this behavior is not supported. */
388 # if defined(HAVE_CPP_STRINGIFY) || (defined(__GNUC__) && defined(__STDC__))
389 # define STRINGIFY(STRING) #STRING
391 # define STRINGIFY(STRING) "STRING"
393 #endif /* ! STRINGIFY */
396 /* These macros are here in preparation for the use of gettext in egcs. */
397 #define _(String) String
398 #define N_(String) String
401 # include <sys/stat.h>
404 /* Test if something is a normal file. */
406 #define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
409 /* Test if something is a directory. */
411 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
414 /* Get libiberty declarations. */
415 #include "libiberty.h"
417 #endif /* __GCC_SYSTEM_H__ */