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073609a4 1/* system.h - Get common system includes and various definitions and
2 declarations based on autoconf macros.
4a5355db 3 Copyright (C) 1998, 1999 Free Software Foundation, Inc.
073609a4 4
41e3445a 5This file is part of GNU CC.
6
7GNU CC is free software; you can redistribute it and/or modify
8it under the terms of the GNU General Public License as published by
9the Free Software Foundation; either version 2, or (at your option)
10any later version.
11
12GNU CC is distributed in the hope that it will be useful,
13but WITHOUT ANY WARRANTY; without even the implied warranty of
14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15GNU General Public License for more details.
16
17You should have received a copy of the GNU General Public License
18along with GNU CC; see the file COPYING. If not, write to
19the Free Software Foundation, 59 Temple Place - Suite 330,
20Boston, MA 02111-1307, USA. */
073609a4 21
22#ifndef __GCC_SYSTEM_H__
23#define __GCC_SYSTEM_H__
24
32e0908a 25/* We must include stdarg.h/varargs.h before stdio.h. */
7bca031c 26#ifdef ANSI_PROTOTYPES
32e0908a 27#include <stdarg.h>
28#else
29#include <varargs.h>
30#endif
31
073609a4 32#include <stdio.h>
2e9695c1 33
34/* Define a generic NULL if one hasn't already been defined. */
35#ifndef NULL
36#define NULL 0
37#endif
38
1bcf5ab8 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
42# undef putc
43# define putc(C, Stream) putc_unlocked (C, Stream)
44#endif
45#ifdef HAVE_FPUTC_UNLOCKED
46# undef fputc
47# define fputc(C, Stream) fputc_unlocked (C, Stream)
48#endif
49#ifdef HAVE_FPUTS_UNLOCKED
50# undef fputs
51# define fputs(String, Stream) fputs_unlocked (String, Stream)
52#endif
53
073609a4 54#include <ctype.h>
55
56/* Jim Meyering writes:
89f7f2db 57
073609a4 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."
89f7f2db 66
073609a4 67 Bruno Haible adds:
89f7f2db 68
073609a4 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." */
89f7f2db 74
073609a4 75#if defined (STDC_HEADERS) || (!defined (isascii) && !defined (HAVE_ISASCII))
76# define IN_CTYPE_DOMAIN(c) 1
77#else
78# define IN_CTYPE_DOMAIN(c) isascii(c)
79#endif
89f7f2db 80
073609a4 81#ifdef isblank
82# define ISBLANK(c) (IN_CTYPE_DOMAIN (c) && isblank (c))
83#else
84# define ISBLANK(c) ((c) == ' ' || (c) == '\t')
85#endif
86#ifdef isgraph
87# define ISGRAPH(c) (IN_CTYPE_DOMAIN (c) && isgraph (c))
88#else
89# define ISGRAPH(c) (IN_CTYPE_DOMAIN (c) && isprint (c) && !isspace (c))
90#endif
89f7f2db 91
073609a4 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))
89f7f2db 102
073609a4 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)
112
113
114#include <sys/types.h>
073609a4 115#include <errno.h>
116
117#ifndef errno
118extern int errno;
119#endif
120
259a120e 121#ifdef STRING_WITH_STRINGS
073609a4 122# include <string.h>
259a120e 123# include <strings.h>
073609a4 124#else
259a120e 125# ifdef HAVE_STRING_H
126# include <string.h>
127# else
128# ifdef HAVE_STRINGS_H
129# include <strings.h>
130# endif
073609a4 131# endif
132#endif
133
134#ifdef HAVE_STDLIB_H
135# include <stdlib.h>
136#endif
137
138#ifdef HAVE_UNISTD_H
139# include <unistd.h>
140#endif
141
142#ifdef HAVE_SYS_PARAM_H
143# include <sys/param.h>
144#endif
145
146#if HAVE_LIMITS_H
147# include <limits.h>
148#endif
149
150#ifdef TIME_WITH_SYS_TIME
151# include <sys/time.h>
152# include <time.h>
153#else
154# if HAVE_SYS_TIME_H
f11c33a2 155# include <sys/time.h>
073609a4 156# else
f11c33a2 157# ifdef HAVE_TIME_H
158# include <time.h>
159# endif
160# endif
073609a4 161#endif
162
163#ifdef HAVE_FCNTL_H
164# include <fcntl.h>
165#else
f11c33a2 166# ifdef HAVE_SYS_FILE_H
167# include <sys/file.h>
168# endif
073609a4 169#endif
170
171#ifndef SEEK_SET
172# define SEEK_SET 0
173# define SEEK_CUR 1
174# define SEEK_END 2
175#endif
176#ifndef F_OK
177# define F_OK 0
178# define X_OK 1
179# define W_OK 2
180# define R_OK 4
181#endif
f11c33a2 182#ifndef O_RDONLY
183# define O_RDONLY 0
184#endif
185#ifndef O_WRONLY
186# define O_WRONLY 1
187#endif
073609a4 188
65cee259 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. */
192
193#undef MIN
194#undef MAX
195#define MIN(X,Y) ((X) < (Y) ? (X) : (Y))
196#define MAX(X,Y) ((X) > (Y) ? (X) : (Y))
197
5a3ee0b1 198#ifdef HAVE_SYS_WAIT_H
199#include <sys/wait.h>
200#endif
201
202#ifndef WIFSIGNALED
203#define WIFSIGNALED(S) (((S) & 0xff) != 0 && ((S) & 0xff) != 0x7f)
204#endif
205#ifndef WTERMSIG
206#define WTERMSIG(S) ((S) & 0x7f)
207#endif
208#ifndef WIFEXITED
209#define WIFEXITED(S) (((S) & 0xff) == 0)
210#endif
211#ifndef WEXITSTATUS
212#define WEXITSTATUS(S) (((S) & 0xff00) >> 8)
213#endif
214
073609a4 215
216
217#ifndef bcopy
218# ifdef HAVE_BCOPY
219# ifdef NEED_DECLARATION_BCOPY
fe879f7c 220extern void bcopy ();
073609a4 221# endif
222# else /* ! HAVE_BCOPY */
2f519eef 223# define bcopy(src,dst,len) memmove((dst),(src),(len))
073609a4 224# endif
225#endif
226
227#ifndef bcmp
228# ifdef HAVE_BCMP
229# ifdef NEED_DECLARATION_BCMP
fe879f7c 230extern int bcmp ();
073609a4 231# endif
232# else /* ! HAVE_BCMP */
233# define bcmp(left,right,len) memcmp ((left),(right),(len))
234# endif
235#endif
236
237#ifndef bzero
238# ifdef HAVE_BZERO
239# ifdef NEED_DECLARATION_BZERO
fe879f7c 240extern void bzero ();
073609a4 241# endif
242# else /* ! HAVE_BZERO */
243# define bzero(dst,len) memset ((dst),0,(len))
244# endif
245#endif
246
247#ifndef index
248# ifdef HAVE_INDEX
249# ifdef NEED_DECLARATION_INDEX
250extern char *index ();
251# endif
252# else /* ! HAVE_INDEX */
253# define index strchr
254# endif
255#endif
256
257#ifndef rindex
258# ifdef HAVE_RINDEX
259# ifdef NEED_DECLARATION_RINDEX
260extern char *rindex ();
261# endif
262# else /* ! HAVE_RINDEX */
263# define rindex strrchr
264# endif
265#endif
266
b3819e2e 267#ifdef NEED_DECLARATION_ATOF
268extern double atof ();
269#endif
270
271#ifdef NEED_DECLARATION_ATOL
272extern long atol();
273#endif
274
073609a4 275#ifdef NEED_DECLARATION_FREE
276extern void free ();
277#endif
278
ccb1060c 279#ifdef NEED_DECLARATION_GETCWD
280extern char *getcwd ();
281#endif
282
fe879f7c 283#ifdef NEED_DECLARATION_GETENV
284extern char *getenv ();
285#endif
286
ccb1060c 287#ifdef NEED_DECLARATION_GETWD
288extern char *getwd ();
289#endif
290
b3819e2e 291#ifdef NEED_DECLARATION_SBRK
292extern char *sbrk ();
293#endif
294
ccb1060c 295#ifdef HAVE_STRERROR
296# ifdef NEED_DECLARATION_STRERROR
297# ifndef strerror
298extern char *strerror ();
299# endif
300# endif
301#else /* ! HAVE_STRERROR */
302extern int sys_nerr;
303extern char *sys_errlist[];
304#endif /* HAVE_STRERROR */
305
0b6ff5fb 306#ifdef HAVE_STRSIGNAL
307# ifdef NEED_DECLARATION_STRSIGNAL
308# ifndef strsignal
309extern char * strsignal ();
310# endif
311# endif
312#else /* ! HAVE_STRSIGNAL */
313# ifndef SYS_SIGLIST_DECLARED
314# ifndef NO_SYS_SIGLIST
315extern char * sys_siglist[];
316# endif
317# endif
318#endif /* HAVE_STRSIGNAL */
319
436f5383 320#ifdef HAVE_GETRLIMIT
321# ifdef NEED_DECLARATION_GETRLIMIT
322# ifndef getrlimit
323extern int getrlimit ();
324# endif
325# endif
326#endif
327
328#ifdef HAVE_SETRLIMIT
329# ifdef NEED_DECLARATION_SETRLIMIT
330# ifndef setrlimit
331extern int setrlimit ();
332# endif
333# endif
334#endif
335
8564ad21 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)
339#define volatile
340#endif
341
97fce000 342/* Redefine abort to report an internal error w/o coredump, and reporting the
343 location of the error in the source file. */
344#ifndef abort
345#ifndef __STDC__
346#ifndef __GNUC__
347#ifndef USE_SYSTEM_ABORT
348#define USE_SYSTEM_ABORT
349#endif /* !USE_SYSTEM_ABORT */
350#endif /* !__GNUC__ */
351#endif /* !__STDC__ */
352
b3819e2e 353#ifdef USE_SYSTEM_ABORT
354# ifdef NEED_DECLARATION_ABORT
ccb1060c 355extern void abort ();
b3819e2e 356# endif
357#else
97fce000 358#if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
359#define abort() \
360(fprintf (stderr, \
361 "%s:%d: Internal compiler error\n", __FILE__, __LINE__), \
362 exit (FATAL_EXIT_CODE))
363
364#else
365#define abort() \
366(fprintf (stderr, \
4a5355db 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", \
97fce000 370 __FILE__, __LINE__, __PRETTY_FUNCTION__), \
371 exit (FATAL_EXIT_CODE))
372
373#endif /* recent gcc */
b3819e2e 374#endif /* USE_SYSTEM_ABORT */
97fce000 375#endif /* !abort */
376
42aaf0b7 377
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.
381
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. */
387#ifndef STRINGIFY
388# if defined(HAVE_CPP_STRINGIFY) || (defined(__GNUC__) && defined(__STDC__))
389# define STRINGIFY(STRING) #STRING
390# else
391# define STRINGIFY(STRING) "STRING"
392# endif
393#endif /* ! STRINGIFY */
394
89f7f2db 395
396/* These macros are here in preparation for the use of gettext in egcs. */
397#define _(String) String
398#define N_(String) String
399
8be93a1c 400#if HAVE_SYS_STAT_H
401# include <sys/stat.h>
402#endif
d128acff 403
404/* Test if something is a normal file. */
405#ifndef S_ISREG
406#define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
407#endif
408
409/* Test if something is a directory. */
410#ifndef S_ISDIR
411#define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
412#endif
413
ac7eca71 414/* Get libiberty declarations. */
415#include "libiberty.h"
416
be2828ce 417#if defined (ANSI_PROTOTYPES)
418# define PRINTF_PROTO(ARGS, m, n) PVPROTO (ARGS) ATTRIBUTE_PRINTF(m, n)
419#else
420# define PRINTF_PROTO(ARGS, m, n) () ATTRIBUTE_PRINTF(m, n)
421#endif
422#define PRINTF_PROTO_1(ARGS) PRINTF_PROTO(ARGS, 1, 2)
423#define PRINTF_PROTO_2(ARGS) PRINTF_PROTO(ARGS, 2, 3)
424#define PRINTF_PROTO_3(ARGS) PRINTF_PROTO(ARGS, 3, 4)
425#define PRINTF_PROTO_4(ARGS) PRINTF_PROTO(ARGS, 4, 5)
426
427
073609a4 428#endif /* __GCC_SYSTEM_H__ */