1 /* Get common system includes and various definitions and declarations based
3 Copyright (C) 1998, 1999, 2000 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. */
23 #ifndef __GCC_SYSTEM_H__
24 #define __GCC_SYSTEM_H__
26 /* This is the location of the online document giving information how
27 to report bugs. If you change this string, also check for strings
28 not under control of the preprocessor. */
29 #define GCCBUGURL "<URL:http://www.gnu.org/software/gcc/bugs.html>"
31 /* We must include stdarg.h/varargs.h before stdio.h. */
32 #ifdef ANSI_PROTOTYPES
40 # define va_copy(d,s) __va_copy((d),(s))
42 # define va_copy(d,s) ((d) = (s))
48 /* Define a generic NULL if one hasn't already been defined. */
54 #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
57 /* The compiler is not a multi-threaded application and therefore we
58 do not have to use the locking functions.
60 NEED_DECLARATION_PUTC_UNLOCKED actually indicates whether or not
61 the IO code is multi-thread safe by default. If it is not declared,
62 then do not worry about using the _unlocked functions.
64 fputs_unlocked is an extension and needs to be prototyped specially. */
66 #if defined HAVE_PUTC_UNLOCKED && !defined NEED_DECLARATION_PUTC_UNLOCKED
68 # define putc(C, Stream) putc_unlocked (C, Stream)
70 #if defined HAVE_FPUTC_UNLOCKED && !defined NEED_DECLARATION_PUTC_UNLOCKED
72 # define fputc(C, Stream) fputc_unlocked (C, Stream)
74 #if defined HAVE_FPUTS_UNLOCKED && !defined NEED_DECLARATION_PUTC_UNLOCKED
76 # define fputs(String, Stream) fputs_unlocked (String, Stream)
77 # ifdef NEED_DECLARATION_FPUTS_UNLOCKED
78 extern int fputs_unlocked PARAMS ((const char *, FILE *));
84 /* Jim Meyering writes:
86 "... Some ctype macros are valid only for character codes that
87 isascii says are ASCII (SGI's IRIX-4.0.5 is one such system --when
88 using /bin/cc or gcc but without giving an ansi option). So, all
89 ctype uses should be through macros like ISPRINT... If
90 STDC_HEADERS is defined, then autoconf has verified that the ctype
91 macros don't need to be guarded with references to isascii. ...
92 Defining isascii to 1 should let any compiler worth its salt
93 eliminate the && through constant folding."
97 "... Furthermore, isupper(c) etc. have an undefined result if c is
98 outside the range -1 <= c <= 255. One is tempted to write isupper(c)
99 with c being of type `char', but this is wrong if c is an 8-bit
100 character >= 128 which gets sign-extended to a negative value.
101 The macro ISUPPER protects against this as well." */
103 #if defined (STDC_HEADERS) || (!defined (isascii) && !defined (HAVE_ISASCII)) || defined(HOST_EBCDIC)
104 # define IN_CTYPE_DOMAIN(c) 1
106 # define IN_CTYPE_DOMAIN(c) isascii(c)
109 /* The ctype functions are often implemented as macros which do
110 lookups in arrays using the parameter as the offset. If the ctype
111 function parameter is a char, then gcc will (appropriately) warn
112 that a "subscript has type char". Using a (signed) char as a subscript
113 is bad because you may get negative offsets and thus it is not 8-bit
114 safe. The CTYPE_CONV macro ensures that the parameter is cast to an
115 unsigned char when a char is passed in. When an int is passed in, the
116 parameter is left alone so we don't lose EOF.
119 #define CTYPE_CONV(CH) \
120 (sizeof(CH) == sizeof(unsigned char) ? (int)(unsigned char)(CH) : (int)(CH))
123 /* WARNING! The argument to the ctype replacement macros below is
124 evaluated more than once so it must not have side effects! */
127 # define ISBLANK(c) (IN_CTYPE_DOMAIN (c) && isblank (CTYPE_CONV(c)))
129 # define ISBLANK(c) ((c) == ' ' || (c) == '\t')
132 # define ISGRAPH(c) (IN_CTYPE_DOMAIN (c) && isgraph (CTYPE_CONV(c)))
134 # define ISGRAPH(c) (IN_CTYPE_DOMAIN (c) && isprint (CTYPE_CONV(c)) && !isspace (CTYPE_CONV(c)))
137 #define ISPRINT(c) (IN_CTYPE_DOMAIN (c) && isprint (CTYPE_CONV(c)))
138 #define ISALNUM(c) (IN_CTYPE_DOMAIN (c) && isalnum (CTYPE_CONV(c)))
139 #define ISALPHA(c) (IN_CTYPE_DOMAIN (c) && isalpha (CTYPE_CONV(c)))
140 #define ISCNTRL(c) (IN_CTYPE_DOMAIN (c) && iscntrl (CTYPE_CONV(c)))
141 #define ISLOWER(c) (IN_CTYPE_DOMAIN (c) && islower (CTYPE_CONV(c)))
142 #define ISPUNCT(c) (IN_CTYPE_DOMAIN (c) && ispunct (CTYPE_CONV(c)))
143 #define ISSPACE(c) (IN_CTYPE_DOMAIN (c) && isspace (CTYPE_CONV(c)))
144 #define ISUPPER(c) (IN_CTYPE_DOMAIN (c) && isupper (CTYPE_CONV(c)))
145 #define ISXDIGIT(c) (IN_CTYPE_DOMAIN (c) && isxdigit (CTYPE_CONV(c)))
146 #define ISDIGIT_LOCALE(c) (IN_CTYPE_DOMAIN (c) && isdigit (CTYPE_CONV(c)))
149 # define TOLOWER(c) (tolower (CTYPE_CONV(c)))
150 # define TOUPPER(c) (toupper (CTYPE_CONV(c)))
152 # define TOLOWER(c) (ISUPPER (c) ? tolower (CTYPE_CONV(c)) : (c))
153 # define TOUPPER(c) (ISLOWER (c) ? toupper (CTYPE_CONV(c)) : (c))
156 /* ISDIGIT differs from ISDIGIT_LOCALE, as follows:
157 - Its arg may be any int or unsigned int; it need not be an unsigned char.
158 - It's guaranteed to evaluate its argument exactly once.
159 - It's typically faster.
160 Posix 1003.2-1992 section 2.5.2.1 page 50 lines 1556-1558 says that
161 only '0' through '9' are digits. Prefer ISDIGIT to ISDIGIT_LOCALE unless
162 it's important to use the locale's definition of `digit' even when the
163 host does not conform to Posix. */
164 #define ISDIGIT(c) ((unsigned) (c) - '0' <= 9)
166 /* Define a default escape character; its different for EBCDIC. */
168 #define TARGET_ESC 033
171 #include <sys/types.h>
179 #ifdef STRING_WITH_STRINGS
181 # include <strings.h>
183 # ifdef HAVE_STRING_H
186 # ifdef HAVE_STRINGS_H
187 # include <strings.h>
195 /* Note that systems that use glibc have a <stdlib.h> that includes
196 <alloca.h> that defines alloca, so let USE_C_ALLOCA override this. */
205 #ifdef HAVE_SYS_PARAM_H
206 # include <sys/param.h>
213 /* Find HOST_WIDEST_INT and set its bit size, type and print macros.
214 It will be the largest integer mode supported by the host which may
215 (or may not) be larger than HOST_WIDE_INT. This must appear after
216 <limits.h> since we only use `long long' if its bigger than a
217 `long' and also if it is supported by macros in limits.h. For old
218 hosts which don't have a limits.h (and thus won't include it in
219 stage2 cause we don't rerun configure) we assume gcc supports long
220 long.) Note, you won't get these defined if you don't include
221 {ht}config.h before this file to set the HOST_BITS_PER_* macros. */
223 #ifndef HOST_WIDEST_INT
224 # if defined (HOST_BITS_PER_LONG) && defined (HOST_BITS_PER_LONGLONG)
225 # if (HOST_BITS_PER_LONGLONG > HOST_BITS_PER_LONG) && (defined (LONG_LONG_MAX) || defined (LONGLONG_MAX) || defined (LLONG_MAX) || defined (__GNUC__))
226 # define HOST_BITS_PER_WIDEST_INT HOST_BITS_PER_LONGLONG
227 # define HOST_WIDEST_INT long long
228 # define HOST_WIDEST_INT_PRINT_DEC "%lld"
229 # define HOST_WIDEST_INT_PRINT_UNSIGNED "%llu"
230 # define HOST_WIDEST_INT_PRINT_HEX "0x%llx"
232 # define HOST_BITS_PER_WIDEST_INT HOST_BITS_PER_LONG
233 # define HOST_WIDEST_INT long
234 # define HOST_WIDEST_INT_PRINT_DEC "%ld"
235 # define HOST_WIDEST_INT_PRINT_UNSIGNED "%lu"
236 # define HOST_WIDEST_INT_PRINT_HEX "0x%lx"
237 # endif /*(long long>long) && (LONG_LONG_MAX||LONGLONG_MAX||LLONG_MAX||GNUC)*/
238 # endif /* defined(HOST_BITS_PER_LONG) && defined(HOST_BITS_PER_LONGLONG) */
239 #endif /* ! HOST_WIDEST_INT */
241 #ifdef TIME_WITH_SYS_TIME
242 # include <sys/time.h>
246 # include <sys/time.h>
257 # ifdef HAVE_SYS_FILE_H
258 # include <sys/file.h>
280 /* Some systems define these in, e.g., param.h. We undefine these names
281 here to avoid the warnings. We prefer to use our definitions since we
282 know they are correct. */
286 #define MIN(X,Y) ((X) < (Y) ? (X) : (Y))
287 #define MAX(X,Y) ((X) > (Y) ? (X) : (Y))
289 /* Returns the least number N such that N * Y >= X. */
290 #define CEIL(x,y) (((x) + (y) - 1) / (y))
292 #ifdef HAVE_SYS_WAIT_H
293 #include <sys/wait.h>
297 #define WIFSIGNALED(S) (((S) & 0xff) != 0 && ((S) & 0xff) != 0x7f)
300 #define WTERMSIG(S) ((S) & 0x7f)
303 #define WIFEXITED(S) (((S) & 0xff) == 0)
306 #define WEXITSTATUS(S) (((S) & 0xff00) >> 8)
309 #define WSTOPSIG WEXITSTATUS
316 # ifdef NEED_DECLARATION_BCOPY
317 extern void bcopy PARAMS ((const PTR, PTR, size_t));
319 # else /* ! HAVE_BCOPY */
320 # define bcopy(src,dst,len) memmove((dst),(src),(len))
326 # ifdef NEED_DECLARATION_BCMP
327 extern int bcmp PARAMS ((const PTR, const PTR, size_t));
329 # else /* ! HAVE_BCMP */
330 # define bcmp(left,right,len) memcmp ((left),(right),(len))
336 # ifdef NEED_DECLARATION_BZERO
337 extern void bzero PARAMS ((PTR, size_t));
339 # else /* ! HAVE_BZERO */
340 # define bzero(dst,len) memset ((dst),0,(len))
346 # ifdef NEED_DECLARATION_INDEX
347 extern char *index PARAMS ((const char *, int));
349 # else /* ! HAVE_INDEX */
350 # define index strchr
356 # ifdef NEED_DECLARATION_RINDEX
357 extern char *rindex PARAMS ((const char *, int));
359 # else /* ! HAVE_RINDEX */
360 # define rindex strrchr
364 #ifdef NEED_DECLARATION_ATOF
365 extern double atof PARAMS ((const char *));
368 #ifdef NEED_DECLARATION_ATOL
369 extern long atol PARAMS ((const char *));
372 #ifdef NEED_DECLARATION_FREE
373 extern void free PARAMS ((PTR));
376 #ifdef NEED_DECLARATION_GETCWD
377 extern char *getcwd PARAMS ((char *, size_t));
380 #ifdef NEED_DECLARATION_GETENV
381 extern char *getenv PARAMS ((const char *));
384 #ifdef NEED_DECLARATION_GETWD
385 extern char *getwd PARAMS ((char *));
388 #ifdef NEED_DECLARATION_SBRK
389 extern PTR sbrk PARAMS ((int));
392 #ifdef NEED_DECLARATION_STRSTR
393 extern char *strstr PARAMS ((const char *, const char *));
400 #ifdef NEED_DECLARATION_MALLOC
401 extern PTR malloc PARAMS ((size_t));
404 #ifdef NEED_DECLARATION_CALLOC
405 extern PTR calloc PARAMS ((size_t, size_t));
408 #ifdef NEED_DECLARATION_REALLOC
409 extern PTR realloc PARAMS ((PTR, size_t));
412 /* If the system doesn't provide strsignal, we get it defined in
413 libiberty but no declaration is supplied. */
414 #ifdef NEED_DECLARATION_STRSIGNAL
416 extern const char *strsignal PARAMS ((int));
420 #ifdef HAVE_GETRLIMIT
421 # ifdef NEED_DECLARATION_GETRLIMIT
423 # ifdef ANSI_PROTOTYPES
426 extern int getrlimit PARAMS ((int, struct rlimit *));
431 #ifdef HAVE_SETRLIMIT
432 # ifdef NEED_DECLARATION_SETRLIMIT
434 # ifdef ANSI_PROTOTYPES
437 extern int setrlimit PARAMS ((int, const struct rlimit *));
442 /* HAVE_VOLATILE only refers to the stage1 compiler. We also check
443 __STDC__ and assume gcc sets it and has volatile in stage >=2. */
444 #if !defined(HAVE_VOLATILE) && !defined(__STDC__) && !defined(volatile)
448 #ifdef NEED_DECLARATION_ABORT
449 extern void abort PARAMS ((void));
452 /* Define a STRINGIFY macro that's right for ANSI or traditional C.
453 Note: if the argument passed to STRINGIFY is itself a macro, eg
454 #define foo bar, STRINGIFY(foo) will produce "foo", not "bar".
455 Although the __STDC__ case could be made to expand this via a layer
456 of indirection, the traditional C case can not do so. Therefore
457 this behavior is not supported. */
459 # ifdef HAVE_STRINGIZE
460 # define STRINGIFY(STRING) #STRING
462 # define STRINGIFY(STRING) "STRING"
464 #endif /* ! STRINGIFY */
467 # include <sys/stat.h>
470 /* Test if something is a normal file. */
472 #define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
475 /* Test if something is a directory. */
477 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
480 /* Test if something is a character special file. */
482 #define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR)
485 /* Test if something is a block special file. */
487 #define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK)
490 /* Test if something is a socket. */
493 # define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK)
495 # define S_ISSOCK(m) 0
499 /* Test if something is a FIFO. */
502 # define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO)
504 # define S_ISFIFO(m) 0
508 /* Approximate O_NONBLOCK. */
510 #define O_NONBLOCK O_NDELAY
513 /* Approximate O_NOCTTY. */
518 /* Define well known filenos if the system does not define them. */
520 # define STDIN_FILENO 0
522 #ifndef STDOUT_FILENO
523 # define STDOUT_FILENO 1
525 #ifndef STDERR_FILENO
526 # define STDERR_FILENO 2
529 /* Some systems have mkdir that takes a single argument. */
530 #ifdef MKDIR_TAKES_ONE_ARG
531 # define mkdir(a,b) mkdir(a)
534 /* Provide a way to print an address via printf. */
535 #ifndef HOST_PTR_PRINTF
536 # ifdef HAVE_PRINTF_PTR
537 # define HOST_PTR_PRINTF "%p"
539 # define HOST_PTR_PRINTF \
540 (sizeof (int) == sizeof (char *) ? "%x" \
541 : sizeof (long) == sizeof (char *) ? "%lx" : "%llx")
543 #endif /* ! HOST_PTR_PRINTF */
545 /* By default, colon separates directories in a path. */
546 #ifndef PATH_SEPARATOR
547 #define PATH_SEPARATOR ':'
550 #ifndef DIR_SEPARATOR
551 #define DIR_SEPARATOR '/'
554 /* Define IS_DIR_SEPARATOR. */
555 #ifndef DIR_SEPARATOR_2
556 # define IS_DIR_SEPARATOR(ch) ((ch) == DIR_SEPARATOR)
557 #else /* DIR_SEPARATOR_2 */
558 # define IS_DIR_SEPARATOR(ch) \
559 (((ch) == DIR_SEPARATOR) || ((ch) == DIR_SEPARATOR_2))
560 #endif /* DIR_SEPARATOR_2 */
562 /* Get libiberty declarations. */
563 #include "libiberty.h"
565 /* Make sure that ONLY_INT_FIELDS has an integral value. */
566 #ifdef ONLY_INT_FIELDS
567 #undef ONLY_INT_FIELDS
568 #define ONLY_INT_FIELDS 1
570 #define ONLY_INT_FIELDS 0
573 /* Enumerated bitfields are safe to use unless we've been explictly told
574 otherwise or if they are signed. */
576 #define USE_ENUM_BITFIELDS (__GNUC__ || (!ONLY_INT_FIELDS && ENUM_BITFIELDS_ARE_UNSIGNED))
578 #if USE_ENUM_BITFIELDS
579 #define ENUM_BITFIELD(TYPE) enum TYPE
581 #define ENUM_BITFIELD(TYPE) unsigned int
585 #endif /* __GCC_SYSTEM_H__ */