494 lines
13 KiB
C
494 lines
13 KiB
C
/* system.h - Get common system includes and various definitions and
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declarations based on autoconf macros.
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Copyright (C) 1998, 1999 Free Software Foundation, Inc.
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This file is part of GNU CC.
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GNU CC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU CC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#ifndef __GCC_SYSTEM_H__
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#define __GCC_SYSTEM_H__
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/* We must include stdarg.h/varargs.h before stdio.h. */
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#ifdef ANSI_PROTOTYPES
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#include <stdarg.h>
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#else
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#include <varargs.h>
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#endif
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#include <stdio.h>
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/* Define a generic NULL if one hasn't already been defined. */
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#ifndef NULL
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#define NULL 0
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#endif
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/* The compiler is not a multi-threaded application and therefore we
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do not have to use the locking functions.
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NEED_DECLARATION_PUTC_UNLOCKED actually indicates whether or not
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the IO code is multi-thread safe by default. If it is not declared,
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then do not worry about using the _unlocked functions.
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fputs_unlocked is an extension and needs to be prototyped specially. */
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#if defined HAVE_PUTC_UNLOCKED && !defined NEED_DECLARATION_PUTC_UNLOCKED
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# undef putc
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# define putc(C, Stream) putc_unlocked (C, Stream)
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#endif
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#if defined HAVE_FPUTC_UNLOCKED && !defined NEED_DECLARATION_PUTC_UNLOCKED
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# undef fputc
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# define fputc(C, Stream) fputc_unlocked (C, Stream)
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#endif
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#if defined HAVE_FPUTS_UNLOCKED && !defined NEED_DECLARATION_PUTC_UNLOCKED
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# undef fputs
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# define fputs(String, Stream) fputs_unlocked (String, Stream)
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# ifdef NEED_DECLARATION_FPUTS_UNLOCKED
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extern int fputs_unlocked PROTO ((const char *, FILE *));
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# endif
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#endif
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#include <ctype.h>
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/* Jim Meyering writes:
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"... Some ctype macros are valid only for character codes that
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isascii says are ASCII (SGI's IRIX-4.0.5 is one such system --when
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using /bin/cc or gcc but without giving an ansi option). So, all
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ctype uses should be through macros like ISPRINT... If
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STDC_HEADERS is defined, then autoconf has verified that the ctype
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macros don't need to be guarded with references to isascii. ...
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Defining isascii to 1 should let any compiler worth its salt
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eliminate the && through constant folding."
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Bruno Haible adds:
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"... Furthermore, isupper(c) etc. have an undefined result if c is
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outside the range -1 <= c <= 255. One is tempted to write isupper(c)
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with c being of type `char', but this is wrong if c is an 8-bit
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character >= 128 which gets sign-extended to a negative value.
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The macro ISUPPER protects against this as well." */
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#if defined (STDC_HEADERS) || (!defined (isascii) && !defined (HAVE_ISASCII))
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# define IN_CTYPE_DOMAIN(c) 1
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#else
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# define IN_CTYPE_DOMAIN(c) isascii(c)
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#endif
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#ifdef isblank
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# define ISBLANK(c) (IN_CTYPE_DOMAIN (c) && isblank (c))
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#else
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# define ISBLANK(c) ((c) == ' ' || (c) == '\t')
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#endif
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#ifdef isgraph
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# define ISGRAPH(c) (IN_CTYPE_DOMAIN (c) && isgraph (c))
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#else
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# define ISGRAPH(c) (IN_CTYPE_DOMAIN (c) && isprint (c) && !isspace (c))
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#endif
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#define ISPRINT(c) (IN_CTYPE_DOMAIN (c) && isprint (c))
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#define ISALNUM(c) (IN_CTYPE_DOMAIN (c) && isalnum (c))
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#define ISALPHA(c) (IN_CTYPE_DOMAIN (c) && isalpha (c))
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#define ISCNTRL(c) (IN_CTYPE_DOMAIN (c) && iscntrl (c))
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#define ISLOWER(c) (IN_CTYPE_DOMAIN (c) && islower (c))
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#define ISPUNCT(c) (IN_CTYPE_DOMAIN (c) && ispunct (c))
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#define ISSPACE(c) (IN_CTYPE_DOMAIN (c) && isspace (c))
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#define ISUPPER(c) (IN_CTYPE_DOMAIN (c) && isupper (c))
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#define ISXDIGIT(c) (IN_CTYPE_DOMAIN (c) && isxdigit (c))
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#define ISDIGIT_LOCALE(c) (IN_CTYPE_DOMAIN (c) && isdigit (c))
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/* ISDIGIT differs from ISDIGIT_LOCALE, as follows:
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- Its arg may be any int or unsigned int; it need not be an unsigned char.
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- It's guaranteed to evaluate its argument exactly once.
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- It's typically faster.
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Posix 1003.2-1992 section 2.5.2.1 page 50 lines 1556-1558 says that
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only '0' through '9' are digits. Prefer ISDIGIT to ISDIGIT_LOCALE unless
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it's important to use the locale's definition of `digit' even when the
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host does not conform to Posix. */
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#define ISDIGIT(c) ((unsigned) (c) - '0' <= 9)
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#include <sys/types.h>
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#include <errno.h>
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#ifndef errno
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extern int errno;
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#endif
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#ifdef STRING_WITH_STRINGS
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# include <string.h>
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# include <strings.h>
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#else
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# ifdef HAVE_STRING_H
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# include <string.h>
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# else
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# ifdef HAVE_STRINGS_H
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# include <strings.h>
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# endif
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# endif
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#endif
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#ifdef HAVE_STDLIB_H
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# include <stdlib.h>
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#endif
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#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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#ifdef HAVE_SYS_PARAM_H
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# include <sys/param.h>
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#endif
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#if HAVE_LIMITS_H
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# include <limits.h>
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#endif
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/* Find HOST_WIDEST_INT and set its bit size, type and print macros.
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It will be the largest integer mode supported by the host which may
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(or may not) be larger than HOST_WIDE_INT. This must appear after
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<limits.h> since we only use `long long' if its bigger than a
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`long' and also if it is supported by macros in limits.h. For old
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hosts which don't have a limits.h (and thus won't include it in
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stage2 cause we don't rerun configure) we assume gcc supports long
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long.) Note, you won't get these defined if you don't include
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{ht}config.h before this file to set the HOST_BITS_PER_* macros. */
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#ifndef HOST_WIDEST_INT
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# if defined (HOST_BITS_PER_LONG) && defined (HOST_BITS_PER_LONGLONG)
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# if (HOST_BITS_PER_LONGLONG > HOST_BITS_PER_LONG) && (defined (LONG_LONG_MAX) || defined (LONGLONG_MAX) || defined (LLONG_MAX) || defined (__GNUC__))
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# define HOST_BITS_PER_WIDEST_INT HOST_BITS_PER_LONGLONG
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# define HOST_WIDEST_INT long long
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# define HOST_WIDEST_INT_PRINT_DEC "%lld"
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# define HOST_WIDEST_INT_PRINT_UNSIGNED "%llu"
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# define HOST_WIDEST_INT_PRINT_HEX "0x%llx"
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# else
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# define HOST_BITS_PER_WIDEST_INT HOST_BITS_PER_LONG
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# define HOST_WIDEST_INT long
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# define HOST_WIDEST_INT_PRINT_DEC "%ld"
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# define HOST_WIDEST_INT_PRINT_UNSIGNED "%lu"
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# define HOST_WIDEST_INT_PRINT_HEX "0x%lx"
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# endif /*(long long>long) && (LONG_LONG_MAX||LONGLONG_MAX||LLONG_MAX||GNUC)*/
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# endif /* defined(HOST_BITS_PER_LONG) && defined(HOST_BITS_PER_LONGLONG) */
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#endif /* ! HOST_WIDEST_INT */
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#ifdef TIME_WITH_SYS_TIME
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# include <sys/time.h>
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# include <time.h>
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#else
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# if HAVE_SYS_TIME_H
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# include <sys/time.h>
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# else
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# ifdef HAVE_TIME_H
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# include <time.h>
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# endif
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# endif
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#endif
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#ifdef HAVE_FCNTL_H
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# include <fcntl.h>
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#else
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# ifdef HAVE_SYS_FILE_H
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# include <sys/file.h>
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# endif
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#endif
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#ifndef SEEK_SET
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# define SEEK_SET 0
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# define SEEK_CUR 1
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# define SEEK_END 2
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#endif
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#ifndef F_OK
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# define F_OK 0
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# define X_OK 1
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# define W_OK 2
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# define R_OK 4
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#endif
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#ifndef O_RDONLY
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# define O_RDONLY 0
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#endif
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#ifndef O_WRONLY
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# define O_WRONLY 1
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#endif
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/* Some systems define these in, e.g., param.h. We undefine these names
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here to avoid the warnings. We prefer to use our definitions since we
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know they are correct. */
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#undef MIN
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#undef MAX
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#define MIN(X,Y) ((X) < (Y) ? (X) : (Y))
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#define MAX(X,Y) ((X) > (Y) ? (X) : (Y))
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#ifdef HAVE_SYS_WAIT_H
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#include <sys/wait.h>
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#endif
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#ifndef WIFSIGNALED
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#define WIFSIGNALED(S) (((S) & 0xff) != 0 && ((S) & 0xff) != 0x7f)
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#endif
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#ifndef WTERMSIG
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#define WTERMSIG(S) ((S) & 0x7f)
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#endif
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#ifndef WIFEXITED
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#define WIFEXITED(S) (((S) & 0xff) == 0)
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#endif
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#ifndef WEXITSTATUS
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#define WEXITSTATUS(S) (((S) & 0xff00) >> 8)
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#endif
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#ifndef WSTOPSIG
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#define WSTOPSIG WEXITSTATUS
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#endif
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#ifndef bcopy
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# ifdef HAVE_BCOPY
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# ifdef NEED_DECLARATION_BCOPY
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extern void bcopy ();
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# endif
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# else /* ! HAVE_BCOPY */
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# define bcopy(src,dst,len) memmove((dst),(src),(len))
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# endif
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#endif
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#ifndef bcmp
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# ifdef HAVE_BCMP
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# ifdef NEED_DECLARATION_BCMP
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extern int bcmp ();
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# endif
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# else /* ! HAVE_BCMP */
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# define bcmp(left,right,len) memcmp ((left),(right),(len))
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# endif
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#endif
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#ifndef bzero
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# ifdef HAVE_BZERO
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# ifdef NEED_DECLARATION_BZERO
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extern void bzero ();
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# endif
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# else /* ! HAVE_BZERO */
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# define bzero(dst,len) memset ((dst),0,(len))
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# endif
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#endif
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#ifndef index
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# ifdef HAVE_INDEX
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# ifdef NEED_DECLARATION_INDEX
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extern char *index ();
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# endif
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# else /* ! HAVE_INDEX */
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# define index strchr
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# endif
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#endif
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#ifndef rindex
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# ifdef HAVE_RINDEX
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# ifdef NEED_DECLARATION_RINDEX
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extern char *rindex ();
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# endif
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# else /* ! HAVE_RINDEX */
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# define rindex strrchr
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# endif
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#endif
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#ifdef NEED_DECLARATION_ATOF
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extern double atof ();
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#endif
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#ifdef NEED_DECLARATION_ATOL
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extern long atol();
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#endif
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#ifdef NEED_DECLARATION_FREE
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extern void free ();
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#endif
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#ifdef NEED_DECLARATION_GETCWD
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extern char *getcwd ();
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#endif
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#ifdef NEED_DECLARATION_GETENV
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extern char *getenv ();
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#endif
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#ifdef NEED_DECLARATION_GETWD
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extern char *getwd ();
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#endif
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#ifdef NEED_DECLARATION_SBRK
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extern char *sbrk ();
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#endif
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#ifdef NEED_DECLARATION_STRSTR
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extern char *strstr ();
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#endif
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#ifdef HAVE_STRERROR
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# ifdef NEED_DECLARATION_STRERROR
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# ifndef strerror
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extern char *strerror ();
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# endif
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# endif
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#else /* ! HAVE_STRERROR */
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extern int sys_nerr;
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extern char *sys_errlist[];
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#endif /* HAVE_STRERROR */
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#ifdef HAVE_STRSIGNAL
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# ifdef NEED_DECLARATION_STRSIGNAL
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# ifndef strsignal
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extern char * strsignal ();
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# endif
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# endif
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#else /* ! HAVE_STRSIGNAL */
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# ifndef SYS_SIGLIST_DECLARED
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# ifndef NO_SYS_SIGLIST
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extern char * sys_siglist[];
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# endif
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# endif
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#endif /* HAVE_STRSIGNAL */
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#ifdef HAVE_GETRLIMIT
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# ifdef NEED_DECLARATION_GETRLIMIT
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# ifndef getrlimit
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extern int getrlimit ();
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# endif
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# endif
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#endif
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#ifdef HAVE_SETRLIMIT
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# ifdef NEED_DECLARATION_SETRLIMIT
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# ifndef setrlimit
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extern int setrlimit ();
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# endif
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# endif
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#endif
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/* HAVE_VOLATILE only refers to the stage1 compiler. We also check
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__STDC__ and assume gcc sets it and has volatile in stage >=2. */
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#if !defined(HAVE_VOLATILE) && !defined(__STDC__) && !defined(volatile)
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#define volatile
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#endif
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/* Redefine abort to report an internal error w/o coredump, and reporting the
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location of the error in the source file.
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Some files undefine abort again, so we must prototype the real thing
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for their sake. */
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#ifdef NEED_DECLARATION_ABORT
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extern void abort ();
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#endif
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extern void fatal PVPROTO((const char *, ...)) ATTRIBUTE_PRINTF_1 ATTRIBUTE_NORETURN;
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#if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
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#define abort() fatal ("Internal compiler error at %s:%d\n", \
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trim_filename (__FILE__), __LINE__)
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#else
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#define abort() fatal ("Internal compiler error in `%s', at %s:%d\n" \
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"Please submit a full bug report.\n" \
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"See <URL:http://www.gnu.org/software/gcc/faq.html#bugreport> for instructions.", \
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__PRETTY_FUNCTION__, trim_filename (__FILE__), __LINE__)
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#endif /* recent gcc */
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/* trim_filename is in toplev.c. Define a stub macro for files that
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don't link toplev.c. toplev.h will reset it to the real version. */
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#define trim_filename(x) (x)
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/* Define a STRINGIFY macro that's right for ANSI or traditional C.
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HAVE_CPP_STRINGIFY only refers to the stage1 compiler. Assume that
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(non-traditional) gcc used in stage2 or later has this feature.
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Note: if the argument passed to STRINGIFY is itself a macro, eg
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#define foo bar, STRINGIFY(foo) will produce "foo", not "bar".
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Although the __STDC__ case could be made to expand this via a layer
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of indirection, the traditional C case can not do so. Therefore
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this behavior is not supported. */
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#ifndef STRINGIFY
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# if defined(HAVE_CPP_STRINGIFY) || (defined(__GNUC__) && defined(__STDC__))
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# define STRINGIFY(STRING) #STRING
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# else
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# define STRINGIFY(STRING) "STRING"
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# endif
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#endif /* ! STRINGIFY */
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#if HAVE_SYS_STAT_H
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# include <sys/stat.h>
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#endif
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/* Test if something is a normal file. */
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#ifndef S_ISREG
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#define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
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#endif
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/* Test if something is a directory. */
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#ifndef S_ISDIR
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#define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
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#endif
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/* Test if something is a character special file. */
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#ifndef S_ISCHR
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#define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR)
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#endif
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/* Test if something is a socket. */
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#ifndef S_ISSOCK
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# ifdef S_IFSOCK
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# define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK)
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# else
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# define S_ISSOCK(m) 0
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# endif
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#endif
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/* Test if something is a FIFO. */
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#ifndef S_ISFIFO
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# ifdef S_IFIFO
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# define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO)
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# else
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# define S_ISFIFO(m) 0
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# endif
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#endif
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/* Approximate O_NONBLOCK. */
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#ifndef O_NONBLOCK
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#define O_NONBLOCK O_NDELAY
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#endif
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/* Approximate O_NOCTTY. */
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#ifndef O_NOCTTY
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#define O_NOCTTY 0
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#endif
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/* Define well known filenos if the system does not define them. */
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#ifndef STDIN_FILENO
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# define STDIN_FILENO 0
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#endif
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#ifndef STDOUT_FILENO
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# define STDOUT_FILENO 1
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#endif
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#ifndef STDERR_FILENO
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# define STDERR_FILENO 2
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#endif
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/* Some systems have mkdir that takes a single argument. */
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#ifdef MKDIR_TAKES_ONE_ARG
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# define mkdir(a,b) mkdir(a)
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#endif
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/* Get libiberty declarations. */
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#include "libiberty.h"
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#endif /* __GCC_SYSTEM_H__ */
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