626 lines
17 KiB
C
626 lines
17 KiB
C
/* Get common system includes and various definitions and declarations based
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on autoconf macros.
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Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 2, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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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 GCC; see the file COPYING. If not, write to the Free
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Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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02111-1307, USA. */
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#ifndef GCC_SYSTEM_H
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#define GCC_SYSTEM_H
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/* This is the location of the online document giving information how
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to report bugs. If you change this string, also check for strings
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not under control of the preprocessor. */
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#define GCCBUGURL "<URL:http://www.gnu.org/software/gcc/bugs.html>"
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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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#ifndef va_copy
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# ifdef __va_copy
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# define va_copy(d,s) __va_copy((d),(s))
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# else
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# define va_copy(d,s) ((d) = (s))
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# endif
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#endif
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#ifdef HAVE_STDDEF_H
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# include <stddef.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. In fact, using the locking
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functions can cause the compiler to be significantly slower under
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I/O bound conditions (such as -g -O0 on very large source files).
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HAVE_DECL_PUTC_UNLOCKED actually indicates whether or not the stdio
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code is multi-thread safe by default. If it is set to 0, then do
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not worry about using the _unlocked functions.
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fputs_unlocked, fwrite_unlocked, and fprintf_unlocked are
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extensions and need to be prototyped by hand (since we do not
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define _GNU_SOURCE). */
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#if defined HAVE_DECL_PUTC_UNLOCKED && HAVE_DECL_PUTC_UNLOCKED
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# ifdef HAVE_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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# ifdef HAVE_FPUTC_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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# ifdef HAVE_FPUTS_UNLOCKED
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# undef fputs
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# define fputs(String, Stream) fputs_unlocked (String, Stream)
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# if defined (HAVE_DECL_FPUTS_UNLOCKED) && !HAVE_DECL_FPUTS_UNLOCKED
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extern int fputs_unlocked PARAMS ((const char *, FILE *));
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# endif
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# endif
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# ifdef HAVE_FWRITE_UNLOCKED
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# undef fwrite
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# define fwrite(Ptr, Size, N, Stream) fwrite_unlocked (Ptr, Size, N, Stream)
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# if defined (HAVE_DECL_FWRITE_UNLOCKED) && !HAVE_DECL_FWRITE_UNLOCKED
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extern int fwrite_unlocked PARAMS ((const PTR, size_t, size_t, FILE *));
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# endif
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# endif
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# ifdef HAVE_FPRINTF_UNLOCKED
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# undef fprintf
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/* We can't use a function-like macro here because we don't know if
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we have varargs macros. */
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# define fprintf fprintf_unlocked
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# if defined (HAVE_DECL_FPRINTF_UNLOCKED) && !HAVE_DECL_FPRINTF_UNLOCKED
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extern int fprintf_unlocked PARAMS ((FILE *, const char *, ...));
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# endif
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# endif
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#endif
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/* There are an extraordinary number of issues with <ctype.h>.
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The last straw is that it varies with the locale. Use libiberty's
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replacement instead. */
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#include <safe-ctype.h>
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#include <sys/types.h>
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#include <errno.h>
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#if !defined (errno) && defined (HAVE_DECL_ERRNO) && !HAVE_DECL_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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/* If we don't have an overriding definition, set SUCCESS_EXIT_CODE and
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FATAL_EXIT_CODE to EXIT_SUCCESS and EXIT_FAILURE respectively,
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or 0 and 1 if those macros are not defined. */
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#ifndef SUCCESS_EXIT_CODE
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# ifdef EXIT_SUCCESS
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# define SUCCESS_EXIT_CODE EXIT_SUCCESS
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# else
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# define SUCCESS_EXIT_CODE 0
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# endif
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#endif
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#ifndef FATAL_EXIT_CODE
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# ifdef EXIT_FAILURE
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# define FATAL_EXIT_CODE EXIT_FAILURE
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# else
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# define FATAL_EXIT_CODE 1
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# endif
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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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/* We use this identifier later and it appears in some vendor param.h's. */
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# undef PREFETCH
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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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/* Get definitions of HOST_WIDE_INT and HOST_WIDEST_INT. */
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#include "hwint.h"
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/* A macro to determine whether a VALUE lies inclusively within a
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certain range without evaluating the VALUE more than once. This
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macro won't warn if the VALUE is unsigned and the LOWER bound is
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zero, as it would e.g. with "VALUE >= 0 && ...". Note the LOWER
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bound *is* evaluated twice, and LOWER must not be greater than
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UPPER. However the bounds themselves can be either positive or
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negative. */
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#define IN_RANGE(VALUE, LOWER, UPPER) \
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((unsigned HOST_WIDE_INT) ((VALUE) - (LOWER)) <= ((UPPER) - (LOWER)))
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/* Infrastructure for defining missing _MAX and _MIN macros. Note that
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macros defined with these cannot be used in #if. */
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/* The extra casts work around common compiler bugs. */
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#define INTTYPE_SIGNED(t) (! ((t) 0 < (t) -1))
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/* The outer cast is needed to work around a bug in Cray C 5.0.3.0.
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It is necessary at least when t == time_t. */
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#define INTTYPE_MINIMUM(t) ((t) (INTTYPE_SIGNED (t) \
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? ~ (t) 0 << (sizeof(t) * CHAR_BIT - 1) : (t) 0))
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#define INTTYPE_MAXIMUM(t) ((t) (~ (t) 0 - INTTYPE_MINIMUM (t)))
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/* Use that infrastructure to provide a few constants. */
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#ifndef UCHAR_MAX
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# define UCHAR_MAX INTTYPE_MAXIMUM (unsigned char)
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#endif
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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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/* Returns the least number N such that N * Y >= X. */
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#define CEIL(x,y) (((x) + (y) - 1) / (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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/* The HAVE_DECL_* macros are three-state, undefined, 0 or 1. If they
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are defined to 0 then we must provide the relevant declaration
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here. These checks will be in the undefined state while configure
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is running so be careful to test "defined (HAVE_DECL_*)". */
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#if defined (HAVE_DECL_ATOF) && !HAVE_DECL_ATOF
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extern double atof PARAMS ((const char *));
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#endif
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#if defined (HAVE_DECL_ATOL) && !HAVE_DECL_ATOL
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extern long atol PARAMS ((const char *));
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#endif
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#if defined (HAVE_DECL_FREE) && !HAVE_DECL_FREE
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extern void free PARAMS ((PTR));
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#endif
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#if defined (HAVE_DECL_GETCWD) && !HAVE_DECL_GETCWD
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extern char *getcwd PARAMS ((char *, size_t));
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#endif
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#if defined (HAVE_DECL_GETENV) && !HAVE_DECL_GETENV
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extern char *getenv PARAMS ((const char *));
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#endif
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#if defined (HAVE_DECL_GETOPT) && !HAVE_DECL_GETOPT
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extern int getopt PARAMS ((int, char * const *, const char *));
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#endif
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#if defined (HAVE_DECL_GETWD) && !HAVE_DECL_GETWD
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extern char *getwd PARAMS ((char *));
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#endif
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#if defined (HAVE_DECL_SBRK) && !HAVE_DECL_SBRK
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extern PTR sbrk PARAMS ((int));
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#endif
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#if defined (HAVE_DECL_STRSTR) && !HAVE_DECL_STRSTR
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extern char *strstr PARAMS ((const char *, const char *));
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#endif
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#ifdef HAVE_MALLOC_H
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#include <malloc.h>
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#endif
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#if defined (HAVE_DECL_MALLOC) && !HAVE_DECL_MALLOC
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extern PTR malloc PARAMS ((size_t));
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#endif
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#if defined (HAVE_DECL_CALLOC) && !HAVE_DECL_CALLOC
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extern PTR calloc PARAMS ((size_t, size_t));
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#endif
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#if defined (HAVE_DECL_REALLOC) && !HAVE_DECL_REALLOC
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extern PTR realloc PARAMS ((PTR, size_t));
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#endif
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/* If the system doesn't provide strsignal, we get it defined in
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libiberty but no declaration is supplied. */
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#ifndef HAVE_STRSIGNAL
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# ifndef strsignal
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extern const char *strsignal PARAMS ((int));
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# endif
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#endif
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#ifdef HAVE_GETRLIMIT
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# if defined (HAVE_DECL_GETRLIMIT) && !HAVE_DECL_GETRLIMIT
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# ifndef getrlimit
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# ifdef ANSI_PROTOTYPES
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struct rlimit;
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# endif
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extern int getrlimit PARAMS ((int, struct rlimit *));
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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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# if defined (HAVE_DECL_SETRLIMIT) && !HAVE_DECL_SETRLIMIT
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# ifndef setrlimit
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# ifdef ANSI_PROTOTYPES
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struct rlimit;
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# endif
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extern int setrlimit PARAMS ((int, const struct rlimit *));
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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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#if defined (HAVE_DECL_ABORT) && !HAVE_DECL_ABORT
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extern void abort PARAMS ((void));
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#endif
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/* 1 if we have C99 designated initializers. */
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#if !defined(HAVE_DESIGNATED_INITIALIZERS)
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#define HAVE_DESIGNATED_INITIALIZERS \
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((GCC_VERSION >= 2007) || (__STDC_VERSION__ >= 199901L))
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#endif
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/* 1 if we have _Bool. */
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#ifndef HAVE__BOOL
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# define HAVE__BOOL \
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((GCC_VERSION >= 3000) || (__STDC_VERSION__ >= 199901L))
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#endif
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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 block special file. */
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#ifndef S_ISBLK
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#define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK)
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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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/* Provide a way to print an address via printf. */
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#ifndef HOST_PTR_PRINTF
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# ifdef HAVE_PRINTF_PTR
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# define HOST_PTR_PRINTF "%p"
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# else
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# define HOST_PTR_PRINTF \
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(sizeof (int) == sizeof (char *) ? "%x" \
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: sizeof (long) == sizeof (char *) ? "%lx" : "%llx")
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# endif
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#endif /* ! HOST_PTR_PRINTF */
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/* By default, colon separates directories in a path. */
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#ifndef PATH_SEPARATOR
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#define PATH_SEPARATOR ':'
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#endif
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#ifndef DIR_SEPARATOR
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#define DIR_SEPARATOR '/'
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#endif
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/* Define IS_DIR_SEPARATOR. */
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#ifndef DIR_SEPARATOR_2
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# define IS_DIR_SEPARATOR(CH) ((CH) == DIR_SEPARATOR)
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#else /* DIR_SEPARATOR_2 */
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# define IS_DIR_SEPARATOR(CH) \
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(((CH) == DIR_SEPARATOR) || ((CH) == DIR_SEPARATOR_2))
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#endif /* DIR_SEPARATOR_2 */
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/* Say how to test for an absolute pathname. On Unix systems, this is if
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it starts with a leading slash or a '$', the latter meaning the value of
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an environment variable is to be used. On machien with DOS-based
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file systems, it is also absolute if it starts with a drive identifier. */
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#ifdef HAVE_DOS_BASED_FILE_SYSTEM
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#define IS_ABSOLUTE_PATHNAME(STR) \
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(IS_DIR_SEPARATOR ((STR)[0]) || (STR)[0] == '$' \
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|| ((STR)[0] != '\0' && (STR)[1] == ':' && IS_DIR_SEPARATOR ((STR)[2])))
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#else
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#define IS_ABSOLUTE_PATHNAME(STR) \
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(IS_DIR_SEPARATOR ((STR)[0]) || (STR)[0] == '$')
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#endif
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/* Get libiberty declarations. */
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#include "libiberty.h"
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#include "symcat.h"
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/* Provide a default for the HOST_BIT_BUCKET.
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This suffices for POSIX-like hosts. */
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#ifndef HOST_BIT_BUCKET
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#define HOST_BIT_BUCKET "/dev/null"
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#endif
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/* Be conservative and only use enum bitfields with GCC.
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FIXME: provide a complete autoconf test for buggy enum bitfields. */
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#if (GCC_VERSION > 2000)
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#define ENUM_BITFIELD(TYPE) enum TYPE
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#else
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#define ENUM_BITFIELD(TYPE) unsigned int
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#endif
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#ifndef offsetof
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#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *) 0)->MEMBER)
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#endif
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/* Traditional C cannot initialize union members of structs. Provide
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a macro which expands appropriately to handle it. This only works
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if you intend to initialize the union member to zero since it relies
|
|
on default initialization to zero in the traditional C case. */
|
|
#ifdef __STDC__
|
|
#define UNION_INIT_ZERO , {0}
|
|
#else
|
|
#define UNION_INIT_ZERO
|
|
#endif
|
|
|
|
/* Various error reporting routines want to use __FUNCTION__. */
|
|
#if (GCC_VERSION < 2007)
|
|
#ifndef __FUNCTION__
|
|
#define __FUNCTION__ "?"
|
|
#endif /* ! __FUNCTION__ */
|
|
#endif
|
|
|
|
/* __builtin_expect(A, B) evaluates to A, but notifies the compiler that
|
|
the most likely value of A is B. This feature was added at some point
|
|
between 2.95 and 3.0. Let's use 3.0 as the lower bound for now. */
|
|
#if (GCC_VERSION < 3000)
|
|
#define __builtin_expect(a, b) (a)
|
|
#endif
|
|
|
|
/* Provide some sort of boolean type. We use stdbool.h if it's
|
|
available. This must be after all inclusion of system headers,
|
|
as some of them will mess us up. */
|
|
#undef bool
|
|
#undef true
|
|
#undef false
|
|
#undef TRUE
|
|
#undef FALSE
|
|
|
|
#ifdef HAVE_STDBOOL_H
|
|
# include <stdbool.h>
|
|
#else
|
|
# if !HAVE__BOOL
|
|
typedef char _Bool;
|
|
# endif
|
|
# define bool _Bool
|
|
# define true 1
|
|
# define false 0
|
|
#endif
|
|
|
|
#define TRUE true
|
|
#define FALSE false
|
|
|
|
/* As the last action in this file, we poison the identifiers that
|
|
shouldn't be used. Note, luckily gcc-3.0's token-based integrated
|
|
preprocessor won't trip on poisoned identifiers that arrive from
|
|
the expansion of macros. E.g. #define strrchr rindex, won't error
|
|
if rindex is poisoned after this directive is issued and later on
|
|
strrchr is called.
|
|
|
|
Note: We define bypass macros for the few cases where we really
|
|
want to use the libc memory allocation routines. Otherwise we
|
|
insist you use the "x" versions from libiberty. */
|
|
|
|
#define really_call_malloc malloc
|
|
#define really_call_calloc calloc
|
|
#define really_call_realloc realloc
|
|
|
|
#if (GCC_VERSION >= 3000)
|
|
|
|
/* Note autoconf checks for prototype declarations and includes
|
|
system.h while doing so. Only poison these tokens if actually
|
|
compiling gcc, so that the autoconf declaration tests for malloc
|
|
etc don't spuriously fail. */
|
|
#ifdef IN_GCC
|
|
#undef malloc
|
|
#undef realloc
|
|
#undef calloc
|
|
#undef strdup
|
|
#pragma GCC poison malloc realloc calloc strdup
|
|
|
|
/* Old target macros that have moved to the target hooks structure. */
|
|
#pragma GCC poison ASM_OPEN_PAREN ASM_CLOSE_PAREN \
|
|
FUNCTION_PROLOGUE FUNCTION_EPILOGUE \
|
|
FUNCTION_END_PROLOGUE FUNCTION_BEGIN_EPILOGUE \
|
|
DECL_MACHINE_ATTRIBUTES COMP_TYPE_ATTRIBUTES INSERT_ATTRIBUTES \
|
|
VALID_MACHINE_DECL_ATTRIBUTE VALID_MACHINE_TYPE_ATTRIBUTE \
|
|
SET_DEFAULT_TYPE_ATTRIBUTES SET_DEFAULT_DECL_ATTRIBUTES \
|
|
MERGE_MACHINE_TYPE_ATTRIBUTES MERGE_MACHINE_DECL_ATTRIBUTES \
|
|
MD_INIT_BUILTINS MD_EXPAND_BUILTIN ASM_OUTPUT_CONSTRUCTOR \
|
|
ASM_OUTPUT_DESTRUCTOR SIGNED_CHAR_SPEC
|
|
|
|
/* And other obsolete target macros, or macros that used to be in target
|
|
headers and were not used, and may be obsolete or may never have
|
|
been used. */
|
|
#pragma GCC poison INT_ASM_OP ASM_OUTPUT_EH_REGION_BEG \
|
|
ASM_OUTPUT_EH_REGION_END ASM_OUTPUT_LABELREF_AS_INT \
|
|
DOESNT_NEED_UNWINDER EH_TABLE_LOOKUP OBJC_SELECTORS_WITHOUT_LABELS \
|
|
OMIT_EH_TABLE EASY_DIV_EXPR IMPLICIT_FIX_EXPR \
|
|
LONGJMP_RESTORE_FROM_STACK MAX_INT_TYPE_SIZE ASM_IDENTIFY_GCC \
|
|
STDC_VALUE TRAMPOLINE_ALIGN ASM_IDENTIFY_GCC_AFTER_SOURCE \
|
|
SLOW_ZERO_EXTEND SUBREG_REGNO_OFFSET DWARF_LINE_MIN_INSTR_LENGTH \
|
|
BLOCK_PROFILER BLOCK_PROFILER_CODE FUNCTION_BLOCK_PROFILER \
|
|
FUNCTION_BLOCK_PROFILER_EXIT MACHINE_STATE_SAVE \
|
|
MACHINE_STATE_RESTORE
|
|
|
|
#endif /* IN_GCC */
|
|
|
|
/* Note: not all uses of the `index' token (e.g. variable names and
|
|
structure members) have been eliminated. */
|
|
#undef bcopy
|
|
#undef bzero
|
|
#undef bcmp
|
|
#undef rindex
|
|
#pragma GCC poison bcopy bzero bcmp rindex
|
|
|
|
#endif /* GCC >= 3.0 */
|
|
|
|
#endif /* ! GCC_SYSTEM_H */
|