ef24330ddf
* system.h (CALLER_SAVE_PROFITABLE): Poison. * regs.h (CALLER_SAVE_PROFITABLE): Remove. * doc/tm.texi.in (CALLER_SAVE_PROFITABLE): Remove. * doc/tm.texi: Regenerate. From-SVN: r214405
1092 lines
34 KiB
C++
1092 lines
34 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) 1998-2014 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 3, 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 COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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#ifndef GCC_SYSTEM_H
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#define GCC_SYSTEM_H
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/* Define this so that inttypes.h defines the PRI?64 macros even
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when compiling with a C++ compiler. Define it here so in the
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event inttypes.h gets pulled in by another header it is already
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defined. */
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#define __STDC_FORMAT_MACROS
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/* We must include stdarg.h before stdio.h. */
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#include <stdarg.h>
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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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/* Use the unlocked open routines from libiberty. */
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/* Some of these are #define on some systems, e.g. on AIX to redirect
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the names to 64bit capable functions for LARGE_FILES support. These
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redefs are pointless here so we can override them. */
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#undef fopen
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#undef freopen
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#define fopen(PATH, MODE) fopen_unlocked (PATH, MODE)
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#define fdopen(FILDES, MODE) fdopen_unlocked (FILDES, MODE)
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#define freopen(PATH, MODE, STREAM) freopen_unlocked (PATH, MODE, STREAM)
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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_PUTCHAR_UNLOCKED
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# undef putchar
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# define putchar(C) putchar_unlocked (C)
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# endif
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# ifdef HAVE_GETC_UNLOCKED
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# undef getc
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# define getc(Stream) getc_unlocked (Stream)
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# endif
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# ifdef HAVE_GETCHAR_UNLOCKED
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# undef getchar
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# define getchar() getchar_unlocked ()
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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 __cplusplus
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extern "C" {
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#endif
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# ifdef HAVE_CLEARERR_UNLOCKED
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# undef clearerr
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# define clearerr(Stream) clearerr_unlocked (Stream)
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# if defined (HAVE_DECL_CLEARERR_UNLOCKED) && !HAVE_DECL_CLEARERR_UNLOCKED
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extern void clearerr_unlocked (FILE *);
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# endif
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# endif
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# ifdef HAVE_FEOF_UNLOCKED
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# undef feof
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# define feof(Stream) feof_unlocked (Stream)
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# if defined (HAVE_DECL_FEOF_UNLOCKED) && !HAVE_DECL_FEOF_UNLOCKED
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extern int feof_unlocked (FILE *);
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# endif
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# endif
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# ifdef HAVE_FILENO_UNLOCKED
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# undef fileno
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# define fileno(Stream) fileno_unlocked (Stream)
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# if defined (HAVE_DECL_FILENO_UNLOCKED) && !HAVE_DECL_FILENO_UNLOCKED
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extern int fileno_unlocked (FILE *);
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# endif
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# endif
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# ifdef HAVE_FFLUSH_UNLOCKED
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# undef fflush
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# define fflush(Stream) fflush_unlocked (Stream)
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# if defined (HAVE_DECL_FFLUSH_UNLOCKED) && !HAVE_DECL_FFLUSH_UNLOCKED
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extern int fflush_unlocked (FILE *);
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# endif
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# endif
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# ifdef HAVE_FGETC_UNLOCKED
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# undef fgetc
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# define fgetc(Stream) fgetc_unlocked (Stream)
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# if defined (HAVE_DECL_FGETC_UNLOCKED) && !HAVE_DECL_FGETC_UNLOCKED
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extern int fgetc_unlocked (FILE *);
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# endif
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# endif
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# ifdef HAVE_FGETS_UNLOCKED
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# undef fgets
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# define fgets(S, n, Stream) fgets_unlocked (S, n, Stream)
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# if defined (HAVE_DECL_FGETS_UNLOCKED) && !HAVE_DECL_FGETS_UNLOCKED
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extern char *fgets_unlocked (char *, int, FILE *);
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# endif
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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 (const char *, FILE *);
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# endif
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# endif
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# ifdef HAVE_FERROR_UNLOCKED
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# undef ferror
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# define ferror(Stream) ferror_unlocked (Stream)
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# if defined (HAVE_DECL_FERROR_UNLOCKED) && !HAVE_DECL_FERROR_UNLOCKED
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extern int ferror_unlocked (FILE *);
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# endif
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# endif
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# ifdef HAVE_FREAD_UNLOCKED
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# undef fread
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# define fread(Ptr, Size, N, Stream) fread_unlocked (Ptr, Size, N, Stream)
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# if defined (HAVE_DECL_FREAD_UNLOCKED) && !HAVE_DECL_FREAD_UNLOCKED
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extern size_t fread_unlocked (void *, size_t, size_t, 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 size_t fwrite_unlocked (const void *, 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 (FILE *, const char *, ...);
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# endif
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# endif
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#ifdef __cplusplus
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}
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#endif
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#endif
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/* ??? Glibc's fwrite/fread_unlocked macros cause
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"warning: signed and unsigned type in conditional expression". */
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#undef fread_unlocked
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#undef fwrite_unlocked
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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 __cplusplus
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# include <cstring>
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#endif
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/* Some of glibc's string inlines cause warnings. Plus we'd rather
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rely on (and therefore test) GCC's string builtins. */
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#define __NO_STRING_INLINES
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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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/* When compiling C++ we need to include <cstdlib> as well as <stdlib.h> so
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that it is processed before we poison "malloc"; otherwise, if a source
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file uses a standard library header that includes <cstdlib>, we will get
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an error about 'using std::malloc'. */
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#ifdef __cplusplus
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#include <cstdlib>
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#endif
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/* Undef vec_free from AIX stdlib.h header which conflicts with vec.h. */
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#undef vec_free
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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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#define ICE_EXIT_CODE 4
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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 these identifiers later and they appear in some vendor param.h's. */
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# undef PREFETCH
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# undef m_slot
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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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/* 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) - (unsigned HOST_WIDE_INT) (LOWER) \
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<= (unsigned HOST_WIDE_INT) (UPPER) - (unsigned HOST_WIDE_INT) (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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#ifndef O_BINARY
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# define O_BINARY 0
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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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#ifndef WCOREDUMP
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#define WCOREDUMP(S) ((S) & WCOREFLG)
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#endif
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#ifndef WCOREFLG
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#define WCOREFLG 0200
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#endif
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#include <signal.h>
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#if !defined (SIGCHLD) && defined (SIGCLD)
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# define SIGCHLD SIGCLD
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#endif
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#ifdef HAVE_SYS_MMAN_H
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# include <sys/mman.h>
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#endif
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#ifndef MAP_FAILED
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# define MAP_FAILED ((void *)-1)
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#endif
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#if !defined (MAP_ANONYMOUS) && defined (MAP_ANON)
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# define MAP_ANONYMOUS MAP_ANON
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#endif
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#ifdef HAVE_SYS_RESOURCE_H
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# include <sys/resource.h>
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#endif
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#ifdef HAVE_SYS_TIMES_H
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# include <sys/times.h>
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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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|
|
#ifdef __cplusplus
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|
extern "C" {
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#endif
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#if defined (HAVE_DECL_ATOF) && !HAVE_DECL_ATOF
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|
extern double atof (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 (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 (void *);
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|
#endif
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|
|
#if defined (HAVE_DECL_GETCWD) && !HAVE_DECL_GETCWD
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|
extern char *getcwd (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 (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 (int, char * const *, const char *);
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|
#endif
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|
#if defined (HAVE_DECL_GETPAGESIZE) && !HAVE_DECL_GETPAGESIZE
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|
extern int getpagesize (void);
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|
#endif
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|
#if defined (HAVE_DECL_GETWD) && !HAVE_DECL_GETWD
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|
extern char *getwd (char *);
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|
#endif
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|
|
#if defined (HAVE_DECL_SBRK) && !HAVE_DECL_SBRK
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|
extern void *sbrk (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 (const char *, const char *);
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|
#endif
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|
#if defined (HAVE_DECL_STPCPY) && !HAVE_DECL_STPCPY
|
|
extern char *stpcpy (char *, const char *);
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|
#endif
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|
|
|
#ifdef __cplusplus
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|
}
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|
#endif
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|
|
|
#ifdef HAVE_MALLOC_H
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|
#include <malloc.h>
|
|
#endif
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|
|
|
#ifdef __cplusplus
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|
extern "C" {
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|
#endif
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|
|
#if defined (HAVE_DECL_MALLOC) && !HAVE_DECL_MALLOC
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|
extern void *malloc (size_t);
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|
#endif
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|
#if defined (HAVE_DECL_CALLOC) && !HAVE_DECL_CALLOC
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|
extern void *calloc (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 void *realloc (void *, size_t);
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|
#endif
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|
|
#ifdef __cplusplus
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|
}
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|
#endif
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|
|
#ifdef HAVE_STDINT_H
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|
#include <stdint.h>
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|
#endif
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|
|
#ifdef HAVE_INTTYPES_H
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|
#include <inttypes.h>
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|
#endif
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|
|
#ifdef __cplusplus
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|
extern "C" {
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|
#endif
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|
|
/* If the system doesn't provide strsignal, we get it defined in
|
|
libiberty but no declaration is supplied. */
|
|
#if !defined (HAVE_STRSIGNAL) \
|
|
|| (defined (HAVE_DECL_STRSIGNAL) && !HAVE_DECL_STRSIGNAL)
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|
# ifndef strsignal
|
|
extern const char *strsignal (int);
|
|
# endif
|
|
#endif
|
|
|
|
#ifdef HAVE_GETRLIMIT
|
|
# if defined (HAVE_DECL_GETRLIMIT) && !HAVE_DECL_GETRLIMIT
|
|
# ifndef getrlimit
|
|
struct rlimit;
|
|
extern int getrlimit (int, struct rlimit *);
|
|
# endif
|
|
# endif
|
|
#endif
|
|
|
|
#ifdef HAVE_SETRLIMIT
|
|
# if defined (HAVE_DECL_SETRLIMIT) && !HAVE_DECL_SETRLIMIT
|
|
# ifndef setrlimit
|
|
struct rlimit;
|
|
extern int setrlimit (int, const struct rlimit *);
|
|
# endif
|
|
# endif
|
|
#endif
|
|
|
|
#if defined (HAVE_DECL_ABORT) && !HAVE_DECL_ABORT
|
|
extern void abort (void);
|
|
#endif
|
|
|
|
#if defined (HAVE_DECL_SNPRINTF) && !HAVE_DECL_SNPRINTF
|
|
extern int snprintf (char *, size_t, const char *, ...);
|
|
#endif
|
|
|
|
#if defined (HAVE_DECL_VSNPRINTF) && !HAVE_DECL_VSNPRINTF
|
|
extern int vsnprintf (char *, size_t, const char *, va_list);
|
|
#endif
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
/* 1 if we have C99 designated initializers. */
|
|
#if !defined(HAVE_DESIGNATED_INITIALIZERS)
|
|
#define HAVE_DESIGNATED_INITIALIZERS \
|
|
(((GCC_VERSION >= 2007) || (__STDC_VERSION__ >= 199901L)) \
|
|
&& !defined(__cplusplus))
|
|
#endif
|
|
|
|
#if !defined(HAVE_DESIGNATED_UNION_INITIALIZERS)
|
|
#define HAVE_DESIGNATED_UNION_INITIALIZERS \
|
|
(((GCC_VERSION >= 2007) || (__STDC_VERSION__ >= 199901L)) \
|
|
&& (!defined(__cplusplus) || (GCC_VERSION >= 4007)))
|
|
#endif
|
|
|
|
#if HAVE_SYS_STAT_H
|
|
# include <sys/stat.h>
|
|
#endif
|
|
|
|
/* Test if something is a normal file. */
|
|
#ifndef S_ISREG
|
|
#define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
|
|
#endif
|
|
|
|
/* Test if something is a directory. */
|
|
#ifndef S_ISDIR
|
|
#define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
|
|
#endif
|
|
|
|
/* Test if something is a character special file. */
|
|
#ifndef S_ISCHR
|
|
#define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR)
|
|
#endif
|
|
|
|
/* Test if something is a block special file. */
|
|
#ifndef S_ISBLK
|
|
#define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK)
|
|
#endif
|
|
|
|
/* Test if something is a socket. */
|
|
#ifndef S_ISSOCK
|
|
# ifdef S_IFSOCK
|
|
# define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK)
|
|
# else
|
|
# define S_ISSOCK(m) 0
|
|
# endif
|
|
#endif
|
|
|
|
/* Test if something is a FIFO. */
|
|
#ifndef S_ISFIFO
|
|
# ifdef S_IFIFO
|
|
# define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO)
|
|
# else
|
|
# define S_ISFIFO(m) 0
|
|
# endif
|
|
#endif
|
|
|
|
/* Define well known filenos if the system does not define them. */
|
|
#ifndef STDIN_FILENO
|
|
# define STDIN_FILENO 0
|
|
#endif
|
|
#ifndef STDOUT_FILENO
|
|
# define STDOUT_FILENO 1
|
|
#endif
|
|
#ifndef STDERR_FILENO
|
|
# define STDERR_FILENO 2
|
|
#endif
|
|
|
|
/* Some systems have mkdir that takes a single argument. */
|
|
#ifdef MKDIR_TAKES_ONE_ARG
|
|
# define mkdir(a,b) mkdir (a)
|
|
#endif
|
|
|
|
#ifndef HAVE_KILL
|
|
# define kill(p,s) raise (s)
|
|
#endif
|
|
|
|
/* Provide a way to print an address via printf. */
|
|
#ifndef HOST_PTR_PRINTF
|
|
#define HOST_PTR_PRINTF "%p"
|
|
#endif /* ! HOST_PTR_PRINTF */
|
|
|
|
/* By default, colon separates directories in a path. */
|
|
#ifndef PATH_SEPARATOR
|
|
#define PATH_SEPARATOR ':'
|
|
#endif
|
|
|
|
/* Filename handling macros. */
|
|
#include "filenames.h"
|
|
|
|
/* These should be phased out in favor of IS_DIR_SEPARATOR, where possible. */
|
|
#ifndef DIR_SEPARATOR
|
|
# define DIR_SEPARATOR '/'
|
|
# ifdef HAVE_DOS_BASED_FILE_SYSTEM
|
|
# define DIR_SEPARATOR_2 '\\'
|
|
# endif
|
|
#endif
|
|
|
|
#if defined (ENABLE_PLUGIN) && defined (HAVE_DLFCN_H)
|
|
/* If plugin support is enabled, we could use libdl. */
|
|
#include <dlfcn.h>
|
|
#endif
|
|
|
|
/* Do not introduce a gmp.h dependency on the build system. */
|
|
#ifndef GENERATOR_FILE
|
|
#include <gmp.h>
|
|
#endif
|
|
|
|
/* Get libiberty declarations. */
|
|
#include "libiberty.h"
|
|
|
|
#undef FFS /* Some systems predefine this symbol; don't let it interfere. */
|
|
#undef FLOAT /* Likewise. */
|
|
#undef ABS /* Likewise. */
|
|
#undef PC /* Likewise. */
|
|
|
|
/* Provide a default for the HOST_BIT_BUCKET.
|
|
This suffices for POSIX-like hosts. */
|
|
|
|
#ifndef HOST_BIT_BUCKET
|
|
#define HOST_BIT_BUCKET "/dev/null"
|
|
#endif
|
|
|
|
#ifndef offsetof
|
|
#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *) 0)->MEMBER)
|
|
#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
|
|
|
|
/* Redefine abort to report an internal error w/o coredump, and
|
|
reporting the location of the error in the source file. */
|
|
extern void fancy_abort (const char *, int, const char *) ATTRIBUTE_NORETURN;
|
|
#define abort() fancy_abort (__FILE__, __LINE__, __FUNCTION__)
|
|
|
|
/* Use gcc_assert(EXPR) to test invariants. */
|
|
#if ENABLE_ASSERT_CHECKING
|
|
#define gcc_assert(EXPR) \
|
|
((void)(!(EXPR) ? fancy_abort (__FILE__, __LINE__, __FUNCTION__), 0 : 0))
|
|
#elif (GCC_VERSION >= 4005)
|
|
#define gcc_assert(EXPR) \
|
|
((void)(__builtin_expect (!(EXPR), 0) ? __builtin_unreachable (), 0 : 0))
|
|
#else
|
|
/* Include EXPR, so that unused variable warnings do not occur. */
|
|
#define gcc_assert(EXPR) ((void)(0 && (EXPR)))
|
|
#endif
|
|
|
|
#ifdef ENABLE_CHECKING
|
|
#define gcc_checking_assert(EXPR) gcc_assert (EXPR)
|
|
#else
|
|
#define gcc_checking_assert(EXPR) ((void)(0 && (EXPR)))
|
|
#endif
|
|
|
|
/* Use gcc_unreachable() to mark unreachable locations (like an
|
|
unreachable default case of a switch. Do not use gcc_assert(0). */
|
|
#if (GCC_VERSION >= 4005) && !ENABLE_ASSERT_CHECKING
|
|
#define gcc_unreachable() __builtin_unreachable ()
|
|
#else
|
|
#define gcc_unreachable() (fancy_abort (__FILE__, __LINE__, __FUNCTION__))
|
|
#endif
|
|
|
|
#if GCC_VERSION >= 3001
|
|
#define STATIC_CONSTANT_P(X) (__builtin_constant_p (X) && (X))
|
|
#else
|
|
#define STATIC_CONSTANT_P(X) (false && (X))
|
|
#endif
|
|
|
|
/* Until we can use C++11's static_assert. */
|
|
#define STATIC_ASSERT(X) \
|
|
typedef int assertion1[(X) ? 1 : -1] ATTRIBUTE_UNUSED
|
|
|
|
/* Provide a fake boolean type. We make no attempt to use the
|
|
C99 _Bool, as it may not be available in the bootstrap compiler,
|
|
and even if it is, it is liable to be buggy.
|
|
This must be after all inclusion of system headers, as some of
|
|
them will mess us up. */
|
|
|
|
#undef TRUE
|
|
#undef FALSE
|
|
|
|
#ifdef __cplusplus
|
|
/* Obsolete. */
|
|
# define TRUE true
|
|
# define FALSE false
|
|
#else /* !__cplusplus */
|
|
# undef bool
|
|
# undef true
|
|
# undef false
|
|
|
|
# define bool unsigned char
|
|
# define true 1
|
|
# define false 0
|
|
|
|
/* Obsolete. */
|
|
# define TRUE true
|
|
# define FALSE false
|
|
#endif /* !__cplusplus */
|
|
|
|
/* Some compilers do not allow the use of unsigned char in bitfields. */
|
|
#define BOOL_BITFIELD unsigned int
|
|
|
|
/* 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 defined(FLEX_SCANNER) || defined(YYBISON) || defined(YYBYACC)
|
|
/* Flex and bison use malloc and realloc. Yuk. Note that this means
|
|
really_call_* cannot be used in a .l or .y file. */
|
|
#define malloc xmalloc
|
|
#define realloc xrealloc
|
|
#endif
|
|
|
|
#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 calloc
|
|
#undef strdup
|
|
#pragma GCC poison calloc strdup
|
|
|
|
#if !defined(FLEX_SCANNER) && !defined(YYBISON)
|
|
#undef malloc
|
|
#undef realloc
|
|
#pragma GCC poison malloc realloc
|
|
#endif
|
|
|
|
/* The %m format should be used when GCC's main diagnostic functions
|
|
supporting %m are available, and xstrerror from libiberty
|
|
otherwise. */
|
|
#undef strerror
|
|
#pragma GCC poison strerror
|
|
|
|
/* loc_t is defined on some systems and too inviting for some
|
|
programmers to avoid. */
|
|
#undef loc_t
|
|
#pragma GCC poison loc_t
|
|
|
|
/* 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 MAX_CHAR_TYPE_SIZE \
|
|
WCHAR_UNSIGNED UNIQUE_SECTION SELECT_SECTION SELECT_RTX_SECTION \
|
|
ENCODE_SECTION_INFO STRIP_NAME_ENCODING ASM_GLOBALIZE_LABEL \
|
|
ASM_OUTPUT_MI_THUNK CONST_COSTS RTX_COSTS DEFAULT_RTX_COSTS \
|
|
ADDRESS_COST MACHINE_DEPENDENT_REORG ASM_FILE_START ASM_FILE_END \
|
|
ASM_SIMPLIFY_DWARF_ADDR INIT_TARGET_OPTABS INIT_SUBTARGET_OPTABS \
|
|
INIT_GOFAST_OPTABS MULSI3_LIBCALL MULDI3_LIBCALL DIVSI3_LIBCALL \
|
|
DIVDI3_LIBCALL UDIVSI3_LIBCALL UDIVDI3_LIBCALL MODSI3_LIBCALL \
|
|
MODDI3_LIBCALL UMODSI3_LIBCALL UMODDI3_LIBCALL BUILD_VA_LIST_TYPE \
|
|
PRETEND_OUTGOING_VARARGS_NAMED STRUCT_VALUE_INCOMING_REGNUM \
|
|
ASM_OUTPUT_SECTION_NAME PROMOTE_FUNCTION_ARGS PROMOTE_FUNCTION_MODE \
|
|
STRUCT_VALUE_INCOMING STRICT_ARGUMENT_NAMING \
|
|
PROMOTE_FUNCTION_RETURN PROMOTE_PROTOTYPES STRUCT_VALUE_REGNUM \
|
|
SETUP_INCOMING_VARARGS EXPAND_BUILTIN_SAVEREGS \
|
|
DEFAULT_SHORT_ENUMS SPLIT_COMPLEX_ARGS MD_ASM_CLOBBERS \
|
|
HANDLE_PRAGMA_REDEFINE_EXTNAME HANDLE_PRAGMA_EXTERN_PREFIX \
|
|
MUST_PASS_IN_STACK FUNCTION_ARG_PASS_BY_REFERENCE \
|
|
VECTOR_MODE_SUPPORTED_P TARGET_SUPPORTS_HIDDEN \
|
|
FUNCTION_ARG_PARTIAL_NREGS ASM_OUTPUT_DWARF_DTPREL \
|
|
ALLOCATE_INITIAL_VALUE LEGITIMIZE_ADDRESS FRAME_POINTER_REQUIRED \
|
|
CAN_ELIMINATE TRAMPOLINE_TEMPLATE INITIALIZE_TRAMPOLINE \
|
|
TRAMPOLINE_ADJUST_ADDRESS STATIC_CHAIN STATIC_CHAIN_INCOMING \
|
|
RETURN_POPS_ARGS UNITS_PER_SIMD_WORD OVERRIDE_OPTIONS \
|
|
OPTIMIZATION_OPTIONS CLASS_LIKELY_SPILLED_P \
|
|
USING_SJLJ_EXCEPTIONS TARGET_UNWIND_INFO \
|
|
LABEL_ALIGN_MAX_SKIP LOOP_ALIGN_MAX_SKIP \
|
|
LABEL_ALIGN_AFTER_BARRIER_MAX_SKIP JUMP_ALIGN_MAX_SKIP \
|
|
CAN_DEBUG_WITHOUT_FP UNLIKELY_EXECUTED_TEXT_SECTION_NAME \
|
|
HOT_TEXT_SECTION_NAME LEGITIMATE_CONSTANT_P ALWAYS_STRIP_DOTDOT \
|
|
OUTPUT_ADDR_CONST_EXTRA SMALL_REGISTER_CLASSES ASM_OUTPUT_IDENT \
|
|
ASM_BYTE_OP MEMBER_TYPE_FORCES_BLK
|
|
|
|
/* Target macros only used for code built for the target, that have
|
|
moved to libgcc-tm.h or have never been present elsewhere. */
|
|
#pragma GCC poison DECLARE_LIBRARY_RENAMES LIBGCC2_GNU_PREFIX \
|
|
MD_UNWIND_SUPPORT MD_FROB_UPDATE_CONTEXT ENABLE_EXECUTE_STACK \
|
|
REG_VALUE_IN_UNWIND_CONTEXT ASSUME_EXTENDED_UNWIND_CONTEXT
|
|
|
|
/* 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 CPP_PREDEFINES \
|
|
ASM_OUTPUT_EH_REGION_END ASM_OUTPUT_LABELREF_AS_INT SMALL_STACK \
|
|
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 \
|
|
TRADITIONAL_RETURN_FLOAT NO_BUILTIN_SIZE_TYPE \
|
|
NO_BUILTIN_PTRDIFF_TYPE NO_BUILTIN_WCHAR_TYPE NO_BUILTIN_WINT_TYPE \
|
|
BLOCK_PROFILER BLOCK_PROFILER_CODE FUNCTION_BLOCK_PROFILER \
|
|
FUNCTION_BLOCK_PROFILER_EXIT MACHINE_STATE_SAVE \
|
|
MACHINE_STATE_RESTORE SCCS_DIRECTIVE SECTION_ASM_OP BYTEORDER \
|
|
ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL HOST_WORDS_BIG_ENDIAN \
|
|
OBJC_PROLOGUE ALLOCATE_TRAMPOLINE HANDLE_PRAGMA ROUND_TYPE_SIZE \
|
|
ROUND_TYPE_SIZE_UNIT CONST_SECTION_ASM_OP CRT_GET_RFIB_TEXT \
|
|
DBX_LBRAC_FIRST DBX_OUTPUT_ENUM DBX_OUTPUT_SOURCE_FILENAME \
|
|
DBX_WORKING_DIRECTORY INSN_CACHE_DEPTH INSN_CACHE_SIZE \
|
|
INSN_CACHE_LINE_WIDTH INIT_SECTION_PREAMBLE NEED_ATEXIT ON_EXIT \
|
|
EXIT_BODY OBJECT_FORMAT_ROSE MULTIBYTE_CHARS MAP_CHARACTER \
|
|
LIBGCC_NEEDS_DOUBLE FINAL_PRESCAN_LABEL DEFAULT_CALLER_SAVES \
|
|
LOAD_ARGS_REVERSED MAX_INTEGER_COMPUTATION_MODE \
|
|
CONVERT_HARD_REGISTER_TO_SSA_P ASM_OUTPUT_MAIN_SOURCE_FILENAME \
|
|
FIRST_INSN_ADDRESS TEXT_SECTION SHARED_BSS_SECTION_ASM_OP \
|
|
PROMOTED_MODE EXPAND_BUILTIN_VA_END \
|
|
LINKER_DOES_NOT_WORK_WITH_DWARF2 FUNCTION_ARG_KEEP_AS_REFERENCE \
|
|
GIV_SORT_CRITERION MAX_LONG_TYPE_SIZE MAX_LONG_DOUBLE_TYPE_SIZE \
|
|
MAX_WCHAR_TYPE_SIZE SHARED_SECTION_ASM_OP INTEGRATE_THRESHOLD \
|
|
FINAL_REG_PARM_STACK_SPACE MAYBE_REG_PARM_STACK_SPACE \
|
|
TRADITIONAL_PIPELINE_INTERFACE DFA_PIPELINE_INTERFACE \
|
|
DBX_OUTPUT_STANDARD_TYPES BUILTIN_SETJMP_FRAME_VALUE \
|
|
SUNOS4_SHARED_LIBRARIES PROMOTE_FOR_CALL_ONLY \
|
|
SPACE_AFTER_L_OPTION NO_RECURSIVE_FUNCTION_CSE \
|
|
DEFAULT_MAIN_RETURN TARGET_MEM_FUNCTIONS EXPAND_BUILTIN_VA_ARG \
|
|
COLLECT_PARSE_FLAG DWARF2_GENERATE_TEXT_SECTION_LABEL WINNING_GDB \
|
|
ASM_OUTPUT_FILENAME ASM_OUTPUT_SOURCE_LINE FILE_NAME_JOINER \
|
|
GDB_INV_REF_REGPARM_STABS_LETTER DBX_MEMPARM_STABS_LETTER \
|
|
PUT_SDB_SRC_FILE STABS_GCC_MARKER DBX_OUTPUT_FUNCTION_END \
|
|
DBX_OUTPUT_GCC_MARKER DBX_FINISH_SYMBOL SDB_GENERATE_FAKE \
|
|
NON_SAVING_SETJMP TARGET_LATE_RTL_PROLOGUE_EPILOGUE \
|
|
CASE_DROPS_THROUGH TARGET_BELL TARGET_BS TARGET_CR TARGET_DIGIT0 \
|
|
TARGET_ESC TARGET_FF TARGET_NEWLINE TARGET_TAB TARGET_VT \
|
|
LINK_LIBGCC_SPECIAL DONT_ACCESS_GBLS_AFTER_EPILOGUE \
|
|
TARGET_OPTIONS TARGET_SWITCHES EXTRA_CC_MODES FINALIZE_PIC \
|
|
PREDICATE_CODES SPECIAL_MODE_PREDICATES UNALIGNED_WORD_ASM_OP \
|
|
EXTRA_SECTIONS EXTRA_SECTION_FUNCTIONS READONLY_DATA_SECTION \
|
|
TARGET_ASM_EXCEPTION_SECTION TARGET_ASM_EH_FRAME_SECTION \
|
|
SMALL_ARG_MAX ASM_OUTPUT_SHARED_BSS ASM_OUTPUT_SHARED_COMMON \
|
|
ASM_OUTPUT_SHARED_LOCAL ASM_MAKE_LABEL_LINKONCE \
|
|
STACK_CHECK_PROBE_INTERVAL STACK_CHECK_PROBE_LOAD \
|
|
ORDER_REGS_FOR_LOCAL_ALLOC FUNCTION_OUTGOING_VALUE \
|
|
ASM_DECLARE_CONSTANT_NAME MODIFY_TARGET_NAME SWITCHES_NEED_SPACES \
|
|
SWITCH_CURTAILS_COMPILATION SWITCH_TAKES_ARG WORD_SWITCH_TAKES_ARG \
|
|
TARGET_OPTION_TRANSLATE_TABLE HANDLE_PRAGMA_PACK_PUSH_POP \
|
|
HANDLE_SYSV_PRAGMA HANDLE_PRAGMA_WEAK CONDITIONAL_REGISTER_USAGE \
|
|
FUNCTION_ARG_BOUNDARY MUST_USE_SJLJ_EXCEPTIONS US_SOFTWARE_GOFAST \
|
|
USING_SVR4_H SVR4_ASM_SPEC FUNCTION_ARG FUNCTION_ARG_ADVANCE \
|
|
FUNCTION_INCOMING_ARG IRA_COVER_CLASSES TARGET_VERSION \
|
|
MACHINE_TYPE TARGET_HAS_TARGETCM ASM_OUTPUT_BSS \
|
|
SETJMP_VIA_SAVE_AREA FORBIDDEN_INC_DEC_CLASSES \
|
|
PREFERRED_OUTPUT_RELOAD_CLASS SYSTEM_INCLUDE_DIR \
|
|
STANDARD_INCLUDE_DIR STANDARD_INCLUDE_COMPONENT \
|
|
LINK_ELIMINATE_DUPLICATE_LDIRECTORIES MIPS_DEBUGGING_INFO \
|
|
IDENT_ASM_OP ALL_COP_ADDITIONAL_REGISTER_NAMES DBX_OUTPUT_LBRAC \
|
|
DBX_OUTPUT_NFUN DBX_OUTPUT_RBRAC RANGE_TEST_NON_SHORT_CIRCUIT \
|
|
REAL_VALUE_TRUNCATE REVERSE_CONDEXEC_PREDICATES_P \
|
|
TARGET_ALIGN_ANON_BITFIELDS TARGET_NARROW_VOLATILE_BITFIELDS \
|
|
IDENT_ASM_OP UNALIGNED_SHORT_ASM_OP UNALIGNED_INT_ASM_OP \
|
|
UNALIGNED_LONG_ASM_OP UNALIGNED_DOUBLE_INT_ASM_OP \
|
|
USE_COMMON_FOR_ONE_ONLY IFCVT_EXTRA_FIELDS IFCVT_INIT_EXTRA_FIELDS \
|
|
CASE_USE_BIT_TESTS FIXUNS_TRUNC_LIKE_FIX_TRUNC \
|
|
GO_IF_MODE_DEPENDENT_ADDRESS DELAY_SLOTS_FOR_EPILOGUE \
|
|
ELIGIBLE_FOR_EPILOGUE_DELAY TARGET_C99_FUNCTIONS TARGET_HAS_SINCOS \
|
|
REG_CLASS_FROM_LETTER CONST_OK_FOR_LETTER_P \
|
|
CONST_DOUBLE_OK_FOR_LETTER_P EXTRA_CONSTRAINT \
|
|
REG_CLASS_FROM_CONSTRAINT REG_CLASS_FOR_CONSTRAINT \
|
|
EXTRA_CONSTRAINT_STR EXTRA_MEMORY_CONSTRAINT \
|
|
EXTRA_ADDRESS_CONSTRAINT CONST_DOUBLE_OK_FOR_CONSTRAINT_P \
|
|
CALLER_SAVE_PROFITABLE
|
|
|
|
/* Hooks that are no longer used. */
|
|
#pragma GCC poison LANG_HOOKS_FUNCTION_MARK LANG_HOOKS_FUNCTION_FREE \
|
|
LANG_HOOKS_MARK_TREE LANG_HOOKS_INSERT_DEFAULT_ATTRIBUTES \
|
|
LANG_HOOKS_TREE_INLINING_ESTIMATE_NUM_INSNS \
|
|
LANG_HOOKS_PUSHLEVEL LANG_HOOKS_SET_BLOCK \
|
|
LANG_HOOKS_MAYBE_BUILD_CLEANUP LANG_HOOKS_UPDATE_DECL_AFTER_SAVING \
|
|
LANG_HOOKS_POPLEVEL LANG_HOOKS_TRUTHVALUE_CONVERSION \
|
|
TARGET_PROMOTE_FUNCTION_ARGS TARGET_PROMOTE_FUNCTION_RETURN \
|
|
LANG_HOOKS_MISSING_ARGUMENT LANG_HOOKS_HASH_TYPES \
|
|
TARGET_HANDLE_OFAST TARGET_OPTION_OPTIMIZATION \
|
|
TARGET_IRA_COVER_CLASSES TARGET_HELP \
|
|
TARGET_HANDLE_PRAGMA_EXTERN_PREFIX \
|
|
TARGET_VECTORIZE_BUILTIN_MUL_WIDEN_EVEN \
|
|
TARGET_VECTORIZE_BUILTIN_MUL_WIDEN_ODD \
|
|
|
|
/* Arrays that were deleted in favor of a functional interface. */
|
|
#pragma GCC poison built_in_decls implicit_built_in_decls
|
|
|
|
/* Hooks into libgcc2. */
|
|
#pragma GCC poison LIBGCC2_DOUBLE_TYPE_SIZE LIBGCC2_WORDS_BIG_ENDIAN \
|
|
LIBGCC2_FLOAT_WORDS_BIG_ENDIAN
|
|
|
|
/* Miscellaneous macros that are no longer used. */
|
|
#pragma GCC poison USE_MAPPED_LOCATION GET_ENVIRONMENT
|
|
|
|
/* Libiberty macros that are no longer used in GCC. */
|
|
#undef ANSI_PROTOTYPES
|
|
#undef PTR_CONST
|
|
#undef LONG_DOUBLE
|
|
#undef VPARAMS
|
|
#undef VA_OPEN
|
|
#undef VA_FIXEDARG
|
|
#undef VA_CLOSE
|
|
#undef VA_START
|
|
#pragma GCC poison ANSI_PROTOTYPES PTR_CONST LONG_DOUBLE VPARAMS VA_OPEN \
|
|
VA_FIXEDARG VA_CLOSE VA_START
|
|
#endif /* IN_GCC */
|
|
|
|
/* Front ends should never have to include middle-end headers. Enforce
|
|
this by poisoning the header double-include protection defines. */
|
|
#ifdef IN_GCC_FRONTEND
|
|
#pragma GCC poison GCC_RTL_H GCC_EXCEPT_H GCC_EXPR_H
|
|
#endif
|
|
|
|
/* 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 */
|
|
|
|
/* This macro allows casting away const-ness to pass -Wcast-qual
|
|
warnings. DO NOT USE THIS UNLESS YOU REALLY HAVE TO! It should
|
|
only be used in certain specific cases. One valid case is where
|
|
the C standard definitions or prototypes force you to. E.g. if you
|
|
need to free a const object, or if you pass a const string to
|
|
execv, et al. Another valid use would be in an allocation function
|
|
that creates const objects that need to be initialized. In some
|
|
cases we have non-const functions that return the argument
|
|
(e.g. next_nonnote_insn). Rather than create const shadow
|
|
functions, we can cast away const-ness in calling these interfaces
|
|
if we're careful to verify that the called function does indeed not
|
|
modify its argument and the return value is only used in a const
|
|
context. (This can be somewhat dangerous as these assumptions can
|
|
change after the fact). Beyond these uses, most other cases of
|
|
using this macro should be viewed with extreme caution. */
|
|
|
|
#ifdef __cplusplus
|
|
#define CONST_CAST2(TOTYPE,FROMTYPE,X) (const_cast<TOTYPE> (X))
|
|
#else
|
|
#if defined(__GNUC__) && GCC_VERSION > 4000
|
|
/* GCC 4.0.x has a bug where it may ICE on this expression,
|
|
so does GCC 3.4.x (PR17436). */
|
|
#define CONST_CAST2(TOTYPE,FROMTYPE,X) ((__extension__(union {FROMTYPE _q; TOTYPE _nq;})(X))._nq)
|
|
#elif defined(__GNUC__)
|
|
static inline char *
|
|
helper_const_non_const_cast (const char *p)
|
|
{
|
|
union {
|
|
const char *const_c;
|
|
char *c;
|
|
} val;
|
|
val.const_c = p;
|
|
return val.c;
|
|
}
|
|
|
|
#define CONST_CAST2(TOTYPE,FROMTYPE,X) \
|
|
((TOTYPE) helper_const_non_const_cast ((const char *) (FROMTYPE) (X)))
|
|
#else
|
|
#define CONST_CAST2(TOTYPE,FROMTYPE,X) ((TOTYPE)(FROMTYPE)(X))
|
|
#endif
|
|
#endif
|
|
#define CONST_CAST(TYPE,X) CONST_CAST2 (TYPE, const TYPE, (X))
|
|
#define CONST_CAST_TREE(X) CONST_CAST (union tree_node *, (X))
|
|
#define CONST_CAST_RTX(X) CONST_CAST (struct rtx_def *, (X))
|
|
#define CONST_CAST_BB(X) CONST_CAST (struct basic_block_def *, (X))
|
|
#define CONST_CAST_GIMPLE(X) CONST_CAST (struct gimple_statement_base *, (X))
|
|
|
|
/* Activate certain diagnostics as warnings (not errors via the
|
|
-Werror flag). */
|
|
#if GCC_VERSION >= 4003
|
|
/* If asserts are disabled, activate -Wuninitialized as a warning (not
|
|
an error/-Werror). */
|
|
#ifndef ENABLE_ASSERT_CHECKING
|
|
#pragma GCC diagnostic warning "-Wuninitialized"
|
|
#endif
|
|
#endif
|
|
|
|
#ifdef ENABLE_VALGRIND_ANNOTATIONS
|
|
# ifdef HAVE_VALGRIND_MEMCHECK_H
|
|
# include <valgrind/memcheck.h>
|
|
# elif defined HAVE_MEMCHECK_H
|
|
# include <memcheck.h>
|
|
# else
|
|
# include <valgrind.h>
|
|
# endif
|
|
/* Compatibility macros to let valgrind 3.1 work. */
|
|
# ifndef VALGRIND_MAKE_MEM_NOACCESS
|
|
# define VALGRIND_MAKE_MEM_NOACCESS VALGRIND_MAKE_NOACCESS
|
|
# endif
|
|
# ifndef VALGRIND_MAKE_MEM_DEFINED
|
|
# define VALGRIND_MAKE_MEM_DEFINED VALGRIND_MAKE_READABLE
|
|
# endif
|
|
# ifndef VALGRIND_MAKE_MEM_UNDEFINED
|
|
# define VALGRIND_MAKE_MEM_UNDEFINED VALGRIND_MAKE_WRITABLE
|
|
# endif
|
|
#else
|
|
/* Avoid #ifdef:s when we can help it. */
|
|
#define VALGRIND_DISCARD(x)
|
|
#define VALGRIND_MALLOCLIKE_BLOCK(w,x,y,z)
|
|
#define VALGRIND_FREELIKE_BLOCK(x,y)
|
|
#endif
|
|
|
|
/* In LTO -fwhole-program build we still want to keep the debug functions available
|
|
for debugger. Mark them as used to prevent removal. */
|
|
#if (GCC_VERSION > 4000)
|
|
#define DEBUG_FUNCTION __attribute__ ((__used__))
|
|
#define DEBUG_VARIABLE __attribute__ ((__used__))
|
|
#else
|
|
#define DEBUG_FUNCTION
|
|
#define DEBUG_VARIABLE
|
|
#endif
|
|
|
|
/* General macro to extract bit Y of X. */
|
|
#define TEST_BIT(X, Y) (((X) >> (Y)) & 1)
|
|
|
|
/* Get definitions of HOST_WIDE_INT. */
|
|
#include "hwint.h"
|
|
|
|
#endif /* ! GCC_SYSTEM_H */
|