/* Get common system includes and various definitions and declarations based
on autoconf macros.
- Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
+ Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
-This file is part of GNU CC.
+This file is part of GCC.
-GNU CC is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 2, or (at your option) any later
+version.
-GNU CC is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
You should have received a copy of the GNU General Public License
-along with GNU CC; see the file COPYING. If not, write to
-the Free Software Foundation, 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
+along with GCC; see the file COPYING. If not, write to the Free
+Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+02111-1307, USA. */
-#ifndef __GCC_SYSTEM_H__
-#define __GCC_SYSTEM_H__
+#ifndef GCC_SYSTEM_H
+#define GCC_SYSTEM_H
/* This is the location of the online document giving information how
to report bugs. If you change this string, also check for strings
not under control of the preprocessor. */
#define GCCBUGURL "<URL:http://www.gnu.org/software/gcc/bugs.html>"
-/* We must include stdarg.h/varargs.h before stdio.h. */
+/* We must include stdarg.h/varargs.h before stdio.h. */
#ifdef ANSI_PROTOTYPES
#include <stdarg.h>
#else
#endif
/* The compiler is not a multi-threaded application and therefore we
- do not have to use the locking functions.
+ do not have to use the locking functions. In fact, using the locking
+ functions can cause the compiler to be significantly slower under
+ I/O bound conditions (such as -g -O0 on very large source files).
- HAVE_DECL_PUTC_UNLOCKED actually indicates whether or not the IO
+ HAVE_DECL_PUTC_UNLOCKED actually indicates whether or not the stdio
code is multi-thread safe by default. If it is set to 0, then do
not worry about using the _unlocked functions.
- fputs_unlocked is an extension and needs to be prototyped specially. */
+ fputs_unlocked, fwrite_unlocked, and fprintf_unlocked are
+ extensions and need to be prototyped by hand (since we do not
+ define _GNU_SOURCE). */
-#if defined HAVE_PUTC_UNLOCKED && (defined (HAVE_DECL_PUTC_UNLOCKED) && HAVE_DECL_PUTC_UNLOCKED)
-# undef putc
-# define putc(C, Stream) putc_unlocked (C, Stream)
-#endif
-#if defined HAVE_FPUTC_UNLOCKED && (defined (HAVE_DECL_PUTC_UNLOCKED) && HAVE_DECL_PUTC_UNLOCKED)
-# undef fputc
-# define fputc(C, Stream) fputc_unlocked (C, Stream)
-#endif
-#if defined HAVE_FPUTS_UNLOCKED && (defined (HAVE_DECL_PUTC_UNLOCKED) && HAVE_DECL_PUTC_UNLOCKED)
-# undef fputs
-# define fputs(String, Stream) fputs_unlocked (String, Stream)
-# if defined (HAVE_DECL_FPUTS_UNLOCKED) && !HAVE_DECL_FPUTS_UNLOCKED
+#if defined HAVE_DECL_PUTC_UNLOCKED && HAVE_DECL_PUTC_UNLOCKED
+
+# ifdef HAVE_PUTC_UNLOCKED
+# undef putc
+# define putc(C, Stream) putc_unlocked (C, Stream)
+# endif
+# ifdef HAVE_FPUTC_UNLOCKED
+# undef fputc
+# define fputc(C, Stream) fputc_unlocked (C, Stream)
+# endif
+
+# ifdef HAVE_FPUTS_UNLOCKED
+# undef fputs
+# define fputs(String, Stream) fputs_unlocked (String, Stream)
+# if defined (HAVE_DECL_FPUTS_UNLOCKED) && !HAVE_DECL_FPUTS_UNLOCKED
extern int fputs_unlocked PARAMS ((const char *, FILE *));
+# endif
+# endif
+# ifdef HAVE_FWRITE_UNLOCKED
+# undef fwrite
+# define fwrite(Ptr, Size, N, Stream) fwrite_unlocked (Ptr, Size, N, Stream)
+# if defined (HAVE_DECL_FWRITE_UNLOCKED) && !HAVE_DECL_FWRITE_UNLOCKED
+extern int fwrite_unlocked PARAMS ((const PTR, size_t, size_t, FILE *));
+# endif
# endif
+# ifdef HAVE_FPRINTF_UNLOCKED
+# undef fprintf
+/* We can't use a function-like macro here because we don't know if
+ we have varargs macros. */
+# define fprintf fprintf_unlocked
+# if defined (HAVE_DECL_FPRINTF_UNLOCKED) && !HAVE_DECL_FPRINTF_UNLOCKED
+extern int fprintf_unlocked PARAMS ((FILE *, const char *, ...));
+# endif
+# endif
+
#endif
/* There are an extraordinary number of issues with <ctype.h>.
replacement instead. */
#include <safe-ctype.h>
-/* Define a default escape character; it's different for EBCDIC. */
-#ifndef TARGET_ESC
-#define TARGET_ESC 033
-#endif
-
#include <sys/types.h>
#include <errno.h>
-#ifndef errno
+#if !defined (errno) && defined (HAVE_DECL_ERRNO) && !HAVE_DECL_ERRNO
extern int errno;
#endif
#ifdef HAVE_SYS_PARAM_H
# include <sys/param.h>
+/* We use this identifier later and it appears in some vendor param.h's. */
+# undef PREFETCH
#endif
#if HAVE_LIMITS_H
/* Get definitions of HOST_WIDE_INT and HOST_WIDEST_INT. */
#include "hwint.h"
+/* A macro to determine whether a VALUE lies inclusively within a
+ certain range without evaluating the VALUE more than once. This
+ macro won't warn if the VALUE is unsigned and the LOWER bound is
+ zero, as it would e.g. with "VALUE >= 0 && ...". Note the LOWER
+ bound *is* evaluated twice, and LOWER must not be greater than
+ UPPER. However the bounds themselves can be either positive or
+ negative. */
+#define IN_RANGE(VALUE, LOWER, UPPER) \
+ ((unsigned HOST_WIDE_INT) ((VALUE) - (LOWER)) <= ((UPPER) - (LOWER)))
+
/* Infrastructure for defining missing _MAX and _MIN macros. Note that
macros defined with these cannot be used in #if. */
here. These checks will be in the undefined state while configure
is running so be careful to test "defined (HAVE_DECL_*)". */
-#ifndef bcopy
-# ifdef HAVE_BCOPY
-# if defined (HAVE_DECL_BCOPY) && !HAVE_DECL_BCOPY
-extern void bcopy PARAMS ((const PTR, PTR, size_t));
-# endif
-# else /* ! HAVE_BCOPY */
-# define bcopy(src,dst,len) memmove((dst),(src),(len))
-# endif
-#endif
-
#if defined (HAVE_DECL_ATOF) && !HAVE_DECL_ATOF
extern double atof PARAMS ((const char *));
#endif
#endif
/* If the system doesn't provide strsignal, we get it defined in
- libiberty but no declaration is supplied. */
+ libiberty but no declaration is supplied. */
#ifndef HAVE_STRSIGNAL
# ifndef strsignal
extern const char *strsignal PARAMS ((int));
#endif
/* HAVE_VOLATILE only refers to the stage1 compiler. We also check
- __STDC__ and assume gcc sets it and has volatile in stage >=2. */
+ __STDC__ and assume gcc sets it and has volatile in stage >=2. */
#if !defined(HAVE_VOLATILE) && !defined(__STDC__) && !defined(volatile)
#define volatile
#endif
# define STDERR_FILENO 2
#endif
-/* Some systems have mkdir that takes a single argument. */
+/* Some systems have mkdir that takes a single argument. */
#ifdef MKDIR_TAKES_ONE_ARG
# define mkdir(a,b) mkdir(a)
#endif
(IS_DIR_SEPARATOR ((STR)[0]) || (STR)[0] == '$')
#endif
-/* Get libiberty declarations. */
+/* Get libiberty declarations. */
#include "libiberty.h"
#include "symcat.h"
#endif
#ifndef offsetof
-#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
+#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *) 0)->MEMBER)
#endif
/* Traditional C cannot initialize union members of structs. Provide
a macro which expands appropriately to handle it. This only works
- if you intend to initalize the union member to zero since it relies
+ 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}
#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 is dead last because various system headers might
- mess us up. */
+ 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 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 \
+ TRADITIONAL_RETURN_FLOAT
+
#endif /* IN_GCC */
-/* Note: not all uses of `bcopy' and `index' (esp. variable names)
- have been eliminated. */
+/* 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 bzero bcmp rindex
+ #pragma GCC poison bcopy bzero bcmp rindex
#endif /* GCC >= 3.0 */
-#endif /* __GCC_SYSTEM_H__ */
+#endif /* ! GCC_SYSTEM_H */
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