| /* Get common system includes and various definitions and declarations based |
| on autoconf macros. |
| Copyright (C) 1998-2022 Free Software Foundation, Inc. |
| |
| This file is part of GCC. |
| |
| 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 3, or (at your option) any later |
| version. |
| |
| 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 GCC; see the file COPYING3. If not see |
| <http://www.gnu.org/licenses/>. */ |
| |
| |
| #ifndef LIBCPP_SYSTEM_H |
| #define LIBCPP_SYSTEM_H |
| |
| /* We must include stdarg.h before stdio.h. */ |
| #include <stdarg.h> |
| |
| #ifdef HAVE_STDDEF_H |
| # include <stddef.h> |
| #endif |
| #ifdef HAVE_STDINT_H |
| # include <stdint.h> |
| #endif |
| #ifdef HAVE_INTTYPES_H |
| # include <inttypes.h> |
| #endif |
| |
| #include <stdio.h> |
| |
| #ifdef __cplusplus |
| #include <new> |
| #endif |
| |
| /* Define a generic NULL if one hasn't already been defined. */ |
| #ifndef NULL |
| #define NULL 0 |
| #endif |
| |
| /* Use the unlocked open routines from libiberty. */ |
| |
| /* Some of these are #define on some systems, e.g. on AIX to redirect |
| the names to 64bit capable functions for LARGE_FILES support. These |
| redefs are pointless here so we can override them. */ |
| |
| #undef fopen |
| #undef freopen |
| |
| #define fopen(PATH,MODE) fopen_unlocked(PATH,MODE) |
| #define fdopen(FILDES,MODE) fdopen_unlocked(FILDES,MODE) |
| #define freopen(PATH,MODE,STREAM) freopen_unlocked(PATH,MODE,STREAM) |
| |
| /* The compiler is not a multi-threaded application and therefore we |
| 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 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, fwrite_unlocked, and fprintf_unlocked are |
| extensions and need to be prototyped by hand (since we do not |
| define _GNU_SOURCE). */ |
| |
| #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_PUTCHAR_UNLOCKED |
| # undef putchar |
| # define putchar(C) putchar_unlocked (C) |
| # endif |
| # ifdef HAVE_GETC_UNLOCKED |
| # undef getc |
| # define getc(Stream) getc_unlocked (Stream) |
| # endif |
| # ifdef HAVE_GETCHAR_UNLOCKED |
| # undef getchar |
| # define getchar() getchar_unlocked () |
| # endif |
| # ifdef HAVE_FPUTC_UNLOCKED |
| # undef fputc |
| # define fputc(C, Stream) fputc_unlocked (C, Stream) |
| # endif |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| # ifdef HAVE_CLEARERR_UNLOCKED |
| # undef clearerr |
| # define clearerr(Stream) clearerr_unlocked (Stream) |
| # if defined (HAVE_DECL_CLEARERR_UNLOCKED) && !HAVE_DECL_CLEARERR_UNLOCKED |
| extern void clearerr_unlocked (FILE *); |
| # endif |
| # endif |
| # ifdef HAVE_FEOF_UNLOCKED |
| # undef feof |
| # define feof(Stream) feof_unlocked (Stream) |
| # if defined (HAVE_DECL_FEOF_UNLOCKED) && !HAVE_DECL_FEOF_UNLOCKED |
| extern int feof_unlocked (FILE *); |
| # endif |
| # endif |
| # ifdef HAVE_FILENO_UNLOCKED |
| # undef fileno |
| # define fileno(Stream) fileno_unlocked (Stream) |
| # if defined (HAVE_DECL_FILENO_UNLOCKED) && !HAVE_DECL_FILENO_UNLOCKED |
| extern int fileno_unlocked (FILE *); |
| # endif |
| # endif |
| # ifdef HAVE_FFLUSH_UNLOCKED |
| # undef fflush |
| # define fflush(Stream) fflush_unlocked (Stream) |
| # if defined (HAVE_DECL_FFLUSH_UNLOCKED) && !HAVE_DECL_FFLUSH_UNLOCKED |
| extern int fflush_unlocked (FILE *); |
| # endif |
| # endif |
| # ifdef HAVE_FGETC_UNLOCKED |
| # undef fgetc |
| # define fgetc(Stream) fgetc_unlocked (Stream) |
| # if defined (HAVE_DECL_FGETC_UNLOCKED) && !HAVE_DECL_FGETC_UNLOCKED |
| extern int fgetc_unlocked (FILE *); |
| # endif |
| # endif |
| # ifdef HAVE_FGETS_UNLOCKED |
| # undef fgets |
| # define fgets(S, n, Stream) fgets_unlocked (S, n, Stream) |
| # if defined (HAVE_DECL_FGETS_UNLOCKED) && !HAVE_DECL_FGETS_UNLOCKED |
| extern char *fgets_unlocked (char *, int, FILE *); |
| # endif |
| # 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 (const char *, FILE *); |
| # endif |
| # endif |
| # ifdef HAVE_FERROR_UNLOCKED |
| # undef ferror |
| # define ferror(Stream) ferror_unlocked (Stream) |
| # if defined (HAVE_DECL_FERROR_UNLOCKED) && !HAVE_DECL_FERROR_UNLOCKED |
| extern int ferror_unlocked (FILE *); |
| # endif |
| # endif |
| # ifdef HAVE_FREAD_UNLOCKED |
| # undef fread |
| # define fread(Ptr, Size, N, Stream) fread_unlocked (Ptr, Size, N, Stream) |
| # if defined (HAVE_DECL_FREAD_UNLOCKED) && !HAVE_DECL_FREAD_UNLOCKED |
| extern size_t fread_unlocked (void *, size_t, size_t, 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 size_t fwrite_unlocked (const void *, 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 (FILE *, const char *, ...); |
| # endif |
| # endif |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif |
| |
| /* ??? Glibc's fwrite/fread_unlocked macros cause |
| "warning: signed and unsigned type in conditional expression". */ |
| #undef fread_unlocked |
| #undef fwrite_unlocked |
| |
| #include <sys/types.h> |
| #include <errno.h> |
| |
| #if !defined (errno) && defined (HAVE_DECL_ERRNO) && !HAVE_DECL_ERRNO |
| extern int errno; |
| #endif |
| |
| /* Some of glibc's string inlines cause warnings. Plus we'd rather |
| rely on (and therefore test) GCC's string builtins. */ |
| #define __NO_STRING_INLINES |
| |
| #ifdef STRING_WITH_STRINGS |
| # include <string.h> |
| # include <strings.h> |
| #else |
| # ifdef HAVE_STRING_H |
| # include <string.h> |
| # else |
| # ifdef HAVE_STRINGS_H |
| # include <strings.h> |
| # endif |
| # endif |
| #endif |
| |
| #ifdef HAVE_STDLIB_H |
| # include <stdlib.h> |
| #endif |
| |
| #ifdef HAVE_UNISTD_H |
| # include <unistd.h> |
| #endif |
| |
| #if HAVE_LIMITS_H |
| # include <limits.h> |
| #endif |
| |
| /* Infrastructure for defining missing _MAX and _MIN macros. Note that |
| macros defined with these cannot be used in #if. */ |
| |
| /* The extra casts work around common compiler bugs. */ |
| #define INTTYPE_SIGNED(t) (! ((t) 0 < (t) -1)) |
| /* The outer cast is needed to work around a bug in Cray C 5.0.3.0. |
| It is necessary at least when t == time_t. */ |
| #define INTTYPE_MINIMUM(t) ((t) (INTTYPE_SIGNED (t) \ |
| ? (t) 1 << (sizeof (t) * CHAR_BIT - 1) : (t) 0)) |
| #define INTTYPE_MAXIMUM(t) ((t) (~ (t) 0 - INTTYPE_MINIMUM (t))) |
| |
| /* Use that infrastructure to provide a few constants. */ |
| #ifndef UCHAR_MAX |
| # define UCHAR_MAX INTTYPE_MAXIMUM (unsigned char) |
| #endif |
| |
| #ifdef TIME_WITH_SYS_TIME |
| # include <sys/time.h> |
| # include <time.h> |
| #else |
| # if HAVE_SYS_TIME_H |
| # include <sys/time.h> |
| # else |
| # ifdef HAVE_TIME_H |
| # include <time.h> |
| # endif |
| # endif |
| #endif |
| |
| #ifdef HAVE_FCNTL_H |
| # include <fcntl.h> |
| #else |
| # ifdef HAVE_SYS_FILE_H |
| # include <sys/file.h> |
| # endif |
| #endif |
| |
| #ifdef HAVE_LOCALE_H |
| # include <locale.h> |
| #endif |
| |
| #ifdef HAVE_LANGINFO_CODESET |
| # include <langinfo.h> |
| #endif |
| |
| #ifndef HAVE_SETLOCALE |
| # define setlocale(category, locale) (locale) |
| #endif |
| |
| #ifdef ENABLE_NLS |
| #include <libintl.h> |
| #else |
| /* Stubs. */ |
| # undef dgettext |
| # define dgettext(package, msgid) (msgid) |
| #endif |
| |
| #ifndef _ |
| # define _(msgid) dgettext (PACKAGE, msgid) |
| #endif |
| |
| #ifndef N_ |
| # define N_(msgid) msgid |
| #endif |
| |
| /* Some systems define these in, e.g., param.h. We undefine these names |
| here to avoid the warnings. We prefer to use our definitions since we |
| know they are correct. */ |
| |
| #undef MIN |
| #undef MAX |
| #define MIN(X,Y) ((X) < (Y) ? (X) : (Y)) |
| #define MAX(X,Y) ((X) > (Y) ? (X) : (Y)) |
| |
| /* The HAVE_DECL_* macros are three-state, undefined, 0 or 1. If they |
| are defined to 0 then we must provide the relevant declaration |
| here. These checks will be in the undefined state while configure |
| is running so be careful to test "defined (HAVE_DECL_*)". */ |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| #if defined (HAVE_DECL_ABORT) && !HAVE_DECL_ABORT |
| extern void abort (void); |
| #endif |
| |
| #ifdef __cplusplus |
| } |
| #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 |
| |
| /* Approximate O_NOCTTY and O_BINARY. */ |
| #ifndef O_NOCTTY |
| #define O_NOCTTY 0 |
| #endif |
| #ifndef O_BINARY |
| # define O_BINARY 0 |
| #endif |
| |
| /* Filename handling macros. */ |
| #include "filenames.h" |
| |
| /* Get libiberty declarations. */ |
| #include "libiberty.h" |
| #include "safe-ctype.h" |
| |
| /* 1 if we have C99 designated initializers. |
| |
| ??? C99 designated initializers are not supported by most C++ |
| compilers, including G++. -- gdr, 2005-05-18 */ |
| #if !defined(HAVE_DESIGNATED_INITIALIZERS) |
| #ifdef __cplusplus |
| #define HAVE_DESIGNATED_INITIALIZERS 0 |
| #else |
| #define HAVE_DESIGNATED_INITIALIZERS \ |
| ((GCC_VERSION >= 2007) || (__STDC_VERSION__ >= 199901L)) |
| #endif |
| #endif |
| |
| #ifndef offsetof |
| #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *) 0)->MEMBER) |
| #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 |
| |
| #if CHECKING_P |
| #define gcc_checking_assert(EXPR) gcc_assert (EXPR) |
| #else |
| /* N.B.: in release build EXPR is not evaluated. */ |
| #define gcc_checking_assert(EXPR) ((void)(0 && (EXPR))) |
| #endif |
| |
| #ifdef __has_cpp_attribute |
| # if __has_cpp_attribute(likely) |
| # define ATTR_LIKELY [[likely]] |
| # elif __has_cpp_attribute(__likely__) |
| # define ATTR_LIKELY [[__likely__]] |
| # else |
| # define ATTR_LIKELY |
| # endif |
| #else |
| # define ATTR_LIKELY |
| #endif |
| |
| /* Poison identifiers we do not want to use. */ |
| #if (GCC_VERSION >= 3000) |
| #undef calloc |
| #undef strdup |
| #undef malloc |
| #undef realloc |
| #pragma GCC poison calloc strdup |
| #pragma GCC poison malloc realloc |
| |
| /* 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 |
| |
| /* 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 /* ! LIBCPP_SYSTEM_H */ |