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- /* Copyright (C) 1991,92,93,95,96,97,98,99,2000,2001 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
- The GNU C Library 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
- Lesser General Public License for more details.
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, write to the Free
- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
- #ifndef _LIBC_INTERNAL_H
- #define _LIBC_INTERNAL_H 1
- #include <features.h>
- /* Some nice features only work properly with ELF */
- #if defined __HAVE_ELF__
- /* Define ALIASNAME as a weak alias for NAME. */
- # define weak_alias(name, aliasname) _weak_alias (name, aliasname)
- # define _weak_alias(name, aliasname) \
- extern __typeof (name) aliasname __attribute__ ((weak, alias (#name)));
- /* Define ALIASNAME as a strong alias for NAME. */
- # define strong_alias(name, aliasname) _strong_alias(name, aliasname)
- # define _strong_alias(name, aliasname) \
- extern __typeof (name) aliasname __attribute__ ((alias (#name)));
- /* This comes between the return type and function name in
- * a function definition to make that definition weak. */
- # define weak_function __attribute__ ((weak))
- # define weak_const_function __attribute__ ((weak, __const__))
- /* Tacking on "\n\t#" to the section name makes gcc put it's bogus
- * section attributes on what looks like a comment to the assembler. */
- # if defined(__cris__)
- # define link_warning(symbol, msg)
- # else
- # define link_warning(symbol, msg) \
- asm (".section " ".gnu.warning." #symbol "\n\t.previous"); \
- static const char __evoke_link_warning_##symbol[] \
- __attribute__ ((unused, section (".gnu.warning." #symbol "\n\t#"))) = msg;
- # endif
- #else /* !defined __HAVE_ELF__ */
- # define strong_alias(name, aliasname) _strong_alias (name, aliasname)
- # define weak_alias(name, aliasname) _strong_alias (name, aliasname)
- # define _strong_alias(name, aliasname) \
- __asm__(".global " __C_SYMBOL_PREFIX__ #aliasname "\n" \
- ".set " __C_SYMBOL_PREFIX__ #aliasname "," __C_SYMBOL_PREFIX__ #name);
- # define link_warning(symbol, msg) \
- asm (".stabs \"" msg "\",30,0,0,0\n\t" \
- ".stabs \"" #symbol "\",1,0,0,0\n");
- #endif
- #ifndef weak_function
- /* If we do not have the __attribute__ ((weak)) syntax, there is no way we
- can define functions as weak symbols. The compiler will emit a `.globl'
- directive for the function symbol, and a `.weak' directive in addition
- will produce an error from the assembler. */
- # define weak_function /* empty */
- # define weak_const_function /* empty */
- #endif
- /* On some platforms we can make internal function calls (i.e., calls of
- functions not exported) a bit faster by using a different calling
- convention. */
- #if 0 /*def __i386__*/
- # define internal_function __attribute__ ((regparm (3), stdcall))
- #endif
- #ifndef internal_function
- # define internal_function /* empty */
- #endif
- #ifndef NOT_IN_libc
- # define IS_IN_libc 1
- #endif
- /* Prepare for the case that `__builtin_expect' is not available. */
- #if __GNUC__ == 2 && __GNUC_MINOR__ < 96
- # define __builtin_expect(x, expected_value) (x)
- #endif
- #ifndef likely
- # define likely(x) __builtin_expect((!!(x)),1)
- #endif
- #ifndef unlikely
- # define unlikely(x) __builtin_expect((!!(x)),0)
- #endif
- #ifndef __LINUX_COMPILER_H
- # define __LINUX_COMPILER_H
- #endif
- #ifndef __cast__
- # define __cast__(_to)
- #endif
- #define attribute_unused __attribute__ ((unused))
- /* Arrange to hide uClibc internals */
- #if __GNUC_PREREQ (3, 3)
- # define attribute_hidden __attribute__ ((visibility ("hidden")))
- #else
- # define attribute_hidden
- #endif
- #define hidden_def(name) extern __typeof (name) name attribute_hidden;
- /* Define ALIASNAME as a hidden weak alias for NAME. */
- # define hidden_weak_alias(name, aliasname) _hidden_weak_alias (name, aliasname)
- # define _hidden_weak_alias(name, aliasname) \
- extern __typeof (name) aliasname __attribute__ ((weak, alias (#name))) __attribute__ ((visibility ("hidden")));
- /* Define ALIASNAME as a hidden strong alias for NAME. */
- # define hidden_strong_alias(name, aliasname) _hidden_strong_alias(name, aliasname)
- # define _hidden_strong_alias(name, aliasname) \
- extern __typeof (name) aliasname __attribute__ ((alias (#name))) __attribute__ ((visibility ("hidden")));
- #ifdef __UCLIBC_BUILD_RELRO__
- # define attribute_relro __attribute__ ((section (".data.rel.ro")))
- #else
- # define attribute_relro
- #endif
- #ifdef __GNUC__
- # define attribute_noreturn __attribute__ ((__noreturn__))
- #else
- # define attribute_noreturn
- #endif
- /* Pull in things like __attribute_used__ */
- #include <sys/cdefs.h>
- /* --- this is added to integrate linuxthreads */
- #define __USE_UNIX98 1
- #ifndef __ASSEMBLER__
- # ifdef IS_IN_libc
- # define __UC(N) __ ## N
- # define __UC_ALIAS(N) strong_alias( __ ## N , N )
- # if defined __UCLIBC_HAS_XLOCALE__ && defined __UCLIBC_DO_XLOCALE
- # define __UCXL(N) __ ## N ## _l
- # define __UCXL_ALIAS(N) strong_alias ( __ ## N ## _l , N ## _l )
- # else
- # define __UCXL(N) __UC(N)
- # define __UCXL_ALIAS(N) __UC_ALIAS(N)
- # endif
- # include <bits/types.h>
- # ifndef __ssize_t_defined
- typedef __ssize_t ssize_t;
- # define __ssize_t_defined
- # endif
- # define __need_size_t
- # include <stddef.h>
- # include <bits/sigset.h>
- /* prototypes for internal use, please keep these in sync w/ updated headers */
- /* #include <fcntl.h> */
- extern int __open(__const char *__file, int __oflag, ...) attribute_hidden;
- /* #include <string.h> */
- extern int __memcmp (__const void *__s1, __const void *__s2, size_t __n) attribute_hidden;
- extern void *__memcpy (void *__restrict __dest,
- __const void *__restrict __src, size_t __n) attribute_hidden;
- extern void *__memmove (void *__dest, __const void *__src, size_t __n) attribute_hidden;
- extern void *__memset (void *__s, int __c, size_t __n) attribute_hidden;
- extern char *__strcpy (char *__restrict __dest, __const char *__restrict __src) attribute_hidden;
- extern size_t __strlen (__const char *__s) attribute_hidden;
- extern int __strcmp (__const char *__s1, __const char *__s2) attribute_hidden;
- extern char *__strcat (char *__restrict __dest, __const char *__restrict __src) attribute_hidden;
- extern char *__strncpy (char *__restrict __dest,
- __const char *__restrict __src, size_t __n) attribute_hidden;
- extern char *__strchr (__const char *__s, int __c) attribute_hidden;
- extern int __strncmp (__const char *__s1, __const char *__s2, size_t __n) attribute_hidden;
- extern char *__strdup (__const char *__s) attribute_hidden;
- extern int __strcasecmp (__const char *__s1, __const char *__s2) attribute_hidden;
- extern int __strncasecmp (__const char *__s1, __const char *__s2, size_t __n) attribute_hidden;
- /* sources are built w/ _GNU_SOURCE, this gets undefined */
- extern int __xpg_strerror_r_internal (int __errnum, char *__buf, size_t __buflen) attribute_hidden;
- extern char *__glibc_strerror_r_internal (int __errnum, char *__buf, size_t __buflen) attribute_hidden;
- /* #include <unistd.h> */
- extern ssize_t __read(int __fd, void *__buf, size_t __nbytes) attribute_hidden;
- extern ssize_t __write(int __fd, __const void *__buf, size_t __n) attribute_hidden;
- extern int __close(int __fd) attribute_hidden;
- extern __pid_t __getpid (void) attribute_hidden;
- /* #include <stdio.h> */
- extern void __perror (__const char *__s) attribute_hidden;
- extern int __printf (__const char *__restrict __format, ...) attribute_hidden;
- extern int __sprintf (char *__restrict __s,
- __const char *__restrict __format, ...) attribute_hidden;
- /* hack */
- #define fprintf __fprintf
- #define fclose __fclose
- /* #include <stdlib.h> */
- extern char *__getenv (__const char *__name) attribute_hidden;
- /* #include <signal.h> */
- extern int __sigprocmask (int __how, __const __sigset_t *__restrict __set,
- __sigset_t *__restrict __oset) attribute_hidden;
- /* #include <sys/ioctl.h> */
- extern int __ioctl (int __fd, unsigned long int __request, ...) attribute_hidden;
- /* #include <sys/socket.h> */
- extern int __socket (int __domain, int __type, int __protocol) attribute_hidden;
- # if 0 /* undoable here */
- /* #include <dirent.h> */
- typedef struct __dirstream DIR;
- extern DIR *__opendir (__const char *__name) attribute_hidden;
- extern int __closedir (DIR *__dirp) attribute_hidden;
- /* #include <stdio.h> */
- extern int __vfprintf (FILE *__restrict __s, __const char *__restrict __format,
- __gnuc_va_list __arg) attribute_hidden;
- extern int __fprintf (FILE *__restrict __stream,
- __const char *__restrict __format, ...) attribute_hidden;
- extern int __fclose (FILE *__stream) attribute_hidden;
- /* #include <sys/time.h> */
- # define __need_timeval
- # include <bits/time.h>
- extern int __gettimeofday(struct timeval *__restrict __tv, *__restrict __timezone__ptr_t __tz) attribute_hidden;
- # endif
- /* #include <pthread.h> */
- # ifndef __UCLIBC_HAS_THREADS__
- # define __pthread_mutex_init(mutex, mutexattr) ((void)0)
- # define __pthread_mutex_lock(mutex) ((void)0)
- # define __pthread_mutex_trylock(mutex) ((void)0)
- # define __pthread_mutex_unlock(mutex) ((void)0)
- # endif
- # endif /* IS_IN_libc */
- #endif /* __ASSEMBLER__ */
- #endif /* _LIBC_INTERNAL_H */
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