/* 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 /* 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 /* 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 /* --- 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 # ifndef __ssize_t_defined typedef __ssize_t ssize_t; # define __ssize_t_defined # endif # define __need_size_t # include # include /* prototypes for internal use, please keep these in sync w/ updated headers */ /* #include */ extern int __open(__const char *__file, int __oflag, ...) attribute_hidden; /* #include */ 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 */ 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 */ extern void __perror (__const char *__s) attribute_hidden; /* #include */ extern char *__getenv (__const char *__name) attribute_hidden; /* #include */ extern int __sigprocmask (int __how, __const __sigset_t *__restrict __set, __sigset_t *__restrict __oset) attribute_hidden; /* #include */ extern int __ioctl (int __fd, unsigned long int __request, ...) attribute_hidden; /* #include */ extern int __socket (int __domain, int __type, int __protocol) attribute_hidden; # if 0 /* undoable here */ /* #include */ typedef struct __dirstream DIR; extern DIR *__opendir (__const char *__name) attribute_hidden; extern int __closedir (DIR *__dirp) attribute_hidden; /* #include */ # define __need_timeval # include extern int __gettimeofday(struct timeval *__restrict __tv, *__restrict __timezone__ptr_t __tz) attribute_hidden; # endif /* #include */ # 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 */