/* 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. */ #ifndef internal_function # define internal_function /* empty */ #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 #ifdef __UCLIBC_BUILD_RELRO__ # define attribute_relro __attribute__ ((section (".data.rel.ro"))) #else # define attribute_relro #endif /* Pull in things like __attribute_used__ */ #include <sys/cdefs.h> /* --- this is added to integrate linuxthreads */ #define __USE_UNIX98 1 #endif /* _LIBC_INTERNAL_H */