From f1d1976e7a2a76b3fe9fed7cc97d22d8947a4818 Mon Sep 17 00:00:00 2001 From: William Pitcock Date: Mon, 29 Jan 2018 17:05:35 +0000 Subject: [PATCH] add symbols.h --- include/symbols.h | 45 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 include/symbols.h diff --git a/include/symbols.h b/include/symbols.h new file mode 100644 index 0000000..9abae5f --- /dev/null +++ b/include/symbols.h @@ -0,0 +1,45 @@ +/* Heavily stripped down version of glibc include/libc-symbols.h */ + +/* Support macros for making weak and strong aliases for symbols, + and for using symbol sets and linker warnings with GNU ld. + Copyright (C) 1995-2018 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, see + . */ + +#ifndef __INCLUDE_SYMBOLS_H +#define __INCLUDE_SYMBOLS_H + +#ifndef C_SYMBOL_NAME +# define C_SYMBOL_NAME(name) name +#endif + +#ifndef __ASSEMBLER__ + +/* Define ALIASNAME as a weak alias for NAME. + If weak aliases are not available, this defines a strong alias. */ +# define weak_alias(name, aliasname) _weak_alias (name, aliasname) +# define _weak_alias(name, aliasname) \ + extern __typeof (name) aliasname __attribute__ ((weak, alias (#name))); + +#else + +# define weak_alias(original, alias) \ + .weak C_SYMBOL_NAME (alias) ; \ + C_SYMBOL_NAME (alias) = C_SYMBOL_NAME (original) + +#endif + +#endif