diff options
Diffstat (limited to 'include/libc-symbols.h')
| -rw-r--r-- | include/libc-symbols.h | 74 |
1 files changed, 25 insertions, 49 deletions
diff --git a/include/libc-symbols.h b/include/libc-symbols.h index e253722c44..c5402de052 100644 --- a/include/libc-symbols.h +++ b/include/libc-symbols.h @@ -55,24 +55,16 @@ /* The symbols in all the user (non-_) macros are C symbols. */ -#if defined HAVE_ASM_WEAK_DIRECTIVE || defined HAVE_ASM_WEAKEXT_DIRECTIVE -# define HAVE_WEAK_SYMBOLS +#if !defined HAVE_ASM_WEAK_DIRECTIVE && !defined HAVE_ASM_WEAKEXT_DIRECTIVE +# error "weak symbol support needed" #endif #ifndef __SYMBOL_PREFIX -# ifdef NO_UNDERSCORES -# define __SYMBOL_PREFIX -# else -# define __SYMBOL_PREFIX "_" -# endif +# define __SYMBOL_PREFIX #endif #ifndef C_SYMBOL_NAME -# ifdef NO_UNDERSCORES -# define C_SYMBOL_NAME(name) name -# else -# define C_SYMBOL_NAME(name) _##name -# endif +# define C_SYMBOL_NAME(name) name #endif #ifndef ASM_LINE_SEP @@ -104,32 +96,23 @@ # define weak_function __attribute__ ((weak)) # define weak_const_function __attribute__ ((weak, __const__)) -# ifdef HAVE_WEAK_SYMBOLS - /* 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) \ +# define weak_alias(name, aliasname) _weak_alias (name, aliasname) +# define _weak_alias(name, aliasname) \ extern __typeof (name) aliasname __attribute__ ((weak, alias (#name))); /* Same as WEAK_ALIAS, but mark symbol as hidden. */ -# define weak_hidden_alias(name, aliasname) \ +# define weak_hidden_alias(name, aliasname) \ _weak_hidden_alias (name, aliasname) -# define _weak_hidden_alias(name, aliasname) \ +# define _weak_hidden_alias(name, aliasname) \ extern __typeof (name) aliasname \ __attribute__ ((weak, alias (#name), __visibility__ ("hidden"))); /* Declare SYMBOL as weak undefined symbol (resolved to 0 if not defined). */ -# define weak_extern(symbol) _weak_extern (weak symbol) -# define _weak_extern(expr) _Pragma (#expr) +# define weak_extern(symbol) _weak_extern (weak symbol) +# define _weak_extern(expr) _Pragma (#expr) -# else - -# define weak_alias(name, aliasname) strong_alias(name, aliasname) -# define weak_hidden_alias(name, aliasname) strong_alias(name, aliasname) -# define weak_extern(symbol) /* Nothing. */ - -# endif #else /* __ASSEMBLER__ */ @@ -167,43 +150,36 @@ # endif # endif -# ifdef HAVE_WEAK_SYMBOLS -# ifdef HAVE_ASM_WEAKEXT_DIRECTIVE -# ifdef HAVE_ASM_GLOBAL_DOT_NAME -# define weak_alias(original, alias) \ +# ifdef HAVE_ASM_WEAKEXT_DIRECTIVE +# ifdef HAVE_ASM_GLOBAL_DOT_NAME +# define weak_alias(original, alias) \ .weakext C_SYMBOL_NAME (alias), C_SYMBOL_NAME (original) ASM_LINE_SEP \ .weakext C_SYMBOL_DOT_NAME (alias), C_SYMBOL_DOT_NAME (original) -# else -# define weak_alias(original, alias) \ +# else +# define weak_alias(original, alias) \ .weakext C_SYMBOL_NAME (alias), C_SYMBOL_NAME (original) -# endif -# define weak_extern(symbol) \ +# endif +# define weak_extern(symbol) \ .weakext C_SYMBOL_NAME (symbol) -# else /* ! HAVE_ASM_WEAKEXT_DIRECTIVE */ +# else /* ! HAVE_ASM_WEAKEXT_DIRECTIVE */ -# ifdef HAVE_ASM_GLOBAL_DOT_NAME -# define weak_alias(original, alias) \ +# ifdef HAVE_ASM_GLOBAL_DOT_NAME +# define weak_alias(original, alias) \ .weak C_SYMBOL_NAME (alias) ASM_LINE_SEP \ C_SYMBOL_NAME (alias) = C_SYMBOL_NAME (original) ASM_LINE_SEP \ .weak C_SYMBOL_DOT_NAME (alias) ASM_LINE_SEP \ C_SYMBOL_DOT_NAME (alias) = C_SYMBOL_DOT_NAME (original) -# else -# define weak_alias(original, alias) \ +# else +# define weak_alias(original, alias) \ .weak C_SYMBOL_NAME (alias) ASM_LINE_SEP \ C_SYMBOL_NAME (alias) = C_SYMBOL_NAME (original) -# endif +# endif -# define weak_extern(symbol) \ +# define weak_extern(symbol) \ .weak C_SYMBOL_NAME (symbol) -# endif /* ! HAVE_ASM_WEAKEXT_DIRECTIVE */ - -# else /* ! HAVE_WEAK_SYMBOLS */ - -# define weak_alias(original, alias) strong_alias(original, alias) -# define weak_extern(symbol) /* Nothing */ -# endif /* ! HAVE_WEAK_SYMBOLS */ +# endif /* ! HAVE_ASM_WEAKEXT_DIRECTIVE */ #endif /* __ASSEMBLER__ */ |