diff options
| -rw-r--r-- | include/libc-internal.h | 187 |
1 files changed, 147 insertions, 40 deletions
diff --git a/include/libc-internal.h b/include/libc-internal.h index 265a90023..9160d087d 100644 --- a/include/libc-internal.h +++ b/include/libc-internal.h @@ -20,25 +20,48 @@ #define _LIBC_INTERNAL_H 1 #include <features.h> +#include <bits/uClibc_arch_features.h> + +#define HAVE_ELF 1 #ifdef __UCLIBC_NO_UNDERSCORES__ # define NO_UNDERSCORES #else # undef NO_UNDERSCORES #endif + #ifdef __UCLIBC_HAVE_ASM_SET_DIRECTIVE__ # define HAVE_ASM_SET_DIRECTIVE #else # undef HAVE_ASM_SET_DIRECTIVE #endif -#undef __SYMBOL_PREFIX -#ifndef __SYMBOL_PREFIX -# ifdef NO_UNDERSCORES -# define __SYMBOL_PREFIX -# else -# define __SYMBOL_PREFIX "_" -# endif +#ifdef __UCLIBC_ASM_GLOBAL_DIRECTIVE__ +# define ASM_GLOBAL_DIRECTIVE __UCLIBC_ASM_GLOBAL_DIRECTIVE__ +#else +# define ASM_GLOBAL_DIRECTIVE .global +#endif + +#ifdef __UCLIBC_HAVE_ASM_WEAK_DIRECTIVE__ +# define HAVE_ASM_WEAK_DIRECTIVE +#else +# undef HAVE_ASM_WEAK_DIRECTIVE +#endif + +#ifdef __UCLIBC_HAVE_ASM_WEAKEXT_DIRECTIVE__ +# define HAVE_ASM_WEAKEXT_DIRECTIVE +#else +# undef HAVE_ASM_WEAKEXT_DIRECTIVE +#endif + +#ifdef __UCLIBC_HAVE_ASM_GLOBAL_DOT_NAME__ +# define HAVE_ASM_GLOBAL_DOT_NAME +#else +# undef HAVE_ASM_GLOBAL_DOT_NAME +#endif + +#if defined HAVE_ASM_WEAK_DIRECTIVE || defined HAVE_ASM_WEAKEXT_DIRECTIVE +# define HAVE_WEAK_SYMBOLS #endif #undef C_SYMBOL_NAME @@ -79,34 +102,104 @@ # 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))); /* 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 /* __ASSEMBLER__ */ +# else -# define strong_alias(name, aliasname) \ - .global C_SYMBOL_NAME (aliasname) ; \ - .set C_SYMBOL_NAME(aliasname),C_SYMBOL_NAME(name) +# define weak_alias(name, aliasname) strong_alias(name, aliasname) +# define weak_extern(symbol) /* Nothing. */ -# define weak_alias(name, aliasname) \ - .weak C_SYMBOL_NAME(aliasname) ; \ - C_SYMBOL_NAME(aliasname) = C_SYMBOL_NAME(name) +# endif + +#else /* __ASSEMBLER__ */ + +# ifdef HAVE_ASM_SET_DIRECTIVE +# ifdef HAVE_ASM_GLOBAL_DOT_NAME +# define strong_alias(original, alias) \ + ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME (alias) ASM_LINE_SEP \ + .set C_SYMBOL_NAME (alias),C_SYMBOL_NAME (original) ASM_LINE_SEP \ + ASM_GLOBAL_DIRECTIVE C_SYMBOL_DOT_NAME (alias) ASM_LINE_SEP \ + .set C_SYMBOL_DOT_NAME (alias),C_SYMBOL_DOT_NAME (original) +# define strong_data_alias(original, alias) \ + ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME (alias) ASM_LINE_SEP \ + .set C_SYMBOL_NAME (alias),C_SYMBOL_NAME (original) +# else +# define strong_alias(original, alias) \ + ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME (alias) ASM_LINE_SEP \ + .set C_SYMBOL_NAME (alias),C_SYMBOL_NAME (original) +# define strong_data_alias(original, alias) strong_alias(original, alias) +# endif +# else +# ifdef HAVE_ASM_GLOBAL_DOT_NAME +# define strong_alias(original, alias) \ + ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME (alias) ASM_LINE_SEP \ + C_SYMBOL_NAME (alias) = C_SYMBOL_NAME (original) ASM_LINE_SEP \ + ASM_GLOBAL_DIRECTIVE C_SYMBOL_DOT_NAME (alias) ASM_LINE_SEP \ + C_SYMBOL_DOT_NAME (alias) = C_SYMBOL_DOT_NAME (original) +# define strong_data_alias(original, alias) \ + ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME (alias) ASM_LINE_SEP \ + C_SYMBOL_NAME (alias) = C_SYMBOL_NAME (original) +# else +# define strong_alias(original, alias) \ + ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME (alias) ASM_LINE_SEP \ + C_SYMBOL_NAME (alias) = C_SYMBOL_NAME (original) +# define strong_data_alias(original, alias) strong_alias(original, alias) +# endif +# endif -# define weak_extern(symbol) \ - .weak C_SYMBOL_NAME(symbol) +# ifdef HAVE_WEAK_SYMBOLS +# 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) \ + .weakext C_SYMBOL_NAME (alias), C_SYMBOL_NAME (original) +# endif +# define weak_extern(symbol) \ + .weakext C_SYMBOL_NAME (symbol) + +# else /* ! HAVE_ASM_WEAKEXT_DIRECTIVE */ + +# 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) \ + .weak C_SYMBOL_NAME (alias) ASM_LINE_SEP \ + C_SYMBOL_NAME (alias) = C_SYMBOL_NAME (original) +# endif + +# 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 /* __ASSEMBLER__ */ /* When a reference to SYMBOL is encountered, the linker will emit a warning message MSG. */ -#ifdef __HAVE_ELF__ +#ifdef HAVE_ELF /* We want the .gnu.warning.SYMBOL section to be unallocated. */ # define __make_section_unallocated(section_string) \ @@ -128,11 +221,11 @@ __attribute__ ((used, section (".gnu.warning." #symbol __sec_comment))) \ = msg; # endif -#else /* __HAVE_ELF__ */ +#else /* HAVE_ELF */ # define link_warning(symbol, msg) \ asm (".stabs \"" msg "\",30,0,0,0\n\t" \ ".stabs \"" __C_SYMBOL_PREFIX__ #symbol "\",1,0,0,0\n"); -#endif /* __HAVE_ELF__ */ +#endif /* HAVE_ELF */ #ifndef weak_function /* If we do not have the __attribute__ ((weak)) syntax, there is no way we @@ -146,9 +239,6 @@ /* 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 @@ -282,10 +372,6 @@ # define _hidden_strong_alias(name, aliasname) \ extern __typeof (name) aliasname __attribute__ ((alias (#name))) attribute_hidden; -# 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_hidden; - # define hidden_proto(name, attrs...) __hidden_proto (name, __GI_##name, ##attrs) # define __hidden_proto(name, internal, attrs...) \ extern __typeof (name) name __asm__ (__hidden_asmname (#internal)) \ @@ -302,15 +388,37 @@ # define hidden_data_weak(name) hidden_weak(name) # else /* __ASSEMBLER__ */ -# define hidden_strong_alias(name, aliasname) \ - .global C_SYMBOL_NAME (aliasname) ; \ - .hidden C_SYMBOL_NAME (aliasname) ; \ - .set C_SYMBOL_NAME(aliasname),C_SYMBOL_NAME(name) - -# define hidden_weak_alias(name, aliasname) \ - .weak C_SYMBOL_NAME(aliasname) ; \ - .hidden C_SYMBOL_NAME(aliasname) ; \ - C_SYMBOL_NAME(aliasname) = C_SYMBOL_NAME(name) +# ifdef HAVE_ASM_SET_DIRECTIVE +# ifdef HAVE_ASM_GLOBAL_DOT_NAME +# define hidden_strong_alias(original, alias) \ + ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME (alias) ASM_LINE_SEP \ + .hidden C_SYMBOL_NAME (alias) ASM_LINE_SEP \ + .set C_SYMBOL_NAME (alias),C_SYMBOL_NAME (original) ASM_LINE_SEP \ + ASM_GLOBAL_DIRECTIVE C_SYMBOL_DOT_NAME (alias) ASM_LINE_SEP \ + .hidden C_SYMBOL_DOT_NAME (alias) ASM_LINE_SEP \ + .set C_SYMBOL_DOT_NAME (alias),C_SYMBOL_DOT_NAME (original) +# else +# define hidden_strong_alias(original, alias) \ + ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME (alias) ASM_LINE_SEP \ + .hidden C_SYMBOL_NAME (alias) ASM_LINE_SEP \ + .set C_SYMBOL_NAME (alias),C_SYMBOL_NAME (original) +# endif +# else +# ifdef HAVE_ASM_GLOBAL_DOT_NAME +# define hidden_strong_alias(original, alias) \ + ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME (alias) ASM_LINE_SEP \ + .hidden C_SYMBOL_NAME (alias) ASM_LINE_SEP \ + C_SYMBOL_NAME (alias) = C_SYMBOL_NAME (original) ASM_LINE_SEP \ + ASM_GLOBAL_DIRECTIVE C_SYMBOL_DOT_NAME (alias) ASM_LINE_SEP \ + .hidden C_SYMBOL_DOT_NAME (alias) ASM_LINE_SEP \ + C_SYMBOL_DOT_NAME (alias) = C_SYMBOL_DOT_NAME (original) +# else +# define strong_alias(original, alias) \ + ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME (alias) ASM_LINE_SEP \ + .hidden C_SYMBOL_NAME (alias) ASM_LINE_SEP \ + C_SYMBOL_NAME (alias) = C_SYMBOL_NAME (original) +# endif +# endif /* For assembly, we need to do the opposite of what we do in C: in assembly gcc __REDIRECT stuff is not in place, so functions @@ -329,7 +437,6 @@ # endif /* __ASSEMBLER__ */ #else /* SHARED */ # define hidden_strong_alias(name, aliasname) -# define hidden_weak_alias(name, aliasname) # ifndef __ASSEMBLER__ # define hidden_proto(name, attrs...) |