diff options
Diffstat (limited to 'include/libc-symbols.h')
| -rw-r--r-- | include/libc-symbols.h | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/include/libc-symbols.h b/include/libc-symbols.h index 8b9273c13a..e71a479e84 100644 --- a/include/libc-symbols.h +++ b/include/libc-symbols.h @@ -125,6 +125,11 @@ # define ASM_LINE_SEP ; #endif +#ifndef __attribute_copy__ +/* Provide an empty definition when cdefs.h is not included. */ +# define __attribute_copy__(arg) +#endif + #ifndef __ASSEMBLER__ /* GCC understands weak symbols and aliases; use its interface where possible, instead of embedded assembly language. */ @@ -132,7 +137,8 @@ /* 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))); + extern __typeof (name) aliasname __attribute__ ((alias (#name))) \ + __attribute_copy__ (name); /* This comes between the return type and function name in a function definition to make that definition weak. */ @@ -143,14 +149,16 @@ 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))); + extern __typeof (name) aliasname __attribute__ ((weak, alias (#name))) \ + __attribute_copy__ (name); /* Same as WEAK_ALIAS, but mark symbol as hidden. */ # define weak_hidden_alias(name, aliasname) \ _weak_hidden_alias (name, aliasname) # define _weak_hidden_alias(name, aliasname) \ extern __typeof (name) aliasname \ - __attribute__ ((weak, alias (#name), __visibility__ ("hidden"))); + __attribute__ ((weak, alias (#name), __visibility__ ("hidden"))) \ + __attribute_copy__ (name); /* Declare SYMBOL as weak undefined symbol (resolved to 0 if not defined). */ # define weak_extern(symbol) _weak_extern (weak symbol) @@ -532,7 +540,8 @@ for linking") # define __hidden_ver1(local, internal, name) \ extern __typeof (name) __EI_##name __asm__(__hidden_asmname (#internal)); \ extern __typeof (name) __EI_##name \ - __attribute__((alias (__hidden_asmname (#local)))) + __attribute__((alias (__hidden_asmname (#local)))) \ + __attribute_copy__ (name) # define hidden_ver(local, name) __hidden_ver1(local, __GI_##name, name); # define hidden_data_ver(local, name) hidden_ver(local, name) # define hidden_def(name) __hidden_ver1(__GI_##name, name, name); @@ -545,7 +554,8 @@ for linking") # define __hidden_nolink1(local, internal, name, version) \ __hidden_nolink2 (local, internal, name, version) # define __hidden_nolink2(local, internal, name, version) \ - extern __typeof (name) internal __attribute__ ((alias (#local))); \ + extern __typeof (name) internal __attribute__ ((alias (#local))) \ + __attribute_copy__ (name); \ __hidden_nolink3 (local, internal, #name "@" #version) # define __hidden_nolink3(local, internal, vername) \ __asm__ (".symver " #internal ", " vername); |