diff options
Diffstat (limited to 'libpthread/nptl/compat/libc-symbols.h')
| -rw-r--r-- | libpthread/nptl/compat/libc-symbols.h | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/libpthread/nptl/compat/libc-symbols.h b/libpthread/nptl/compat/libc-symbols.h new file mode 100644 index 000000000..f2db6a416 --- /dev/null +++ b/libpthread/nptl/compat/libc-symbols.h @@ -0,0 +1,154 @@ +#ifndef _LIBC_SYMBOLS_H +#define _LIBC_SYMBOLS_H 1 + +/* + * NPTL - These definitions were taken from 'include/libc-symbols.h' + * in glibc. We are going to use the empty macros for now + * until we run into other compile errors that force us to + * do otherwise. + */ +#if 0 +# ifndef __ASSEMBLER__ +# if !defined HAVE_VISIBILITY_ATTRIBUTE \ + || defined HAVE_BROKEN_VISIBILITY_ATTRIBUTE +# define __hidden_proto_hiddenattr(attrs...) +# else +# define __hidden_proto_hiddenattr(attrs...) \ + __attribute__ ((visibility ("hidden"), ##attrs)) +# endif +# 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)) \ + __hidden_proto_hiddenattr (attrs); +# define __hidden_asmname(name) \ + __hidden_asmname1 (__USER_LABEL_PREFIX__, name) +# define __hidden_asmname1(prefix, name) __hidden_asmname2(prefix, name) +# define __hidden_asmname2(prefix, name) #prefix name +# 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)))) +# 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); +# define hidden_data_def(name) hidden_def(name) +# define hidden_weak(name) \ + __hidden_ver1(__GI_##name, name, name) __attribute__((weak)); +# define hidden_data_weak(name) hidden_weak(name) +# else +/* 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 + are defined by its normal name and we need to create the + __GI_* alias to it, in C __REDIRECT causes the function definition + to use __GI_* name and we need to add alias to the real name. + There is no reason to use hidden_weak over hidden_def in assembly, + but we provide it for consistency with the C usage. + hidden_proto doesn't make sense for assembly but the equivalent + is to call via the HIDDEN_JUMPTARGET macro instead of JUMPTARGET. */ +# define hidden_def(name) strong_alias (name, __GI_##name) +# define hidden_weak(name) hidden_def (name) +# define hidden_ver(local, name) strong_alias (local, __GI_##name) +# define hidden_data_def(name) strong_data_alias (name, __GI_##name) +# define hidden_data_weak(name) hidden_data_def (name) +# define hidden_data_ver(local, name) strong_data_alias (local, __GI_##name) +# ifdef HAVE_ASM_GLOBAL_DOT_NAME +# define HIDDEN_JUMPTARGET(name) .__GI_##name +# else +# define HIDDEN_JUMPTARGET(name) __GI_##name +# endif +# endif +#else +# ifndef __ASSEMBLER__ +# define hidden_proto(name, attrs...) +# else +# define HIDDEN_JUMPTARGET(name) JUMPTARGET(name) +# endif /* Not __ASSEMBLER__ */ +# define hidden_weak(name) +# define hidden_def(name) +# define hidden_ver(local, name) +# define hidden_data_weak(name) +# define hidden_data_def(name) +# define hidden_data_ver(local, name) +#endif + +#if defined NOT_IN_libc && defined IS_IN_rtld +# define rtld_hidden_proto(name, attrs...) hidden_proto (name, ##attrs) +# define rtld_hidden_def(name) hidden_def (name) +# define rtld_hidden_weak(name) hidden_weak (name) +# define rtld_hidden_ver(local, name) hidden_ver (local, name) +# define rtld_hidden_data_def(name) hidden_data_def (name) +# define rtld_hidden_data_weak(name) hidden_data_weak (name) +# define rtld_hidden_data_ver(local, name) hidden_data_ver (local, name) +#else +# define rtld_hidden_proto(name, attrs...) +# define rtld_hidden_def(name) +# define rtld_hidden_weak(name) +# define rtld_hidden_ver(local, name) +# define rtld_hidden_data_def(name) +# define rtld_hidden_data_weak(name) +# define rtld_hidden_data_ver(local, name) +#endif + +#if !defined NOT_IN_libc +# define libc_hidden_proto(name, attrs...) hidden_proto (name, ##attrs) +# define libc_hidden_def(name) hidden_def (name) +# define libc_hidden_weak(name) hidden_weak (name) +# define libc_hidden_ver(local, name) hidden_ver (local, name) +# define libc_hidden_data_def(name) hidden_data_def (name) +# define libc_hidden_data_weak(name) hidden_data_weak (name) +# define libc_hidden_data_ver(local, name) hidden_data_ver (local, name) +#else +# define libc_hidden_proto(name, attrs...) +# define libc_hidden_def(name) +# define libc_hidden_weak(name) +# define libc_hidden_ver(local, name) +# define libc_hidden_data_def(name) +# define libc_hidden_data_weak(name) +# define libc_hidden_data_ver(local, name) +#endif + +#ifdef HAVE_TLS_MODEL_ATTRIBUTE +# define attribute_tls_model_ie __attribute__ ((tls_model ("initial-exec"))) +#else +# define attribute_tls_model_ie +#endif + +#ifdef HAVE_Z_RELRO +# define attribute_relro __attribute__ ((section (".data.rel.ro"))) +#else +# define attribute_relro +#endif + +/* Define SET as a symbol set. This may be required (it is in a.out) to + be able to use the set's contents. */ +# define symbol_set_define(set) symbol_set_declare(set) + +/* Declare SET for use in this module, if defined in another module. + In a shared library, this is always local to that shared object. + For static linking, the set might be wholly absent and so we use + weak references. */ +# define symbol_set_declare(set) \ + extern char const __start_##set[] __symbol_set_attribute; \ + extern char const __stop_##set[] __symbol_set_attribute; + +# define __symbol_set_attribute attribute_hidden + +/* Return a pointer (void *const *) to the first element of SET. */ +# define symbol_set_first_element(set) ((void *const *) (&__start_##set)) + +/* Return true iff PTR (a void *const *) has been incremented + past the last element in SET. */ +# define symbol_set_end_p(set, ptr) ((ptr) >= (void *const *) &__stop_##set) + +/* Not compiling ELF shared libraries at all, so never any old versions. */ +# define SHLIB_COMPAT(lib, introduced, obsoleted) 0 + +/* No versions to worry about, just make this the global definition. */ +# define versioned_symbol(lib, local, symbol, version) \ + weak_alias (local, symbol) + +/* This should not appear outside `#if SHLIB_COMPAT (...)'. */ +# define compat_symbol(lib, local, symbol, version) ... + +#endif /* _LIBC_SYMBOLS_H */ |