mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-24 14:00:30 +00:00
5d28a8962d
It can be used to speed up the libgcc unwinder, and the internal _dl_find_dso_for_object function (which is used for caller identification in dlopen and related functions, and in dladdr). _dl_find_object is in the internal namespace due to bug 28503. If libgcc switches to _dl_find_object, this namespace issue will be fixed. It is located in libc for two reasons: it is necessary to forward the call to the static libc after static dlopen, and there is a link ordering issue with -static-libgcc and libgcc_eh.a because libc.so is not a linker script that includes ld.so in the glibc build tree (so that GCC's internal -lc after libgcc_eh.a does not pick up ld.so). It is necessary to do the i386 customization in the sysdeps/x86/bits/dl_find_object.h header shared with x86-64 because otherwise, multilib installations are broken. The implementation uses software transactional memory, as suggested by Torvald Riegel. Two copies of the supporting data structures are used, also achieving full async-signal-safety. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
81 lines
1.9 KiB
Plaintext
81 lines
1.9 KiB
Plaintext
libc {
|
|
GLIBC_2.0 {
|
|
%ifdef EXPORT_UNWIND_FIND_FDE
|
|
__deregister_frame_info; __register_frame_info;
|
|
%endif
|
|
}
|
|
GLIBC_2.1 {
|
|
# functions used in other libraries
|
|
_dl_mcount_wrapper; _dl_mcount_wrapper_check;
|
|
}
|
|
GLIBC_2.2.4 {
|
|
dl_iterate_phdr;
|
|
}
|
|
%ifdef EXPORT_UNWIND_FIND_FDE
|
|
# Needed for SHLIB_COMPAT calls using this version.
|
|
GLIBC_2.2.5 {
|
|
}
|
|
GCC_3.0 {
|
|
__deregister_frame_info_bases; __register_frame_info_bases;
|
|
__register_frame_info_table_bases; _Unwind_Find_FDE;
|
|
}
|
|
%endif
|
|
GLIBC_2.35 {
|
|
_dl_find_object;
|
|
}
|
|
GLIBC_PRIVATE {
|
|
# functions used in other libraries
|
|
__libc_early_init;
|
|
|
|
# Internal error handling support. Interposes the functions in ld.so.
|
|
_dl_signal_exception; _dl_catch_exception;
|
|
_dl_signal_error; _dl_catch_error;
|
|
}
|
|
}
|
|
|
|
ld {
|
|
GLIBC_2.0 {
|
|
_r_debug;
|
|
}
|
|
GLIBC_2.1 {
|
|
# functions used in other libraries
|
|
_dl_mcount;
|
|
# historically used by Garbage Collectors
|
|
__libc_stack_end;
|
|
}
|
|
GLIBC_2.3 {
|
|
# runtime interface to TLS
|
|
__tls_get_addr;
|
|
}
|
|
GLIBC_2.4 {
|
|
# stack canary
|
|
__stack_chk_guard;
|
|
}
|
|
GLIBC_PRIVATE {
|
|
# Those are in the dynamic linker, but used by libc.so.
|
|
__libc_enable_secure;
|
|
_dl_allocate_tls; _dl_allocate_tls_init;
|
|
_dl_argv; _dl_find_dso_for_object; _dl_get_tls_static_info;
|
|
_dl_deallocate_tls; _dl_make_stack_executable;
|
|
_dl_rtld_di_serinfo; _dl_starting_up; _dl_fatal_printf;
|
|
_dl_audit_symbind_alt; _dl_audit_preinit;
|
|
_rtld_global; _rtld_global_ro;
|
|
|
|
# Only here for gdb while a better method is developed.
|
|
_dl_debug_state;
|
|
|
|
# Pointer protection.
|
|
__pointer_chk_guard;
|
|
|
|
# Internal error handling support.
|
|
_dl_exception_create; _dl_exception_create_format; _dl_exception_free;
|
|
|
|
# Internal error handling support. Interposed by libc.so.
|
|
_dl_signal_exception; _dl_catch_exception;
|
|
_dl_signal_error; _dl_catch_error;
|
|
|
|
# Set value of a tunable.
|
|
__tunable_get_val;
|
|
}
|
|
}
|