glibc/include/bits
Florian Weimer 5d28a8962d elf: Add _dl_find_object function
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>
2021-12-28 22:52:56 +01:00
..
types
argp-ldbl.h
atomic_wide_counter.h nptl: Extract <bits/atomic_wide_counter.h> from pthread_cond_common.c 2021-11-17 12:20:13 +01:00
cmathcalls.h
cpu-set.h linux: Use sched_getaffinity for __get_nprocs (BZ #27645) 2021-05-07 13:54:09 -03:00
dl_find_object.h elf: Add _dl_find_object function 2021-12-28 22:52:56 +01:00
dlfcn.h
endian.h
err-ldbl.h
error-ldbl.h
error.h
fcntl2.h
getopt_core.h
getopt_ext.h
getopt_posix.h
locale.h
mathcalls-helper-functions.h
mathcalls-narrow.h
mathcalls.h
monetary-ldbl.h
mqueue2.h
poll2.h
posix1_lim.h
posix2_lim.h
printf-ldbl.h
select2.h
setjmp2.h
sigstack.h
sigstksz.h
socket2.h
stab.def
statx-generic.h
statx.h
stdio2.h
stdio-ldbl.h
stdio.h
stdlib-float.h
stdlib-ldbl.h
stdlib.h
string2.h
string_fortified.h
strings_fortified.h
syslog-ldbl.h
syslog.h
types.h
unistd_ext.h linux: Add close_range 2021-07-08 14:08:13 -03:00
unistd.h
wchar2.h
wchar-ldbl.h
wctype-wchar.h
xopen_lim.h