See
https://sourceware.org/pipermail/libc-alpha/2020-November/119575.html
lib{mach,hurd}user.so gets relocated before libc.so, but its references
to strpcpy and memcpy would need an ifunc decision, which e.g. on
x86 relies on cpu_features, but libc.so's _rtld_global_ro is not
relocated yet.
We can however just make lib{mach,hurd}user.so only call non-ifunc
functions, which can be relocated before libc.so is relocated.
Exec needs that mach_setup_thread does *not* set up TLS since it works on
another task, so we have to split this into mach_setup_tls.
* mach/mach.h (__mach_setup_tls, mach_setup_tls): Add prototypes.
* mach/setup-thread.c (__mach_setup_thread): Move TLS setup to...
(__mach_setup_tls): ... new function.
(mach_setup_tls): New alias.
* hurd/hurdsig.c (_hurdsig_init): Call __mach_setup_tls after
__mach_setup_thread.
* sysdeps/mach/hurd/profil.c (update_waiter): Likewise.
* sysdeps/mach/hurd/setitimer.c (setitimer_locked): Likewise.
* mach/Versions [libc] (mach_setup_tls): Add symbol.
* sysdeps/mach/hurd/i386/libc.abilist (mach_setup_tls): Likewise.
* hurd/Versions: Fix version when _hurd_exec_paths was added.
* mach/Versions: Fix version when __mach_host_self_ was added.
* sysdeps/mach/hurd/i386/ld.abilist: New file.
* sysdeps/mach/hurd/i386/libBrokenLocale.abilist: New file.
* sysdeps/mach/hurd/i386/libanl.abilist: New file.
* sysdeps/mach/hurd/i386/libc.abilist: New file.
* sysdeps/mach/hurd/i386/libcrypt.abilist: New file.
* sysdeps/mach/hurd/i386/libdl.abilist: New file.
* sysdeps/mach/hurd/i386/libm.abilist: New file.
* sysdeps/mach/hurd/i386/libnsl.abilist: New file.
* sysdeps/mach/hurd/i386/libresolv.abilist: New file.
* sysdeps/mach/hurd/i386/librt.abilist: New file.
* sysdeps/mach/hurd/i386/libutil.abilist: New file.
libmachuser and libhurduser also need stack_chk_fail_local and they do not
link against libc_nonshared.
* mach/stack_chk_fail_local.c: New file.
* hurd/stack_chk_fail_local.c: New file.
* mach/Machrules ($(interface-library)-routines): Add
stack_chk_fail_local.
* mach/Versions (GLIBC_2.4): Add __stack_chk_fail.
* hurd/Versions (GLIBC_2.4): Add __stack_chk_fail.
2003-02-25 Roland McGrath <roland@redhat.com>
* sysdeps/powerpc/powerpc64/dl-machine.h: Support new TLS relocs.
* sysdeps/powerpc/powerpc64/dl-tls.h: New file.
* sysdeps/mach/hurd/setpriority.c [POLICY_TIMESHARE_BASE_COUNT]:
Use task_policy in place of task_priority.
* sysdeps/generic/bits/mman.h
(MS_ASYNC, MS_SYNC, MS_INVALIDATE): New macros.
* sysdeps/mach/msync.c: New file.
* sysdeps/mach/powerpc/syscall.S: New file.
* mach/msg.c [MACH_MSG_OVERWRITE]
(__mach_msg_trap, __mach_msg_overwrite): New functions.
* mach/Versions (libc: GLIBC_2.0): Add mach_msg_overwrite and __ name.
* sysdeps/mach/configure.in: Check for clock.defs to put into
mach_interface_list.
* sysdeps/mach/configure: Regenerated.
* mach/Makefile (mach-machine): New variable, set from $(base-machine).
($(objpfx)mach-syscalls.mk): Use it in place of $(base-machine).
($(mach-syscalls:%=$(objpfx)%.S) static pattern rule):
Use <mach/machine/syscall_sw.h> instead of <sysdep.h>.
(mach-shortcuts): Add device_read_overwrite_request,
device_read_overwrite, vm_read_overwrite, thread_switch.
* configure.in (base_machine): Set to $machine by default.
* configure: Regenerated.
* mach/Versions (libc: GLIBC_2.0)
[SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1)]: Conditionalize
__vm_allocate on this.
[SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_2)]: Conditionalize
mutex- and spinlock-related symbols on this.
[!SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_2)] (libc: HURD_CTHREADS_0.3):
New version set. Lock-related symbols go here instead in this case.
* sysdeps/mach/hurd/Versions (libc: GLIBC_2.0): Remove
_cthread_exit_routine, _cthread_init_routine, cthread_keycreate,
cthread_getspecific, cthread_setspecific, __libc_getspecific.
* hurd/Versions
[SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_2)] (libc: GLIBC_2.0):
Put them here instead.
[!SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_2)] (libc: HURD_CTHREADS_0.3):
New version set. Those cthreads symbols go here instead in this case.
* Versions.def (libc) [USE_IN_LIBIO]: Add HURD_CTHREADS_0.3 version.
Provide backwards binary compatibility for the Hurd.
* hurd/geteuids.c [PIC && DO_VERSIONING]: Make __getuids a weak
alias for geteuids.
* hurd/Versions [GLIBC_2.0]: Add __getuids,
__hurd_file_name_lookup and _hurd_umask.
[GLIBC_2.1]: Add _hurd_proc_init.
* hurd/Makefile [versioning] (routines): Add compat-20.
(shared-only-routines): Likewise.
* hurd/hurdinit.c (_hurd_new_proc_init): Renamed from
_hurd_proc_init. Use it as the default _hurd_proc_init version
for GLIBC_2.1.
* hurd/compat-20.c: New file.
* mach/Versions [GLIBC_2.0]: Add __vm_allocate.
* mach/Versions [libc, GLIBC_2.0]: Add __spin_lock,
__spin_lock_init, __mutex_lock, __mutex_trylock,
__mutex_unlock.
Remove get_priviliged_ports. Moved to hurd/Versions.
* hurd/Versions [libc, GLIBC_2.0]: Add _end. This makes the Hurd
brk implementation see the end of the data segment of the program
instead of the shared library.
Add __hurd_errno_location. This inline function is used in user
programs.
Add _hurd_critical_section_lock, _hurd_critical_section_unlock,
_hurd_fd_get, _hurd_port_free, _hurd_port_get,
_hurd_port_locked_get. These inline functions are used by macros
used in mail.local in the Hurd distribution.
Add get_privileged_ports. Moved here from mach/Versions.
Remove __hurd_file_name_lookup, __hurd_file_name_lookup_retry,
__hurd_file_name_split, __hurd_file_name_path_lookup. These are
not used outside libc.
1998-11-30 Mark Kettenis <kettenis@phys.uva.nl>
* hurd/hurdstartup.c: Really include set-hooks.h with <> instead
of "".
* mach/Versions: Add evc_wait, mach_error, mach_error_string,
mach_error_type, mach_msg_destroy, mig_deallocate_reply_port.
Remove __mach_host_self, __mach_reply_port, __mach_setup_thread,
__mach_port_allocate, __mach_port_allocate_name,
__mach_port_deallocate, __mach_port_insert_right, __mutex_init,
__mutex_trylock, __mutex_lock, __mutex_unlock, __swtch, __switch,
__task_create, __task_suspend, __task_set_special_port,
__task_terminate, __thread_depress_abort, __thread_switch,
__vm_allocate, __vm_deallocate, __vm_map. These functions are not
used outside libc.
* sysdeps/mach/hurd/Versions: New file.
[libc, GLIBC_2.0]: Add _cthread_exit_routine and
_cthread_init_routine. These are set by the Hurd cthreads library.
Add __getcwd, __mmap. If we don't add these, the weak definitions in
the dynamic linker will not be replaced by the corresponding shared
library routines once they are loaded.
1998-10-21 Mark Kettenis <kettenis@phys.uva.nl>
* sysdeps/mach/hurd/i386/init-first.c: Only define
__libc_enable_secure if PIC is not defined.
1998-10-25 Roland McGrath <roland@baalperazim.frob.com>
* argp/Versions: Add _argp_unlock_xxx. Lock-savvy functions call this
to recurse into argp.
* sysdeps/mach/hurd/dl-sysdep.c (__getcwd): New weak function.
* mach/Versions, hurd/Versions: Add numerous symbols.
Remove libmachuser and libhurduser sections, punt
versioning for those libraries for now.
* misc/Versions: Add reboot here; it exists on all platforms.
* sysdeps/unix/sysv/linux/Versions: Remove reboot here.
