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The old exception handling implementation used function interposition
to replace the dynamic loader implementation (no TLS support) with the
libc implementation (TLS support). This results in problems if the
link order between the dynamic loader and libc is reversed (bug 25486).
The new implementation moves the entire implementation of the
exception handling functions back into the dynamic loader, using
THREAD_GETMEM and THREAD_SETMEM for thread-local data support.
These depends on Hurd support for these macros, added in commit
b65a82e4e757c1e6cb7073916 ("hurd: Add THREAD_GET/SETMEM/_NC").
One small obstacle is that the exception handling facilities are used
before the TCB has been set up, so a check is needed if the TCB is
available. If not, a regular global variable is used to store the
exception handling information.
Also rename dl-error.c to dl-catch.c, to avoid confusion with the
dlerror function.
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
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This reverts commit 6f85dbf102ad7982409ba0fe96886caeb6389fef.
Once this change hits the release branches, it will require relinking
of all statically linked applications before static dlopen works
again, for the majority of updates on release branches: The NEWS file
is regularly updated with bug references, so the __libc_early_init
suffix changes, and static dlopen cannot find the function anymore.
While this ABI check is still technically correct (we do require
rebuilding & relinking after glibc updates to keep static dlopen
working), it is too drastic for stable release branches.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
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The files NEWS, include/link.h, and sysdeps/generic/ldsodefs.h
contribute to the version fingerprint used for detection. The
fingerprint can be further refined using the --with-extra-version-id
configure argument.
_dl_call_libc_early_init is replaced with _dl_lookup_libc_early_init.
The new function is used store a pointer to libc.so's
__libc_early_init function in the libc_map_early_init member of the
ld.so namespace structure. This function pointer can then be called
directly, so the separate invocation function is no longer needed.
The versioned symbol lookup needs the symbol versioning data
structures, so the initialization of libc_map and libc_map_early_init
is now done from _dl_check_map_versions, after this information
becomes available. (_dl_map_object_from_fd does not set this up
in time, so the initialization code had to be moved from there.)
This means that the separate initialization code can be removed from
dl_main because _dl_check_map_versions covers all maps, including
the initial executable loaded by the kernel. The lookup still happens
before relocation and the invocation of IFUNC resolvers, so IFUNC
resolvers are protected from ABI mismatch.
The __libc_early_init function pointer is not protected because
so little code runs between the pointer write and the invocation
(only dynamic linker code and IFUNC resolvers).
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
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The EI_ABIVERSION field of the ELF header in executables and shared
libraries can be bumped to indicate the minimum ABI requirement on the
dynamic linker. However, EI_ABIVERSION in executables isn't checked by
the Linux kernel ELF loader nor the existing dynamic linker. Executables
will crash mysteriously if the dynamic linker doesn't support the ABI
features required by the EI_ABIVERSION field. The dynamic linker should
be changed to check EI_ABIVERSION in executables.
Add a glibc version, GLIBC_ABI_DT_RELR, to indicate DT_RELR support so
that the existing dynamic linkers will issue an error on executables with
GLIBC_ABI_DT_RELR dependency. When there is a DT_VERNEED entry with
libc.so on DT_NEEDED, issue an error if there is a DT_RELR entry without
GLIBC_ABI_DT_RELR dependency.
Support __placeholder_only_for_empty_version_map as the placeholder symbol
used only for empty version map to generate GLIBC_ABI_DT_RELR without any
symbols.
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The glibc 2.34 release really should have added a GLIBC_2.34
symbol to the dynamic loader. With it, we could move functions such
as dlopen or pthread_key_create that work on process-global state
into the dynamic loader (once we have fixed a longstanding issue
with static linking). Without the GLIBC_2.34 symbol, yet another
new symbol version would be needed because old glibc will fail to
load binaries due to the missing symbol version in ld.so that newly
linked programs will require.
Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
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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>
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It consolidates the code required to call la_preinit audit
callback.
Checked on x86_64-linux-gnu, i686-linux-gnu, and aarch64-linux-gnu.
Reviewed-by: Florian Weimer <fweimer@redhat.com>
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It consolidates the code required to call la_symbind{32,64} audit
callback.
Checked on x86_64-linux-gnu, i686-linux-gnu, and aarch64-linux-gnu.
Reviewed-by: Florian Weimer <fweimer@redhat.com>
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They are no longer needed after everything has been moved into
libc. The _dl_vsym test has to be removed because the symbol
cannot be used outside libc anymore.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
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Consolidate all hooks structures into a single one. There are
no static dlopen ABI concerns because glibc 2.34 already comes
with substantial ABI-incompatible changes in this area. (Static
dlopen requires the exact same dynamic glibc version that was used
for static linking.)
The new approach uses a pointer to the hooks structure into
_rtld_global_ro and initalizes it in __rtld_static_init. This avoids
a back-and-forth with various callback functions.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
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This change makes it easier to set a breakpoint on these calls.
This also addresses the issue that including <ldsodefs.h> without
<unistd.h> does not result usable _dl_*printf macros because of the
use of the STD*_FILENO macros there.
(The private symbol for _dl_fatal_printf will go away again
once the exception handling implementation is unified between
libc and ld.so.)
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
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This function is defined in libc.so, and the dynamic loader calls
right after relocation has been finished, before any ELF constructors
or the preinit function is invoked. It is also used in the static
build for initializing parts of the static libc.
To locate __libc_early_init, a direct symbol lookup function is used,
_dl_lookup_direct. It does not search the entire symbol scope and
consults merely a single link map. This function could also be used
to implement lookups in the vDSO (as an optimization).
A per-namespace variable (libc_map) is added for locating libc.so,
to avoid repeated traversals of the search scope. It is similar to
GL(dl_initfirst). An alternative would have been to thread a context
argument from _dl_open down to _dl_map_object_from_fd (where libc.so
is identified). This could have avoided the global variable, but
the change would be larger as a result. It would not have been
possible to use this to replace GL(dl_initfirst) because that global
variable is used to pass the function pointer past the stack switch
from dl_main to the main program. Replacing that requires adding
a new argument to _dl_init, which in turn needs changes to the
architecture-specific libc.so startup code written in assembler.
__libc_early_init should not be used to replace _dl_var_init (as
it exists today on some architectures). Instead, _dl_lookup_direct
should be used to look up a new variable symbol in libc.so, and
that should then be initialized from the dynamic loader, immediately
after the object has been loaded in _dl_map_object_from_fd (before
relocation is run). This way, more IFUNC resolvers which depend on
these variables will work.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
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Exporting functions and relying on symbol interposition from libc.so
makes the choice of implementation dependent on DT_NEEDED order, which
is not what some compiler drivers expect.
This commit replaces one magic mechanism (symbol interposition) with
another one (preprocessor-/compiler-based redirection). This makes
the hand-over from the minimal malloc to the full malloc more
explicit.
Removing the ABI symbols is backwards-compatible because libc.so is
always in scope, and the dynamic loader will find the malloc-related
symbols there since commit f0b2132b35248c1f4a80f62a2c38cddcc802aa8c
("ld.so: Support moving versioned symbols between sonames
[BZ #24741]").
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
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This commit adds a new _dl_open_hook entry for dlvsym and implements the
function using the existing dl_lookup_symbol_x function supplied by the
dynamic loader.
A new hook variable, _dl_open_hook2, is introduced, which should make
this change suitable for backporting: For old statically linked
binaries, __libc_dlvsym will always return NULL.
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This commit separates allocating and raising exceptions. This
simplifies catching and re-raising them because it is no longer
necessary to make a temporary, on-stack copy of the exception message.
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Since _dl_out_of_memory is static in elf/dl-error-skeleton.c:
static const char _dl_out_of_memory[] = "out of memory";
remove _dl_out_of_memory from elf/Versions.
* elf/Versions (ld): Remove _dl_out_of_memory.
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The TUNABLE_SET_VALUE and family of macros (and my later attempt to
add a TUNABLE_GET) never quite went together very well because the
overall interface was not clearly defined. This patch is an attempt
to do just that.
This patch consolidates the API to two simple sets of macros,
TUNABLE_GET* and TUNABLE_SET*. If TUNABLE_NAMESPACE is defined,
TUNABLE_GET takes just the tunable name, type and a (optionally NULL)
callback function to get the value of the tunable. The callback
function, if non-NULL, is called if the tunable was externally set
(i.e. via GLIBC_TUNABLES or any future mechanism). For example:
val = TUNABLE_GET (check, int32_t, check_callback)
returns the value of the glibc.malloc.check tunable (assuming
TUNABLE_NAMESPACE is set to malloc) as an int32_t into VAL after
calling check_callback.
Likewise, TUNABLE_SET can be used to set the value of the tunable,
although this is currently possible only in the dynamic linker before
it relocates itself. For example:
TUNABLE_SET (check, int32_t, 2)
will set glibc.malloc.check to 2. Of course, this is not possible
since we set (or read) glibc.malloc.check long after it is relocated.
To access or set a tunable outside of TUNABLE_NAMESPACE, use the
TUNABLE_GET_FULL and TUNABLE_SET_FULL macros, which have the following
prototype:
TUNABLE_GET_FULL (glibc, tune, hwcap_mask, uint64_t, NULL)
TUNABLE_SET_FULL (glibc, tune, hwcap_mask, uint64_t, 0xffff)
In future the tunable list may get split into mutable and immutable
tunables where mutable tunables can be modified by the library and
userspace after relocation as well and TUNABLE_SET will be more useful
than it currently is. However whenever we actually do that split, we
will have to ensure that the mutable tunables are protected with
locks.
* elf/Versions (__tunable_set_val): Rename to __tunable_get_val.
* elf/dl-tunables.c: Likewise.
(do_tunable_update_val): New function.
(__tunable_set_val): New function.
(__tunable_get_val): Call CB only if the tunable was externally
initialized.
(tunables_strtoul): Replace strval with initialized.
* elf/dl-tunables.h (strval): Replace with a bool initialized.
(TUNABLE_ENUM_NAME, TUNABLE_ENUM_NAME1): Adjust names to
prevent collision.
(__tunable_set_val): New function.
(TUNABLE_GET, TUNABLE_GET_FULL): New macros.
(TUNABLE_SET, TUNABLE_SET_FULL): Likewise.
(TUNABLE_SET_VAL): Remove.
(TUNABLE_SET_VAL_WITH_CALLBACK): Likewise.
* README.tunables: Document the new macros.
* malloc/arena.c (ptmalloc_init): Adjust.
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The tunables framework allows us to uniformly manage and expose global
variables inside glibc as switches to users. tunables/README has
instructions for glibc developers to add new tunables.
Tunables support can be enabled by passing the --enable-tunables
configure flag to the configure script. This patch only adds a
framework and does not pose any limitations on how tunable values are
read from the user. It also adds environment variables used in malloc
behaviour tweaking to the tunables framework as a PoC of the
compatibility interface.
* manual/install.texi: Add --enable-tunables option.
* INSTALL: Regenerate.
* README.tunables: New file.
* Makeconfig (CPPFLAGS): Define TOP_NAMESPACE.
(before-compile): Generate dl-tunable-list.h early.
* config.h.in: Add HAVE_TUNABLES.
* config.make.in: Add have-tunables.
* configure.ac: Add --enable-tunables option.
* configure: Regenerate.
* csu/init-first.c (__libc_init_first): Move
__libc_init_secure earlier...
* csu/init-first.c (LIBC_START_MAIN):... to here.
Include dl-tunables.h, libc-internal.h.
(LIBC_START_MAIN) [!SHARED]: Initialize tunables for static
binaries.
* elf/Makefile (dl-routines): Add dl-tunables.
* elf/Versions (ld): Add __tunable_set_val to GLIBC_PRIVATE
namespace.
* elf/dl-support (_dl_nondynamic_init): Unset MALLOC_CHECK_
only when !HAVE_TUNABLES.
* elf/rtld.c (process_envvars): Likewise.
* elf/dl-sysdep.c [HAVE_TUNABLES]: Include dl-tunables.h
(_dl_sysdep_start): Call __tunables_init.
* elf/dl-tunable-types.h: New file.
* elf/dl-tunables.c: New file.
* elf/dl-tunables.h: New file.
* elf/dl-tunables.list: New file.
* malloc/tst-malloc-usable-static.c: New test case.
* malloc/Makefile (tests-static): Add it.
* malloc/arena.c [HAVE_TUNABLES]: Include dl-tunables.h.
Define TUNABLE_NAMESPACE.
(DL_TUNABLE_CALLBACK (set_mallopt_check)): New function.
(DL_TUNABLE_CALLBACK_FNDECL): New macro. Use it to define
callback functions.
(ptmalloc_init): Set tunable values.
* scripts/gen-tunables.awk: New file.
* sysdeps/mach/hurd/dl-sysdep.c: Include dl-tunables.h.
(_dl_sysdep_start): Call __tunables_init.
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Commit 7a5e3d9d633c828d84a9535f26b202a6179978e7 (elf: Assume TLS is
initialized in _dl_map_object_from_fd) removed the last call of
_dl_tls_setup, but did not remove the function itself.
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It is no longer needed since commit 6c444ad6e953dbdf9c7be065308a0a777
(elf: Do not use memalign for TCB/TLS blocks allocation [BZ #17730]).
Applications do not link against ld.so and will use the definition in
libc.so, so there is no ABI impact.
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This change moves the main implementation of _dl_catch_error,
_dl_signal_error to libc.so, where TLS variables can be used
directly. This removes a writable function pointer from the
rtld_global variable.
For use during initial relocation, minimal implementations of these
functions are provided in ld.so. These are eventually interposed
by the libc.so implementations. This is implemented by compiling
elf/dl-error-skeleton.c twice, via elf/dl-error.c and
elf/dl-error-minimal.c.
As a side effect of this change, the static version of dl-error.c
no longer includes support for the
_dl_signal_cerror/_dl_receive_error mechanism because it is only
used in ld.so.
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As needed for SHLIB_COMPAT calls using this version.
* elf/Versions (libc) [EXPORT_UNWIND_FIND_FDE]: Add empty
GLIBC_2.2.5 version.
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This reverts commit 35e8f7ab94c910659de9d507aa0f3e1f8973d914.
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Factor out _dl_clear_dtv.
2013-12-18 Andrew Hunter <ahh@google.com>
* elf/Versions (ld): Add _dl_clear_dtv.
* sysdeps/generic/ldsodefs.h (_dl_clear_dtv): New prototype.
* elf/dl-tls.c (_dl_clear_dtv): New function.
* nptl/allocatestack.c (get_cached_stack): Call _dl_clear_dtv.
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Consolidate code to search for an address within a DSO.
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_dl_tls_get_addr_soft element.
* elf/rtld.c (rtld_global_ro): Initialize _dl_tls_get_addr_soft.
* elf/Versions (ld): Don't export _dl_tls_get_addr_soft.
* dlfcn/dlinfo.c (dlinfo_doit): Access dl_tls_get_addr_soft through
GLRO.
* elf/dl-iteratephdr.c (__dl_iterate_phdr): Likewise.
* elf/dl-tls.c (_dl_tls_get_addr_soft): Use attribute_hidden instead
of internal_function.
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* elf/Makefile (tests): Add it.
($(objpfx)tst-tls-dlinfo): Depend on $(libdl).
($(objpfx)tst-tls-dlinfo.out): Depend on $(objpfx)tst-tlsmod2.so.
* dlfcn/dlfcn.h (RTLD_DI_PROFILENAME, RTLD_DI_PROFILEOUT): New enum
values, reserve unsupported requested names used on Solaris.
(RTLD_DI_TLS_MODID, RTLD_DI_TLS_DATA): New enum values.
(RTLD_DI_MAX): Likewise.
* dlfcn/dlinfo.c (dlinfo_doit): Handle RTLD_DI_TLS_MODID and
RTLD_DI_TLS_DATA.
* elf/dl-tls.c (_dl_tls_get_addr_soft): New function.
* sysdeps/generic/ldsodefs.h: Declare it.
* elf/Versions (ld: GLIBC_PRIVATE): Add it.
* elf/link.h (struct dl_phdr_info): New members dlpi_tls_modid,
dlpi_tls_data.
* elf/dl-iteratephdr.c (__dl_iterate_phdr): Fill them in.
* include/link.h: Don't copy contents from elf/link.h.
Instead, #include it while #define'ing around link_map.
* elf/dl-debug.c (_dl_debug_initialize): Add a cast.
Add bogus extern decl to verify link_map members.
* elf/loadtest.c (MAPS): New macro, cast _r_debug._r_map.
(OUT, main): Use it in place of _r_debug._r_map.
* elf/unload.c: Likewise.
* elf/unload2.c: Likewise.
* elf/neededtest.c (check_loaded_objects): Likewise.
* elf/neededtest2.c (check_loaded_objects): Likewise.
* elf/neededtest3.c (check_loaded_objects): Likewise.
* elf/neededtest4.c (check_loaded_objects): Likewise.
* elf/circleload1.c (check_loaded_objects): Likewise.
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* elf/rtld.c: Define __pointer_chk_guard_local and if necessary
__pointer_chk_guard.
(_rtld_global_ro): Initialize _dl_pointer_guard.
(dl_main): Initialize __pointer_chk_guard_local and either
__pointer_chk_guard or TLS value if necessary.
(process_envvars): Recognize and handle LD_POINTER_GUARD.
* sysdeps/generic/ldsodefs.h (rtld_global_ro): Add _dl_pointer_guard.
* sysdeps/i386/__longjmp.S: Use PTR_DEMANGLE for PC if defined.
* sysdeps/x86_64/__longjmp.S: Likewise.
* sysdeps/i386/bsd-_setjmp.S: Use PTR_MANGLE for PC if defined.
* sysdeps/i386/bsd-_setjmp.S: Likewise.
* sysdeps/i386/setjmp.S: Likewise.
[IS_IN_rtld]: Avoid call to __sigjmp_save.
* sysdeps/i386/setjmp.S: Likewise.
* sysdeps/unix/sysv/linux/i386/sysdep.h: Define PTR_MANGLE and
PTR_DEMANGLE.
* sysdeps/unix/sysv/linux/x86_64/sysdep.h: Likewise.
* sysdeps/i386/elf/setjmp.S: Removed.
* sysdeps/i386/elf/bsd-setjmp.S: Removed.
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* configure.in: Add --enable-stackguard-randomization option.
(ENABLE_STACKGUARD_RANDOMIZE): New define.
* config.h.in (ENABLE_STACKGUARD_RANDOMIZE): Add.
* sysdeps/unix/sysv/linux/dl-osinfo.h: Include stdint.h.
(_dl_setup_stack_chk_guard): New inline function.
* sysdeps/generic/dl-osinfo.h: Include stdint.h.
(_dl_setup_stack_chk_guard): New inline function.
* elf/rtld.c (__stack_chk_guard): New variable.
(dl_main): Remove all traces of TLS_INIT_TP_EXPENSIVE.
Set __stack_chk_guard to _dl_setup_stack_chk_guard (),
use THREAD_SET_STACK_GUARD if defined.
* elf/Versions (ld): Export __stack_chk_guard@@GLIBC_2.4.
* sysdeps/generic/libc-start.c (__stack_chk_guard): New variable.
(__libc_start_main): Set __stack_chk_guard to
_dl_setup_stack_chk_guard (), use THREAD_SET_STACK_GUARD if defined.
* sysdeps/generic/libc-tls.c (__libc_setup_tls): Remove all
traces of TLS_INIT_TP_EXPENSIVE.
* debug/Versions (libc): Export __stack_chk_fail@@GLIBC_2.4.
* debug/Makefile (routines): Add stack_chk_fail.
(static-only-routines): Add stack_chk_fail_local.
* debug/stack_chk_fail_local.c: New file.
* debug/stack_chk_fail.c: New file.
* elf/Makefile: Add rules to build and run tst-stackguard1{,-static}
tests.
* elf/tst-stackguard1.c: New file.
* elf/tst-stackguard1-static.c: New file.
* elf/stackguard-macros.h: New file.
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* sysdeps/generic/libc-start.c: Don't register program destructor here.
* dlfcn/Makefile: Add rules to build dlfcn.c.
(LDFLAGS-dl.so): Removed.
* dlfcn/dlclose.c: _dl_close is now in ld.so, use function pointer
table.
* dlfcn/dlmopen.c: Likewise for _dl_open.
* dlfcn/dlopen.c: Likewise.
* dlfcn/dlopenold.c: Likewise.
* elf/dl-libc.c: Likewise for _dl_open and _dl_close.
* elf/Makefile (routines): Remove dl-open and dl-close.
(dl-routines): Add dl-open, dl-close, and dl-trampoline.
Add rules to build and run tst-audit1.
* elf/tst-audit1.c: New file.
* elf/tst-auditmod1.c: New file.
* elf/Versions [libc]: Remove _dl_open and _dl_close.
* elf/dl-close.c: Change for use inside ld.so instead of libc.so.
* elf/dl-open.c: Likewise.
* elf/dl-debug.c (_dl_debug_initialize): Allow reinitialization,
signaled by nonzero parameter.
* elf/dl-init.c: Fix use of r_state.
* elf/dl-load.c: Likewise.
* elf/dl-close.c: Add auditing checkpoints.
* elf/dl-open.c: Likewise.
* elf/dl-fini.c: Likewise.
* elf/dl-load.c: Likewise.
* elf/dl-sym.c: Likewise.
* sysdeps/generic/libc-start.c: Likewise.
* elf/dl-object.c: Allocate memory for auditing information.
* elf/dl-reloc.c: Remove RESOLV. We now always need the map.
Correctly initialize slotinfo.
* elf/dynamic-link.h: Adjust after removal of RESOLV.
* sysdeps/hppa/dl-lookupcfg.h: Likewise.
* sysdeps/ia64/dl-lookupcfg.h: Likewise.
* sysdeps/powerpc/powerpc64/dl-lookupcfg.h: Removed.
* elf/dl-runtime.c (_dl_fixup): Little cleanup.
(_dl_profile_fixup): New parameters to point to register struct and
variable for frame size.
Add auditing checkpoints.
(_dl_call_pltexit): New function.
Don't define trampoline code here.
* elf/rtld.c: Recognize LD_AUDIT. Load modules on startup.
Remove all the functions from _rtld_global_ro which only _dl_open
and _dl_close needed.
Add auditing checkpoints.
* elf/link.h: Define symbols for auditing interfaces.
* include/link.h: Likewise.
* include/dlfcn.h: Define __RTLD_AUDIT.
Remove prototypes for _dl_open and _dl_close.
Adjust access to argc and argv in libdl.
* dlfcn/dlfcn.c: New file.
* sysdeps/generic/dl-lookupcfg.h: Remove all content now that RESOLVE
is gone.
* sysdeps/generic/ldsodefs.h: Add definitions for auditing interfaces.
* sysdeps/generic/unsecvars.h: Add LD_AUDIT.
* sysdeps/i386/dl-machine.h: Remove trampoline code here.
Adjust for removal of RESOLVE.
* sysdeps/x86_64/dl-machine.h: Likewise.
* sysdeps/generic/dl-trampoline.c: New file.
* sysdeps/i386/dl-trampoline.c: New file.
* sysdeps/x86_64/dl-trampoline.c: New file.
* sysdeps/generic/dl-tls.c: Cleanups. Fixup for dtv_t change.
Fix updating of DTV.
* sysdeps/generic/libc-tls.c: Likewise.
* sysdeps/arm/bits/link.h: Renamed to ...
* sysdeps/arm/buts/linkmap.h: ...this.
* sysdeps/generic/bits/link.h: Renamed to...
* sysdeps/generic/bits/linkmap.h: ...this.
* sysdeps/hppa/bits/link.h: Renamed to...
* sysdeps/hppa/bits/linkmap.h: ...this.
* sysdeps/hppa/i386/link.h: Renamed to...
* sysdeps/hppa/i386/linkmap.h: ...this.
* sysdeps/hppa/ia64/link.h: Renamed to...
* sysdeps/hppa/ia64/linkmap.h: ...this.
* sysdeps/hppa/s390/link.h: Renamed to...
* sysdeps/hppa/s390/linkmap.h: ...this.
* sysdeps/hppa/sh/link.h: Renamed to...
* sysdeps/hppa/sh/linkmap.h: ...this.
* sysdeps/hppa/x86_64/link.h: Renamed to...
* sysdeps/hppa/x86_64/linkmap.h: ...this.
2005-01-06 Ulrich Drepper <drepper@redhat.com>
* allocatestack.c (init_one_static_tls): Adjust initialization of DTV
entry for static tls deallocation fix.
* sysdeps/alpha/tls.h (dtv_t): Change pointer type to be struct which
also contains information whether the memory pointed to is static
TLS or not.
* sysdeps/i386/tls.h: Likewise.
* sysdeps/ia64/tls.h: Likewise.
* sysdeps/powerpc/tls.h: Likewise.
* sysdeps/s390/tls.h: Likewise.
* sysdeps/sh/tls.h: Likewise.
* sysdeps/sparc/tls.h: Likewise.
* sysdeps/x86_64/tls.h: Likewise.
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2004-10-19 Ulrich Drepper <drepper@redhat.com>
* elf/Versions [ld, GLIBC_PRIVATE]: Add _dl_debug_state.
* elf/dl-debug.c (_dl_debug_state): Add rtld_hidden_def.
* sysdeps/generic/ldsodefs.h (_dl_debug_state): Don't maek as
hidden but use rtld_hidden_proto.
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* elf/Versions: Remove functions which are not exported anymore.
* dlfcn/dlerror.c: Call ld.so functions through GLSO.
* dlfcn/dlinfo.c: Likewise.
* elf/dl-close.c: Likewise.
* elf/dl-libc.c: Likewise.
* elf/dl-open.c: Likewise.
* elf/dl-sym.c: Likewise.
* sysdeps/generic/libc-start.c: Likewise.
* elf/dl-debug.c: Remove *_internal definition. Don't use INTUSE for
functions which are not exported anymore.
* elf/dl-deps.c: Likewise.
* elf/dl-dst.h: Likewise.
* elf/dl-error.c: Likewise.
* elf/dl-fini.c: Likewise.
* elf/dl-init.c: Likewise.
* elf/dl-load.c: Likewise.
* elf/dl-lookup.c: Likewise.
* elf/dl-misc.c: Likewise.
* elf/dl-profile.c: Likewise.
* elf/dl-profstub.c: Likewise.
* elf/dl-reloc.c: Likewise.
* elf/dl-runtime.c: Likewise.
* elf/dl-version.c: Likewise.
* elf/do-lookup.h: Likewise.
* include/dlfcn.h: Likewise.
* sysdeps/generic/dl-cache.c: Likewise.
* sysdeps/generic/dl-fptr.c: Likewise.
* sysdeps/generic/dl-origin.c: Likewise.
* sysdeps/generic/dl-sysdep.c: Likewise.
* sysdeps/generic/dl-tls.c: Likewise.
* sysdeps/generic/ldsodefs.h: Likewise.
* sysdeps/i386/dl-tls.h: Likewise.
* sysdeps/unix/sysv/linux/dl-origin.c: Likewise.
* elf/rtld.c: Likewise. Export function though _rtld_global_ro.
* generic/dl-fptr.c: Likewise.
* mach/hurd/dl-sysdep.c: Likewise.
* unix/sysv/linux/ia64/dl-static.c: Likewise.
* unix/sysv/linux/ia64/getpagesize.c: Likewise.
* unix/sysv/linux/m68k/getpagesize.c: Likewise.
* unix/sysv/linux/sparc/sparc32/getpagesize.c: Likewise.
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2004-03-05 Ulrich Drepper <drepper@redhat.com>
* sysdeps/generic/ldsodefs.h: Define new structure rtld_global_ro.
Declare _rtld_global_ro and _rtld_local_ro. Move members of
rtld_global structure into the new one if they are modified only
at startup time. Define GLRO to access _rtld_global_ro.
* elf/Versions: Export _rtld_global_ro.
* elf/dl-close.c: Use GLRO instead of GL where appropriate.
* elf/dl-conflict.c: Likewise.
* elf/dl-deps.c: Likewise.
* elf/dl-dst.h: Likewise.
* elf/dl-error.c: Likewise.
* elf/dl-fini.c: Likewise.
* elf/dl-init.c: Likewise.
* elf/dl-load.c: Likewise.
* elf/dl-lookup.c: Likewise.
* elf/dl-minimal.c: Likewise.
* elf/dl-open.c: Likewise.
* elf/dl-profile.c: Likewise.
* elf/dl-reloc.c: Likewise.
* elf/dl-runtime.c: Likewise.
* elf/dl-support.c: Likewise.
* elf/dl-version.c: Likewise.
* elf/do-lookup.h: Likewise.
* elf/rtld.c: Likewise.
* sysdeps/generic/dl-cache.c: Likewise.
* sysdeps/generic/dl-origin.c: Likewise.
* sysdeps/generic/dl-sysdep.c: Likewise.
* sysdeps/generic/libc-start.c: Likewise.
* sysdeps/generic/dl-cache.c: Likewise.
* sysdeps/i386/dl-machine.h: Likewise.
* sysdeps/i386/setfpucw.c: Likewise.
* sysdeps/i386/fpu/fclrexcpt.c: Likewise.
* sysdeps/i386/fpu/fedisblexcpt.c: Likewise.
* sysdeps/i386/fpu/feenablxcpt.c: Likewise.
* sysdeps/i386/fpu/feholdexcpt.c: Likewise.
* sysdeps/i386/fpu/fesetround.c: Likewise.
* sysdeps/i386/fpu/fsetexcptflg.c: Likewise.
* sysdeps/i386/fpu/ftestexcept.c: Likewise.
* sysdeps/unix/sysv/linux/dl-execstat.c: Likewise.
* sysdeps/unix/sysv/linux/dl-librecon.h: Likewise.
* sysdeps/unix/sysv/linux/dl-origin.c: Likewise.
* sysdeps/unix/sysv/linux/dl-osinfo.h: Likewise.
* sysdeps/unix/sysv/linux/getclktck.c: Likewise.
* sysdeps/unix/sysv/linux/getpagesize.c: Likewise.
* sysdeps/unix/sysv/linux/init-first.c: Likewise.
* sysdeps/unix/sysv/linux/prof-freq.c: Likewise.
* sysdeps/unix/sysv/linux/i386/dl-librecon.h: Likewise.
* sysdeps/unix/sysv/linux/i386/sigaction.h: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/getcontext.S: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/swapcontext.S: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/getcontext.S: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/swapcontext.S: Likewise.
* sysdeps/x86_64/dl-machine.h: Likewise.
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2003-09-24 Ulrich Drepper <drepper@redhat.com>
* sysdeps/ia64/dl-machine.h (RTLD_START): Remove setting of
__libc_stack_end. Patch by David Mosberger.
2003-09-24 Jakub Jelinek <jakub@redhat.com>
* elf/Versions (ld): Export __libc_stack_end@GLIBC_2.1 instead of
__libc_stack_end@GLIBC_PRIVATE.
* sysdeps/generic/dl-sysdep.c (DL_STACK_END): Define if not defined.
(_dl_sysdep_start): Set __libc_stack_end here.
* sysdeps/alpha/dl-machine.h (RTLD_START): Remove setting of
__libc_stack_end.
* sysdeps/arm/dl-machine.h (RTLD_START): Likewise.
* sysdeps/cris/dl-machine.h (RTLD_START): Likewise.
* sysdeps/i386/dl-machine.h (RTLD_START): Likewise.
* sysdeps/m68k/dl-machine.h (RTLD_START): Likewise.
* sysdeps/s390/s390-32/dl-machine.h (RTLD_START): Likewise.
* sysdeps/s390/s390-64/dl-machine.h (RTLD_START): Likewise.
* sysdeps/sh/dl-machine.h (RTLD_START): Likewise.
* sysdeps/x86_64/dl-machine.h (RTLD_START): Likewise.
* sysdeps/ia64/dl-machine.h (DL_STACK_END): Define.
* sysdeps/sparc/sparc32/dl-machine.h (DL_STACK_END): Define.
(RTLD_START): Remove setting of __libc_stack_end.
* sysdeps/sparc/sparc64/dl-machine.h (DL_STACK_END): Define.
(RTLD_START): Remove setting of __libc_stack_end.
2003-09-24 Ulrich Drepper <drepper@redhat.com>
* sysdeps/unix/sysv/linux/sys/sysmacros.h: Add gnu_dev_ prefix to
function definitions. Adjust macro expansions accordingly.
* sysdeps/unix/sysv/linux/Versions: Add gnu_dev_ prefix to major,
minor, makedev name.
* sysdeps/unix/sysv/linux/makedev.c: Likewise.
2003-09-24 Jakub Jelinek <jakub@redhat.com>
* sysdeps/unix/sysv/linux/sys/sysmacros.h (major, minor, makedev):
Add __THROW.
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* sysdeps/generic/ldsodefs.h (struct rtld_global): Add _dl_stack_flags
and _dl_make_stack_executable_hook. Declare _dl_make_stack_executable.
* elf/rtld.c (_rtld_global): Add initializer for _dl_stack_flags.
(dl_main): Reset _dl_stack_flags according to PT_GNU_STACK phdr.
Initialize _dl_make_stack_executable_hook.
* elf/dl-support.c: Define those new variables.
(_dl_non_dynamic_init): Scan phdrs for PT_GNU_STACK.
(_dl_phdr): Fix type.
* elf/dl-load.c (_dl_map_object_from_fd): Grok PT_GNU_STACK phdr and
enable execute permission for the stack if necessary.
* sysdeps/generic/dl-execstack.c: New file.
* elf/Makefile (dl-routines): Add it.
* elf/Versions (ld: GLIBC_PRIVATE): Add _dl_make_stack_executable.
* sysdeps/unix/sysv/linux/dl-execstack.c: New file.
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* include/stdio.h (__libc_fatal): Add libc_hidden_proto.
* include/dlfcn.h (__libc_dlopen_mode, __libc_dlsym, __libc_dlclose):
Likewise.
* elf/dl-libc.c (__libc_dlopen_mode, __libc_dlsym, __libc_dlclose):
Add libc_hidden_def.
* sysdeps/generic/libc_fatal.c (__libc_fatal): Likewise.
* sysdeps/posix/libc_fatal.c (__libc_fatal): Likewise.
* sysdeps/unix/sysv/linux/libc_fatal.c (__libc_fatal): Likewise.
* elf/Versions (libc): Export __libc_dlopen_mode@@GLIBC_PRIVATE,
__libc_dlsym@@GLIBC_PRIVATE and __libc_dlclose@@GLIBC_PRIVATE.
* libio/Versions (libc): Export __libc_fatal@@GLIBC_PRIVATE.
* sysdeps/generic/unwind-dw2.c: Readd #ifs removed during last
change.
* sysdeps/generic/unwind.inc: Removed.
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2003-06-11 Jakub Jelinek <jakub@redhat.com>
* elf/Versions (libc): Add _dl_open_hook@GLIBC_PRIVATE.
* elf/dl-libc.c (struct dl_open_hook): New.
(_dl_open_hook): New variable.
(do_dlsym_private): New function.
(__libc_dlopen_mode) [!SHARED]: Lookup _dl_open_hook@GLIBC_PRIVATE
and initialize it if found.
(__libc_dlopen_mode) [SHARED]: If _dl_open_hook is non-NULL,
call dlopen_mode hook.
(__libc_dlsym) [SHARED]: If _dl_open_hook is non-NULL,
call dlsym hook.
(__libc_dlclose) [SHARED]: If _dl_open_hook is non-NULL,
call dlclose hook.
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* dlfcn/Makefile (tests): Add tst-dlinfo.
($(objpfx)tst-dlinfo): New target.
* dlfcn/dlinfo.c: New file.
* dlfcn/Makefile (libdl-routines): Add it.
* dlfcn/Versions (libdl: GLIBC_2.3.3): Add dlinfo.
* dlfcn/dlfcn.h [__USE_GNU]: Declare dlinfo.
[__USE_GNU] (RTLD_DI_*): New enum constants.
[__USE_GNU] (Dl_serpath, Dl_serinfo): New types.
* elf/dl-load.c (cache_rpath): New inline function.
(_dl_map_object): Use it.
(_dl_rtld_di_serinfo): New function.
* sysdeps/generic/ldsodefs.h: Declare it.
* elf/Versions (ld: GLIBC_PRIVATE): Add it.
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members to the end, so a libpthread compiled with !USE_TLS will still
find other members properly.
* sysdeps/i386/i486/bits/string.h (__strcpy_g): Add dummy output
operand for DEST memory. Fix dummy input operand to use SRC.
Reported by Davin McCall <davmac@ozonline.com.au>.
* sysdeps/generic/libc-tls.c (__libc_setup_tls): Account for TCB
alignment when initializing the DTV entry.
* elf/dl-load.c (_dl_map_object_from_fd): If we hit a TLS segment
when TLS has not been set up, try to set it up if we can.
* elf/tst-tls4.c: Revert last change.
* elf/tst-tls5.c: Likewise.
* elf/tst-tls6.c: Likewise.
* elf/tst-tls7.c: Likewise.
* elf/tst-tls8.c: Likewise.
* elf/tst-tls9.c: Likewise.
* sysdeps/generic/dl-tls.c [SHARED] (_dl_tls_setup): New function.
* sysdeps/generic/ldsodefs.h: Declare it.
* elf/Versions (ld: GLIBC_PRIVATE): Add it.
* sysdeps/generic/libc-tls.c (init_slotinfo): New static inline
function, broken out of __libc_setup_tls.
(init_static_tls): Likewise.
(__libc_setup_tls): Call them.
(_dl_tls_setup): New function, uses new subroutines.
* elf/dl-close.c (free_slotinfo): Make argument pointer to pointer.
Clear the pointer when returning true.
(libc_freeres_fn) [SHARED]: If GL(dl_initial_dtv) is null, free the
first element of the slotinfo list too.
* sysdeps/generic/dl-tls.c (_dl_determine_tlsoffset): Define only if
[SHARED].
* sysdeps/generic/ldsodefs.h (_dl_next_tls_modid): Declare as hidden.
(_dl_determine_tlsoffset): Likewise.
* elf/rtld.c (_dl_initial_error_catch_tsd): Renamed from
startup_error_tsd, made global.
(dl_main): Update initialization.
* elf/dl-tsd.c: Likewise.
* sysdeps/generic/ldsodefs.h: Declare it.
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* sysdeps/generic/ldsodefs.h: Remove attribute_hidden from
_dl_allocate_tls_init. Add rtld_hidden_proto.
* sysdeps/generic/dl-tls.c (_dl_allocate_tls_init): Add
rtld_hidden_def.
* elf/Versions (ld) [GLIBC_PRIVATE]: Add _dl_allocate_tls_init.
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2002-08-20 Ulrich Drepper <drepper@redhat.com>
* elf/Versions [ld] (GLIBC_PRIVATE): Add _dl_get_tls_static_info.
* sysdeps/generic/dl-tls.c (_dl_allocate_tls_storage): Move dtv
memory allocation to...
(allocate_dtv): ...here. New function.
(_dl_allocate_tls): Change to take parameter. If parameter is non-NULL
call allocate_dtv instead of _dl_allocate_tls_storage.
(_dl_deallocate_tls): New parameter. Deallocate TCB only if true.
(_dl_get_tls_static_info): New function.
* sysdeps/generic/ldsodefs.h: Adjust prototypes of _dl_allocate_tls
and _dl_deallocate_tls. Add prototype for _dl_get_tls_static_info.
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2002-04-07 Ulrich Drepper <drepper@redhat.com>
* sysdeps/mach/hurd/Versions: Add _dl_init_first to libc and ld export
list.
* elf/Versions: Remove it here.
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2002-03-01 Ulrich Drepper <drepper@redhat.com>
* elf/Makefile (dl-routines): Add dl-origin.
(elide-routines.os): Add dl-origin.
* elf/Versions [ld] (GLIBC_PRIVATE): Add _dl_get_origin.
* elf/dl-debug.c (_dl_debug_initialize): Add missing INTUSE around
_dl_debug_state.
* include/libc-symbols.c: Define attribute_hidden depending on
HAVE_VISIBILITY_ATTRIBUTE. Add definition of INTVARDEF.
* elf/dl-deps.c: Use INTUSE with __libc_enable_secure.
* elf/dl-load.c: Likewise.
* elf/rtld.c: Likewise.
* include/unistd.h: Declare __libc_enable_secure_internal.
* sysdeps/generic/dl-sysdep.c: Use INTVARDEF with __libc_enable_secure.
Use INTUSE with __libc_enable_secure.
* sysdeps/mach/hurd/dl-sysdep.c: Likewise.
* elf/dl-deps.c: Use INTUSE with _dl_out_of_memory.
* elf/dl-error.c: Likewise,
* sysdeps/generic/ldsodefs.h: Declare _dl_out_of_memory_internal.
* elf/dl-dst.h [_RTLD_GLOBAL]: Define _dl_get_origin to use INTUSE.
* sysdeps/generic/dl-origin.c: Undefine _dl_get_origin macro before
function definition. Use INTDEF with _dl_get_origin.
* sysdeps/unix/sysv/linux/dl-origin.c: Likewise.
* elf/dl-init.c: Use INTUSE with _dl_starting_up.
* elf/rtld.c: Likewise. Use INTVARDEF for _dl_starting_up.
* elf/dl-profile.c: Use INTDEF for _dl_mcount.
* elf/dl-runtime.c: Use INTUSE with _dl_mcount.
* sysdeps/generic/ldsodefs.h: Declare _dl_mcount_internal.
* elf/dl-conflict.c: Use rtld_progrname instead of _dl_argv[0].
* elf/dl-deps.c: Likewise.
* elf/dl-error.c: Likewise.
* elf/dl-fini.c: Likewise.
* elf/dl-init.c: Likewise.
* elf/dl-load.c: Likewise.
* elf/dl-lookup.c: Likewise.
* elf/dl-reloc.c: Likewise.
* elf/dl-version.c: Likewise.
* elf/do-lookup.h: Likewise.
* sysdeps/arm/dl-machine.h: Likewise.
* sysdeps/cris/dl-machine.h: Likewise.
* sysdeps/hppa/dl-machine.h: Likewise.
* sysdeps/i386/dl-machine.h: Likewise.
* sysdeps/m68k/dl-machine.h: Likewise.
* sysdeps/powerpc/dl-machine.h: Likewise.
* sysdeps/s390/s390-32/dl-machine.h: Likewise.
* sysdeps/s390/s390-64/dl-machine.h: Likewise.
* sysdeps/sh/dl-machine.h: Likewise.
* sysdeps/sparc/sparc-32/dl-machine.h: Likewise.
* sysdeps/sparc/sparc-64/dl-machine.h: Likewise.
* sysdeps/x86_64/dl-machine.h: Likewise.
* elf/rtld.c: Use INTDEF for _dl_argv. Use rtld_progrname instead of
_dl_argv[0]. Use INTUSE with _dl_argv.
* sysdeps/generic/dl-sysdep.c: Use INTUSE with _dl_argv.
* sysdeps/generic/ldsodefs.h: Define rtld_progname macro.
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2002-02-22 Ulrich Drepper <drepper@redhat.com>
* elf/Versions: Add _dl_allocate_tls and _dl_deallocate_tls.
* elf/rtld.c (dl_main): Use _dl_allocate_tls with INTUSE.
* sysdeps/generic/dl-tls.c: Add INTDEF for _dl_allocate_tls.
(_dl_deallocate_tls): New function.
* sysdeps/generic/ldsodefs.h: Declare _dl_allocate_tls_internal and
_dl_deallocate_tls.
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2002-02-12 Ulrich Drepper <drepper@redhat.com>
* sysdeps/generic/dl-tls.c (TLS_DTV_UNALLOCATED): Renamed from
TLS_DTV_UNALLOCATE.
(oom): New function.
(_dl_next_tls_modid): Rewrite to handle dl_tls_dtv_slotinfo_list.
(_dl_determine_tlsoffset): Likewise.
(_dl_allocate_tls): Likewise.
(__TLS_GET_ADDR): Define if not already defined.
(_dl_tls_symaddr): New function.
(allocate_and_init): New function.
(__tls_get_addr): Actually implement handling of generation counter
and deferred allocation.
* sysdeps/generic/ldsodefs.h (_rtld_global): Remove _dl_initimage_list,
add _dl_tls_dtv_slotinfo_list, _dl_tls_static_nelem, and
_dl_tls_generation.
Define TLS_SLOTINFO_SURPLUS and DTV_SURPLUS.
Declare _dl_tls_symaddr.
* sysdeps/i386/dl-tls.h: Disable __tls_get_addr handling unless
SHARED.
* include/link.h (struct link_map): Remove l_tls_nextimage and
l_tls_previmage.
* elf/dl-sym.c (_dl_sym): After successful lookup call _dl_tls_symaddr
instead of DL_SYMBOL_ADDRESS for STT_TLS symbols.
(_dl_vsym): Likewise.
* elf/rtld.c (_dl_start_final): Adjust initdtv initialization for new
layout.
(dl_main): Allow PT_TLS be present for empty segment. Remove
nextimage list handling. Instead add all modules using TLS to
dl_tls_dtv_slotinfo_list.
* elf/dl-open.c (dl_open_worker): After successfully loading all
objects add those with TLS to the dl_tls_dtv_slotinfo_list list.
* elf/dl-load.c (_dl_map_object_from_fd): If PT_TLS entry is for an
empty segment don't do anything. Remove handling of initimage list.
* elf/Versions [ld] (GLIBC_2.0): Add __libc_memalign.
(GLIBC_PRIVATE): Add _dl_tls_symaddr.
* elf/dl-minimal.c: Define __libc_memalign.
* elf/dl-support.c: Remove _dl_initimage_list. Add
_dl_tls_dtv_slotinfo_list, _dl_tls_static_nelem, and
_dl_tls_generation.
* include/stdlib.h: Declare __libc_memalign.
* elf/Makefile: Add rules to build and run tst-tls4 and tst-tls5.
* elf/tst-tls4.c: New file.
* elf/tst-tls5.c: New file.
* elf/tst-tlsmod2.c: New file.
* elf/tls-macros.h: asms using ___tls_get_addr destroy %ecx and %edx.
* elf/tst-tlsmod1.c: Don't define variables unles USE_TLS.
* elf/tst-tls1.c: Use test-skeleton.c.
* elf/tst-tls2.c: Likewise.
* elf/tst-tls3.c: Likewise.
* elf/dl-conflict.c (RESOLVE_MAP): Return NULL not 0.
* sysdeps/mips/machine-gmon.h: Update MCOUNT for current GCC behavior.
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Change ld.so to not use functions which are exported. One cannot
interpose them anyway. Use INT() to mark uses, INTDEF() to mark
definitions.
* include/libc-symbols.h: Define INT and INTDEF.
* sysdeps/generic/ldsodefs.h: Declare _dl_debug_printf_internal,
_dl_signal_error_internal, _dl_map_object_internal,
_dl_map_object_deps_internal, _dl_lookup_symbol_internal,
_dl_lookup_versioned_symbol_internal,
_dl_relocate_object_internal, _dl_debug_state_internal,
_dl_start_profile_internal, and _dl_unload_cache_internal.
* include/dlfcn.h: Declare _dl_catch_error_internal.
* elf/rtld.c: Use INT for calls to any of the *_internal functions
above. Add INTDEF to function definitions.
* elf/dl-debug.c: Likewise.
* elf/dl-deps.c: Likewise.
* elf/dl-dst.h: Likewise.
* elf/dl-error.c: Likewise.
* elf/dl-fini.c: Likewise.
* elf/dl-init.c: Likewise.
* elf/dl-load.c: Likewise.
* elf/dl-lookup.c: Likewise.
* elf/dl-misc.c: Likewise.
* elf/dl-open.c: Likewise.
* elf/dl-profile.c: Likewise.
* elf/dl-reloc.c: Likewise.
* elf/dl-runtime.c: Likewise.
* elf/dl-version.c: Likewise.
* elf/do-lookup.h: Likewise.
* sysdeps/generic/dl-cache.c: Likewise.
* sysdeps/generic/dl-sysdep.c: Likewise.
* sysdeps/alpha/dl-machine.h (RTLD_START): Call _dl_init_internal
instead of _dl_init.
* sysdeps/arm/dl-machine.h: Likewise.
* sysdeps/cris/dl-machine.h: Likewise.
* sysdeps/hppa/dl-machine.h: Likewise.
* sysdeps/i386/dl-machine.h: Likewise.
* sysdeps/ia64/dl-machine.h: Likewise.
* sysdeps/m68k/dl-machine.h: Likewise.
* sysdeps/mips/dl-machine.h: Likewise.
* sysdeps/mips/mips64/dl-machine.h: Likewise.
* sysdeps/s390/s390-32/dl-machine.h: Likewise.
* sysdeps/s390/s390-64/dl-machine.h: Likewise.
* sysdeps/sh/dl-machine.h: Likewise.
* sysdeps/sparc/sparc32/dl-machine.h: Likewise.
* sysdeps/sparc/sparc64/dl-machine.h: Likewise.
* sysdeps/x86_64/dl-machine.h: Likewise.
* sysdeps/powerpc/dl-start.S (_dl_start_user): Likewise.
* elf/Versions: Don't export _dl_check_all_versions, _dl_sysdep_start,
and _dl_debug_initialize.
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