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* htl: Initialize laterSamuel Thibault2020-11-113-84/+24
| | | | | | | | Since htl does not actually need a stack switch, we can initialize it like nptl is, avoiding all sorts of startup issues with ifunc. More precisely, htl defines __pthread_initialize_minimal instead of the elder _cthread_init_routine. We can then drop the stack switching dances.
* hurd: keep only required PLTs in ld.soSamuel Thibault2020-11-112-15/+1
| | | | | | | | | | | | | | | | | | | | | We need NO_RTLD_HIDDEN because of the need for PLT calls in ld.so. See Roland's comment in https://sourceware.org/bugzilla/show_bug.cgi?id=15605 "in the Hurd it's crucial that calls like __mmap be the libc ones instead of the rtld-local ones after the bootstrap phase, when the dynamic linker is being used for dlopen and the like." We used to just avoid all hidden use in the rtld ; this commit switches to keeping only those that should use PLT calls, i.e. essentially those defined in sysdeps/mach/hurd/dl-sysdep.c: __assert_fail __assert_perror_fail __*stat64 _exit This fixes a few startup issues, notably the call to __tunable_get_val that is made before PLTs are set up.
* Remove mknod wrapper functions, move them to symbolsAdhemerval Zanella2020-10-091-0/+2
| | | | | | | | | | | | | | | | | | | This patch removes the mknod and mknodat static wrapper and add the symbols on the libc with the expected names. Both the prototypes of the internal symbol linked by the static wrappers and the inline redirectors are also removed from the installed sys/stat.h header file. The wrapper implementation license LGPL exception is also removed since it is no longer statically linked to binaries. Internally the _STAT_VER* definitions are moved to the arch-specific xstatver.h file. Checked with a build for all affected ABIs. I also checked on x86_64, i686, powerpc, powerpc64le, sparcv9, sparc64, s390, and s390x. Reviewed-by: Lukasz Majewski <lukma@denx.de>
* Remove stat wrapper functions, move them to exported symbolsAdhemerval Zanella2020-10-091-0/+8
| | | | | | | | | | | | | | | | | | | | | | | | This patch removes the stat, stat64, lstat, lstat64, fstat, fstat64, fstatat, and fstatat64 static wrapper and add the symbol on the libc with the expected names. Both the prototypes of the internal symbol linked by the static wrappers and the inline redirectors are also removed from the installed sys/stat.h header file. The wrapper implementation license LGPL exception is also removed since it is no longer statically linked to binaries. Internally the _STAT_VER* definitions are moved to a arch-specific xstatver.h file. The internal defines that redirects internals {f}stat{at} to their {f}xstat{at} counterparts are removed for Linux (!NO_RTLD_HIDDEN). Hurd still requires them since {f}stat{at} pulls extra objects that makes the loader build fail otherwise (I haven't dig into why exactly). Checked with a build for all affected ABIs. I also checked on x86_64, i686, powerpc, powerpc64le, sparcv9, sparc64, s390, and s390x. Reviewed-by: Lukasz Majewski <lukma@denx.de>
* Update mallinfo2 ABI, and testDJ Delorie2020-09-171-0/+1
| | | | | | | This patch adds the ABI-related bits to reflect the new mallinfo2 function, and adds a test case to verify basic functionality. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* hurd: Add __x86_get_cpu_features to ld.abilistH.J. Lu2020-09-131-0/+1
| | | | Add __x86_get_cpu_features to ld.abilist for <sys/platform/x86.h>.
* hurd: Rework sbrkSamuel Thibault2020-08-052-1/+24
| | | | | | | | | | | | | | | | | | | | | | | | | Making the brk start exactly at the end of the main application binary was requiring to get it through the _end symbol, which does not work any more with recent toolchains, and actually produces in libc.so a confusing external _end symbol that produces odd results, see https://sourceware.org/bugzilla/show_bug.cgi?id=23499 Trying to do so is quite outdated anyway with the tendency for address randomization. Using _end was also allowing to include the main binary data within the RLIMIT_DATA, but this also seems outdated with dynamic library loading, and nowadays' memory consumption via malloc and mmap rather than statically-allocated data. This adds a BRK_START macro in <vm_param.h> that just tells where we want to start the brk, and thus removes the _end symbol. * sysdeps/mach/hurd/i386/vm_param.h: New file. * sysdeps/mach/hurd/brk.c: Use BRK_START as brk start instead of _end. Also ignore __data_start. * hurd/Versions: Remove _end symbol. * sysdeps/mach/hurd/i386/libc.abilist: Remove _end symbol.
* hurd: Fix longjmp check for sigstateSamuel Thibault2020-07-182-2/+2
| | | | | * sysdeps/mach/hurd/i386/____longjmp_chk.S,__longjmp.S: Properly check for sigstate being NULL.
* hurd: Fix longjmp early in initializationSamuel Thibault2020-07-182-2/+16
| | | | | | | | | When e.g. an LD_PRELOAD fails, _dl_signal_exception/error longjmps, but TLS is not initialized yet, let along signal state. We thus mustn't look at them within __longjmp. * sysdeps/mach/hurd/i386/____longjmp_chk.S,__longjmp.S: Check for initialized value of %gs, and that sigstate is non-NULL.
* string: Add strerrorname_np and strerrordesc_npAdhemerval Zanella2020-07-071-0/+2
| | | | | | | | | | | | | | | | | The strerrorname_np returns error number name (e.g. "EINVAL" for EINVAL) while strerrordesc_np returns string describing error number (e.g "Invalid argument" for EINVAL). Different than strerror, strerrordesc_np does not attempt to translate the return description, both functions return NULL for an invalid error number. They should be used instead of sys_errlist and sys_nerr, both are thread and async-signal safe. These functions are GNU extensions. Checked on x86-64-linux-gnu, i686-linux-gnu, powerpc64le-linux-gnu, and s390x-linux-gnu. Tested-by: Carlos O'Donell <carlos@redhat.com> Reviewed-by: Carlos O'Donell <carlos@redhat.com>
* string: Add sigabbrev_np and sigdescr_npAdhemerval Zanella2020-07-071-0/+2
| | | | | | | | | | | | | | | | | | The sigabbrev_np returns the abbreviated signal name (e.g. "HUP" for SIGHUP) while sigdescr_np returns the string describing the error number (e.g "Hangup" for SIGHUP). Different than strsignal, sigdescr_np does not attempt to translate the return description and both functions return NULL for an invalid signal number. They should be used instead of sys_siglist or sys_sigabbrev and they are both thread and async-signal safe. They are added as GNU extensions on string.h header (same as strsignal). Checked on x86-64-linux-gnu, i686-linux-gnu, powerpc64le-linux-gnu, and s390x-linux-gnu. Tested-by: Carlos O'Donell <carlos@redhat.com> Reviewed-by: Carlos O'Donell <carlos@redhat.com>
* Add the __libc_single_threaded variableFlorian Weimer2020-07-061-0/+1
| | | | | | | | | | | | | | The variable is placed in libc.so, and it can be true only in an outer libc, not libcs loaded via dlmopen or static dlopen. Since thread creation from inner namespaces does not work, pthread_create can update __libc_single_threaded directly. Using __libc_early_init and its initial flag, implementation of this variable is very straightforward. A future version may reset the flag during fork (but not in an inner namespace), or after joining all threads except one. Reviewed-by: DJ Delorie <dj@redhat.com>
* htl: Enable cancel*16 an cancel*20 testsSamuel Thibault2020-06-291-0/+2
| | | | | | | | | | * nptl/tst-cancel16.c, tst-cancel20.c, tst-cancelx16.c, tst-cancelx20.c: Move to... * sysdeps/pthread: ... here. * nptl/Makefile: Move corresponding references and rules to... * sysdeps/pthread/Makefile: ... here. * sysdeps/mach/hurd/i386/Makefile: Xfail tst-cancel*16 for now: missing barrier pshared support, but test should be working otherwise.
* hurd: make close a cancellation pointSamuel Thibault2020-06-281-1/+2
| | | | | | | | | | | | | | and add _nocancel variant. * sysdeps/mach/hurd/Makefile [io] (sysdep_routines): Add close_nocancel. * sysdeps/mach/hurd/Versions (libc.GLIBC_PRIVATE, ld.GLIBC_PRIVATE): Add __close_nocancel. * sysdeps/mach/hurd/i386/localplt.data (__close_nocancel): Allow PLT. * sysdeps/mach/hurd/close.c: Include <sysdep-cancel.h> (__libc_close): Surround _hurd_fd_close with enabling async cancel. * sysdeps/mach/hurd/close_nocancel.c: New file. * sysdeps/mach/hurd/not-cancel.h (__close_nocancel): Replace macro with declaration with hidden proto.
* hurd: make open and openat cancellation pointsSamuel Thibault2020-06-281-1/+2
| | | | | | | | | | | | | | | | | | | | | and add _nocancel variants. * sysdeps/mach/hurd/Makefile [io] (sysdep_routines): Add open_nocancel openat_nocancel. * sysdeps/mach/hurd/Versions (libc.GLIBC_PRIVATE, ld.GLIBC_PRIVATE): Add __open_nocancel. * sysdeps/mach/hurd/dl-sysdep.c (__open_nocancel): Add alias, check it is not hidden. * sysdeps/mach/hurd/i386/localplt.data (__open_nocancel): Allow PLT. * sysdeps/mach/hurd/not-cancel.h (__open_nocancel, __openat_nocancel: Replace macros with declarations with hidden proto. (__open64_nocancel, __openat64_nocancel): Call __open_nocancel and __openat_nocancel instead of __open64 and __openat64. * sysdeps/mach/hurd/open.c: Include <sysdep-cancel.h> (__libc_open): Surround __file_name_lookup with enabling async cancel. * sysdeps/mach/hurd/openat.c: Likewise. * sysdeps/mach/hurd/open_nocancel.c, sysdeps/mach/hurd/openat_nocancel.c: New files.
* hurd: Add mremapSamuel Thibault2020-06-201-0/+1
| | | | | | | * sysdeps/mach/hurd/mremap.c: New file. * sysdeps/mach/hurd/Makefile [misc] (sysdep_routines): Add mremap. * sysdeps/mach/hurd/Versions (libc.GLIBC_2.32): Add mremap. * sysdeps/mach/hurd/i386/libc.abilist: Add mremap.
* New exp10f version without SVID compat wrapperAdhemerval Zanella2020-06-191-0/+1
| | | | | | | | | | | | | | | | | | | | | | | This patch changes the exp10f error handling semantics to only set errno according to POSIX rules. New symbol version is introduced at GLIBC_2.32. The old wrappers are kept for compat symbols. There are some outliers that need special handling: - ia64 provides an optimized implementation of exp10f that uses ia64 specific routines to set SVID compatibility. The new symbol version is aliased to the exp10f one. - m68k also provides an optimized implementation, and the new version uses it instead of the sysdeps/ieee754/flt32 one. - riscv and csky uses the generic template implementation that does not provide SVID support. For both cases a new exp10f version is not added, but rather the symbols version of the generic sysdeps/ieee754/flt32 is adjusted instead. Checked on aarch64-linux-gnu, x86_64-linux-gnu, i686-linux-gnu, powerpc64le-linux-gnu.
* hurd: Make write and pwrite64 cancellation pointsSamuel Thibault2020-06-141-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | and add _nocancel variants. * sysdeps/mach/hurd/write.c (__libc_write): Call __write_nocancel surrounded by enabling async cancel, to replace implementation moved to... * sysdeps/mach/hurd/write_nocancel.c (__write_nocancel): ... here. * sysdeps/mach/hurd/pwrite64.c (__libc_pwrite64): Call __pwrite64_nocancel surrounded by enabling async cancel, to replace implementation moved to... * sysdeps/mach/hurd/pwrite64_nocancel.c (__pwrite64_nocancel): ... here. * sysdeps/mach/hurd/Makefile (sysdep_routines): Add write_nocancel and pwrite64_nocancel. * sysdeps/mach/hurd/not-cancel.h (__write_nocancel, __pwrite64_nocancel): Replace macros with prototypes with a hidden proto on libc. * sysdeps/mach/hurd/dl-sysdep.c (__write_nocancel): New alias, check that it is not hidden. * sysdeps/mach/hurd/Versions (libc.GLIBC_PRIVATE): Add __write_nocancel. (ld.GLIBC_PRIVATE): Add __write_nocancel. * sysdeps/mach/hurd/i386/localplt.data (__write_nocancel): Add reference.
* hurd: document that gcc&gdb look at the trampoline codeSamuel Thibault2020-06-081-1/+5
| | | | | * sysdeps/mach/hurd/i386/trampoline.c (rpc_wait_trampoline): Document which gcc and gdb files look at the code of the trampoline.
* hurd: Make read and pread64 cancellableSamuel Thibault2020-06-072-1/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | and add _nocancel variants. * sysdeps/mach/hurd/pread64.c (__libc_pread64): Call __pread64_nocancel surrounded by enabling async cancel, to replace implementation moved to... * sysdeps/mach/hurd/pread64_nocancel.c (__pread64_nocancel): ... here. * sysdeps/mach/hurd/read.c (__libc_read): Call __read_nocancel surrounded by enabling async cancel, to replace implementation moved to... * sysdeps/mach/hurd/read_nocancel.c (__read_nocancel): ... here. * sysdeps/mach/hurd/Makefile (sysdep_routines): Add read_nocancel and pread64_nocancel. * sysdeps/mach/hurd/not-cancel.h (__read_nocancel, __pread64_nocancel): Replace macros with prototypes with a hidden proto on libc. * sysdeps/mach/hurd/dl-sysdep.c: Include <not-cancel.h>. (__pread64_nocancel): New alias, check that it is not hidden. (__read_nocancel): New alias, check that it is not hidden. * sysdeps/mach/hurd/Versions (libc.GLIBC_PRIVATE): Add __read_nocancel and __pread64_nocancel. (ld.GLIBC_2.1): Add __pread64. (ld.GLIBC_PRIVATE): Add __read_nocancel and __pread64_nocancel. * sysdeps/mach/hurd/i386/ld.abilist (__pread64): Add symbol. * sysdeps/mach/hurd/i386/localplt.data (__read_nocancel, __pread64, __pread64_nocancel): Add references.
* hurd: Fix unwinding over interruptible RPCSamuel Thibault2020-06-071-0/+2
| | | | | * sysdeps/mach/hurd/i386/intr-msg.h (INTR_MSG_TRAP): Set CFA register to %ecx while %esp is altered.
* htl: Enable but XFAIL tst-flock2, tst-signal1, tst-signal2Samuel Thibault2020-06-071-0/+3
| | | | | | | | | | | They need setpshared support. * nptl/tst-flock2.c, tst-signal1.c, tst-signal2.c: Move to... * sysdeps/pthread: ... here. * nptl/Makefile: Move corresponding tests references to... * sysdeps/pthread/Makefile: ... here. * sysdeps/mach/hurd/i386/Makefile (test-xfail-tst-flock2, test-xfail-tst-signal1, test-xfail-tst-signal2): Add.
* hurd: XFAIL more tests that require setpshared supportSamuel Thibault2020-06-071-0/+3
| | | | | * sysdeps/mach/hurd/i386/Makefile (test-xfail-tst-pututxline-cache, test-xfail-tst-pututxline-lockfail, test-xfail-tst-mallocfork2): Add.
* hurd: Briefly document in xfails the topics of the bugzilla entriesSamuel Thibault2020-06-071-0/+6
| | | | * sysdeps/mach/hurd/i386/Makefile: Add comments.
* htl: Add sem_clockwait supportSamuel Thibault2020-06-071-0/+1
| | | | | | | | | | | | | * sysdeps/htl/sem-timedwait.c (__sem_timedwait_internal): Add clock_id parameter instead of hardcoding CLOCK_REALTIME. (__sem_clockwait): New function. (sem_clockwait): New weak alias. * sysdeps/htl/sem-wait.c (__sem_timedwait_internal): Update declaration. (__sem_wait): Update call to __sem_timedwait_internal. * htl/Versions (GLIBC_2.32): Add sem_clockwait. * sysdeps/mach/hurd/i386/libpthread.abilist (sem_clockwait): Add symbol. * nptl/Makefile (tests): Move tst-sem5 to... * sysdeps/pthread/Makefile (tests): ... here.
* hurd: fix clearing SS_ONSTACK when longjmp-ing from sighandlerSamuel Thibault2020-06-063-32/+126
| | | | | | | | | | | * sysdeps/i386/htl/Makefile: New file. * sysdeps/i386/htl/tcb-offsets.sym: New file. * sysdeps/mach/hurd/i386/Makefile [setjmp] (gen-as-const-headers): Add signal-defines.sym. * sysdeps/mach/hurd/i386/____longjmp_chk.S: Include tcb-offsets.h. (____longjmp_chk): Harmonize with i386's __longjmp. Clear SS_ONSTACK when jumping off the alternate stack. * sysdeps/mach/hurd/i386/__longjmp.S: New file.
* hurd: Add pointer guard supportSamuel Thibault2020-06-061-0/+7
| | | | | * sysdeps/mach/hurd/i386/tls.h (THREAD_SET_POINTER_GUARD, THREAD_COPY_POINTER_GUARD): New macros.
* hurd: Add stack guard supportSamuel Thibault2020-06-062-1/+9
| | | | | | * sysdeps/mach/hurd/i386/tls.h (THREAD_SET_STACK_GUARD, THREAD_COPY_STACK_GUARD): New macros * sysdeps/mach/hurd/i386/ld.abilist (__stack_chk_guard): Remove symbol.
* htl: Add clock variantsSamuel Thibault2020-05-261-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * htl/pt-join.c (__pthread_join): Move implementation to... (__pthread_join_common): ... new function. Add try, timed and clock support. (__pthread_join): Reimplement on top of __pthread_join_common. (__pthread_tryjoin_np, __pthread_timedjoin_np, __pthread_clockjoin_np): Implement on top of __pthread_join_common. (pthread_tryjoin_np, pthread_timedjoin_np, pthread_clockjoin_np): New aliases. * hurd/hurdlock.c (__lll_abstimed_wait, __lll_abstimed_xwait, __lll_abstimed_lock): Check for supported clock. * sysdeps/htl/pt-cond-timedwait.c (__pthread_cond_timedwait_internal): Add clockid parameter and support it. (__pthread_cond_timedwait): Pass -1 as clockid. (__pthread_cond_clockwait): New function. (pthread_cond_clockwait): New alias. * sysdeps/htl/pt-cond-wait.c (__pthread_cond_timedwait_internal): Update prototype. (__pthread_cond_wait): Pass -1 as clockid. * sysdeps/htl/pt-rwlock-timedrdlock.c (__pthread_rwlock_timedrdlock_internal): Add clockid parameter, and support id. (__pthread_rwlock_clockrdlock): New function. (pthread_rwlock_clockrdlock): New alias. * sysdeps/htl/pt-rwlock-rdlock.c (__pthread_rwlock_timedrdlock_internal): Update prototype. (__pthread_rwlock_rdlock): Pass -1 as clockid. * sysdeps/htl/pt-rwlock-timedwrlock.c (__pthread_rwlock_timedwrlock_internal): Add clockid parameter, and support id. (__pthread_rwlock_clockwrlock): New function. (pthread_rwlock_clockwrlock): New alias. * sysdeps/htl/pt-rwlock-wrlock.c (__pthread_rwlock_timedwrlock_internal): Update prototype. (__pthread_rwlock_wrlock): Pass -1 as clockid. * sysdeps/mach/hurd/htl/pt-mutex-timedlock.c (__pthread_mutex_timedlock): Move implementation to (__pthread_mutex_clocklock): New function with additional clockid parameter and support it. (pthread_mutex_clocklock): New alias. (__pthread_mutex_timedlock): Reimplement on top of __pthread_mutex_clocklock. * sysdeps/htl/pthread.h (pthread_tryjoin_np, pthread_timedjoin_np, pthread_clockjoin_np, pthread_mutex_clocklock, pthread_cond_clockwait, pthread_rwlock_clockrdlock, pthread_rwlock_clockwrlock): New prototypes. * sysdeps/htl/pthreadP.h (__pthread_cond_clockwait): New prototype. * htl/Versions (GLIBC_2.32): Add pthread_cond_clockwait, pthread_mutex_clocklock, pthread_rwlock_clockrdlock, pthread_rwlock_clockwrlock, pthread_tryjoin_np, pthread_timedjoin_np, pthread_clockjoin_np. * sysdeps/mach/hurd/i386/libpthread.abilist (pthread_clockjoin_np, pthread_cond_clockwait, pthread_mutex_clocklock, pthread_rwlock_clockrdlock, pthread_rwlock_clockwrlock, pthread_timedjoin_np, pthread_tryjoin_np): New functions. * nptl/tst-abstime.c, nptl/tst-join10.c, nptl/tst-join11.c, nptl/tst-join12.c, nptl/tst-join13.c, nptl/tst-join14.c, nptl/tst-join2.c, nptl/tst-join3.c, nptl/tst-join8.c, nptl/tst-join9.c, nptl/tst-mutex-errorcheck.c, nptl/tst-pthread-mutexattr.c, nptl/tst-mutex11.c, nptl/tst-mutex5.c, nptl/tst-mutex7.c, nptl/tst-mutex7robus.c, nptl/tst-mutex9.c, nptl/tst-rwlock12.c, nptl/tst-rwlock14.c: Move to sysdeps/pthread. * sysdeps/pthread/tst-mutex8.c: Move back to nptl. * nptl/Makefile (tests): Move tst-mutex5, tst-mutex7, tst-mutex7robust, tst-mutex9, tst-mutex11, tst-rwlock12, tst-rwlock14, tst-join2, tst-join3, tst-join8, tst-join9 tst-join10, tst-join11, tst-join12, tst-join13, tst-join14, tst-abstime, tst-mutex-errorcheck, tst-pthread-mutexattr to ... * sysdeps/pthread/Makefile (tests): ... here.
* elf: Turn _dl_printf, _dl_error_printf, _dl_fatal_printf into functionsFlorian Weimer2020-05-251-0/+1
| | | | | | | | | | | | | | 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>
* Remove NO_CTORS_DTORS_SECTIONS macroFlorian Weimer2020-05-181-5/+0
| | | | | | | | | | | This was originally added to support binutils older than version 2.22: <https://sourceware.org/ml/libc-alpha/2010-12/msg00051.html> Since 2.22 is older than the minimum required binutils version for building glibc, we no longer need this. (The changes do not impact the statically linked startup code.)
* elf: Implement __libc_early_initFlorian Weimer2020-04-241-4/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* hurd: add mach_print functionSamuel Thibault2020-04-141-0/+1
| | | | | * mach/Versions (GLIBC_2.32): Add mach_print. * sysdeps/mach/hurd/i386/libc.abilist (GLIBC_2.32): Add mach_print.
* x86: Avoid single-argument _Static_assert in <tls.h>Florian Weimer2020-02-171-8/+12
| | | | | Older GCC versions do not support this extension. Fixes commit f1bdee61797 ("x86 tls: Use _Static_assert for TLS access size assertion").
* x86 tls: Use _Static_assert for TLS access size assertionSamuel Thibault2020-02-171-26/+20
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* pthread: Move robust mutex tests from nptl to sysdeps/pthreadSamuel Thibault2020-02-161-5/+11
| | | | | tst-robust8.c prints some mutex internals for nptl debugging, this needed to be made conditioned by getting built with nptl.
* htl: Add missing functions and defines for robust mutexesSamuel Thibault2020-02-161-0/+6
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* hurd: Add THREAD_GET/SETMEM/_NCSamuel Thibault2020-02-151-0/+108
| | | | Store them in the TCB, and use them for accessing _hurd_sigstate.
* hurd tls: update comment about fields at the end of tcbheadSamuel Thibault2020-02-151-2/+2
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* ld.so: Do not export free/calloc/malloc/realloc functions [BZ #25486]Florian Weimer2020-02-152-10/+0
| | | | | | | | | | | | | | | | | | | 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>
* htl C11 threads: Avoid pthread_ symbols visibility in static librarySamuel Thibault2020-02-101-4/+0
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* pthread: Move most barrier tests from nptl to sysdeps/pthreadSamuel Thibault2020-02-101-0/+1
| | | | So they can be checked with htl too.
* pthread: Move most sem tests from nptl to sysdeps/pthreadSamuel Thibault2020-02-101-0/+9
| | | | So they can be checked with htl too.
* htl: XFAIL rwlock tests which need pshared supportSamuel Thibault2020-02-091-0/+2
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* pthread: Move most cond tests from nptl to sysdeps/pthreadSamuel Thibault2020-02-091-0/+11
| | | | So they can be checked with htl too.
* pthread: Move most mutex tests from nptl to sysdeps/pthreadSamuel Thibault2020-02-091-0/+5
| | | | | | So they can be checked with htl too. XFAIL tst-mutex4, for which support is still missing in htl.
* C11 threads: Move implementation to sysdeps/pthreadSamuel Thibault2020-02-092-0/+25
| | | | | | | so it gets shared by nptl and htl. Also add htl versions of thrd_current and thrd_yield. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* htl: Move internal mutex/rwlock symbols to GLIBC_PRIVATESamuel Thibault2020-02-091-7/+0
| | | | | Their prototypes have never been made public, and they are not used outside libc (checked on the whole Debian archive)
* htl: Add __errno_location and __h_errno_locationSamuel Thibault2020-01-041-0/+2
| | | | | | | | As explained on https://sourceware.org/ml/libc-alpha/2020-01/msg00049.html the presence of __errno_location in libpthread.so on GNU/Linux makes libpthread getting linked in for libstdc++. This aligns on that behavior, to avoid issues that only GNU/Hurd would get.
* Update copyright dates with scripts/update-copyrights.Joseph Myers2020-01-0119-19/+19
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