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* 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.
* dl-runtime: reloc_{offset,index} now functions arch overide'ableVineet Gupta2020-06-056-24/+113
| | | | | | | | | | | | | | | The existing macros are fragile and expect local variables with a certain name. Fix this by defining them as functions with default implementation in a new header dl-runtime.h which arches can override if need be. This came up during ARC port review, hence the need for argument pltgot in reloc_index() which is not needed by existing ports. This patch potentially only affects hppa/x86 ports, build tested for both those configs and a few more. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* powerpc64le: add optimized strlen for P9Paul E. Murphy2020-06-056-1/+226
| | | | | | | | | | | | | | | | This started as a trivial change to Anton's rawmemchr. I got carried away. This is a hybrid between P8's asympotically faster 64B checks with extremely efficient small string checks e.g <64B (and sometimes a little bit more depending on alignment). The second trick is to align to 64B by running a 48B checking loop 16B at a time until we naturally align to 64B (i.e checking 48/96/144 bytes/iteration based on the alignment after the first 5 comparisons). This allieviates the need to check page boundaries. Finally, explicly use the P7 strlen with the runtime loader when building P9. We need to be cautious about vector/vsx extensions here on P9 only builds.
* powerpc64le: use common fmaf128 implementationPaul E. Murphy2020-06-053-38/+10
| | | | | | | | | This defines the macro such that it should behave best on all supported powerpc targets. Likewise, this allows us to remove the ppc64le specific s_fmaf128.c. I have verified powerpc64le multiarch and powerpc64le power9 no-multiarch builds continue to generate optimize fmaf128.
* benchtests: Restore the clock_gettime optionH.J. Lu2020-06-053-2/+17
| | | | | | | | | | | | | | commit 7621e38bf3c58b2d0359545f1f2898017fd89d05 Author: Wilco Dijkstra <Wilco.Dijkstra@arm.com> Date: Tue Jan 29 17:43:45 2019 +0000 Add generic hp-timing support removed the clock_gettime option. Restore the clock_gettime option for some x86 CPUs on which value from RDTSC may not be incremented at a fixed rate. Reviewed-by: Carlos O'Donell <carlos@redhat.com>
* Update HP_TIMING_NOW for _ISOMAC in sysdeps/generic/hp-timing.hH.J. Lu2020-06-052-2/+10
| | | | | | | | | | | | | | | | | | | | | | | | | commit e9698175b0b60407db1e89bcf29437ab224bca0b Author: Lukasz Majewski <lukma@denx.de> Date: Mon Mar 16 08:31:41 2020 +0100 y2038: Replace __clock_gettime with __clock_gettime64 breaks benchtests with sysdeps/generic/hp-timing.h: In file included from ./bench-timing.h:23, from ./bench-skeleton.c:25, from /export/build/gnu/tools-build/glibc-gitlab/build-x86_64-linux/benchtests/bench-rint.c:45: ./bench-skeleton.c: In function ‘main’: ../sysdeps/generic/hp-timing.h:37:23: error: storage size of ‘tv’ isn’t known 37 | struct __timespec64 tv; \ | ^~ Define HP_TIMING_NOW with clock_gettime in sysdeps/generic/hp-timing.h if _ISOMAC is defined. Don't define __clock_gettime in bench-timing.h since it is no longer needed. Reviewed-by: Carlos O'Donell <carlos@redhat.com>
* Replace val with __val in TUNABLE_SET_VAL_IF_VALID_RANGEH.J. Lu2020-06-041-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | There are: #define TUNABLE_SET_VAL_IF_VALID_RANGE(__cur, __val, __type) \ ({ \ __type min = (__cur)->type.min; \ __type max = (__cur)->type.max; \ \ if ((__type) (__val) >= min && (__type) (val) <= max) \ ^^^ Should be __val { \ (__cur)->val.numval = val; \ ^^^ Should be __val (__cur)->initialized = true; \ } \ }) Luckily since all TUNABLE_SET_VAL_IF_VALID_RANGE usages are TUNABLE_SET_VAL_IF_VALID_RANGE (cur, val, int64_t); this didn't cause any issues. Reviewed-by: Carlos O'Donell <carlos@redhat.com>
* support: Fix detecting hole support on >2KB-block filesystemsSamuel Thibault2020-06-041-2/+4
| | | | | | | | | | | | | When detecting hole support, we write at 16MiB, and filesystems will typically need two levels of data to record that. On filesystems with 8KB block, the two indirection blocks will require a total of 16KB overhead, thus 32 512-byte sectors. Spotted on GNU/Hurd with a 4KB blocks filesystem, but also happens on Linux with 4KB or 8KB blocks filesystems. * support/support_descriptor_supports_holes.c (support_descriptor_supports_holes): Set block_headroom to 32.
* powerpc: Fix powerpc64le due a7a3435c9aAdhemerval Zanella2020-06-041-0/+2
| | | | | | | | | | | | | | | The build uses an undefined macro evaluation for fmaf128 build. For now set USE_FMAL_BUILTIN and USE_FMAF128_BUILTIN to 0. Checked with a build for: powerpc64le-linux-gnu-power9-disable-multi-arch powerpc64le-linux-gnu-power9 powerpc64le-linux-gnu powerpc64-linux-gnu-power8 powerpc64-linux-gnu powerpc-linux-gnu-power4 powerpc-linux-gnu
* manual/jobs.texi: remove unused var from example codeAurélien Aptel2020-06-031-1/+0
| | | | | | The do_job_notification() function defines a variable without using it. Remove it. Reviewed-by: Carlos O'Donell <carlos@redhat.com>
* powerpc/fpu: use generic fma functionsVineet Gupta2020-06-033-54/+69
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Tested with build-many-glibcs for powerpc-linux-gnu This is a non functional change and powerpc libm before/after was byte invariant as compared below: | cd /SCRATCH/vgupta/gnu/install-glibc-A-baseline | for i in `find . -name libm-2.31.9000.so`; do | echo $i; diff $i /SCRATCH/vgupta/gnu/install-glibc-C-reduce-scope/$i ; | echo $?; | done | ./aarch64-linux-gnu/lib64/libm-2.31.9000.so | 0 | ./arm-linux-gnueabi/lib/libm-2.31.9000.so | 0 | ./x86_64-linux-gnu/lib64/libm-2.31.9000.so | 0 | ./arm-linux-gnueabihf/lib/libm-2.31.9000.so | 0 | ./riscv64-linux-gnu-rv64imac-lp64/lib64/lp64/libm-2.31.9000.so | 0 | ./riscv64-linux-gnu-rv64imafdc-lp64/lib64/lp64/libm-2.31.9000.so | 0 | ./powerpc-linux-gnu/lib/libm-2.31.9000.so | 0 | ./microblaze-linux-gnu/lib/libm-2.31.9000.so | 0 | ./nios2-linux-gnu/lib/libm-2.31.9000.so | 0 | ./hppa-linux-gnu/lib/libm-2.31.9000.so | 0 | ./s390x-linux-gnu/lib64/libm-2.31.9000.so | 0 Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* aarch/fpu: use generic builtins based math functionsVineet Gupta2020-06-0315-398/+71
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | introduce sysdep header math-use-builtins.h to replace aarch64 implementations with corresponding generic ones. - newly inroduced generic sqrt{,f}, fma{,f} - existing floor{,f}, nearbyint{,f}, rint{,f}, round{,f}, trunc{,f} - Note that generic copysign was already enabled (via generic math-use-builtins.h) now thru sysdep header Tested with build-many-glibcs for aarch64-linux-gnu This is a non functional change and aarch64 libm before/after was byte invariant as compared below: | cd /SCRATCH/vgupta/gnu/install-glibc-A-baseline | for i in `find . -name libm-2.31.9000.so`; do | echo $i; diff $i /SCRATCH/vgupta/gnu/install-glibc-C-reduce-scope/$i ; | echo $?; | done | ./aarch64-linux-gnu/lib64/libm-2.31.9000.so | 0 | ./arm-linux-gnueabi/lib/libm-2.31.9000.so | 0 | ./x86_64-linux-gnu/lib64/libm-2.31.9000.so | 0 | ./arm-linux-gnueabihf/lib/libm-2.31.9000.so | 0 | ./riscv64-linux-gnu-rv64imac-lp64/lib64/lp64/libm-2.31.9000.so | 0 | ./riscv64-linux-gnu-rv64imafdc-lp64/lib64/lp64/libm-2.31.9000.so | 0 | ./powerpc-linux-gnu/lib/libm-2.31.9000.so | 0 | ./microblaze-linux-gnu/lib/libm-2.31.9000.so | 0 | ./nios2-linux-gnu/lib/libm-2.31.9000.so | 0 | ./hppa-linux-gnu/lib/libm-2.31.9000.so | 0 | ./s390x-linux-gnu/lib64/libm-2.31.9000.so | 0 Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* ieee754: provide gcc builtins based generic fma functionsVineet Gupta2020-06-037-0/+34
| | | | Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* ieee754: provide gcc builtins based generic sqrt functionsVineet Gupta2020-06-034-6/+22
| | | | Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* Linux: Use __pthread_attr_setsigmask_internal for timer helper threadFlorian Weimer2020-06-021-9/+10
| | | | | | | | | | timer_create needs to create threads with all signals blocked, including SIGTIMER (which happens to equal SIGCANCEL). Fixes commit b3cae39dcbfa2432b3f3aa28854d8ac57f0de1b8 ("nptl: Start new threads with all signals blocked [BZ #25098]"). Reviewed-by: Carlos O'Donell <carlos@redhat.com>
* nptl: Add pthread_attr_setsigmask_np, pthread_attr_getsigmask_npFlorian Weimer2020-06-0242-8/+442
| | | | | Reviewed-by: Carlos O'Donell <carlos@redhat.com> Tested-by: Carlos O'Donell <carlos@redhat.com>
* nptl: Make pthread_attr_t dynamically extensibleFlorian Weimer2020-06-0210-33/+98
| | | | | | | This introduces the function __pthread_attr_extension to allocate the extension space, which is freed by pthread_attr_destroy. Reviewed-by: Carlos O'Donell <carlos@redhat.com>
* nptl: Destroy the default thread attribute as part of freeresFlorian Weimer2020-06-023-0/+13
| | | | | | This avoids a spurious memory leak report by valgrind. Reviewed-by: Carlos O'Donell <carlos@redhat.com>
* nptl: Change type of __default_pthread_attrFlorian Weimer2020-06-028-15/+14
| | | | | | | | | | | | union pthread_attr_transparent has always the correct size, even if pthread_attr_t has padding that is not present in struct pthread_attr. This should not result in an observable behavioral change. The existing code appears to have been correct, but it was brittle because it was not clear which functions were allowed to write to an entire pthread_attr_t argument (e.g., by copying it). Reviewed-by: Carlos O'Donell <carlos@redhat.com>
* nptl: Use __pthread_attr_setaffinity_np in pthread_getattr_npFlorian Weimer2020-06-021-16/+14
| | | | | | | This avoids duplicating the code for the affinity mask allocation handling. Reviewed-by: Carlos O'Donell <carlos@redhat.com>
* nptl: Use __pthread_getattr_default_np in pthread_createFlorian Weimer2020-06-021-25/+7
| | | | | | This removes another instance of custom attribute copying code. Reviewed-by: Carlos O'Donell <carlos@redhat.com>
* nptl: Add internal alias __pthread_getattr_default_npFlorian Weimer2020-06-023-1/+6
| | | | Reviewed-by: Carlos O'Donell <carlos@redhat.com>
* htl: Fix gsync_wait symbol expositionSamuel Thibault2020-06-011-1/+1
| | | | | * sysdeps/htl/pt-cond-destroy.c (__pthread_cond_destroy): Call __gsync_wait instead of gsync_wait.
* htl: Make pthread_cond_destroy wait for threads to be wokenSamuel Thibault2020-06-018-7/+41
| | | | | | | | | | | | | | | | | | This allows to reuse the storage after calling pthread_cond_destroy. * sysdeps/htl/bits/types/struct___pthread_cond.h (__pthread_cond): Replace unused struct __pthread_condimpl *__impl field with unsigned int __wrefs. (__PTHREAD_COND_INITIALIZER): Update accordingly. * sysdeps/htl/pt-cond-timedwait.c (__pthread_cond_timedwait_internal): Register as waiter in __wrefs field. On unregistering, wake any pending pthread_cond_destroy. * sysdeps/htl/pt-cond-destroy.c (__pthread_cond_destroy): Register wake request in __wrefs. * nptl/Makefile (tests): Move tst-cond20 tst-cond21 to... * sysdeps/pthread/Makefile (tests): ... here. * nptl/tst-cond20.c nptl/tst-cond21.c: Move to... * sysdeps/pthread/tst-cond20.c sysdeps/pthread/tst-cond21.c: ... here.
* htl: Enable more cond testsSamuel Thibault2020-06-012-3/+3
| | | | | * nptl/Makefile (tests): Move tst-cond11 and tst-cond27 to... * sysdeps/pthread/Makefile (tests): ... here.
* tst-cond11: Fix build with _SC_MONOTONIC_CLOCK > 0Samuel Thibault2020-06-011-1/+1
| | | | * sysdeps/pthread/tst-cond11.c (do_test): Fix misplaced brace.
* mbstowcs: Document, test, and fix null pointer dst semantics (Bug 25219)Carlos O'Donell2020-06-014-6/+71
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | The function mbstowcs, by an XSI extension to POSIX, accepts a null pointer for the destination wchar_t array. This API behaviour allows you to use the function to compute the length of the required wchar_t array i.e. does the conversion without storing it and returns the number of wide characters required. We remove the __write_only__ markup for the first argument because it is not true since the destination may be a null pointer, and so the length argument may not apply. We remove the markup otherwise the new test case cannot be compiled with -Werror=nonnull. We add a new test case for mbstowcs which exercises the destination is a null pointer behaviour which we have now explicitly documented. The mbsrtowcs and mbsnrtowcs behave similarly, and mbsrtowcs is documented as doing this in C11, even if the standard doesn't come out and call out this specific use case. We add one note to each of mbsrtowcs and mbsnrtowcs to call out that they support a null pointer for the destination. The wcsrtombs function behaves similarly but in the other way around and allows you to use a null destination pointer to compute how many bytes you would need to convert the wide character input. We document this particular case also, but leave wcsnrtombs as a references to wcsrtombs, so the reader must still read the details of the semantics for wcsrtombs.
* build: Use FAIL_EXIT1 () on failure to exec child [BZ #23990]Girish Joshi2020-05-291-1/+1
| | | | Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* manual: Fix backtraces code example [BZ #10441]Girish Joshi2020-05-291-6/+7
| | | | | | | | | | | | Validation for pointer returned by backtrace_symbols () added. Type of variables size and i is changed from size_t to int. Variable size is used to collect the result from backtrace () that is an int. i is the loop counter variable so it can be an int. Since, size_t size is changed to int size, in printf %zd is changed to %d. Reviewed-by: DJ Delorie <dj@redhat.com>
* hurd: Fix fexecveSamuel Thibault2020-05-281-3/+16
| | | | | * sysdeps/mach/hurd/fexecve.c (fexecve): Re-lookup fd with O_EXEC before calling _hurd_exec_paths.
* i386: Remove unused file sysdeps/unix/i386/sysdep.SFlorian Weimer2020-05-281-64/+0
| | | | | | Linux overrides this file via sysdeps/unix/sysv/linux/i386/sysdep.c. Hurd does not have sysdeps/unix/i386 on its search path, so it uses csu/sysdep.c instead.
* hurd: fix ptsname error when called on a non-ttySamuel Thibault2020-05-281-1/+5
| | | | | * sysdeps/mach/hurd/ptsname.c (__ptsname_internal): Replace not-supported errors from __term_get_peername with ENOTTY.
* hurd: Fix fdopendir checking for directory typeSamuel Thibault2020-05-281-1/+1
| | | | | * sysdeps/mach/hurd/fdopendir.c (__fdopendir): Lookup "./" instead of "/" that would designate the root of the filesystem.
* i386: Remove NO_TLS_DIRECT_SEG_REFS handlingFlorian Weimer2020-05-283-44/+0
| | | | | This was needed for 32-bit PV Xen, which has been superseded by this point according to Xen developers.
* Hurd: Move <hurd/sigpreempt.h> internals into wrapper headerFlorian Weimer2020-05-282-10/+32
| | | | | | | | _hurdsig_preemptors and _hurdsig_preempted_set are not ABI symbols, so do not declare them. HURD_PREEMPT_SIGNAL_P is an implementation detail, so move it as well. Reviewed-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
* Hurd: Use __sigmask in favor of deprecated sigmaskFlorian Weimer2020-05-285-11/+11
| | | | | | | | | This fixes various build errors due to deprecation warnings. Fixes commit 02802fafcf6e11ea3f998f685035ffe568dfddeb ("signal: Deprecate additional legacy signal handling functions"). Reviewed-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
* hurd: Fix pselect atomicitySamuel Thibault2020-05-282-10/+70
| | | | | | | | | | | | | | In case the signal arrives before the __mach_msg call, we need to catch between the sigprocmask call and the __mach_msg call. Let's just reuse the support for sigsuspend to make the signal send a message that our __mach_msg call will just receive. * hurd/hurdselect.c (_hurd_select): Add sigport and ss variables. When sigmask is not NULL, create a sigport port and register as ss->suspended. Add it to the portset. When we receive a message on it, set error to EINTR. Clean up sigport and portset appropriately. * hurd/hurdsig.c (wake_sigsuspend): Note that pselect also uses it.
* elf: Remove extra hwcap mechanism from ldconfigFlorian Weimer2020-05-281-71/+16
| | | | | | | | | | | | | | Historically, this mechanism was used to process "nosegneg" subdirectories, and it is still used to include the "tls" subdirectories. With nosegneg support gone from ld.so, this is part no longer useful. The entire mechanism is not well-designed because it causes the meaning of hwcap bits in ld.so.cache to depend on the kernel version that was used to generate the cache, which makes it difficult to use this mechanism for anything else in the future. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* elf: Do not read hwcaps from the vDSO in ld.soFlorian Weimer2020-05-281-110/+0
| | | | | | | | | | This was only ever used for the "nosegneg" flag. This approach for passing hardware capability information creates a subtle dependency between the kernel and userspace, and ld.so.cache contents. It seems inappropriate for toady, where people expect to be able to run system images which very different kernel versions. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* linux: Use internal DIR locks when accessing filepos on telldirAdhemerval Zanella2020-05-271-1/+7
| | | | | | Since it might change during a readdir call. Checked on x86_64-linux-gnu and i686-linux-gnu.
* Update i386 libm-test-ulpsSamuel Thibault2020-05-261-8/+9
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* htl: Add clock variantsSamuel Thibault2020-05-2635-40/+236
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 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.
* signal: Deprecate additional legacy signal handling functionsFlorian Weimer2020-05-2512-33/+57
| | | | | | | | | | This needs a few test adjustments: In some cases, sigignore was used for convenience (replaced with xsignal with SIG_IGN). Tests for the deprecated functions need to disable -Wdeprecated-declarations, and for the sigmask deprecation, -Wno-error. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* elf: Turn _dl_printf, _dl_error_printf, _dl_fatal_printf into functionsFlorian Weimer2020-05-254-13/+40
| | | | | | | | | | | | | | 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>
* x86: Update Intel Atom processor family optimizationH.J. Lu2020-05-211-1/+19
| | | | | | Enable Intel Silvermont optimization for Intel Goldmont Plus. Detect more Intel Airmont processors. Optimize Intel Tremont like Intel Silvermont with rep string instructions.
* elf.h: add aarch64 property definitionsSzabolcs Nagy2020-05-211-0/+6
| | | | | | | These property values are specified by the AArch64 ELF ABI and binutils can create binaries marked with them. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* elf.h: Add PT_GNU_PROPERTYSzabolcs Nagy2020-05-211-0/+1
| | | | | | | This program header type is already used in binaries on x86 and aarch64 targets. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* <libc-symbols.h>: Add libpthread hidden alias supportFlorian Weimer2020-05-201-0/+23
| | | | | Reviewed-by: Carlos O'Donell <carlos@redhat.com> Tested-by: Carlos O'Donell <carlos@redhat.com>
* nptl: Use __pthread_attr_copy in pthread_setattr_default_npFlorian Weimer2020-05-201-38/+15
| | | | | Reviewed-by: Carlos O'Donell <carlos@redhat.com> Tested-by: Carlos O'Donell <carlos@redhat.com>
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