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* linux: Enable vDSO for static linking as default (BZ#19767)Adhemerval Zanella2019-08-051-3/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch assumes static vDSO is supported as default, it is now supported on all current architectures that support vDSO. It allows removing both ALWAYS_USE_VSYSCALL define, which an architecture requires to explicit define and USE_VSYSCALL (which defines vDSO only for shared or if architecture defines ALWAYS_USE_VSYSCALL). Checked with a build against all affected ABIs. [BZ #19767] * sysdeps/unix/sysv/linux/aarch64/sysdep.h (ALWAYS_USE_VSYSCALL): Remove definition. * sysdeps/unix/sysv/linux/arm/sysdep.h (ALWAYS_USE_VSYSCALL): Likewise. * sysdeps/unix/sysv/linux/i386/sysdep.h (ALWAYS_USE_VSYSCALL): Likewise. * sysdeps/unix/sysv/linux/mips/mips32/sysdep.h (ALWAYS_USE_VSYSCALL): Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n32/sysdep.h (ALWAYS_USE_VSYSCALL): Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n64/sysdep.h (ALWAYS_USE_VSYSCALL): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep.h (ALWAYS_USE_VSYSCALL): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep.h (ALWAYS_USE_VSYSCALL): Likewise. * sysdeps/unix/sysv/linux/riscv/sysdep.h (ALWAYS_USE_VSYSCALL): Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/sysdep.h (ALWAYS_USE_VSYSCALL): Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/sysdep.h (ALWAYS_USE_VSYSCALL): Likewise. * sysdeps/unix/sysv/linux/sparc/sysdep.h (ALWAYS_USE_VSYSCALL): Likewise. * sysdeps/unix/sysv/linux/x86_64/sysdep.h (ALWAYS_USE_VSYSCALL): Likewise. * sysdeps/unix/sysv/linux/x86/libc-vdso.h: Remove #if USE_VSYSCALL. * sysdeps/unix/sysv/linux/sysdep-vdso.h: Likewise. * sysdeps/unix/sysv/linux/sysdep.h (ALWAYS_USE_VSYSCALL, USE_VSYSCALL): Remove defitions.
* nptl: Add POSIX-proposed pthread_mutex_clocklockMike Crowe2019-07-121-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add POSIX-proposed pthread_mutex_clocklock function that works like pthread_mutex_timedlock but takes a clockid parameter to measure the abstime parameter against. * sysdeps/nptl/pthread.h: Add pthread_mutex_clocklock. * nptl/DESIGN-systemtap-probes.txt: Likewise. * nptl/pthread_mutex_timedlock.c (__pthread_mutex_clocklock_common): Rename from __pthread_mutex_timedlock and add clockid parameter. Pass this parameter to lll_clocklock and lll_clocklock_elision in place of CLOCK_REALTIME. (__pthread_mutex_clocklock): New function to add LIBC_PROBE and validate clockid parameter before calling __pthread_mutex_clocklock_common. (__pthread_mutex_timedlock): New implementation to add LIBC_PROBE and calls __pthread_mutex_clocklock_common passing CLOCK_REALTIME as the clockid. * nptl/Makefile: Add tst-mutex11.c. * nptl/tst-abstime.c (th): Add tests for pthread_mutex_clocklock. * nptl/tst-mutex11.c: New tests for passing invalid and unsupported clockid parameters to pthread_mutex_clocklock. * nptl/tst-mutex5.c (do_test_clock): Rename from do_test and take clockid parameter to indicate which clock to be used. Call pthread_mutex_timedlock or pthread_mutex_clocklock as appropriate. (do_test): Call do_test_clock to separately test pthread_mutex_timedlock, pthread_mutex_clocklock(CLOCK_REALTIME) and pthread_mutex_clocklock(CLOCK_MONOTONIC). * nptl/tst-mutex9.c: Likewise. * nptl/Versions (GLIBC_2.30): Add pthread_mutex_clocklock. * sysdeps/unix/sysv/linux/aarch64/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/alpha/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/arm/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/csky/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/hppa/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/i386/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/ia64/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/m68k/coldfire/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/m68k/m680x0/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/microblaze/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/mips/mips32/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/mips/mips64/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/nios2/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/riscv/rv64/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/sh/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/x86_64/64/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/x86_64/x32/libpthread.abilist (GLIBC_2.30): Likewise. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* nptl: Add POSIX-proposed pthread_rwlock_clockrdlock & pthread_rwlock_clockwrlockMike Crowe2019-07-121-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add: int pthread_rwlock_clockrdlock (pthread_rwlock_t *rwlock, clockid_t clockid, const struct timespec *abstime) and: int pthread_rwlock_clockwrlock (pthread_rwlock_t *rwlock, clockid_t clockid, const struct timespec *abstime) which behave like pthread_rwlock_timedrdlock and pthread_rwlock_timedwrlock respectively, except they always measure abstime against the supplied clockid. The functions currently support CLOCK_REALTIME and CLOCK_MONOTONIC and return EINVAL if any other clock is specified. * sysdeps/nptl/pthread.h: Add pthread_rwlock_clockrdlock and pthread_wrlock_clockwrlock. * nptl/Makefile: Build pthread_rwlock_clockrdlock.c and pthread_rwlock_clockwrlock.c. * nptl/pthread_rwlock_clockrdlock.c: Implement pthread_rwlock_clockrdlock. * nptl/pthread_rwlock_clockwrlock.c: Implement pthread_rwlock_clockwrlock. * nptl/pthread_rwlock_common.c (__pthread_rwlock_rdlock_full): Add clockid parameter and verify that it indicates a supported clock on entry so that we fail even if it doesn't end up being used. Pass that clock on to futex_abstimed_wait when necessary. (__pthread_rwlock_wrlock_full): Likewise. * nptl/pthread_rwlock_rdlock.c: (__pthread_rwlock_rdlock): Pass CLOCK_REALTIME to __pthread_rwlock_rdlock_full even though it won't be used because there's no timeout. * nptl/pthread_rwlock_wrlock.c (__pthread_rwlock_wrlock): Pass CLOCK_REALTIME to __pthread_rwlock_wrlock_full even though it won't be used because there is no timeout. * nptl/pthread_rwlock_timedrdlock.c (pthread_rwlock_timedrdlock): Pass CLOCK_REALTIME to __pthread_rwlock_rdlock_full since abstime uses that clock. * nptl/pthread_rwlock_timedwrlock.c (pthread_rwlock_timedwrlock): Pass CLOCK_REALTIME to __pthread_rwlock_wrlock_full since abstime uses that clock. * sysdeps/unix/sysv/linux/aarch64/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/alpha/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/arm/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/csky/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/hppa/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/i386/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/ia64/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/m68k/coldfire/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/m68k/m680x0/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/microblaze/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/mips/mips32/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/mips/mips64/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/nios2/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/riscv/rv64/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/sh/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/x86_64/64/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/x86_64/x32/libpthread.abilist (GLIBC_2.30): Likewise. * nptl/tst-abstime.c (th): Add pthread_rwlock_clockrdlock and pthread_rwlock_clockwrlock timeout tests to match the existing pthread_rwlock_timedrdloock and pthread_rwlock_timedwrlock tests. * nptl/tst-rwlock14.c (do_test): Likewise. * nptl/tst-rwlock6.c Invent verbose_printf macro, and use for ancillary output throughout. (tf): Accept thread_args structure so that rwlock, a clockid and function name can be passed to the thread. (do_test_clock): Rename from do_test. Accept clockid parameter to specify test clock. Use the magic clockid value of CLOCK_USE_TIMEDLOCK to indicate that pthread_rwlock_timedrdlock and pthread_rwlock_timedwrlock should be tested, otherwise pass the specified clockid to pthread_rwlock_clockrdlock and pthread_rwlock_clockwrlock. Use xpthread_create and xpthread_join. (do_test): Call do_test_clock to test each clockid in turn. * nptl/tst-rwlock7.c: Likewise. * nptl/tst-rwlock9.c (writer_thread, reader_thread): Accept thread_args structure so that the (now int) thread number, the clockid and the function name can be passed to the thread. (do_test_clock): Renamed from do_test. Pass the necessary thread_args when creating the reader and writer threads. Use xpthread_create and xpthread_join. (do_test): Call do_test_clock to test each clockid in turn. * manual/threads.texi: Add documentation for pthread_rwlock_clockrdlock and pthread_rwlock_clockwrclock. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* nptl: Add POSIX-proposed pthread_cond_clockwaitMike Crowe2019-07-121-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add: int pthread_cond_clockwait (pthread_cond_t *cond, pthread_mutex_t *mutex, clockid_t clockid, const struct timespec *abstime) which behaves just like pthread_cond_timedwait except it always measures abstime against the supplied clockid. Currently supports CLOCK_REALTIME and CLOCK_MONOTONIC and returns EINVAL if any other clock is specified. Includes feedback from many others. This function was originally proposed[1] as pthread_cond_timedwaitonclock_np, but The Austin Group preferred the new name. * nptl/Makefile: Add tst-cond26 and tst-cond27 * nptl/Versions (GLIBC_2.30): Add pthread_cond_clockwait * sysdeps/nptl/pthread.h: Likewise * nptl/forward.c: Add __pthread_cond_clockwait * nptl/forward.c: Likewise * nptl/pthreadP.h: Likewise * sysdeps/nptl/pthread-functions.h: Likewise * nptl/pthread_cond_wait.c (__pthread_cond_wait_common): Add clockid parameter and comment describing why we don't need to check its value. Use that value when calling futex_abstimed_wait_cancelable rather than reading the clock from the flags. (__pthread_cond_wait): Pass unused clockid parameter. (__pthread_cond_timedwait): Read clock from flags and pass it to __pthread_cond_wait_common. (__pthread_cond_clockwait): Add new function with weak alias from pthread_cond_clockwait. * sysdeps/mach/hurd/i386/libpthread.abilist (GLIBC_2.30): * Likewise. * sysdeps/unix/sysv/linux/aarch64/libpthread.abilist * (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/alpha/libpthread.abilist (GLIBC_2.30): * Likewise. * sysdeps/unix/sysv/linux/arm/libpthread.abilist (GLIBC_2.30): * Likewise. * sysdeps/unix/sysv/linux/csky/libpthread.abilist (GLIBC_2.30): * Likewise. * sysdeps/unix/sysv/linux/hppa/libpthread.abilist (GLIBC_2.30): * Likewise. * sysdeps/unix/sysv/linux/i386/libpthread.abilist (GLIBC_2.30): * Likewise. * sysdeps/unix/sysv/linux/ia64/libpthread.abilist (GLIBC_2.30): * Likewise. * sysdeps/unix/sysv/linux/m68k/coldfire/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/m68k/m680x0/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/microblaze/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/mips/mips32/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/mips/mips64/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/nios2/libpthread.abilist (GLIBC_2.30): * Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/riscv/rv64/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/sh/libpthread.abilist (GLIBC_2.30): * Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/x86_64/64/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/x86_64/x32/libpthread.abilist (GLIBC_2.30): Likewise. * nptl/tst-cond11.c (run_test): Support testing pthread_cond_clockwait too by using a special magic CLOCK_USE_ATTR_CLOCK value to determine whether to call pthread_cond_timedwait or pthread_cond_clockwait. (do_test): Pass CLOCK_USE_ATTR_CLOCK for existing tests, and add new tests using all combinations of CLOCK_MONOTONIC and CLOCK_REALTIME. * ntpl/tst-cond26.c: New test for passing unsupported and * invalid clocks to pthread_cond_clockwait. * nptl/tst-cond27.c: Add test similar to tst-cond5.c, but using struct timespec and pthread_cond_clockwait. * manual/threads.texi: Document pthread_cond_clockwait. The * comment was provided by Carlos O'Donell. [1] https://sourceware.org/ml/libc-alpha/2015-07/msg00193.html Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* nptl: Add POSIX-proposed sem_clockwaitMike Crowe2019-07-121-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add: int sem_clockwait (sem_t *sem, clockid_t clock, const struct timespec *abstime) which behaves just like sem_timedwait, but measures abstime against the specified clock. Currently supports CLOCK_REALTIME and CLOCK_MONOTONIC and sets errno == EINVAL if any other clock is specified. * nptl/sem_waitcommon.c (do_futex_wait, __new_sem_wait_slow): Add clockid parameters to indicate the clock which abstime should be measured against. * nptl/sem_timedwait.c (sem_timedwait), nptl/sem_wait.c (__new_sem_wait): Pass CLOCK_REALTIME as clockid to __new_sem_wait_slow. * nptl/sem_clockwait.c: New file to implement sem_clockwait based on sem_timedwait.c. * nptl/Makefile: Add sem_clockwait.c source file. Add CFLAGS for sem_clockwait.c to match those used for sem_timedwait.c. * sysdeps/pthread/semaphore.h: Add sem_clockwait. * nptl/Versions (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/aarch64/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/alpha/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/arm/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/csky/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/hppa/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/i386/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/ia64/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/m68k/coldfire/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/m68k/m680x0/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/microblaze/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/mips/mips32/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/mips/mips64/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/nios2/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/riscv/rv64/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/sh/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/x86_64/64/libpthread.abilist (GLIBC_2.30): Likewise. * sysdeps/unix/sysv/linux/x86_64/x32/libpthread.abilist (GLIBC_2.30): Likewise. * nptl/tst-sem17.c: Add new test for passing invalid clock to sem_clockwait. * nptl/tst-sem13.c, nptl/tst-sem5.c: Modify existing sem_timedwait tests to also test sem_clockwait. * manual/threads.texi: Document sem_clockwait. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* nptl: Remove vfork IFUNC-based forwarder from libpthread [BZ #20188]Florian Weimer2019-07-021-2/+0
| | | | | | | | | | | | | | | | | | | | | With commit f0b2132b35248c1f4a80f62a2c38cddcc802aa8c ("ld.so: Support moving versioned symbols between sonames [BZ #24741]"), the dynamic linker will find the definition of vfork in libc and binds a vfork reference to that symbol, even if the soname in the version reference says that the symbol should be located in libpthread. As a result, the forwarder (whether it's IFUNC-based or a duplicate of the libc implementation) is no longer necessary. On older architectures, a placeholder symbol is required, to make sure that the GLIBC_2.1.2 symbol version does not go away, or is turned in to a weak symbol definition by the link editor. (The symbol version needs to preserved so that the symbol coverage check in elf/dl-version.c does not fail for old binaries.) mips32 is an outlier: It defined __vfork@@GLIBC_2.2, but the baseline is GLIBC_2.0. Since there are other @@GLIBC_2.2 symbols, the placeholder symbol is not needed there.
* io: Remove copy_file_range emulation [BZ #24744]Florian Weimer2019-06-281-1/+0
| | | | | | | | | | The kernel is evolving this interface (e.g., removal of the restriction on cross-device copies), and keeping up with that is difficult. Applications which need the function should run kernels which support the system call instead of relying on the imperfect glibc emulation. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* Linux: Add getdents64 system callFlorian Weimer2019-06-071-0/+1
| | | | | | | | | | | No 32-bit system call wrapper is added because the interface is problematic because it cannot deal with 64-bit inode numbers and 64-bit directory hashes. A future commit will deprecate the undocumented getdirentries and getdirentries64 functions. Reviewed-by: Carlos O'Donell <carlos@redhat.com>
* arm: Remove ioperm/iopl/inb/inw/inl/outb/outw/outl supportFlorian Weimer2019-06-013-176/+33
| | | | | | | | Linux only supports the required ISA sysctls on StrongARM devices, which are armv4 and no longer tested during glibc development and probably bit-rotted by this point. (No reported test results, and the last discussion of armv4 support was in the glibc 2.19 release notes.)
* Linux: Add the tgkill functionFlorian Weimer2019-05-141-0/+1
| | | | | | | | | The tgkill function is sometimes used in crash handlers. <bits/signal_ext.h> follows the same approach as <bits/unistd_ext.h> (which was added for the gettid system call wrapper). Reviewed-by: Carlos O'Donell <carlos@redhat.com>
* misc: Add twalk_r functionFlorian Weimer2019-05-021-0/+1
| | | | | | | | | The twalk function is very difficult to use in a multi-threaded program because there is no way to pass external state to the iterator function. Reviewed-by: Carlos O'Donell <carlos@redhat.com> Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* Fix output of LD_SHOW_AUXV=1.Stefan Liebler2019-03-131-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Starting with commit 1616d034b61622836d3a36af53dcfca7624c844e the output was corrupted on some platforms as _dl_procinfo was called for every auxv entry and on some architectures like s390 all entries were represented as "AT_HWCAP". This patch is removing the condition and let _dl_procinfo decide if an entry is printed in a platform specific or generic way. This patch also adjusts all _dl_procinfo implementations which assumed that they are only called for AT_HWCAP or AT_HWCAP2. They are now just returning a non-zero-value for entries which are not handled platform specifc. ChangeLog: * elf/dl-sysdep.c (_dl_show_auxv): Remove condition and always call _dl_procinfo. * sysdeps/unix/sysv/linux/s390/dl-procinfo.h (_dl_procinfo): Ignore types other than AT_HWCAP. * sysdeps/sparc/dl-procinfo.h (_dl_procinfo): Likewise. * sysdeps/unix/sysv/linux/i386/dl-procinfo.h (_dl_procinfo): Likewise. * sysdeps/powerpc/dl-procinfo.h (_dl_procinfo): Adjust comment in the case of falling back to generic output mechanism. * sysdeps/unix/sysv/linux/arm/dl-procinfo.h (_dl_procinfo): Likewise.
* Add some spaces before '('.Joseph Myers2019-02-272-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes various places where a space should have been present before '(' in accordance with the GNU Coding Standards. Most but not all of the fixes in this patch are for calls to sizeof (but it's not exhaustive regarding such calls that should be fixed). Tested for x86_64, and with build-many-glibcs.py. * benchtests/bench-strcpy.c (do_test): Use space before '('. * benchtests/bench-string.h (cmdline_process_function): Likewise. * benchtests/bench-strlen.c (do_test): Likewise. (test_main): Likewise. * catgets/gencat.c (read_old): Likewise. * elf/cache.c (load_aux_cache): Likewise. * iconvdata/bug-iconv8.c (do_test): Likewise. * math/test-tgmath-ret.c (do_test): Likewise. * nis/nis_call.c (rec_dirsearch): Likewise. * nis/nis_findserv.c (__nis_findfastest_with_timeout): Likewise. * nptl/tst-audit-threads.c (do_test): Likewise. * nptl/tst-cancel4-common.h (set_socket_buffer): Likewise. * nss/nss_test1.c (init): Likewise. * nss/test-netdb.c (test_hosts): Likewise. * posix/execvpe.c (maybe_script_execute): Likewise. * stdio-common/tst-fmemopen4.c (do_test): Likewise. * stdio-common/tst-printf.c (do_test): Likewise. * stdio-common/vfscanf-internal.c (__vfscanf_internal): Likewise. * stdlib/fmtmsg.c (NKEYWORDS): Likewise. * stdlib/qsort.c (STACK_SIZE): Likewise. * stdlib/test-canon.c (do_test): Likewise. * stdlib/tst-swapcontext1.c (do_test): Likewise. * string/memcmp.c (OPSIZ): Likewise. * string/test-strcpy.c (do_test): Likewise. (do_random_tests): Likewise. * string/test-strlen.c (do_test): Likewise. (test_main): Likewise. * string/test-strrchr.c (do_test): Likewise. (do_random_tests): Likewise. * string/tester.c (test_memrchr): Likewise. (test_memchr): Likewise. * sysdeps/generic/memcopy.h (OPSIZ): Likewise. * sysdeps/generic/unwind-dw2.c (execute_stack_op): Likewise. * sysdeps/generic/unwind-pe.h (read_sleb128): Likewise. (read_encoded_value_with_base): Likewise. * sysdeps/hppa/dl-machine.h (elf_machine_runtime_setup): Likewise. * sysdeps/hppa/fpu/feupdateenv.c (__feupdateenv): Likewise. * sysdeps/ia64/fpu/sfp-machine.h (TI_BITS): Likewise. * sysdeps/mach/hurd/spawni.c (__spawni): Likewise. * sysdeps/posix/spawni.c (maybe_script_execute): Likewise. * sysdeps/powerpc/fpu/tst-setcontext-fpscr.c (query_auxv): Likewise. * sysdeps/unix/sysv/linux/aarch64/bits/procfs.h (ELF_NGREG): Likewise. * sysdeps/unix/sysv/linux/arm/bits/procfs.h (ELF_NGREG): Likewise. * sysdeps/unix/sysv/linux/arm/ioperm.c (init_iosys): Likewise. * sysdeps/unix/sysv/linux/csky/bits/procfs.h (ELF_NGREG): Likewise. * sysdeps/unix/sysv/linux/m68k/bits/procfs.h (ELF_NGREG): Likewise. * sysdeps/unix/sysv/linux/nios2/bits/procfs.h (ELF_NGREG): Likewise. * sysdeps/unix/sysv/linux/spawni.c (maybe_script_execute): Likewise. * sysdeps/unix/sysv/linux/x86/bits/procfs.h (ELF_NGREG): Likewise. * sysdeps/unix/sysv/linux/x86/bits/sigcontext.h (FP_XSTATE_MAGIC2_SIZE): Likewise. * sysdeps/x86/fpu/sfp-machine.h (TI_BITS): Likewise. * time/test_time.c (main): Likewise.
* io: Consolidate lockf implementationAdhemerval Zanella2019-02-151-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With internal fcntl64 internal (commit 06ab719d), it is possible to consolidate lockf implementation by using the LFS fcntl interface instead of using arch and system-specific implementations. For Linux, the i386 implementation is used as generic implementation by replacing the direct syscall with fcntl64 call. The LFS symbol alias for default LFS ABI (__OFF_T_MATCHES_OFF64_T) is used to avoid the duplicate symbol (instead of overriding the implementation with an empty file). For Hurd lockf64 semantic is changed: previous generic lockf64 implementation returned EOVERFLOW if LEN input is larger than 32-bit off_t. However, Hurd fcntl64 implementation for F_GETLK64, F_SETLK64, and F_SETLKW64 do accept off64_t inputs (__f_setlk accepts only off64_t inputs). Checked on i686-linux-gnu and x86_64-linux-gnu along with a i686-gnu build. * io/Makefile (tests): Add tst-lockf. * io/lockf.c (lockf): Use __fcntl and only define for !__OFF_T_MATCHES_OFF64_T. * io/lockf64.c (__lockf64): Call __fcntl64 and alias to lockf for __OFF_T_MATCHES_OFF64_T case. * io/tst-lockf.c: New file. * sysdeps/unix/sysv/linux/i386/lockf64.c: Remove file. * sysdeps/unix/sysv/linux/arm/lockf64.c: Likewise. * sysdeps/unix/sysv/linux/m68k/lockf64.c: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/lockf64.c: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n32/lockf64.c: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/lockf64.c: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/lockf64.c: Likewise. * sysdeps/unix/sysv/linux/sh/lockf64.c: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/lockf64.c: Likewise.
* Linux: Add gettid system call wrapper [BZ #6399]Florian Weimer2019-02-081-0/+1
| | | | | | | | | | This commit adds gettid to <unistd.h> on Linux, and not to the kernel-independent GNU API. gettid is now supportable on Linux because too many things assume a 1:1 mapping between libpthread threads and kernel threads. Reviewed-by: Carlos O'Donell <carlos@redhat.com>
* ARM: fix kernel assisted atomics with GCC 8 (bug 24034)Aurelien Jarno2019-01-021-5/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The pre-ARMv7 CPUs are missing atomic compare and exchange and/or barrier instructions. Therefore those are implemented using kernel assistance, calling a kernel function at a specific address, and passing the arguments in the r0 to r4 registers. This is done by specifying registers for local variables. The a_ptr variable is placed in the r2 register and declared with __typeof (mem). According to the GCC documentation on local register variables, if mem is a constant pointer, the compiler may substitute the variable with its initializer in asm statements, which may cause the corresponding operand to appear in a different register. This happens in __libc_start_main with the pointer to the thread counter for static binaries (but not the shared ones): # ifdef SHARED unsigned int *ptr = __libc_pthread_functions.ptr_nthreads; # ifdef PTR_DEMANGLE PTR_DEMANGLE (ptr); # endif # else extern unsigned int __nptl_nthreads __attribute ((weak)); unsigned int *const ptr = &__nptl_nthreads; # endif This causes static binaries using threads to crash when the GNU libc is built with GCC 8 and most notably tst-cancel21-static. To fix that, use the same trick than for the volatile qualifier, defining a_ptr as a union. Changelog: [BZ #24034] * sysdeps/unix/sysv/linux/arm/atomic-machine.h (__arm_assisted_compare_and_exchange_val_32_acq): Use uint32_t rather than __typeof (...) for the a_ptr variable.
* Update copyright dates with scripts/update-copyrights.Joseph Myers2019-01-0142-42/+42
| | | | | | | * All files with FSF copyright notices: Update copyright dates using scripts/update-copyrights. * locale/programs/charmap-kw.h: Regenerated. * locale/programs/locfile-kw.h: Likewise.
* Add getcpuH.J. Lu2018-12-071-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add #include <sched.h> int getcpu (unsigned int *cpu, unsigned int *node); to return currently used CPU and NUMA node. Tested on x86-64, x32 and i686 as well as with build-many-glibcs.py. * NEWS: Mention getcpu. * include/sched.h (__getcpu): New libc_hidden_proto. * manual/resource.texi: Document getcpu. * sysdeps/unix/sysv/linux/Makefile (sysdep_routines): Add getcpu. * sysdeps/unix/sysv/linux/Versions (GLIBC_2.29): Add getcpu. * sysdeps/unix/sysv/linux/aarch64/libc.abilist: Add getcpu. * sysdeps/unix/sysv/linux/alpha/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/arm/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/hppa/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/i386/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/ia64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/microblaze/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/nios2/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/sh/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/bits/sched.h (getcpu): New prototype. * sysdeps/unix/sysv/linux/getcpu.c: New file. * sysdeps/unix/sysv/linux/tst-skeleton-affinity.c (test_size): Also check getcpu.
* posix: New function posix_spawn_file_actions_addfchdir_np [BZ #17405]Florian Weimer2018-12-071-0/+1
| | | | | | Along with posix_spawn_file_actions_addchdir, posix_spawn_file_actions_addfchdir is the subject of a change proposal for POSIX: <http://austingroupbugs.net/view.php?id=1208>
* Enable VDSO for static linking on armRafael Ávila de Espíndola2018-12-033-10/+8
| | | | | | | | | | | | I have tested that this builds and the resulting program still work. The kernel in gcc117 (which I ussed for testing) seems to be missing https://patchwork.kernel.org/patch/10060431/, so the vdso is never used. [BZ #19767] * sysdeps/unix/sysv/linux/arm/init-first.c: Remove #ifdef SHARED. * sysdeps/unix/sysv/linux/arm/libc-vdso.h: Remove #ifdef SHARED. * sysdeps/unix/sysv/linux/arm/sysdep.h: Define ALWAYS_USE_VSYSCALL.
* Fix Arm __ASSUME_COPY_FILE_RANGE (bug 23915).Joseph Myers2018-11-231-3/+4
| | | | | | | | | | | | | | | | | The generic kernel-features.h defines __ASSUME_COPY_FILE_RANGE for 4.5 and later kernels. However, for 32-bit Arm binaries running on 64-bit Arm kernels, the syscall was only wired up in the 4.7 kernel, although the 32-bit Arm kernel had the syscall from 4.5 onwards. This patch corrects the Arm kernel-features.h to undefine the macro for configured minimum kernel versions before 4.7. Tested (compilation only) with a build-many-glibcs.py build for arm-linux-gnueabi. [BZ #23915] * sysdeps/unix/sysv/linux/arm/kernel-features.h [__LINUX_KERNEL_VERSION < 0x040700] (__ASSUME_COPY_FILE_RANGE): Undefine.
* Remove the error handling wrapper from powSzabolcs Nagy2018-11-211-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Introduce new pow symbol version that doesn't do SVID compatible error handling. The standard errno and fp exception based error handling is inline in the new code and does not have significant overhead. The wrapper is disabled for sysdeps/ieee754/dbl-64 by using empty w_pow.c and enabled for targets with their own pow implementation or ifunc dispatch on __ieee754_pow by including math/w_pow.c. The compatibility symbol version still uses the wrapper with SVID error handling around the new code. There is no new symbol version nor compatibility code on !LIBM_SVID_COMPAT targets (e.g. riscv). On targets where previously powl was an alias of pow, now it points to the compatibility symbol with the wrapper, because it still need the SVID compatible error handling. This affects NO_LONG_DOUBLE (e.g. arm) and LONG_DOUBLE_COMPAT (e.g. alpha) targets as well. The __pow_finite symbol is now an alias of pow. Both __pow_finite and pow set errno and thus not const functions. The ia64 asm is changed so the compat and new symbol versions map to the same address. On x86_64 #include <math.h> was added before macro definitions that may affect that header. Tested with build-many-glibcs.py. * math/Versions (GLIBC_2.29): Add pow. * math/w_pow_compat.c (__pow_compat): Change to versioned compat symbol. * math/w_pow.c: New file. * sysdeps/i386/fpu/w_pow.c: New file. * sysdeps/ia64/fpu/e_pow.S: Add versioned symbols. * sysdeps/ieee754/dbl-64/e_pow.c (__ieee754_pow): Rename to __pow and add necessary aliases. * sysdeps/ieee754/dbl-64/w_pow.c: New file. * sysdeps/m68k/m680x0/fpu/w_pow.c: New file. * sysdeps/mach/hurd/i386/libm.abilist: Update. * sysdeps/unix/sysv/linux/aarch64/libm.abilist: Update. * sysdeps/unix/sysv/linux/alpha/libm.abilist: Update. * sysdeps/unix/sysv/linux/arm/libm.abilist: Update. * sysdeps/unix/sysv/linux/hppa/libm.abilist: Update. * sysdeps/unix/sysv/linux/i386/libm.abilist: Update. * sysdeps/unix/sysv/linux/ia64/libm.abilist: Update. * sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Update. * sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Update. * sysdeps/unix/sysv/linux/microblaze/libm.abilist: Update. * sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Update. * sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Update. * sysdeps/unix/sysv/linux/nios2/libm.abilist: Update. * sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist: Update. * sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist: Update. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist: Update. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist: Update. * sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Update. * sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Update. * sysdeps/unix/sysv/linux/sh/libm.abilist: Update. * sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Update. * sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Update. * sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Update. * sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Update. * sysdeps/x86_64/fpu/multiarch/e_pow-fma.c (__ieee754_pow): Rename to __pow. * sysdeps/x86_64/fpu/multiarch/e_pow-fma4.c (__ieee754_pow): Likewise. * sysdeps/x86_64/fpu/multiarch/e_pow.c (__ieee754_pow): Likewise. * sysdeps/x86_64/fpu/multiarch/w_pow.c: New file.
* Remove the error handling wrapper from log2Szabolcs Nagy2018-11-211-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Introduce new log2 symbol version that doesn't do SVID compatible error handling. The standard errno and fp exception based error handling is inline in the new code and does not have significant overhead. The wrapper is disabled for sysdeps/ieee754/dbl-64 by using empty w_log2.c and enabled for targets with their own log2 implementation by including math/w_log2.c. The compatibility symbol version still uses the wrapper with SVID error handling around the new code. There is no new symbol version nor compatibility code on !LIBM_SVID_COMPAT targets (e.g. riscv). On targets where previously log2l was an alias of log2, now it points to the compatibility symbol with the wrapper, because it still need the SVID compatible error handling. This affects NO_LONG_DOUBLE (e.g. arm) and LONG_DOUBLE_COMPAT (e.g. alpha) targets as well. The __log2_finite symbol is now an alias of log2. Both __log2_finite and log2 set errno and thus not const functions. The ia64 asm is changed so the compat and new symbol versions map to the same address. Tested with build-many-glibcs.py. * math/Versions (GLIBC_2.29): Add log2. * math/w_log2_compat.c (__log2_compat): Change to versioned compat symbol. * math/w_log2.c: New file. * sysdeps/i386/fpu/w_log2.c: New file. * sysdeps/ia64/fpu/e_log2.S: Add versioned symbols. * sysdeps/ieee754/dbl-64/e_log2.c (__ieee754_log2): Rename to __log2 and add necessary aliases. * sysdeps/ieee754/dbl-64/w_log2.c: New file. * sysdeps/m68k/m680x0/fpu/w_log2.c: New file. * sysdeps/mach/hurd/i386/libm.abilist: Update. * sysdeps/unix/sysv/linux/aarch64/libm.abilist: Update. * sysdeps/unix/sysv/linux/alpha/libm.abilist: Update. * sysdeps/unix/sysv/linux/arm/libm.abilist: Update. * sysdeps/unix/sysv/linux/hppa/libm.abilist: Update. * sysdeps/unix/sysv/linux/i386/libm.abilist: Update. * sysdeps/unix/sysv/linux/ia64/libm.abilist: Update. * sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Update. * sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Update. * sysdeps/unix/sysv/linux/microblaze/libm.abilist: Update. * sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Update. * sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Update. * sysdeps/unix/sysv/linux/nios2/libm.abilist: Update. * sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist: Update. * sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist: Update. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist: Update. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist: Update. * sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Update. * sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Update. * sysdeps/unix/sysv/linux/sh/libm.abilist: Update. * sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Update. * sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Update. * sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Update. * sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Update.
* Remove the error handling wrapper from logSzabolcs Nagy2018-11-211-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Introduce new log symbol version that doesn't do SVID compatible error handling. The standard errno and fp exception based error handling is inline in the new code and does not have significant overhead. The wrapper is disabled for sysdeps/ieee754/dbl-64 by using empty w_log.c and enabled for targets with their own log implementation by including math/w_log.c. The compatibility symbol version still uses the wrapper with SVID error handling around the new code. There is no new symbol version nor compatibility code on !LIBM_SVID_COMPAT targets (e.g. riscv). On targets where previously logl was an alias of log, now it points to the compatibility symbol with the wrapper, because it still need the SVID compatible error handling. This affects NO_LONG_DOUBLE (e.g. arm) and LONG_DOUBLE_COMPAT (e.g. alpha) targets as well. The __log_finite symbol is now an alias of log. Both __log_finite and log set errno and thus not const functions. The ia64 asm is changed so the compat and new symbol versions map to the same address. On x86_64 #include <math.h> was added before macro definitions that may affect that header. Tested with build-many-glibcs.py. * math/Versions (GLIBC_2.29): Add log. * math/w_log_compat.c (__log_compat): Change to versioned compat symbol. * math/w_log.c: New file. * sysdeps/i386/fpu/w_log.c: New file. * sysdeps/ia64/fpu/e_log.S: Update. * sysdeps/ieee754/dbl-64/e_log.c (__ieee754_log): Rename to __log and add necessary aliases. * sysdeps/ieee754/dbl-64/w_log.c: New file. * sysdeps/m68k/m680x0/fpu/w_log.c: New file. * sysdeps/mach/hurd/i386/libm.abilist: Update. * sysdeps/unix/sysv/linux/aarch64/libm.abilist: Update. * sysdeps/unix/sysv/linux/alpha/libm.abilist: Update. * sysdeps/unix/sysv/linux/arm/libm.abilist: Update. * sysdeps/unix/sysv/linux/hppa/libm.abilist: Update. * sysdeps/unix/sysv/linux/i386/libm.abilist: Update. * sysdeps/unix/sysv/linux/ia64/libm.abilist: Update. * sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Update. * sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Update. * sysdeps/unix/sysv/linux/microblaze/libm.abilist: Update. * sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Update. * sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Update. * sysdeps/unix/sysv/linux/nios2/libm.abilist: Update. * sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist: Update. * sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist: Update. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist: Update. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist: Update. * sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Update. * sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Update. * sysdeps/unix/sysv/linux/sh/libm.abilist: Update. * sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Update. * sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Update. * sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Update. * sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Update. * sysdeps/x86_64/fpu/multiarch/e_log-avx.c (__ieee754_log): Rename to __log. * sysdeps/x86_64/fpu/multiarch/e_log-fma.c (__ieee754_log): Likewise. * sysdeps/x86_64/fpu/multiarch/e_log-fma4.c (__ieee754_log): Likewise. * sysdeps/x86_64/fpu/multiarch/e_log.c (__ieee754_log): Likewise. * sysdeps/x86_64/fpu/multiarch/w_log.c: New file.
* Remove the error handling wrapper from exp and exp2Szabolcs Nagy2018-11-211-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Introduce new exp and exp2 symbol version that don't do SVID compatible error handling. The standard errno and fp exception based error handling is inline in the new code and does not have significant overhead. The double precision wrappers are disabled for sysdeps/ieee754/dbl-64 by using empty w_exp.c and w_exp2.c files, the math/w_exp.c and math/w_exp2.c files use the wrapper template and can be included by targets that have their own exp and exp2 implementations or use ifunc on the glibc internal __ieee754_exp symbol. The compatibility symbol versions still use the wrapper with SVID error handling around the new code. There is no new symbol version nor compatibility code on !LIBM_SVID_COMPAT targets (e.g. riscv). On targets where previously expl and exp2l were aliases of exp and exp2, now they point to the compatibility symbols with the wrapper, because they still need the SVID compatible error handling. This affects NO_LONG_DOUBLE (e.g arm) and LONG_DOUBLE_COMPAT (e.g. alpha) targets as well. The _finite symbols are now aliases of the standard symbols (they have no performance advantage anymore). Both the standard symbols and _finite symbols set errno and thus not const functions. The ia64 asm is changed so the compat and new symbol versions map to the same address. On x86_64 #include <math.h> was added before macro definitions that may affect that header (the new macro name is __exp instead of __ieee754_exp which breaks some math.h macros). Tested with build-many-glibcs.py. * math/Versions (GLIBC_2.29): Add exp and exp2. * math/w_exp2_compat.c (__exp2_compat): Change to versioned compat symbol, handle NO_LONG_DOUBLE and LONG_DOUBLE_COMPAT explicitly. * math/w_exp_compat.c (__exp_compat): Likewise. * math/w_exp.c: New file. * math/w_exp2.c: New file. * sysdeps/i386/fpu/w_exp.c: New file. * sysdeps/i386/fpu/w_exp2.c: New file. * sysdeps/ia64/fpu/e_exp.S: Add versioned symbols. * sysdeps/ia64/fpu/e_exp2.S: Likewise. * sysdeps/ieee754/dbl-64/e_exp.c (__ieee754_exp): Rename to __exp and add necessary aliases. * sysdeps/ieee754/dbl-64/e_exp2.c (__ieee754_exp2): Rename to __exp2 and add necessary aliases. * sysdeps/ieee754/dbl-64/w_exp.c: New file. * sysdeps/ieee754/dbl-64/w_exp2.c: New file. * sysdeps/m68k/m680x0/fpu/w_exp.c: New file. * sysdeps/m68k/m680x0/fpu/w_exp2.c: New file. * sysdeps/mach/hurd/i386/libm.abilist: Update. * sysdeps/unix/sysv/linux/aarch64/libm.abilist: Update. * sysdeps/unix/sysv/linux/alpha/libm.abilist: Update. * sysdeps/unix/sysv/linux/arm/libm.abilist: Update. * sysdeps/unix/sysv/linux/hppa/libm.abilist: Update. * sysdeps/unix/sysv/linux/i386/libm.abilist: Update. * sysdeps/unix/sysv/linux/ia64/libm.abilist: Update. * sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Update. * sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Update. * sysdeps/unix/sysv/linux/microblaze/libm.abilist: Update. * sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Update. * sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Update. * sysdeps/unix/sysv/linux/nios2/libm.abilist: Update. * sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist: Update. * sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist: Update. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist: Update. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist: Update. * sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Update. * sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Update. * sysdeps/unix/sysv/linux/sh/libm.abilist: Update. * sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Update. * sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Update. * sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Update. * sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Update. * sysdeps/x86_64/fpu/multiarch/e_exp-avx.c (__exp1): Remove. (__ieee754_exp): Rename to __exp. * sysdeps/x86_64/fpu/multiarch/e_exp-fma.c (__exp1): Remove. (__ieee754_exp): Rename to __exp. * sysdeps/x86_64/fpu/multiarch/e_exp-fma4.c (__exp1): Remove. (__ieee754_exp): Rename to __exp. * sysdeps/x86_64/fpu/multiarch/e_exp.c (__ieee754_exp): Rename to __exp. * sysdeps/x86_64/fpu/multiarch/w_exp.c: New file.
* Fix __ASSUME_MLOCK2 for ARM, MicroBlaze (bug 23867).Joseph Myers2018-11-071-0/+7
| | | | | | | | | | | | | | | | | | The generic kernel-features.h defines __ASSUME_MLOCK2 for 4.4 and later kernels. However, for 32-bit ARM binaries running on 64-bit ARM kernels, and for MicroBlaze, the syscall was only wired up in the 4.7 kernel. (32-bit ARM kernels did have the syscall from 4.4 onwards.) This patch duly arranges for the macro to be undefined for those architectures for kernels before 4.7. Tested with build-many-glibcs.py for its ARM and MicroBlaze configurations. [BZ #23867] * sysdeps/unix/sysv/linux/arm/kernel-features.h [__LINUX_KERNEL_VERSION < 0x040700] (__ASSUME_MLOCK2): Undefine. * sysdeps/unix/sysv/linux/microblaze/kernel-features.h [__LINUX_KERNEL_VERSION < 0x040700] (__ASSUME_MLOCK2): Undefine.
* posix: New function posix_spawn_file_actions_addchdir_np [BZ #17405]Florian Weimer2018-11-061-0/+1
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* Move SHMLBA to its own header.Joseph Myers2018-10-172-104/+29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | One difference between bits/shm.h headers for architectures using the Linux kernel is the definition of SHMLBA. This was noted in <https://sourceware.org/ml/libc-alpha/2018-09/msg00175.html> as a reason why even a new architecture (C-SKY) might need its own bits/shm.h; thus, splitting it out of bits/shm.h can allow less duplication of headers for new architectures. This patch moves that definition to its own header, bits/shmlba.h, to allow more sharing of headers between architectures. That move allows the arm, ia64 and sh variants of bits/shm.h to be removed, as they had no other significant differences from the generic bits/shm.h; powerpc and x86 have their own bits/shm.h but do not need to get their own bits/shmlba.h because they use the same SHMLBA as the generic header. Other architectures with their own bits/shm.h get their own bits/shmlba.h without being able to remove their own bits/shm.h until the generic one has been adapted to be able to handle more architectures (where, in addition to the differences seen for bits/msq.h and bits/sem.h, the position of shm_segsz in struct shmid_ds also depends on the architecture). Tested for x86_64 and x86, and with build-many-glibcs.py. * sysdeps/unix/sysv/linux/Makefile (sysdep_headers): Add bits/shmlba.h. * sysdeps/unix/sysv/linux/bits/shm.h: Include <bits/shmlba.h>. (SHMLBA): Remove macro. (__getpagesize): Remove function declaration. * sysdeps/unix/sysv/linux/hppa/bits/shm.h: Include <bits/shmlba.h>. (SHMLBA): Remove macro. * sysdeps/unix/sysv/linux/mips/bits/shm.h: Include <bits/shmlba.h>. (SHMLBA): Remove macro. * sysdeps/unix/sysv/linux/powerpc/bits/shm.h: Include <bits/shmlba.h>. (SHMLBA): Remove macro. (__getpagesize): Remove function declaration. * sysdeps/unix/sysv/linux/sparc/bits/shm.h: Include <bits/shmlba.h>. (SHMLBA): Remove macro. (__getshmlba): Remove function declaration. * sysdeps/unix/sysv/linux/x86/bits/shm.h: Include <bits/shmlba.h>. (SHMLBA): Remove macro. (__getpagesize): Remove function declaration. * sysdeps/unix/sysv/linux/arm/bits/shm.h: Remove file. * sysdeps/unix/sysv/linux/ia64/bits/shm.h: Likewise. * sysdeps/unix/sysv/linux/sh/bits/shm.h: Likewise. * sysdeps/unix/sysv/linux/bits/shmlba.h: New file. * sysdeps/unix/sysv/linux/arm/bits/shmlba.h: Likewise. * sysdeps/unix/sysv/linux/hppa/bits/shmlba.h: Likewise. * sysdeps/unix/sysv/linux/ia64/bits/shmlba.h: Likewise. * sysdeps/unix/sysv/linux/mips/bits/shmlba.h: Likewise. * sysdeps/unix/sysv/linux/sh/bits/shmlba.h: Likewise. * sysdeps/unix/sysv/linux/sparc/bits/shmlba.h: Likewise.
* Unify more sys/procfs.h headers.Joseph Myers2018-09-253-122/+59
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch continues the process of unifying sys/procfs.h headers for architectures using the Linux kernel. A bits/procfs-id.h header is added to define __pr_uid_t and __pr_gid_t for the types of pr_uid and pr_gid; the default version of this header uses unsigned int. On some architectures, sys/procfs.h has copies of 32-bit structures for 64-bit builds; those move into a bits/procfs-extra.h header (they can't go in bits/procfs.h because they have to come *after* other declarations from sys/procfs.h). Given appropriate versions of these headers, six more architectures can then move to providing only bits/procfs*.h without duplicating the rest of the contents of sys/procfs.h. Only alpha needs a further bits/ header to be added before it can stop having its own sys/procfs.h. Tested for x86_64 and x86, and with build-many-glibcs.py. * sysdeps/unix/sysv/linux/sys/procfs.h: Include <bits/procfs-id.h> and <bits/procfs-extra.h>. (struct elf_prpsinfo): Use __pr_uid_t and __pr_gid_t as types of pr_uid and pr_gid. * sysdeps/unix/sysv/linux/Makefile [$(subdir) = misc] (sysdep_headers): Add bits/procfs-id.h and bits/procfs-extra.h. * sysdeps/unix/sysv/linux/bits/procfs-extra.h: New file. * sysdeps/unix/sysv/linux/bits/procfs-id.h: Likewise. * sysdeps/unix/sysv/linux/arm/bits/procfs-id.h: Likewise. * sysdeps/unix/sysv/linux/arm/bits/procfs.h: Likewise. * sysdeps/unix/sysv/linux/m68k/bits/procfs-id.h: Likewise. * sysdeps/unix/sysv/linux/m68k/bits/procfs.h: Likewise. * sysdeps/unix/sysv/linux/s390/bits/procfs-extra.h: Likewise. * sysdeps/unix/sysv/linux/s390/bits/procfs-id.h: Likewise. * sysdeps/unix/sysv/linux/s390/bits/procfs.h: Likewise. * sysdeps/unix/sysv/linux/sh/bits/procfs-id.h: Likewise. * sysdeps/unix/sysv/linux/sh/bits/procfs.h: Likewise. * sysdeps/unix/sysv/linux/sparc/bits/procfs-extra.h: Likewise. * sysdeps/unix/sysv/linux/sparc/bits/procfs-id.h: Likewise. * sysdeps/unix/sysv/linux/sparc/bits/procfs.h: Likewise. * sysdeps/unix/sysv/linux/x86/bits/procfs-id.h: Likewise. * sysdeps/unix/sysv/linux/x86/bits/procfs.h: Likewise. * sysdeps/unix/sysv/linux/arm/sys/procfs.h: Remove file. * sysdeps/unix/sysv/linux/m68k/sys/procfs.h: Likewise. * sysdeps/unix/sysv/linux/s390/sys/procfs.h: Likewise. * sysdeps/unix/sysv/linux/sh/sys/procfs.h: Likewise. * sysdeps/unix/sysv/linux/sparc/sys/procfs.h: Likewise. * sysdeps/unix/sysv/linux/x86/sys/procfs.h: Likewise.
* Unify many bits/mman.h headers.Joseph Myers2018-09-181-44/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Many bits/mman.h headers for Linux architectures have exactly the same contents, up to whitespace, comments and the number of leading 0s on constants. Specifically, this applies to architectures that, in the Linux kernel, either have no uapi/asm/mman.h, or have one that includes asm-generic/mman.h without any changes or additions relevant to glibc (this last case is the one that applies to Arm). It's not useful to have to duplicate the set of MAP_* constants in glibc for all such architectures and any new architectures with that property. Thus, this patch creates a generic sysdeps/unix/sysv/linux/bits/mman.h and removes all the architecture-specific versions that become unnecessary. Further unification remains possible after this patch. For example, the new bits/mman.h could become bits/mman-map-flags-generic.h so that it could also be used by architecture-specific bits/mman.h headers on architectures that use the generic flags but add architecture-specific ones to them. That would allow this common set of MAP_* definitions to be used on ia64 and x86 as well (architectures that include asm-generic/mman.h from their own uapi/asm/mman.h but define additional MAP_* values of their own). Tested with build-many-glibcs.py. * sysdeps/unix/sysv/linux/bits/mman.h: New file. * sysdeps/unix/sysv/linux/aarch64/bits/mman.h: Remove. * sysdeps/unix/sysv/linux/arm/bits/mman.h: Likewise. * sysdeps/unix/sysv/linux/m68k/bits/mman.h: Likewise. * sysdeps/unix/sysv/linux/microblaze/bits/mman.h: Likewise. * sysdeps/unix/sysv/linux/nios2/bits/mman.h: Likewise. * sysdeps/unix/sysv/linux/riscv/bits/mman.h: Likewise. * sysdeps/unix/sysv/linux/s390/bits/mman.h: Likewise. * sysdeps/unix/sysv/linux/sh/bits/mman.h: Likewise.
* nptl: Add abilist symbols for C11 threadsAdhemerval Zanella2018-07-242-0/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds the required abilist symbols for C11 thread support. Checked with a build for all major ABI (aarch64-linux-gnu, alpha-linux-gnu, arm-linux-gnueabi, i386-linux-gnu, ia64-linux-gnu, m68k-linux-gnu, microblaze-linux-gnu [1], mips{64}-linux-gnu, nios2-linux-gnu, powerpc{64le}-linux-gnu, s390{x}-linux-gnu, sparc{64}-linux-gnu, and x86_64-linux-gnu). Also ran a full check on aarch64-linux-gnu, x86_64-linux-gnu, i686-linux-gnu, arm-linux-gnueabhf, and powerpc64le-linux-gnu. [BZ #14092] * sysdeps/unix/sysv/linux/aarch64/libc.abilist [GLIBC_2.28] (thrd_current, thrd_equal, thrd_sleep, thrd_yield): Add C11 thread symbols. * sysdeps/unix/sysv/linux/alpha/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/arm/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/hppa/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/i386/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/ia64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/microblaze/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/nios2/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/sh/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/aarch64/libpthread.abilist [[GLIBC_2.28] (call_once, cnd_broadcast, cnd_destroy, cnd_init, cnd_signal, cnd_timedwait, cnd_wait, mtx_destroy, mtx_init, mtx_lock, mtx_timedlock, mtx_trylock, mtx_unlokc, thrd_create, thrd_detach, thrd_exit, thrd_join, tss_create, tss_delete, tss_get, tss_set): Likewise. * sysdeps/unix/sysv/linux/aarch64/libpthread.abilist: Likewise. * sysdeps/unix/sysv/linux/alpha/libpthread.abilist: Likewise. * sysdeps/unix/sysv/linux/arm/libpthread.abilist: Likewise. * sysdeps/unix/sysv/linux/hppa/libpthread.abilist: Likewise. * sysdeps/unix/sysv/linux/i386/libpthread.abilist: Likewise. * sysdeps/unix/sysv/linux/ia64/libpthread.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/coldfire/libpthread.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/m680x0/libpthread.abilist: Likewise. * sysdeps/unix/sysv/linux/microblaze/libpthread.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/libpthread.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/libpthread.abilist: Likewise. * sysdeps/unix/sysv/linux/nios2/libpthread.abilist: Likewise. ikewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/libpthread.abilist: * sysdeps/unix/sysv/linux/powerpc/powerpc64/libpthread-le.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libpthread.abilist: Likewise. * sysdeps/unix/sysv/linux/riscv/rv64/libpthread.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/libpthread.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/libpthread.abilist: Likewise. * sysdeps/unix/sysv/linux/sh/libpthread.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/libpthread.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/libpthread.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/64/libpthread.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/x32/libpthread.abilist: Likewise.
* Add the statx functionFlorian Weimer2018-07-101-0/+1
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* Add renameat2 function [BZ #17662]Florian Weimer2018-07-051-0/+1
| | | | | | | The implementation falls back to renameat if renameat2 is not available in the kernel (or in the kernel headers) and the flags argument is zero. Without kernel support, a non-zero argument returns EINVAL, not ENOSYS. This mirrors what the kernel does for invalid renameat2 flags.
* Fix Linux fcntl OFD locks for non-LFS architectures (BZ#20251)Adhemerval Zanella2018-06-261-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes the OFD ("file private") locks for architectures that support non-LFS flock definition (__USE_FILE_OFFSET64 not defined). The issue in this case is both F_OFD_{GETLK,SETLK,SETLKW} and F_{SET,GET}L{W}K64 expects a flock64 argument and when using old F_OFD_* flags with a non LFS flock argument the kernel might interpret the underlying data wrongly. Kernel idea originally was to avoid using such flags in non-LFS syscall, but since GLIBC uses fcntl with LFS semantic as default it is possible to provide the functionality and avoid the bogus struct kernel passing by adjusting the struct manually for the required flags. The idea follows other LFS interfaces that provide two symbols: 1. A new LFS fcntl64 is added on default ABI with the usual macros to select it for FILE_OFFSET_BITS=64. 2. The Linux non-LFS fcntl use a stack allocated struct flock64 for F_OFD_{GETLK,SETLK,SETLKW} copy the results on the user provided struct. 3. Keep a compat symbol with old broken semantic for architectures that do not define __OFF_T_MATCHES_OFF64_T. So for architectures which defines __USE_FILE_OFFSET64, fcntl64 will aliased to fcntl and no adjustment would be required. So to actually use F_OFD_* with LFS support the source must be built with LFS support (_FILE_OFFSET_BITS=64). Also F_OFD_SETLKW command is handled a cancellation point, as for F_SETLKW{64}. Checked on x86_64-linux-gnu and i686-linux-gnu. [BZ #20251] * NEWS: Mention fcntl64 addition. * csu/check_fds.c: Replace __fcntl_nocancel by __fcntl64_nocancel. * login/utmp_file.c: Likewise. * sysdeps/posix/fdopendir.c: Likewise. * sysdeps/posix/opendir.c: Likewise. * sysdeps/unix/pt-fcntl.c: Likewise. * include/fcntl.h (__libc_fcntl64, __fcntl64, __fcntl64_nocancel_adjusted): New prototype. (__fcntl_nocancel_adjusted): Remove prototype. * io/Makefile (routines): Add fcntl64. (CFLAGS-fcntl64.c): New rule. * io/Versions [GLIBC_2.28] (fcntl64): New symbol. [GLIBC_PRIVATE] (__libc_fcntl): Rename to __libc_fcntl64. * io/fcntl.h (fcntl64): Add prototype and redirect if __USE_FILE_OFFSET64 is defined. * io/fcntl64.c: New file. * manual/llio.text: Add a note for which commands fcntl acts a cancellation point. * nptl/Makefile (CFLAGS-fcntl64.c): New rule. * sysdeps/mach/hurd/fcntl.c: Alias fcntl to fcntl64 symbols. * sysdeps/mach/hurd/i386/libc.abilist [GLIBC_2.28] (fcntl, fcntl64): New symbols. * sysdeps/unix/sysv/linux/fcntl.c (__libc_fcntl): Fix F_GETLK64, F_OFD_GETLK, F_SETLK64, F_SETLKW64, F_OFD_SETLK, and F_OFD_SETLKW for non-LFS case. * sysdeps/unix/sysv/linux/fcntl64.c: New file. * sysdeps/unix/sysv/linux/fcntl_nocancel.c (__fcntl_nocancel): Rename to __fcntl64_nocancel. (__fcntl_nocancel_adjusted): Rename to __fcntl64_nocancel_adjusted. * sysdeps/unix/sysv/linux/not-cancel.h (__fcntl_nocancel): Rename to __fcntl64_nocancel. * sysdeps/unix/sysv/linux/tst-ofdlocks.c: New file. * sysdeps/unix/sysv/linux/tst-ofdlocks-compat.c: Likewise. * sysdeps/unix/sysv/linux/Makefile (tests): Add tst-ofdlocks. (tests-internal): Add tst-ofdlocks-compat. * sysdeps/unix/sysv/linux/aarch64/libc.abilist [GLIBC_2.28] (fcntl64): New symbol. * sysdeps/unix/sysv/linux/alpha/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/ia64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist: Likewise. * sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/arm/libc.abilist [GLIBC_2.28] (fcntl, fcntl64): Likewise. * sysdeps/unix/sysv/linux/hppa/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/i386/libc.abilis: Likewise. * sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/microblaze/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/nios2/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/sh/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist: Likewise.
* Add SHM_STAT_ANY from Linux 4.17 to bits/shm.h.Joseph Myers2018-06-181-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Linux 4.17 adds a SHM_STAT_ANY constant (ipcs command). This patch adds it to the relevant bits/shm.h headers. Tested for x86_64. * sysdeps/unix/sysv/linux/alpha/bits/shm.h [__USE_MISC] (SHM_STAT_ANY): New macro. * sysdeps/unix/sysv/linux/arm/bits/shm.h [__USE_MISC] (SHM_STAT_ANY): Likewise. * sysdeps/unix/sysv/linux/bits/shm.h [__USE_MISC] (SHM_STAT_ANY): Likewise. * sysdeps/unix/sysv/linux/generic/bits/shm.h [__USE_MISC] (SHM_STAT_ANY): Likewise. * sysdeps/unix/sysv/linux/hppa/bits/shm.h [__USE_MISC] (SHM_STAT_ANY): Likewise. * sysdeps/unix/sysv/linux/ia64/bits/shm.h [__USE_MISC] (SHM_STAT_ANY): Likewise. * sysdeps/unix/sysv/linux/mips/bits/shm.h [__USE_MISC] (SHM_STAT_ANY): Likewise. * sysdeps/unix/sysv/linux/powerpc/bits/shm.h [__USE_MISC] (SHM_STAT_ANY): Likewise. * sysdeps/unix/sysv/linux/s390/bits/shm.h [__USE_MISC] (SHM_STAT_ANY): Likewise. * sysdeps/unix/sysv/linux/sh/bits/shm.h [__USE_MISC] (SHM_STAT_ANY): Likewise. * sysdeps/unix/sysv/linux/sparc/bits/shm.h [__USE_MISC] (SHM_STAT_ANY): Likewise. * sysdeps/unix/sysv/linux/x86/bits/shm.h [__USE_MISC] (SHM_STAT_ANY): Likewise.
* Add MAP_FIXED_NOREPLACE from Linux 4.17 to bits/mman.h.Joseph Myers2018-06-051-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Linux 4.17 adds MAP_FIXED_NOREPLACE (value 0x100000 on most architectures, 0x200000 on alpha). This patch adds that macro to glibc's bits/mman.h headers. Tested for x86_64. * sysdeps/unix/sysv/linux/aarch64/bits/mman.h [__USE_MISC] (MAP_FIXED_NOREPLACE): New macro. * sysdeps/unix/sysv/linux/alpha/bits/mman.h [__USE_MISC] (MAP_FIXED_NOREPLACE): Likewise. * sysdeps/unix/sysv/linux/arm/bits/mman.h [__USE_MISC] (MAP_FIXED_NOREPLACE): Likewise. * sysdeps/unix/sysv/linux/hppa/bits/mman.h [__USE_MISC] (MAP_FIXED_NOREPLACE): Likewise. * sysdeps/unix/sysv/linux/ia64/bits/mman.h [__USE_MISC] (MAP_FIXED_NOREPLACE): Likewise. * sysdeps/unix/sysv/linux/m68k/bits/mman.h [__USE_MISC] (MAP_FIXED_NOREPLACE): Likewise. * sysdeps/unix/sysv/linux/microblaze/bits/mman.h [__USE_MISC] (MAP_FIXED_NOREPLACE): Likewise. * sysdeps/unix/sysv/linux/mips/bits/mman.h [__USE_MISC] (MAP_FIXED_NOREPLACE): Likewise. * sysdeps/unix/sysv/linux/nios2/bits/mman.h [__USE_MISC] (MAP_FIXED_NOREPLACE): Likewise. * sysdeps/unix/sysv/linux/powerpc/bits/mman.h [__USE_MISC] (MAP_FIXED_NOREPLACE): Likewise. * sysdeps/unix/sysv/linux/riscv/bits/mman.h [__USE_MISC] (MAP_FIXED_NOREPLACE): Likewise. * sysdeps/unix/sysv/linux/s390/bits/mman.h [__USE_MISC] (MAP_FIXED_NOREPLACE): Likewise. * sysdeps/unix/sysv/linux/sh/bits/mman.h [__USE_MISC] (MAP_FIXED_NOREPLACE): Likewise. * sysdeps/unix/sysv/linux/sparc/bits/mman.h [__USE_MISC] (MAP_FIXED_NOREPLACE): Likewise. * sysdeps/unix/sysv/linux/x86/bits/mman.h [__USE_MISC] (MAP_FIXED_NOREPLACE): Likewise.
* Add narrowing divide functions.Joseph Myers2018-05-171-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds the narrowing divide functions from TS 18661-1 to glibc's libm: fdiv, fdivl, ddivl, f32divf64, f32divf32x, f32xdivf64 for all configurations; f32divf64x, f32divf128, f64divf64x, f64divf128, f32xdivf64x, f32xdivf128, f64xdivf128 for configurations with _Float64x and _Float128; __nldbl_ddivl for ldbl-opt. The changes are mostly essentially the same as for the other narrowing functions, so the description of those generally applies to this patch as well. Tested for x86_64, x86, mips64 (all three ABIs, both hard and soft float) and powerpc, and with build-many-glibcs.py. * math/Makefile (libm-narrow-fns): Add div. (libm-test-funcs-narrow): Likewise. * math/Versions (GLIBC_2.28): Add narrowing divide functions. * math/bits/mathcalls-narrow.h (div): Use __MATHCALL_NARROW. * math/gen-auto-libm-tests.c (test_functions): Add div. * math/math-narrow.h (CHECK_NARROW_DIV): New macro. (NARROW_DIV_ROUND_TO_ODD): Likewise. (NARROW_DIV_TRIVIAL): Likewise. * sysdeps/ieee754/float128/float128_private.h (__fdivl): New macro. (__ddivl): Likewise. * sysdeps/ieee754/ldbl-opt/Makefile (libnldbl-calls): Add fdiv and ddiv. (CFLAGS-nldbl-ddiv.c): New variable. (CFLAGS-nldbl-fdiv.c): Likewise. * sysdeps/ieee754/ldbl-opt/Versions (GLIBC_2.28): Add __nldbl_ddivl. * sysdeps/ieee754/ldbl-opt/nldbl-compat.h (__nldbl_ddivl): New prototype. * manual/arith.texi (Misc FP Arithmetic): Document fdiv, fdivl, ddivl, fMdivfN, fMdivfNx, fMxdivfN and fMxdivfNx. * math/auto-libm-test-in: Add tests of div. * math/auto-libm-test-out-narrow-div: New generated file. * math/libm-test-narrow-div.inc: New file. * sysdeps/i386/fpu/s_f32xdivf64.c: Likewise. * sysdeps/ieee754/dbl-64/s_f32xdivf64.c: Likewise. * sysdeps/ieee754/dbl-64/s_fdiv.c: Likewise. * sysdeps/ieee754/float128/s_f32divf128.c: Likewise. * sysdeps/ieee754/float128/s_f64divf128.c: Likewise. * sysdeps/ieee754/float128/s_f64xdivf128.c: Likewise. * sysdeps/ieee754/ldbl-128/s_ddivl.c: Likewise. * sysdeps/ieee754/ldbl-128/s_f64xdivf128.c: Likewise. * sysdeps/ieee754/ldbl-128/s_fdivl.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/s_ddivl.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/s_fdivl.c: Likewise. * sysdeps/ieee754/ldbl-96/s_ddivl.c: Likewise. * sysdeps/ieee754/ldbl-96/s_fdivl.c: Likewise. * sysdeps/ieee754/ldbl-opt/nldbl-ddiv.c: Likewise. * sysdeps/ieee754/ldbl-opt/nldbl-fdiv.c: Likewise. * sysdeps/ieee754/soft-fp/s_ddivl.c: Likewise. * sysdeps/ieee754/soft-fp/s_fdiv.c: Likewise. * sysdeps/ieee754/soft-fp/s_fdivl.c: Likewise. * sysdeps/powerpc/fpu/libm-test-ulps: Update. * sysdeps/mach/hurd/i386/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/arm/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/hppa/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/microblaze/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/nios2/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/riscv/rv64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/sh/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
* Add narrowing multiply functions.Joseph Myers2018-05-161-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds the narrowing multiply functions from TS 18661-1 to glibc's libm: fmul, fmull, dmull, f32mulf64, f32mulf32x, f32xmulf64 for all configurations; f32mulf64x, f32mulf128, f64mulf64x, f64mulf128, f32xmulf64x, f32xmulf128, f64xmulf128 for configurations with _Float64x and _Float128; __nldbl_dmull for ldbl-opt. The changes are mostly essentially the same as for the narrowing add functions, so the description of those generally applies to this patch as well. f32xmulf64 for i386 cannot use precision control as used for add and subtract, because that would result in double rounding for subnormal results, so that uses round-to-odd with long double intermediate result instead. The soft-fp support involves adding a new FP_TRUNC_COOKED since soft-fp multiplication uses cooked inputs and outputs. Tested for x86_64, x86, mips64 (all three ABIs, both hard and soft float) and powerpc, and with build-many-glibcs.py. * math/Makefile (libm-narrow-fns): Add mul. (libm-test-funcs-narrow): Likewise. * math/Versions (GLIBC_2.28): Add narrowing multiply functions. * math/bits/mathcalls-narrow.h (mul): Use __MATHCALL_NARROW. * math/gen-auto-libm-tests.c (test_functions): Add mul. * math/math-narrow.h (CHECK_NARROW_MUL): New macro. (NARROW_MUL_ROUND_TO_ODD): Likewise. (NARROW_MUL_TRIVIAL): Likewise. * soft-fp/op-common.h (FP_TRUNC_COOKED): Likewise. * sysdeps/ieee754/float128/float128_private.h (__fmull): New macro. (__dmull): Likewise. * sysdeps/ieee754/ldbl-opt/Makefile (libnldbl-calls): Add fmul and dmul. (CFLAGS-nldbl-dmul.c): New variable. (CFLAGS-nldbl-fmul.c): Likewise. * sysdeps/ieee754/ldbl-opt/Versions (GLIBC_2.28): Add __nldbl_dmull. * sysdeps/ieee754/ldbl-opt/nldbl-compat.h (__nldbl_dmull): New prototype. * manual/arith.texi (Misc FP Arithmetic): Document fmul, fmull, dmull, fMmulfN, fMmulfNx, fMxmulfN and fMxmulfNx. * math/auto-libm-test-in: Add tests of mul. * math/auto-libm-test-out-narrow-mul: New generated file. * math/libm-test-narrow-mul.inc: New file. * sysdeps/i386/fpu/s_f32xmulf64.c: Likewise. * sysdeps/ieee754/dbl-64/s_f32xmulf64.c: Likewise. * sysdeps/ieee754/dbl-64/s_fmul.c: Likewise. * sysdeps/ieee754/float128/s_f32mulf128.c: Likewise. * sysdeps/ieee754/float128/s_f64mulf128.c: Likewise. * sysdeps/ieee754/float128/s_f64xmulf128.c: Likewise. * sysdeps/ieee754/ldbl-128/s_dmull.c: Likewise. * sysdeps/ieee754/ldbl-128/s_f64xmulf128.c: Likewise. * sysdeps/ieee754/ldbl-128/s_fmull.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/s_dmull.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/s_fmull.c: Likewise. * sysdeps/ieee754/ldbl-96/s_dmull.c: Likewise. * sysdeps/ieee754/ldbl-96/s_fmull.c: Likewise. * sysdeps/ieee754/ldbl-opt/nldbl-dmul.c: Likewise. * sysdeps/ieee754/ldbl-opt/nldbl-fmul.c: Likewise. * sysdeps/ieee754/soft-fp/s_dmull.c: Likewise. * sysdeps/ieee754/soft-fp/s_fmul.c: Likewise. * sysdeps/ieee754/soft-fp/s_fmull.c: Likewise. * sysdeps/powerpc/fpu/libm-test-ulps: Update. * sysdeps/mach/hurd/i386/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/arm/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/hppa/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/microblaze/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/nios2/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/riscv/rv64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/sh/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
* Ignore absolute symbols in ABI tests.Joseph Myers2018-05-0413-45/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A recent binutils patch <https://sourceware.org/ml/binutils/2018-04/msg00336.html> stops the MIPS linker including the _gp_disp absolute symbol in dynamic symbol tables. With older binutils, it is included for MIPS o32 (despite the use of symbol versioning), and this means that all the ABI test baselines for MIPS o32 include "_gp_disp _gp_disp A". This symbol is not meaningfully part of the ABI for shared libraries, since it always has to be resolved at static link time to the local definition for the linked object. All the other absolute symbols in ABI test baselines are the names of symbol versions. I don't think the mere existence of a symbol version with a given name - as opposed to the contents of that version if nonempty - is part of the ABI either. Thus, this patch allows the ABI tests to pass both before and after the binutils change by changing abilist.awk not to include absolute symbols in its output, and changing the baselines accordingly. Tested for x86_64, and with build-many-glibcs.py. * scripts/abilist.awk: Ignore absolute symbols. * sysdeps/mach/hurd/i386/ld.abilist: Remove absolute symbols. * sysdeps/mach/hurd/i386/libBrokenLocale.abilist: Likewise. * sysdeps/mach/hurd/i386/libanl.abilist: Likewise. * sysdeps/mach/hurd/i386/libc.abilist: Likewise. * sysdeps/mach/hurd/i386/libcrypt.abilist: Likewise. * sysdeps/mach/hurd/i386/libdl.abilist: Likewise. * sysdeps/mach/hurd/i386/libm.abilist: Likewise. * sysdeps/mach/hurd/i386/libnsl.abilist: Likewise. * sysdeps/mach/hurd/i386/libpthread.abilist: Likewise. * sysdeps/mach/hurd/i386/libresolv.abilist: Likewise. * sysdeps/mach/hurd/i386/librt.abilist: Likewise. * sysdeps/mach/hurd/i386/libutil.abilist: Likewise. * sysdeps/unix/sysv/linux/aarch64/ld.abilist: Likewise. * sysdeps/unix/sysv/linux/aarch64/libBrokenLocale.abilist: Likewise. * sysdeps/unix/sysv/linux/aarch64/libanl.abilist: Likewise. * sysdeps/unix/sysv/linux/aarch64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/aarch64/libcrypt.abilist: Likewise. * sysdeps/unix/sysv/linux/aarch64/libdl.abilist: Likewise. * sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/aarch64/libnsl.abilist: Likewise. * sysdeps/unix/sysv/linux/aarch64/libpthread.abilist: Likewise. * sysdeps/unix/sysv/linux/aarch64/libresolv.abilist: Likewise. * sysdeps/unix/sysv/linux/aarch64/librt.abilist: Likewise. * sysdeps/unix/sysv/linux/aarch64/libthread_db.abilist: Likewise. * sysdeps/unix/sysv/linux/aarch64/libutil.abilist: Likewise. * sysdeps/unix/sysv/linux/alpha/ld.abilist: Likewise. * sysdeps/unix/sysv/linux/alpha/libBrokenLocale.abilist: Likewise. * sysdeps/unix/sysv/linux/alpha/libanl.abilist: Likewise. * sysdeps/unix/sysv/linux/alpha/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/alpha/libcrypt.abilist: Likewise. * sysdeps/unix/sysv/linux/alpha/libdl.abilist: Likewise. * sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/alpha/libnsl.abilist: Likewise. * sysdeps/unix/sysv/linux/alpha/libpthread.abilist: Likewise. * sysdeps/unix/sysv/linux/alpha/libresolv.abilist: Likewise. * sysdeps/unix/sysv/linux/alpha/librt.abilist: Likewise. * sysdeps/unix/sysv/linux/alpha/libthread_db.abilist: Likewise. * sysdeps/unix/sysv/linux/alpha/libutil.abilist: Likewise. * sysdeps/unix/sysv/linux/arm/ld.abilist: Likewise. * sysdeps/unix/sysv/linux/arm/libBrokenLocale.abilist: Likewise. * sysdeps/unix/sysv/linux/arm/libanl.abilist: Likewise. * sysdeps/unix/sysv/linux/arm/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/arm/libcrypt.abilist: Likewise. * sysdeps/unix/sysv/linux/arm/libdl.abilist: Likewise. * sysdeps/unix/sysv/linux/arm/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/arm/libnsl.abilist: Likewise. * sysdeps/unix/sysv/linux/arm/libpthread.abilist: Likewise. * sysdeps/unix/sysv/linux/arm/libresolv.abilist: Likewise. * sysdeps/unix/sysv/linux/arm/librt.abilist: Likewise. * sysdeps/unix/sysv/linux/arm/libthread_db.abilist: Likewise. * sysdeps/unix/sysv/linux/arm/libutil.abilist: Likewise. * sysdeps/unix/sysv/linux/hppa/ld.abilist: Likewise. * sysdeps/unix/sysv/linux/hppa/libBrokenLocale.abilist: Likewise. * sysdeps/unix/sysv/linux/hppa/libanl.abilist: Likewise. * sysdeps/unix/sysv/linux/hppa/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/hppa/libcrypt.abilist: Likewise. * sysdeps/unix/sysv/linux/hppa/libdl.abilist: Likewise. * sysdeps/unix/sysv/linux/hppa/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/hppa/libnsl.abilist: Likewise. * sysdeps/unix/sysv/linux/hppa/libpthread.abilist: Likewise. * sysdeps/unix/sysv/linux/hppa/libresolv.abilist: Likewise. * sysdeps/unix/sysv/linux/hppa/librt.abilist: Likewise. * sysdeps/unix/sysv/linux/hppa/libthread_db.abilist: Likewise. * sysdeps/unix/sysv/linux/hppa/libutil.abilist: Likewise. * sysdeps/unix/sysv/linux/i386/ld.abilist: Likewise. * sysdeps/unix/sysv/linux/i386/libBrokenLocale.abilist: Likewise. * sysdeps/unix/sysv/linux/i386/libanl.abilist: Likewise. * sysdeps/unix/sysv/linux/i386/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/i386/libcrypt.abilist: Likewise. * sysdeps/unix/sysv/linux/i386/libdl.abilist: Likewise. * sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/i386/libnsl.abilist: Likewise. * sysdeps/unix/sysv/linux/i386/libpthread.abilist: Likewise. * sysdeps/unix/sysv/linux/i386/libresolv.abilist: Likewise. * sysdeps/unix/sysv/linux/i386/librt.abilist: Likewise. * sysdeps/unix/sysv/linux/i386/libthread_db.abilist: Likewise. * sysdeps/unix/sysv/linux/i386/libutil.abilist: Likewise. * sysdeps/unix/sysv/linux/ia64/ld.abilist: Likewise. * sysdeps/unix/sysv/linux/ia64/libBrokenLocale.abilist: Likewise. * sysdeps/unix/sysv/linux/ia64/libanl.abilist: Likewise. * sysdeps/unix/sysv/linux/ia64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/ia64/libcrypt.abilist: Likewise. * sysdeps/unix/sysv/linux/ia64/libdl.abilist: Likewise. * sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/ia64/libnsl.abilist: Likewise. * sysdeps/unix/sysv/linux/ia64/libpthread.abilist: Likewise. * sysdeps/unix/sysv/linux/ia64/libresolv.abilist: Likewise. * sysdeps/unix/sysv/linux/ia64/librt.abilist: Likewise. * sysdeps/unix/sysv/linux/ia64/libthread_db.abilist: Likewise. * sysdeps/unix/sysv/linux/ia64/libutil.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/coldfire/ld.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/coldfire/libBrokenLocale.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/coldfire/libanl.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/coldfire/libcrypt.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/coldfire/libdl.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/coldfire/libnsl.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/coldfire/libpthread.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/coldfire/libresolv.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/coldfire/librt.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/coldfire/libthread_db.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/coldfire/libutil.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/m680x0/ld.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/m680x0/libBrokenLocale.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/m680x0/libanl.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/m680x0/libcrypt.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/m680x0/libdl.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/m680x0/libnsl.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/m680x0/libpthread.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/m680x0/libresolv.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/m680x0/librt.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/m680x0/libthread_db.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/m680x0/libutil.abilist: Likewise. * sysdeps/unix/sysv/linux/microblaze/ld.abilist: Likewise. * sysdeps/unix/sysv/linux/microblaze/libBrokenLocale.abilist: Likewise. * sysdeps/unix/sysv/linux/microblaze/libanl.abilist: Likewise. * sysdeps/unix/sysv/linux/microblaze/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/microblaze/libcrypt.abilist: Likewise. * sysdeps/unix/sysv/linux/microblaze/libdl.abilist: Likewise. * sysdeps/unix/sysv/linux/microblaze/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/microblaze/libnsl.abilist: Likewise. * sysdeps/unix/sysv/linux/microblaze/libpthread.abilist: Likewise. * sysdeps/unix/sysv/linux/microblaze/libresolv.abilist: Likewise. * sysdeps/unix/sysv/linux/microblaze/librt.abilist: Likewise. * sysdeps/unix/sysv/linux/microblaze/libthread_db.abilist: Likewise. * sysdeps/unix/sysv/linux/microblaze/libutil.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/ld.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/libBrokenLocale.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/libanl.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/libcidn.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/libcrypt.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/libdl.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/libnsl.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/libnss_compat.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/libnss_db.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/libnss_dns.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/libnss_files.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/libnss_hesiod.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/libnss_nis.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/libnss_nisplus.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/libpthread.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/libresolv.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/librt.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/libthread_db.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/libutil.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/libBrokenLocale.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/libanl.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/libcrypt.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/libdl.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/libnsl.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/libpthread.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/librt.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/libthread_db.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/libutil.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n32/ld.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n32/libresolv.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n64/ld.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n64/libresolv.abilist: Likewise. * sysdeps/unix/sysv/linux/nios2/ld.abilist: Likewise. * sysdeps/unix/sysv/linux/nios2/libBrokenLocale.abilist: Likewise. * sysdeps/unix/sysv/linux/nios2/libanl.abilist: Likewise. * sysdeps/unix/sysv/linux/nios2/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/nios2/libcrypt.abilist: Likewise. * sysdeps/unix/sysv/linux/nios2/libdl.abilist: Likewise. * sysdeps/unix/sysv/linux/nios2/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/nios2/libnsl.abilist: Likewise. * sysdeps/unix/sysv/linux/nios2/libpthread.abilist: Likewise. * sysdeps/unix/sysv/linux/nios2/libresolv.abilist: Likewise. * sysdeps/unix/sysv/linux/nios2/librt.abilist: Likewise. * sysdeps/unix/sysv/linux/nios2/libthread_db.abilist: Likewise. * sysdeps/unix/sysv/linux/nios2/libutil.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/ld.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/libBrokenLocale.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/libanl.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/libcrypt.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/libdl.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/libnsl.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/libpthread.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/libresolv.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/librt.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/libthread_db.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/libutil.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/ld-le.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/ld.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libBrokenLocale-le.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libBrokenLocale.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libanl-le.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libanl.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libcrypt-le.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libcrypt.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libdl-le.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libdl.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libnsl-le.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libnsl.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libpthread-le.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libpthread.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libresolv-le.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libresolv.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/librt-le.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/librt.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libthread_db-le.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libthread_db.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libutil-le.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libutil.abilist: Likewise. * sysdeps/unix/sysv/linux/riscv/rv64/ld.abilist: Likewise. * sysdeps/unix/sysv/linux/riscv/rv64/libBrokenLocale.abilist: Likewise. * sysdeps/unix/sysv/linux/riscv/rv64/libanl.abilist: Likewise. * sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/riscv/rv64/libcrypt.abilist: Likewise. * sysdeps/unix/sysv/linux/riscv/rv64/libdl.abilist: Likewise. * sysdeps/unix/sysv/linux/riscv/rv64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/riscv/rv64/libnsl.abilist: Likewise. * sysdeps/unix/sysv/linux/riscv/rv64/libpthread.abilist: Likewise. * sysdeps/unix/sysv/linux/riscv/rv64/libresolv.abilist: Likewise. * sysdeps/unix/sysv/linux/riscv/rv64/librt.abilist: Likewise. * sysdeps/unix/sysv/linux/riscv/rv64/libthread_db.abilist: Likewise. * sysdeps/unix/sysv/linux/riscv/rv64/libutil.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/libanl.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/ld.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/libBrokenLocale.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/libcrypt.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/libdl.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/libnsl.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/libpthread.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/libresolv.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/librt.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/libthread_db.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/libutil.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/ld.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/libBrokenLocale.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/libcrypt.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/libdl.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/libnsl.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/libpthread.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/libresolv.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/librt.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/libthread_db.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/libutil.abilist: Likewise. * sysdeps/unix/sysv/linux/sh/ld.abilist: Likewise. * sysdeps/unix/sysv/linux/sh/libBrokenLocale.abilist: Likewise. * sysdeps/unix/sysv/linux/sh/libanl.abilist: Likewise. * sysdeps/unix/sysv/linux/sh/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/sh/libcrypt.abilist: Likewise. * sysdeps/unix/sysv/linux/sh/libdl.abilist: Likewise. * sysdeps/unix/sysv/linux/sh/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/sh/libnsl.abilist: Likewise. * sysdeps/unix/sysv/linux/sh/libpthread.abilist: Likewise. * sysdeps/unix/sysv/linux/sh/libresolv.abilist: Likewise. * sysdeps/unix/sysv/linux/sh/librt.abilist: Likewise. * sysdeps/unix/sysv/linux/sh/libthread_db.abilist: Likewise. * sysdeps/unix/sysv/linux/sh/libutil.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/ld.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/libBrokenLocale.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/libanl.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/libcrypt.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/libdl.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/libnsl.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/libpthread.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/libresolv.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/librt.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/libthread_db.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/libutil.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/ld.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/libBrokenLocale.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/libanl.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/libcrypt.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/libdl.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/libnsl.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/libpthread.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/libresolv.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/librt.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/libthread_db.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/libutil.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/64/ld.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/64/libBrokenLocale.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/64/libanl.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/64/libcrypt.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/64/libdl.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/64/libnsl.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/64/libpthread.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/64/libresolv.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/64/librt.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/64/libthread_db.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/64/libutil.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/libmvec.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/x32/ld.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/x32/libBrokenLocale.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/x32/libanl.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/x32/libcrypt.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/x32/libdl.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/x32/libnsl.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/x32/libpthread.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/x32/libresolv.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/x32/librt.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/x32/libthread_db.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/x32/libutil.abilist: Likewise.
* Consolidate Linux readahead implementationAdhemerval Zanella2018-04-271-37/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | This patch consolidate Linux readahead implementation on generic sysdeps/unix/sysv/linux/readahead.c one. The changes are: - Assume __NR_readahead existence with current minimum kernel of 3.2 for all architectures. - Use INLINE_SYSCALL_CALL, __ALIGNMENT_ARG, and SYSCALL_LL64 to pass the 64 bit offset. This allows architectures with different abis to use the same implementation. - Remove arch-specific readahead implementations. Checked on x86_64-linux-gnu and i686-linux-gnu. * sysdeps/unix/sysv/linux/arm/readahead.c: Remove file. * sysdeps/unix/sysv/linux/mips/mips32/readahead.c: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n32/syscalls.list (readahead): Remove. * sysdeps/unix/sysv/linux/mips/mips64/n64/syscalls.list: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/syscalls.list: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/syscalls.list: Likewise. * sysdeps/unix/sysv/linux/readahead.c (__readahead): Assume __NR_readahead existence, and use INLINE_SYSCALL_CALL, __ALIGNMENT_ARG, and SYSCALL_LL64.
* Add PTRACE_SECCOMP_GET_METADATA from Linux 4.16 to sys/ptrace.h.Joseph Myers2018-04-241-1/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds the PTRACE_SECCOMP_GET_METADATA constant from Linux 4.16 to all relevant sys/ptrace.h files. A type struct __ptrace_seccomp_metadata, analogous to other such types, is also added. Tested for x86_64, and with build-many-glibcs.py. * sysdeps/unix/sysv/linux/sys/ptrace.h (PTRACE_SECCOMP_GET_METADATA): New enum value and macro. * sysdeps/unix/sysv/linux/bits/ptrace-shared.h (struct __ptrace_seccomp_metadata): New type. * sysdeps/unix/sysv/linux/aarch64/sys/ptrace.h (PTRACE_SECCOMP_GET_METADATA): Likewise. * sysdeps/unix/sysv/linux/arm/sys/ptrace.h (PTRACE_SECCOMP_GET_METADATA): Likewise. * sysdeps/unix/sysv/linux/ia64/sys/ptrace.h (PTRACE_SECCOMP_GET_METADATA): Likewise. * sysdeps/unix/sysv/linux/powerpc/sys/ptrace.h (PTRACE_SECCOMP_GET_METADATA): Likewise. * sysdeps/unix/sysv/linux/s390/sys/ptrace.h (PTRACE_SECCOMP_GET_METADATA): Likewise. * sysdeps/unix/sysv/linux/sparc/sys/ptrace.h (PTRACE_SECCOMP_GET_METADATA): Likewise. * sysdeps/unix/sysv/linux/tile/sys/ptrace.h (PTRACE_SECCOMP_GET_METADATA): Likewise. * sysdeps/unix/sysv/linux/x86/sys/ptrace.h (PTRACE_SECCOMP_GET_METADATA): Likewise.
* Consolidate alphasort{64} and versionsort{64} implementationAdhemerval Zanella2018-04-232-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch consolidates both alphasort{64} and versionsort{64} implementation on just the default dirent/alphasort{64}c and dirent/versionsort{64} respectively. It changes the logic to follow the conventions used on other code consolidation: * the non-LFS variant is only built for _DIRENT_MATCHES_DIRENT64 being 0. * the LFS variant is always built and aliased to getdents for ABIs that define _DIRENT_MATCHES_DIRENT64 to 1. Also on Linux the compat symbol for old non-LFS dirent64 definition requires a platform-specific scandir64.c. For powerpc32 and sparcv9 it requires to add specific arch-implementation to override the generic Linux one because neither ABI exports an compat symbol for non-LFS alphasort64 and versionsort64 variant. It is most likely a bug and it is also not one that can be fixed (in that there would be existing binaries expecting both meanings of that symbol at its single existing version, with binaries expecting the new meaning probably much more common than those expecting the original meaning of that symbol at that version). Checked on aarch64-linux-gnu, x86_64-linux-gnu, i686-linux-gnu, sparcv9-linux-gnu, sparc64-linux-gnu, powerpc-linux-gnu, and powerpc64le-linux-gnu. * dirent/alphasort.c (alphasort): Build iff _DIRENT_MATCHES_DIRENT64 is defined. * dirent/versionsort.c (versionsort): Likewise. * dirent/alphasort64.c (alphasort64): Build regardless and alias to alphasort if _DIRENT_MATCHES_DIRENT64 is defined. * dirent/versionsort64.c (versionsort64): Likewise. * sysdeps/unix/sysv/linux/i386/alphasort64.c: Remove file. * sysdeps/unix/sysv/linux/arm/alphasort64.c: Likewise. * sysdeps/unix/sysv/linux/arm/versionsort64.c: Likewise. * sysdeps/unix/sysv/linux/m68k/alphasort64.c: Likewise. * sysdeps/unix/sysv/linux/m68k/versionsort64.c: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/alphasort64.c: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/versionsort64.c: Likewise. * sysdeps/unix/sysv/linux/i386/versionsort64.c: Likewise. * sysdeps/unix/sysv/linux/alphasort64.c: New file. * sysdeps/unix/sysv/linux/versionsort64.c: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/alphasort64.c: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/versionsort64.c: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/alphasort64.c: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/versionsort64.c: Likewise.
* Consolidate scandir{at}{64} implementationAdhemerval Zanella2018-04-201-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch consolidates scandir{at}{64} implementation on just the default dirent/scandir{at}{64}{_r}.c ones. It changes the logic to follow the conventions used on other code consolidation: * scandir{at} is only built for _DIRENT_MATCHES_DIRENT64 being 0. * scandir{at}{64} is always built and aliased to getdents for ABIs that define _DIRENT_MATCHES_DIRENT64 to 1. Also on Linux the compat symbol for old non-LFS dirent64 definition requires a platform-specific scandir64.c. Checked on aarch64-linux-gnu, x86_64-linux-gnu, i686-linux-gnu, sparcv9-linux-gnu, sparc64-linux-gnu, powerpc-linux-gnu, and powerpc64le-linux-gnu. * dirent/scandir-tail-common.c: New file. * dirent/scandir-tail.c: Use scandir-tail-common.c. (__scandir_tail): Build iff _DIRENT_MATCHES_DIRENT64 is not defined. * dirent/scandir.c: Use scandir-tail-common.c. * dirent/scandirat.c: Likewise. * dirent/scandir64-tail.c: Use scandir-tail-common.c. * dirent/scandir64.c (scandir64): Always build and alias to scandir if _DIRENT_MATCHES_DIRENT64 is defined. * dirent/scandirat64.c (scandirat64): Likewise. * include/dirent.h (__scandir_tail): Only define iff _DIRENT_MATCHES_DIRENT64 is not defined. (__scandir64_tail): Define regardless. (__scandirat, scandirat64): Remove libc_hidden_proto. * sysdeps/unix/sysv/linux/arm/scandir64.c: Remove file. * sysdeps/unix/sysv/linux/m68k/scandir64.c: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/scandir64.c: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/scandir64.c: Likewise. * sysdeps/unix/sysv/linux/i386/scandir64.c: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/scandir64.c: Likewise. * sysdeps/unix/sysv/linux/scandir64.c: New file.
* Consolidate Linux getdents{64} implementationAdhemerval Zanella2018-04-191-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch consolidates Linux getdents{64} implementation on just the default sysdeps/unix/sysv/linux/getdents{64}{_r}.c ones. Although this symbol is used only internally, the non-LFS version still need to be build due the non-LFS getdirentries which requires its semantic. The non-LFS default implementation now uses the wordsize-32 as base which uses getdents64 syscall plus adjustment for overflow (it allows to use the same code for architectures that does not support non-LFS getdents syscall). It has two main differences to wordsize-32 one: - DIRENT_SET_DP_INO is added to handle alpha requirement to zero the padding. - alloca is removed by allocating a bounded temporary buffer (it increases stack usage by roughly 276 bytes). The default implementation handle the Linux requirements: * getdents is only built for _DIRENT_MATCHES_DIRENT64 being 0. * getdents64 is always built and aliased to getdents for ABIs that define _DIRENT_MATCHES_DIRENT64 to 1. * A compat symbol is added for getdents64 for ABI that used to export the old non-LFS version. Checked on aarch64-linux-gnu, x86_64-linux-gnu, i686-linux-gnu, sparcv9-linux-gnu, sparc64-linux-gnu, powerpc-linux-gnu, and powerpc64le-linux-gnu. * sysdeps/unix/sysv/linux/alpha/getdents.c: Add comments with alpha requirements. (_DIRENT_MATCHES_DIRENT64): Undef * sysdeps/unix/sysv/linux/alpha/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/arm/getdents64.c: Remove file. * sysdeps/unix/sysv/linux/generic/getdents.c: Likewise. * sysdeps/unix/sysv/linux/generic/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/generic/wordsize-32/getdents.c: Likewise. * sysdeps/unix/sysv/linux/getdents.c: Simplify implementation by use getdents64 syscalls as base. * sysdeps/unix/sysv/linux/getdents64.c: Likewise and add compatibility symbol if required. * sysdeps/unix/sysv/linux/hppa/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/i386/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/m68k/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/powerpc/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/getdents.c: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/get_clockfreq.c (__get_clockfreq_via_proc_openprom): Use __getdents64. * sysdeps/unix/sysv/linux/mips/mips64/getdents64.c: New file.
* Consolidate Linux readdir{64}{_r} implementationAdhemerval Zanella2018-04-062-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch consolidates Linux readdir{64}{_r} implementation on just the default sysdeps/unix/sysv/linux/readdir{64}{_r}.c ones. The default implementation handle the Linux requirements: * readdir{_r} is only built for _DIRENT_MATCHES_DIRENT64 being 0. * readdir64{_r} is always built and aliased to readdir{_r} for ABI that define _DIRENT_MATCHES_DIRENT64. * A compat symbol is added for readdir64{_r} for ABI that used to export the old non-LFS version. Checked on aarch64-linux-gnu, x86_64-linux-gnu, i686-linux-gnu, sparcv9-linux-gnu, sparc64-linux-gnu, powerpc-linux-gnu, and powerpc64le-linux-gnu. * sysdeps/posix/readdir.c (__READDIR, __GETDENTS, DIRENTY_TYPE, __READDIR_ALIAS): Undefine after usage. * sysdeps/posix/readdir_r.c (__READDIR_R, __GETDENTS, DIRENT_TYPE, __READDIR_R_ALIAS): Likewise. * sysdeps/unix/sysv/linux/arm/readdir64.c: Remove file. * sysdeps/unix/sysv/linux/arm/readdir64_r.c: Likewise. * sysdeps/unix/sysv/linux/m68k/readdir64.c: Likewise. * sysdeps/unix/sysv/linux/m68k/readdir64_r.c: Likewise. * sysdeps/unix/sysv/linux/powerpc/readdir64.c: Likewise. * sysdeps/unix/sysv/linux/powerpc/readdir64_r.c: Likewise. * sysdeps/unix/sysv/linux/i386/readdir64.c: Likewise. * sysdeps/unix/sysv/linux/i386/readdir64_r.c: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/readdir64.c: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/readdir64_r.c: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/readdir64.c: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/readdir64_r.c: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/readdir.c: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/readdir64.c: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/readdir64_r.c: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/readdir_r.c: Likewise. * sysdeps/unix/sysv/linux/readdir.c: New file. * sysdeps/unix/sysv/linux/readdir_r.c: Likewise. * sysdeps/unix/sysv/linux/readdir64.c: Add compat symbol if required. * sysdeps/unix/sysv/linux/readdir64_r.c: Likewise.
* linux: Consolidate sigaction implementationAdhemerval Zanella2018-04-051-62/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch consolidates all Linux sigaction implementations on the default sysdeps/unix/sysv/linux/sigaction.c. The idea is remove redundant code and simplify new ports addition by following the current generic Linux User API (UAPI). The UAPI for new ports defines a generic extensible sigaction struct as: struct sigaction { __sighandler_t sa_handler; unsigned long sa_flags; #ifdef SA_RESTORER void (*sa_restorer) (void); #endif sigset_t sa_mask; }; Where SA_RESTORER is just placed for compatibility reasons (news ports should not add it). A similar definition is used on generic kernel_sigaction.h. The user exported sigaction definition is not changed, so for most architectures it requires an adjustment to kernel expected one for the syscall. The main changes are: - All architectures now define and use a kernel_sigaction struct meant for the syscall, even for the architectures where the user sigaction has the same layout of the kernel expected one (s390-64 and ia64). Although it requires more work for these architectures, it simplifies the generic implementation. Also, sigaction is hardly a hotspot where micro optimization would play an important role. - The generic kernel_sigaction definition is now aligned with expected UAPI one for newer ports, where SA_RESTORER and sa_restorer are not expected to be defined. This means adding kernel_sigaction for current architectures that does define it (m68k, nios2, powerpc, s390, sh, sparc, and tile) and which rely on previous generic definition. - Remove old MIPS usage of sa_restorer. This was removed since 2.6.27 (2957c9e61ee9c - "[MIPS] IRIX: Goodbye and thanks for all the fish"). - The remaining arch-specific sigaction.c are to handle ABI idiosyncrasies (like SPARC kernel ABI for rt_sigaction that requires an additional stub argument). So for new ports the generic implementation should work if its uses Linux UAPI. If SA_RESTORER is still required (due some architecture limitation), it should define its own kernel_sigaction.h, define it and include generic header (assuming it still uses the default generic kernel layout). Checked on x86_64-linux-gnu, i686-linux-gnu, arm-linux-gnueabihf, aarch64-linux-gnu, sparc64-linux-gnu, sparcv9-linux-gnu, powerpc-linux-gnu, powerpc64-linux-gnu, ia64-linux-gnu and alpha-linux-gnu. I also checked the build on all remaining affected ABIs. * sysdeps/unix/sysv/linux/aarch64/sigaction.c: Use default Linux version as base implementation. * sysdeps/unix/sysv/linux/arm/sigaction.c: Likewise. * sysdeps/unix/sysv/linux/i386/sigaction.c: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/sigaction.c: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/sigaction.c: Likewise. * sysdeps/unix/sysv/linux/x86_64/sigaction.c: Likewise. * sysdeps/unix/sysv/linux/alpha/kernel_sigaction.h: Add include guards, remove unrequired definitions and update comments. * sysdeps/unix/sysv/linux/kernel_sigaction.h: Likewise. * sysdeps/unix/sysv/linux/mips/kernel_sigaction.h: Likewise. * sysdeps/unix/sysv/linux/ia64/kernel_sigaction.h: New file. * sysdeps/unix/sysv/linux/m68k/kernel_sigaction.h: Likewise. * sysdeps/unix/sysv/linux/nios2/kernel_sigaction.h: Likewise. * sysdeps/unix/sysv/linux/powerpc/kernel_sigaction: Likewise. * sysdeps/unix/sysv/linux/s390/kernel_sigaction.h: Likewise. * sysdeps/unix/sysv/linux/sh/kernel_sigaction.h: Likewise. * sysdeps/unix/sysv/linux/sparc/kernel_sigaction.h: Likewise. * sysdeps/unix/sysv/linux/tile/kernel_sigaction.h: Likewise. * sysdeps/unix/sysv/linux/ia64/sigaction.c: Remove file. * sysdeps/unix/sysv/linux/mips/sigaction.c: Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/sigaction.c: Likewise. * sysdeps/unix/sysv/linux/sigaction.c: Add STUB, SET_SA_RESTORER, and RESET_SA_RESTORER hooks.
* Unify umount function implementations (bug 16552).Joseph Myers2018-03-261-30/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Linux kernel architectures have various arrangements for umount syscalls. There is a syscall that takes flags, and an older one that does not. Newer architectures have only the one taking flags, under the name umount2 (or under the name umount, in the ia64 case). Older architectures may have both, under the names umount2 and umount (or under the names umount and oldumount, in the alpha case). glibc then has several similar implementations of the umount function (no flags) in terms of either the __umount2 function, or the corresponding syscall, or in terms of the old syscall under either of its names. This patch simplifies the implementations in glibc by always using the __umount2 function to implement the umount function on all systems using the Linux kernel. The linux/generic implementation is moved to sysdeps/unix/sysv/linux (without any changes to code or comments) and all the other variants are removed. (This will have the effect of causing the new syscall to be used in some cases that previously used the old one, but as discussed for previous changes, such a change to the underlying syscalls used is OK.) There remain two variants of how the __umount2 function is implemented, either in umount2.S, or, for ia64, in syscalls.list. Tested with build-many-glibcs.py. [BZ #16552] * sysdeps/unix/sysv/linux/generic/umount.c: Move to .... * sysdeps/unix/sysv/linux/umount.c: ... here. * sysdeps/unix/sysv/linux/arm/umount.c: Remove file. * sysdeps/unix/sysv/linux/hppa/umount.c: Likewise. * sysdeps/unix/sysv/linux/ia64/umount.c: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/umount.c: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/umount.c: Likewise. * sysdeps/unix/sysv/linux/umount.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/umount.c: Likewise.
* Remove unused frame.h header, sigcontextinfo.h macros.Joseph Myers2018-03-221-9/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The glibc-internal header frame.h was used in the old debug/backtrace.c but is now unused. Similarly, there are some sigcontextinfo.h macros that are used nowhere in glibc - ADVANCE_STACK_FRAME and FIRST_FRAME_POINTER were used in the old debug/backtrace.c, while SIGCONTEXT_EXTRA_ARGS, GET_FRAME, GET_STACK and CALL_SIGHANDLER were unused even before the removal of that old implementation (beyond uses of SIGCONTEXT_EXTRA_ARGS in definitions of CALL_SIGHANDLER). This patch removes all the unused frame.h headers and definitions of those macros. Tested with build-many-glibcs.py. * sysdeps/generic/frame.h: Remove file. * sysdeps/arm/frame.h: Likewise. * sysdeps/hppa/frame.h: Likewise. * sysdeps/generic/sigcontextinfo.h (SIGCONTEXT_EXTRA_ARGS): Remove macro. (GET_FRAME): Likewise. (GET_STACK): Likewise. (CALL_SIGHANDLER): Likewise. * sysdeps/mach/hurd/i386/sigcontextinfo.h (SIGCONTEXT_EXTRA_ARGS): Likewise. (GET_FRAME): Likewise. (GET_STACK): Likewise. (CALL_SIGHANDLER): Likewise. * sysdeps/unix/sysv/linux/alpha/sigcontextinfo.h (SIGCONTEXT_EXTRA_ARGS): Likewise. (GET_FRAME): Likewise. (GET_STACK): Likewise. (CALL_SIGHANDLER): Likewise. * sysdeps/unix/sysv/linux/arm/sigcontextinfo.h (SIGCONTEXT_EXTRA_ARGS): Likewise. (GET_FRAME): Likewise. (GET_STACK): Likewise. (ADVANCE_STACK_FRAME): Likewise. (CALL_SIGHANDLER): Likewise. * sysdeps/unix/sysv/linux/i386/sigcontextinfo.h (SIGCONTEXT_EXTRA_ARGS): Likewise. (GET_FRAME): Likewise. (GET_STACK): Likewise. (CALL_SIGHANDLER): Likewise. * sysdeps/unix/sysv/linux/ia64/sigcontextinfo.h (SIGCONTEXT_EXTRA_ARGS): Likewise. (GET_FRAME): Likewise. (GET_STACK): Likewise. (CALL_SIGHANDLER): Likewise. * sysdeps/unix/sysv/linux/m68k/sigcontextinfo.h (SIGCONTEXT_EXTRA_ARGS): Likewise. (GET_FRAME): Likewise. (GET_STACK): Likewise. (CALL_SIGHANDLER): Likewise. * sysdeps/unix/sysv/linux/microblaze/sigcontextinfo.h (SIGCONTEXT_EXTRA_ARGS): Likewise. (GET_FRAME): Likewise. (GET_STACK): Likewise. (CALL_SIGHANDLER): Likewise. * sysdeps/unix/sysv/linux/mips/sigcontextinfo.h (SIGCONTEXT_EXTRA_ARGS): Likewise. (GET_FRAME): Likewise. (GET_STACK): Likewise. (CALL_SIGHANDLER): Likewise. * sysdeps/unix/sysv/linux/powerpc/sigcontextinfo.h (SIGCONTEXT_EXTRA_ARGS): Likewise. (GET_FRAME): Likewise. (GET_STACK): Likewise. (CALL_SIGHANDLER): Likewise. * sysdeps/unix/sysv/linux/riscv/sigcontextinfo.h (SIGCONTEXT_EXTRA_ARGS): Likewise. (GET_FRAME): Likewise. (GET_STACK): Likewise. (CALL_SIGHANDLER): Likewise. * sysdeps/unix/sysv/linux/s390/sigcontextinfo.h (SIGCONTEXT_EXTRA_ARGS): Likewise. (GET_FRAME): Likewise. (GET_STACK): Likewise. (CALL_SIGHANDLER): Likewise. * sysdeps/unix/sysv/linux/sh/sigcontextinfo.h (SIGCONTEXT_EXTRA_ARGS): Likewise. (GET_FRAME): Likewise. (GET_STACK): Likewise. (CALL_SIGHANDLER): Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/sigcontextinfo.h (SIGCONTEXT_EXTRA_ARGS): Likewise. (FIRST_FRAME_POINTER): Likewise. (ADVANCE_STACK_FRAME): Likewise. (GET_STACK): Likewise. (GET_FRAME): Likewise. (CALL_SIGHANDLER): Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/sigcontextinfo.h (SIGCONTEXT_EXTRA_ARGS): Likewise. (ADVANCE_STACK_FRAME): Likewise. (GET_STACK): Likewise. (GET_FRAME): Likewise. (CALL_SIGHANDLER): Likewise. * sysdeps/unix/sysv/linux/tile/sigcontextinfo.h (SIGCONTEXT_EXTRA_ARGS): Likewise. (GET_FRAME): Likewise. (GET_STACK): Likewise. (CALL_SIGHANDLER): Likewise. * sysdeps/unix/sysv/linux/x86_64/sigcontextinfo.h (SIGCONTEXT_EXTRA_ARGS): Likewise. (GET_FRAME): Likewise. (GET_STACK): Likewise. (CALL_SIGHANDLER): Likewise.
* Add narrowing subtract functions.Joseph Myers2018-03-201-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds the narrowing subtract functions from TS 18661-1 to glibc's libm: fsub, fsubl, dsubl, f32subf64, f32subf32x, f32xsubf64 for all configurations; f32subf64x, f32subf128, f64subf64x, f64subf128, f32xsubf64x, f32xsubf128, f64xsubf128 for configurations with _Float64x and _Float128; __nldbl_dsubl for ldbl-opt. The changes are essentially the same as for the narrowing add functions, so the description of those generally applies to this patch as well. Tested for x86_64, x86, mips64 (all three ABIs, both hard and soft float) and powerpc, and with build-many-glibcs.py. * math/Makefile (libm-narrow-fns): Add sub. (libm-test-funcs-narrow): Likewise. * math/Versions (GLIBC_2.28): Add narrowing subtract functions. * math/bits/mathcalls-narrow.h (sub): Use __MATHCALL_NARROW. * math/gen-auto-libm-tests.c (test_functions): Add sub. * math/math-narrow.h (CHECK_NARROW_SUB): New macro. (NARROW_SUB_ROUND_TO_ODD): Likewise. (NARROW_SUB_TRIVIAL): Likewise. * sysdeps/ieee754/float128/float128_private.h (__fsubl): New macro. (__dsubl): Likewise. * sysdeps/ieee754/ldbl-opt/Makefile (libnldbl-calls): Add fsub and dsub. (CFLAGS-nldbl-dsub.c): New variable. (CFLAGS-nldbl-fsub.c): Likewise. * sysdeps/ieee754/ldbl-opt/Versions (GLIBC_2.28): Add __nldbl_dsubl. * sysdeps/ieee754/ldbl-opt/nldbl-compat.h (__nldbl_dsubl): New prototype. * manual/arith.texi (Misc FP Arithmetic): Document fsub, fsubl, dsubl, fMsubfN, fMsubfNx, fMxsubfN and fMxsubfNx. * math/auto-libm-test-in: Add tests of sub. * math/auto-libm-test-out-narrow-sub: New generated file. * math/libm-test-narrow-sub.inc: New file. * sysdeps/i386/fpu/s_f32xsubf64.c: Likewise. * sysdeps/ieee754/dbl-64/s_f32xsubf64.c: Likewise. * sysdeps/ieee754/dbl-64/s_fsub.c: Likewise. * sysdeps/ieee754/float128/s_f32subf128.c: Likewise. * sysdeps/ieee754/float128/s_f64subf128.c: Likewise. * sysdeps/ieee754/float128/s_f64xsubf128.c: Likewise. * sysdeps/ieee754/ldbl-128/s_dsubl.c: Likewise. * sysdeps/ieee754/ldbl-128/s_f64xsubf128.c: Likewise. * sysdeps/ieee754/ldbl-128/s_fsubl.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/s_dsubl.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/s_fsubl.c: Likewise. * sysdeps/ieee754/ldbl-96/s_dsubl.c: Likewise. * sysdeps/ieee754/ldbl-96/s_fsubl.c: Likewise. * sysdeps/ieee754/ldbl-opt/nldbl-dsub.c: Likewise. * sysdeps/ieee754/ldbl-opt/nldbl-fsub.c: Likewise. * sysdeps/ieee754/soft-fp/s_dsubl.c: Likewise. * sysdeps/ieee754/soft-fp/s_fsub.c: Likewise. * sysdeps/ieee754/soft-fp/s_fsubl.c: Likewise. * sysdeps/powerpc/fpu/libm-test-ulps: Update. * sysdeps/mach/hurd/i386/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/arm/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/hppa/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/microblaze/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/nios2/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/riscv/rv64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/sh/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilegx32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilegx64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
* Refactor Linux ARCH_FORK implementationAdhemerval Zanella2018-03-072-27/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch refactors the ARCH_FORK macro and the required architecture specific header to simplify the required architecture definitions to provide the fork syscall semantic and proper document current Linux clone ABI variant. Instead of require the reimplementation of arch-fork.h header, this patch changes the ARCH_FORK to an inline function with clone ABI defined by kernel-features.h define. The generic kernel ABI meant for newer ports is used as default and redefine if the architecture requires. Checked on x86_64-linux-gnu and i686-linux-gnu. Also with a build for all the afected ABIs. * sysdeps/nptl/fork.c (ARCH_FORK): Replace by auch_fork. * sysdeps/unix/sysv/linux/alpha/arch-fork.h: Remove file. * sysdeps/unix/sysv/linux/riscv/arch-fork.h: Likewise. * sysdeps/unix/sysv/linux/aarch64/arch-fork.h: Likewise. * sysdeps/unix/sysv/linux/arm/arch-fork.h: Likewise. * sysdeps/unix/sysv/linux/hppa/arch-fork.h: Likewise. * sysdeps/unix/sysv/linux/i386/arch-fork.h: Likewise. * sysdeps/unix/sysv/linux/ia64/arch-fork.h: Likewise. * sysdeps/unix/sysv/linux/m68k/arch-fork.h: Likewise. * sysdeps/unix/sysv/linux/microblaze/arch-fork.h: Likewise. * sysdeps/unix/sysv/linux/mips/arch-fork.h: Likewise. * sysdeps/unix/sysv/linux/nios2/arch-fork.h: Likewise. * sysdeps/unix/sysv/linux/powerpc/arch-fork.h: Likewise. * sysdeps/unix/sysv/linux/s390/arch-fork.h: Likewise. * sysdeps/unix/sysv/linux/sh/arch-fork.h: Likewise. * sysdeps/unix/sysv/linux/sparc/arch-fork.h: Likewise. * sysdeps/unix/sysv/linux/tile/arch-fork.h: Likewise. * sysdeps/unix/sysv/linux/x86_64/arch-fork.h: Likewise. * sysdeps/unix/sysv/linux/arch-fork.h (arch_fork): New function. * sysdeps/unix/sysv/linux/aarch64/kernel-features.h: New file. * sysdeps/unix/sysv/linux/riscv/kernel-features.h: Likewise. * sysdeps/unix/sysv/linux/arm/kernel-features.h (__ASSUME_CLONE_BACKWARDS): Define. * sysdeps/unix/sysv/linux/createthread.c (ARCH_CLONE): Define to __clone2 if __NR_clone2 is defined. * sysdeps/unix/sysv/linux/hppa/kernel-features.h (__ASSUME_CLONE_BACKWARDS): Likewise. * sysdeps/unix/sysv/linux/i386/kernel-features.h (__ASSUME_CLONE_BACKWARDS): Likewise. * sysdeps/unix/sysv/linux/ia64/kernel-features.h (__ASSUME_CLONE2): Likewise. * sysdeps/unix/sysv/linux/microblaze/kernel-features.h (__ASSUME_CLONE_BACKWARDS3): Likewise. * sysdeps/unix/sysv/linux/kernel-features.h: Document possible clone variants and the define architecture can use. (__ASSUME_CLONE_DEFAULT): Define as default. * sysdeps/unix/sysv/linux/mips/kernel-features.h (__ASSUME_CLONE_BACKWARDS): Likewise. * sysdeps/unix/sysv/linux/powerpc/kernel-features.h (__ASSUME_CLONE_BACKWARDS): Likewise. * sysdeps/unix/sysv/linux/s390/kernel-features.h (__ASSUME_CLONE_BACKWARDS2): Likewise.
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