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* hurd: avoid letting signals go to thread created by timer_createSamuel Thibault2018-04-021-0/+6
| | | | | * sysdeps/pthread/timer_routines.c (__timer_thread_start): Block all signals in thread created for runing timers.
* Linux i386: tst-bz21269 triggers SIGBUS on some kernelsFlorian Weimer2018-03-291-0/+2
| | | | | In addition to SIGSEGV and SIGILL, SIGBUS is also a possible signal generated by the kernel.
* sparc: Fix arch_fork definitionAdhemerval Zanella2018-03-272-0/+18
| | | | | | | | | | | | | | | | | | | | | | This patch fixes 3dc214977 for sparc. Different than other architectures SPARC kernel Kconfig does not define CONFIG_CLONE_BACKWARDS, however it has the same ABI as if it did, implemented by sparc-specific code (sparc_do_fork). It also has a unique return value convention for clone: Parent --> %o0 == child's pid, %o1 == 0 Child --> %o0 == parent's pid, %o1 == 1 Which required a special macro to correct issue the syscall (INLINE_CLONE_SYSCALL). Checked on sparc64-linux-gnu and sparcv9-linux-gnu. * sysdeps/unix/sysv/linux/arch-fork.h [__ASSUME_CLONE_BACKWARDS] (arch_fork): Issue INLINE_CLONE_SYSCALL if defined. * sysdeps/unix/sysv/linux/sparc/kernel-features.h (__ASSUME_CLONE_BACKWARDS): Define.
* getlogin_r: return early when linux sentinel value is setJesse Hathaway2018-03-271-0/+9
| | | | | | | | | | | | | | When there is no login uid Linux sets /proc/self/loginid to the sentinel value of, (uid_t) -1. If this is set we can return early and avoid needlessly looking up the sentinel value in any configured nss databases. Checked on aarch64-linux-gnu. * sysdeps/unix/sysv/linux/getlogin_r.c (__getlogin_r_loginuid): Return early when linux sentinel value is set. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* hurd: advertise process memory locking optionSamuel Thibault2018-03-271-2/+2
| | | | | | mlock/unlockall were already implemented. * sysdeps/mach/hurd/bits/posix_opt.h (_POSIX_MEMLOCK): Define.
* Unify umount function implementations (bug 16552).Joseph Myers2018-03-268-133/+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.
* hurd: Regenerate errno.h headerSamuel Thibault2018-03-251-2/+2
| | | | * sysdeps/mach/hurd/bits/errno.h: Regenerate.
* hurd: Fix calling __pthread_initialize_minimal in shared caseSamuel Thibault2018-03-251-1/+1
| | | | | * sysdeps/generic/ldsodefs.h [SHARED] (__pthread_initialize_minimal): Declare function.
* hurd: Initialize TLS and libpthread before signal thread startSamuel Thibault2018-03-254-8/+50
| | | | | | | | | | | | | | * sysdeps/generic/libc-start.h [!SHARED] (ARCH_SETUP_TLS): Define to __libc_setup_tls. * sysdeps/unix/sysv/linux/powerpc/libc-start.h [!SHARED] (ARCH_SETUP_TLS): Likewise. * sysdeps/mach/hurd/libc-start.h: New file copied from sysdeps/generic/libc-start.h, but define ARCH_SETUP_TLS to empty. * csu/libc-start.c [!SHARED] (LIBC_START_MAIN): Call ARCH_SETUP_TLS instead of __libc_setup_tls. * sysdeps/mach/hurd/i386/init-first.c [!SHARED] (init1): Call __libc_setup_tls before initializing libpthread and running _hurd_init which starts the signal thread.
* Fix i386 memmove issue (bug 22644).Andrew Senkevich2018-03-231-6/+6
| | | | | | | [BZ #22644] * sysdeps/i386/i686/multiarch/memcpy-sse2-unaligned.S: Fixed branch conditions. * string/test-memmove.c (do_test2): New testcase.
* Remove unused frame.h header, sigcontextinfo.h macros.Joseph Myers2018-03-2220-210/+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.
* Use x86_64 backtrace as generic version.Joseph Myers2018-03-2110-143/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | No glibc configuration uses the present debug/backtrace.c, whereas several #include the x86_64 version. The x86_64 version is effectively a generic one (using _Unwind_Backtrace from libgcc, which works much more reliably than the built-in functions used by debug/backtrace.c). This patch moves it to debug/backtrace.c and removes all the #includes of the x86_64 version from other architectures which are no longer required. I do not know whether all the other architecture-specific backtrace implementations that are based on _Unwind_Backtrace are required, or whether, where their differences from the generic version do something useful, suitable hooks could be added to the generic version to reduce the duplication involved. Tested with build-many-glibcs.py that installed stripped shared libraries are unchanged by this patch. * sysdeps/x86_64/backtrace.c: Move to .... * debug/backtrace.c: ... here. * sysdeps/aarch64/backtrace.c: Remove file. * sysdeps/alpha/backtrace.c: Likewise. * sysdeps/hppa/backtrace.c: Likewise. * sysdeps/ia64/backtrace.c: Likewise. * sysdeps/mips/backtrace.c: Likewise. * sysdeps/nios2/backtrace.c: Likewise. * sysdeps/riscv/backtrace.c: Likewise. * sysdeps/sh/backtrace.c: Likewise. * sysdeps/tile/backtrace.c: Likewise.
* Remove powerpc, sparc fdim inlines (bug 22987).Joseph Myers2018-03-202-71/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | The powerpc and sparc bits/mathinline.h include inlines of fdim and fdimf. These are not restricted to -fno-math-errno, but do not set errno, and wrongly use ordered <= comparisons instead of the required islessequal comparisons (this latter issue is latent on powerpc because GCC wrongly uses unordered comparison instructions for operations that should use ordered comparison instructions). Since we wish to avoid such header inlines anyway, leaving it to the compiler to inline such standard functions under appropriate conditions, this patch fixes those issues by removing the inlines in question (and thus removing the sparc bits/mathinline.h header which had no other inlines left in it). I've filed <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85003> for adding correct fdim inlines to GCC, since the function is simple enough that a correct inline is a perfectly reasonable architecture-independent optimization with -fno-math-errno and in the absence of implicit excess precision. Tested with build-many-glibcs.py for all its powerpc and sparc configurations. [BZ #22987] * sysdeps/powerpc/bits/mathinline.h (fdim): Remove inline function. (fdimf): Likewise. * sysdeps/sparc/fpu/bits/mathinline.h: Remove file.
* Fix errno valuesSamuel Thibault2018-03-201-16/+16
| | | | | | * manual/errno.texi (EOWNERDEAD, ENOTRECOVERABLE): Remove errno values from Linux-specific section now that it is in the GNU section. * sysdeps/gnu/errlist.c: Regenerate.
* hurd: Code style fixesSamuel Thibault2018-03-201-7/+5
| | | | No code change.
* Add narrowing subtract functions.Joseph Myers2018-03-2050-2/+855
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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.
* hurd: fix buildSamuel Thibault2018-03-181-1/+1
| | | | | * sysdeps/mach/hurd/i386/init-first.c: Compare d->phdr with 0 instead of NULL.
* Hurd: fix port leak in TLSRichard Braun2018-03-181-8/+13
| | | | | * sysdeps/mach/hurd/i386/tls.h (_hurd_tls_init): Use a temporary thread reference.
* hurd: Add mlockall supportSamuel Thibault2018-03-182-0/+82
| | | | | * sysdeps/mach/hurd/mlockall.c: New file. * sysdeps/mach/hurd/munlockall.c: New file.
* hurd: Fix boot with statically-linked exec serverSamuel Thibault2018-03-181-1/+1
| | | | | * sysdeps/mach/hurd/i386/init-first.c (init): Also find ELF headers by oneself when the pointer given in D is nul (as set by ext2fs).
* hurd: Reimplement libc locks using mach's gsyncAgustina Arzille2018-03-187-278/+142
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * hurd/Makefile (routines): Add hurdlock. * hurd/Versions (GLIBC_PRIVATE): Added new entry to export the above interface. (HURD_CTHREADS_0.3): Remove __libc_getspecific. * hurd/hurdpid.c: Include <lowlevellock.h> (_S_msg_proc_newids): Use lll_wait to synchronize. * hurd/hurdsig.c: (reauth_proc): Use __mutex_lock and __mutex_unlock. * hurd/setauth.c: Include <hurdlock.h>, use integer for synchronization. * mach/Makefile (lock-headers): Remove machine-lock.h. * mach/lock-intern.h: Include <lowlevellock.h> instead of <machine-lock.h>. (__spin_lock_t): New type. (__SPIN_LOCK_INITIALIZER): New macro. (__spin_lock, __spin_unlock, __spin_try_lock, __spin_lock_locked, __mutex_init, __mutex_lock_solid, __mutex_unlock_solid, __mutex_lock, __mutex_unlock, __mutex_trylock): Use lll to implement locks. * mach/mutex-init.c: Include <lowlevellock.h> instead of <cthreads.h>. (__mutex_init): Initialize with lll. * manual/errno.texi (EOWNERDEAD, ENOTRECOVERABLE): New errno values. * sysdeps/mach/Makefile: Add libmachuser as dependencies for libs needing lll. * sysdeps/mach/hurd/bits/errno.h: Regenerate. * sysdeps/mach/hurd/cthreads.c (__libc_getspecific): Remove function. * sysdeps/mach/hurd/bits/libc-lock.h: Remove file. * sysdeps/mach/hurd/setpgid.c: Include <lowlevellock.h>. (__setpgid): Use lll for synchronization. * sysdeps/mach/hurd/setsid.c: Likewise with __setsid. * sysdeps/mach/bits/libc-lock.h: Include <tls.h> and <lowlevellock.h> instead of <cthreads.h>. (_IO_lock_inexpensive): New macro (__libc_lock_recursive_t, __rtld_lock_recursive_t): New structures. (__libc_lock_self0): New declaration. (__libc_lock_owner_self): New macro. (__libc_key_t): Remove type. (_LIBC_LOCK_INITIALIZER): New macro. (__libc_lock_define_initialized, __libc_lock_init, __libc_lock_fini, __libc_lock_fini_recursive, __rtld_lock_fini_recursive, __libc_lock_lock, __libc_lock_trylock, __libc_lock_unlock, __libc_lock_define_initialized_recursive, __rtld_lock_define_initialized_recursive, __libc_lock_init_recursive, __libc_lock_trylock_recursive, __libc_lock_lock_recursive, __libc_lock_unlock_recursive, __rtld_lock_initialize, __rtld_lock_trylock_recursive, __rtld_lock_lock_recursive, __rtld_lock_unlock_recursive __libc_once_define, __libc_mutex_unlock): Reimplement with lll. (__libc_lock_define_recursive, __rtld_lock_define_recursive, _LIBC_LOCK_RECURSIVE_INITIALIZER, _RTLD_LOCK_RECURSIVE_INITIALIZER): New macros. Include <libc-lockP.h> to reimplement libc_key* with pthread_key*. * hurd/hurdlock.c: New file. * hurd/hurdlock.h: New file. * mach/lowlevellock.h: New file
* hurd: Rewrite __libc_cleanup_*Agustina Arzille2018-03-181-17/+30
| | | | | | | | | | | | This makes it notably safe against 'return' and such, and used for __libc_cleanup_push/pop. * sysdeps/mach/libc-lock.h (__libc_cleanup_frame): Define structure. (__libc_cleanup_fct): Define function. (__libc_cleanup_region_start, __libc_cleanup_region_end, __libc_cleanup_end): Rewrite implementation using __attribute__ ((__cleanup__)). (__libc_cleanup_push, __libc_cleanup_pop): New macros.
* hurd: Add missing includeSamuel Thibault2018-03-181-0/+1
| | | | * sysdeps/mach/hurd/cthreads.c: Include <cthreads.h>.
* x86_64: Fix build with RTLD_PRIVATE_ERRNO defined to 1Samuel Thibault2018-03-181-4/+3
| | | | | | * sysdeps/unix/sysv/linux/x86_64/sysdep.h: Always include <dl-sysdep.h>. Test for value of RTLD_PRIVATE_ERRNO instead of testing whether it is defined.
* hurd: Fix coding styleSamuel Thibault2018-03-182-8/+8
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* hurd: Fix link cthread/pthread symbol exposition.Samuel Thibault2018-03-173-8/+8
| | | | | | | | | | | | | | | | | | | | | | | | | * hurd/Versions (HURD_CTHREADS_0.3): Rename weak refs cthread_fork, cthread_detach, pthread_getattr_np, pthread_attr_getstack, cthread_keycreate, cthread_getspecific, cthread_setspecific to __cthread_fork, __cthread_detach, __pthread_getattr_np, __pthread_attr_getstack, __cthread_keycreate, __cthread_getspecific, __cthread_setspecific. * hurd/hurdsig.c (_hurdsig_init): Use __cthread_fork, __cthread_detach, __pthread_getattr_np, __pthread_attr_getstack, __cthread_t instead of cthread_fork, cthread_detach, pthread_getattr_np, pthread_attr_getstack. * sysdeps/mach/hurd/cthreads.c (cthread_keycreate): Rename to __cthread_keycreate. (cthread_getspecific): Rename to __cthread_getspecific. (cthread_setspecific): Rename to __cthread_setspecific. (__libc_getspecific): Use __cthread_getspecific instead of cthread_getspecific. * sysdeps/mach/hurd/libc-lock.h (__libc_key_create): Use __cthread_keycreate instead of cthread_keycreate. (__libc_setspecific): Use __cthread_setspecific instead of cthread_setspecific. * sysdeps/mach/libc-lock.h (__libc_key_create, __libc_setspecific): Likewise.
* hurd: Replace threadvars with TLSSamuel Thibault2018-03-1715-144/+74
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This gets rid of a lot of kludge and gets closer to other ports. * hurd/Makefile (headers): Remove threadvar.h. (inline-headers): Remove threadvar.h. * hurd/Versions (GLIBC_2.0: Remove __hurd_sigthread_stack_base, __hurd_sigthread_stack_end, __hurd_sigthread_variables, __hurd_threadvar_max, __hurd_errno_location. (HURD_CTHREADS_0.3): Add pthread_getattr_np, pthread_attr_getstack. * hurd/hurd/signal.h: Do not include <hurd/threadvar.h>. (_hurd_self_sigstate): Use THREAD_SELF to get _hurd_sigstate. (_HURD_SIGNAL_H_EXTERN_INLINE): Use THREAD_SELF to get _hurd_sigstate, unless TLS is not initialized yet, in which case we do not need a critical section yet anyway. * hurd/hurd/threadvar.h: Include <tls.h>, do not include <machine-sp.h>. (__hurd_sigthread_variables, __hurd_threadvar_max): Remove variables declarations. (__hurd_threadvar_index): Remove enum. (_HURD_THREADVAR_H_EXTERN_INLINE): Remove macro. (__hurd_threadvar_location_from_sp,__hurd_threadvar_location): Remove inlines. (__hurd_reply_port0): New variable declaration. (__hurd_local_reply_port): New macro. * hurd/hurdsig.c (__hurd_sigthread_variables): Remove variable. (interrupted_reply_port_location): Add thread_t parameter. Use it with THREAD_TCB to access thread-local variables. (_hurdsig_abort_rpcs): Pass ss->thread to interrupted_reply_port_location. (_hurd_internal_post_signal): Likewise. (_hurdsig_init): Use presence of cthread_fork instead of __hurd_threadvar_stack_mask to start signal thread by hand. Remove signal thread threadvar initialization. * hurd/hurdstartup.c: Do not include <hurd/threadvar.h> * hurd/sigunwind.c: Include <hurd/threadvar.h> (_hurdsig_longjmp_from_handler): Use __hurd_local_reply_port instead of threadvar. * sysdeps/mach/hurd/Versions (libc.GLIBC_PRIVATE): Add __libc_lock_self0. (ld.GLIBC_2.0): Remove __hurd_sigthread_stack_base, __hurd_sigthread_stack_end, __hurd_sigthread_variables. (ld.GLIBC_PRIVATE): Add __libc_lock_self0. * sysdeps/mach/hurd/cthreads.c: Add __libc_lock_self0. * sysdeps/mach/hurd/dl-sysdep.c (errno, __hurd_sigthread_stack_base, __hurd_sigthread_stack_end, __hurd_sigthread_variables, threadvars, __hurd_threadvar_stack_offset, __hurd_threadvar_stack_mask): Do not define variables. * sysdeps/mach/hurd/errno-loc.c: Do not include <errno.h> and <hurd/threadvar.h>. [IS_IN(rtld)] (rtld_errno): New variable. [IS_IN(rtld)] (__errno_location): New weak function. [!IS_IN(rtld)]: Include "../../../csu/errno-loc.c". * sysdeps/mach/hurd/errno.c: Remove file. * sysdeps/mach/hurd/fork.c: Include <hurd/threadvar.h> (__fork): Remove THREADVAR_SPACE macro and its use. * sysdeps/mach/hurd/i386/init-first.c (__hurd_threadvar_max): Remove variable. (init): Do not initialize threadvar. * sysdeps/mach/hurd/i386/libc.abilist (__hurd_threadvar_max): Remove symbol. * sysdeps/mach/hurd/i386/sigreturn.c (__sigreturn): Use __hurd_local_reply_port instead of threadvar. * sysdeps/mach/hurd/i386/tls.h (tcbhead_t): Add reply_port and _hurd_sigstate fields. (HURD_DESC_TLS, __LIBC_NO_TLS, THREAD_TCB): New macro. * sysdeps/mach/hurd/i386/trampoline.c: Remove outdated comment. * sysdeps/mach/hurd/libc-lock.h: Do not include <hurd/threadvar.h>. (__libc_lock_owner_self): Use &__libc_lock_self0 and THREAD_SELF instead of threadvar. * sysdeps/mach/hurd/libc-tsd.h: Remove file. * sysdeps/mach/hurd/mig-reply.c (GETPORT, reply_port): Remove macros. (use_threadvar, global_reply_port): Remove variables. (__hurd_reply_port0): New variable. (__mig_get_reply_port): Use __hurd_local_reply_port and __hurd_reply_port0 instead of threadvar. (__mig_dealloc_reply_port): Likewise. (__mig_init): Do not initialize threadvar. * sysdeps/mach/hurd/profil.c: Fix comment.
* hurd: add TLS supportSamuel Thibault2018-03-176-8/+78
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * sysdeps/generic/thread_state.h (MACHINE_NEW_THREAD_STATE_FLAVOR): Define macro. * sysdeps/mach/thread_state.h (MACHINE_THREAD_STATE_FIX_NEW): New macro. * sysdeps/mach/i386/thread_state.h (MACHINE_NEW_THREAD_STATE_FLAVOR): New macro, defined to i386_THREAD_STATE. (MACHINE_THREAD_STATE_FLAVOR): Define to i386_REGS_SEGS_STATE instead of i386_THREAD_STATE. (MACHINE_THREAD_STATE_FIX_NEW): New macro, reads segments. * sysdeps/mach/hurd/i386/trampoline.c (_hurd_setup_sighandler): Use i386_REGS_SEGS_STATE instead of i386_THREAD_STATE. * sysdeps/mach/hurd/i386/tls.h (TCB_ALIGNMENT, HURD_SEL_LDT): New macros. (_hurd_tls_fork): Add original thread parameter, Duplicate existing LDT descriptor instead of creating a new one. (_hurd_tls_new): New function, creates a new descriptor and updates tcb. * mach/setup-thread.c: Include <ldsodefs.h>. (__mach_setup_thread): Call _dl_allocate_tls, pass MACHINE_NEW_THREAD_STATE_FLAVOR to __thread_set_state instead of MACHINE_THREAD_STATE_FLAVOR, before getting MACHINE_THREAD_STATE_FLAVOR, calling _hurd_tls_new, and setting MACHINE_THREAD_STATE_FLAVOR with the result. * hurd/hurdfault.c (_hurdsig_fault_init): Call MACHINE_THREAD_STATE_FIX_NEW. * sysdeps/mach/hurd/fork.c (__fork): Call _hurd_tls_fork for sigthread too. Add original thread parameter.
* Remove sysdeps/x86/fpu/bits/mathinline.h __finite inline.Joseph Myers2018-03-161-13/+0
| | | | | | | | | | | | | | | | | | | | | | | Continuing the removals of inline functions from the x86 bits/mathinline.h, this patch removes an inline of __finite (which was not actually architecture-specific at all beyond its endianness-dependence). This inline is not normally used with GCC 4.4 or later, because isfinite now uses __builtin_isfinite except for -fsignaling-nans. Allowing __builtin_isfinite etc. to work properly even for -fsignaling-nans, by implementing versions of those built-in functions that use integer arithmetic in GCC, is <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66462> (a patch was committed but had to be reverted because it caused problems, and that patch didn't address all formats for all architectures, only some, so by itself would not have been sufficient to allow glibc to use __builtin_isfinite unconditionally for new-enough GCC). Tested for x86_64 and x86. * sysdeps/x86/fpu/bits/mathinline.h [__USE_MISC] (__finite): Remove inline function.
* Update i386 libm-test-ulps.Joseph Myers2018-03-162-24/+24
| | | | | | | | | I found the i386 libm-test-ulps files needed updating (probably the sqrt changes perturbed exactly when excess precision was used by the compiler). * sysdeps/i386/fpu/libm-test-ulps: Update. * sysdeps/i386/i686/fpu/multiarch/libm-test-ulps: Likewise.
* Revert m68k __ieee754_sqrt changeWilco Dijkstra2018-03-161-0/+1
| | | | | | | | Revert m68k __ieee754_sqrt change as it causes a build failure in one m68k configuration. m68k-linux-gnu now passes again. * sysdeps/m68k/m680x0/fpu/mathimpl.h (__ieee754_sqrt): Revert previous commit.
* Remove all target specific __ieee754_sqrt(f/l) inlinesWilco Dijkstra2018-03-159-253/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove the now unused target specific__ieee754_sqrt(f/l) inlines. Also remove inlines of sqrt which are for really old GCC versions. Removing these is desirable, under the general principle of leaving such inlining to the compiler rather than trying to do it in installed headers, especially when only very old compilers are affected. Note that removing inlines for __ieee754_sqrt disables inlining in the sqrt wrapper functions. Given the sqrt function will typically only be called for negative arguments, it doesn't matter whether the inlining happens or not. * sysdeps/aarch64/fpu/math_private.h (__ieee754_sqrt): Remove. (__ieee754_sqrtf): Remove. * sysdeps/alpha/fpu/math_private.h (__ieee754_sqrt): Remove. (__ieee754_sqrtf): Remove. * sysdeps/generic/math-type-macros.h (M_SQRT): Use sqrt. * sysdeps/m68k/m680x0/fpu/mathimpl.h (__ieee754_sqrt): Remove. * sysdeps/powerpc/fpu/math_private.h (__ieee754_sqrt): Remove. (__ieee754_sqrtf): Remove. * sysdeps/s390/fpu/bits/mathinline.h: Remove file. * sysdeps/sparc/fpu/bits/mathinline.h (sqrt) Remove. (sqrtf): Remove. (sqrtl): Remove. (__ieee754_sqrt): Remove. (__ieee754_sqrtf): Remove. (__ieee754_sqrtl): Remove. * sysdeps/m68k/m680x0/fpu/mathimpl.h (__ieee754_sqrt): Remove. * sysdeps/x86/fpu/math_private.h (__ieee754_sqrt): Remove. * sysdeps/x86_64/fpu/math_private.h (__ieee754_sqrt): Remove. (__ieee754_sqrtf): Remove. (__ieee754_sqrtl): Remove.
* Rename all __ieee754_sqrt(f/l) calls to sqrt(f/l)Wilco Dijkstra2018-03-1547-103/+102
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use sqrt(f/l) to enable inlining by GCC - if inlining doesn't happen, the asm redirect ensures we will still call __ieee754_sqrt(f/l). * sysdeps/ieee754/dbl-64/e_acosh.c (__ieee754_acosh): Use sqrt. * sysdeps/ieee754/dbl-64/e_gamma_r.c (gamma_positive): Likewise. * sysdeps/ieee754/dbl-64/e_hypot.c (__ieee754_hypot): Likewise. * sysdeps/ieee754/dbl-64/e_j0.c (__ieee754_j0): Likewise. * sysdeps/ieee754/dbl-64/e_j1.c (__ieee754_j1): Likewise. * sysdeps/ieee754/dbl-64/e_jn.c (__ieee754_jn): Likewise. * sysdeps/ieee754/dbl-64/s_asinh.c (__asinh): Likewise. * sysdeps/ieee754/dbl-64/wordsize-64/e_acosh.c (__ieee754_acosh): Likewise. * sysdeps/ieee754/flt-32/e_acosf.c (__ieee754_acosf): Likewise. * sysdeps/ieee754/flt-32/e_acoshf.c (__ieee754_acoshf): Likewise. * sysdeps/ieee754/flt-32/e_asinf.c (__ieee754_asinf): Likewise. * sysdeps/ieee754/flt-32/e_gammaf_r.c (gammaf_positive): Likewise. * sysdeps/ieee754/flt-32/e_hypotf.c (__ieee754_hypotf): Likewise. * sysdeps/ieee754/flt-32/e_j0f.c (__ieee754_j0f): Likewise. * sysdeps/ieee754/flt-32/e_j1f.c (__ieee754_j1f): Likewise. * sysdeps/ieee754/flt-32/e_powf.c (__ieee754_powf): Likewise. * sysdeps/ieee754/flt-32/s_asinhf.c (__asinhf): Likewise. * sysdeps/ieee754/ldbl-128/e_acoshl.c (__ieee754_acoshl): Use sqrtl. * sysdeps/ieee754/ldbl-128/e_acosl.c (__ieee754_acosl): Likewise. * sysdeps/ieee754/ldbl-128/e_asinl.c (__ieee754_asinl): Likewise. * sysdeps/ieee754/ldbl-128/e_gammal_r.c (gammal_positive): Likewise. * sysdeps/ieee754/ldbl-128/e_hypotl.c (__ieee754_hypotl): Likewise. * sysdeps/ieee754/ldbl-128/e_j0l.c (__ieee754_j0l): Likewise. * sysdeps/ieee754/ldbl-128/e_j1l.c (__ieee754_j1l): Likewise. * sysdeps/ieee754/ldbl-128/e_jnl.c (__ieee754_jnl): Likewise. * sysdeps/ieee754/ldbl-128/e_powl.c (__ieee754_powl): Likewise. * sysdeps/ieee754/ldbl-128/s_asinhl.c (__ieee754_asinhl): Likewise. * sysdeps/ieee754/ldbl-128ibm/e_acoshl.c (__ieee754_acoshl): Likewise. * sysdeps/ieee754/ldbl-128ibm/e_acosl.c (__ieee754_acosl): Likewise. * sysdeps/ieee754/ldbl-128ibm/e_asinl.c (__ieee754_asinl): Likewise. * sysdeps/ieee754/ldbl-128ibm/e_gammal_r.c (gammal_positive): Likewise. * sysdeps/ieee754/ldbl-128ibm/e_hypotl.c (__ieee754_hypotl): Likewise. * sysdeps/ieee754/ldbl-128ibm/e_j0l.c (__ieee754_j0l): Likewise. * sysdeps/ieee754/ldbl-128ibm/e_j1l.c (__ieee754_j1l): Likewise * sysdeps/ieee754/ldbl-128ibm/e_jnl.c (__ieee754_jnl): Likewise. * sysdeps/ieee754/ldbl-128ibm/e_powl.c (__ieee754_powl): Likewise. * sysdeps/ieee754/ldbl-128ibm/s_asinhl.c (__ieee754_asinhl): Likewise. * sysdeps/ieee754/ldbl-96/e_acoshl.c (__ieee754_acoshl): Use sqrtl. * sysdeps/ieee754/ldbl-96/e_asinl.c (__ieee754_asinl): Likewise. * sysdeps/ieee754/ldbl-96/e_gammal_r.c (gammal_positive): Likewise. * sysdeps/ieee754/ldbl-96/e_hypotl.c (__ieee754_hypotl): Likewise. * sysdeps/ieee754/ldbl-96/e_j0l.c (__ieee754_j0l): Likewise. * sysdeps/ieee754/ldbl-96/e_j1l.c (__ieee754_j1l): Likewise. * sysdeps/ieee754/ldbl-96/e_jnl.c (__ieee754_jnl): Likewise. * sysdeps/ieee754/ldbl-96/s_asinhl.c (__ieee754_asinhl): Likewise. * sysdeps/m68k/m680x0/fpu/e_pow.c (__ieee754_pow): Likewise. * sysdeps/powerpc/fpu/e_hypot.c (__ieee754_hypot): Likewise. * sysdeps/powerpc/fpu/e_hypotf.c (__ieee754_hypotf): Likewise.
* Add support for sqrt asm redirectsWilco Dijkstra2018-03-153-3/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch series cleans up the many uses of __ieee754_sqrt(f/l) in GLIBC. The goal is to enable GCC to do the inlining, and if this fails call the __ieee754_sqrt function. This is done by internally declaring sqrt with asm redirects. The compat symbols and sqrt wrappers need to disable the redirect. The redirect is also disabled if there are already redirects defined when using -ffinite-math-only. All math functions (but not math tests, non-library code and libnldbl) are built with -fno-math-errno which means GCC will typically inline sqrt as a single instruction. This means targets are no longer forced to add a special inline for sqrt. * include/math.h (sqrt): Declare with asm redirect. (sqrtf): Likewise. (sqrtl): Likewise. (sqrtf128): Likewise. * Makeconfig: Add -fno-math-errno for libc/libm, but build testsuite, nonlib and libnldbl with -fmath-errno. * math/w_sqrt_compat.c: Define NO_MATH_REDIRECT. * math/w_sqrt_template.c: Likewise. * math/w_sqrtf_compat.c: Likewise. * math/w_sqrtl_compat.c: Likewise. * sysdeps/i386/fpu/w_sqrt.c: Likewise. * sysdeps/i386/fpu/w_sqrt_compat.c: Likewise. * sysdeps/generic/math-type-macros-float128.h: Remove math.h and complex.h.
* Remove more old-compilers parts of sysdeps/x86/fpu/bits/mathinline.h.Joseph Myers2018-03-151-183/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch removes further parts of sysdeps/x86/fpu/bits/mathinline.h that are only of value for optimization with older compiler versions, in accordance with general principles of preferring the let the compiler deal with such inlining through built-in functions. In general, GCC supports inlining all these functions as of version 4.3 or earlier. However, some inlines in GCC may have had excessively restrictive conditions in past GCC versions (e.g. requiring -ffast-math when the inline is valid under broader conditions). (In particular, GCC had, before GCC 7, unnecessarily restrictive conditions on when it could apply floor and ceil inlines corresponding to the ones removed here. The same was true for rint, but bits/mathinline.h *also* was excessively restrictive there.) The removed sincos inlines are for __sincos etc. functions (not a public interface and not currently used in this header either; not in a part of the header ever used for building glibc itself). Likewise, the atan2 inlines included one for __atan2l, also not a public interface and not used for building glibc itself (calls inside glibc generally use __ieee754_atan2l, for which there is a separate __LIBC_INTERNAL_MATH_INLINES case in this header). Tested for x86_64 and x86. * sysdeps/x86/fpu/bits/mathinline.h [__FAST_MATH__] (__sincos_code): Remove define and undefine. [__FAST_MATH__] (__sincos): Remove inline function. [__FAST_MATH__] (__sincosf): Remove inline function. [__FAST_MATH__] (__sincosl): Remove inline function. (__atan2l): Remove inline functions. [!__GNUC_PREREQ (3, 4)] (__atan2_code): Remove macro. [!__GNUC_PREREQ (3, 4) && __FAST_MATH__] (atan2): Remove inline function. (floor): Remove inline function. (ceil): Likewise. [__FAST_MATH__] (__ldexp_code): Remove macro. [__FAST_MATH__] (ldexp): Remove inline function. [__FAST_MATH__ && __USE_ISOC99] (ldexpf): Likewise. [__FAST_MATH__ && __USE_ISOC99] (ldexpl): Likewise. [__FAST_MATH__ && __USE_ISOC99] (rint): Likewise. [__USE_ISOC99] (__lrint_code): Remove macro. [__USE_ISOC99] (__llrint_code): Likewise. [__USE_ISOC99] (lrintf): Remove inline function. [__USE_ISOC99] (lrint): Likewise. [__USE_ISOC99] (lrintl): Likewise. [__USE_ISOC99] (llrint): Likewise. [__USE_ISOC99] (llrintf): Likewise. [__USE_ISOC99] (llrintl): Likewise.
* aarch64/strncmp: Use lsr instead of mov+lsrSiddhesh Poyarekar2018-03-151-4/+2
| | | | A lsr can do what the mov and lsr did.
* Remove old-GCC parts of x86 bits/mathinline.h.Joseph Myers2018-03-141-306/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In accordance with the general principle of preferring to let the compiler optimize function calls based on their standard semantics rather than putting inline definitions of such functions in installed headers, this patch removes various such inline definitions in the x86 bits/mathinline.h that were already disabled for GCC 3.5 or later and so were only used with very old compilers (for which good optimization is particularly unimportant); along with those inlines, a definition of __M_SQRT2, which was only used in such inline functions, is also removed. This is similar to an early step in removing the string.h inlines; I intend to follow up with further removals of bits/mathinline.h inline definitions in appropriate logical groups (with GCC bugs filed in cases where GCC doesn't already support corresponding optimizations). Tested for x86_64 and x86. * sysdeps/x86/fpu/bits/mathinline.h [!__GNUC_PREREQ (3, 4)] (lrintf): Remove definitions used only with old GCC. [!__GNUC_PREREQ (3, 4)] (lrint): Likewise. [!__GNUC_PREREQ (3, 4)] (llrintf): Likewise. [!__GNUC_PREREQ (3, 4)] (llrint): Likewise. [!__GNUC_PREREQ (3, 4)] (fmaxf): Likewise. [!__GNUC_PREREQ (3, 4)] (fmax): Likewise. [!__GNUC_PREREQ (3, 4)] (fminf): Likewise. [!__GNUC_PREREQ (3, 4)] (fmin): Likewise. [!__GNUC_PREREQ (3, 4)] (rint): Likewise. [!__GNUC_PREREQ (3, 4)] (rintf): Likewise. [!__GNUC_PREREQ (3, 4)] (nearbyint): Likewise. [!__GNUC_PREREQ (3, 4)] (nearbyintf): Likewise. [!__GNUC_PREREQ (3, 4)] (ceil): Likewise. [!__GNUC_PREREQ (3, 4)] (ceilf): Likewise. [!__GNUC_PREREQ (3, 4)] (floor): Likewise. [!__GNUC_PREREQ (3, 4)] (floorf): Likewise. [__FAST_MATH__ && !__GNUC_PREREQ (3, 5)] (tan): Likewise. [__FAST_MATH__ && !__GNUC_PREREQ (3, 5)] (fmod): Likewise. [__FAST_MATH__ && !__GNUC_PREREQ (3, 4)] (sin): Likewise. [__FAST_MATH__ && !__GNUC_PREREQ (3, 4)] (cos): Likewise. [__FAST_MATH__ && !__GNUC_PREREQ (3, 5)] (log10): Likewise. [__FAST_MATH__ && !__GNUC_PREREQ (3, 5)] (asin): Likewise. [__FAST_MATH__ && !__GNUC_PREREQ (3, 5)] (acos): Likewise. [__FAST_MATH__ && !__GNUC_PREREQ (3, 4)] (atan): Likewise. [__FAST_MATH__ && !__GNUC_PREREQ (3, 5)] (log1p): Likewise. [__FAST_MATH__ && !__GNUC_PREREQ (3, 5)] (logb): Likewise. [__FAST_MATH__ && !__GNUC_PREREQ (3, 5)] (log2): Likewise. [__FAST_MATH__ && !__GNUC_PREREQ (3, 5)] (drem): Likewise. [__FAST_MATH__] (__M_SQRT2): Remove macro.
* aarch64/strncmp: Unbreak builds with old binutilsSiddhesh Poyarekar2018-03-141-2/+4
| | | | | Binutils 2.26.* and older do not support moves with shifted registers, so use a separate shift instruction instead.
* aarch64: Improve strncmp for mutually misaligned inputsSiddhesh Poyarekar2018-03-131-15/+80
| | | | | | | | | | | | | | | | | | | | | The mutually misaligned inputs on aarch64 are compared with a simple byte copy, which is not very efficient. Enhance the comparison similar to strcmp by loading a double-word at a time. The peak performance improvement (i.e. 4k maxlen comparisons) due to this on the strncmp microbenchmark is as follows: falkor: 3.5x (up to 72% time reduction) cortex-a73: 3.5x (up to 71% time reduction) cortex-a53: 3.5x (up to 71% time reduction) All mutually misaligned inputs from 16 bytes maxlen onwards show upwards of 15% improvement and there is no measurable effect on the performance of aligned/mutually aligned inputs. * sysdeps/aarch64/strncmp.S (count): New macro. (strncmp): Store misaligned length in SRC1 in COUNT. (mutual_align): Adjust. (misaligned8): Load dword at a time when it is safe.
* Lookup the startup server through /servers/startupDavid Michael2018-03-121-2/+3
| | | | | | * sysdeps/mach/hurd/reboot.c: Include <hurd/paths.h> (reboot): Lookup _SERVERS_STARTUP instead of calling proc_getmsgport to get a port to the startup server.
* nldbl-compat.c: Include math.h before nldbl-compat.h.Zack Weinberg2018-03-111-0/+1
| | | | | | | | | | | | Jeff Law noticed that native PowerPC builds were broken by my having made math_ldbl_opt.h not include math.h. nldbl-compat.c formerly got math.h via libioP.h and math_ldbl_opt.h, *without* __NO_LONG_DOUBLE_MATH; after my change it got it via nldbl-compat.h *with* __NO_LONG_DOUBLE_MATH, but __NO_LONG_DOUBLE_MATH mode is forbidden on hosts that define __HAVE_DISTINCT_FLOAT128, so the build breaks. This is the quick fix. * sysdeps/ieee754/ldbl-opt/nldbl-compat.c: Include math.h before nldbl-compat.h.
* hurd: add gscope supportSamuel Thibault2018-03-1120-0/+47
| | | | | | | | | | | | | | | | | | | | | | | | | | | | * elf/dl-support.c [!THREAD_GSCOPE_IN_TCB] (_dl_thread_gscope_count): Define variable. * sysdeps/generic/ldsodefs.h [!THREAD_GSCOPE_IN_TCB] (struct rtld_global): Add _dl_thread_gscope_count member. * sysdeps/mach/hurd/tls.h: Include <atomic.h>. [!defined __ASSEMBLER__] (THREAD_GSCOPE_GLOBAL, THREAD_GSCOPE_SET_FLAG, THREAD_GSCOPE_RESET_FLAG, THREAD_GSCOPE_WAIT): Define macros. * sysdeps/generic/tls.h: Document THREAD_GSCOPE_IN_TCB. * sysdeps/aarch64/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1. * sysdeps/alpha/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1. * sysdeps/arm/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1. * sysdeps/hppa/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1. * sysdeps/i386/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1. * sysdeps/ia64/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1. * sysdeps/m68k/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1. * sysdeps/microblaze/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1. * sysdeps/mips/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1. * sysdeps/nios2/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1. * sysdeps/powerpc/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1. * sysdeps/riscv/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1. * sysdeps/s390/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1. * sysdeps/sh/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1. * sysdeps/sparc/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1. * sysdeps/tile/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1. * sysdeps/x86_64/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1.
* Don't include math.h/math_private.h in math_ldbl_opt.h.Zack Weinberg2018-03-1022-3/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The sysdeps/ieee754/ldbl-opt version of math_ldbl_opt.h includes math.h and math_private.h, despite not having any need for those headers itself; the sysdeps/generic version doesn't. About 20 files are relying on math_ldbl_opt.h to include math.h and/or math_private.h for them, even though none of them necessarily used on a platform that needs ldbl-opt support. * sysdeps/ieee754/ldbl-opt/math_ldbl_opt.h: Don't include math.h or math_private.h. * sysdeps/alpha/fpu/s_isnan.c * sysdeps/ieee754/ldbl-128ibm/s_ceill.c * sysdeps/ieee754/ldbl-128ibm/s_floorl.c * sysdeps/ieee754/ldbl-128ibm/s_llrintl.c * sysdeps/ieee754/ldbl-128ibm/s_llroundl.c * sysdeps/ieee754/ldbl-128ibm/s_lrintl.c * sysdeps/ieee754/ldbl-128ibm/s_lroundl.c * sysdeps/ieee754/ldbl-128ibm/s_rintl.c * sysdeps/ieee754/ldbl-128ibm/s_roundl.c * sysdeps/ieee754/ldbl-128ibm/s_truncl.c * sysdeps/powerpc/powerpc32/power4/fpu/multiarch/e_hypot.c * sysdeps/powerpc/powerpc32/power4/fpu/multiarch/e_hypotf.c: * sysdeps/powerpc/powerpc64/fpu/multiarch/e_expf.c * sysdeps/powerpc/powerpc64/fpu/multiarch/e_hypot.c * sysdeps/powerpc/powerpc64/fpu/multiarch/e_hypotf.c: Include math_private.h. * sysdeps/ieee754/ldbl-64-128/s_finitel.c * sysdeps/ieee754/ldbl-64-128/s_fpclassifyl.c * sysdeps/ieee754/ldbl-64-128/s_isinfl.c * sysdeps/ieee754/ldbl-64-128/s_isnanl.c * sysdeps/ieee754/ldbl-64-128/s_signbitl.c * sysdeps/powerpc/power7/fpu/s_logb.c: Include math.h and math_private.h.
* alpha/clone.S: Invoke .set noat/.set at around explicit uses of $atZack Weinberg2018-03-101-0/+2
| | | | | | | | | | | On Alpha, the register $at is, by default, reserved for use by the assembler, in the expansion of pseudo-instructions. It's also used by the special calling convention for _mcount. We get warnings from Alpha clone.S because the code to call _mcount isn't properly marked up to tell the assembler not to use $at itself. * sysdeps/unix/sysv/linux/alpha/clone.s (__clone): Wrap manual uses of $at in .set noat / .set at.
* Remove hidden __libc_longjmpH.J. Lu2018-03-102-2/+0
| | | | | | | | | | | | | Since __libc_longjmp is a private interface for cancellation implementation in libpthread, there is no need to provide hidden __libc_longjmp in libc. Tested with build-many-glibcs.py. * include/setjmp.h (__libc_longjmp): Remove libc_hidden_proto. * setjmp/longjmp.c (__libc_longjmp): Remove libc_hidden_def. * sysdeps/s390/longjmp.c (__libc_longjmp): Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/longjmp.S (__libc_longjmp): Likewise.
* sparc32: Add nop before __startcontext to stop unwinding [BZ #22919]Aurelien Jarno2018-03-091-0/+13
| | | | | | | | | | | | | | | On sparc32 tst-makecontext fails, as backtrace called within a context created by makecontext to yield infinite backtrace. Fix that the same way than nios2 by adding a nop just before __startcontext. This is needed as otherwise FDE lookup just repeatedly finds __setcontext's FDE in an infinite loop, due to the convention of using 'address - 1' for FDE lookup. Changelog: [BZ #22919] * sysdeps/unix/sysv/linux/sparc/sparc32/setcontext.S (__startcontext): Add nop before __startcontext, add explaining comments.
* powerpc: Fix TLE build for SPE (BZ #22926)Adhemerval Zanella2018-03-075-2/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some SPE opcodes clashes with some recent PowerISA opcodes and until recently gas did not complain about it. However binutils recently changed it and now VLE configured gas does not support to assembler some instruction that might class with VLE (HTM for instance). It also does not help that glibc build hardware lock elision support as default (regardless of assembler support). Although runtime will not actually enables TLE on SPE hardware (since kernel will not advertise it), I see little advantage on adding HTM support on SPE built glibc. SPE uses an incompatible ABI which does not allow share the same build with default powerpc and HTM code slows down SPE without any benefict. This patch fixes it by only building HTM when SPE configuration is not used. Checked with a powerpc-linux-gnuspe build. I also did some sniff tests on a e500 hardware without any issue. [BZ #22926] * sysdeps/powerpc/powerpc32/sysdep.h (ABORT_TRANSACTION_IMPL): Define empty for __SPE__. * sysdeps/powerpc/sysdep.h (ABORT_TRANSACTION): Likewise. * sysdeps/unix/sysv/linux/powerpc/elision-lock.c (__lll_lock_elision): Do not build hardware transactional code for __SPE__. * sysdeps/unix/sysv/linux/powerpc/elision-trylock.c (__lll_trylock_elision): Likewise. * sysdeps/unix/sysv/linux/powerpc/elision-unlock.c (__lll_unlock_elision): Likewise.
* Refactor Linux ARCH_FORK implementationAdhemerval Zanella2018-03-0729-413/+109
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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.
* aarch64: Fix branch target to loop16Siddhesh Poyarekar2018-03-061-1/+1
| | | | | | | I goofed up when changing the loop8 name to loop16 and missed on out the branch instance. Fixed and actually build tested this time. * sysdeps/aarch64/memcmp.S (more16): Fix branch target loop16.
* aarch64: Optimized memcmp for medium to large sizesSiddhesh Poyarekar2018-03-061-21/+55
| | | | | | | | | | | | | This improved memcmp provides a fast path for compares up to 16 bytes and then compares 16 bytes at a time, thus optimizing loads from both sources. The glibc memcmp microbenchmark retains performance (with an error of ~1ns) for smaller compare sizes and reduces up to 31% of execution time for compares up to 4K on the APM Mustang. On Qualcomm Falkor this improves to almost 48%, i.e. it is almost 2x improvement for sizes of 2K and above. * sysdeps/aarch64/memcmp.S: Widen comparison to 16 bytes at a time.
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