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* posix: Fix posix_spawn invalid memory accessAdhemerval Zanella2016-03-203-1/+12
| | | | | | | | | | | | | Current Linux posix_spawn spawn do not test if the pid argument is valid before trying to update it for success case. This patch fixes it. Tested on x86_64 and i686. * sysdeps/unix/sysv/linux/spawni.c (__spawnix): Fix invalid memory access where posix_spawn success and pid argument is null. * posix/tst-spawn.c (do_test): Add posix_spawn null pid argument for success case.
* hurd: Add c++-types expected resultSamuel Thibault2016-03-202-4/+69
| | | | * sysdeps/mach/hurd/i386/c++-types.data: New file.
* hurd: Allow inlining IO locksSamuel Thibault2016-03-202-0/+7
| | | | * sysdeps/mach/hurd/libc-lock.h (_IO_lock_inexpensive): Define to 1.
* hurd: Do not hide rtld symbols which need to be preemptedSamuel Thibault2016-03-204-2/+53
| | | | | | | | | * sysdeps/generic/dl-fcntl.h: New file, adds attribute_hidden to __open and __fcntl. * sysdeps/mach/hurd/dl-fcntl.h: New file, adds attribute_hidden to __fcntl only. * include/fcntl.h [IS_IN (rtld)]: Include <dl-fcntl.h> instead of adding attribute_hidden to __open and __fcntl.
* Fix mach-syscalls.mk buildSamuel Thibault2016-03-202-1/+2
| | | | * mach/Makefile ($(objpfx)mach-syscalls.mk): Depend on libc-modules.h.
* hurd: Break errnos.d / libc-modules.h dependency loopSamuel Thibault2016-03-202-2/+10
| | | | | | | | Generating errnos.d does not actually need libc-modules.h. * sysdeps/mach/hurd/Makefile ($(common-objpfx)errnos.d): Strip "-include $(common-objpfx)libc-modules.h" from CPPFLAGS, and do not depend on libc-modules.h,
* Remove __ASSUME_EVENTFD2, move eventfd to syscalls.list.Joseph Myers2016-03-174-52/+7
| | | | | | | | | | | | | | | | Given current Linux kernel version requirements, we can assume the presence of the eventfd2 syscall. This means that __ASSUME_EVENTFD2 can be removed, and a syscalls.list entry suffices for eventfd instead of needing a .c file. This patch implements those changes. Tested for x86_64 and x86 (not that that means much, given the lack of testsuite coverage for eventfd). * sysdeps/unix/sysv/linux/kernel-features.h (__ASSUME_EVENTFD2): Remove macro. * sysdeps/unix/sysv/linux/eventfd.c: Remove file. * sysdeps/unix/sysv/linux/syscalls.list (eventfd): New syscall entry.
* Remove __ASSUME_FALLOCATE.Joseph Myers2016-03-173-36/+21
| | | | | | | | | | | | | | | | Given current Linux kernel version requirements, we can always assume the fallocate syscall to be available. This patch removes __ASSUME_FALLOCATE and a test for whether __NR_fallocate is defined. Tested for x86_64 and x86 that installed stripped shared libraries are unchanged by the patch. * sysdeps/unix/sysv/linux/kernel-features.h (__ASSUME_FALLOCATE): Remove macro. * sysdeps/unix/sysv/linux/wordsize-64/posix_fallocate.c: Do not include <kernel-features.h>. [!__ASSUME_FALLOCATE]: Remove conditional code. (posix_fallocate) [__NR_fallocate]: Make code unconditional.
* Use JUMPTARGET in x86-64 mathvecH.J. Lu2016-03-1639-130/+224
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When PLT may be used, JUMPTARGET should be used instead calling the function directly. * sysdeps/x86_64/fpu/multiarch/svml_d_cos2_core_sse4.S (_ZGVbN2v_cos_sse4): Use JUMPTARGET to call cos. * sysdeps/x86_64/fpu/multiarch/svml_d_cos4_core_avx2.S (_ZGVdN4v_cos_avx2): Likewise. * sysdeps/x86_64/fpu/multiarch/svml_d_cos8_core_avx512.S (_ZGVdN4v_cos): Likewise. * sysdeps/x86_64/fpu/multiarch/svml_d_exp2_core_sse4.S (_ZGVbN2v_exp_sse4): Use JUMPTARGET to call exp. * sysdeps/x86_64/fpu/multiarch/svml_d_exp4_core_avx2.S (_ZGVdN4v_exp_avx2): Likewise. * sysdeps/x86_64/fpu/multiarch/svml_d_exp8_core_avx512.S (_ZGVdN4v_exp): Likewise. * sysdeps/x86_64/fpu/multiarch/svml_d_log2_core_sse4.S (_ZGVbN2v_log_sse4): Use JUMPTARGET to call log. * sysdeps/x86_64/fpu/multiarch/svml_d_log4_core_avx2.S (_ZGVdN4v_log_avx2): Likewise. * sysdeps/x86_64/fpu/multiarch/svml_d_log8_core_avx512.S (_ZGVdN4v_log): Likewise. * sysdeps/x86_64/fpu/multiarch/svml_d_pow2_core_sse4.S (_ZGVbN2vv_pow_sse4): Use JUMPTARGET to call pow. * sysdeps/x86_64/fpu/multiarch/svml_d_pow4_core_avx2.S (_ZGVdN4vv_pow_avx2): Likewise. * sysdeps/x86_64/fpu/multiarch/svml_d_pow8_core_avx512.S (_ZGVdN4vv_pow): Likewise. * sysdeps/x86_64/fpu/multiarch/svml_d_sin2_core_sse4.S (_ZGVbN2v_sin_sse4): Use JUMPTARGET to call sin. * sysdeps/x86_64/fpu/multiarch/svml_d_sin4_core_avx2.S (_ZGVdN4v_sin_avx2): Likewise. * sysdeps/x86_64/fpu/multiarch/svml_d_sin8_core_avx512.S (_ZGVdN4v_sin): Likewise. * sysdeps/x86_64/fpu/multiarch/svml_d_sincos2_core_sse4.S (_ZGVbN2vvv_sincos_sse4): Use JUMPTARGET to call sin and cos. * sysdeps/x86_64/fpu/multiarch/svml_d_sincos4_core_avx2.S (_ZGVdN4vvv_sincos_avx2): Likewise. * sysdeps/x86_64/fpu/multiarch/svml_d_sincos8_core_avx512.S (_ZGVdN4vvv_sincos): Likewise. * sysdeps/x86_64/fpu/multiarch/svml_s_cosf16_core_avx512.S (_ZGVdN8v_cosf): Use JUMPTARGET to call cosf. * sysdeps/x86_64/fpu/multiarch/svml_s_cosf4_core_sse4.S (_ZGVbN4v_cosf_sse4): Likewise. * sysdeps/x86_64/fpu/multiarch/svml_s_cosf8_core_avx2.S (_ZGVdN8v_cosf_avx2): Likewise. * sysdeps/x86_64/fpu/multiarch/svml_s_expf16_core_avx512.S (_ZGVdN8v_expf): Use JUMPTARGET to call expf. * sysdeps/x86_64/fpu/multiarch/svml_s_expf4_core_sse4.S (_ZGVbN4v_expf_sse4): Likewise. * sysdeps/x86_64/fpu/multiarch/svml_s_expf8_core_avx2.S (_ZGVdN8v_expf_avx2): Likewise. * sysdeps/x86_64/fpu/multiarch/svml_s_logf16_core_avx512.S (_ZGVdN8v_logf): Use JUMPTARGET to call logf. * sysdeps/x86_64/fpu/multiarch/svml_s_logf4_core_sse4.S (_ZGVbN4v_logf_sse4): Likewise. * sysdeps/x86_64/fpu/multiarch/svml_s_logf8_core_avx2.S (_ZGVdN8v_logf_avx2): Likewise. * sysdeps/x86_64/fpu/multiarch/svml_s_powf16_core_avx512.S (_ZGVdN8vv_powf): Use JUMPTARGET to call powf. * sysdeps/x86_64/fpu/multiarch/svml_s_powf4_core_sse4.S (_ZGVbN4vv_powf_sse4): Likewise. * sysdeps/x86_64/fpu/multiarch/svml_s_powf8_core_avx2.S (_ZGVdN8vv_powf_avx2): Likewise. * sysdeps/x86_64/fpu/multiarch/svml_s_sincosf16_core_avx512.S (_ZGVdN8vv_powf): Use JUMPTARGET to call sinf and cosf. * sysdeps/x86_64/fpu/multiarch/svml_s_sincosf4_core_sse4.S (_ZGVbN4vvv_sincosf_sse4): Likewise. * sysdeps/x86_64/fpu/multiarch/svml_s_sincosf8_core_avx2.S (_ZGVdN8vvv_sincosf_avx2): Likewise. * sysdeps/x86_64/fpu/multiarch/svml_s_sinf16_core_avx512.S (_ZGVdN8v_sinf): Use JUMPTARGET to call sinf. * sysdeps/x86_64/fpu/multiarch/svml_s_sinf4_core_sse4.S (_ZGVbN4v_sinf_sse4): Likewise. * sysdeps/x86_64/fpu/multiarch/svml_s_sinf8_core_avx2.S (_ZGVdN8v_sinf_avx2): Likewise. * sysdeps/x86_64/fpu/svml_d_wrapper_impl.h (WRAPPER_IMPL_SSE2): Use JUMPTARGET to call callee. (WRAPPER_IMPL_SSE2_ff): Likewise. (WRAPPER_IMPL_SSE2_fFF): Likewise. (WRAPPER_IMPL_AVX): Likewise. (WRAPPER_IMPL_AVX_ff): Likewise. (WRAPPER_IMPL_AVX_fFF): Likewise. (WRAPPER_IMPL_AVX512): Likewise. (WRAPPER_IMPL_AVX512_ff): Likewise. * sysdeps/x86_64/fpu/svml_s_wrapper_impl.h (WRAPPER_IMPL_SSE2): Likewise. (WRAPPER_IMPL_SSE2_ff): Likewise. (WRAPPER_IMPL_SSE2_fFF): Likewise. (WRAPPER_IMPL_AVX): Likewise. (WRAPPER_IMPL_AVX_ff): Likewise. (WRAPPER_IMPL_AVX_fFF): Likewise. (WRAPPER_IMPL_AVX512): Likewise. (WRAPPER_IMPL_AVX512_ff): Likewise. (WRAPPER_IMPL_AVX512_fFF): Likewise.
* add ChangeLog entryMike Frysinger2016-03-161-0/+5
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* localedata: use same comment_char/escape_char in these filesMike Frysinger2016-03-162-145/+150
| | | | These files are small and easy to convert to what most others use.
* localedata: an_ES: fix case of lang_abCarlos O'Donell2016-03-162-1/+5
| | | | This needs to be lowercase to match the local ISO 639 database.
* Fix hurd buildSamuel Thibault2016-03-164-1/+11
| | | | | | | | * sysdeps/mach/hurd/openat.c (__openat): Add missing ellipsis. * resolv/gai_sigqueue.c (__gai_sigqueue): Add missing internal_function qualifier. * /rt/aio_sigqueue.c (__aio_sigqueue): Add missing attribute_hidden internal_function qualifiers.
* Fix building glibc master with NDEBUG and --with-cpu.Carlos O'Donell2016-03-157-5/+15
| | | | | | | | | | When building on i686, x86_64, and arm, and with NDEBUG, or --with-cpu there are various variables and functions which are unused based on these settings. This patch marks all such variables with __attribute__((unused)) to avoid the compiler warnings when building with the aformentioned options.
* Remove __ASSUME_PPOLL.Joseph Myers2016-03-153-29/+8
| | | | | | | | | | | | | | | | | | With current kernel version requirements, the ppoll Linux syscall can be assumed to be present on all architectures; this patch removes the __ASSUME_PPOLL macro and conditionals on it and on whether __NR_ppoll is defined. (Note that the same can't yet be done for pselect, because MicroBlaze only wired that up in the syscall table in 3.15.) Tested for x86_64 and x86 that installed stripped shared libraries are unchanged by the patch. * sysdeps/unix/sysv/linux/kernel-features.h (__ASSUME_PPOLL): Remove macro. * sysdeps/unix/sysv/linux/ppoll.c: Do not include <kernel-features.h>. [__NR_ppoll]: Make code unconditional. [!__ASSUME_PPOLL]: Remove conditional code.
* Adjust kernel-features.h defaults for socket syscalls.Joseph Myers2016-03-1518-174/+124
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adjusts the defaults for kernel-features.h macros relating to availability of accept4, recvmmsg and sendmmsg. It is not intended to affect which macros end up getting defined in any configuration. At present, all architectures with syscalls for those functions need to define __ASSUME_*_SYSCALL macros; in particular, any new architecture needs its own kernel-features.h file for that purpose, though it may not otherwise need such a header. Those macros are then used together with __ASSUME_SOCKETCALL to define macros for whether the functions in question are available. This patch changes the defaults so that the syscalls are assumed to be available by default with recent-enough kernels, and it is the responsibility of architecture headers to undefine the macros if they are unavailable in supported kernels at least as recent as the version where the architecture-independent functionality was introduced. The __ASSUME_<function> macros are defaulted similarly instead of being defined based on other macros (defining based on other macros would no longer work because the #undefs appear after the generic header is included), so where the syscall being unavailable means the function is unavailable this means the architecture header has to undefine the __ASSUME_<function> macro; this only affects __ASSUME_ACCEPT4 for ia64, as other cases where the syscalls were added late enough to be relevant with current kernel version requirements are all on socketcall architectures. As a consequence, the AArch64 and Nios II kernel-features.h header files are removed, and others simplified. When the minimum kernel version becomes 4.3 or later on all architectures, the syscalls in question can just be assumed unconditionally, permitting further simplification. Tested for x86_64, x86 and powerpc (that installed shared libraries are unchanged by the patch, and testsuite for x86_64 and x86). * sysdeps/unix/sysv/linux/kernel-features.h (__ASSUME_ACCEPT4_SYSCALL): Define unconditionally. (__ASSUME_ACCEPT4): Likewise. [__LINUX_KERNEL_VERSION >= 0x020621] (__ASSUME_RECVMMSG_SYSCALL): Define. [__LINUX_KERNEL_VERSION >= 0x020621] (__ASSUME_RECVMMSG): Likewise. [__LINUX_KERNEL_VERSION >= 0x030000] (__ASSUME_SENDMMSG_SYSCALL): Likewise. [__LINUX_KERNEL_VERSION >= 0x030000] (__ASSUME_SENDMMSG): Likewise. * sysdeps/unix/sysv/linux/aarch64/kernel-features.h: Remove file. * sysdeps/unix/sysv/linux/nios2/kernel-features.h: Likewise. * sysdeps/unix/sysv/linux/alpha/kernel-features.h (__ASSUME_RECVMMSG_SYSCALL): Do not define. (__ASSUME_ACCEPT4_SYSCALL): Likewise. (__ASSUME_SENDMMSG_SYSCALL): Likewise. * sysdeps/unix/sysv/linux/arm/kernel-features.h (__ASSUME_RECVMMSG_SYSCALL): Likewise. (__ASSUME_ACCEPT4_SYSCALL): Likewise. (__ASSUME_SENDMMSG_SYSCALL): Likewise. * sysdeps/unix/sysv/linux/hppa/kernel-features.h (__ASSUME_ACCEPT4_SYSCALL): Likewise. (__ASSUME_RECVMMSG_SYSCALL): Likewise. (__ASSUME_SENDMMSG_SYSCALL): Likewise. * sysdeps/unix/sysv/linux/i386/kernel-features.h [__LINUX_KERNEL_VERSION >= 0x020621] (__ASSUME_RECVMMSG_SYSCALL): Likewise. [__LINUX_KERNEL_VERSION >= 0x030000] (__ASSUME_SENDMMSG_SYSCALL): Likewise. (__ASSUME_ACCEPT4_SYSCALL): Undefine if [__LINUX_KERNEL_VERSION < 0x040300] instead of defining if [__LINUX_KERNEL_VERSION >= 0x040300]. * sysdeps/unix/sysv/linux/ia64/kernel-features.h (__ASSUME_RECVMMSG_SYSCALL): Do not define. (__ASSUME_SENDMMSG_SYSCALL): Likewise. (__ASSUME_ACCEPT4_SYSCALL): Undefine if [__LINUX_KERNEL_VERSION < 0x030300] instead of defining if [__LINUX_KERNEL_VERSION >= 0x030300]. [__LINUX_KERNEL_VERSION < 0x030300] (__ASSUME_ACCEPT4): Undefine. * sysdeps/unix/sysv/linux/m68k/kernel-features.h (__ASSUME_ACCEPT4_SYSCALL): Undefine if [__LINUX_KERNEL_VERSION < 0x040300] instead of defining if [__LINUX_KERNEL_VERSION >= 0x040300]. (__ASSUME_RECVMMSG_SYSCALL): Likewise. (__ASSUME_SENDMMSG_SYSCALL): Likewise. * sysdeps/unix/sysv/linux/microblaze/kernel-features.h (__ASSUME_ACCEPT4_SYSCALL): Do not define. (__ASSUME_RECVMMSG_SYSCALL): Likewise. (__ASSUME_SENDMMSG_SYSCALL): Undefine if [__LINUX_KERNEL_VERSION < 0x030300] instead of defining if [__LINUX_KERNEL_VERSION >= 0x030300]. * sysdeps/unix/sysv/linux/mips/kernel-features.h (__ASSUME_ACCEPT4_SYSCALL): Do not define. (__ASSUME_RECVMMSG_SYSCALL): Likewise. (__ASSUME_SENDMMSG_SYSCALL): Likewise. * sysdeps/unix/sysv/linux/powerpc/kernel-features.h (__ASSUME_ACCEPT4_SYSCALL): Likewise. (__ASSUME_RECVMMSG_SYSCALL): Likewise. (__ASSUME_SENDMMSG_SYSCALL): Likewise. * sysdeps/unix/sysv/linux/s390/kernel-features.h (__ASSUME_ACCEPT4_SYSCALL): Undefine if [__LINUX_KERNEL_VERSION < 0x040300] instead of defining if [__LINUX_KERNEL_VERSION >= 0x040300]. (__ASSUME_RECVMMSG_SYSCALL): Likewise. (__ASSUME_SENDMMSG_SYSCALL): Likewise. * sysdeps/unix/sysv/linux/sh/kernel-features.h (__ASSUME_ACCEPT4_SYSCALL): Do not define. (__ASSUME_RECVMMSG_SYSCALL): Likewise. (__ASSUME_SENDMMSG_SYSCALL): Likewise. * sysdeps/unix/sysv/linux/sparc/kernel-features.h (__ASSUME_ACCEPT4_SYSCALL): Likewise. (__ASSUME_RECVMMSG_SYSCALL): Likewise. (__ASSUME_SENDMMSG_SYSCALL): Likewise. * sysdeps/unix/sysv/linux/tile/kernel-features.h (__ASSUME_ACCEPT4_SYSCALL): Likewise. (__ASSUME_RECVMMSG_SYSCALL): Likewise. (__ASSUME_SENDMMSG_SYSCALL): Likewise. * sysdeps/unix/sysv/linux/x86_64/kernel-features.h (__ASSUME_ACCEPT4_SYSCALL): Likewise. [__LINUX_KERNEL_VERSION >= 0x020621] (__ASSUME_RECVMMSG_SYSCALL): Likewise. [__LINUX_KERNEL_VERSION >= 0x030000] (__ASSUME_SENDMMSG_SYSCALL): Likewise.
* Fix resource leak in resolver (bug 19257)Andreas Schwab2016-03-152-1/+7
| | | | | | The number of currently defined nameservers is stored in ->nscount, whereas ->_u._ext.nscount is set by __libc_res_nsend only after local initializations.
* Fix compilation of test-signgam-* testsAndreas Schwab2016-03-153-0/+8
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* Update glibc headers for Linux 4.5.Joseph Myers2016-03-145-0/+14
| | | | | | | | | | | | | | | This patch updates the glibc headers with the defines MADV_FREE, IPV6_HDRINCL and EPOLLEXCLUSIVE that are added in Linux 4.5. Tested for x86_64 and x86 (testsuite, and that installed stripped shared libraries are unchanged by the patch). * bits/mman-linux.h [__USE_MISC] (MADV_FREE): New macro. * sysdeps/unix/sysv/linux/hppa/bits/mman.h [__USE_MISC] (MADV_FREE): Likewise. * sysdeps/unix/sysv/linux/bits/in.h (IPV6_HDRINCL): Likewise. * sysdeps/unix/sysv/linux/sys/epoll.h (enum EPOLL_EVENTS): Add EPOLLEXCLUSIVE.
* Remove mention of checktab.awk in timezone/README.Carlos O'Donell2016-03-142-2/+8
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* Fix flag test in waitid compatibility layerSamuel Thibault2016-03-132-1/+6
| | | | | * sysdeps/posix/waitid.c (OUR_WAITID): Test against WSTOPPED instead of WUNTRACED.
* Fix type of parameter passed by malloc_consolidateTulio Magno Quites Machado Filho2016-03-112-1/+6
| | | | atomic_exchange_acq() expected a pointer, but was receiving an integer.
* powerpc: Rearrange cfi_offset callsRajalakshmi Srinivasaraghavan2016-03-117-34/+44
| | | | | This patch rearranges cfi_offset() calls after the last store so as to avoid extra DW_CFA_advance opcodes in unwind information.
* Removed unused timezone/checktab.awk.Carlos O'Donell2016-03-102-174/+4
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* Allow spurious underflow / inexact for ldbl-128ibm.Joseph Myers2016-03-103-2/+26
| | | | | | | | | | | | | | | | | | | | | | A large number of the test-ldouble failures seen for ldbl-128ibm are spurious "underflow" and "inexact" exceptions. These arise from such exceptions in the underlying arithmetic; unlike other spurious exceptions from that arithmetic, they do not in general relate to cases where the returned result is also substantially inaccurate, are not so readily avoidable by appropriately conditional libgcc patches, and are widespread enough to be hard to handle through individual XFAILing of the affected tests. Thus, this patch documents relaxed accuracy goals for libm functions for IBM long double and makes libm-test.inc reflect these spurious exceptions in ldbl-128ibm arithmetic and always allow them in ldbl-128ibm testing (while still not allowing these exceptions to be missing where required to be present). Tested for powerpc. * manual/math.texi (Errors in Math Functions): Document relaxed accuracy goals for IBM long double. * math/libm-test.inc (test_exceptions): Always allow spurious "underflow" and "inexact" exceptions for IBM long double.
* Add _arch_/_cpu_ to index_*/bit_* in x86 cpu-features.hH.J. Lu2016-03-104-151/+181
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | index_* and bit_* macros are used to access cpuid and feature arrays o struct cpu_features. It is very easy to use bits and indices of cpuid array on feature array, especially in assembly codes. For example, sysdeps/i386/i686/multiarch/bcopy.S has HAS_CPU_FEATURE (Fast_Rep_String) which should be HAS_ARCH_FEATURE (Fast_Rep_String) We change index_* and bit_* to index_cpu_*/index_arch_* and bit_cpu_*/bit_arch_* so that we can catch such error at build time. [BZ #19762] * sysdeps/unix/sysv/linux/x86_64/64/dl-librecon.h (EXTRA_LD_ENVVARS): Add _arch_ to index_*/bit_*. * sysdeps/x86/cpu-features.c (init_cpu_features): Likewise. * sysdeps/x86/cpu-features.h (bit_*): Renamed to ... (bit_arch_*): This for feature array. (bit_*): Renamed to ... (bit_cpu_*): This for cpu array. (index_*): Renamed to ... (index_arch_*): This for feature array. (index_*): Renamed to ... (index_cpu_*): This for cpu array. [__ASSEMBLER__] (HAS_FEATURE): Add and use field. [__ASSEMBLER__] (HAS_CPU_FEATURE)): Pass cpu to HAS_FEATURE. [__ASSEMBLER__] (HAS_ARCH_FEATURE)): Pass arch to HAS_FEATURE. [!__ASSEMBLER__] (HAS_CPU_FEATURE): Replace index_##name and bit_##name with index_cpu_##name and bit_cpu_##name. [!__ASSEMBLER__] (HAS_ARCH_FEATURE): Replace index_##name and bit_##name with index_arch_##name and bit_arch_##name.
* mips: terminate the FDE before the return trampoline in makecontextAurelien Jarno2016-03-092-0/+13
| | | | | | | | | | | | | | | | | In makecontext the FDE needs to be terminated before the return trampoline otherwise backtrace called within a context created by makecontext yields infinite backtrace. This bug has been present for a long time, stdlib/tst-makecontext did not fail until recent commit e535ce25. Tested on mips-linux-gnu and mips64el-linux-gnuabi64 and mips-linux-gnu, no regression. This fixes stdlib/tst-makecontext on MIPS. Changelog: [BZ #19792] * sysdeps/unix/sysv/linux/mips/makecontext.S (__makecontext): Terminate FDE before return label.
* Fix ldbl-128ibm nearbyintl in non-default rounding modes (bug 19790).Joseph Myers2016-03-094-109/+32
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The ldbl-128ibm implementation of nearbyintl uses logic that only works in round-to-nearest mode. This contrasts with rintl, which works in all rounding modes. Now, arguably nearbyintl could simply be aliased to rintl, given that spurious "inexact" is generally allowed for ldbl-128ibm, even for the underlying arithmetic operations. But given that the only point of nearbyintl is to avoid "inexact", this patch follows the more conservative approach of adding conditionals to the rintl implementation to make it suitable for use to implement nearbyintl, then builds it for nearbyintl with USE_AS_NEARBYINTL defined. The test test-nearbyint-except-2 shows up issues when traps on "inexact" are enabled, which turn out to be problems with the powerpc fenv_private.h implementation (two functions that should disable exception traps potentially failing to do so in some cases); this patch duly fixes that as well (I don't see any other existing cases where this would be user-visible; there isn't much use of *_NOEX, *hold* etc. in libm that requires exceptions to be discarded and not trapped on). Tested for powerpc. [BZ #19790] * sysdeps/ieee754/ldbl-128ibm/s_rintl.c [USE_AS_NEARBYINTL] (rintl): Define as macro. [USE_AS_NEARBYINTL] (__rintl): Likewise. (__rintl) [USE_AS_NEARBYINTL]: Use SET_RESTORE_ROUND_NOEX instead of fesetround. Ensure results are evaluated before end of scope. * sysdeps/ieee754/ldbl-128ibm/s_nearbyintl.c: Define USE_AS_NEARBYINTL and include s_rintl.c. * sysdeps/powerpc/fpu/fenv_private.h (libc_feholdsetround_ppc): Disable exception traps in new environment. (libc_feholdsetround_ppc_ctx): Likewise.
* Fix tst-audit10 build when -mavx512f is not supported.Roland McGrath2016-03-083-3/+10
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* Add sys/auxv.h wrapper to include/sys/Aurelien Jarno2016-03-082-0/+5
| | | | | | | | | | | | | The GNU libc testsuite fails to build on powerpc/ppc64/ppc64le with the following error: ../sysdeps/powerpc/test-get_hwcap.c:26:22: fatal error: sys/auxv.h: No such file or director This is because test-get_hwcap.c includes <sys/auxv.h>, but we don't provide a wrapper in include/sys. This patch adds one. Changelog: * include/sys/auxv.h: New file.
* Define _HAVE_STRING_ARCH_mempcpy to 1 for x86H.J. Lu2016-03-082-0/+8
| | | | | | | | Since x86 has an optimized mempcpy and GCC can inline mempcpy on x86, define _HAVE_STRING_ARCH_mempcpy to 1 for x86. [BZ #19759] * sysdeps/x86/bits/string.h (_HAVE_STRING_ARCH_mempcpy): New.
* powerpc: Remove uses of operand modifier (%s) in inline asmGabriel F. T. Gomes2016-03-082-6/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The operand modifier %s on powerpc is an undocumented internal implementation detail of GCC. Besides that, the GCC community wants to remove it. This patch rewrites the expressions that use this modifier with logically equivalent expressions that don't require it. Explanation for the substitution: The %s modifier takes an immediate operand and prints 32 less such immediate. Thus, in the previous code, the expression resulted in: 32 - __builtin_ffs(e) where e was guaranteed to have exactly a single bit set, by the following expressions: (e & (e-1) == 0) : e has at most one bit set. (e != 0) : e is not zero, thus it has at least one bit set. Since we guarantee that there is exactly only one bit set, the following statement is true: 32 - __builtin_ffs(e) == __builtin_clz(e) Thus, we can replace __builtin_ffs with __builtin_clz and remove the %s operand modifier.
* powerpc: Fix dl-procinfo HWCAPCarlos Eduardo Seo2016-03-083-8/+13
| | | | | | HWCAP-related code should had been updated when the 32 bits of HWCAP were used. This patch updates the code in dl-procinfo.h to loop through all the 32 bits in HWCAP and updates _dl_powerpc_cap_flags accordingly.
* Support --enable-hardcoded-path-in-tests in benchtestsH.J. Lu2016-03-082-2/+9
| | | | | | | | | | benchtests should use $(test-via-rtld-prefix) and $(+link-tests) like other glibc tests. [BZ #19783] * benchtests/Makefile (run-bench): Replace $(rtld-prefix) with $(test-via-rtld-prefix). ($(binaries-bench)): Replace $(+link) with $(+link-tests).
* sunrpc: In key_call_keyenvoy, use int status instead of union waitFlorian Weimer2016-03-082-2/+7
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* posix: Fix tst-execvpe5 for --enable-hardcoded-path-in-testsAdhemerval Zanella2016-03-082-2/+10
| | | | | | | | | | | | | This patch fixes the posix/tst-execvpe5 invocation when GLIBC is configured with --enable-hardcoded-path-in-tests which fails with: $ cat posix/tst-execvpe5.out Wrong number of arguments (4) Checked on x86-64 and powerpc64le. * posix/tst-execvpe5.c (do_test): Fix fix test invocation when configured with --enable-hardcoded-path-in-tests.
* Fix ldbl-128ibm remainderl equality test for zero low part (bug 19677).Joseph Myers2016-03-087-60/+161
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The ldbl-128ibm implementation of remainderl has logic resulting in incorrect tests for equality of the absolute values of the arguments in the case of zero low parts. If the low parts are both zero but with different signs, this can wrongly cause equal arguments to be treated as different, resulting in turn in incorrect signs of zero result in nondefault rounding modes arising from the subtractions done when the arguments are not equal. This patch fixes the logic to convert -0 low parts into +0 before the comparison (remquo already has separate logic to deal with signs of zero results, so doesn't need such a change). Tests are added for remainderl and remquol similar to that for fmodl, and based on a refactoring of it, since the bug depends on low parts which should not be relied upon in tests not setting the representation explicitly (although in fact the bug shows up in test-ldouble with current GCC). Tested for powerpc. [BZ #19677] * sysdeps/ieee754/ldbl-128ibm/e_remainderl.c (__ieee754_remainderl): Put zero low parts in canonical form. * sysdeps/ieee754/ldbl-128ibm/test-fmodrem-ldbl-128ibm.c: New file. Based on sysdeps/ieee754/ldbl-128ibm/test-fmodl-ldbl-128ibm.c. * sysdeps/ieee754/ldbl-128ibm/test-fmodl-ldbl-128ibm.c: Replace with wrapper round test-fmodrem-ldbl-128ibm.c. * sysdeps/ieee754/ldbl-128ibm/test-remainderl-ldbl-128ibm.c: New file. * sysdeps/ieee754/ldbl-128ibm/test-remquol-ldbl-128ibm.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/Makefile (tests): Add test-remainderl-ldbl-128ibm and test-remquol-ldbl-128ibm.
* ldconfig: Do not remove stale symbolic links with -X [BZ #19610]Florian Weimer2016-03-074-4/+83
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* link sln fix to bugzilla [BZ #15333]Mike Frysinger2016-03-071-0/+1
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* Fix min/max needed for ascii to INTERNAL conversionAndreas Schwab2016-03-072-1/+6
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* sln: use stat64Hongjiu Zhang2016-03-072-2/+7
| | | | | | | | | | | | | When using sln on some filesystems which return 64-bit inodes, the stat call might fail during install like so: .../elf/sln .../elf/symlink.list /lib32/libc.so.6: invalid destination: Value too large for defined data type /lib32/ld-linux.so.2: invalid destination: Value too large for defined data type Makefile:104: recipe for target 'install-symbolic-link' failed Switch to using stat64 all the time to avoid this. URL: https://bugs.gentoo.org/576396
* libio: Clean up _IO_file_doallocate and _IO_wfile_doallocateFlorian Weimer2016-03-073-50/+14
| | | | No functional changes.
* tst-audit4, tst-audit10: Compile AVX/AVX-512 code separately [BZ #19269]Florian Weimer2016-03-076-55/+125
| | | | | This ensures that GCC will not use unsupported instructions before the run-time check to ensure support.
* test-skeleton.c: Do not set RLIMIT_DATA [BZ #19648]Florian Weimer2016-03-072-17/+5
| | | | | | | | | With older kernels, it is mostly ineffective because it causes malloc to switch from sbrk to mmap (potentially invalidating malloc testing compared to what real appliations do). With newer kernels which have switched to enforcing RLIMIT_DATA for mmap as well, some test cases will fail in an unintended fashion because the limit which was set previously does not include room for all mmap mappings.
* posix: New Linux posix_spawn{p} implementationAdhemerval Zanella2016-03-0727-2/+547
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch implements a new posix_spawn{p} implementation for Linux. The main difference is it uses the clone syscall directly with CLONE_VM and CLONE_VFORK flags and a direct allocated stack. The new stack and start function solves most the vfork limitation (possible parent clobber due stack spilling). The remaning issue are related to signal handling: 1. That no signal handlers must run in child context, to avoid corrupt parent's state. 2. Child must synchronize with parent to enforce stack deallocation and to possible return execv issues. The first one is solved by blocking all signals in child, even NPTL-internal ones (SIGCANCEL and SIGSETXID). The second issue is done by a stack allocation in parent and a synchronization with using a pipe or waitpid (in case or error). The pipe has the advantage of allowing the child signal an exec error (checked with new tst-spawn2 test). There is an inherent race condition in pipe2 usage for architectures that do not support the syscall directly. In such cases the a pipe plus fctnl is used instead and it may lead to file descriptor leak in parent (as decribed by fcntl documentation). The child process stack is allocate with a mmap with MAP_STACK flag using default architecture stack size. Although it is slower than use a stack buffer from parent, it allows some slack for the compatibility code to run scripts with no shebang (which may use a buffer with size depending of argument list count). Performance should be similar to the vfork default posix implementation and way faster than fork path (vfork on mostly linux ports are basically clone with CLONE_VM plus CLONE_VFORK). The only difference is the syscalls required for the stack allocation/deallocation. It fixes BZ#10354, BZ#14750, and BZ#18433. Tested on i386, x86_64, powerpc64le, and aarch64. [BZ #14750] [BZ #10354] [BZ #18433] * include/sched.h (__clone): Add hidden prototype. (__clone2): Likewise. * include/unistd.h (__dup): Likewise. * posix/Makefile (tests): Add tst-spawn2. * posix/tst-spawn2.c: New file. * sysdeps/posix/dup.c (__dup): Add hidden definition. * sysdeps/unix/sysv/linux/aarch64/clone.S (__clone): Likewise. * sysdeps/unix/sysv/linux/alpha/clone.S (__clone): Likewise. * sysdeps/unix/sysv/linux/arm/clone.S (__clone): Likewise. * sysdeps/unix/sysv/linux/hppa/clone.S (__clone): Likewise. * sysdeps/unix/sysv/linux/i386/clone.S (__clone): Likewise. * sysdeps/unix/sysv/linux/ia64/clone2.S (__clone): Likewise. * sysdeps/unix/sysv/linux/m68k/clone.S (__clone): Likewise. * sysdeps/unix/sysv/linux/microblaze/clone.S (__clone): Likewise. * sysdeps/unix/sysv/linux/mips/clone.S (__clone): Likewise. * sysdeps/unix/sysv/linux/nios2/clone.S (__clone): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/clone.S (__clone): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/clone.S (__clone): Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/clone.S (__clone): Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/clone.S (__clone): Likewise. * sysdeps/unix/sysv/linux/sh/clone.S (__clone): Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/clone.S (__clone): Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/clone.S (__clone): Likewise. * sysdeps/unix/sysv/linux/tile/clone.S (__clone): Likewise. * sysdeps/unix/sysv/linux/x86_64/clone.S (__clone): Likewise. * sysdeps/unix/sysv/linux/nptl-signals.h (____nptl_is_internal_signal): New function. * sysdeps/unix/sysv/linux/spawni.c: New file.
* posix: execvpe cleanupAdhemerval Zanella2016-03-0713-151/+529
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch removes all the dynamic allocation on execvpe code and instead use direct stack allocation. This is QoI approach to make it possible use in scenarios where memory is shared with parent (vfork or clone with CLONE_VM). For default process spawn (script file without a shebang), stack allocation is bounded by NAME_MAX plus PATH_MAX plus 1. Large file arguments returns an error (ENAMETOOLONG). This differs than current GLIBC pratice in general, but it used to limit stack allocation for large inputs. Also, path in PATH environment variable larger than PATH_MAX are ignored. The shell direct execution exeception, where execve returns ENOEXEC, might requires a large stack allocation due large input argument list. Tested on i686, x86_64, powerpc64le, and aarch64. * posix/execvpe.c (__execvpe): Remove dynamic allocation. * posix/Makefile (tests): Add tst-execvpe{1,2,3,4,5,6}. * posix/tst-execvp1.c (do_test): Use a macro to call execvp. * posix/tst-execvp2.c (do_test): Likewise. * posix/tst-execvp3.c (do_test): Likewise. * posix/tst-execvp4.c (do_test): Likewise. * posix/tst-execvpe1.c: New file. * posix/tst-execvpe2.c: Likewise. * posix/tst-execvpe3.c: Likewise. * posix/tst-execvpe4.c: Likewise. * posix/tst-execvpe5.c: Likewise. * posix/tst-execvpe6.c: Likewise.
* posix: Remove dynamic memory allocation from execl{e,p}Adhemerval Zanella2016-03-074-125/+86
| | | | | | | | | | | | | | | | | | | | | | | | | | GLIBC execl{e,p} implementation might use malloc if the total number of arguments exceed initial assumption size (1024). This might lead to issues in two situations: 1. execl/execle is stated to be async-signal-safe by POSIX [1]. However if execl is used in a signal handler with a large argument set (that may call malloc internally) and if the resulting call fails it might lead malloc in the program in a bad state. 2. If the functions are used in a vfork/clone(VFORK) situation it also might issue malloc internal bad state. This patch fixes it by using stack allocation instead. It also fixes BZ#19534. Tested on x86_64. [1] http://pubs.opengroup.org/onlinepubs/9699919799/functions/V2_chap02.html [BZ #19534] * posix/execl.c (execl): Remove dynamic memory allocation. * posix/execle.c (execle): Likewise. * posix/execlp.c (execlp): Likewise.
* Group AVX512 functions in .text.avx512 sectionH.J. Lu2016-03-063-2/+9
| | | | | | | * sysdeps/x86_64/multiarch/memcpy-avx512-no-vzeroupper.S: Replace .text with .text.avx512. * sysdeps/x86_64/multiarch/memset-avx512-no-vzeroupper.S: Likewise.
* Add placeholder libnsl.abilist and libutil.abilist filesAurelien Jarno2016-03-073-0/+5
| | | | | | Changelog: * sysdeps/generic/libnsl.abilist: New file. * sysdeps/generic/libutil.abilist: New file.
* Use HAS_ARCH_FEATURE with Fast_Rep_StringH.J. Lu2016-03-0610-9/+27
| | | | | | | | | | | | | | | | | | | | | HAS_ARCH_FEATURE, not HAS_CPU_FEATURE, should be used with Fast_Rep_String. [BZ #19762] * sysdeps/i386/i686/multiarch/bcopy.S (bcopy): Use HAS_ARCH_FEATURE with Fast_Rep_String. * sysdeps/i386/i686/multiarch/bzero.S (__bzero): Likewise. * sysdeps/i386/i686/multiarch/memcpy.S (memcpy): Likewise. * sysdeps/i386/i686/multiarch/memcpy_chk.S (__memcpy_chk): Likewise. * sysdeps/i386/i686/multiarch/memmove_chk.S (__memmove_chk): Likewise. * sysdeps/i386/i686/multiarch/mempcpy.S (__mempcpy): Likewise. * sysdeps/i386/i686/multiarch/mempcpy_chk.S (__mempcpy_chk): Likewise. * sysdeps/i386/i686/multiarch/memset.S (memset): Likewise. * sysdeps/i386/i686/multiarch/memset_chk.S (__memset_chk): Likewise.
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