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2016-03-31Add x86-64 memmove with unaligned load/store and rep movsbH.J. Lu
Implement x86-64 memmove with unaligned load/store and rep movsb. Support 16-byte, 32-byte and 64-byte vector register sizes. When size <= 8 times of vector register size, there is no check for address overlap bewteen source and destination. Since overhead for overlap check is small when size > 8 times of vector register size, memcpy is an alias of memmove. A single file provides 2 implementations of memmove, one with rep movsb and the other without rep movsb. They share the same codes when size is between 2 times of vector register size and REP_MOVSB_THRESHOLD which is 2KB for 16-byte vector register size and scaled up by large vector register size. Key features: 1. Use overlapping load and store to avoid branch. 2. For size <= 8 times of vector register size, load all sources into registers and store them together. 3. If there is no address overlap bewteen source and destination, copy from both ends with 4 times of vector register size at a time. 4. If address of destination > address of source, backward copy 8 times of vector register size at a time. 5. Otherwise, forward copy 8 times of vector register size at a time. 6. Use rep movsb only for forward copy. Avoid slow backward rep movsb by fallbacking to backward copy 8 times of vector register size at a time. 7. Skip when address of destination == address of source. [BZ #19776] * sysdeps/x86_64/multiarch/Makefile (sysdep_routines): Add memmove-sse2-unaligned-erms, memmove-avx-unaligned-erms and memmove-avx512-unaligned-erms. * sysdeps/x86_64/multiarch/ifunc-impl-list.c (__libc_ifunc_impl_list): Test __memmove_chk_avx512_unaligned_2, __memmove_chk_avx512_unaligned_erms, __memmove_chk_avx_unaligned_2, __memmove_chk_avx_unaligned_erms, __memmove_chk_sse2_unaligned_2, __memmove_chk_sse2_unaligned_erms, __memmove_avx_unaligned_2, __memmove_avx_unaligned_erms, __memmove_avx512_unaligned_2, __memmove_avx512_unaligned_erms, __memmove_erms, __memmove_sse2_unaligned_2, __memmove_sse2_unaligned_erms, __memcpy_chk_avx512_unaligned_2, __memcpy_chk_avx512_unaligned_erms, __memcpy_chk_avx_unaligned_2, __memcpy_chk_avx_unaligned_erms, __memcpy_chk_sse2_unaligned_2, __memcpy_chk_sse2_unaligned_erms, __memcpy_avx_unaligned_2, __memcpy_avx_unaligned_erms, __memcpy_avx512_unaligned_2, __memcpy_avx512_unaligned_erms, __memcpy_sse2_unaligned_2, __memcpy_sse2_unaligned_erms, __memcpy_erms, __mempcpy_chk_avx512_unaligned_2, __mempcpy_chk_avx512_unaligned_erms, __mempcpy_chk_avx_unaligned_2, __mempcpy_chk_avx_unaligned_erms, __mempcpy_chk_sse2_unaligned_2, __mempcpy_chk_sse2_unaligned_erms, __mempcpy_avx512_unaligned_2, __mempcpy_avx512_unaligned_erms, __mempcpy_avx_unaligned_2, __mempcpy_avx_unaligned_erms, __mempcpy_sse2_unaligned_2, __mempcpy_sse2_unaligned_erms and __mempcpy_erms. * sysdeps/x86_64/multiarch/memmove-avx-unaligned-erms.S: New file. * sysdeps/x86_64/multiarch/memmove-avx512-unaligned-erms.S: Likwise. * sysdeps/x86_64/multiarch/memmove-sse2-unaligned-erms.S: Likwise. * sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S: Likwise.
2016-03-31S390: Extend structs La_s390_regs / La_s390_retval with vector-registers.Stefan Liebler
Starting with z13, vector registers can also occur as argument registers. Thus the passed input/output register structs for la_s390_[32|64]_gnu_plt[enter|exit] functions should reflect those new registers. This patch extends these structs La_s390_regs and La_s390_retval and adjusts _dl_runtime_profile() to handle those fields in case of running on a z13 machine. ChangeLog: * sysdeps/s390/bits/link.h: (La_s390_vr) New typedef. (La_s390_32_regs): Append vector register lr_v24-lr_v31. (La_s390_64_regs): Likewise. (La_s390_32_retval): Append vector register lrv_v24. (La_s390_64_retval): Likeweise. * sysdeps/s390/s390-32/dl-trampoline.h (_dl_runtime_profile): Handle extended structs La_s390_32_regs and La_s390_32_retval. * sysdeps/s390/s390-64/dl-trampoline.h (_dl_runtime_profile): Handle extended structs La_s390_64_regs and La_s390_64_retval.
2016-03-31S390: Save and restore fprs/vrs while resolving symbols.Stefan Liebler
On s390, no fpr/vrs were saved while resolving a symbol via _dl_runtime_resolve/_dl_runtime_profile. According to the abi, the fpr-arguments are defined as call clobbered. In leaf-functions, gcc 4.9 and newer can use fprs for saving/restoring gprs instead of saving them to the stack. If gcc do this in one of the resolver-functions, then the floating point arguments of a library-function are invalid for the first library-function-call. Thus, this patch saves/restores the fprs around the resolving code. The same could occur for vector registers. Furthermore an ifunc-resolver could also clobber the vector/floating point argument registers. Thus this patch provides the further variants _dl_runtime_resolve_vx/ _dl_runtime_profile_vx, which are used if the kernel claims, that we run on a machine with vector registers. Furthermore, if _dl_runtime_profile calls _dl_call_pltexit, the pointers to inregs-/outregs-structs were setup invalid. Now they point to the correct location in the stack-frame. Before branching back to the caller, the return values are now restored instead of containing the return values of the _dl_call_pltexit() call. On s390-32, an endless loop occurs if _dl_call_pltexit() should be called. Now, this code-path branches to this function instead of just after the preceding basr-instruction. ChangeLog: * sysdeps/s390/s390-32/dl-trampoline.S: Include dl-trampoline.h twice to create a non-vector/vector version for _dl_runtime_resolve and _dl_runtime_profile. Move implementation to ... * sysdeps/s390/s390-32/dl-trampoline.h: ... here. (_dl_runtime_resolve) Save and restore fpr/vrs. (_dl_runtime_profile) Save and restore vrs and fix some issues if _dl_call_pltexit is called. * sysdeps/s390/s390-32/dl-machine.h (elf_machine_runtime_setup): Choose the correct resolver function if running on a machine with vx. * sysdeps/s390/s390-64/dl-trampoline.S: Include dl-trampoline.h twice to create a non-vector/vector version for _dl_runtime_resolve and _dl_runtime_profile. Move implementation to ... * sysdeps/s390/s390-64/dl-trampoline.h: ... here. (_dl_runtime_resolve) Save and restore fpr/vrs. (_dl_runtime_profile) Save and restore vrs and fix some issues * sysdeps/s390/s390-64/dl-machine.h: (elf_machine_runtime_setup): Choose the correct resolver function if running on a machine with vx.
2016-03-31Fix tst-dlsym-error buildAdhemerval Zanella
This patch fixes the new test tst-dlsym-error build on aarch64 (and possible other architectures as well) due missing strchrnul definition. * elf/tst-dlsym-error.c: Include <string.h> for strchrnul.
2016-03-31Report dlsym, dlvsym lookup errors using dlerror [BZ #19509]Florian Weimer
* elf/dl-lookup.c (_dl_lookup_symbol_x): Report error even if skip_map != NULL. * elf/tst-dlsym-error.c: New file. * elf/Makefile (tests): Add tst-dlsym-error. (tst-dlsym-error): Link against libdl.
2016-03-29[microblaze] Remove __ASSUME_FUTIMESAT.Joseph Myers
MicroBlaze has a special version of futimesat.c because it gained the futimesat syscall later than other non-asm-generic architectures. Now the minimum kernel is recent enough that this syscall can always be assumed to be present for MicroBlaze, so this patch removes the special version and the __ASSUME_FUTIMESAT macro, resulting in the sysdeps/unix/sysv/linux/futimesat.c version being used. Untested. * sysdeps/unix/sysv/linux/microblaze/kernel-features.h (__ASSUME_FUTIMESAT): Remove macro. * sysdeps/unix/sysv/linux/microblaze/futimesat.c: Remove file.
2016-03-29CVE-2016-3075: Stack overflow in _nss_dns_getnetbyname_r [BZ #19879]Florian Weimer
The defensive copy is not needed because the name may not alias the output buffer.
2016-03-29nss_db: Propagate ERANGE error if parse_line fails [BZ #19837]Florian Weimer
Reproducer (needs to run as root): perl -e \ 'print "large:x:999:" . join(",", map {"user$_"} (1 .. 135))."\n"' \ >> /etc/group cd /var/db make getent -s db group After the fix, the last command should list the "large" group. The magic number 135 has been chosen so that the line is shorter than 1024 bytes, but the pointers required to encode the member array will cross the threshold, triggering the bug.
2016-03-28Initial Enhanced REP MOVSB/STOSB (ERMS) supportH.J. Lu
The newer Intel processors support Enhanced REP MOVSB/STOSB (ERMS) which has a feature bit in CPUID. This patch adds the Enhanced REP MOVSB/STOSB (ERMS) bit to x86 cpu-features. * sysdeps/x86/cpu-features.h (bit_cpu_ERMS): New. (index_cpu_ERMS): Likewise. (reg_ERMS): Likewise.
2016-03-28Synchronize <sys/personality.h> with kernel headersAurelien Jarno
<sys/personality.h> is out of sync with kernel headers, missing the UNAME26, FDPIC_FUNCPTRS and PER_LINUX_FDPIC entries. Fix that. Changelog: * sysdeps/unix/sysv/linux/sys/personality.h (UNAME26, FDPIC_FUNCPTRS, PER_LINUX_FDPIC): Add.
2016-03-28Make __memcpy_avx512_no_vzeroupper an aliasH.J. Lu
Since x86-64 memcpy-avx512-no-vzeroupper.S implements memmove, make __memcpy_avx512_no_vzeroupper an alias of __memmove_avx512_no_vzeroupper to reduce code size of libc.so. * sysdeps/x86_64/multiarch/Makefile (sysdep_routines): Remove memcpy-avx512-no-vzeroupper. * sysdeps/x86_64/multiarch/memcpy-avx512-no-vzeroupper.S: Renamed to ... * sysdeps/x86_64/multiarch/memmove-avx512-no-vzeroupper.S: This. (MEMCPY): Don't define. (MEMCPY_CHK): Likewise. (MEMPCPY): Likewise. (MEMPCPY_CHK): Likewise. (MEMPCPY_CHK): Renamed to ... (__mempcpy_chk_avx512_no_vzeroupper): This. (MEMPCPY_CHK): Renamed to ... (__mempcpy_chk_avx512_no_vzeroupper): This. (MEMCPY_CHK): Renamed to ... (__memmove_chk_avx512_no_vzeroupper): This. (MEMCPY): Renamed to ... (__memmove_avx512_no_vzeroupper): This. (__memcpy_avx512_no_vzeroupper): New alias. (__memcpy_chk_avx512_no_vzeroupper): Likewise.
2016-03-28Implement x86-64 multiarch mempcpy in memcpyH.J. Lu
Implement x86-64 multiarch mempcpy in memcpy to share most of code. It reduces code size of libc.so. [BZ #18858] * sysdeps/x86_64/multiarch/Makefile (sysdep_routines): Remove mempcpy-ssse3, mempcpy-ssse3-back, mempcpy-avx-unaligned and mempcpy-avx512-no-vzeroupper. * sysdeps/x86_64/multiarch/memcpy-avx-unaligned.S (MEMPCPY_CHK): New. (MEMPCPY): Likewise. * sysdeps/x86_64/multiarch/memcpy-avx512-no-vzeroupper.S (MEMPCPY_CHK): New. (MEMPCPY): Likewise. * sysdeps/x86_64/multiarch/memcpy-ssse3-back.S (MEMPCPY_CHK): New. (MEMPCPY): Likewise. * sysdeps/x86_64/multiarch/memcpy-ssse3.S (MEMPCPY_CHK): New. (MEMPCPY): Likewise. * sysdeps/x86_64/multiarch/mempcpy-avx-unaligned.S: Removed. * sysdeps/x86_64/multiarch/mempcpy-avx512-no-vzeroupper.S: Likewise. * sysdeps/x86_64/multiarch/mempcpy-ssse3-back.S: Likewise. * sysdeps/x86_64/multiarch/mempcpy-ssse3.S: Likewise.
2016-03-28[x86] Add a feature bit: Fast_Unaligned_CopyH.J. Lu
On AMD processors, memcpy optimized with unaligned SSE load is slower than emcpy optimized with aligned SSSE3 while other string functions are faster with unaligned SSE load. A feature bit, Fast_Unaligned_Copy, is added to select memcpy optimized with unaligned SSE load. [BZ #19583] * sysdeps/x86/cpu-features.c (init_cpu_features): Set Fast_Unaligned_Copy with Fast_Unaligned_Load for Intel processors. Set Fast_Copy_Backward for AMD Excavator processors. * sysdeps/x86/cpu-features.h (bit_arch_Fast_Unaligned_Copy): New. (index_arch_Fast_Unaligned_Copy): Likewise. * sysdeps/x86_64/multiarch/memcpy.S (__new_memcpy): Check Fast_Unaligned_Copy instead of Fast_Unaligned_Load.
2016-03-25resolv: Always set *resplen2 out parameter in send_dg [BZ #19791]Florian Weimer
Since commit 44d20bca52ace85850012b0ead37b360e3ecd96e (Implement second fallback mode for DNS requests), there is a code path which returns early, before *resplen2 is initialized. This happens if the name server address is immediately recognized as invalid (because of lack of protocol support, or if it is a broadcast address such 255.255.255.255, or another invalid address). If this happens and *resplen2 was non-zero (which is the case if a previous query resulted in a failure), __libc_res_nquery would reuse an existing second answer buffer. This answer has been previously identified as unusable (for example, it could be an NXDOMAIN response). Due to the presence of a second answer, no name server switching will occur. The result is a name resolution failure, although a successful resolution would have been possible if name servers have been switched and queries had proceeded along the search path. The above paragraph still simplifies the situation. Before glibc 2.23, if the second answer needed malloc, the stub resolver would still attempt to reuse the second answer, but this is not possible because __libc_res_nsearch has freed it, after the unsuccessful call to __libc_res_nquerydomain, and set the buffer pointer to NULL. This eventually leads to an assertion failure in __libc_res_nquery: /* Make sure both hp and hp2 are defined */ assert((hp != NULL) && (hp2 != NULL)); If assertions are disabled, the consequence is a NULL pointer dereference on the next line. Starting with glibc 2.23, as a result of commit e9db92d3acfe1822d56d11abcea5bfc4c41cf6ca (CVE-2015-7547: getaddrinfo() stack-based buffer overflow (Bug 18665)), the second answer is always allocated with malloc. This means that the assertion failure happens with small responses as well because there is no buffer to reuse, as soon as there is a name resolution failure which triggers a search for an answer along the search path. This commit addresses the issue by ensuring that *resplen2 is initialized before the send_dg function returns. This commit also addresses a bug where an invalid second reply is incorrectly returned as a valid to the caller.
2016-03-25tst-audit10: Fix compilation on compilers without bit_AVX512F [BZ #19860]Florian Weimer
[BZ# 19860] * sysdeps/x86_64/tst-audit10.c (avx512_enabled): Always return zero if the compiler does not provide the AVX512F bit.
2016-03-24Fix x86_64 / x86 powl inaccuracy for integer exponents (bug 19848).Joseph Myers
Bug 19848 reports cases where powl on x86 / x86_64 has error accumulation, for small integer exponents, larger than permitted by glibc's accuracy goals, at least in some rounding modes. This patch further restricts the exponent range for which the small-integer-exponent logic is used to limit the possible error accumulation. Tested for x86_64 and x86 and ulps updated accordingly. [BZ #19848] * sysdeps/i386/fpu/e_powl.S (p3): Rename to p2 and change value from 8 to 4. (__ieee754_powl): Compare integer exponent against 4 not 8. * sysdeps/x86_64/fpu/e_powl.S (p3): Rename to p2 and change value from 8 to 4. (__ieee754_powl): Compare integer exponent against 4 not 8. * math/auto-libm-test-in: Add more tests of pow. * math/auto-libm-test-out: Regenerated. * sysdeps/i386/i686/fpu/multiarch/libm-test-ulps: Update. * sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
2016-03-23Assume __NR_utimensat is always definedAurelien Jarno
With the 2.6.32 minimum kernel on x86 and 3.2 on other architectures, __NR_utimensat is always defined. Changelog: * sysdeps/unix/sysv/linux/futimens.c (futimens) [__NR_utimensat]: Make code unconditional. [!__NR_utimensat]: Remove conditional code. * sysdeps/unix/sysv/linux/lutimes.c (lutimes) [__NR_utimensat]: Make code unconditional. [!__NR_utimensat]: Remove conditional code. * sysdeps/unix/sysv/linux/utimensat.c (utimensat) [__NR_utimensat]: Make code unconditional. [!__NR_utimensat]: Remove conditional code.
2016-03-23Assume __NR_openat is always definedAurelien Jarno
With the 2.6.32 minimum kernel on x86 and 3.2 on other architectures, __NR_openat is always defined. Changelog: * sysdeps/unix/sysv/linux/dl-openat64.c (openat64) [__NR_openat]: Make code unconditional.
2016-03-23x86, pthread_cond_*wait: Do not depend on %eax not being clobberedNick Alcock
The x86-specific versions of both pthread_cond_wait and pthread_cond_timedwait have (in their fall-back-to-futex-wait slow paths) calls to __pthread_mutex_cond_lock_adjust followed by __pthread_mutex_unlock_usercnt, which load the parameters before the first call but then assume that the first parameter, in %eax, will survive unaffected. This happens to have been true before now, but %eax is a call-clobbered register, and this assumption is not safe: it could change at any time, at GCC's whim, and indeed the stack-protector canary checking code clobbers %eax while checking that the canary is uncorrupted. So reload %eax before calling __pthread_mutex_unlock_usercnt. (Do this unconditionally, even when stack-protection is not in use, because it's the right thing to do, it's a slow path, and anything else is dicing with death.) * sysdeps/unix/sysv/linux/i386/pthread_cond_timedwait.S: Reload call-clobbered %eax on retry path. * sysdeps/unix/sysv/linux/i386/pthread_cond_wait.S: Likewise.
2016-03-22Don't set %rcx twice before "rep movsb"H.J. Lu
* sysdeps/x86_64/multiarch/memcpy-avx-unaligned.S (MEMCPY): Don't set %rcx twice before "rep movsb".
2016-03-22Set index_arch_AVX_Fast_Unaligned_Load only for Intel processorsH.J. Lu
Since only Intel processors with AVX2 have fast unaligned load, we should set index_arch_AVX_Fast_Unaligned_Load only for Intel processors. Move AVX, AVX2, AVX512, FMA and FMA4 detection into get_common_indeces and call get_common_indeces for other processors. Add CPU_FEATURES_CPU_P and CPU_FEATURES_ARCH_P to aoid loading GLRO(dl_x86_cpu_features) in cpu-features.c. [BZ #19583] * sysdeps/x86/cpu-features.c (get_common_indeces): Remove inline. Check family before setting family, model and extended_model. Set AVX, AVX2, AVX512, FMA and FMA4 usable bits here. (init_cpu_features): Replace HAS_CPU_FEATURE and HAS_ARCH_FEATURE with CPU_FEATURES_CPU_P and CPU_FEATURES_ARCH_P. Set index_arch_AVX_Fast_Unaligned_Load for Intel processors with usable AVX2. Call get_common_indeces for other processors with family == NULL. * sysdeps/x86/cpu-features.h (CPU_FEATURES_CPU_P): New macro. (CPU_FEATURES_ARCH_P): Likewise. (HAS_CPU_FEATURE): Use CPU_FEATURES_CPU_P. (HAS_ARCH_FEATURE): Use CPU_FEATURES_ARCH_P.
2016-03-22Fix malloc threaded tests link on non-LinuxSamuel Thibault
* malloc/Makefile ($(objpfx)tst-malloc-backtrace, $(objpfx)tst-malloc-thread-exit, $(objpfx)tst-malloc-thread-fail): Use $(shared-thread-library) instead of hardcoding the path to libpthread.
2016-03-22Remove __ASSUME_GETDENTS64_SYSCALL.Joseph Myers
This patch removes the __ASSUME_GETDENTS64_SYSCALL macro, as its definition is constant given the new kernel version requirements (and was constant anyway before those requirements except for MIPS n32). Note that the "#ifdef __NR_getdents64" conditional *is* still needed, because MIPS n64 only has the getdents syscall (being a 64-bit ABI, that syscall is 64-bit; the difference between the two on 64-bit architectures is where d_type goes). If MIPS n64 were to gain the getdents64 syscall and we wanted to use it conditionally on the kernel version at runtime we'd have to revert this patch, but I think that's unlikely (and in any case, we could follow the simpler approach of undefining __NR_getdents64 if the syscall can't be assumed, just like we do for accept4 / recvmmsg / sendmmsg syscalls on architectures where socketcall support came first). Most of the getdents.c changes are reindentation. Tested for x86_64 and x86 that installed stripped shared libraries are unchanged by the patch. * sysdeps/unix/sysv/linux/kernel-features.h (__ASSUME_GETDENTS64_SYSCALL): Remove macro. * sysdeps/unix/sysv/linux/getdents.c [!__ASSUME_GETDENTS64_SYSCALL]: Remove conditional code. [!have_no_getdents64_defined]: Likewise. (__GETDENTS): Remove __have_no_getdents64 conditional.
2016-03-21Remove __ASSUME_SIGNALFD4.Joseph Myers
Current Linux kernel version requirements mean the signalfd4 syscall can always be assumed to be available. This patch removes __ASSUME_SIGNALFD4 and associated conditionals. Tested for x86_64 and x86 that installed stripped shared libraries are unchanged by the patch. * sysdeps/unix/sysv/linux/kernel-features.h (__ASSUME_SIGNALFD4): Remove macro. * sysdeps/unix/sysv/linux/signalfd.c: Do not include <kernel-features.h>. (signalfd) [__NR_signalfd4]: Make code unconditional. (signalfd) [!__ASSUME_SIGNALFD4]: Remove conditional code.
2016-03-21posix: Fix posix_spawn implict check styleAdhemerval Zanella
This patch fixes the implicit check style add in 2a69f853c for the general convention one. Checked on x86_64. * sysdeps/unix/sysv/linux/spawni.c (__spawnix): Fix implict checks style.
2016-03-21Use JUMPTARGET in x86-64 pthreadH.J. Lu
When PLT may be used, JUMPTARGET should be used instead calling the function directly. * sysdeps/unix/sysv/linux/x86_64/cancellation.S (__pthread_enable_asynccancel): Use JUMPTARGET to call __pthread_unwind. * sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S (__condvar_cleanup2): Use JUMPTARGET to call _Unwind_Resume. * sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S (__condvar_cleanup1): Likewise.
2016-03-21localedata: standardize copyright/license information [BZ #11213]Mike Frysinger
Use the language from the FSF in all locale files to disclaim any license/copyright on locale data. See https://sourceware.org/ml/libc-locales/2013-q1/msg00048.html
2016-03-21math: don't clobber old libm.so on install [BZ #19822]Dylan Alex Simon
When installing glibc (w/mathvec enabled) in-place on a system with a glibc w/out mathvec enabled, the install will clobber the existing libm.so (e.g., /lib64/libm-2.21.so) with a linker script. This is because libm.so is a symlink to libm.so.6 which is a symlink to the final libm-2.21.so file. When the makefile writes the linker script directly to libm.so, it gets clobbered. The simple patch below to math/Makefile fixes this. It is based on the nptl Makefile, which does exactly the same thing in a safer way.
2016-03-21localedata: standardize first few linesMike Frysinger
Purely a style touchup to make sure the headers all look the same.
2016-03-20posix: Fix posix_spawn invalid memory accessAdhemerval Zanella
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.
2016-03-20hurd: Add c++-types expected resultSamuel Thibault
* sysdeps/mach/hurd/i386/c++-types.data: New file.
2016-03-20hurd: Allow inlining IO locksSamuel Thibault
* sysdeps/mach/hurd/libc-lock.h (_IO_lock_inexpensive): Define to 1.
2016-03-20hurd: Do not hide rtld symbols which need to be preemptedSamuel Thibault
* 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.
2016-03-20Fix mach-syscalls.mk buildSamuel Thibault
* mach/Makefile ($(objpfx)mach-syscalls.mk): Depend on libc-modules.h.
2016-03-20hurd: Break errnos.d / libc-modules.h dependency loopSamuel Thibault
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,
2016-03-17Remove __ASSUME_EVENTFD2, move eventfd to syscalls.list.Joseph Myers
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.
2016-03-17Remove __ASSUME_FALLOCATE.Joseph Myers
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.
2016-03-16Use JUMPTARGET in x86-64 mathvecH.J. Lu
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.
2016-03-16add ChangeLog entryMike Frysinger
2016-03-16localedata: use same comment_char/escape_char in these filesMike Frysinger
These files are small and easy to convert to what most others use.
2016-03-16localedata: an_ES: fix case of lang_abCarlos O'Donell
This needs to be lowercase to match the local ISO 639 database.
2016-03-16Fix hurd buildSamuel Thibault
* 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.
2016-03-15Fix building glibc master with NDEBUG and --with-cpu.Carlos O'Donell
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.
2016-03-15Remove __ASSUME_PPOLL.Joseph Myers
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.
2016-03-15Adjust kernel-features.h defaults for socket syscalls.Joseph Myers
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.
2016-03-15Fix resource leak in resolver (bug 19257)Andreas Schwab
The number of currently defined nameservers is stored in ->nscount, whereas ->_u._ext.nscount is set by __libc_res_nsend only after local initializations.
2016-03-15Fix compilation of test-signgam-* testsAndreas Schwab
2016-03-14Update glibc headers for Linux 4.5.Joseph Myers
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.
2016-03-14Remove mention of checktab.awk in timezone/README.Carlos O'Donell
2016-03-13Fix flag test in waitid compatibility layerSamuel Thibault
* sysdeps/posix/waitid.c (OUR_WAITID): Test against WSTOPPED instead of WUNTRACED.
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