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2018-12-05Add __vfscanf_internal and __vfwscanf_internal with flags arguments.Zack Weinberg35-3128/+3351
There are two flags currently defined: SCANF_LDBL_IS_DBL is the mode used by __nldbl_ scanf variants, and SCANF_ISOC99_A is the mode used by __isoc99_ scanf variants. In this patch, the new functions honor these flag bits if they're set, but they still also look at the corresponding bits of environmental state, and callers all pass zero. The new functions do *not* have the "errp" argument possessed by _IO_vfscanf and _IO_vfwscanf. All internal callers passed NULL for that argument. External callers could theoretically exist, so I preserved wrappers, but they are flagged as compat symbols and they don't preserve the three-way distinction among types of errors that was formerly exposed. These functions probably should have been in the list of deprecated _IO_ symbols in 2.27 NEWS -- they're not just aliases for vfscanf and vfwscanf. (It was necessary to introduce ldbl_compat_symbol for _IO_vfscanf. Please check that part of the patch very carefully, I am still not confident I understand all of the details of ldbl-opt.) This patch also introduces helper inlines in libio/strfile.h that encapsulate the process of initializing an _IO_strfile object for reading. This allows us to call __vfscanf_internal directly from sscanf, and __vfwscanf_internal directly from swscanf, without duplicating the initialization code. (Previously, they called their v-counterparts, but that won't work if we want to control *both* C99 mode and ldbl-is-dbl mode using the flags argument to__vfscanf_internal.) It's still a little awkward, especially for wide strfiles, but it's much better than what we had. Tested for powerpc and powerpc64le.
2018-12-05Y2038: make __tz_convert compatible with 64-bit-timeAlbert ARIBAUD (3ADEV)7-41/+43
Now that __time64_t exists, we can switch internal function __tz_convert from 32-bit to 64-bit time. This involves switching some other internal functions as well, namely __tz_compute and __offtime. Tested with 'make check' on x86_64-linux-gnu and i686-linux.gnu. * include/time.h (__tz_compute): Replace time_t with __time64_t. (__tz_convert): Replace time_t* with __time64_t. (__offtime): Replace time_t* with __time64_t. * time/gmtime.c (__gmtime_r): Adjust call to __tz_convert. (gmtime): Likewise. * time/localtime.c (__localtime_r): Likewise. (localtime): Likewise. * time/offtime.c: Replace time_t with __time64_t. * time/tzset.c: Likewise.
2018-12-04Stop test-in-container trying to run other-OS binaries.Joseph Myers2-0/+7
I noticed that, now that build-many-glibcs.py no longer copies glibc sources, I was getting core dumps in my glibc source directories. The cause appears to be, from the i686-gnu build: for dso in ` env LD_TRACE_LOADED_OBJECTS=1 \ /scratch/jmyers/glibc-bot/build/glibcs/i686-gnu/glibc/elf/ld.so.1 \ /scratch/jmyers/glibc-bot/build/glibcs/i686-gnu/glibc/testroot.pristine/bin/sh \ [...] Segmentation fault (core dumped) In this case, the x86 architecture means the binary executes, but dumps core rather than actually working. Anything involving running the newly built glibc should only be done ifeq ($(run-built-tests),yes). This patch conditions the relevant part of the testroot setup accordingly. Tested for x86_64, and with build-many-glibcs.py for i686-gnu. * Makefile ($(objpfx)testroot.pristine/install.stamp): Do not run dynamic linker unless [$(run-built-tests) = yes].
2018-12-04test-container: add "su" command to run test as root, add unshare hintsDJ Delorie2-4/+70
* support/test-container.c (check_for_unshare_hints): New. (main): Call it if unshare fails. Add support for "su" scriptlet command.
2018-12-03Make gen-as-const.py handle '--' consistently with awk script.Joseph Myers2-29/+43
It was reported in <https://sourceware.org/ml/libc-alpha/2018-12/msg00045.html> that gen-as-const.py fails to generate test code in the case where a .sym file has no symbols in it, so resulting in a test failing to link for Hurd. The relevant difference from the old awk script is that the old script treated '--' lines as indicating that the text to do at the start of the test (or file used to compute constants) should be output at that point if not already output, as well as treating lines with actual entries for constants like that. This patch changes gen-as-const.py accordingly, making it the sole responsibility of the code parsing .sym files to determine when such text should be output and ensuring it's always output at some point even if there are no symbols and no '--' lines, since not outputting it means the test fails to link. Handling '--' like that also avoids any problems that would arise if the first entry for a symbol were inside #ifdef (since the text in question must not be output inside #ifdef). Tested for x86_64, and with build-many-glibcs.py for i686-gnu. Note that there are still compilation test failures for i686-gnu (linknamespace tests, possibly arising from recent posix_spawn-related changes). * scripts/gen-as-const.py (compute_c_consts): Take an argument 'START' to indicate that start text should be output. (gen_test): Likewise. (main): Generate 'START' for first symbol or '--' line, or at end of input if not previously generated.
2018-12-03Enable VDSO for static linking on armRafael Ávila de Espíndola4-10/+16
I have tested that this builds and the resulting program still work. The kernel in gcc117 (which I ussed for testing) seems to be missing https://patchwork.kernel.org/patch/10060431/, so the vdso is never used. [BZ #19767] * sysdeps/unix/sysv/linux/arm/init-first.c: Remove #ifdef SHARED. * sysdeps/unix/sysv/linux/arm/libc-vdso.h: Remove #ifdef SHARED. * sysdeps/unix/sysv/linux/arm/sysdep.h: Define ALWAYS_USE_VSYSCALL.
2018-12-03posix: Fix segfault in maybe_script_executeAdhemerval Zanella2-1/+7
This patch is essentially 28669f86f6 adjusted for the generic implementation. Checked on x86_64-linux-gnu with Linux spawni.c removed. The only failure is posix/tst-spawn3, which is expected. [BZ #23913] * sysdeps/posix/spawni.c (maybe_script_execute): Increment size of new_argv by one.
2018-12-03Add --no-hard-links option to localedef (bug 23923)Carlos O'Donell5-5/+39
Downstream distributions need consistent sets of hardlinks in order for rpm to operate effectively. This means that even if locales are built with a high level of parallelism that the resulting files need to have consistent hardlink counts. The only way to achieve this is with a post-install hardlink pass using a program like 'hardlink' (shipped in Fedora). If the downstream distro wants to post-process the hardlinks then the time spent in localedef looking up sibling directories and processing hardlinks is wasted effort. To optimize the build and install pass we add a --no-hard-links option to localedef to avoid doing the hardlink optimziation for size. Tested on x86_64 with 'make localedata/install-locale-files' before and after. Without the patch we have files with 100+ hardlink counts. After the patch and running with --no-hard-links all link counts are 1. This patch also alters the convenience target 'make localedata/install-locale-files' to use the new option. Signed-off-by: Carlos O'Donell <carlos@redhat.com>
2018-12-03x86: Extend CPUID support in struct cpu_featuresH.J. Lu7-245/+1294
Extend CPUID support for all feature bits from CPUID. Add a new macro, CPU_FEATURE_USABLE, which can be used to check if a feature is usable at run-time, instead of HAS_CPU_FEATURE and HAS_ARCH_FEATURE. Add COMMON_CPUID_INDEX_D_ECX_1, COMMON_CPUID_INDEX_80000007 and COMMON_CPUID_INDEX_80000008 to check CPU feature bits in them. Tested on i686 and x86-64 as well as using build-many-glibcs.py with x86 targets. * sysdeps/x86/cacheinfo.c (intel_check_word): Updated for cpu_features_basic. (__cache_sysconf): Likewise. (init_cacheinfo): Likewise. * sysdeps/x86/cpu-features.c (get_extended_indeces): Also populate COMMON_CPUID_INDEX_80000007 and COMMON_CPUID_INDEX_80000008. (get_common_indices): Also populate COMMON_CPUID_INDEX_D_ECX_1. Use CPU_FEATURES_CPU_P (cpu_features, XSAVEC) to check if XSAVEC is available. Set the bit_arch_XXX_Usable bits. (init_cpu_features): Use _Static_assert on index_arch_Fast_Unaligned_Load. __get_cpuid_registers and __get_arch_feature. Updated for cpu_features_basic. Set stepping in cpu_features. * sysdeps/x86/cpu-features.h: (FEATURE_INDEX_1): Changed to enum. (FEATURE_INDEX_2): New. (FEATURE_INDEX_MAX): Changed to enum. (COMMON_CPUID_INDEX_D_ECX_1): New. (COMMON_CPUID_INDEX_80000007): Likewise. (COMMON_CPUID_INDEX_80000008): Likewise. (cpuid_registers): Likewise. (cpu_features_basic): Likewise. (CPU_FEATURE_USABLE): Likewise. (bit_arch_XXX_Usable): Likewise. (cpu_features): Use cpuid_registers and cpu_features_basic. (bit_arch_XXX): Reweritten. (bit_cpu_XXX): Likewise. (index_cpu_XXX): Likewise. (reg_XXX): Likewise. * sysdeps/x86/tst-get-cpu-features.c: Include <stdio.h> and <support/check.h>. (CHECK_CPU_FEATURE): New. (CHECK_CPU_FEATURE_USABLE): Likewise. (cpu_kinds): Likewise. (do_test): Print vendor, family, model and stepping. Check HAS_CPU_FEATURE and CPU_FEATURE_USABLE. (TEST_FUNCTION): Removed. Include <support/test-driver.c> instead of "../../test-skeleton.c". * sysdeps/x86_64/multiarch/sched_cpucount.c (__sched_cpucount): Check POPCNT instead of POPCOUNT. * sysdeps/x86_64/multiarch/test-multiarch.c (do_test): Likewise.
2018-12-03Fix test-as-const-jmp_buf-ssp.c generation on gnu-i386Samuel Thibault2-1/+6
hurd's jmp_buf-ssp.sym does not define any symbol. scripts/gen-as-const.py currently was emitting an empty line in that case, and the gawk invocation was prepending "asconst_" to it, ending up with: .../build/glibc/setjmp/test-as-const-jmp_buf-ssp.c:1:2: error: expected « = », « , », « ; », « asm » or « __attribute__ » at end of input 1 | asconst_ | ^~~~~~~~ * scripts/gen-as-const.py (main): Avoid emitting empty line when there is no element in `consts'.
2018-12-01support: Close original descriptors in support_capture_subprocessFlorian Weimer2-0/+12
2018-12-01htl: Fix comparing attr with default valuesSamuel Thibault5-4/+16
Fortunately we were previously only missing an optimization. Thanks dcb <dcb314@hotmail.com> for the report [BZ #23032] * sysdeps/htl/pt-barrier-init.c (pthread_barrier_init): Fix comparing attr with __pthread_default_barrierattr. * sysdeps/htl/pt-cond-init.c (__pthread_cond_init): Fix comparing attr with __pthread_default_condattr. * sysdeps/htl/pt-mutex-init.c (_pthread_mutex_init): Fix comparing attr with __pthread_default_mutexattr. * sysdeps/htl/pt-rwlock-init.c (_pthread_rwlock_init): Fix comparing attr with __pthread_default_rwlockattr.
2018-12-01Mutex: Add pthread mutex tunablesKemi Wang11-6/+190
This patch does not have any functionality change, we only provide a spin count tunes for pthread adaptive spin mutex. The tunable glibc.pthread.mutex_spin_count tunes can be used by system administrator to squeeze system performance according to different hardware capabilities and workload characteristics. The maximum value of spin count is limited to 32767 to avoid the overflow of mutex->__data.__spins variable with the possible type of short in pthread_mutex_lock (). The default value of spin count is set to 100 with the reference to the previous number of times of spinning via trylock. This value would be architecture-specific and can be tuned with kinds of benchmarks to fit most cases in future. I would extend my appreciation sincerely to H.J.Lu for his help to refine this patch series. * manual/tunables.texi (POSIX Thread Tunables): New node. * nptl/Makefile (libpthread-routines): Add pthread_mutex_conf. * nptl/nptl-init.c: Include pthread_mutex_conf.h (__pthread_initialize_minimal_internal) [HAVE_TUNABLES]: Call __pthread_tunables_init. * nptl/pthreadP.h (MAX_ADAPTIVE_COUNT): Remove. (max_adaptive_count): Define. * nptl/pthread_mutex_conf.c: New file. * nptl/pthread_mutex_conf.h: New file. * sysdeps/generic/adaptive_spin_count.h: New file. * sysdeps/nptl/dl-tunables.list: New file. * nptl/pthread_mutex_lock.c (__pthread_mutex_lock): Use max_adaptive_count () not MAX_ADAPTIVE_COUNT. * nptl/pthread_mutex_timedlock.c (__pthrad_mutex_timedlock): Likewise. Suggested-by: Andi Kleen <andi.kleen@intel.com> Reviewed-by: Carlos O'Donell <carlos@redhat.com> Signed-off-by: Kemi.wang <kemi.wang@intel.com>
2018-11-30stdlib: assert on NULL function pointer in atexit etc. [BZ #20544]Paul Pluzhnikov5-1/+133
2018-11-30Enable VDSO on i386 statically linked programsRafael Ávila de Espíndola3-7/+15
[BZ #19767] * sysdeps/unix/sysv/linux/i386/init-first.c: Don't check SHARED. * sysdeps/unix/sysv/linux/i386/sysdep.h (ALWAYS_USE_VSYSCALL): New.
2018-11-30scripts/abilist.awk: Handle special _end symbol for HurdFlorian Weimer3-3/+17
Hurd has this in libc.so: 0024db9c g D .bss 00000000 GLIBC_2.2.6 _end This g/D combination was not recognized before.
2018-11-30Fix ChangeLog date from previous commitAdhemerval Zanella1-1/+1
2018-11-30posix: Use posix_spawn on systemAdhemerval Zanella9-255/+131
This patch uses posix_spawn on system implementation. On Linux this has the advantage of much lower memory consumption (usually 32 Kb minimum for the mmap stack area). Although POSIX does not require, glibc system implementation aims to be thread and cancellation safe. The cancellation code is moved to generic implementation and enabled iff SIGCANCEL is defined (similar on how the cancellation handler is enabled on nptl-init.c). Checked on x86_64-linux-gnu, i686-linux-gnu, aarch64-linux-gnu, arm-linux-gnueabihf, and powerpc64le-linux-gnu. * sysdeps/unix/sysv/linux/spawni.c (__spawni_child): Use __sigismember instead of sigismember. * sysdeps/posix/system.c [SIGCANCEL] (cancel_handler_args, cancel_handler): New definitions. (CLEANUP_HANDLER, CLEANUP_RESET): Likewise. (DO_LOCK, DO_UNLOCK, INIT_LOCK, ADD_REF, SUB_REF): Remove. (do_system): Use posix_spawn instead of fork and execl and remove reentracy code. * sysdeps/generic/not-errno.h (__kill_noerrno): New prototype. * sysdeps/unix/sysv/linux/not-errno.h (__kill_noerrno): Likewise. * sysdeps/unix/sysv/linux/ia64/system.c: Remove file. * sysdeps/unix/sysv/linux/s390/system.c: Likewise. * sysdeps/unix/sysv/linux/sparc/system.c: Likewise. * sysdeps/unix/sysv/linux/system.c: Likewise.
2018-11-30posix: Use posix_spawn on popenAdhemerval Zanella3-47/+99
This patch uses posix_spawn on popen instead of fork and execl. On Linux this has the advantage of much lower memory consumption (usually 32 Kb minimum for the mmap stack area). Two issues are also fixed with this change: * BZ#17490: although POSIX pthread_atfork description only list 'fork' as the function that should execute the atfork handlers, popen description states that: '[...] shall be *as if* a child process were created within the popen() call using the fork() function [...]' Other libc/system seems to follow the idea atfork handlers should not be executed for popen: libc/system | run atfork handles | notes ------------|----------------------|--------------------------------------- Freebsd | no | uses vfork Solaris 11 | no | MacOSX 11 | no | implemented through posix_spawn syscall ------------|----------------------|---------------------------------------- Similar to posix_spawn and system, popen idea is to spawn a different binary so all the POSIX rationale to run the atfork handlers to avoid internal process inconsistency is not really required and in some cases might be unsafe. * BZ#22834: the described scenario, where the forked process might access invalid memory due an inconsistent state in multithreaded environment, should not happen because posix_spawn does not access the affected data structure (proc_file_chain). Checked on x86_64-linux-gnu and i686-linux-gnu. [BZ #22834] [BZ #17490] * NEWS: Add new semantic for atfork with popen and system. * libio/iopopen.c (_IO_new_proc_open): use posix_spawn instead of fork and execl.
2018-11-30Fix _dl_profile_fixup data-dependency issue (Bug 23690)Tulio Magno Quites Machado Filho8-7/+359
There is a data-dependency between the fields of struct l_reloc_result and the field used as the initialization guard. Users of the guard expect writes to the structure to be observable when they also observe the guard initialized. The solution for this problem is to use an acquire and release load and store to ensure previous writes to the structure are observable if the guard is initialized. The previous implementation used DL_FIXUP_VALUE_ADDR (l_reloc_result->addr) as the initialization guard, making it impossible for some architectures to load and store it atomically, i.e. hppa and ia64, due to its larger size. This commit adds an unsigned int to l_reloc_result to be used as the new initialization guard of the struct, making it possible to load and store it atomically in all architectures. The fix ensures that the values observed in l_reloc_result are consistent and do not lead to crashes. The algorithm is documented in the code in elf/dl-runtime.c (_dl_profile_fixup). Not all data races have been eliminated. Tested with build-many-glibcs and on powerpc, powerpc64, and powerpc64le. [BZ #23690] * elf/dl-runtime.c (_dl_profile_fixup): Guarantee memory modification order when accessing reloc_result->addr. * include/link.h (reloc_result): Add field init. * nptl/Makefile (tests): Add tst-audit-threads. (modules-names): Add tst-audit-threads-mod1 and tst-audit-threads-mod2. Add rules to build tst-audit-threads. * nptl/tst-audit-threads-mod1.c: New file. * nptl/tst-audit-threads-mod2.c: Likewise. * nptl/tst-audit-threads.c: Likewise. * nptl/tst-audit-threads.h: Likewise. Signed-off-by: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com> Reviewed-by: Carlos O'Donell <carlos@redhat.com>
2018-11-30Replace gen-as-const.awk by gen-as-const.py.Joseph Myers4-74/+174
This patch replaces gen-as-const.awk, and some fragments of the Makefile code that used it, by a Python script. The point is not such much that awk is problematic for this particular script, as that I'd like to build up a general Python infrastructure for extracting information from C headers, for use in writing tests of such headers. Thus, although this patch does not set up such infrastructure, the compute_c_consts function in gen-as-const.py might be moved to a separate Python module in a subsequent patch as a starting point for such infrastructure. The general idea of the code is the same as in the awk version, but no attempt is made to make the output files textually identical. When generating a header, a dict of constant names and values is generated internally then defines are printed in sorted order (rather than the order in the .sym file, which would have been used before). When generating a test that the values computed match those from a normal header inclusion, the test code is made into a compilation test using _Static_assert, where previously the comparisons were done only when the test was executed. One fragment of test generation (converting the previously generated header to use asconst_* prefixes on its macro names) is still in awk code in the makefiles; only the .sym processing and subsequent execution of the compiler to extract constants have moved to the Python script. Tested for x86_64, and with build-many-glibcs.py. * scripts/gen-as-const.py: New file. * scripts/gen-as-const.awk: Remove. * Makerules ($(common-objpfx)%.h $(common-objpfx)%.h.d): Use gen-as-const.py. ($(objpfx)test-as-const-%.c): Likewise.
2018-11-29elf/dl-exception.c: Include <_itoa.h> for _itoa prototypeH.J. Lu2-0/+5
Tested with build-many-glibcs.py. * elf/dl-exception.c: Include <_itoa.h>.
2018-11-30hurd: Fix returning value for fcntl(F_*LK*)Samuel Thibault2-6/+9
to avoid calling va_end again, etc. * sysdeps/mach/hurd/fcntl.c (__libc_fcntl): Directly return value returned by __f_setlk.
2018-11-29_dl_exception_create_format: Support %x/%lx/%zxH.J. Lu4-1/+153
Add support for %x, %lx and %zx to _dl_exception_create_format and pad to the full width with 0. * elf/Makefile (tests-internal): Add tst-create_format1. * elf/dl-exception.c (_dl_exception_create_format): Support %x, %lx and %zx. * elf/tst-create_format1.c: New file.
2018-11-29argp: do not call _IO_fwide() if _LIBC is not definedCharles-Antoine Couret3-0/+13
_IO_fwide() is defined in libio.h file. This file is included only when _LIBC is defined. So, in case of compilation of these files without _LIBC definition, the compilation failed due to this unknown function. Now this function is called when libio.h file is included. (Change merged from gnulib. Tested on x86_64.) * argp/argp-fmtstream.c (__argp_fmtstream_update): Use [_LIBC] conditional on calls to _IO_fwide and putwc_unlocked. (Merge from gnulib.) * argp/argp-help.c (__argp_failure): Likewise.
2018-11-29C-SKY: Add dynamic relocations to elf.hMao Han2-1/+90
* elf/elf.h (EM_CSKY, R_CKCORE_NONE, R_CKCORE_ADDR32) (R_CKCORE_PCRELIMM8BY4, R_CKCORE_PCRELIMM11BY2, R_CKCORE_PCREL32) (R_CKCORE_PCRELJSR_IMM11BY2, R_CKCORE_RELATIVE, R_CKCORE_COPY) (R_CKCORE_GLOB_DAT, R_CKCORE_JUMP_SLOT, R_CKCORE_GOTOFF) (R_CKCORE_GOTPC, R_CKCORE_GOT32, R_CKCORE_PLT32, R_CKCORE_ADDRGOT) (R_CKCORE_ADDRPLT, R_CKCORE_PCREL_IMM26BY2, R_CKCORE_PCREL_IMM16BY2) (R_CKCORE_PCREL_IMM16BY4, R_CKCORE_PCREL_IMM10BY2) (R_CKCORE_PCREL_IMM10BY4, R_CKCORE_ADDR_HI16, R_CKCORE_ADDR_LO16) (R_CKCORE_GOTPC_HI16, R_CKCORE_GOTPC_LO16, R_CKCORE_GOTOFF_HI16) (R_CKCORE_GOTOFF_LO16, R_CKCORE_GOT12, R_CKCORE_GOT_HI16) (R_CKCORE_GOT_LO16, R_CKCORE_PLT12, R_CKCORE_PLT_HI16) (R_CKCORE_PLT_LO16, R_CKCORE_ADDRGOT_HI16, R_CKCORE_ADDRGOT_LO16) (R_CKCORE_ADDRPLT_HI16, R_CKCORE_ADDRPLT_LO16) (R_CKCORE_PCREL_JSR_IMM26BY2, R_CKCORE_TOFFSET_LO16) (R_CKCORE_DOFFSET_LO16, R_CKCORE_PCREL_IMM18BY2) (R_CKCORE_DOFFSET_IMM18, R_CKCORE_DOFFSET_IMM18BY2) (R_CKCORE_DOFFSET_IMM18BY4, R_CKCORE_GOT_IMM18BY4) (R_CKCORE_PLT_IMM18BY4, R_CKCORE_PCREL_IMM7BY4, R_CKCORE_TLS_LE32) (R_CKCORE_TLS_IE32, R_CKCORE_TLS_GD32, R_CKCORE_TLS_LDM32) (R_CKCORE_TLS_LDO32, R_CKCORE_TLS_DTPMOD32, R_CKCORE_TLS_DTPOFF32) (R_CKCORE_TLS_TPOFF32): New defines.
2018-11-29posix: Do not include testcases.h, ptestcases.h in source treeFlorian Weimer5-501/+22
These files were both auto-generated and shipped in the source tree. We can assume that sed is available and always generate the files during the build.
2018-11-28support: Add signal support to support_capture_subprocess_checkFlorian Weimer5-28/+77
Signal zero does not terminate a process, so it is safe to use negative values for signal numbers. Adjust libio/tst-vtables-common.c to use this new functionality, instead of determining the termination status for a signal indirectly.
2018-11-28Do not copy glibc sources in build-many-glibcs.py.Joseph Myers2-21/+7
Now that build-many-glibcs.py touches at checkout time all files that might get rebuilt in the glibc source directory in a normal glibc build and test run, this patch stops the script from copying the glibc source directory, so that all builds use the original directory directly (and less disk space is used, less I/O is involved and cached copies of the sources in memory can be shared between all the builds - as well as avoiding spurious failures from copying while "git gc" is running). This is similar to how all other components were already handled. Any bugs involving writing into the source directory can be dealt with in future as normal bugs, just as such bugs already are handled. Tested with build-many-glibcs.py runs with a read-only glibc source directory, with all files not touched by the script having timestamps in forwards alphabetical order and separately with all files not touched by the script having timestamps in backwards alphabetical order. * scripts/build-many-glibcs.py (Glibc.build_glibc): Use original source directory instead of a copy. (CommandList.create_copy_dir): Remove.
2018-11-28S390: Regenerate ULPs.Stefan Liebler2-12/+12
Regenerated ulps from scratch as builds with gcc 5.5 / 6.4 resulted in +1 ulps. ChangeLog: * sysdeps/s390/fpu/libm-test-ulps: Regenerated.
2018-11-28support_quote_string: Do not use str parameter nameFlorian Weimer2-2/+7
This avoids a build failure if this identifier is used as a macro in a test.
2018-11-27Fix Hurd build with read-only source directory.Joseph Myers2-3/+9
The logic for generating sysdeps/mach/hurd/bits/errno.h involves a stamp file and $(move-if-change). The temporary file (generated unconditionally) is generated in the source directory. This means that even if sysdeps/mach/hurd/bits/errno.h is up to date, and has an up to date timestamp, the build will fail if the source directory is read-only. Even with a writable source directory, multiple concurrent builds for i686-gnu with the same source directory could race to access the temporary file (which always has the same name). This patch uses the build directory for the temporary file instead to avoid those problems. (In the case where the file is out of date and the temporary file does need to be moved to the source directory, if there are multiple concurrent builds for i686-gnu with the same source directory, and the source and build directories are on different filesystems, it's possible there might still be races replacing the file in the source directory, depending on exactly how mv handles such cross-filesystem moves. This is certainly no worse than the present situation, where such a case would have races regardless of whether the file is out of date or whether different filesystems are in use.) Tested with a build-many-glibcs.py build for i686-gnu. * sysdeps/mach/hurd/Makefile ($(common-objpfx)stamp-errnos): Use $(hurd-objpfx)bits/errno.h-tmp, not $(hurd)/bits/errno.h-tmp.
2018-11-27support: Implement support_quote_stringFlorian Weimer5-0/+102
Reviewed-by: Jonathan Nieder <jrnieder@gmail.com>
2018-11-27CVE-2018-19591: if_nametoindex: Fix descriptor for overlong name [BZ #23927]Florian Weimer3-6/+16
2018-11-27Enable VDSO for static linking on aarch64Rafael Ávila de Espíndola4-10/+15
[BZ #19767] * sysdeps/unix/sysv/linux/aarch64/init-first.c: Remove #ifdef SHARED. * sysdeps/unix/sysv/linux/aarch64/libc-vdso.h: Remove #ifdef SHARED. * sysdeps/unix/sysv/linux/aarch64/sysdep.h (ALWAYS_USE_VSYSCALL): Define.
2018-11-26abilist.awk: Treat .tdata like .tbss and reject unknown combinations.Carlos O'Donell2-9/+10
Mathieu Desnoyers ran into an issue with his rseq patch where he was the first person to add weak thread-local data and this resulted in an ABI list update with entries like this: "GLIBC_2.29 w ? D .tdata 0000000000000020". The weakness of the symbol has nothing to do with the DSOs ABI and so we should not write anything about weak symbols here. The .tdata entries should be treated exactly like .tbss entries and the output should have been: "GLIBC_2.29 __rseq_abi T 0x20" This change makes abilist.awk handle .tdata just like .tbss, while at the same time adding an error case for the default, and the unknown line cases. We never want anyone to be able to add such entries to any ABI list files and should see an immediate error and consult with experts. Tested by Mathieu Desnoyers <mathieu.desnoyers@efficios.com> with the rseq patch set and 'make update-all-abi'. Tested myself with 'make update-all-abi' on x86_64 with no changes. Signed-off-by: Carlos O'Donell <carlos@redhat.com>
2018-11-26Touch more glibc source files in build-many-glibcs.py.Joseph Myers2-0/+19
build-many-glibcs.py currently copies the source tree to avoid issues with parallel builds trying to write into it. This copying can result in occasional spurious build failures from bots, when a "git gc" is in progress that changes .git contents while copying is taking place, and it would also be desirable to avoid the need to copy to save on disk space, I/O and memory used in build-many-glibcs.py builds. In preparation for removing the copying, this patch arranges for build-many-glibcs.py to touch more files on checkout so their timestamps do not result in make attempting to rebuild them. Before actually removing the copying, I intend to do further tests to ensure I haven't missed any other such makefile dependencies. This is of course without prejudice to possibly moving more of these files to being generated in the build directory rather than being checked in at all, where that can be done using build tools already required for the build. For sysdeps files (installed and otherwise) it would be necessary to make sure this does not affect the search ordering, for headers used in the build it would be necessary to ensure they are generated early enough, and for errlist.c there may be dual licensing reasons for keeping it checked in. Tested that a checkout with build-many-glibcs.py does touch the expected files and that a glibcs build for aarch64-linux-gnu succeeds. * scripts/build-many-glibcs.py (Context.fix_glibc_timestamps): Touch additional files.
2018-11-26malloc: tcache: Validate tc_idx before checking for double-frees [BZ #23907]Florian Weimer2-25/+31
The previous check could read beyond the end of the tcache entry array. If the e->key == tcache cookie check happened to pass, this would result in crashes.
2018-11-26Enable VDSO on powerpc statically linked programs (bug 19767)Rafael Ávila de Espíndola5-9/+21
[BZ #19767] * sysdeps/unix/sysv/linux/powerpc/init-first.c: Remove #ifdef SHARED. * sysdeps/unix/sysv/linux/powerpc/libc-vdso.h: Remove #ifdef SHARED. Include sysdep.h. * sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep.h: Define ALWAYS_USE_VSYSCALL. * sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep.h: Define ALWAYS_USE_VSYSCALL. Reviewed-by: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>
2018-11-23Enable VDSO on x86_64 statically linked programs [BZ #19767]Rafael Ávila de Espíndola10-12/+47
All the required code already existed, and some of it was already running. AT_SYSINFO_EHDR is processed if NEED_DL_SYSINFO_DSO is defined, but it looks like it always is. The call to setup_vdso is also unconditional, so all that was left to do was setup the function pointers and use them. This patch just deletes some #ifdef to enable that. [BZ #19767] * nptl/Makefile (tests-static): Add tst-cond11-static. (tests): Likewise. * nptl/tst-cond11-static.c: New File. * sysdeps/unix/sysv/linux/Makefile (tests-static): Add tst-affinity-static. (tests): Likewise. * sysdeps/unix/sysv/linux/sysdep-vdso.h: Check USE_VSYSCALL instead of SHARED. * sysdeps/unix/sysv/linux/sysdep.h (ALWAYS_USE_VSYSCALL): New. (USE_VSYSCALL): Likewise. * sysdeps/unix/sysv/linux/tst-affinity-static.c: New file. * sysdeps/unix/sysv/linux/x86/libc-vdso.h: Check USE_VSYSCALL instead of SHARED. * sysdeps/unix/sysv/linux/x86_64/init-first.c: Don't check SHARED. * sysdeps/unix/sysv/linux/x86_64/sysdep.h (ALWAYS_USE_VSYSCALL): New.
2018-11-23Fix Arm __ASSUME_COPY_FILE_RANGE (bug 23915).Joseph Myers2-3/+11
The generic kernel-features.h defines __ASSUME_COPY_FILE_RANGE for 4.5 and later kernels. However, for 32-bit Arm binaries running on 64-bit Arm kernels, the syscall was only wired up in the 4.7 kernel, although the 32-bit Arm kernel had the syscall from 4.5 onwards. This patch corrects the Arm kernel-features.h to undefine the macro for configured minimum kernel versions before 4.7. Tested (compilation only) with a build-many-glibcs.py build for arm-linux-gnueabi. [BZ #23915] * sysdeps/unix/sysv/linux/arm/kernel-features.h [__LINUX_KERNEL_VERSION < 0x040700] (__ASSUME_COPY_FILE_RANGE): Undefine.
2018-11-23x86/CET: Add a re-exec test with legacy bitmapH.J. Lu3-2/+93
Add a re-exec test with legacy bitmap to verify that legacy bitmap is properly hanlded by kernel. * sysdeps/x86/Makefile (tests): Add tst-cet-legacy-1a. (tst-cet-legacy-1a-ARGS): New. ($(objpfx)tst-cet-legacy-1a): New target. * sysdeps/x86/tst-cet-legacy-1a.c: New file.
2018-11-22Combine more conformtest tests into single execution of the compiler.Joseph Myers2-1/+29
In <https://sourceware.org/ml/libc-alpha/2018-11/msg00225.html>, Florian reported that the change from conformtest.pl to conformtest.py had increased conform/ test time, possibly because of increased startup overhead for Python scripts. This patch improves conformtest.py performance by arranging for as many tests of a (header, standard) pair as possible to use a single execution of the compiler, so it does not need to initialize and parse the whole header under test separately for every test assertion. Specifically, compilation tests that are not marked as "optional" or "xfail" are combined into a single source file, and are only then run separately if compilation of that combined file fails. For me, this reduces the wall clock time for the conformtest.py tests (not the whole of the conform/ directory) from two minutes to 15 seconds. Tested for x86_64, and with build-many-glibcs.py. * conform/conformtest.py (CompileSubTest.__init__): Set self.run_early to False. (ExecuteSubTest.__init__): Likewise. (HeaderTests.run): Try running all non-optional, non-XFAILed compilation tests in a single execution of the compiler.
2018-11-22Separate conformtest subtest generation and execution.Joseph Myers2-65/+122
This patch continues moving conformtest towards running more tests in a single compiler execution by separating the generation and execution of the subtests of each test. Instead of test classes having a run method that both generates the text of the programs to be compiled or executed, and compiles or executes them, they are changed to having a gen_subtests method that just generates CompileSubTest and ExecuteSubTest objects to store the subtest names and text, and then a separate loop in HeaderTests.run deals with actually executing those subtests. This will allow for future changes to extract the text for all non-optional, non-xfail compilation subtests to try compiling those all at once, with separate compilations only if that fails, so massively reducing the number of separate compiler executions (each of which needs to parse the entire contents of the header under test, in addition to the startup cost that applies even for compiling an empty file). Tested for x86_64, and with build-many-glibcs.py. * conform/conformtest.py (CompileSubTest): New class. (ExecuteSubTest): Likewise. (ElementTest.run): Rename to gen_subtests. Append tests to self.subtests instead of running them. (ConstantTest.run): Likewise. (SymbolTest.run): Likewise. (TypeTest.run): Likewise. (TagTest.run): Likewise. (FunctionTest.run): Likewise. (VariableTest.run): Likewise. (MacroFunctionTest.run): Likewise. (MacroStrTest.run): Likewise. (HeaderTests.handle_test_line): Generate subtests for tests. (HeaderTests.run): Run subtests for tests.
2018-11-21Remove the error handling wrapper from powSzabolcs Nagy37-15/+125
Introduce new pow symbol version that doesn't do SVID compatible error handling. The standard errno and fp exception based error handling is inline in the new code and does not have significant overhead. The wrapper is disabled for sysdeps/ieee754/dbl-64 by using empty w_pow.c and enabled for targets with their own pow implementation or ifunc dispatch on __ieee754_pow by including math/w_pow.c. The compatibility symbol version still uses the wrapper with SVID error handling around the new code. There is no new symbol version nor compatibility code on !LIBM_SVID_COMPAT targets (e.g. riscv). On targets where previously powl was an alias of pow, now it points to the compatibility symbol with the wrapper, because it still need the SVID compatible error handling. This affects NO_LONG_DOUBLE (e.g. arm) and LONG_DOUBLE_COMPAT (e.g. alpha) targets as well. The __pow_finite symbol is now an alias of pow. Both __pow_finite and pow set errno and thus not const functions. The ia64 asm is changed so the compat and new symbol versions map to the same address. On x86_64 #include <math.h> was added before macro definitions that may affect that header. Tested with build-many-glibcs.py. * math/Versions (GLIBC_2.29): Add pow. * math/w_pow_compat.c (__pow_compat): Change to versioned compat symbol. * math/w_pow.c: New file. * sysdeps/i386/fpu/w_pow.c: New file. * sysdeps/ia64/fpu/e_pow.S: Add versioned symbols. * sysdeps/ieee754/dbl-64/e_pow.c (__ieee754_pow): Rename to __pow and add necessary aliases. * sysdeps/ieee754/dbl-64/w_pow.c: New file. * sysdeps/m68k/m680x0/fpu/w_pow.c: New file. * sysdeps/mach/hurd/i386/libm.abilist: Update. * sysdeps/unix/sysv/linux/aarch64/libm.abilist: Update. * sysdeps/unix/sysv/linux/alpha/libm.abilist: Update. * sysdeps/unix/sysv/linux/arm/libm.abilist: Update. * sysdeps/unix/sysv/linux/hppa/libm.abilist: Update. * sysdeps/unix/sysv/linux/i386/libm.abilist: Update. * sysdeps/unix/sysv/linux/ia64/libm.abilist: Update. * sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Update. * sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Update. * sysdeps/unix/sysv/linux/microblaze/libm.abilist: Update. * sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Update. * sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Update. * sysdeps/unix/sysv/linux/nios2/libm.abilist: Update. * sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist: Update. * sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist: Update. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist: Update. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist: Update. * sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Update. * sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Update. * sysdeps/unix/sysv/linux/sh/libm.abilist: Update. * sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Update. * sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Update. * sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Update. * sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Update. * sysdeps/x86_64/fpu/multiarch/e_pow-fma.c (__ieee754_pow): Rename to __pow. * sysdeps/x86_64/fpu/multiarch/e_pow-fma4.c (__ieee754_pow): Likewise. * sysdeps/x86_64/fpu/multiarch/e_pow.c (__ieee754_pow): Likewise. * sysdeps/x86_64/fpu/multiarch/w_pow.c: New file.
2018-11-21Remove the error handling wrapper from log2Szabolcs Nagy33-10/+112
Introduce new log2 symbol version that doesn't do SVID compatible error handling. The standard errno and fp exception based error handling is inline in the new code and does not have significant overhead. The wrapper is disabled for sysdeps/ieee754/dbl-64 by using empty w_log2.c and enabled for targets with their own log2 implementation by including math/w_log2.c. The compatibility symbol version still uses the wrapper with SVID error handling around the new code. There is no new symbol version nor compatibility code on !LIBM_SVID_COMPAT targets (e.g. riscv). On targets where previously log2l was an alias of log2, now it points to the compatibility symbol with the wrapper, because it still need the SVID compatible error handling. This affects NO_LONG_DOUBLE (e.g. arm) and LONG_DOUBLE_COMPAT (e.g. alpha) targets as well. The __log2_finite symbol is now an alias of log2. Both __log2_finite and log2 set errno and thus not const functions. The ia64 asm is changed so the compat and new symbol versions map to the same address. Tested with build-many-glibcs.py. * math/Versions (GLIBC_2.29): Add log2. * math/w_log2_compat.c (__log2_compat): Change to versioned compat symbol. * math/w_log2.c: New file. * sysdeps/i386/fpu/w_log2.c: New file. * sysdeps/ia64/fpu/e_log2.S: Add versioned symbols. * sysdeps/ieee754/dbl-64/e_log2.c (__ieee754_log2): Rename to __log2 and add necessary aliases. * sysdeps/ieee754/dbl-64/w_log2.c: New file. * sysdeps/m68k/m680x0/fpu/w_log2.c: New file. * sysdeps/mach/hurd/i386/libm.abilist: Update. * sysdeps/unix/sysv/linux/aarch64/libm.abilist: Update. * sysdeps/unix/sysv/linux/alpha/libm.abilist: Update. * sysdeps/unix/sysv/linux/arm/libm.abilist: Update. * sysdeps/unix/sysv/linux/hppa/libm.abilist: Update. * sysdeps/unix/sysv/linux/i386/libm.abilist: Update. * sysdeps/unix/sysv/linux/ia64/libm.abilist: Update. * sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Update. * sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Update. * sysdeps/unix/sysv/linux/microblaze/libm.abilist: Update. * sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Update. * sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Update. * sysdeps/unix/sysv/linux/nios2/libm.abilist: Update. * sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist: Update. * sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist: Update. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist: Update. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist: Update. * sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Update. * sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Update. * sysdeps/unix/sysv/linux/sh/libm.abilist: Update. * sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Update. * sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Update. * sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Update. * sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Update.
2018-11-21Remove the error handling wrapper from logSzabolcs Nagy38-11/+125
Introduce new log symbol version that doesn't do SVID compatible error handling. The standard errno and fp exception based error handling is inline in the new code and does not have significant overhead. The wrapper is disabled for sysdeps/ieee754/dbl-64 by using empty w_log.c and enabled for targets with their own log implementation by including math/w_log.c. The compatibility symbol version still uses the wrapper with SVID error handling around the new code. There is no new symbol version nor compatibility code on !LIBM_SVID_COMPAT targets (e.g. riscv). On targets where previously logl was an alias of log, now it points to the compatibility symbol with the wrapper, because it still need the SVID compatible error handling. This affects NO_LONG_DOUBLE (e.g. arm) and LONG_DOUBLE_COMPAT (e.g. alpha) targets as well. The __log_finite symbol is now an alias of log. Both __log_finite and log set errno and thus not const functions. The ia64 asm is changed so the compat and new symbol versions map to the same address. On x86_64 #include <math.h> was added before macro definitions that may affect that header. Tested with build-many-glibcs.py. * math/Versions (GLIBC_2.29): Add log. * math/w_log_compat.c (__log_compat): Change to versioned compat symbol. * math/w_log.c: New file. * sysdeps/i386/fpu/w_log.c: New file. * sysdeps/ia64/fpu/e_log.S: Update. * sysdeps/ieee754/dbl-64/e_log.c (__ieee754_log): Rename to __log and add necessary aliases. * sysdeps/ieee754/dbl-64/w_log.c: New file. * sysdeps/m68k/m680x0/fpu/w_log.c: New file. * sysdeps/mach/hurd/i386/libm.abilist: Update. * sysdeps/unix/sysv/linux/aarch64/libm.abilist: Update. * sysdeps/unix/sysv/linux/alpha/libm.abilist: Update. * sysdeps/unix/sysv/linux/arm/libm.abilist: Update. * sysdeps/unix/sysv/linux/hppa/libm.abilist: Update. * sysdeps/unix/sysv/linux/i386/libm.abilist: Update. * sysdeps/unix/sysv/linux/ia64/libm.abilist: Update. * sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Update. * sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Update. * sysdeps/unix/sysv/linux/microblaze/libm.abilist: Update. * sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Update. * sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Update. * sysdeps/unix/sysv/linux/nios2/libm.abilist: Update. * sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist: Update. * sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist: Update. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist: Update. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist: Update. * sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Update. * sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Update. * sysdeps/unix/sysv/linux/sh/libm.abilist: Update. * sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Update. * sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Update. * sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Update. * sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Update. * sysdeps/x86_64/fpu/multiarch/e_log-avx.c (__ieee754_log): Rename to __log. * sysdeps/x86_64/fpu/multiarch/e_log-fma.c (__ieee754_log): Likewise. * sysdeps/x86_64/fpu/multiarch/e_log-fma4.c (__ieee754_log): Likewise. * sysdeps/x86_64/fpu/multiarch/e_log.c (__ieee754_log): Likewise. * sysdeps/x86_64/fpu/multiarch/w_log.c: New file.
2018-11-21Remove the error handling wrapper from exp and exp2Szabolcs Nagy45-23/+214
Introduce new exp and exp2 symbol version that don't do SVID compatible error handling. The standard errno and fp exception based error handling is inline in the new code and does not have significant overhead. The double precision wrappers are disabled for sysdeps/ieee754/dbl-64 by using empty w_exp.c and w_exp2.c files, the math/w_exp.c and math/w_exp2.c files use the wrapper template and can be included by targets that have their own exp and exp2 implementations or use ifunc on the glibc internal __ieee754_exp symbol. The compatibility symbol versions still use the wrapper with SVID error handling around the new code. There is no new symbol version nor compatibility code on !LIBM_SVID_COMPAT targets (e.g. riscv). On targets where previously expl and exp2l were aliases of exp and exp2, now they point to the compatibility symbols with the wrapper, because they still need the SVID compatible error handling. This affects NO_LONG_DOUBLE (e.g arm) and LONG_DOUBLE_COMPAT (e.g. alpha) targets as well. The _finite symbols are now aliases of the standard symbols (they have no performance advantage anymore). Both the standard symbols and _finite symbols set errno and thus not const functions. The ia64 asm is changed so the compat and new symbol versions map to the same address. On x86_64 #include <math.h> was added before macro definitions that may affect that header (the new macro name is __exp instead of __ieee754_exp which breaks some math.h macros). Tested with build-many-glibcs.py. * math/Versions (GLIBC_2.29): Add exp and exp2. * math/w_exp2_compat.c (__exp2_compat): Change to versioned compat symbol, handle NO_LONG_DOUBLE and LONG_DOUBLE_COMPAT explicitly. * math/w_exp_compat.c (__exp_compat): Likewise. * math/w_exp.c: New file. * math/w_exp2.c: New file. * sysdeps/i386/fpu/w_exp.c: New file. * sysdeps/i386/fpu/w_exp2.c: New file. * sysdeps/ia64/fpu/e_exp.S: Add versioned symbols. * sysdeps/ia64/fpu/e_exp2.S: Likewise. * sysdeps/ieee754/dbl-64/e_exp.c (__ieee754_exp): Rename to __exp and add necessary aliases. * sysdeps/ieee754/dbl-64/e_exp2.c (__ieee754_exp2): Rename to __exp2 and add necessary aliases. * sysdeps/ieee754/dbl-64/w_exp.c: New file. * sysdeps/ieee754/dbl-64/w_exp2.c: New file. * sysdeps/m68k/m680x0/fpu/w_exp.c: New file. * sysdeps/m68k/m680x0/fpu/w_exp2.c: New file. * sysdeps/mach/hurd/i386/libm.abilist: Update. * sysdeps/unix/sysv/linux/aarch64/libm.abilist: Update. * sysdeps/unix/sysv/linux/alpha/libm.abilist: Update. * sysdeps/unix/sysv/linux/arm/libm.abilist: Update. * sysdeps/unix/sysv/linux/hppa/libm.abilist: Update. * sysdeps/unix/sysv/linux/i386/libm.abilist: Update. * sysdeps/unix/sysv/linux/ia64/libm.abilist: Update. * sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Update. * sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Update. * sysdeps/unix/sysv/linux/microblaze/libm.abilist: Update. * sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Update. * sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Update. * sysdeps/unix/sysv/linux/nios2/libm.abilist: Update. * sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist: Update. * sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist: Update. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist: Update. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist: Update. * sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Update. * sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Update. * sysdeps/unix/sysv/linux/sh/libm.abilist: Update. * sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Update. * sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Update. * sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Update. * sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Update. * sysdeps/x86_64/fpu/multiarch/e_exp-avx.c (__exp1): Remove. (__ieee754_exp): Rename to __exp. * sysdeps/x86_64/fpu/multiarch/e_exp-fma.c (__exp1): Remove. (__ieee754_exp): Rename to __exp. * sysdeps/x86_64/fpu/multiarch/e_exp-fma4.c (__exp1): Remove. (__ieee754_exp): Rename to __exp. * sysdeps/x86_64/fpu/multiarch/e_exp.c (__ieee754_exp): Rename to __exp. * sysdeps/x86_64/fpu/multiarch/w_exp.c: New file.
2018-11-20malloc: tcache double free checkDJ Delorie7-1/+148
* malloc/malloc.c (tcache_entry): Add key field. (tcache_put): Set it. (tcache_get): Likewise. (_int_free): Check for double free in tcache. * malloc/tst-tcfree1.c: New. * malloc/tst-tcfree2.c: New. * malloc/Makefile: Run the new tests. * manual/probes.texi: Document memory_tcache_double_free probe. * dlfcn/dlerror.c (check_free): Prevent double frees.
2018-11-20[AArch64] Adjust writeback in non-zero memsetWilco Dijkstra2-3/+8
This fixes an ineffiency in the non-zero memset. Delaying the writeback until the end of the loop is slightly faster on some cores - this shows ~5% performance gain on Cortex-A53 when doing large non-zero memsets. * sysdeps/aarch64/memset.S (MEMSET): Improve non-zero memset loop.
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