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* Fix modf (sNaN) (bug 20240).Joseph Myers2016-06-101-0/+8
| | | | | | | | | | | | | | | | | | | | | Various modf implementations return sNaN (both outputs) for sNaN input. In fact they contain code to convert sNaN to qNaN for both outputs, but the way this is done is multiplying by 1.0 (for a wider range of inputs that includes NaNs as well as numbers with exponent large enough to ensure that they are integers), and that multiplication by 1.0 is optimized away by GCC in the absence of -fsignaling-nans, unlike other operations on NaNs used for this purpose that are not no-ops for non-sNaN input. This patch arranges for those files to be built with -fsignaling-nans so that this existing code is effective as intended. Tested for x86_64 and x86. [BZ #20240] * math/Makefile (CFLAGS-s_modf.c): New variable. (CFLAGS-s_modff.c): Likewise. (CFLAGS-s_modfl.c): Likewise. * math/libm-test.inc (modf_test_data): Add sNaN tests.
* Bug 20215: Always undefine __always_inline before defining it.Carlos O'Donell2016-06-101-0/+6
| | | | | | The Linux kernel defines __always_inline in stddef.h (283d7573), and it conflicts with the definition in misc/sys/cdefs.h. To fix this we undefine it first and always use the glibc definition.
* Revert {send,sendm,recv,recvm}msg conformance changesAdhemerval Zanella2016-06-101-0/+102
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | After some discussion in libc-alpha about this POSIX compliance fix, I see that GLIBC should indeed revert back to previous definition of msghdr and cmsghdr and implementation of sendmsg, recvmsg, sendmmsg, recvmmsg due some reasons: * The possible issue where the syscalls wrapper add the compatibility layer is quite limited in scope and range. And kernel current also add some limits to the values on the internal msghdr and cmsghdr fields: - msghdr::msg_iovlen larger than UIO_MAXIOV (1024) returns EMSGSIZE. - msghdr::msg_controllen larger than INT_MAX returns ENOBUFS. * There is a small performance hit for recvmsg/sendmsg/recmmsg which is neglectable, but it is a big hit for sendmmsg since now instead of calling the syscall for the packed structure, GLIBC is calling multiple sendmsg. This defeat the very existence of the syscall. * It currently breaks libsanitizer build on GCC [1] (I fixed on compiler-rt). However the fix is incomplete because it does add any runtime check since libsanitizer currently does not have any facility to intercept symbols with multiple version [2]. This, along with incorret dlsym/dlvsym return for versioned symbol due another bug [3], makes hard to interpose versioned symbols. Also, current approach of fixing GCC PR#71445 leads to half-baked solutions without versioned symbol interposing. This patch basically reverts commits 2f0dc39029ae08, 222c2d7f4357d66, af7f7c7ec8dea1. I decided to not revert abf29edd4a3918 (Adjust kernel-features.h defaults for recvmsg and sendmsg) mainly because it does not really address the POSIX compliance original issue and also adds some cleanups. Tested on x86, i386, s390, s390x, aarch64, and powerpc64le. [1] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71445 [2] https://github.com/google/sanitizers/issues/628 [3] https://sourceware.org/bugzilla/show_bug.cgi?id=14932 * conform/data/sys/socket.h-data (msghdr.msg_iovlen): Add xfail-. (msghdr.msg_controllen): Likewise. (cmsghdr.cmsg_len): Likewise. * nptl/Makefile (libpthread-routines): Remove ptw-oldrecvmsg and ptw-oldsendmsg. (CFLAGS-oldrecvmsg.c): Remove rule. (CFLAGS-oldsendmsg.c): Likewise. (CFLAGS-recvmsg.c): Add rule. (CFLAGS-sendmsg.c): Likewise. * sysdeps/unix/sysv/linux/Makefile (sysdep_routines): Remove oldrecvmsg, oldsendmsg, oldrecvmmsg, oldsendmmsg. (CFLAGS-recvmsg.c): Remove rule. (CFLAGS-sendmsg.c): Likewise. (CFLAGS-oldrecvmsg.c): Likewise. (CFLAGS-oldsendmsg.c): Likewise. (CFLAGS-recvmmsg.c): Likewise. * sysdeps/unix/sysv/linux/bits/socket.h (msghdr.msg_iovlen): Revert to kernel defined interfaces. (msghdr.msg_controllen): Likewise. (cmsghdr.cmsg_len): Likewise. (msghdr.__glibc_reserved1): Remove member. (msghdr.__glibc_reserved2): Likewise. (cmsghdr.__glibc_reserved1): Likewise. * sysdeps/unix/sysv/linux/oldrecvmmsg.c: Remove file. * sysdeps/unix/sysv/linux/oldrecvmsg.c: Likewise. * sysdeps/unix/sysv/linux/oldsendmmsg.c: Likewise. * sysdeps/unix/sysv/linux/oldsendmsg.c: Likewise. * sysdeps/unix/sysv/linux/recvmmsg.c: Revert back to previous version. * sysdeps/unix/sysv/linux/recvmsg.c: Likewise. * sysdeps/unix/sysv/linux/sendmmsg.c: Likewise. * sysdeps/unix/sysv/linux/sendmsg.c: Likewise. * sysdeps/unix/sysv/linux/aarch64/Versions [libc] (GLIBC_2.24): Remove recvmsg and sendmsg. * sysdeps/unix/sysv/linux/alpha/Versions [libc] (GLIBC_2.24): Likewise. * sysdeps/unix/sysv/linux/hppa/Versions [libc] (GLIBC_2.24): Likewise. * sysdeps/unix/sysv/linux/i386/Versions [libc] (GLIBC_2.24): Likewise. * sysdeps/unix/sysv/linux/m68k/Versions [libc] (GLIBC_2.24): Likewise. * sysdeps/unix/sysv/linux/microblaze/Versions [libc] (GLIBC_2.24): Likewise. * sysdeps/unix/sysv/linux/mips/mips32/Versions [libc] (GLIBC_2.24): Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n32/Versions [libc] (GLIBC_2.24): Likewise. * sysdeps/unix/sysv/linux/nios2/Versions [libc] (GLIBC_2.24): Likewise. * sysdeps/unix/sysv/linux/powerpc/Versions [libc] (GLIBC_2.24): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/Versions [libc] (GLIBC_2.24): Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/Versions [libc] (GLIBC_2.24): Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/Versions [libc] (GLIBC_2.24): Likewise. * sysdeps/unix/sysv/linux/sh/Versions [libc] (GLIBC_2.24): Likewise. * sysdeps/unix/sysv/linux/sparc/Versions [libc] (GLIBC_2.24): Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/Versions [libc] (GLIBC_2.24): Likewise. * sysdeps/unix/sysv/linux/tile/Versions [libc] (GLIBC_2.24): Likewise. * sysdeps/unix/sysv/linux/x86_64/Versions [libc] (GLIBC_2.24): Likewise. * sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/Versions: Remove file * sysdeps/unix/sysv/linux/x86_64/64/Versions: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n64/Versions: Likewise. * sysdeps/unix/sysv/linux/aarch64/libc.abilist: Remove new 2.24 version for {recv,send,recm,sendm}msg. * sysdeps/unix/sysv/linux/alpha/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/arm/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/hppa/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/i386/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/ia64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/microblaze/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/nios2/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/sh/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist: Likewise.
* malloc: Remove __malloc_initialize_hook from the API [BZ #19564]Florian Weimer2016-06-101-0/+20
| | | | | | | __malloc_initialize_hook is interposed by application code, so the usual approach to define a compatibility symbol does not work. This commit adds a new mechanism based on #pragma GCC poison in <stdc-predef.h>.
* Fix i386/x86_64 log2l (sNaN) (bug 20235).Joseph Myers2016-06-091-0/+6
| | | | | | | | | | | | | | The i386/x86_64 versions of log2l return sNaN for sNaN input. This patch fixes them to add NaN inputs to themselves so that qNaN is returned in this case. Tested for x86_64 and x86. [BZ #20235] * sysdeps/i386/fpu/e_log2l.S (__ieee754_log2l): Add NaN input to itself. * sysdeps/x86_64/fpu/e_log2l.S (__ieee754_log2l): Likewise. * math/libm-test.inc (log2_test_data): Add sNaN tests.
* Fix ldbl-128ibm log1pl (sNaN) (bug 20234).Joseph Myers2016-06-091-0/+4
| | | | | | | | | | | | The ldbl-128ibm version of log1pl returns sNaN for sNaN input. This patch fixes it to add such inputs to themselves so that qNaN is returned in this case. Tested for powerpc. [BZ #20234] * sysdeps/ieee754/ldbl-128ibm/s_log1pl.c (__log1pl): Add positive infinity or NaN input to itself.
* Fix ldbl-128ibm expm1l (sNaN) (bug 20233).Joseph Myers2016-06-091-0/+4
| | | | | | | | | | | | The ldbl-128ibm version of expm1l returns sNaN for sNaN input. This patch fixes it to add such inputs to themselves so that qNaN is returned in this case. Tested for powerpc. [BZ #20233] * sysdeps/ieee754/ldbl-128ibm/s_expm1l.c (__expm1l): Add NaN input to itself.
* Fix ldbl-128 expm1l (sNaN) (bug 20232).Joseph Myers2016-06-091-0/+6
| | | | | | | | | | | | The ldbl-128 version of expm1l returns sNaN for sNaN input. This patch fixes it to add such inputs to themselves so that qNaN is returned in this case. Tested for mips64. [BZ #20232] * sysdeps/ieee754/ldbl-128/s_expm1l.c (__expm1l): Add NaN input to itself.
* Always indirect branch to __libc_start_main via GOTH.J. Lu2016-06-091-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | Since __libc_start_main in libc.so is called very early, lazy binding isn't relevant. Always call __libc_start_main with indirect branch via GOT to avoid extra branch to PLT slot. In case of static executable, ld in binutils 2.26 or above can convert indirect branch into direct branch: 0000000000400a80 <_start>: 400a80: 31 ed xor %ebp,%ebp 400a82: 49 89 d1 mov %rdx,%r9 400a85: 5e pop %rsi 400a86: 48 89 e2 mov %rsp,%rdx 400a89: 48 83 e4 f0 and $0xfffffffffffffff0,%rsp 400a8d: 50 push %rax 400a8e: 54 push %rsp 400a8f: 49 c7 c0 20 1b 40 00 mov $0x401b20,%r8 400a96: 48 c7 c1 90 1a 40 00 mov $0x401a90,%rcx 400a9d: 48 c7 c7 c0 03 40 00 mov $0x4003c0,%rdi 400aa4: 67 e8 96 09 00 00 addr32 callq 401440 <__libc_start_main> 400aaa: f4 hlt * sysdeps/x86_64/start.S (_start): Always indirect branch to __libc_start_main via GOT.
* X86-64: Add dummy memcopy.h and wordcopy.cH.J. Lu2016-06-091-0/+5
| | | | | | | | | Since x86-64 no longer uses memory copy functions, add dummy memcopy.h and wordcopy.c to reduce code size. It reduces the size of libc.so by about 1 KB. * sysdeps/x86_64/memcopy.h: New file. * sysdeps/x86_64/wordcopy.c: Likewise.
* quick_exit tests: Do not use C++ headersFlorian Weimer2016-06-091-0/+15
| | | | | | | | | | | | If C++ headers such as <cstdlib> or <thread> are used, GCC 6 will include /usr/include/stdlib.h (instead of stdlib/stdlib.h in the glibc source directory), and this turns up as a make dependency. An implicit rule will kick in and make will try to install stdlib/stdlib.h as /usr/include/stdlib.h because the target is out of date. This commit switches to <stdlib.h> and <pthread.h> instead of <cstdlib> and <thread>.
* Fix nscd assertion failure in gc (bug 19755)Andreas Schwab2016-06-091-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | If a GETxxBYyy request (for passwd or group) is running in parallel to an INVALIDATE request (for the same database) then in a particular order of events the garbage collector is not properly marking all used memory and fails an assertion: GETGRBYNAME (root) Haven't found "root" in group cache! add new entry "root" of type GETGRBYNAME for group to cache (first) handle_request: request received (Version = 2) from PID 7413 INVALIDATE (group) pruning group cache; time 9223372036854775807 considering GETGRBYNAME entry "root", timeout 1456763027 add new entry "0" of type GETGRBYGID for group to cache remove GETGRBYNAME entry "root" nscd: mem.c:403: gc: Assertion `next_data == &he_data[db->head->nentries]' failed. Here the first call to cache_add added the GETGRBYNAME entry, which is immediately marked for collection by prune_cache. Then the GETGRBYGID entry is added which shares the data packet with the first entry and therefore is marked as !first, while the marking look in prune_cache has already finished. When the garbage collector runs, it only considers references by entries marked as first, missing the reference by the secondary entry. The only way to fix that is to prevent prune_cache from running while the two related entries are added.
* 2016-06-09 Paul Pluzhnikov <ppluzhnikov@gmail.com>Paul Pluzhnikov2016-06-081-0/+6
| | | | | | * test-skeleton.c (oom_error, xmalloc, xcalloc, xrealloc): New functions. (add_temp_file): Use them.
* mach: Add mach_print sycsall declarationSamuel Thibault2016-06-091-0/+4
| | | | * mach/mach/mach_traps.h (mach_print): Add syscall declaration.
* Fix i386/x86_64 log1pl (sNaN) (bug 20229).Joseph Myers2016-06-081-0/+5
| | | | | | | | | | | | | The i386/x86_64 versions of log1pl return sNaN for sNaN input. This patch fixes them to add a NaN input to itself so that qNaN is returned in this case. Tested for x86_64 and x86. [BZ #20229] * sysdeps/i386/fpu/s_log1pl.S (__log1pl): Add NaN input to itself. * sysdeps/x86_64/fpu/s_log1pl.S (__log1pl): Likewise. * math/libm-test.inc (log1p_test_data): Add sNaN tests.
* Fix i386/x86_64 log10l (sNaN) (bug 20228).Joseph Myers2016-06-081-0/+6
| | | | | | | | | | | | | | The i386/x86_64 versions of log10l return sNaN for sNaN input. This patch fixes them to add a NaN input to itself so that qNaN is returned in this case. Tested for x86_64 and x86. [BZ #20228] * sysdeps/i386/fpu/e_log10l.S (__ieee754_log10l): Add NaN input to itself. * sysdeps/x86_64/fpu/e_log10l.S (__ieee754_log10l): Likewise. * math/libm-test.inc (log10_test_data): Add sNaN tests.
* Fix i386/x86_64 logl (sNaN) (bug 20227).Joseph Myers2016-06-081-0/+7
| | | | | | | | | | | | | | | | The i386/x86_64 versions of logl return sNaN for sNaN input. This patch fixes them to add a NaN input to itself so that qNaN is returned in this case. Tested for x86_64 and x86 (including a build for i586 to cover the non-i686 logl version). [BZ #20227] * sysdeps/i386/fpu/e_logl.S (__ieee754_logl): Add NaN input to itself. * sysdeps/i386/i686/fpu/e_logl.S (__ieee754_logl): Likewise. * sysdeps/x86_64/fpu/e_logl.S (__ieee754_logl): Likewise. * math/libm-test.inc (log_test_data): Add sNaN tests.
* Fix i386/x86_64 expl, exp10l, expm1l for sNaN input (bug 20226).Joseph Myers2016-06-081-0/+8
| | | | | | | | | | | | | | | | | The i386 and x86_64 implementations of expl, exp10l and expm1l (code shared between the functions) return sNaN for sNaN input. This patch fixes them to add NaN inputs to themselves so that qNaN is returned in this case. Tested for x86_64 and x86. [BZ #20226] * sysdeps/i386/fpu/e_expl.S (IEEE754_EXPL): Add NaN argument to itself. * sysdeps/x86_64/fpu/e_expl.S (IEEE754_EXPL): Likewise. * math/libm-test.inc (exp_test_data): Add sNaN tests. (exp10_test_data): Likewise. (expm1_test_data): Likewise.
* Fix ldexp, scalbn, scalbln for sNaN input (bug 20225).Joseph Myers2016-06-081-0/+11
| | | | | | | | | | | | | | | | | | | | The wrapper implementations of ldexp / scalbn / scalbln (architecture-independent), and their float / long double variants, return sNaN for sNaN input. This patch fixes them to add relevant arguments to themselves so that qNaN is returned in this case. Tested for x86_64 and x86. [BZ #20225] * math/s_ldexp.c (__ldexp): Add non-finite or zero argument to itself. * math/s_ldexpf.c (__ldexpf): Likewise. * math/s_ldexpl.c (__ldexpl): Likewise. * math/w_scalbln.c (__w_scalbln): Likewise. * math/w_scalblnf.c (__w_scalblnf): Likewise. * math/w_scalblnl.c (__w_scalblnl): Likewise. * math/libm-test.inc (scalbn_test_data): Add sNaN tests. (scalbln_test_data): Likewise.
* Fix i386 cbrtl (sNaN) (bug 20224).Joseph Myers2016-06-081-0/+7
| | | | | | | | | | | | | | | The i386 version of cbrtl returns sNaN (without raising any exceptions) for sNaN input. This patch fixes it to add non-finite arguments to themselves (the code path in question is also reached for zero arguments, for which adding them to themselves is also harmless), so that "invalid" is raised and qNaN returned. Tested for x86_64 and x86. [BZ #20224] * sysdeps/i386/fpu/s_cbrtl.S (__cbrtl): Add non-finite or zero argument to itself. * math/libm-test.inc (cbrt_test_data): Add sNaN tests.
* X86-64: Remove previous default/SSE2/AVX2 memcpy/memmoveH.J. Lu2016-06-081-0/+80
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since the new SSE2/AVX2 memcpy/memmove are faster than the previous ones, we can remove the previous SSE2/AVX2 memcpy/memmove and replace them with the new ones. No change in IFUNC selection if SSE2 and AVX2 memcpy/memmove weren't used before. If SSE2 or AVX2 memcpy/memmove were used, the new SSE2 or AVX2 memcpy/memmove optimized with Enhanced REP MOVSB will be used for processors with ERMS. The new AVX512 memcpy/memmove will be used for processors with AVX512 which prefer vzeroupper. Since the new SSE2 memcpy/memmove are faster than the previous default memcpy/memmove used in libc.a and ld.so, we also remove the previous default memcpy/memmove and make them the default memcpy/memmove, except that non-temporal store isn't used in ld.so. Together, it reduces the size of libc.so by about 6 KB and the size of ld.so by about 2 KB. [BZ #19776] * sysdeps/x86_64/memcpy.S: Make it dummy. * sysdeps/x86_64/mempcpy.S: Likewise. * sysdeps/x86_64/memmove.S: New file. * sysdeps/x86_64/memmove_chk.S: Likewise. * sysdeps/x86_64/multiarch/memmove.S: Likewise. * sysdeps/x86_64/multiarch/memmove_chk.S: Likewise. * sysdeps/x86_64/memmove.c: Removed. * sysdeps/x86_64/multiarch/memcpy-avx-unaligned.S: Likewise. * sysdeps/x86_64/multiarch/memcpy-sse2-unaligned.S: Likewise. * sysdeps/x86_64/multiarch/memmove-avx-unaligned.S: Likewise. * sysdeps/x86_64/multiarch/memmove-sse2-unaligned-erms.S: Likewise. * sysdeps/x86_64/multiarch/memmove.c: Likewise. * sysdeps/x86_64/multiarch/memmove_chk.c: Likewise. * sysdeps/x86_64/multiarch/Makefile (sysdep_routines): Remove memcpy-sse2-unaligned, memmove-avx-unaligned, memcpy-avx-unaligned and memmove-sse2-unaligned-erms. * sysdeps/x86_64/multiarch/ifunc-impl-list.c (__libc_ifunc_impl_list): Replace __memmove_chk_avx512_unaligned_2 with __memmove_chk_avx512_unaligned. Remove __memmove_chk_avx_unaligned_2. Replace __memmove_chk_sse2_unaligned_2 with __memmove_chk_sse2_unaligned. Remove __memmove_chk_sse2 and __memmove_avx_unaligned_2. Replace __memmove_avx512_unaligned_2 with __memmove_avx512_unaligned. Replace __memmove_sse2_unaligned_2 with __memmove_sse2_unaligned. Remove __memmove_sse2. Replace __memcpy_chk_avx512_unaligned_2 with __memcpy_chk_avx512_unaligned. Remove __memcpy_chk_avx_unaligned_2. Replace __memcpy_chk_sse2_unaligned_2 with __memcpy_chk_sse2_unaligned. Remove __memcpy_chk_sse2. Remove __memcpy_avx_unaligned_2. Replace __memcpy_avx512_unaligned_2 with __memcpy_avx512_unaligned. Remove __memcpy_sse2_unaligned_2 and __memcpy_sse2. Replace __mempcpy_chk_avx512_unaligned_2 with __mempcpy_chk_avx512_unaligned. Remove __mempcpy_chk_avx_unaligned_2. Replace __mempcpy_chk_sse2_unaligned_2 with __mempcpy_chk_sse2_unaligned. Remove __mempcpy_chk_sse2. Replace __mempcpy_avx512_unaligned_2 with __mempcpy_avx512_unaligned. Remove __mempcpy_avx_unaligned_2. Replace __mempcpy_sse2_unaligned_2 with __mempcpy_sse2_unaligned. Remove __mempcpy_sse2. * sysdeps/x86_64/multiarch/memcpy.S (__new_memcpy): Support __memcpy_avx512_unaligned_erms and __memcpy_avx512_unaligned. Use __memcpy_avx_unaligned_erms and __memcpy_sse2_unaligned_erms if processor has ERMS. Default to __memcpy_sse2_unaligned. (ENTRY): Removed. (END): Likewise. (ENTRY_CHK): Likewise. (libc_hidden_builtin_def): Likewise. Don't include ../memcpy.S. * sysdeps/x86_64/multiarch/memcpy_chk.S (__memcpy_chk): Support __memcpy_chk_avx512_unaligned_erms and __memcpy_chk_avx512_unaligned. Use __memcpy_chk_avx_unaligned_erms and __memcpy_chk_sse2_unaligned_erms if if processor has ERMS. Default to __memcpy_chk_sse2_unaligned. * sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S Change function suffix from unaligned_2 to unaligned. * sysdeps/x86_64/multiarch/mempcpy.S (__mempcpy): Support __mempcpy_avx512_unaligned_erms and __mempcpy_avx512_unaligned. Use __mempcpy_avx_unaligned_erms and __mempcpy_sse2_unaligned_erms if processor has ERMS. Default to __mempcpy_sse2_unaligned. (ENTRY): Removed. (END): Likewise. (ENTRY_CHK): Likewise. (libc_hidden_builtin_def): Likewise. Don't include ../mempcpy.S. (mempcpy): New. Add a weak alias. * sysdeps/x86_64/multiarch/mempcpy_chk.S (__mempcpy_chk): Support __mempcpy_chk_avx512_unaligned_erms and __mempcpy_chk_avx512_unaligned. Use __mempcpy_chk_avx_unaligned_erms and __mempcpy_chk_sse2_unaligned_erms if if processor has ERMS. Default to __mempcpy_chk_sse2_unaligned.
* X86-64: Remove the previous SSE2/AVX2 memsetsH.J. Lu2016-06-081-0/+41
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since the new SSE2/AVX2 memsets are faster than the previous ones, we can remove the previous SSE2/AVX2 memsets and replace them with the new ones. This reduces the size of libc.so by about 900 bytes. No change in IFUNC selection if SSE2 and AVX2 memsets weren't used before. If SSE2 or AVX2 memset was used, the new SSE2 or AVX2 memset optimized with Enhanced REP STOSB will be used for processors with ERMS. The new AVX512 memset will be used for processors with AVX512 which prefer vzeroupper. [BZ #19881] * sysdeps/x86_64/multiarch/memset-sse2-unaligned-erms.S: Folded into ... * sysdeps/x86_64/memset.S: This. (__bzero): Removed. (__memset_tail): Likewise. (__memset_chk): Likewise. (memset): Likewise. (MEMSET_CHK_SYMBOL): New. Define only if MEMSET_SYMBOL isn't defined. (MEMSET_SYMBOL): Define only if MEMSET_SYMBOL isn't defined. * sysdeps/x86_64/multiarch/memset-avx2.S: Removed. (__memset_zero_constant_len_parameter): Check SHARED instead of PIC. * sysdeps/x86_64/multiarch/Makefile (sysdep_routines): Remove memset-avx2 and memset-sse2-unaligned-erms. * sysdeps/x86_64/multiarch/ifunc-impl-list.c (__libc_ifunc_impl_list): Remove __memset_chk_sse2, __memset_chk_avx2, __memset_sse2 and __memset_avx2_unaligned. * sysdeps/x86_64/multiarch/memset-vec-unaligned-erms.S (__bzero): Enabled. * sysdeps/x86_64/multiarch/memset.S (memset): Replace __memset_sse2 and __memset_avx2 with __memset_sse2_unaligned and __memset_avx2_unaligned. Use __memset_sse2_unaligned_erms or __memset_avx2_unaligned_erms if processor has ERMS. Support __memset_avx512_unaligned_erms and __memset_avx512_unaligned. (memset): Removed. (__memset_chk): Likewise. (MEMSET_SYMBOL): New. (libc_hidden_builtin_def): Replace __memset_sse2 with __memset_sse2_unaligned. * sysdeps/x86_64/multiarch/memset_chk.S (__memset_chk): Replace __memset_chk_sse2 and __memset_chk_avx2 with __memset_chk_sse2_unaligned and __memset_chk_avx2_unaligned_erms. Use __memset_chk_sse2_unaligned_erms or __memset_chk_avx2_unaligned_erms if processor has ERMS. Support __memset_chk_avx512_unaligned_erms and __memset_chk_avx512_unaligned.
* Generate new format names in auto-libm-test-outPaul E. Murphy2016-06-081-0/+19
| | | | | | | | This converts the inclusion macro for each test to use the format specific macro. In addition, the format specifier is removed as it is applied via the LIT() macro which is itself applied when converting the auto inputs and libm-test.inc into libm-test.c.
* Remove type specific information from auto-libm-test-inPaul E. Murphy2016-06-081-0/+12
| | | | | | | | | | | | | Apply the following sed regexes to auto-libm-test-in in order: s/flt-32/binary32/ s/dbl-64/binary64/ s/ldbl-96-intel/intel96/ s/ldbl-96-m68k/m68k96/ s/ldbl-128ibm/ibm128/ s/ldbl-128/binary128/ and fixup ldbl-96 comment manually.
* Remove CHOOSE() macro from libm-tests.incPaul E. Murphy2016-06-081-0/+32
| | | | | | | | | | Use gen-libm-test.pl to generate a list of macros mapping to libm-test-ulps.h as this simplifies adding new types without having to modify a growing number of static headers each time a type is added. This also removes the final usage of the TEST_(DOUBLE|FLOAT|LDOUBLE) macros. Thus, they too are removed.
* Apply LIT(x) to floating point literals in libm-test.cPaul E. Murphy2016-06-081-0/+12
| | | | | | | | | | | | | | | | | | With the exception of the second argument of nexttoward, any suffixes should be stripped from the test input, and the macro LIT(x) should be applied to use the correct suffix for the type being tested. This adds a new argument type "j" to gen-test-libm.pl to signify an argument to a test input which does not require fixup. The test cases of nexttoward have been updated to use this new feature. This applies post-processing to all of the test inputs through gen-libm-test.pl to strip literal suffixes and apply the LIT(x) macro, with one exception stated above. This seems a bit cleaner than tossing the macro onto everything, albeit slightly more obfuscated.
* malloc: Correct size computation in realloc for dumped fake mmapped chunksFlorian Weimer2016-06-081-0/+7
| | | | | | | | For regular mmapped chunks there are two size fields (hence a reduction by 2 * SIZE_SZ bytes), but for fake chunks, we only have one size field, so we need to subtract SIZE_SZ bytes. This was initially reported as Emacs bug 23726.
* Fix i386 atanhl (sNaN) (bug 20219).Joseph Myers2016-06-071-0/+5
| | | | | | | | | | | | | The i386 version of atanhl returns sNaN for sNaN input. This patch fixes it to add NaN arguments to themselves so it returns qNaN in this case. Tested for x86_64 and x86. [BZ #20219] * sysdeps/i386/fpu/e_atanhl.S (__ieee754_atanhl): Add NaN argument to itself. * math/libm-test.inc (atanh_test_data): Add sNaN tests.
* Fix i386 asinhl (sNaN) (bug 20218).Joseph Myers2016-06-071-0/+7
| | | | | | | | | | | | | | The i386 version of asinhl returns sNaN (without raising any exceptions) for sNaN input. This patch fixes it to add non-finite arguments to themselves, so that "invalid" is raised and qNaN returned. Tested for x86_64 and x86. [BZ #20218] * sysdeps/i386/fpu/s_asinhl.S (__asinhl): Add non-finite argument to itself. * math/libm-test.inc (asinh_test_data): Add sNaN tests.
* Check FMA after COMMON_CPUID_INDEX_80000001H.J. Lu2016-06-071-0/+7
| | | | | | | | | | | Since the FMA4 bit is in COMMON_CPUID_INDEX_80000001 and FMA4 requires AVX, determine if FMA4 is usable after COMMON_CPUID_INDEX_80000001 is available and if AVX is usable. [BZ #20195] * sysdeps/x86/cpu-features.c (get_common_indeces): Move FMA4 check to ... (init_cpu_features): Here.
* Bug 20214: Fix linux/in6.h and netinet/in.h sync.Carlos O'Donell2016-06-071-1/+14
| | | | | | | | | | | | | | | | | | | | | | | | In: https://sourceware.org/glibc/wiki/Synchronizing_Headers we explain how we synchronize our headers with Linux kernel headers. In order to synchronize with the Linux linux/in6.h and linux/ipv6.h headers we checked for their guard macros and then defined __USE_KERNEL_IPV6_DEFS and conditionalized code on this macro. In upstream kernel 56c176c9 the _UAPI prefix was stripped and this broke our synchronized headers again. We now need to check for _LINUX_IN6_H and _IPV6_H, and keep checking the old versions of the header guard checks for maximum backwards compatibility with older Linux headers (the history is actually a bit muddled here and it appears upstream linus kernel broke this 10 months *before* our fix was ever applied to glibc, but without glibc testing we didn't notice and distro kernels have their own testing to fix this). This patch fixes synchronization with linux/in6.h and with netinet/in.h.
* Bug 20198: quick_exit should not call destructors.Carlos O'Donell2016-06-061-0/+54
| | | | | | | | | | | | | | | | | | In C++11 18.5.12 says "Objects shall not be destroyed as a result of calling quick_exit." In C11 quick_exit is silent about thread object destruction. Therefore to make glibc C++ compliant we do not call any thread local destructors. A new regression test verifies the fix. I will note that C++11 18.5.3 makes it clear that C++ defines additional requirements for _Exit() to prevent it from executing destructors. Given that the point of _Exit() is to terminate the process immediately it makes sense the C and C++ should line up and avoid calling destructors. No failures. New regtest passes.
* Fix a typo in comments in memmove-vec-unaligned-erms.SH.J. Lu2016-06-061-0/+5
| | | | | * sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S: Fix a typo in comments.
* Fix dbl-64 asin (sNaN) (bug 20213).Joseph Myers2016-06-061-0/+7
| | | | | | | | | | | | | The dbl-64 version of asin returns sNaN for sNaN arguments. This patch fixes it to add NaN arguments to themselves so that qNaN is returned in this case. Tested for x86_64 and x86. [BZ #20213] * sysdeps/ieee754/dbl-64/e_asin.c (__ieee754_asin): Add NaN argument to itself. * math/libm-test.inc (asin_test_data): Add sNaN tests.
* Consolidate pwritev/pwritev64 implementationsAdhemerval Zanella2016-06-061-0/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch consolidates all the pwritev{64} implementation for Linux in only one (sysdeps/unix/sysv/linux/pwritev{64}.c). It also removes the syscall from the auto-generation using assembly macros. It was based on previous pwrite/pwrite64 consolidation patch. The new macro SYSCALL_LL{64} is used to handle the offset argument and alias is created for __ASSUME_OFF_DIFF_OFF64 in case of pread64. Checked on x86_64, i386, aarch64, and powerpc64le. * misc/Makefile (CFLAGS-pwritev.c): New variable: add cancellation required flags. (CFLAGS-pwritev64.c): Likewise. * sysdeps/unix/sysv/linux/generic/wordsize-32/pwritev.c: Remove file. * sysdeps/unix/sysv/linux/generic/wordsize-32/pwritev64.c: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n64/pwritev64.c: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/pwritev.c: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/pwritev64.: Likwise. * sysdeps/unix/sysv/linux/x86_64/x32/syscalls.list (pwritev): Remove syscall from auto-generation. * sysdeps/unix/sysv/linux/pwritev.c: Rewrite implementation. [WORDSIZE == 64] (pwritev64): Remove macro. [!PWRITEV] (PWRITEV): Likewise. [!PWRITEV] (PWRITEV_REPLACEMENT): Likewise. [!PWRITEV] (PWRITE): Likewise. [!PWRITEV] (OFF_T): Likewise. [!__ASSUME_PWRITEV] (PWRITEV_REPLACEMENT): Likewise. (LO_HI_LONG): Remove macro. [__WORDSIZE != 64 || __ASSUME_OFF_DIFF_OFF64] (pwritev): Add function. * sysdeps/unix/sysv/linux/pwritev64.c: Rewrite implementation. (PWRITEV): Remove macro. (PWRITEV_REPLACEMENTE): Likewise. (PWRITE): Likewise. (OFF_T): Likewise. (pwritev64): New function. * nptl/tst-cancel4.c (tf_writev): Add test.
* Consolidate preadv/preadv64 implementationAdhemerval Zanella2016-06-061-0/+29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch consolidates all the preadv{64} implementation for Linux in only one (sysdeps/unix/sysv/linux/preadv{64}.c). It also removes the syscall from the auto-generation using assembly macros. It was based on previous pread/pread64 consolidation patch. The new macro SYSCALL_LL{64} is used to handle the offset argument and alias is created for __ASSUME_OFF_DIFF_OFF64 in case of pread64. Checked on x86_64, i386, aarch64, and powerpc64le. * misc/Makefile (CFLAGS-preadv.c): New variable: add cancellation required flags. (CFLAGS-preadv64.c): Likewise. * sysdeps/unix/sysv/linux/generic/wordsize-32/preadv.c: Remove file. * sysdeps/unix/sysv/linux/generic/wordsize-32/preadv64.c: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n64/preadv64.c: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/preadv.c: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/preadv64.: Likwise. * sysdeps/unix/sysv/linux/x86_64/x32/syscalls.list (preadv): Remove syscall from auto-generation. * sysdeps/unix/sysv/linux/preadv.c: Rewrite implementation. [WORDSIZE == 64] (preadv64): Remove macro. [!PREADV] (PREADV): Likewise. [!PREADV] (PREADV_REPLACEMENT): Likewise. [!PREADV] (PREAD): Likewise. [!PREADV] (OFF_T): Likewise. [!__ASSUME_PREADV] (PREADV_REPLACEMENT): Likewise. (LO_HI_LONG): Remove macro. [__WORDSIZE != 64 || __ASSUME_OFF_DIFF_OFF64] (preadv): Add function. * sysdeps/unix/sysv/linux/preadv64.c: Rewrite implementation. (PREADV): Remove macro. (PREADV_REPLACEMENTE): Likewise. (PREAD): Likewise. (OFF_T): Likewise. (preadv64): New function. * nptl/tst-cancel4.c (tf_preadv): Add test.
* Fix dbl-64 acos (sNaN) (bug 20212).Joseph Myers2016-06-061-0/+7
| | | | | | | | | | | | | The dbl-64 version of acos returns sNaN for sNaN arguments. This patch fixes it to add NaN arguments to themselves so that qNaN is returned in this case. Tested for x86_64 and x86. [BZ #20212] * sysdeps/ieee754/dbl-64/e_asin.c (__ieee754_acos): Add NaN argument to itself. * math/libm-test.inc (acos_test_data): Add sNaN tests.
* powerpc: Fix --disable-multi-arch build on POWER8Tulio Magno Quites Machado Filho2016-06-061-0/+15
| | | | | | Add missing symbols of stpncpy and strcasestr when multi-arch is disabled. Fix memset call from strncpy/stpncpy when multi-arch is disabled.
* tst-rec-dlopen: Fix build fail due to missing inclusion of string.hStefan Liebler2016-06-061-0/+4
| | | | | | | | | | | | | | | | | | | | on S390, I get a compile error for dlfcn/tst-rec-dlopen.c: tst-rec-dlopen.c: In function ‘malloc’: tst-rec-dlopen.c:101:4: error: implicit declaration of function ‘strlen’ [-Werror=implicit-function-declaration] (void) write (STDOUT_FILENO, message, strlen (message)); ^ tst-rec-dlopen.c:101:42: error: incompatible implicit declaration of built-in function ‘strlen’ [-Werror] (void) write (STDOUT_FILENO, message, strlen (message)); ^ tst-rec-dlopen.c:112:42: error: incompatible implicit declaration of built-in function ‘strlen’ [-Werror] (void) write (STDOUT_FILENO, message, strlen (message)); ^ This patch adds the missing "#include <string.h>" for strlen. ChangeLog: * dlfcn/tst-rec-dlopen.c: Include string.h.
* 2016-06-05 Paul Pluzhnikov <ppluzhnikov@google.com>Paul Pluzhnikov2016-06-051-0/+5
| | | | | * manual/install.texi: Remove mention of --without-tls * INSTALL: Regenerate.
* tst-rec-dlopen: Use interposed malloc instead of hooksFlorian Weimer2016-06-051-0/+9
| | | | This avoids use of the deprecated hook variables.
* Use __typeof instead of typeofAndreas Schwab2016-06-041-0/+4
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* Fix include/wchar.h for C++Carlos O'Donell2016-06-031-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When trying to compile regression tests that use C++ and the threads header you get this failure: In file included from /usr/include/c++/5.3.1/cwchar:44:0, from /usr/include/c++/5.3.1/bits/postypes.h:40, from /usr/include/c++/5.3.1/bits/char_traits.h:40, from /usr/include/c++/5.3.1/string:40, from /usr/include/c++/5.3.1/stdexcept:39, from /usr/include/c++/5.3.1/array:38, from /usr/include/c++/5.3.1/tuple:39, from /usr/include/c++/5.3.1/functional:55, from /usr/include/c++/5.3.1/thread:39, from tst-thread-quick_exit.cc:19: ../include/wchar.h:105:23: error: invalid conversion from ‘wchar_t* (*)(wchar_t*, wchar_t, size_t) throw () {aka wchar_t* (*)(wchar_t*, wchar_t, long unsigned int) throw ()}’ to ‘int’ [-fpermissive] extern typeof (wmemset) __wmemset; ^ ../include/wchar.h:105:25: error: expected ‘,’ or ‘;’ before ‘__wmemset’ extern typeof (wmemset) __wmemset; ^ The simplest fix for C++ is to avoid the use of typeof and just declare the prototype as expected. No regressions on x86_64. Committed as obvious. The include/wchar.h header is only for internal build uses and therefore is not ever seen by any external users and needs no bug #.
* Fix x86/x86_64 nextafterl incrementing negative subnormals (bug 20205).Joseph Myers2016-06-031-0/+9
| | | | | | | | | | | | | | | | | The x86 / x86_64 implementation of nextafterl (also used for nexttowardl) produces incorrect results (NaNs) when negative subnormals, the low 32 bits of whose mantissa are zero, are incremented towards zero. This patch fixes this by disabling the logic to decrement the exponent in that case. Tested for x86_64 and x86. [BZ #20205] * sysdeps/i386/fpu/s_nextafterl.c (__nextafterl): Do not adjust exponent when incrementing negative subnormal with low mantissa word zero. * math/libm-test.inc (nextafter_test_data) [TEST_COND_intel96]: Add another test.
* libio: Use wmemset instead of __wmemset to avoid linknamespace issueFlorian Weimer2016-06-031-0/+5
| | | | | If the wide string operations are pulled into the link, the wmemset symbol can cause a linknamespace failure.
* Fix macro API for __USE_KERNEL_IPV6_DEFS.Carlos O'Donell2016-06-021-0/+9
| | | | | | | | | | | | | | | | The use of __USE_KERNEL_IPV6_DEFS with ifndef is bad practice per: https://sourceware.org/glibc/wiki/Wundef. This change moves it to use 'if' and always define the macro. Please note that this is not the only problem with this code. I have a series of fixes after this one to resolve breakage with this code and add regression tests for it via compile-only source testing (to be discussed in another thread). Unfortunately __USE_KERNEL_XATTR_DEFS is set by the kernel and not glibc, and uses 'define', so we can't fix that yet.
* fork in libpthread cannot use IFUNC resolver [BZ #19861]Florian Weimer2016-06-011-0/+9
| | | | | | This commit only addresses the fork case, the vfork case has to be a tail call, which is why the generic code needs an IFUNC resolver there.
* Merge branch 'master' of ssh://sourceware.org/git/glibcPaul Pluzhnikov2016-05-301-0/+9
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| * hurd: disable ifunc for nowSamuel Thibault2016-05-301-0/+3
| | | | | | | | | | | | * sysdeps/mach/hurd/configure.ac (libc_cv_ld_gnu_indirect_function): Set to no. * sysdeps/mach/hurd/configure: Refresh.
| * Add more hurd exception to local headers listSamuel Thibault2016-05-301-0/+6
| | | | | | | | | | | | * scripts/check-local-headers.sh (exclude): Add hurd/ihash.h, and include .*-.*/ in addition to .*-.*-.*/ (i.e. i386-gnu in addition to i386-linux-gnu).
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