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* Vector sin for x86_64 and tests.Andrew Senkevich2015-06-1130-5/+1333
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Here is implementation of vectorized sin containing SSE, AVX, AVX2 and AVX512 versions according to Vector ABI <https://groups.google.com/forum/#!topic/x86-64-abi/LmppCfN1rZ4>. * bits/libm-simd-decl-stubs.h: Added stubs for sin. * math/bits/mathcalls.h: Added sin declaration with __MATHCALL_VEC. * sysdeps/unix/sysv/linux/x86_64/libmvec.abilist: New versions added. * sysdeps/x86/fpu/bits/math-vector.h: SIMD declaration for sin. * sysdeps/x86_64/fpu/Makefile (libmvec-support): Added new files. * sysdeps/x86_64/fpu/Versions: New versions added. * sysdeps/x86_64/fpu/libm-test-ulps: Regenerated. * sysdeps/x86_64/fpu/multiarch/Makefile (libmvec-sysdep_routines): Added build of SSE, AVX2 and AVX512 IFUNC versions. * sysdeps/x86_64/fpu/multiarch/svml_d_sin2_core.S: New file. * sysdeps/x86_64/fpu/multiarch/svml_d_sin2_core_sse4.S: New file. * sysdeps/x86_64/fpu/multiarch/svml_d_sin4_core.S: New file. * sysdeps/x86_64/fpu/multiarch/svml_d_sin4_core_avx2.S: New file. * sysdeps/x86_64/fpu/multiarch/svml_d_sin8_core.S: New file. * sysdeps/x86_64/fpu/multiarch/svml_d_sin8_core_avx512.S: New file. * sysdeps/x86_64/fpu/svml_d_sin2_core.S: New file. * sysdeps/x86_64/fpu/svml_d_sin4_core.S: New file. * sysdeps/x86_64/fpu/svml_d_sin4_core_avx.S: New file. * sysdeps/x86_64/fpu/svml_d_sin8_core.S: New file. * sysdeps/x86_64/fpu/svml_d_sin_data.S: New file. * sysdeps/x86_64/fpu/svml_d_sin_data.h: New file. * sysdeps/x86_64/fpu/test-double-vlen2-wrappers.c: Added vector sin test. * sysdeps/x86_64/fpu/test-double-vlen2.c: Likewise. * sysdeps/x86_64/fpu/test-double-vlen4-avx2-wrappers.c: Likewise. * sysdeps/x86_64/fpu/test-double-vlen4-avx2.c: Likewise. * sysdeps/x86_64/fpu/test-double-vlen4-wrappers.c: Likewise. * sysdeps/x86_64/fpu/test-double-vlen4.c: Likewise. * sysdeps/x86_64/fpu/test-double-vlen8-wrappers.c: Likewise. * sysdeps/x86_64/fpu/test-double-vlen8.c: Likewise. * NEWS: Mention addition of x86_64 vector sin.
* More strict check of AVX512 support in assembler.Andrew Senkevich2015-06-113-0/+7
| | | | | | | | Binutils 2.24 doesn't support some AVX512 instructions with ZMM registers, so we need add more strict check. * configure.ac: Added more strict check. * configure: Regenerated.
* pthread_key_create: Fix typo in commentFlorian Weimer2015-06-112-1/+6
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* nptl: restore .interp section in libpthread.soGleb Fotengauer-Malinovskiy2015-06-104-3/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | In commit 02657da2cf4457804ed938ee08b8316249126444, .interp section was removed from libpthread.so. This led to an error: $ /lib64/libpthread.so.0 Native POSIX Threads Library by Ulrich Drepper et al Copyright (C) 2015 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Forced unwind support included. Segmentation fault (gdb) bt #0 0x00000000000055a6 in _exit@plt () Unfortunately, there is no way to add a regression test for the bug because .interp specifies the path to dynamic linker of the target system. [BZ #18479] * nptl/pt-interp.c: New file. * nptl/Makefile (libpthread-routines, libpthread-shared-only-routines): Add pt-interp. [$(build-shared) = yes] ($(objpfx)pt-interp.os): Depend on $(common-objpfx)runtime-linker.h.
* Prepare for restoration of .interp section in libpthread.soDmitry V. Levin2015-06-105-11/+26
| | | | | | | | | | | | | | | | | | Make runtime-linker.h available outside $(elf-objpfx) by moving the file to $(common-objpfx) and the rules for it to Makerules. Tested for x86_64 and x86 (testsuite, and that no compiled code changed by the patch). * Makeconfig (+interp): Remove unused variable. * elf/Makefile ($(objpfx)interp.os): Define for [$(build-shared) = yes] only. Depend on $(common-objpfx)runtime-linker.h instead of $(elf-objpfx)runtime-linker.h. ($(elf-objpfx)runtime-linker.h): Rename to $(common-objpfx)runtime-linker.h and move ... * Makerules [$(build-shared) = yes]: ... here. * elf/interp.c: Include <runtime-linker.h> instead of <elf/runtime-linker.h>.
* x86: Remove vsyscall usageAdhemerval Zanella2015-06-097-74/+36
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch removes the vsyscall usage for x86_64 port. As indicated by kernel code comments [1], vsyscalls are a legacy ABI and its concept is problematic: - It interferes with ASLR. - It's awkward to write code that lives in kernel addresses but is callable by userspace at fixed addresses. - The whole concept is impossible for 32-bit compat userspace. - UML cannot easily virtualize a vsyscall. The VDSO is a better approach for such functionality. Tested on i686, x86_64, and x32. * sysdeps/unix/sysv/linux/i386/gettimeofday.c (__gettimeofday_syscall): Remove vsyscall fallback. * sysdeps/unix/sysv/linux/i386/time.c (__time_syscall): Likewise. * sysdeps/unix/sysv/linux/x86/gettimeofday.c (__gettimeofday_syscall): Add syscall fallback function. (gettimeofday_ifunc): Use __gettimeofday_syscall as fallback mechanism if vDSO is not present. * sysdeps/unix/sysv/linux/x86/time.c (__time_syscall): Add syscall fallback function. (time_ifunc): Use __time_syscall as fallback mechanism if vDSO is not present. * sysdeps/unix/sysv/linux/x86_64/gettimeofday.c: Remove file. * sysdeps/unix/sysv/linux/x86_64/time.c: Likewise. [1] arch/x86/kernel/vsyscall_64.c
* Fix regcomp wcscoll, wcscmp namespace (bug 18497).Joseph Myers2015-06-0912-23/+61
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | regcomp brings in references to wcscoll, which isn't in all the standards that contain regcomp. In turn, wcscoll brings in references to wcscmp, also not in all those standards. This patch fixes this by making those functions into weak aliases of __wcscoll and __wcscmp and calling those names instead as needed. Tested for x86_64 and x86 (testsuite, and that disassembly of installed shared libraries is unchanged by the patch). [BZ #18497] * wcsmbs/wcscmp.c [!WCSCMP] (WCSCMP): Define as __wcscmp instead of wcscmp. (wcscmp): Define as weak alias of WCSCMP. * wcsmbs/wcscoll.c (STRCOLL): Define as __wcscoll instead of wcscoll. (USE_HIDDEN_DEF): Define. [!USE_IN_EXTENDED_LOCALE_MODEL] (wcscoll): Define as weak alias of __wcscoll. Don't use libc_hidden_weak. * wcsmbs/wcscoll_l.c (STRCMP): Define as __wcscmp instead of wcscmp. * sysdeps/i386/i686/multiarch/wcscmp-c.c [SHARED] (libc_hidden_def): Define __GI___wcscmp instead of __GI_wcscmp. (weak_alias): Undefine and redefine. * sysdeps/i386/i686/multiarch/wcscmp.S (wcscmp): Rename to __wcscmp and define as weak alias of __wcscmp. * sysdeps/x86_64/wcscmp.S (wcscmp): Likewise. * include/wchar.h (__wcscmp): Declare. Use libc_hidden_proto. (__wcscoll): Likewise. (wcscmp): Don't use libc_hidden_proto. (wcscoll): Likewise. * posix/regcomp.c (build_range_exp): Call __wcscoll instead of wcscoll. * posix/regexec.c (check_node_accept_bytes): Likewise. * conform/Makefile (test-xfail-XPG3/regex.h/linknamespace): Remove variable. (test-xfail-XPG4/regex.h/linknamespace): Likewise. (test-xfail-POSIX/regex.h/linknamespace): Likewise.
* Fix pathconf statvfs namespace (bug 18507).Joseph Myers2015-06-097-10/+28
| | | | | | | | | | | | | | | | | | | | | | | | | | | pathconf uses __statvfs64, and fpathconf uses __fstatvfs64. On systems using sysdeps/unix/sysv/linux/wordsize-64, __statvfs64 then brings in the strong symbol statvfs, and __fstatvfs64 brings in the strong symbol fstatvfs, which are not in all the standards that have pathconf and fpathconf. This patch fixes this by making those symbols into weak aliases. Tested for x86_64 and x86 (testsuite, and that disassembly of installed shared libraries is unchanged by the patch). [BZ #18507] * sysdeps/unix/sysv/linux/fstatvfs.c (fstatvfs): Rename to __fstatvfs and define as weak alias of __fstatvfs. Use libc_hidden_weak. * sysdeps/unix/sysv/linux/statvfs.c (statvs): Rename to __statvfs and define as weak alias of __statvfs. Use libc_hidden_weak. * sysdeps/unix/sysv/linux/wordsize-64/fstatvfs.c (__fstatvfs64): Define as alias of __fstatvfs, not fstatvfs. (fstatvfs64): Likewise. * sysdeps/unix/sysv/linux/wordsize-64/statvfs.c (__statvfs64): Define as alias of __statvfs, not statvfs. (statvfs64): Likewise. * conform/Makefile (test-xfail-POSIX/unistd.h/linknamespace): Remove variable.
* Consolidate sched_getcpuAdhemerval Zanella2015-06-0913-203/+32
| | | | | | | | This patch consolidates the sched_getcpu implementations across all arches (except tile, which requires its own). This patch removes the powerpc, x86_64 and x32 specific files and change the default linux one to use INLINE_VSYSCALL where possible (for ports that implements it).
* This patch adds vector cosf tests.Andrew Senkevich2015-06-0916-4/+461
| | | | | | | | | | | | | | | | | | * math/Makefile: Added CFLAGS for new tests. * math/test-float-vlen16.h: New file. * math/test-float-vlen4.h: New file. * math/test-float-vlen8.h: New file. * math/test-double-vlen2.h: Fixed 2 argument macro and comment. * sysdeps/x86_64/fpu/Makefile: Added new tests and variables. * sysdeps/x86_64/fpu/libm-test-ulps: Regenerated. * sysdeps/x86_64/fpu/test-float-vlen16-wrappers.c: New file. * sysdeps/x86_64/fpu/test-float-vlen16.c: New file. * sysdeps/x86_64/fpu/test-float-vlen4-wrappers.c: New file. * sysdeps/x86_64/fpu/test-float-vlen4.c: New file. * sysdeps/x86_64/fpu/test-float-vlen8-avx2-wrappers.c: New file. * sysdeps/x86_64/fpu/test-float-vlen8-avx2.c: New file. * sysdeps/x86_64/fpu/test-float-vlen8-wrappers.c: New file. * sysdeps/x86_64/fpu/test-float-vlen8.c: New file.
* Vector cosf for x86_64.Andrew Senkevich2015-06-0920-3/+2458
| | | | | | | | | | | | | | | | | | | | | | | | | | | Here is implementation of vectorized cosf containing SSE, AVX, AVX2 and AVX512 versions according to Vector ABI <https://groups.google.com/forum/#!topic/x86-64-abi/LmppCfN1rZ4>. * sysdeps/x86_64/fpu/Makefile (libmvec-support): Added new files. * sysdeps/x86_64/fpu/Versions: New versions added. * sysdeps/x86_64/fpu/svml_s_cosf4_core.S: New file. * sysdeps/x86_64/fpu/multiarch/svml_s_cosf4_core.S: New file. * sysdeps/x86_64/fpu/multiarch/svml_s_cosf4_core_sse4.S: New file. * sysdeps/x86_64/fpu/svml_s_cosf8_core_avx.S: New file. * sysdeps/x86_64/fpu/svml_s_cosf8_core.S: New file. * sysdeps/x86_64/fpu/multiarch/svml_s_cosf8_core.S: New file. * sysdeps/x86_64/fpu/multiarch/svml_s_cosf8_core_avx2.S: New file. * sysdeps/x86_64/fpu/svml_s_cosf16_core.S: New file. * sysdeps/x86_64/fpu/multiarch/svml_s_cosf16_core.S: New file. * sysdeps/x86_64/fpu/multiarch/svml_s_cosf16_core_avx512.S: New file. * sysdeps/x86_64/fpu/svml_s_wrapper_impl.h: New file. * sysdeps/x86_64/fpu/svml_s_cosf_data.S: New file. * sysdeps/x86_64/fpu/svml_s_cosf_data.h: New file. * sysdeps/x86_64/fpu/multiarch/Makefile (libmvec-sysdep_routines): Added build of SSE, AVX2 and AVX512 IFUNC versions. * sysdeps/unix/sysv/linux/x86_64/libmvec.abilist: New versions added. * sysdeps/x86/fpu/bits/math-vector.h: Added SIMD declaration for cosf. * NEWS: Mention addition of x86_64 vector cosf.
* Addition of testing infrastructure for vector math functions.Andrew Senkevich2015-06-0918-9/+606
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We test vector math functions using scalar tests infrastructure with help of special wrappers from scalar versions to vector ones. Wrapper implemented using platform specific vector types and placed in separate file for compilation with architecture specific options, main part of test has no such options. With help of system of definitions unfolding of which is drived from test code we have wrapper called in individual testing function instead of scalar function. Also system of definitions includes generated during make check header math/libm-have-vector-test.h with series of conditional definitions which help to avoid build fails for functions having no vector versions; runtime architecture check to prevent runtime fails of test run on inappropriate hardware. * math/Makefile: Added rules for vector tests. * math/gen-libm-have-vector-test.sh: Added generation of wrapper declaration under condition. * math/test-double-vlen2.h: New file. * math/test-double-vlen4.h: New file. * math/test-double-vlen8.h: New file. * math/test-vec-loop.h: Added initialization macro. * sysdeps/x86_64/fpu/Makefile: Added variables for vector tests. * sysdeps/x86_64/fpu/libm-test-ulps: Regenarated. * sysdeps/x86_64/fpu/math-tests-arch.h: New file. * sysdeps/x86_64/fpu/test-double-vlen2-wrappers.c: New file. * sysdeps/x86_64/fpu/test-double-vlen2.c: New file. * sysdeps/x86_64/fpu/test-double-vlen4-avx2-wrappers.c: New file. * sysdeps/x86_64/fpu/test-double-vlen4-avx2.c: New file. * sysdeps/x86_64/fpu/test-double-vlen4-wrappers.c: New file. * sysdeps/x86_64/fpu/test-double-vlen4.c: New file. * sysdeps/x86_64/fpu/test-double-vlen8-wrappers.c: New file. * sysdeps/x86_64/fpu/test-double-vlen8.c: New file.
* Start of series of patches with x86_64 vector math functions.Andrew Senkevich2015-06-0926-1/+1499
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Here is implementation of cos containing SSE, AVX, AVX2 and AVX512 versions according to Vector ABI which had been discussed in <https://groups.google.com/forum/#!topic/x86-64-abi/LmppCfN1rZ4>. Vector math library build and ABI testing enabled by default for x86_64. * sysdeps/x86_64/fpu/Makefile: New file. * sysdeps/x86_64/fpu/Versions: New file. * sysdeps/x86_64/fpu/svml_d_cos_data.S: New file. * sysdeps/x86_64/fpu/svml_d_cos_data.h: New file. * sysdeps/x86_64/fpu/svml_d_cos2_core.S: New file. * sysdeps/x86_64/fpu/svml_d_cos4_core.S: New file. * sysdeps/x86_64/fpu/svml_d_cos4_core_avx.S: New file. * sysdeps/x86_64/fpu/svml_d_cos8_core.S: New file. * sysdeps/x86_64/fpu/svml_d_wrapper_impl.h: New file. * sysdeps/x86_64/fpu/multiarch/svml_d_cos2_core.S: New file. * sysdeps/x86_64/fpu/multiarch/svml_d_cos2_core_sse4.S: New file. * sysdeps/x86_64/fpu/multiarch/svml_d_cos4_core.S: New file. * sysdeps/x86_64/fpu/multiarch/svml_d_cos4_core_avx2.S: New file. * sysdeps/x86_64/fpu/multiarch/svml_d_cos8_core.S: New file. * sysdeps/x86_64/fpu/multiarch/svml_d_cos8_core_avx512.S: New file. * sysdeps/x86_64/fpu/multiarch/Makefile (libmvec-sysdep_routines): Added build of SSE, AVX2 and AVX512 IFUNC versions. * sysdeps/x86/fpu/bits/math-vector.h: Added SIMD declaration for cos. * math/bits/mathcalls.h: Added cos declaration with __MATHCALL_VEC. * sysdeps/x86_64/configure.ac: Options for libmvec build. * sysdeps/x86_64/configure: Regenerated. * sysdeps/x86_64/sysdep.h (cfi_offset_rel_rsp): New macro. * sysdeps/unix/sysv/linux/x86_64/libmvec.abilist: New file. * manual/install.texi (Configuring and compiling): Document --disable-mathvec. * INSTALL: Regenerated. * NEWS: Mention addition of libmvec and x86_64 vector cos.
* Remove unused PREDEFINED_CLASSES codeMarko Myllynen2015-06-093-92/+11
| | | | | | | | | | | | | | | Hi, AFAICS PREDEFINED_CLASSES is never defined thus the code is unused. It would seem that the code is related to LO_LTYPE which was discussed in the past but there are no any recent references: http://pubs.opengroup.org/onlinepubs/9638399/loltype.htm Patch below, compiles and passes make check. 2015-05-12 Marko Myllynen <myllynen@redhat.com> * locale/C-ctype.c (PREDEFINED_CLASSES): Remove. * locale/programs/ld-ctype.c: Likewise.
* This patch adds detection of availability for AVX512F and AVX512DQ ISAs.Andrew Senkevich2015-06-083-0/+42
| | | | | | | | * sysdeps/x86_64/multiarch/init-arch.h (bit_AVX512F_Usable, bit_AVX512DQ_Usable, bit_Opmask_state, bit_ZMM0_15_state, bit_ZMM16_31_state): New macro. * sysdeps/x86_64/multiarch/init-arch.c (__init_cpu_features): Check and set bit_AVX512F_Usable, bit_AVX512DQ_Usable.
* Say "C++ tests" in comment on __open_memstream declaration.Joseph Myers2015-06-082-1/+5
| | | | * include/stdio.h (__open_memstream): Say "C++ tests" in comment.
* mach: fix typoSamuel Thibault2015-06-062-1/+5
| | | | * mach/mach/mach_traps.h (thread_switch): Fix typo in comment.
* Fix open_memstream namespace (bug 18498).Joseph Myers2015-06-057-10/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | open_memstream is new in the 2008 edition of POSIX. However, the older functions getopt, closelog and fmtmsg all bring in references to it. This patch fixes this in the usual way, making open_memstream into a weak alias of __open_memstream and calling __open_memstream from the relevant places. Tested for x86_64 and x86 (testsuite, and that disassembly of installed shared libraries is unchanged by the patch). 32-bit builds produce an XPASS for conform/POSIX/unistd.h/linknamespace after this patch (because the only cause of failure left there now is 64-bit specific); that will disappear once the 64-bit failure is resolved and the XFAIL removed at that time. [BZ #18498] * libio/memstream.c (open_memstream): Rename to __open_memstream and define as weak alias of __open_memstream. * include/stdio.h (__open_memstream): Declare. Use libc_hidden_proto. (open_memstream): Don't use libc_hidden_proto. * misc/syslog.c (__vsyslog_chk): Call __open_memstream instead of open_memstream. * posix/getopt.c (_getopt_internal_r): Likewise. * conform/Makefile (test-xfail-XPG3/stdio.h/linknamespace): Remove variable. (test-xfail-XPG4/stdio.h/linknamespace): Likewise. (test-xfail-UNIX98/stdio.h/linknamespace): Likewise. (test-xfail-XOPEN2K/unistd.h/linknamespace): Likewise.
* Fix regex wcrtomb namespace (bug 18496).Joseph Myers2015-06-053-3/+7
| | | | | | | | | | | | | | The regex code brings in references to wcrtomb, which isn't in all the standards that contain regex. This patch makes it call __wcrtomb instead (in fact some places already called __wcrtomb, so this patch makes it internally consistent about which name is used). Tested for x86_64 and x86 that installed stripped shared libraries are unchanged by the patch. [BZ #18496] * posix/regex_internal.c (build_wcs_upper_buffer): Call __wcrtomb instead of wcrtomb.
* Fix psignal, psiginfo declaration conditions (bug 18483).Joseph Myers2015-06-054-7/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | signal.h declares psignal and psiginfo if __USE_XOPEN2K - that is, for the 2001 edition of POSIX. These functions were actually added in the 2008 edition (as indicated in the header comments). This patch fixes the header conditionals. This fixes some linknamespace test failures because psiginfo uses fmemopen, which is also new in the 2008 edition, so before the header fix this appeared to the linknamespace tests as a 2001 function bringing in references to a 2008 function. The problem also appeared in conformtest header namespace test results (the conformtest data has correct conditionals for when these functions should be visible), but the affected headers still have other namespace problems so this doesn't fix any of those XFAILs. Tested for x86_64 and x86 (testsuite, and that installed stripped shared libraries are unchanged by the patch). [BZ #18483] * signal/signal.h [__USE_XOPEN2K] (psignal): Change condition to [__USE_XOPEN2K8]. Remove redundant #endif. [__USE_XOPEN2K] (psiginfo): Change condition to [__USE_XOPEN2K8]. Remove redundant #if. * conform/Makefile (test-xfail-XOPEN2K/signal.h/linknamespace): Remove variable. (test-xfail-XOPEN2K/sys/wait.h/linknamespace): Likewise. (test-xfail-XOPEN2K/ucontext.h/linknamespace): Likewise.
* Fix regex wctype namespace (bug 18495).Joseph Myers2015-06-057-8/+28
| | | | | | | | | | | | | | | | | | | | | | | | | | regcomp brings in references to various wctype functions that aren't in all the standards including regcomp. This patch fixes this in the usual way by using the __* versions of these functions (which already exist, but some didn't have libc_hidden_proto / libc_hidden_def before). Tested for x86_64 and x86 (testsuite, and that installed stripped shared libraries are unchanged by the patch). (Other wide character function references from the regex code mean that this patch by itself doesn't fix any XFAILed linknamespace test failures; further patches will be needed for that.) [BZ #18495] * wctype/wcfuncs.c (__iswalnum): Use libc_hidden_def. (__iswlower): Likewise. * include/wctype.h (__iswalnum): Declare. Use libc_hidden_proto. (__iswlower): Likewise. * posix/regcomp.c (re_compile_fastmap_iter): Call __towlower instead of towlower. * posix/regex_internal.c (build_wcs_upper_buffer): Call __iswlower instead of iswlower. Call __towupper instead of towupper. * posix/regex_internal.h (IS_WIDE_WORD_CHAR): Call __iswalnum instead of iswalnum.
* Commit 7fe9e2e089f4990b7d18d0798f591ab276b15f2b fixes [BZ# 17322]Florian Weimer2015-06-052-10/+11
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* Avoid outputting to TTY after an expected memory corruption in testcaseTulio Magno Quites Machado Filho2015-06-053-16/+32
| | | | | | Protect TTY against an expected memory corruption from testcase tst-malloc-backtrace, which is expected to SIGABRT after a forced memory corruption.
* posix_fallocate: Emulation fixes and documentation [BZ #15661]Florian Weimer2015-06-054-38/+199
| | | | | | | | Handle signed integer overflow correctly. Detect and reject O_APPEND. Document drawbacks of emulation. This does not completely address bug 15661, but improves the situation somewhat.
* nptl: Rewrite cancellation macrosAdhemerval Zanella2015-06-0474-1161/+303
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch changes the way cancellation entrypoints are defined to instead call the macro SYSCALL_CANCEL. An usual cnacellation definition is defined as: if (SINGLE_THREAD_P) return INLINE_SYSCALL (syscall, NARGS, args...) int oldtype = LIBC_CANCEL_ASYNC (); return INLINE_SYSCALL (syscall, NARGS, args...) LIBC_CANCEL_RESET (oldtype); And it is rewrited as just: SYSCALL_CANCEL (syscall, args...) The idea is to remove LIBC_CANCEL_ASYNC/LIBC_CANCEL_RESET explicit usage. Tested on i386, x86_64, powerpc32, powerpc64le, arm, and aarch64. * sysdeps/unix/sysdep.h [SYSCALL_CANCEL]: New macro: define cancellable syscalls. (SYS_ify): Add guard to no redefine it. (INLINE_SYSCALL): Likewise. * sysdeps/unix/sysv/linux/accept4.c (accept4): Remove LIBC_CANCEL_ASYNC/INLINE_SYSCALL/LIBC_CANCEL_RESET and use SYSCALL_CANCEL instead. * sysdeps/unix/sysv/linux/alpha/fdatasync.c (__fdatasync): Likewise. * sysdeps/unix/sysv/linux/arm/pread.c (__libc_pread): Likewise. * sysdeps/unix/sysv/linux/arm/pread64.c (__libc_pread64): Likewise. * sysdeps/unix/sysv/linux/arm/pwrite.c (__libc_pwrite): Likewise. * sysdeps/unix/sysv/linux/arm/pwrite64.c (__libc_pwrite64): Likewise. * sysdeps/unix/sysv/linux/epoll_pwait.c (epoll_pwait): Likewise. * sysdeps/unix/sysv/linux/fallocate.c (fallocate): Likewise. * sysdeps/unix/sysv/linux/fallocate64.c (fallocate64): Likewise. * sysdeps/unix/sysv/linux/generic/open.c (__libc_open): Likewise. * sysdeps/unix/sysv/linux/generic/open64.c (__libc_open64): Likewise. * sysdeps/unix/sysv/linux/generic/pause.c (__libc_pause): Likewise. * sysdeps/unix/sysv/linux/generic/poll.c (__poll): Likewise. * sysdeps/unix/sysv/linux/generic/recv.c (__libc_recv): Likewise. * sysdeps/unix/sysv/linux/generic/select.c (__select): Likewise. * sysdeps/unix/sysv/linux/generic/send.c (__libc_send): Likewise. * sysdeps/unix/sysv/linux/generic/wordsize-32/pread.c (__libc_pread): Likewise. * sysdeps/unix/sysv/linux/generic/wordsize-32/pread64.c (__libc_pread64): Likewise. * sysdeps/unix/sysv/linux/generic/wordsize-32/preadv.c (__libc_preadv): Likewise. * sysdeps/unix/sysv/linux/generic/wordsize-32/preadv64.c (__libc_readv64): Likewise. * sysdeps/unix/sysv/linux/generic/wordsize-32/pwrite.c (__libc_pwrite): Likewise. * sysdeps/unix/sysv/linux/generic/wordsize-32/pwrite64.c (__libc_pwrite64): Likewise. * sysdeps/unix/sysv/linux/generic/wordsize-32/pwritev.c (__libc_pwritev): Likewise. * sysdeps/sysv/linux/generic/wordsize-32/pwritev64.c (__libc_pwritev64): Likewise. * sysdeps/unix/sysv/linux/i386/fcntl.c (__libc_fcntl): Likewise. * sysdeps/unix/sysv/linux/mips/mips32/sync_file_range.c (sync_file_range): Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n32/fallocate.c (fallocate): Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n32/fallocate64.c (fallocate64): Likewise. * sysdeps/unix/sysv/linux/mips/pread.c (__libc_pread): Likewise. * sysdeps/unix/sysv/linux/mips/pread64.c (__libc_pread64): Likewise. * sysdeps/unix/sysv/linux/mips/pwrite.c (__libc_pwrite): Likewise. * sysdeps/unix/sysv/linux/mips/pwrite64.c (__libc_pwrite64): Likewise. * sysdeps/unix/sysv/linux/msgrcv.c (__libc_msgrcv): Likewise. * sysdeps/unix/sysv/linux/msgsnd.c (__libc_msgsnd): Likewise. * sysdeps/unix/sysv/linux/open64.c (__libc_open64): Likewise. * sysdeps/unix/sysv/linux/openat.c (__libc_openat): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/pread.c (__libc_pread): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/pread64.c (__libc_read64): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/pwrite.c (__libc_write): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/pwrite64.c (__libc_write64): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/fcntl.c (__libc_fcntl): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/pread.c (__libc_pread): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/pread64.c (__libc_pread64): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/pwrite.c (__libc_pwrite): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/pwrite64.c (__libc_pwrite64): Likewise. * sysdeps/sysv/linux/powerpc/powerpc64/sync_file_range.c (sync_file_range): Likewise. * sysdeps/unix/sysv/linux/ppoll.c (ppoll): Likewise. * sysdeps/unix/sysv/linux/pread.c (__libc_pread): Likewise. * sysdeps/unix/sysv/linux/pread64.c (__libc_pread64): Likewise. * sysdeps/unix/sysv/linux/preadv.c (__libc_preadv): Likewise. * sysdeps/unix/sysv/linux/pselect.c (__pselect): Likewise. * sysdeps/unix/sysv/linux/pwrite.c (__libc_pwrite): Likewise. * sysdeps/unix/sysv/linux/pwrite64.c (__libc_pwrite64): Likewise. * sysdeps/unix/sysv/linux/pwritev.c (PWRITEV): Likewise. * sysdeps/unix/sysv/linux/readv.c (__libc_readv): Likewise. * sysdeps/unix/sysv/linux/recvmmsg.c (recvmmsg): Likewise. * sysdeps/unix/sysv/linux/sendmmsg.c (sendmmsg): Likewise. * sysdeps/unix/sysv/linux/sh/pread.c (__libc_pread): Likewise. * sysdeps/unix/sysv/linux/sh/pread64.c (__libc_pread64): Likewise. * sysdeps/unix/sysv/linux/sh/pwrite.c (__libc_pwrite): Likewise. * sysdeps/unix/sysv/linux/sh/pwrite64.c (__libc_pwrite64): Likewise. * sysdeps/unix/sysv/linux/sigsuspend.c (__sigsuspend): Likewise. * sysdeps/unix/sysv/linux/sigtimedwait.c (__sigtimedwait): Likewise. * sysdeps/unix/sysv/linux/sigwaitinfo.c (__sigwaitinfo): Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/msgrcv.c (__libc_msgrcv): Likewise. * sysdeps/unix/sysv/linux/sync_file_range.c (sync_file_range): Likewise. * sysdeps/unix/sysv/linux/tcdrain.c (__libc_tcdrain): Likewise. * sysdeps/unix/sysv/linux/timer_routines.c (timer_helper_thread): Likewise. * sysdeps/unix/sysv/linux/wait.c (__libc_wait): Likewise. * sysdeps/unix/sysv/linux/waitid.c (__waitid): Likewise. * sysdeps/unix/sysv/linux/waitpid.c (__libc_waitpid): Likewise. * sysdeps/unix/sysv/linux/wordsize-64/fallocate.c (fallocate): Likewise. * sysdeps/unix/sysv/linux/wordsize-64/preadv.c (preadv): Likewise. * sysdeps/unix/sysv/linux/wordsize-64/pwritev.c (pwritev): Likewise. * sysdeps/unix/sysv/linux/writev.c (__libc_writev): Likewise. * sysdeps/unix/sysv/linux/x86_64/recv.c (__libc_recv): Likewise. * sysdeps/unix/sysv/linux/x86_64/send.c (__libc_send): Likewise.
* ARM: VDSO supportNathan Lynch2015-06-046-0/+99
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Beginning with the upcoming 4.1 release, Linux on a subset of 32-bit ARM hardware will provide fast user-space implementations of the following system calls: - gettimeofday - clock_gettime The kernel implementation depends on the ARMv7 Generic Timers Extension to accelerate these system calls. So CPUs such as Cortex-A15 and -A7 benefit, while Cortex-A9, -A8, and pre-v7 CPUs do not. On systems where the VDSO does not provide any speedup, the kernel prevents the relevant symbol lookups from succeeding. On OMAP5 (Cortex-A15) gettimeofday latency decreases from ~350ns to ~120ns. On BeagleBone Black (Cortex-A8) it goes from ~650ns to ~660ns, which to my mind is an acceptable cost. Verified that no new test failures are introduced on kernels with and without the VDSO. * sysdeps/unix/sysv/linux/arm/Makefile: (sysdep_routines): Include dl-vdso. * sysdeps/unix/sysv/linux/arm/init-first.c: New file: Use VDSO routines for gettimeofday, clock_gettime if available. * sysdeps/unix/sysv/linux/arm/libc-vdso.h: New file: Declare VDSO symbols. * sysdeps/unix/sysv/linux/arm/sysdep.h: [HAVE_GETTIMEOFDAY_VSYSCALL]: Define. [HAVE_CLOCK_GETTIME_VSYSCALL]: Define. * sysdeps/unix/sysv/linux/arm/Versions: Add __vdso_clock_gettime.
* Use inline syscalls for non-cancellable versionsAdhemerval Zanella2015-06-043-34/+60
| | | | | | This patch uses inline calls (through INLINE_SYSCALL macro) to define the non-cancellable functions macros to avoid use of the syscall_nocancel entrypoint.
* Fix missing wake-ups in pthread_rwlock_rdlock.Torvald Riegel2015-06-049-18/+297
| | | | | | | | | This adds wake-ups that would be missing if assuming that for a non-writer-preferring rwlock, if one thread has acquired a rdlock and does not release it, another thread will eventually acquire a rdlock too despite concurrent write lock acquisition attempts. BZ 14958 is about supporting this assumption. Strictly speaking, this isn't a valid test case, but nonetheless worth supporting (see comment 7 of BZ 14958).
* Fix lost wake-up when pthread_rwlock_timedrwlock times out.Torvald Riegel2015-06-045-2/+146
| | | | | | | | | | If we set up a rwlock to prefer writers (and disallow recursive rdlock acquisitions), then readers will block for writers that are blocked to acquire the lock (otherwise, readers could constantly enter and exit, and the writer would never get the lock). However, the existing implementation did not wake such readers when the writer timed out. This patch adds the missing wake-up. There's no similar case for writers being blocked on readers.
* NaCl: Implement nacl_interface_ext_supply entry point.Roland McGrath2015-06-036-2/+107
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* Replace finite with isfinite.Wilco Dijkstra2015-06-034-3/+10
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* This patch renames all uses of __isinf*, __isnan*, __finite* and __signbit* ↵Wilco Dijkstra2015-06-0390-175/+268
| | | | to use standard C99 macros. This has no effect on generated code.
* Fix fnmatch strnlen namespace (bug 18470).Joseph Myers2015-06-034-14/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | fnmatch brings in references to strnlen, which isn't in all the standards that contain fnmatch (not added until the 2008 edition of POSIX), resulting in linknamespace test failures. (This is contrary to glibc conventions, rather than a standards conformance issue, because of the str* reservation.) This patch fixes this in the usual way, using __strnlen instead of strnlen. Tested for x86_64 and x86 (testsuite, and that installed stripped shared libraries are unchanged by the patch). [BZ #18470] * posix/fnmatch.c (fnmatch) [_LIBC]: Call __strnlen instead of strnlen. * conform/Makefile (test-xfail-XPG3/fnmatch.h/linknamespace): Remove variable. (test-xfail-XPG4/fnmatch.h/linknamespace): Likewise. (test-xfail-POSIX/fnmatch.h/linknamespace): Likewise. (test-xfail-POSIX/glob.h/linknamespace): Likewise. (test-xfail-POSIX/wordexp.h/linknamespace): Likewise. (test-xfail-UNIX98/fnmatch.h/linknamespace): Likewise. (test-xfail-UNIX98/glob.h/linknamespace): Likewise. (test-xfail-UNIX98/wordexp.h/linknamespace): Likewise. (test-xfail-XOPEN2K/fnmatch.h/linknamespace): Likewise. (test-xfail-XOPEN2K/glob.h/linknamespace): Likewise. (test-xfail-XOPEN2K/wordexp.h/linknamespace): Likewise.
* Fix fnmatch wmemchr namespace (bug 18468).Joseph Myers2015-06-035-5/+19
| | | | | | | | | | | | | | | | | fnmatch brings in references to wmemchr, which isn't in all the standards that contain fnmatch, resulting in linknamespace test failures. This patch fixes this in the usual way, making wmemchr into a weak alias for __wmemchr. Tested for x86_64 and x86 (testsuite, and that disassembly of installed shared libraries is unchanged by the patch). [BZ #18468] * wcsmbs/wmemchr.c (wmemchr): Rename to __wmemchr and define as weak alias of __wmemchr. Use libc_hidden_weak. * include/wchar.h (__wmemchr): Declare. Use libc_hidden_proto. * posix/fnmatch.c [HANDLE_MULTIBYTE] (MEMCHR): Use __wmemchr instead of wmemchr.
* BZ#18383: Another test case, with TLS refs and defs in separate TUs.Roland McGrath2015-06-025-3/+125
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* Use better variable names in MIPS syscall macros.Joseph Myers2015-06-024-16/+25
| | | | | | | | | | | | | | | | | | | | | | | | Carlos noted in <https://sourceware.org/ml/libc-alpha/2015-05/msg00680.html> that various ports use potentially problematic short variables names in their syscall macros, which could shadow variables with the same name from containing scopes. This patch fixes variables called err and ret in MIPS macros. (I left result_var and _sys_result - separate variables in different macros, which need separate names - alone.) Tested for mips64 (all three ABIs) that installed stripped shared libraries are unchanged by this patch. * sysdeps/unix/sysv/linux/mips/mips32/sysdep.h (INLINE_SYSCALL): Use variable name _sc_err instead of err. [__mips16] (INTERNAL_SYSCALL_NCS): Use variable name _sc_ret instead of ret. * sysdeps/unix/sysv/linux/mips/mips64/n32/sysdep.h (INLINE_SYSCALL): Use variable name _sc_err instead of err. * sysdeps/unix/sysv/linux/mips/mips64/n64/sysdep.h (INLINE_SYSCALL): Likewise.
* Use libc_hidden_proto / libc_hidden_def with __strnlen.Joseph Myers2015-06-029-2/+28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Various code in glibc uses __strnlen instead of strnlen for namespace reasons. However, __strnlen does not use libc_hidden_proto / libc_hidden_def (as is normally done for any function defined and called within the same library, whether or not exported from the library and whatever namespace it is in), so the compiler does not know that those calls are to a function within libc. This patch uses libc_hidden_proto / libc_hidden_def with __strnlen. On x86_64, it makes no difference to the installed stripped shared libraries. On 32-bit x86, it causes __strnlen calls to go to the same place as strnlen calls (the fallback strnlen implementation), rather than through a PLT entry for the strnlen IFUNC; I'm not sure of the logic behind when calls from within libc should use IFUNCs versus when they should go direct to a particular function implementation, but clearly it doesn't make sense for strnlen and __strnlen to be handled differently in this regard. Tested for x86_64 and x86 (testsuite, and comparison of installed shared libraries as described above). * string/strnlen.c [!STRNLEN] (__strnlen): Use libc_hidden_def. * include/string.h (__strnlen): Use libc_hidden_proto. * sysdeps/aarch64/strnlen.S (__strnlen): Use libc_hidden_def. * sysdeps/i386/i686/multiarch/strnlen-c.c [SHARED] (libc_hidden_def): Define __GI___strnlen as well as __GI_strnlen. * sysdeps/powerpc/powerpc32/power4/multiarch/strnlen-power7.S (libc_hidden_def): Undefine and redefine. * sysdeps/powerpc/powerpc32/power4/multiarch/strnlen-ppc32.c [SHARED] (libc_hidden_def): Define __GI___strnlen as well as __GI_strnlen. * sysdeps/powerpc/powerpc32/power7/strnlen.S (__strnlen): Use libc_hidden_def. * sysdeps/tile/tilegx/strnlen.c (__strnlen): Likewise.
* Fix fnmatch towlower namespace (bug 18469).Joseph Myers2015-06-025-6/+26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | fnmatch brings in references to towlower (and thereby towupper), which isn't in all the standards that contain fnmatch, resulting in linknamespace test failures. (This is contrary to glibc conventions, rather than a standards conformance issue, because of the to* reservation.) This patch fixes this in the usual way, making those functions into weak aliases. Tested for x86_64 and x86 (testsuite, and that disassembly of installed shared libraries is unchanged by the patch). This is on top of <https://sourceware.org/ml/libc-alpha/2015-06/msg00019.html>, but the two patches should be independent. (The __attribute_pure__ on the declarations in include/wctype.h comes from GCC's built-in attributes for towlower and towupper, and is needed to get the same code generation for fnmatch before and after the patch. It seems likely there are cases where the declaration of __foo in the internal headers is missing attributes from foo in the public headers, built-in to GCC or both, but I don't know a good way to detect such missing attributes.) [BZ #18469] * wctype/wcfuncs.c (towlower): Rename to __towlower and define as weak alias of __towlower. Use libc_hidden_weak. (towupper): Rename to __towupper and define as weak alias of __towupper. Use libc_hidden_weak. * include/wctype.h (__towlower): Declare. Use libc_hidden_proto. (__towupper): Likewise. * posix/fnmatch.c [HANDLE_MULTIBYTE && _LIBC] (FOLD): Use __towlower instead of towlower.
* Fix setenv.c diagnostic pragma to be compatible with GCC 4.6Roland McGrath2015-06-022-1/+10
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* 2015-06-02 Szabolcs Nagy <szabolcs.nagy@arm.com>Wilco Dijkstra2015-06-022-26/+30
| | | | * sysdeps/aarch64/libm-test-ulps: Update.
* x86: clock_gettime and timespec_get vDSO cleanupAdhemerval Zanella2015-06-016-63/+21
| | | | | This patch removes the x86 specific timespec_get and clock_gettime implementation to use generic HAVE_CLOCK_GETTIME_VSYSCALL way.
* Fix ChangeLog entryAdhemerval Zanella2015-06-011-5/+5
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* BZ #18116: Mark fixed in NEWS.Tulio Magno Quites Machado Filho2015-06-011-4/+4
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* powerpc: setcontext.S uses power6 mtfsf when not supported [BZ #18116]Martin Sebor2015-06-013-14/+61
| | | | | | | | | | | | | The attached patch fixes a glibc build failure with gcc 5 on powerpc64le caused by a recent change in gcc where the compiler defines the _ARCH_PWR6 macro when processing assembly files but doesn't invoke the assembler in the corresponding machine mode (unless it has been explicitly configured to target POWER 6 or later). A bug had been filed with gcc for this (65341) but was closed as won't fix. Glibc relies on the _ARCH_PWR6 macro in a few .S files to make use of Power ISA 2.5 instructions (specifically, the four-argument form of the mtfsf insn). A similar problem had occurred in the past (bug 10118) but the fix that was committed for it didn't anticipate this new problem.
* benchtest: script to compare two benchmarksSiddhesh Poyarekar2015-06-013-0/+286
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This script is a sample implementation that uses import_bench to construct two benchmark objects and compare them. If detailed timing information is available (when one does `make DETAILED=1 bench`), it writes out graphs for all functions it benchmarks and prints significant differences in timings of the two benchmark runs. If detailed timing information is not available, it points out significant differences in aggregate times. Call this script as follows: compare_bench.py schema_file.json bench1.out bench2.out Alternatively, if one wants to set a different threshold for warnings (default is a 10% difference): compare_bench.py schema_file.json bench1.out bench2.out 25 The threshold in the example above is 25%. schema_file.json is the JSON schema (which is $srcdir/benchtests/scripts/benchout.schema.json for the benchmark output file) and bench1.out and bench2.out are the two benchmark output files to compare. The key functionality here is the compress_timings function which groups together points that are close together into a single point that is the mean of all its representative points. Any point in such a group is at most 1.5x the smallest point in that group. The detailed derivation is a comment in the function. * benchtests/scripts/compare_bench.py: New file. * benchtests/scripts/import_bench.py (mean): New function. (split_list): Likewise. (do_for_all_timings): Likewise. (compress_timings): Likewise.
* New module to import and process benchmark outputSiddhesh Poyarekar2015-06-013-25/+79
| | | | | | | | | | | | | | | This is the beginning of a module to import and process benchmark outputs. The module currently supports importing of a bench.out and validating it against a schema file. In future this could grow a set of routines that benchmark consumers may find useful to build their own analysis tools. I have altered validate_bench to use this module too. * benchtests/scripts/import_bench.py: New file. * benchtests/scripts/validate_benchout.py: Import import_bench instead of jsonschema. (validate_bench): Remove function. (main): Use import_bench.
* * resolv/res_hconf.c (_res_hconf_reorder_addrs): Use a union toSteve Ellcey2015-06-012-4/+15
| | | | copy data from cur_ifr->ifr_addr and cur_ifr->ifr_netmask.
* Update powerpc-fpu libm-test-ulps.Adhemerval Zanella2015-05-292-516/+454
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* NaCl: Make thread exit wake pthread_join.Roland McGrath2015-05-285-2/+164
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* NaCl: Fix lll_futex_timed_wait timeout calculation.Roland McGrath2015-05-282-12/+17
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