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* Refactor strtod parsing of NaN payloads.Joseph Myers2015-11-2428-95/+504
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The nan* functions handle their string argument by constructing a NAN(...) string on the stack as a VLA and passing it to strtod functions. This approach has problems discussed in bug 16961 and bug 16962: the stack usage is unbounded, and it gives incorrect results in certain cases where the argument is not a valid n-char-sequence. The natural fix for both issues is to refactor the NaN payload parsing out of strtod into a separate function that the nan* functions can call directly, so that no temporary string needs constructing on the stack at all. This patch does that refactoring in preparation for fixing those bugs (but without actually using the new functions from nan* - which will also require exporting them from libc at version GLIBC_PRIVATE). This patch is not intended to change any user-visible behavior, so no tests are added (fixes for the above bugs will of course add tests for them). This patch builds on my recent fixes for strtol and strtod issues in Turkish locales. Given those fixes, the parsing of NaN payloads is locale-independent; thus, the new functions do not need to take a locale_t argument. Tested for x86_64, x86, mips64 and powerpc. * stdlib/strtod_nan.c: New file. * stdlib/strtod_nan_double.h: Likewise. * stdlib/strtod_nan_float.h: Likewise. * stdlib/strtod_nan_main.c: Likewise. * stdlib/strtod_nan_narrow.h: Likewise. * stdlib/strtod_nan_wide.h: Likewise. * stdlib/strtof_nan.c: Likewise. * stdlib/strtold_nan.c: Likewise. * sysdeps/ieee754/ldbl-128/strtod_nan_ldouble.h: Likewise. * sysdeps/ieee754/ldbl-128ibm/strtod_nan_ldouble.h: Likewise. * sysdeps/ieee754/ldbl-96/strtod_nan_ldouble.h: Likewise. * wcsmbs/wcstod_nan.c: Likewise. * wcsmbs/wcstof_nan.c: Likewise. * wcsmbs/wcstold_nan.c: Likewise. * stdlib/Makefile (routines): Add strtof_nan, strtod_nan and strtold_nan. * wcsmbs/Makefile (routines): Add wcstod_nan, wcstold_nan and wcstof_nan. * include/stdlib.h (__strtof_nan): Declare and use libc_hidden_proto. (__strtod_nan): Likewise. (__strtold_nan): Likewise. (__wcstof_nan): Likewise. (__wcstod_nan): Likewise. (__wcstold_nan): Likewise. * include/wchar.h (____wcstoull_l_internal): Declare. * stdlib/strtod_l.c: Do not include <ieee754.h>. (____strtoull_l_internal): Remove declaration. (STRTOF_NAN): Define macro. (SET_MANTISSA): Remove macro. (STRTOULL): Likewise. (____STRTOF_INTERNAL): Use STRTOF_NAN to parse NaN payload. * stdlib/strtof_l.c (____strtoull_l_internal): Remove declaration. (STRTOF_NAN): Define macro. (SET_MANTISSA): Remove macro. * sysdeps/ieee754/ldbl-128/strtold_l.c (STRTOF_NAN): Define macro. (SET_MANTISSA): Remove macro. * sysdeps/ieee754/ldbl-128ibm/strtold_l.c (STRTOF_NAN): Define macro. (SET_MANTISSA): Remove macro. * sysdeps/ieee754/ldbl-64-128/strtold_l.c (STRTOF_NAN): Define macro. (SET_MANTISSA): Remove macro. * sysdeps/ieee754/ldbl-96/strtold_l.c (STRTOF_NAN): Define macro. (SET_MANTISSA): Remove macro. * wcsmbs/wcstod_l.c (____wcstoull_l_internal): Remove declaration. * wcsmbs/wcstof_l.c (____wcstoull_l_internal): Likewise. * wcsmbs/wcstold_l.c (____wcstoull_l_internal): Likewise.
* Fix strtod ("NAN(I)") in Turkish locales (bug 19266).Joseph Myers2015-11-247-4/+165
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The implementations of strtod and related functions use locale-specific conversions to lower case when parsing the contents of a string NAN(n-char-sequence_opt). This has the consequence that NAN(I) is not treated as being of that form (only the initial NAN part is accepted). The syntax of n-char-sequence directly maps to the ASCII letters, digits and underscore as in identifiers, so it is unambiguous that all ASCII letters must be accepted in all locales. This patch, relative to a tree with <https://sourceware.org/ml/libc-alpha/2015-11/msg00258.html> (pending review) applied and depending on that patch, fixes this problem by checking directly for ASCII letters. This will have the side effect of no longer accepting 'İ' (dotted 'I') inside NAN() in Turkish locales, which seems appropriate (that letter wouldn't have been interpreted as having any meaning in the NaN payload anyway, as not acceptable to strtoull). Tested for x86_64 and x86. [BZ #19266] * stdlib/strtod_l.c (____STRTOF_INTERNAL): Check directly for upper case and lower case letters inside NAN(), not using TOLOWER. * stdlib/tst-strtod-nan-locale-main.c: New file. * stdlib/tst-strtod-nan-locale.c: Likewise. * stdlib/Makefile (tests): Add tst-strtod-nan-locale. [$(run-built-tests) = yes] ($(objpfx)tst-strtod-nan-locale.out): Depend on $(gen-locales). ($(objpfx)tst-strtod-nan-locale): Depend on $(libm). * wcsmbs/tst-wcstod-nan-locale.c: New file. * wcsmbs/Makefile (tests): Add tst-wcstod-nan-locale. [$(run-built-tests) = yes] ($(objpfx)tst-wcstod-nan-locale.out): Depend on $(gen-locales). ($(objpfx)tst-wcstod-nan-locale): Depend on $(libm).
* misc/tst-tsearch.c: bump up TIMEOUT to 10 seconds.Chris Metcalf2015-11-242-0/+3
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* tile: define __NO_LONG_DOUBLE_MATHChris Metcalf2015-11-248-0/+32
| | | | | | | | This avoids build failures in the tests, and matches what is in bits/mathdef.h. Update the libc and libm abilist files to include __finitel, __isinfl, and __isnanl.
* malloc: remove redundant getenv callGleb Fotengauer-Malinovskiy2015-11-242-2/+7
| | | | * malloc/memusage.c (me): Remove redundant getenv call.
* Remove CPU set size checking from affinity functions [BZ #19143]Florian Weimer2015-11-2417-218/+1006
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With current kernel versions, the check does not reliably detect that unavailable CPUs are requested, for these reasons: (1) The kernel will silently ignore non-allowed CPUs, that is, CPUs which are physically present but disallowed for the thread based on system configuration. (2) Similarly, CPU bits which lack an online CPU (possible CPUs) are ignored. (3) The existing probing code assumes that the CPU mask size is a power of two and at least 1024. Neither has it to be a power of two, nor is the minimum possible value 1024, so the value determined is often too large. This means that the CPU set size check in glibc accepts CPU bits beyond the actual hard system limit. (4) Future kernel versions may not even have a fixed CPU set size. After the removal of the probing code, the kernel still returns EINVAL if no CPU in the requested set remains which can run the thread after the affinity change. Applications which care about the exact affinity mask will have to query it using sched_getaffinity after setting it. Due to the effects described above, this commit does not change this. The new tests supersede tst-getcpu, which is removed. This addresses bug 19164 because the new tests allocate CPU sets dynamically. * nptl/check-cpuset.h: Remove. * nptl/pthread_attr_setaffinity.c (__pthread_attr_setaffinity_new): Remove CPU set size check. * nptl/pthread_setattr_default_np.c (pthread_setattr_default_np): Likewise. * sysdeps/unix/sysv/linux/check-cpuset.h: Remove. * sysdeps/unix/sysv/linux/pthread_setaffinity.c (__kernel_cpumask_size, __determine_cpumask_size): Remove. (__pthread_setaffinity_new): Remove CPU set size check. * sysdeps/unix/sysv/linux/sched_setaffinity.c (__kernel_cpumask_size): Remove. (__sched_setaffinity_new): Remove CPU set size check. * manual/threads.texi (Default Thread Attributes): Remove stale reference to check_cpuset_attr, determine_cpumask_size in comment. * sysdeps/unix/sysv/linux/Makefile [$(subdir) == posix] (tests): Remove tst-getcpu. Add tst-affinity, tst-affinity-pid. [$(subdir) == nptl] (tests): Add tst-thread-affinity-pthread, tst-thread-affinity-pthread2, tst-thread-affinity-sched. * sysdeps/unix/sysv/linux/tst-affinity.c: New file. * sysdeps/unix/sysv/linux/tst-affinity-pid.c: New file. * sysdeps/unix/sysv/linux/tst-skeleton-affinity.c: New skeleton test file. * sysdeps/unix/sysv/linux/tst-thread-affinity-sched.c: New file. * sysdeps/unix/sysv/linux/tst-thread-affinity-pthread.c: New file. * sysdeps/unix/sysv/linux/tst-thread-affinity-pthread2.c: New file. * sysdeps/unix/sysv/linux/tst-thread-skeleton-affinity.c: New skeleton test file. * sysdeps/unix/sysv/linux/tst-getcpu.c: Remove. Superseded by tst-affinity-pid.
* Implement "make update-all-abi"Florian Weimer2015-11-245-1/+106
| | | | | | | | * scripts/update-abilist.sh: New file. * Makefile (+subdir_targets): Add subdir_update-all-abi. * Makerules (update-all-abi-%, update-all-abi) (subdir_update-all-abi): New targets. * elf/Makefile (update-all-abi): New target.
* Replace MUTEX_INITIALIZER with _LIBC_LOCK_INITIALIZER in generic codeFlorian Weimer2015-11-247-5/+16
| | | | | | | | | | * sysdeps/mach/hurd/libc-lock.h (_LIBC_LOCK_INITIALIZER): Define. (__libc_lock_define_initialized): Use it. * sysdeps/nptl/libc-lockP.h (_LIBC_LOCK_INITIALIZER): Define. * malloc/arena.c (list_lock): Use _LIBC_LOCK_INITIALIZER. * malloc/malloc.c (main_arena): Likewise. * sysdeps/generic/malloc-machine.h (MUTEX_INITIALIZER): Remove. * sysdeps/nptl/malloc-machine.h (MUTEX_INITIALIZER): Remove.
* Update <sys/ptrace.h> for Linux 4.3.Joseph Myers2015-11-238-7/+42
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch updates <sys/ptrace.h> for Linux 4.3, adding PTRACE_O_SUSPEND_SECCOMP and updating the value of PTRACE_O_MASK. Some architectures were missing the older PTRACE_O_EXITKILL, so that was added to the files missing it as well. Tested for x86_64 (testsuite, and that installed shared libraries are unchanged by the patch). * sysdeps/unix/sysv/linux/aarch64/sys/ptrace.h (PTRACE_O_EXITKILL): New value in enum __ptrace_setoptions. (PTRACE_O_SUSPEND_SECCOMP): Likewise. (PTRACE_O_MASK): Update value. * sysdeps/unix/sysv/linux/ia64/sys/ptrace.h (PTRACE_O_EXITKILL): New value in enum __ptrace_setoptions. (PTRACE_O_SUSPEND_SECCOMP): Likewise. (PTRACE_O_MASK): Update value. * sysdeps/unix/sysv/linux/powerpc/sys/ptrace.h (PTRACE_O_SUSPEND_SECCOMP): New value in enum __ptrace_setoptions. (PTRACE_O_MASK): Update value. * sysdeps/unix/sysv/linux/s390/sys/ptrace.h (PTRACE_O_SUSPEND_SECCOMP): New value in enum __ptrace_setoptions. (PTRACE_O_MASK): Update value. * sysdeps/unix/sysv/linux/sparc/sys/ptrace.h (PTRACE_O_SUSPEND_SECCOMP): New value in enum __ptrace_setoptions. (PTRACE_O_MASK): Update value. * sysdeps/unix/sysv/linux/sys/ptrace.h (PTRACE_O_SUSPEND_SECCOMP): New value in enum __ptrace_setoptions. (PTRACE_O_MASK): Update value. * sysdeps/unix/sysv/linux/tile/sys/ptrace.h (PTRACE_O_EXITKILL): New value in enum __ptrace_setoptions. (PTRACE_O_SUSPEND_SECCOMP): Likewise. (PTRACE_O_MASK): Update value.
* Update <netpacket/packet.h> for Linux 4.3.Joseph Myers2015-11-232-0/+36
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In the course of reviewing Linux 4.3 changes for any glibc header updates needed, I found that sysdeps/unix/sysv/linux/netpacket/packet.h was extremely out of date (last updated for Linux 2.3.15, it seems). This patch updates the sets of constants present in that header to include those added to those sets in newer kernels (include/uapi/linux/if_packet.h). Tested for x86_64 (testsuite, and that installed shared libraries are unchanged by the patch). * sysdeps/unix/sysv/linux/netpacket/packet.h (PACKET_COPY_THRESH): New macro. (PACKET_AUXDATA): Likewise. (PACKET_ORIGDEV): Likewise. (PACKET_VERSION): Likewise. (PACKET_HDRLEN): Likewise. (PACKET_RESERVE): Likewise. (PACKET_TX_RING): Likewise. (PACKET_LOSS): Likewise. (PACKET_VNET_HDR): Likewise. (PACKET_TX_TIMESTAMP): Likewise. (PACKET_TIMESTAMP): Likewise. (PACKET_FANOUT): Likewise. (PACKET_TX_HAS_OFF): Likewise. (PACKET_QDISC_BYPASS): Likewise. (PACKET_ROLLOVER_STATS): Likewise. (PACKET_FANOUT_DATA): Likewise. (PACKET_MR_UNICAST): Likewise.
* Fix strtol in Turkish locales (bug 19242).Joseph Myers2015-11-237-8/+168
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The implementations of strtol and related functions use locale-specific conversions to upper case before determining whether a character is a valid letter in the argument. This means that in Turkish locales such as tr_TR.UTF-8 and tr_TR.ISO-8859-9, "i" is interpreted as not being a valid number, when if the base passed to strtol is 19 or more it should be interpreted as the number 18. ISO C explicitly says "The letters from a (or A) through z (or Z) are ascribed the values 10 through 35", so clearly intends the standard ASCII letters (otherwise you wouldn't generally have exactly 26 letters to ascribe such values) (whereas white-space must be identified according to the locale). In particular, 'i' and 'I' must be understood to be in that sequence. This patch makes the code do the case conversions and classification in the C locale; the user's locale remains used for whitespace testing (explicitly correct according to ISO C). Note that the way the code worked, the only non-ASCII letter that would previously have been accepted would have been the Turkish 'ı' (dotless 'i'), because the uppercase version of that in Turkish locales is 'I'. This patch means that will no longer be accepted, which seems appropriate. Tested for x86_64 and x86. [BZ #19242] * stdlib/strtol_l.c (ISALPHA): Use _nl_C_locobj_ptr for locale. (TOUPPER): Likewise. * stdlib/tst-strtol-locale-main.c: New file. * stdlib/tst-strtol-locale.c: Likewise. * stdlib/Makefile (tests): Add tst-strtol-locale. [$(run-built-tests) = yes] (LOCALES): Add tr_TR.ISO-8859-9. [$(run-built-tests) = yes] ($(objpfx)tst-strtol-locale.out): Depend on $(gen-locales). * wcsmbs/tst-wcstol-locale.c: New file. * wcsmbs/Makefile (tests): Add tst-wcstol-locale. [$(run-built-tests) = yes] (LOCALES): Add tr_TR.UTF-8 and tr_TR.ISO-8859-9. [$(run-built-tests) = yes] ($(objpfx)tst-wcstol-locale.out): Depend on $(gen-locales).
* NaCl: Use allocate_code_data after dyncode_createRoland McGrath2015-11-202-1/+34
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* Fix math_private.h multiple include guards.Joseph Myers2015-11-209-8/+42
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Various math_private.h headers are guarded by "#ifndef _MATH_PRIVATE_H", but never define the macro. Nothing else defines the macro either (the generic math_private.h that they include defines a different macro, _MATH_PRIVATE_H_), so those guards are ineffective. With the recent inclusion of s_sin.c in s_sincos.c, this breaks the build for MIPS, since the build of s_sincos.c ends up including <math_private.h> twice and the MIPS version defines inline functions such as libc_feholdexcept_mips, without a separate fenv_private.h header with its own guards such as some architectures have. This patch fixes all the problem headers to use architecture-specific guard macro names, and to define those macros in the headers they guard, just as some architectures already do. Tested for x86 (testsuite, and that installed shared libraries are unchanged by the patch), and for mips64 (that it fixes the build). * sysdeps/arm/math_private.h [!_MATH_PRIVATE_H]: Change guard to [!ARM_MATH_PRIVATE_H]. [!ARM_MATH_PRIVATE_H] (ARM_MATH_PRIVATE_H): Define macro. * sysdeps/hppa/math_private.h [!_MATH_PRIVATE_H]: Change guard to [!HPPA_MATH_PRIVATE_H]. [!HPPA_MATH_PRIVATE_H] (HPPA_MATH_PRIVATE_H): Define macro. * sysdeps/i386/fpu/math_private.h [!_MATH_PRIVATE_H]: Change guard to [!I386_MATH_PRIVATE_H]. [!I386_MATH_PRIVATE_H] (I386_MATH_PRIVATE_H): Define macro. * sysdeps/m68k/m680x0/fpu/math_private.h [!_MATH_PRIVATE_H]: Change guard to [!M68K_MATH_PRIVATE_H]. [!M68K_MATH_PRIVATE_H] (M68K_MATH_PRIVATE_H): Define macro. * sysdeps/microblaze/math_private.h [!_MATH_PRIVATE_H]: Change guard to [!MICROBLAZE_MATH_PRIVATE_H]. [!MICROBLAZE_MATH_PRIVATE_H] (MICROBLAZE_MATH_PRIVATE_H): Define macro. * sysdeps/mips/math_private.h [!_MATH_PRIVATE_H]: Change guard to [!MIPS_MATH_PRIVATE_H]. [!MIPS_MATH_PRIVATE_H] (MIPS_MATH_PRIVATE_H): Define macro. * sysdeps/nios2/math_private.h [!_MATH_PRIVATE_H]: Change guard to [!NIO2_MATH_PRIVATE_H]. [!NIO2_MATH_PRIVATE_H] (NIO2_MATH_PRIVATE_H): Define macro. * sysdeps/tile/math_private.h [!_MATH_PRIVATE_H]: Change guard to [!TILE_MATH_PRIVATE_H]. [!TILE_MATH_PRIVATE_H] (TILE_MATH_PRIVATE_H): Define macro.
* Fix lgamma setting signgam for ISO C (bug 15421).Joseph Myers2015-11-2065-204/+721
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The lgamma (and likewise lgammaf, lgammal) function wrongly sets the signgam variable even when building for strict ISO C conformance (-std=c99 / -std=c11), although the user may define such a variable and it's only in the implementation namespace for POSIX with XSI extensions enabled. Following discussions starting at <https://sourceware.org/ml/libc-alpha/2013-04/msg00767.html> and <https://sourceware.org/ml/libc-alpha/2015-10/msg00844.html>, it seems that the safest approach for fixing this particular issue is for signgam to become a weak alias for a newly exported symbol __signgam, with the library functions only setting __signgam, at which point static linker magic will preserve the alias for newly linked binaries that refer to the library's signgam rather than defining their own, while breaking the alias for programs that define their own signgam, with new symbol versions for lgamma functions and with compat symbols for existing binaries that set both signgam and __signgam. This patch implements that approach for the fix. signgam is made into a weak alias. The four symbols __signgam, lgamma, lgammaf, lgammal get new symbol versions at version GLIBC_2.23, with the existing versions of lgamma, lgammaf and lgammal becoming compat symbols. When the compat versions are built, gamma, gammaf and gammal are aliases for the compat versions (i.e. always set signgam); this is OK as they are not ISO C functions, and avoids adding new symbol versions for them unnecessarily. When the compat versions are not built (i.e. for static linking and for future glibc ports), gamma, gammaf and gammal are aliases for the new versions that set __signgam. The ldbl-opt versions are updated accordingly. The lgamma wrappers are adjusted so that the same source files, included from different files with different definitions of USE_AS_COMPAT, can build either the new versions or the compat versions. Similar changes are made to the ia64 versions (untested). Tests are added that the lgamma functions do not interfere with a user variable called signgam for ISO C, with various choices for the size of that variable, whether it is initialized, and for static and dynamic linking. The conformtest whitelist entry is removed as well. Tested for x86_64, x86, mips64 and powerpc, including looking at objdump --dynamic-syms output to make sure the expected sets of symbols were aliases. Also spot-tested that a binary built with old glibc works properly (i.e. gets signgam set) when run with new glibc. [BZ #15421] * sysdeps/ieee754/s_signgam.c (signgam): Rename to __signgam, initialize with 0 and define as weak alias of __signgam. * include/math.h [!_ISOMAC] (__signgam): Declare. * math/Makefile (libm-calls): Add w_lgamma_compat. (tests): Add test-signgam-uchar, test-signgam-uchar-init, test-signgam-uint, test-signgam-uint-init, test-signgam-ullong and test-signgam-ullong-init. (tests-static): Add test-signgam-uchar-static, test-signgam-uchar-init-static, test-signgam-uint-static, test-signgam-uint-init-static, test-signgam-ullong-static and test-signgam-ullong-init-static. (CFLAGS-test-signgam-uchar.c): New variable. (CFLAGS-test-signgam-uchar-init.c): Likewise. (CFLAGS-test-signgam-uchar-static.c): Likewise. (CFLAGS-test-signgam-uchar-init-static.c): Likewise. (CFLAGS-test-signgam-uint.c): Likewise. (CFLAGS-test-signgam-uint-init.c): Likewise. (CFLAGS-test-signgam-uint-static.c): Likewise. (CFLAGS-test-signgam-uint-init-static.c): Likewise. (CFLAGS-test-signgam-ullong.c): Likewise. (CFLAGS-test-signgam-ullong-init.c): Likewise. (CFLAGS-test-signgam-ullong-static.c): Likewise. (CFLAGS-test-signgam-ullong-init-static.c): Likewise. * math/Versions (libm): Add GLIBC_2.23. * math/lgamma-compat.h: New file. * math/test-signgam-main.c: Likewise. * math/test-signgam-uchar-init-static.c: Likewise. * math/test-signgam-uchar-init.c: Likewise. * math/test-signgam-uchar-static.c: Likewise. * math/test-signgam-uchar.c: Likewise. * math/test-signgam-uint-init-static.c: Likewise. * math/test-signgam-uint-init.c: Likewise. * math/test-signgam-uint-static.c: Likewise. * math/test-signgam-uint.c: Likewise. * math/test-signgam-ullong-init-static.c: Likewise. * math/test-signgam-ullong-init.c: Likewise. * math/test-signgam-ullong-static.c: Likewise. * math/test-signgam-ullong.c: Likewise. * math/w_lgamma.c: Rename to w_lgamma_main.c and replace by wrapper of w_lgamma_main.c. * math/w_lgamma_compat.c: New file. * math/w_lgamma_compatf.c: Likewise. * math/w_lgamma_compatl.c: Likewise. * math/w_lgamma_main.c: New file. Based on w_lgamma.c. Include <lgamma-compat.h>. Condition contents on [BUILD_LGAMMA]. Support defining compatibility symbols. (__lgamma): Change to LGFUNC (__lgamma). Use CALL_LGAMMA. * math/w_lgammaf.c: Rename to w_lgammaf_main.c and replace by wrapper of w_lgammaf_main.c. * math/w_lgammaf_main.c: New file. Based on w_lgammaf.c. Include <lgamma-compat.h>. Condition contents on [BUILD_LGAMMA]. Support defining compatibility symbols. (__lgammaf): Change to LGFUNC (__lgammaf). Use CALL_LGAMMA. * math/w_lgammal.c: Rename to w_lgammal_main.c and replace by wrapper of w_lgammal_main.c. * math/w_lgammal_main.c: New file. Based on w_lgammal.c. Include <lgamma-compat.h>. Condition contents on [BUILD_LGAMMA]. Support defining compatibility symbols. (__lgammal): Change to LGFUNC (__lgammal). Use CALL_LGAMMA. * sysdeps/ia64/fpu/lgamma-compat.h: New file. * sysdeps/ia64/fpu/w_lgamma.c: Move to .... * sysdeps/ia64/fpu/w_lgamma_main.c: ...here. Include <lgamma-compat.h>. (__ieee754_lgamma): Change to LGFUNC (lgamma). Use CALL_LGAMMA. (__ieee754_gamma): Define as alias. * sysdeps/ia64/fpu/w_lgammaf.c: Move to .... * sysdeps/ia64/fpu/w_lgammaf_main.c: ...here. Include <lgamma-compat.h>. (__ieee754_lgammaf): Change to LGFUNC (lgammaf). Use CALL_LGAMMA. (__ieee754_gammaf): Define as alias. * sysdeps/ia64/fpu/w_lgammal.c: Move to .... * sysdeps/ia64/fpu/w_lgammal_main.c: ...here. Include <lgamma-compat.h>. (__ieee754_lgammal): Change to LGFUNC (lgammal). Use CALL_LGAMMA. (__ieee754_gammal): Define as alias. * sysdeps/ieee754/ldbl-opt/w_lgamma.c: Move to .... * sysdeps/ieee754/ldbl-opt/w_lgamma_compat.c: ...here. Include <math/w_lgamma_compat.c>. [LONG_DOUBLE_COMPAT(libm, GLIBC_2_0)] (__lgammal_dbl_compat): Define as alias of __lgamma_compat and use in defining lgammal. * sysdeps/ieee754/ldbl-opt/w_lgammal.c: Move to .... * sysdeps/ieee754/ldbl-opt/w_lgamma_compatl.c: ...here. Include <math/lgamma-compat.h> and <math/w_lgamma_compatl.c>. (USE_AS_COMPAT): New macro. (LGAMMA_OLD_VER): Undefine and redefine. (lgammal): Do not define here. (gammal): Only define here if [GAMMA_ALIAS]. * conform/linknamespace.pl (@whitelist): Remove signgam. * sysdeps/nacl/libm.abilist: Update. * sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/arm/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/hppa/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/microblaze/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/nios2/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/sh/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilepro/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
* Remove signal handling for nanosleep (bug 16364)Adhemerval Zanella2015-11-203-158/+6
| | | | | | | | | | | | | | | | | | | | | | Linux 2.6.32 and forward do not show the issue regarding SysV SIGCHLD vs. SIG_IGN for nanosleep which make it feasible to use it for sleep implementation without requiring any hacking to handle the spurious wake up. The issue is likely being fixed before 2.6 and git history [1] [2]. This patch simplifies the sleep code to call nanosleep directly by using the posix default version. It also removes the early cancellation tests for zero argument, since nanosleep will handle cancellation in this case. [1] https://lkml.org/lkml/2004/11/25/5 [2] https://lkml.org/lkml/2003/11/8/50 Checked on x86_64, ppc64le, and aarch64. [BZ #16364] * sysdeps/unix/sysv/linux/sleep.c: Remove file * sysdeps/posix/sleep.c (__sleep): Simplify cancellation handling.
* S390: Use __asm__ instead of asm.Stefan Liebler2015-11-2042-453/+498
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * sysdeps/s390/fpu/bits/mathinline.h: Use __asm__ [__volatile__] instead of asm [volatile]. * sysdeps/s390/abort-instr.h: Likewise. * sysdeps/s390/atomic-machine.h: Likewise. * sysdeps/s390/bits/string.h: Likewise. * sysdeps/s390/dl-tls.h: Likewise. * sysdeps/s390/fpu/e_sqrt.c: Likewise. * sysdeps/s390/fpu/e_sqrtf.c: Likewise. * sysdeps/s390/fpu/e_sqrtl.c: Likewise. * sysdeps/s390/fpu/fesetround.c: Likewise. * sysdeps/s390/fpu/fpu_control.h: Likewise. * sysdeps/s390/fpu/s_fma.c: Likewise. * sysdeps/s390/fpu/s_fmaf.c: Likewise. * sysdeps/s390/memusage.h: Likewise. * sysdeps/s390/multiarch/ifunc-resolve.h: Likewise. * sysdeps/s390/nptl/pthread_spin_lock.c: Likewise. * sysdeps/s390/nptl/pthread_spin_trylock.c: Likewise. * sysdeps/s390/nptl/pthread_spin_unlock.c: Likewise. * sysdeps/s390/nptl/tls.h: Likewise. * sysdeps/s390/s390-32/__longjmp.c: Likewise. * sysdeps/s390/s390-32/backtrace.c: Likewise. * sysdeps/s390/s390-32/dl-machine.h: Likewise. * sysdeps/s390/s390-32/multiarch/memcmp.c: Likewise. * sysdeps/s390/s390-32/stackguard-macros.h: Likewise. * sysdeps/s390/s390-32/tls-macros.h: Likewise. * sysdeps/s390/s390-64/__longjmp.c: Likewise. * sysdeps/s390/s390-64/backtrace.c: Likewise. * sysdeps/s390/s390-64/dl-machine.h: Likewise. * sysdeps/s390/s390-64/iso-8859-1_cp037_z900.c: Likewise. * sysdeps/s390/s390-64/multiarch/memcmp.c: Likewise. * sysdeps/s390/s390-64/stackguard-macros.h: Likewise. * sysdeps/s390/s390-64/tls-macros.h: Likewise. * sysdeps/s390/s390-64/utf16-utf32-z9.c: Likewise. * sysdeps/s390/s390-64/utf8-utf16-z9.c: Likewise. * sysdeps/s390/s390-64/utf8-utf32-z9.c: Likewise. * sysdeps/unix/sysv/linux/s390/brk.c: Likewise. * sysdeps/unix/sysv/linux/s390/elision-trylock.c: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/____longjmp_chk.c: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/sysdep.h: Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/____longjmp_chk.c: Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/sysdep.h: Likewise. * sysdeps/unix/sysv/linux/s390/sysconf.c: Likewise.
* powerpc: Spinlock optimization and cleanupPaul Murphy2015-11-194-6/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch optimizes powerpc spinlock implementation by: * Use the correct EH hint bit on the larx for supported ISA. For lock acquisition, the thread that acquired the lock with a successful stcx does not want to give away the write ownership on the cacheline. The idea is to make the load reservation "sticky" about retaining write authority to the line. That way, the store that must inevitably come to release the lock can succeed quickly and not contend with other threads issuing lwarx. If another thread does a store to the line (false sharing), the winning thread must give up write authority to the proper value of EH for the larx for a lock acquisition is 1. * Increase contented lock performance by up to 40%, and no measurable impact on uncontended locks on P8. Thanks to Adhemerval Zanella who did most of the work. I've run some tests, and addressed some minor feedback. * sysdeps/powerpc/nptl/pthread_spin_lock.c (pthread_spin_lock): Add lwarx hint, and use macro for acquire instruction. * sysdeps/powerpc/nptl/pthread_spin_trylock.c (pthread_spin_trylock): Likewise. * sysdep/unix/sysv/linux/powerpc/pthread_spin_unlock.c: Move to ... * sysdeps/powerpc/nptl/pthread_spin_unlock.c: ... here, and update to use new atomic macros.
* powerpc: More elision improvementsPaul Murphy2015-11-193-10/+23
| | | | | | | | | | | | | | | | | | | | | | | __lll_trylock_elision sets the adapt_count variable too aggressively, and incorrectly on persistent aborts. Taking a cue from s390, adapt_count is only updated if the lock is locked, or a persistent failure occurs. In addition, the abort codes have been renumbered and refactored for clarity. As it stands, glibc only cares if the abort is persistent or not. All aborts are now persistent, excepting a busy lock. This includes changing _ABORT_NESTED_TRYLOCK into a persistent abort. * sysdeps/unix/sysv/linux/powerpc/elision-trylock.c (__lll_trylock_elision): Fix setting of adapt_count. * sysdeps/unix/sysv/linux/powerpc/htm.h (_ABORT_PERSISTENT): Define to clarify persistent aborts. (_ABORT_NESTED_TRYLOCK): Renumber, and make persistent. (_ABORT_SYSCALL): Renumber, and clarify definition. (_ABORT_LOCK_BUSY): Renumber, make non-persistent.
* Shuffle includes in ldbl-128ibm/mpn2ldl.cPaul Murphy2015-11-192-2/+12
| | | | | | | | | | | Kind of hokey, but errno.h drags in misc/sys/param.h which defines MIN/MAX causing an error. Include system headers first to grab MIN/MAX definition in param.h, and define HAVE_ALLOCA to preserve existing behavior. * sysdeps/ieee754/ldbl-128ibm/mpn2ldl.c: Include gmp headers after system headers to prevent MIN/MAX redefinition. Define HAVE_ALLOCA to preserve builtin alloca usage.
* Include s_sin.c in s_sincos.cSiddhesh Poyarekar2015-11-173-19/+27
| | | | | | | | | | | | | | Include the __sin and __cos functions as local static copies to allow deper optimization of the functions. This change shows an improvement of about 17% in the min case and 12.5% in the mean case for the sincos microbenchmark on x86_64. * sysdeps/ieee754/dbl-64/s_sin.c (__sin)[IN_SINCOS]: Mark function static and don't set or restore rounding. (__cos)[IN_SINCOS]: Likewise. * sysdeps/ieee754/dbl-64/s_sincos.c: Include s_sin.c. (__sincos): Set and restore rounding mode. Remove check for infinite or NaN input.
* Remove redundant else clauses in s_sin.cSiddhesh Poyarekar2015-11-172-186/+160
| | | | | Makes the code easier to read due to the reduced nesting. The generated binary is unchanged.
* benchtests: Mark output variables as usedSiddhesh Poyarekar2015-11-172-1/+6
| | | | | | | | Prevent function calls that don't return anything from being optimized out by the compiler by marking its input variables as used. This prevents the sincos function call from being optimized out in the benchmark.
* Work around conflicting declarations of math functionsFlorian Weimer2015-11-162-0/+5
| | | | | This restores compilation on architectures such as armhfp which alias acos and acosl because double and long double are the same.
* Run tst-prelink test for GLOB_DAT relocH.J. Lu2015-11-148-15/+96
| | | | | | | | | | | | | | | | | | | | | | | Run tst-prelink test on targets with GLOB_DAT relocaton. * config.make.in (have-glob-dat-reloc): New. * configure.ac (libc_cv_has_glob_dat): New. Set to yes if target supports GLOB_DAT relocaton. AC_SUBST. * configure: Regenerated. * elf/Makefile (tests): Add tst-prelink. (tests-special): Add $(objpfx)tst-prelink-cmp.out. (tst-prelink-ENV): New. ($(objpfx)tst-prelink-conflict.out): Likewise. ($(objpfx)tst-prelink-cmp.out): Likewise. * sysdeps/x86/tst-prelink.c: Moved to ... * elf/tst-prelink.c: Here. * sysdeps/x86/tst-prelink.exp: Moved to ... * elf/tst-prelink.exp: Here. * sysdeps/x86/Makefile (tests): Don't add tst-prelink. (tst-prelink-ENV): Removed. ($(objpfx)tst-prelink-conflict.out): Likewise. ($(objpfx)tst-prelink-cmp.out): Likewise. (tests-special): Don't add $(objpfx)tst-prelink-cmp.out.
* Fix ldbl-128ibm strtold overflow handling (bug 14551).Joseph Myers2015-11-134-0/+111
| | | | | | | | | | | | | | | | | | | | | | | | For ldbl-128ibm, if the result of strtold overflows in the final conversion from MPN to IBM long double (because the exponent for a 106-bit IEEE result is 1023 but the high part would end up as 0x1p1024, which overflows), that conversion code fails to handle this and produces an invalid long double value (high part infinite, low part not zero) without raising exceptions or setting errno. This patch adds an explicit check for this case to ensure an appropriate result is returned in a way that ensures the right exceptions are raised, with errno set. Tested for powerpc. [BZ #14551] * sysdeps/ieee754/ldbl-128ibm/mpn2ldbl.c: Include <errno.h>. (__mpn_construct_long_double): If high part overflows to infinity, set errno and recompute overflowed result of the correct sign. * sysdeps/ieee754/ldbl-128ibm/Makefile [$(subdir) = stdlib] (tests): Add tst-strtold-ldbl-128ibm. [$(subdir) = stdlib] ($(objpfx)tst-strtold-ldbl-128ibm): Depend on $(libm). * sysdeps/ieee754/ldbl-128ibm/tst-strtold-ldbl-128ibm.c: New file.
* Fix powerpc round, roundf spurious "inexact" (bug 19238).Joseph Myers2015-11-125-12/+33
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The powerpc hard-float round and roundf functions, both 32-bit and 64-bit, raise spurious "inexact" exceptions for integer arguments from adding 0.5 and rounding to integer toward zero. Since these functions already save and restore the rounding mode, it's natural to make them restore the full floating-point state instead to fix this bug, which this patch does. The save of the state is moved after the first floating-point operation on the input so that any "invalid" exceptions from signaling NaN inputs are properly preserved. As a consequence of this approach to the fix, "inexact" for noninteger arguments (disallowed by TS 18661-1 but not by C99/C11, see bug 15479) is also avoided for these implementations; this is *not* a general fix for bug 15479 since plenty of other implementations of various functions still raise spurious "inexact" for noninteger arguments. This issue and fix do not apply to builds using power5+ versions of round and roundf, which use the frin instruction and avoid "inexact" exceptions that way. This patch should get hard-float powerpc32 and powerpc64 (default function implementations) back to a state where test-float and test-double will pass after ulps regeneration. Tested for powerpc32 and powerpc64. [BZ #15479] [BZ #19238] * sysdeps/powerpc/powerpc32/fpu/s_round.S (__round): Save floating-point state after first operation on input. Restore full state rather than just rounding mode. * sysdeps/powerpc/powerpc32/fpu/s_roundf.S (__roundf): Likewise. * sysdeps/powerpc/powerpc64/fpu/s_round.S (__round): Likewise. * sysdeps/powerpc/powerpc64/fpu/s_roundf.S (__roundf): Likewise.
* Fix powerpc64 lround, lroundf, llround, llroundf spurious "inexact" ↵Joseph Myers2015-11-123-0/+22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | exceptions (bug 19235). Similar to bug 19134 for powerpc32, the powerpc64 implementations of lround, lroundf, llround, llroundf can raise spurious "inexact" exceptions for integer arguments from adding 0.5 then converting to integer (this does not apply to the power5+ version for double, which uses the frin instruction which is defined never to raise "inexact"; I don't know why power5+ doesn't use that version for float as well). This patch fixes the bug in a similar way to the powerpc32 bug, by testing for integers (adding and subtracting 2^52 and comparing with the value before that addition and subtraction) and not adding 0.5 in that case. The powerpc maintainers may wish to look at making power5+ / power6x / power8 use frin for float lround / llround as well as for double, unless there's some reason I've missed that this isn't beneficial. Tested for powerpc64. [BZ #19235] * sysdeps/powerpc/powerpc64/fpu/s_llround.S (__llround): Do not add 0.5 to integer arguments. * sysdeps/powerpc/powerpc64/fpu/s_llroundf.S (__llroundf): Likewise. (.LC2): New object.
* pylintrc: disable reportsMike Frysinger2015-11-112-1/+5
| | | | | I've never found these useful, nor found anyone else who likes them. Turn them off by default.
* NaCl: Use open_resource API for shared objectsRoland McGrath2015-11-106-8/+159
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* Fix powerpc nearbyint wrongly clearing "inexact" and leaving traps disabled ↵Joseph Myers2015-11-117-9/+104
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | (bug 19228). Similar to bug 15491 recently fixed for x86_64 / x86, the powerpc (both powerpc32 and powerpc64) hard-float implementations of nearbyintf and nearbyint wrongly clear an "inexact" exception that was raised before the function was called; this shows up as failure of the test math/test-nearbyint-except added when that bug was fixed. They also wrongly leave traps on "inexact" disabled if they were enabled before the function was called. This patch fixes the bugs similar to how the x86 bug was fixed: saving and restoring the whole floating-point state, both to restore the original "inexact" flag state and to restore the original state of whether traps on "inexact" were enabled. Because there's a convenient point in the powerpc implementations to save state after any sNaN arguments will have raised "invalid" but before "inexact" traps need to be disabled, no special handling for "invalid" is needed as in the x86 version. Tested for powerpc64 and powerpc32, where it fixes the math/test-nearbyint-except failure as well as fixing the new test math/test-nearbyint-except-2 added by this patch. Also tested for x86_64 and x86 that the new test passes. If powerpc experts see a more efficient way of doing this (e.g. instruction positioning that's better for pipelines on typical processors) then of course followups optimizing the fix are welcome. [BZ #19228] * sysdeps/powerpc/powerpc32/fpu/s_nearbyint.S (__nearbyint): Save and restore full floating-point state. * sysdeps/powerpc/powerpc32/fpu/s_nearbyintf.S (__nearbyintf): Likewise. * sysdeps/powerpc/powerpc64/fpu/s_nearbyint.S (__nearbyint): Likewise. * sysdeps/powerpc/powerpc64/fpu/s_nearbyintf.S (__nearbyintf): Likewise. * math/test-nearbyint-except-2.c: New file. * math/Makefile (tests): Add test-nearbyint-except-2.
* Add a test for prelink outputH.J. Lu2015-11-104-0/+57
| | | | | | | | | | | | | | This test applies to i386 and x86_64 which set R_386_GLOB_DAT and R_X86_64_GLOB_DAT to ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA. [BZ #19178] * sysdeps/x86/Makefile (tests): Add tst-prelink. (tst-prelink-ENV): New. ($(objpfx)tst-prelink-conflict.out): Likewise. ($(objpfx)tst-prelink-cmp.out): Likewise. (tests-special): Add $(objpfx)tst-prelink-cmp.out. * sysdeps/x86/tst-prelink.c: New file. * sysdeps/x86/tst-prelink.exp: Likewise.
* Add more tests of pow.Joseph Myers2015-11-104-0/+33
| | | | | | | | | | | | | Prompted by a gcc-patches discussion, this patch adds tests of pow for the cases where pow (x, 0.5) is required to return a different result from sqrt (x), as those cases were previously missing from the tests (although they worked correctly). Tested for x86_64 and x86. * math/auto-libm-test-in: Add another test of pow. * math/auto-libm-test-out: Regenerated. * math/libm-test.inc (pow_test_data): Add another test.
* Fix nearbyintl linkage for ia64 (bug 19219)Adhemerval Zanella2015-11-102-2/+9
| | | | | | | | | | | | | GLIBC fails to build for ia64 since commit d0d286d32dda654f8983e8fe77bca0a2cda2051b. It is because this commit uses the internal definition for nearbyintl, but ia64 specialized implementation (sysdeps/ia64/fpu/s_nearbyintl.S) does not define it. Tested with a ia64 build. [BZ #19219] * sysdeps/ia64/fpu/s_nearbyintl.S (__nearbyint): Define and weak_alias to nearbyintl.
* Enable _STRING_ARCH_unaligned on AArch64.Wilco Dijkstra2015-11-102-1/+30
| | | | | * sysdeps/aarch64/bits/string.h: New file. (_STRING_ARCH_unaligned): Define.
* Remove __signbit* from localplt.data as they are no longer called from ↵Wilco Dijkstra2015-11-106-17/+8
| | | | | | | | | | within GLIBC. * sysdeps/unix/sysv/linux/aarch64/localplt.data: Remove __signbit*. * sysdeps/unix/sysv/linux/arm/localplt.data: Likewise. * sysdeps/unix/sysv/linux/microblaze/localplt.data: Likewise. * sysdeps/unix/sysv/linux/nios2/localplt.data: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/localplt.data: Likewise.
* ld.so: Add original DSO name if overridden by audit module [BZ #18251]Florian Weimer2015-11-0915-8/+397
| | | | | | | | | | | | | | | | | | | | | | | | * elf/dl-load.c (_dl_map_object_from_fd): Add additional parameter for original name of the DSO. Add it to the name list of the DSO if it is actually given. (_dl_map_object): Keep track of whether an audit module rewrote the file name. If yes, pass the original name to _dl_map_object_from_fd in a new parameter, otherwise NULL. When debugging is enabled, log the change of the file name. * sysdeps/mach/hur/dl-sysdep.c: Adjust commented-out call to _dl_map_object_from_fd. * elf/Makefile: Build and run tst-audit11 and tst-audit12. * elf/tst-audit11.c: New file * elf/tst-auditmod11.c: New file. * elf/tst-audit11mod1.c: New file. * elf/tst-audit11mod2.c: New file. * elf/tst-audit11mod2.map: New file. * elf/tst-audit12.c: New file * elf/tst-auditmod12.c: New file. * elf/tst-audit12mod1.c: New file. * elf/tst-audit12mod2.c: New file. * elf/tst-audit12mod2.map: New file. * elf/tst-audit12mod3.c: New file.
* S390: Clean setjmp, longjmp, getcontext symbols.Stefan Liebler2015-11-096-30/+63
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For each function setjmp, longjmp, getcontext, there exist a symbol <func> and a default/versioned symbol <func>@@GLIBC_2.x in the build obj-files. This is wrong because it should only exist an unversioned or a default-versioned symbol with the same name in an obj-file. Glibc can't be build with recent binutils. See the already fixed linker bug https://sourceware.org/bugzilla/show_bug.cgi?id=19073. Nevertheless, this patch cleans this up. Furthermore the BSD entry points setjmp, _setjmp were marked as weak, but should be strong as on other architectures. (see https://sourceware.org/ml/libc-alpha/2014-07/msg00568.html for an older discussion with Andreas Schwab) Some whitespace issues are corrected in sysdeps/s390/s390-64/setjmp.S, too. But there is no change in the assembler code. ChangeLog: * sysdeps/s390/longjmp.c (longjmp, _longjmp, siglongjmp): Don't create weak aliases, because versioned symbols are created later. * sysdeps/s390/s390-32/setjmp.S (setjmp, _setjmp): Remove weak and rename to an unique name in SHARED case due to existing versioned symbols. * sysdeps/s390/s390-64/setjmp.S: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/getcontext.S (getcontext): Create weak alias only in non SHARED case. * sysdeps/unix/sysv/linux/s390/s390-64/getcontext.S: Likewise.
* S390: Call direct system calls for socket operations.Stefan Liebler2015-11-096-19/+43
| | | | | | | | | | | | | | | | | | | | | this patch calls direct system calls for socket operations in the same way as power does. The system calls were introduced in kernel commit https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=977108f89c989b1eeb5c8d938e1e71913391eb5f. There are no direct recv, send, accept syscalls available on s390. Thus recvfrom, sendto, accept4 are called instead of the socketcall by defining __ASSUME_*_FOR_*_SYSCALL macros. See recv.c, send.c, accept.c in sysdeps/unix/sysv/linux/ folder. The socketcalls in syscalls.list for s390-64 are removed. They were never used on s390x. ChangeLog: * sysdeps/unix/sysv/linux/s390/kernel-features.h: (__ASSUME_*_SYSCALL) Define new macros. * sysdeps/unix/sysv/linux/s390/s390-64/syscalls.list: Remove socketcall syscalls. * sysdeps/unix/sysv/linux/accept.c (__libc_accept): Use accept4 if defined __ASSUME_ACCEPT4_FOR_ACCEPT_SYSCALL. * sysdeps/unix/sysv/linux/recv.c (__libc_recv): Use recvfrom if defined __ASSUME_RECVFROM_FOR_RECV_SYSCALL. * sysdeps/unix/sysv/linux/send.c (__libc_send): Use sendto if defined __ASSUME_SENDTO_FOR_SEND_SYSCALL.
* Terminate process on invalid netlink response from kernel [BZ #12926]Florian Weimer2015-11-099-1/+145
| | | | | | | | | | | | | | | | | | | | | | | | | The recvmsg system calls for netlink sockets have been particularly prone to picking up unrelated data after a file descriptor race (where the descriptor is closed and reopened concurrently in a multi-threaded process, as the result of a file descriptor management issue elsewhere). This commit adds additional error checking and aborts the process if a datagram of unexpected length (without the netlink header) is received, or an error code which cannot happen due to the way the netlink socket is used. [BZ #12926] Terminate process on invalid netlink response. * sysdeps/unix/sysv/linux/netlinkaccess.h (__netlink_assert_response): Declare. * sysdeps/unix/sysv/linux/netlink_assert_response.c: New file. * sysdeps/unix/sysv/linux/Makefile [$(subdir) == inet] (sysdep_routines): Add netlink_assert_response. * sysdeps/unix/sysv/linux/check_native.c (__check_native): Call __netlink_assert_response. * sysdeps/unix/sysv/linux/check_pf.c (make_request): Likewise. * sysdeps/unix/sysv/linux/ifaddrs.c (__netlink_request): Likewise. * sysdeps/unix/sysv/linux/Versions (GLIBC_PRIVATE): Add __netlink_assert_response.
* Keep only ELF_RTYPE_CLASS_{PLT|COPY} bits for prelinkH.J. Lu2015-11-072-2/+31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | prelink runs ld.so with the environment variable LD_TRACE_PRELINKING set to dump the relocation type class from _dl_debug_bindings. prelink has the following relocation type classes: #define RTYPE_CLASS_VALID 8 #define RTYPE_CLASS_PLT (8|1) #define RTYPE_CLASS_COPY (8|2) #define RTYPE_CLASS_TLS (8|4) where ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA has a conflict with RTYPE_CLASS_TLS. Since prelink only uses ELF_RTYPE_CLASS_PLT and ELF_RTYPE_CLASS_COPY bits, we should clear the other bits when the DL_DEBUG_PRELINK bit is set. [BZ #19178] * elf/dl-lookup.c (RTYPE_CLASS_VALID): New. (RTYPE_CLASS_PLT): Likewise. (RTYPE_CLASS_COPY): Likewise. (RTYPE_CLASS_TLS): Likewise. (_dl_debug_bindings): Use RTYPE_CLASS_TLS and RTYPE_CLASS_VALID to set relocation type class for DL_DEBUG_PRELINK. Keep only ELF_RTYPE_CLASS_PLT and ELF_RTYPE_CLASS_COPY bits for DL_DEBUG_PRELINK.
* Fix typo in signgam test messages.Joseph Myers2015-11-063-4/+8
| | | | | | | | | | | I noticed a typo in the messages from the signgam tests I recently added. This patch fixes it. Tested for x86_64 and x86. * math/test-signgam-finite.c (RUN_TESTS): Correct messages about calls with argument -0.5. * math/test-signgam-finite-c99.c (RUN_TESTS): Likewise.
* Remove configure tests for some linker -z options.Joseph Myers2015-11-063-108/+7
| | | | | | | | | | | | | | There are configure tests for the linker -z nodelete, -z nodlopen and -z initfirst options. These options were added in binutils 2.11, so the tests are obsolete; this patch removes them. Tested for x86_64 and x86 (testsuite, and that installed shared libraries are unchanged by the patch). * configure.ac (libc_cv_z_nodelete): Remove configure test. (libc_cv_z_nodlopen): Likewise. (libc_cv_z_initfirst): Likewise. * configure: Regenerated.
* Simplify the abilist formatFlorian Weimer2015-11-06362-92593/+91069
| | | | | | | | | | | | | | | The new format lists the version on each line, as in: VERSION SYMBOL TYPE [VALUE] This makes it easier to process the files with line-oriented tools. The abilist files were converted with this awk script: /^[^ ]/ { version = $1 } /^ / { print version, substr($0, 2) } And sorted under the "C" locale with sort.
* Add LFS support for fts functions (bug 11460)Mark Wielaard2015-11-0643-66/+733
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | fts didn't have large-file support yet and fts.h had an #error preventing usage when _FILE_OFFSET_BITS was set. This required nasty workarounds for programs using fts with LFS. This patch implements LFS support for fts by adding FTS64 and FTENT64 variants plus fts64 functions. Which are simple aliases for 64bit off_t arches. Also includes a simple testcase for some of the fts functions with or without LFS enabled. [BZ #11460] * io/Makefile (routines): Add fts64. (tests): Add tst-fts and tst-fts-lfs. (CFLAGS-fts64.c): New. * io/Versions (GLIBC_2.23): New. * io/fts.c: Replace FTS with FTSOBJ, FTSENT with FTSENTRY. Use function defines FTS_OPEN, FTS_CLOSE, FTS_READ, FTS_SET and FTS_CHILDREN. Define FTSOBJ, FTSENTRY, FTS_OPEN, FTS_CLOSE, FTS_READ, FTS_SET, FTS_CHILDREN, INO_T, STAT and LSTAT if necessary. * io/fts.h (FTS64): New if _USE_LARGEFILE64. (FTSENT64): Likewise. (fts64_children): Likewise. (fts64_close): Likewise. (fts64_open): Likewise. (fts64_read): Likewise. (fts64_set): Likewise. * io/fts64.c: New file. * io/tst-fts.c: New test. * io/tst-fts-lfs.c: Likewise. * sysdeps/unix/sysv/linux/aarch64/libc.abilist (GLIBC_2.23): Add GLIBC_2.23, fts64_children, fts64_close, fts64_open, fts64_read and fts64_set. * 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/nios2/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.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.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/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. * sysdeps/wordsize-64/fts.c: New file. * sysdeps/wordsize-64/fts64.c: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n64/fts.c: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n64/fts64.c: Likewise. * sysdeps/unix/sysv/linux/x86_64/x32/fts.c: likewise. * sysdeps/unix/sysv/linux/x86_64/x32/fts64.c: likewise.
* Run libm-test tests for finite-math-only functions.Joseph Myers2015-11-0514-8/+181
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch arranges for the libm-test tests to be run for the finite-math-only function variants, in addition to the existing runs for out-of-line and bits/mathinline.h inline variants. gen-libm-test.pl is made to add a flag to all tests with non-finite inputs or outputs so that they can be skipped at runtime when the finite-math-only variants are being tested (skipping is for all rounding modes; that is, -ffinite-math-only is being treated as excluding overflow cases even when the rounding mode is such that the overflowed result is finite). errno setting is not tested for these variants (in general they don't set it, and it's implementation-defined in ISO C whether it's set on underflow, with the glibc definition being that it may not be for -ffinite-math-only; other cases where errno would normally be expected to be set are mostly excluded as having non-finite or overflowing arguments or results). As with the inline function tests, these ones are built with -D__FINITE_MATH_ONLY=1 to select the function variants, rather than -ffinite-math-only. Use of -ffinite-math-only would not be suitable for these tests because it would also affect libm-test.inc code that e.g. tests whether results are infinities or NaNs - if these function variants have bugs that incorrectly produce such results, we want them to show up in the tests, which means the compiler should not be optimizing the tests on the basis of results being finite. The finite-math-only functions share the same ulps settings as the main out-of-line functions. These interfaces were one significant group of untested ABIs listed at <https://sourceware.org/ml/libc-alpha/2013-07/msg00386.html>. I haven't rerun the script to list untested interfaces, but I expect that the vast bulk of interfaces there are still untested and could do with testcases being added (or, if applicable, being made compat symbols; in general, most symbols not starting '_' are safe bets to add tests for, while _* need more investigation of what the actual public API is, if any). I'd like to encourage people to help reduce the accumulation of untested interfaces by adding more tests. Tested for x86_64 and x86. Given my recent lgamma/gamma and log* fixes, the new tests pass (before those fixes, the new tests showed up those bugs, so illustrating the practical utility of having tests for these function variants). * math/libm-test.inc (NON_FINITE): New macro. (enable_test): Do not run tests flagged NON_FINITE if TEST_FINITE. * math/gen-libm-test.pl (show_exceptions): Add argument $non_finite. (parse_args): Update call to show_exceptions. * math/test-math-finite.h: New file. * math/test-math-no-finite.h: Likewise. * math/test-double-finite.c: Likewise. * math/test-float-finite.c: Likewise. * math/test-ldouble-finite.c: Likewise. * math/test-double.c: Include "test-math-no-finite.h". * math/test-float.c: Include "test-math-no-finite.h". * math/test-ldouble.c: Include "test-math-no-finite.h". * math/test-math-inline.h (TEST_FINITE): New macro. * math/test-math-vector.h (TEST_FINITE): Likewise. * math/Makefile (test-longdouble-yes): Add test-ldouble-finite. (libm-tests): Add test-float-finite and test-double-finite. ($(objpfx)test-float-finite.o): New dependency on $(objpfx)libm-test.stmp. ($(objpfx)test-double-finite.o): Likewise. ($(objpfx)test-ldouble-finite.o): Likewise. (libm-test-no-inline-cflags): New variable. (libm-test-finite-cflags): Likewise. (CFLAGS-test-float-finite.c): Likewise. (CFLAGS-test-double-finite.c): Likewise. (CFLAGS-test-ldouble-finite.c): Likewise. (CFLAGS-test-float.c): Use $(libm-test-no-inline-cflags). (CFLAGS-test-double.c): Likewise. (CFLAGS-test-ldouble.c): Likewise.
* Fix some stub prototypes missing ... after K&R conversionRoland McGrath2015-11-054-3/+9
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* Add script to list fixed bugs for the NEWS file.Joseph Myers2015-11-053-17/+53
| | | | | | | | | | This patch adds a script to list fixed bugs for the NEWS file, as proposed in <https://sourceware.org/ml/libc-alpha/2015-10/msg01043.html>, with the bugs listed in the format proposed in <https://sourceware.org/ml/libc-alpha/2015-11/msg00088.html>. * scripts/list-fixed-bugs.py: New file.
* Fix i386/x86_64 log* (1) zero sign for -ffinite-math-only (bug 19213).Joseph Myers2015-11-059-8/+60
| | | | | | | | | | | | | | | | | | | | | For the -ffinite-math-only versions of various x86_64 and x86 log* functions, a zero result from log* (1) is returned with incorrect sign in round-downward mode. This patch fixes this in a similar way to the previous fixes for the non-*_finite versions of the functions. Tested for x86_64 and x86 (including an i586 build), together with a patch that will be applied separately to enable the main libm-test.inc tests for the finite-math-only functions. [BZ #19213] * sysdeps/i386/fpu/e_log.S (__log_finite): Ensure +0 is always returned for argument 1. * sysdeps/i386/fpu/e_logf.S (__logf_finite): Likewise. * sysdeps/i386/fpu/e_logl.S (__logl_finite): Likewise. * sysdeps/i386/i686/fpu/e_logl.S (__logl_finite): Likewise. * sysdeps/x86_64/fpu/e_log10l.S (__log10l_finite): Likewise. * sysdeps/x86_64/fpu/e_log2l.S (__log2l_finite): Likewise. * sysdeps/x86_64/fpu/e_logl.S (__logl_finite): Likewise.
* Fix finite-math-only lgamma functions signgam setting (bug 19211).Joseph Myers2015-11-057-26/+164
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The lgamma inline functions in bits/math-finite.h do not set signgam if __USE_ISOC99, even when other feature test macros mean a standard such as XSI POSIX is selected for which it should be set. (This is essentially the opposite issue to bug 15421, the out-of-line versions setting signgam even when they shouldn't.) This patch fixes those functions to use __USE_MISC || __USE_XOPEN as the condition for when to set signgam, since it's the condition for when math.h declares signgam. The legacy gamma* names are only declared at all if __USE_MISC || __USE_XOPEN, so they just set signgam unconditionally. Tests for certain standards or not using _GNU_SOURCE cannot use test-skeleton.c (this is a known issue noted on the wiki todo list). Thus, the new tests that signgam remains not set in ISO C modes do not use test-skeleton.c. They also define _ISOMAC to avoid running into declarations in the internal include/ headers that only work in _GNU_SOURCE mode. Tested for x86_64 and x86. [BZ #19211] * math/bits/math-finite.h (lgamma): Set signgam if [__USE_MISC || __USE_XOPEN], not if [!__USE_ISOC99]. (lgammaf): Likewise. (lgammal): Likewise. (gamma): Set signgam unconditionally, not if [!__USE_ISOC99]. (gammaf): Likewise. (gammal): Likewise. * math/test-signgam-finite-c11.c: New file. * math/test-signgam-finite-c99.c: Likewise. * math/test-signgam-finite.c: Likewise. * math/Makefile (tests): Add test-signgam-finite, test-signgam-finite-c99 and test-signgam-finite-c11. (CFLAGS-test-signgam-finite.c): New variable. (CFLAGS-test-signgam-finite-c99.c): Likewise. (CFLAGS-test-signgam-finite-c11.c): Likewise.
* Fix features.h for -Wundef (bug 19212).Joseph Myers2015-11-053-8/+26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | features.h is not clean with -Wundef (for the installed header, of course this only appears with -Wsystem-headers). In ISO C standards modes, you get a series of warnings / errors relating to _POSIX_C_SOURCE and _XOPEN_SOURCE not being defined when tested in standards mode and uses #undef _GNU_SOURCE to avoid the default _GNU_SOURCE from libc-symbols.h. This patch changes the relevant #if conditionals to avoid these warnings / errors. Tested for x86_64 and x86 (testsuite, and that installed shared libraries are unchanged by the patch). [BZ #19212] * include/features.h [(_XOPEN_SOURCE - 0) >= 500]: Change conditional to [defined _XOPEN_SOURCE && (_XOPEN_SOURCE - 0) >= 500]. [_POSIX_C_SOURCE >= 1]: Change conditional to [defined _POSIX_C_SOURCE && _POSIX_C_SOURCE >= 1]. [(_POSIX_C_SOURCE - 0) >= 199309L]: Change conditional to [defined _POSIX_C_SOURCE && (_POSIX_C_SOURCE - 0) >= 199309L]. [(_POSIX_C_SOURCE - 0) >= 199506L]: Change conditional to [defined _POSIX_C_SOURCE && (_POSIX_C_SOURCE - 0) >= 199506L]. [(_POSIX_C_SOURCE - 0) >= 200112L]: Change conditional to [defined _POSIX_C_SOURCE && (_POSIX_C_SOURCE - 0) >= 200112L]. [(_POSIX_C_SOURCE - 0) >= 200809L]: Change conditional to [defined _POSIX_C_SOURCE && (_POSIX_C_SOURCE - 0) >= 200809L].
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