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* Update arm, mips, powerpc-nofpu libm-test-ulps.Joseph Myers2017-02-171-52/+60
| | | | | | | * sysdeps/arm/libm-test-ulps: Update. * sysdeps/mips/mips32/libm-test-ulps: Likewise. * sysdeps/mips/mips64/libm-test-ulps: Likewise. * sysdeps/powerpc/nofpu/libm-test-ulps: Likewise.
* Fix ARM fpu_control.h for assemblers requiring VFP insn names (bug 21047).Joseph Myers2017-01-191-2/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Bug 21047 reports that the clang assembler disallows the ARM implementations of _FPU_GETCW and _FPU_SETCW. These are deliberately written the way they are, using generic coprocessor instructions (from the days when VFP was just one possible coprocessor for ARM) that have the right encodings, to handle the case of the instructions being used runtime-conditionally inside glibc, where use of these macros is not meant to result in either the assembler requiring VFP to be enabled at assembly time or in it marking the object as using VFP. However, more recent ARM ARM versions have restricted the definitions of the coprocessor instructions and reportedly the clang assembler follows that in disallowing those names for VFP instructions. In the non-__SOFTFP__ case - which in fact is the only case where these macro definitions can be used outside the build of glibc itself - using VFP instruction names is of course fine, since we know that VFP is enabled for that compilation. Thus, this patch uses the current VFP names for these instructions in that case to improve compatibility for this header file. Tested for hard-float and soft-float builds of glibc, including that installed stripped shared libraries are unchanged by the patch. [BZ #21047] * sysdeps/arm/fpu_control.h [!__SOFTFP__] (_FPU_GETCW): Use VFP name for instruction. [!__SOFTFP__] (_FPU_SETCW): Likewise.
* New pthread rwlock that is more scalable.Torvald Riegel2017-01-101-7/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This replaces the pthread rwlock with a new implementation that uses a more scalable algorithm (primarily through not using a critical section anymore to make state changes). The fast path for rdlock acquisition and release is now basically a single atomic read-modify write or CAS and a few branches. See nptl/pthread_rwlock_common.c for details. * nptl/DESIGN-rwlock.txt: Remove. * nptl/lowlevelrwlock.sym: Remove. * nptl/Makefile: Add new tests. * nptl/pthread_rwlock_common.c: New file. Contains the new rwlock. * nptl/pthreadP.h (PTHREAD_RWLOCK_PREFER_READER_P): Remove. (PTHREAD_RWLOCK_WRPHASE, PTHREAD_RWLOCK_WRLOCKED, PTHREAD_RWLOCK_RWAITING, PTHREAD_RWLOCK_READER_SHIFT, PTHREAD_RWLOCK_READER_OVERFLOW, PTHREAD_RWLOCK_WRHANDOVER, PTHREAD_RWLOCK_FUTEX_USED): New. * nptl/pthread_rwlock_init.c (__pthread_rwlock_init): Adapt to new implementation. * nptl/pthread_rwlock_rdlock.c (__pthread_rwlock_rdlock_slow): Remove. (__pthread_rwlock_rdlock): Adapt. * nptl/pthread_rwlock_timedrdlock.c (pthread_rwlock_timedrdlock): Adapt. * nptl/pthread_rwlock_timedwrlock.c (pthread_rwlock_timedwrlock): Adapt. * nptl/pthread_rwlock_trywrlock.c (pthread_rwlock_trywrlock): Adapt. * nptl/pthread_rwlock_tryrdlock.c (pthread_rwlock_tryrdlock): Adapt. * nptl/pthread_rwlock_unlock.c (pthread_rwlock_unlock): Adapt. * nptl/pthread_rwlock_wrlock.c (__pthread_rwlock_wrlock_slow): Remove. (__pthread_rwlock_wrlock): Adapt. * nptl/tst-rwlock10.c: Adapt. * nptl/tst-rwlock11.c: Adapt. * nptl/tst-rwlock17.c: New file. * nptl/tst-rwlock18.c: New file. * nptl/tst-rwlock19.c: New file. * nptl/tst-rwlock2b.c: New file. * nptl/tst-rwlock8.c: Adapt. * nptl/tst-rwlock9.c: Adapt. * sysdeps/aarch64/nptl/bits/pthreadtypes.h (pthread_rwlock_t): Adapt. * sysdeps/arm/nptl/bits/pthreadtypes.h (pthread_rwlock_t): Adapt. * sysdeps/hppa/nptl/bits/pthreadtypes.h (pthread_rwlock_t): Adapt. * sysdeps/ia64/nptl/bits/pthreadtypes.h (pthread_rwlock_t): Adapt. * sysdeps/m68k/nptl/bits/pthreadtypes.h (pthread_rwlock_t): Adapt. * sysdeps/microblaze/nptl/bits/pthreadtypes.h (pthread_rwlock_t): Adapt. * sysdeps/mips/nptl/bits/pthreadtypes.h (pthread_rwlock_t): Adapt. * sysdeps/nios2/nptl/bits/pthreadtypes.h (pthread_rwlock_t): Adapt. * sysdeps/s390/nptl/bits/pthreadtypes.h (pthread_rwlock_t): Adapt. * sysdeps/sh/nptl/bits/pthreadtypes.h (pthread_rwlock_t): Adapt. * sysdeps/sparc/nptl/bits/pthreadtypes.h (pthread_rwlock_t): Adapt. * sysdeps/tile/nptl/bits/pthreadtypes.h (pthread_rwlock_t): Adapt. * sysdeps/unix/sysv/linux/alpha/bits/pthreadtypes.h (pthread_rwlock_t): Adapt. * sysdeps/unix/sysv/linux/powerpc/bits/pthreadtypes.h (pthread_rwlock_t): Adapt. * sysdeps/x86/bits/pthreadtypes.h (pthread_rwlock_t): Adapt. * nptl/nptl-printers.py (): Adapt. * nptl/nptl_lock_constants.pysym: Adapt. * nptl/test-rwlock-printers.py: Adapt. * nptl/test-rwlockattr-printers.c: Adapt. * nptl/test-rwlockattr-printers.py: Adapt.
* Update copyright dates with scripts/update-copyrights.Joseph Myers2017-01-01118-118/+118
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* New condvar implementation that provides stronger ordering guarantees.Torvald Riegel2016-12-311-8/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is a new implementation for condition variables, required after http://austingroupbugs.net/view.php?id=609 to fix bug 13165. In essence, we need to be stricter in which waiters a signal or broadcast is required to wake up; this couldn't be solved using the old algorithm. ISO C++ made a similar clarification, so this also fixes a bug in current libstdc++, for example. We can't use the old algorithm anymore because futexes do not guarantee to wake in FIFO order. Thus, when we wake, we can't simply let any waiter grab a signal, but we need to ensure that one of the waiters happening before the signal is woken up. This is something the previous algorithm violated (see bug 13165). There's another issue specific to condvars: ABA issues on the underlying futexes. Unlike mutexes that have just three states, or semaphores that have no tokens or a limited number of them, the state of a condvar is the *order* of the waiters. A waiter on a semaphore can grab a token whenever one is available; a condvar waiter must only consume a signal if it is eligible to do so as determined by the relative order of the waiter and the signal. Therefore, this new algorithm maintains two groups of waiters: Those eligible to consume signals (G1), and those that have to wait until previous waiters have consumed signals (G2). Once G1 is empty, G2 becomes the new G1. 64b counters are used to avoid ABA issues. This condvar doesn't yet use a requeue optimization (ie, on a broadcast, waking just one thread and requeueing all others on the futex of the mutex supplied by the program). I don't think doing the requeue is necessarily the right approach (but I haven't done real measurements yet): * If a program expects to wake many threads at the same time and make that scalable, a condvar isn't great anyway because of how it requires waiters to operate mutually exclusive (due to the mutex usage). Thus, a thundering herd problem is a scalability problem with or without the optimization. Using something like a semaphore might be more appropriate in such a case. * The scalability problem is actually at the mutex side; the condvar could help (and it tries to with the requeue optimization), but it should be the mutex who decides how that is done, and whether it is done at all. * Forcing all but one waiter into the kernel-side wait queue of the mutex prevents/avoids the use of lock elision on the mutex. Thus, it prevents the only cure against the underlying scalability problem inherent to condvars. * If condvars use short critical sections (ie, hold the mutex just to check a binary flag or such), which they should do ideally, then forcing all those waiter to proceed serially with kernel-based hand-off (ie, futex ops in the mutex' contended state, via the futex wait queues) will be less efficient than just letting a scalable mutex implementation take care of it. Our current mutex impl doesn't employ spinning at all, but if critical sections are short, spinning can be much better. * Doing the requeue stuff requires all waiters to always drive the mutex into the contended state. This leads to each waiter having to call futex_wake after lock release, even if this wouldn't be necessary. [BZ #13165] * nptl/pthread_cond_broadcast.c (__pthread_cond_broadcast): Rewrite to use new algorithm. * nptl/pthread_cond_destroy.c (__pthread_cond_destroy): Likewise. * nptl/pthread_cond_init.c (__pthread_cond_init): Likewise. * nptl/pthread_cond_signal.c (__pthread_cond_signal): Likewise. * nptl/pthread_cond_wait.c (__pthread_cond_wait): Likewise. (__pthread_cond_timedwait): Move here from pthread_cond_timedwait.c. (__condvar_confirm_wakeup, __condvar_cancel_waiting, __condvar_cleanup_waiting, __condvar_dec_grefs, __pthread_cond_wait_common): New. (__condvar_cleanup): Remove. * npt/pthread_condattr_getclock.c (pthread_condattr_getclock): Adapt. * npt/pthread_condattr_setclock.c (pthread_condattr_setclock): Likewise. * npt/pthread_condattr_getpshared.c (pthread_condattr_getpshared): Likewise. * npt/pthread_condattr_init.c (pthread_condattr_init): Likewise. * nptl/tst-cond1.c: Add comment. * nptl/tst-cond20.c (do_test): Adapt. * nptl/tst-cond22.c (do_test): Likewise. * sysdeps/aarch64/nptl/bits/pthreadtypes.h (pthread_cond_t): Adapt structure. * sysdeps/arm/nptl/bits/pthreadtypes.h (pthread_cond_t): Likewise. * sysdeps/ia64/nptl/bits/pthreadtypes.h (pthread_cond_t): Likewise. * sysdeps/m68k/nptl/bits/pthreadtypes.h (pthread_cond_t): Likewise. * sysdeps/microblaze/nptl/bits/pthreadtypes.h (pthread_cond_t): Likewise. * sysdeps/mips/nptl/bits/pthreadtypes.h (pthread_cond_t): Likewise. * sysdeps/nios2/nptl/bits/pthreadtypes.h (pthread_cond_t): Likewise. * sysdeps/s390/nptl/bits/pthreadtypes.h (pthread_cond_t): Likewise. * sysdeps/sh/nptl/bits/pthreadtypes.h (pthread_cond_t): Likewise. * sysdeps/tile/nptl/bits/pthreadtypes.h (pthread_cond_t): Likewise. * sysdeps/unix/sysv/linux/alpha/bits/pthreadtypes.h (pthread_cond_t): Likewise. * sysdeps/unix/sysv/linux/powerpc/bits/pthreadtypes.h (pthread_cond_t): Likewise. * sysdeps/x86/bits/pthreadtypes.h (pthread_cond_t): Likewise. * sysdeps/nptl/internaltypes.h (COND_NWAITERS_SHIFT): Remove. (COND_CLOCK_BITS): Adapt. * sysdeps/nptl/pthread.h (PTHREAD_COND_INITIALIZER): Adapt. * nptl/pthreadP.h (__PTHREAD_COND_CLOCK_MONOTONIC_MASK, __PTHREAD_COND_SHARED_MASK): New. * nptl/nptl-printers.py (CLOCK_IDS): Remove. (ConditionVariablePrinter, ConditionVariableAttributesPrinter): Adapt. * nptl/nptl_lock_constants.pysym: Adapt. * nptl/test-cond-printers.py: Adapt. * sysdeps/unix/sysv/linux/hppa/internaltypes.h (cond_compat_clear, cond_compat_check_and_clear): Adapt. * sysdeps/unix/sysv/linux/hppa/pthread_cond_timedwait.c: Remove file ... * sysdeps/unix/sysv/linux/hppa/pthread_cond_wait.c (__pthread_cond_timedwait): ... and move here. * nptl/DESIGN-condvar.txt: Remove file. * nptl/lowlevelcond.sym: Likewise. * nptl/pthread_cond_timedwait.c: Likewise. * sysdeps/unix/sysv/linux/i386/i486/pthread_cond_broadcast.S: Likewise. * sysdeps/unix/sysv/linux/i386/i486/pthread_cond_signal.S: Likewise. * sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S: Likewise. * sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S: Likewise. * sysdeps/unix/sysv/linux/i386/i586/pthread_cond_broadcast.S: Likewise. * sysdeps/unix/sysv/linux/i386/i586/pthread_cond_signal.S: Likewise. * sysdeps/unix/sysv/linux/i386/i586/pthread_cond_timedwait.S: Likewise. * sysdeps/unix/sysv/linux/i386/i586/pthread_cond_wait.S: Likewise. * sysdeps/unix/sysv/linux/i386/i686/pthread_cond_broadcast.S: Likewise. * sysdeps/unix/sysv/linux/i386/i686/pthread_cond_signal.S: Likewise. * sysdeps/unix/sysv/linux/i386/i686/pthread_cond_timedwait.S: Likewise. * sysdeps/unix/sysv/linux/i386/i686/pthread_cond_wait.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/pthread_cond_broadcast.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/pthread_cond_signal.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S: Likewise.
* New string function explicit_bzero (from OpenBSD).Zack Weinberg2016-12-161-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | explicit_bzero(s, n) is the same as memset(s, 0, n), except that the compiler is not allowed to delete a call to explicit_bzero even if the memory pointed to by 's' is dead after the call. Right now, this effect is achieved externally by having explicit_bzero be a function whose semantics are unknown to the compiler, and internally, with a no-op asm statement that clobbers memory. This does mean that small explicit_bzero operations cannot be expanded inline as small memset operations can, but on the other hand, small memset operations do get deleted by the compiler. Hopefully full compiler support for explicit_bzero will happen relatively soon. There are two new tests: test-explicit_bzero.c verifies the visible semantics in the same way as the existing test-bzero.c, and tst-xbzero-opt.c verifies the not-being-optimized-out property. The latter is conceptually based on a test written by Matthew Dempsky for the OpenBSD regression suite. The crypt() implementation has an immediate use for this new feature. We avoid having to add a GLIBC_PRIVATE alias for explicit_bzero by running all of libcrypt's calls through the fortified variant, __explicit_bzero_chk, which is in the impl namespace anyway. Currently I'm not aware of anything in libc proper that needs this, but the glue is all in place if it does become necessary. The legacy DES implementation wasn't bothering to clear its buffers, so I added that, mostly for consistency's sake. * string/explicit_bzero.c: New routine. * string/test-explicit_bzero.c, string/tst-xbzero-opt.c: New tests. * string/Makefile (routines, strop-tests, tests): Add them. * string/test-memset.c: Add ifdeffage for testing explicit_bzero. * string/string.h [__USE_MISC]: Declare explicit_bzero. * debug/explicit_bzero_chk.c: New routine. * debug/Makefile (routines): Add it. * debug/tst-chk1.c: Test fortification of explicit_bzero. * string/bits/string3.h: Fortify explicit_bzero. * manual/string.texi: Document explicit_bzero. * NEWS: Mention addition of explicit_bzero. * crypt/crypt-entry.c (__crypt_r): Clear key-dependent intermediate data before returning, using explicit_bzero. * crypt/md5-crypt.c (__md5_crypt_r): Likewise. * crypt/sha256-crypt.c (__sha256_crypt_r): Likewise. * crypt/sha512-crypt.c (__sha512_crypt_r): Likewise. * include/string.h: Redirect internal uses of explicit_bzero to __explicit_bzero_chk[_internal]. * string/Versions [GLIBC_2.25]: Add explicit_bzero. * debug/Versions [GLIBC_2.25]: Add __explicit_bzero_chk. * sysdeps/arm/nacl/libc.abilist * sysdeps/unix/sysv/linux/aarch64/libc.abilist * sysdeps/unix/sysv/linux/alpha/libc.abilist * sysdeps/unix/sysv/linux/arm/libc.abilist * sysdeps/unix/sysv/linux/hppa/libc.abilist * sysdeps/unix/sysv/linux/i386/libc.abilist * sysdeps/unix/sysv/linux/ia64/libc.abilist * sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist * sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist * sysdeps/unix/sysv/linux/microblaze/libc.abilist * sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist * sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist * sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist * sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist * sysdeps/unix/sysv/linux/nios2/libc.abilist * sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist * sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist * sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist * sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist * sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist * sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist * sysdeps/unix/sysv/linux/sh/libc.abilist * sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist * sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist * sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libc.abilist * sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libc.abilist * sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist * sysdeps/unix/sysv/linux/x86_64/64/libc.abilist * sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist: Add entries for explicit_bzero and __explicit_bzero_chk.
* Add getentropy, getrandom, <sys/random.h> [BZ #17252]Florian Weimer2016-12-121-0/+2
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* Refactor FP_FAST_* into bits/fp-fast.h.Joseph Myers2016-11-291-49/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Continuing the refactoring of bits/mathdef.h, this patch moves the FP_FAST_* definitions into a new bits/fp-fast.h header. Currently this is only for FP_FAST_FMA*, but in future it would be the appropriate place for the FP_FAST_* macros from TS 18661-1 as well. The generic bits/mathdef.h header defines these macros based on whether the compiler defines __FP_FAST_*. Most architecture-specific headers, however, fail to do so, meaning that if the architecture (or some particular processors) does in fact have fused operations, and GCC knows to use them inline, the FP_FAST_* macros will still not be defined. By refactoring, this patch causes the generic version (based on __FP_FAST_*) to be used in more cases, and so the macro definitions to be more accurate. Architectures that already defined some or all of these macros other than based on the predefines have their own versions of fp-fast.h, which are arranged so they define FP_FAST_* if either the architecture-specific conditions are true or __FP_FAST_* are defined. After this refactoring, various bits/mathdef.h headers for architectures with long double = double are semantically identical to the generic version. The patch removes those headers that are redundant. (In fact two of the four removed were already redundant before this patch because they did use __FP_FAST_*.) Tested for x86_64 and x86, and compilation-only with build-many-glibcs.py. * bits/fp-fast.h: New file. * sysdeps/aarch64/bits/fp-fast.h: Likewise. * sysdeps/powerpc/bits/fp-fast.h: Likewise. * math/Makefile (headers): Add bits/fp-fast.h. * math/math.h: Include <bits/fp-fast.h>. * bits/mathdef.h (FP_FAST_FMA): Remove. (FP_FAST_FMAF): Likewise. (FP_FAST_FMAL): Likewise. * sysdeps/aarch64/bits/mathdef.h (FP_FAST_FMA): Likewise. (FP_FAST_FMAF): Likewise. * sysdeps/powerpc/bits/mathdef.h (FP_FAST_FMA): Likewise. (FP_FAST_FMAF): Likewise. * sysdeps/x86/bits/mathdef.h (FP_FAST_FMA): Likewise. (FP_FAST_FMAF): Likewise. (FP_FAST_FMAL): Likewise. * sysdeps/arm/bits/mathdef.h: Remove file. * sysdeps/hppa/fpu/bits/mathdef.h: Likewise. * sysdeps/sh/sh4/bits/mathdef.h: Likewise. * sysdeps/tile/bits/mathdef.h: Likewise.
* Remove cached PID/TID in cloneAdhemerval Zanella2016-11-241-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch remove the PID cache and usage in current GLIBC code. Current usage is mainly used a performance optimization to avoid the syscall, however it adds some issues: - The exposed clone syscall will try to set pid/tid to make the new thread somewhat compatible with current GLIBC assumptions. This cause a set of issue with new workloads and usecases (such as BZ#17214 and [1]) as well for new internal usage of clone to optimize other algorithms (such as clone plus CLONE_VM for posix_spawn, BZ#19957). - The caching complexity also added some bugs in the past [2] [3] and requires more effort of each port to handle such requirements (for both clone and vfork implementation). - Caching performance gain in mainly on getpid and some specific code paths. The getpid performance leverage is questionable [4], either by the idea of getpid being a hotspot as for the getpid implementation itself (if it is indeed a justifiable hotspot a vDSO symbol could let to a much more simpler solution). Other usage is mainly for non usual code paths, such as pthread cancellation signal and handling. For thread creation (on stack allocation) the code simplification in fact adds some performance gain due the no need of transverse the stack cache and invalidate each element pid. Other thread usages will require a direct getpid syscall, such as cancellation/setxid signal, thread cancellation, thread fail path (at create_thread), and thread signal (pthread_kill and pthread_sigqueue). However these are hardly usual hotspots and I think adding a syscall is justifiable. It also simplifies both the clone and vfork arch-specific implementation. And by review each fork implementation there are some discrepancies that this patch also solves: - microblaze clone/vfork does not set/reset the pid/tid field - hppa uses the default vfork implementation that fallback to fork. Since vfork is deprecated I do not think we should bother with it. The patch also removes the TID caching in clone. My understanding for such semantic is try provide some pthread usage after a user program issue clone directly (as done by thread creation with CLONE_PARENT_SETTID and pthread tid member). However, as stated before in multiple discussions threads, GLIBC provides clone syscalls without further supporting all this semantics. I ran a full make check on x86_64, x32, i686, armhf, aarch64, and powerpc64le. For sparc32, sparc64, and mips I ran the basic fork and vfork tests from posix/ folder (on a qemu system). So it would require further testing on alpha, hppa, ia64, m68k, nios2, s390, sh, and tile (I excluded microblaze because it is already implementing the patch semantic regarding clone/vfork). [1] https://codereview.chromium.org/800183004/ [2] https://sourceware.org/ml/libc-alpha/2006-07/msg00123.html [3] https://sourceware.org/bugzilla/show_bug.cgi?id=15368 [4] http://yarchive.net/comp/linux/getpid_caching.html * sysdeps/nptl/fork.c (__libc_fork): Remove pid cache setting. * nptl/allocatestack.c (allocate_stack): Likewise. (__reclaim_stacks): Likewise. (setxid_signal_thread): Obtain pid through syscall. * nptl/nptl-init.c (sigcancel_handler): Likewise. (sighandle_setxid): Likewise. * nptl/pthread_cancel.c (pthread_cancel): Likewise. * sysdeps/unix/sysv/linux/pthread_kill.c (__pthread_kill): Likewise. * sysdeps/unix/sysv/linux/pthread_sigqueue.c (pthread_sigqueue): Likewise. * sysdeps/unix/sysv/linux/createthread.c (create_thread): Likewise. * sysdeps/unix/sysv/linux/getpid.c: Remove file. * nptl/descr.h (struct pthread): Change comment about pid value. * nptl/pthread_getattr_np.c (pthread_getattr_np): Remove thread pid assert. * sysdeps/unix/sysv/linux/pthread-pids.h (__pthread_initialize_pids): Do not set pid value. * nptl_db/td_ta_thr_iter.c (iterate_thread_list): Remove thread pid cache check. * nptl_db/td_thr_validate.c (td_thr_validate): Likewise. * sysdeps/aarch64/nptl/tcb-offsets.sym: Remove pid offset. * sysdeps/alpha/nptl/tcb-offsets.sym: Likewise. * sysdeps/arm/nptl/tcb-offsets.sym: Likewise. * sysdeps/hppa/nptl/tcb-offsets.sym: Likewise. * sysdeps/i386/nptl/tcb-offsets.sym: Likewise. * sysdeps/ia64/nptl/tcb-offsets.sym: Likewise. * sysdeps/m68k/nptl/tcb-offsets.sym: Likewise. * sysdeps/microblaze/nptl/tcb-offsets.sym: Likewise. * sysdeps/mips/nptl/tcb-offsets.sym: Likewise. * sysdeps/nios2/nptl/tcb-offsets.sym: Likewise. * sysdeps/powerpc/nptl/tcb-offsets.sym: Likewise. * sysdeps/s390/nptl/tcb-offsets.sym: Likewise. * sysdeps/sh/nptl/tcb-offsets.sym: Likewise. * sysdeps/sparc/nptl/tcb-offsets.sym: Likewise. * sysdeps/tile/nptl/tcb-offsets.sym: Likewise. * sysdeps/x86_64/nptl/tcb-offsets.sym: Likewise. * sysdeps/unix/sysv/linux/aarch64/clone.S: Remove pid and tid caching. * sysdeps/unix/sysv/linux/alpha/clone.S: Likewise. * sysdeps/unix/sysv/linux/arm/clone.S: Likewise. * sysdeps/unix/sysv/linux/hppa/clone.S: Likewise. * sysdeps/unix/sysv/linux/i386/clone.S: Likewise. * sysdeps/unix/sysv/linux/ia64/clone2.S: Likewise. * sysdeps/unix/sysv/linux/mips/clone.S: Likewise. * sysdeps/unix/sysv/linux/nios2/clone.S: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/clone.S: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/clone.S: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/clone.S: Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/clone.S: Likewise. * sysdeps/unix/sysv/linux/sh/clone.S: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/clone.S: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/clone.S: Likewise. * sysdeps/unix/sysv/linux/tile/clone.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/clone.S: Likewise. * sysdeps/unix/sysv/linux/aarch64/vfork.S: Remove pid set and reset. * sysdeps/unix/sysv/linux/alpha/vfork.S: Likewise. * sysdeps/unix/sysv/linux/arm/vfork.S: Likewise. * sysdeps/unix/sysv/linux/i386/vfork.S: Likewise. * sysdeps/unix/sysv/linux/ia64/vfork.S: Likewise. * sysdeps/unix/sysv/linux/m68k/clone.S: Likewise. * sysdeps/unix/sysv/linux/m68k/vfork.S: Likewise. * sysdeps/unix/sysv/linux/mips/vfork.S: Likewise. * sysdeps/unix/sysv/linux/nios2/vfork.S: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/vfork.S: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/vfork.S: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/vfork.S: Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/vfork.S: Likewise. * sysdeps/unix/sysv/linux/sh/vfork.S: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/vfork.S: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/vfork.S: Likewise. * sysdeps/unix/sysv/linux/tile/vfork.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/vfork.S: Likewise. * sysdeps/unix/sysv/linux/tst-clone2.c (f): Remove direct pthread struct access. (clone_test): Remove function. (do_test): Rewrite to take in consideration pid is not cached anymore.
* Refactor float_t, double_t information into bits/flt-eval-method.h.Joseph Myers2016-11-241-6/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | At present, definitions of float_t and double_t are split among many bits/mathdef.h headers. For all but three architectures, these types are float and double. Furthermore, if you assume __FLT_EVAL_METHOD__ to be defined, that provides a more generic way of determining the correct values of these typedefs. Defining these typedefs more generally based on __FLT_EVAL_METHOD__ was previously proposed by Paul Eggert in <https://sourceware.org/ml/libc-alpha/2012-02/msg00002.html>. This patch refactors things in the way I proposed in <https://sourceware.org/ml/libc-alpha/2016-11/msg00745.html>. A new header bits/flt-eval-method.h defines a single macro, __GLIBC_FLT_EVAL_METHOD, which is then used by math.h to define float_t and double_t. The default is based on __FLT_EVAL_METHOD__ (although actually a default to 0 would have the same effect for current ports, because ports where values other than 0 or 16 are possible all have their own headers). To avoid changing the existing semantics in any case, including for compilers not defining __FLT_EVAL_METHOD__, architecture-specific files are then added for m68k, s390, x86 which replicate the existing semantics. At least with __FLT_EVAL_METHOD__ values possible with GCC, there should be no change to the choices of float_t and double_t for any supported configuration. Architecture maintainer notes: * m68k: sysdeps/m68k/m680x0/bits/flt-eval-method.h always defines __GLIBC_FLT_EVAL_METHOD to 2 to replicate the existing logic. But actually GCC defines __FLT_EVAL_METHOD__ to 0 if TARGET_68040. It might make sense to make the header prefer to base things on __FLT_EVAL_METHOD__ if defined, like the x86 version, and so make the choices of these types more accurate (with a NEWS entry as for the other changes to these types on particular architectures). * s390: sysdeps/s390/bits/flt-eval-method.h always defines __GLIBC_FLT_EVAL_METHOD to 1 to replicate the existing logic. As previously discussed, it might make sense in coordination with GCC to eliminate the historic mistake, avoid excess precision in the -fexcess-precision=standard case and make the typedefs match (with a NEWS entry, again). Tested for x86-64 and x86. Also did compilation-only testing with build-many-glibcs.py. * bits/flt-eval-method.h: New file. * sysdeps/m68k/m680x0/bits/flt-eval-method.h: Likewise. * sysdeps/s390/bits/flt-eval-method.h: Likewise. * sysdeps/x86/bits/flt-eval-method.h: Likewise. * math/Makefile (headers): Add bits/flt-eval-method.h. * math/math.h: Include <bits/flt-eval-method.h>. [__USE_ISOC99] (float_t): Define based on __GLIBC_FLT_EVAL_METHOD. [__USE_ISOC99] (double_t): Likewise. * bits/mathdef.h (float_t): Remove. (double_t): Likewise. * sysdeps/aarch64/bits/mathdef.h (float_t): Likewise. (double_t): Likewise. * sysdeps/alpha/bits/mathdef.h (float_t): Likewise. (double_t): Likewise. * sysdeps/arm/bits/mathdef.h (float_t): Likewise. (double_t): Likewise. * sysdeps/hppa/fpu/bits/mathdef.h (float_t): Likewise. (double_t): Likewise. * sysdeps/ia64/bits/mathdef.h (float_t): Likewise. (double_t): Likewise. * sysdeps/m68k/m680x0/bits/mathdef.h (float_t): Likewise. (double_t): Likewise. * sysdeps/mips/bits/mathdef.h (float_t): Likewise. (double_t): Likewise. * sysdeps/powerpc/bits/mathdef.h (float_t): Likewise. (double_t): Likewise. * sysdeps/s390/bits/mathdef.h (float_t): Likewise. (double_t): Likewise. * sysdeps/sh/sh4/bits/mathdef.h (float_t): Likewise. (double_t): Likewise. * sysdeps/sparc/bits/mathdef.h (float_t): Likewise. (double_t): Likewise. * sysdeps/tile/bits/mathdef.h (float_t): Likewise. (double_t): Likewise. * sysdeps/x86/bits/mathdef.h (float_t): Likewise. (double_t): Likewise.
* nptl: Document the reason why __kind in pthread_mutex_t is part of the ABIFlorian Weimer2016-11-071-1/+1
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* Do not hardcode platform names in manual/libm-err-tab.pl (bug 14139).Joseph Myers2016-11-041-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | manual/libm-err-tab.pl hardcodes a list of names for particular platforms (mapping from sysdeps directory name to friendly name for the manual). This goes against the principle of keeping information about individual platforms in their corresponding sysdeps directory, and the list is also very out-of-date regarding supported platforms and their corresponding sysdeps directories. This patch fixes this by adding a libm-test-ulps-name file alongside each libm-test-ulps file. The script then gets the friendly name from that file, which is required to exist, so it no longer needs to allow for the mapping being missing. Tested for x86_64. [BZ #14139] * manual/libm-err-tab.pl (%pplatforms): Initialize to empty. (find_files): Obtain platform name from libm-test-ulps-name and store in %pplatforms. (canonicalize_platform): Remove. (print_platforms): Use $pplatforms directly. (by_platforms): Do not allow for platforms missing from %pplatforms. * sysdeps/aarch64/libm-test-ulps-name: New file. * sysdeps/alpha/fpu/libm-test-ulps-name: Likewise. * sysdeps/arm/libm-test-ulps-name: Likewise. * sysdeps/generic/libm-test-ulps-name: Likewise. * sysdeps/hppa/fpu/libm-test-ulps-name: Likewise. * sysdeps/i386/fpu/libm-test-ulps-name: Likewise. * sysdeps/i386/i686/fpu/multiarch/libm-test-ulps-name: Likewise. * sysdeps/ia64/fpu/libm-test-ulps-name: Likewise. * sysdeps/m68k/coldfire/fpu/libm-test-ulps-name: Likewise. * sysdeps/m68k/m680x0/fpu/libm-test-ulps-name: Likewise. * sysdeps/microblaze/libm-test-ulps-name: Likewise. * sysdeps/mips/mips32/libm-test-ulps-name: Likewise. * sysdeps/mips/mips64/libm-test-ulps-name: Likewise. * sysdeps/nios2/libm-test-ulps-name: Likewise. * sysdeps/powerpc/fpu/libm-test-ulps-name: Likewise. * sysdeps/powerpc/nofpu/libm-test-ulps-name: Likewise. * sysdeps/s390/fpu/libm-test-ulps-name: Likewise. * sysdeps/sh/libm-test-ulps-name: Likewise. * sysdeps/sparc/fpu/libm-test-ulps-name: Likewise. * sysdeps/tile/libm-test-ulps-name: Likewise. * sysdeps/x86_64/fpu/libm-test-ulps-name: Likewise.
* Add strfromd, strfromf, and strfroml functionsGabriel F. T. Gomes2016-10-251-0/+3
| | | | | | | ISO/IEC TS 18661-1 adds several functions in the strfrom family to stdlib. This patch adds strfromd, strfromf, and strfroml. This is being done in preparation for the new floating-point type, float128. The added functions convert a floating-point value into a string, with configurable format.
* Use VSQRT instruction for ARM sqrt (bug 20660).Joseph Myers2016-10-202-0/+90
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch makes ARM sqrt and sqrtf use the VSQRT VFP square root instruction when available, instead of much larger generic code for computing square roots. Now, GCC will normally inline sqrt calls except for negative arguments where errno needs to be set, and because the benchtests fail to use -fno-builtin that means no significant difference in benchmark results for sqrt (note, however, there are lots of __ieee754_sqrt calls internally in libm, which are *not* inlined - although some architectures define __ieee754_sqrt in their math_private.h for that purpose, ARM doesn't - so improving out-of-line sqrt performance is still relevant to those other functions, if not for most ordinary direct users of sqrt). With the benchtests changed to use -fno-builtin for sqrt tests, typical performance results before the change are ("max" is wildly varying in any case): "duration": 9.88358e+09, "iterations": 4.8783e+07, "max": 457.764, "min": 183.105, "mean": 202.603 and after it are: "duration": 9.45663e+09, "iterations": 2.24385e+08, "max": 274.659, "min": 30.517, "mean": 42.1447 Tested for ARM (hard-float and soft-float). [BZ #20660] * sysdeps/arm/e_sqrt.c: New file. * sysdeps/arm/e_sqrtf.c: Likewise.
* Installed header hygiene (BZ#20366): Test of installed headers.Zack Weinberg2016-09-231-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds a test to ensure that the problems fixed in the last several patches do not recur. Each directory checks the headers that it installs for two properties: first, each header must be compilable in isolation, as both C and C++, under a representative combination of language and library conformance levels; second, there is a blacklist of identifiers that may not appear in any installed header, currently consisting of the legacy BSD typedefs. (There is an exemption for the headers that define those typedefs, and for the RPC headers. It may be necessary to make this more sophisticated if we add more stuff to the blacklist in the future.) In order for this test to work correctly, every wrapper header that actually defines something must guard those definitions with #ifndef _ISOMAC. This is the existing mechanism used by the conform/ tests to tell wrapper headers not to define anything that the public header wouldn't, and not to use anything from libc-symbols.h. conform/ only cares for headers that we need to check for standards conformance, whereas this test applies to *every* header. (Headers in include/ that are either installed directly, or are internal-use-only and do *not* correspond to any installed header, are not affected.) * scripts/check-installed-headers.sh: New script. * Rules: In each directory that defines header files to be installed, run check-installed-headers.sh on them as a special test. * Makefile: Likewise for the headers installed at top level. * include/aliases.h, include/alloca.h, include/argz.h * include/arpa/nameser.h, include/arpa/nameser_compat.h * include/elf.h, include/envz.h, include/err.h * include/execinfo.h, include/fpu_control.h, include/getopt.h * include/gshadow.h, include/ifaddrs.h, include/libintl.h * include/link.h, include/malloc.h, include/mcheck.h * include/mntent.h, include/netinet/ether.h * include/nss.h, include/obstack.h, include/printf.h * include/pty.h, include/resolv.h, include/rpc/auth.h * include/rpc/auth_des.h, include/rpc/auth_unix.h * include/rpc/clnt.h, include/rpc/des_crypt.h * include/rpc/key_prot.h, include/rpc/netdb.h * include/rpc/pmap_clnt.h, include/rpc/pmap_prot.h * include/rpc/pmap_rmt.h, include/rpc/rpc.h * include/rpc/rpc_msg.h, include/rpc/svc.h * include/rpc/svc_auth.h, include/rpc/xdr.h * include/rpcsvc/nis_callback.h, include/rpcsvc/nislib.h * include/rpcsvc/yp.h, include/rpcsvc/ypclnt.h * include/rpcsvc/ypupd.h, include/shadow.h * include/stdio_ext.h, include/sys/epoll.h * include/sys/file.h, include/sys/gmon.h, include/sys/ioctl.h * include/sys/prctl.h, include/sys/profil.h * include/sys/statfs.h, include/sys/sysctl.h * include/sys/sysinfo.h, include/ttyent.h, include/utmp.h * sysdeps/arm/nacl/include/bits/setjmp.h * sysdeps/mips/include/sys/asm.h * sysdeps/unix/sysv/linux/include/sys/sysinfo.h * sysdeps/unix/sysv/linux/include/sys/timex.h * sysdeps/x86/fpu/include/bits/fenv.h: Add #ifndef _ISOMAC guard around internal declarations. Add multiple-inclusion guard if not already present.
* Installed-header hygiene (BZ#20366): stack_t.Zack Weinberg2016-09-231-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | sys/ucontext.h unconditionally uses stack_t, and it does not make sense to change that. But signal.h only declares stack_t under __USE_XOPEN_EXTENDED || __USE_XOPEN2K8. The actual definition is already in a bits header, bits/sigstack.h, but that header insists on only being included by signal.h, so we have to change that as well as all of the sys/ucontext.h variants. (Some but not all variants of bits/sigcontext.h, which sys/ucontext.h may also need, had already received this adjustment; for consistency, I made them all the same, even if that's not strictly necessary in some configurations.) bits/sigcontext.h and bits/sigstack.h also all need to receive multiple inclusion guards. * sysdeps/generic/sys/ucontext.h * sysdeps/arm/sys/ucontext.h * sysdeps/i386/sys/ucontext.h * sysdeps/m68k/sys/ucontext.h * sysdeps/mips/sys/ucontext.h * sysdeps/unix/sysv/linux/aarch64/sys/ucontext.h * sysdeps/unix/sysv/linux/alpha/sys/ucontext.h * sysdeps/unix/sysv/linux/arm/sys/ucontext.h * sysdeps/unix/sysv/linux/hppa/sys/ucontext.h * sysdeps/unix/sysv/linux/ia64/sys/ucontext.h * sysdeps/unix/sysv/linux/m68k/sys/ucontext.h * sysdeps/unix/sysv/linux/mips/sys/ucontext.h * sysdeps/unix/sysv/linux/nios2/sys/ucontext.h * sysdeps/unix/sysv/linux/powerpc/sys/ucontext.h * sysdeps/unix/sysv/linux/s390/sys/ucontext.h * sysdeps/unix/sysv/linux/sh/sys/ucontext.h * sysdeps/unix/sysv/linux/sparc/sys/ucontext.h * sysdeps/unix/sysv/linux/tile/sys/ucontext.h * sysdeps/unix/sysv/linux/x86/sys/ucontext.h: Include both bits/sigcontext.h and bits/sigstack.h. Fix grammar error in comment, if present. * bits/sigstack.h * sysdeps/unix/sysv/linux/aarch64/bits/sigstack.h * sysdeps/unix/sysv/linux/alpha/bits/sigstack.h * sysdeps/unix/sysv/linux/bits/sigstack.h * sysdeps/unix/sysv/linux/ia64/bits/sigstack.h * sysdeps/unix/sysv/linux/mips/bits/sigstack.h * sysdeps/unix/sysv/linux/powerpc/bits/sigstack.h * sysdeps/unix/sysv/linux/sparc/bits/sigstack.h * bits/sigcontext.h * sysdeps/mach/hurd/i386/bits/sigcontext.h * sysdeps/unix/sysv/linux/bits/sigcontext.h * sysdeps/unix/sysv/linux/ia64/bits/sigcontext.h * sysdeps/unix/sysv/linux/sparc/bits/sigcontext.h: Add multiple inclusion guard. Permit inclusion by sys/ucontext.h as well as signal.h, if this was not already allowed. Request definition of size_t if necessary. Minimize semantically-null differences across files.
* Add femode_t functions: arm.Joseph Myers2016-09-072-0/+74
| | | | | | | This patch adds ARM versions of fegetmode and fesetmode. * sysdeps/arm/fegetmode.c: New file. * sysdeps/arm/fesetmode.c: Likewise.
* Add femode_t functions.Joseph Myers2016-09-071-0/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | TS 18661-1 defines a type femode_t to represent the set of dynamic floating-point control modes (such as the rounding mode and trap enablement modes), and functions fegetmode and fesetmode to manipulate those modes (without affecting other state such as the raised exception flags) and a corresponding macro FE_DFL_MODE. This patch series implements those interfaces for glibc. This first patch adds the architecture-independent pieces, the x86 and x86_64 implementations, and the <bits/fenv.h> and ABI baseline updates for all architectures so glibc keeps building and passing the ABI tests on all architectures. Subsequent patches add the fegetmode and fesetmode implementations for other architectures. femode_t is generally an integer type - the same type as fenv_t, or as the single element of fenv_t where fenv_t is a structure containing a single integer (or the single relevant element, where it has elements for both status and control registers) - except where architecture properties or consistency with the fenv_t implementation indicate otherwise. FE_DFL_MODE follows FE_DFL_ENV in whether it's a magic pointer value (-1 cast to const femode_t *), a value that can be distinguished from valid pointers by its high bits but otherwise contains a representation of the desired register contents, or a pointer to a constant variable (the powerpc case; __fe_dfl_mode is added as an exported constant object, an alias to __fe_dfl_env). Note that where architectures (that share a register between control and status bits) gain definitions of new floating-point control or status bits in future, the implementations of fesetmode for those architectures may need updating (depending on whether the new bits are control or status bits and what the implementation does with previously unknown bits), just like existing implementations of <fenv.h> functions that take care not to touch reserved bits may need updating when the set of reserved bits changes. (As any new bits are outside the scope of ISO C, that's just a quality-of-implementation issue for supporting them, not a conformance issue.) As with fenv_t, femode_t should properly include any software DFP rounding mode (and for both fenv_t and femode_t I'd consider that fragment of DFP support appropriate for inclusion in glibc even in the absence of the rest of libdfp; hardware DFP rounding modes should already be included if the definitions of which bits are status / control bits are correct). Tested for x86_64, x86, mips64 (hard float, and soft float to test the fallback version), arm (hard float) and powerpc (hard float, soft float and e500). Other architecture versions are untested. * math/fegetmode.c: New file. * math/fesetmode.c: Likewise. * sysdeps/i386/fpu/fegetmode.c: Likewise. * sysdeps/i386/fpu/fesetmode.c: Likewise. * sysdeps/x86_64/fpu/fegetmode.c: Likewise. * sysdeps/x86_64/fpu/fesetmode.c: Likewise. * math/fenv.h: Update comment on inclusion of <bits/fenv.h>. [__GLIBC_USE (IEC_60559_BFP_EXT)] (fegetmode): New function declaration. [__GLIBC_USE (IEC_60559_BFP_EXT)] (fesetmode): Likewise. * bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (femode_t): New typedef. [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. * sysdeps/aarch64/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (femode_t): New typedef. [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. * sysdeps/alpha/fpu/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (femode_t): New typedef. [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. * sysdeps/arm/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (femode_t): New typedef. [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. * sysdeps/hppa/fpu/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (femode_t): New typedef. [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. * sysdeps/ia64/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (femode_t): New typedef. [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. * sysdeps/m68k/fpu/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (femode_t): New typedef. [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. * sysdeps/microblaze/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (femode_t): New typedef. [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. * sysdeps/mips/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (femode_t): New typedef. [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. * sysdeps/nios2/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (femode_t): New typedef. [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. * sysdeps/powerpc/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (femode_t): New typedef. [__GLIBC_USE (IEC_60559_BFP_EXT)] (__fe_dfl_mode): New variable declaration. [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. * sysdeps/s390/fpu/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (femode_t): New typedef. [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. * sysdeps/sh/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (femode_t): New typedef. [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. * sysdeps/sparc/fpu/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (femode_t): New typedef. [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. * sysdeps/tile/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (femode_t): New typedef. [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. * sysdeps/x86/fpu/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (femode_t): New typedef. [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. * manual/arith.texi (FE_DFL_MODE): Document macro. (fegetmode): Document function. (fesetmode): Likewise. * math/Versions (fegetmode): New libm symbol at version GLIBC_2.25. (fesetmode): Likewise. * math/Makefile (libm-support): Add fegetmode and fesetmode. (tests): Add test-femode and test-femode-traps. * math/test-femode-traps.c: New file. * math/test-femode.c: Likewise. * sysdeps/powerpc/fpu/fenv_const.c (__fe_dfl_mode): Declare as alias for __fe_dfl_env. * sysdeps/powerpc/nofpu/fenv_const.c (__fe_dfl_mode): Likewise. * sysdeps/powerpc/powerpc32/e500/nofpu/fenv_const.c (__fe_dfl_mode): Likewise. * sysdeps/powerpc/Versions (__fe_dfl_mode): New libm symbol at version GLIBC_2.25. * 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.
* Add fesetexcept: arm.Joseph Myers2016-08-161-0/+38
| | | | | | This patch adds an ARM version of fesetexcept. * sysdeps/arm/fesetexcept.c: New file.
* Minimize sysdeps code involved in defining major/minor/makedev.Zack Weinberg2016-08-031-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Presently sys/sysmacros.h is entirely defined in sysdeps. This would mean that the deprecation logic coming up in the next patch would have to be written twice (in generic/ and unix/sysv/linux/). To avoid that, hoist all but the unavoidably system-dependent logic to misc/, leaving a bits/ header behind. This also promotes the Linux-specific encoding of dev_t, which accommodates 32-bit major and minor numbers in a 64-bit dev_t, to generic, as glibc's dev_t is always 64 bits wide. The former Linux implementation used inline functions to avoid evaluating arguments more than once. After this change, all platforms use inline functions, which means that three new symbols are added to the generic ABI. (These symbols are in the user namespace, which is how they have always been on Linux. They begin with "gnu_dev_", so collisions with user code are pretty unlikely.) New ports henceforth need only provide a bits/sysmacros.h defining internal macros __SYSMACROS_{DECLARE,DEFINE}_{MAJOR,MINOR,MAKEDEV}. This is only necessary if the kernel encoding is incompatible with the now-generic encoding (for instance, it would be necessary for FreeBSD). While I was at it, I added a basic round-trip test for these functions. * sysdeps/generic/sys/sysmacros.h: Delete file. * sysdeps/unix/sysv/linux/makedev.c: Delete file. * sysdeps/unix/sysv/linux/sys/sysmacros.h: Move file ... * bits/sysmacros.h: ... here; this encoding is now the generic encoding. Now defines only the following macros: __SYSMACROS_DECLARE_MAJOR, __SYSMACROS_DEFINE_MAJOR, __SYSMACROS_DECLARE_MINOR, __SYSMACROS_DEFINE_MINOR, __SYSMACROS_DECLARE_MAKEDEV, __SYSMACROS_DEFINE_MAKEDEV. * misc/sys/sysmacros.h, misc/makedev.c: New files that use bits/sysmacros.h and the above new macros to generate the public implementations of major, minor, and makedev. * misc/tst-makedev.c: New test. * include/sys/sysmacros.h: New wrapper. * misc/Makefile (headers): Add sys/sysmacros.h, bits/sysmacros.h. (routines): Add makedev. (tests): Add tst-makedev. * misc/Versions [GLIBC_2.25]: Add gnu_dev_major, gnu_dev_minor, gnu_dev_makedev. * posix/Makefile (headers): Remove sys/sysmacros.h. * sysdeps/unix/sysv/linux/Makefile (sysdep_routines): Remove makedev. * sysdeps/arm/nacl/libc.abilist: Add GLIBC_2.25, gnu_dev_major, gnu_dev_makedev, gnu_dev_minor. * sysdeps/unix/sysv/linux/aarch64/libc.abilist * sysdeps/unix/sysv/linux/alpha/libc.abilist * sysdeps/unix/sysv/linux/arm/libc.abilist * sysdeps/unix/sysv/linux/hppa/libc.abilist * sysdeps/unix/sysv/linux/i386/libc.abilist * sysdeps/unix/sysv/linux/ia64/libc.abilist * sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist * sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist * sysdeps/unix/sysv/linux/microblaze/libc.abilist * sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist * sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist * sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist * sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist * sysdeps/unix/sysv/linux/nios2/libc.abilist * sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist * sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist * sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist * sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist * sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist * sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist * sysdeps/unix/sysv/linux/sh/libc.abilist * sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist * sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist * sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libc.abilist * sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libc.abilist * sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist * sysdeps/unix/sysv/linux/x86_64/64/libc.abilist * sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist: Add GLIBC_2.25.
* Remove atomic_compare_and_exchange_bool_rel.Torvald Riegel2016-06-241-4/+0
| | | | | | | | | | | | | | | | | | | | | | | | atomic_compare_and_exchange_bool_rel and catomic_compare_and_exchange_bool_rel are removed and replaced with the new C11-like atomic_compare_exchange_weak_release. The concurrent code in nscd/cache.c has not been reviewed yet, so this patch does not add detailed comments. * nscd/cache.c (cache_add): Use new C11-like atomic operation instead of atomic_compare_and_exchange_bool_rel. * nptl/pthread_mutex_unlock.c (__pthread_mutex_unlock_full): Likewise. * include/atomic.h (atomic_compare_and_exchange_bool_rel, catomic_compare_and_exchange_bool_rel): Remove. * sysdeps/aarch64/atomic-machine.h (atomic_compare_and_exchange_bool_rel): Likewise. * sysdeps/alpha/atomic-machine.h (atomic_compare_and_exchange_bool_rel): Likewise. * sysdeps/arm/atomic-machine.h (atomic_compare_and_exchange_bool_rel): Likewise. * sysdeps/mips/atomic-machine.h (atomic_compare_and_exchange_bool_rel): Likewise. * sysdeps/tile/atomic-machine.h (atomic_compare_and_exchange_bool_rel): Likewise.
* elf: Consolidate machine-agnostic DTV definitions in <dl-dtv.h>Florian Weimer2016-06-202-14/+1
| | | | | Identical definitions of dtv_t and TLS_DTV_UNALLOCATED were repeated for all architectures using DTVs.
* Bug 20198: quick_exit should not call destructors.Carlos O'Donell2016-06-061-0/+1
| | | | | | | | | | | | | | | | | | In C++11 18.5.12 says "Objects shall not be destroyed as a result of calling quick_exit." In C11 quick_exit is silent about thread object destruction. Therefore to make glibc C++ compliant we do not call any thread local destructors. A new regression test verifies the fix. I will note that C++11 18.5.3 makes it clear that C++ defines additional requirements for _Exit() to prevent it from executing destructors. Given that the point of _Exit() is to terminate the process immediately it makes sense the C and C++ should line up and avoid calling destructors. No failures. New regtest passes.
* Fix building glibc master with NDEBUG and --with-cpu.Carlos O'Donell2016-03-151-1/+1
| | | | | | | | | | When building on i686, x86_64, and arm, and with NDEBUG, or --with-cpu there are various variables and functions which are unused based on these settings. This patch marks all such variables with __attribute__((unused)) to avoid the compiler warnings when building with the aformentioned options.
* Add fts64_* to sysdeps/arm/nacl/libc.abilistRoland McGrath2016-02-221-0/+6
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* Fix ulps regeneration for *-finite tests.Joseph Myers2016-01-191-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On running tests after from-scratch ulps regeneration, I found that some libm tests failed with ulps in excess of those recorded in the from-scratch regeneration, which should never happen unless those ulps exceed the limit on ulps that can go in libm-test-ulps files. Failure: Test: atan2_upward (inf, -inf) Result: is: 2.35619498e+00 0x1.2d97ccp+1 should be: 2.35619450e+00 0x1.2d97c8p+1 difference: 4.76837159e-07 0x1.000000p-21 ulp : 2.0000 max.ulp : 1.0000 Maximal error of `atan2_upward' is : 2 ulp accepted: 1 ulp Failure: Test: carg_upward (-inf + inf i) Result: is: 2.35619498e+00 0x1.2d97ccp+1 should be: 2.35619450e+00 0x1.2d97c8p+1 difference: 4.76837159e-07 0x1.000000p-21 ulp : 2.0000 max.ulp : 1.0000 Maximal error of `carg_upward' is : 2 ulp accepted: 1 ulp The problem comes from the addition of tests for the finite-math-only versions of libm functions. Those tests share ulps with the default function variants. make regen-ulps runs the default tests before the finite-math-only tests, concatenating the resulting ulps before feeding them to gen-libm-test.pl to generate a new libm-test-ulps file. But gen-libm-test.pl always takes the last ulps value given for any (function, type) pair. So, if the largest ulps for a function come from non-finite inputs, a from-scratch regeneration loses those ulps. This patch fixes gen-libm-test.pl, in the case where there are multiple ulps values for a (function, type) pair - which can only happen as part of a regeneration - to take the largest ulps value rather than the last one. Tested for ARM / MIPS / powerpc-nofpu. * math/gen-libm-test.pl (parse_ulps): Do not reduce already-recorded ulps. * sysdeps/arm/libm-test-ulps: Regenerated. * sysdeps/mips/mips32/libm-test-ulps: Likewise. * sysdeps/mips/mips64/libm-test-ulps: Likewise. * sysdeps/powerpc/nofpu/libm-test-ulps: Likewise.
* Regenerate ARM libm-test-ulps.Joseph Myers2016-01-181-2/+4
| | | | * sysdeps/arm/libm-test-ulps: Regenerated.
* S/390: Do not raise inexact exception in lrint/lround. [BZ #19486]Stefan Liebler2016-01-181-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I get some math test-failures on s390 for float/double/ldouble for various lrint/lround functions like: lrint (0x1p64): Exception "Inexact" set lrint (-0x1p64): Exception "Inexact" set lround (0x1p64): Exception "Inexact" set lround (-0x1p64): Exception "Inexact" set ... GCC emits "convert to fixed" instructions for casting floating point values to integer values. These instructions raise invalid and inexact exceptions if the floating point value exceeds the integer type ranges. This patch enables the various FIX_DBL_LONG_CONVERT_OVERFLOW macros in order to avoid a cast from floating point to integer type and raise the invalid exception with feraiseexcept. The ldbl-128 rint/round functions are now using the same logic. ChangeLog: [BZ #19486] * sysdeps/s390/fix-fp-int-convert-overflow.h: New File. * sysdeps/generic/fix-fp-int-convert-overflow.h (FIX_LDBL_LONG_CONVERT_OVERFLOW, FIX_LDBL_LLONG_CONVERT_OVERFLOW): New define. * sysdeps/arm/fix-fp-int-convert-overflow.h: Likewise. * sysdeps/mips/mips32/fpu/fix-fp-int-convert-overflow.h: Likewise. * sysdeps/ieee754/ldbl-128/s_lrintl.c (__lrintl): Avoid conversions to long int where inexact exceptions could be raised. * sysdeps/ieee754/ldbl-128/s_lroundl.c (__lroundl): Likewise. * sysdeps/ieee754/ldbl-128/s_llrintl.c (__llrintl): Avoid conversions to long long int where inexact exceptions could be raised. * sysdeps/ieee754/ldbl-128/s_llroundl.c (__llroundl): Likewise.
* Update copyright dates with scripts/update-copyrights.Joseph Myers2016-01-04114-114/+114
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* math: add LDBL_CLASSIFY_COMPAT supportChris Metcalf2015-12-031-0/+4
| | | | | | | | | | | | | | | | | If a platform does not define "long-double-fcts = yes" in its Makefiles and it does define __NO_LONG_DOUBLE_MATH in its installed headers, it will currently create exported symbols for __finitel, __isinfl, and __isnanl that can't be reached from userspace by correct use of the finite(), isinf(), or isnan() macros in <math.h>. To avoid this situation, by default for such platforms we now no longer export these symbols, thus causing appropriate link-time errors. However, for platforms that previously exported these symbols, we continue to do so as compat symbols; this is enabled by adding LDBL_CLASSIFY_COMPAT to math_private.h for the platform. For tile, remove the now-unnecessary exports of those functions from libc and libm.
* Fix math_private.h multiple include guards.Joseph Myers2015-11-201-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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.
* Simplify the abilist formatFlorian Weimer2015-11-061-1837/+1836
| | | | | | | | | | | | | | | 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.
* Remove miscellaneous GCC >= 4.7 version conditionals.Joseph Myers2015-11-041-6/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch removes miscellaneous __GNUC_PREREQ (4, 7) conditionals that are now dead. Tested for x86_64 and x86 (testsuite, and that installed stripped shared libraries are unchanged by the patch). * sysdeps/arm/atomic-machine.h [__GNUC_PREREQ (4, 7) && __GCC_HAVE_SYNC_COMPARE_AND_SWAP_4]: Change conditional to [__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4]. [__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4 && !__GNUC_PREREQ (4, 7)]: Remove conditional code. [!__GNUC_PREREQ (4, 7) || !__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4]: Change conditional to [!__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4]. * sysdeps/i386/sysdep.h [__ASSEMBLER__ && __GNUC_PREREQ (4, 7)]: Change conditional to [__ASSEMBLER__]. [__ASSEMBLER__ && !__GNUC_PREREQ (4, 7)]: Remove conditional code. [!__ASSEMBLER__ && __GNUC_PREREQ (4, 7)]: Change conditional to [!__ASSEMBLER__]. [!__ASSEMBLER__ && !__GNUC_PREREQ (4, 7)]: Remove conditional code. * sysdeps/unix/sysv/linux/sh/atomic-machine.h (rNOSP): Remove conditional macro definitions. (__arch_compare_and_exchange_val_8_acq): Use "u" instead of rNOSP. (__arch_compare_and_exchange_val_16_acq): Likewise. (__arch_compare_and_exchange_val_32_acq): Likewise. (atomic_exchange_and_add): Likewise. (atomic_add): Likewise. (atomic_add_negative): Likewise. (atomic_add_zero): Likewise. (atomic_bit_set): Likewise. (atomic_bit_test_set): Likewise. * sysdeps/x86_64/atomic-machine.h [__GNUC_PREREQ (4, 7)]: Make code unconditional. [!__GNUC_PREREQ (4, 7)]: Remove conditional code.
* Remove configure test for ARM TLS descriptors support.Joseph Myers2015-10-273-49/+5
| | | | | | | | | | | | | | | | GCC 4.7 added support for ARM TLS descriptors. The binutils support is present in binutils 2.22. Thus, this patch removes the associated configure test as obsolete (leaving Makefile conditionals, as NaCl sets have-arm-tls-desc = no in its sysdeps fragment). Tested for ARM that installed shared libraries are unchanged by the patch. * sysdeps/arm/configure.ac (libc_cv_arm_tls_desc): Remove configure test. * sysdeps/arm/configure: Regenerated. * sysdeps/arm/Makefile [!have-arm-tls-desc] (have-arm-tls-desc): Define variable if not already defined.
* Convert 231 sysdeps function definitions to prototype style.Joseph Myers2015-10-191-3/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This mostly automatically-generated patch converts 231 sysdeps function definitions in glibc from old-style K&R to prototype-style. For __aio_sigqueue and __gai_sigqueue I had to add internal_function to the definitions as noted by Florian in <https://sourceware.org/ml/libc-alpha/2015-10/msg00595.html> to keep the functions compiling on x86 after conversion to prototype definitions. Otherwise, the patch is automatically generated with all the same exclusions and caveats as in <https://sourceware.org/ml/libc-alpha/2015-10/msg00594.html> except that it's a patch for sysdeps files. Tested for x86_64 and x86 (testsuite, and that installed stripped shared libraries are unchanged by the patch). Also tested for arm, mips64 and powerpc32 that installed stripped shared libraries are unchanged by the patch. * sysdeps/arm/backtrace.c (__backtrace): Convert to prototype-style function definition. * sysdeps/i386/backtrace.c (__backtrace): Likewise. * sysdeps/i386/ffs.c (__ffs): Likewise. * sysdeps/i386/i686/ffs.c (__ffs): Likewise. * sysdeps/ia64/nptl/pthread_spin_lock.c (pthread_spin_lock): Likewise. * sysdeps/ia64/nptl/pthread_spin_trylock.c (pthread_spin_trylock): Likewise. * sysdeps/ieee754/ldbl-128/e_log2l.c (__ieee754_log2l): Likewise. * sysdeps/ieee754/ldbl-128ibm/e_log2l.c (__ieee754_log2l): Likewise. * sysdeps/m68k/ffs.c (__ffs): Likewise. * sysdeps/m68k/m680x0/fpu/e_acos.c (FUNC): Likewise. * sysdeps/m68k/m680x0/fpu/e_fmod.c (FUNC): Likewise. * sysdeps/mach/adjtime.c (__adjtime): Likewise. * sysdeps/mach/gettimeofday.c (__gettimeofday): Likewise. * sysdeps/mach/hurd/_exit.c (_exit): Likewise. * sysdeps/mach/hurd/access.c (__access): Likewise. * sysdeps/mach/hurd/adjtime.c (__adjtime): Likewise. * sysdeps/mach/hurd/chdir.c (__chdir): Likewise. * sysdeps/mach/hurd/chmod.c (__chmod): Likewise. * sysdeps/mach/hurd/chown.c (__chown): Likewise. * sysdeps/mach/hurd/cthreads.c (cthread_keycreate): Likewise. (cthread_getspecific): Likewise. (cthread_setspecific): Likewise. (__libc_getspecific): Likewise. * sysdeps/mach/hurd/euidaccess.c (__euidaccess): Likewise. * sysdeps/mach/hurd/faccessat.c (faccessat): Likewise. * sysdeps/mach/hurd/fchdir.c (__fchdir): Likewise. * sysdeps/mach/hurd/fchmod.c (__fchmod): Likewise. * sysdeps/mach/hurd/fchmodat.c (fchmodat): Likewise. * sysdeps/mach/hurd/fchown.c (__fchown): Likewise. * sysdeps/mach/hurd/fchownat.c (fchownat): Likewise. * sysdeps/mach/hurd/flock.c (__flock): Likewise. * sysdeps/mach/hurd/fsync.c (fsync): Likewise. * sysdeps/mach/hurd/ftruncate.c (__ftruncate): Likewise. * sysdeps/mach/hurd/getgroups.c (__getgroups): Likewise. * sysdeps/mach/hurd/gethostname.c (__gethostname): Likewise. * sysdeps/mach/hurd/getitimer.c (__getitimer): Likewise. * sysdeps/mach/hurd/getlogin_r.c (__getlogin_r): Likewise. * sysdeps/mach/hurd/getpgid.c (__getpgid): Likewise. * sysdeps/mach/hurd/getrusage.c (__getrusage): Likewise. * sysdeps/mach/hurd/getsockname.c (__getsockname): Likewise. * sysdeps/mach/hurd/group_member.c (__group_member): Likewise. * sysdeps/mach/hurd/isatty.c (__isatty): Likewise. * sysdeps/mach/hurd/lchown.c (__lchown): Likewise. * sysdeps/mach/hurd/link.c (__link): Likewise. * sysdeps/mach/hurd/linkat.c (linkat): Likewise. * sysdeps/mach/hurd/listen.c (__listen): Likewise. * sysdeps/mach/hurd/mkdir.c (__mkdir): Likewise. * sysdeps/mach/hurd/mkdirat.c (mkdirat): Likewise. * sysdeps/mach/hurd/openat.c (__openat): Likewise. * sysdeps/mach/hurd/poll.c (__poll): Likewise. * sysdeps/mach/hurd/readlink.c (__readlink): Likewise. * sysdeps/mach/hurd/readlinkat.c (readlinkat): Likewise. * sysdeps/mach/hurd/recv.c (__recv): Likewise. * sysdeps/mach/hurd/rename.c (rename): Likewise. * sysdeps/mach/hurd/renameat.c (renameat): Likewise. * sysdeps/mach/hurd/revoke.c (revoke): Likewise. * sysdeps/mach/hurd/rewinddir.c (__rewinddir): Likewise. * sysdeps/mach/hurd/rmdir.c (__rmdir): Likewise. * sysdeps/mach/hurd/seekdir.c (seekdir): Likewise. * sysdeps/mach/hurd/send.c (__send): Likewise. * sysdeps/mach/hurd/setdomain.c (setdomainname): Likewise. * sysdeps/mach/hurd/setegid.c (setegid): Likewise. * sysdeps/mach/hurd/seteuid.c (seteuid): Likewise. * sysdeps/mach/hurd/setgid.c (__setgid): Likewise. * sysdeps/mach/hurd/setgroups.c (setgroups): Likewise. * sysdeps/mach/hurd/sethostid.c (sethostid): Likewise. * sysdeps/mach/hurd/sethostname.c (sethostname): Likewise. * sysdeps/mach/hurd/setlogin.c (setlogin): Likewise. * sysdeps/mach/hurd/setpgid.c (__setpgid): Likewise. * sysdeps/mach/hurd/setregid.c (__setregid): Likewise. * sysdeps/mach/hurd/setreuid.c (__setreuid): Likewise. * sysdeps/mach/hurd/settimeofday.c (__settimeofday): Likewise. * sysdeps/mach/hurd/setuid.c (__setuid): Likewise. * sysdeps/mach/hurd/shutdown.c (shutdown): Likewise. * sysdeps/mach/hurd/sigaction.c (__sigaction): Likewise. * sysdeps/mach/hurd/sigaltstack.c (__sigaltstack): Likewise. * sysdeps/mach/hurd/sigpending.c (sigpending): Likewise. * sysdeps/mach/hurd/sigprocmask.c (__sigprocmask): Likewise. * sysdeps/mach/hurd/sigsuspend.c (__sigsuspend): Likewise. * sysdeps/mach/hurd/socket.c (__socket): Likewise. * sysdeps/mach/hurd/symlink.c (__symlink): Likewise. * sysdeps/mach/hurd/symlinkat.c (symlinkat): Likewise. * sysdeps/mach/hurd/telldir.c (telldir): Likewise. * sysdeps/mach/hurd/truncate.c (__truncate): Likewise. * sysdeps/mach/hurd/umask.c (__umask): Likewise. * sysdeps/mach/hurd/unlink.c (__unlink): Likewise. * sysdeps/mach/hurd/unlinkat.c (unlinkat): Likewise. * sysdeps/mips/mips64/__longjmp.c (__longjmp): Likewise. * sysdeps/posix/alarm.c (alarm): Likewise. * sysdeps/posix/cuserid.c (cuserid): Likewise. * sysdeps/posix/dirfd.c (dirfd): Likewise. * sysdeps/posix/dup.c (__dup): Likewise. * sysdeps/posix/dup2.c (__dup2): Likewise. * sysdeps/posix/euidaccess.c (euidaccess): Likewise. (main): Likewise. * sysdeps/posix/flock.c (__flock): Likewise. * sysdeps/posix/fpathconf.c (__fpathconf): Likewise. * sysdeps/posix/getcwd.c (__getcwd): Likewise. * sysdeps/posix/gethostname.c (__gethostname): Likewise. * sysdeps/posix/gettimeofday.c (__gettimeofday): Likewise. * sysdeps/posix/isatty.c (__isatty): Likewise. * sysdeps/posix/killpg.c (killpg): Likewise. * sysdeps/posix/libc_fatal.c (__libc_fatal): Likewise. * sysdeps/posix/mkfifoat.c (mkfifoat): Likewise. * sysdeps/posix/raise.c (raise): Likewise. * sysdeps/posix/remove.c (remove): Likewise. * sysdeps/posix/rename.c (rename): Likewise. * sysdeps/posix/rewinddir.c (__rewinddir): Likewise. * sysdeps/posix/seekdir.c (seekdir): Likewise. * sysdeps/posix/sigblock.c (__sigblock): Likewise. * sysdeps/posix/sigignore.c (sigignore): Likewise. * sysdeps/posix/sigintr.c (siginterrupt): Likewise. * sysdeps/posix/signal.c (__bsd_signal): Likewise. * sysdeps/posix/sigset.c (sigset): Likewise. * sysdeps/posix/sigsuspend.c (__sigsuspend): Likewise. * sysdeps/posix/sysconf.c (__sysconf): Likewise. * sysdeps/posix/sysv_signal.c (__sysv_signal): Likewise. * sysdeps/posix/time.c (time): Likewise. * sysdeps/posix/ttyname.c (getttyname): Likewise. (ttyname): Likewise. * sysdeps/posix/ttyname_r.c (__ttyname_r): Likewise. * sysdeps/posix/utime.c (utime): Likewise. * sysdeps/powerpc/fpu/s_isnan.c (__isnan): Likewise. * sysdeps/powerpc/nptl/pthread_spin_lock.c (pthread_spin_lock): Likewise. * sysdeps/powerpc/nptl/pthread_spin_trylock.c (pthread_spin_trylock): Likewise. * sysdeps/pthread/aio_error.c (aio_error): Likewise. * sysdeps/pthread/aio_read.c (aio_read): Likewise. * sysdeps/pthread/aio_read64.c (aio_read64): Likewise. * sysdeps/pthread/aio_write.c (aio_write): Likewise. * sysdeps/pthread/aio_write64.c (aio_write64): Likewise. * sysdeps/pthread/flockfile.c (__flockfile): Likewise. * sysdeps/pthread/ftrylockfile.c (__ftrylockfile): Likewise. * sysdeps/pthread/funlockfile.c (__funlockfile): Likewise. * sysdeps/pthread/timer_create.c (timer_create): Likewise. * sysdeps/pthread/timer_getoverr.c (timer_getoverrun): Likewise. * sysdeps/pthread/timer_gettime.c (timer_gettime): Likewise. * sysdeps/s390/ffs.c (__ffs): Likewise. * sysdeps/s390/nptl/pthread_spin_lock.c (pthread_spin_lock): Likewise. * sysdeps/s390/nptl/pthread_spin_trylock.c (pthread_spin_trylock): Likewise. * sysdeps/sh/nptl/pthread_spin_lock.c (pthread_spin_lock): Likewise. * sysdeps/sparc/nptl/pthread_barrier_destroy.c (pthread_barrier_destroy): Likewise. * sysdeps/sparc/nptl/pthread_barrier_wait.c (__pthread_barrier_wait): Likewise. * sysdeps/sparc/sparc32/e_sqrt.c (__ieee754_sqrt): Likewise. * sysdeps/sparc/sparc32/pthread_barrier_wait.c (__pthread_barrier_wait): Likewise. * sysdeps/sparc/sparc32/sem_init.c (__old_sem_init): Likewise. * sysdeps/tile/memcmp.c (memcmp_common_alignment): Likewise. (memcmp_not_common_alignment): Likewise. (MEMCMP): Likewise. * sysdeps/tile/wordcopy.c (_wordcopy_fwd_aligned): Likewise. (_wordcopy_fwd_dest_aligned): Likewise. (_wordcopy_bwd_aligned): Likewise. (_wordcopy_bwd_dest_aligned): Likewise. * sysdeps/unix/bsd/ftime.c (ftime): Likewise. * sysdeps/unix/bsd/gtty.c (gtty): Likewise. * sysdeps/unix/bsd/stty.c (stty): Likewise. * sysdeps/unix/bsd/tcflow.c (tcflow): Likewise. * sysdeps/unix/bsd/tcflush.c (tcflush): Likewise. * sysdeps/unix/bsd/tcgetattr.c (__tcgetattr): Likewise. * sysdeps/unix/bsd/tcgetpgrp.c (tcgetpgrp): Likewise. * sysdeps/unix/bsd/tcsendbrk.c (tcsendbreak): Likewise. * sysdeps/unix/bsd/tcsetattr.c (tcsetattr): Likewise. * sysdeps/unix/bsd/tcsetpgrp.c (tcsetpgrp): Likewise. * sysdeps/unix/bsd/ualarm.c (ualarm): Likewise. * sysdeps/unix/bsd/wait3.c (__wait3): Likewise. * sysdeps/unix/getlogin_r.c (__getlogin_r): Likewise. * sysdeps/unix/sockatmark.c (sockatmark): Likewise. * sysdeps/unix/stime.c (stime): Likewise. * sysdeps/unix/sysv/linux/_exit.c (_exit): Likewise. * sysdeps/unix/sysv/linux/aio_sigqueue.c (__aio_sigqueue): Likewise. Use internal_function. * sysdeps/unix/sysv/linux/arm/sigaction.c (__libc_sigaction): Convert to prototype-style function definition. * sysdeps/unix/sysv/linux/faccessat.c (faccessat): Likewise. * sysdeps/unix/sysv/linux/fchmodat.c (fchmodat): Likewise. * sysdeps/unix/sysv/linux/fpathconf.c (__fpathconf): Likewise. * sysdeps/unix/sysv/linux/gai_sigqueue.c (__gai_sigqueue): Likewise. Use internal_function. * sysdeps/unix/sysv/linux/gethostid.c (sethostid): Convert to prototype-style function definition * sysdeps/unix/sysv/linux/getlogin_r.c (__getlogin_r_loginuid): Likewise. (__getlogin_r): Likewise. * sysdeps/unix/sysv/linux/getpt.c (__posix_openpt): Likewise. * sysdeps/unix/sysv/linux/hppa/pthread_cond_broadcast.c (__pthread_cond_broadcast): Likewise. * sysdeps/unix/sysv/linux/hppa/pthread_cond_destroy.c (__pthread_cond_destroy): Likewise. * sysdeps/unix/sysv/linux/hppa/pthread_cond_init.c (__pthread_cond_init): Likewise. * sysdeps/unix/sysv/linux/hppa/pthread_cond_signal.c (__pthread_cond_signal): Likewise. * sysdeps/unix/sysv/linux/hppa/pthread_cond_wait.c (__pthread_cond_wait): Likewise. * sysdeps/unix/sysv/linux/i386/getmsg.c (getmsg): Likewise. * sysdeps/unix/sysv/linux/i386/setegid.c (setegid): Likewise. * sysdeps/unix/sysv/linux/ia64/sigaction.c (__libc_sigaction): Likewise. * sysdeps/unix/sysv/linux/ia64/sigpending.c (sigpending): Likewise. * sysdeps/unix/sysv/linux/ia64/sigprocmask.c (__sigprocmask): Likewise. * sysdeps/unix/sysv/linux/mips/sigaction.c (__libc_sigaction): Likewise. * sysdeps/unix/sysv/linux/msgget.c (msgget): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/ftruncate64.c (__ftruncate64): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/truncate64.c (truncate64): Likewise. * sysdeps/unix/sysv/linux/pt-raise.c (raise): Likewise. * sysdeps/unix/sysv/linux/pthread_getcpuclockid.c (pthread_getcpuclockid): Likewise. * sysdeps/unix/sysv/linux/pthread_getname.c (pthread_getname_np): Likewise. * sysdeps/unix/sysv/linux/pthread_setname.c (pthread_setname_np): Likewise. * sysdeps/unix/sysv/linux/pthread_sigmask.c (pthread_sigmask): Likewise. * sysdeps/unix/sysv/linux/pthread_sigqueue.c (pthread_sigqueue): Likewise. * sysdeps/unix/sysv/linux/raise.c (raise): Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/sigaction.c (__libc_sigaction): Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/sigpending.c (sigpending): Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/sigprocmask.c (__sigprocmask): Likewise. * sysdeps/unix/sysv/linux/semget.c (semget): Likewise. * sysdeps/unix/sysv/linux/semop.c (semop): Likewise. * sysdeps/unix/sysv/linux/setrlimit64.c (setrlimit64): Likewise. * sysdeps/unix/sysv/linux/shmat.c (shmat): Likewise. * sysdeps/unix/sysv/linux/shmdt.c (shmdt): Likewise. * sysdeps/unix/sysv/linux/shmget.c (shmget): Likewise. * sysdeps/unix/sysv/linux/sigaction.c (__libc_sigaction): Likewise. * sysdeps/unix/sysv/linux/sigpending.c (sigpending): Likewise. * sysdeps/unix/sysv/linux/sigprocmask.c (__sigprocmask): Likewise. * sysdeps/unix/sysv/linux/sigqueue.c (__sigqueue): Likewise. * sysdeps/unix/sysv/linux/sigstack.c (sigstack): Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/sigpending.c (sigpending): Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/sigprocmask.c (__sigprocmask): Likewise. * sysdeps/unix/sysv/linux/speed.c (cfgetospeed): Likewise. (cfgetispeed): Likewise. (cfsetospeed): Likewise. (cfsetispeed): Likewise. * sysdeps/unix/sysv/linux/tcflow.c (tcflow): Likewise. * sysdeps/unix/sysv/linux/tcflush.c (tcflush): Likewise. * sysdeps/unix/sysv/linux/tcgetattr.c (__tcgetattr): Likewise. * sysdeps/unix/sysv/linux/tcsetattr.c (tcsetattr): Likewise. * sysdeps/unix/sysv/linux/time.c (time): Likewise. * sysdeps/unix/sysv/linux/timer_create.c (timer_create): Likewise. * sysdeps/unix/sysv/linux/timer_delete.c (timer_delete): Likewise. * sysdeps/unix/sysv/linux/timer_getoverr.c (timer_getoverrun): Likewise. * sysdeps/unix/sysv/linux/timer_gettime.c (timer_gettime): Likewise. * sysdeps/unix/sysv/linux/x86_64/sigpending.c (sigpending): Likewise. * sysdeps/unix/sysv/linux/x86_64/sigprocmask.c (__sigprocmask): Likewise. * sysdeps/x86_64/backtrace.c (__backtrace): Likewise.
* Remove -fexceptions configure test.Joseph Myers2015-10-152-9/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There is a configure test for -fexceptions. This option was added in GCC 2.8, so the test is obsolete - and indeed plenty of code is using -fexceptions directly. This patch removes the configure test and makes all uses of $(exceptions) use -fexceptions directly. Tested for x86_64 and x86 (testsuite, and that installed shared libraries are unchanged by the patch). * configure.ac (libc_cv_gcc_exceptions): Remove configure test. * configure: Regenerated. * sysdeps/arm/configure.ac (libc_cv_gcc_exceptions): Do not set variable. (exceptions): Likewise. * sysdeps/arm/configure: Regenerated. * config.make.in (exceptions): Remove variable. * Makeconfig (uses-callbacks): Use -fexceptions instead of $(exceptions). * debug/Makefile (CFLAGS-dprintf_chk.c): Likewise. (CFLAGS-vdprintf_chk.c): Likewise. (CFLAGS-printf_chk.c): Likewise. (CFLAGS-fprintf_chk.c): Likewise. (CFLAGS-vprintf_chk.c): Likewise. (CFLAGS-vfprintf_chk.c): Likewise. (CFLAGS-gets_chk.c): Likewise. (CFLAGS-fgets_chk.c): Likewise. (CFLAGS-fgets_u_chk.c): Likewise. (CFLAGS-fread_chk.c): Likewise. (CFLAGS-fread_u_chk.c): Likewise. (CFLAGS-wprintf_chk.c): Likewise. (CFLAGS-fwprintf_chk.c): Likewise. (CFLAGS-vwprintf_chk.c): Likewise. (CFLAGS-vfwprintf_chk.c): Likewise. (CFLAGS-fgetws_chk.c): Likewise. (CFLAGS-fgetws_u_chk.c): Likewise. * libio/Makefile (CFLAGS-fileops.c): Likewise. (CFLAGS-fputc.c): Likewise. (CFLAGS-fputwc.c): Likewise. (CFLAGS-freopen64.c): Likewise. (CFLAGS-freopen.c): Likewise. (CFLAGS-fseek.c): Likewise. (CFLAGS-fseeko64.c): Likewise. (CFLAGS-fseeko.c): Likewise. (CFLAGS-ftello64.c): Likewise. (CFLAGS-ftello.c): Likewise. (CFLAGS-fwide.c): Likewise. (CFLAGS-genops.c): Likewise. (CFLAGS-getc.c): Likewise. (CFLAGS-getchar.c): Likewise. (CFLAGS-getwc.c): Likewise. (CFLAGS-getwchar.c): Likewise. (CFLAGS-iofclose.c): Likewise. (CFLAGS-iofflush.c): Likewise. (CFLAGS-iofgetpos64.c): Likewise. (CFLAGS-iofgetpos.c): Likewise. (CFLAGS-iofgets.c): Likewise. (CFLAGS-iofgetws.c): Likewise. (CFLAGS-iofputs.c): Likewise. (CFLAGS-iofputws.c): Likewise. (CFLAGS-iofread.c): Likewise. (CFLAGS-iofsetpos64.c): Likewise. (CFLAGS-iofsetpos.c): Likewise. (CFLAGS-ioftell.c): Likewise. (CFLAGS-iofwrite.c): Likewise. (CFLAGS-iogetdelim.c): Likewise. (CFLAGS-iogetline.c): Likewise. (CFLAGS-iogets.c): Likewise. (CFLAGS-iogetwline.c): Likewise. (CFLAGS-ioputs.c): Likewise. (CFLAGS-ioseekoff.c): Likewise. (CFLAGS-ioseekpos.c): Likewise. (CFLAGS-iosetbuffer.c): Likewise. (CFLAGS-iosetvbuf.c): Likewise. (CFLAGS-ioungetc.c): Likewise. (CFLAGS-ioungetwc.c): Likewise. (CFLAGS-oldfileops.c): Likewise. (CFLAGS-oldiofclose.c): Likewise. (CFLAGS-oldiofgetpos64.c): Likewise. (CFLAGS-oldiofgetpos.c): Likewise. (CFLAGS-oldiofsetpos64.c): Likewise. (CFLAGS-oldiofsetpos.c): Likewise. (CFLAGS-peekc.c): Likewise. (CFLAGS-putc.c): Likewise. (CFLAGS-putchar.c): Likewise. (CFLAGS-putwc.c): Likewise. (CFLAGS-putwchar.c): Likewise. (CFLAGS-rewind.c): Likewise. (CFLAGS-wfileops.c): Likewise. (CFLAGS-wgenops.c): Likewise. (CFLAGS-oldiofopen.c): Likewise. (CFLAGS-iofopen.c): Likewise. (CFLAGS-iofopen64.c): Likewise. (CFLAGS-oldtmpfile.c): Likewise. * stdio-common/Makefile (CFLAGS-vfprintf.c): Likewise. (CFLAGS-fprintf.c): Likewise. (CFLAGS-printf.c): Likewise. (CFLAGS-vfwprintf.c): Likewise. (CFLAGS-vfscanf.c): Likewise. (CFLAGS-vfwscanf.c): Likewise. (CFLAGS-fscanf.c): Likewise. (CFLAGS-scanf.c): Likewise. (CFLAGS-isoc99_vfscanf.c): Likewise. (CFLAGS-isoc99_vscanf.c): Likewise. (CFLAGS-isoc99_fscanf.c): Likewise. (CFLAGS-isoc99_scanf.c): Likewise. * wcsmbs/Makefile (CFLAGS-isoc99_wscanf.c): Likewise. (CFLAGS-isoc99_fwscanf.c): Likewise. (CFLAGS-isoc99_vwscanf.c): Likewise. (CFLAGS-isoc99_vfwscanf.c): Likewise.
* [BZ #19129][ARM] Fix _dl_tlsdesc_resolve_hold to save r0Szabolcs Nagy2015-10-141-9/+18
| | | | | | | | | | | | | | | _dl_tlsdesc_resolve_hold calls into a C function that clobbers r0, but it assumes the original argument is still in r0 after the call. This can cause crash in case of concurrent TLS access when TLSDESC is in use (-mtls-dialect=gnu2). Run into this while fixing BZ 18572. Both r0 and r1 are saved/restored so the stack remains 8 byte aligned. [BZ #19129] * sysdeps/arm/dl-tlsdesc.S (_dl_tlsdesc_resolve_hold): Save and restore r0 and r1.
* Regenerate ARM libm-test-ulps.Joseph Myers2015-10-091-115/+119
| | | | * sysdeps/arm/libm-test-ulps: Regenerated.
* Fix llrint, llround missing exceptions for ARM (bug 15470).Joseph Myers2015-10-091-0/+32
| | | | | | | | | | | | Similar to the recent fix for MIPS, ARM is also missing correct exceptions on overflow from llrint and llround functions because casts from floating-point types to long long do not result in correct exceptions on overflow. This patch enables the fix for this for ARM. Tested for ARM. [BZ #15470] * sysdeps/arm/fix-fp-int-convert-overflow.h: New file.
* arm: setjmp/longjmp: fix PIC vs SHARED thinkosDavid Lamparter2015-09-182-2/+2
| | | | | | | | | | The logic in setjmp/__longjmp incorrectly uses "PIC" to figure out whether the code is going into a shared library when it should be using "SHARED". If you build glibc with a gcc version that has PIE enabled by default, then the code will try to use symbols that are only in the shared library. URL: https://bugs.gentoo.org/336914
* Move bits/atomic.h to atomic-machine.h (bug 14912).Joseph Myers2015-09-111-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It was noted in <https://sourceware.org/ml/libc-alpha/2012-09/msg00305.html> that the bits/*.h naming scheme should only be used for installed headers. This patch renames bits/atomic.h to atomic-machine.h to follow that convention. This is the only change in this series that needs to change the filename rather than simply removing a directory level (because both atomic.h and bits/atomic.h exist at present). Tested for x86_64 (testsuite, and that installed stripped shared libraries are unchanged by the patch). [BZ #14912] * sysdeps/aarch64/bits/atomic.h: Move to ... * sysdeps/aarch64/atomic-machine.h: ...here. (_AARCH64_BITS_ATOMIC_H): Rename macro to _AARCH64_ATOMIC_MACHINE_H. * sysdeps/alpha/bits/atomic.h: Move to ... * sysdeps/alpha/atomic-machine.h: ...here. * sysdeps/arm/bits/atomic.h: Move to ... * sysdeps/arm/atomic-machine.h: ...here. Update comments. * bits/atomic.h: Move to ... * sysdeps/generic/atomic-machine.h: ...here. (_BITS_ATOMIC_H): Rename macro to _ATOMIC_MACHINE_H. * sysdeps/i386/bits/atomic.h: Move to ... * sysdeps/i386/atomic-machine.h: ...here. * sysdeps/ia64/bits/atomic.h: Move to ... * sysdeps/ia64/atomic-machine.h: ...here. * sysdeps/m68k/coldfire/bits/atomic.h: Move to ... * sysdeps/m68k/coldfire/atomic-machine.h: ...here. (_BITS_ATOMIC_H): Rename macro to _ATOMIC_MACHINE_H. * sysdeps/m68k/m680x0/m68020/bits/atomic.h: Move to ... * sysdeps/m68k/m680x0/m68020/atomic-machine.h: ...here. * sysdeps/microblaze/bits/atomic.h: Move to ... * sysdeps/microblaze/atomic-machine.h: ...here. * sysdeps/mips/bits/atomic.h: Move to ... * sysdeps/mips/atomic-machine.h: ...here. (_MIPS_BITS_ATOMIC_H): Rename macro to _MIPS_ATOMIC_MACHINE_H. * sysdeps/powerpc/bits/atomic.h: Move to ... * sysdeps/powerpc/atomic-machine.h: ...here. Update comments. * sysdeps/powerpc/powerpc32/bits/atomic.h: Move to ... * sysdeps/powerpc/powerpc32/atomic-machine.h: ...here. Update comments. Include <atomic-machine.h> instead of <bits/atomic.h>. * sysdeps/powerpc/powerpc64/bits/atomic.h: Move to ... * sysdeps/powerpc/powerpc64/atomic-machine.h: ...here. Include <atomic-machine.h> instead of <bits/atomic.h>. * sysdeps/s390/bits/atomic.h: Move to ... * sysdeps/s390/atomic-machine.h: ...here. * sysdeps/sparc/sparc32/bits/atomic.h: Move to ... * sysdeps/sparc/sparc32/atomic-machine.h: ...here. (_BITS_ATOMIC_H): Rename macro to _ATOMIC_MACHINE_H. * sysdeps/sparc/sparc32/sparcv9/bits/atomic.h: Move to ... * sysdeps/sparc/sparc32/sparcv9/atomic-machine.h: ...here. * sysdeps/sparc/sparc64/bits/atomic.h: Move to ... * sysdeps/sparc/sparc64/atomic-machine.h: ...here. * sysdeps/tile/bits/atomic.h: Move to ... * sysdeps/tile/atomic-machine.h: ...here. * sysdeps/tile/tilegx/bits/atomic.h: Move to ... * sysdeps/tile/tilegx/atomic-machine.h: ...here. Include <sysdeps/tile/atomic-machine.h> instead of <sysdeps/tile/bits/atomic.h>. (_BITS_ATOMIC_H): Rename macro to _ATOMIC_MACHINE_H. * sysdeps/tile/tilepro/bits/atomic.h: Move to ... * sysdeps/tile/tilepro/atomic-machine.h: ...here. Include <sysdeps/tile/atomic-machine.h> instead of <sysdeps/tile/bits/atomic.h>. (_BITS_ATOMIC_H): Rename macro to _ATOMIC_MACHINE_H. * sysdeps/unix/sysv/linux/arm/bits/atomic.h: Move to ... * sysdeps/unix/sysv/linux/arm/atomic-machine.h: ...here. Include <sysdeps/arm/atomic-machine.h> instead of <sysdeps/arm/bits/atomic.h>. * sysdeps/unix/sysv/linux/hppa/bits/atomic.h: Move to ... * sysdeps/unix/sysv/linux/hppa/atomic-machine.h: ...here. (_BITS_ATOMIC_H): Rename macro to _ATOMIC_MACHINE_H. * sysdeps/unix/sysv/linux/m68k/coldfire/bits/atomic.h: Move to ... * sysdeps/unix/sysv/linux/m68k/coldfire/atomic-machine.h: ...here. (_BITS_ATOMIC_H): Rename macro to _ATOMIC_MACHINE_H. * sysdeps/unix/sysv/linux/nios2/bits/atomic.h: Move to ... * sysdeps/unix/sysv/linux/nios2/atomic-machine.h: ...here. (_NIOS2_BITS_ATOMIC_H): Rename macro to _NIOS2_ATOMIC_MACHINE_H. * sysdeps/unix/sysv/linux/sh/bits/atomic.h: Move to ... * sysdeps/unix/sysv/linux/sh/atomic-machine.h: ...here. * sysdeps/x86_64/bits/atomic.h: Move to ... * sysdeps/x86_64/atomic-machine.h: ...here. * include/atomic.h: Include <atomic-machine.h> instead of <bits/atomic.h>.
* Move bits/libc-lock.h and bits/libc-lockP.h out of bits/ (bug 14912).Joseph Myers2015-09-081-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It was noted in <https://sourceware.org/ml/libc-alpha/2012-09/msg00305.html> that the bits/*.h naming scheme should only be used for installed headers. This patch renames bits/libc-lock.h to plain libc-lock.h and bits/libc-lockP.h to plain libc-lockP.h to follow that convention. Note that I don't know where libc-lockP.h comes from for Hurd (the Hurd libc-lock.h includes libc-lockP.h, but the only libc-lockP.h in the glibc source tree is for NPTL) - some unmerged patch? - but I updated the #include in the Hurd libc-lock.h anyway. Tested for x86_64 (testsuite, and that installed stripped shared libraries are unchanged by the patch). [BZ #14912] * bits/libc-lock.h: Move to ... * sysdeps/generic/libc-lock.h: ...here. (_BITS_LIBC_LOCK_H): Rename macro to _LIBC_LOCK_H. * sysdeps/mach/hurd/bits/libc-lock.h: Move to ... * sysdeps/mach/hurd/libc-lock.h: ...here. (_BITS_LIBC_LOCK_H): Rename macro to _LIBC_LOCK_H. [_LIBC]: Include <libc-lockP.h> instead of <bits/libc-lockP.h>. * sysdeps/mach/bits/libc-lock.h: Move to ... * sysdeps/mach/libc-lock.h: ...here. (_BITS_LIBC_LOCK_H): Rename macro to _LIBC_LOCK_H. * sysdeps/nptl/bits/libc-lock.h: Move to ... * sysdeps/nptl/libc-lock.h: ...here. (_BITS_LIBC_LOCK_H): Rename macro to _LIBC_LOCK_H. * sysdeps/nptl/bits/libc-lockP.h: Move to ... * sysdeps/nptl/libc-lockP.h: ...here. (_BITS_LIBC_LOCKP_H): Rename macro to _LIBC_LOCKP_H. * crypt/crypt_util.c: Include <libc-lock.h> instead of <bits/libc-lock.h>. * dirent/scandir-tail.c: Likewise. * dlfcn/dlerror.c: Likewise. * elf/dl-close.c: Likewise. * elf/dl-iteratephdr.c: Likewise. * elf/dl-lookup.c: Likewise. * elf/dl-open.c: Likewise. * elf/dl-support.c: Likewise. * elf/dl-writev.h: Likewise. * elf/rtld.c: Likewise. * grp/fgetgrent.c: Likewise. * gshadow/fgetsgent.c: Likewise. * gshadow/sgetsgent.c: Likewise. * iconv/gconv_conf.c: Likewise. * iconv/gconv_db.c: Likewise. * iconv/gconv_dl.c: Likewise. * iconv/gconv_int.h: Likewise. * iconv/gconv_trans.c: Likewise. * include/link.h: Likewise. * inet/getnameinfo.c: Likewise. * inet/getnetgrent.c: Likewise. * inet/getnetgrent_r.c: Likewise. * intl/bindtextdom.c: Likewise. * intl/dcigettext.c: Likewise. * intl/finddomain.c: Likewise. * intl/gettextP.h: Likewise. * intl/loadmsgcat.c: Likewise. * intl/localealias.c: Likewise. * intl/textdomain.c: Likewise. * libidn/idn-stub.c: Likewise. * libio/libioP.h: Likewise. * locale/duplocale.c: Likewise. * locale/freelocale.c: Likewise. * locale/newlocale.c: Likewise. * locale/setlocale.c: Likewise. * login/getutent_r.c: Likewise. * login/getutid_r.c: Likewise. * login/getutline_r.c: Likewise. * login/utmp-private.h: Likewise. * login/utmpname.c: Likewise. * malloc/mtrace.c: Likewise. * misc/efgcvt.c: Likewise. * misc/error.c: Likewise. * misc/fstab.c: Likewise. * misc/getpass.c: Likewise. * misc/mntent.c: Likewise. * misc/syslog.c: Likewise. * nis/nis_call.c: Likewise. * nis/nis_callback.c: Likewise. * nis/nss-default.c: Likewise. * nis/nss_compat/compat-grp.c: Likewise. * nis/nss_compat/compat-initgroups.c: Likewise. * nis/nss_compat/compat-pwd.c: Likewise. * nis/nss_compat/compat-spwd.c: Likewise. * nis/nss_nis/nis-alias.c: Likewise. * nis/nss_nis/nis-ethers.c: Likewise. * nis/nss_nis/nis-grp.c: Likewise. * nis/nss_nis/nis-hosts.c: Likewise. * nis/nss_nis/nis-network.c: Likewise. * nis/nss_nis/nis-proto.c: Likewise. * nis/nss_nis/nis-pwd.c: Likewise. * nis/nss_nis/nis-rpc.c: Likewise. * nis/nss_nis/nis-service.c: Likewise. * nis/nss_nis/nis-spwd.c: Likewise. * nis/nss_nisplus/nisplus-alias.c: Likewise. * nis/nss_nisplus/nisplus-ethers.c: Likewise. * nis/nss_nisplus/nisplus-grp.c: Likewise. * nis/nss_nisplus/nisplus-hosts.c: Likewise. * nis/nss_nisplus/nisplus-initgroups.c: Likewise. * nis/nss_nisplus/nisplus-network.c: Likewise. * nis/nss_nisplus/nisplus-proto.c: Likewise. * nis/nss_nisplus/nisplus-pwd.c: Likewise. * nis/nss_nisplus/nisplus-rpc.c: Likewise. * nis/nss_nisplus/nisplus-service.c: Likewise. * nis/nss_nisplus/nisplus-spwd.c: Likewise. * nis/ypclnt.c: Likewise. * nptl/libc_pthread_init.c: Likewise. * nss/getXXbyYY.c: Likewise. * nss/getXXent.c: Likewise. * nss/getXXent_r.c: Likewise. * nss/nss_db/db-XXX.c: Likewise. * nss/nss_db/db-netgrp.c: Likewise. * nss/nss_db/nss_db.h: Likewise. * nss/nss_files/files-XXX.c: Likewise. * nss/nss_files/files-alias.c: Likewise. * nss/nsswitch.c: Likewise. * posix/regex_internal.h: Likewise. * posix/wordexp.c: Likewise. * pwd/fgetpwent.c: Likewise. * resolv/res_hconf.c: Likewise. * resolv/res_libc.c: Likewise. * shadow/fgetspent.c: Likewise. * shadow/lckpwdf.c: Likewise. * shadow/sgetspent.c: Likewise. * socket/opensock.c: Likewise. * stdio-common/reg-modifier.c: Likewise. * stdio-common/reg-printf.c: Likewise. * stdio-common/reg-type.c: Likewise. * stdio-common/vfprintf.c: Likewise. * stdio-common/vfscanf.c: Likewise. * stdlib/abort.c: Likewise. * stdlib/cxa_atexit.c: Likewise. * stdlib/fmtmsg.c: Likewise. * stdlib/random.c: Likewise. * stdlib/setenv.c: Likewise. * string/strsignal.c: Likewise. * sunrpc/auth_none.c: Likewise. * sunrpc/bindrsvprt.c: Likewise. * sunrpc/create_xid.c: Likewise. * sunrpc/key_call.c: Likewise. * sunrpc/rpc_thread.c: Likewise. * sysdeps/arm/backtrace.c: Likewise. * sysdeps/generic/ldsodefs.h: Likewise. * sysdeps/generic/stdio-lock.h: Likewise. * sysdeps/generic/unwind-dw2-fde.c: Likewise. * sysdeps/i386/backtrace.c: Likewise. * sysdeps/ieee754/ldbl-opt/nldbl-compat.c: Likewise. * sysdeps/m68k/backtrace.c: Likewise. * sysdeps/mach/hurd/cthreads.c: Likewise. * sysdeps/mach/hurd/dirstream.h: Likewise. * sysdeps/mach/hurd/malloc-machine.h: Likewise. * sysdeps/nptl/malloc-machine.h: Likewise. * sysdeps/nptl/stdio-lock.h: Likewise. * sysdeps/posix/dirstream.h: Likewise. * sysdeps/posix/getaddrinfo.c: Likewise. * sysdeps/posix/system.c: Likewise. * sysdeps/pthread/aio_suspend.c: Likewise. * sysdeps/s390/s390-32/backtrace.c: Likewise. * sysdeps/s390/s390-64/backtrace.c: Likewise. * sysdeps/unix/sysv/linux/check_pf.c: Likewise. * sysdeps/unix/sysv/linux/if_index.c: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/getutent_r.c: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/getutid_r.c: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/getutline_r.c: Likewise. * sysdeps/unix/sysv/linux/shm-directory.c: Likewise. * sysdeps/unix/sysv/linux/system.c: Likewise. * sysdeps/x86_64/backtrace.c: Likewise. * time/alt_digit.c: Likewise. * time/era.c: Likewise. * time/tzset.c: Likewise. * wcsmbs/wcsmbsload.c: Likewise. * nptl/tst-initializers1.c (do_test): Refer to <libc-lock.h> instead of <bits/libc-lock.h> in comment.
* Rename bits/linkmap.h to linkmap.h (bug 14912).Joseph Myers2015-09-041-0/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It was noted in <https://sourceware.org/ml/libc-alpha/2012-09/msg00305.html> that the bits/*.h naming scheme should only be used for installed headers. This patch renames bits/linkmap.h to plain linkmap.h to follow that convention. Tested for x86_64 (testsuite, and that installed stripped shared libraries are unchanged by the patch). [BZ #14912] * bits/linkmap.h: Move to ... * sysdeps/generic/linkmap.h: ...here. * sysdeps/aarch64/bits/linkmap.h: Move to ... * sysdeps/aarch64/linkmap.h: ...here. * sysdeps/arm/bits/linkmap.h: Move to ... * sysdeps/arm/linkmap.h: ...here. * sysdeps/hppa/bits/linkmap.h: Move to ... * sysdeps/hppa/linkmap.h: ...here. * sysdeps/ia64/bits/linkmap.h: Move to ... * sysdeps/ia64/linkmap.h: ...here. * sysdeps/mips/bits/linkmap.h: Move to ... * sysdeps/mips/linkmap.h: ...here. * sysdeps/s390/bits/linkmap.h: Move to ... * sysdeps/s390/linkmap.h: ...here. * sysdeps/sh/bits/linkmap.h: Move to ... * sysdeps/sh/linkmap.h: ...here. * sysdeps/x86/bits/linkmap.h: Move to ... * sysdeps/x86/linkmap.h: ...here. * include/link.h: Include <linkmap.h> instead of <bits/linkmap.h>.
* Fix BZ #18084 -- backtrace (..., 0) dumps core on x86.Paul Pluzhnikov2015-08-151-2/+5
| | | | Other architectures also had bugs, or did unnecessary work.
* [ARM][BZ #17711] Fix extern protected data handlingSzabolcs Nagy2015-07-242-3/+9
| | | | | | | | | Fixes elf/tst-protected1a and elf/tst-protected1b tests. Depends on a gcc patch that makes protected visibility data non-local: https://gcc.gnu.org/ml/gcc-patches/2015-07/msg01871.html and on a binutils patch so R_*_GLOB_DAT relocs are used for it: https://sourceware.org/ml/binutils/2015-07/msg00247.html
* Make sysdeps/posix bring in login subdir.Roland McGrath2015-07-231-0/+32
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* NaCl: Fix missing getdtablesize symbol.Roland McGrath2015-07-231-0/+1
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* Add abilist files and NEWS item for arm-nacl port.Roland McGrath2015-07-211-0/+1804
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* BZ#18383: Conditionalize test-xfail-tst-tlsalign{,-static} on ARM assembler bug.Roland McGrath2015-07-082-0/+89
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* Regenerate ARM libm-test-ulps.Joseph Myers2015-07-011-265/+457
| | | | * sysdeps/arm/libm-test-ulps: Regenerated.
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