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* Add GLRO(dl_hwcap2) for new AT_HWCAP2 auxv_t a_type.Ryan S. Arnold2013-06-282-1/+5
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* [BZ #10283] localedef: align fixed maps to SHMLBAMike Frysinger2013-06-241-0/+26
| | | | | | | | | | | | Many Linux arches require fixed mmaps to be aligned higher than pagesize, so use the SHMLBA define as it represents this quantity exactly. This fixes spurious errors seen on those arches like: cannot map archive header: Invalid argument URL: http://sourceware.org/bugzilla/show_bug.cgi?id=10283 Reported-by: CHIKAMA Masaki <masaki.chikama@gmail.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Fix unsafe compiler optimizationAdhemerval Zanella2013-06-121-1/+6
| | | | | | | | GCC 4.8 enables -ftree-loop-distribute-patterns at -O3 by default and this optimization may transform loops into memset/memmove calls. Without proper handling this may generate unexpected PLT calls on GLIBC. This patch fixes by create memset/memmove alias to internal GLIBC __GI_memset/__GI_memmove symbols.
* Set/restore rounding mode only when neededSiddhesh Poyarekar2013-06-121-14/+41
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The most common use case of math functions is with default rounding mode, i.e. rounding to nearest. Setting and restoring rounding mode is an unnecessary overhead for this, so I've added support for a context, which does the set/restore only if the FP status needs a change. The code is written such that only x86 uses these. Other architectures should be unaffected by it, but would definitely benefit if the set/restore has as much overhead relative to the rest of the code, as the x86 bits do. Here's a summary of the performance improvement due to these improvements; I've only mentioned functions that use the set/restore and have benchmark inputs for x86_64: Before: cos(): ITERS:4.69335e+08: TOTAL:28884.6Mcy, MAX:4080.28cy, MIN:57.562cy, 16248.6 calls/Mcy exp(): ITERS:4.47604e+08: TOTAL:28796.2Mcy, MAX:207.721cy, MIN:62.385cy, 15543.9 calls/Mcy pow(): ITERS:1.63485e+08: TOTAL:28879.9Mcy, MAX:362.255cy, MIN:172.469cy, 5660.86 calls/Mcy sin(): ITERS:3.89578e+08: TOTAL:28900Mcy, MAX:704.859cy, MIN:47.583cy, 13480.2 calls/Mcy tan(): ITERS:7.0971e+07: TOTAL:28902.2Mcy, MAX:1357.79cy, MIN:388.58cy, 2455.55 calls/Mcy After: cos(): ITERS:6.0014e+08: TOTAL:28875.9Mcy, MAX:364.283cy, MIN:45.716cy, 20783.4 calls/Mcy exp(): ITERS:5.48578e+08: TOTAL:28764.9Mcy, MAX:191.617cy, MIN:51.011cy, 19071.1 calls/Mcy pow(): ITERS:1.70013e+08: TOTAL:28873.6Mcy, MAX:689.522cy, MIN:163.989cy, 5888.18 calls/Mcy sin(): ITERS:4.64079e+08: TOTAL:28891.5Mcy, MAX:6959.3cy, MIN:36.189cy, 16062.8 calls/Mcy tan(): ITERS:7.2354e+07: TOTAL:28898.9Mcy, MAX:1295.57cy, MIN:380.698cy, 2503.7 calls/Mcy So the improvements are: cos: 27.9089% exp: 22.6919% pow: 4.01564% sin: 19.1585% tan: 1.96086% The downside of the change is that it will have an adverse performance impact on non-default rounding modes, but I think the tradeoff is justified.
* Add exception information to math-tests.h and use it in libm-test.inc.Joseph Myers2013-06-111-0/+18
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* Add rounding mode information to math-tests.h and use it in libm-test.inc.Joseph Myers2013-06-101-0/+18
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* Avoid use of "register" as optimization hint.Joseph Myers2013-06-071-2/+2
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* Fix leading whitespaces.Ondrej Bilka2013-06-061-1/+1
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* Skip modifying exception mask and flags in SET_RESTORE_ROUND_53BITSiddhesh Poyarekar2013-06-051-6/+6
| | | | | We only need to set/restore rounding mode to ensure correct computation for non-default rounding modes.
* Avoid crashing in LD_DEBUG when program name is unavailableSiddhesh Poyarekar2013-05-291-0/+5
| | | | | | | | | Resolves: #15465 The program name may be unavailable if the user application tampers with argc and argv[]. Some parts of the dynamic linker caters for this while others don't, so this patch consolidates the check and fallback into a single macro and updates all users.
* Add #include <stdint.h> for uint[32|64]_t usage (except installed headers).Ryan S. Arnold2013-05-163-0/+4
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* Improve tgamma accuracy (bugs 2546, 2560, 5159, 15426).Joseph Myers2013-05-081-0/+12
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* Declare _dl_skip_args in ldsodefs.h header.Roland McGrath2013-05-071-0/+10
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* Flesh out stub not-cancel.h file.Roland McGrath2013-05-061-0/+8
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* Get rid of __STDC_FORMAT_MACROS, __STDC_LIMIT_MACROS and __STDC_CONSTANT_MACROSPaul Pluzhnikov2013-04-252-20/+0
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* New <math.h> macro named issignaling to check for a signaling NaN (sNaN).Thomas Schwinge2013-04-021-0/+6
| | | | It is based on draft TS 18661 and currently enabled as a GNU extension.
* Make _dl_phdr pointer to const.Roland McGrath2013-03-281-1/+1
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* Consolidate declarations of _dl_phdr, _dl_phnum.Roland McGrath2013-03-281-0/+6
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* On 32-bit x86, disable certain tests involving sNaN values.Thomas Schwinge2013-03-211-0/+36
| | | | Follow-up to commit 495ded2c8c1eb8c0ac4b54add2dd397852e19cba.
* Move _dl_non_dynamic_init, _dl_aux_init declarations.Roland McGrath2013-03-151-0/+7
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* Remove powerpc64 bounded-pointers code.Joseph Myers2013-03-061-25/+0
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* Fix NEED_DL_SYSINFO_DSO conditionals.Roland McGrath2013-03-011-1/+1
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* unify xmalloc prototypes & friendsMike Frysinger2013-02-181-7/+1
| | | | | | | | These prototypes are duplicated in many places. Add a dedicated header for holding prototypes for program-specific functions to avoid that. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* New function _dl_find_dso_for_objectSiddhesh Poyarekar2013-02-181-0/+4
| | | | Consolidate code to search for an address within a DSO.
* Remove __ptrvalue, __bounded and __unbounded.Joseph Myers2013-02-131-2/+2
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* Remove CHECK_N and bp-checks.h.Joseph Myers2013-02-081-49/+0
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* ARM: Support loading unmarked objects from cache.Carlos O'Donell2013-02-081-0/+1
| | | | | | | | | | | | ARM now supports loading unmarked objects from the dynamic loader cache. Unmarked objects can be used with the hard-float or soft-float ABI. We must support loading unmarked objects during the transition period from a binutils that does not mark objects to one that does mark them with the correct ELF flags. Signed-off-by: Carlos O'Donell <carlos@redhat.com>
* Remove CHECK_1 and CHECK_1_NULL_OK.Joseph Myers2013-02-081-7/+0
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* Remove CHECK_BOUNDS_LOW and CHECK_BOUNDS_HIGH for C code.Joseph Myers2013-02-081-12/+0
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* Add missing includes to sysdeps/generic/malloc-sysdep.h.Roland McGrath2013-02-051-0/+3
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* Remove CHECK_STRING, CHECK_STRING_NULL_OK and __ubp_memchr.Joseph Myers2013-02-041-16/+0
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* Remove BOUNDED_N and BOUNDED_1.Joseph Myers2013-02-011-10/+0
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* Remove bp-start.h and INIT_ARGV_and_ENVIRON.Joseph Myers2013-02-011-71/+0
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* Remove CHECK_IOCTL, CHECK_FCNTL and CHECK_N_PAGES.Joseph Myers2013-01-311-27/+0
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* Remove CHECK_SIGSET and CHECK_SIGSET_NULL_OK.Joseph Myers2013-01-311-7/+0
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* Remove bp-semctl.h and CHECK_SEMCTL.Joseph Myers2013-01-311-66/+0
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* Remove bp-thunks code.Joseph Myers2013-01-311-69/+0
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* Use __extension__ with long long in installed headers.Joseph Myers2013-01-101-2/+2
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* Update copyright notices with scripts/update-copyrights.Joseph Myers2013-01-0278-83/+78
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* Add script to update copyright notices and reformat some to facilitate its use.Joseph Myers2013-01-011-2/+1
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* Fix warnings from generic _FPU_GETCWChris Metcalf2012-12-061-3/+3
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* Fix sparc build with older compilers.David S. Miller2012-12-041-1/+6
| | | | * sysdeps/generic/memcopy.h: Add multiple inclusion protection.
* Fix strict-aliasing warnings from unwind-dw2-fde.c.Joseph Myers2012-11-271-9/+18
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* Mark unwind-dw2-fde-glibc.c variable possibly unused.Joseph Myers2012-11-221-2/+3
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* Add ldconfig cache tag handling for AArch64Steve McIntyre2012-11-191-0/+1
| | | | | | | | | * sysdeps/generic/ldconfig.h (FLAG_AARCH64_LIB64): New macro. * elf/cache.c (print_entry): Print ",AArch64" for FLAG_AARCH64_LIB64. Signed-off-by: Steve McIntyre <steve.mcintyre@linaro.org> Reviewed-by: Carlos O'Donell <carlos@systemhalted.org>
* Add ldconfig cache tag handling for ARM hard-float ABISteve McIntyre2012-11-191-1/+2
| | | | | | | | | * sysdeps/generic/ldconfig.h (FLAG_ARM_LIBHF): New macro. * elf/cache.c (print_entry): Print ",hard-float" for FLAG_ARM_LIBHF. Signed-off-by: Steve McIntyre <steve.mcintyre@linaro.org> Reviewed-by: Carlos O'Donell <carlos@systemhalted.org>
* generic paths.h: remove old paths from _PATH_STDPATHPino Toscano2012-11-041-1/+1
| | | | | Remove /usr/contrib/bin and /usr/old/bin from _PATH_STDPATH, since they seem to be part only of old BSDs, Solaris and HP-UX.
* Fix small indendation issues in paths.h filesPino Toscano2012-11-041-2/+2
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* Make fma use of Dekker and Knuth algorithms use round-to-nearest (bug 14796).Joseph Myers2012-11-031-0/+16
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* Fix strtod handling of underflow (bug 14047).Joseph Myers2012-10-301-0/+33
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