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* PowerPC: use _dl_static_init to set GLRO(gl_pagesize)Adhemerval Zanella2013-07-234-0/+129
| | | | | | This patch fixes dlfcn/tststatic5 for PowerPC where pagesize variable was not properly initialized in certain cases. This patch is based on other architecture code.
* S/390: ULPs update.Andreas Krebbel2013-07-221-141/+6285
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* CVE-2013-2207, BZ #15755: Disable pt_chown.Carlos O'Donell2013-07-212-5/+8
| | | | | | | | | | | | | | | | | | | | | | | The helper binary pt_chown tricked into granting access to another user's pseudo-terminal. Pre-conditions for the attack: * Attacker with local user account * Kernel with FUSE support * "user_allow_other" in /etc/fuse.conf * Victim with allocated slave in /dev/pts Using the setuid installed pt_chown and a weak check on whether a file descriptor is a tty, an attacker could fake a pty check using FUSE and trick pt_chown to grant ownership of a pty descriptor that the current user does not own. It cannot access /dev/pts/ptmx however. In most modern distributions pt_chown is not needed because devpts is enabled by default. The fix for this CVE is to disable building and using pt_chown by default. We still provide a configure option to enable hte use of pt_chown but distributions do so at their own risk.
* Update Sparc ULPs.David S. Miller2013-07-201-0/+5
| | | | | * sysdeps/sparc/fpu/libm-test-ulps: Update ULPs to handle minor difference between 32-bit and 64-bit.
* BZ #15711: Avoid circular dependency for syscall.hCarlos O'Donell2013-07-161-2/+9
| | | | | | | | | | | | | | | | | | The generated header is compiled with `-ffreestanding' to avoid any circular dependencies against the installed implementation headers. Such a dependency would require the implementation header to be installed before the generated header could be built (See bug 15711). In current practice the generated header dependencies do not include any of the implementation headers removed by the use of `-ffreestanding'. --- 2013-07-15 Carlos O'Donell <carlos@redhat.com> [BZ #15711] * sysdeps/unix/sysv/linux/Makefile ($(objpfx)bits/syscall%h): Avoid system header dependency with -ffreestanding. ($(objpfx)bits/syscall%d): Likewise.
* Full from-scratch rebuild of sparc ULPs.David S. Miller2013-07-071-238/+73
| | | | * sysdeps/sparc/fpu/libm-test-ulps: Regenerate from scratch.
* Update x86 and x86_64 ulps on AMD FX-8350 with GCC 4.8.1.Jeroen Albers2013-07-052-16/+523
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* Update powerpc-fpu ULPs.Adhemerval Zanella2013-07-041-22/+146
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* Sync sys/ptrace with Linux 3.10Andreas Jaeger2013-07-044-5/+80
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* Update i386 ULPs.Allan McRae2013-07-031-0/+80
| | | | * sysdeps/i386/fpu/libm-test-ulps: Update.
* Update sparc ULPs.David S. Miller2013-07-021-0/+46
| | | | * sysdeps/sparc/fpu/libm-test-ulps: Update.
* Update x86_64 ULPs.Markus Trippelsdorf2013-07-021-2/+318
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* Regenerate x86 and x86_64 ulps.Joseph Myers2013-07-022-1593/+129
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* Enable static 32-bit SSE4.2 strcasecmp/strncasecmpH.J. Lu2013-07-022-6/+0
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* Skip SSE4.2 versions on Intel SilvermontLiubov Dmitrieva2013-06-285-15/+37
| | | | SSE2/SSSE3 versions are faster than SSE4.2 versions on Intel Silvermont.
* PowerPC: Define AT_HWCAP2 bits and AT_HWCAP2 handling for POWER8.Ryan S. Arnold2013-06-285-22/+67
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* Add GLRO(dl_hwcap2) for new AT_HWCAP2 auxv_t a_type.Ryan S. Arnold2013-06-288-7/+27
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* Consistently use page_shift in sysdeps/unix/sysv/linux/mmap64.c.Joseph Myers2013-06-281-1/+1
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* Fix buffers overrun in x86_64 memcmp-ssse3.SLiubov Dmitrieva2013-06-261-4/+2
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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>
* PowerPC: Enable POWER8 platform sans hwcap bits.Ryan S. Arnold2013-06-246-3/+16
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* Include <string.h> in sysdeps/unix/sysv/linux/libc_fatal.c.Joseph Myers2013-06-221-0/+1
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* Add sh4 implementation of fegetexceptflag.Kaz Kojima2013-06-211-0/+38
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* Rewrite sysd-rules generation using an awk script.Roland McGrath2013-06-171-1/+1
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* Fix spurious "inexact" exceptions from dbl-64 sqrt (bug 15631).Joseph Myers2013-06-151-2/+15
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* New API to set default thread attributesSiddhesh Poyarekar2013-06-1510-0/+40
| | | | | | | This patch introduces two new convenience functions to set the default thread attributes used for creating threads. This allows a programmer to set the default thread attributes just once in a process and then run pthread_create without additional attributes.
* Set fast unaligned load flag for new Intel microarchitectureLiubov Dmitrieva2013-06-141-0/+7
| | | | | | | | | I have small patch for new Intel Silvermont machines. http://newsroom.intel.com/community/intel_newsroom/blog/2013/05/06/intel-launches-low-power-high-performance-silvermont-microarchitecture I checked this on my machine and see that strcpy, ... unaligned versions are faster than ssse3 versions.
* Add rtld-memset.S for x86_64Siddhesh Poyarekar2013-06-152-1/+37
| | | | | | Resolves: BZ #15627 Add an assembler version of rtld-memset to avoid using SSE registers.
* Improve precision of clock() function on LinuxSiddhesh Poyarekar2013-06-131-20/+16
| | | | | | | Resolves #12515. Use CLOCK_PROCESS_CPUTIME_ID instead of times to get better precision in the value returned by clock.
* Fix unsafe compiler optimizationAdhemerval Zanella2013-06-122-1/+8
| | | | | | | | 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 Poyarekar2013-06-122-14/+214
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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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* PowerPC: Merge ports/ dl-procinfo.[ch] with base.Ryan S. Arnold2013-06-112-11/+35
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* Fix symbol definitions for __clock_* functionsSiddhesh Poyarekar2013-06-116-14/+15
| | | | | | __clock_gettime and other __clock_* functions could result in an extra PLT reference within libc.so if it actually gets used. None of the code currently uses them, which is why this probably went unnoticed.
* 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 trailing whitespace in sysdeps/gnu/errlist.c.Joseph Myers2013-06-082-10/+10
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* Use (void) in no-arguments function definitions.Joseph Myers2013-06-0821-27/+27
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* Avoid use of "register" as optimization hint.Joseph Myers2013-06-077-16/+16
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* Fix leading whitespaces.Ondrej Bilka2013-06-0642-83/+83
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* Remove trailing whitespace.Joseph Myers2013-06-05156-800/+800
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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.
* Link extra-libs consistently with libc and ld.so.Joseph Myers2013-05-312-6/+0
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* [BZ #14256]Jeff Law2013-05-301-5/+6
| | | | | | * manual/errno.texi (ESTALE): Update to account for more than just NFS file systems. * sysdeps/gnu/errlist.c: Regenerated.
* Avoid crashing in LD_DEBUG when program name is unavailableSiddhesh Poyarekar2013-05-2910-21/+15
| | | | | | | | | 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.
* Update powerpc libm-test ULPs.Adhemerval Zanella2013-05-281-0/+37
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* _dl_skip_args declaration cleanup.Thomas Schwinge2013-05-261-1/+0
| | | | | | | * sysdeps/mach/hurd/dl-sysdep.c (_dl_sysdep_start:go): Don't declare _dl_skip_args. Continuation of commit 8347c74cc5c972aa9e57747177b1f5f4b1cbcac8.
* _dl_non_dynamic_init declaration cleanup.Thomas Schwinge2013-05-261-3/+0
| | | | | | | * sysdeps/mach/hurd/i386/init-first.c (_dl_non_dynamic_init): Don't declare. Continuation of commit bc16e260d0e74b36e48d30edc6ea4f1152700c09.
* Fix ldbl-96 hypotl of subnormals (bug 15529).Joseph Myers2013-05-241-1/+1
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* Test drem and pow10 in libm-test.inc.Joseph Myers2013-05-242-0/+35
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* Use same tests for isfinite/finite, lgamma/gamma.Joseph Myers2013-05-242-0/+28
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