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glibc

The GNU C library.

Yesterday's Activity

Add benchtests for roundeven and roundevenf
Shen-Ta Hsieh: This patch adds benchtests for the roundeven and roundevenf functions.

Recent Activity

Add benchtests for roundeven and roundevenf
Shen-Ta Hsieh: This patch adds benchtests for the roundeven and roundevenf functions.

nscd: add cache dumper
DJ Delorie

powerpc: Fix feraiseexcept and feclearexcept macros
Matheus Castanho: A recent change to fenvinline.h modified the check if __e is a a power of 2 inside feraiseexcept and feclearexcept macros.

build-many-glibcs.py: Add list-compilers, list-glibcs commands
Florian Weimer: These commands are helpful for scripting the distribution of build-many-glibcs.

build-many-glibcs.py: Add --shallow option
Florian Weimer: The history is not used by build-many-glibcs.py itself.--replace-sources deletes an existing source tree before switching the version.

i386: Use comdat instead of .gnu.linkonce for i386 setup pic register (BZ #20543)
Adhemerval Zanella: GCC has moved from using .gnu.linkonce for i386 setup pic register with minimum current version (as for binutils minimum binutils that support comdat). Trying to pinpoint when binutils has added comdat support for i686, it seems it was around 2004 [1].

Introduce and ELF_INITFINI for all architectures
Florian Weimer: This supersedes the init_array sysdeps directory.

: Add type safety and port to Hurd
Florian Weimer: The new type struct fd_to_filename makes the allocation of the backing storage explicit.

linux: Consolidate INLINE_SYSCALL
Adhemerval Zanella: With all Linux ABIs using the expected Linux kABI to indicate syscalls errors, there is no need to replicate the INLINE_SYSCALL.

powerpc: Consolidate Linux syscall definition
Adhemerval Zanella: The diferences between powerpc64{le} and powerpc32 Linux sysdep.h are: 1.

glibc Release Tags

Generate ChangeLog.old/ChangeLog.20 for 2.31
Siddhesh Poyarekar: We're ready to tag!

Open master for 2.32 development
Siddhesh Poyarekar: happy hacking!

[MIPS] Raise highest supported EI_ABIVERSION value [BZ #24916]
Mihailo Stojanovic: This bumps the highest valid EI_ABIVERSION value to ABSOLUTE ABI. New testcase loads the symbol from the GOT with the "lb" instruction so that the EI_ABIVERSION header field of the shared object is set to ABSOLUTE (it doesn't actually check the value of the symbol), and makes sure that the main executable is executed without "ABI version invalid" error. Tested for all three ABIs (o32, n32, n64) using both static linker which handles undefined weak symbols correctly [1] (and sets the EI_ABIVERSION of the test module) and the one that doesn't (EI_ABIVERSION left as 0). [1]

Open master for 2.31 development
Carlos O'Donell

Tag 2.30 release
Carlos O'Donell

Update install and NEWS for 2.30 release
Carlos O'Donell

Replace PREPARE_VERSION macro with inline function
Tobias Klauser: - sysdeps/unix/sysv/linux/dl-vdso.h (PREPARE_VERSION): Remove macro.

Add missing VDSO_{NAME,HASH}_* macros and use them for PREPARE_VERSION_KNOWN
Tobias Klauser: Define all currently used Linux versions used for PREPARE_VERSION{,_KNOWN} in sysdeps/unix/sysv/linux/dl-vdso.h and use them instead of duplicating the versions and precomputed hashes across architecture specific files. - sysdeps/unix/sysv/linux/aarch64/gettimeofday.c (INIT_ARCH): Use PREPARE_VERSION_KNOWN. - sysdeps/unix/sysv/linux/aarch64/init-first.c: Likewise. - sysdeps/unix/sysv/linux/dl-vdso.h (VDSO_NAME_LINUX_2_6_39): New define.

Open master for 2.30 development
Siddhesh Poyarekar

Open master branch for glibc 2.29 development
Carlos O'Donell

Most Popular This Year

malloc: Set and reset all hooks for tracing (Bug 16573)
Carlos O'Donell: If an error occurs during the tracing operation, particularly during a call to lock_and_info() which calls _dl_addr, we may end up calling back into the malloc-subsystem and relock the loader lock and deadlock.

aarch64: thunderx2 memmove performance improvements
Anton Youdkevitch: The performance improvement is about 20%-30% for larger cases and about 1%-5% for smaller cases.

Improve bench-strstr
Wilco Dijkstra: by using an extract from the manual as the input to make the test more realistic.

powerpc: Remove optimized isnan
Adhemerval Zanella: The powerpc isnan optimizations are not really a gain: - GCC will call libm iff -fsignaling-nans is used.

powerpc: Remove optimized finite
Adhemerval Zanella: The powerpc finite optimization do not show much gain: - GCC will call libm iff -fsignaling-nans is used.

powerpc: Remove optimized isinf
Adhemerval Zanella: The powerpc isinf optimizations onyl adds complexity: - GCC will call libm iff -fsignaling-nans is used.

MIPS support for GNU hash
Mihailo Stojanovic: This patch is a reimplementation of [1], which was submitted back in 2015.

powerpc: Use generic e_expf
Adhemerval Zanella: Generic implementation is faster on both power8 and power9:

powerpc: hypot refactor and optimization
Adhemerval Zanella: The powerpc hypot is slight optimized by: - Commit 8df4e219e43, both isnan and isinf are always inlined and thus the check TEST_INF_NAN does not make sense anymore.

s390: Enable VDSO for static linking
Adhemerval Zanella: Although s390 only enables vDSO for dynamically linked elf binaries (arch/s390/kernel/vdso.c:217), there is no indication in the code or associated commit message for why not enable it for statically linked binaries as well.

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