Due to raising the minimum binutils version to version >=2.28,
the used cfi_escape for cfi_val_offset can now be ommitted.
The commit 0fc76d8762
has already adjusted it for the 64bit part of mcount.
This patch also adjusts it for the 31bit part of mcount.
Checked with "objdump -WF" / "objdump -Wf" that the previous
cfi_escape and the new cfi_val_offset are equal.
Add initial inputs for asinpi(f), acospi(f), atanpi(f) and atan2pi(f) based
on existing asin/acos/atan inputs.
Benchtests now works on the new libmvec function.
Reviewed-by: Yury Khrustalev <yury.khrustalev@arm.com>
This fixes make dist on systems with the latest texinfo installed.
GNU texinfo 7.2 changes @xrefs in proper plain text sentences instead
of pseudo info references.
Tested-By: Collin Funk <collin.funk1@gmail.com>
Reviewed-by: Andreas K. Huettel <dilfridge@gentoo.org>
And simplify the interface of support_capture_subprogram_self_sgid.
Use the existing framework for temporary directories (now with
mode 0700) and directory/file deletion. Handle all execution
errors within support_capture_subprogram_self_sgid. In particular,
this includes test failures because the invoked program did not
exit with exit status zero. Existing tests that expect exit
status 42 are adjusted to use zero instead.
In addition, fix callers not to call exit (0) with test failures
pending (which may mask them, especially when running with --direct).
Fixes commit 35fc356fa3
("elf: Fix subprocess status handling for tst-dlopen-sgid (bug 32987)").
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Remove Changelog entries that use 'blacklist' or 'master' in the
test data. The test data still contains enough accented characters
to serve the purposes of the posix/tst-regex.c test.
Reviewed-by: Florian Weimer <fweimer@redhat.com>
Remove the obsolete ignore=CVS since we use git now.
We make the code more inclusive by removing obsolete comments.
Reviewed-by: Florian Weimer <fweimer@redhat.com>
When running as root, it is likely that we can run under any group.
Pick a harmless group from /etc/group in this case.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Check that LD_LIBRARY_PATH is ignored for AT_SECURE statically
linked binaries, using support_capture_subprogram_self_sgid.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Now we finally support modern GCC and binutils, it's time for a cleanup.
Remove HAVE_AARCH64_SVE_ASM define and conditional compilation. Remove SVE
configure checks for SVE, ACLE and variant-PCS support.
Reviewed-by: Yury Khrustalev <yury.khrustalev@arm.com>
Now we finally support modern GCC and binutils, it's time for a cleanup.
Use PAC and BTI instructions unconditionally and use proper assembler syntax.
Remove the PR target/94791 strip_pac workarounds for buggy GCCs. Remove the
PAC/BTI configure checks - always emit GNU property notes on assembly files.
Change cfi_window_save to the correct cfi_negate_ra_state unwind directive.
Reviewed-by: Matthieu Longo <matthieu.longo@arm.com>
Implement double and single precision variants of the C23 routine atan2pi
for both AdvSIMD and SVE.
Reviewed-by: Wilco Dijkstra <Wilco.Dijkstra@arm.com>
Implement double and single precision variants of the C23 routine atanpi
for both AdvSIMD and SVE.
Reviewed-by: Wilco Dijkstra <Wilco.Dijkstra@arm.com>
Implement double and single precision variants of the C23 routine asinpi
for both AdvSIMD and SVE.
Reviewed-by: Wilco Dijkstra <Wilco.Dijkstra@arm.com>
Implement double and single precision variants of the C23 routine acospi
for both AdvSIMD and SVE.
Reviewed-by: Wilco Dijkstra <Wilco.Dijkstra@arm.com>
Improve performance of Inverse trig functions by altering how coefficients are
loaded.
Performance improvement on Neoverse V1:
SVE acos 14%
AdvSIMD acos 6%
AdvSIMD asin 6%
SVE asin 5%
AdvSIMD asinf 2%
AdvSIMD atanf 22%
SVE atanf 20%
SVE atan 11%
AdvSIMD atan 5%
SVE atan2 7%
SVE atan2f 4%
AdvSIMD atan2f 3%
AdvSIMD atan2 2%
Reviewed-by: Wilco Dijkstra <Wilco.Dijkstra@arm.com>
This ensures that the ctype data pointers in TLS are valid
in secondary namespaces even without initialization via
__ctype_init.
Reviewed-by: Frédéric Bérat <fberat@redhat.com>
These variables are not exported, and libc.so TLS is initial-exec
anyway. Declare these variables as hidden and use the initial-exec
TLS model.
Reviewed-by: Frédéric Bérat <fberat@redhat.com>
Use __thread variables directly instead. The macros do not save any
typing. It seems unlikely that a future port will lack __thread
variable support.
Some of the __libc_tsd_* variables are referenced from assembler
files, so keep their names. Previously, <libc-tls.h> included
<tls.h>, which in turn included <errno.h>, so a few direct includes
of <errno.h> are now required.
Reviewed-by: Frédéric Bérat <fberat@redhat.com>
Support for seeking is limited. Using the d_off and d_reclen members
of struct dirent is discouraged, especially with readdir. Concurrent
modification of directories during iteration may result in duplicate
or missing etnries.
Add test that checks that ZA state is disabled after setjmp and sigsetjmp
Update existing SME test that uses setjmp
Reviewed-by: Wilco Dijkstra <Wilco.Dijkstra@arm.com>
Due to the nature of the ZA state, setjmp() should clear it in the
same manner as it is already done by longjmp.
Reviewed-by: Wilco Dijkstra <Wilco.Dijkstra@arm.com>
Existing benchtests for malloc infrastructure seem to be rather generic
to test global malloc implementation performance. This new benchtest
focus on reducing any non tcache related side effects, allowing to more
realistically predict performance impacts of tcache code changes.
The test was inpired in bench-[cm]alloc-thread code, with severe
simplifications:
- forces single thread execution, reducing concurrency side-effects,
like cache incoherence penalties due simultaneous writes to the same
cache pages;
- Focus on allocating and deallocating a single size for all the
duration of the benchmark. Since all it does is allocate and
deallocate, it will measure the tcache hotpath without any
side-effects.
- Allows to specify the allocation size as input argument.
Reviewed-by: Wilco Dijkstra <Wilco.Dijkstra@arm.com>
C23 adds various <math.h> function families originally defined in TS
18661-4. Add the rootn functions, which compute the Yth root of X for
integer Y (with a domain error if Y is 0, even if X is a NaN). The
integer exponent has type long long int in C23; it was intmax_t in TS
18661-4, and as with other interfaces changed after their initial
appearance in the TS, I don't think we need to support the original
version of the interface.
As with pown and compoundn, I strongly encourage searching for worst
cases for ulps error for these implementations (necessarily
non-exhaustively, given the size of the input space). I also expect a
custom implementation for a given format could be much faster as well
as more accurate, although the implementation is simpler than those
for pown and compoundn.
This completes adding to glibc those TS 18661-4 functions (ignoring
DFP) that are included in C23. See
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118592 regarding the C23
mathematical functions (not just the TS 18661-4 ones) missing built-in
functions in GCC, where such functions might usefully be added.
Tested for x86_64 and x86, and with build-many-glibcs.py.
Improve performance of __libc_calloc by splitting it into 2 parts: first handle
the tcache fastpath, then do the rest in a separate tailcalled function.
This results in significant performance gains since __libc_calloc doesn't need
to setup a frame.
On Neoverse V2, bench-calloc-simple improves by 5.0% overall.
Bench-calloc-thread 1 improves by 24%.
Reviewed-by: DJ Delorie <dj@redhat.com>
Due to raising the minimum binutils version to version >=2.28,
the used cfi_escape for cfi_val_offset can now be ommitted.
Checked with "objdump -WF" / "objdump -Wf" that the previous
cfi_escape and the new cfi_val_offset are equal.
Due to raising the minimum binutils version to >= 2.26, the configure
check for testing support of --update-section is not needed anymore.
Reviewed-by: Peter Bergner <bergner@tenstorrent.com>
The recent commit 27b96e069a raises the minimum
GCC version to 12.1 which was released in 2022.
The current minimum bintuils version 2.25 was released end of 2014. This patch
now raises the minimum binutils version to 2.39 which was also released in 2022.
The hint for ARC is not needed anymore.
In sysdeps/[alpha|hppa|csky]/configure.ac, PIE is unsupported with this comment:
PIE builds fail on binutils 2.37 and earlier, see:
https://sourceware.org/bugzilla/show_bug.cgi?id=28672
This patch keeps PIE unsupported and let the machine maintainers test and
enable it later.
In sysdeps/arm/configure.ac, there is a check whether TPOFF relocs with addends
are assembled correctly, which is known to be broken in binutils 2.24 and 2.25.
See: https://sourceware.org/bugzilla/show_bug.cgi?id=18383
This patch keeps the check as is and let the machine maintainers check if it
still required.
According to Florian Weimer:
Having at least binutils 2.38 will allow us to assume that this linker
bug is fixed:
Bug 28743 - -z relro creats holes in the process image on GNU/Linux
<https://sourceware.org/bugzilla/show_bug.cgi?id=28743>
Reviewed-by: Florian Weimer <fweimer@redhat.com>
Jonathan Wakely
Florian Weimer
Tomas Volf
Stefan Liebler
Wilco Dijkstra
Mark Wielaard
Carlos O'Donell
Andreas Schwab
Sunil K Pandey
Dylan Fleming
DJ Delorie
Yury Khrustalev
Cupertino Miranda
Joseph Myers
Paul Zimmermann